Cooking appliance

Abstract

To provide a cooking appliance capable of efficiently cooling a detection unit.SOLUTION: A cooking appliance 100 comprises a body 60, a fan 210, a detection unit 430, and a first induction unit 501. The body 60 has a suction port 62. The fan 210 generates an airflow. The detection unit 430 is arranged below the suction port 62 of the body 60 and a suction port of the fan 210, and detects the opening / closing of a door 20. The first induction unit 501 induces the airflow from the suction port 62 of the body 60 to the detection unit 430.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present invention relates to a cooking device. [Background technology]

[0002] Patent Document 1 discloses a cooking device. The cooking device disclosed in Patent Document 1 includes a heating chamber, a door, a magnetron, and a cooling fan. The heating chamber accommodates an object to be heated. The magnetron is disposed below the heating chamber. The cooling fan is disposed below the heating chamber and in front of the magnetron. The cooling fan blows air toward the magnetron. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-112292 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in a cooking appliance, the detector that detects whether the door is open or closed is located on the side wall of the heating chamber, and the cooling fan is located below the heating chamber, so the detector is sometimes not cooled sufficiently.

[0005] In view of the above-mentioned problems, an object of the present invention is to provide a cooking appliance capable of efficiently cooling a detection unit. [Means for solving the problem]

[0006] According to one aspect of the present invention, a cooking appliance includes a main body, a fan, a detection unit, and a first induction unit. The main body has an air inlet. The fan generates an airflow. The detection unit is disposed below the air inlet of the main body and the air inlet of the fan, and detects whether a door is open or closed. The first induction unit guides the airflow from the air inlet of the main body to the detection unit. [Effects of the Invention]

[0007] According to the cooking device of the present invention, the detection unit can be cooled efficiently. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view showing a cooking device according to an embodiment of the present invention; [Figure 2] 1 is a perspective view showing a cooking device with a housing removed according to an embodiment of the present invention; [Figure 3] 1 is a perspective view showing a cooking device with a housing removed according to an embodiment of the present invention; [Figure 4] FIG. 2 is a perspective view showing a door according to the present embodiment. [Figure 5] 1 is a perspective view showing a cooking device with a housing removed according to an embodiment of the present invention; [Figure 6] 1 is a diagram showing a schematic cross section of a cooking device according to an embodiment of the present invention; [Figure 7] FIG. 2 is a diagram showing a schematic cross section of a blower unit according to the embodiment. [Figure 8] 1 is a perspective view showing a cooking device with a housing removed according to an embodiment of the present invention; [Figure 9] FIG. 2 is a diagram showing a schematic cross section of a blower unit according to the embodiment. [Figure 10] 1 is a block diagram showing a configuration of a cooking device according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a cooking device according to the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference characters and description thereof will not be repeated.

[0010] A cooking device 100 according to this embodiment will be described with reference to Fig. 1. Fig. 1 is a perspective view showing the cooking device 100. Fig. 1 also shows the appearance of the cooking device 100 as seen from above, diagonally front right. As shown in Fig. 1, the cooking device 100 cooks an object to be heated. The object to be heated is, for example, food. The cooking device 100 comprises a housing 10, a door 20, and an operation panel 30. The housing 10 is an example of a part of the "main body".

[0011] The operation panel 30 is a substantially rectangular plate-like member. The operation panel 30 accepts operations from the user. The operations include, for example, a cooking method for cooking an object to be heated. Specifically, the operation panel 30 has a display unit. The display unit displays various types of information. Specifically, the display unit includes a liquid crystal panel.

[0012] In this embodiment, the side of the cooking appliance 100 on which the operation panel 30 is located is defined as the front side of the cooking appliance 100, and the opposite side (rear side) is defined as the rear side of the cooking appliance 100. Furthermore, the right side when viewing the cooking appliance 100 from the front side is defined as the right side of the cooking appliance 100, and the opposite side is defined as the left side of the cooking appliance 100. Furthermore, in a direction perpendicular to the front-rear and left-right directions of the cooking appliance 100, the side on which the operation panel 30 is located is defined as the top side of the cooking appliance 100, and the opposite side (bottom side) is defined as the bottom side of the cooking appliance 100. Note that these directions do not limit the orientation of the cooking appliance 100 of the present invention when in use. In this embodiment, the first direction D1 is the upward direction. The second direction D2 is the forward direction. The third direction D3 is the leftward direction.

