Microwave oven

Abstract

The present application suppresses the enlargement of a microwave oven. The microwave oven comprises: a housing; a cooking chamber provided in the inside of the housing; a component chamber provided in the inside of the housing and configured with a heating component; a door that opens and closes a first opening provided in the front of the housing and communicating with the cooking chamber; a battery mounting portion provided in the rear of the housing and allowing a battery pack to be attached and detached; and an exhaust port provided in the rear of the housing and allowing air discharged from the component chamber to flow therethrough.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a microwave oven. BACKGROUND

[0002] In the technical field of microwave ovens, a portable electromagnetic cooking device that operates by power supplied from a battery for power tools is known from Patent Literature 1.

[0003] Patent Literature 1: International Publication No. 2018 / 225626

[0004] A portable microwave oven is used at a work site or a shelter. In addition, a portable microwave oven is carried by a user. Therefore, miniaturization of a microwave oven is strongly desired. SUMMARY

[0005] The present disclosure aims to suppress the large size of a microwave oven.

[0006] According to the present disclosure, there is provided a microwave oven including a housing; a cooking chamber provided inside the housing; a component chamber provided inside the housing and configured with a heating component; a door that opens and closes a first opening provided at a front portion of the housing and communicating with the cooking chamber; a battery mounting portion provided at a rear portion of the housing and allowing a battery pack to be attached and detached; and an exhaust port provided at the rear portion of the housing and allowing air discharged from the component chamber to flow therethrough.

[0007] According to the present disclosure, the large size of a microwave oven is suppressed. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 is a perspective view of a microwave oven of an embodiment from the left front.

[0009] Figure 2 is a perspective view of a microwave oven of an embodiment from the right rear.

[0010] Figure 3 is a cross-sectional view of a microwave oven of an embodiment.

[0011] Figure 4 is a perspective view of a microwave oven of an embodiment from the left front, with the door open.

[0012] Figure 5 is a perspective view of a battery mounting portion and a battery pack of an embodiment from the left rear.

[0013] Figure 6 is a side view of a microwave oven of an embodiment in a state in which a battery pack is mounted.

[0014] Figure 7 is an exploded perspective view of a microwave oven of an embodiment from the left front.

[0015] Figure 8 is a perspective view of a microwave oven of the embodiment from the left front.

[0016] Figure 9 is a perspective cross-sectional view of a microwave oven of the embodiment.

[0017] Figure 10 is a perspective cross-sectional view of a microwave oven of the embodiment.

[0018] Figure 11 is a perspective view of a sheet metal member of the embodiment from the left front.

[0019] Figure 12 is a schematic view of a first battery pack and a second battery pack of the embodiment.

[0020] Figure 13 is a block diagram of a microwave oven of the embodiment.

[0021] Figure 14 is a perspective view of a microwave oven with a tilt angle sensor of the embodiment.

[0022] Figure 15 is a block diagram of a microwave oven with a tilt angle sensor of the embodiment.

[0023] Symbol explanation:

[0024] 1…microwave oven; 2…housing; 3…door; 4…battery mounting portion; 5…air inlet; 6…air outlet; 7…interface portion; 8…output terminal; 9…handle; 10…cooking chamber; 11…component chamber; 12…heating component; 13…opening (first opening); 14…hinge; 15…battery pack; 16…opening (second opening); 17…cover plate; 18…filter element; 19…mesh plate; 20…fan; 21…front surface; 22…rear surface; 23…left surface; 24…right surface; 25…upper surface; 26…lower surface; 27…recess; 28…first outer member; 29…second outer member; 30…sealing portion; 31…plate portion; 32…frame portion; 33…first bent portion; 34…second bent portion; 35…labyrinth seal; 36…latch; 37…opening; 41…first battery mounting portion; 42…second battery mounting portion; 43…guide rail; 44…terminal; 61…through hole; 71…power button; 72…output switching button; 73…stop button; 74…setting dial; 75…display; 81…terminal cover; 91…hinge; 92…arm portion; 93…grip portion; 100…metal plate member; 101…bottom plate portion; 102…front plate portion; 103…rear plate portion; 104…through hole; 105…vent; 106…vent; 107…vent; 108…vent; 109…partition member; 110…top plate; 111…light; 112…opening / closing sensor; 113…sound output device; 114…operation device; 115…temperature sensor; 116…inclination angle sensor; 121…controller; 122…magnetron; 151…first battery pack; 152…second battery pack; 153…upper surface; 171…through hole; 191…through hole; 200…through hole; 321…base frame portion; 322…cover frame portion; 1091…bottom plate portion; 1092…left plate portion; 1093…right plate portion. DETAILED DESCRIPTION

[0025] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings, but the present disclosure is not limited to the embodiments. Structural elements of the embodiments described below can be appropriately combined. In addition, there are cases where a part of the structural elements is not used.

[0026] In the embodiments, the terms of "front", "rear", "left", "right", "upper", and "lower" are used to describe positional relationships of the parts. These terms indicate relative positions or directions with the center of the microwave oven 1 as a reference.

[0027] [microwave oven]

[0028] Figure 1 is a perspective view of the microwave oven 1 of the embodiment, as viewed from the front left. Figure 2 is a perspective view of the microwave oven 1 of the embodiment, as viewed from the rear right. Figure 3is a cross-sectional view of the microwave oven 1 according to the embodiment.

[0029] The microwave oven 1 is a portable microwave oven. The user can use the microwave oven 1 at a work site such as a construction site. The user can use the microwave oven 1 at a shelter during a disaster. The user can carry the microwave oven 1.

[0030] As shown in Figures 1-3 , the microwave oven 1 includes a housing 2, a sheet metal member 100, a door 3, a battery mounting portion 4, an air inlet 5, an air outlet 6, an interface portion 7, an output terminal 8, and a handle 9.

[0031] The housing 2 is made of synthetic resin. The housing 2 has a surface. The surface of the housing includes a front surface 21, a rear surface 22, a left surface 23, a right surface 24, an upper surface 25, and a lower surface 26. The front surface 21 faces a front direction. The rear surface 22 faces a rear direction. The left surface 23 faces a left direction. The right surface 24 faces a right direction. The upper surface 25 faces an upper direction. The lower surface 26 faces a lower direction.

[0032] A cooking chamber 10 and a member chamber 11 are provided inside the housing 2. The member chamber 11 is disposed at a position lower than the cooking chamber 10. Food that is a heating target is disposed in the cooking chamber 10. A heating member 12 is disposed in the member chamber 11. The heating member 12 refers to a member that operates by supply of electric power and generates heat by the operation.

[0033] The sheet metal member 100 is disposed inside the housing 2. The cooking chamber 10 and the member chamber 11 are each formed by the sheet metal member 100. The sheet metal member 100 has a bottom plate portion 101, a front plate portion 102, and a rear plate portion 103.

