Food heat preservation pad

Abstract

The utility model discloses a food heat preservation pad, and relates to the technical field of food heat preservation. Comprising a base plate body and a control unit connected with the base plate body. The base plate body is manufactured through an integrated pressing process and sequentially comprises a first silica gel layer, a heating layer and a second silica gel layer from top to bottom. The heating layer comprises a heating wire module and a fixed net, and the heating wire module is sewn and fixed on the fixed net through silk threads; the heating wire module comprises a wire main body and a heating wire wound on the outer wall of the wire main body; the heating wire module is electrically connected with the control unit; according to the technical scheme, flexible folding and curling can be achieved, and use and storage convenience is improved.

Description

Technical Field

[0001] This application relates to the field of food insulation technology, and more particularly to a food insulation pad. Background Technology

[0002] In family gatherings, when preparing a large number of dishes, the first dishes often cool down due to prolonged sitting and require reheating, especially in winter when there is no indoor heating. To solve this problem, food warming mats have emerged. For example, patent document CN213464653U discloses a "transparent warming table mat" with a far-infrared heating element fixedly installed at the bottom of the glass. The far-infrared heating element and the upper glass are integrated into a single structure, and heat is conducted through the heating element and the glass to keep the food warm. However, there are some inconveniences in actual use. First, the glass material is relatively heavy, making it inconvenient to move and easily damaged by impact. In addition, it is not easy to store when not in use. Utility Model Content

[0003] The purpose of this application is to provide a food insulation pad to solve at least one of the above-mentioned technical problems.

[0004] To solve the above-mentioned technical problems, this application provides a food insulation pad, including a pad body and a control unit connected to the pad body;

[0005] The pad body is made by an integral pressing process, and it includes a first silicone layer, a heating layer and a second silicone layer from top to bottom.

[0006] The heating layer includes a heating wire module and a fixing mesh. The heating wire module is fixed to the fixing mesh by sewing with threads. The heating wire module includes a wire body and heating wires wound around the outer wall of the wire body. The heating wire module is electrically connected to the control unit.

[0007] In the above implementation process, the control unit is used to connect to an external power source to provide power to the pad body, and at the same time realize temperature regulation and control. In this solution, the middle of the pad body is a heating layer, and a silicone layer is integrally formed on the outside of the heating layer. The heating layer includes a fixing mesh and a linear heating wire module. It can be understood that thermally conductive silicone can be used, which is flexible. The heating layer is composed of the fixing mesh and the heating wire module, and also has a certain degree of flexibility. The final pad body can be rolled up and folded, which is more convenient for daily use. Furthermore, the integral silicone structure is more stable, has stronger impact resistance, and has sufficient cushioning capacity. In addition, the fixing mesh and the heating wire module are sewn together with thread, which can ensure the stability of the heating wire module position. During the integral molding process, the heating wire module is not easy to be misaligned, and it is ensured to be located in the middle part of the two silicone layers, which provides a favorable condition for subsequent stable and uniform heating.

[0008] Preferably, the main body of the line includes a core layer and an outer sheath; the core layer is made of glass fiber material, and the outer sheath is made of silicone rubber material;

[0009] In the above process, glass fiber is a high-performance inorganic non-metallic material with advantages such as good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength. Silicone rubber is an organosilicon polymer material with good high-temperature resistance, low-temperature resistance, aging resistance, weather resistance, and excellent electrical insulation properties. It tightly wraps around the glass fiber core, providing not only good insulation protection to prevent leakage and short circuits, but also waterproofing, moisture-proofing, and dustproofing, protecting the internal glass fiber from external environmental corrosion. Using the above-mentioned main body of the wire in combination with the heating wire achieves a combination of insulation, high strength, and high heat resistance, extending service life while improving safety.

[0010] Preferably, the fixing mesh has a plurality of mesh openings;

[0011] In the above implementation process, the mesh can provide penetration points for the sewing of the heating wire module, achieving better fixation; in addition, the silicone layer is integrally formed, which can be further understood as the heating layer being placed between two silicone layers and then integrally formed; during the integral forming process, the silicone layer partially melts and extends into the mesh, which can improve the tightness of the connection and enhance the connection strength.

