[0001] The present invention refers to an assembly comprised of a piece of furniture (or
furniture element, as also referred to hereinafter) and a cooking electric appliance
fully built-in therein.
[0002] Nowadays, a considerable share of the electric household appliances market is covered
by built-in type electric appliances, i.e., electric appliances that are designed
to be fully embedded in furniture elements. For example, refrigerators and dishwashers
are already sold, which are designed to be substantially completely embedded in a
kitchen furniture - particularly, with an aesthetic front panel attached to the appliance
door-, to the extent that, when the door is closed, the household appliances are indistinguishable
from any other cabinet of the kitchen furniture. From an aesthetic point of view,
it would be desirable to be able to fully embed every electric appliance in the kitchen
furniture, in such a way that the electric appliances are all thoroughly concealed
by the kitchen furniture.
[0003] However, there are some electric household appliances that, presently, cannot be
fully embedded in the furniture. For example, cooking electric appliances such as
electric ovens, microwave ovens and warming drawers, are only partially embedded in
the kitchen furniture. Indeed, when these appliances are installed in a kitchen, their
door (usually made of metal and refractory, transparent materials), provided for closing
an access to a cooking cavity of the appliance, remains flush with the surrounding
furniture panels (usually made of laminated wood); thus, a visual continuity, or evenness,
of the kitchen furniture design results broken. This discontinuity may reduce an aesthetic
appeal of the kitchen furniture as a whole.
[0004] Household appliances like electric ovens, microwave ovens and warming drawers by
their very nature generate much heat and humidity that are not and cannot be completely
confined within the cooking cavity. Should the appliance be fully enclosed in a furniture
cabinet, the heat and the humidity that escape from the cooking cavity could not be
released into the environment, as instead required. This may provoke damages to the
kitchen furniture cabinet wherein the appliance is embedded and to the surrounding
pieces of kitchen furniture as well (causing for example deformations of the wooden
structure of the kitchen furniture, partial detachment of the lamination, and so on)
or even accidentally provoking fires, and/or malfunctions to the cooking electric
appliance itself due to the temperature rise (for example, the functionality of electromechanical
parts might be compromised). Moreover, when the oven is working, the oven door, even
though made of refractory materials, typically heats up, to an extent that straightforwardly
attaching thereto a wooden panel is not feasible.
[0005] The Italian patent N.
1248306 proposes a domestic oven, in particular an electric oven, of the built-in type that
tries to overcome such drawbacks. The electric oven can be completely concealed from
view by means of doors hinged onto the oven itself or by means of sliding doors, in
which the oven control panel constitutes a pull-out or retractable unit. In the retracted
position, the doors can be closed and the oven concealed, while in the pull-out position,
with the doors open, it is easier to read and operate the oven controls. Microswitches
are provided to cut off the power supply to the oven resistors and simultaneously
switch off the internal light when the doors are fully closed or when they have been
closed beyond a certain point.
[0006] The Applicant believes that the above-described solution is not totally satisfactory,
because it only partially achieves the aim of rendering a domestic oven fully built-in
in the kitchen furniture: the furniture panel provided to close the cabinet where
the oven is accommodated has to remain open in order for the oven to work (if the
furniture panel is closed, the oven cannot be turned on). In this way, not only the
overall aesthetic is very poor, but the solution is also very uncomfortable from a
practical use viewpoint: for example, if the furniture panel is hinged to the furniture
cabinet, it is likely that such panel encumbers a considerable portion of a surrounding
space when open. Whereas, if the furniture panel is of the sliding type, when open
it would prevent the user from accessing adjacent elements of the kitchen furniture.
[0007] Moreover, in the above-described solution, in order for a user to access the oven
cooking cavity, both the furniture panel and the oven door have to be opened, so that
the user has to perform a double operation, and the presence of the furniture panel
may complicate the operations of opening of the oven door and inserting/removing the
food from the cooking cavity.