[0013] The housing 10 is a box-shaped member. Specifically, the housing 10 has a right outer wall 11, a left outer wall 12, an upper outer wall 13, a lower outer wall 14, and a rear outer wall 15. The rear outer wall 15 intersects with the second direction D2. The right outer wall 11 and the left outer wall 12 face each other in the third direction D3. The upper outer wall 13 and the lower outer wall 14 face each other in the first direction D1.

[0014] Next, the cooking chamber 50 will be described with reference to Figs. 1 to 3. Figs. 2 and 3 are perspective views showing the cooking device 100 with the housing 10 removed. Fig. 2 shows the appearance of the cooking device 100 viewed from above and diagonally front right. Fig. 3 shows the appearance of the cooking device 100 viewed from below and diagonally front right. As shown in Figs. 1 to 3, the cooking device 100 further includes the cooking chamber 50 and a front wall 60. The front wall 60 is an example of a part of the "main body".

[0015] The cooking chamber 50 is housed in the housing 10. The cooking chamber 50 houses an object to be heated. The shape of the cooking chamber 50 is, for example, a substantially rectangular parallelepiped. Specifically, the cooking chamber 50 has a right wall 51, a left wall 52, an upper wall 53, a lower wall 54, and a rear wall 55. The rear wall 55 intersects with the second direction D2. The right wall 51 and the left wall 52 face the third direction D3. The upper wall 53 and the lower wall 54 face the first direction D1. The right wall 51, the left wall 52, the upper wall 53, the lower wall 54, and the rear wall 55 are each made of a material such as a metal.

[0016] A dish-shaped member may be housed in the cooking chamber 50. An object to be heated can be placed on the dish-shaped member. Specifically, the dish-shaped member is rotatable about a rotation axis along the first direction D1.

[0017] The cooking device 100 further includes a first space R1, a second space R2, a third space R3, a fourth space R4, and a fifth space R5. The first space R1 is disposed between the upper outer wall 13 and the upper wall 53. The second space R2 is disposed between the lower outer wall 14 and the lower wall 54. The third space R3 is disposed between the rear outer wall 15 and the rear wall 55. The fourth space R4 is disposed between the right outer wall 11 and the right wall 51. The fifth space R5 is disposed between the left outer wall 12 and the left wall 52.

[0018] The front wall 60 is a rectangular annular plate-like member. The front wall 60 faces the rear wall 55. The front wall 60 also faces the rear outer wall 15. The front wall 60 has an opening 61, a plurality of through-holes 62, a first through-hole 63, and a second through-hole 64. Each of the plurality of through-holes 62 is an example of an "inlet." The opening 61 connects the inside and outside of the cooking chamber 50.

[0019] The plurality of through-hole portions 62 are located above the opening 61. Each of the plurality of through-hole portions 62 communicates between the inside and outside of the first space R1. The plurality of through-hole portions 62 form seven rows. Each of the seven through-hole portions 62 is formed by three through-holes arranged in a row along the vertical direction.

[0020] The first through-hole 63 is formed at a position to the left of the opening 61. The second through-hole 64 is formed at a position to the right of the opening 61.

[0021] Continuing, the door 20 will be described with reference to Figures 1 to 4. Figure 4 is a perspective view showing the door 20. As shown in Figures 1 to 4, the door 20 has a substantially rectangular plate-shaped member 21 and a rotation shaft portion 22.

[0022] The rotation shaft portion 22 is located below the plate-shaped member 21. The plate-shaped member 21 opens and closes the opening 61. Specifically, the plate-shaped member 21 rotates on a rotation shaft along the third direction D3. The plate-shaped member 21 opens the opening 61 in a state perpendicular to the first direction D1. On the other hand, the plate-shaped member 21 closes the opening 61 in a state perpendicular to the second direction D2.