[0012] Preferably, the fixing net is made of polyester material;

[0013] In the above implementation process, this solution selects polyester material as the material for fixing net. Firstly, it has good elasticity, so it can meet the requirement of arbitrary deformation of the pad body; secondly, it has good heat resistance and high strength, which can adapt to the heating environment and maintain high cushioning and impact resistance performance under long-term use.

[0014] Preferably, the diameter of the heating wire is 0.2 mm, and the diameter of the main body of the wire is 1.2 mm;

[0015] Preferably, the winding spacing of the heating wire is 1.5 mm;

[0016] In the above implementation process, this solution obtained the above parameters by repeatedly testing the diameter of the heating wire, the diameter of the main body of the wire, and the winding spacing of the heating wire. Within this range, it can ensure that the main body of the pad can generate heat more evenly and has sufficient heating performance to meet the daily production needs.

[0017] Preferably, an over-temperature switch is provided between the first silicone layer and the second silicone layer, and the over-temperature switch is electrically connected to the control unit;

[0018] In the above implementation process, this solution further includes an over-temperature switch. When it detects that the temperature of the pad body exceeds a certain threshold, it can actively disconnect the circuit, thereby ensuring the safety of use.

[0019] Preferably, an NTC probe is provided in the control unit, and the NTC probe is used to detect the temperature of the pad body;

[0020] In the above process, the NTC probe can detect the temperature of the pad body, which facilitates temperature adjustment.

[0021] Preferably, a plurality of support feet are integrally formed at the bottom of the pad body;

[0022] In the above process, several support feet are integrally formed directly from the silicone layer, which effectively improves production efficiency, while multiple support feet work together to provide stable support.

[0023] Compared with the prior art, the beneficial effects of this application are as follows: The main body of the pad in this solution has a heating layer in the middle, and a silicone layer is integrally formed on the outside of the heating layer. The heating layer includes a fixing mesh and a linear heating wire module. It is understood that the silicone can be thermally conductive silicone, which is flexible. The heating layer is composed of the fixing mesh and the heating wire module, and also has a certain degree of flexibility. The final pad body can be rolled up and folded, which is more convenient for daily use. Furthermore, the integral silicone structure is more stable, has stronger impact resistance, and has sufficient cushioning capacity. In addition, the fixing mesh and the heating wire module in this solution are sewn together with thread, which can ensure the stability of the heating wire module position. During the integral molding process, the heating wire module is not easy to be misaligned, and it is ensured to be located in the middle part of the two silicone layers, which provides a favorable premise for subsequent stable and uniform heating. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the internal structure of one embodiment of this application;

[0027] Figure 3 yes Figure 2 Enlarged structural diagram of section A;

[0028] Figure 4 This is a partial structural schematic diagram of one embodiment of this application;

[0029] Figure 5 This is a schematic diagram of the layered structure of the pad body according to one embodiment of this application;

[0030] Figure 6 This is a schematic diagram of the structure of a fixed net according to one embodiment of this application;

[0031] Figure 7 This is a partial structural schematic diagram of a heating wire module according to one embodiment of this application;

[0032] Figure 8 This is a schematic diagram of the structure of the heating layer in one embodiment of this application;

[0033] The components are as follows: 10. Pad body; 11. Support foot; 20. Control unit; 21. Protective shell; 22. PCB board; 23. NTC probe; 24. Digital display tube; 25. Over-temperature switch; 31. First silicone layer; 32. Second silicone layer; 33. Heating layer; 331. Fixing mesh; 332. Heating wire module; 3321. Core layer; 3322. Outer protective layer; 3323. Heating wire. Detailed Implementation

[0034] The following drawings disclose several embodiments of this application. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this application. That is, in some embodiments of this application, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0035] It should be noted that all directional indications in the embodiments of this application, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0036] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit this application. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0037] To further understand the utility model content, features, and effects of this application, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings: Example

