JP2005180801A - Induction heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently cool the inside of a cabinet without being affected by heat from a heater box. <P>SOLUTION: A partition wall 11 is provided in such a way as to surround the outer surface 1a of the heater box 1 opposite a sidewall 2a of the cabinet 2. The partition wall 11, the cabinet 2 and the heater box 1 together form an isolated space 12 that is isolated from the internal space of the cabinet 2. A solid-state relay 4 and a high-voltage capacitor 3 are positioned respectively on the right and left of the heater box 1. A cooling air passage does not pass through the isolated space 12 but through the solid-state relay 4 and the high-voltage capacitor 3 around the heater box 1, and leads to a fan 7. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a cooking device that performs cooking using a heater or a microwave.

  In a heating cooker that performs heater heating and microwave heating, a heater attached to a heating cabinet in a cabinet is covered with a heater box. The heater box does not expose the heater to the interior space of the cabinet. Therefore, the inside of the cabinet is not directly affected by the heat of the heater. However, the temperature of the outer surface of the heater box is increased by the heat of the heater.

  At the time of cooking, heat is generated not only from the heater but also from a control component for controlling the cooking. Due to the heat from such a heat source, the inside of the cabinet becomes hot. In order to reduce this thermal influence, cooling by a blower is performed inside the cabinet.

  For example, in the heating cooker of patent document 1, the ventilation path which reaches the exterior of a cabinet through the inlet of a cabinet, the inlet of a fan, the blower outlet of a fan, a control part, a heater box, and the exhaust of a cabinet is formed. First, the control component is cooled by cold air, and then the heater box and the wall surface of the cabinet are cooled.

  In this case, the arrangement of the components in the air passage is limited such that the control component is disposed closer to the intake port than the heater box and the heater box is disposed closer to the exhaust port than the control component. Moreover, the wall surface of the cabinet is cooled by the air heated by the control components and the heater box, but the cabinet cannot be sufficiently cooled.

  As shown in FIGS. 5 and 6, in a heating cooker having a structure in which the heater box 1 is arranged to face the side wall 2 a of the cabinet 2, a high-voltage capacitor 3 that is a control component, A state relay 4 and the like are arranged. In the figure, 5 is a heating cabinet, 6 is a door, and 7 is a blower.

In order to cool the heater box 1 and the control components that generate heat, an air inlet 8 is formed in the side wall 2a of the cabinet 2 as shown in FIG. The outer surface 1a of the heater box 1 faces the side wall 2a in which the air inlet 8 is formed. As shown in FIG. 8, the air sucked from the air inlet 8 by the drive of the blower 7 flows along the outer surface 1 a of the heater box 1, cools the control components, and then sucks into the air inlet 9 of the fan 7. Then, the air is exhausted from the exhaust port of the cabinet 2 to the outside.
JP-A-6-82046

  When arranged as shown in FIG. 7, the control components are located on the upstream side and the downstream side of the heat box 1 in the flow direction of the cooling air. The high-voltage capacitor 3 located on the downstream side of the heat box 1 is cooled by the air warmed by the heater box 1. Therefore, a sufficient cooling effect cannot be obtained.

  Further, since the air inlet 8 of the cabinet 2 is positioned opposite to the heater box 1, radiant heat from the heater box 1 is radiated to the outside of the cabinet 2 through the air inlet 8 as shown in FIG. 6. If there is a wall 10 or other cooking equipment on the outside of the cabinet 2, its surface temperature rises and is adversely affected by heat. Moreover, since the high-temperature air between the cabinet 2 and the wall 10 is sucked from the intake port 8, the cooling effect is further reduced.

  An object of this invention is to provide the heating cooker which can cool the inside of a cabinet efficiently, without receiving the influence of the heat from a heater box in view of the above.

  According to the present invention, a cabinet includes a heat source that generates heat during cooking, a cover member that covers the heat source, a control component for controlling the cooking, and a cooling fan. The air flow path is disposed opposite to the wall surface of the cabinet, and a ventilation path through which air for cooling the control component flows is formed in the cabinet, and an outer surface of the cover member facing the cabinet is isolated from the ventilation path. It is a thing.

  In order to isolate the outer surface of the cover member from the air passage, a partition wall that surrounds the outer surface of the cover member is provided. An isolation space isolated from the internal space of the cabinet is formed by the partition wall, the outer surface of the cover member, and the wall surface of the cabinet. A ventilation path is formed in the internal space. The air inlet of the ventilation path is formed avoiding the wall surface of the cabinet facing the outer surface of the cover member.

