JP4244952B2 - Induction heating cooker - Google Patents

Description

  The present invention relates to an induction cooking device having a roaster heating chamber.

  Conventionally, induction heating cookers having a roaster heating chamber are well known (see, for example, Patent Document 1).

4 and 5 show the induction heating cooker, which is configured to be used by being incorporated in a cabinet of a system kitchen. There is a top plate 1 for placing a pan or the like as a cooking utensil on the upper part of the main body, and under the top plate 1, two left heating coils 2a and a right heating coil 2b are placed in front of the left and right. . Also, a roaster heating chamber 3 is placed on the left side, an intermediate partition plate 4 is disposed on the right side of the roaster heating chamber 3, and a substrate holding plate for driving and controlling the heating coils 2a and 2b is further on the right side of the intermediate partition plate 4. The circuit board 6 supported by 5 is arranged. A cooling fan 7 is attached to the back of the circuit board 6, and these are housed in a main body outline 8. Further, the substrate holding plate 5 is provided with a first opening 9a on the roaster heating chamber 3 side and a second opening 9b on the right heating coil 2b side. Further, a vent hole 10 is provided in the partition plate 4 at a position facing the space of the bottom surface of the roaster heating chamber 3 and the main body outer shell 8. The outlet of the cooling fan 7 is directed to the circuit board 6, and outside air enters from the right rear of the top plate 1 as shown by the arrow, is sucked into the cooling fan 7, and the discharged air enters the circuit board 6. Then, the top plate 1 is cooled while cooling the circuit board 6 and then cooling each part from the left and right heating coils 2a and 2b and the vent 10 of the partition plate 4 through the lower outer bottom of the roaster heating chamber 3. It is the structure which discharges air from the left rear.
Japanese Patent No. 3613109

  However, in the above-described conventional configuration, the ventilating hole 10 is provided in the partition plate 4 at a position facing the space between the bottom surface of the roaster heating chamber 3 and the outer shell 8 of the main body, but the ventilating hole 10 is simply provided to feed the leaked air. If only a pair of left and right pull-out rails (not shown) are provided in order to smoothly extract the food to be cooked from the roaster heating chamber 3, it is difficult to sufficiently cool it. In particular, in that case, it becomes difficult to cool the leeward drawer rail (left side). Therefore, after the use of the roaster heating chamber 3, when the drawer rail is pulled out, it is necessary to cool it to a safe temperature even if the user touches the drawer rail.

  The present invention solves the above-mentioned conventional problems, and even if the user touches the drawer rail after use of the roaster heating chamber, the induction rail is cooled to a safe temperature, and the induction heating cooker is improved in safety. The purpose is to provide.

  In order to solve the above-described conventional problems, the induction heating cooker according to the present invention is provided below the roaster heating chamber with left and right drawer rails that are pulled out when the food is taken out of the roaster heating chamber, a roaster heating chamber, Provided between the drawer rails and a heat shield plate that shields the upper part of the drawer rail, and at the position facing the height at which the drawer rail below the heat shield plate of the inner partition plate in the main body outline is located, A partition plate opening hole is provided to allow cooling air to flow to the drawer rail.

  Accordingly, the cooling air is efficiently supplied to the drawer rail, and the drawer rail is cooled to a safe temperature in combination with the heat shielding action of the heat shield plate, thereby improving safety.

  The induction cooking device of the present invention can improve safety by improving the cooling of the drawer rail.

  According to a first aspect of the present invention, there are provided a main body outer shell constituting an outer shell, a top plate provided on an upper portion of the main body outer shell for placing an object to be heated, a heating coil disposed below the top plate, and a heating coil drive circuit. A plurality of circuit boards to be formed, a roaster heating chamber provided on one of the left and right sides in the outer shell of the main body, an upper partition plate separating the heating coil and the roaster heating chamber, and between the circuit board side and the roaster heating chamber A partition plate that is partitioned and a cooling fan that supplies cooling air to the heating coil and the roaster heating chamber through the circuit board are provided, and the lower portion of the roaster heating chamber is pulled out when taking out the food to be cooked from the roaster heating chamber. Left and right drawer rails, and a heat shield that is placed between the roaster heating chamber and the drawer rail to shield the upper part of the drawer rail, and is drawn below the heat shield of the middle partition plate. The cooling air can be efficiently supplied to the drawer rail by using an induction heating cooker provided with a partition plate opening hole that allows the cooling air to flow to the drawer rail at a position opposite the height at which the rail is located. Thus, in combination with the heat shielding action of the heat shield plate, the drawer rail is cooled to a safe temperature, and the safety can be improved.

