HEATING COOKING APPARATUS

A heating cooking apparatus (1) includes a heating cooking chamber (10), a lid portion (20), and heat supply units (31), (32), and (34). The heating cooking chamber (10) includes an accommodation space 1A and an opening 11A. The opening 11A communicates with the accommodation space 1A. The lid portion (20) is configured to close the opening 11A. The lid portion (20) includes a see-through window portion (21). The see-through window portion (21) makes the accommodation space 1A visible. The see-through window portion (21) includes at least three glass plates (210). The at least three glass plates (210) include a heat-ray reflecting glass (212) that reflects heat rays, a first glass plate (213) located proximate to the accommodation space 1A, and a second glass plate (211) located opposite to the accommodation space 1A. The heat-ray reflecting glass (212) is located between a first glass plate (213) and a second glass plate (211). The first glass plate (213), the heat-ray reflecting glass (212), and the second glass plate (211) are arranged side by side in a line at intervals.

TECHNICAL FIELD

The present invention relates to a heating cooking apparatus.

BACKGROUND ART

Heating cooking apparatuses are known. A heating cooking apparatus includes a heating cooking chamber and a pull-out body. The heating cooking chamber includes an accommodation space. The pull-out body is integrated with an opening/closing door. The opening/closing door can close the accommodation space. The pull-out body is disposed to be able to be pulled out relative to the heating cooking chamber. Such a heating cooking apparatus as described above is built into a cabinet of a built-in kitchen.

PTL 1 discloses a heating cooking apparatus. Heating functions of the heating cooking apparatus disclosed in PTL 1 include a microwave heating function and a high-speed hot air heating function. The microwave heating function is a function of irradiating an object to be heated with microwaves. The high-speed hot air heating function is a function of blowing out hot air toward an object to be heated at high speed.

CITATION LIST

Patent Literature

SUMMARY OF INVENTION

Technical Problem

Unfortunately, in the heating cooking apparatus disclosed in PTL 1, in a case where the high-speed hot air heating function is used, the temperature of the surface (the temperature of the outer surface) of an opening/closing door (lid portion) may rise with a rise in the temperature inside the heating cooking chamber.

In light of the above problem, an object of the present invention is to provide a heating cooking apparatus that can reduce a rise in the temperature of an outer surface of a lid portion.

Solution to Problem

A heating cooking apparatus of the present invention includes a heating cooking chamber, a lid portion, and a heat supply unit. The heating cooking chamber includes an accommodation space and an opening. The accommodation space accommodates an object to be heated. The opening communicates with the accommodation space. The lid portion is configured to close the opening. The heat supply unit supplies heat into the accommodation space. The lid portion includes a see-through window portion. The see-through window portion makes the accommodation space visible. The see-through window portion includes at least three glass plates. The at least three glass plate include a heat-ray reflecting glass, a first glass plate, and a second glass plate. The heat-ray reflecting glass reflects heat rays. The first glass plate is located proximate to the accommodation space. The second glass plate is located opposite to the accommodation space. The heat-ray reflecting glass is located between the first glass plate and the second glass plate. The first glass plate, the heat-ray reflecting glass, and the second glass plate are arranged side by side in a line at intervals.

Advantageous Effects of Invention

According to a heating cooking apparatus of the present invention, it is possible to reduce a rise in the temperature of an outer surface of a lid portion.

DESCRIPTION OF EMBODIMENTS

An embodiment of a heating cooking apparatus according to the present invention will be described below with reference to the drawings. Note that, in the drawings, the same or equivalent components are denoted by the same reference numerals and signs, and description thereof will not be repeated.

With reference toFIG.1andFIG.2, a heating cooking apparatus1according to the present embodiment will be described.FIG.1andFIG.2are perspective views of the heating cooking apparatus1according to the present embodiment. More specifically,FIG.1illustrates the heating cooking apparatus1in an upper right diagonal direction from the front.FIG.2illustrates the heating cooking apparatus1in a lower right diagonal direction from behind.

The heating cooking apparatus1is used to heat and cook an object to be heated. The object to be heated is, for example, food. As illustrated inFIG.1, the heating cooking apparatus1includes a heating cooking chamber10, an operation panel unit12, a pull-out body13, and a housing14.

In the present embodiment, a side on which the operation panel unit12of the heating cooking apparatus1is disposed is defined as a front side, and a side opposite thereto is defined as a rear side. Further, a right side as viewed from the front side of the heating cooking apparatus1is defined as a right side, and a side opposite thereto is defined as a left side. Further, a side on which the operation panel unit12is disposed in a direction orthogonal to a front-rear direction and a left-right direction of the heating cooking apparatus1is defined as an upper side, and a side opposite thereto is defined as a lower side. Note that these directions are not intended to limit the directions of the heating cooking apparatus according to the present invention when the heating cooking apparatus is used.

The heating cooking chamber10has a box shape. The heating cooking chamber10internally includes an accommodation space1A. The accommodation space1A accommodates an object to be heated.

In the present embodiment, the heating cooking apparatus1includes, as heating cooking modes, a microwave heating mode, a first hot air circulation heating mode, a second hot air circulation heating mode, and a grill heating mode. The microwave heating mode is mainly a mode in which an object to be heated is heated and cooked through radiation of microwaves into the accommodation space1A. The first hot air circulation heating mode is mainly a mode in which an object to be heated is heated and cooked by circulating first hot air H1in the accommodation space1A. The second hot air circulation heating mode mainly includes a first mode and a second mode. The first mode is a mode in which an object to be heated is heated and cooked by directly blowing second hot air H2onto an upper surface of the object to be heated. The second mode is a mode in which the accommodation space1A is preheated in a short time by circulating the second hot air H2in the accommodation space1A. The grill heating mode is mainly a mode in which an object to be heated is heated and cooked by exposing the object to be heated to heat radiation.

The heating cooking chamber10includes a panel11. The panel11is disposed on the front side of the heating cooking chamber10. The panel11includes an opening11A. The opening11A is located at a substantially center portion of the panel11. The opening11A has a rectangular shape. The opening11A communicates with the accommodation space1A. Details of the panel11will be described below with reference toFIG.6.

The operation panel unit12receives operation from a user. The operation panel unit12is disposed further forward than the panel11. In other words, the operation panel unit12is disposed in front of the heating cooking chamber10. The operation panel unit12is located at an upper portion of the heating cooking apparatus1.

The pull-out body13can be pulled out freely relative to the accommodation space1A in a pull-out direction. More specifically, the pull-out body13is pulled out in the front direction of the heating cooking chamber10. The pull-out body13is located below the operation panel unit12. Details of the configuration of the pull-out body13will be described below with reference toFIG.3andFIG.4. The pull-out direction is substantially parallel to a front-rear direction.

The housing14accommodates the heating cooking chamber10. The housing14is an object having a rectangular parallelepiped shape with an open front side. As illustrated inFIG.2, the housing14includes a right wall14A, a left wall14B, an upper wall14C, a lower wall14D, and a rear wall14E.

Next, the pull-out body13will be further described with reference toFIG.1toFIG.5.FIG.3is a diagram illustrating a right side surface of the heating cooking apparatus1according to the present embodiment. More specifically,FIG.3illustrates the right side surface of the heating cooking apparatus1in a state where the housing14is removed.FIG.4is a diagram illustrating a left side surface of the heating cooking apparatus1according to the present embodiment. More specifically,FIG.4illustrates the left side surface of the heating cooking apparatus1in a state where the housing14is removed.FIG.5is a front view of the heating cooking apparatus1according to the present embodiment.

As illustrated inFIG.3andFIG.4, the pull-out body13includes a lid portion20, a placing portion131, a pair of left and right slide members132, and a support member133.

The lid portion20is configured to close the opening11A (seeFIG.1) of the panel11. As illustrated inFIG.5, the lid portion20is a plate-like member having a substantially rectangular shape. The lid portion20includes a see-through window portion21. The see-through window portion21is located at a substantially center portion of the lid portion20in the left-right direction and the up-down direction. The see-through window portion21makes the accommodation space1A (seeFIG.1) in the heating cooking chamber10visible. A configuration of the see-through window portion21will be described below with reference toFIG.12. Details of a configuration of the lid portion20will be described with reference toFIG.13toFIG.15.

As illustrated inFIG.3andFIG.4, an object to be heated can be placed on the placing portion131. The lid portion20includes a rear surface20A. The rear surface20A of the lid portion20faces the opening11A (seeFIG.1) of the panel11. The placing portion131is attached to the rear surface20A of the lid portion20.

