TECHNICAL FIELD
[0001] The present invention relates to a blow-out panel and an air conditioning indoor
unit including the blow-out panel.
BACKGROUND ART
[0002] Conventionally, there has been an air conditioning indoor unit that includes an indoor
unit body provided therein with an axial fan of which axis line vertically extends,
and a blow-out panel provided at a lower part of the indoor unit body and having a
blow-out port provided therein with a guide vane.
[0003] In the above air conditioning indoor unit, in order to increase a blow-out area of
the blow-out port, and in consideration of layout convenience, it is conceivable to
adopt the blow-out panel having a rectangular outer frame, a rectangular inner frame,
and a polygonal blow-out port surrounded by the outer frame and the inner frame.
[0004] However, in this case, the airflow generated from an axial fan is less likely to
be blown out to a corner of the blow-out port, and the air is likely to be blown out
of the blow-out port ununiformly.
[0005] In the above case, it is also necessary to consider how the guide vane is attached
to the blow-out panel with a simple configuration.
[0006] Further, conventionally, there has been an air treatment device connected to a polygonal
blow-out panel by a duct. A spiral airflow discharged from a fan component in the
air treatment device is sent to the blow-out panel via the duct. In that case, the
spiral airflow is less likely to be blown out to the corner of the blow-out port,
and the air is likely to be blown out of the blow-out port ununiformly.
SUMMARY OF THE INVENTION
[0007] In order to solve the above technical problems, a blow-out panel has an outer frame
and an inner frame. The outer frame and the inner frame surround a polygonal blow-out
port. A guide vane is provided in the blow-out port. The blow-out panel is provided
with a link. The link deviates from the corner of the blow-out port, and extends from
a central direction of the blow-out panel to the corner of the blow-out port. A rotating
shaft of the guide vane is pivotally connected to the link in parallel to a longitudinal
direction of the guide vane.
[0008] Here, "the outer frame and the inner frame surround a polygonal blow-out port" means
that a substantially polygonal shape combined with all parts capable of blowing out
air is formed between the outer frame and the inner frame. Further, the "corner of
the blow-out port" refers to a polygonal corner combined with all the parts capable
of blowing out air and formed between the outer frame and the inner frame.
[0009] With the blow-out panel having the above configuration, the polygonal blow-out port
surrounded by the outer frame and the inner frame is used. Thus, for example, when
an air conditioning indoor unit including an indoor unit body provided with an axial
fan is used, the air can be blown out close to all around 360°. The link to which
the guide vane is attached extends from the central direction of the blow-out panel
to the corner of the blow-out port. Thus, for example, when an air conditioning indoor
unit including an indoor unit body provided with an axial fan is used, the airflow
blown out from the axial fan or the like easily flows along the link to the corner
of the blow-out port, and the air is blown out of the blow-out port close to uniformly.
[0010] Further, the blow-out panel having the above configuration simplifies a connection
structure between the guide vane and the link. It is therefore possible to avoid interference
with the link of the guide vane during rotation, and it is easy to connect the guide
vane to the link.
[0011] On this blow-out panel, the link preferably connects the outer frame and the inner
frame.
[0012] The blow-out panel having the above configuration increases a strength of the entire
blow-out panel and eliminates the need for adding other connecting members. Further,
compared with the case where adding other connecting members, the interference of
other connecting members with the airflow at the blow-out port can be reduced, the
structure is simplified, and a size of the blow-out panel can be also increased.
[0013] On this blow-out panel, the link is preferably provided near an angle bisector of
the corner of the blow-out port.
[0014] With the blow-out panel having the above configuration, for example, when an air
conditioning indoor unit including an indoor unit body provided with an axial fan
is used, the airflow blown out from the axial fan or the like of the blow-out port
along the link easily flows to the corner, and the air is blown out of the blow-out
port close to uniformly.
[0015] On this blow-out panel, the guide vane preferably includes an elongated vane body,
and a fixing piece that is perpendicular to the vane body and to which a first end
of the rotating shaft is connected. The link has a projecting piece that projects
to intersect the longitudinal direction of the link, and a second end of the rotating
shaft is pivotally connected to the projecting piece.
[0016] The blow-out panel having the above configuration enables the guide vane and the
link to be pivotally connected with a simple structure.
[0017] On this blow-out panel, the link may include a link body and a connecting portion.
The connecting portion is disposed closer to the center of the blow-out panel than
the link body, and connects the link body and the inner frame. The projecting piece
is provided on the link body.
[0018] The blow-out panel having the above configuration increases a strength of the entire
blow-out panel and eliminates the need for adding other connecting members. Further,
compared with the case where adding other connecting members, the interference of
other connecting members with the airflow at the blow-out port can be reduced, the
structure is simplified, and a size of the blow-out panel can be also increased. The
simplified connection structure between the guide vane and the link can avoid the
interference with the link of the guide vane during rotation, and easily connect the
guide vane to the link.
[0019] On this blow-out panel, the projecting piece may include a first portion that extends
from the link body along a thickness direction of the blow-out panel, and a second
portion that extends at an angle with the first portion and is parallel to the fixing
piece. The second end of the rotating shaft is pivotally connected to the second portion.
[0020] With the blow-out panel having the above configuration, the first portion of the
projecting piece extends from the link body along the thickness direction of the blow-out
panel. Thus, for example, when an air conditioning indoor unit including an indoor
unit body provided with an axial fan is used, the first portion of the projecting
piece and the link can jointly guide the airflow generated from the axial fan or the
like to the corner of the blow-out panel. Further, since the second portion of the
projecting piece is parallel to the fixing piece, the rotating shaft has a simple
structure, furthermore, is easily assembled, and is assembled into a compact structure.
It is also possible to reduce wear of the rotating shaft during rotation.
[0021] On this blow-out panel, the projecting piece may be configured to be closer to the
corner of the blow-out port than the fixing piece.
[0022] On the blow-out panel having the above configuration, it is possible to reduce the
interference of the fixing piece and the first end of the rotating shaft with the
airflow at the corner of the blow-out port.
[0023] On this blow-out panel, the link preferably includes a first link and a second link
provided on one side of the blow-out port. As viewed from an inner surface side to
an outer surface side of the blow-out panel, the second link is disposed downstream
of the first link in a clockwise direction around the center of the blow-out panel.
