JP2007187384A - Heat-resistant cover, and heater device or cooker therewith - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat-resistant cover uniforming a temperature distribution in a heating body so as not to generate baking unevenness, and to provide a heater device or a cooker therewith. <P>SOLUTION: This heat-resistant cover 13 has a top plate 13a covering a part above a lamp heater 11. In the top plate 13a, a peripheral part, i.e., a portion except a position opposite to a center part of the lamp heater 11 is formed with a plurality of holes 13d. Thus, by forming the plurality of holes 13d in the portion of the heat-resistant cover 13 becoming a comparatively low temperature, heat from the lamp heater 11 can be supplied to the heating body 3 thereabove through the holes 13d as it is. Accordingly, the temperature distribution in the heating body 3 becomes nearly uniform. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a heat-resistant cover and a heater device or cooking device provided with the same.

  The heating cooker is arranged in a box-shaped housing having an open top surface, a heating body such as a heating plate or a cooking pan that is detachably mounted on the top surface opening of the housing, and a heating body. A heater device for heating. An electric heater, which is a heating source of a heater device, generally has a configuration in which a heating element is arranged in an outer tube such as a glass tube or a metal tube, and connection terminals for the heating element are installed at both ends of the outer tube.

  In such a heating cooker, when water such as boiling juice spilled from the heating body falls to the lower heater device during cooking, the electric heater may be damaged.

Therefore, the present applicant has previously proposed a heater device in which a heat-resistant cover is provided above the electric heater (see Patent Document 1). According to this structure, even if moisture falls during cooking, it can be received by the heat-resistant cover, so that the electric heater can be protected. Further, the heat-resistant cover can emit far-infrared rays by being heated by radiant heat from the electric heater, and can supply radiant heat to the upper heating body.
JP 2005-287960 A

  However, since the electric heater has a structure in which heat is generated from the heating element, the heat-resistant cover is most heated at the position facing the heating element, and the temperature distribution can be biased between the surrounding area. A similar bias can be applied to the temperature distribution of the heating element heated by the radiant heat and exhaust heat generated from the heat-resistant cover having such a biased temperature distribution. Therefore, uneven baking occurred in the heating body.

  In view of the above, an object of the present invention is to provide a heat-resistant cover that makes the temperature distribution in the heating body uniform and does not cause uneven baking, and a heater device or heating cooker including the heat-resistant cover.

  In order to achieve the above object, the present invention is a heat-resistant cover that is provided in a heater device of a heating cooker and protects an electric heater that is a heating source of the heater device, and has a top plate that covers the upper portion of the electric heater. The heat-resistant cover is characterized in that a plurality of holes are formed in the periphery of the top plate, preferably around the position facing the heating element of the electric heater.

  The heat-resistant cover emits far-infrared rays when heated by radiant heat from the electric heater, and supplies radiant heat to the heating element. At this time, since the electric heater has a structure in which heat is generated from the heating element, the heat-resistant cover is most heated at a position facing the heating element. Compared to this, the portion of the heat-resistant cover that is away from the heating element without facing the heating element has a relatively low temperature. Therefore, the temperature distribution of the heat-resistant cover is biased.

  Therefore, a plurality of holes are formed in a portion of the heat-resistant cover that is at a relatively low temperature. That is, a plurality of holes are formed in the periphery of the top plate or around the position facing the heating element of the electric heater. In this way, at the portion of the heat-resistant cover that is at a relatively low temperature, far infrared rays are emitted by being heated by radiant heat or exhaust heat from the electric heater, and at the same time, heat from the electric heater is directly passed through the hole. It can supply to a heating body. Therefore, the heating body is heated almost uniformly over the entire surface, and the temperature distribution becomes substantially uniform.

  It is preferable that the diameter of the hole formed in the heat-resistant cover is 2 to 7 mm, and the interval between adjacent holes is 2 mm. If it is this range, the fallen object from a heating body will be difficult to pass a hole, and the radiant heat from an electric heater will be allowed to pass through and it can supply to an upper heating body. The shape of the hole is not limited to a circle, and examples thereof include a polygonal shape such as a triangle and a quadrangle, and a long hole shape.