[0038] In family gatherings, when preparing a large number of dishes, the first dishes often cool down due to prolonged sitting and require reheating, especially in winter when there is no indoor heating. To address this issue, food warming mats have emerged. For example, patent document CN213464653U discloses a "transparent warming table mat" with a far-infrared heating element fixedly installed at the bottom of the glass. The far-infrared heating element and the upper glass are integrated into a single structure, and heat is conducted through the heating element and the glass to keep the food warm. However, there are some inconveniences in practical use. First, the glass material is relatively heavy, making it inconvenient to move and easily damaged by impact. In addition, it is difficult to store when not in use. To solve the above technical problems, this embodiment provides the following technical solution:

[0039] Please see Figure 1-8 This embodiment provides a food insulation pad, including a pad body 10 and a control unit 20 connected to the pad body 10;

[0040] Specifically, the pad body 10 is made by an integral pressing process, and it includes a first silicone layer 31, a heating layer 33 and a second silicone layer 32 from top to bottom.

[0041] Furthermore, the heating layer 33 includes a heating wire module 332 and a fixing mesh 331. The heating wire module 332 is fixed to the fixing mesh 331 by sewing with thread. The heating wire module 332 includes a wire body and a heating wire 3323 wound around the outer wall of the wire body. The heating wire module 332 is electrically connected to the control unit 20.

[0042] In the above scheme, the control unit 20 is used to connect to an external power source to provide power to the pad body 10, and at the same time realize temperature regulation control. In this scheme, the middle of the pad body 10 is a heating layer 33, and a silicone layer is integrally formed on the outside of the heating layer 33. The heating layer 33 includes a fixing mesh 331 and a linear heating wire module 332. It can be understood that the silicone can be thermally conductive silicone, which is flexible. The heating layer 33 is composed of the fixing mesh 331 and the heating wire module 332, which also has a certain degree of flexibility. The final pad body 10 can be rolled up and folded, which is more convenient in daily use. Furthermore, the integrally formed structure of silicone is more stable, has stronger impact resistance, and has sufficient cushioning capacity. In addition, the fixing mesh 331 and the heating wire module 332 are sewn together with silk thread, which can ensure the stability of the position of the heating wire module 332. During the integral molding process, the heating wire module 332 is not easy to be misaligned, and at the same time, it is ensured to be located in the middle part of the two silicone layers, which provides a favorable condition for subsequent stable and uniform heating.

[0043] For details, please see Figure 7 The main body of the line includes a core layer 3321 and an outer sheath 3322; the core layer 3321 is made of glass fiber material, and the outer sheath 3322 is made of silicone rubber material.

[0044] In the above scheme, glass fiber is a high-performance inorganic non-metallic material with advantages such as good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength; silicone rubber is an organosilicon polymer material with good high-temperature resistance, low-temperature resistance, aging resistance, weather resistance, and excellent electrical insulation properties. It tightly wraps around the glass fiber core, providing not only good insulation protection to prevent leakage and short circuits, but also waterproofing, moisture-proofing, and dustproofing, protecting the internal glass fiber from external environmental corrosion. Using the above-mentioned wire body in conjunction with the 3323 heating wire combines insulation, high strength, and high heat resistance, extending service life while improving safety.

[0045] For details, please see Figure 6 The fixed mesh 331 has a number of mesh openings;

[0046] In the above scheme, the mesh can provide penetration points for the sewing of the heating wire module 332, so as to achieve better fixation; in addition, the silicone layer is integrally formed, which can be further understood as the heating layer 33 is placed between two silicone layers and then integrally formed; during the integral forming process, the silicone layer partially melts and extends into the mesh, which can improve the tightness of the connection and improve the connection strength.

[0047] Furthermore, in one embodiment, the fixing net 331 is made of polyester material;

[0048] In the above scheme, polyester material is selected as the material of the fixing net 331. Firstly, it has good elasticity, so it can meet the requirement of arbitrary deformation of the pad body 10; secondly, it has good heat resistance and high strength, which can adapt to the heating environment and maintain high buffering and impact resistance performance under long-term use.