The guide vane is provided with a first rotating shaft and a second rotating shaft
that are pivotally connected to the first link and the second link, respectively.
[0024] Here, the "outer surface of the blow-out panel" refers to the surface facing a user
when the blow-out panel is installed in a room or the like, and the "inner surface
of the blow-out panel" refers to the opposite surface of the "outer surface of the
blow-out panel".
[0025] The blow-out panel having the above configuration can increase a strength of the
entire blow-out panel and, robustness of the assembly of the guide vane can be improved,
and the guide vane can be further stabilized during reversal.
[0026] On this blow-out panel, an intermediate link may be further provided, and the guide
vane may be provided with an intermediate rotating shaft pivotally connected to the
intermediate link. The intermediate link is disposed in a middle of the blow-out port
and is perpendicular to the guide vane as viewed from the thickness direction of the
blow-out panel. A stepping motor that drives the rotation of the guide vane is attached
to the intermediate link.
[0027] The blow-out panel having the above configuration can make the force applied to the
guide vane close to uniform. This increases stability and simplifies a drive structure.
Further, the stepping motor, which is provided at a position of the outer frame of
the blow-out port, is also advantageous for miniaturization of the blow-out panel.
[0028] On the blow-out panel, the link preferably includes the link body and the connecting
portion. The connecting portion is disposed closer to the center of the blow-out panel
than the link body, and connects the link body and the inner frame. The connecting
portion and the link body each have a first surface and a second surface. The first
surface is disposed downstream of the second surface in the clockwise direction around
the center of the blow-out panel as viewed from the inner surface side to the outer
surface side of the blow-out panel. The second surface of the connecting portion forms
an inwardly concave shape together with the second surface of the link body.
[0029] The blow-out panel having the above configuration can ensure the strength of the
entire link and also reduce a volume of the link. For example, when an air conditioning
indoor unit including an indoor unit body provided with an axial fan is used, the
interference of the connecting portion of the link with the airflow generated by the
axial fan or the like can be reduced, and the air is blown out of the blow-out port
close to uniformly. Then, by using the second surface of the connecting portion of
the link, the airflow generated by the axial fan or the like is easily guided to the
corner of the blow-out port via the second surface of the link body. The airflow is
also blown out from the corner of the blow-out port, and the air can be blown out
all around 360° of the blow-out panel.
[0030] On this blow-out panel, the link preferably includes a first link and a second link
provided on one side of the blow-out port. As viewed from an inner surface side to
an outer surface side of the blow-out panel, the second link is disposed downstream
of the first link in a clockwise direction around the center of the blow-out panel.
The first link and the second link on both sides of one corner of the blow-out port
are formed such that the link body of the first link is parallel to the link body
of the second link.
[0031] With the blow-out panel having the above configuration, the entire structure of the
blow-out panel can be simplified, the interference of the link body of the link with
the airflow at the corner of the blow-out port can be reduced, and the air is blown
out of the blow-out port close to uniformly.
[0032] On this blow-out panel, a central member provided with an air guide piece is preferably
installed at a center of the inner frame.
[0033] With the blow-out panel having the above configuration, for example, when an air
conditioning indoor unit including an indoor unit body provided with an axial fan
is used, an air guide piece is used to guide an airflow generated by the axial fan
or the like. As a result, the airflow is prevented from being blown directly downward,
and the airflow guided by the air guide piece flows to the corner of the blow-out
port along the link. This allows the air to be blown out of the blow-out port close
to uniformly.
[0034] On this blow-out panel, the link may include the link body and the connecting portion.
The connecting portion is disposed closer to the center of the blow-out panel than
the link body, and connects the link body and the inner frame. The link body has the
first surface and the second surface. The first surface is disposed downstream of
the second surface in the clockwise direction around the center of the blow-out panel
as viewed from the inner surface side to the outer surface side of the blow-out panel.
A suction end of the air guide piece is disposed on an extension line of the first
surface of the link body.
[0035] With the blow-out panel having the above configuration, the airflow flowing to the
corner of the blow-out port can be further ensured, the air is blown out of the blow-out
port close to uniformly, and the air can be blown out all around 360° of the blow-out
panel.
[0036] Further, in order to solve the above technical problems, an air conditioning indoor
unit has an indoor unit body and the above blow-out panel. The blow-out panel is directly
connected to the indoor unit body or is connected to the indoor unit body via a duct.
BRIEF DESCRIPTION OF THE DRAWINGS
[0037]
FIG. 1 is a sectional side view schematically showing an overall structure of an air
conditioning indoor unit.
FIG. 2 is a plan view schematically showing a blow-out panel and a central member
of the air conditioning indoor unit.
FIG. 3 is a plan view schematically showing local structures of a blow-out panel and
a central member of the air conditioning indoor unit.
FIG. 4 is a plan view schematically showing a local structure of the blow-out panel
of the air conditioning indoor unit, and showing a structure near a first link.
FIG. 5 is a plan view schematically showing a local structure of the blow-out panel
of the air conditioning indoor unit, and showing a structure near a second link.
FIG. 6 is a perspective view schematically showing a local structure of the blow-out
panel of the air conditioning indoor unit, in which guide vanes are not shown.
FIG. 7 is a perspective view schematically showing a connection structure of the guide
vanes on the blow-out panel of the air conditioning indoor unit, where part of the
guide vanes is not shown (here, the guide vanes are in an open state).
FIG. 8 is a perspective view schematically showing a local structure of the blow-out
panel of the air conditioning indoor unit.
FIG. 9 is a perspective view schematically showing the connection structure of the
guide vanes in the blow-out panel of the air conditioning indoor unit, of which the
guide vanes are not shown.
FIG. 10 is a sectional side view schematically showing a local structure of the air
conditioning indoor unit.
DESCRIPTION OF EMBODIMENT
[0038] An embodiment will be described below with reference to FIGS. 1 to 10 by taking an
air conditioning indoor unit provided with an indoor unit body and a blow-out panel
as an example in accordance with an actual installation state.