[0008] In view of the state of the art outlined above, the Applicant has tackled the problem
of devising a satisfactory solution able to provide cooking electric appliances, such
as electric ovens, microwave ovens or warming drawers, that are suitable to be completely
embedded in a kitchen furniture element and able to properly operate without provoking
any damage to such kitchen furniture, concealing the electric appliances in a practical
(
e.
g., space efficiently) manner.
[0009] One aspect of the present invention relates to a built-in appliance assembly. The
built-in appliance assembly comprises a cooking appliance having a cooking cavity
for storing food to be cooked and an appliance door hinged to an appliance body for
closing access to said cooking cavity. The built-in appliance assembly further comprises
a furniture element having at least one compartment, delimited by a lower shelf, an
upper shelf, and two opposite shoulders of the furniture element, for housing the
cooking appliance, and panels for closing access to said at least one compartment.
In the solution according to the present invention, said panels comprise a first panel
hinged to the furniture element and coupled to the appliance door by means of a sliding
coupling configured to cause the appliance door to pivot together with the first panel
when the first panel is pivoted between a closed position closing access to the cooking
cavity and an open position allowing access to the cooking cavity. The panels further
comprises a second panel moveable between a closed position in which it closes access
to a top section of the cooking appliance and an open position allowing access to
said top section.
[0010] In this way, the user can open/close the cooking cavity by performing a single operation,
because the opening/closing of the first panel (which is coupled to the appliance
door) automatically causes the opening/closing of the appliance door.
[0011] Also, the appliance may remain essentially concealed also during its operation: the
first panel is kept closed during the appliance operation, without risk of damages
to the furniture, because the heat and humidity produced by the appliance are evacuated
outside the compartment thanks to the fact that the second panel is kept open.
[0012] Preferred features of the method are set in the dependent claims.
[0013] In an embodiment of the invention, the appliance door may comprise an internal plate
and an external plate, made of a refractory material.
[0014] In an embodiment of the invention, said sliding coupling may comprise at least one
sliding guide fixed to one among the first panel and the appliance door, and a sledge
fixed to the other one among the first panel and the appliance door, said sledge being
slidable along said sliding guide.
[0015] In an embodiment of the invention, the sliding coupling may be adapted to keep the
first panel and the appliance door parallel to one another and at a predetermined
distance.
[0016] In an embodiment of the invention, the appliance door may further comprise a thermally-insulating
material separating the internal and the external plates.
[0017] In an embodiment of the invention, the thermally-insulating material of the oven
door may comprise insulating panels having a ventilation duct therebetween, for allowing
circulation of an airflow.
[0018] In an embodiment of the invention, the furniture element may further comprises an
inlet port for facilitating air circulation inside it.
[0019] In an embodiment of the invention, the built-in appliance assembly may further comprise
spacers, fixed to the lower shelf for supporting the cooking appliance spaced apart
from the lower shelf.
[0020] In an embodiment of the invention, the cooking appliance may further comprise a user
interface provided in the top section of the cooking appliance, allowing a user to
set/verify/modify working parameters of the operation of the electric oven.
[0021] In an embodiment of the invention, the built-in appliance assembly may further comprise
a lifting mechanism mounted to at least one of the shoulders of the furniture element,
for moving the second panel along a substantially vertical direction between the closed
position and the open position.
[0022] These, and others, features and advantages of the solution according to the present
invention will be better understood by reading the following detailed description
of some embodiments thereof, provided merely by way of exemplary and non-limitative
examples, to be read in conjunction with the attached drawings, wherein:
Figure 1 schematically shows a front view of a furniture element for built-in electric appliances,
e.g. an electric oven, according to an embodiment of the invention;
Figure 2A schematically shows a front view of a built-in assembly comprising the furniture
element of Figure 1 having both a flap panel and main panel of the furniture element in an open position,
revealing a built-in electric oven embedded therein, with an enlargement of a detail
of coupling elements between the oven door and the main panel;
Figure 2B is a cross-sectional side view of the built-in assembly of Figure 2A according to IIB-IIB axis with another enlarged detail of the coupling elements between
the oven door and the main panel of the furniture element;
Figure 3A schematically shows a front view the appearance of the built-in assembly of Figure 2A when the oven is in operation, with the flap panel in the open position and the main
panel in a closed position, and
Figure 3B is a cross-sectional side view of the built-in assembly of Figure 3A according to IIIB-IIIB axis also with an enlargement cutaway view of the built-in electric oven showing
a ventilation airflow during operation.