The pair of left and right slide members132support the lid portion20. The pair of left and right slide members132support the placing portion131by supporting the lid portion20. The pair of left and right slide members132are attached to the rear surface20A of the lid portion20. The pair of left and right slide members132include a right slide member132a(seeFIG.3) and a left slide member132b(seeFIG.4). Each of the right slide member132a(seeFIG.3) and the left slide member132b(seeFIG.4) has the front-rear direction as a longitudinal direction.

The support member133supports the lid portion20. The support member133supports the placing portion131by supporting the lid portion20. The support member133is attached to a substantially center portion of the rear surface20A of the lid portion20in the left-right direction and a portion below the placing portion131. The support member133is a plate-like member with the front-rear direction as a longitudinal direction.

The support member133includes a rack portion. The rack portion includes a plurality of teeth. The heating cooking apparatus1includes a drive mechanism36to be described below with reference toFIG.11. The drive mechanism36is accommodated in an air intake space AR to be described below with reference toFIG.8. The drive mechanism36causes the pull-out body13to be in an opened state or a closed state by engaging with the rack portion of the support member133. The opened state of the pull- out body13is a state where the placing portion131of the pull-out body13is pulled out from the accommodation space1A. The closed state of the pull-out body13is a state where the placing portion131of the pull-out body13is pulled into the accommodation space1A.

Next, the panel11will be further described with reference toFIG.1toFIG.6.FIG.6is a front view of the heating cooking apparatus1according to the present embodiment. More specifically,FIG.6illustrates the heating cooking apparatus1in a state where the pull-out body13is removed.

As illustrated inFIG.6, the panel11is a rectangular plate-like member. The panel11includes a plurality of first through hole portions11B, a plurality of second through hole portions11C, a pair of third through hole portions11D, a fourth through hole portion11E, and a pair of fifth through hole portions11F, in addition to the opening11A. Hereinafter, the plurality of second through hole portions11C will be collectively referred to as an “exhaust hole portion11C”.

The plurality of first through hole portions11B are located at a portion below the opening11A of the panel11. The plurality of first through hole portions11B form four columns. In the present embodiment, each of the four columns is composed of six or seven first through hole portions11B disposed in a row along an up-down direction. Two columns of the four columns are located at a portion proximate to a right end of the panel11. The other two columns of the four columns are located at a portion proximate to a left end of the panel11. Hereinafter, the seven first through hole portions11B constituting each column except for the leftmost column among the four columns may be collectively referred to as an “air intake hole portion11BA”. Hereinafter, the six first through hole portions11B constituting the leftmost column among the four columns may be collectively referred to as an “exhaust hole portion11BB”. The air intake hole portions11BA communicate a space R to be described below with reference toFIG.7andFIG.8and the outside of the heating cooking apparatus1with each other. The air intake hole portions11BA are located upstream relative to a blown air flow BF that is blown out by a cooling fan40to be described below with reference toFIG.9toFIG.11.

The exhaust hole portion11C communicates the space R to be described below with reference toFIG.7andFIG.8and the outside of the heating cooking apparatus1with each other. The exhaust hole portion11C is located downstream relative to the blown air flow BF that is blown out by the cooling fan40to be described below with reference toFIG.9toFIG.11. Further, the exhaust hole portion11C is located on the panel11at a portion above the opening11A. The plurality of second through hole portions11C are disposed in a row from a right portion to a left portion of the panel11. Further, as illustrated inFIG.5, the exhaust hole portion11C is located between the pull-out body13(seeFIG.1) and the operation panel unit12in the up-down direction.

As illustrated inFIG.6, the pair of third through hole portions11D include a right third through hole portion11Da and a left third through hole portion11Db. The right third through hole portion11Da is located on the panel11at a portion to the right of the opening11A. The left third through hole portion11Db is located on the panel11at a portion to the left of the opening11A. The right slide member132adescribed with reference toFIG.3andFIG.4passes through the right third through hole portion1lDa of the panel11. The left slide member132bdescribed with reference toFIG.3andFIG.4passes through the left third through hole portion11Db of the panel11.

The fourth through hole portion11E is located on the panel11at a portion below the opening11A of the panel11and at a substantially center portion of the panel11in the left-right direction. The support member133described with reference toFIG.3andFIG.4passes through the fourth through hole portion11E of the panel11.

The pair of fifth through hole portions11F include a right fifth through hole portion11Fa and a left fifth through hole portion11Fb. The right fifth through hole portion11Fa faces the right air supply hole portion23Aa, which will be described below with reference toFIG.14, in the closed state of the pull-out body13. More specifically, the right fifth through hole portion11Fa is located on the panel11at a portion to the right of the opening11A and at a portion above the right third through hole portion11Da. The left fifth through hole portion11Fb faces the left air supply hole portion23Ab, which will be described below with reference toFIG.14, in the closed state of the pull-out body13. More specifically the left fifth through hole portion11Fb is located on the panel11at a portion to the left of the opening11A and at a portion above the left third through hole portion11Db. The closed state of the pull-out body13includes a state where the lid portion20described with reference toFIG.3andFIG.4closes the opening11A.

Next, a configuration of the heating cooking apparatus1will be further described with reference toFIG.1toFIG.6.

As illustrated inFIG.3andFIG.4, the heating cooking apparatus1further includes a pair of left and right connecting portions15and a pair of left and right slide rails16.

The pair of left and right connecting portions15connect the pair of left and right slide rails16and the heating cooking chamber10. The pair of left and right connecting portions15include a right connecting portion15a(seeFIG.3) and a left connecting portion15b(seeFIG.4). As illustrated inFIG.3, the heating cooking chamber10includes a right wall10A. The right connecting portion15ais attached to the right wall10A of the heating cooking chamber10. As illustrated inFIG.4, the heating cooking chamber10includes a left wall10B. The left connecting portion15h is attached to the left wall10B of the heating cooking chamber10. Configurations of the right connecting portion15aand the left connecting portion15bare substantially the same.

The pair of left and right slide rails16slidably support the pull-out body13in the front-rear direction. As illustrated inFIG.3andFIG.4, the pair of left and right slide rails16include a right slide rail16a(seeFIG.3) and a left slide rail16b(seeFIG.4).

The right slide rail16aand the left slide rail16bare attached to an outer surface of the heating cooking chamber10. More specifically, as illustrated inFIG.3, the right slide rail16ais attached to the right connecting portion15a.As illustrated inFIG.4, the left slide rail16bis attached to the left connecting portion15b.Each of the right slide rail16aand the left slide rail16bincludes a rail portion with the front-rear direction as a longitudinal direction. The rail portion of the right slide rail16aengages with the right slide member132a.The right slide member132ais slidably supported by the right slide rail16a.The rail portion of the left slide rail16bengages with the left slide member132b.The left slide member132bis slidably supported by the left slide rail16b.Configurations of the right slide rail16aand the left slide rail16bare substantially the same.

Next, the configuration of the heating cooking apparatus1according to the present embodiment will be further described with reference toFIG.1toFIG.8.FIG.7is a cross-sectional view of the heating cooking apparatus1along a section line VII inFIG.1.FIG.8is a cross-sectional view of the heating cooking apparatus1along a section line VIII inFIG.1.

As illustrated inFIG.7, the heating cooking chamber10includes an upper wall10C, a lower wall10D, and a rear wall10E, in addition to the right wall10A and the left wall10B. The accommodation space1A is formed by the right wall10A, the left wall10B, the upper wall10C, the lower wall IOD, and the rear wall10E. The accommodation space1A of the heating cooking chamber10has a substantially rectangular parallelepiped shape.

The heating cooking apparatus1further includes a first air sending unit31, a second air sending unit32, a microwave supply unit33, a grill unit34(seeFIG.8), and a damper unit35(seeFIG.8). The heating cooking apparatus1includes a space R. The space R is formed between an outer surface S10of the heating cooking chamber10and an inner surface S14of the housing14. The first air sending unit31, the second air sending unit32, and the grill unit34are examples of heat supply units. The space R is an example of a first space.

The first air sending unit31supplies first hot air H1into the accommodation space1A. In other words, the first air sending unit31executes a first hot air circulation heating mode. The first air sending unit31is attached to the outer side of the rear wall10E. The rear wall10E includes a plurality of first blow-out hole portions10E1and a plurality of first intake hole portions10E2. The plurality of first intake hole portions10E2are located at a substantially center portion of the rear wall10E. The plurality of first blow-out hole portions10E1are located on the rear wall10E at an outer portion of the plurality of first intake hole portions10E2in the rear wall10E.

The first air sending unit31includes a first air sending chamber310, a first heater311, a first centrifugal fan312, a first drive unit313, and a first energization unit314. The first heater311and the first centrifugal fan312are accommodated in the first air sending chamber310. The first drive unit313and the first energization unit314are located outside the first air sending chamber310.

