Field
[0001] The present invention relates to a humidifying element and a humidifying apparatus.
Background
[0002] As an apparatus that generates the air of a humidifying atmosphere, there are a natural
evaporation type, an electric heating type, a water spray type, an ultrasound type,
and the like. In the natural evaporation type apparatus, a humidifying ability tends
to be small compared with the other types. In the electric heating type apparatus,
running cost tends to be high compared with the other types. In the water spray type
apparatus, humidifying efficiency tends to be low and the apparatus tends to be large
compared with the other types. In the ultrasound type apparatus, initial cost tends
to be high compared with the other types. In addition, the life of the apparatus tends
to be short and germs in water and fine powder of calcium carbonate tend to scatter.
[0003] Under such circumstances, in a natural evaporation type humidifier, running cost
is easily reduced compared with the other types. Therefore, the natural evaporation
type humidifier is useful for use, in particular, in a place where the natural evaporation
type humidifier is operated for a long time. The humidifying ability described as
the problem above is being improved.
[0004] There are various forms of the natural evaporation type humidifier. Among the forms,
there is a "dripping type" as a humidifying system suitable for use for a long time.
The humidifier of the dripping type tends to be used in humidifying apparatuses for
business use such as an air conditioner.
[0005] As the humidifying apparatus of the dripping type, for example, Patent Literature
1 discloses a method of dropping water from an upper part of a humidifying element
through a porous member and a configuration in which the bottom surface of a water
tank is formed of the porous member.
[0006] Patent Literature 2 discloses an upper tray including a large number of water injection
holes on the bottom surface of a water tank and a configuration in which a sponge-like
porous material is provided between the upper tray and a humidifying filter to wash
the humidifying filter.
Citation List
Patent Literature
[0007]
Patent Literature 1: Japanese Patent Publication No. S60-8637
Patent Literature 2: Japanese Patent Application Laid-Open No. 2009-180434
Summary
Technical Problem
[0008] However, in the configuration disclosed in Patent Literature 1, because the bottom
surface is formed of the porous member, hard components included in tap water and
vaporization residues such as silica and iron rust deposit on the entire bottom surface.
The porous member is clogged according to the elapse of time and a water passage amount
decreases. Therefore, there is a problem in that a humidifying ability is deteriorated.
[0009] In the configuration disclosed in Patent Literature 2, because the water injection
holes are in contact with the sponge-like porous material, gas dissolved in water
in the water tank adheres to the sponge-like porous material as air bubbles. Hard
components included in tap water and vaporization residues such as silica and iron
rust adhere to and deposit on the water injection holes and the water injection holes
are clogged, whereby a water passage amount of the sponge-like porous material decreases.
Therefore, there is a problem in that a humidifying ability is deteriorated.
[0010] The present invention has been devised in view of the above and an object of the
present invention is to obtain a humidifying element that can achieve uniform supply
of water to a plurality of humidifying bodies and stable water supply for a long period.
Solution to Problem
[0011] In order to solve the above problem, and in order to attain the above object, a humidifying
element of the present invention includes a plurality of humidifying bodies arranged
along a first direction to provide gaps among the humidifying bodies, a diffusing
member that extends along the first direction and is in contact with the plurality
of humidifying bodies, and a casing that houses the plurality of humidifying bodies
and the diffusing member on an inside. A water storing section provided above the
humidifying bodies to store water is formed in the casing, a plurality of water injection
holes are formed on a bottom surface of the water storing section, a cylindrical wall
surface extending downward from the water injection hole portion is formed on an outer
side of the bottom surface of the water storing section, a distal end of the cylindrical
wall surface and the diffusing member are set in contact, and a communication port
for causing an inside and an outside of the cylindrical wall surface to communicate
is formed in the cylindrical wall surface.
Advantageous Effects of Invention
[0012] According to the present invention, there is an effect that it is possible to obtain
a humidifying element that can achieve uniform supply of water to a plurality of humidifying
bodies and stable water supply for a long period.
Brief Description of Drawings
[0013]
FIG. 1 is a configuration diagram of a humidifying apparatus according to a first
embodiment.