  Examples of the material of the heat-resistant cover include a metal material that is heat-resistant and emits far-infrared rays when heated by an electric heater, but stainless steel materials that easily emit far-infrared rays are preferable.

  In a heater device in which an electric heater and a reflector disposed below the heater are provided in the heater device main body, the above heat-resistant cover is disposed above the electric heater with a space therebetween. Constitute. In addition, the heater device includes a box-shaped housing having an upper surface opened, and a heating cooker provided in the upper surface opening of the housing and a heating body such as a heating plate or a heating pan for cooking the food to be cooked. In, the cooking device is configured by being mounted on a support portion formed in the housing. The heat-resistant cover emits far-infrared rays when heated by the radiant heat from the electric heater, and supplies the radiant heat to the upper heating body. In addition, in the low temperature portion of the heat-resistant cover, heat from the electric heater can be supplied as it is to the upper heating body through the hole. It is possible to provide a heater device or a heating cooker in which the temperature distribution in the heating body is substantially uniform.

  As described above, according to the present invention, since the plurality of holes are formed in the relatively low temperature portion of the heat-resistant cover, the heat from the electric heater can be supplied to the upper heating body as it is through the holes. Therefore, the heating body is heated almost uniformly over the entire surface, and the temperature distribution becomes substantially uniform. Uneven baking can be prevented.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a side sectional view showing an embodiment of a heating cooker according to the present invention, FIG. 2 is an exploded perspective view of the heating cooker, FIG. 3 is an exploded perspective view of a heater device mounted on the heating cooker, and FIG. FIG. 5 is a front sectional view of the heater device, and FIG. 5 is a view showing the heater device. FIG. 6A is a plan view, FIG. 5B is a sectional view taken along line AA, and FIG.

  As shown in FIGS. 1 and 2, the heating cooker 1 according to the present embodiment includes a box-shaped housing 2 having an upper surface opened, a heating plate or a heating plate that is detachably mounted on the upper surface opening of the housing 2. A heating body 3 such as a pan, a heater device support portion 4 formed in the housing 2, a heater device 5 as a heating means mounted on the support portion, and a housing below the heater device support portion 4 A drain pan support portion 6 formed in the body 2, a drain pan 7 mounted on the drain pan support portion 6, and an operation unit 8 provided below the drain pan support portion 6 are provided. The drain pan 7 can be pulled out from the front surface of the housing 2.

  The heating body 3 includes a heating plate and a cooking pan. Examples of the heating plate include a takoyaki plate, a large-format plate, an okonomiyaki plate, a teppanyaki plate, a plate with a lid for cooking shumai and gyoza grill, a plate for cooking grilled rice balls, grilled salmon, and mitarashi. Examples of cooking pots include cooking pots for boiling noodles and oden pots for cooking and keeping oden. FIG. 2 illustrates a takoyaki plate 4.

  A receiving portion 9 that receives the above-described heating body 3 is formed on the periphery of the upper surface opening of the box-shaped housing 2 so that the heating body 3 can be supported.

  A rod-like heater device support portion 4 that supports the heater device 5 is provided between the left and right side walls at an upper position inside the housing 2. The position of the heater device support 4 is set so that a space is formed between the heat-resistant cover 13 located above the heater device 5 and the heating body 3 so that the heater 3 can be heated efficiently and uniformly. ing.

  As shown in FIG. 3 and FIG. 4, the heater device 5 is disposed in the heater device body 10 as a lamp heater 11 as an electric heater for heating the heating element 3, and below the lamp heater 11. A reflector 12 for reflecting radiant heat below 11 and guiding it upward; a heat-resistant cover 13 disposed above the lamp heater 11 and protecting the lamp heater 11 from moisture such as boiled juice falling from the heater 3; These are combined and unitized. Thus, if the unitized thing is used, it can incorporate in the heating cooker 1 easily.

