Heating Regulator
By positioning the cooling fan and intake differently and shielding the intake area, the configuration stabilizes airflow and air pressure, mitigating the fan's impact on combustion in cooking appliances with both combustion and induction heating sections.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- RINNAI CORP
- Filing Date
- 2022-11-30
- Publication Date
- 2026-06-04
Smart Images
Figure 0007870238000001 
Figure 0007870238000002 
Figure 0007870238000003
Abstract
Description
Technical Field
[0001] The technology disclosed in this specification relates to a cooking heater.
Background Art
[0002] Patent Document 1 discloses a cooking heater. The cooking heater includes a main body having a front face facing a user, a top plate provided on the upper part of the main body, at least one cooking heater section provided on the top plate, a heating chamber provided inside the main body, and at least one heating chamber heater section provided in the heating chamber. The at least one cooking heater section includes an induction heating section. The cooking heater further includes a power control board provided inside the main body for controlling the power supplied to the induction heating section, and a cooling fan provided inside the main body for cooling the power control board.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] In some cases, in order to be able to cook with high heating capacity, a combustion heating section may be included in either at least one cooking heater section or at least one heating chamber heater section. In this case, inside the main body, an injection nozzle for injecting fuel and an intake port for taking in primary air together with the fuel injected from the injection nozzle are provided, and a mixing pipe for supplying a mixed gas in which the fuel and the primary air are mixed to the combustion heating section is provided.
[0005] In a cooking appliance equipped with both a combustion heating section and an induction heating section, as described above, the cooling fan may operate while the combustion heating section is burning. In this case, if the operation of the cooling fan causes fluctuations in the amount of primary air flowing into the intake, it may affect the combustion in the combustion heating section. This specification provides a technology that can suppress the effect of the operation of a cooling fan attached to the induction heating section on the combustion in the combustion heating section. [Means for solving the problem]
[0006] In the first embodiment, the cooking appliance may comprise a main body having a front surface facing the user, a top plate provided on the upper part of the main body, at least one stove heating section provided on the top plate, a heating chamber provided inside the main body, and at least one heating chamber heating section provided in the heating chamber. The at least one stove heating section or the at least one heating chamber heating section may include a combustion heating section. The at least one stove heating section may include an induction heating section. The cooking appliance may further comprise an injection nozzle provided inside the main body for injecting fuel, a mixing pipe provided inside the main body and having an intake for taking in primary air along with the fuel injected from the injection nozzle, and supplying a mixed gas of the fuel and the primary air to the combustion heating section, a power control board provided inside the main body for controlling the power supplied to the induction heating section, and a cooling fan provided inside the main body for cooling the power control board. When the heating appliance is viewed from above in a plan view, the intake may be located to one side of the heating chamber in the left-right direction, and the power control board and the cooling fan may be located to the other side of the heating chamber. In this specification, "one side (right or left) of the heating chamber in the left-right direction" means being on one side (right or left) of the center of the heating chamber in the left-right direction, and "the other side (left or right) of the heating chamber in the left-right direction" means being on the other side (left or right) of the center of the heating chamber in the left-right direction.
[0007] In the above configuration, a heating chamber exists inside the main body between the intake and the cooling fan. Therefore, the operation of the cooling fan can suppress the generation of airflow near the intake and the fluctuation of air pressure near the intake, thereby suppressing the influence on the amount of primary air flowing into the intake. With this configuration, the operation of the cooling fan, which is provided in conjunction with the induction heating section, can suppress its influence on the combustion of the combustion heating section.
[0008] In the second embodiment, in the heating cooker of the first embodiment, the direction in which the fuel is injected from the injection nozzle to the intake may be different from the direction in which the cooling fan is directed toward the intake.
[0009] According to the above configuration, the direction of fuel injection at the intake, i.e., the direction of primary air inflow at the intake, is different from the direction from the cooling fan towards the intake. Therefore, when the cooling fan is driven, the influence on the amount of primary air inflow at the intake can be suppressed more effectively.
[0010] In a third embodiment, in the cooking appliance of the first or second embodiment, the at least one heating chamber heating section may include the combustion heating section.
[0011] According to the above configuration, in a cooking appliance in which at least one heating chamber heating section includes a combustion heating section, it is possible to suppress the effect of the operation of a cooling fan provided in conjunction with the induction heating section on the combustion of the combustion heating section.
[0012] In a fourth embodiment, in the cooking appliance of the first or second embodiment, the at least one stove heating section may include the combustion heating section.
[0013] According to the above configuration, in a cooking appliance in which at least one stove heating section includes a combustion heating section, the operation of a cooling fan provided in conjunction with the induction heating section can be suppressed from affecting the combustion of the combustion heating section.
[0014] In the fifth embodiment, in a cooking appliance of any one of the first to fourth embodiments, when the cooking appliance is viewed from above in a plan view, the induction heating section may be positioned on the other side of the heating chamber in the left-right direction.
