JP2011033231A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating cooker capable of improving cooling effect of connection terminals of electric components and cooling effect of connection wires connected to the connection terminals. <P>SOLUTION: An upper heater 26 having the connection terminals 26a, 26a, a lower heater 30 having the connection terminals 30a, 30a, an inside temperature sensor 42 having the connection terminal 42a, and a cooling fan 16 are disposed in a casing 1. An intake space 10 is defined at an upstream side of the cooling fan 16, and the air outside of the casing 1 flows into the intake space 10 and flows toward the cooling fan 16. At a downstream side of the cooling fan 16, an electric component chamber provided with electric components such as a water supply pump is disposed. The air blown off from the cooling fan 16 flows in the electric component chamber. In the intake space 10, the connection terminals 26a, 26a, 30a, 30a, 42a, and the connection wires 43, 44, 44, 45, 45 are disposed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cooking device.

  Conventionally, as a cooking device, there is one disclosed in Japanese Patent Application Laid-Open No. 2001-12748 (Patent Document 1). In this heating cooker, as shown in FIG. 9, a heating chamber 102 is disposed in the casing 101, and a space on one side of the heating chamber 102 is used as an electrical component chamber 103.

  The heating chamber 102 has an opening on the front side for taking in and out the food, and the opening is opened and closed by a door 104. An upper heater 105 is disposed in the upper space in the heating chamber 102, and a lower heater (not shown) is disposed below the heating chamber 102.

  The electrical components in the electrical component chamber 103 are cooled by a cooling fan 105. The cooling fan 105 sucks air outside the casing 101 from the intake port at the rear of the casing 101 and blows it out into the electrical component chamber 103. Further, although not shown in the figure, the electrical heater chamber 103 exposes connection terminals for the upper heater 105 and the lower heater. The connection wiring connected to the connection terminal is also exposed in the electrical component chamber 103.

  By the way, the connection terminals and connection wirings of the upper heater 105 and the lower heater are cooled by the air from the cooling fan 105 in the same manner as the electrical components in the electrical component chamber 103.

  However, the air from the cooling fan 105 cools the electrical components in the electrical component chamber 103 and cools the temperature before the connection terminals and connection wirings of the upper heater 105 and the lower heater are cooled. For this reason, the air from the cooling fan 105 cannot sufficiently cool the connection terminals and connection wirings of the upper heater 105 and the lower heater.

  That is, the conventional cooking device has a problem that the cooling effect of the connection terminals of the upper heater 105 and the lower heater is low, and the cooling effect of the connection wiring connected to the connection terminals is also low.

JP 2001-12748 A

  Then, the subject of this invention is providing the heating cooker which can make high the cooling effect of the connection terminal of an electrical component, and the cooling effect of the connection wiring connected to the connection terminal.

In order to solve the above problems, the heating cooker of the present invention is
A casing,
A heating chamber provided in the casing for heating the cooking object;
An electrical component disposed in the casing and having a connection terminal;
A connection wiring connected to the connection terminal of the electrical component;
A cooling fan disposed in the casing;
An upstream cooling path that is provided on the upstream side of the cooling fan, and flows outside the casing and flows toward the cooling fan;
Provided on the downstream side of the cooling fan, the air blown out from the cooling fan flows, and the downstream cooling path in which the electrical components to be cooled are disposed,
In the upstream cooling path, the connection terminal of the electrical component and the connection wiring are arranged.

  According to the heating cooker having the above configuration, when the cooling fan is driven, air flows from the outside of the casing into the upstream cooling path. In the upstream cooling path, connection terminals for electrical components are disposed, and connection wirings connected to the connection terminals are also disposed. As a result, air that has flowed into the upstream cooling path from outside the casing cools the connection terminals and the connection wiring of the electrical components, and then is sent to the downstream cooling path by the cooling fan.

  As described above, the connection terminal and the connection wiring of the electrical component are cooled by the air flowing through the upstream cooling path, but the temperature of the air has not increased before the cooled electrical component is cooled. The connection terminals and the connection wiring can be sufficiently cooled. As a result, it is possible to increase the cooling effect of the connection terminals and the connection wiring of the electrical component.