The first energization unit314energizes the first heater311. The energized first heater311heats air in the first air sending chamber310. The first drive unit313drives the first centrifugal fan312. The driven first centrifugal fan312blows air in the first air sending chamber310into the accommodation space1A through the plurality of first blow-out hole portions10E1. Further, the driven first centrifugal fan312draws air in the accommodation space1A into the first air sending chamber310through the plurality of first intake hole portions10E2. The plurality of first intake hole portions10E2face the first centrifugal fan312in an axial direction of the first centrifugal fan312. The first heater311is, for example, a sheathed heater. The first drive unit313is, for example, a motor.

The second air sending unit32supplies second hot air H2into the accommodation space1A. In other words, the second air sending unit32executes the second hot air circulation heating mode. The second air sending unit32is attached to the outer side of the upper wall10C. The upper wall10C includes a plurality of second blow-out hole portions10C1and a plurality of second intake hole portions10C2. The plurality of second blow-out hole portions10C1and the plurality of second intake hole portions10C2are located at a substantially center portion of the upper wall10C.

The second air sending unit32includes a second air sending chamber320, a second heater321, a second centrifugal fan322, a second drive unit323, and a second energization unit324. The second heater321and the second centrifugal fan322are accommodated in the second air sending chamber320. The second drive unit323and the second energization unit324are located outside the second air sending chamber320.

The second energization unit324energizes the second heater321. The energized second heater321heats air in the second air sending chamber320. The second drive unit323drives the second centrifugal fan322. The driven second centrifugal fan322blows air in the second air sending chamber320into the accommodation space1A through the plurality of second blow-out hole portions10C1. Further, the driven second centrifugal fan322draws air in the accommodation space1A into the second air sending chamber320through the plurality of second intake hole portions10C2. The plurality of second intake hole portions10C2face the second centrifugal fan322in an axial direction of the second centrifugal fan322. The second heater321is, for example, a sheathed heater. The second drive unit323is, for example, a motor.

The microwave supply unit33supplies microwaves into the accommodation space1A. In other words, the microwave supply unit33executes the microwave heating mode. The microwave supply unit33is attached to the lower wall10D.

As illustrated inFIG.8, the microwave supply unit33includes a magnetron331, a rotary antenna332, a waveguide333, and an antenna motor334. The lower wall10D includes a recessed portion10D1. The recessed portion10D1is located at a substantially center portion of the lower wall10D. The heating cooking chamber10includes an oven tray330. The oven tray330is attached to the lower wall10D. The oven tray330is a plate-like member. The oven tray330covers the recessed portion10D1. The oven tray330and the recessed portion10D1form a space10D2therebetween.

The rotary antenna332is located in the space10D2. The magnetron331, the waveguide333, and the antenna motor334are located outside the recessed portion10D1. The magnetron331generates microwaves. The recessed portion10D1includes a power supply hole portion10D3. The waveguide333propagates the generated microwaves to the power supply hole portion10D3. As a result, the microwaves are supplied into the accommodation space1A via the rotary antenna332. The antenna motor334drives the rotary antenna332. The rotary antenna332agitates the microwaves and radiates the microwaves into the accommodation space1A.

The material of the oven tray330includes ceramic or glass. Because the material of the oven tray330includes ceramic or glass, the oven tray330facilitates transmission of the microwaves. Therefore, when the microwave heating mode is executed, the microwaves are supplied from the recessed portion10D1, and the heating cooking apparatus1can efficiently heat and cook an object to be heated.

The grill unit34mainly supplies heat radiation into the accommodation space1A. The grill unit34executes the grill heating mode. The grill unit34includes a heating cooking heater unit341and a third energization unit342. The heating cooking heater unit341is located at an upper portion in the accommodation space1A. The heating cooking heater unit341projects from the inner surface of the left wall10B of the heating cooking chamber10. The third energization unit342is located outside the left wall10B. The third energization unit342projects from the outer surface of the left wall10B of the heating cooking chamber10. The third energization unit342energizes the heating cooking heater unit341. The energized heating cooking heater unit341generates and radiates heat. The heating cooking heater unit341is, for example, a U-shaped sheathed heater.

As illustrated inFIG.7, in the present embodiment, the heating cooking heater unit341of the grill unit34is located at a substantially center portion in the front-rear direction. Accordingly, the heating cooking heater unit341of the grill unit34is easily to be located directly above the object to be heated. As a result, the heating cooking apparatus1can heat the object to be heated more uniformly when the grill unit34is driven.

As illustrated inFIG.8, the right wall10A includes a plurality of air supply hole portions10A1. The plurality of air supply hole portions10A1pass through the right wall10A. The left wall10B includes a plurality of exhaust hole portions10B1. The plurality of exhaust hole portions10B1pass through the left wall10B.

The damper unit35opens or closes the plurality of air supply hole portions10A1and the plurality of exhaust hole portions10B1. For example, when the damper unit35opens the plurality of air supply hole portions10A1and the plurality of exhaust hole portions10B1, the accommodation space1A communicates with the space R. When the damper unit35closes the plurality of air supply hole portions10A1and the plurality of exhaust hole portions10B1, the accommodation space1A does not communicate with the space R. The damper unit35includes an air supply damper35aand an exhaust damper35b.

The air supply damper35aopens or closes the plurality of air supply hole portions10A1. The air supply damper35ais attached to the outer side of the right wall10A.

The exhaust damper35bopens or closes the plurality of exhaust hole portions10B1. The exhaust damper35bis attached to the outer side of the left wall10B. As illustrated inFIG.4, the exhaust damper35bincludes a humidity sensor35b1. The humidity sensor35b1detects the amount of vapor included in the air discharged from the accommodation space1A (seeFIG.8) through the plurality of exhaust hole portions10B1when the plurality of exhaust hole portions10B1(seeFIG.8) are opened. Accordingly, when the microwave heating mode is executed, the heating cooking apparatus1can detect a finish of the object to be heated that has been heated and cooked based on the amount of vapor detected by the humidity sensor35b1. The exhaust damper35bguides the air discharged from the accommodation space1A (seeFIG.8) through the plurality of exhaust hole portions10B1(seeFIG.8) to the exhaust hole portion11BB (seeFIG.6) without bringing the air into contact with the air in the space R (seeFIG.8).

The temperature of the outer surface of the heating cooking chamber10tends to become high as the temperature in the accommodation space1A rises due to the drive of the first air sending unit31, the second air sending unit32, or the grill unit34. The pair of left and right connecting portions15, the pair of left and right slide rails16, and the pair of left and right slide members132are made of a metal. The heat from the outer surface of the heating cooking chamber10is easily to be heat-transferred to the pair of left and right connecting portions15, the pair of left and right slide rails16, and the pair of left and right slide members132. For this reason, the temperature of the pair of left and right connecting portions15, the pair of left and right slide rails16, and the pair of left and right slide members132become high as the temperature in the accommodation space1A rises.

Next, the configuration of the heating cooking apparatus1will be further described with reference toFIG.1toFIG.10.FIG.9is a perspective view of the heating cooking apparatus1according to the present embodiment. More specifically,FIG.9illustrates the heating cooking apparatus1in a state where the housing14is removed, in an upper right diagonal direction from behind.FIG.10is a perspective view of the heating cooking apparatus1according to the present embodiment. More specifically,FIG.10illustrates the heating cooking apparatus1in a state where the housing14is removed, in an upper left diagonal direction from behind.

As illustrated inFIG.9, the heating cooking apparatus1further includes a cooling fan40, a partition plate41, a plurality of air deflecting plates42, and a magnetron fan43. The cooling fan40, the partition plate41, the plurality of air deflecting plates42, and the magnetron fan43are located in the space R (seeFIG.7). The cooling fan40is an example of a fan.

The cooling fan40mainly cools components to be cooled that are disposed around the outer surface of the heating cooking chamber10(seeFIG.7). The components to be cooled include the pair of left and right slide members132, the pair of left and right slide rails16, the lid portion20, the first air sending unit31, the second air sending unit32, and the grill unit34. More specifically, the cooling fan40takes air outside of the heating cooking apparatus1into the space R (seeFIG.7) and discharges air in the space R (seeFIG.7) to the outside of the heating cooking apparatus1. As illustrated inFIG.9, the cooling fan40is located at a lower and rear portion of the space R (seeFIG.7). The cooling fan40is located at the same height as the height of the air intake hole portion11BA (seeFIG.6) of the panel11. The cooling fan40blows out air in an upward direction to generate a blown air flow BF. In the present embodiment, the cooling fan40is a cross-flow fan.