FIG. 2 is an enlarged view of a humidifying element portion of the humidifying apparatus.
FIG. 3 is a perspective view of the humidifying element.
FIG. 4 is an exploded perspective view of the humidifying element.
FIG. 5 is a front view of the humidifying element.
FIG. 6 is an arrow sectional view taken along line X-X shown in FIG. 5.
FIG. 7 is a bottom view of a water storing section viewed from below.
FIG. 8 is a sectional view of a peripheral portion of the water storing section.
FIG. 9 is a sectional view of a peripheral portion of a water storing section shown
as a comparative example.
FIG. 10 is a sectional view showing an example of the peripheral portion of the water
storing section.
FIG. 11 is a sectional view showing an example of the peripheral portion of the water
storing section.
FIG. 12 is a sectional view showing an example of the peripheral portion of the water
storing section.
FIG. 13 is a sectional view showing an example of the peripheral portion of the water
storing section.
FIG. 14 is a sectional view showing an example of the peripheral portion of the water
storing section.
FIG. 15 is a sectional view showing an example of the peripheral portion of the water
storing section.
FIG. 16 is an arrow sectional view taken along line Z-Z shown in FIG. 15.
Description of Embodiments
[0014] A humidifying element and a humidifying apparatus according to an embodiment of the
present invention are explained in detail below with reference to the drawings. Note
that the present invention is not limited by the embodiment.
First Embodiment.
[0015] FIG. 1 is a configuration diagram of a humidifying apparatus 1 according to a first
embodiment. A humidifying element 2 is incorporated in the humidifying apparatus 1.
A blower 5 for feeding the air in a room into the humidifying element 2 and blowing
out the air into the room is incorporated on a ventilation upstream side or a ventilation
downstream side of the humidifying element 2.
[0016] The humidifying apparatus 1 includes the humidifying element 2, a water supply pipe
3 connected to a water supply source such as waterworks to feed water for humidification
to the humidifying element 2, a water discharge pipe 4 for discharging the water remaining
not used for the humidification by the humidifying element 2 to the outside, the blower
5 that allows an air flow to pass through the humidifying element 2, a control device
6 that performs, for example, control of the blower 5 and an electromagnetic valve
of a water supply system (a water supply valve 3a), and a drain pan 7 that receives
waste water and discharges the waste water to the outside.
[0017] FIG. 2 is an enlarged view of the portion of the humidifying element 2 of the humidifying
apparatus 1. One or a plurality of humidifying elements 2 are directly set on the
drain pan 7. Corner portions on both sides of top structures of the humidifying elements
2 are insertably and removably held by, for example, guide rails (not shown in the
figure) suspended on partition walls and a front side inner wall surface of a main
body box body. A water supply system including the water supply valve 3a that supplies
water for humidification and interrupts the supply is connected to the humidifying
elements 2. The water discharge pipe 4 is connected to the drain pan 7.
[0018] The water supply system that feeds the water for humidification to the humidifying
elements 2 is configured as a water channel including, besides the water supply valve
3a that adjusts the pressure and the flow rate of the water supplied to the humidifying
element 2, a strainer that prevents intrusion of dust into the water supply system
and the water supply pipe 3 for water feeding. All of connecting portions of the water
supply system excluding a connecting portion to the water supply source side are desirably
integrated in the drain pan 7.
[0019] FIG. 3 is a perspective view of the humidifying element 2. FIG. 4 is an exploded
perspective view of the humidifying element 2. FIG. 5 is a front view of the humidifying
element 2. FIG. 6 is an arrow sectional view taken along line X-X shown in FIG. 5.
The humidifying element 2 includes a large number of flat humidifying bodies 20 arranged
along a first direction (a direction indicated by an arrow Y in FIG. 5) to provide
gaps among the humidifying bodies 20. A diffusing member (a diffusion plate) 30 is
set in contact with upper parts of the humidifying bodies 20. The diffusing member
30 is formed to extend along the first direction. A plurality of humidifying bodies
20 are collectively in contact with one diffusing member 30.
