JP5452692B2 - IH cooking heater - Google Patents

Description

  The present invention relates to an IH cooking heater.

  A conventional cooking device is disclosed in Japanese Patent Application Laid-Open No. 2008-171720 (Patent Document 1). As shown in FIGS. 11 and 12, the cooking device includes a casing 301, a heating chamber 302 disposed in a substantially central portion in the left-right direction in the casing 301, and an opening on the front side of the heating chamber 302. And a door 305 that opens and closes.

  An intake port 306 is provided on each of the left and right front portions of the bottom surface of the casing 301. The intake ports 306 are located on both sides of the door 305 so that cooling air enters the casing 301 from the intake ports 306.

  A partition plate 304 is provided between the heating chamber 302 and the top plate 303. On this partition plate 304, an induction heating coil 307, a drive circuit board 308, and a cooling fan unit 309 are mounted. The partition plate 304 is provided with a ventilation port 310.

  In such a conventional cooking device, air (cooling air) sucked from the air inlet 306 flows through the air passages 311 and 312 and then flows on the partition plate 304 through the air vent 310. Thereby, the induction heating coil 307 and the drive circuit board 308 are air-cooled.

  However, in the above-described conventional cooking device, since the air inlets 306 are provided on the left and right sides of the front part of the bottom surface of the casing 301, the length of each air inlet 306 in the left-right direction is shortened.

  As a result, there is a problem that the amount of air sucked from each of the intake ports 306 is small, and the cooling efficiency of the induction heating coil 307 and the drive circuit board 308 deteriorates.

JP 2008-171720 A

  Then, the subject of this invention is providing the IH cooking heater which can improve the cooling efficiency of a to-be-cooled object.

In order to solve the above problems, the IH cooking heater of the present invention is:
A casing,
A plurality of IH heaters provided on the top surface of the casing;
A heating chamber provided in the casing and having an opening on the front side;
A substrate provided in the casing and mounting an electronic component;
An operation unit provided on the front side;
An intake port and an exhaust port provided in the casing;
A fan for exhausting the air sucked from the intake port to the outside of the casing from the exhaust port;
With
The heating chamber is arranged on the left side or the right side of the casing,
The operation unit is arranged on the side opposite to the heating chamber,
The substrate is disposed on the operation unit side,
The exhaust port is disposed on the back side of the top surface and on the heating chamber side of the intake port,
The substrate is cooled by air sucked from the intake port and then exhausted from the exhaust port to the outside of the casing so as to flow toward the heating chamber.

In one embodiment of the IH cooking heater,
The substrate is cooled by the air sucked from the intake port, and then flows along the outer wall surface of the heating chamber.

In one embodiment, the IH cooking heater is:
A heating chamber exhaust port for discharging smoke in the heating chamber;
The heating chamber exhaust port is disposed in the vicinity of the exhaust port,
The air sucked from the intake port is discharged from the back side than the smoke discharged from the heating chamber exhaust port, and the smoke discharged from the heating chamber exhaust port is discharged so as to be guided upward rather than backward. The

  According to the IH cooking heater of the present invention, an electronic component mounted on a substrate can be air-cooled.

FIG. 1 is a schematic view of an installed state of an IH cooking heater according to an embodiment of the present invention. FIG. 2 is a schematic perspective view of the IH cooking heater. FIG. 3 is a schematic cross-sectional view of the IH cooking heater. FIG. 4 is a schematic front view of the door with the handle. FIG. 5 is a schematic bottom view of the handle door. FIG. 6 is a schematic rear view of the door with a handle. 7 is a schematic cross-sectional view taken along line AA in FIG. FIG. 8 is an enlarged view of a portion within a dotted circle in FIG. FIG. 9 is a schematic cross-sectional view taken along line BB in FIG. 10 is a schematic cross-sectional view taken along the line CC in FIG. FIG. 11 is a longitudinal sectional view of a conventional cooking device. FIG. 12 is a perspective view of a conventional cooking device with the upper part removed from the partition plate.

  Hereinafter, the cooking device of the present invention will be described in detail with reference to the illustrated embodiments.

