Heating core and electric heater
By using conductive, insulating, and adhesive layers in the heating core for bonding, the heating component is tightly integrated with the heat transfer channel, solving the problem of insufficient thermal conductivity in PTC heaters and achieving efficient heat transfer and stable thermal management.
Patent Information
- Application Number
- CN202423323697.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-31
AI Technical Summary
The thermal conductivity of existing PTC heaters cannot meet the high requirements of electric vehicle thermal management systems, and traditional air-heated PTC heating poses risks.
The heating core design incorporates a heating element that is bonded to the heat transfer channel via a conductive layer, an insulating layer, and an adhesive layer, forming a tight connection that reduces contact thermal resistance and improves heat transfer efficiency.
It achieves efficient heat transfer between the heating element and the heat transfer channel, is simple to assemble, has few parts, and has good heat uniformity and stability.
Smart Images
Figure CN223729939U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electric heater technical field, specifically, relate to a kind of heating core body and electric heater. BACKGROUND
[0002] Under the condition that the resources of the earth gradually reduce, relative to traditional fuel automobile, as new energy, electric automobile is promoted greatly, and thus the progress of PTC heater required by electric vehicle is faster and faster. The cooling liquid of automobile engine is used as the heat source of automobile air conditioning warm air for traditional automobile, and for ordinary electric vehicle, only wind-heat PTC heater can be used as the heat source of its warm air. But pure wind-heat PTC heating has certain risk.
[0003] The working principle of the existing hydrothermal PTC heater is that the heat of the PTC assembly or PTC heating sheet is transmitted to the cooling liquid through the heat transfer channel. The cooling liquid realizes the bearing and flowing medium through the heat exchanger core, and the heat is transferred to the required place through the medium.
[0004] However, with the higher requirements of the heat management system on the heat conduction effect of the electric heater, the heat conduction of the PTC heater in the prior art cannot meet the demand. UTILITY MODEL CONTENTS
[0005] The purpose of the utility model includes, for example, to provide a kind of heating core body and electric heater, and the contact thermal resistance between its heating assembly and heat transfer channel is smaller, and heat transfer is better.
[0006] The embodiment of the utility model can be realized as follows:
[0007] In a first aspect, the utility model provides a kind of heating core body, comprising:
[0008] Channel assembly and a plurality of heating assemblies;
[0009] The channel assembly includes a plurality of heat transfer channels arranged in layers;Each of the heating assembly is arranged between adjacent heat transfer channels;
[0010] The heating assembly includes a heating unit and at least one connecting mechanism;Along the thickness direction of the heating unit, the heating unit is covered on the heat transfer channel through the connecting mechanism;
[0011] The connecting mechanism includes a conductive layer and an insulating unit, and the insulating unit includes an insulating layer and two adhesive layers;Along the thickness direction of the heating unit, the heating unit, the conductive layer and the insulating layer are sequentially laminated, and one of the adhesive layers is bonded between the insulating layer and the conductive layer, and the other adhesive layer is bonded on the heat transfer channel away from the side of the insulating layer from the conductive layer;The adhesive layer is configured to have thermal conductivity.
[0012] In an optional embodiment, the heat transfer channel is a flat tube, and the clamping space is formed between adjacent flat tubes, and the heating assembly is arranged in the clamping space.
[0013] In an optional embodiment, the insulation layer is a film.
[0014] In an optional embodiment, the heating unit is a PTC element.
[0015] In an optional embodiment, in the heating assembly, when the number of the connecting mechanisms is two, the two connecting mechanisms are arranged on both sides of the thickness of the heating unit.
[0016] In an optional embodiment, in the heating assembly, the thickness of the two connecting mechanisms is the same.
[0017] In an optional embodiment, in the insulation unit, the thickness of each adhesive layer is consistent along the length direction of the insulation layer.
[0018] In an optional embodiment, along the length direction of the heating assembly, the length of the connecting mechanism is greater than the length of the heating unit.
[0019] In an optional embodiment, the adhesive layer is bonded to the conductive layer or the heat transfer channel through high-temperature curing.
[0020] In a second aspect, the utility model provides a kind of electric heater, and the electric heater includes the heating core of any one of the foregoing embodiments.