[0020] A water storing section 12 that stores water to be supplied to the humidifying bodies
20 and a water supply port 11 for injecting water supplied from the water supply pipe
3 into the water storing section 12 are present above the humidifying bodies 20. A
water discharge section 13 and a water discharge port 13a for receiving water remaining
without being used for humidification from the humidifying bodies 20 and discharging
the water are present below the humidifying bodies 20.
[0021] The humidifying bodies 20 are housed and fixed on the inside of the casing 10. The
water supply port 11, the water storing section 12, and the water discharge section
13 are formed in the casing 10. In the casing 10, a structure wall 14 that connects
the water storing section 12 serving as an upper structure and the water discharge
section 13 serving as a lower structure is formed. Water accumulates in the water
storing section 12 from the water supply port 11, penetrates into the diffusing member
30 and spreads to the humidifying bodies 20, and humidifies the air flowing in the
gaps among the humidifying bodies 20. Excess water not evaporated in the humidifying
bodies 20 flows out to the outside of the casing 10 from the water discharge section
13 in a lower part.
[0022] The casing 10 is formed by, for example, injection molding by thermoplastic such
as ABS resin, PS resin, or PP resin. The casing 10 is divided into two components,
that is, a casing 10a and a casing 10b. The casing 10a and the casing 10b are integrated
by sandwiching the humidifying bodies 20 with the casing 10a and the casing 10b and
joining engaging sections 15 of the casing 10a and the casing 10b.
[0023] In the casing 10a and the casing 10b, portions formed as the water storing section
12, portions formed as the water discharge port 13a, and opening sections 10c for
introducing humidified air into the humidifying bodies 20 are respectively provided.
The water supply port 11 for supplying water to the water storing section 12 is provided
in the casing 10b. On the inner side of the casing 10, a housing space for housing
the humidifying bodies 20 is provided.
[0024] Positioning protrusions 17 for regulating the positions of the humidifying bodies
20 are provided in portions of the casing 10 in contact with the humidifying bodies
20. As the humidifying bodies 20, there are some humidifying bodies that soften when
containing water and are deformed by the weight of water. Therefore, by regulating
the positions of the humidifying bodies 20 in the outer peripheral portions of the
humidifying bodies 20 in contact with the casing 10, it is possible to secure dimensions
of channels among the humidifying bodies 20 and allow the air to uniformly flow.
[0025] Consequently, a decrease in a pressure loss of the humidifying element 2 is reduced.
The entire surfaces of the humidifying bodies 20 are effectively used as humidifying
surfaces. Therefore, an effect that a humidifying amount increases compared with when
the humidifying bodies 20 are distorted can be expected. Note that the water storing
section 12 can be formed integrally with the diffusing member 30 and housed in the
casing 10.
[0026] The water supply pipe 3 is connected to the water supply port 11 to supply water
to the water storing section 12. Therefore, the water supply port 11 is provided further
on the upper surface side than the humidifying bodies 20 in an upper part of the humidifying
element 2. The shape of the water supply port 11 is a shape matching the water supply
pipe 3. For example, a convex band (a fold back) can be formed over the circumferential
length of the water supply port 11 or the water supply port 11 can be bound by a hose
band to prevent the water supply pipe 3 from easily come off.
[0027] When a water supply amount is too excessive with respect to a humidifying amount,
an amount of water flowing from the water discharge section 13 without being used
for humidification is large and a useless water amount increases. Therefore, it is
desirable to provide a mechanism for reducing a water amount (e.g., an orifice 21
shown in FIGS. 3, 4 and 6) and adjust a flow rate. In the flow rate adjustment, it
is necessary to make it possible to supply a flow rate larger than a maximum humidifying
amount of the humidifying element 2. The position and the like of the water supply
port 11 are not limited as long as the water supply port 11 can supply water from
upper parts of the humidifying bodies 20. However, when, for example, occurrence of
a water leak or the like from a joint of the water supply pipe 3 and the water supply
port 11 is taken into account, by disposing the water supply port 11 on an upstream
side of the air to be humidified, water scattered to the upstream side by a flow of
an air current is guided to a downstream side, that is, the humidifying element 2
side. It is possible to reduce a scattering distance of the water to the periphery.