  In the second invention, in particular, in the first invention, the heat shield plate wind direction plate is formed on the heat shield plate toward the opening of the intermediate partition plate, so that the drawer rail is cooled by the action of the heat shield plate wind direction plate. Wind can be sent efficiently, the temperature of the drawer rail can be reduced, and safety can be improved.

  According to a third aspect of the invention, in particular, in the first aspect, the wind guide is formed in the substrate holding plate opening hole of the substrate holding plate that accommodates the circuit board toward the inner partition plate opening hole. Cooling air can be efficiently sent to the drawer rail, the temperature of the drawer rail can be reduced, and safety can be improved.

  According to a fourth aspect of the present invention, in the first aspect of the invention, the intermediate partition plate wind direction plate is formed in the upper portion of the opening of the middle partition plate toward the drawer rail, so that the action of the intermediate partition plate wind direction plate causes the drawer rail to Cooling air can be sent efficiently, the temperature of the drawer rail can be reduced, and safety can be improved.

  According to a fifth invention, in particular, in the third or fourth invention, an upper middle partition plate opening hole is provided at a position facing the height above the drawer rail of the middle partition plate, and the upper middle partition plate opening of the substrate holding plate is provided. By providing the upper substrate holding plate opening hole at the position facing the hole, cooling air can be supplied from the upper middle partition plate opening hole and upper substrate holding plate opening hole, and the cooling rail temperature is reduced by a lot of cooling air And safety can be improved.

  According to a sixth aspect of the invention, in particular, in the first aspect of the invention, at least a part of the outlet of the cooling fan is opposed to the lowermost layer of the plurality of circuit boards so that the cooling fan is pulled out from the cooling fan. Cooling air can be efficiently sent to the rail, the temperature of the drawer rail can be reduced, and safety can be improved.

  In the seventh aspect of the invention, in particular, in the sixth aspect of the invention, the cooling fan is provided with the upper and lower outlets, so that the cooling air can be efficiently sent to the drawer rail, the temperature of the drawer rail is reduced, and safety is ensured. The cooling performance of the upper circuit board and the heating coil in the outer shell of the main body can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

(Embodiment 1)
1 and 2 show an induction heating cooker according to Embodiment 1 of the present invention. This induction heating cooker is configured to be used by being incorporated in a cabinet of a system kitchen.

  As shown in the figure, the induction heating cooker in the present embodiment includes a main body outer shell 12 that constitutes the outer shell, a top plate 11 that is provided on the upper portion of the main body outer shell 12 and places an object to be heated such as a pan, Heating coils 13a and 13b arranged below the top plate 11, a plurality of circuit boards 24 forming a drive circuit for the heating coils 13a and 13b, and a roaster heating chamber provided on one of the left and right sides of the main body outer shell 12 15, the upper partition plate 21 that partitions the heating coils 13 a and 13 b and the roaster heating chamber 15, the intermediate partition plate 22 that partitions the circuit board 24 side and the roaster heating chamber 15, and the heating coil 13 a through the circuit board 24, 13b and a cooling fan 25 for supplying cooling air to the roaster heating chamber 15 side.

  Below the roaster heating chamber 15 are left and right pull-out rails 16a and 16b for smoothly pulling out the food to be cooked from the roaster heating chamber 15, and the roaster heating chamber 15 and the pull-out rail. A heat shield plate 23 arranged between 16a and 16b to shield the upper side of the drawer rails 16a and 16b, and at a height at which the drawer rails 16a and 16b below the heat shield plate 23 of the intermediate partition plate 22 are positioned. At opposite positions, there are provided partition plate opening holes 29 for flowing cooling air to the drawer rails 16a and 16b.

  Here, in the present embodiment, one radial heater 14 is provided at the center back between the heating coils 13a and 13b.