[0023] Specifically, the door 20 has a first connecting member 23 and a second connecting member 24. Each of the first connecting member 23 and the second connecting member 24 connects the cooking chamber 50 and the door 20 when the door 20 is in the closed position.

[0024] The first connecting member 23 and the second connecting member 24 are attached to the plate-shaped member 21. The first connecting member 23 and the second connecting member 24 face each other in the left-right direction. The first connecting member 23 is attached to the left edge of the rear surface of the plate-shaped member 21. The second connecting member 24 is attached to the right edge of the rear surface of the plate-shaped member 21.

[0025] For example, each of the first connecting member 23 and the second connecting member 24 has a hook member. The hook member is a plate-shaped member with its longitudinal direction in the front-to-rear direction. The hook member has a claw portion and a rotating pin portion. The rotating pin portion is located at one end of the hook member. The rotating pin portion rotates around a rotation axis extending along the third direction D3. Meanwhile, the claw portion has a protrusion that protrudes downward. The claw portion is located at the other end of the hook member. As a result, the claw portion is rotatable around the rotating pin portion.

[0026] 1 to 5, the first detection unit 430 and the second detection unit 440 will be described. FIG. 5 is a perspective view showing the cooking appliance 100. In detail, FIG. 5 shows the external appearance of the cooking appliance 100 as seen from above diagonally rear left. As shown in FIGS. 1 to 5, the cooking appliance 100 includes the first detection unit 430 and the second detection unit 440.

[0027] The first detection unit 430 and the second detection unit 440 are attached to the cooking chamber 50. The first detection unit 430 is attached to the left wall 52 of the cooking chamber 50. More specifically, the first detection unit 430 is attached to the rear side of the first through-hole 63. The first detection unit 430 is disposed lower than the plurality of through-hole portions 62. The second detection unit 440 is attached to the right wall 51 of the cooking chamber 50. More specifically, the second detection unit 440 is attached to the rear side of the second through-hole 64. The second detection unit 440 is disposed lower than the plurality of through-hole portions 62.

[0028] The first detection unit 430 detects whether the door 20 is open or closed. Specifically, the first detection unit 430 has a hole and two sensors. The shape of the hole corresponds to the shape of the claws of the first connection member 23. The two sensors output a first detection signal when the claws of the first connection member 23 are positioned within the hole. On the other hand, the two sensors do not output a first detection signal when the claws are not positioned within the hole.

[0029] The second detection unit 440 detects whether the door 20 is open or closed. Specifically, the second detection unit 440 has a hole and two sensors. The shape of the hole corresponds to the shape of the claws of the second connection member 24. The two sensors output a second detection signal when the claws of the second connection member 24 are positioned within the hole. On the other hand, the two sensors do not output a second detection signal when the claws are not positioned within the hole.

[0030] Next, the cooking device 100 will be further described with reference to Fig. 2 to Fig. 8. Fig. 6 is a diagram showing a schematic cross section of the cooking device 100. Specifically, Fig. 6 is a cross section showing the cooking device 100 cut along a plane perpendicular to the third direction D3. Fig. 7 is a diagram showing a schematic cross section of the air blower section 140 according to this embodiment. Fig. 8 is a perspective view showing the cooking device 100. Specifically, Fig. 8 shows the external appearance of the cooking device 100 as seen from above diagonally rear right.

[0031] 2 to 8, the cooking device 100 includes a microwave supply unit 110, a first heater unit 120, a second heater unit 130, and a blower unit 140. Each of the microwave supply unit 110, the first heater unit 120, the second heater unit 130, and the blower unit 140 heats an object to be heated.

[0032] First, a description will be given of the microwave supply unit 110. The microwave supply unit 110 supplies microwaves into the cooking chamber 50.

[0033] The microwave supply unit 110 is disposed on the upper wall 53 of the cooking chamber 50. Specifically, the microwave supply unit 110 is located above the cooking chamber 50 via the upper wall 53. The microwave supply unit 110 has a partition member 111, a radiation chamber, a magnetron 113, and a waveguide 114.

[0034] Magnetron 113 is disposed closer to front wall 60 than first heater section 120. Magnetron 113 generates microwaves. Waveguide 114 propagates the microwaves generated by the magnetron to the radiation chamber, and supplies the microwaves to the inside of cooking chamber 50.