[0028] The water storing section 12 is provided above the humidifying bodies 20. A plurality
of water injection holes 12a are formed on the bottom surface of the water storing
section 12. A cylindrical wall surface 12b extending downward from the water injection
hole 12a portion is formed on the outer side of the water storing section 12. A cutout
(a communication port) 12c is formed at the distal end of the cylindrical wall surface
12b. The distal end of the cylindrical wall surface 12b is in contact with the diffusing
member 30. On the inner side of the water storing section 12, a cylindrical water
guide pipe 100 extending up and down is formed in a position avoiding the water injection
hole 12a. In the water guide pipe 100, an inflow port for causing water to flow into
the inside of the water guide pipe 100 is formed in a position lower than the upper
end of the water storing section 12. In this embodiment, the upper end of the water
guide pipe 100 is in a position lower than the upper end of an outer wall of the water
storing section 12. An opening on the upper end side is the inflow port. When the
upper end of the water guide pipe 100 is higher than the upper end of the outer wall
of the water storing section 12, an opening only has to be provided in a position
lower than the outer wall of the water storing section 12 and formed as the inflow
port.
[0029] A tabular water guide member 110 is held between the water storing section 12 and
the diffusing member 30. The water storing section 12 and the diffusing member 30
are integrally combined. An integral component of the water storing section 12 and
the diffusing member 30 is sandwiched and held between the casing 10a and the casing
10b. A water level sensor 8 for detecting a water level of the water storing section
12 can be set in the water storing section 12. The detected water level can be fed
back to control opening and closing of the water supply valve 3a with the control
device 6.
[0030] The diffusing member 30 is formed of a porous tabular material. To penetrate water
and supply the water to the humidifying bodies 20, the surface of the material is
desirably hydrophilic. Permeability is improved by the hydrophilicity and a water
supply amount increases. Because the diffusing member 30 comes into contact with water,
the diffusing member 30 is desirably formed of a material less easily deteriorated
by the water, for example, a porous material made of resin including polyester such
as PET resin or PP resin, cellulose, or metal including titanium, copper, or stainless
steel. Hydrophilic treatment can be applied to the porous material to increase a hydrophilicity
degree of the surface of the material.
[0031] Like the diffusing member 30, the humidifying bodies 20 are formed of a porous tabular
material. Suitable conditions for the humidifying bodies 20 are the same as the conditions
for the diffusing member 30. Projecting sections 40 are provided on the surfaces of
the humidifying bodies 20. Intervals among the humidifying bodies 20 are maintained
by the projecting sections 40. The projecting sections 40 are formed by, for example
pressing a jig or the like against the humidifying bodies 20 and plastically deforming
pressed portions of the humidifying bodies 20. When two kinds of the humidifying bodies
20, on which arrayed positions of the projecting sections 40 are different, are alternately
arrayed, the humidifying bodies 20 have a function of keeping the intervals of the
humidifying bodies fixed. The intervals of the humidifying bodies only have to be
kept. Combs having cutouts equivalent to the humidifying body thickness can be engaged
with the humidifying bodies at fixed intervals to maintain the intervals or a structure
for keeping intervals by stacking a plurality of wavy humidifying bodies in a honeycomb
shape has no problem functionally.
[0032] The lower end of the diffusing member 30 and the upper ends of the humidifying bodies
20 are set partially in contact with each other. If the diffusing member 30 and the
humidifying bodies 20 are in contact, water smoothly flows down with the action of
surface tension. However, the lower end of the diffusing member 30 and the upper end
of the humidifying bodies 20 can be inserted into each other and coupled taking into
account the influence of fluctuation during assembly and vibration during transportation.
[0033] A flow of water from the water supply port 11 to the humidifying bodies 20 is explained.
The water supplied from the water supply port 11 flows into the water storing section
12. The water flowed into the water storing section 12 flows from the water injection
holes 12a on the bottom surface of the water storing section 12 and runs on the cylindrical
wall surface 12b having the cutout 12c to be absorbed by the diffusing member 30.