As illustrated inFIG.8, the partition plate41partitions the space R into an air intake space AR and an exhaust space BR. The air intake space AR is located below the partition plate41in the space R in the up-down direction. The exhaust space BR is located above the partition plate41in the space R in the up-down direction. In the air intake space AR, an intake air flow AF generated by the drive of the cooling fan40flows. The intake air flow AF indicates a flow of air that flows from the outside of the heating cooking apparatus1toward the cooling fan40through the plurality of air intake hole portions11BA (seeFIG.6). In the exhaust space BR, the blown air flow BF generated by the drive of the cooling fan40flows. As illustrated inFIG.9, the partition plate41includes two blow-out hole portions41b1. The blown air flow BF is blown upward from the cooling fan40through two blow-out hole portions41b1of the partition plate41. The blown air flow BF mainly indicates a flow of air toward the exhaust hole portion11C (seeFIG.6).

As illustrated inFIG.9andFIG.10, the partition plate41is located at a portion above the cooling fan40in the space R and a portion below the pair of left and right slide rails16. The partition plate41is attached to the outer surface of the heating cooking chamber10across a front end portion of the right wall10A of the heating cooking chamber10to a front end portion of the left wall10B of the heating cooking chamber10.

In the present embodiment, as illustrated inFIG.8, the magnetron331of the microwave supply unit33is located in the air intake space AR. The pair of left and right slide rails16, the first air sending unit31, the second air sending unit32, and the third energization unit342of the grill unit34are located in the exhaust space BR. Thus, the temperature of the air in the exhaust space BR tends to become higher than the temperature of the air in the air intake space AR due to the drive of the heating cooking apparatus1.

As illustrated inFIG.9, the plurality of air deflecting plates42branch the blown air flow BF that is blown out by the cooling fan40in an upward direction, guide the blown air flow BF to the components to be cooled, and split the blown air flow BF into an airflow sufficient to cool each of the components to be cooled. More specifically, the plurality of air deflecting plates42function as a duct that branches part of the blown air flow BF into five air flows. The plurality of air deflecting plates42are attached to an outer surface of the rear wall10E of the heating cooking chamber10. The plurality of air deflecting plates42include a first air deflecting plate42a,a second air deflecting plate42b,a third air deflecting plate42c,and a fourth air deflecting plate42d.

The first air deflecting plate42aguides part of the blown air flow BF blown out by the cooling fan40in the upward direction to the right slide rail16a.Further, the first air deflecting plate42asplits the blown air flow BF into an air flow sufficient to cool the right slide rail16a.Accordingly, the first air deflecting plate42afunctions as an air deflecting plate for the right slide rail.

The second air deflecting plate42bguides part of the blown air flow BF blown out by the cooling fan40in the upward direction to the air supply damper35a.Accordingly, the second air deflecting plate42bfunctions as an air deflecting plate for the air supply damper.

As illustrated inFIG.10, the third air deflecting plate42cguides part of the blown air flow BF blown out by the cooling fan40in the upward direction to the left slide rail16b.The third air deflecting plate42csplits the blown air flow BF into an air flow sufficient to cool the left slide rail16b.Accordingly, the third air deflecting plate42cfunctions as an air deflecting plate for the left slide rail.

The fourth air deflecting plate42dguides part of the blown air flow BF blown out by the cooling fan40in the upward direction to the third energization unit342of the grill unit34. The fourth air deflecting plate42dsplits the blown air flow BF into an air flow sufficient to cool the third energization unit342of the grill unit34. Accordingly, the fourth air deflecting plate42dfunctions as an air deflecting plate for the grill unit.

As illustrated inFIG.9, the magnetron fan43cools the magnetron331of the microwave supply unit33. More specifically, the magnetron fan43suctions air outside of the heating cooking apparatus1through the plurality of air intake hole portions11BA described with reference toFIG.6and blows the air onto the magnetron331. The operation characteristics of the magnetron331depend on the temperature of the magnetron331. Thus, the magnetron fan43inhibits fluctuations in the operation characteristics of the magnetron331. The magnetron fan43is located below the heating cooking chamber10and in front of the magnetron331. The magnetron fan43is, for example, a sirocco fan.

The configuration of the heating cooking apparatus1will be further described with reference toFIG.11.FIG.11is a block diagram illustrating the configuration of the heating cooking apparatus1according to the present embodiment.

As illustrated inFIG.11, the heating cooking apparatus1further includes a drive mechanism36, a control unit37, and a storage unit38.

The drive mechanism36includes a drive mechanism driving motor361and a rack pinion mechanism. The rack pinion mechanism includes a pinion. The control unit37controls the drive mechanism driving motor361to generate a driving force for rotating the pinion in a forward direction or a reverse direction. The pinion engages with the rack portion of the support member133described with reference toFIG.3andFIG.4. The drive mechanism36sets the pull-out body13to be in an open state or a closed state by rotating the pinion in a forward direction or a reverse direction.

The storage unit38is constituted by a Random Access Memory (RAM) and a Read Only Memory (ROM). The storage unit38stores control programs used for controlling the operation of each portion of the heating cooking apparatus1. The storage unit38stores setting information input by operating the operation panel unit12.

The control unit37is a hardware circuit. The hardware circuit includes a processor such as a Central Processing Unit (CPU). The control unit37executes control programs stored in the storage unit38to thereby control the operation panel unit12, the first drive unit313, the first energization unit314, the second drive unit323, the second energization unit324, the third energization unit342, the microwave supply unit33, the air supply damper35a,the exhaust damper35b,the cooling fan40, the magnetron fan43, the drive mechanism driving motor361, and the storage unit38.

The control unit37controls the drive of the cooling fan40and the magnetron fan43according to the type of heating cooking mode received by the operation panel unit12. When being operated by a user, the operation panel unit12receives a command to set any one of heating cooking mode among the microwave heating mode, the first hot air circulation heating mode, the second hot air circulation heating mode, and the grill heating mode. The control unit37sets the heating cooking mode according to the command received by the operation panel unit12. For example, when the control unit37sets the first hot air circulation heating mode, the second hot air circulation heating mode, or the grill heating mode as the heating cooking mode, the control unit37drives the cooling fan40. In this case, the control unit37does not drive the magnetron fan43. When the control unit37sets the microwave heating mode as the heating cooking mode, for example, the control unit37drives the cooling fan40and the magnetron fan43.

The control unit37controls the air supply damper35aand the exhaust damper35baccording to the type of heating cooking mode received by the operation panel unit12. More specifically, when the control unit37sets the first hot air circulation heating mode, the second hot air circulation heating mode, or the grill heating mode as the heating cooking mode, the control unit37causes the air supply damper35aand the exhaust damper35bto close the air supply hole portions10A1and the exhaust hole portions10B1, respectively. In this manner, when the first hot air circulation heating mode, the second hot air circulation heating mode, or the grill heating mode is executed, the accommodation space1A is closed. As a result, the temperature in the accommodation space1A is maintained.

When the control unit37sets the microwave heating mode as the heating cooking mode, the control unit37causes the air supply damper35aand the exhaust damper35bto open the air supply hole portions10A1and the exhaust hole portions10B1, respectively. In this manner, when the microwave heating mode is executed, the accommodation space1A is opened. As a result, the damper unit35can detect a finish of the object to be heated that has been heated and cooked.

More specifically, when the microwave heating mode is executed, water vapor emitted from the object to be heated in the accommodation space1A travels from the accommodation space1A into the exhaust damper35b.The humidity sensor35b1detects the amount of vapor in the exhaust damper35b.The amount of vapor in the exhaust damper35bdepends on the temperature of the object to be heated that has been heated and cooked. The control unit37determines whether the amount of vapor detected by the humidity sensor35b1is equal to or more than a predetermined value. The predetermined value indicates an amount of vapor that corresponds to a desired finishing temperature of the object to be heated. When the control unit37determines that the amount of vapor detected by the humidity sensor35b1is equal to or more than the predetermined value, the control unit37terminates the drive of the microwave supply unit33. When the control unit37determines that the amount of vapor detected by the humidity sensor35b1is not equal to or more than the predetermined value, the control unit37does not terminate the drive of the microwave supply unit33. The storage unit38stores the predetermined value. The air inside the exhaust damper35bis discharged to the outside of the heating cooking apparatus1through the exhaust hole portion11BB described with reference toFIG.6.

Next, the configuration of the see-through window portion21of the pull-out body13will be further described with reference toFIG.12.FIG.12is a cross-sectional view of the lid portion20of the pull-out body13along a section line XII inFIG.1.