[0015] With the above configuration, the induction heating unit, the power control board, and the cooling fan are all located on the same side. Therefore, the cooling fan can cool not only the power control board but also the induction heating unit.
[0016] In the sixth embodiment, in the cooking appliance of the fifth embodiment, the at least one stove heating section may further include another induction heating section. When the cooking appliance is viewed from above in a plan view, the other induction heating section may also be located on the other side of the heating chamber with respect to the left-right direction.
[0017] With the above configuration, the induction heating unit, another induction heating unit, the power control board, and the cooling fan are all located on the same side. Therefore, the cooling fan can cool not only the power control board but also the induction heating unit and the other induction heating unit.
[0018] In the seventh embodiment, a heating appliance according to any one of the first to sixth embodiments is provided inside the main body, and may further include a shielding plate that shields the space between the cooling fan and the heating chamber.
[0019] With the above configuration, the operation of the cooling fan can more effectively suppress the generation of airflow near the intake and the fluctuation of air pressure near the intake, and can more effectively suppress the impact on the amount of primary air flowing into the intake. [Brief explanation of the drawing]
[0020] [Figure 1] This is a perspective view of the heating appliance 2 of the embodiment. [Figure 2]Perspective cross-sectional view of the cooker burner 16 of the cooking appliance 2 of the embodiment. [Figure 3] Perspective view of the coil unit 62 and the substrate unit 64 of the cooking appliance 2 of the embodiment. [Figure 4] Longitudinal cross-sectional view of the coil unit 62 and the substrate unit 64 of the cooking appliance 2 of the embodiment. [Figure 5] Longitudinal cross-sectional view of the cooking appliance 2 of the embodiment. [Figure 6] Cross-sectional view of the heating chamber 32 of the cooking appliance 2 of the embodiment. [Figure 7] Perspective view of the upper burner 88 of the cooking appliance 2 of the embodiment. [Figure 8] Top view of the cooking appliance 2 of the embodiment with the top plate 6, the cooker burner 16, and the coil unit 62 removed. [Figure 9] Perspective view of the afterburner 94 of the cooking appliance 2 of the embodiment. [Figure 10] Top view of the cooking appliance 2 of the embodiment with the top plate 6 removed.
Mode for Carrying Out the Invention
[0021] (Embodiment) The cooking appliance 2 of this embodiment shown in Figure 1 is a built-in cooktop used in a system kitchen. The cooking appliance 2 comprises a main body 4 and a top plate 6. The main body 4 has a front surface 4a that is exposed on the front side of the system kitchen when the cooking appliance 2 is installed in the system kitchen, and a neck portion 4b that is positioned above and behind the front surface 4a and is not exposed on the front side of the system kitchen when the cooking appliance 2 is installed in the system kitchen. The top plate 6 is positioned on top of the main body 4 and is exposed on the countertop of the system kitchen when the cooking appliance 2 is installed in the system kitchen. In the following description, the front-rear direction and left-right direction of the cooking appliance 2 refer to the front-rear direction and left-right direction when the front side of the system kitchen is considered the front and the back side of the system kitchen is considered the rear. Therefore, please note that the front-rear direction and left-right direction of the cooking appliance 2 are different from the front-rear direction and left-right direction as seen from the perspective of the user using the cooking appliance 2.
[0022] The top plate 6 is provided with a first cooktop heating section 8, a second cooktop heating section 10, and a third cooktop heating section 12. The first cooktop heating section 8 is a combustion-type heating section that heats the food to be cooked using a fuel such as city gas as a heat source. The first cooktop heating section 8 is equipped with a trivet 14 on which a cooking container (for example, a pot) can be placed, a cooktop burner 16 that heats the cooking container placed on the trivet 14, and a pot bottom temperature sensor 18 that can detect whether or not a cooking container is placed on the trivet 14 and can also detect the temperature of the cooking container placed on the trivet 14. The second cooktop heating section 10 and the third cooktop heating section 12 are non-combustion-type heating sections that heat the food to be cooked using electricity as a heat source. The second stove heating section 10 includes a placement marker 20 indicating an area where a cooking container (e.g., a pot) can be placed, an induction heating coil 22 housed within the main body 4 for heating the cooking container placed on the placement marker 20, and a coil base 24 (see Figure 3) for holding the induction heating coil 22. The third stove heating section 12 includes a placement marker 26 indicating an area where a cooking container (e.g., a pot) can be placed, an induction heating coil 28 housed within the main body 4 for heating the cooking container placed on the placement marker 26, and a coil base 30 (see Figure 3) for holding the induction heating coil 28. In the cooking appliance 2, the heating capacity of the first stove heating section 8 is greater than that of the second stove heating section 10 and the third stove heating section 12. Also, the heating capacity of the second stove heating section 10 is greater than that of the third stove heating section 12.