[0039] Here, for convenience of description, three directions orthogonal to one another
are set to X direction, Y direction, and Z direction. Among them, the X direction
and the Y direction correspond to directions in a horizontal plane when the air conditioning
indoor unit is actually installed. The Z direction corresponds to a vertical direction
when the air conditioning indoor unit is actually installed. Y1 direction side, Y2
direction side, X1 direction side, X2 direction side, Z1 direction side, and Z2 direction
side respectively correspond to a front side, a rear side, a left side, a right side,
a lower side, and an upper side when the air conditioning indoor unit is actually
installed.
[0040] As shown in FIG. 1, the air conditioning indoor unit 1 includes an indoor unit body
10 in which an axial fan 30 is provided, and a blow-out panel 20 connected to the
indoor unit body 10 (in the illustrated example, the blow-out panel 20 is provided
at a lower part of the indoor unit body 10.)
[0041] Here, the indoor unit body 10 has a substantially rectangular parallelepiped shape
as a whole, and has an upper surface, a bottom surface, and four side surfaces. An
intake port JF is provided on each side face, and a filter component 40 is provided
at each intake port JP. As shown in FIG. 1, a heat exchanger 50 is further provided
inside the indoor unit body 10. The heat exchanger 50 is provided at an inner side
of the intake port JF and is surrounded by the filter component 40. The axial fan
30 is provided at an inner side of the heat exchanger 50. The axial fan 30 is provided
such that an axis line overlaps with a center axis line L of the blow-out panel 20
(that is, an axis line extending through a center of the blow-out panel 20 along a
thickness direction of the blow-out panel 20).
[0042] Further, as shown in FIGS. 1 and 2, the blow-out panel 20 has an outer frame 21 and
an inner frame 22. The outer frame 21 and the inner frame 22 surround a polygonal
blow-out port CF. Guide vanes 23 are provided in the blow-out port CF. The blow-out
panel 20 is provided with a link 24. The link 24 deviates from a corner of the blow-out
port CF (that is, the link 24 does not pass through an apex of the corner of the blow-out
port CF) and extends from the central direction of the blow-out panel 20 to the corner
of the blow-out port CF. The guide vanes 23 are rotatably attached to the link 24.
[0043] Here, as shown in FIGS. 1 and 2, as viewed from an inner surface side to an outer
surface side of the blow-out panel 20, specifically, as viewed from a side of the
blow-out panel 20 closer to the indoor unit body 10 (Z2 direction side) toward a side
away from the indoor unit body 10 (Z1 direction side), the link 24 has a first surface
(downstream in a clockwise direction in FIG. 2) and a second surface (upstream in
the clockwise direction in FIG. 2). An airflow generated by the axial fan or the like
flows through the second surface and the first surface in that order. That is, the
second surface is a windward surface and the first surface is a leeward surface.
[0044] Here, as shown in FIG. 2, the blow-out panel 20 has a substantially rectangular shape,
and has the rectangular outer frame 21 and the rectangular inner frame 22. The outer
frame 21 and the inner frame 22 surround the rectangular blow-out port CF. A set of
guide vanes 23 is provided on each side of the blow-out port CF (each side configures
an auxiliary blow-out port). As shown in FIGS. 2 and 3, each set of guide vanes 23
is a combination of three parallel guide vanes. Lengths of the three parallel guide
vanes is set to increase toward a direction from the inner frame 22 to the outer frame
21 of the blow-out panel 20. When the guide vanes 23 rotate to open the blow-out port
CF, the airflow at both ends of the guide vanes 23 gradually spreads downward along
the ends of the guide vanes 23, and is not blown out in parallel. Thus, the airflow
having a relatively low flow velocity at both ends of the guide vanes 23 is not adhered
to a ceiling. This prevents contaminants such as dust trapped in the airflow from
adhering to the ceiling. As a whole, most of the airflow is still guided by the guide
vanes 23, and a uniform distribution of the airflow can be still maintained.
[0045] Further, as shown in FIG. 2, the link 24 connects the outer frame 21 and the inner
frame 22, and is provided near an angle bisector of the corner of the blow-out port
CF (in the illustrated example, the link 24 is parallel to the angle bisector of the
corner of the blow-out port CF). The link 24 includes a first link 24A and a second
link 24B provided on one side of the blow-out port. As viewed along the Z direction
(specifically, as viewed from a viewpoint of FIG. 2), a vertical line CX passing through
the center of the blow-out panel 20 on one side of the blow-out port CF is disposed
downstream of the first link 24A in a clockwise direction around the center of the
blow-out panel. The second link 24B is disposed downstream of the vertical line CX
in the clockwise direction around the center of the blow-out panel. Thus, by using
the first link 24A and the second link 24B, respectively, the airflow generated by
the axial fan or the like can be guided to the two corners of the blow-out port CF,
and the airflows at the two corners of the blow-out port CF are both in a state close
to a uniform distribution.
[0046] Further, as shown in FIGS. 1 to 3, a central member 26 is provided at a lower part
of the axial fan 30 and at a lower part of the blow-out panel 20 (in the illustrated
example, the central member 26 projects toward the axial fan 30. However, the shape
is not limited to this, and may be appropriately changed as necessary). The central
member 26 is provided with an air guide piece 261. An end point of a suction end of
the air guide piece 261 is disposed on an extension line of a link body of the link
24.
[0047] Further, as shown in FIG. 2, the air guide piece 261 has an arc shape as viewed in
the Z direction. The air guide piece 261 has a first air guide piece 261A and a second
air guide piece 261B. As viewed along the Z direction (specifically, as viewed from
the viewpoint of FIG. 2), the first air guide piece 261A is disposed upstream of the
second air guide piece 261B in the clockwise direction around the center of the blow-out
panel.
[0048] Here, as shown in FIG. 2, one first link 24A and one second link 24B are provided
on one side of the blow-out port CF. Further, one first air guide piece 261A and one
second air guide piece 261B are provided.