  That is, a heat source that generates heat during cooking is provided in the cabinet, and a cover member that covers the heat source is disposed to face the wall surface of the cabinet. Around the cover member, a control component for controlling cooking is arranged, and a partition wall is provided on the outer surface of the cover member facing the wall surface of the cabinet. An isolation space is formed between the cover member and the wall surface of the cabinet by the partition wall, and an air inlet is formed at a position avoiding a portion facing the isolation space on the wall surface of the cabinet. In the cabinet, a ventilation path is formed through the control part located around the cover member from the air inlet, the ventilation path and the isolation space are isolated, and a blower is arranged downstream of the control part of the ventilation path.

  As a result, the ventilation path does not pass through the outer surface of the cover member that becomes hot. Since the wind flowing through the ventilation path is not heated by the cover member, the control component is efficiently cooled by the cold wind. Further, the heat radiated from the cover member is blocked by the isolation space and is not radiated to the outside from the intake port. Therefore, the temperature rise of the wall surface of the cabinet facing the cover member can be reduced, and the temperature rise near the cabinet can be suppressed.

  According to the present invention, since the ventilation path is formed avoiding the cover member that generates heat, the temperature of the cooling air does not increase, and the inside of the cabinet can be efficiently cooled. Thus, since the ventilation path is not affected by the heat of the cover member, the components arranged in the ventilation path can be reliably cooled. Therefore, there is no restriction on the arrangement of parts, the degree of freedom of layout inside the cabinet is increased, and the space of the cabinet can be saved.

  The heating cooker of this embodiment is shown in FIGS. The cooking device is the same as a conventional cooking device that performs cooking using a heater and cooking using a microwave. The same reference numerals are given to the same constituent members as those in the prior art.

  A heater that is a heat source attached to the side surface of the heating chamber 5 is covered with a heater box 1 that is a cover member. The heater box 1 has a square box shape and is attached to the heating chamber 5. The outer surface 1 a of the heater box 1 faces the side wall 2 a of the cabinet 2, and there is a gap between the heater box 1 and the cabinet 2. A partition wall 11 is provided so as to surround the outer surface 1a.

  The partition wall 11 is formed in a square frame shape along the outer periphery of the heater box 1. The partition wall 11 is made of a cushioning material having elasticity, and is adhered to the outer surface 1a of the heater box 1 and is in close contact with the outer surface 1a and the side wall 2a of the cabinet 2. Accordingly, an isolation space 12 surrounded by the partition wall 11, the outer surface 1a of the heater box 1 and the side wall 2a of the cabinet 2 is formed. The isolation space 12 is a space isolated from the internal space of the cabinet 2 and functions as an air insulation layer.

  The internal space is a space around the heating chamber 5, and the control components such as the high voltage capacitor 3, the solid state relay 4, the control circuit board, the blower 7, and the like are disposed in this space. In this internal space, the solid state relay 4 is located on the front side and the high-voltage capacitor 3 is located on the back side across the heater box 1. The blower 7 is located on the back side of the heating chamber 5, and the suction port 9 is formed toward the front side. An exhaust port (not shown) is formed in the back wall of the cabinet 2.

  As shown in FIG. 3, an air inlet 8 is formed in the side wall 2 a of the cabinet 2 facing the heater box 1. The intake port 8 is not formed in the heat insulation region corresponding to the heater box 1 which is a region facing the isolation space 12 of the side wall 2a. The intake port 8 is located below and in front of the heat insulation region.

  A ventilation path is formed in the internal space of the cabinet 2 for cooling the heater box 1 that generates heat during cooking and the control components. The ventilation path passes from the intake port 8 to the side of the heating chamber 5, toward the back side, and reaches the exhaust port. The ventilation path is branched by the isolation space 12 and gathers again to reach the blower 7. The branched ventilation path becomes a path passing through the solid state relay 4 and a path passing through the high-voltage capacitor 3. Therefore, the intake port 8 is formed on the side far from the exhaust port, that is, on the lower side and the front side of the heat insulation region so as to be upstream of the ventilation path in the side wall 2a. The front intake port 8 leads to a path passing through the solid state relay 4, and the lower intake port 8 leads to a path passing through the high-voltage capacitor 3.