[0023] Considering
Figure 1, a front view of a furniture element
100 for built-in electric appliances according to an embodiment of the invention there
is shown.
[0024] The furniture element
100, preferably, is of the standard type used for kitchens, adapted to embed electric
appliances (refrigerators, dishwashers, electric ovens
etc.). The furniture element
100 is substantially parallelepiped-shaped and has a bottom support portion
105 resting on floor once the furniture element
100 is arranged (e.g., in a kitchen). Preferably, although not necessarily, the support
portion
105 may comprise an air inlet port
110 for facilitating the circulation of air inside the furniture element
100.
[0025] Frontally, the furniture element
100 comprises panels, made for example in laminated wood or other aesthetically-finished
material, articulated to the furniture element structure for being openable to give
access to inner compartments of the furniture element itself.
[0026] According to an embodiment of the present invention, the furniture element
100 comprises at least a first panel, or main panel,
120a and a second panel, or flap panel,
120b. Additional panels may be provided, depending for example on the height of the furniture
element; in the shown example, a third panel
120c is provided above the flap panel
120b, and, below the main panel
120a, there is provided a fourth panel
120d.
[0027] The furniture element
100 accommodates, in the exemplary embodiment herein considered, a fully built-in electric
oven
205, which is visible referring jointly to
Figures 2A and 2B (respectively in front view and in cross-sectional side view according
to
IIB-IIB axis). The assembly formed by the furniture element
100 and the built-in electric oven accommodated therein will hereinafter also referred
to as "built-in appliance assembly
200".
[0028] The electric oven
205 is housed in a box-shaped compartment
210 of the furniture element
100, said compartment
210 being delimited by a lower shelf
210a, an upper shelf
210b, and two opposite shoulders
210c and
210d of the furniture element
100. The electric oven
205 rests on spacers arranged on the lower shelf
210a, in order to keep the bottom of the electric oven spaced apart from the surface of
the lower shelf
210a. For example, the spacers may be a pair of support rails
215, fixed to the lower shelf 210a at the two sides thereof (when the furniture element
is viewed frontally) and extending parallelly to each other. Alternatively, the spacers
may comprise a number of blocks,
e.g. four, arranged at respective corners of the lower shelf
210a.
[0029] The spacers allow a path for a ventilation airflow of the electric oven
205 from the rear side of the furniture element
100 (which may be totally or at least partially uncovered, i.e. open) to a front side
thereof (as will be described in greater detail in the following), passing through
the space under the electric oven
205, over the lower shelf 210a and between the spacers,
e.g. the support rails
215.
[0030] Both the main panel
120a and the flap panel
120b are arranged frontally to the compartment
210 and selectively close two different access portions of the compartment
210, namely the main panel
120a is associated with a lower access portion whereas the flap panel
120b is associated with an upper access portion of the compartment
210.
[0031] The third and fourth panels
120c and
120d shown merely as example in the drawings serve instead to close access to other compartments
provided in the furniture element 100 wherein the electric oven
205 is accommodated, which other compartments are provided for other purposes not related
to the electric oven
205 (
e.g., for storing foods, cooking tools, dishware, or even other built-in electric appliances).
[0032] Preferably, although not necessarily, the flap panel 120b is coupled to the shoulders
210c and
210d that delimit laterally the compartment 210 by means of a corresponding flap-lifting
mechanism
225 affixed thereto (in any suitable known manner, for example, by means of screws).