  FIG. 1 is a schematic diagram showing an installation state of an IH (electromagnetic induction heating) cooking heater according to an embodiment of the present invention.

  The IH cooking heater 100 is housed in a cooking utensil recess 303 on the cabinet 301 of the system kitchen 300. The IH cooking heater 100 includes a casing 101 with a top plate 102 provided on the top. A single door 104 with a handle is attached to the front panel 103 of the casing 101.

  The top plate 102 is designed so that the surface thereof is substantially the same height as the surface of the top plate 302 of the system kitchen 300. A left IH heater 105A and a right IH heater 105B are provided on the front side of the top plate 102 at a predetermined interval. Further, a central IH heater 105 </ b> C is provided at the center in the left-right direction on the rear side of the top plate 102. In this embodiment, “front side” refers to the door 104 side with a handle, and “rear side” refers to the side opposite to the door 104 side with a handle. The left-right direction refers to a direction parallel to the front edge and the rear edge of the top plate 102. The door 104 with a handle is an example of a door.

  FIG. 2 is a schematic perspective view of the IH cooking heater 100 as viewed obliquely from above.

  As shown in FIG. 2, an intake port 106, an exhaust port 107, and an exhaust port 108 are provided in the vicinity of the rear edge of the top plate 102. As will be described later in detail, the exhaust port 107 is for exhausting excess steam in the heating chamber 109, and the exhaust port 108 is for exhausting air used for cooling the object to be cooled in the casing 101. belongs to.

  An opening 109a of the heating chamber 109 is provided on the left side of the front surface of the casing 101, and one end of the air passage 110 is opened below the opening 109a. On the other hand, a front operation panel 117 is provided on the right side of the front surface of the casing 101. Further, on the front surface of the casing 101, an opening 112 a of the storage portion 112 of the steam generator 111 is provided on the right side of the opening 109 a of the heating chamber 109. The air passage 110 is an example of a first air passage.

  In the heating chamber 109, a metal tray 122 on which an object 133 (see FIG. 7) is placed is accommodated. This tray 122 can be taken in and out of the heating chamber 109.

  The steam generator 111 includes a metal pot 113 to which a handle portion 115 is attached, a heat-resistant resin storage portion 112 for storing the pot 113, and a heater for heating the pot 113 stored in the storage portion 112. Unit 114, and generates steam to be supplied to the heating chamber 109. The pot 113 can be taken in and out of the storage unit 112, and if the water in the pot 113 decreases, the user can take out the pot 113 from the storage unit 112 and replenish the pot 113 with water.

  The door 104 with a handle is attached to the tip of a rail portion 116 that can slide in the front-rear direction with respect to the casing 101. As a result, as shown by the one-dot chain line in FIG. 2, the door 104 with handle is moved forward to expose the opening 109 a of the heating chamber 109 and the opening 112 a of the storage unit 112 of the steam generator 111. Can do. Further, as shown by a two-dot chain line in FIG. 2, the door with handle 104 is moved rearward so that the opening 109 a of the heating chamber 109 and the opening 112 a of the storage portion 112 of the steam generator 111 are connected to the door with the handle. 104. Instead of the handle-attached door 104, for example, a rotary door may be used as an example of the door.

  The front operation panel 117 is provided with a display unit 118 for displaying information related to the heating chamber 109 (for example, the temperature in the heating chamber 109) and an operation button 119 for controlling the heating chamber 109. The front operation panel 117 is of a so-called kangaroo pocket type and can be stored in the casing 101. The display unit 118 may be an LED (light emitting diode) display unit, a liquid crystal display unit, or a combination thereof.

  In FIG. 2, reference numeral 120 denotes a high-temperature caution lamp, and 121 denotes a top panel operation unit. The high-temperature caution lamp 120 blinks after the heating of the pot 113 is completed until the heater unit 114 that heats the pot 113 is lowered to about 60 degrees. On the other hand, although not shown, the top surface operation unit 121 includes a display unit that displays information on the left IH heater 105A, the right IH heater 105B, and the central IH heater 105C, and the left IH heater 105A, right IH heater 105B, and central IH heater. And an operation button for controlling 105C.

  FIG. 3 is a schematic cross-sectional view of the IH cooking heater 100 cut along a horizontal plane.

