Dry-burning prevention structure of heating plate and cooking device

Abstract

The present invention relates to the field of cooking equipment, and more particularly, to a dry-burning prevention structure for a heating plate and a cooking device. The dry-burning prevention structure for the heating plate includes a heating plate housing, a heating tube, an aluminum bracket, a support block, and a thermostat; the aluminum bracket is erected on the heating tube, and the thermostat is installed on the aluminum bracket; the support block is installed between the heating plate housing and the aluminum bracket, and both sides of the support block are respectively in contact with the heating plate housing and the aluminum bracket, and the deformation temperature of the support block is higher than the temperature during the brazing of the aluminum bracket. The cooking device includes the above-mentioned dry-burning prevention structure for the heating plate. The dry-burning prevention structure for the heating plate and the cooking device provided by the present invention have the advantages that the aluminum bracket is not easily deformed, the accuracy of the installation position of the thermostat is relatively high, the detection accuracy of the thermostat is relatively high, and when there is a dry-burning problem with the heating plate, the thermostat can quickly cut off the power supply of the heating plate, and the potential safety hazard is relatively low.

Description

Technical Field

[0001] The present invention relates to the field of cooking equipment, and in particular, to an anti-dry burning structure for a heating plate and a cooking device. Background Art

[0002] As a heating device, a heating plate is applied to many devices, such as cooking devices like steam ovens and steam convection ovens; generally, a thermostat is provided at the lower end of the heating plate housing to cut off the power supply when the temperature of the heating plate is too high, preventing the heating plate from dry burning; however, there is a hidden danger of the thermostat malfunctioning, so an aluminum bracket with good heat conduction effect is erected at the lower end of the heating tube, and a temperature limiter is installed on the aluminum bracket. The aluminum bracket can conduct the temperature of the heating tube to the temperature limiter; when the thermostat malfunctions, once the heating plate reaches the preset value due to dry burning, the temperature limiter will disconnect and cut off the power supply to achieve the purpose of preventing the heating plate from dry burning.

[0003] The aluminum bracket and the heating tube are fixedly connected by brazing. The temperature during brazing of the aluminum bracket (600 - 700 °C) is close to the deformation temperature of the aluminum bracket, resulting in easy deformation of the aluminum bracket during brazing. Once the aluminum bracket is deformed, it will affect the accuracy of the installation position of the temperature limiter, and further affect the detection accuracy of the temperature limiter. Thus, when there is a dry burning problem with the heating plate, the temperature limiter cannot quickly sense the actual temperature of the heating tube and cannot quickly cut off the power supply of the heating plate, posing a relatively large safety hazard.

[0004] In summary, how to overcome the above defects of the existing anti-dry burning structure for heating plates is a technical problem that those skilled in the art need to solve urgently. Summary of the Invention

[0005] The purpose of the present invention is to provide an anti-dry burning structure for a heating plate and a cooking device to alleviate the technical problem of relatively large safety hazards existing in the existing anti-dry burning structure for heating plates.

[0006] The anti-dry burning structure for a heating plate provided by the present invention includes a heating plate housing, a heating tube, an aluminum bracket, a support block, and a temperature limiter;

[0007] Wherein, the aluminum bracket is erected on the heating tube, and the temperature limiter is installed on the aluminum bracket; the support block is installed between the heating plate housing and the aluminum bracket, and both sides of the support block are respectively in contact with the heating plate housing and the aluminum bracket, and the deformation temperature of the support block is higher than the temperature during brazing of the aluminum bracket.

[0008] Preferably, as an implementable manner, a plurality of positioning posts are provided on the heating plate housing, a plurality of first positioning holes are formed on the support block, the plurality of first positioning holes are correspondingly arranged with the plurality of positioning posts, and the positioning posts are matched with the corresponding first positioning holes.

[0009] Preferably, as an implementable embodiment, a plurality of second positioning holes are formed in the aluminum bracket, and the plurality of second positioning holes are correspondingly arranged with the plurality of positioning columns. The portion of the positioning column passing through the first positioning hole can cooperate with the corresponding second positioning hole.