[0049] As shown in FIGS. 2 and 4, the first link 24A includes a link body 241A on which
each guide vane 23 is rotatably arranged, and a connecting portion 242A. The connecting
portion 242A is disposed closer to the central direction of the blow-out panel 20
than the link body 241A, and connects the link body 241A and the inner frame 22. Further,
as viewed along the Z direction, a second surface 2421A of the connecting portion
242A forms an inwardly concave shape together with a second surface 2411A of the link
body 241A. Here, as shown in FIGS. 6 and 8, the connecting portion 242A connects a
first portion 2423A that extends substantially along a direction in which the link
body 241A extends and a second portion 2424A that connects the first portion 2423A
to the inner frame 22. The first portion and the second portion both have a guide
surface that has an effect of guiding. Specifically, end surfaces of the first portion
2423A and the second portion 2424A close to the central direction of the blow-out
panel are both arc-shaped guide surfaces. Further, the end surface of the second portion
2424A away from the central direction of the blow-out panel is a chamfered surface
extending toward the corners of the blow-out port CF (that is, as the end surface
goes closer to the corners of the blow-out port CF, the windward surface and the leeward
surface come closer.) The chamfered surface guides the airflow generated by the axial
fan or the like to the corners of the blow-out port CF.
[0050] As shown in FIGS. 2 and 5, the second link 24B includes a link body 241B on which
each guide vane 23 is rotatably arranged, and a connecting portion 242B. The connecting
portion 242B is disposed closer to the central direction of the blow-out panel 20
than the link body 241B, and connects the link body 241B and the inner frame 22. Further,
as viewed along the Z direction, a second surface 2421B of the connecting portion
242B forms an inwardly concave shape together with a second surface 2411B of the link
body 241B. Similarly, as shown in FIG. 8, the connecting portion 242B connects a first
portion 2423B that extends substantially along a direction in which the link body
241B extends and a second portion 2424B that connects the first portion 2423B to the
inner frame 22. The first portion and the second portion both have a guide surface
that has an effect of guiding. Specifically, end surfaces of the first portion 2423B
and the second portion 2424B close to the central direction of the blow-out panel
are both arc-shaped guide surfaces. The end surface of the second portion 2424B away
from the central direction of the blow-out panel is a chamfered surface extending
toward the corners of the blow-out port CF. The chamfered surface guides the airflow
generated by the axial fan or the like to the corners of the blow-out port CF.
[0051] Here, as shown in FIG. 4, on the first link 24A, the windward surface as the second
surface 2411A of the link body 241A and the leeward surface as a first surface 2412A
are substantially flat surfaces. The second surface 2421A and a first surface 2422A
of the connecting portion 242A are substantially flat surfaces. The second surface
2411A of the link body 241A intersects with the second surface 2421A of the connecting
portion 242A. The first surface 2412A of the link body 241A is substantially flush
with the first surface 2422A of the connecting portion 242A or forms an obtuse angle
larger than an angle formed by the second surfaces. Thus, the airflow guided from
the air guide piece can be guided to the link body 2412A along the first surface 2422A
of the connecting portion 242A and further to the corners of the blow-out port CF.
Similarly, as shown in FIG. 5, on the second link 24B, the windward surface as the
second surface 2411B and the leeward surface as a first surface 2412B of the link
body 241B are substantially flat surfaces. The second surface 2421B and a first surface
2422B of the connecting portion 242B are substantially flat surfaces. The second surface
2411B of the link body 241B intersects with the second surface 2421B of the connecting
portion 242B. The first surface 2412B of the link body 241B is substantially flush
with the first surface 2422B of the connecting portion 242B or forms an obtuse angle
larger than an angle formed by the windward surfaces. Thus, the airflow guided from
the air guide piece can be guided to the link body 2412B along the first surface 2422B
of the connecting portion 242B and further to the corners of the blow-out port CF.
[0052] Furthermore, as shown in FIGS. 4 and 5, on the first link 24A, the second surface
2421A of the connecting portion 242A forms an obtuse angle with the second surface
2411A of the link body 241A. Further, on the second link 24B, the second surface 2421B
of the connecting portion 242B forms an obtuse angle with the second surface 2411B
of the link body 241B. Thus, when the airflow generated by the axial fan or the like
flows to the link bodies 241A and 241B along the connecting portions 242A and 242B,
a direction of the airflow changes gently. As a result, a turbulent flow is less likely
to be formed at connections between the second surfaces 2421A and 2421B of the connecting
portions 242A and 242B and the second surfaces 2411A and 2411B of the link bodies
241A and 241B.
[0053] Further, as shown in FIGS. 6 to 9, on the first link 24A, a rotating shaft 29 of
each guide vane 23 is pivotally connected to the link body 241A in a substantially
horizontal state. Specifically, each guide vane 23 includes an elongated vane body
231 and a fixing piece 232. The fixing piece 232 is perpendicular to the vane body
231, and is connected to a first end of the rotating shaft 29. The first link 24A
has a projecting piece 243 that intersects with a longitudinal direction of the first
link 24A and projects. The projecting piece 243 configures a support that supports
the rotating shaft 29. A second end of the rotating shaft 29 is pivotally connected
to the projecting piece 243. In the illustrated example, the projecting piece 243
is provided on the link body 241A, and is closer to the corners of the blow-out port
CF than the fixing piece 232. A boundary between the connecting portion 242A and the
link body 241A is disposed between the inner frame 22 and the rotating shaft 29, and
thus the guide vanes 23 are stably rotated. The projecting piece 243 includes a first
portion 2431 extending from the link body 241A along the thickness direction of the
blow-out panel 20 and a second portion 2432. The second portion 2432 extends at an
angle with respect to the first portion 2431 and is parallel to the fixing piece 232.
The second end of the rotating shaft 29 is pivotally connected to the second portion
2432.
[0054] Similarly, as shown in FIGS. 6 to 9, on the second link 24B, the rotating shaft of
each guide vane 23 is pivotally connected to the link body 241B in a substantially
horizontal state. Specifically, each guide vane 23 includes the vane body 231 having
an elongated shape and the fixing piece 232. The fixing piece 232 is perpendicular
to the vane body 231, and is connected to the first end of the rotating shaft 29.
The second link 24B has the projecting piece 243 that projects to intersect with the
longitudinal direction of the second link 24B. The projecting piece 243 configures
a support that supports the rotating shaft 29. A second end of the rotating shaft
29 is pivotally connected to the projecting piece 243. In the illustrated example,
the projecting piece 243 is provided on the link body 241B, and is closer to the corners
of the blow-out port CF than the fixing piece 232. A boundary between the connecting
portion 242B and the link body 241B is disposed between the inner frame 22 and the
rotating shaft 29, and thus the guide vanes 23 are stably rotated. The projecting
piece 243 includes the first portion 2431 extending from the link body 241B along
the thickness direction of the blow-out panel 20 and the second portion 2432. The
second portion 2432 extends at an angle with respect to the first portion 2431 and
is parallel to the fixing piece 232. The second end of the rotating shaft 29 is pivotally
connected to the second portion 2432.