The cooking device of one embodiment is
An exhaust path for exhausting the gas in the heating chamber from the front side of the casing to the outside of the casing;
The upstream cooling path is provided on the rear side of the casing.

  According to the cooking device of the above embodiment, the gas in the heating chamber flows through the exhaust path and is exhausted from the front side of the casing to the outside of the casing. On the other hand, since the upstream cooling path is provided on the rear side of the casing, the air around the rear side of the casing flows into the upstream cooling path.

  Therefore, since the gas exhausted from the inside of the heating chamber can be prevented from flowing into the upstream cooling path, the cooling effect of the connection terminals and the connection wiring of the electrical components can be further enhanced.

In the heating cooker of one embodiment,
The electric component is a heater that heats an object to be cooked in the heating chamber.

  According to the heating cooker of the above embodiment, since the electric component is a heater for heating an object to be cooked in the heating chamber, the heater having a relatively large calorific value can be effectively cooled.

  According to the cooking device of the present invention, the upstream side cooling path provided on the upstream side of the cooling fan is provided with the connection terminals of the electrical components and the connection wirings connected to the connection terminals. Since the connection terminals and connection wirings of the electrical parts can be sufficiently cooled by the cold air before cooling the cooled electrical components in the downstream cooling path, the cooling effect of the connection terminals and connection wirings of the electrical parts is increased. be able to.

FIG. 1 is a schematic front view of a heating cooker according to an embodiment of the present invention. FIG. 2 is a schematic perspective view of the heating cooker as viewed from the front and obliquely above. FIG. 3 is a schematic perspective view of the heating cooker as viewed from the rear and obliquely above. FIG. 4 is a schematic perspective view of the heating cooker viewed from the side. FIG. 5 is a schematic perspective view of the heating cooker as viewed from the front and obliquely above. FIG. 6 is a schematic cross-sectional view of the cooking device cut along a vertical plane. FIG. 7 is a schematic cross-sectional view of the cooking device cut along a horizontal plane. FIG. 8 is a schematic rear view of the cooking device. FIG. 9 is a schematic cross-sectional view of a conventional cooking device.

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

  FIG. 1 is a schematic front view of a heating cooker according to an embodiment of the present invention.

  The heating cooker includes a casing 1 and a sliding door 2 with a handle that is attached to the front side of the casing 1. An operation panel 3 is provided on the front side of the casing 1 so as to be adjacent to the door 2 with a handle when closed. A dew receiver 4 is disposed below the operation panel 3.

  A dial 5 is rotatably attached to the operation panel 3. Further, the operation panel 3 has a liquid crystal display unit 7, and the liquid crystal display unit 7 performs display according to the operation of the dial 5.

  The dew receptacle 4 is a container that can be attached to and detached from the two front legs 6 and 6. The front legs 6 and 6 are provided on the front side of the bottom of the casing 1. When the dew receptacle 4 is attached to the front legs 6 and 6, a part of the dew receptacle 4 is positioned below the rear surface (back surface) of the door 2 with a handle when closed. Thereby, when the door 2 with a handle is opened, the dew on the rear surface of the door 2 with the handle drops into the dew receptacle 4.

  FIG. 2 is a schematic perspective view of the heating cooker from which the top and both sides of the casing 1 are removed as viewed from the front obliquely upward. Moreover, FIG. 3 is the schematic perspective view which looked at the heating cooker of FIG. 2 from back diagonally upward.

  In the casing 1, as shown in FIGS. 2 and 3, a heating chamber 8 for heating the cooking object is installed. In the casing 1, a space on the side of the heating chamber 8 and behind the operation panel 3 is an electrical component chamber 9, and a space behind the heating chamber 8 and behind the electrical component chamber 9 is an intake space 10. That is, the electrical component chamber 9 is provided on one side of the casing 1, while the intake space 10 is provided on the rear side of the casing 1. The intake space 10 is an example of an upstream cooling path, and the electrical component chamber 9 is an example of a downstream cooling path.

