A high temperature resistant insulating silicone rubber electric heater

Abstract

The utility model discloses a kind of high-temperature-resistant insulating silicone rubber electric heater, it is related to electric heater technical field, including electric heater component, electric heater component is composed of silicone rubber base material and electric heating element, the heating end of electric heating element is located inside silicone rubber base material, electric heating element is arranged in S shape inside silicone rubber base material, silicone rubber base material is fixedly connected with heat conduction component inside.The utility model, by the silicone rubber base material of electric heater component provides high-temperature-resistant insulating carrier for whole, the electric heating element arranged in S shape generates heat after electrification, its heating end is fixedly connected by with evenly distributed heat-absorbing plate, can quickly transfer heat to heat conduction component;After heat-absorbing plate efficiently absorbs concentrated heat, with the wrapping of silicone rubber base material and its distribution characteristics, heat is diffused to all around, avoid the formation of local high temperature around electric heating element.

Description

Technical Field

[0001] This utility model relates to the field of electric heater technology, and in particular to a high-temperature resistant insulating silicone rubber electric heater. Background Technology

[0002] High-temperature resistant insulating silicone rubber electric heaters are flexible electric heating devices made of silicone rubber as the base material and combined with conductive heating elements. They have excellent high-temperature resistance, insulation and flexibility, and can closely fit irregular heating surfaces. High-temperature resistant insulating silicone rubber electric heaters are often placed in the center of the area to be heated, so that heat can be transferred more evenly. Their core function is to convert electrical energy into heat energy to provide stable and controllable heating for the target object or environment. They are widely used in industrial equipment, electronic instruments, special environments and other scenarios, and can effectively improve heating efficiency and effect.

[0003] However, in existing technologies, due to the inherent characteristics of silicone rubber substrates, their thermal conductivity is significantly lower than that of materials such as metals. This characteristic directly hinders heat transfer within the heater and to the heated object, making rapid and uniform diffusion difficult. When applications require high-power heating or rapid temperature rise, a large amount of heat energy converted from electrical energy cannot be transferred out through the silicone rubber substrate in time, resulting in localized heat accumulation. This localized heat accumulation not only significantly reduces overall heat transfer efficiency, decreasing the proportion of energy converted into effective heat and causing energy waste, but more seriously, localized overheating accelerates the aging process of silicone rubber, causing its insulation performance, flexibility, and other key indicators to deteriorate rapidly, shortening the heater's lifespan. It may even lead to safety hazards such as leakage and short circuits due to material performance degradation, affecting the stable operation and safe use of the equipment. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a high-temperature resistant insulating silicone rubber electric heater.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-temperature resistant insulating silicone rubber electric heater, comprising an electric heater assembly, the electric heater assembly being composed of a silicone rubber substrate and an electric heating element, the heating end of the electric heating element being located inside the silicone rubber substrate, the electric heating element being arranged in an S-shape inside the silicone rubber substrate, a heat-conducting component being fixedly connected inside the silicone rubber substrate, the heat-conducting component including multiple heat-absorbing plates, the multiple heat-absorbing plates being evenly distributed inside the silicone rubber substrate, and the heat-absorbing plates being fixedly connected to the heating end of the electric heating element.

[0006] Preferably, a heat absorption frame is fixedly connected between multiple heat absorption plates, and the heat absorption frame is X-shaped.

[0007] Preferably, multiple heat dissipation heads are fixedly connected to the upper part of the heat absorption plate, and the multiple heat dissipation heads are evenly distributed on the upper part of the heat absorption plate.

[0008] Preferably, a heat sink is fixedly connected to the upper part of the silicone rubber substrate, and the bottom of the heat sink is fixedly connected to the heat sink head.

[0009] Preferably, both the heat absorber plate and the heat absorber frame are made of copper alloy, and the surfaces of both the heat absorber plate and the heat absorber frame are plated with a nickel layer.

[0010] Preferably, the heat sink has multiple strip-shaped heat dissipation grooves on the side away from the silicone rubber substrate. The multiple strip-shaped heat dissipation grooves are evenly distributed along the length of the heat sink, and the spacing between adjacent heat dissipation grooves is 2-5mm.

[0011] Preferably, the connection between the electric heating element and the heat absorption plate is wrapped with a thermally conductive silicone layer, the thickness of which is 0.5-1mm, and it is tightly bonded to the interior of the silicone rubber substrate.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, the silicone rubber substrate of the electric heater assembly provides a high-temperature resistant insulating carrier for the whole. The S-shaped electric heating element generates heat after being energized. Its heating end is fixedly connected to the uniformly distributed heat absorption plate, which can quickly transfer the heat to the heat conduction component. After the heat absorption plate efficiently absorbs the concentrated heat, it diffuses the heat to the surrounding area with the help of the silicone rubber substrate and its own distribution characteristics, avoiding the formation of local high temperature around the electric heating element. Under this structural operation relationship, the S-shaped electric heating element increases the heating coverage area. Combined with the rapid heat absorption and diffusion effect of the heat absorption plate, it effectively solves the problem of heat transfer obstruction caused by the low thermal conductivity of the silicone rubber substrate. It not only improves the heat transfer efficiency and reduces energy waste, but also reduces the aging effect of local overheating on the silicone rubber substrate, extends the service life of the heater, and ensures the safety and stability during use.