[0055] Furthermore, as shown in FIGS. 7 and 9, a buffer ring 291 is integrally formed on
the rotating shaft 29. The buffer ring 291 is disposed between the fixing piece 232
and the projecting piece 243 with each guide vane 23 attached. The buffer ring 291
prevents a jammed pivotal rotation of the guide vanes or accelerated wear of the fixing
piece due to friction between the fixing piece 232 and the projecting piece 243. Here,
the second end of the rotating shaft 29, which has a hollow structure and is divided
into four pieces, can form a space for elastic deformation, and makes it convenient
for the guide vanes 23 to be attached and detached. The first end of the rotating
shaft 29 may be integrally molded with the fixing piece 232 or may be fixed and bonded
to the fixing piece 232.
[0056] Further, as shown in FIGS. 2, 6 and 7, each projecting piece 243 provided on the
first link 24A and the second link 24B is pivotally connected via the rotating shaft
29 to each end of the same guide vane 23 in the longitudinal direction. The guide
vanes 23 thus rotate stably. The projecting pieces 243 provided on the first link
24A and the second link 24B are provided at positions closer to the corners of the
blow-out port CF than the fixing pieces 232 provided on both ends of the guide vanes.
That is, the fixing pieces 232 at both ends of the guide vanes 23 are provided on
different sides of the first link 24A and the second link 24B, respectively. Thus,
as compared with the case where the fixing pieces 232 are provided on the same side
of the first link 24A and the second link 24B, the rotating shaft 29 is prevented
from falling off the projecting piece 243.
[0057] Further, as shown in FIG. 2, the first link 24A and the second link 24B on both sides
of one corner of the blow-out port CF are formed such that the link body of the first
link 24A is parallel to the link body of the second link 24B.
[0058] Further, as shown in FIG. 2 and FIG. 3, the suction end of the air guide piece 261
is disposed on the extension line of the first surface of the link body of the link
24, and the blow-out end of the air guide piece 261 is closer to the vertical line
CX than the link 24. Specifically, a suction end 261AA of the first air guide piece
261A is disposed on an extension line YC1 of the first surface 2412A of the link body
241A of the first link 24A. A suction end 261AB of the second air guide piece 261B
is disposed on an extension line YC2 of the first surface 2412B of the link body 241B
of the second link 24B. A blow-out end 261BA of the first air guide piece 261A is
closer to the vertical line CX than the first link 24A. A blow-out end 261BB of the
second air guide piece 261B is closer to the vertical line CX than the second link
24B. Then, a point X farthest from the vertical line CX on the leeward surface of
the second air guide piece 261B is disposed on an extension line YC3 of the second
surface 2421B of the connecting portion 242B of the second link 24B. Thus, the airflow
guided from the leeward surface of the suction end of the second air guide piece 261B
flows to the corners of the blow-out panel CF along the first surface of the second
link 241B. Further, the airflow guided from the leeward surface of the blow-out end
of the second air guide piece 261B flows to the second surface 2421B of the connecting
portion 242B of the second link 241B.
[0059] Here, as shown in FIGS. 2 and 3, the blow-out panel 20 is further provided with an
intermediate link 25. The intermediate link 25 connects the outer frame 21 and the
inner frame 22. As viewed along the Z direction, the intermediate link 25 is disposed
at a middle of the blow-out port CF and is perpendicular to the guide vanes 23. A
stepping motor (not shown) that drives the rotation of the guide vanes 23 is attached
to the intermediate link 25. The first link 24A and the second link 24B are provided
substantially symmetrically with respect to the intermediate link 25.
[0060] Here, as shown in FIG. 10, during an operation of the air conditioning indoor unit
1, the guide vanes 23 are reversed to a predetermined angle with respect to the outer
surface of the blow-out panel 20. There is a gap between (an uppermost edge of) the
guide vanes 23 and (the link body of) the link 24 for the airflow generated by the
axial fan or the like to flow in the thickness direction of the blow-out panel. A
gap of about 5 mm is preferably ensured between (the uppermost edge of) the guide
vanes 23 and (the link body of) the link 24 even when the guide vanes 23 are reversed
to a maximum angle (for example, 75° or 90°) with respect to the outer surface of
the blow-out panel 20. This gap may be longer than 5 mm, provided that the gap does
not affect a miniaturization of the blow-out panel in order to expand a path through
which the airflow flows. Then, in order to ensure that the guide vanes 23 do not interfere
with the link when the guide vanes 23 are reversed, the gap may be shorter than 5
mm.
[0061] Further, as shown in FIG. 10, the air guide piece 261 at least partially overlaps
with the link 24 as viewed in a horizontal direction. Here, in the Z direction, the
link 24 is disposed in the center of the air guide piece 261. The airflow generated
by the axial fan or the like flows to the connecting portion of the link 24 via the
windward surface of the air guide piece 261, and is guided to the corners of the blow-out
port CF along the link body.
[0062] Then, as shown in FIG. 10, at least part of the central member 26 projects from the
blow-out panel 20 in the Z direction. The air guide piece 261 can be thus easily provided
on the central member 26. Further, the central member 26, which has the arc-shaped
air guide surface, allows the airflow generated by the axial fan or the like to be
guided to the blow-out port CF.
[0063] Further, as shown in FIGS. 1 and 10, the air conditioning indoor unit 1 further includes
a side frame member 28 surrounding the axial fan 30. The central member 26 has a support
rod 262, and is connected to the side frame member 28 via the support rod 262. Then,
as shown in FIGS. 2 and 3, the support rod 262 is disposed between the air guide piece
261 and the link 24 as viewed along the Z direction. As shown in FIG. 10, as viewed
along the horizontal direction, at least a part of the air guide piece 261 is arranged
to be shifted from the support rod 262 (in the illustrated example, the support rod
262 extends upward from a position of the air guide piece 261 to the outside in a
radial direction). One side of the support rod 262 facing the axial fan 30 is an arc-shaped
surface, and thus the airflow can be guided while the interference with the airflow
generated by the axial fan or the like is reduced.