[0035] The partition member 111 is disposed between the radiation chamber and the upper wall 53 of the cooking chamber 50. The material of the partition member 111 is non-metallic and includes, for example, ceramics or mica. As a result, the material of the partition member 111 includes ceramics or mica, so that the partition member 111 is transparent to microwaves. On the other hand, the material of the radiation chamber and the waveguide 114 includes metal.

[0036] Cooking chamber 50 further has air intake hole 81, air exhaust hole 82, air intake damper 83, and air exhaust damper 84. Air intake hole 81 is an example of an "opening." Air intake damper 83 is an example of a "damper."

[0037] Air intake hole portion 81 communicates between the inside and outside of cooking chamber 50. Specifically, air intake hole portion 81 is arranged in left wall 52. The shape of air intake hole portion 81 is, for example, rectangular. Specifically, air intake hole portion 81 is, for example, a collection of multiple punched holes. The punched holes are, for example, circular. The diameter of the punched holes of air intake hole portion 81 is, for example, 3.4 mm to prevent microwave leakage.

[0038] Air intake damper 83 opens and closes air intake hole 81. Air intake damper 83 is attached to the outside of left wall 52. For example, when air intake damper 83 opens air intake hole 81, the inside and outside of cooking chamber 50 are connected to each other. As a result, air is guided to air intake hole 81. On the other hand, when air intake damper 83 closes air intake hole 81, the inside and outside of cooking chamber 50 are not connected to each other. As a result, air is not guided to air intake hole 81. For example, air intake damper 83 includes a motor, a member driven by the motor, and a damper open / close detection switch.

[0039] Furthermore, exhaust hole portion 82 communicates the inside and outside of cooking chamber 50. Specifically, exhaust hole portion 82 is arranged in right wall 51. The shape of exhaust hole portion 82 is, for example, rectangular. Specifically, exhaust hole portion 82 is, for example, a collection of multiple punched holes. The punched holes are, for example, circular. The diameter of the punched holes in exhaust hole portion 82 is, for example, 3.4 mm to prevent microwave leakage.

[0040] The exhaust damper 84 opens and closes the exhaust hole 82. The exhaust damper 84 is attached to the outside of the right wall 51. For example, when the exhaust damper 84 opens the exhaust hole 82, the inside and outside of the cooking chamber 50 communicate with each other. On the other hand, when the exhaust damper 84 closes the exhaust hole 82, the inside and outside of the cooking chamber 50 do not communicate with each other. For example, the exhaust damper 84 includes a motor, a member driven by the motor, and a damper open / close detection switch.

[0041] Next, the air flow will be described in detail. First, intake damper 83 opens intake hole 81, and exhaust damper 84 opens exhaust hole 82. As a result, air is guided to intake hole 81. The air is blown out into cooking chamber 50 through intake hole 81. The air blown out into cooking chamber 50 from intake hole 81 moves in the opposite direction to third direction D3. The air is then exhausted out of cooking chamber 50 from exhaust hole 82.

[0042] Next, the first heater section 120 will be described. The first heater section 120 is disposed on the upper wall 53 of the cooking chamber 50. The first heater section 120 includes a first heater 121 and a cover section 122. The first heater 121 is, for example, a carbon heater. When energized, the first heater 121 generates heat. As a result, the temperature rises quickly, allowing the heated food to be cooked in a short time. The cover section 122 covers the upper, front, and rear of the first heater 121. Specifically, the cover section 122 includes a heat reflecting plate 122a and a heat shielding plate 122b. The heat reflecting plate 122a covers the upper, front, and rear of the first heater 121. The heat shielding plate 122b covers the upper, front, and rear of the heat reflecting plate 122a. An air layer 122c is provided between the heat reflecting plate 122a and the heat shielding plate 122b. As a result, heat transfer from the first heater 121 to the first space R1 can be suppressed. Therefore, the output of the first heater 121 can be increased, shortening the cooking time. Here, airflow may be circulated through the air layer 122c, or a heat insulating material may be used instead of the air layer 122c. As a result, heat transfer from the first heater 121 to the first space R1 can be further suppressed. Alternatively, a second heat shielding plate may be provided between the heat reflecting plate 122a and the heat shielding plate 122b, an air layer may be formed between the heat reflecting plate 122a and the second heat shielding plate, and a heat insulating material may be provided between the second heat shielding plate and the heat shielding plate 122b. This further suppresses heat transfer from the first heater 121 to the first space R1. The terminals of the first heater 121 may be disposed outside the heat shielding plate 122b. As a result, the influence of hot air on the terminals of the first heater 121 can be suppressed. Therefore, the output of the first heater 121 can be increased, and the cooking time can be shortened.

