JP2017129295A - Heating cooking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that, in a conventional heating cooking device, there is provided a partition plate installed at a predetermined distance above a ceiling board of a heating chamber, a light source is installed on the upper surface of the partition plate, and a cylindrical light guide path is arranged between the partition plate and the ceiling board of the heating chamber to guide the light emitted from the light source to a translucent part through the light guide path, so that the light guide path is heated by radiation heat from the heating chamber and by the circumambient air of high temperature and becomes a high temperature and there is a possibility that heat from the light guide path is transmitted to the light source.SOLUTION: Between a light source and a translucent part, a cylindrical light guide path is provided for passage of the light emitted from the light source, and cooling air is made flow along the outer peripheral surface of the light guide path to cool the light guide path by the air.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a cooking device including a heating chamber such as a grill or an oven.

  In the cooking device provided with the heating chamber as described above, it is desired to visually check the cooking progress of the cooking object in the heating chamber during cooking. However, the heating cabinet is provided with a door that closes during cooking, and the inside of the heating cabinet must be observed through a small viewing window formed on the door, making it difficult to observe the object to be cooked. was there.

  Therefore, a translucent part in which a heat-resistant glass plate or the like is fitted is provided in the ceiling part of the heating chamber, and a light source such as an LED is further provided above the translucent part, and light emitted from the light source is transmitted through the translucent part. What irradiates the inside of a heating chamber, and illuminates the to-be-cooked object in a heating chamber is known (for example, refer patent document 1).

  By illuminating the object to be cooked with the light source in this way, the object to be cooked can be clearly seen even when looking through the viewing window of the door.

JP 2009-153723 A (FIG. 7)

  In the conventional cooking device described in Patent Document 1, a partition plate installed at a predetermined distance is provided above the ceiling plate of the heating cabinet, and a light source is installed on the upper surface of the partition plate. A cylindrical light guide is disposed between the partition plate and the ceiling plate of the heating cabinet, and the light emitted from the light source is guided to the light transmitting part through the light guide.

  For this reason, the light guide path is heated by the radiant heat from the heating chamber or the surrounding air that has become high temperature, and the heat from the light guide path may be transferred to the light source. Although the light source itself also generates heat when turned on, there is a problem in that the life of the light source is impaired when heat from the outside is transmitted and the light source is further heated. Although the problem that the light source is heated if the light source is separated from the heating chamber is solved to some extent, the illumination range by the light radiated from the light source into the heating chamber is narrowed, and the cooking object in the heating chamber becomes effective. It becomes impossible to illuminate.

  Then, this invention makes it a subject to provide the cooking apparatus which can illuminate the to-be-cooked object in a heating chamber in a wide range, and a light source does not become high temperature in view of said problem.

  In order to solve the above-mentioned problems, a heating cooking apparatus according to the present invention has a heating chamber for heating and cooking an object to be cooked therein, and a translucent portion is provided on the ceiling portion of the heating chamber, and the translucency is provided. In a heating cooking apparatus that irradiates light in a heating chamber through a light transmitting portion and illuminates an object to be cooked in the heating chamber, between the light source and the light transmitting portion. A cylindrical light guide path through which light emitted from the light source passes is provided, and cooling air is allowed to flow on the outer peripheral surface of the light guide path.

  The light guide path positioned between the light source and the heating chamber is easily affected by the heat from the heating chamber. Therefore, by flowing cooling air on the outer peripheral surface of the light guide path, the light guide path is air-cooled to suppress the influence of heat from the heating chamber to the light source.

  It is necessary to efficiently guide this cooling air to the outer peripheral surface of the light guide. Therefore, both the light source and the light guide are housed in a box-like body in which air flows in a fixed direction, and an air guide is provided to guide the air flow to the outer peripheral surface of the light guide. It is conceivable to use the air thus cooled as the cooling air.

  Further, when the light guide path is provided, the light source is separated from the heating chamber and the illumination range in the heating chamber is narrowed. Therefore, a storage portion that is recessed downward is formed at the bottom of the box-like body, and the light source and the light guide path are disposed in the storage portion so that the distance between the light source and the heating chamber is as close as possible. It is desirable to do.

  However, if the light guide path is disposed in the recessed storage portion in this way, it is difficult for cooling air to flow around the light guide path. Therefore, it is desirable to set the position of the upper end of the air guide portion to be higher than the position of the bottom portion of the box-like body so that a large amount of wind is guided by the air guide portion.

  As is clear from the above description, in the present invention, the light guide path is cooled by air, so that the light guide path does not reach a high temperature and the light source is not easily affected by heat. Therefore, it is possible to prevent the life of the light source from being reduced due to the high temperature.

External view of a gas stove incorporating the cooking device of the present invention The perspective view which shows the appearance of a heating cabinet, a heat shield, and an air cooling box III-III cross-sectional view showing the structure of the translucent part The perspective view which shows the external appearance of a light source unit Exploded perspective view showing the configuration of the light source unit VI-VI cross section showing the structure of the light source unit Sectional drawing which shows the flow of the air with respect to a light source unit

  With reference to FIG. 1, 1 is a gas stove, and the grill 2 which is a heating cooking apparatus by this invention is incorporated. The gas stove 1 is provided with a top plate 11 on the upper surface, and a grill 2 is provided below the top plate 11. Reference numeral 21 denotes a door of the grill 2, which is pulled out toward the front side, and an object to be cooked (not shown) is put in and out of the grill 2. In addition, the state of the to-be-cooked object accommodated in the inside is observed from a transparent viewing window 21 a provided on the door 21.