  The heating chamber 8 has an opening 8 a (see FIG. 5) on the front side, and the door 2 with a handle opens and closes the opening 8 a of the heating chamber 8. The object to be cooked is taken out from the heating chamber 8 or put into the heating chamber 8 through the opening 8 a of the heating chamber 8. Further, heat shield plates 11, 11,... Are arranged above, below, behind and on both sides of the heating chamber 8. That is, the heat shield plates 11, 11,... Are arranged around the heating chamber 8 except for the opening 8 a. Although not shown, the space between the heat shield plate 11 and the heating chamber 8 is filled with a heat insulating material. The gas in the heating chamber 8 is guided to the front side of the casing 1 through the exhaust path 12 and is exhausted from the front side of the casing 1 to the outside of the casing 1.

  In the electrical component chamber 9, a steam generator 13 that generates steam to be supplied to the heating chamber 8, a water supply pump 14 connected to the steam generator 13 via a water supply tube 20, and the water pump 14 There is a tank storage portion 15 arranged in front of the tank. When the cooking object is heated, air from the cooling fan 16 flows through the electrical component chamber 9 so that electrical components such as the water supply pump 14 can be cooled. The steam generator 13 and the feed water pump 14 are examples of the electrical components to be cooled.

  The intake space 10 is a space through which air around the rear side of the casing 1 flows from the four intake ports 17A, 17B, 17C, and 17D when the cooling fan 16 is driven. The air in the intake space 10 is sucked into the cooling fan 16 and blown out into the electrical component chamber 9. Note that each of the intake ports 17A, 17B, 17C, and 17D includes a plurality of slits provided at the rear portion of the casing 1.

  The exhaust path 12 includes a flexible synthetic resin exhaust tube 18 and a non-flexible synthetic resin exhaust duct 19 disposed on the side of the tank housing 15.

  The exhaust tube 18 is installed so as to extend from the upper rear side to the lower front side of the electrical component chamber 9. The rear end portion of the exhaust tube 18 is connected to the rear portion of the heating chamber 8, while the front end portion of the exhaust tube 18 is connected to the exhaust duct 19.

  The rear end of the exhaust duct 19 is open so that air from the cooling fan 16 flows into the exhaust duct 19.

  2 and 3 denotes a partition wall that partitions the electrical component chamber 9 and the intake space 10. A cooling fan 16 is attached to the partition wall 21.

  FIG. 4 is a schematic perspective view of the cooking device of FIG. 2 as viewed from the side.

  An exhaust / drain port 22 is provided at the bottom of the front side of the exhaust duct 19. The exhaust / drain port 22 passes through the bottom of the casing 1 and faces the dew receiver 4. Further, the exhaust duct 19 has a front end portion of the exhaust tube 18, and the opening of the front end portion of the exhaust tube 18 faces the exhaust and drain port 22 side.

  The tank storage unit 15 stores a water supply tank 23. As shown in FIG. 5, the front surface of the water supply tank 23 is exposed when the door 2 with a handle is opened, and can be taken in and out of the tank storage portion 15. Further, the water in the water supply tank 23 is supplied to the steam generator 13 through the water supply tube 20 by driving the water supply pump 14. The steam generator 13 heats the water from the feed water pump 14 with a steam generating heater 24 to generate water vapor.

  Moreover, when the door 2 with a handle is opened, the tray 40 on which the food item is placed is pulled out from the heating chamber 8. The front end portion of the tray 40 is detachably connected to the rear surface of the door 2 with a handle. Furthermore, a rail unit 41 is fixed to the rear surface of the door 2 with a handle. Rail unit 41 includes a fixed rail fixed in casing 1 and a movable rail slidable with respect to the fixed rail.

  FIG. 6 is a schematic cross-sectional view of the cooking device cut along a vertical plane. FIG. 7 is a schematic cross-sectional view of the heating cooker cut along a horizontal plane.