  In addition, a roaster heating chamber 15 is placed on the left side of the main body shell 12 and below the heating coil 13a. A drawer rail 16a is disposed on the lower left side of the roaster heating chamber 15 above the bottom surface of the main body shell 12, and a drawer rail 16b is disposed on the lower right side. Are fastened to the rail fixing plate 17, and the rail fixing plate 17 is fastened to the bottom surface of the main body outer shell 12. The drawer rails 16a and 16b are composed of a fixed portion fastened to the rail fixing plate 17 and a movable portion that can move back and forth with respect to the fixed portion. It has been drawn out.

  Furthermore, the movable parts of the left and right drawer rails 16a and 16b are bound by a connection fitting 18 in front of the roaster heating chamber 15, and a door 19 with a handle of the roaster is attached to the connection fitting 18 by a mounting spring. The door 19 can be removed and cleaned as appropriate.

  In addition, the tray 20 accommodated in the roaster heating chamber 15 is hooked on the connection fitting 18 by the hook portion, and by pulling the handle of the door 19, the movable portions of the drawer rails 16a and 16b are pulled out, and the connection fitting 18 The saucer 20 hooked by is pulled out from the roaster heating chamber 15, and the saucer 20 can be removed upward.

  Further, the heat shield plate 23 has a size substantially equal to or larger than the projection surface of the bottom surface of the roaster heating chamber 15 and is between the roaster heating chamber 15 and the left and right pull-out rails 16a and 16b from above the pull-out rail 16b. It extends up. In addition, the heat shield plate 23 protrudes from the bottom surface of the main body outer shell 12 and is tightened so that a space exists between the bottom surface of the main body outer shell 12 and the heat shield plate 23. Further, the heat shield plate 23 is tightened so as to create a space between the bottom surface of the roaster heating chamber 15. In this configuration, the heat conduction is reduced by providing a slit at the tightening portion on the bottom surface of the roaster heating chamber 15, the heat shield plate 23, and the main body outer shell 12 and providing a slit. Further, a space is also formed between the left and right drawer rails 16 a and 16 b and the heat shield plate 23.

  The middle partition plate 22 is standing upright with the bottom surface fastened to the bottom surface of the main body outer shell 12, and the upper partition plate 21 bridges horizontally between the upper surface of the middle partition plate 22 and the left side surface of the main body outer shell 12. It is tightened and installed with a space with the roaster heating chamber 15. Therefore, the middle partition plate 22 and the upper partition plate 21 do not have a portion in contact with the roaster heating chamber 15.

  A circuit board 24 that supplies current to the heating coils 13a and 13b and controls driving is disposed on the right side of the roaster heating chamber 15 separated by the partition plate 22 and below the heating coil 13b. A cooling fan 25 for sending cooling air into the main body outer shell 12 in the vicinity of the circuit board 24 and an operation unit 26 for setting the heating operation are arranged on the front side of the circuit board 24. The heating coil 13b above the circuit board 24 is supported by a heating coil support 27 having a hole formed on the upper surface.

  Further, the circuit boards 24 are respectively accommodated in the board holding plate 28 and are stacked in three layers as three units individually. The board holding plate 28 surrounds the left and right side surfaces and the upper and lower sides of the circuit board 24, and the side facing the cooling fan 25 and the opposite side are open, and the side wall at a position facing the middle partition plate opening hole 29 of the middle partition plate 22. A substrate holding plate opening hole 30 is formed in the substrate.

  Further, a heat shield plate wind direction plate 31 is formed at the right end of the heat shield plate 23 toward the upper portion of the middle partition plate opening hole 29, and the middle partition plate is provided at least on the side surface and upper surface of the substrate holding plate opening hole 30 of the substrate holding plate 28. A wind guide 32 is formed by ribs toward the opening hole 29, and an intermediate partition plate wind direction plate 33 is formed at the upper part of the intermediate partition plate opening hole 29 of the intermediate partition plate 22 toward the drawer rails 16a and 16b.

  An intake port 34 is provided on the upper right side of the upper surface of the main body outer shell 12, and an exhaust port 35 is provided on the upper left side of the upper surface. The cooling fan 25 is disposed below the intake port 34 on the upper right side of the upper surface of the main body outer shell 12 and behind the circuit board 24. The cooling fan 25 has upper and lower ejection openings 36, and is configured such that at least a part of the cooling fan ejection opening 36 faces a position facing the lowermost layer of the circuit board 24. In the present embodiment, the ejection port 36 under the cooling fan 25 corresponds to this. In the present embodiment, a sirocco fan is used as the cooling fan 25.