  Referring to FIG. 2, a box-shaped cooling box 3 in which a part that is weak at a relatively high temperature, such as a control board, is disposed below the top plate 11 and on the near side. Further, a heat shield plate 12 is disposed further below the cooling box 3, and a grill cabinet 22 serving as a heating chamber is disposed below the heat shield plate 12.

  The cooling box 3 has a rectangular parallelepiped shape that is long in the left-right direction, and a fan 31 that takes air into the cooling box 3 is provided at the right end. A part of the air sucked into the cooling box 3 by the fan 31 is blown forward from the front blowing port 33 or blown upward, but most of the air is blown from the exhaust port 32 provided at the left end. For this reason, in the cooling box 3, it is comprised so that the airflow from the right side to the left side may arise.

  In addition, a plate-shaped heat-resistant glass 5 that is a translucent part is attached to the ceiling of the grill cabinet 22.

  With reference to FIG. 3, an opening 24 is formed in the ceiling portion 23 of the grill cabinet 22, and the heat-resistant glass 5 is attached so as to cover the opening 24 from above. In the present embodiment, the heat-resistant glass 5 is used to illuminate the inside of the grill cabinet 22 by transmitting light from above, and an illumination unit for irradiating the illumination light is provided in the cooling box 3. It is attached to the bottom plate 4.

  4 to 6, 6 is an example of a lighting unit. In the illumination unit 6, an LED substrate 62 having a chip-like LED 62 a mounted on the lower surface is held in a space sandwiched between a base portion 64 and a lid portion 61, and light emitted from the LED 62 a is directed downward by a diffusion lens 63. Irradiates with a predetermined spread. The light diffused by the diffusing lens 63 passes through the conical cylindrical light guide 66. An air passage 67 is formed around the light guide path 66 so as to surround the light guide path 66. Reference numeral 65 denotes a wind guide portion for guiding the air flow to the air passage 67.

  Referring to FIG. 7, the illumination unit 6 is installed in a storage portion 42 provided on the bottom plate 4 of the cooling box 3. The storage portion 42 is formed to be recessed downward from the bottom portion 41 of the bottom plate 4 so as to be positioned immediately above the heat-resistant glass 5. Therefore, by installing the illumination unit 6 in the storage portion 42, the light irradiated from the illumination unit 6 passes through the heat-resistant glass 5 and illuminates the food to be cooked in the grill cabinet 22.

  In this manner, the storage unit 42 is recessed downward, so that the illumination unit 6 approaches the grill box 22, and as a result, the illumination range can be widened. However, if the lighting unit 6 is brought close to the grill cabinet 22, the lighting unit 6 is likely to become high temperature under the influence of heat from the grill cabinet 22.

  Therefore, air is flowed through the air passage 67 of the illumination unit 6 so that the light guide path 66 is mainly air-cooled. This air cooling air uses the air flow F flowing from the right to the left in the cooling box 3 by the fan 31. However, as described above, since the storage portion 42 is recessed downward, the air flow F Becomes difficult to flow into the air passage 67. Therefore, the air flow F is guided by the air guide portion 65 so as to flow to the air passage 67 so that a sufficient flow rate of air flows in the air passage 67. In addition, the front end of the air guide portion 65 was set to protrude above the bottom portion 41 of the bottom plate 4 by a dimension “d” so that the air guide portion 65 can sufficiently guide the air flow F.

  In addition, this invention is not limited to an above-described form, You may add a various change in the range which does not deviate from the summary of this invention.

DESCRIPTION OF SYMBOLS 1 Gas stove 2 Grill 3 Cooling box 4 Bottom plate 5 Heat-resistant glass 6 Illumination unit 11 Top plate 12 Heat shield plate 22 Grill box 31 Fan 32 Exhaust port 42 Storage part 63 Diffusing lens 65 Air guide part 66 Light guide path 67 Air path

Claims (4)

  It has a heating chamber that heats and cooks the food to be cooked inside, and a translucent part is provided on the ceiling of the heating chamber to transmit light from a light source provided separately from the translucent part. In the heating cooking apparatus that irradiates the cooking chamber in the heating chamber through the light section and illuminates the cooking object in the heating chamber, a cylindrical light guide path through which the light irradiated from the light source passes is provided between the light source and the translucent section. A heating cooking apparatus, characterized in that cooling air is allowed to flow through the outer peripheral surface of the light guide.   Both the light source and the light guide are housed in a box-like body in which air flows in a fixed direction, and a wind guide is provided to guide the air flow to the outer peripheral surface of the light guide and is guided by the wind guide. The cooking apparatus according to claim 1, wherein air is used as the cooling air.   3. The cooking apparatus according to claim 2, wherein a storage portion that is recessed downward is formed at the bottom of the box-like body, and the light source and the light guide are disposed in the storage portion.   The cooking apparatus according to claim 3, wherein the position of the upper end of the air guide portion is set to be higher than the position of the bottom portion of the box-shaped body.

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