[0014] 2. In this utility model, after the electric heating element is energized and heated, its heat is first quickly transferred to the copper alloy heat-absorbing plate through the thermally conductive silicone layer wrapped around the connection part. This thermally conductive silicone layer is tightly bonded to the inside of the silicone rubber substrate, which greatly reduces the contact thermal resistance. The X-shaped heat-absorbing frame connects multiple heat-absorbing plates into a whole. With the help of the high thermal conductivity of copper alloy and the stability of the surface nickel layer, the heat is quickly diffused in the heat-absorbing component, avoiding local accumulation.

[0015] 3. In this invention, multiple heat dissipation heads on the upper part of the heat-absorbing plate conduct heat to the heat dissipation plate on the upper part of the silicone rubber substrate. The strip-shaped heat dissipation grooves on the side of the heat dissipation plate away from the substrate further expand the heat dissipation area, accelerating the transfer of heat to the external heated object. This multi-level heat-conducting structure works in synergy, preserving the high-temperature resistance and insulation properties of the silicone rubber substrate, while overcoming the bottleneck of low thermal conductivity of silicone rubber through the cooperation of metal heat-conducting components and heat dissipation structure. This achieves rapid and uniform heat transfer, significantly improving thermal efficiency while reducing the aging problem of silicone rubber caused by local overheating, extending the service life of the heater. Furthermore, the nickel layer on the copper alloy surface and the tightly bonded thermally conductive silicone layer further ensure the safety and stability of the equipment. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of a high-temperature resistant insulating silicone rubber electric heater is provided for this utility model;

[0017] Figure 2 This utility model provides a cross-sectional three-dimensional structural diagram of the silicone rubber substrate in a high-temperature resistant insulating silicone rubber electric heater.

[0018] Figure 3 This utility model provides a three-dimensional structural diagram of a heat sink in a high-temperature resistant insulating silicone rubber electric heater.

[0019] Figure 4 This invention provides a top view of the electric heating element in a high-temperature resistant insulating silicone rubber electric heater.

[0020] Legend: 1. Electric heater assembly; 11. Silicone rubber substrate; 12. Electric heating element; 2. Heat conduction assembly; 21. Heat absorption plate; 22. Heat absorption frame; 23. Heat sink; 3. Heat sink plate. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: As Figures 1-4As shown, this utility model provides a high-temperature resistant insulating silicone rubber electric heater, including an electric heater assembly 1. The electric heater assembly 1 is composed of a silicone rubber substrate 11 and an electric heating element 12. The heating end of the electric heating element 12 is located inside the silicone rubber substrate 11. The electric heating element 12 is arranged in an S-shape inside the silicone rubber substrate 11. A heat-conducting component 2 is fixedly connected inside the silicone rubber substrate 11. The heat-conducting component 2 includes multiple heat-absorbing plates 21. The multiple heat-absorbing plates 21 are evenly distributed inside the silicone rubber substrate 11, and the heat-absorbing plates 21 are fixedly connected to the heating end of the electric heating element 12.

[0024] The specific setup and function of this embodiment are described below. The silicone rubber substrate 11 of the electric heater assembly 1 provides a high-temperature resistant insulating carrier for the whole. The S-shaped electric heating element 12 generates heat after being energized. Its heating end is fixedly connected to the uniformly distributed heat absorption plate 21, which can quickly transfer the heat to the heat-conducting component 2. After the heat absorption plate 21 efficiently absorbs the concentrated heat, it diffuses the heat to the surrounding area with the help of the silicone rubber substrate 11 and its own distribution characteristics, avoiding the formation of local high temperature around the electric heating element 12. Under this structural operation, the S-shaped electric heating element 12 increases the heating coverage area. Combined with the rapid heat absorption and diffusion effect of the heat absorption plate 21, it effectively solves the problem of heat transfer obstruction caused by the low thermal conductivity of the silicone rubber substrate 11. This not only improves the heat transfer efficiency and reduces energy waste, but also reduces the aging effect of local overheating on the silicone rubber substrate 11, extends the service life of the heater, and ensures safety and stability during use.