  The steam generator 111 is disposed between the heating chamber 109 and the drive circuit block 201. Further, between the heating chamber 109 and the drive circuit block 201, an air passage 123 extending along the outer wall on the side of the heating chamber 109 and facing the outer wall is provided. As the cooling fan 144 is driven, the air outside the casing 101 flows into the air passage 123 through the gap between the front panel 103 and the door 104 with handle, and flows toward the rear side of the casing 101. At this time, since the air from the gap passes through the storage portion 112, the pot 113 can be air-cooled. Although not shown, there is a gap in the side wall of the storage portion 112, and air can flow toward the rear side of the casing 101 through the gap. Here, the air passage 123 includes a space in the storage portion 112 in addition to a space facing the side wall of the heating chamber 109 on the steam generation device 111 side. The wind passage 123 is an example of a first wind passage.

  In addition, the connection portion 124 of the steam generator 111 communicates with the steam supply port 126 of the heating chamber 109 via a steam supply pipe 125. As a result, the steam generated in the steam generator 111 flows out from the connection part 124 and flows through the steam supply pipe 125, and then flows into the upper heater storage part 134 (see FIG. 7) from the steam supply port 126. Heated by a heater 135 (see FIG. 7) to become superheated steam.

  FIG. 4 is a schematic view of the door 104 with the handle as viewed from the front side (the side opposite to the heating chamber 109 side).

  A transparent heat resistant glass 128 and a handle 127 are integrally attached to the front surface of the door 104 with the handle.

  FIG. 5 is a schematic view of the door with handle 104 as viewed from below.

  A plurality of air inlets 129 are provided at a predetermined interval on the lower end surface of the door 104 with the handle. The shape of the air inlet 129 in a plan view is a rectangular shape, but may be a substantially elliptical shape or a substantially perfect circular shape. Further, the number and formation interval of the air inlets 129 are not limited to those shown in FIG. 5 and may be changed as appropriate. Further, at least one of the upper end surface, the right end surface, and the left end surface of the door 104 with a handle may be provided with one or a plurality of intake ports communicating with a plurality of exhaust ports 132 described later. Here, among the intake ports 129 on the upper end surface, the lower end surface, the right end surface, and the left end surface of the door 104 with a handle, the intake port 129 provided on the lower end surface draws air having the lowest temperature. Inhale efficiently. That is, the air inlet 129 on the lower end surface of the handle-equipped door 104 is suitable for sucking cooling air.

  FIG. 6 is a schematic view of the door 104 with the handle as viewed from the rear side (the heating chamber 109 side).

  A plurality of exhaust ports 132 communicating with the plurality of intake ports 129 are provided on the rear surface of the door 104 with the handle. A transparent heat-resistant glass 130 is attached to the rear surface of the door 104 with a handle so as to face the heat-resistant glass 128 on the front side. A packing 131 made of a heat-resistant resin is provided around the heat-resistant glass 130 on the rear side. When the door 104 with the handle is closed, the packing 131 comes into close contact with the peripheral edge of the opening 109 a of the heating chamber 109, so that superheated steam or the like in the heating chamber 109 leaks between the door 104 with the handle and the front panel 103. Can be prevented.

  In addition, four exhaust ports 143 that face the opening 112 a of the storage unit 112 of the steam generator 111 and communicate with the intake port 129 are provided on the rear surface of the door 104 with the handle. Here, the opening part 112a of the storage part 112 is a concept including not only the opening edge but also the inner space surrounded by the opening edge. Further, the number of the exhaust ports 143 may be a plurality other than four or a single number. Further, the shape of the exhaust port 143 is not limited to the shape shown in FIG.