  The heater device body 10 includes a flat plate-like lower cover 10a and box-shaped heater stopper support portions 10b attached to both sides in the length direction.

  Two lamp heaters 11 are arranged in parallel on the upper side of the lower cover 10a of the heater device body 10, and both ends thereof are fixed in the heater stopper support portion 10b by the heater stopper 10c. As the lamp heater 11, for example, a carbon lamp heater manufactured by Panasonic Shikoku Electronics Co., Ltd. is used. In this carbon lamp heater, a carbon-based material having a high far-infrared emissivity is enclosed in a glass tube 11b as a heating element 11a, and the amount of far-infrared radiation is improved by about 30% or more compared to a conventional Colts heater. ing. Specifically, the heating element 11a is built in the glass tube 11b, and the heating element 11a is inserted into the cut portion of the terminal 11c, and the internal lead wire 11d having a coil-like portion is connected to the terminal 11c. The lamp heater 11 is configured by connecting an external lead wire (not shown) to the other end of the internal lead wire 11d. In the lamp heater 11, the length (L1) of the heating element 11a is shorter than its entire length. Therefore, by design, the length (L1) of the heating element 11a is shorter than the length (L2) between the heater stopper support portions 10b of the heater device body 10. The lamp heater may be a halogen lamp heater other than the carbon lamp heater.

  In addition to the lamp heater 11, an electric heater capable of heating the heating element 3 by emitting infrared rays in the near-infrared to far-infrared region can be substituted, but the heating element 11a is enclosed by an outer tube such as a glass tube 11b. In the case of the lamp heater 11, since the glass tube 11b is likely to be damaged when moisture such as boiled juice falls directly on the outer glass tube 11b, the technical significance of disposing the heat-resistant cover 13 on the upper side is great.

  The reflector 12 is formed by bending a metal plate-like member whose surface is a reflecting surface into an angular U-shape so as to have a bottom surface 12a, an inclined surface 12b, and a vertical surface 12c, as shown in FIG. The inner surface is formed as a reflection surface, and is provided for each lamp heater 11. The reflector 12 is disposed on the upper side of the lower cover 10 a of the apparatus body 10 so as to surround the lamp heater 11.

  The heat-resistant cover 13 is made of stainless steel and emits far-infrared rays when heated by the radiant heat from the lamp heater 11 to supply radiant heat to the object to be cooked. As shown in FIGS. 3 to 6, the heat-resistant cover 13 is formed in a mountain shape having an inclined surface so as to surround the upper part of the two reflectors 12 provided at an interval from the lamp heater 11. The top plate 13a, the side wall 13b suspended from the inclined end portion of the top plate 13a, and a bent piece 13c formed by bending inward from the end portion of the side wall 13b in the heater longitudinal direction.

  By forming the heat-resistant cover 13 in a mountain shape, the falling object from the heating body 3 can be easily dropped onto the drain pan 7 below. Since the side wall 13b is in contact with the outer surface of the vertical surface 12c of the reflecting plate 12, it is possible to prevent the displacement with respect to the direction orthogonal to the longitudinal direction of the heater 11. Further, since the inner surface of the bent piece 13c abuts on the vertical surface 12c of the reflecting plate 12, it is possible to prevent displacement in the heater longitudinal direction. Furthermore, the outer surface of the bent piece 13 c comes into contact with the inner surface of the heater stopper support portion 10 b of the heater device body 10. Thus, the heat-resistant cover 13 covers the upper part over the heater stopper support 10b. Therefore, the total length of the heat-resistant cover 13 is longer than the length (L1) of the heating element 11a of the lamp heater 11.

  Thus, since the heat-resistant cover 13 is disposed above the electric heater 11, even if water such as boiled juice falls from the upper side of the heat-resistant cover 13 during cooking, it can be received by the heat-resistant cover 13. The heater 11 can be protected and durability can be provided. Moreover, since the heat-resistant cover 13 is detachably mounted so as to cover the two reflectors 12 and can be detached from the reflector 12, it is possible to wash deposits such as boiled juice adhering to the surface.