[0010] Preferably, as an implementable embodiment, a plurality of third positioning holes are formed in the thermostat, and the plurality of third positioning holes are correspondingly arranged with the plurality of positioning columns. The portion of the positioning column passing through the corresponding second positioning hole can cooperate with the corresponding third positioning hole.

[0011] Preferably, as an implementable embodiment, the heating plate anti-dry burning structure further includes a plurality of nuts correspondingly arranged with the plurality of positioning columns. The portion of the positioning column passing through the third positioning hole is provided with an external thread, and the nut cooperates with the external thread on the corresponding positioning column.

[0012] Preferably, as an implementable embodiment, there are a plurality of positioning columns, and the plurality of positioning columns are dispersedly arranged.

[0013] Preferably, as an implementable embodiment, the support block is a ceramic block.

[0014] Preferably, as an implementable embodiment, a plurality of heat dissipation holes are formed in the ceramic block at intervals, and the length direction of the heat dissipation holes is the same as the length direction of the first positioning hole.

[0015] Preferably, as an implementable embodiment, the surface of the support block in contact with the heating plate housing is a first plane, and the surface of the support block in contact with the aluminum bracket is a second plane; the first plane is parallel to the second plane, and the distance between the first plane and the second plane is greater than or equal to 8 millimeters.

[0016] Correspondingly, the cooking device provided by the present invention includes the above-mentioned heating plate anti-dry burning structure.

[0017] The beneficial effects of the heating plate anti-dry burning structure and the cooking device provided by the present invention are:

[0018] In the heating plate anti-dry burning structure in the cooking device provided by the present invention, a support block is added between the heating plate housing and the aluminum bracket, and both sides of the support block are respectively in contact with the heating plate housing and the aluminum bracket, so as to use the support block to support the aluminum bracket.

[0019] The deformation temperature of the above-mentioned support block is higher than the temperature during the brazing of the aluminum bracket. Thus, when the aluminum bracket and the heating tube are brazed, the support block will not deform. Therefore, with the support of the support block, even if the brazing temperature reaches the deformation temperature of the aluminum bracket, the aluminum bracket is not likely to deform, improving the accuracy of the installation position of the temperature limiter. Furthermore, the detection accuracy of the temperature limiter is improved. In this way, when there is a dry burning problem with the heating plate, the temperature limiter can quickly cut off the power supply of the heating plate, reducing the safety hazard. Brief Description of the Drawings

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 Schematic perspective view of the cooking device provided by the embodiment of the present invention;

[0022] Figure 2 Assembly structure schematic diagram of the heating plate, support block and aluminum bracket in the heating plate dry burning prevention device provided by the embodiment of the present invention;

[0023] Figure 3 For Figure 2 exploded view of the heating plate, support block and aluminum bracket in the heating plate dry burning prevention device in

[0024] Figure 4 Exploded view of the heating plate dry burning prevention device provided by the embodiment of the present invention.

[0025] Explanation of the reference numerals in the drawings:

[0026] 10 - heating plate housing; 11 - positioning post;

[0027] 20 - heating tube;

[0028] 30 - aluminum bracket; 31 - second positioning hole;

[0029] 40 - support block; 41 - first positioning hole; 42 - heat dissipation hole;

[0030] 50 - temperature limiter; 51 - third positioning hole;

[0031] 60 - nut. Detailed Embodiments

[0032] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0035] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0036] See Figure 1 and Figure 4 , this embodiment provides a dry - burning prevention structure for a heating plate, which includes a heating plate housing 10, a heating tube 20, an aluminum bracket 30, a support block 40, and a thermostat 50.

[0037] Among them, the aluminum bracket 30 is erected on the heating tube 20, and the thermostat 50 is installed on the aluminum bracket 30; the support block 40 is installed between the heating plate housing 10 and the aluminum bracket 30, and both sides of the support block 40 are respectively in contact with the heating plate housing 10 and the aluminum bracket 30, and the deformation temperature of the support block 40 is higher than the temperature during the brazing of the aluminum bracket 30.