[0023] A heating chamber 32 is provided inside the main body 4. The heating chamber 32 is, for example, a grill-type heating chamber. Food and cooking containers can be inserted into and removed from the heating chamber 32 through an opening 32a formed in the front surface 4a. The opening 32a is opened and closed by a door member 32b. The heating chamber 32 is connected to an exhaust port 6a provided at the rear of the top plate 6. Exhaust generated by cooking in the heating chamber 32 is discharged to the outside through the exhaust port 6a.
[0024] On the front surface 4a of the main unit 4, to the left of the door member 32b, there is a main power switch 33, a first cooktop operation knob 34, a second cooktop operation knob 35, a third cooktop operation knob 36, and a cooktop operation panel 37. The main power switch 33 receives the on and off operation of the main power of the cooking appliance 2. The first cooktop operation knob 34 receives the start and end operation of heating by the first cooktop heating unit 8, and the adjustment operation of the heating amount of the first cooktop heating unit 8. The second cooktop operation knob 35 receives the start and end operation of heating by the second cooktop heating unit 10, and the adjustment operation of the heating amount of the second cooktop heating unit 10. The third cooktop operation knob 36 receives the start and end operation of heating by the third cooktop heating unit 12, and the adjustment operation of the heating amount of the third cooktop heating unit 12. The cooktop operation panel 37 is a so-called kangaroo pocket type operation panel. As shown in Figure 1, the stove control panel 37 is normally closed, and when the user opens the stove control panel 37, a display unit (not shown) and an operation unit (not shown) are exposed. The display unit of the stove control panel 37 shows the operating status of the first stove heating unit 8, the second stove heating unit 10, and the third stove heating unit 12. The operation unit of the stove control panel 37 accepts operations to start and end automatic cooking using the first stove heating unit 8, the second stove heating unit 10, and / or the third stove heating unit 12, as well as setting operations for automatic cooking.
[0025] On the front surface 4a of the main unit 4, to the right of the door member 32b, there is a heating chamber operation knob 38 and a heating chamber operation panel 39. The heating chamber operation knob 38 accepts the start and end operations of heating by the heating chamber 32, and the adjustment of the heating amount of the heating chamber 32. The heating chamber operation panel 39 is a so-called kangaroo pocket type operation panel. As shown in Figure 1, the heating chamber operation panel 39 is normally closed, and when the user opens the heating chamber operation panel 39, a display unit (not shown) and an operation unit (not shown) are exposed. The display unit of the heating chamber operation panel 39 shows the operating status of the heating chamber 32, etc. The operation unit of the heating chamber operation panel 39 accepts the start and end operations of automatic cooking using the heating chamber 32, and setting operations for automatic cooking, etc.
[0026] As shown in Figure 2, the stove burner 16 includes a first intake 40, a first mixing pipe 42, a first mixing chamber 44, a plurality of first flame ports 46, a second intake 48, a second mixing pipe 50, a second mixing chamber 52, and a plurality of second flame ports 54. The first intake 40, the first mixing pipe 42, the second intake 48, and the second mixing pipe 50 are located below the top plate 6 (see Figure 1), i.e., inside the main body 4 (see Figure 1). The first mixing chamber 44 and the second mixing chamber 52 are arranged to penetrate the top plate 6 (see Figure 1) in the vertical direction. The plurality of first flame ports 46 and the plurality of second flame ports 54 are located above the top plate 6 (see Figure 1).
[0027] Fuel is injected into the first intake port 40 from the first injection nozzle 58. The fuel injected into the first intake port 40 from the first injection nozzle 58 flows into the first mixing pipe 42, drawing in the surrounding air as primary air. The fuel and primary air that flow into the first mixing pipe 42 become a mixed gas and flow into the first mixing chamber 44. The mixed gas that flows into the first mixing chamber 44 flows out from multiple first flame ports 46 and burns.
[0028] Fuel is injected from the second injection nozzle 60 into the second intake port 48. The fuel injected from the second injection nozzle 60 into the second intake port 48 flows into the second mixing pipe 50, drawing in the surrounding air as primary air. The fuel and primary air that flow into the second mixing pipe 50 become a mixed gas and flow into the second mixing chamber 52. The mixed gas that flows into the second mixing chamber 52 flows out from multiple second flame ports 54 and burns.
[0029] Corresponding to the second and third stove heating sections 10 and 12 shown in Figure 1, a coil unit 62 (see Figure 3) and a circuit board unit 64 (see Figure 3) are arranged inside the main body 4. As shown in Figure 3, the coil unit 62 includes a casing 66, an induction heating coil 22 (see Figure 1), a coil base 24, an induction heating coil 28 (see Figure 1), a coil base 30, and a cooling fan 68. Note that in Figures 3-10, the induction heating coils 22 and 28 are omitted from the illustration for clarity.
