JP4963303B2 - Cooker - Google Patents

Description

  The present invention relates to a heating cooker.

Patent Document 1 includes a cooker body that is dropped into the accommodation space of the countertop, and a top plate that is attached so as to close the opening of the accommodation space, and the burner is exposed from the opening of the top plate. A cooker is disclosed. In this cooking device, as a means for increasing the mechanical strength of the top plate, a structure in which a steel plate reinforcing plate is stacked on the lower surface of the top plate is employed, but according to the structure in which this reinforcing plate is stacked, The effect of preventing the top plate from being overheated and deformed can also be expected.
JP-A-2004-360984

  In the heating cooker, the reinforcing plate is only fixed to the top plate by the frame at the outer peripheral edge thereof, and the central portion of the top plate and the reinforcing plate, that is, the region where the heating heat source is arranged. Then, the top plate and the reinforcing plate are not fixed. Therefore, when the top plate is overheated due to thermal influence, the center side portion of the top plate abuts against the upper surface of the reinforcing plate for warping deformation in which the center side portion of the top plate swells downward. Although it can prevent by this, it cannot prevent the curvature deformation which the center side part of a top plate swells upwards.

  When the top plate warps downward, the virtues placed on the top surface of the top plate are supported by the top plate at a position far from the center, so there is no problem with the stability of the virtues, but the top plate is In the case of warping, the virtues are supported at a position close to the center, and the part far from the center of the virtues floats from the top plate, so the attitude of the virtues becomes unstable. Therefore, it is an important issue to prevent the warp deformation of the top plate.

  The present invention has been completed based on the above circumstances, and an object thereof is to effectively avoid thermal deformation of the top plate so as to swell upward.

As means for achieving the above-mentioned object, the invention of claim 1 is arranged so as to cover the upper surface of the cooker main body having a heating heat source and the outer peripheral edge supported. A top plate and a heat radiating plate of a size that fits in a region inside the outer peripheral edge of the top plate, and in the vicinity of the heating heat source, the heat radiating plate is in close contact with the lower surface of the top plate. Heat transfer from the top plate to the heat radiating plate is performed, and the heat radiating plate is fixed to the lower surface of the top plate so that the entire weight is supported only by the top plate as a weight. It is characterized by its function .

  According to a second aspect of the present invention, in the first aspect, the top plate is formed with a heat source opening for exposing the heating heat source, and the heat radiating plate corresponds to the heat source opening. A mounting hole is formed, and the heat radiating plate and the top plate are overlapped by a locking member that locks the opening edge on the upper surface side of the opening for heat source and the opening edge on the lower surface side of the mounting hole. It is characterized by being fixed.

  According to a third aspect of the present invention, there is provided the cover according to the second aspect, wherein the locking member is disposed on the top surface of the top plate so as to cover the opening edge of the heat source opening, and is fixed to the cover. And a mounting member disposed so as to contact the lower surface of the heat radiating plate.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the heating heat source is provided at a plurality of positions spaced from each other on the top surface of the top plate. The heat sink has a single plate shape with a size such that the plurality of heating heat sources are disposed inside the heat sink, and the top plate and the heat sink have at least the plurality of heating plates. It is characterized in that it is fixed so as not to be separated in the vicinity of the heat source for use.

<Invention of Claim 1>
When the temperature of the top plate rises during cooking, the heat of the top plate is released through the heat radiating plate, so that overheating of the top plate is prevented and deformation of the top plate due to overheating is suppressed. In addition, the heat sink is a size that fits in the area inside the outer periphery of the top plate, and is fixed to the lower surface of the top plate in the vicinity of the heat source for heating, so the total weight of the heat sink is only the top plate Supported by. As a result, the heat radiating plate functions as a weight that applies a downward pulling force to the area around the heating heat source on the top board, and this weight action causes the area around the heating heat source of the top board to move upward. It is possible to effectively avoid thermal deformation so as to swell.