[0064] Further, as shown in FIG. 2, the blow-out panel 20 is further provided with a weather
strip 27. The weather strip 27 is provided at each corner of the blow-out port CF,
and connects the outer frame 21 and the inner frame 22. The weather strip is used
to separate the airflows guided by the guide vanes adjacent in a peripheral direction,
and thus the airflows guided by the guide vanes adjacent in the peripheral direction
from interfering with each other at the blow-out port. Further, the airflow at the
blow-out port can be improved.
[0065] In this embodiment, during the operation of the axial fan 30 of the air conditioning
indoor unit 1, the airflow is sucked into the indoor unit body 10 from the suction
port JP by an action of the axial fan 30, flows through the filter component 40 and
the heat exchanger 50 in that order, and flows to a center of the air conditioning
indoor unit 1. Then, the airflow flows through the axial fan 30 to form a spiral airflow,
and flows down below to the central member 26. After that, the airflow is guided by
the arc-shaped air guide surface of the central member 26, spreads from the center
of the blow-out panel 20 all around to the blow-out port CF. A part of the airflow
is guided to the corners of the blow-out port CF by the air guide piece 261 provided
on the central member 26. This airflow flows from below the support rod 262 and is
guided to the corners of the blow-out port CF via the link 24. Finally, the airflow
flows through the blow-out port CF. The guide vanes 23 provided at the blow-out port
CF are driven by the motor to be reversed to a predetermined angle and guide the airflow
to the outside of the air conditioning indoor unit 1.
[0066] In the air conditioning indoor unit 1 according to this embodiment, on the blow-out
panel 20, the polygonal blow-out port CF is surrounded by the outer frame 21 and the
inner frame 22. This enables the air to be blown out all around 360°. The link 24
to which the guide vanes 23 are attached extends from the central direction of the
blow-out panel 20 to the corners of the blow-out port CF, the airflow blown out from
the axial fan 30 easily flows along the link 24 to the corners of the blow-out port
CF. This allows the air to be blown out of the blow-out port CF close to uniformly.
[0067] Further, the rotating shaft 29 of each guide vane 23 is pivotally connected to the
link 24, and thus a connection structure between the guide vanes 23 and the link 24
is simple. This avoids the interference of the guide vanes with the link when the
guide vanes are rotated. This facilitates connection of the guide vanes to the link.
[0068] Further, in the air conditioning indoor unit 1 according to this embodiment, the
link 24 connects the outer frame 21 and the inner frame 22, and thus a strength of
the blow-out panel 20 as a whole is increased.
[0069] Further, in the air conditioning indoor unit 1 according to this embodiment, the
link 24 is provided near the angle bisector of each corner of the blow-out port CF.
Specifically, the link 24 is provided to be parallel to the angle bisector of each
corner of the blow-out port CF. This allows the airflow blown out from the axial fan
30 to further easily flow along the link 24 to the corners of the blow-out port CF,
and allows the air to be blown out of the blow-out port CF close to uniformly.
[0070] Further, in the air conditioning indoor unit 1 according to this embodiment, one
end of the connecting portion of the link 24 away from the link body is arc-shaped
as viewed along the Z direction. Thus, it is possible to reduce the interference of
the one end of the connecting portion of the link 24 away from the link body with
the airflow generated by the axial fan 30. The end, which is arc-shaped, can guide
the airflow generated by the axial fan or the like to the corners of the blow-out
port CF. This allows the air to be blown out of the blow-out port CF close to uniformly.
[0071] Further, in the air conditioning indoor unit 1 according to this embodiment, a width
of the connecting portion of the link 24 gradually narrows toward one side of the
link body as viewed along the Z direction. Thus, the strength of the entire link 24
is ensured, and a volume of the link 24 can be also reduced. This helps reduce the
interference of the connecting portion of the link 24 with the airflow generated by
the axial fan 24, and allows the air to be blown out of the blow-out port CF uniformly.
[0072] Further, in the air conditioning indoor unit 1 according to this embodiment, as viewed
along the Z direction, the second surface of the connecting portion of the link 24
forms an inwardly concave shape together with the second surface of the link body.
Thus, by using the second surface of the connecting portion of the link 24, the airflow
generated by the axial fan 30 is easily guided to the corners of the blow-out port
CF via the second surface of the link body. This also allows the airflow to be blown
out from the corners of the blow-out port, and further allows the air to be blown
out close to around 360° of the blow-out panel.
[0073] Further, in the air conditioning indoor unit 1 according to this embodiment, the
second surface of the connecting portion of the link 24 and the second surface of
the link body form an obtuse angle. It is therefore possible to ensure an effect that
the airflow generated by the axial fan 30 is guided by using the second surface of
the connecting portion of the link 24. Further, it is possible to reduce the interference
of the connecting portion of the link 24 and the link body with the airflow generated
by the axial fan 30. This allows the air to be blown out of the blow-out port CF close
to uniformly.
[0074] Further, in the air conditioning indoor unit 1 according to this embodiment, the
first link 24A and the second link 24B on both sides of one corner of the blow-out
port CF are formed such that the link body 241A of the first link 24A is parallel
to the link body 241B of the second link 24B. This can simplify an entire structure
of the blow-out panel 20, and reduce the interference of the link body of the link
24 with the airflow at the corners of the blow-out port CF. This allows the air to
be blown out of the blow-out port CF close to uniformly.
[0075] Further, in the air conditioning indoor unit 1 according to this embodiment, the
stepping motor that drives the rotation of the guide vanes 23 is attached to the intermediate
link 25. Thus, a force applied to the guide vanes 23 becomes close to uniform, and
a drive structure can be simplified. Further, the stepping motor, which is provided
on the outer frame of the blow-out port, is also advantageous for miniaturization
of the blow-out panel.
[0076] In the air conditioning indoor unit 1 according to this embodiment, the central member
26 is provided at a center of the inner frame 22. The central member 26 is provided
with the air guide piece 261. As a result, the airflow generated by the axial fan
30 is guided by using the air guide piece 261, and the airflow is thus prevented from
being directly blown downward. This allows the air to be blown out of the blow-out
port CF close to uniformly.