[0038] The dry - burning prevention structure for a heating plate provided in this embodiment adds a support block 40 between the heating plate housing 10 and the aluminum bracket 30, and both sides of the support block 40 are respectively in contact with the heating plate housing 10 and the aluminum bracket 30 to use the support block 40 to support the aluminum bracket 30.

[0039] The deformation temperature of the above-mentioned support block 40 is higher than the temperature during the brazing of the aluminum bracket 30. Thus, when the aluminum bracket 30 and the heating tube 20 are brazed, the support block 40 will not deform. Therefore, with the support of the support block 40, even if the brazing temperature reaches the deformation temperature of the aluminum bracket 30, the aluminum bracket 30 is not likely to deform, improving the accuracy of the installation position of the temperature limiter 50. Furthermore, the detection accuracy of the temperature limiter 50 is improved. In this way, when there is a dry burning problem with the heating plate, the temperature limiter 50 can quickly cut off the power supply of the heating plate, reducing the safety hazard.

[0040] Preferably, referring to Figure 2 and Figure 3 , a plurality of positioning posts 11 can be provided on the heating plate housing 10. At the same time, a plurality of first positioning holes 41 are formed on the support block 40, and the plurality of first positioning holes 41 are arranged corresponding to the plurality of positioning posts 11, and the positioning posts 11 can be engaged with the corresponding first positioning holes 41. That is, when the support block 40 needs to be installed on the heating plate housing 10, first, each of the first positioning holes 41 on the support block 40 is opposite to the corresponding positioning post 11 on the heating plate housing 10, and then the support block 40 is moved towards the heating plate housing 10 so that each of the positioning posts 11 on the heating plate housing 10 can penetrate into the corresponding first positioning hole 41 on the support block 40. Thus, the positioning posts 11 on the heating plate housing 10 can position the support block 40, preventing the support block 40 from being misaligned, so that the support block 40 can accurately stay at a position where it can better support the aluminum bracket 30. Furthermore, the supporting effect of the support block 40 on the aluminum bracket 30 is ensured.

[0041] Furthermore, referring to Figure 2 and Figure 3 , a plurality of second positioning holes 31 are formed on the aluminum bracket 30, and the plurality of second positioning holes 31 are arranged corresponding to the plurality of positioning posts 11 on the heating plate housing 10, and the part of the positioning post 11 passing through the first positioning hole 41 can be engaged with the corresponding second positioning hole 31. That is, after the positioning of the support block 40 is completed, each of the second positioning holes 31 on the aluminum bracket 30 is opposite to the corresponding positioning post 11 on the heating plate housing 10, and then the aluminum bracket 30 is moved towards the heating plate housing 10 so that each of the positioning posts 11 on the heating plate housing 10 can penetrate into the corresponding second positioning hole 31 on the aluminum bracket 30. Thus, the positioning posts 11 on the heating plate housing 10 can position the aluminum bracket 30, preventing the aluminum bracket 30 from being misaligned, so that the aluminum bracket 30 can accurately stay at a position where it can be supported by the support block 40. Furthermore, not only the brazing position of the aluminum bracket 30 can be ensured, but also the supporting effect of the support block 40 on the aluminum bracket 30 can be ensured.

[0042] Furthermore, referring to Figure 2 - Figure 4, a number of third positioning holes 51 are formed on the temperature limiter 50, and the number of third positioning holes 51 is correspondingly arranged with a number of positioning posts 11 on the heating plate housing 10, and the part of the positioning post 11 passing through the second positioning hole 31 can be matched with the corresponding third positioning hole 51. That is, after the positioning of the aluminum bracket 30 is completed, each third positioning hole 51 on the temperature limiter 50 is opposite to the corresponding positioning post 11 on the heating plate housing 10, and then the temperature limiter 50 is moved towards the heating plate housing 10 so that each positioning post 11 on the heating plate housing 10 can penetrate into the corresponding third positioning hole 51 on the temperature limiter 50. Thus, the positioning post 11 on the heating plate housing 10 can position the temperature limiter 50 to prevent the temperature limiter 50 from being misaligned, so that the temperature limiter 50 can be limited to a suitable installation position. Furthermore, the detection accuracy of the temperature limiter 50 can be improved. In this way, when the heating plate has a dry burning problem, the temperature limiter 50 can timely sense the actual temperature of the heating tube 20 and timely cut off the power supply of the heating plate, reducing potential safety hazards.

