JP4517863B2 - Heating equipment - Google Patents

Description

  The present invention relates to a heating device such as a heating cooker used in a general home.

Conventionally, as this kind of heating equipment, that is, a heating cooker, by constructing a cooling air passage, the heating chamber that becomes high temperature in a balanced and efficient manner is cooled, and the cooling efficiency of the heating chamber is improved. A heating coil and a device that suppresses a temperature rise of a control device are known (see, for example, Patent Document 1).
JP 2002-190375 A

  However, while the conventional heating device can efficiently cool the heating chamber, the cooling air does not flow with respect to the door that opens and closes the opening of the heating chamber. Due to heat transfer from the door, the temperature of the door is likely to rise, and reducing the temperature of the door has been an issue.

  This invention solves the said conventional subject, and it aims at providing the heating apparatus which aimed at reduction of the temperature rise of the door which opens and closes the opening part of a heating chamber, and improved safety.

In order to solve the above-described conventional problems, a heating device of the present invention includes a main body that forms an outer shell, a heating chamber that is installed inside the main body and has an opening formed on the front surface of the main body, and a handle that opens and closes the opening. A door having an inner wall facing the opening, an outer wall facing the outside and an air layer formed between the inner wall and the outer wall, and a circuit board disposed around the heating chamber and provided with electronic components, A blower for generating a blowing pressure to send outside air as cooling air into the heating body to cool the circuit board and to discharge the cooling air to the outside of the body, along the periphery of the opening and a packing said provided a door-side to at least one of said body front side in order to seal the front panel and the door, the door, the introduction hole for circulating the air in the air layer in the inner wall and have a discharge hole, said guide The hole, the discharge hole, and the communication hole are provided so as to be positioned outside the packing when the door is closed, so that the cooling air from the blower device faces the introduction hole when the door is closed. A cooling air passage is formed so as to flow from the communication hole through the air layer to the main body through the communication hole facing the discharge hole .

  As a result, the outer wall of the door is not directly exposed to the heat in the heating chamber, and since new air always circulates in the air layer, the temperature rise in the air layer is suppressed, and the temperature rise in the door outer wall is reduced. Safety is improved.

  Also, a blower for sending external air into the main body is provided, the introduction hole and the discharge hole are opposed to the main body, and the communication hole for the cooling air by the blower is provided so as to face the introduction hole and the discharge hole. As a result, the air layer can be communicated with the cooling air passage in the main body when the door is closed, and the air layer forms a part of the cooling air passage by the blower. Cooling is possible, and the cooling effect of the door can be further enhanced.

  Further, a packing for sealing the door and the front surface of the main body along the periphery of the opening is provided on at least one of the door side and the front surface of the main body, and the introduction hole, the discharge hole, and the communication hole are provided when the door is closed. The cooling air leaking from the connecting portion of the introduction hole, the discharge hole and the communication hole is prevented from entering the heating chamber, and the influence on the temperature in the heating chamber is provided. And good cooking performance can be ensured.

  The heating device of the present invention suppresses heat transfer from the inside of the heating chamber to the outer wall of the door, and can improve safety by a configuration in which the temperature of the door does not increase even during heating.

The first invention includes a main body forming an outer shell, a heating chamber installed inside the main body and having an opening formed on the front surface of the main body, a handle for opening and closing the opening, an inner wall facing the opening, and an external surface Outside
A door having an air layer formed between a wall and the inner wall and the outer wall, a circuit board disposed around the heating chamber and provided with electronic components, and generating an air blowing pressure in the heating chamber main body. An air blower for sending the air as cooling air to cool the circuit board and discharge the cooling air outside the main body, and the door to seal the door and the front of the main body along the periphery of the opening and a packing provided on at least one of the the side body front side, the door may have a guide hole and a discharge hole for circulating the air in the air layer in front Symbol wall, the body, the By having a communication hole provided so as to face the introduction hole and the discharge hole, the introduction hole, the discharge hole and the communication hole are provided so as to be located outside the packing when the door is closed, With the door closed Heating device and the cooling air generated by serial blower is formed by the introduction hole and from said contact hole passing through the air layer via the outlet facing the communicating hole cooling air passage to flow into the body from the opposing formation As a result, the outer wall of the door is not directly exposed to the heat in the heating chamber, and since new air always circulates in the air layer, the temperature rise in the air layer is suppressed, and the temperature rise of the door outer wall is prevented. It can be reduced and safety is improved.