  A plurality of holes 13 d are formed in the top plate 13 a of the heat-resistant cover 13. 13 d of holes are formed in the longitudinal direction edge part of the heat-resistant cover 13, and the top part and inclination edge part of the inclined surface of the top plate 13a. That is, a plurality of holes 13d are formed in a portion other than the position of the lamp heater 11 facing the heating element 11a. As described above, it is preferable to provide the heat-resistant cover 13 at all of the longitudinal end portion, the top portion of the inclined surface of the top plate 13a, and the inclined end portion of the top plate 13a. May be.

  Since the lamp heater 11 has a structure in which heat is generated from the heating element 11a (the heating length is L1 in FIG. 5), the heat-resistant cover 13 is most heated at the position facing the heating element 11a. The temperature distribution can be biased. A similar bias can also occur in the temperature distribution of the heating element 3 heated by the radiant heat generated from the heat-resistant cover 13 having such a biased temperature distribution.

  Therefore, by forming a plurality of holes 13d in the portion of the heat-resistant cover 13 that has a relatively low temperature, this portion radiates far infrared rays by being heated by the heat from the lamp heater 11, and at the same time, the lamp heater 11 Can be supplied as it is to the upper heating body 3 through the holes 13d. By setting it as such a structure, the temperature distribution in the heating body 3 becomes substantially uniform, and uneven burning can be prevented.

  The size of the holes 13d is set to 2 to 7 mm, and the interval between the holes is set to about 2 mm. If it is this range, the fallen object from the heating body 3 is hard to pass a hole, and the radiant heat from the lamp heater 11 can be passed, and it can supply to the upper heating body 3. FIG. Specifically, the size of the hole 13d formed in the end portion in the longitudinal direction of the heat-resistant cover 13 is set such that the diameter is 6 mm and the distance between the centers is 8 mm (hole interval is 2 mm). The size of the holes 13d formed at the top and the inclined end of the top plate 13a is set such that the diameter is 4.5 mm and the distance between the centers is 8 mm (the interval between the holes is 2 mm).

  On the left and right side walls of the housing 2, drain pan support portions 6 that support the drain pan 7 protrude inward. The position of the drain pan support 6 is set so that the heater device support 4 positioned on the upper side of the drain pan 7 and the drain pan 7 do not come into contact with each other.

  The drain pan 7 is made of a metal such as stainless steel, and is a container having a rectangular planar shape and a flange on the periphery, and the left and right flanges are placed on the drain pan support portion 6, so It is supported so that it can be pulled out from. The drain pan 7 is formed larger than the upper heating body 3, and receives boiling juice and oil droplets dripping from the heating body 3. Further, a gap 14 is formed between the rear end of the drain pan 7 and the rear wall of the housing 2, and the electric wiring 15 that connects the heater device 5 and the operation unit 8 is arranged using the gap 14. Can do. A flange 7 a on the front side (drawing direction side) of the drain pan 7 extends so as to protrude from the front surface of the housing 2. Since the flange 7a covers an operation knob 8a (described later) of the operation unit 8, it is possible to prevent a fallen object such as an object to be cooked or a sauce from being applied to the operation knob 8a during cooking.

  The operation unit 8 is provided below the housing 2. On the front surface of the operation unit 8, an operation knob 8 a protrudes from the housing 2, and the operation of the heater device 5 can be operated.

  In the above configuration, four sets of heater devices 5 are arranged and incorporated in the heater device support portion 4 of the housing 2. And the desired heating body 3 (for example, a takoyaki plate) is mounted in the receiving part 9 of the upper surface opening of the housing | casing 2. FIG. When the heater device 5 is driven, the lamp heater 11 generates radiant heat. Further, the radiant heat downward of the lamp heater 11 is guided upward by the reflector 12. The heat-resistant cover 13 is heated by direct radiant heat from the lamp heater 11 and radiant heat from the reflector 12, and far infrared rays are irradiated toward the heater 3. Thereby, since the heating body 3 is heated, the cooking thing on the heating body 3 will be cooked.

