Heating device and heater
By adopting a combined structure of heating units, conductive units and insulating thermal coatings in the PTC heater, the problems of fragility and low heat transfer efficiency of the insulating structure are solved, and the insulation performance improvement, heat transfer performance improvement and cost reduction are achieved.
Patent Information
- Application Number
- CN202421534966.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-07-01
AI Technical Summary
The insulating structure of the existing PTC heaters is prone to fragmentation during assembly, has low heat transfer efficiency, is complex and has high cost, and has poor insulation performance and conductive units integration.
The combined structure of heating unit, conductive unit and insulating thermal coating is adopted. The insulating thermal coating covers the side of the conductive unit facing away from the heating unit, and can be coated with an insulating frame. An integrated insulating block is formed by powder spraying and electrostatic adsorption, and the addition of thermal filler increases the thermal conductivity coefficient.
The overall integration and insulation performance of the insulating structure and the conductive unit are improved, the heat transfer performance is improved, the assembly steps are simplified, the production cycle is shortened, and the cost is reduced.
Smart Images
Figure CN223194849U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heaters, in particular to a heating device and a heater. Background Art
[0002] At present, when configuring the relevant insulation structure, the existing PTC heaters all adopt a multi-layer insulation structure to ensure their insulation performance, such as using an insulation board and insulating yellow paper to achieve insulation. However, since the insulation board is a ceramic board, the ceramic board is easy to break when assembled with the core body, and it is not easy to fill the contact gap, which leads to low heat transfer efficiency and poor integrity with the electrical conductor. The assembly process is complicated, which leads to a long assembly cycle and high production cost. Utility Model Content
[0003] The purpose of the present invention is to provide a heating device and a heater, which can increase the integrity of the insulating structure and the conductive unit, increase its insulation performance, and improve its heat transfer performance, simplify the assembly steps, shorten the production cycle, and reduce the production cost.
[0004] The embodiment of the present utility model is achieved as follows:
[0005] In a first aspect, the utility model provides a heating device, which includes a heating unit, a conductive unit, and an insulating thermal conductive coating;
[0006] The conductive unit is connected to the heating unit, and the insulating thermal conductive coating is covered on a side of the conductive unit facing away from the heating unit.
[0007] In an optional embodiment, the heating device further includes an insulating frame, which is wrapped around the outer periphery of the heating unit.
[0008] In an optional embodiment, along the direction from the conductive unit to the heating unit, the projection of the heating unit is located within the outline of the conductive unit, and the portion of the conductive unit not in contact with the heating unit is covered with an insulating thermal conductive coating.
[0009] In an optional embodiment, the insulating frame is wrapped around the periphery of the heating unit and the conductive unit.
[0010] In an optional embodiment, the insulating frame is provided with a clearance groove, and the portion of the conductive unit that is not in contact with the heating unit is accommodated in the clearance groove.
[0011] In an optional embodiment, the portion of the conductive unit that is not in contact with the heating unit is loosely matched with the relief groove.
[0012] In an optional embodiment, the conductive unit includes one or more conductive sheets.
[0013] In an optional embodiment, the thickness of the insulating thermal conductive coating layer is 150 μm-250 μm.
[0014] In an optional embodiment, a plurality of slide grooves or a plurality of protrusions are provided on one side of the conductive unit connected to the insulating thermal conductive coating layer, and the plurality of slide grooves or the plurality of protrusions are arranged in an array.
[0015] In a second aspect, the present invention provides a heater, which includes the above-mentioned heating device.
[0016] The beneficial effects of the embodiments of the present utility model include:
[0017] The heating device includes a heating unit, a conductive unit, and an insulating thermally conductive coating. The conductive unit is connected to the heating unit, and the insulating thermally conductive coating is applied to the side of the conductive unit facing away from the heating unit. This heating device enhances the integrity of the insulating structure and the conductive unit, increasing insulation performance and improving heat transfer performance. It also simplifies assembly steps, shortens production cycles, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.
[0019] Figure 1 This is a schematic structural diagram of a heating device in an embodiment of the present utility model;
[0020] Figure 2 This is a cross-sectional view of a heating device in an embodiment of the present utility model;
[0021] Figure 3 for Figure 2 Partial schematic diagram at point A in the middle.