[0034] The door 3 opens and closes an opening 13 provided to a front portion of the housing 2. The opening 13 is formed in the front plate portion 102. The opening 13 communicates with the cooking chamber 10. The user can put food into the cooking chamber 10 via the opening 13. The user can take out food from the cooking chamber 10 via the opening 13.

[0035] Figure 4 is a perspective view showing a state in which the door 3 of the microwave oven 1 according to the embodiment is opened, from a left front direction. As shown in Figure 4 , the door 3 is linked to the front plate portion 102 of the sheet metal member 100 via a hinge 14. The hinge 14 is disposed at a right end portion of the front plate portion 102. A right end portion of the door 3 is linked to the right end portion of the front plate portion 102 via the hinge 14. A rotation axis of the hinge 14 extends in an up-down direction. The door 3 is a so-called side opening type. Since the door 3 is the side opening type, the user can smoothly open the door 3 even in a state in which the microwave oven 1 is disposed in a narrow space.

[0036] The door 3 has a plate portion 31 and a frame portion 32 disposed around the plate portion 31.

[0037] The plate portion 31 is fixed to the frame portion 32. The plate portion 31 is formed of strengthened glass. A user can confirm the inside of the cooking chamber 10 through the plate portion 31 in a state where the door 3 is closed.

[0038] The right end portion of the frame portion 32 is connected to the front plate portion 102 via the hinge 14. A door latch 36 is provided at the left end portion of the frame portion 32. An opening 37 is provided at the left end portion of the front plate portion 102. The state where the door 3 is closed is maintained by hooking the door latch 36 to the opening 37.

[0039] The frame portion 32 has a base frame portion 321 and a cover frame portion 322 that covers the front portion of the base frame portion 321. At least a part of the base frame portion 321 is made of metal. The cover frame portion 322 is made of synthetic resin. In the embodiment, the cover frame portion 322 is made of acrylonitrile-butadiene-styrene copolymer resin (ABS resin). The front end portion of the cover frame portion 322 is disposed at a position that is further forward than the front surface of the plate portion 31. Since the front end portion of the cover frame portion 322 is disposed at a position that is further forward than the front surface of the plate portion 31, the plate portion 31 is protected by the cover frame portion 322. Even if the cover frame portion 322 collides with an object during the transport of the microwave oven 1, the object is prevented from colliding with the plate portion 31.

[0040] The battery mounting portion 4 is provided at the rear portion of the housing 2. In the embodiment, the battery mounting portion 4 includes a first battery mounting portion 41 that is disposed at the rear surface 22 of the housing 2 and a second battery mounting portion 42 that is disposed beside the first battery mounting portion 41 on the rear surface 22 of the housing 2. The first battery mounting portion 41 and the second battery mounting portion 42 are disposed apart from each other in the left-right direction. The first battery mounting portion 41 is disposed at a position that is further to the left than the second battery mounting portion 42.

[0041] The first battery mounting portion 41 has the same configuration as the second battery mounting portion 42. The size of the outer shape of the first battery mounting portion 41 is equal to the size of the outer shape of the second battery mounting portion 42. The first battery mounting portion 41 and the second battery mounting portion 42 each have a pair of guide rails 43 and a terminal 44 that is disposed between the pair of guide rails 43. The guide rails 43 extend in the up-down direction. The pair of guide rails 43 are disposed apart from each other in the left-right direction. A plurality of terminals 44 are provided.

[0042] In the left-right direction, the distance between the center of the rear surface 22 and the first battery mounting portion 41 and the distance between the center of the rear surface 22 and the second battery mounting portion 42 are equal. In the up-down direction, the position of the first battery mounting portion 41 and the position of the second battery mounting portion 42 are the same.

[0043] Figure 5is a perspective view showing the battery mounting portion 4 and the battery pack 15 of the embodiment from the left rear. The battery pack 15 is detachably mounted to the battery mounting portion 4. The battery pack 15 supplies electric power to an electronic device (load) mounted to the microwave oven 1. The electronic device includes the heat generating component 12. The battery pack 15 is a general-purpose battery that can be used as a power source of various electric appliances. The battery pack 15 can be used as a power source of a power tool. The battery pack 15 can be used as a power source of an electric appliance other than the power tool. The battery pack 15 includes a lithium-ion battery. The battery pack 15 is a rechargeable battery. The battery mounting portion 4 has the same configuration as a battery mounting portion of a power tool.

[0044] The battery pack 15 includes a first battery pack 151 mounted to the first battery mounting portion 41 and a second battery pack 152 mounted to the second battery mounting portion 42.

[0045] The outer shape of the first battery pack 151 is the same as the outer shape of the second battery pack 152. The size of the outer shape of the first battery pack 151 is equal to the size of the outer shape of the second battery pack 152. The weight of the first battery pack 151 is equal to the weight of the second battery pack 152. The capacity of the first battery pack 151 is the same as the capacity of the second battery pack 152. That is, the first battery pack 151 and the second battery pack 152 are the same kind of battery pack 15.

[0046] The first battery mounting portion 41 and the second battery mounting portion 42 are disposed at left-right symmetrical positions, the first battery pack 151 mounted to the first battery mounting portion 41 and the second battery pack 152 mounted to the second battery mounting portion 42 are the same kind of battery pack 15, and therefore the weight balance performance of the microwave oven 1 in the left-right direction is optimized in a state where the first battery pack 151 is mounted to the first battery mounting portion 41 and the second battery pack 152 is mounted to the second battery mounting portion 42. Therefore, in the state where the first battery pack 151 is mounted to the first battery mounting portion 41 and the second battery pack 152 is mounted to the second battery mounting portion 42, the user can easily carry the microwave oven 1.

[0047] The user can perform the work of mounting the battery pack 15 to the battery mounting portion 4 and the work of detaching the battery pack 15 from the battery mounting portion 4. The user can mount the battery pack 15 to the battery mounting portion 4 by inserting the battery pack 15 into the battery mounting portion 4 from above and moving the battery pack 15 downward. That is, the battery pack 15 is mounted to the battery mounting portion 4 by inserting the battery pack 15 into the battery mounting portion 4 from above.

[0048] The guide rail 43 of the battery mounting section 4 guides the battery pack 15 vertically. The battery pack 15 is inserted into the battery mounting section 4 while being guided by the guide rail 43. The battery pack 15 is mounted on the battery mounting section 4, thereby connecting its terminals to the terminals 44 of the battery mounting section 4. The terminals of the battery pack 15 include power terminals and signal terminals. The terminals 44 of the battery mounting section 4 also include power terminals and signal terminals. The power terminals of the battery pack 15 are connected to the power terminals of the battery mounting section 4, thereby supplying power from the battery pack 15 to the battery mounting section 4. The signal terminals of the battery pack 15 are connected to the signal terminals of the battery mounting section 4, thereby enabling the battery pack 15 and the battery mounting section 4 to receive or send control signals. The user can remove the battery pack 15 from the battery mounting section 4 by moving it upwards.

