PTC sheet heating element and heater

Abstract

The invention discloses a PTC sheet heating body, and relates to the technical field of heaters, the PTC sheet heating body comprises a PTC sheet, a first electrode, a mounting seat and a second electrode, the PTC sheet is located in the mounting seat, the first electrode and the second electrode are both located on the same surface of the PTC sheet and are in contact with the PTC sheet, and the PTC sheet is located in the mounting seat. The first electrode and the second electrode are used for being electrically connected with the positive electrode and the negative electrode of a power source respectively. The invention further provides a heater which comprises the PTC sheet heating body. The first electrode and the second electrode are arranged on the same side of the PTC piece, heat generated by the PTC piece can be directly transmitted without being transmitted through the electrodes, and the heat conduction efficiency can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heaters, and in particular to a PTC sheet heating element and a heater. Background Art

[0002] At present, the heating elements of traditional heaters (such as electric mosquito coil heaters, etc.) are mostly assembled by stainless steel surface sheets (or plastic, ceramics, etc.), ceramic sheets, circular PTC sheets and upper and lower pole sheets; among them, the circular PTC sheet generally adopts two upper and lower electrodes, that is, the two pole sheets are respectively arranged on the upper and lower sides of the circular PTC sheet. The production process is to first install the two pole sheets and the PTC sheet on the ceramic sheet, and then place them on the back of the stainless steel surface sheet (insulating paper has been placed in the stainless steel surface sheet), and then place them on special equipment to clamp the stainless steel surface sheet to the ceramic sheet.

[0003] The heat conduction process of the above heating element is that the heat of the circular PTC sheet is first conducted to the electrode, then from the electrode to the insulating paper, and then from the insulating paper to the stainless steel surface sheet to reach the required temperature of the heating element. The heat conduction efficiency is low.

[0004] Therefore, a PTC sheet heating element and a heater are provided to solve the above problems existing in the prior art. Summary of the Invention

[0005] The purpose of the present invention is to provide a PTC sheet heating element and a heater to solve the problems existing in the above-mentioned prior art and to effectively improve the heat conduction efficiency.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a PTC sheet heating element, comprising a PTC sheet, a first electrode, a mounting base and a second electrode. The PTC sheet is located in the mounting base, the first electrode and the second electrode are both located on the same surface of the PTC sheet and in contact with the PTC sheet, and the first electrode and the second electrode are respectively used to electrically connect to the positive and negative poles of a power supply.

[0008] Preferably, it further comprises a surface sheet, which is attached to a side of the PTC sheet facing away from the first electrode and the second electrode.

[0009] Preferably, an insulating layer is further included, and the insulating layer is arranged between the surface sheet and the PTC sheet.

[0010] Preferably, the first electrode and the second electrode are both elastic electrodes, and the first electrode and the second electrode are both electrically connected to a pin, and the two pins are led out of the mounting seat and electrically connected to the power supply through wires.

[0011] Preferably, the outer edge of the surface piece is provided with a bending leg, and the bending leg can be bent to clamp the mounting seat; wherein, there are multiple bending legs, and the multiple bending legs are arranged around the surface piece.

[0012] Preferably, a fixing mechanism is provided on the mounting seat, and the surface piece is installed in the mounting seat and fixed by the fixing mechanism.

[0013] Preferably, the fixing mechanism is a hook or a buckle.

[0014] Preferably, the mounting seat includes a mounting base and a mounting top cover, the mounting top cover is buckled on the mounting base, and a mounting cavity is formed between the mounting base and the mounting top cover, the first electrode, the second electrode and the PTC sheet are all arranged in the mounting cavity, and the PTC sheet is arranged close to the mounting top cover.

[0015] Preferably, it also includes a surface sheet, which is made of metal and is arranged to fit the installation top cover.

[0016] The present invention also provides a heater comprising the PTC sheet heating element as described above.