  In addition, a plurality of holes 13d are formed in the longitudinal direction end portion of the top plate 13a of the heat-resistant cover 13, which is a portion where the temperature is relatively low, and the top portion and the inclined end portion of the top plate 13a. Yes. Radiant heat can be supplied directly to the upper heating element 3 through the hole 13d. Therefore, the temperature distribution in the heating body 3 becomes substantially uniform, and uneven baking can be prevented.

  Further, the drain pan 7 partitions the casing 2 up and down except for the gap 14 at the rear, and can repel the heat leaked downward from the heater device 5 upward. At this time, since the drain pan 7 is disposed above the operation unit 8, the space between the heater device 5 and the drain pan 7 is narrowed, and the combustion efficiency of the heating chamber can be increased. Moreover, since heat is interrupted | blocked by the drain pan 7, it can prevent that the operation unit 8 is exposed to heat, and is safer.

  In addition, this invention is not limited to the said embodiment, Of course, many correction changes can be added within the scope of the present invention. For example, in the above-described embodiment, an example in which four sets of heater devices 5 are mounted on the housing 2 has been described, but it is needless to say that one or a plurality of heater devices 5 may be mounted depending on the cooking target.

  Moreover, in the said embodiment, although the heat-resistant cover 13 showed the example formed in the mountain shape so that the upper side of the two reflectors 12 provided side by side, as shown in FIG.7 (b), You may form in a mountain shape so that the upper part of one reflector 12 may be enclosed. In this case as well, a plurality of holes 13 d are formed in the top plate 13 a of the heat-resistant cover 13. In detail, as shown to Fig.7 (a), it forms in the longitudinal direction edge part of the heat-resistant cover 13, and the inclination edge part of the top plate 13a. Since the top part of the top plate 13a is a position facing the part other than the end part of the lamp heater 11, the hole 13d is not formed.

  Moreover, in the said embodiment, although the hole 13d of the heat-resistant cover 13 was formed in the circular hole, as shown in FIG. 8, you may form in the elongate hole extended in the width direction or a heater longitudinal direction.

Side surface sectional drawing which shows embodiment of the heating cooker which concerns on this invention Similarly, an exploded perspective view of a heating cooker Exploded perspective view of a heater device mounted on a heating cooker Similarly, front sectional view of the heater device It is a figure which similarly shows a heater apparatus, Comprising: (a) Top view, (b) AA sectional drawing Front view of heat-resistant cover It is a heater apparatus of another form, Comprising: (a) Top view, (b) BB sectional drawing Top view of other forms of heat-resistant cover

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heating cooker 2 Case 3 Heating body 4 Heater apparatus support part 5 Heater apparatus 6 Drain pan support part 7 Drain pan 7a Flange 8 Operation unit 8a Operation knob 9 Receiving part 10 Heater apparatus main body 11 Lamp heater 12 Reflector 13 Heat-resistant cover 14 Crevice 15 Wiring

Claims (5)

  A heat-resistant cover that is provided in a heater device of a heating cooker and protects an electric heater that is a heating source of the heater device, and has a top plate that covers the top of the electric heater. A heat-resistant cover characterized by having holes formed therein.   A heat-resistant cover that is provided in a heater device of a heating cooker and protects an electric heater that is a heating source of the heater device, and has a top plate that covers an upper portion of the electric heater, and the top plate includes an electric heater A heat-resistant cover, wherein a plurality of holes are formed around a position facing the heating element.   The heat-resistant cover according to claim 1 or 2, wherein the heat-resistant cover is made of stainless steel.   A heater device used by being mounted on a heating cooker, wherein the heater device main body includes an electric heater for heating the heating body, a reflector disposed below the electric heater, and the electric heater A heater device comprising: the heat-resistant cover according to any one of claims 1 to 3 disposed above.   The box-shaped housing | casing with which the upper surface was opened, the heating body which is provided in the upper surface opening of this housing | casing, and cooks a to-be-cooked object, and is mounted in the support part formed in the said housing | casing. A heating cooker comprising: a heater device.

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