[0030] The casing 66 includes an intake passage 70, a housing space 72, and an exhaust passage 74. The coil bases 24 and 30 are located inside the housing space 72. As shown in Figure 4, the intake passage 70 is located below the front of the housing space 72. An intake port 70a opening forward is formed at the front of the intake passage 70, and the rear of the intake passage 70 communicates with the housing space 72 above. The intake port 70a communicates with a vent 4c (see Figure 1) formed in the neck portion 4b (see Figure 1) of the main body 4. The cooling fan 68 is located inside the intake passage 70. The cooling fan 68 may be, for example, a sirocco fan or another type of fan. As shown in Figure 3, the exhaust passage 74 is located at the rear of the housing space 72. The front of the exhaust passage 74 communicates with the housing space 72, and an exhaust port 74a opening upward is formed at the rear of the exhaust passage 74. The exhaust port 74a is connected to the exhaust port 6a of the top plate 6 (see Figure 1).
[0031] When heating is performed by the second stove heating section 10 or the third stove heating section 12, the induction heating coil 22 (see Figure 1) held in the coil base 24 and the induction heating coil 28 (see Figure 1) held in the coil base 30 become hot due to the repeated flow of large currents. For this reason, the coil unit 62 cools the induction heating coils 22 and 28 with a cooling fan 68. When the cooling fan 68 is driven, air flows into the intake passage 70 through the intake port 70a and flows from the intake passage 70 toward the containment space 72. The air that flows into the containment space 72 cools the induction heating coil 22 (see Figure 1) held in the coil base 24 and the induction heating coil 28 (see Figure 1) held in the coil base 30, and then flows from the containment space 72 toward the exhaust passage 74. The air that flows into the exhaust passage 74 is discharged through the exhaust port 74a.
[0032] As shown in Figure 4, the substrate unit 64 is located below the coil unit 62. The substrate unit 64 comprises a casing 76, power control boards 78 and 79, and a cooling fan 80. The casing 76 comprises an intake passage 82, a housing space 84, and an exhaust passage 86. The power control boards 78 and 79 are arranged side by side inside the housing space 84. The power control board 78 is electrically connected to the induction heating coil 22 (see Figure 1) and controls the power supplied to the induction heating coil 22. The power control board 78 comprises an inverter circuit 78a with multiple switching elements (e.g., IGBTs) and heat dissipation fins 78b to promote heat dissipation from the power control board 78. The power control board 79 is electrically connected to the induction heating coil 28 (see Figure 1) and controls the power supplied to the induction heating coil 28. The power control board 79 comprises an inverter circuit 79a with multiple switching elements (e.g., IGBTs) and heat dissipation fins 79b to promote heat dissipation from the power control board 79. The intake passage 82 is located below the storage space 84. An intake port 82a opening downwards is formed at the front of the intake passage 82, and the rear of the intake passage 82 communicates with the storage space 84 above. The intake port 82a communicates with a vent (not shown) formed at the bottom of the main body 4. The cooling fan 80 is located inside the intake passage 82. The cooling fan 80 may be, for example, a sirocco fan or another type of fan. The exhaust passage 86 is located behind the storage space 84. The front of the exhaust passage 86 communicates with the storage space 84, and an exhaust port 86a opening upwards is formed at the rear of the exhaust passage 86. The exhaust port 86a communicates with the exhaust port 6a (see Figure 1) of the top plate 6.
[0033] When heating is performed by the second stove heating section 10 and the third stove heating section 12, the inverter circuits 78a of the power control board 78 and 79a of the power control board 79 become hot due to the repeated flow of large currents. For this reason, the board unit 64 cools the power control boards 78 and 79 with a cooling fan 80. When the cooling fan 80 is driven, air flows into the intake passage 82 through the intake port 82a, and the air flows from the intake passage 82 toward the containment space 84. After the air that has flowed into the containment space 84 cools the power control boards 78 and 79, it flows from the containment space 84 toward the exhaust passage 86. The air that has flowed into the exhaust passage 86 is discharged through the exhaust port 86a.
[0034] When heating is performed by the second stove heating unit 10, the heat generated by the inverter circuit 78a is greater than the heat generated by the induction heating coil 22. Similarly, when heating is performed by the third stove heating unit 12, the heat generated by the inverter circuit 79a is greater than the heat generated by the induction heating coil 28. For this reason, in the cooking appliance 2, the airflow capacity of the cooling fan 80 (i.e., the cooling capacity of the cooling fan 80) is greater than the airflow capacity of the cooling fan 68 (i.e., the cooling capacity of the cooling fan 68).
[0035] Furthermore, when the cooling fan 80 is driven, not only are the power control boards 78 and 79 cooled, but the entire board unit 64 is cooled, so the coil unit 62 located near the board unit 64 is also cooled to a small extent, and the induction heating coils 22 and 28 (see Figure 1) are also cooled to a small extent. Similarly, when the cooling fan 68 is driven, not only are the induction heating coils 22 and 28 (see Figure 1) cooled, but the entire coil unit 62 is cooled, so the board unit 64 located near the coil unit 62 is also cooled to a small extent, and the power control boards 78 and 79 are also cooled to a small extent.