As illustrated inFIG.12, in the present embodiment, the lid portion20includes the see-through window portion21described with reference toFIG.5, a frame portion22, and a cover member23. The frame portion22includes an opening portion22A. The opening portion22A is located at a substantially center portion of the frame portion22in the up-down direction and the left-right direction. The opening portion22A passes through the frame portion22in the front-rear direction. The see-through window portion21is attached to the opening portion22A of the frame portion22. In other words, the frame portion22supports the see-through window portion21. The see-through window portion21faces the accommodation space1A in a closed state of the pull-out body13. Details of a configuration of the frame portion22will be described below with reference toFIG.14. Details of a configuration of the cover member23will be described below with reference toFIG.14toFIG.16.

In the present embodiment, the see-through window portion21of the lid portion20includes three glass plates210and a punched metal plate214. The three glass plates210include a front glass plate211, a heat-ray reflecting glass212, and a rear glass plate213. The rear glass plate213is an example of a first glass plate. The front glass plate211is an example of a second glass plate.

The front glass plate211, the heat-ray reflecting glass212, the punched metal plate214, and the rear glass plate213are arranged, in this order, side by side in a line at intervals along a pull-out direction of the pull-out body13. In other words, among the three glass plates210, the rear glass plate213is located closest to the accommodation space1A. The front glass plate211is located opposite to the accommodation space1A. The heat-ray reflecting glass212is located between the rear glass plate213and the front glass plate211. In other words, the heat-ray reflecting glass212is located adjacent to the rear glass plate213.

Each of the front glass plate211, the heat-ray reflecting glass212, and the rear glass plate213has a rectangular shape. Each of the front glass plate211, the heat-ray reflecting glass212, and the rear glass plate213has a smaller area in this order. As illustrated inFIG.5, the lid portion20includes a front surface20B. The front surface20B includes a lower area20B1. In the present embodiment, the front glass plate211covers a portion excluding the lower area20B1of the front surface20B of the lid portion20. That is, the front glass plate211covers the most part of the front surface20B of the lid portion20. Accordingly, the temperature of the outer surface of the lid portion20depends on the temperature of the front glass plate211. The temperature of the outer surface of the lid portion20indicates the temperature of the front surface20B of the lid portion20.

In the present embodiment, each of the front glass plate211and the rear glass plate213includes a float heat-resistant tempered glass, a frosted plate heat-resistant tempered glass, a figured heat-resistant tempered glass, a low-reflection glass, a float plate glass, a polished plate glass, a figured plate glass, a wire mesh plate glass, a wire plate glass, a laminated glass, a tempered glass, an insulating glass, or a double-tempered glass. The thickness of each of the front glass plate211and the rear glass plate213is preferably 3 mm or more and 12 mm or less, and more preferably 3 mm from the perspective of costs and the like. Each of the front glass plate211and the rear glass plate213may be a commercial product.

Subsequently, the heat-ray reflecting glass212and the punched metal plate214will be further described with reference toFIG.12. The heat-ray reflecting glass212reflects heat rays (infrared rays). The heat rays include far-infrared rays. Specifically, the heat-ray reflecting glass212mainly reflects heat rays radiated from the first heater311(seeFIG.7) of the first air sending unit31, the second heater321(seeFIG.7) of the second air sending unit32, or the heating cooking heater unit341(seeFIG.8) of the grill unit34.

As illustrated inFIG.12, the heat-ray reflecting glass212includes a glass substrate212A and a heat-ray reflective film212B. The heat-ray reflective film212B is layered on the entire surface of one surface of the glass substrate212A. The heat-ray reflecting glass212is disposed such that the heat-ray reflective film212B is located proximate to the accommodation space1A in the lid portion20.

The glass substrate212A includes a float heat-resistant tempered glass, a frosted plate heat-resistant tempered glass, a figured heat-resistant tempered glass, a low-reflection glass, a float plate glass, a polished plate glass, a figured plate glass, a wire mesh plate glass, a wire plate glass, a laminated glass, a tempered glass, an insulating glass, or a double-tempered glass. The thickness of the glass substrate212A is, for example, 8 mm or more and 12 mm or less.

The heat-ray reflective film212B reflects heat rays. The heat-ray reflective film212B includes a metal oxide film, a metal film, an alloy film, or a layered film. The layered film indicates a layered body of a metal oxide film and a metal film. The material of the metal film includes, for example, silver (Ag). The material of the alloy layer includes, for example, silver (Ag), palladium (Pd), gold (Au), copper (Cu), or platinum (Pt). The material of a metal oxide film includes, for example, bismuth oxide (Bi2O3), tin oxide (SnO2), zinc oxide (ZnO), tantalum pentoxide (Ta2O5), niobium pentoxide (Nb2O5), tungsten trioxide (WO3), titanium dioxide (TiO2), aluminum oxide (Al2O3), zirconium dioxide (ZrO2), or indium oxide (In2O3). The thickness of the heat-ray reflective film212B is preferably 50 nm or more and 400 nm or less.

The heat-ray reflecting glass212may be a commercial product. The heat-ray reflecting glass212includes a heat-ray reflecting heat-resistant tempered glass.

The punched metal plate214reliably prevents microwaves radiated into the accommodation space1A due to the drive of the microwave supply unit33(seeFIG.8) from leaking to the outside of the heating cooking apparatus1through the see-through window portion21. Further, the punched metal plate214inhibits transmission of heat rays radiated from the first heater311(seeFIG.7) of the first air sending unit31, the second heater321(seeFIG.7) of the second air sending unit32, or the heating cooking heater unit341(seeFIG.8) of the grill unit34.

The punched metal plate214includes a plurality of punch holes. The plurality of punch holes block the transmission of microwaves radiated from the microwave supply unit33(seeFIG.8). The plurality of punch holes are formed such that a user can see the accommodation space1A of the heating cooking chamber10. Specifically, the plurality of punch holes of the punched metal plate214are formed in a mesh shape. The material of the punched metal plate214includes a metal.

In the present embodiment, the front glass plate211, the heat-ray reflecting glass212, the punched metal plate214, and the rear glass plate213are arranged, in this order, side by side in a line at intervals along a pull-out direction of the pull-out body13. Accordingly, the lid portion20includes a heat-ray blocking space CR and a heat insulation space DR. The heat-ray blocking space CR mainly blocks the transmission of heat rays and inhibits heat transfer. The heat-ray blocking space CR indicates an enclosed space formed by the rear surface of the heat-ray reflecting glass212, the front surface of the rear glass plate213, and the frame portion22. The heat insulation space DR mainly inhibits heat transfer. The heat insulation space DR indicates an enclosed space formed by the rear surface of the front glass plate211, the front surface of the heat-ray reflecting glass212, and the frame portion22. The heat-ray blocking space CR is located behind the heat insulation space DR.

The temperature of air in the accommodation space1A rises due to the drive of the first air sending unit31, the second air sending unit32, or the grill unit34. Further, the first air sending unit31, the second air sending unit32, or the grill unit34radiates heat rays into the accommodation space1A by the drive thereof. The rear glass plate213absorbs heat rays and generates heat. Accordingly, the rear glass plate213is easily to be set at high temperature due to heat transfer, convective heat transfer, or heat radiation.

In the present embodiment, the lid portion20includes a heat-ray blocking space CR. Air in the heat-ray blocking space CR functions as a heat insulating material. For this reason, heat of the rear glass plate213is hardly to be heat-transferred to the heat-ray reflecting glass212. Further, in the present embodiment, the heat-ray reflecting glass212includes the heat-ray reflective film212B. The heat-ray reflecting glass212is disposed such that the heat-ray reflective film212B is on the rear side. The heat-ray reflective film212B reflects heat rays. For this reason, heat rays hardly reach the glass substrate212A of the heat-ray reflecting glass212. That is, heat generated by the heat-ray reflecting glass212due to absorption of heat rays is inhibited. As a result, the temperature of the heat-ray reflecting glass212is lower than that in a case where a heat-resistant tempered glass is used instead of the heat-ray reflecting glass212.

In the present embodiment, the lid portion20includes a heat insulation space DR. Air in the heat insulation space DR functions as a heat insulating material. For this reason, heat of the heat-ray reflecting glass212is hardly to be heat-transferred to the front glass plate211. Further, in the present embodiment, the heat-ray reflecting glass212includes a heat-ray reflective film212B. For this reason, heat rays radiated into the accommodation space1A hardly reach the front glass plate211. That is, heat generated by the front glass plate211due to absorption of heat rays is inhibited. As a result, the temperature of the front glass plate211is lower than that in a case where a heat-resistant tempered glass is used instead of the heat-ray reflecting glass212. Accordingly, the heating cooking apparatus1can inhibit an increase in the temperature of the outer surface of the lid portion20.