[0049] At the work site, the microwave oven 1 may be used with the oven set on the floor or ground. With the microwave oven 1 set on the floor or ground, the user can smoothly insert the battery pack 15 into the battery mounting section 4 from above.

[0050] Figure 6 This is a side view of the microwave oven 1 in the embodiment where the battery pack 15 is installed. Figure 6 As shown, with the battery pack 15 installed in the battery mounting section 4, the upper surface 25 of the outer casing 2 is positioned above the upper surface 153 of the battery pack 15. Compared to the upper surface 25 of the outer casing 2, the battery pack 15 does not protrude upwards, thus preventing the microwave oven 1 from becoming too large in the vertical direction. Furthermore, the user can place items on the upper surface 25 of the outer casing 2.

[0051] like Figure 1 , Figure 3 as well as Figure 4 As shown, the air inlet 5 is located at the front of the housing 2. The air inlet 5 communicates with the component chamber 11. Air drawn into the component chamber 11 flows through the air inlet 5. At the front of the housing 2, the air inlet 5 is located below the opening 13.

[0052] Figure 7 This is an exploded perspective view of the microwave oven 1 according to the embodiment, shown from the left front. An opening 16 is provided at the front of the outer casing 2. The opening 16 is formed at a position lower than the opening 13. The opening 16 is longer in the left-right direction. The opening 16 is actually trapezoidal. The opening 16 communicates with the component chamber 11.

[0053] A cover plate 17, a filter element 18, and a mesh plate 19 are disposed at the opening 16. The cover plate 17 and the mesh plate 19 are both made of metal. Examples of metals forming the cover plate 17 and the mesh plate 19 include iron or stainless steel. The filter element 18 is a porous component made of polyurethane resin or nylon resin.

[0054] The cover 17 can be installed and removed relative to the opening 16. The filter element 18 can be installed and removed relative to the opening 16. Both the cover 17 and the filter element 18 are replaceable. In addition, the screen 19 is also replaceable.

[0055] The cover plate 17 is positioned forward of the filter element 18. The filter element 18 is positioned forward of the mesh plate 19. The filter element 18 is sandwiched between the cover plate 17 and the mesh plate 19. The front surface of the filter element 18 faces the rear surface of the cover plate 17. The rear surface of the filter element 18 faces the front surface of the mesh plate 19.

[0056] The cover plate 17 has a through hole 171. The through hole 171 is formed to connect the front surface and the rear surface of the cover plate 17. A plurality of through holes 171 are provided at intervals in the left-right direction and the up-down direction.

[0057] The mesh panel 19 has through holes 191. The through holes 191 are formed to connect the front surface and the rear surface of the mesh panel 19. A plurality of through holes 191 are provided at intervals in the left-right direction and the up-down direction.

[0058] The air inlet 5 includes a through hole 171 disposed on the cover plate 17. The air inlet 5 also includes a through hole 191 disposed on the mesh plate 19. The filter element 18 is disposed on the inner side of the outer casing 2, closer to the through hole 171. The filter element 18 is configured to face the through hole 171 (air inlet 5) of the cover plate 17.

[0059] A fan 20 is disposed inside the component compartment 11. The fan 20 is configured to face the opening 16. The fan 20 is positioned rearward from the mesh panel 19. Two fans 20 are disposed. The two fans 20 are spaced apart in the left-right direction.

[0060] The air inlet 5 includes a through hole 171 provided in the cover plate 17. The air inlet 5 is small, thus preventing foreign objects from the outside of the housing 2 from entering the component chamber 11 through the air inlet 5.

[0061] like Figure 2 , Figure 3 as well as Figure 5 As shown, the exhaust port 6 is located at the rear of the housing 2. The exhaust port 6 communicates with the component chamber 11. Air discharged from the component chamber 11 flows through the exhaust port 6. The exhaust port 6 is located at the rear of the housing 2, below the battery mounting portion 4. In this embodiment, the exhaust port 6 includes a plurality of through holes 61 located at the rear of the housing 2. The through holes 61 are formed to connect the component chamber 11 to the outside of the housing 2. The plurality of through holes 61 are spaced apart in both the left-right and up-down directions.

[0062] The vent 6 includes a through hole 61 located at the rear of the housing 2. The vent 6 is small, thus preventing foreign objects from the outside of the housing 2 from entering the component chamber 11 through the vent 6.

[0063] When the fan 20 rotates, air from outside the housing 2 flows into the interior of the component chamber 11 through the through hole 171 of the cover plate 17, the filter element 18, and the through hole 191 of the mesh plate 19. The filter element 18 recovers foreign objects from the air drawn in from the through hole 171 (air inlet 5) of the cover plate 17.

[0064] Air in component chamber 11 flows out to the outside of housing 2 through exhaust port 6. A heating element 12 is disposed in component chamber 11. As air flows through component chamber 11, the heating element 12 is cooled by the air. This prevents excessive temperature rise of the heating element 12.

[0065] Even when using the microwave oven 1 at the work site or outdoors, the filter element 18 can prevent foreign objects from entering the component chamber 11. Furthermore, the cover 17 and the filter element 18 can be detached from the opening 16. Therefore, users can easily replace or clean the filter element 18 if it becomes dirty.

[0066] like Figure 6 As shown, even if an object is present behind the microwave oven 1, the distance between the exhaust port 6 and the object can be prevented from becoming too short by installing the battery pack 15 in the battery mounting section 4. This allows air in the component chamber 11 to be smoothly discharged from the exhaust port 6. Furthermore, the temperature of the air discharged from the exhaust port 6 is relatively high. Because the distance between the exhaust port 6 and the object is prevented from becoming too short, the temperature rise of the object is suppressed.

[0067] The battery mounting section 4 is located at the rear of the cooking chamber 10. The battery mounting section 4 is separate from the component chamber 11. Therefore, heat transfer from the heating element 12 located in the component chamber 11 to the battery pack 15 mounted in the battery mounting section 4 is suppressed. Since the heating element 12 is suppressed from heating the battery pack 15, the degradation of the battery pack 15 is suppressed.

[0068] The battery mounting section 4 is positioned above the exhaust port 6. That is, the battery mounting section 4 is located on the upper part of the rear surface 22. As a result, the user can smoothly install and remove the battery pack 15 from the battery mounting section 4 while the microwave oven 1 is placed on the floor or ground.

[0069] The interface unit 7 has a user interface function for data interaction between the user and the microwave oven 1. The interface unit 7 is located on the front of the housing 2, above the opening 13. The interface unit includes a power button 71, an output switching button 72, a stop button 73, a setting dial 74, and a display 75.

[0070] The microwave oven 1 is started by pressing the power button 71. The output of the microwave oven 1 is switched between, for example, 500 [W] and 350 [W] by pressing the output switching button 72. The operation of the microwave oven 1 is stopped by pressing the stop button 73. The heating time of a food item placed in the cooking chamber 10 is set by rotating the setting dial 74. The setting dial 74 also functions as a start button. The heating of a food item placed in the cooking chamber 10 is started by pressing the setting dial 74.