  In addition, a predetermined gap is provided between the heat-resistant glass 128 on the front side and the heat-resistant glass 130 on the rear surface side, and the temperature of the heat-resistant glass 128 on the front side is hardly increased by the heat of the heating chamber 109. Yes. And although not shown in figure, between the heat resistant glass 130 of the rear surface side and the rear surface of the door 104 with a handle is sealed with heat resistant resin, and the oil from the to-be-cooked object 133 (refer FIG. 7) is heat resistant glass of the front surface side. Intrusion between 128 and the heat-resistant glass 130 on the rear surface side is prevented. In the present embodiment, the gap between the heat-resistant glass 128 on the front side and the heat-resistant glass 130 on the rear side is not communicated with the intake port 129, but may be communicated with the intake port 129. If the intake port 129 is communicated between the heat-resistant glass 128 on the front side and the heat-resistant glass 130 on the rear side, relatively low-temperature air taken from the intake port 129 can flow between them. The effect of suppressing temperature rise is increased.

  FIG. 7 is a schematic cross-sectional view taken along line AA in FIG. FIG. 8 is an enlarged view of a portion surrounded by a dotted circle in FIG.

  A wind passage 110 is provided in the casing 101 as shown in FIGS. The air passage 110 extends along the outer wall below the heating chamber 109 and faces the outer wall. Further, the opening end of the air passage 110 on the side of the door 104 with the handle is located near the exhaust port 132 and faces the exhaust port 132 as shown in FIG. 8 when the door 104 with the handle is closed. Further, the air passage 110 communicates with an air passage 123 (see FIG. 3) extending along the outer wall on the side of the steam generator 111 of the heating chamber 109.

  An upper heater storage part 134 is provided in the upper part of the heating chamber 109, and the upper heater 135 is disposed in the upper heater storage part 134. In addition, an upper cover 136 is attached to the lower end portion of the upper heater storage portion 134 so as to face the upper heater 135. The upper cover 136 has a plurality of holes 137 for ejecting superheated steam generated by the upper heater 135. Here, the said superheated steam means the steam heated to the overheated state of 100 degreeC or more.

  On the other hand, a lower heater storage part 138 is provided in the lower part of the heating chamber 109, and the lower heater 139 is stored in the lower heater storage part 138. The lower heater 139 is covered with a metal lower cover 140 so that oil or the like drops from the object to be cooked 133 and does not adhere to the lower heater 139.

  A steam supply port 126 that communicates with the space in the upper heater storage section 134 is provided at the upper portion of the side wall of the heating chamber 109 on the steam generating device 111 side. Further, a heat insulating material (not shown) is arranged around the heating chamber 109 to insulate the inside of the heating chamber 109 from the outside. And the smoke etc. which generate | occur | produced in the said heating chamber 109 are exhausted out of the casing 101 from the exhaust port 107. FIG. At this time, the smoke and the like pass through the deodorizing catalyst 142 in the exhaust duct 141, so that the smoke and the like can be deodorized.

  FIG. 9 is a schematic cross-sectional view seen from the line BB in FIG.

  A cooling fan 144 is disposed in the vicinity of the exhaust port 108. The cooling fan 144 is disposed on the downstream side of the air passage 110, and the air sucked from the air inlet 129 of the door 104 with the handle flows into the air passage 110 and is exhausted outside the casing 101 (see FIGS. 7 and 8). ). The cooling fan 144 is an example of a first fan. Further, instead of the cooling fan 144, for example, a cooling fan that can be arranged on the upstream side of the air passage 110 may be used.

  FIG. 10 is a schematic cross-sectional view taken along line CC of FIG.

  The drive circuit block 201 includes substrates 202A, 202B, and 202C on which electronic components 203A, 203B, and 203C for controlling the left IH heater 105A, the right IH heater 105B, the central IH heater 105C, and the like are mounted. The substrates 202A, 202B, 202C are arranged in the casing 101 so as to be aligned in the vertical direction. The lower substrate 202A faces the lower wind passage 204, and air flows from the rear side of the casing 101 toward the front side in the lower wind passage 204. The intermediate and upper substrates 202B and 202C face the upwind passage 205.

  In the downwind passage 204, after the air flows from the rear side to the front side of the casing 101, the air is cooled via the left IH heater 105A, the right IH heater 105B, and the central IH heater 105C. The air flowing through the lower wind passage 204 flows toward the left IH heater 105A, the right IH heater 105B, and the central IH heater 105C without passing through the upper wind passage 205.