The flap lifting mechanism
225 is for example configured to enable the flap panel
120b moving along a substantially vertical direction from a closed position (which closes
the access to the upper portion of the compartment
210) to an open position (which allows accessing the upper portion of the compartment
210) and,
vice versa from the open position to the closed position. The flap lifting mechanism
225 may for example comprise an articulated quadrilateral manually operated by a user,
which can bring flap panel
120b into the open position by pulling the same upward, or into the closed position by
pulling the same downward (a handle may preferably be provided at the external surface
of the flap panel
120b, for facilitating the user operation). Alternatively, the flap lifting mechanism
225 may also comprise (an) actuator(s)
225a - such as an electric motor or one or more springs - that, upon activation by a user,
cause arms
225b of the articulated quadrilateral, fixed to the flap panel
125b, to pivot. In this way, it is possible to automatically move the flap panel
120b. The flap lifting mechanism
225 may be activated by a finger pressure applied on the flap panel
120b for moving the latter in the open position, while the flap panel
120b may be returned to the closed position by
e.g. actuating a pushbutton (not shown) provided, for example, on the flap lifting mechanism
225 or attached to the shoulders
210c.
[0033] According to an embodiment of the present invention, the main panel 120a is hinged
(at a lower side thereof) to the lower panel
210a of the furniture element
100 by means of hinges
230, for example conventional hinges used in construction of furniture. In addition,
the main panel
120a is coupled to an oven door 235 (as will be described in further detail in the following),
which is in turn hinged to a main body of the electric oven
205 by means of conventional oven door hinges
232. The oven door
235 comprises an internal plate
235a and an external plate
235b, preferably made of a refractory material. The internal and external plates
235a and
235b may be separated by a thermally-insulating material
235c (as will be described in greater detail in the following). The oven door
235,
i.e. the internal and external plates and the thermally-insulating material
235c, may be either transparent (as in conventional ovens) or they may be opaque to the
light. The oven door
235 may also comprise a different number of plates, for example 3.
[0034] Advantageously, according to the present invention, the coupling between the main
panel
120a and the oven door
235 is such that the main panel
120a and the oven door
235 pivot together between a closed position, in which the oven door
235 closes the access to a cooking cavity
240 of the electric oven
205 to an open position, in which the oven door
235 is open and allows accessing the cooking cavity
240.
[0035] In an embodiment of the present invention, the coupling between the main panel
120a and the oven door
235 comprises a sliding arrangement
250 partly provided on the main panel
120a and partly provided on the oven door
235. For example, at least one sliding guide is fixed to the main panel
120a on the inner surface thereof, facing the oven door
235. Complementarily, on the external surface of the oven door
235 facing the main panel 120a, at least one corresponding sledge guide is fixed, in
(a) position(s) matching the position of the sliding guide(s) on the main panel. In
the example at issue, two sliding guides
250a are provided, that are fixed (in any suitable manner, for example, by glue or screws)
to the inner surface of the main panel
120a, and two corresponding sledges
250b are fixed (in any suitable manner, for example by glue or screws) to the external
plate
235b of the oven door
235. It should be noted that in other embodiment according to the present invention the
sliding arrangement may comprises sliding guide(s) fixed to oven door and sledge guide(s)
fixed to the main panel.
[0036] The sledges
250b slidably engage the respective sliding guides
250a. For example, as shown in
Figure 2A, the sliding guides
250a comprise a coupling portion with a "T"-shaped transversal cross-section, and the
sledges
250b have a "C"-shape transversal cross-section, sized to embrace (with a sufficient play)
the sliding guides
250a. Thanks to the sliding arrangement
250, when the main panel
120a is pivoted (around the rotation axis defined by the hinges
230) from the closed position to the open position by a user (a handle may preferably
be provided at the external surface of the main panel, for facilitating the user operation),
the sliding arrangement
250 causes the oven door to be also pivoted (around the rotation axis defined by the
hinges
232) from the closed position to the open position together with the main panel
120a. The sledges
250b, in the movement from the closed position to the open position, slide along the sliding
guides
250a from a first position to a second position. In this way, the main panel 120a and
the oven door
235 can pivot about their respective hinges
230 and
232, while remaining always parallel to each other, and at a predetermined distance
d imposed by the sliding arrangement
250. In this way, it is possible for a user to access the cooking cavity
240 by means of a single opening action, by acting on the main panel
120a, which brings both the main panel
120a and the oven door
235 from the closed position to the open position at the same time. Similarly, the user
may close the cooking cavity
240 with a single closing action, acting on the main panel
120a, which brings both the main panel
120a and the oven door
235 from the open position to the closed position at the same time.