[0017] Compared with the prior art, the present invention has achieved the following technical effects:

[0018] The PTC sheet heating element of the present invention includes a PTC sheet, a first electrode, a mounting base, and a second electrode. The PTC sheet is located within the mounting base. The first and second electrodes are located on the same side of the PTC sheet and in contact with the sheet. The first and second electrodes are respectively configured to electrically connect to the positive and negative electrodes of a power supply. In the present invention, the first and second electrodes are located on the same side of the PTC sheet, allowing heat generated by the PTC sheet to be transferred directly without passing through the electrodes, effectively improving heat conduction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic structural diagram of a PTC heating element in Example 1 of the present invention;

[0021] Figure 2 This is a bottom schematic diagram of the PTC sheet heating element in Example 1 of the present invention;

[0022] Figure 3 This is an exploded view of the PTC heating element in Example 1 of the present invention;

[0023] Figure 4 Schematic diagram of the structure of the heater in embodiment 1 of the present invention;

[0024] Figure 5 This is a schematic diagram of the installation of the PTC heating element in Example 1 of the present invention;

[0025] Figure 6 This is a schematic structural diagram of a PTC heating element in the second embodiment of the present invention;

[0026] Figure 7 This is a bottom schematic diagram of the PTC sheet heating element in the second embodiment of the present invention;

[0027] Figure 8 This is an exploded view of the PTC heating element in Example 2 of the present invention;

[0028] Figure 9 Schematic diagram of the structure of the heater in the second embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram of the installation of the PTC heating element in the second embodiment of the present invention;

[0030] Figure 11 This is a schematic structural diagram of a PTC heating element in Example 3 of the present invention;

[0031] Figure 12 This is a bottom schematic diagram of the PTC sheet heating element in Example 3 of the present invention;

[0032] Figure 13 This is an exploded view of the PTC heating element in Example 3 of the present invention;

[0033] Figure 14 Schematic diagram of the structure of the heater in the third embodiment of the present invention;

[0034] Figure 15 This is a schematic diagram of the installation of the PTC heating element in Example 3 of the present invention.

[0035] In the figure: 100-PTC sheet heating element, 1-surface sheet, 11-bending leg, 2-insulating paper, 3-PTC sheet, 4-first electrode, 5-mounting seat, 501-mounting base, 502-mounting top cover, 6-second electrode, 200-heater, 201-plug, 202-base, 203-indicator light, 204-surface cover. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] The purpose of the present invention is to provide a PTC sheet heating element and a heater to solve the problems existing in the above-mentioned prior art and to effectively improve the heat conduction efficiency.

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Example 1

[0040] like Figure 1-Figure 5 As shown, in this embodiment, a PTC sheet heating element 100 is provided, which mainly includes a PTC sheet 3, a first electrode 4, a mounting seat 5 and a second electrode 6. The PTC sheet 3 is located in the mounting seat 5, and the first electrode 4 and the second electrode 6 are both located on the same surface of the PTC sheet 3 and in contact with the PTC sheet 3. The first electrode 4 and the second electrode 6 are respectively used to electrically connect to the positive and negative poles of the power supply.

[0041] In this embodiment, the first electrode 4 and the second electrode 6 are disposed on the same surface of the PTC sheet 3 . The heat generated by the PTC sheet 3 can be directly transferred without passing through the electrodes, thereby effectively improving the heat conduction efficiency.

[0042] In this embodiment, the mounting base 5 can be made of plastic or ceramic.

[0043] In this embodiment, a surface sheet 1 is further included, which is attached to the side of the PTC sheet 3 facing away from the first electrode 4 and the second electrode 6. The surface sheet 1 can be made of stainless steel, plastic, ceramic or aluminum, preferably stainless steel.

[0044] Furthermore, an insulating layer is included, which is arranged between the surface sheet 1 and the PTC sheet 3. The heat of the PTC sheet 3 is conducted to the insulating layer and then to the surface sheet 1. The heat conduction efficiency of the heating element is improved and the manufacturing process is relatively simple. It should be noted that the insulating layer is preferably insulating paper 2, and the insulating layer can be cancelled as needed. For example, the insulating layer can be cancelled for low-voltage products.