[0036] As shown in Figures 5 and 6, the heating chamber 32 comprises a first heating chamber heating section 87, a second heating chamber heating section 89, a third heating chamber heating section 91, and a fourth heating chamber heating section 93. The first heating chamber heating section 87 is equipped with an upper burner 88. The second heating chamber heating section 89 is equipped with a right-side lower burner 90. The third heating chamber heating section 91 is equipped with a left-side lower burner 92. The fourth heating chamber heating section 93 is equipped with an afterburner 94. As shown in Figure 5, the upper burner 88 is positioned above the interior of the heating chamber 32, extending in the front-rear and left-right directions, and heats the interior of the heating chamber 32 from above. As shown in Figure 6, the right-side lower burner 90 is positioned below and to the right of the interior of the heating chamber 32, extending in the front-rear direction, and heats the interior of the heating chamber 32 from below and to the right. The left lower burner 92 is positioned in the lower left of the heating chamber 32, extending in the front-to-back direction, and heats the inside of the heating chamber 32 from the lower left. As shown in Figure 5, the afterburner 94 is positioned at the rear of the heating chamber 32 and heats the exhaust gas that flows from the heating chamber 32 towards the exhaust port 6a of the top plate 6.
[0037] As shown in Figure 7, the upper burner 88 comprises an intake 96, a mixing tube 98, a mixing chamber 100, and multiple flame ports 102. As shown in Figure 8, the intake 96 is located outside the heating chamber 32. The mixing tube 98 is positioned to penetrate the heating chamber 32 from the outside to the inside. As shown in Figure 5, the mixing chamber 100 and the multiple flame ports 102 are located inside the heating chamber 32.
[0038] As shown in Figure 7, fuel is injected into the intake 96 from the injection nozzle 104. The fuel injected from the injection nozzle 104 into the intake 96 flows into the mixing pipe 98, drawing in the surrounding air as primary air. The fuel and primary air that flow into the mixing pipe 98 become a mixed gas and flow into the mixing chamber 100. The mixed gas that flows into the mixing chamber 100 flows out from multiple flame ports 102 and burns.
[0039] As shown in Figure 6, the right lower burner 90 includes an intake 106, a mixing tube 108, a mixing chamber 110, and multiple flame ports 112. Similarly, the left lower burner 92 includes an intake 114, a mixing tube 116, a mixing chamber 118, and multiple flame ports 120. As shown in Figure 5, the intakes 106 and 114 are located outside the heating chamber 32. The mixing tubes 108 and 116 are positioned to penetrate the heating chamber 32 from the outside to the inside. The mixing chambers 110 and 118 and the multiple flame ports 112 and 120 are located inside the heating chamber 32.
[0040] As shown in Figure 6, fuel is injected from the injection nozzle 122 into the intake 106 of the right lower burner 90. The fuel injected from the injection nozzle 122 into the intake 106 flows into the mixing tube 108, drawing in ambient air as primary air. The fuel and primary air that flow into the mixing tube 108 become a mixed gas and flow into the mixing chamber 110. The mixed gas that flows into the mixing chamber 110 flows out from multiple flame ports 112 and burns. Similarly, fuel is injected from the injection nozzle 124 into the intake 114 of the left lower burner 92. The fuel injected from the injection nozzle 124 into the intake 114 flows into the mixing tube 116, drawing in ambient air as primary air. The fuel and primary air that flow into the mixing tube 116 become a mixed gas and flow into the mixing chamber 118. The mixed gas that flows into the mixing chamber 118 flows out from multiple flame ports 120 and burns.
[0041] As shown in Figure 9, the afterburner 94 comprises an intake 126, a mixing tube 128, a mixing chamber 130, and multiple flame ports 132. As shown in Figure 8, the intake 126 is located outside the heating chamber 32. The mixing tube 128 is positioned to penetrate the heating chamber 32 from the outside to the inside. As shown in Figure 5, the mixing chamber 130 and the multiple flame ports 132 are located inside the heating chamber 32.
[0042] As shown in Figure 9, fuel is injected into the intake 126 from the injection nozzle 134. The fuel injected from the injection nozzle 134 into the intake 126 flows into the mixing pipe 128, drawing in the surrounding air as primary air. The fuel and primary air that flow into the mixing pipe 128 become a mixed gas and flow into the mixing chamber 130. The mixed gas that flows into the mixing chamber 130 flows out from multiple flame ports 132 and burns.
[0043] As shown in Figure 10, the stove burner 16 is positioned to the right of the heating chamber 32. In this embodiment of the cooking appliance 2, the upper part of the heating chamber 32 has inclined corners on both sides, and the stove burner 16 is positioned above the inclined right corner. However, in this specification, this positional relationship is also treated as being positioned to the right of the heating chamber 32. The first intake port 40 and the second intake port 48 of the stove burner 16 are both positioned to the right of the heating chamber 32. The first intake port 40 is positioned to face forward and downward, and the fuel injected from the first injection nozzle 58 into the first intake port 40 is injected upward and rearward. The second intake port 48 is positioned to face forward and downward, and the fuel injected from the second injection nozzle 60 into the second intake port 48 is injected upward and rearward.