[0077] Further, in the air conditioning indoor unit 1 according to this embodiment, the
suction end of the air guide piece 261 is disposed on the extension line of the first
surface of the link body of the link 24. This can further ensure the airflow flowing
to the corners of the blow-out port CF, and allows the air to be blown out of the
blow-out port CF close to uniformly, and allows the air to be blown out around 360°
of the blow-out panel.
[0078] Further, in the air conditioning indoor unit 1 according to this embodiment, the
link 24 is disposed at the center of the air guide piece 261 in the Z direction. This
strengthens an interaction between the air guide piece 261 and the link 24, ensures
the airflow flowing to the corners of the blow-out port CF, and allows the air to
be blown out of the blow-out port CF close to uniformly.
[0079] Although the blow-out panel and the air conditioning indoor unit have been described
above as an example with reference to the drawings, the specific implementation of
the blow-out panel and the air conditioning indoor unit is not limited by the above
embodiment.
[0080] For example, in the above embodiment, the air conditioning indoor unit including
the indoor unit body and the blow-out panel provided at the lower part of the indoor
unit body has been described as an example. However, the present invention is not
limited thereto. The present invention may have a configuration where the blow-out
panel is connected to an air treatment device via a duct, and the spiral airflow discharged
from a fan component in the air treatment device is sent to the blow-out panel via
the duct and further discharged from the blow-out panel. The blow-out panel and the
air conditioning indoor unit may be configured as such.
[0081] Further, in the above embodiment, the indoor unit body 10 has a substantially rectangular
parallelepiped shape as a whole, but the shape of the indoor unit body may be appropriately
changed depending on the situation. For example, the indoor unit body may be formed
in a substantially columnar shape, a prismatic shape other than a square prism, or
the like. Similarly, the blow-out panel 20 is substantially rectangular as viewed
from the Z direction in the above embodiment, but the shape of the blow-out panel
may be appropriately changed depending on the situation. For example, the blow-out
panel may have a substantially circular shape as viewed from the Z direction, or may
have a shape such as a polygon other than a quadrangle as viewed from the Z direction.
[0082] Further, the blow-out port CF is rectangular in the above embodiment, but the present
invention is not limited to this, and the blow-out port may be formed in a polygonal
shape.
[0083] Further, the suction port JF is provided on each side surface of the indoor unit
body 10, and the filter component 40 is provided at each suction port JF in the above
embodiment. The number of suction ports and the number of filter components may be
adjusted as necessary.
[0084] Further, in the above embodiment, on one side of the blow-out port CF, one first
link 24A and one second link 24B are provided, and one first air guide piece 261A
and one second air guide piece 261B are provided. However, in this case as well, the
number of the first link 24A, the second link 24B, the first air guide piece 261A,
and the second air guide piece 261B provided on one side of the blow-out port CF may
be changed as necessary.
[0085] Further, in the above embodiment, the link 24 connects the outer frame 21 and the
inner frame 22. However, without being limited to such a configuration, the link 24
may be connected to only one of the outer frame 21 or the inner frame 22.
[0086] In the above embodiment, the link 24 includes the first link 24A and the second link
24B. However, the present invention is not limited thereto, and the link 24 may include
only one of the first link 24A or the second link 24B. Similarly, the air guide piece
261 includes the first air guide piece 261A and the second air guide piece 261B in
the above embodiment, but the present invention is not limited thereto. The air guide
piece 261 may include only one of the first air guide piece 261A or the second air
guide piece 261B.
[0087] Further, in the above embodiment, on the first link 24A, the second surface 2411A
and the first surface 2412A of the link body 241A are substantially flat surfaces,
and the second surface 2421A and the first surface 2422A of the connecting portion
242A are substantially flat surfaces. On the second link 24B, the second surface 2411B
and the first surface 2412B of the link body 241B are substantially flat surfaces,
and the second surface 2421B and the first surface 2422B of the connecting portion
242B are substantially flat surfaces. However, the present invention is not limited
thereto, and the second surface 2411A and the first surface 2412A of the link body
241A, and the second surface 2421A and the first surface 2422A of the connecting portion
242A may be formed in other shapes. (For example, the surfaces may be formed in an
arc shape or a polygonal line shape as viewed from the Z direction.) Further, the
second surface 2411B and the first surface 2412B of the link body 241B, and the second
surface 2421B and the first surface 2422B of the connecting portion 242B may be formed
in other shapes (for example, the surfaces may be formed in an arc shape or a polygonal
line shape as viewed from the Z direction).
[0088] Further, in the above embodiment, the first link 24A and the second link 24B on both
sides of one corner of the blow-out port CF are formed such that the link body of
the first link 24A is parallel to the link body of the second link 24B. However, the
present invention is not limited thereto, and the link body of the first link 24A
and the link body of the second link 24B may be formed to be unparallel to each other.
[0089] Further, in the above embodiment, the air guide piece 261 has an arc shape as viewed
from the Z direction. However, the shape of the air guide piece is not limited thereto,
and may be appropriately changed as necessary.
[0090] Further, in the above embodiment, the suction end of the air guide piece 261 is disposed
on the extension line of the first surface of the link body of the link 24. However,
the present invention is not limited thereto, and the suction end of the air guide
piece may be disposed substantially in the direction in which the link body of the
link extends.
[0091] Further, in the above embodiment, the specific form of the rotating shaft 29 may
be appropriately changed as necessary. For example, the rotating shaft 29 may be a
simple rod-shaped or tubular member or a joint.