[0022] Icon: 100-heating device; 110-heating unit; 120-conductive unit; 130-insulating thermal conductive coating; 140-insulating frame; 141-allowance groove. DETAILED DESCRIPTION
[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.
[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.
[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.
[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0027] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.
[0028] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.
[0029] Please refer to Figure 1-Figure 3 , this embodiment provides a heating device 100, the heating device 100 includes a heating unit 110, a conductive unit 120 and an insulating thermal conductive coating 130;
[0030] The conductive unit 120 is connected to the heating unit 110 , and the insulating thermal conductive coating 130 covers a side of the conductive unit 120 facing away from the heating unit 110 .
[0031] Please refer to Figure 1-Figure 3 , the working principle of the heating device 100 is:
[0032] The heating device 100 includes a heating unit 110, a conductive unit 120, and an insulating thermally conductive coating 130. The conductive unit 120 is connected to the heating unit 110, and the insulating thermally conductive coating 130 covers the side of the conductive unit 120 facing away from the heating unit 110. The heating device 100 enhances the integrity of the insulating structure and the conductive unit 120, increasing their insulation performance and improving their heat transfer performance. It also simplifies assembly steps, shortens production cycles, and reduces production costs.
[0033] It should be noted that the heating unit 110 can be a PTC heating structure, and the insulating thermal conductive coating 130 can be applied by powder spraying or other methods, and electrostatically adsorbed on its surface by the conductive sheet, and finally cured at high temperature to form a whole with the conductive unit 120; thus, the insulating thermal conductive coating 130 is applied to the conductive unit 120 in an unfixed form, and finally cured into a solid form, becoming an insulating block with good thermal conductivity, and becoming one with the conductive unit 120. The insulating block is composed of epoxy resin and curing agent. In addition, the thermal conductivity coefficient can be improved by adding fillers with good thermal conductivity to the insulating thermal conductive coating 130. In addition, the insulating block can withstand an operating temperature of more than 250°C. Thus, the insulating layer and the conductive sheet become one, which reduces thermal resistance and simplifies the assembly process of the heating pack.
[0034] For further information, please refer to Figure 1-Figure 3 In this embodiment, in order to improve its insulation performance and enhance its overall structural strength, the heating device 100 further includes an insulating frame 140, which is wrapped around the outer periphery of the heating unit 110. The insulating frame 140 can be made of plastic or rubber.
[0035] In addition, when configuring the above-mentioned conductive unit 120, the structural size of the conductive unit 120 is made larger than that of the heating unit 110. This configuration makes one side of the heating unit 110 completely in contact with the conductive unit 120, and the outer edge of the conductive unit 120 is located outside the heating unit 110, that is, the outer edge of the conductive unit 120 does not contact the heating unit 110. Based on this, in order to improve the overall insulation performance of the conductive unit 120, the projection of the heating unit 110 along the direction from the conductive unit 120 to the heating unit 110 is located within the outline of the conductive unit 120, and the parts of the conductive unit 120 that are not in contact with the heating unit 110 are covered with an insulating thermal conductive coating 130.
[0036] The purpose of such an arrangement is to ensure that the surfaces of the conductive unit 120 that are not in contact with the heating unit 110 are covered by the insulating thermal conductive coating 130 , thereby improving the insulation performance of the conductive unit 120 .
[0037] In addition, please refer to Figure 1-Figure 3 On the basis of the above structure, when configuring the insulating frame 140, the insulating frame 140 is wrapped around the periphery of the heating unit 110 and the conductive unit 120. The purpose is to improve the overall strength of the structure and protect the conductive unit 120.
[0038] As can be seen from the above description, since the outer edge of the conductive unit 120 is located outside the conductive unit 120, to improve the protection of the conductive unit 120, the insulating frame 140 is configured with a clearance groove 141. The portion of the conductive unit 120 not in contact with the heating unit 110 is accommodated in the clearance groove 141. Furthermore, to facilitate the mating of the conductive unit 120 and the insulating frame 140, the portion of the conductive unit 120 not in contact with the heating unit 110 is spaced apart and fits into the clearance groove 141.
[0039] When configuring the conductive unit 120, the conductive unit 120 may include one or more conductive sheets. That is, the conductive unit 120 may be a single conductive sheet or a combination of multiple conductive sheets.