Also , a blower for sending external air into the main body is provided, the introduction hole and the discharge hole are opposed to the main body, and the communication hole for cooling air by the blower is provided so as to face the introduction hole and the discharge hole. As a result, the air layer can be communicated with the cooling air passage in the main body when the door is closed, and the air layer forms a part of the cooling air passage by the blower. Cooling becomes possible, and the cooling effect of the door can be further enhanced.

Further , a packing for sealing the door and the front surface of the main body along the periphery of the opening is provided on at least one of the door side and the front surface of the main body, and the introduction hole, the discharge hole, and the communication hole are provided when the door is closed. by providing to be positioned outside of the emissions, the introduction hole, the cooling air leaking from the connection portion between the discharge hole and the communication hole is prevented from entering the heating chamber, to a temperature in the heating chamber The influence can be eliminated and good cooking performance can be secured.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

( Reference form 1)
FIG. 1 and FIG. 2 show a cooking device used in a general household as a heating device in Reference Embodiment 1 of the present invention.

As shown in the figure, the main body 21 forming the outer shell is provided with a top heater portion 23 having an induction heating coil inside and a top surface formed of a ceramic plate 22 at the top thereof. An operation unit 26 provided with a liquid crystal type display unit 24 and an operation switch 25 is provided at the front part. It said body 21 inside the left half is constituted by the roaster unit 27 for cooking grilled fish and meat, the right half and the circuit board with many electronic components, the external air into the main body 21 The circuit unit 29 includes a blower 28 for cooling the feeding and induction heating coils and electronic components. A power switch 30 for turning on / off the main power supply of the cooking device is provided on the front surface of the circuit unit 29.

  A heating chamber 31 having an opening 36 formed on the front surface 35 of the main body 21 is installed in the roaster portion 27 inside the main body 21. This heating chamber 31 is for cooking by adding ingredients such as fish and meat, and inside this is a slidable tray 32 for receiving gravy such as fat from fish and meat, A heating heater 34 for heating the cooked food is provided, which includes a grill 33 for placing food, a sheathed heater, and the like.

Moreover, the opening part 36 of the heating chamber 31 is covered with a door 37 having a handle 38, and is configured to be opened and closed by operating the handle 38 in the arrow B direction. Door 37
Has a handle 39 integrally provided with a handle 38 and a transparent member 40 made of glass or the like disposed above the handle 39, and the handle 39 and the transparent member 40 form an outer wall 41. Yes. Further, a portion facing the opening 36 of the door 37 is provided with another transparent member 42 and a door member 43 formed of a sheet metal or the like for holding the transparent member 42. An inner wall 44 is formed by the door member 43. The outer wall 41 and the inner wall 44 are held upward by a door member 45, and an air layer 46 is formed between the outer wall 41 and the inner wall 44. The air layer 46 communicates with an introduction hole 47 provided below the handle 38 of the handle 39 and a discharge hole 48 provided in the door member 45 so that air flows through the inside by natural convection. . In addition, the tray 32 is connected to the door member 43 via a support fitting 49.

  About the cooking-by-heating machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  When the user puts the food in the heating chamber 31 and closes the door 37 to perform cooking, the temperature in the heating chamber 31 rises. A part of this heat is transmitted to the entire surface forming the heating chamber 31 and raises the temperature around the heating chamber 31. Since the air blower 28 generates air pressure, the pressure inside the main body 21 is increased, and if there is an opening or a ventilation path in the main body 21, the cooling air from the blower 28 is discharged outside the main body 21 through the opening or the air passage. To do. Therefore, the circuit board, the induction heating coil, the outer shell, and the like arranged around the heating chamber 31 are cooled to an appropriate temperature.