  As shown in FIGS. 6 and 7, an upper heater storage portion 25 is provided above the heating chamber 8, and the upper heater 26 is stored in the upper heater storage portion 25. The steam that has flowed into the upper heater housing portion 25 from the steam generator 13 is superheated by the upper heater 26 to become superheated steam. The upper heater 26 has two connection terminals 26 a and 26 a located in the vicinity of the intake port 17 </ b> A in the intake space 10. Here, the said superheated steam means the steam heated to the overheated state of 100 degreeC or more. The upper heater 26 is an example of an electrical component.

  The upper heater 26 is covered with a metal upper heater cover portion 27 from below. The upper heater cover portion 27 is a partition wall that separates a space that accommodates the upper heater 26 and a space that accommodates an object to be cooked. Further, the upper heater cover portion 27 functions as a radiation plate that is heated by the upper heater 26 to irradiate the food in the heating chamber 8 with radiant heat. The upper heater cover portion 27 is provided with a plurality of steam blowout holes 28, 28,. The superheated steam in the upper heater housing part 25 is blown out toward the food to be cooked on the tray 40 from the plurality of steam blowing holes 28, 28,.

  On the other hand, a lower heater storage portion 29 is provided below the heating chamber 8, and the lower heater 30 is stored in the lower heater storage portion 29. The lower heater 30 has two connection terminals 30 a and 30 a located in the vicinity of the intake port 17 </ b> B in the intake space 10. The lower heater 30 is an example of an electrical component.

  The lower heater 30 is covered with a metal lower heater cover 31 from above. Like the upper heater cover portion 27, the lower heater cover portion 31 is a partition wall and functions as a radiation plate, but does not have through holes such as a plurality of steam blowing holes 28, 28,. That is, the lower heater 30 is completely covered with the lower heater cover portion 31 and is not exposed to the space for accommodating the food. Thereby, the oil etc. which came out of the to-be-cooked material are dripped, and it does not adhere to the lower heater 30.

  An exhaust port 32 is provided at the rear of the heating chamber 8. The gas in the heating chamber 8 exits the heating chamber 8 from the exhaust port 32, and is exhausted out of the casing 1 from the front side of the casing 1 through the exhaust path 12.

  The exhaust path 12 includes a substantially rectangular plate-shaped catalyst 33, a substantially bottomed rectangular tube-shaped accommodating part 34 that accommodates the catalyst 33, and a guide path that guides the gas exhausted from the exhaust port 32 to the accommodating part 34. 35 and a connection path 36 through which the gas that has passed through the accommodating portion 34 flows.

  The catalyst 33 decomposes oil smoke passing through itself into water vapor and carbon dioxide, and removes odors of gas such as water vapor passing through the catalyst 33. That is, the catalyst 33 has a smoke removal function and a deodorization function. Such a catalyst 33 is obtained, for example, by adding palladium and platinum to a metal or ceramic. Further, the catalyst 33 is arranged at a predetermined distance from the bottom of the housing portion 34. Further, the catalyst 33 is in close contact with the side portion of the accommodating portion 34 over the entire circumference. This ensures that the gas from the guide path 35 passes through approximately half of the front side of the catalyst 33. At the same time, the gas that has passed through approximately half of the front side of the catalyst 33 surely passes through approximately half of the rear side of the catalyst 33.

  The housing portion 34 is provided in the upper heater housing portion 25 and is located above the heating chamber 8. In addition, a part of the upper heater 26 is located around the housing portion 34. Further, an intake port 37 that faces the rear half of the catalyst 33 and an exhaust port 38 that faces the front half of the catalyst 33 are provided at the upper end of the housing portion 34. On the other hand, the lower end of the accommodating part 34 is sealed. Further, a space S is provided between the lower end of the accommodating portion 34 and the catalyst 33. This space S is not in communication with the space in the upper heater storage section 25.

  The intake port 37 and the exhaust port 38 are partitioned by a partition plate 39. The partition plate 39 also partitions the guide path 35 and the connection path 36.

  The guide path 35 extends upward from the vicinity of the exhaust port 32, bends, further extends toward the front surface of the heating chamber 8, and is connected to the intake port 37 of the housing portion 34.

  The upstream end of the connection path 36 is connected to the exhaust port 38 of the housing portion 34, while the downstream end of the connection path 36 is connected to the exhaust tube 18. That is, the connection path 36 is a path that connects between the exhaust port 38 of the accommodating portion 34 and the exhaust tube 18.