[0071] The display 75 displays the output set by the output switching button 72, the heating time set by the setting dial 74, the remaining heating time, the battery level, and the like. As the display 75, a liquid crystal display (LCD) or an organic EL display (OELD) is exemplified.

[0072] In the front portion of the housing 2, the interface portion 7 is provided at a position higher than the opening 13. Therefore, the user can smoothly perform the operations of the power button 71, the output switching button 72, the stop button 73, the setting dial 74, and the recognition of the display 75 in a state where the microwave oven 1 is placed on a floor surface or a ground surface.

[0073] In the front portion of the housing 2, the output terminal 8 is provided below the hinge 14. The output terminal 8 includes a universal serial bus (USB) terminal. The output terminal 8 is covered with a terminal cover 81. The terminal cover 81 is made of rubber. The output terminal 8 is protected by the terminal cover 81. The upper end portion of the terminal cover 81 is connected to the housing 2. The output terminal 8 outputs electric power from the battery pack 15.

[0074] The user can connect an electronic device such as a mobile terminal to the output terminal 8. In the case where the electronic device is connected to the output terminal 8, the user lifts the terminal cover 81 so as to expose the output terminal 8. The user connects the electronic device to the output terminal 8, whereby a secondary battery possessed by the electronic device can be charged.

[0075] The output terminal 8 is provided in the front portion of the housing 2. Therefore, the user can smoothly connect the electronic device to the output terminal 8. The output terminal 8 is provided below the hinge 14 in the front portion of the housing 2. Therefore, even if the user accidentally drops a food item when placing the food item in the cooking chamber 10 through the opening 13 or taking the food item out of the cooking chamber 10, the dropped food item is inhibited from being hooked to the output terminal 8.

[0076] Figure 8is a perspective view of the microwave oven 1 of the embodiment as viewed from the left front. The handle 9 is connected to the upper portion of the housing 2 via a hinge 91. The rotation axis of the hinge 91 extends in the left-right direction. The handle 9 includes two arm portions 92 connected to the housing 2 via the hinge 91 and a grip portion 93 connecting the two arm portions 92.

[0077] As shown in Figure 8 , the handle 9 is rotatable in a manner that the grip portion 93 is away from the housing 2. By rotating the handle 9 in a manner that the grip portion 93 is away from the housing 2, the user can carry the microwave oven 1 by hand gripping the grip portion 93.

[0078] In the front-rear direction, the handle 9 is connected to the central portion of the housing 2. In addition, the rotation axis of the hinge 91 extends in the left-right direction. Therefore, the user can smoothly carry the microwave oven 1 by hand gripping the handle 9 in a state that the battery pack 15 is attached to the battery attachment portion 4. That is, in a state that the battery pack 15 is attached to the battery attachment portion 4, there is a possibility that the weight balance performance of the microwave oven 1 in the front-rear direction deteriorates. The rotation axis of the hinge 91 of the handle 9 extends in the left-right direction, so even if the weight balance performance of the microwave oven 1 in the front-rear direction deteriorates, the user can smoothly carry the microwave oven 1 by hand gripping the handle 9.

[0079] A recess 27 is provided in the upper portion of the housing 2. As shown in Figure 1 , the handle 9 is rotatable in a manner that the arm portions 92 and the grip portion 93 are housed in the recess 27. In a state that the handle 9 is housed in the recess 27, the handle 9 is disposed at a position lower than the upper surface 25 of the housing 2. The handle 9 does not protrude upward compared to the upper surface 25 of the housing 2, so the enlargement of the microwave oven 1 in the up-down direction is suppressed. In addition, the user can place an article on the upper surface 25 of the housing 2.

[0080] The handle 9 is disposed in the upper portion of the housing 2. The heat generating member 12 is disposed in the lower portion of the housing 2. Therefore, the heat of the heat generating member 12 is suppressed from being transmitted to the handle 9. That is, the heating of the handle 9 is suppressed.

[0081] Figure 9 and Figure 10 are perspective cross-sectional views of the microwave oven 1 of the embodiment, respectively. Figure 9 corresponds to the A-A line cross-sectional view of Figure 4 , Figure 10 corresponds to the B-B line cross-sectional view of Figure 4 .

[0082] The housing 2 includes a plurality of exterior members. The housing 2 includes at least a first exterior member 28 and a second exterior member 29. In Figure 9 and Figure 10In the illustrated example, the first outer member 28 is disposed at a position further forward than the second outer member 29. The first outer member 28 is adjacent to the second outer member 29. The first outer member 28 includes a front portion of the upper surface 25 of the housing 2. The first outer member 28 includes a rear portion of the upper surface 25 of the housing 2.

[0083] The housing 2 has a seal portion 30 provided at a boundary between the first outer member 28 and the second outer member 29. The seal portion 30 includes a labyrinth seal 35 including a first zigzag portion 33 provided at a rear end portion of the first outer member 28 and a second zigzag portion 34 provided at a front end portion of the second outer member 29.

[0084] Intrusion of foreign matter from the outside of the housing 2 into the inside of the housing 2 is suppressed by the seal portion 30. The foreign matter includes liquid (water). The inside of the housing 2 is waterproofed by the seal portion 30. Even if the microwave oven 1 is used at a work site or outdoors, intrusion of foreign matter into the inside of the housing 2 is suppressed by the seal portion 30.

[0085] The microwave oven 1 is provided with a metal plate member 100 disposed inside the housing 2. The metal plate member 100 is made of iron. Alternatively, the metal plate member 100 can be made of stainless steel. The metal plate member 100 forms the cooking chamber 10 and the member chamber 11, respectively. The heat generating member 12 is supported by the metal plate member 100.

[0086] Figure 11 is a perspective view of the metal plate member 100 of the embodiment as viewed from the front left. As shown in Figures 9-11 The metal plate member 100 includes a bottom plate portion 101, a front plate portion 102 connected to a front portion of the bottom plate portion 101, and a rear plate portion 103 connected to a rear portion of the bottom plate portion 101. A front end portion of the bottom plate portion 101 and a lower end portion of the front plate portion 102 are fixed. A rear end portion of the bottom plate portion 101 and a lower end portion of the rear plate portion 103 are fixed.

[0087] The front plate portion 102 and the rear plate portion 103 are joined via the bottom plate portion 101. Thereby, reduction in strength of the metal plate member 100 is suppressed. Since reduction in strength of the metal plate member 100 is suppressed, reduction in strength of the microwave oven 1 is suppressed. If the microwave oven 1 is carried, there is a possibility that vibration or impact force acts on the microwave oven 1. Since reduction in strength of the microwave oven 1 is suppressed, deterioration of the microwave oven 1 is suppressed.

[0088] The heat generating member 12 is supported by the bottom plate portion 101 of the metal plate member 100. The heat generating member 12 includes at least a controller 121 and a magnetron 122. The controller 121 is disposed at a position further to the right than the magnetron 122.