[0045] In this embodiment, the first electrode 4 and the second electrode 6 are both elastic electrodes, which can make the PTC sheet 3 tightly attached to the electrode and the surface sheet 1; wherein, the first electrode 4 and the second electrode 6 are both electrically connected to a pin, and the two pins are led out of the mounting seat 5, and the wires are connected by riveting, wrapping, electric welding, etc. to supply power to the heating element.

[0046] In this embodiment, the outer edge of the surface sheet 1 is provided with a bending leg 11, which can be bent to clamp the mounting base 5. A plurality of bending legs 11 are provided, and the plurality of bending legs 11 are arranged around the surface sheet 1 to improve the fixing effect. In this embodiment, the mounting base 5 is clamped by the bending legs 11, and the elasticity of the first electrode 4 and the second electrode 6 is utilized to make the PTC sheet 3 tightly adhere to the electrodes and the surface sheet 1, thereby assembling a heating element product. This heating element product does not require special equipment for production, and only requires assembly. It can also be assembled using automated equipment, resulting in relatively high production efficiency.

[0047] The working principle of the PTC heating element 100 in this embodiment is as follows:

[0048] This embodiment uses a PTC sheet 3 as the heat source, and the assembled finished heating element has an elastic electrode that holds the PTC sheet 3 in close contact with the insulating paper 2 (the insulating paper 2 can be removed as needed), which is also in close contact with the surface sheet 1. When the PTC sheet heating element 100 is energized, the heat generated by the PTC sheet 3 is transferred to the surface sheet 1 through the insulating paper 2, causing the surface sheet 1 to reach the desired temperature. Because the internal components of the PTC sheet heating element 100 are all in close contact, when the temperature of the PTC sheet 3 is constant, the surface temperature of the PTC sheet heating element 100 is also constant, and the temperature consistency of the PTC sheet heating element 100 can be guaranteed.

[0049] This embodiment also discloses a heater 200, including the PTC sheet heating element 100 as described above, wherein the heater 200 can be an electric mosquito coil heater, an electric heater perfume heater, or other heaters; this embodiment is described by taking the electric mosquito coil heater as an example. Figure 4-Figure 5 As shown, it includes a main shell, a plug 201 and an indicator light 203. The main shell includes a base 202 and a cover 204. The PTC sheet heating element 100 is fixed on the base 202. The cover 204 is snapped onto the base 202. The plug 201 is used to connect a power source to power the PTC sheet heating element 100. The indicator light 203 is used to indicate the power switch.

[0050] Example 2

[0051] This embodiment is an improvement based on the first embodiment, and its main differences from the first embodiment are: Figures 6-10 As shown, in this embodiment, a fixing mechanism is provided on the mounting seat 5, and the face piece 1 is installed in the mounting seat 5 and fixed by the fixing mechanism; wherein, the fixing mechanism can be selected according to specific work needs, for example, it can be a hook or a buckle, etc., preferably a hook.

[0052] In this embodiment, the PTC sheet heater 100 uses the mounting base 5 as a carrier. First, the first electrode 4, the second electrode 6, the PTC sheet 3 and the insulating paper 2 (the insulating paper 2 can be removed as needed, such as for low-voltage products) are installed into the mounting base 5, and then the surface sheet 1 (preferably made of metal aluminum) is installed on the mounting base 5. The hook on the mounting base 5 will hook the surface sheet 1, thereby assembling a heater product.

[0053] The working principle of the PTC heating element 100 in this embodiment is as follows:

[0054] In this embodiment, the elastic electrodes hold the PTC sheet 3 in close contact with the insulating paper 2 (which can be omitted as needed), which in turn holds the surface sheet 1 in close contact. When power is applied to the PTC sheet heater 100, the heat generated by the PTC sheet 3 is transferred to the surface sheet 1 through the insulating paper 2, causing the surface sheet 1 to reach the desired temperature. Because the internal components of the PTC sheet heater 100 are all in close contact, when the temperature of the PTC sheet 3 remains constant, the surface temperature of the PTC sheet heater 100 also remains constant, ensuring consistent temperature throughout the PTC sheet heater 100.