  FIG. 8 is a schematic rear view of the cooking device.

  A chamber temperature sensor 42 that detects the temperature in the heating chamber 8 is attached to the rear portion of the heating chamber 8. This internal temperature sensor 42 has a connection terminal 42 a connected to the connection wiring 43. The internal temperature sensor 42 is an example of an electrical component.

  Connection wires 44 and 44 are connected to the connection terminals 26 a and 26 a of the upper heater 26, while connection wires 45 and 45 are connected to the connection terminals 30 a and 30 a of the lower heater 30.

  In the intake space 10, the connection terminals 26 a and 26 a of the upper heater 26, the connection terminals 30 a and 30 a of the lower heater 30, the connection terminal 42 a of the internal temperature sensor 42, and the connection wirings 43, 44, 44 and 45. , 45 are located. Further, no electrical components other than the upper heater 26 and the internal temperature sensor 42 are arranged in the intake space 10. In the intake space 10, connection terminals for electrical components other than the upper heater 26 and the internal temperature sensor 42, and connection wiring connected to the connection terminals are not arranged.

  According to the cooking device having the above configuration, when the cooling fan 16 is driven, the air around the rear portion of the casing 1 is sucked into the intake space 10 through the four intake ports 17A, 17B, 17C, and 17D. The air from the intake ports 17A, 17B, 17C, and 17D is connected to the connection terminals 26a and 26a of the upper heater 26, the connection terminals 30a and 30a of the lower heater 30, the connection terminal 42a of the internal temperature sensor 42, and the connection wiring. After cooling 43, 44, 44, 45, 45, it flows into the electrical component chamber 9 and cools the electrical components such as the water supply pump. Part of the air that has flowed into the electrical component chamber 9 is exhausted out of the casing 1 from the side of the casing 1 on the operation panel 3 side. The remaining air that has flowed into the electrical component chamber 9 passes through the upper and lower portions of the heating chamber 8 and is exhausted out of the casing 1 from the side of the casing 1 on the door with handle 2 side. At this time, the heat shield plates 11 and 11 above and below the heating chamber 8 are cooled.

  Thus, the connection terminals 26a and 26a of the upper heater 26, the connection terminals 30a and 30a of the lower heater 30, the connection terminal 42a of the internal temperature sensor 42, and the connection wirings 43, 44, 44, 45, and 45 Is cooled by relatively cool air immediately after being sucked from outside the casing 1. On the other hand, the electrical components in the electrical component chamber 9 are cooled by the relatively high temperature air whose temperature has been increased by cooling in the intake space 10.

  Therefore, the connection terminals 26a, 26a of the upper heater 26, the connection terminals 30a, 30a of the lower heater 30, the connection terminal 42a of the internal temperature sensor 42, and the connection wirings 43, 44, 44, 45, 45 are sufficiently cooled. can do.

  In addition, since the electrical components in the electrical component chamber 9 do not reach a higher temperature than the connection terminals 26a, 26a of the upper heater 26 and the connection terminals 30a, 30a of the lower heater 30, the temperature is reduced by cooling in the intake space 10. Even the relatively hot air that has risen can be sufficiently cooled.

  Further, since the connection terminals 26a, 26a of the upper heater 26, the connection terminals 30a, 30a of the lower heater 30 and the connection wirings 44, 44, 45, 45 can be sufficiently cooled, the connection wirings 44, 44, 45, 45 are used. An inexpensive heat resistant wire of 150 ° C. to 180 ° C. can be used. As a result, the manufacturing cost can be reduced.

  If the connection terminals 26a, 26a of the upper heater 26, the connection terminals 30a, 30a of the lower heater 30, and the connection wirings 44, 44, 45, 45 are arranged in the electrical component chamber 9, the connection wiring 44, An expensive 250 ° C. heat resistant wire must be used as 44, 45, 45.

  Further, since the gas in the heating chamber 8 flows through the exhaust passage 12 and is exhausted from the front side of the casing 1 to the outside of the casing 1, the temperature of the air around the rear portion of the casing 1 does not rise due to exhaust by the exhaust passage 12.