[0044] As shown in Figure 8, the intake 96 of the upper burner 88 is located to the right of the heating chamber 32. More specifically, the intake 96 of the upper burner 88 is located above the inclined corner on the right side of the heating chamber 32. The intake 96 of the upper burner 88 is positioned to face forward, and the fuel injected from the injection nozzle 104 into the intake 96 is injected towards the rear.
[0045] As shown in Figure 6, the intake 106 of the right lower burner 90 is located to the right of the heating chamber 32. The intake 106 of the right lower burner 90 is positioned to face rearward, and the fuel injected from the injection nozzle 122 into the intake 106 is injected forward. The intake 114 of the left lower burner 92 is located to the left of the heating chamber 32. The intake 114 of the left lower burner 92 is positioned to face rearward, and the fuel injected from the injection nozzle 124 into the intake 114 is injected forward.
[0046] As shown in Figure 8, the intake 126 of the afterburner 94 is located to the right of the heating chamber 32. The intake 126 of the afterburner 94 is positioned to face to the right, and the fuel injected from the injection nozzle 134 into the intake 126 is injected to the left.
[0047] As shown in Figure 10, the coil unit 62 is positioned to the left of the heating chamber 32. More specifically, the coil unit 62 is positioned above the inclined left corner of the heating chamber 32. Therefore, the induction heating coils 22, 28 of the coil unit 62 (see Figure 1) and the cooling fan 68 of the coil unit 62 (see Figure 4) are positioned to the left of the heating chamber 32.
[0048] As shown in Figure 8, the substrate unit 64 is positioned to the left of the heating chamber 32. Therefore, the power control boards 78 and 79 (see Figure 4) of the substrate unit 64 and the cooling fan 80 (see Figure 4) of the substrate unit 64 are positioned to the left of the heating chamber 32. A shielding plate 136 is positioned inside the main body 4 to block the space between the heating chamber 32 and the substrate unit 64. The shielding plate 136 is a plate-shaped member that extends in the front-to-back and up-to-down directions. In the front-to-back direction, the shielding plate 136 extends from the front inner surface of the main body 4 to the rear inner surface of the main body 4. In the up-to-down direction, the shielding plate 136 extends from the lower inner surface of the main body 4 to the bottom surface of the coil unit 62 (see Figure 10). The shielding plate 136 may have a small gap between it and the front inner surface, rear inner surface, lower inner surface, and / or the bottom surface of the coil unit 62 of the main body 4.
[0049] (modified version) The heating chamber 32 may be an electric heating chamber equipped with a non-combustion heating element (e.g., a halogen heater or electric heating element) that uses electricity as a heat source to heat the food to be cooked. Alternatively, the heating chamber 32 may be an oven-type heating chamber.
[0050] The intake, mixing pipe, and injection nozzle may be shared between the right-side lower burner 90 and the left-side lower burner 92. In this case, for example, a common intake may be located in the same position and orientation as the intake 106 (see Figure 6) in the above embodiment, and a common injection nozzle may be located in the same position and orientation as the injection nozzle 122 (see Figure 6) in the above embodiment.
[0051] The power control boards 78 and 79 may be mounted as a single board rather than as separate boards.
[0052] The housing space 72 for the coil unit 62 and the housing space 84 for the circuit board unit 64 may be connected to each other so that the cooling air from the cooling fan 80 flows through the housing space 72 for the coil unit 62 and the housing space 84 for the circuit board unit 64, respectively. In this case, the coil unit 62 does not need to be equipped with a cooling fan 68.