  The flow of wind during cooling in the above configuration will be described. As shown in FIG. 4, when the blower 7 is driven, outside air is sucked from the intake port 8. The wind from the intake port 8 located on the front side flows from the front side to the upper side along the heater box 1. At this time, the solid state relay 4 is cooled. The wind from the intake port 8 located on the lower side flows from the lower side to the back side along the heater box 1. At this time, the high voltage capacitor 3 is cooled. The air that has cooled these control components is sucked into the blower 7, and after cooling other components arranged on the downstream side of the blower 7, the air is exhausted to the outside through the exhaust port.

  Moreover, since it flows along the side surface of the heater box 1, the heater box 1 is also cooled. However, since the outer surface 1a of the heater box 1 that reaches the highest temperature is isolated from the ventilation path by the partition wall 11, the wind does not flow along the outer surface 1a. Therefore, the wind flowing through the ventilation path is not heated, and the control component can be efficiently cooled by the wind having a temperature close to the outside air.

  Moreover, since the control component does not become hotter than the heater box 1, the temperature rise of the wind after cooling the control component is small. Then, it can utilize as a wind for cooling other components located in the downstream of the air blower 7. FIG. As a result, the cooling efficiency is improved, so there is no need to use a large blower 7 or increase the air volume of the blower, and even the small blower 7 can be sufficiently cooled, and low power consumption can be achieved.

  The radiant heat radiated from the outer surface 1 a of the heater box 1 is insulated by the isolation space 12. The temperature rise of the side wall 2a of the cabinet 2 due to radiant heat is suppressed. In addition, since there is no air inlet 8 in the heat insulating region of the side wall 2a, the warmed air in the isolation space 12 does not leak outside. Therefore, even if there is a wall 10 or other cooking equipment in the vicinity of the side wall 2a, the temperature does not rise.

  In addition, this invention is not limited to the said embodiment, Of course, many corrections and changes can be added to the said embodiment within the scope of the present invention. A cylinder covering the outer periphery of the heater box may be provided, and the cylinder may be closely attached to the cabinet and the heating chamber. As a result, the cylinder becomes a partition, and the inside of the cylinder is isolated from the internal space of the cabinet, so that an isolation space can be formed.

  You may apply to the heating cooker only of the microwave heating without a heater. In this case, instead of the heater box, a cover member is provided so as to cover components for generating a high voltage such as a high voltage transformer. You may apply to the heating cooker by electromagnetic induction heating. In this case, the cover member covers a power supply device such as a heating coil or an inverter circuit.

The figure which looked at the inside of the cooking-by-heating machine of the present invention from the side Front view of the inside of the heating cooker Side view of heating cooker The figure which shows the flow of the wind inside a heating cooker View of the inside of a conventional cooking device as seen from the side Front view of the inside of a conventional cooking device Side view of a conventional cooking device The figure which shows the flow of the wind inside the conventional heating cooking appliance

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heater box 2 Cabinet 3 High voltage capacitor 4 Solid state relay 5 Heating chamber 7 Blower 8 Air inlet 11 Bulkhead 12 Isolation space

Claims (4)

The cabinet includes a heat generation source that generates heat during cooking, a cover member that covers the heat generation source, a control component for controlling the heating cooking, and a cooling fan. A ventilation path is formed in the cabinet so as to flow air for cooling the control component, and an outer surface of the cover member facing the cabinet is isolated from the ventilation path. A heating cooker. The cabinet includes a heat generation source that generates heat during cooking, a cover member that covers the heat generation source, a control component for controlling the heating cooking, and a cooling fan. A partition wall is provided opposite to the wall surface and surrounding the outer surface of the cover member, and an isolation space isolated from the internal space of the cabinet by the partition wall, the outer surface of the cover member, and the wall surface of the cabinet. A heating cooker characterized in that an air passage is formed in the internal space through which air for cooling the control component flows. The cooking device according to claim 1 or 2, wherein the air inlet of the ventilation path is formed to avoid the wall surface of the cabinet facing the outer surface of the cover member. A heat source that generates heat during cooking is provided in the cabinet, and a cover member that covers the heat source is arranged to face the wall surface of the cabinet, and a control for controlling the cooking around the cover member The partition is provided on the outer surface of the cover member that faces the wall surface of the cabinet, and an isolation space is formed between the cover member and the wall surface of the cabinet by the partition wall. An air inlet is formed at a position avoiding the portion facing the isolation space, and an air passage is formed in the cabinet from the air inlet to the control component located around the cover member. A heating cooker characterized in that it is isolated from the isolation space and a blower is disposed downstream of the control part of the ventilation path.

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