[0043] Next, the second heater section 130 will be described. The second heater section 130 is disposed on the bottom wall 54 of the cooking chamber 50. The second heater section 130 has a second heater 131 and a second heater case 132. The second heater 131 is, for example, a nichrome wire. When energized, the second heater 131 generates heat. The output of the second heater 131 is lower than the output of the first heater 121. The second heater case 132 covers the lower, front, and rear of the second heater 131. The material of the second heater case 132 includes metal. When energized, the second heater 131 generates heat.

[0044] Next, we will explain the air blower 140. The air blower 140 supplies hot air into the interior of the cooking chamber 50. The air blower 140 is disposed on the rear wall 55. Specifically, the air blower 140 is located behind the cooking chamber 50 with the rear wall 55 interposed between them.

[0045] Specifically, blower 140 has blower chamber 141, third heater 142, centrifugal fan 143, drive unit 144, partition member 145, and heat shield plate 146. Blower chamber 141 is, for example, a box-shaped member made of metal. Centrifugal fan 143 has a plurality of blades.

[0046] The third heater 142 and the centrifugal fan 143 are housed inside the blower chamber 141. The third heater 142 heats the air inside the blower chamber 141 to generate hot air. Specifically, the shape of the third heater 142 is a ring when viewed from the front to the rear. The third heater 142 is disposed along the outer periphery of the centrifugal fan 143.

[0047] The rear wall 55 has suction holes and blowout holes. Specifically, the suction holes are, for example, a collection of multiple punched holes. Similarly, the blowout holes are, for example, a collection of multiple punched holes. The punched holes are, for example, circular. The diameter of each punched hole in the suction holes and the blowout holes is, for example, 3.4 mm to prevent microwave leakage.

[0048] The partition member 145 is, for example, a metal plate-like member. The shape of the partition member 145 is, for example, rectangular when viewed from the front to the rear. The partition member 145 is disposed over substantially the entire surface of the rear wall 55. Specifically, the partition member 145 is located on the outer side of the rear wall 55.

[0049] The heat shield 146 is, for example, a metal plate-like member. When viewed from the front to the rear, the heat shield 146 has, for example, a rectangular ring-shaped plate-like member. The heat shield 146 is located outside the partition member 145.

[0050] Drive unit 144 is located outside blower chamber 141. Specifically, drive unit 144 is located outside heat shield 146, and a shaft portion of drive unit 144 penetrates partition member 145 and heat shield 146 and is connected to centrifugal fan 143. Drive unit 144 drives centrifugal fan 143. Drive unit 144 includes, for example, a motor.

[0051] Air blower 140 draws in hot air from inside cooking chamber 50 through the suction holes, and blows the hot air into cooking chamber 50 through the outlet holes. More specifically, air blower 140 draws in hot air from the center of cooking chamber 50, and blows the hot air toward the periphery of cooking chamber 50. As a result, the entire interior of cooking chamber 50 can be heated by driving air blower 140.

[0052] Next, the first fan 210, the left first guide section 501, and the left second guide section 520 will be further described with reference to Fig. 5 to Fig. 9. Fig. 9 is a diagram showing a schematic cross section of the cooking device 100. In detail, Fig. 9 is a cross section showing the cooking device 100 cut along a plane perpendicular to the third direction D3. As shown in Figs. 5 to 9, the cooking device 100 further includes the first fan 210, the left first guide section 501, and the left second guide section 520.