[0089] Heat from the heating element 12 is transferred to the base plate 101. Heat from the heating element 12 diffuses from the base plate 101. Furthermore, the base plate 101 suppresses heat transfer from the heating element 12 to the bottom of the outer casing 2. When the microwave oven 1 is positioned on a designated surface, the base plate 101 suppresses heat transfer from the heating element 12 to the surface. The base plate 101 functions as a heat dissipation component that diffuses heat from the heating element 12. The base plate 101 also functions as a heat insulation component that suppresses heat transfer from the heating element 12 to the surface.

[0090] The base plate 101 has multiple through holes 104. Even if foreign objects are present in the component chamber 11, they are discharged from the component chamber 11 through the through holes 104. The bottom of the outer casing 2 is disposed below the base plate 101. A through hole 200 is also formed on the bottom of the outer casing 2. Foreign objects discharged from the component chamber 11 through the through holes 104 are discharged to the outside of the outer casing 2 through the through hole 200 on the bottom of the outer casing 2. The foreign objects include liquids (water). The through holes 104 and 200 can function as so-called drainage holes.

[0091] The front panel 102 has an opening 13, a vent 105, a vent 106, and a vent 107.

[0092] The opening 13 is located on the upper part of the front panel 102.

[0093] Vent 105 is located at the lower left of the front panel 102. Vent 106 is located at the lower right of the front panel 102. Figure 7 As shown, fans 20 are respectively arranged at vent 105 and vent 106. Vent 105 and vent 106 are respectively arranged to face the air inlet 5. At least a portion of the air drawn into the interior of the component chamber 11 flows through the air inlet 5, then through the vent 105 and vent 106, and flows into the component chamber 11.

[0094] In the left-right direction, a vent 107 is disposed between vents 105 and vent 106. Multiple vents 107 are provided. Vent 107 is smaller than vents 105 and vent 106. Vent 107 is configured to face the air inlet 5. At least a portion of the air drawn into the component chamber 11 flows through the vent 107 after passing through the air inlet 5 and into the component chamber 11.

[0095] The rear panel 103 has a vent 108. A plurality of vents 108 are provided. The vents 108 are configured to face the exhaust port 6. At least a portion of the air discharged from the component chamber 11 flows through the vents 108, then through the exhaust port 6, and exits from the component chamber 11.

[0096] A partition member 109 is arranged between the upper portion of the front plate portion 102 and the upper portion of the rear plate portion 103. The partition member 109 has a bottom plate portion 1091, a left plate portion 1092, and a right plate portion 1093. The front plate portion 102 is connected to the front end portion of the partition member 109. The rear plate portion 103 is connected to the rear end portion of the partition member 109. The top plate 110 is connected to the upper end portion of the partition member 109. The cooking chamber 10 is formed by the partition member 109, the upper portion of the front plate portion 102, the upper portion of the rear plate portion 103, and the top plate 110. The component chamber 11 is formed below the bottom plate portion 1091. The bottom plate portion 1091 divides the cooking chamber 10 and the component chamber 11. The component chamber 11 is formed by the bottom plate portion 101, the lower portion of the front plate portion 102, the lower portion of the rear plate portion 103, and the bottom plate portion 1091 of the partition member 109.

[0097] The controller 121 has a processor such as a CPU (Central Processing Unit), a memory such as a ROM (Read Only Memory) or a RAM (Random Access Memory). The controller 121 includes a power supply circuit that supplies power to the electronic devices mounted on the microwave oven 1. The controller 121 controls the electronic devices mounted on the microwave oven 1 on the basis of the operation signal output from the interface portion 7.

[0098] The magnetron 122 generates electromagnetic waves by power supplied from the battery pack 15. The electromagnetic waves output from the magnetron 122 heat the food in the cooking chamber 10.

[0099] Figure 12 is a schematic view that shows the first battery pack 151 and the second battery pack 152 of the embodiment. The battery pack 15 supplies power to the electronic devices (loads) mounted on the microwave oven 1. The electronic devices include at least the controller 121 and the magnetron 122.

[0100] As shown in Figure 12 , the first battery pack 151 mounted on the first battery mounting portion 41 is connected in parallel with the second battery pack 152 mounted on the second battery mounting portion 42.

[0101] The first battery pack 151 and the second battery pack 152 are connected in parallel, and thus the workable time of the microwave oven 1 is prevented from becoming short. In addition, even in a state where the battery pack 15 is mounted on one of the first battery mounting portion 41 and the second battery mounting portion 42 and the battery pack 15 is not mounted on the other of the first battery mounting portion 41 and the second battery mounting portion 42, the microwave oven 1 can work.

[0102] [Operation]

[0103] Figure 13 is a block diagram that shows the microwave oven 1 of the embodiment. Refer toFigure 13 The operation of microwave oven 1 will be explained.

[0104] like Figure 13 As shown, the microwave oven 1 includes a controller 121, a magnetron 122, an interface 7, a light 111 that illuminates the interior of the cooking chamber 10, an opening / closing sensor 112 that detects the opening / closing state of the door 3, a sound output device 113, an operating device 114 for operating the sound output device 113, and a temperature sensor 115 that detects the temperature of the component chamber 11.

[0105] With the battery pack 15 installed in the battery mounting section 4, the microwave oven 1 is started by pressing the power button 71 on the interface section 7. The user opens the door 3 and places food into the cooking chamber 10. The opening / closing sensor 112 sends a detection signal indicating that the door 3 is open to the controller 121. The controller 121 illuminates the light 111 based on the detection signal from the opening / closing sensor 112. After placing food into the cooking chamber 10, the user closes the door 3. The opening / closing sensor 112 sends a detection signal indicating that the door 3 is closed to the controller 121. The controller 121 extinguishes the light 111 based on the detection signal from the opening / closing sensor 112. In other words, if the door 3 is open, the light 111 is on, illuminating the cooking chamber 10. If the door 3 is closed, the light 111 is off.

[0106] The user rotates the setting dial 74 to set the heating time for the food. The controller 121 displays the set heating time on the display 75. The user rotates the setting dial 74 while checking the heating time displayed on the display 75. After setting the heating time, the user presses the setting dial 74. By pressing the setting dial 74, the controller 121 activates the magnetron 122. The magnetron 122 activates, and electromagnetic waves are output from the magnetron 122, thus initiating the heating of the food. Once the heating of the food has started, the controller 121 illuminates the lamp 111.

[0107] The controller 121 stops the magnetron 122 from operating after the set heating time has elapsed. With the magnetron 122 no longer operating, the heating of the food is complete. Additionally, the controller 121 turns off the lamp 111 after the set heating time has elapsed. Furthermore, the controller 121 outputs a sound from the sound output device 113 after the set heating time has elapsed. By outputting a sound from the sound output device 113, the user can confirm that the heating of the food has ended. The user can then open the door 3 and remove the heated food from the cooking chamber 10.

