Heating core structure of PTC heater

Abstract

The utility model discloses a PTC heater heating core structure, and specifically relates to the heater heating technology field, the PTC heater heating core structure comprises a heating housing, one side of the outer end face of the heating housing is provided with an installation support flange, the heating housing is internally provided with a heating core installation groove, the heating core installation groove is internally provided with a PI film, and the PI film is internally provided with an insulation heat conduction protection shell. When the PTC heater heating core structure is actually used, the PTC ceramic chip, the concave mounting groove and the connecting electrode plate are correspondingly arranged, so that the convenience of mounting the PTC heater heating core structure can be effectively improved, and meanwhile, the insulating heat-conducting protective shell and the heating core limiting mounting block are correspondingly arranged, so that the stability of mounting the heating core can be effectively improved, and the service life of the heating core structure is prolonged. And meanwhile, the PI film can effectively increase the insulativity of the heating core, so that the influence on the use safety of the heating shell is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of heater heating, and more specifically, to a heating core structure of a PTC heater. Background Art

[0002] PTC heating element, also known as PTC heater, is composed of PTC ceramic heating element and aluminum tube. This type of PTC heating element has the advantages of low thermal resistance and high heat exchange efficiency. It is an automatic constant temperature and energy-saving electric heater. The outstanding feature is its safety performance. Under any application conditions, it will not produce the surface "reddening" phenomenon like electric heating tube heaters. Publication No. (CN219919197U) describes a PTC heater that is easy to replace the heating core. By providing a connecting assembly, the connecting assembly is movable with the movable joint. During use, the spring and telescopic rod in the connecting assembly are used to increase the distance between the fixed joint and the movable joint by pulling the spring. In the natural state of the spring, the heating core is completely embedded in the fixed joint and the movable joint. In combination with screws and small holes, the fixed rod and the connecting rod can be fixed by screws, ensuring that the entire movable joint remains fixed and is not affected by external forces. Therefore, when disassembling, you only need to remove the screws first and then directly pull the movable joint to remove the heating core. It is efficient and quick, and the heating core will not be affected.

[0003] However, the above device is simple and convenient to install when in use, and it is also easy to replace and repair the heating core. However, its structure is relatively complex, and it is prone to more failures when used for a long time. At the same time, it is also more difficult to disassemble, which has a certain impact on the convenience of repairing and replacing the heating core. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a PTC heater core structure. The technical problem to be solved by the present invention is: how to increase the convenience and stability of heating installation and disassembly.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a PTC heater core structure, comprising a heating shell, a mounting support flange provided on one side of an outer end surface of the heating shell, a heating core mounting groove provided inside the heating shell, a PI film provided inside the heating core mounting groove, an insulating heat-conducting protective shell provided inside the PI film, and a PTC ceramic chip provided on the inner end surface of the insulating heat-conducting protective shell;

[0006] A support limit block is provided on one side of the outer end surface of the PTC ceramic chip, a concave mounting groove is provided on the inner end surface of the support limit block, a connecting electrode sheet is provided inside the concave mounting groove, a connecting wire is provided on one end surface of the connecting electrode sheet, and a heating core limit mounting block is provided on one side of the upper end of the insulating heat-conductive protective shell.

[0007] In a preferred embodiment, a mounting groove is provided on the end surface of the mounting support flange, and a heating wire is provided on the outer end surface of the PTC ceramic chip;

[0008] There are two mounting support flanges, which are arranged in a mirror image on both sides of the transverse central axis in the top view direction of the heating housing. The heating housing is an aluminum component.

[0009] In a preferred embodiment, the number of the mounting grooves is multiple, and they are arranged in an array on both sides of the vertical central axis of the mounting support flange in a top view direction;

[0010] The heating wire is arranged in a spirally wound state on the outer end surface of the PTC ceramic chip, and both ends of the heating wire are connected to the concave mounting grooves at corresponding positions.

[0011] In a preferred embodiment, the PI film is made of a polyimide insulating material component, and the insulating heat-conducting protective shell is made of a heat-conducting ceramic material component;

[0012] There are multiple supporting limit blocks and concave mounting grooves, and they are arranged in a mirror image state on both sides of the transverse central axis in the top view direction of the PTC ceramic chip.