<Invention of Claim 2>
Since the top plate and the heat sink are fixed by the mechanical locking action of the locking member, it is not necessary to apply an adhesive between the lower surface of the top plate and the upper surface of the heat sink. Therefore, compared with the case where an adhesive layer is interposed between the top plate and the heat radiating plate, the heat transfer efficiency from the top plate to the heat radiating plate is excellent, and a high heat radiating effect is obtained.

<Invention of Claim 3>
Since the cover also serves as a locking member, the number of parts can be reduced compared to the case where a dedicated locking member is provided separately from the cover.

<Invention of Claim 4>
The closer the top plate is to the heating heat source, the easier it is to be heated. Therefore, it is preferable to arrange the heat sink near the heat source for heating, but in this case, if a separate heat sink is arranged for each heat source for heating, the top plate There is a possibility that the plate is locally deformed. Therefore, in the present invention, the heat radiating plate is formed as a single plate having a size such that a plurality of heating heat sources are arranged inside the heat radiating plate, and the top plate and the heat radiating plate are at least a plurality of heating heat sources. It was fixed so that it could not be separated in the vicinity. Thereby, since the area | region containing the several heat source for a heating among top plates is reinforced with a heat sink, the local deformation | transformation of a top plate can be prevented.

<Embodiment 1>
A first embodiment embodying the present invention will be described below with reference to FIGS. As shown in FIGS. 1 and 2, the heating cooker 10 of the present embodiment includes a cooker body 11 that is attached so as to be dropped into an accommodation space 41 that opens on the upper surface of the countertop 40, and the cooker body 11. It is called a built-in type provided with a top panel unit 15 that is arranged so as to cover the opening 42 of the accommodation space 41 so as to cover it. The cooker main body 11 includes a grill 12 inside, and a gas burner 13 (a heat source for heating which is a constituent element of the present invention) using three gaseous fuels on the upper surface. The gas burner 13 (hereinafter, referred to as the burner 13) is disposed so as to be separated from the right front position, the center back position, and the left front position. A rectangular peripheral wall 14 is formed on the upper surface of the cooker main body 11 so as to surround a device (not shown) protruding from the upper surface of the cooker main body 11. The width dimension and the depth dimension of the peripheral wall 14 are smaller than the opening 42 of the accommodation space 41.

  The top plate unit 15 includes a top plate 16, a heat radiating plate 18, and three locking members 20. The heat radiating plate 18 is fixed so as to overlap with the lower surface of the top plate 16 in a state where at least a part thereof is in direct contact. The locking member 20 functions as a means for holding the heat radiating plate 18 and the top plate 16 in an overlapped state.

  The top plate 16 is a steel plate that has been subjected to enamel surface treatment, and has a square shape. The width dimension and depth dimension of the top plate 16 are set larger than the opening 42 of the accommodation space 41. The plate thickness of the top plate 16 is uniform throughout and is 2.0 mm. In the top plate 16, three burner openings 17 (heat source openings which are constituent elements of the present invention) are formed in a circular shape so as to correspond to the burner 13. In a state where the top plate unit 15 is attached to the counter top 40, the outer peripheral edge of the top plate 16 is placed on the opening edge of the accommodation space 41 (opening 42) on the upper surface of the counter top 40. The plate unit 15 is kept at a predetermined height so as to cover the upper surface of the cooker body 11. Further, the three burners 13 of the cooker main body 11 are arranged at intervals in the front, rear, left, and right directions while passing through the corresponding burner openings 17 and exposed on the top surface of the top plate 16. Further, five virtues 28 are placed on the top surface of the top plate 16 for each burner 13.