  Next, the flow of cooling air from the cooling fan 25 will be described.

  First, outside air enters from the air inlet 34 provided behind the top plate 11, and the air discharged from the lower outlet 36 where a part of the cooling fan 25 faces the lowermost layer of the circuit board 24 is The heat generating components such as switching elements and diode bridges are sprayed toward the substrate 24 to cool them, and then formed on the side and upper surfaces of the substrate holding plate opening hole 30 of the substrate holding plate 28 from the substrate holding plate opening hole 30 by ribs. Along the wind guide 32, the air is blown into the opening hole 29 in the middle partition plate, and the direction of the wind is given along the inclination of the middle partition plate wind direction plate 33 toward the drawer rails 16a and 16b. 31 is inclined toward the drawer rails 16a and 16b, and is drawn into the space between the drawer rails 16a and 16b and the main body outer shell 12 below the heat shield plate 23, and the empty space is drawn into. Is as the space between the heat shield plate 23 under the main body outer shell 12, drawer rails 16a, 16b and the cooling, while escape laterally and rearward, the body outer shell 12 is cooled, and is discharged to the outside from the exhaust port 35.

  Air from the jet port 36 above and below the cooling fan 25 is blown toward the circuit board 24 of the substrate holding plate 28 and is divided into multiple layers from the first floor to the third floor. Cools heat-generating parts such as the diode bridge. After that, the air passing through the circuit board 24 is heated from the hole disposed on the upper surface of the heating coil support 27 provided on the uppermost floor, toward the opening of the board holding plate 28 on the opposite side of the cooling fan 25. The air is blown above the coil support 27, the cooling air flows from the heating coil 13b to the heating coil 13a and the outer body 12, and finally goes out from the exhaust port 35, forming a cooling air path. .

  In this way, the cooling air path needs to largely constitute the above-described two paths, and by providing the outlet 36 of the cooling fan 25 separately on the upper and lower sides as in the present embodiment, one jet Rather than forcibly dividing the wind from the mouth into two paths and making the ventilation worse due to airflow pressure loss, the wind can be blown into the two paths smoothly and the cooling air path can be formed efficiently. In particular, the cooling performance can be improved.

  In particular, in the present embodiment, the tray 20 can be removed when the drawer rails 16a and 16b are pulled out after the use of the roaster heating chamber 15, and the user removes the tray after use. The drawer rails 16a and 16b are exposed. Therefore, the temperature of the drawer rails 16a and 16b is sufficiently cooled in the outer shell 12 in advance so that it is safe for the user to touch the drawer rails 16a and 16b at any timing after using the roaster heating. It is necessary to keep.

  However, in the above configuration, the cooling air path to the drawer rails 16 a and 16 b is formed by providing holes in the substrate holding plate 28 and the inner partition plate 22, and the drawer rails 16 a and 16 are formed by the wind guide 32 and the wind direction plates 31 and 33. 16b and the heat shield plate 23 are sent to the lower side, particularly the cooling air to the left drawer rail 16a, which is difficult to cool on the leeward side, and the radiant heat from the roaster heating chamber 15 is shielded by the heat shield plate 23. The drawer rails 16a are guided through the heat shield plate below, and the drawer rails 16a and 16b can be cooled to about 60 degrees when drawn after roaster cooking. The drawer rails 16a and 16b are not particularly places where the upper temperature limit under the safety law is applied, but the temperature of 60 degrees is the temperature corresponding to the “push button” stipulated by the safety law. This is a temperature that can be interpreted as not immediately becoming unsafe.

  As described above, in the present embodiment, the cooling air is efficiently supplied to the extraction rails 16a and 16b from the opening hole 29 in the middle partition plate, so that the extraction rail is brought to a safe temperature in combination with the heat shielding action of the heat shielding plate 23. Safety can be improved by cooling 16a and 16b.

  In addition, the bottom surface of the main body outer shell 12 below the roaster heating chamber 15 is a lower part of the induction heating cooker incorporated according to the form of the kitchen when the built-in equipment as in the present embodiment is incorporated in the kitchen. When opened, there are many parts where the bottom is exposed because there is no partition in the kitchen, but the drawer rails 16a and 16b are cooled by the flow of the cooling air, and the bottom surface of the main body outer shell 12 is also cooled, so that the bottom surface of the main body outer shell 12 is exposed. Even if a hand touches the part, it can be used safely.