[0037] Figures 3A and 3B show the built-in assembly
200 in front view and lateral cross-sectional views according to
IIIB-IIIB axis, respectively, showing its appearance while in operation.
[0038] As shown in the figures, during the operation of the oven
205 only the flap panel
120b is in the open position (the main panel
120a being instead closed). Thus, only a top portion
305 of the electric oven
205 is exposed to the view. Such oven top portion
305 that remains exposed during the oven operation preferably comprises a user interface
310 allowing a user to set/verify/modify working parameters of the operation of the electric
oven
205 (
e.g., cooking temperature, cooking times, cooking type,
etc.). In addition, the oven top portion
305 further comprises a ventilation slit
315 for expelling hot air from the oven
205.
[0039] Preferably, between the internal plate
235a and the external plate
235b of the oven door
235, an air space
325 is provided (for example, the air space
325 may be defined in the thermally-insulating material
235c thermally insulating the two door plates
235a and
235b: two thermally-insulating panels
320 are provided amongst the two door plates
235a and
235b, between which the air space
235 is formed). The air space
325 defines a ventilation duct (hereinafter denoted by the same reference numeral
325 as the air space) for enabling circulation of an airflow
330, which ventilation duct
325 has an inlet provided in a lower part of the oven door
235 and an outlet in a upper part thereof. Advantageously, the outlet of the ventilation
duct
325 is in fluid communication with the ventilation slit
315 provided in the top portion
305 of the electric oven
205.
[0040] The oven top portion
305 and the user interface
310 are accessible by a user when the flap panel
120b is in the open position.
[0041] In the embodiment according to the present invention, the built-in assembly
200 achieves a proper air circulation allowing the built-in electric appliance (i.e.,
electric oven
205) to operate without risk of overheating and/or accumulating humidity in the compartment
210 of the furniture element
100.
[0042] During the operation of the electric oven
205 the air in the compartment
210, where the oven
205 is accommodated, is heated up by the heat emitted by the electric oven
205; the heated-up air flows, due to convection, around the electric oven
205 and flows out of the compartment
210 through the access left open by the flap panel
120b (which, as already mentioned, is in the open position during the oven operation).
Advantageously, air is sucked by convention from the rear of the furniture element
100 (
e.g., coming from the environment
via the inlet port
110) into the compartment
210; thus, fresh air is allowed entering into the compartment
210 thereby promoting a cooling thereof and of the electric oven
205.
[0043] As should be apparent to those skilled in the art, air
335 flows also between the support rails
215 and between the bottom of the oven
210 and the main panel 120a, from the rear towards the front of the compartment
210. At the front of the compartment 210, air
340 flows between the main panel
120a and the oven door
235 (which, as mentioned in the foregoing, are spaced apart by a distance
d) and exits the furniture element
100 through the access left open by the flap panel
120b in the open position. In this way, the temperature of the main panel
120a is advantageously prevented from excessively rise, being kept sufficiently low to
prevent damages to the main panel
120a (which, thanks to this, can thus be made of a wooden material totally similar to
that of the remaining kitchen furniture).
[0044] At the same time, air
330 flows through the ventilation duct
325 provided in the oven door
235 from the inlet to the outlet thereof, exits from the electric oven 205 through the
ventilation slit
315 and is released into the environment surrounding the furniture element
100, again, through the access left open by the flap panel
120b in the open position.
[0045] In other words, the air 335 flowing under the oven
210 is split so as to flow partly into the door
235 (air
330) and partly between the door
235 and the main panel 120a (air
340).