[0053] (Features of the example) As described above, in one or more embodiments, the cooking appliance 2 comprises a main body 4 having a front surface 4a facing the user, a top plate 6 provided on the upper part of the main body 4, a first stove heating section 8, a second stove heating section 10, a third stove heating section 12 (an example of at least one stove heating section) provided on the top plate 6, a heating chamber 32 provided inside the main body 4, and a first heating chamber heating section 87, a second heating chamber heating section 89, a fourth heating chamber heating section 93 (at least one heating chamber heating section) provided in the heating chamber 32. The first stove heating section 8, the first heating chamber heating section 87, the second heating chamber heating section 89, and the fourth heating chamber heating section 93 each include a stove burner 16, an upper burner 88, a right-side lower burner 90, and an afterburner 94 (an example of a combustion heating section). The second stove heating section 10 (or third stove heating section 12) includes an induction heating coil 22 (or induction heating coil 28) (example of induction heating section). The cooking appliance 2 is further provided inside the main body 4 and has a first injection nozzle 58, a second injection nozzle 60, and injection nozzles 104, 122, 134 for injecting fuel, and a first intake port 40, a second intake port 48, and intake ports 96, 106, 126 provided inside the main body 4 for taking in primary air along with the fuel injected from the first injection nozzle 58, the second injection nozzle 60, and injection nozzles 104, 122, 134, and a mixed gas of fuel and primary air is used to cook The heating appliance 2 is equipped with a first mixing tube 42, a second mixing tube 50, and mixing tubes 98, 108, and 128 that supply power to the burner 16, upper burner 88, right lower burner 90, and afterburner 94, a power control board 78 (or power control board 79) located inside the main body 4 that controls the power supplied to the induction heating coil 22 (or induction heating coil 28), and a cooling fan 80 located inside the main body 4 that cools the power control board 78 (or power control board 79). When the heating appliance 2 is viewed from above in a plan view, the first intake 40, the second intake 48, and intakes 96, 106, and 126 are located to the right of the heating chamber 32 (one example), while the power control board 78 (or power control board 79) and the cooling fan 80 are located to the left of the heating chamber 32 (the other example).
[0054] In the above configuration, a heating chamber 32 exists inside the main body 4 between the first intake 40, the second intake 48, and the intakes 96, 106, 126 and the cooling fan 80. Therefore, the operation of the cooling fan 80 can suppress the generation of airflow near the first intake 40, the second intake 48, and the intakes 96, 106, 126, as well as fluctuations in the air pressure near the intakes 96, 106, 126, thereby suppressing the influence on the amount of primary air flowing into the first intake 40, the second intake 48, and the intakes 96, 106, 126. With this configuration, it is possible to suppress the operation of the cooling fan 80, which is provided in conjunction with the induction heating coil 22 (or induction heating coil 28), from affecting the combustion of the stove burner 16, the upper burner 88, the right lower burner 90, and the afterburner 94.
[0055] In one or more embodiments, the direction of fuel injection from the first injection nozzle 58, the second injection nozzle 60, and the injection nozzles 104, 122, 134 to the first intake 40, the second intake 48, and the intakes 96, 106, 126 is different from the direction of fuel injection from the cooling fan 80 toward the first intake 40, the second intake 48, and the intakes 96, 106, 126.
[0056] According to the above configuration, the fuel injection direction at the first intake 40, second intake 48, and intakes 96, 106, and 126, i.e., the direction of primary air inflow at the first intake 40, second intake 48, and intakes 96, 106, and 126, is different from the direction from the cooling fan 80 toward the first intake 40, second intake 48, and intakes 96, 106, and 126. Therefore, when the cooling fan 80 is driven, the influence on the amount of primary air inflow at the first intake 40, second intake 48, and intakes 96, 106, and 126 can be more effectively suppressed.
[0057] In one or more embodiments, the first heating chamber heating section 87, the second heating chamber heating section 89, and the fourth heating chamber heating section 93 include an upper burner 88, a right-side lower burner 90, and an afterburner 94.
[0058] According to the above configuration, the operation of the cooling fan 80, which is provided in conjunction with the induction heating coil 22 (or induction heating coil 28), can be suppressed from affecting the combustion of the upper burner 88, the right lower burner 90, and the afterburner 94.
[0059] In one or more embodiments, the first stove heating unit 8 includes a stove burner 16.
[0060] According to the above configuration, the operation of the cooling fan 80, which is provided in conjunction with the induction heating coil 22 (or induction heating coil 28), can be suppressed from affecting the combustion of the stove burner 16.
[0061] In one or more embodiments, when the cooking appliance 2 is viewed from above in a plan view, the induction heating coil 22 (or induction heating coil 28) is positioned to the left of the heating chamber 32 (an example of the other side) in the left-right direction.
[0062] With the above configuration, since the induction heating coil 22 (or induction heating coil 28), the power control board 78 (or power control board 79), and the cooling fan 80 are all located on the same side, the cooling fan 80 can cool not only the power control board 78 (or power control board 79) but also the induction heating coil 22 (or induction heating coil 28).
[0063] In one or more embodiments, the third cooktop heating section 12 (or the second cooktop heating section 10) further includes another induction heating coil 28 (or induction heating coil 22). When the cooker 2 is viewed from above in a plan view, the other induction heating coil 28 (or induction heating coil 22) is also located to the left of the heating chamber 32 (the other side example) in the left-right direction.
[0064] According to the above configuration, since the induction heating coil 22 (or induction heating coil 28), another induction heating coil 28 (or induction heating coil 22), the power control board 78 (or power control board 79), and the cooling fan 80 are all located on the same side, the cooling fan 80 can cool not only the power control board 78 (or power control board 79) but also the induction heating coil 22 (or induction heating coil 28) and the other induction heating coil 28 (or induction heating coil 22).
[0065] In one or more embodiments, the main body 4 may further include a shielding plate 136 provided inside the main body 4, which shields the space between the cooling fan 80 and the heating chamber 32.