  The heat sink 18 is made of an aluminum alloy and has a square shape. The width dimension and the depth dimension of the heat sink 18 are set to be smaller than the peripheral wall 14 of the cooker body 11. The thickness of the heat radiating plate 18 is uniform throughout and is 5.0 mm, that is, a dimension that is thicker than the top plate 16. The upper surface of the heat radiating plate 18 is flat, and is held in close contact with the lower surface of the flat top plate 16 in a close contact or almost without leaving a gap. In a state where the top plate unit 15 is attached to the counter top 40, the heat radiating plate 18 is disposed inside the peripheral wall 14 and may interfere with the peripheral wall 14 or may interfere with the opening edge of the opening 42 of the accommodation space 41. Absent. In the heat radiating plate 18, three mounting holes 19 arranged so as to correspond to the burner 13 are formed so as to penetrate in a circular shape concentric with the burner opening 17. The burner 13 passes through the mounting hole 19 and the burner opening 17 and is exposed on the upper surface of the top plate 16. As described above, the upper surface of the top plate 16 has the three burners 13 spaced apart from each other. However, the heat radiating plate 18 is a single plate having a size including all of the three burners 13. There is no. In other words, the heat radiating plate 18 has such a size that all the three burners 13 are arranged inside the heat radiating plate 18.

  As shown in FIGS. 4 and 5, each locking member 20 includes a burner cover 21 (a cover that is a constituent element of the present invention), a mounting plate 24 (an attaching member that is a constituent element of the present invention), and two The seal ring 27 and a plurality of screws 26 are used.

  The burner cover 21 is made of metal and has a ring shape that is concentric with the burner 13 as a whole. The outer peripheral edge of the burner cover 21 is in contact with the upper surface of the top plate 16. The burner cover 21 covers the opening edge of the burner opening 17 on the top surface of the top plate 16 and is disposed so as to fill the gap between the opening edge of the burner opening 17 and the outer peripheral edge of the burner 13. The burner cover 21 is formed with screw receiving portions 22 protruding downward along the inner periphery of the burner opening 17 and the inner periphery of the mounting hole 19 at a plurality of positions spaced in the circumferential direction. The lower surface of the screw receiving portion 22 is substantially the same height as the lower surface of the heat radiating plate 18. Each screw receiving portion 22 is formed with a female screw hole 23 that opens to the lower surface.

  The mounting plate 24 is made of metal and has a concentric circular ring shape with the burner cover 21, and the outer peripheral edge of the mounting plate 24 is in contact with the lower surface of the heat radiating plate 18. A plurality of screw holes 25 corresponding to the female screw holes 23 of the burner cover 21 are formed in the mounting plate 24 so as to penetrate therethrough. The burner cover 21 and the mounting plate 24 are fixed in a state where they are stacked one above the other by tightening screws 26 screwed into the female screw holes 23 from below through the screw holes 25. The burner cover 21 is locked from above on the opening edge of the burner opening 17 on the upper surface of the top plate 16, and the mounting plate 24 is on the opening edge of the mounting hole 19 on the lower surface of the heat radiating plate 18. On the other hand, the top plate 16 and the heat radiating plate 18 are fixed to each other by being mechanically engaged from above and below (that is, sandwiching operation). Due to the assembly structure of the burner cover 21 and the mounting plate 24, the locking member 20 has a form penetrating the burner opening 17 and the mounting hole 19. In other words, the locking member 20 is connected to the burner opening 17. It is attached to the top plate 16 and the heat radiating plate 18 using the attachment holes 19.

  The seal ring 27 is made of a heat-resistant material and has a circular shape that is slightly larger than the burner opening 17 and the mounting hole 19. These seal rings 27 are mounted between the upper surface of the top plate 16 and the lower surface of the burner cover 21, and are mounted between the lower surface of the heat radiating plate 18 and the upper surface of the mounting plate 24.

Next, the operation of this embodiment will be described.
When cooking is performed using the burner 13 or the grill 12, there is a concern that the top plate 16 is heated and deformed. As a countermeasure, in this embodiment, since the heat sink 18 is attached in contact with the lower surface of the top plate 16, the heat of the top plate 16 is released into the atmosphere through the heat sink 18 and the top plate There is no risk of 16 becoming overheated.