  However, although the outer wall 41 of the door 37 is a part where the user is highly likely to touch during cooking, the cooling air ventilation path by the blower 28 is not formed. The cooling is not performed.

Therefore, in the present reference, the door 37 is provided an air layer 46 between the outer wall 41 and inner wall 44 to form a further and introduction hole 47 provided below the handle 38 of the air layer 46 handle 39 It communicates with a discharge hole 48 provided in the door member 45. Accordingly, the air layer 46 is communicated with the outside air through the introduction hole 47 and the discharge hole 48, so that when the temperature of the door 37 rises, the air flows through the inside by natural convection. Therefore, the outer wall 41 of the door 37 is not directly exposed to the heat in the heating chamber 37, and since new air always circulates in the air layer 46, the temperature rise in the air layer 46 is suppressed, and even during cooking. The temperature of the door 37 is not increased and safety can be improved.

Moreover, in this reference form, a part of the outer wall 41 and the inner wall 44 of the door 37 is formed by the transparent members 40 and 42, and an air layer 46 through which the outside air flows is interposed between the transparent members 40 and 42. It has a configuration. For this reason, in spite of the structure which can confirm the inside of the heating chamber 31 from the outside, since the heat transfer from the inside is suppressed by the air layer 46, the temperature of the transparent member surface is reduced and safety is improved. Can do. Note that the entire outer wall 41 and inner wall 44 of the door 37 may be formed by the transparent members 40 and 42.

Further, the introduction hole 47 below the handle 38 is in the form of the reference, by the discharge hole 48 provided above the handle 38, resulting natural convection in the air layer 46 from the bottom to the top of the handle 38 Therefore, the temperature of the handle 37 that has a high possibility of being touched during cooking can be effectively reduced.

(Embodiment 1 )
3-5 has shown the heating cooker as a heating apparatus in Embodiment 1 of this invention. The same elements as those of the reference form 1 are denoted by the same reference numerals and the description thereof is omitted.

In the present embodiment, the difference from the reference embodiment 1 is that the introduction hole and the discharge hole are not provided in the handle 39 and the door member 45 but are formed in the inner wall 44. About others, it is the same as the reference form 1.

  As shown in FIG. 4, the door member 43 is provided with a packing 50 for sealing the door 37 and the main body front surface 35 along the periphery of the opening 36. Further, an introduction hole 51 for guiding cooling air from the blower 28 shown in FIG. 1 into the air layer 46 is introduced into the air layer 46 on the right outside of the packing 50. Discharge holes 52 are provided for discharging the cooled cooling air. A second packing 53 is provided around the introduction hole 51 and the discharge hole 52 to prevent the cooling air from leaking to the outside and to ensure introduction and discharge into the air layer 46.

  Next, in FIG. 5, a broken line drawn on the front surface 35 of the main body indicates a contact line of the packing 50 provided on the door member 43 shown in FIG. 4, and around the opening 36 when the door member 43 is closed. It becomes the sealing part 54 to seal. On the left and right outer sides of the seal portion 54 on the front surface 35 of the main body, there are provided communication holes 58 that respectively communicate with the introduction hole 51 and the discharge hole 52 shown in FIG. 4 when the door 37 is closed. This communication hole 58 communicates with the cooling air flow path of the blower 28 shown in FIG. 1, and when the door 37 is closed, the cooling air flows in the direction of the arrow from the communication hole 58 provided on the right side of the seal portion 54. After passing through the air layer 46 shown in FIG. 3, ventilation is formed so as to flow to the main body 1 from the communication hole 58 provided on the left side of the seal portion 54.