[0043] Specifically, referring to Figure 4 , the anti-dry burning structure of the heating plate provided in this embodiment further includes a number of nuts 60 correspondingly arranged with the number of positioning posts 11. External threads are provided on the part of the positioning post 11 passing through the third positioning hole 51. That is to say, after the installation of the support block 40, the aluminum bracket 30 and the temperature limiter 50 is completed, there is still a protruding part on the positioning post 11, and external threads exist on this protruding part. The nut 60 can be matched with the external threads on this part to achieve the fixed cooperation between the nut 60 and the positioning post 11. Thus, the positioning post 11 and the nut 60 can fix the heating plate housing 10, the support block 40, the aluminum bracket 30 and the temperature limiter 50.

[0044] Preferably, a number of positioning posts 11 can be provided and the number of positioning posts 11 can be dispersedly arranged to improve the positioning effect of the positioning posts 11 on the support block 40, the aluminum bracket 30 and the temperature limiter 50.

[0045] Specifically, four positioning posts 11 can be provided. Correspondingly, four first positioning holes 41 on the support block 40, four second positioning holes 31 on the aluminum bracket 30 and four third positioning holes 51 on the temperature limiter 50 are provided. Among them, there are two temperature limiters 50, and the four third positioning holes 51 are respectively arranged on both sides of the two temperature limiters 50.

[0046] Specifically, a ceramic block can be selected as the above-mentioned support block 40.

[0047] It should be noted that at the temperature during the brazing of the aluminum bracket 30, the ceramic will not deform, which is a requirement for the material of the composite support block 40. In addition, the ceramic has good insulation and will not cause a short - circuit problem; the ceramic has good heat insulation and is not easy to dissipate the heat of the heating tube 20 to the outside. Thus, the thermostat 50 can more timely sense the actual temperature when the heating plate is dry - burned.

[0048] Preferably, referring to Figure 3 , a plurality of heat - dissipation holes 42 arranged at intervals can be formed in the ceramic block, and the length direction of the heat - dissipation holes 42 is set to be the same as the length direction of the first positioning hole 41. Thus, when the aluminum bracket 30 and the heating tube 20 are brazed, the heat - dissipation holes 42 on the ceramic block can disperse the heat, alleviating the problem of local deformation of the aluminum sheet of the aluminum bracket caused by local overheating. In addition, during the high - temperature processing of the ceramic block, the existence of the heat - dissipation holes 42 can alleviate the problem that the surfaces of the ceramic block in contact with the heating - plate housing 10 and the aluminum sheet of the aluminum bracket bulge due to heat, and further improve the fitting degree between the ceramic block and the heating - plate housing 10 and the aluminum bracket 30, ensuring the supporting effect on the aluminum bracket 30.

[0049] Preferably, the above - mentioned heat - dissipation holes 42 are evenly dispersed on the ceramic block, thereby improving the heat - dissipation effect of the heat - dissipation holes 42.

[0050] Specifically, the surface of the support block 40 in contact with the heating - plate housing 10 is a plane, which is defined as the first plane. Thus, the contact area between the support block 40 and the heating - plate housing 10 can be increased, and the relative - position accuracy between the support block 40 and the heating - plate housing 10 can be improved; the surface of the support block 40 in contact with the aluminum bracket 30 is a plane, which is defined as the second plane. Thus, the contact area between the support block 40 and the aluminum bracket 30 can be increased, and the relative - position accuracy between the support block 40 and the aluminum bracket 30 can be improved. Further, the supporting and limiting effect of the support block 40 on the aluminum bracket 30 can be improved.