[0053] For example, first fan 210 is a sirocco fan. First fan 210 is disposed on top wall 53 of cooking chamber 50. First fan 210 is also disposed between rear wall 55 of cooking chamber 50 and rear outer wall 15 of housing 10. Specifically, first fan 210 is disposed in the area where first space R1 and third space R3 overlap.

[0054] Specifically, the first fan 210 is positioned at the same height as the plurality of through-hole portions 62. The first fan 210 is disposed above the first detection unit 430. In other words, the first detection unit 430 is disposed below the air inlet of the first fan 210. The first fan 210 takes in air from outside the cooking appliance 100. The first fan 210 also discharges the air into the third space R3.

[0055] The left-side first guide portion 501 guides the airflow from the multiple through-hole portions 62 to the first detection portion 430. The left-side first guide portion 501 is arranged on the left wall 52. The left-side first guide portion 501 is a wall body. The left-side first guide portion 501 stands on the left wall 52. The left-side first guide portion 501 extends from above the left-side through-hole portion 62 of the multiple through-hole portions 62 toward the rear of the first detection portion 430, and then extends downward.

[0056] The left-side second guide section 520 guides the airflow from the first detection section 430 to the intake damper section 83. The left-side second guide section 520 is disposed on the left wall 52. Specifically, the left-side second guide section 520 has an upper wall body 521 and a lower wall body 522. The left-side second guide section 520 is erected on the left wall 52. The upper wall body 521 extends from the lower end of the left-side first guide section 501 toward the front of the intake damper section 83 and then toward the upper wall 53. The lower wall body 522 extends from the front wall 60, passing below the first detection section 430 and behind the intake damper section 83, and then toward the upper wall 53. As a result, the inlet 520b of the left-side second guide section 520 is located below the first detection section 430. Moreover, the outlet 520a of the left-side second guide portion 520 is provided above the intake damper portion 83. Furthermore, the outlet 520a of the left-side second guide portion 520 is provided below the plurality of through-hole portions 62. The outlet 520a of the left-side second guide portion 520 opens in the opposite direction to the second direction D2.

[0057] Here, the airflow generated by driving the first fan 210 will be described. When the first fan 210 is driven, it draws air from the outside of the cooking appliance 100 through the multiple through-holes 62 and into the space between the housing 10 and the cooking chamber 50. The airflow drawn into the space between the housing 10 and the cooking chamber 50 is directed toward the first detection unit 430 by the left-side first guide unit 501. At this time, the airflow cools the first detection unit 430. After cooling the first detection unit 430, the airflow enters the inlet 520b of the left-side second guide unit 520 and flows in the opposite direction to the second direction D2 before heading toward the intake damper unit 83. At this time, the airflow cools the intake damper unit 83. More specifically, the airflow cools the motor and the damper open / close detection switch of the intake damper unit 83. In other words, the first fan 210 generates an airflow EF that flows sequentially through the first detection unit 430 and the intake damper unit 83. Specifically, the first fan 210 generates an airflow EF that flows through the first detection unit 430, the inlet 520b of the left second guiding unit 520, the intake damper unit 83, and the outlet 520a of the left second guiding unit 520 in this order.

[0058] Furthermore, when the first fan 210 is driven, it generates an outlet airflow BF1. The outlet airflow BF1 is blown downward. The outlet airflow BF1 flows downward through the third space R3 between the blower unit 140 and the rear outer wall 15. At this time, the outlet airflow BF1 cools the drive unit 144 of the blower unit 140.

[0059] 1 to 9, according to the cooking appliance 100, the left first guide portion 501 guides the airflow EF to the first detection portion 430, and therefore it is possible to efficiently cool the through-hole portion 62 and the first detection portion 430 which is arranged below the air inlet of the first fan 210. This eliminates the need to add an auxiliary fan for cooling the first detection portion 430, and makes it possible to prevent the cooking appliance 100 from becoming larger in size.