[0025] Example 2: Figures 1-4 As shown, a heat absorption frame 22 is fixedly connected between multiple heat absorption plates 21. The heat absorption frame 22 is X-shaped. Multiple heat dissipation heads 23 are fixedly connected to the upper part of the heat absorption plates 21. The multiple heat dissipation heads 23 are evenly distributed on the upper part of the heat absorption plates 21. A heat dissipation plate 3 is fixedly connected to the upper part of the silicone rubber substrate 11. The bottom of the heat dissipation plate 3 is fixedly connected to the heat dissipation heads 23. Both the heat absorption plates 21 and the heat absorption frame 22 are made of copper alloy, and the surfaces of the heat absorption plates 21 and the heat dissipation frame 22 are plated with a nickel layer. Multiple strip-shaped heat dissipation grooves are opened on the side of the heat dissipation plate 3 away from the silicone rubber substrate 11. The multiple strip-shaped heat dissipation grooves are evenly distributed along the length direction of the heat dissipation plate 3, and the spacing between adjacent heat dissipation grooves is 2-5mm. The connection part between the electric heating element 12 and the heat absorption plate 21 is wrapped with a thermally conductive silicone layer. The thickness of the thermally conductive silicone layer is 0.5-1mm, and it is tightly attached to the inside of the silicone rubber substrate 11.

[0026] The overall effect of this embodiment is that after the electric heating element 12 is powered on and heats up, its heat is first quickly transferred to the copper alloy heat-absorbing plate 21 through the 0.5-1mm thick thermally conductive silicone layer wrapped around the connection part. This thermally conductive silicone layer is tightly bonded to the inside of the silicone rubber substrate 11, which greatly reduces the contact thermal resistance. The X-shaped heat-absorbing frame 22 connects multiple heat-absorbing plates 21 into a whole. With the help of the high thermal conductivity of the copper alloy and the stability of the surface nickel layer, the heat is quickly diffused in the heat-absorbing component, avoiding local accumulation. Multiple heat dissipation heads 23 on the upper part of the heat-absorbing plate 21 conduct heat to the heat dissipation plate 3 on the upper part of the silicone rubber substrate 11. The strip heat dissipation grooves on the side of the heat dissipation plate 3 away from the substrate are spaced 2-5mm apart, which further expands the heat dissipation area and accelerates the transfer of heat to the external heated object. The synergistic operation of this multi-level thermal conductive structure not only retains the high-temperature insulation properties of the silicone rubber substrate 11, but also overcomes the bottleneck of low thermal conductivity of silicone rubber through the cooperation of metal thermal conductive components and heat dissipation structure. This achieves rapid and uniform heat transfer, significantly improving thermal efficiency while reducing the aging problem of silicone rubber caused by local overheating and extending the service life of the heater. Furthermore, the nickel layer on the copper alloy surface and the tightly bonded thermally conductive silicone layer further ensure the safety and stability of the equipment.

[0027] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A high-temperature resistant insulating silicone rubber electric heater, comprising an electric heater assembly (1), wherein the electric heater assembly (1) is composed of a silicone rubber substrate (11) and an electric heating element (12), wherein the heating end of the electric heating element (12) is located inside the silicone rubber substrate (11), characterized in that: The electric heating element (12) is arranged in an S-shape inside the silicone rubber substrate (11). A heat-conducting component (2) is fixedly connected inside the silicone rubber substrate (11). The heat-conducting component (2) includes multiple heat-absorbing plates (21). The multiple heat-absorbing plates (21) are evenly distributed inside the silicone rubber substrate (11), and the heat-absorbing plates (21) are fixedly connected to the heating end of the electric heating element (12).

2. The high-temperature resistant insulating silicone rubber electric heater according to claim 1, characterized in that: A heat-absorbing frame (22) is fixedly connected between the plurality of heat-absorbing plates (21), and the heat-absorbing frame (22) is X-shaped.

3. The high-temperature resistant insulating silicone rubber electric heater according to claim 1, characterized in that: Multiple heat dissipation heads (23) are fixedly connected to the upper part of the heat absorption plate (21), and the multiple heat dissipation heads (23) are evenly distributed on the upper part of the heat absorption plate (21).

4. A high-temperature resistant insulating silicone rubber electric heater according to claim 1, characterized in that: A heat sink plate (3) is fixedly connected to the upper part of the silicone rubber substrate (11), and the bottom of the heat sink plate (3) is fixedly connected to the heat sink head (23).

5. A high-temperature resistant insulating silicone rubber electric heater according to claim 1, characterized in that: The heat-absorbing plate (21) and the heat-absorbing frame (22) are both made of copper alloy, and the surfaces of the heat-absorbing plate (21) and the heat-absorbing frame (22) are plated with a nickel layer.

6. A high-temperature resistant insulating silicone rubber electric heater according to claim 4, characterized in that: The heat sink (3) has multiple strip-shaped heat sinks on the side away from the silicone rubber substrate (11). The multiple strip-shaped heat sinks are evenly distributed along the length of the heat sink (3), and the distance between adjacent heat sinks is 2-5mm.

7. A high-temperature resistant insulating silicone rubber electric heater according to claim 1, characterized in that: The connection between the electric heating element (12) and the heat absorption plate (21) is wrapped with a thermally conductive silicone layer. The thickness of the thermally conductive silicone layer is 0.5-1mm, and it is tightly attached to the inside of the silicone rubber substrate (11).

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