[0066] According to the above configuration, the operation of the cooling fan 80 can more effectively suppress the generation of airflow near the first intake 40, the second intake 48, and the intakes 96, 106, and 126, as well as the fluctuation of air pressure near the first intake 40, the second intake 48, and the intakes 96, 106, and 126, thereby more effectively suppressing the impact on the amount of primary air flowing into the first intake 40, the second intake 48, and the intakes 96, 106, and 126.
[0067] Although each embodiment has been described in detail above, these are merely illustrative and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes to the specific examples illustrated above. The technical elements described in this specification or drawings exhibit technical usefulness individually or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Furthermore, the technology illustrated in this specification or drawings can achieve multiple objectives simultaneously, and achieving even one of these objectives itself constitutes technical usefulness. [Explanation of symbols]
[0068] 2:Heating cooker 4: Main unit 4a:Front 4b: Neck 4c: Ventilation opening 6: Tabletop 6a: Exhaust port 8: First stove heating section 10: Second stove heating section 12: Third burner heating section 14: Trivet 16: Stove burner 18: Pot bottom temperature sensor 20: Mounting Marker 22: Induction heating coil 24: Coil base 26: Mounting Marker 28: Induction heating coil 30: Coil base 32:Heating chamber 32a: opening 32b: Door component 33: Main power switch 34: First burner control knob 35: Second burner control knob 36: Third burner control knob 37: Cooktop control panel 38: Heating chamber operation knob 39: Heating chamber control panel 40:1st intake 42: 1st mixing tube 44: 1st mixing chamber 46: Multiple first flame ports 48:Second intake 50:Second mixing tube 52:Second mixing chamber 54: Multiple second flame ports 58: First injection nozzle 60: Second injection nozzle 62: Coil Unit 64: Circuit board unit 66: Casing 68: Cooling fan 70: Intake passage 70a: Air intake 72: Containment space 74: Exhaust passage 74a: Exhaust port 76: Casing 78: Power control board 78a: Switching element 78b: Heat dissipation fins 79: Power control board 79a: Switching element 79b: Heat dissipation fins 80: Cooling fan 82: Intake passage 82a: Air intake 84: Containment space 86: Exhaust passage 86a: Exhaust port 87: 1st heating chamber heating section 88: Top burner 89: 2nd heating chamber heating section 90: Right-side lower burner 91: Third heating chamber heating section 92: Left lower burner 93: 4th heating chamber heating section 94: Afterburner 96:Intake port 98:Mixing tube 100: Mixing chamber 102: Multiple flame ports 104: Spray nozzle 106:Intake port 108:Mixing tube 110:Mixing room 112: Multiple flame ports 114:Intake port 116:Mixing tube 118:Mixing room 120: Multiple flame ports 122: Spray nozzle 124: Spray nozzle 126:Intake 128:Mixing tube 130:Mixing room 132: Multiple flame ports 134: Spray nozzle 136: Shielding plate
Claims
1. A cooking appliance, A main body having a front facing the user, A top plate is provided on the upper part of the main body, The top plate is provided with at least one stove heating section, A heating chamber provided inside the main body, The heating chamber is provided with at least one heating chamber heating unit, The at least one stove heating section or the at least one heating chamber heating section includes a combustion heating section. The aforementioned at least one stove heating unit includes an induction heating unit, The aforementioned heating appliance further, An injection nozzle for injecting fuel is provided inside the main body, A mixing pipe is provided inside the main body and has an intake port for taking in primary air along with the fuel injected from the injection nozzle, and supplies the mixed gas of the fuel and the primary air to the combustion heating section. A power control board is provided inside the main body and controls the power supplied to the induction heating section, It is located inside the main body and is equipped with a cooling fan for cooling the power control board, A cooking appliance in which, when viewed from above in a plan view, the intake is located to one side of the heating chamber in the left-right direction, and the power control board and the cooling fan are located to the other side of the heating chamber.
2. The heating appliance according to claim 1, wherein the direction in which the fuel is injected from the injection nozzle to the intake is different from the direction in which the cooling fan is directed toward the intake.
3. The cooking appliance according to claim 1, wherein the at least one heating chamber heating section includes the combustion heating section.
4. The cooking appliance according to claim 1, wherein the at least one stove heating section includes the combustion heating section.
5. The cooking appliance according to claim 1, wherein, when the cooking appliance is viewed from above in a plan view, the induction heating section is positioned to the other side of the heating chamber in the left-right direction.
6. The aforementioned at least one stove heating unit further includes another induction heating unit, The cooking appliance according to claim 5, wherein, when the cooking appliance is viewed from above in a plan view, the other induction heating unit is also located on the other side of the heating chamber in the left-right direction.
7. The heating appliance according to claim 1, further comprising a shielding plate provided inside the main body, which shields the space between the cooling fan and the heating chamber.