[0021] The beneficial effects of the embodiments of the utility model include, for example:
[0022] The heating core comprises a flow channel assembly and a plurality of heating assemblies. The heating assemblies are arranged between the heat-conducting flow channels arranged in a stack to transport the heat generated by the heating assemblies through the heat-conducting flow channels. In order to ensure better heat conduction between the heating assemblies and the heat-conducting flow channels, the heating assembly comprises a heating unit and at least one connecting mechanism, wherein the heating unit is used to generate heat, and the connecting mechanism can directly transmit the heat generated by the heating unit to the heat-conducting flow channel through an adhesive layer. Specifically, the surface of the heating unit is covered with an electrically conductive layer, the side of the electrically conductive layer away from the heating unit is bonded to an insulating layer through an adhesive layer, and the side of the insulating layer away from the electrically conductive layer is bonded to the heat-conducting flow channel through another adhesive layer. That is, the heating assembly and the heat-conducting flow channel are bonded and fixed together by the adhesive on the insulating layer. In this way, the electrically conductive layer, the insulating layer, the heating unit and the heat-conducting flow channel are connected through bonding, and the heat conduction efficiency is also higher in this way of bonding. In summary, the components of the heating core of the present application do not need to be fixed by other parts, the assembly process is simple, the number of parts is small, the contact thermal resistance between the heating assembly and the heat-conducting flow channel is smaller, and the heat conduction is better. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0024] Figure 1 FIG. 1 is a structural schematic view of a heating core of the present application;
[0025] Figure 2 FIG. 2 is another perspective view of the structural schematic view of the heating core of the present application;
[0026] Figure 3 FIG. 3 is a sectional view of the structural schematic view of the heating core of the present application;
[0027] Figure 4 FIG. 4 is a local enlarged view of the structural schematic view of the heating core of the present application.
[0028] Legend: 10-heating core; 100-flow channel assembly; 110-heat-conducting flow channel; 111-clamping space; 200-heating assembly; 210-heating unit; 220-connecting mechanism; 221-electrically conductive layer; 222-insulating layer; 223-adhesive layer. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.
[0030] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.
[0031] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0032] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.
[0033] In addition, if the terms "first", "second" and the like appear, they are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.
[0034] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.
[0035] Please refer to Figure 1 The present embodiment provides a heating core 10, comprising a flow channel assembly 100 and a plurality of heating assemblies 200;
[0036] The flow channel assembly 100 comprises a plurality of heat transfer flow channels 110 arranged in layers; each heating assembly 200 is arranged between adjacent heat transfer flow channels 110;
[0037] The heating assembly 200 comprises a heating unit 210 and at least one connecting mechanism 220; along the thickness direction of the heating unit 210, the heating unit 210 is covered on the heat transfer flow channel 110 through the connecting mechanism 220;
[0038] The connecting mechanism 220 comprises a conductive layer 221 and an insulation unit, the insulation unit comprises an insulation layer 222 and two adhesive layers 223; along the thickness direction of the heating unit 210, the heating unit 210, the conductive layer 221 and the insulation layer 222 are sequentially laminated, and one adhesive layer 223 is bonded between the insulation layer 222 and the conductive layer 221, and the other adhesive layer 223 is bonded on the heat transfer runner 110 away from the conductive layer 221; the adhesive layer 223 is configured to have thermal conductivity. That is, the insulation unit is arranged between the conductive layer and the heat transfer runner by bonding.
[0039] The heating assembly 200 of the present scheme is arranged between the laminated heat transfer runners 110 to transport the heat generated by the heating assembly 200 through the heat transfer runners 110. Specifically, the surface of the heating unit 210 is covered with a conductive layer 221, the side of the conductive layer 221 away from the heating unit 210 is bonded with an insulation layer 222 through an adhesive layer 223, and the side of the insulation layer 222 away from the conductive layer 221 is bonded to the heat transfer runner 110 through another adhesive layer 223. That is, the heating assembly 200 and the heat transfer runner 110 are bonded and fixed together by the adhesive on the insulation layer 222. In this way, the conductive layer 221, the insulation layer 222, the heating unit 210 and the heat transfer runner 110 are connected by bonding, and the heat transfer efficiency of this bonding method is also higher. In summary, the components of the heating core 10 do not need to be fixed by other parts, the assembly process is simple, the number of parts is small, the contact thermal resistance between the heating assembly 200 and the heat transfer runner 110 is smaller, and the heat transfer is better.
[0040] Please continue to refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 for more structural details of the heating core 10. In an optional embodiment, the heat transfer runner 110 is a flat tube, and the adjacent flat tubes enclose a clamping space 111, and the heating assembly 200 is arranged in the clamping space 111. It is not difficult to understand that in other embodiments, the heat transfer runner 110 is also a heat transfer structure, which is only an example here and is not limited.
[0041] Further, in an optional embodiment, the insulation layer 222 is a film. The film has good insulation and good structural strength to ensure the stability of the heating core 10. Optionally, the film can be made of polyimide or the like.
[0042] In an optional embodiment, the heating unit 210 is a PTC element. The PTC element is a PTC heating body, specifically a ceramic heating element, which has the advantages of small thermal resistance and high heat exchange efficiency, and is an automatic constant temperature, power-saving electric heater.
[0043] FromFigure 3 and Figure 4 As can be seen in the optional embodiment, in the heating assembly 200, when the number of connecting mechanisms 220 is two, the two connecting mechanisms 220 are arranged on both sides of the thickness of the heating unit 210. That is, both sides of the heating unit 210 are adhered to the outer wall of the heat transfer runner 110 through the adhesive layer 223 on the insulating layer 222.