The water flows down while spreading to the inside of the diffusing member 30 and
reaches the lower end of the diffusing member 30.
[0034] Because the lower end of the diffusing member 30 and the upper ends of the humidifying
bodies 20 are in contact, the flowed-down water runs from sections of the contact
to the humidifying bodies 20 and flows down with the action of the surface tension.
The water flows down while spreading to the insides of the humidifying bodies 20 and
being contained in the entire humidifying bodies 20 and drips from the lower ends
of the humidifying bodies 20. At this point, moisture is taken from the surface of
the humidifying bodies 20 by the air ventilated among the humidifying bodies 20. The
air is discharged from the humidifying element 2 as humidified air. Therefore, a water
amount dripped and discharged from the lower ends of the humidifying bodies 20 is
a water amount obtained by subtracting a water amount taken from the humidifying bodies
20 as the humidified air from a water amount supplied from the water supply port 11.
[0035] In the series of flow of the water, a relation between the water level of the water
stored in the water storing section 12 and the water injection hole 12a is explained.
When the water is fed to the water injection hole 12a, flowing water resistance is
present. Briefly, there is a relation of the following expression between a flow rate
Q1 of the water passing the water injection hole 12a and a water level h of the water
stored in the water storing section 12.
where, a and b represent constants related to flowing water resistance due to the
dimensions of the water injection hole 12a.
[0036] For example, when hard components included in the supply water and vaporization residues
such as silica and iron rust deposit in the water injection hole 12a, a and b decrease
and the flow rate Q1 of the water flowing in the water injection hole 12a decreases.
Further, a water supply amount Q of the water supplied from the water supply port
11, time t from a start of the water supply, and a water level change h(t) have the
following relation.
where, A represents the bottom area of the water storing section 12.
[0037] In a state in which a sufficient time elapses after the water supply, t is replaced
with ∞ in Expression (2) and the following expression is obtained:
[0038] Further, when Expression (3) is substituted in Expression (1), the following relation
is obtained:
[0039] That is, the water level h of the water stored in the water storing section 12 is
determined such that the flow rate Q1 of the water passing through the water injection
hole 12a is equal to the water supply amount Q from the water supply port 11. Therefore,
when hard components of the supply water and vaporization residues such as silica
and iron rust deposit in the water injection hole 12a as time elapses, a and b decrease.
Because the water level h of the water storing section 12 rises according to Expression
(3), the flow rate Q1, that is, a humidifying amount is controlled to be fixed.
[0040] In this way, the humidifying element 2 that supplies the water from the water storing
section 12 provided above the humidifying bodies 20 via the water injection hole 12a
and the diffusing member 30 has a function of controlling the humidifying amount to
be fixed even when time elapses. However, an allowable upper limit value of a water
level rise is present according to the dimensions of the water storing section 12
or the casing 10. From Expression (2), time until the water level reaches a state
of a fixed water level increases when a decreases. Therefore, time is required from
the start of the water supply until the humidifying amount stabilizes. Such a state
is undesirable in the humidifying apparatus. Therefore, it is necessary to prevent
the vaporization residues from depositing in the water injection hole 12a as much
as possible even when time elapses.
[0041] FIG. 7 is a bottom view of the water storing section 12 viewed from below. FIG. 8
is a sectional view of a peripheral portion of the water storing section 12. FIG.
9 is a sectional view of a peripheral portion of a water storing section 112 shown
as a comparative example. In the comparative example shown in FIG. 9, a cylindrical
wall surface 112b obtained by extending the inner surface of a water injection hole
112a downward is formed at the lower end of the water injection hole 112a. A cutout
is not formed at the distal end of the cylindrical wall surface 112b.
[0042] Gas components such as oxygen and nitrogen are dissolved in the supplied water. In
particular, in winter when humidification is necessary, a dissolved gas amount is
large because underwater temperature is low. The water is often in an oversaturated
state exceeding the solubility of the gas. In this case, the gas separates from the
water and air bubbles 91 are easily generated. However, the air bubbles 91 are generated
on a surface part having unevenness. In FIG. 9, because the distal end of the cylindrical
wall surface 112b is in contact with the diffusing member 30, the air bubbles 91 easily
adhere to a part where the diffusing member 30 is in contact with the water. The generated
air bubbles 91 gradually increase volume and soon cover the surface of the diffusing
member 30, which is a water feed path. The water passage amount of the diffusing member
30 decreases. Therefore, the humidifying amount decrease.