[0060] The left-side second guide section 520 guides the airflow EF to the intake damper section 83, thereby efficiently cooling the intake damper section 83. Furthermore, the inlet 520b of the left-side second guide section 520 is provided below the first detection section 430, thereby efficiently cooling the first detection section 430 and the intake damper section 83 in that order. Furthermore, the outlet 520a of the left-side second guide section 520 is provided above the intake damper section 83, thereby generating an airflow EF that flows through the first detection section 430 and the intake damper section 83 in that order. Furthermore, the outlet 520a of the left-side second guide section 520 is provided below the through-hole section 62, thereby preventing the outlet 520a from acting as a resistance to the airflow flowing through the first space R1. Furthermore, the outlet 520a of the left-side second guide section 520 opens in the opposite direction to the second direction D2, thereby preventing the airflow flowing through the first space R1 from flowing in.

[0061] Continuing, the second fan 220 will be described with reference to Figures 5 to 9. As shown in Figures 5 to 9, the cooking appliance 100 further includes the second fan 220, a right-side first guiding portion 601, and a right-side second guiding portion 620.

[0062] The second fan 220 is, for example, a sirocco fan. The first fan 210 and the second fan 220 are arranged side by side in the left-right direction. The second fan 220 is arranged on the upper wall 53 of the cooking chamber 50. The second fan 220 is also arranged between the rear wall 55 of the cooking chamber 50 and the rear outer wall 15 of the housing 10. Specifically, the second fan 220 is arranged in the area where the first space R1 and the third space R3 overlap.

[0063] Specifically, the second fan 220 is positioned at the same height as the plurality of through-hole portions 62. The second fan 220 is disposed above the second detection unit 440. In other words, the second detection unit 440 is disposed below the air inlet of the second fan 220. The second fan 220 generates an airflow between the upper wall 53 of the cooking chamber 50 and the upper outer wall 13 of the housing 10. The second fan 220 takes in air from outside the cooker 100. The second fan 220 also expels the air into the third space R3.

[0064] The right-side first guiding section 601 guides the airflow from the plurality of through-holes 62 to the second detection section 440. The right-side first guiding section 601 is disposed on the right wall 51. The right-side first guiding section 601 has the same configuration as the left-side first guiding section 501.

[0065] The right second guide section 620 guides the airflow from the second detection section 440 to the exhaust damper section 84. The right second guide section 620 is disposed on the right wall 51. The right second guide section 620 has the same configuration as the left second guide section 520.

[0066] Here, the airflow generated by driving the second fan 220 will be described. When the second fan 220 is driven, it draws air from the outside of the cooking appliance 100 through the multiple through-holes 62 and into the space between the housing 10 and the cooking chamber 50. The airflow drawn into the space between the housing 10 and the cooking chamber 50 is directed toward the second detection unit 440 by the right-side first guide unit 601. At this time, the airflow cools the second detection unit 440. After cooling the second detection unit 440, the airflow enters the inlet of the right-side second guide unit 620, flows in the opposite direction to the second direction D2, and then flows toward the exhaust damper unit 84. At this time, the airflow cools the exhaust damper unit 84. Specifically, the airflow cools the motor and the damper open / close detection switch of the exhaust damper unit 84. In other words, the second fan 220 generates an airflow that flows sequentially through the second detection unit 440 and the exhaust damper unit 84.

[0067] Furthermore, when the second fan 220 is driven, it generates an outlet airflow DF1. The outlet airflow DF1 is blown downward. The outlet airflow DF1 flows downward through the third space R3 between the blower unit 140 and the rear outer wall 15. At this time, the outlet airflow BF1 cools the drive unit 144 of the blower unit 140.

[0068] As described above, according to the cooking appliance 100, the right-side first guiding section 601 guides the airflow to the second detecting section 440, and therefore can efficiently cool the through-hole section 62 and the second detecting section 440, which is disposed below the air inlet of the second fan 220. The right-side second guiding section 620 guides the airflow to the exhaust damper section 84, and therefore can efficiently cool the exhaust damper section 84. This eliminates the need to add an auxiliary fan to cool the first detecting section 430, and can prevent the cooking appliance 100 from becoming larger in size.

[0069] Next, the control board 300 will be described with reference to Fig. 10. Fig. 10 is a block diagram showing the configuration of the cooking appliance 100. As shown in Figs.

[0070] The control board 300 includes a storage unit 310 and a control unit 320. The storage unit 310 is configured with a RAM (Random Access Memory) and a ROM (Read Only Memory). The storage unit 310 stores a control program for controlling the operation of each unit of the cooking appliance 100.