[0044] In the optional embodiment, in the heating assembly 200, the thickness of the two connecting mechanisms 220 is the same. In this way, it can be ensured that the heat of the heating unit 210 can be uniformly transmitted to the two adjacent heat transfer runners 110, thereby guaranteeing the uniformity and stability of the heat of the entire heating core 10.
[0045] In the optional embodiment, in the insulating unit, the thickness of each adhesive layer 223 is consistent along the length direction of the insulating layer 222. In this way, it can be ensured that the tightness of the internal connection of the heating assembly 200 is guaranteed, and the tightness of the connection between the heating assembly 200 and the heat transfer runner 110 is guaranteed.
[0046] In the optional embodiment, along the length direction of the heating assembly 200, the length of the connecting mechanism 220 is greater than the length of the heating unit 210. Therefore, it can be ensured that the heat of the heating unit 210 can be maximally transmitted to the heat transfer runner 110.
[0047] In the optional embodiment, the adhesive layer 223 is adhered to the conductive layer 221 or the heat transfer runner 110 through high-temperature curing. Further, after the heating assembly 200 is placed between the runners, a pre-pressure is applied, and then the PTC heating unit 210 and the runner are tightly adhered together through high-temperature curing.
[0048] Optionally, the adhesive layer 223 is an organic silicon material. Specifically, before the heating core 10 is made, the adhesive is in a semi-cured state and has a slight adhesion, and can be pre-attached to the conductive layer 221 and the heat transfer runner 110. After the pressure is applied, the organic silicon material deforms and flows, can fill the air gap of the contact interface, forms a good adhesive interface, and then realizes strong adhesion through high-temperature curing, thereby making the heating core 10.
[0049] In a second aspect, the utility model provides a kind of electric heater, and electric heater includes the heating core 10 of any one of the foregoing embodiments.
[0050] In summary, the utility model embodiment provides a kind of heating core 10 and electric heater, at least has following advantages:
[0051] The beneficial effects of the utility model embodiment include, for example:
[0052] The heating unit 210 and the heat conduction channel 110 are fixed together by the adhesive on the insulating layer 222. That is, the insulating layer 222 has double-sided adhesive property, and the conductive layer 221 and the heat conduction channel 110 are adhered together, so that the heat of the heating unit 210 can be well conducted to the heat conduction channel 110.
[0053] The heating assembly 200 does not need other parts for fixation, the assembly process is simple, the number of parts is small, the contact thermal resistance between the heating assembly 200 and the heat conduction channel 110 is smaller, and the heat conduction is better.
[0054] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A heating cartridge, characterized by, The heating core comprises: a flow channel assembly (100) and a plurality of heating assemblies (200); the flow channel assembly (100) comprises a plurality of heat transfer flow channels (110) arranged in layers; each of the heating assemblies (200) is arranged between adjacent heat transfer flow channels (110); the heating assembly (200) comprises a heating unit (210) and at least one connecting mechanism (220); along the thickness direction of the heating unit (210), the heating unit (210) is attached to the heat transfer flow channel (110) through the connecting mechanism (220); the connecting mechanism (220) comprises a conductive layer (221) and an insulation unit, the insulation unit comprises an insulation layer (222) and two adhesive layers (223); along the thickness direction of the heating unit (210), the heating unit (210), the conductive layer (221) and the insulation layer (222) are arranged in sequence, one of the adhesive layers (223) is attached between the insulation layer (222) and the conductive layer (221), and the other adhesive layer (223) is attached to the heat transfer flow channel (110) on the side of the insulation layer (222) away from the conductive layer (221); the adhesive layer (223) is configured to have thermal conductivity.
2. The heating core according to claim 1, wherein: the heat transfer flow channel (110) is a flat tube, and a clamping space (111) is formed between adjacent flat tubes, and the heating assembly (200) is arranged in the clamping space (111).
3. The heating core according to claim 1, wherein: the insulation layer (222) is a film.
4. The heating core according to claim 1, wherein: the heating unit (210) is a PTC element.
5. The heating core according to claim 1, wherein: in the heating assembly (200), when the number of the connecting mechanisms (220) is two, the two connecting mechanisms (220) are arranged on both sides of the thickness of the heating unit (210).
6. The heating core according to claim 5, wherein: in the heating assembly (200), the thicknesses of the two connecting mechanisms (220) are the same.
7. The heating core according to claim 1, wherein: in the insulation unit, along the length direction of the insulation layer (222), the thickness of each adhesive layer (223) remains the same.
8. The heating core according to claim 1, wherein: along the length direction of the heating assembly (200), the length of the connecting mechanism (220) is greater than the length of the heating unit (210).
9. The heating core according to claim 1, wherein: the adhesive layer (223) is attached to the conductive layer (221) or the heat transfer flow channel (110) through high-temperature curing.
10. An electric heater, comprising the heating core according to any one of claims 1-9.