Next, a configuration of the frame portion22will be further described with reference toFIG.1toFIG.13.FIG.13is a perspective view of the appearance of the heating cooking apparatus1according to the present embodiment. More specifically,FIG.13illustrates the appearance of the heating cooking apparatus1in a state where the pull-out body13is pulled out, as viewed in an upper right diagonal direction from behind. Further,FIG.13illustrates the heating cooking apparatus1in a state where the cover member23is not attached.

As illustrated inFIG.13, the frame portion22of the lid portion20includes a choke groove22B in addition to the opening portion22A described with reference toFIG.12. The choke groove22B is formed to surround the see-through window portion21. As illustrated inFIG.6, the panel11includes a front surface11G. The choke groove22B faces the front surface11G of the panel11in a closed state of the pull-out body13. That is, the choke groove22B is located outward from the opening11A of the panel11in the closed state of the pull-out body13. The material of each of the lid portion20and the panel11is a metal.

The choke groove22B prevents generation of gaps between the front surface11G of the panel11and the rear surface20A of the lid portion20in the closed state of the pull-out body13. As a result, the choke groove22B reliably prevents microwaves radiated into the accommodation space1A from leaking to the outside of the heating cooking apparatus1when the microwave supply unit33is driven.

Next, details of the configuration of the lid portion20will be described with reference toFIG.1toFIG.15.FIG.14is a perspective view of the appearance of the heating cooking apparatus1according to the present embodiment. More specifically,FIG.14illustrates the appearance of the heating cooking apparatus1in a state where the pull-out body13is pulled out, as viewed in an upper right diagonal direction from behind. InFIG.14, a dashed line indicates an area of the rear surface20A of the lid portion20that faces the opening11A (seeFIG.6) of the panel11in the closed state of the pull-out body13.FIG.15is a partial cross-sectional view of the lid portion20along a section line XV inFIG.14.

As illustrated inFIG.14, the lid portion20includes the cover member23in addition to the see-through window portion21and the frame portion22described with reference toFIG.12. The cover member23prevents foreign particles from being infiltrated into the choke groove22B of the lid portion20.

The cover member23is a rectangular frame-shaped object. The cover member23covers the entire choke groove22B of the lid portion20. Specifically, the cover member23is located outward from the opening11A of the panel11in the closed state of the pull- out body13. The material of the cover member23is a synthetic resin. The synthetic resin includes, for example, polypropyne.

As illustrated inFIG.14, the cover member23includes a pair of air supply hole portions23A. The pair of air supply hole portions23A guide part of the blown air flow BF to an air-cooled space ER to be described below with reference toFIG.15in the closed state of the pull-out body13. The pair of air supply hole portions23A include the right air supply hole portion23Aa and the left air supply hole portion23Ab. The right air supply hole portion23Aa is located at a right portion on the back surface of the cover member23. The right air supply hole portion23Aa faces the right fifth through hole portion11Fa of the panel11described with reference toFIG.6in the closed state of the pull-out body13. The left air supply hole portion23Ab is located at a left portion on the back surface of the cover member23. The left air supply hole portion23Ab faces the left fifth through hole portion11Fb of the panel11described with reference toFIG.6in the closed state of the pull-out body13. As illustrated inFIG.15, the pair of air supply hole portions23A pass through the cover member23. The pair of air supply hole portions23A are examples of first through hole portions.

As illustrated inFIG.15, the cover member23is located on an inner surface S22of the frame portion22. The inner surface S22of the frame portion22indicates the surface of the frame portion22proximate to the accommodation space1A. When the cover member23is attached to the frame portion22, the air-cooled space ER is formed between the cover member23and the inner surface S22of the frame portion22. The air-cooled space ER is formed to surround the see-through window portion21. The air-cooled space ER communicates with the pair of air supply hole portions23A of the cover member23. The air-cooled space ER is an example of a second space.

As illustrated inFIG.3andFIG.4, the frame portion22of the lid portion20includes a pair of exhaust hole portions22C. As illustrated inFIG.15, the air-cooled space ER communicates with the pair of exhaust hole portions22C of the frame portion22. As illustrated inFIG.3andFIG.4, the pair of exhaust hole portions22C guide air in the air-cooled space ER to the outside of the heating cooking apparatus1. The pair of exhaust hole portions22C include a right exhaust hole portion22Ca and a left exhaust hole portion22Cb. The lid portion20includes a right wall20C and a left wall20D. The right exhaust hole portion22Ca is located at an upper portion of the right wall20C of the lid portion20. The right exhaust hole portion22Ca passes through the right wall20C of the lid portion20. The left exhaust hole portion22Cb is located at an upper portion of the left wall20D of the lid portion20. The left exhaust hole portion22Cb passes through the left wall20D of the lid portion20. The pair of exhaust hole portions22C are examples of second through hole portions.

Next, a flow of air generated by the drive of the cooling fan40will be described with reference toFIG.15toFIG.19.FIG.16is a diagram illustrating a right side surface of the heating cooking apparatus1according to the present embodiment.FIG.17is a diagram illustrating a back surface of the heating cooking apparatus1according to the present embodiment.FIG.18is a diagram illustrating an upper surface of the heating cooking apparatus1according to the present embodiment.FIG.19is a diagram illustrating a left side surface of the heating cooking apparatus1according to the present embodiment. Note that the housing14is omitted inFIG.17toFIG.19.

As illustrated inFIG.16, when the cooling fan40is driven, an intake air flow AF is generated. The intake air flow AF flows through the air intake space AR described with reference toFIG.8. At this time, the intake air flow AF cools a power supply and the electrical components that are located in the air intake space AR.

When the cooling fan40is driven, the blown air flow BF is generated. The blown air flow BF described with reference toFIG.8flows through the exhaust space BR.

As illustrated inFIG.17, the blown air flow BF is mainly branched into a first blown air flow BF1to a fifth blown air flow BF5by the plurality of air deflecting plates42described with reference toFIG.9andFIG.10.

The first blown air flow BF1is formed by the first air deflecting plate42a.More specifically, the first blown air flow BFI is formed through a process in which part of the blown air flow BF blown out upward comes into contact with the first air deflecting plate42aand flows toward the right slide rail16a.

As illustrated inFIG.16, after flowing along the right slide rail16a,the first blown air flow BF1flows upward. At this time, the first blown air flow BF1cools the right slide member132a,the right slide rail16a,and the like.

In addition, part of the first blown air flow BF1flows into the right air supply hole portion23Aa (seeFIG.14) of the cover member23through the right fifth through hole portion11Fa of the panel11described with reference toFIG.6. Subsequently, as illustrated inFIG.15, the first blown air flow BF1flows through the air-cooled space ER. The temperature of the frame portion22tends to become high as the temperature in the accommodation space1A rises due to the drive of the first air sending unit31, the second air sending unit32, or the grill unit34. The first blown air flow BF1flows through the air-cooled space ER to cool the frame portion22. The first blown air flow BF1in the air- cooled space ER joins the second blown air flow BF2in the air-cooled space ER. The first blown air flow BF1and the second blown air flow BF2having a temperature risen through heat exchange due to cooling are discharged to the outside of the heating cooking apparatus1through the right exhaust hole portion22Ca of the lid portion20.

As illustrated inFIG.18, the first blown air flow BF1flows toward the exhaust hole portion11C described with reference toFIG.6along the upper wall10C of the heating cooking chamber10. At this time, the first blown air flow BF1joins the second blown air flow BF2to the fifth blown air flow BF5. Subsequently, the blown air flow BF having a temperature risen through heat exchange due to cooling is discharged to the outside of the heating cooking apparatus1through the exhaust hole portion11C of the panel11.

As illustrated inFIG.17, the second blown air flow BF2is formed by the second air deflecting plate42b.Specifically, the second blown air flow BF2is formed through a process in which part of the blown air flow BF blown out upward comes into contact with the second air deflecting plate42band flows toward the air supply damper35a.As illustrated inFIG.16, after flowing along the right wall10A of the heating cooking chamber10, the second blown air flow BF2flows upward. At this time, part of the second blown air flow BF2is supplied into the accommodation space1A when the air supply damper35aopens the air supply hole portion10A1of the heating cooking chamber10.

In addition, part of the second blown air flow BF2flows through the right air supply hole portion23Aa (seeFIG.14) of the cover member23through the right fifth through hole portion11Fa of the panel11described with reference toFIG.6. Subsequently, as illustrated inFIG.15, the second blown air flow BF2flows through the air-cooled space ER. The second blown air flow BF2flows through the air-cooled space ER to cool the frame portion22. In addition, the second blown air flow BF2in the air-cooled space ER joins the first blown air flow BFI in the air-cooled space ER. The first blown air flow BF1and the second blown air flow BF2having a temperature risen through heat exchange due to cooling are discharged to the outside of the heating cooking apparatus1through the right exhaust hole portion22Ca of the lid portion20.