[0046] In this way, during the operation a proper air circulation in the compartment
210 housing the electric oven
205 is ensured. A temperature value inside the whole compartment
210 may thus be advantageously kept within a predetermined range. In the embodiment according
to the present invention, this is possible thanks to the air flowing out from the
compartment
210 through the access left open by the flap panel
120b in the open position. Thus, damages to the furniture element
100 due to high temperature values are prevented.
[0047] It should be apparent to those skilled in the art that also heated air along with
moisture particles (i.e., humidity) compelled by a fan ― comprised in the electric
oven 205 and not shown in the figures - out from the electric oven
205 through the ventilation slit
315 (as in a ventilated cooking mode) are released from the compartment
210 into the external environment. Moreover, heat generated by the electric oven
205 can be transferred outside the compartment
210 through the access left open by the flap panel
120b in the open position.
[0048] The just mentioned advantages are achieved, in the built-in assembly
200 according to an embodiment of the present invention, while the electric oven
205 remains substantially hidden to the sight by the main panel
120a even during its operation. Moreover, the flap panel
120b in the open position does not encumber useful space surrounding the furniture element
100 and, at the same time, comfortably allows accessing the user interface
310.
[0049] Preferably, the built-in appliance assembly
200 according to an embodiment of the present invention comprises a safety arrangement
(not shown in the drawings), which prevents the overheating of the compartment
210 even if the flap panel
120b is closed while the electric oven
205 is in operation. For example, at least a microswitch may be provided in one (or both)
the shoulders
210c and
210d and electrically connected to the electric oven
205. The microswitch is configured for interrupting an electric power supply to the electric
oven whenever the flap panel
120b is in the closed position. Thus, the electric oven
205 is prevented from operating when the flap panel
120b is in the closed position.
[0050] More preferably, according to a further embodiment of the present invention, if the
electric oven
205 comprises an electronic control unit (such as a microcontroller, not shown in the
figure), the lifting mechanism
225 may be electrically (
e.g., by a wire) or electromagnetically (
e.g., by a radio-frequency transmission) connected to the same. When the flap panel
120b is closed, a first signal is inputted to the electronic control unit from the lifting
mechanism
225. Therefore, the electronic control unit forces the electric oven
205 in a stand-by condition and, at the same time, stores (
e.g., in a storage memory) a cooking advancement information. When the flap panel
120b is opened again, a second signal is inputted to the electronic control unit from
the lifting mechanism
225. In response, the electronic control unit restarts the cooking operation according
to the cooking advancement information previously stored.
[0051] Alternatively, in a even further embodiment of the present invention, a temperature
sensor (
e.g., a thermocouple) may be provided (not shown in the drawings), electrically connected
to the electronic control unit, for measuring a temperature in the compartment
210. The electronic control unit, thus, may be configured for detecting when the temperature
inside the cavity
210 exceeds a predetermined safe value (
e.g., beyond which damages to the built-in appliance assembly
200 may occur). Whenever the exceeding of such predetermined safe value is detected (i.e.,
most likely when the flap panel
120b is in the closed position while the electric oven
205 is in operation), the electric oven
205 is forced in a stand-by condition until it is detected a temperature below the predetermined
safe value in the compartment
210. As in the just described further embodiment, a cooking advancement information may
be stored for restarting a cooking operation from it was interrupted.
[0052] Naturally, in order to satisfy local and specific requirements, a person skilled
in the art may apply to the solution described above many logical and/or physical
modifications and alterations. More specifically, although this solution has been
described with a certain degree of particularity with reference to one or more embodiments
thereof, it should be understood that various omissions, substitutions and changes
in the form and details as well as other embodiments are possible. Particularly, different
embodiments of the invention may even be practiced without the specific details (such
as the numerical examples) set forth in the preceding description to provide a more
thorough understanding thereof; conversely, well-known features may have been omitted
or simplified in order not to obscure the description with unnecessary particulars.
Moreover, it is expressly intended that specific elements and/or method steps described
in connection with any embodiment of the disclosed solution may be incorporated in
any other embodiment as a matter of general design choice.