  About the cooking-by-heating machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  When the user puts the food in the heating chamber 31 and closes the door 37 to perform cooking, the temperature in the heating chamber 31 rises. A part of this heat is transmitted to the entire surface forming the heating chamber 31 and raises the temperature around the heating chamber 31. Since the air blower 28 generates air pressure, the pressure inside the main body 21 is increased, and if there is an opening or a ventilation path in the main body 21, the cooling air from the blower 28 is discharged outside the main body 21 through the opening or the air passage. To do. Therefore, the circuit board, the induction heating coil, the outer shell, and the like arranged around the heating chamber 31 are cooled to an appropriate temperature.

In the present embodiment, is provided a front panel 35 introduction hole 51 and discharge hole 5 2 on opposite sides to the door member 43, the front panel 35 side the contact hole 58 of the cooling air by the air supply device 28 since is provided as to face the introduction hole 51 and discharge hole 5 2, it is possible to communicate the air layer 46 to the ventilation path in the main body 21 in a state closing the door 37, the air layer 46 by blower 28 A part of the cooling air passage is formed, the door 37 can be cooled by forced convection, and the cooling effect of the door 37 can be further enhanced.

Further, in this embodiment, the introduction hole 51, since the provided on opposite sides of the discharge hole 5 2 and contact holes 58 in the closing direction of the door 37, respectively, the introduction hole 51 when closing the door 37, the discharge the connection between the hole 5 2 and contact hole 58 can be ensured. Thus, door 37 rather than by efficiency leakage into the cooling air of the outside is reduced is cooled.

Further, in this embodiment, the outside of the sealing portion 54 of the packing 50 and its packing 50 provided along the periphery of the opening 36, and introduction holes 51, the discharge hole 5 2 and contact holes 58 provided Therefore, it is possible to prevent the introduction hole 51, discharge hole 5 2 and contact hole 58 seal portion 54 from entering into the heating housing 31 of the cooling air leaking from the connecting portion between. Therefore, the cooling air does not affect the temperature in the heating chamber 31, and good cooking performance can be ensured.

  As described above, since the heating device according to the present invention cools the door using natural convection or forced convection, not only a heating cooker used in general households, but also a batch-type firing furnace It can also be applied to uses such as a heating device having a heating cabinet and an opening / closing door.

Embodiment 1 Reference of the present invention, external perspective view of the heating device in the first embodiment Longitudinal sectional view taken along line AA in FIG. The longitudinal cross-sectional view of the heating apparatus in Embodiment 1 of this invention Rear view of the door in the same heating device External perspective view showing the configuration of the vicinity of the opening of the heating chamber in the heating device

DESCRIPTION OF SYMBOLS 21 Main body 28 Blower 31 Heating chamber 35 Main body front surface 36 Opening part 37 Door 38 Handle 40, 42 Transparent member 41 Outer wall 44 Inner wall 46 Air layer 47, 51 Introduction hole 48, 52 Discharge hole 50 Packing 54 Seal part 58 Communication hole

Claims (1)

Body and, a heating chamber for the installed opening within said body to form on the front panel, the handle for opening and closing the opening, the inner wall facing the opening, an outer wall and the inner wall facing to the outside to form an outer shell And a door having an air layer formed between the outer wall, a circuit board disposed around the heating chamber and provided with electronic components, and generating air pressure to cool outside air in the heating chamber body the door side to the body for sealing the air blowing device for the circuit board feed as wind cooling discharging the cooling air to the outside of said body, said body front face and said door along the periphery of the opening A packing provided on at least one of the front side, the door has an introduction hole and a discharge hole for circulating air to the air layer in the inner wall, and the main body has the introduction hole and the discharge hole Contact established to face The introduction hole, the discharge hole, and the communication hole are provided so as to be positioned outside the packing when the door is closed, so that the cooling air by the blower device is closed when the door is closed. A cooling device in which a cooling air passage is formed so that the air flows from the communication hole facing the introduction hole through the air layer and flows from the communication hole facing the discharge hole to the main body .

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