As illustrated inFIG.18, the second blown air flow BF2flows toward the exhaust hole portion11C described with reference toFIG.6along the upper wall10C of the heating cooking chamber10. At this time, the second blown air flow BF2joins the first blown air flow BF1and the third blown air flow BF3to the fifth blown air flow BF5. Subsequently, the blown air flow BF having a temperature risen through heat exchange due to cooling is discharged to the outside of the heating cooking apparatus1through the exhaust hole portion11C of the panel11.

As illustrated inFIG.17, the third blown air flow BF3is formed by the third air deflecting plate42c.Specifically, the third blown air flow BF3is formed through a process in which the blown air flow BF blown out upward comes into contact with the third air deflecting plate42cand flows toward the left slide rail16b.

As illustrated inFIG.19, after flowing along the left slide rail16b,the third blown air flow BF3flows upward. At this time, the third blown air flow BF3cools the left slide member132b,the left slide rail16b,and the like.

In addition, part of the third blown air flow BF3flows through the left air supply hole portion23Ab (seeFIG.14) of the cover member23through the left fifth through hole portion11Fb of the panel11described with reference toFIG.6. Subsequently, the third blown air flow BF3flows through the air-cooled space ER, similarly to the first blown air flow BF1. The third blown air flow BF3flows through the air-cooled space ER to cool the frame portion22. In addition, the third blown air flow BF3in the air-cooled space ER joins the fourth blown air flow BF4in the air-cooled space ER. The third blown air flow BF3and the fourth blown air flow BF4having a temperature risen through heat exchange due to cooling are discharged to the outside of the heating cooking apparatus1through the left exhaust hole portion22Cb of the lid portion20as illustrated inFIG.19.

As illustrated inFIG.18, the third blown air flow BF3flows toward the exhaust hole portion11C described with reference toFIG.6along the upper wall10C of the heating cooking chamber10. At this time, the third blown air flow BF3joins the first blown air flow BF1, the second blown air flow BF2, the fourth blown air flow BF4, and the fifth blown air flow BF5. Subsequently, the blown air flow BF having a temperature risen through heat exchange due to cooling is discharged to the outside of the heating cooking apparatus1through the exhaust hole portion11C of the panel11.

As illustrated inFIG.17, the fourth blown air flow BF4is formed by the fourth air deflecting plate42d.Specifically, the fourth blown air flow BF4is formed through a process in which part of the blown air flow BF blown out upward comes into contact with the fourth air deflecting plate42dand flows toward the third energization unit342of the grill unit34.

As illustrated inFIG.19, after flowing along the left wall10B of the heating cooking chamber10, the fourth blown air flow BF4flows upward. At this time, the fourth blown air flow BF4cools the third energization unit342of the grill unit34, and the like.

In addition, part of the fourth blown air flow BF4flows through the left air supply hole portion23Ab (seeFIG.14) of the cover member23through the left fifth through hole portion11Fb of the panel11described with reference toFIG.6. Subsequently, the fourth blown air flow BF4flows through the air-cooled space ER, similarly to the second blown air flow BF2. The fourth blown air flow BF4flows through the air-cooled space ER to cool the frame portion22. In addition, the fourth blown air flow BF4in the air- cooled space ER joins the third blown air flow BF3in the air-cooled space ER. The third blown air flow BF3and the fourth blown air flow BF4having a temperature risen through heat exchange due to cooling are discharged to the outside of the heating cooking apparatus1through the left exhaust hole portion22Cb of the lid portion20as illustrated inFIG.19.

As illustrated inFIG.18, the fourth blown air flow BF4flows toward the exhaust hole portion11C described with reference toFIG.6along the upper wall10C of the heating cooking chamber10. At this time, the fourth blown air flow BF4joins the first blown air flow BF1to the third blown air flow BF3, and the fifth blown air flow BF5. Subsequently, the blown air flow BF having a temperature risen through heat exchange due to cooling is discharged to the outside of the heating cooking apparatus1through the exhaust hole portion11C of the panel11.

As illustrated inFIG.17, the fifth blown air flow BF5is formed by not coming into contact with the plurality of air deflecting plates42. The fifth blown air flow BF5flows upward along the outer surface of the rear wall10E of the heating cooking chamber10. Subsequently, as illustrated inFIG.18, the fifth blown air flow BF5flows toward the exhaust hole portion11C described with reference toFIG.6along the upper wall10C of the heating cooking chamber10. At this time, the fifth blown air flow BF5joins the first blown air flow BF1to the fourth blown air flow BF4. Subsequently, the blown air flow BF having a temperature risen through heat exchange due to cooling is discharged to the outside of the heating cooking apparatus1through the exhaust hole portion11C of the panel11.

Next, a cabinet2with the built-in heating cooking apparatus1will be described with reference toFIG.20.FIG.20is a diagram illustrating an external appearance of the cabinet2with the built-in heating cooking apparatus1according to the present embodiment.

The heating cooking apparatus1is disposed in the form of being built into the cabinet2. As illustrated inFIG.20, the cabinet2includes an accommodation space FR. The heating cooking apparatus1is disposed in the accommodation space FR. The accommodation space FR is a space having a rectangular parallelepiped shape. The cabinet2includes a right inner surface2A, a left inner surface2B, an upper inner surface2C, a lower inner surface2D, and a rear inner surface2E. The accommodation space FR is formed by the right inner surface2A, the left inner surface2B, the upper inner surface2C, the lower inner surface2D, and the rear inner surface2E.

As described with reference toFIG.1toFIG.20, in the present embodiment, the heating cooking apparatus1includes the heating cooking chamber10, the lid portion20, the first air sending unit31, the second air sending unit32, and the grill unit34. The lid portion20includes the see-through window portion21. The see-through window portion21includes three glass plates210. The three glass plates210include the heat-ray reflecting glass212, the rear glass plate213, and the front glass plate211. The heat-ray reflecting glass212is located between the rear glass plate213and the front glass plate211. The rear glass plate213, the heat-ray reflecting glass212, and the front glass plate211are arranged side by side in a line at intervals. Thereby, the see-through window portion21includes the heat-ray blocking space CR and the heat insulation space DR. Air in the heat-ray blocking space CR and air in the heat insulation space DR serve as a heat insulating material. Further, the heat-ray blocking space CR blocks the transmission of heat rays. Thus, heat rays are less likely to reach the front glass plate211than in a case where the heat-ray reflecting glass212is not provided. For this reason, the front glass plate211hardly generates heat due to the absorption of heat rays. That is, the temperature of the front glass plate211becomes lower than in a case where the heat-ray reflecting glass212is not provided. As a result, the heating cooking apparatus1can reduce the rise in the temperature of the outer surface of the lid portion20. In addition, even when some of particles constituting the heat-ray reflective film212B of the heat-ray reflecting glass212is peeled off, it is possible to reliably prevent the peeled-off particles from infiltrating into the accommodation space1A.

Further, in the present embodiment, the heating cooking apparatus1does not rotate an object to be heated when the microwave supply unit33is driven. For this reason, in order to uniformly heat the object to be heated in a grill heating mode, the heating cooking heater unit341is to be located in a substantially center portion in the front-rear direction, as described with reference toFIG.7. When the heating cooking heater unit341is located in a substantially center portion in the front-rear direction, the temperature of the outer surface of the lid portion20is more likely to become high than in a case where the heating cooking heater unit341is located at a rear portion in the front-rear direction. As a method for inhibiting the rise in the temperature of the outer surface of the lid portion20, it is conceivable to reduce the output of the heating cooking heater unit341. In the present embodiment, the rear glass plate213, the heat-ray reflecting glass212, and the front glass plate211are arranged side by side in a line at intervals. For this reason, the heating cooking apparatus1can reduce the rise in the temperature of the outer surface of the lid portion20even when the output of the heating cooking heater unit341is not reduced. For example, even when the temperature in the accommodation space1A is approximately 240 degrees, the heating cooking apparatus1can maintain the temperature of the outer surface of the lid portion20at approximately 80 degrees.

As described with reference toFIG.1toFIG.20, among the three glass plates210, the rear glass plate213is located closest to the accommodation space1A. The heat- ray reflecting glass212is located adjacent to the rear glass plate213. Thus, the heat-ray blocking space CR is located adjacent to the rear glass plate213. Thereby, the number of glass plates that generate heat due to the absorption of heat rays can be further reduced. For this reason, the temperature of the front glass plate211is, for example, lower than that in a case where the heat insulation space DR is located adjacent to the rear glass plate213. As a result, the heating cooking apparatus1can further reduce the rise in the temperature of the outer surface of the lid portion20.