[0043] On the other hand, in FIG. 8, the cylindrical wall surface 12b including the cutout
12c opened in a part of the side surface is formed. The inside of the cylindrical
wall surface 12b is opened to the atmosphere through the cutout 12c. Therefore, even
when the air bubbles 91 adhere to the diffusing member 30, the air bubbles 91 touch
the atmosphere. Therefore, the air bubbles 91 quickly disappear. As a satisfactory
water passage state is easily maintained. It is possible to secure a stable humidifying
amount.
[0044] Above the water storing section 12, a communication port 18 that causes the outside
of the casing 10 and the water storing section 12 to communicate is formed. Therefore,
the water storing section 12 is opened to the atmosphere. Further, because the communication
port 18 is provided above the water supply port 11, the inside of the space of the
water storing section 12 is always kept at the atmospheric pressure. The water pressure
in the bottom surface portion of the water storing section 12 is the water-gage pressure
of the water level. Therefore, it is possible to reduce the influence of fluctuation
in supply pressure and secure a fixed humidifying amount.
[0045] A stop of the humidifying operation at the time when humidification is unnecessary
such as night is explained. For example, when nobody is in a room and humidification
is unnecessary, for example, at night, the humidifying operation of the humidifying
apparatus 1 is sometimes stopped. In this case, it is undesirable in terms of sanitation
to leave the humidifying element 2 untouched for a long time in a wet state. When
bacteria and mold in the air adhere to a wet portion and propagate, there is concern
that the bacteria and mold spores are conveyed by ventilated air passing the surface
of the humidifying element 2 and discharged into the room when the humidifying operation
is resumed. As a method of suppressing the propagation of the bacteria and the mold,
it is effective to dry the humidifying element 2 as soon as possible.
[0046] From such a view point, when the humidifying apparatus 1 is stopped, it is desirable
to operate the blower 5 after closing the water supply valve 3a according to control
from the control device 6 and perform control for drying the humidifying element 2.
To reduce a drying time for the humidifying element 2, it is necessary to dry the
water storing section 12 early. However, because the water storing section 12 has
a water tank shape, it is difficult to ventilate and dry the water storing section
12. Therefore, after the water supply valve 3a is closed, it is important to cause
the water in the water storing section 12 to quickly flow out toward the diffusing
member 30.
[0047] FIG. 10 is a sectional view showing an example of a peripheral portion of the water
storing section 12. In FIG. 10, the bottom surface of the water storing section 12
inclines to be the lowest in the water injection hole 12a portion. Therefore, after
the water supply valve 3a is closed, the water in the water storing section 12 smoothly
flows down toward the water injection hole 12a. Therefore, the water in the water
storing section 12 easily flows out to the outside through the water injection hole
12a. It is possible to achieve early drying in the water storing section 12.
[0048] FIG. 11 is a sectional view showing an example of the peripheral portion of the water
storing section 12. In FIG. 11, the bottom surface of the water storing section 12
is formed by a curved surface and inclined to be the bottom in the water injection
hole 12a. Note that the bottom surface of the water storing section 12 can be formed
by a plane and a curved surface.
[0049] The material of the water storing section 12 can be a water repellent material such
as PP or PTFE or, even if the water repellent material is not used, water repellent
treatment can be applied to the surface of the water storing section 12 such that
the water less easily stay in the water storing section 12. Further, from the viewpoint
of hygiene, antibacterial treatment or mold prevention treatment can be applied to
the water storing section 12, the diffusing member 30, the humidifying bodies 20,
and the casing 10.
[0050] Another example for suppressing a decrease in a humidifying amount due to vaporization
residues caused in the water storing section 12 is explained. FIG. 12 is a sectional
view showing an example of the peripheral portion of the water storing section 12.