[0108] The controller 121 outputs a sound from the sound output device 113 in a case where it is determined based on the detection signal of the opening / closing sensor 112 that the state where the door 3 is not opened even after the heating of the food is finished has continued for a predetermined prescribed time. By outputting a sound from the sound output device 113, the user can recognize the case where the food is forgotten to be taken out from the cooking chamber 10.

[0109] The user can operate the operation device 114 to adjust the volume of the sound output from the sound output device 113. In a case where the noise at the place where the microwave oven 1 is installed is large, the user can operate the operation device 114 to increase the volume of the sound output from the sound output device 113. The volume of the sound output from the sound output device 113 is increased, so that the user can recognize the case where the heating of the food is finished or the food is forgotten to be taken out from the cooking chamber 10 even if the noise is large. In a case where the noise at the place where the microwave oven 1 is installed is small, the user can operate the operation device 114 to decrease the volume of the sound output from the sound output device 113.

[0110] The controller 121 can stop the operation of the magnetron 122 based on the detection signal of the temperature sensor 115. If, for example, a large amount of foreign matter is attached to the filter 18, the air outside the housing 2 becomes difficult to flow into the component chamber 11, so there is a possibility that the temperature of the component chamber 11 excessively rises. The controller 121 stops the operation of the magnetron 122 in a case where it is determined based on the detection signal of the temperature sensor 115 that the temperature of the component chamber 11 has exceeded a predetermined temperature threshold.

[0111] [Effects]

[0112] As described above, according to the embodiment, the battery mounting portion 4 is provided at the rear portion of the housing 2. Thus, the microwave oven 1 is suppressed from being large-sized. The battery mounting portion 4 is disposed at the rear portion of the housing 2, so that at least the microwave oven 1 is suppressed from being large-sized in the left-right direction. In a state where the battery pack 15 is not mounted to the battery mounting portion 4, the microwave oven 1 can be accommodated in a narrow space.

[0113] Further, the battery mounting portion 4 and the exhaust port 6 are provided at the rear portion of the housing 2, respectively, so that as described above, in a state where the battery pack 15 is mounted to the battery mounting portion 4, the distance between the exhaust port 6 and the object behind the microwave oven 1 is suppressed from being short. Thus, the air of the component chamber 11 is smoothly exhausted from the exhaust port 6. Further, the temperature of the air exhausted from the exhaust port 6 is high. Since the distance between the exhaust port 6 and the object is suppressed from being short, the temperature rise of the object is suppressed. Figure 6

[0114] ​The exhaust port 6 is provided at the rear of the housing 2 at a position lower than the battery mounting portion 4. That is, the battery mounting portion 4 is disposed at the rear of the cooking chamber 10 at a position higher than the exhaust port 6. The battery mounting portion 4 is separated from the component chamber 11, and thus heat transfer from the heat generating component 12 disposed in the component chamber 11 to the battery pack 15 mounted to the battery mounting portion 4 is suppressed. The battery pack 15 is not heated by the heat generating component 12, and thus deterioration of the battery pack 15 is suppressed.

[0115] In addition, the battery mounting portion 4 is disposed at the upper portion of the rear surface 22. Thereby, the user can smoothly perform the attachment and detachment of the battery pack 15 with respect to the battery mounting portion 4 in a state in which the microwave oven 1 is disposed on a floor surface or ground.

[0116] The intake port 5 is provided at the front of the housing 2. Thereby, air outside the housing 2 flows into the component chamber 11 via the intake port 5. The heat generating component 12 is disposed in the component chamber 11. The air flows through the component chamber 11, and thereby the heat generating component 12 is cooled by the air. Thereby, excessive temperature rise of the heat generating component 12 is suppressed. The exhaust port 6 is provided at the rear of the housing 2. Thereby, in the component chamber 11, the air can smoothly flow from the front of the housing 2 toward the rear.

[0117] The intake port 5 is provided at the front of the housing 2 at a position lower than the opening 13. Thereby, the position of the intake port 5 and the position of the exhaust port 6 are almost aligned in the vertical direction. Therefore, the air that flows into the component chamber 11 via the intake port 5 is smoothly exhausted from the exhaust port 6 after flowing through the component chamber 11 from the front of the housing 2 toward the rear.

[0118] The cover plate 17 is provided at the opening 16 communicating with the component chamber 11. The through-hole 171 that functions as the intake port 5 is provided at the cover plate 17. The intake port 5 is small in size, and thus intrusion of foreign matter outside the housing 2 into the component chamber 11 via the intake port 5 is suppressed. In addition, the cover plate 17 can be attached and detached with respect to the opening 16. Therefore, the cover plate 17 can be easily replaced.

[0119] The filter 18 that recovers foreign matter from the air drawn from the intake port 5 (the through-hole 171) is provided. Even when the microwave oven 1 is used at a work site or outdoors, intrusion of foreign matter into the component chamber 11 is suppressed by the filter 18. In addition, the cover plate 17 and the filter 18 can be attached and detached with respect to the opening 16. Therefore, the user can simply replace or clean the filter 18 in the case in which the filter 18 is contaminated.

[0120] The filter 18 is disposed so as to face the intake port 5 (the through-hole 171). Therefore, the filter 18 can efficiently recover foreign matter from the air drawn from the intake port 5 (the through-hole 171).

[0121] The component chamber 11 is disposed at a position lower than the cooking chamber 10. Thereby, the upper portion of the microwave oven 1 is suppressed from being heated.

[0122] A metal plate member 100 is arranged on the inner side of the housing 2. The heat generating member 12 is supported by the metal plate member 100. The strength of the microwave oven 1 is suppressed by the metal plate member 100. If the microwave oven 1 is carried, there is a possibility that the microwave oven 1 is subjected to a vibration or an impact force. Since the strength of the microwave oven 1 is suppressed, the degradation of the microwave oven 1 is suppressed. In addition, the metal plate member 100 has a bottom plate portion 101, a front plate portion 102, and a rear plate portion 103. The front plate portion 102 and the rear plate portion 103 are joined via the bottom plate portion 101. By providing the bottom plate portion 101, the strength of the metal plate member 100 is effectively suppressed.

[0123] The heat generating member 12 is supported by the bottom plate portion 101. Thereby, the heat of the heat generating member 12 is transferred to the bottom plate portion 101. The heat of the heat generating member 12 is diffused from the bottom plate portion 101. In addition, the heat of the heat generating member 12 is suppressed from being transferred to the bottom of the housing 2 by the bottom plate portion 101. In a case where the microwave oven 1 is arranged on a prescribed arrangement surface, the heat of the heat generating member 12 is suppressed from being transferred to the arrangement surface by the bottom plate portion 101. The bottom plate portion 101 functions as a heat radiating member that diffuses the heat of the heat generating member 12. The bottom plate portion 101 functions as a heat insulating member that suppresses the heat of the heat generating member 12 from being transferred to the arrangement surface.