[0013] In a preferred embodiment, the number of the connecting electrode sheets and the number of the connecting wires are both provided in pairs, and they are arranged in a mirror image state on both sides of the transverse central axis in the top view direction of the PTC ceramic chip;

[0014] The connecting electrode sheet is connected to the connecting wire, the outer end surface of the insulating heat-conductive protective shell is adapted to the inner end surface of the PI film, and the outer end surface of the PI film is adapted to the inner end surface of the heating core installation groove.

[0015] In a preferred embodiment, the number of the heating core limiting mounting blocks is two, and they are located on both sides of the transverse central axis of the insulating heat-conductive protective shell in the top view direction;

[0016] The inner end surface of the heating core limiting mounting block is matched with the outer end surface of the PTC ceramic chip, and the outer end surface of the connecting electrode sheet is matched with the inner end surface of the concave mounting groove.

[0017] The technical effects and advantages of this utility model are:

[0018] When the utility model is actually used, the corresponding setting of the PTC ceramic chip, the concave mounting groove and the connecting electrode sheet can effectively increase the convenience of installation and disassembly of the PTC heater core structure. At the same time, the corresponding setting of the insulating heat-conductive protective shell and the heating core limiting mounting block can effectively increase the stability of the heating core installation. At the same time, the PI film can effectively increase the insulation of the heating core, avoiding affecting the safety of the use of the heating shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the overall bottom structure of the utility model.

[0021] Figure 3 It is a schematic diagram of the overall cross-section connection structure of the utility model.

[0022] Figure 4 This is a schematic diagram of the expanded structure of the insulating and heat-conducting protective shell of the utility model.

[0023] Figure 5 This is a schematic diagram of the enlarged structure of the PTC ceramic chip of the utility model.

[0024] The figures are marked as: 1 heating shell, 2 mounting support flange, 3 mounting groove, 4 heating core mounting groove, 5 PI film, 6 insulating thermal conductive protective shell, 7 PTC ceramic chip, 8 heating core limit mounting block, 9 support limit block, 10 concave mounting groove, 11 connecting electrode sheet, 12 heating wire, 13 connecting wire. DETAILED DESCRIPTION

[0025] The utility model provides a PTC heater core structure, such as Figure 1 and 2 As shown, it includes a heating shell 1, one side of which is provided with a mounting support flange 2 on its outer end face, a heating core mounting groove 4 is provided inside the heating shell 1, and a mounting groove 3 is provided on the end face of the mounting support flange 2. There are two mounting support flanges 2, and they are arranged in a mirror state on both sides of the horizontal center axis of the heating shell 1 in the top view direction. The heating shell 1 is an aluminum component, and there are multiple mounting grooves 3, and they are arranged in an array state on both sides of the vertical center axis of the mounting support flange 2 in the top view direction.

[0026] like Figure 3 and 4As shown, a PI film 5 is provided inside the heating core mounting groove 4, and an insulating heat-conducting protective shell 6 is provided inside the PI film 5. The inner end face of the insulating heat-conducting protective shell 6 is provided with a PTC ceramic chip 7. A heating core limiting mounting block 8 is provided on one side of the upper end of the insulating heat-conducting protective shell 6. The PI film 5 is a polyimide insulating material component, and the insulating heat-conducting protective shell 6 is made of a heat-conducting ceramic material component. The outer end face of the insulating heat-conducting protective shell 6 is adapted to the inner end face of the PI film 5, and the outer end face of the PI film 5 is adapted to the inner end face of the heating core mounting groove 4. There are two heating core limiting mounting blocks 8, and the inner end faces of the heating core limiting mounting blocks 8 are adapted to the outer end faces of the PTC ceramic chip 7 on both sides of the transverse central axis of the insulating heat-conducting protective shell 6 in the top view direction.

[0027] like Figure 5 As shown, a support limit block 9 is provided on one side of the outer end surface of the PTC ceramic chip 7, and a concave mounting groove 10 is provided on the inner end surface of the support limit block 9. A connecting electrode sheet 11 is provided inside the concave mounting groove 10, and a connecting wire 13 is provided on one end surface of the connecting electrode sheet 11. A heating wire 12 is provided on the outer end surface of the PTC ceramic chip 7. The heating wire 12 is arranged in a spirally wound state on the outer end surface of the PTC ceramic chip 7, and both ends of the heating wire 12 are connected to the concave mounting groove 10 at the corresponding position. There are multiple support limit blocks 9 and concave mounting grooves 10, and they are arranged in a mirror-image state on both sides of the transverse central axis of the PTC ceramic chip 7 in the top view direction. The connecting electrode sheet 11 and the connecting wire 13 are connected. There are two connecting electrode sheets 11 and two connecting wires 13, and they are arranged in a mirror-image state on both sides of the transverse central axis of the PTC ceramic chip 7 in the top view direction. The outer end surface of the connecting electrode sheet 11 is adapted to the inner end surface of the concave mounting groove 10.