  Further, when the burner 13 is used, the temperature rise of the top plate 16 is remarkable in the vicinity of the burner 13, but in the vicinity of the burner 13, due to the mechanical clamping action of the locking member 20, Since the lower surface of the top plate 16 and the upper surface of the heat radiating plate 18 are in close contact with each other (fixed so as not to be separated in the vertical direction), heat transfer efficiency from the top plate 16 to the heat radiating plate 18 is good. Thereby, it is prevented more reliably that the top plate 16 is overheated, and it is prevented that the top plate 16 is deformed due to being overheated.

  Further, the heat radiating plate 18 has a size that does not protrude from the opening region of the accommodation space 41, and is fixed to the lower surface of the top plate 16 in a state where separation in the vertical direction is restricted at least at the center portion thereof. Therefore, when the top plate 16 (top plate unit 15) is attached to the counter top 40, the outer peripheral edge of the heat radiating plate 18 is not supported by the counter top 40. That is, the entire weight of the heat radiating plate 18 is supported only by the top plate 16. Thereby, the heat sink 18 exhibits the function as a weight which gives downward tension | tensile_strength with respect to the area | region where the center part of the top plate 16 and the burner 13 are arrange | positioned. Therefore, even if the top plate 16 is overheated, the top plate 16 may be deformed to warp downward due to the weight of the heat radiating plate 18, but the top plate 16 There is no fear that the central portion of the top plate 16 may be deformed in such a manner that the portion near the burner 13 (region around the heating heat source) is locally expanded upward. .

  Further, as a means for fixing the top plate 16 and the heat radiating plate 18, the top plate 16 and the heat radiating plate 18 are sandwiched by utilizing the mechanical locking action of the locking member 20. It is not necessary to apply an adhesive between the lower surface and the upper surface of the heat radiating plate 18, and a structure in which the top plate 16 and the heat radiating plate 18 are brought into direct contact is realized. Therefore, compared with the case where an adhesive layer is interposed between the top plate 16 and the heat radiating plate 18, the heat transfer efficiency from the top plate 16 to the heat radiating plate 18 is excellent, and a high heat radiating effect is obtained.

  Further, since the burner cover 21 also serves as the locking member 20, the number of parts can be reduced compared to the case where a dedicated locking member is provided separately from the burner cover 21.