  In the upwind passage 205, air flows from the rear side to the front side of the casing 101, then changes direction by the guide part 206 having a substantially arc-shaped cross section, and flows from the front side to the rear side of the casing 101. The air that has exited the lower wind passage 204 and the upper wind passage 205 is used for cooling the left IH heater 105A, the right IH heater 105B, and the central IH heater 105C. The downwind passage 204 and the upwind passage 205 are an example of a second wind passage.

  A cooling fan 145 is disposed upstream of the lower wind passage 204 and the upper wind passage 205. The cooling fan 145 sucks air from the suction port and blows out the air to the lower wind passage 204 and the upper wind passage 205. Thereby, the electronic components 203A, 203B, and 203C mounted on the lower, intermediate, and upper substrates 202A, 202B, and 202C can be air-cooled. The cooling fan 145 is an example of a second fan. In this embodiment, a sirocco fan is used as the cooling fan 145, but a fan such as an axial fan may be used.

  According to the IH cooking heater 100 configured as described above, when the cooling fan 144 is driven, as shown in FIG. 8, relatively cool air around the door 104 with the handle is sucked into the door 104 with the handle from the air inlet 129, It goes out of the door 104 with a handle from the exhaust port 132. Then, as shown in FIGS. 3 and 7, the air exiting from the exhaust port 132 flows through the air passage 110 and exits from the casing 101 through the exhaust port 108.

  Thus, since relatively cool air flows through the wind passage 110 around the door 104 with the handle, the outer wall below the heating chamber 109 can be actively air-cooled. Therefore, it is possible to prevent the lower surface of the casing 101 from becoming excessively hot due to the heat of the outer wall below the heating chamber 109.

  In addition, since a part of the air flowing through the wind passage 110 flows into the wind passage 123, it is possible to improve the cooling efficiency of the outer wall on the side of the steam generator 111 of the heating chamber 109.

  In addition, since the plurality of air inlets 129 are provided on the lower end face of the door 104 with a handle, it can be made invisible to the user when the door 104 with the handle is normally used. Therefore, the aesthetic appearance of the door 104 with a handle does not deteriorate, and the degree of freedom in designing the front surface of the door 104 with a handle can be increased.

  Further, since the plurality of intake ports 129 are provided on the lower end surface of the single door 104 with a handle, the total opening area of the plurality of intake ports 129 is increased. Therefore, the amount of air sucked from the plurality of air inlets 129 is large, and the cooling efficiency of the outer wall below the heating chamber 109 and the outer wall on the side of the steam generator 111 of the heating chamber 109 can be extremely increased. .

  In addition, the rear surface of the door 104 with the handle is provided with four exhaust ports 143 that face the opening 112a of the storage unit 112 of the steam generator 111 and communicate with the intake port 129. With the driving of 144, relatively cool air sucked from the intake port 129 can be sent to the pot 113 in the storage unit 112. As a result, the air cooling effect of the pot 113 can be enhanced, and the risk of a user being burned in the pot 113 can be reduced.

  The cooling fan 145 sucks air outside the casing 101 from the air inlet 106 on the rear side of the top plate 102 and blows it out toward the lower wind passage 204 and the upper wind passage 205. Accordingly, the lower substrate 202A is cooled by the air flowing through the lower wind passage 204, and the intermediate and upper substrates 202B and 202C are cooled by the air flowing through the upper wind passage 205. At this time, the air flowing through the upwind passage 205 is turned 180 degrees by the guide portion 206. However, since the guide portion 206 is formed in a circular arc shape, air pressure loss in the guide portion 206 can be reduced. it can. Therefore, the cooling efficiency of the intermediate and upper substrates 202B and 202C can be improved.

  Moreover, since the door 104 with a handle is a single door, the opening 109a of the heating chamber 109 can be opened and closed and the opening 112a of the storage unit 112 can be opened and closed simultaneously.

  In the above embodiment, the single door 104 with a handle is used. Instead of the single door 104 with a handle, for example, a door having a first door and a second door is used as an example of a door. May be. Here, the first door portion opens and closes the opening 109 a of the heating chamber 109. In addition, the second door portion is provided separately from the first door portion, and opens and closes the opening 112a of the storage portion 112 of the steam generator 111. When such a door having the first door portion and the second door portion is used, the opening portion 109a of the heating chamber 109 and the opening portion 112a of the storage portion 112 of the steam generator 111 are individually opened and closed. be able to.