[0040] For further information, please refer to Figure 1-Figure 3 Based on the above content, in this embodiment, when forming the above-mentioned insulating thermal conductive coating layer 130 , the thickness of the insulating thermal conductive coating layer 130 can be made to be 150 μm-250 μm.
[0041] Furthermore, to enhance the adhesion stability between the insulating thermally conductive coating 130 and the conductive element 120, multiple grooves or protrusions are provided on the side of the conductive element 120 where it connects to the insulating thermally conductive coating 130. These grooves or protrusions are arranged in an array. This arrangement allows the size of the grooves or protrusions to be adjusted to create unevenness or improve the roughness of the side of the conductive element 120 where it connects to the insulating thermally conductive coating 130, thereby enhancing the adhesion between the insulating thermally conductive coating 130 and the conductive element 120, thereby increasing their stability and extending their service life.
[0042] In summary, please refer to Figure 1-Figure 3The heating device 100 includes at least one heating unit 110, and both sides of the heating unit 110 are respectively in contact with the inner surface of the conductive sheet in an electrically conductive manner. In addition, an insulating thermal conductive coating 130 is provided on the surface of the conductive sheet that is not in contact with the heating unit 110; wherein, the insulating thermal conductive coating 130 can be applied by powder spraying, and is electrostatically adsorbed on the surface of the conductive sheet through the conductive sheet, and finally cured at high temperature to form an integral body with the conductive sheet; thus, the insulating thermal conductive coating 130 is applied to the conductive sheet in an unfixed form, and finally cured into a solid form, becoming an insulating block with good thermal conductivity, and becoming an integral body with the conductive sheet.
[0043] The insulating block is composed of epoxy resin and a curing agent. Furthermore, a filler with excellent thermal conductivity can be added to the insulating thermal conductive coating 130 to achieve a thermal conductivity coefficient of over 1W / mK. The filler is composed of aluminum oxide. Furthermore, the insulating block can withstand operating temperatures exceeding 250°C, has a thickness between 150μm and 250μm, and has a dielectric strength of 2000VAC. Thus, the insulating layer and the conductive sheet are integrated, reducing thermal resistance and simplifying the assembly process of the heating pack.
[0044] Based on the above, please refer to Figure 1-Figure 3 The present invention provides a heater, which includes the above-mentioned heating device 100. That is, the heater can increase the integrity of the insulation structure and the conductive unit 120 by adopting the above-mentioned heating device 100, increase its insulation performance, and improve its heat transfer performance, simplify the assembly steps, shorten the production cycle, and reduce the production cost.
[0045] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.
Claims
1. A heating device, characterized in that: The heating device includes a heating unit, a conductive unit and an insulating thermal conductive coating; The conductive unit is connected to the heating unit, and the insulating thermal conductive coating is covered on a side of the conductive unit facing away from the heating unit; The heating device further includes an insulating frame, which is wrapped around the outer periphery of the heating unit.
2. The heating device according to claim 1, characterized in that: Along the direction from the conductive unit to the heating unit, the projection of the heating unit is located within the outline of the conductive unit, and the portion of the conductive unit not in contact with the heating unit is covered with the insulating thermal conductive coating.
3. The heating device according to claim 2, characterized in that: The insulating frame covers the outer periphery of the heating unit and the conductive unit.
4. The heating device according to claim 3, characterized in that: The insulating frame is provided with a recess, and the portion of the conductive unit that is not in contact with the heating unit is accommodated in the recess.
5. The heating device according to claim 4, characterized in that: The portion of the conductive unit that is not in contact with the heating unit is loosely matched with the clearance groove.
6. The heating device according to claim 1, characterized in that: The conductive unit includes one or more conductive sheets.
7. The heating device according to any one of claims 1 to 6, characterized in that: The thickness of the insulating thermal conductive coating is 150 μm-250 μm.
8. The heating device according to claim 7, characterized in that: A plurality of slide grooves or a plurality of protrusions are provided on one side of the conductive unit connected to the insulating thermal conductive coating, and the plurality of slide grooves or the plurality of protrusions are arranged in an array.
9. A heater, characterized in that: The heater comprises the heating device according to any one of claims 1 to 8.