[0124] The vent 105, the vent 106, and the vent 107 are provided in the front plate portion 102. The vent 108 is provided in the rear plate portion 103. Thereby, at least a part of the air that is sucked into the inside of the member chamber 11 can flow into the member chamber 11 after flowing through the intake port 5, and flow through the vent 105, the vent 106, and the vent 107. At least a part of the air that is discharged from the member chamber 11 can flow out from the member chamber 11 after flowing through the vent 108, and flow through the exhaust port 6.

[0125] The door 3 is joined to the metal plate member 100 via the hinge 14. The rotation axis of the hinge 14 extends in the up-and-down direction. The door 3 is a so-called side opening type. Since the door 3 is a side opening type, even in a state where the microwave oven 1 is arranged in a narrow space, the user can smoothly open the door 3.

[0126] The output terminal 8 is provided in the front portion of the housing 2. Therefore, the user can smoothly connect an electronic device such as a mobile terminal to the output terminal 8. The output terminal 8 is provided below the hinge 14 in the front portion of the housing 2. Therefore, even if the user accidentally drops food when putting food into the cooking chamber 10 or taking food out from the cooking chamber 10 via the opening 13, the dropped food is suppressed from being hooked to the output terminal 8.

[0127] The output terminal 8 outputs electric power from the battery pack 15. Thereby, a user can connect an electronic device to the output terminal 8, and thereby can charge a secondary battery possessed by the electronic device.

[0128] The housing 2 includes a first outer member 28 and a second outer member 29. A seal portion 30 is provided at a boundary between the first outer member 28 and the second outer member 29. The seal portion 30 suppresses intrusion of foreign matter from the outside of the housing 2 into the inside of the housing 2. The foreign matter includes liquid (moisture). The inside of the housing 2 is waterproofed by the seal portion 30. Even if the microwave oven 1 is used at a work site or outdoors, the seal portion 30 suppresses intrusion of foreign matter into the inside of the housing 2.

[0129] The battery mounting portion 4 has a guide rail 43 that guides the battery pack 15 in the up-down direction. The battery pack 15 is mounted on the battery mounting portion 4 by being inserted from above the battery mounting portion 4. At a work site, the microwave oven 1 has a possibility of being used in a state of being placed on a floor surface or ground. A user can smoothly insert the battery pack 15 into the battery mounting portion 4 from above the battery mounting portion 4 in a state in which the microwave oven 1 is placed on a floor surface or ground.

[0130] In a state in which the battery pack 15 is mounted on the battery mounting portion 4, the upper surface 25 of the housing 2 is disposed at a position higher than the upper surface of the battery pack 15. The battery pack 15 does not protrude upwardly as compared with the upper surface 25 of the housing 2, and thus the microwave oven 1 is suppressed from being large in the up-down direction. In addition, a user can place an article on the upper surface 25 of the housing 2.

[0131] The battery mounting portion 4 includes a first battery mounting portion 41 and a second battery mounting portion 42 disposed beside the first battery mounting portion 41. The first battery mounting portion 41 and the second battery mounting portion 42 are disposed at positions symmetrical with each other in the left-right direction. In a case in which a first battery pack 151 mounted on the first battery mounting portion 41 and a second battery pack 152 mounted on the second battery mounting portion 42 are the same kind of battery pack 15, the weight balance performance of the microwave oven 1 in the left-right direction is optimized. Thereby, a user can smoothly carry the microwave oven 1 in a state in which the battery mounting portion 4 has the battery pack 15 mounted thereon. In addition, in a state in which the battery mounting portion 4 has the battery pack 15 mounted thereon, the microwave oven 1 is suppressed from being tilted.

[0132] The first battery pack 151 installed in the first battery mounting portion 41 is connected in parallel with the second battery pack 152 installed in the second battery mounting portion 42. The first battery pack 151 and the second battery pack 152 are connected in parallel, and thus the workable time of the microwave oven 1 is prevented from becoming short. In addition, even if the battery pack 15 is installed in one of the first battery mounting portion 41 and the second battery mounting portion 42, the microwave oven 1 can be operated in a state in which the battery pack 15 is not installed in the other of the first battery mounting portion 41 and the second battery mounting portion 42.

[0133] In the front portion of the housing 2, the interface portion 7 is provided at a position higher than the opening 13. Thus, the user can smoothly perform the operations of the power button 71, the output switching button 72, the stop button 73, the setting dial 74, and the recognition of the display 75 in a state in which the microwave oven 1 is placed on a floor surface or a floor.

[0134] In the front-rear direction, the handle 9 is connected to the central portion of the housing 2. In addition, the rotation axis of the hinge 91 extends in the left-right direction. Thus, the user can smoothly carry the microwave oven 1 by holding the handle 9 in a state in which the battery pack 15 is installed in the battery mounting portion 4. That is, in a state in which the battery pack 15 is installed in the battery mounting portion 4, there is a possibility that the weight balance performance of the microwave oven 1 in the front-rear direction deteriorates. The rotation axis of the hinge 91 of the handle 9 extends in the left-right direction, and thus even if the weight balance performance of the microwave oven 1 in the front-rear direction deteriorates, the user can smoothly carry the microwave oven 1 by holding the handle 9.

[0135] [Other Embodiments]

[0136] In the above-described embodiment, the seal portion 30 is a labyrinth seal. The seal portion 30 can also be a rubber seal provided between the first outer member 28 and the second outer member 29.

[0137] In the above-described embodiment, the first battery pack 151 installed in the first battery mounting portion 41 and the second battery pack 152 installed in the second battery mounting portion 42 are the same kind of battery pack 15. The first battery pack 151 installed in the first battery mounting portion 41 and the second battery pack 152 installed in the second battery mounting portion 42 can also be different kinds of battery pack 15. For example, the weight of the first battery pack 151 and the weight of the second battery pack 152 can also be different.

[0138] In the above-described embodiment, the microwave oven 1 can also have a tilt angle sensor that detects the tilt angle of the microwave oven 1.

[0139] Figure 14 is a perspective view of the microwave oven 1 of the embodiment having the tilt angle sensor 116. Figure 15is a block diagram of the microwave oven 1 having the tilt angle sensor 116 that represents an embodiment.

[0140] The tilt angle sensor 116 detects a tilt angle of the microwave oven 1 with respect to a horizontal plane. As the tilt angle sensor 116, a tilt sensor or an inertial sensor is exemplified. As the inertial sensor, an acceleration sensor or a gyro sensor is exemplified.

[0141] The controller 121 and the magnetron 122 are arranged at the bottom plate portion 101 of the metal plate member 100. The controller 121 includes a circuit board and a plurality of electronic components mounted on the circuit board. As the electronic components mounted on the circuit board, a processor such as a CPU, a memory such as a ROM or a RAM is exemplified. In addition, the controller 121 includes a power supply circuit arranged at the circuit board.