[0071] The control unit 320 is a hardware circuit including a processor such as a CPU (Central Processing Unit). The control unit 320 executes a control program stored in the storage unit 310.

[0072] In this embodiment, the cooker 100 has three cooking modes: a "microwave heating mode," a "hot air circulation heating mode," and a "grill heating mode." The "microwave heating mode" is a mode in which an object to be heated is cooked by primarily radiating microwaves into the cooking chamber 50. The "grill heating mode" is a mode in which an object to be heated is cooked by primarily radiating heat generated by the first heater section 120 and the second heater section 130 to the object to be heated. The "hot air circulation heating mode" is a mode in which an object to be heated is cooked by primarily circulating hot air throughout the cooking chamber 50 to homogenize the temperature within the cooking chamber 50.

[0073] A first detection signal and a second detection signal are input to the control unit 320. Specifically, when the door 20 is located in the closed position, the first detection signal and the second detection signal are input to the control unit 320. As a result, the control unit 320 determines that it is possible to cook the object to be heated. On the other hand, when the door 20 is not located in the closed position, the first detection signal and the second detection signal are not input to the control unit 320. As a result, the control unit 320 determines that it is impossible to cook the object to be heated.

[0074] In addition, when the control unit 320 determines that it is possible to cook the heated object, it executes a control program stored in the memory unit 310 to control the operation of the microwave supply unit 110, the blower unit 140, the first heater unit 120, the second heater unit 130, the first fan 210, the second fan 220, the intake damper unit 83, and the exhaust damper unit 84.

[0075] In detail, the control unit 320 controls the operation panel 30, the magnetron 113, the first heater 121, the second heater 131, the third heater 142, the drive unit 144, the first fan 210, the second fan 220, the intake damper unit 83, and the exhaust damper unit 84. For example, when the "microwave heating mode" is selected, the control unit 320 drives the magnetron 113, the first fan 210, the second fan 220, the intake damper unit 83, and the exhaust damper unit 84. When the "grill heating mode" is selected, the control unit 320 drives the first heater 121, the second heater 131, the first fan 210, and the second fan 220. Furthermore, when the "hot air circulation heating mode" is selected, the control unit 320 drives the drive unit 144, the first fan 210, and the second fan 220, and also drives at least one of the first heater 121, the second heater 131, and the third heater 142.

[0076] The embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to the above embodiments and can be embodied in various forms without departing from the spirit and scope of the present invention. The drawings mainly show each component in a schematic manner for ease of understanding, and the thickness, length, number, etc. of each component shown in the drawings may differ from the actual ones due to the convenience of creating the drawings. Furthermore, the materials, shapes, dimensions, etc. of each component shown in the above embodiments are merely examples and are not particularly limited, and various modifications are possible within a scope that does not substantially depart from the effects of the present invention. [Industrial Applicability]

[0077] INDUSTRIAL APPLICABILITY The present invention provides a cooking device and has industrial applicability. [Explanation of symbols]

[0078] 10. Housing (main body) 52 Left Wall 60 Front wall (main body) 62 Through hole (suction port) 100 Cooker 110 Microwave supply unit 113 Magnetron 120 First heater section 210 First Fan 430 First detection unit 501 Left side first guide section (first guide section) 520 Left side second guide part (second guide part)

Claims

1. a main body having a suction port; A fan that generates airflow, a detection unit that is disposed below the air inlet of the main body and the air inlet of the fan and detects whether a door is open or closed; a first induction section that induces the airflow from the suction port of the main body to the detection section; A heating cooker comprising:

2. a damper section that opens and closes an opening in a cooking chamber that accommodates an object to be heated; a second guide portion that guides the airflow from the detection portion to the damper portion; The cooking device according to claim 1 , further comprising:

3. The cooking device according to claim 2 , wherein an inlet of the second induction section is provided below the detection section.

4. The cooking device according to claim 2 or 3, wherein an outlet of the second induction section is provided above the damper section.

5. The cooking device according to claim 4 , wherein the outlet of the second induction section is provided below the inlet of the main body.

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