[0051] Furthermore, the first plane and the second plane of the support block 40 are arranged in parallel, and the distance between the first plane and the second plane is set to be greater than or equal to 8 mm, so that the structural strength of the support block 40 itself is sufficient to support the aluminum bracket 30.

[0052] Referring to Figure 1 , this embodiment also provides a cooking device, which includes the above - mentioned heating - plate anti - dry - burning structure.

[0053] In summary, the present invention discloses a heating plate anti-dry burning structure and a cooking device, which overcome many technical defects of the traditional heating plate anti-dry burning structure. For the heating plate anti-dry burning structure and the cooking device provided in this embodiment, the aluminum bracket 30 is not easily deformed, the installation position of the temperature limiter 50 has a high degree of accuracy, the detection accuracy of the temperature limiter 50 is high, and when there is a dry burning problem with the heating plate, the temperature limiter 50 can quickly cut off the power supply of the heating plate, and the potential safety hazard is low.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dry-burning prevention structure for a heating plate, characterized in that, It includes a heating plate housing (10), a heating tube (20), an aluminum bracket (30), a support block (40) and a thermostat (50); Among them, the aluminum bracket (30) is erected on the heating tube (20), and the thermostat (50) is installed on the aluminum bracket (30); the support block (40) is installed between the heating plate housing (10) and the aluminum bracket (30), and both sides of the support block (40) are respectively in contact with the heating plate housing (10) and the aluminum bracket (30), and the deformation temperature of the support block (40) is higher than the temperature during the brazing of the aluminum bracket (30); When brazing the aluminum bracket (30) and the heating tube (20), the support block (40) will not deform; A number of positioning posts (11) are provided on the heating plate housing (10), a number of first positioning holes (41) are provided on the support block (40), the number of the first positioning holes (41) corresponds to the number of the positioning posts (11), and the positioning posts (11) cooperate with the corresponding first positioning holes (41).

2. The anti-dry burning structure of the heating plate according to claim 1, wherein, A number of second positioning holes (31) are provided on the aluminum bracket (30), the number of the second positioning holes (31) corresponds to the number of the positioning posts (11), and the part of the positioning post (11) passing through the first positioning hole (41) can cooperate with the corresponding second positioning hole (31).

3. The anti-dry burning structure of the heating plate according to claim 2, characterized in that A number of third positioning holes (51) are provided on the thermostat (50), the number of the third positioning holes (51) corresponds to the number of the positioning posts (11), and the part of the positioning post (11) passing through the corresponding second positioning hole (31) can cooperate with the corresponding third positioning hole (51).

4. The anti-dry burning structure of the heating plate according to claim 3, characterized in that The anti-dry burning structure of the heating plate further includes a number of nuts (60) corresponding to the number of the positioning posts (11), the part of the positioning post (11) passing through the third positioning hole (51) is provided with an external thread, and the nut (60) cooperates with the external thread on the corresponding positioning post (11).

5. The anti-dry burning structure of the heating plate according to claim 1, wherein There are multiple positioning posts (11), and the multiple positioning posts (11) are dispersedly arranged.

6. The anti-dry burning structure of the heating plate according to any one of claims 1-5, characterized in that, The support block (40) is a ceramic block.

7. The anti-dry burning structure of the heating plate according to claim 6, wherein A number of heat dissipation holes (42) are provided on the ceramic block at intervals, and the length direction of the heat dissipation holes (42) is the same as the length direction of the first positioning hole (41).

8. The anti-dry burning structure of the heating plate according to any one of claims 1-5, characterized in that, The surface of the support block (40) in contact with the heating plate housing (10) is a first plane, and the surface of the support block (40) in contact with the aluminum bracket (30) is a second plane; The first plane is parallel to the second plane, and the distance between the first plane and the second plane is greater than or equal to 8 millimeters.

9. A cooking device, characterized in that, It includes the anti-dry burning structure of the heating plate according to any one of claims 1-8.

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