[0142] The tilt angle sensor 116 is arranged at the component chamber 11 of the housing 2. The tilt angle sensor 116 is mounted on the circuit board of the controller 121. The tilt angle sensor 116 detects a tilt angle of the microwave oven 1 with respect to a horizontal plane. The tilt angle of the microwave oven 1 can be a tilt angle of the circuit board, can be a tilt angle of the bottom plate portion 101, or can be a tilt angle of the housing 2. In the example shown in Figure 14 and Figure 15 In the example shown in FIG. 1, the tilt angle sensor 116 detects a tilt angle of the lower surface 26 of the housing 2 with respect to a horizontal plane as a tilt angle of the microwave oven 1. In a case where the microwave oven 1 is arranged at a setting surface parallel to a horizontal plane, the tilt angle of the lower surface 26 is 0 degree.

[0143] The controller 121 controls at least the magnetron 122 on the basis of detection data of the tilt angle sensor 116. The controller 121 controls the magnetron 122 on the basis of a tilt angle of the lower surface 26 detected by the tilt angle sensor 116 and a threshold value decided in advance. The threshold value of the tilt angle is, for example, 30 degrees.

[0144] The controller 121, in a case where it is determined that the tilt angle of the lower surface 26 detected by the tilt angle sensor 116 is less than the threshold value, starts the magnetron 122 when the power button 71 is pressed and stops the operation of the magnetron 122 when a heating time set by the setting dial 74 elapses.

[0145] The controller 121 prohibits the operation of the magnetron 122 in a case where the inclination angle of the lower surface 26 detected by the inclination angle sensor 116 is determined to be equal to or greater than the threshold value. For example, before the magnetron 122 is operated, even if the power button 71 is pressed, the controller 121 does not start the magnetron 122 in a case where the inclination angle of the lower surface 26 is determined to be equal to or greater than the threshold value. While the magnetron 122 is operated, even if the heating time set by the setting dial 74 has not elapsed, the controller 121 stops the operation of the magnetron 122 in a case where the inclination angle of the lower surface 26 is determined to be equal to or greater than the threshold value.

[0146] The controller 121 causes the display 75 to display display data indicating that the inclination angle of the lower surface 26 is equal to or greater than the threshold value in a case where the inclination angle of the lower surface 26 detected by the inclination angle sensor 116 is determined to be equal to or greater than the threshold value. In addition, the controller 121 can also output a sound indicating that the inclination angle of the lower surface 26 is equal to or greater than the threshold value from the sound output device 113 in a case where the inclination angle of the lower surface 26 detected by the inclination angle sensor 116 is determined to be equal to or greater than the threshold value. Thereby, the user can recognize the inclination of the microwave oven 1.

[0147] The portable microwave oven 1 has a possibility of being disposed on a set surface. If the inclination angle of the microwave oven 1 disposed on the set surface is too large, there is a possibility that the food disposed in the cooking chamber 10 is overturned and heating is performed in the state where the food is overturned. As a result, there is a possibility that the quality of the food is reduced. According to the embodiment, the operation of the microwave oven 1 is prohibited in a case where the inclination angle of the microwave oven 1 is equal to or greater than the threshold value. Thereby, the reduction in the quality of the food is suppressed.

Claims

1. A microwave oven, wherein, Possessing: a housing; a cooking chamber provided inside the housing; a component chamber provided inside the housing and configured with a heat generating component; a door that opens and closes a first opening provided at a front portion of the housing and communicating with the cooking chamber; a battery mounting portion provided at a rear portion of the housing and allowing a battery pack to be attached and detached; and an exhaust port provided at a rear portion of the housing and allowing air discharged from the component chamber to flow therethrough, the exhaust port is provided at a position lower than the battery mounting portion at the rear portion of the housing, the battery pack protrudes rearward beyond a rear surface of the housing in a state of being mounted to the battery mounting portion.

2. The microwave oven according to claim 1, wherein the microwave oven possesses an air intake port provided at a front portion of the housing and allowing air drawn into an inside of the component chamber to flow therethrough.

3. The microwave oven according to claim 2, wherein the air intake port is provided at a position lower than the first opening at the front portion of the housing.

4. The microwave oven according to claim 2 or 3, wherein the microwave oven possesses a cover plate that can be attached and detached with respect to a second opening communicating with the component chamber, the air intake port includes a through-hole provided at the cover plate.

5. The microwave oven according to claim 2 or 3, wherein the microwave oven possesses a filter element that recovers foreign matter from air drawn from the air intake port.

6. The microwave oven according to claim 5, wherein the filter element is disposed inside the housing so as to face the air intake port.

7. The microwave oven according to any one of claims 1 to 3, wherein the component chamber is provided at a position lower than the cooking chamber.

8. The microwave oven according to any one of claims 1 to 3, wherein the microwave oven possesses a metal plate member that is disposed inside the housing, the heat generating component is supported by the metal plate member.

9. The microwave oven according to claim 8, wherein the metal plate member includes a bottom plate portion, the heat generating component is supported by the bottom plate portion.

10. The microwave oven according to claim 9, wherein the metal plate member includes a front plate portion connected to a front portion of the bottom plate portion and a rear plate portion connected to a rear portion of the bottom plate portion, the front plate portion and the rear plate portion each have an air passage.

11. The microwave oven according to claim 8, wherein the door is linked to the metal plate member via a hinge, a rotation axis of the hinge extends in a vertical direction, the microwave oven possesses an output terminal provided at a lower side of the hinge at the front portion of the housing.

12. The microwave oven according to claim 11, wherein the output terminal outputs electric power from the battery pack.

13. The microwave oven according to any one of claims 1 to 3, wherein the housing includes a first outer member and a second outer member, the microwave oven possesses a seal portion provided at a boundary between the first outer member and the second outer member.

14. The microwave oven according to claim 13, wherein The seal portion includes a labyrinth seal including a first labyrinth portion provided at an end portion of the first outer member and a second labyrinth portion provided at an end portion of the second outer member.

15. The microwave oven according to any one of claims 1 to 3, wherein The battery mounting portion has a guide rail that guides the battery pack in the up-down direction, The battery pack is inserted from above the battery mounting portion, whereby the battery pack is mounted to the battery mounting portion.

16. The microwave oven according to claim 15, wherein In a state in which the battery pack is mounted to the battery mounting portion, an upper surface of the housing is disposed at a position higher than an upper surface of the battery pack.

17. The microwave oven according to any one of claims 1 to 3, wherein The battery mounting portion includes a first battery mounting portion and a second battery mounting portion, The first battery mounting portion and the second battery mounting portion are disposed in the left-right direction.

18. The microwave oven according to claim 17, wherein A first battery pack mounted to the first battery mounting portion is connected in parallel with a second battery pack mounted to the second battery mounting portion.

19. The microwave oven according to any one of claims 1 to 3, wherein, provided with: an air inlet provided at a position lower than the first opening in the front portion of the housing and through which an air flow drawn into the interior of the component chamber passes; a handle connected to an upper portion of the housing via a hinge having a rotation axis extending in the left-right direction; and an interface portion provided at a position higher than the first opening in the front portion of the housing and having at least a power button. ​

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