[0055] Example 3

[0056] This embodiment is an improvement based on the first or second embodiment. The main differences between this embodiment and the first or second embodiment are: Figure 11-Figure 15 As shown, in this embodiment, the mounting seat 5 includes a mounting base 501 and a mounting top cover 502, and the mounting top cover 502 is buckled on the mounting base 501. A mounting cavity is formed between the mounting base 501 and the mounting top cover 502. The first electrode 4, the second electrode 6 and the PTC sheet 3 are all arranged in the mounting cavity. The mounting base 501 and the mounting top cover 502 are hooked with each other by hooks or buckles. At this time, the component forms a whole. In some products with lower temperature requirements, the component can be used as a heating element, and the surface of the mounting base 501 is used as the heating surface.

[0057] When the temperature requirement is higher, a surface piece 1 is also provided. The surface piece 1 is preferably made of metal and is arranged in contact with the mounting top cover 502. The outer edge of the surface piece 1 is provided with a bending foot 11. The bending foot 11 can be bent to clamp the mounting seat 5. There are multiple bending feet 11, and multiple bending feet 11 are arranged around the surface piece 1 to improve the fixing effect.

[0058] In this embodiment, the elastic electrode holds the PTC sheet 3 in close contact with the mounting base 5, which in turn is in close contact with the surface sheet 1. When power is applied to the heating element, the heat generated by the PTC sheet 3 is transferred to the surface sheet 1 through the mounting base 5, causing the surface sheet 1 to reach the desired temperature. Because the internal components of the PTC sheet heating element 100 are all in close contact, when the temperature of the PTC sheet 3 is constant, the surface temperature of the PTC sheet heating element 100 is also constant, ensuring temperature consistency throughout the PTC sheet heating element 100.

[0059] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A PTC sheet heating element, characterized in that: The invention comprises a PTC sheet, a first electrode, a mounting base and a second electrode. The PTC sheet is located in the mounting base. The first electrode and the second electrode are both located on the same surface of the PTC sheet and in contact with the PTC sheet. The first electrode and the second electrode are respectively used to electrically connect to the positive and negative electrodes of a power supply.

2. The PTC sheet heating element according to claim 1, characterized in that: It also includes a surface sheet, which is attached to a side of the PTC sheet facing away from the first electrode and the second electrode.

3. The PTC sheet heating element according to claim 2, characterized in that: It also includes an insulating layer, which is arranged between the surface sheet and the PTC sheet.

4. The PTC sheet heating element according to claim 2 or 3, characterized in that: The first electrode and the second electrode are both elastic electrodes, and are both electrically connected to a pin. The two pins are led out of the mounting seat and are electrically connected to the power supply through a wire.

5. The PTC sheet heating element according to claim 4, characterized in that: The outer edge of the surface piece is provided with a bending leg, and the bending leg can be bent to clamp the mounting seat; wherein, the bending leg is provided in plurality, and the plurality of bending legs are arranged around the surface piece.

6. The PTC sheet heating element according to claim 4, characterized in that: The mounting seat is provided with a fixing mechanism, and the face piece is installed in the mounting seat and fixed by the fixing mechanism.

7. The PTC sheet heating element according to claim 6, characterized in that: The fixing mechanism is a hook or a buckle.

8. The PTC sheet heating element according to claim 1, characterized in that: The mounting seat includes a mounting base and a mounting top cover, the mounting top cover is buckled on the mounting base, and a mounting cavity is formed between the mounting base and the mounting top cover. The first electrode, the second electrode and the PTC sheet are all arranged in the mounting cavity, and the PTC sheet is arranged close to the mounting top cover.

9. The PTC sheet heating element according to claim 8, characterized in that: It also includes a surface piece, which is made of metal and is arranged in contact with the installation top cover.

10. A heater, characterized in that: The invention comprises a PTC sheet heating element as described in any one of claims 1 to 9.

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