  Further, although the exhaust port 143 on the rear surface of the door 104 with the handle communicates with the intake port 129, one or a plurality of intake ports are provided on the side surface or the upper end surface of the door 104 with the handle. You may make it communicate.

  Further, a through hole may be provided in the side wall of the casing 101 on the left IH heater 105A side. When this through hole is provided, air outside the casing 101 can be introduced into the casing 101 through the through hole, and the outer wall on the side opposite to the steam generator 111 side of the heating chamber 109 can be air-cooled.

  Further, a through hole communicating with a space on the outer wall above the heating chamber 109 and extending along the outer wall may be provided in the vicinity of the upper edge of the opening 109a of the heating chamber 109. When this through hole is provided, air near the upper edge of the opening 109a of the heating chamber 109 is introduced from the through hole into a space on the outer wall above the heating chamber 109 and extending along the outer wall. The outer wall above the heating chamber 109 can be air-cooled.

  In the above embodiment, the air flows in the order of the intermediate substrate 202B, the guide portion 206, and the upper substrate 202C. However, the air flows in the order of the upper substrate 202C, the guide portion 206, and the intermediate substrate 202B. It may be.

  In the said embodiment, although IH cooking heater was demonstrated as a heating cooker, a heating cooker is not restricted to this, You may apply this invention to heating cookers, such as a microwave oven. For example, the present invention may be applied to a heating cooker that cooks only with IH, a cooker that cooks only with superheated steam, or a cooker that cooks with IH and superheated steam.

  In the cooking device of the present invention, healthy cooking is performed by using superheated steam or saturated steam in cooking heaters (including those using an electric stove or gas stove such as an IH heater or electric heater) or a microwave oven. Can do. For example, in the cooking device of the present invention, superheated steam or saturated steam having a temperature of 100 ° C. or higher is supplied to the food surface, and the superheated steam or saturated steam adhered to the food surface is condensed to give a large amount of condensation latent heat to the food. So it can efficiently transfer heat to food. Moreover, when condensed water adheres to the food surface and salt and oil are dropped together with condensed water, salt and oil in the food can be reduced. Further, the inside of the heating chamber is filled with superheated steam or saturated steam, and becomes anoxic state, thereby enabling cooking while suppressing oxidation of food.

DESCRIPTION OF SYMBOLS 101 Casing 104 Door with a handle 109 Heating chamber 110,123 Air passage 111 Steam generator 129 Intake port 132 Exhaust port 144,145 Cooling fan 202A, 202B, 202C Substrate 203A, 203B, 203C Electronic component 204 Lower air passage 205 Upper air passage 206 Guide section

Claims (3)

A casing,
A plurality of IH heaters provided on the top surface of the casing;
A heating chamber provided in the casing and having an opening on the front side;
A substrate provided in the casing and mounting an electronic component;
An operation unit provided on the front side;
Air inlet provided in the casing, and exhaust port and the heating housing exhaust port,
A fan for exhausting the air sucked from the intake port to the outside of the casing from the exhaust port;
With
The heating chamber is arranged on the left side or the right side of the casing,
The operation unit is arranged on the side opposite to the heating chamber,
The substrate is disposed on the operation unit side,
The exhaust port is disposed on the back side of the top surface and on the heating chamber side of the intake port,
The heating chamber exhaust port is disposed in front of the exhaust port,
Disposing the fan below the exhaust port;
The air sucked from the intake port is discharged from the rear side rather than the smoke discharged from the heating chamber exhaust port, and the smoke discharged from the heating chamber exhaust port is exhausted so as to be guided upward rather than backward. IH cooking heater characterized by being made . 2. The IH cooking heater according to claim 1 , wherein the air sucked from the intake port is exhausted from the exhaust port to the outside of the casing so as to flow toward the heating chamber after cooling the substrate . 3. The IH cooking heater according to claim 1 , wherein the air sucked from the intake port flows along the outer wall surface of the heating chamber after the substrate is cooled . 4.