  Further, the closer the top plate 16 is to the burner 13, the more easily it is heated. Therefore, the heat radiating plate 18 is preferably disposed near the burner 13. In this case, the same number of heat radiating plates 18 as the burner 13 are prepared. If the heat radiating plate is individually arranged for each burner 13, the top plate 16 may be locally deformed. Therefore, in the present embodiment, the heat radiating plate 18 is formed as a single plate having a size including all of the three burners 13, and the top plate 16 and the heat radiating plate 18 cannot be separated in the vicinity of the three burners 13. It is stuck. Thereby, since the area | region including the three burners 13 among the top plates 16 is reinforced with the heat sink 18, the local deformation | transformation of the top plate 16 can be prevented. In addition, compared with the structure in which one heat sink 18 is provided in one burner 13, the area of the lower surface (that is, the heat dissipation surface) of the heat sink 18 is large, so that the heat dissipation efficiency is improved accordingly.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the said embodiment, although the top plate and the heat sink were fixed by the mechanical latching action, you may fix a top plate and a heat sink using an adhesive agent.
(2) In the above embodiment, the locking member, which is a means for mechanically fixing the top plate and the heat sink, is provided so as to penetrate the burner opening and the mounting hole. Further, a configuration that does not penetrate through any of the mounting holes (for example, a configuration in which a locking member fixed to the lower surface of the top plate is locked to the outer peripheral edge of the heat sink) may be used.
(3) In the above embodiment, the burner cover is also used as the locking member. However, the locking member may be a dedicated component different from the burner cover.
(4) In the said embodiment, although the heat sink was made into the single plate shape of the magnitude | size including a some burner, you may arrange | position an individual heat sink for every burner.
(5) Although the thickness of the top plate is 2.0 mm in the above embodiment, the thickness of the top plate may be thicker or thinner than this.
(6) In the above embodiment, the thickness of the heat sink is 5.0 mm, but the thickness of the heat sink may be thicker or thinner than this.
(7) Although the thickness of the heat sink is made thicker than the top plate in the above embodiment, the top plate and the heat sink may be the same thickness, or the heat sink may be thinner than the top plate.
(8) Although the heat sink has a uniform thickness throughout the embodiment in the above embodiment, the thickness of the heat sink may be partially different.
(9) In the above embodiment, the heat radiating plate is almost closely contacted with the top plate over the entire area or approached with almost no gap, but a part of the heat radiating plate is largely separated from the top plate. There may be.
(10) Although the top plate is made of enamel in the above embodiment, the top plate may be made of a material with a metal exposed on the surface or made entirely of tempered glass.
(11) Although the heat sink is made of an aluminum alloy in the above embodiment, the heat sink may be made of a metal other than an aluminum alloy.
(12) In the said embodiment, it is a built-in type heating cooker by which a cooking appliance main body is attached so that it may be dropped in the accommodation space of a countertop, and a top plate is supported by the opening edge of the accommodation space of a countertop. Although the case has been described, the present invention can also be applied to a desktop heating cooker in which the outer peripheral edge of the top plate is supported by the cooker body.
(13) In the above embodiment, the case where the heating heat source is a gas burner that burns gaseous fuel has been described. However, the present invention can also be applied when the heating heat source is a burner that burns liquid fuel, The present invention can be applied not only to a burner but also to an electric heater using nichrome wire or other heat sources.

The perspective view of the heating cooker of Embodiment 1. Partially cutaway front view showing the state where the countertop is attached to the cooking device Top view of cooking device Partial enlarged sectional view showing the assembly structure of the top plate and heat sink Exploded perspective view showing the assembly structure of the top plate and heat sink

Explanation of symbols

10 ... Cooking device 11 ... Cooking device body 13 ... Burner (heat source for heating)
16 ... Top plate 17 ... Burner opening (heat source opening)
18 ... Radiating plate 19 ... Mounting hole 20 ... Locking member 21 ... Burner cover (cover)
24 ... Mounting plate (mounting member)

Claims (4)

A cooker body having a heat source for heating;
With the outer peripheral edge supported, a top plate arranged to cover the upper surface of the cooker body;
A heat radiating plate of a size that fits in a region inside the outer peripheral edge of the top plate ,
In the vicinity of the heat source for heating, the heat radiating plate is in close contact with the lower surface of the top plate so that heat is transferred from the top plate to the heat radiating plate, and the heat radiating plate is A cooking device characterized in that it functions as a weight by being fixed to the lower surface of the top plate and supporting the entire weight only by the top plate . The top plate is formed with a heat source opening for exposing the heating heat source,
A mounting hole corresponding to the opening for the heat source is formed in the heat radiating plate,
The heat radiating plate and the top plate are fixed in a state of being overlapped by a locking member that is locked to an opening edge on the upper surface side of the opening for heat source and an opening edge on the lower surface side of the mounting hole. The cooking device according to claim 1. The locking member is
A cover arranged to cover an opening edge of the opening for heat source on the upper surface of the top plate;
The cooking device according to claim 2, further comprising: an attachment member disposed so as to contact the lower surface of the heat radiating plate in a state of being fixed to the cover. The heating heat source is provided to be disposed at a plurality of positions spaced from each other on the top surface of the top plate,
The heat radiating plate has a single plate shape with a size such that the plurality of heating heat sources are arranged inside the heat radiating plate,
The cooking device according to any one of claims 1 to 3, wherein the top plate and the heat radiating plate are fixed so as not to be separated at least in the vicinity of the plurality of heating heat sources. .

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