FIG. 13 is a sectional view showing an example of the peripheral portion of the water
storing section 12. In FIG. 12, a projecting section 70 is provided in the bottom
of the water storing section 12 to surround the water injection hole 12a. In FIG.
13, a recessed section 80 is provided in the bottom of the water storing section 12
to surround the water injection hole 12a.
[0051] The vaporization residues 16 accumulate and deposit on the bottom surface of the
water storing section 12 because the vaporization residues 16 have specific weight
larger than the specific weight of water. When the water in the water storing section
12 flows toward the diffusing member 30 (the water injection hole 12a), the vaporization
residues 16 deposited on the bottom surface also flow toward the diffusing member
30. Because the projecting section 70 is provided in the bottom of the water storing
section 12 to surround the water injection hole 12a, the vaporization residues 16
are dammed by the projecting section 70 and suppressed from intruding into the diffusing
member 30.
[0052] Note that, to improve drainage of the bottom surface and achieve improvement of hygiene,
it is desirable to fragment a part of the projecting section 70 to allow the water
to flow from a fragmented portion. When the recessed section 80 is provided as shown
in FIG. 13, the vaporization residues 16 having the specific weight larger than the
specific weight of the water enter the recessed section 80. Therefore, intrusion into
the diffusing member 30 is suppressed and the drainage is secured. Note that a part
of the recessed section 80 can be fragmented to provide a fragmented portion.
[0053] FIG. 14 is a sectional view showing an example of the peripheral portion of the water
storing section 12. In FIG. 14, a capturing member 90 serving as a core of the vaporization
residues 16 is provided on the bottom surface of the water storing section 12. In
a state in which water is immersed in the water storing section 12, the vaporization
residues 16 in the water grow using components of the capturing member 90 as cores
and precipitate and fix on the surface of the capturing member 90. Therefore, it is
possible to suppress intrusion of the vaporization residues 16 into the diffusing
member 30.
[0054] The capturing member 90 is formed of a material serving as a core of growth of calcium
carbide, silica, iron, and the like included in supplied water. For example, a substance
containing calcium carbide such as calcite or aragonite is suitable for the calcium
carbide, a silica compound such as quartz is suitable for the silica, and a copper
material is suitable for the iron.
[0055] As the capturing member 90, the respective components can be separately disposed
in the water storing section 12 or can be changed to a powder state, mixed, and equalized
and thereafter solidified by a binder or the like and used. Further, the material
of the water storing section 12 can be a water repellent material such as PP or PTFE
or, even if the water repellent material is not used, water repellent treatment can
be applied to the surface of the water storing section 12 such that the water less
easily stay in the water storing section 12. Further, from the viewpoint of hygiene,
antibacterial treatment or mold prevention treatment is desirably applied to the water
storing section 12, the diffusing member 30, the humidifying bodies 20, and the casing
10.
[0056] The inclination of the bottom surface of the water storing section 12 explained above
and the configuration in which the projecting section 70, the recessed section 80,
or the capturing member 90 is provided on the bottom surface of the water storing
section 12 can be combined as appropriate.
[0057] FIG. 15 is a sectional view showing an example of the peripheral portion of the water
storing section 12. FIG. 16 is an arrow sectional view taken along line Z-Z shown
in FIG. 15. In FIG. 16, the water guide pipe 100 is indicated by a broken line. On
the inner side of the water storing section 12, the cylindrical water guide pipe 100
extending up and down avoiding the water injection holes 12a is formed. At the lower
end of the water guide pipe 100, a water-guide-pipe open hole 12d piercing through
the bottom surface of the water storing section 12 is formed. On the outer side of
the bottom surface of the water storing section 12, a surrounding wall 12e projecting
downward to surround the circumference of the water-guide-pipe open hole 12d and the
cylindrical wall surfaces 12b is formed. A projection amount of the cylindrical wall
surfaces 12b and a projection amount of the surrounding wall 12e are equal. The distal
ends of both of the cylindrical wall surfaces 12b and the surrounding wall 12e are
in contact with the diffusing member 30.