REFERENCE SIGNS LIST
[0092]
- 1
- Air conditioning indoor unit
- 10
- Indoor unit body
- 20
- Blow-out panel
- 21
- Outer frame
- 22
- Inner frame
- 23
- Guide vane
- 231
- Vane body
- 232
- Fixing piece
- 24
- Link
- 24A
- First link
- 24B
- Second link
- 241A
- Link body
- 241B
- Link body
- 2411A
- Second surface
- 2411B
- Second surface
- 2412A
- First surface
- 2412B
- First surface
- 242A
- Connecting portion
- 242B
- Connecting portion
- 2421A
- Second surface
- 2421B
- Second surface
- 2422A
- First surface
- 2422B
- First surface
- 2423A
- First portion of connecting portion
- 2423B
- First portion of connecting portion
- 2424A
- Second portion of connecting portion
- 2424B
- Second portion of connecting portion
- XMA
- Chamfered surface
- XMB
- Chamfered surface
- 243
- Projecting piece
- 2431
- First portion of projecting piece
- 2432
- Second portion of projecting piece
- 25
- Intermediate link
- 26
- Central member
- 261
- Air guide piece
- 261A
- First air guide piece
- 261B
- Second air guide piece
- 262
- Support rod
- 27
- Side frame member
- 29
- Rotating shaft
- 291
- Buffer ring
- 30
- Axial fan
- 40
- Filter component
- 50
- Heat exchanger
- L
- Center axis line
- CX
- Vertical line
- YC1
- Extension line
- YC2
- Extension line
- YC3
- Extension line
1. A blow-out panel (20) comprising:
an outer frame (21);
an inner frame (22);
a guide vane (23); and
a link (24), wherein
the outer frame (21) and the inner frame (22) surround a blow-out port (CF) having
a polygonal shape,
the guide vane (23) is provided in the blow-out port (CF),
the link (24) deviates from a corner of the blow-out port (CF) and extends from a
central direction of the blow-out panel (20) to the corner of the blow-out port (CF),
and
a rotating shaft (29) of the guide vane (23) is pivotally connected to the link (24)
in parallel to a longitudinal direction of the guide vane.
2. The blow-out panel according to claim 1, wherein the link (24) connects the outer
frame (21) and the inner frame (22).
3. The blow-out panel according to claim 1 or 2, wherein the link (24) is provided near
an angle bisector of the corner of the blow-out port (CF).
4. The blow-out panel according to any one of claims 1 to 3, wherein
the guide vane (23) has a vane body (231) having an elongated shape, and a fixing
piece (232) that is perpendicular to the vane body and to which a first end of the
rotating shaft (29) is connected,
the link (24) has a projecting piece (243) that intersects with a longitudinal direction
of the link and projects, and
a second end of the rotating shaft (29) is pivotally connected to the projecting piece.
5. The blow-out panel according to claim 4, wherein
the link (24) includes a link body (241A, 241B) and a connecting portion (242A, 242B),
wherein
the connecting portion (242A, 242B) is disposed closer to a center of the blow-out
panel (20) than the link body (241A, 241B), and connects the link body (241A, 241B)
and the inner frame (22), and
the projecting piece is provided on the link body (241A, 241B).
6. The blow-out panel according to claim 5, wherein
the projecting piece (243) has a first portion (2431) that extends along a thickness
direction of the blow-out panel from the link body (241A, 241B), and a second portion
(2432) that extends at an angle with the first portion and is parallel to the fixing
piece (232), and
a second end of the rotating shaft (29) is pivotally connected to the second portion.
7. The blow-out panel according to any one of claims 4 to 6, wherein the projecting piece
(243) is closer to a corner of the blow-out port (CF) than the fixing piece (232).
8. The blow-out panel according to any one of claims 1 to 7, wherein
the link (24) has a first link (24A) and a second link (24B) provided on one side
of the blow-out port (CF),
the second link (24B) is disposed downstream of the first link (24A) in a clockwise
direction around the center of the blow-out panel as viewed from an inner surface
side to an outer surface side of the blow-out panel, and
the guide vane (23) is provided with a first rotating shaft (29A) and a second rotating
shaft (29B) that are pivotally connected to the first link (24A) and the second link
(24B), respectively.
9. The blow-out panel according to claim 8, further comprising an intermediate link (25),
wherein
the guide vane (23) is provided with an intermediate rotating shaft pivotally connected
to the intermediate link (25),
as viewed from a thickness direction of the blow-out panel (20), the intermediate
link (25) is disposed in a middle of the blow-out port (CF), and is perpendicular
to the guide vane (23), and
a stepping motor that drives a rotation of the guide vane (23) is attached to the
intermediate link (25).
10. The blow-out panel according to any one of claims 1 to 7, wherein
the link (24) has a link body (241A, 241B) and a connecting portion (242A, 242B),
the connecting portion (242A, 242B) is disposed closer to the center of the blow-out
panel (20) than the link body (241A, 241B), and connects the link body (241A, 241B)
and the inner frame (22),
the connecting portion (242A, 242B) and the link body (241A, 241B) each have a first
surface and a second surface,
as viewed from the inner surface side to the outer surface side of the blow-out panel,
the first surface is disposed downstream of the second surface in the clockwise direction
around the center of the blow-out panel, and
the second surface (2421A, 2421B) of the connecting portion (242A, 242B) forms an
inwardly concave shape together with the second surface (2411A, 2411B) of the link
body (241A, 241B).
11. The blow-out panel according to any one of claims 1 to 7, wherein
the link (24) has a first link (24A) and a second link (24B) that are provided on
one side of the blow-out port (CF),
the second link (24B) is disposed downstream of the first link (24A) in a clockwise
direction around a center of the blow-out panel as viewed from an inner surface side
to an outer surface side of the blow-out panel, and
the first link (24A) and the second link (24B) on both sides of one corner of the
blow-out port (CF) are formed such that the link body (241A) of the first link (24A)
is in parallel to the link body (241B) of the second link (24B).
12. The blow-out panel according to any one of claims 1 to 11, wherein a central member
(26) provided with an air guide piece (261) is installed at a center of the inner
frame (22).
13. The blow-out panel according to claim 12, wherein
the link (24) has a link body (241A, 241B) and a connecting portion (242A, 242B),
the connecting portion (242A, 242B) is disposed closer to a center of the blow-out
panel (20) than the link body (241A, 241B), and connects the link body (241A, 241B)
and the inner frame (22),
the link body (241A, 241B) has a first surface and a second surface,
the first surface is disposed downstream of the second surface around the center of
the blow-out panel in a clockwise direction as viewed from an inner surface side to
an outer surface side of the blow-out panel (20), and
a suction end (261A) of the air guide piece (261) is disposed on an extension line
of the first surface (2412A, 2412B) of the link body (241A, 241B).
14. An air conditioning indoor unit comprising:
an indoor unit body (10); and
the blow-out panel (20) described in any one of claims 1 to 13, wherein
the blow-out panel (20) is directly connected to the indoor unit body (10), or connected
to the indoor unit body (10) via a duct.