[0028] Working principle of this utility model:

[0029] When using the present invention, the staff will wrap the heating wire 12 around the outer end of the PTC ceramic chip 7, and wrap the two ends of the heating wire 12 around one end of the connecting electrode sheet 11 respectively. Then the staff can insert the connecting electrode sheet 11 and the heating wire 12 into the inside of the concave mounting groove 10. Then the staff can install the PTC ceramic chip 7 inside the insulating thermally conductive protective shell 6. Then the staff can wrap the PTC ceramic chip 7 through the insulating thermally conductive protective shell 6. Then the staff can put the PI film 5 on the outer end face of the insulating thermally conductive protective shell 6. Then the staff will insert the PI film 5, the insulating thermally conductive protective shell 6 and the PTC ceramic chip 7 into the heating core mounting groove 4 for use.

[0030] Finally, a few points should be explained: the drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A PTC heater core structure, characterized in that: include: A heating shell (1) is provided with a mounting support flange (2) on one side of its outer end surface, a heating core mounting groove (4) is provided inside the heating shell (1), a PI film (5) is provided inside the heating core mounting groove (4), an insulating heat-conducting protective shell (6) is provided inside the PI film (5), and a PTC ceramic chip (7) is provided on the inner end surface of the insulating heat-conducting protective shell (6); A support and limit block (9) is provided on one side of the outer end surface of the PTC ceramic chip (7), a concave mounting groove (10) is provided on the inner end surface of the support and limit block (9), a connecting electrode sheet (11) is provided inside the concave mounting groove (10), a connecting wire (13) is provided on one side of the end surface of the connecting electrode sheet (11), and a heating core limit mounting block (8) is provided on one side of the upper end of the insulating heat-conducting protective shell (6).

2. A PTC heater core structure according to claim 1, characterized in that: The end surface of the mounting support flange (2) is provided with a mounting groove (3), and the outer end surface of the PTC ceramic chip (7) is provided with a heating wire (12); The number of the mounting support flanges (2) is two, and they are arranged in a mirror image state on both sides of the transverse central axis of the heating housing (1) in the top view direction. The heating housing (1) is an aluminum component.

3. A PTC heater core structure according to claim 2, characterized in that: The number of the mounting grooves (3) is plural, and they are arranged in an array state on both sides of the vertical central axis of the mounting support flange (2) in a top-view direction; The heating wire (12) is arranged on the outer end surface of the PTC ceramic chip (7) in a spirally wound state, and both ends of the heating wire (12) are connected to the concave mounting grooves (10) at corresponding positions.

4. The PTC heater core structure according to claim 1, characterized in that: The PI film (5) is a component made of a polyimide insulating material, and the insulating heat-conducting protective shell (6) is made of a component made of a heat-conducting ceramic material; The supporting limit blocks (9) and the concave mounting grooves (10) are provided in plural numbers and are arranged in a mirror image state on both sides of the transverse central axis of the PTC ceramic chip (7) in the top-view direction.

5. The PTC heater core structure according to claim 1, characterized in that: The number of the connecting electrode sheets (11) and the connecting wires (13) is two, and they are arranged in a mirror image state on both sides of the transverse central axis of the PTC ceramic chip (7) in the top view direction; The connecting electrode sheet (11) is connected to the connecting wire (13), the outer end surface of the insulating heat-conductive protective shell (6) is matched with the inner end surface of the PI film (5), and the outer end surface of the PI film (5) is matched with the inner end surface of the heating core installation groove (4).

6. The PTC heater core structure according to claim 1, characterized in that: The number of the heating core limiting mounting blocks (8) is two, and they are located on both sides of the transverse central axis of the insulating heat-conducting protective shell (6) in the top view direction; The inner end surface of the heating core limiting mounting block (8) is matched with the outer end surface of the PTC ceramic chip (7), and the outer end surface of the connecting electrode sheet (11) is matched with the inner end surface of the concave mounting groove (10).

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