[0058] A tabular water guide member 110 formed in size fit in the inner side of the surrounding
wall 12e is provided between the water storing section 12 and the diffusing member
30. In the water guide member 110, through-holes 110a larger than the outer diameter
of the cylindrical wall surfaces 12b are formed in positions corresponding to the
water injection holes 12a (positions overlapping the water injection holes 12a in
plan view). The water guide member 110 is in contact with the diffusing member 30.
[0059] When the vaporization residues 16 intrude into the water injection holes 12a or the
vaporization residue components adhere to and deposit on the inner surfaces of the
water injection holes 12a, a water injection amount decreases. In this case, the water
level h rises as explained above. Because the upper end of the water guide pipe 100
is lower than the outer wall of the water storing section 12, when the water level
h rises, the water flows into the water guide pipe 100 without overflowing from the
water storing section 12.
[0060] The supply water flowed into the water guide pipe 100 flows on the water guide member
110 and flows down from the through-holes 110a to the diffusing member 30. If the
through-holes 110a are adjusted to a proper hole diameter, the supply water is evenly
distributed to the through-holes 110a and flows down to the diffusing member 30. According
to this action, even when the water injection amount from the water injection holes
12a decreases and the water level h substantially rises, the supply water does not
overflow from the water storing section 12. It is possible to uniformly supply the
water to the diffusing member 30. When the water guide member 110 is not provided,
a lot of the supply water penetrates the diffusing member 30 from a portion right
under the water-guide-pipe open hole 12d. Therefore, it is difficult to uniformly
supply the water. However, in this embodiment, it is possible to cause, with the water
guide member 110, the supply water to flow down to the positions corresponding to
the water injection holes 12a and realize uniform water supply. By surrounding the
water-guide-pipe open hole 12d with the surrounding wall 12e, the supply water less
easily leaks to the outside.
[0061] Note that, in this embodiment, the water guide pipe 100 is formed near the outer
wall of the water storing section 12. More specifically, the outer wall is formed
to be included in a part of the water guide pipe 100. However, the water guide pipe
100 can be formed in a position away from the outer wall.
[0062] The cutout 12c functioning as the communication port formed at the distal end of
the cylindrical wall surface 12b only has to be capable of causing the inside of the
cylindrical wall surface 12b to communicate with the outside and allow the air bubbles
to escape. Therefore, the communication port can be formed as a hole rather than the
cutout. However, because the air bubbles is easily generated on the surface of the
diffusing member 30, it is possible to more easily allow the air bubbles to escape
by forming the communication port further on the distal end side.
[0063] With the humidifying element 2 and the humidifying apparatus 1 configured as explained,
it is possible to achieve uniform supply of water to the plurality of humidifying
bodies 20. It is possible to achieve stable water supply to the humidifying bodies
20 for a long period. It is possible to simplify the configuration of the humidifying
element 2 and achieve facilitation of assemblability. It is possible to achieve an
increase in the humidifying amount by the humidifying element 2. It is possible to
achieve improvement of hygiene.
Reference Signs List
[0064]
- 1
- humidifying apparatus
- 2
- humidifying element
- 3
- water supply pipe
- 3a
- water supply valve
- 4
- water discharge pipe
- 5
- blower
- 6
- control device
- 7
- drain pan
- 8
- water level sensor
- 10, 10a, 10b
- casing
- 10c
- opening section
- 11
- water supply port
- 12
- water storing section
- 12a
- water injection hole
- 12b
- cylindrical wall surface
- 12c
- cutout (communication port)
- 12d
- water-guide-pipe opening hole
- 12e
- surrounding wall
- 13
- water discharge section
- 13a
- water discharge port
- 14
- structure wall
- 15
- engaging section
- 16
- vaporization residue
- 17
- positioning protrusion
- 20
- humidifying body
- 30
- diffusing member (diffusion plate)
- 40
- projecting section
- 70
- projecting section
- 80
- recessed section
- 90
- capturing member
- 91
- air bubble
- 100
- water guide pipe
- 110
- water guide member
- 112
- water storing section
- 112a
- water injection hole
- 112b
- cylindrical wall surface