(Embodiment 2)
FIG. 3 shows an induction heating cooker according to Embodiment 2 of the present invention. The same elements as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in the figure, in addition to the configuration of the first embodiment, the induction heating cooker in the present embodiment has an upper middle partition plate at a position facing the height above the drawer rails 16a and 16b of the middle partition plate 22. An opening hole 37 is provided, and an upper substrate holding plate opening hole 38 is provided at a position facing the upper middle partition plate opening hole 29 of the substrate holding plate 28. Further, the upper middle partition plate opening hole 37 has a middle partition plate wind direction plate 33 similar to the middle partition plate opening hole 29. The heat shield plate wind direction plate 31 of the heat shield plate 23 is extended toward the middle partition plate opening hole 29 and the upper middle partition plate opening hole 37.

  In the present embodiment, in addition to the cooling air according to the configuration of the first embodiment, the cooling air can be supplied from the upper middle partition plate opening hole 37 and the upper substrate holding plate opening hole 38. , 16b can be reduced, and safety can be improved. At the same time, the bottom surface of the main body outer shell 12 is cooled, and even if the hand touches the exposed portion of the bottom surface of the main body outer shell 12, it can be used safely.

  As described above, since the induction heating cooker according to the present invention can improve safety by improving the cooling of the drawer rail, it can be applied to the use of a built-in induction heating cooker as well as a built-in type. .

The disassembled perspective view which shows the internal structure of the induction heating cooking appliance in Embodiment 1 of this invention. Sectional drawing which shows the internal structure of the induction heating cooking appliance Sectional drawing which shows the internal structure of the induction heating cooking appliance in Embodiment 2 of this invention The exploded perspective view which shows the internal structure of the conventional induction heating cooking appliance Sectional drawing which shows the internal structure of the induction heating cooking appliance

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Top plate 12 Body outline 13a, 13b Heating coil 15 Roaster heating chamber 16a, 16b Drawer rail 21 Upper partition plate 22 Middle partition plate 23 Heat shield plate 24 Circuit board 25 Cooling fan 28 Substrate holding plate 29 Middle partition plate opening hole 30 Substrate Holding plate opening hole 31 Heat shield plate wind direction plate 32 Wind guide 33 Middle partition plate wind direction plate 36 Ejection port 37 Upper middle partition plate opening 38 Upper substrate holding plate opening

Claims (7)

A main body outer shell constituting the outer shell, a top plate provided on the upper portion of the main body outer shell on which an object to be heated is placed, a heating coil disposed below the top plate, and a plurality of circuit boards forming a driving circuit for the heating coil A roaster heating chamber provided on one of the left and right sides of the outer shell of the main body, an upper partition plate that partitions the heating coil and the roaster heating chamber, and an intermediate partition plate that partitions the circuit board side and the roaster heating chamber A heating coil and a cooling fan for supplying cooling air to the roaster heating chamber side through the circuit board, and below the roaster heating chamber, left and right drawer rails that are drawn when taking out the food to be cooked from the roaster heating chamber, A heat shield plate is provided between the roaster heating chamber and the drawer rail to shield the upper part of the drawer rail. In a position opposite to the height of the induction heating cooker provided with the partition plate opening holes flow into the extracted cooling air rail. The induction heating cooker according to claim 1, wherein a heat shield plate wind direction plate is formed on the heat shield plate toward the opening of the middle partition plate. The induction heating cooker according to claim 1, wherein a wind guide is formed in the substrate holding plate opening hole of the substrate holding plate that accommodates the circuit board toward the middle partition plate opening hole. The induction heating cooker according to claim 1, wherein a windshield plate for the middle partition plate is formed at an upper portion of the opening hole of the middle partition plate toward the drawer rail. The upper middle partition plate opening hole is provided at a position facing the height above the drawer rail of the middle partition plate, and the upper substrate holding plate opening hole is provided at a position facing the upper middle partition plate opening hole of the substrate holding plate. The induction heating cooker according to 3 or 4. 2. The induction heating cooker according to claim 1, wherein at least a part of a cooling fan outlet is opposed to a lowermost layer of the plurality of circuit boards. The induction heating cooker according to claim 6, wherein the cooling fan is provided with an upper and lower outlet.