[0049] Specifically, in one embodiment, the diameter of the heating wire 3323 is 0.2 mm, and the diameter of the main body of the wire is 1.2 mm;

[0050] Furthermore, the winding spacing of the heating wire 3323 is 1.5mm;

[0051] In the above solution, the above parameters were obtained by repeatedly testing the diameter of the heating wire 3323, the diameter of the main body of the wire, and the winding spacing of the heating wire 3323. Within this range, it can be ensured that the main body of the pad 10 can generate heat more evenly and has sufficient heating performance to meet the daily production needs.

[0052] For details, please see Figure 4 An over-temperature switch 25 is provided between the first silicone layer 31 and the second silicone layer 32, and the over-temperature switch 25 is electrically connected to the control unit 20.

[0053] In the above scheme, this scheme further includes an over-temperature switch 25. When it detects that the temperature of the pad body 10 exceeds a certain threshold, it can actively disconnect the circuit, thereby ensuring the safety of use.

[0054] For details, please see Figure 2-3 An NTC probe 23 is provided in the control unit 20. The NTC probe 23 is used to detect the temperature of the pad body 10.

[0055] In the above scheme, the NTC probe 23 can detect the temperature of the pad body 10, which facilitates temperature adjustment.

[0056] For details, please see Figure 4 Several support feet 11 are integrally formed at the bottom of the pad body 10;

[0057] In the above solution, several support feet 11 are integrally formed from silicone layers, which effectively improves production efficiency, while multiple support feet 11 work together to provide stable support.

[0058] Specifically, the control unit 20 includes a PCB board 22 and a protective shell 21 covering the PCB board 22. A digital display tube 24 is provided on the PCB board 22, which can be used to display the real-time temperature.

[0059] Furthermore, in one embodiment, LED ambient lights are also provided on the PCB board 22.

[0060] It should be noted that the circuit connection method and control principle for realizing temperature control and display are relatively mature technologies in the prior art. Therefore, the connection method and control principle between the control unit 20 and the external power supply, as well as the connection method and control principle between the control unit 20 and the over-temperature switch 25 and the NTC probe 23, will not be further described in this application. However, it is understood that this does not affect the understanding of the overall solution by those skilled in the art.

[0061] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application shall fall within the scope of the technical solution of this application.

Claims

1. A food warming pad characterized by: The cushion plate body and the control unit connected with the cushion plate body are included; The cushion plate body is made by an integrated pressing process, and comprises a first silica gel layer, a heating layer and a second silica gel layer from top to bottom; The heating layer comprises a heating wire module and a fixing net, the heating wire module is fixed on the fixing net by sewing with silk threads; the heating wire module comprises a wire body and a heating wire wound on the outer wall of the wire body; the heating wire module is electrically connected with the control unit.

2. The food warming pad of claim 1, wherein: The wire body comprises a core layer and an outer protective layer; the core layer is made of glass fiber material, and the outer protective layer is made of silicone rubber material.

3. The food warming pad of claim 1, wherein: The fixing net is formed with a plurality of mesh holes.

4. The food warming pad of claim 3, wherein: The fixing net is made of polyester material.

5. The food warming pad of any of claims 1-4, wherein: The diameter of the heating wire is 0.2mm, and the diameter of the wire body is 1.2mm.

6. The food warming pad of claim 5, wherein: The winding interval of the heating wire is 1.5mm.

7. The food warming pad of any of claims 1-4, wherein: An over-temperature temperature switch is arranged between the first silica gel layer and the second silica gel layer, and the over-temperature temperature switch is electrically connected with the control unit.

8. The food warming pad of claim 7, wherein: An NTC probe is arranged in the control unit, and the NTC probe is used for detecting the temperature of the cushion plate body.

9. The food warming pad of claim 1, wherein: A plurality of supporting legs are integrally formed at the bottom of the cushion plate body.

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