As described with reference toFIG.1toFIG.20, the heat-ray reflecting glass212includes the glass substrate212A and the heat-ray reflective film212B. The heat-ray reflective film212B is formed on one side of the glass substrate212A. The heat-ray reflecting glass212is disposed such that the heat-ray reflective film212B is located proximate to the accommodation space1A. Thereby, heat rays are less likely to reach the glass substrate212A of the heat-ray reflecting glass212than in a case where the heat-ray reflecting glass212is disposed such that the heat-ray reflective film212B is located opposite to the accommodation space1A. For this reason, the glass substrate212A hardly generates heat due to absorption of heat. As a result, the heating cooking apparatus1can further reduce the rise in the temperature of the outer surface of the lid portion20.

As described with reference toFIG.1toFIG.20, the heating cooking apparatus1further includes the housing14and the cooling fan40. The lid portion20further includes the frame portion22and the cover member23. The cover member23is located outward from the opening11A in a state where the lid portion20closes the opening11A. The cover member23and the inner surface S22form the air-cooled space ER therebetween. The cover member23includes the pair of air supply hole portions23A. The frame portion22includes the pair of exhaust hole portions22C. Thereby, the heating cooking apparatus I can guide, to the air-cooled space ER, part of the blown air flow BF flowing through the outer surface of the heating cooking chamber10by the drive of the cooling fan40and discharge it to the outside of the heating cooking apparatus1. For this reason, the heating cooking apparatus1can cool the lid portion20having a temperature risen due to the drive of the first air sending unit31, the second air sending unit32, or the grill unit34. As a result, the heating cooking apparatus1can further reduce the rise in the temperature of the outer surface of the lid portion20.

As described with reference toFIG.1toFIG.20, the heating cooking apparatus1includes the grill unit34. Thereby, the heating cooking apparatus1can perform heating and cooking by using radiant heat.

As described with reference toFIG.1toFIG.20, the heating cooking apparatus1includes the first air sending unit31and the second air sending unit32. Thereby, the heating cooking apparatus1can perform heating and cooking by using hot air. Further, the heating cooking apparatus1can heat and cook an object to be heated by using hot air having different heating conditions.

As described with reference toFIG.1toFIG.20, the heating cooking apparatus1includes the microwave supply unit33. The heating cooking apparatus1can perform heating and cooking by using microwaves.

As described with reference toFIG.1toFIG.20, the heating cooking apparatus1includes the partition plate41. The temperature of air in the exhaust space BR is higher than the temperature of air in the air intake space AR due to the temperature of the outer surface of the heating cooking chamber10, or the like. The partition plate41can more reliably prevent air in the air intake space AR and air in the exhaust space BR from being mixed together. Owing to this configuration, the heating cooking apparatus1can more easily blow out low-temperature air into the exhaust space BR. As a result, the heating cooking apparatus1can efficiently cool the components to be cooled.

As described with reference toFIG.1toFIG.20, the panel11includes the opening11A. As illustrated inFIG.6, the air intake hole portion11BA and the exhaust hole portion11C are disposed to interpose the opening11A therebetween. Thereby, the high-temperature air discharged through the exhaust hole portion11C is less likely to be taken in through the air intake hole portion11BA. As a result, the heating cooking apparatus1can efficiently cool the components to be cooled.

As described with reference toFIG.1toFIG.20, the air intake hole portion11BA is disposed below the opening11A. The exhaust hole portion11C is disposed above the opening11A. The high-temperature air more easily rises than the low-temperature air. For this reason, the high-temperature air discharged through the exhaust hole portion11C is less likely to be taken in through the air intake hole portion11BA. As a result, the heating cooking apparatus1can more efficiently cool the components to be cooled. Further, the heating cooking apparatus1can efficiently inhibit the temperature rise of the components to be cooled even when there is no space for disposing the air intake hole portion11BA and the exhaust hole portion11C on the right and the left of the opening11A.

As described with reference toFIG.1toFIG.20, the cooling fan40is located at the same height as the air intake hole portion11BA. Thereby, the cooling fan40can more easily take in air through the air intake hole portion11BA as compared to a case where the cooling fan40is not disposed at the same height as the air intake hole portion11BA. As a result, the heating cooking apparatus1can more efficiently cool the components to be cooled.

As described with reference toFIG.1toFIG.20, the cooling fan40is located behind the heating cooking chamber10. Thereby, the cooling fan40can blow out air from the rear of the heating cooking chamber10. Thereby, the heating cooking apparatus1can more easily guide the blown air flow BF to each of the components to be cooled. As a result, the heating cooking apparatus1can more efficiently cool the components to be cooled.

As described with reference toFIG.1toFIG.20, the cooling fan40includes a cross-flow fan. The cross-flow fan can take in air over a wide range in the left-right direction (horizontal direction) compared to a centrifugal blower. Thus, the heating cooking apparatus I can efficiently take in air through the air intake hole portion11BA and can more efficiently cool the components to be cooled. The centrifugal blower includes a sirocco fan.

In the above, the embodiments of the present invention have been described with reference to the drawings (FIG.1toFIG.20). Note that the present invention is not limited to the embodiment described above and can be implemented in various modes within the scope not departing from the gist of the present invention (for example, (1) to (8) described below). The drawings primarily schematically illustrate each of the constituent elements for the sake of easier understanding, and the thickness, length, quantity, and the like of each of the illustrated constituent elements are different from the actual thickness, length, quantity, and the like by reason of creation of the drawings. Further, the material, shape, dimensions, and the like of each of the constituent elements illustrated in the embodiment described above are merely examples and are not particularly limited, and various modifications can be made within the scope not substantially departing from the effects of the present invention.

(1) As described with reference toFIG.1toFIG.20, in the present embodiment, the see-through window portion21of the lid portion20includes three glass plates210, but the present invention is not limited thereto. For example, the see-through window portion21may include four or more glass plates. Specifically, the see-through window portion21may include a configuration including one or more heat-resistant tempered glasses in at least one of a first gap or a second gap. The first gap indicates a gap between the front glass plate211and the heat-ray reflecting glass212. The second gap indicates a gap between the rear glass plate213and the heat-ray reflecting glass212. The heat-resistant tempered glass includes the heat-ray reflecting glass212, a float heat-resistant tempered glass, a laminated glass, or an insulating glass.

(2) As described with reference toFIG.1toFIG.20, in the present embodiment, the heat-ray reflecting glass212is located adjacent to the rear glass plate213, but the present invention is not limited thereto. For example, in a case where the see-through window portion21includes four or more glass plates, the heat-ray reflecting glass212may not be located adjacent to the rear glass plate213.

(3) As described with reference toFIG.1toFIG.20, in the present embodiment, the heat-ray reflecting glass212includes the glass substrate212A and the heat-ray reflective film212B formed on one side of the glass substrate212A, but the present invention is not limited thereto. The heat-ray reflecting glass212may include a configuration including the glass substrate212A and the heat-ray reflective film212B formed on both sides of the glass substrate212A.

(4) As described with reference toFIG.1toFIG.20, in the present embodiment, the lid portion20includes the cover member23, but the present invention is not limited thereto. The lid portion20may not include the cover member23.

(5) As described with reference toFIG.1toFIG.20, in the present embodiment, the heating cooking apparatus1includes the pull-out body13, but the present invention is not limited thereto. The heating cooking apparatus1may not include the pull-out body13. In this case, the heating cooking apparatus1may include a rotating door configured to open and close the opening11A. For example, the rotating door is rotatable relative to the heating cooking chamber10with a lower side of the rotating door as an axis.

(6) As described with reference toFIG.1toFIG.20, in the present embodiment, the heating cooking apparatus1includes the first air sending unit31, the second air sending unit32, and the grill unit34, but the present invention is not limited thereto. For example, the heating cooking apparatus1may include one or two of the first air sending unit31, the second air sending unit32, and the grill unit34.

(7) As described with reference toFIG.1toFIG.20, in the present embodiment, the heating cooking apparatus1includes the microwave supply unit33, but the present invention is not limited thereto. The heating cooking apparatus1may not include the microwave supply unit33.

(8) As described with reference toFIG.1toFIG.20, in the present embodiment, a cross-flow fan is used as the cooling fan40, but the present invention is not limited thereto. For example, as the cooling fan40, a centrifugal fan may be used, or a compressor may be used. In addition, in the present embodiment, as the cooling fan40, two cross-flow fans are used, but the present invention is not limited thereto. For example, as the cooling fan40, only one cross-flow fan may be used, or three or more cross-flow fans may be used.

INDUSTRIAL APPLICABILITY

The present invention is useful in the field of a heating cooking apparatus, for example.

REFERENCE SIGNS LIST