  Therefore, low-temperature air is supplied into the intake space 10 from the intake ports 17A, 17B, 17C, and 17D, the connection terminals 26a and 26a of the upper heater 26, the connection terminals 30a and 30a of the lower heater 30, and the internal temperature sensor The cooling effect of the 42 connection terminals 42a and the connection wirings 43, 44, 44, 45, 45 can be enhanced.

  In the above embodiment, in the intake space 10, the connection terminals 26a, 26a of the upper heater 26, the connection terminals 30a, 30a of the lower heater 30, the connection terminal 42a of the internal temperature sensor 42, and the connection wirings 43, 44, 44, 45, 45 are arranged in the intake space 10, but the connection terminals 26a, 26a of the upper heater 26, the connection terminals 30a, 30a of the lower heater 30, and the connection wirings 44, 44, 45, 45. And the connection terminal 42 a of the internal temperature sensor 42 and the connection wiring 43 may be disposed in the electrical component chamber 9.

  Further, the connection terminals 26 a, 26 a, 30 a, 30 a, the connection terminal 42 a, the connection wirings 43, 44, 44, 45, 45 are not arranged in the intake space 10, and other electrical components in the casing 1 are connected. You may make it arrange | position a terminal and the connection wiring connected to this connection terminal. However, since the connection terminals 26a, 26a, 30a, 30a are hotter than the connection terminals of other electrical components, at least the connection terminals 26a, 26a, 30a, 30a and the connection wirings 44, 44, 45, 45 are preferably arranged. In addition, the connection terminals 26a, 26a, 30a, 30a and the connection wirings 44, 44, 45, 45 are arranged in the intake space 10, and the connection terminals of other electrical components and the connection wirings connected thereto are not arranged. Is more preferable.

  In the above embodiment, the superheated steam is generated in the upper heater storage section 25 and this superheated steam is supplied into the heating chamber 8, but the superheated steam is also generated in the lower heater storage section 29. Superheated steam may be supplied into the heating chamber 8.

  The present invention can be applied not only to an oven range that uses superheated steam, but also to an oven that uses superheated steam, a cooking oven such as a range or an IH cooking heater, and an oven, a range, and an oven range that do not use superheated steam. Or it can apply also to heating cookers, such as an IH cooking heater.

  In the cooking device of the present invention, healthy cooking can be performed by using superheated steam or saturated steam in a cooking heater (including an electric stove such as an IH heater or an electric heater or a gas stove) or a microwave oven. it can. 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. Furthermore, the heating chamber is filled with superheated steam or saturated steam and becomes oxygen-free, thereby enabling cooking with reduced oxidation of food.

DESCRIPTION OF SYMBOLS 1 Casing 8 Heating chamber 9 Electrical component room 10 Intake space 12 Exhaust path 13 Steam generator 14 Water supply pump 26 Upper heater 30 Lower heater 26a, 30a, 42a Connection terminal 42 Internal temperature sensor 43, 44, 45 Connection wiring

Claims (3)

A casing,
A heating chamber provided in the casing for heating the cooking object;
An electrical component disposed in the casing and having a connection terminal;
A connection wiring connected to the connection terminal of the electrical component;
A cooling fan disposed in the casing;
An upstream cooling path that is provided on the upstream side of the cooling fan, and flows outside the casing and flows toward the cooling fan;
Provided on the downstream side of the cooling fan, the air blown out from the cooling fan flows, and the downstream cooling path in which the electrical components to be cooled are disposed,
The cooking device according to claim 1, wherein the connection terminal of the electrical component and the connection wiring are arranged in the upstream cooling path. The heating cooker according to claim 1, wherein
An exhaust path for exhausting the gas in the heating chamber from the front side of the casing to the outside of the casing;
The cooking device according to claim 1, wherein the upstream cooling path is provided on the rear side of the casing. The heating cooker according to claim 1 or 2,
The cooking device according to claim 1, wherein the electrical component is a heater that heats an object to be cooked in the heating chamber.

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