Corner-cut sleeve shell PTC (Positive Temperature Coefficient) heating device

Abstract

The utility model discloses a corner cut sleeve shell PTC heating device, which belongs to the technical field of heating element fixation, and comprises a positive electrode plate, a negative electrode plate, a PTC thermistor plate, a heat transfer base and a corner cut sleeve shell, the PTC thermistor plate is used as a heating element, is embedded into the corner cut sleeve shell and is sleeved on the heat transfer base, and seamless tight fixation is realized. And the inner wall of the chamfered sleeve shell is matched with the outer wall of the PTC thermistor piece, so that electric contact is ensured. The device further comprises insulation paste to achieve insulation. The outer edge of the lower end of the corner cut sleeve shell is provided with a corner cut, so that heat transfer bases in different shapes can be conveniently sleeved and adapted. According to the device, the PTC thermistor element is pressed on two sides, the thickness is reduced, the heat efficiency is improved, and the heat resistance is reduced.

Description

Technical Field

[0001] This utility model relates to the field of heating element fixing technology, and in particular to a PTC heating device with a chamfered shell. Background Technology

[0002] PTC heaters are widely used in many industries due to their safety, reliability, and energy efficiency. Traditional PTC heaters typically consist of a PTC thermistor, conductor electrodes, sealant, powder, and various shaped fixing devices. While these components meet some usage requirements, they also have some significant shortcomings. The traditional method of using a single-sided fixing block to secure the PTC thermistor results in low heat transfer efficiency and high thermal resistance. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a corner-cutting shell PTC heating device. While providing excellent electrical insulation for the PTC thermistor element, it can press the PTC thermistor element on both sides. At the same time, compared with the single-sided fixing of the fixing block, the thickness is reduced to improve heat transfer efficiency and reduce thermal resistance, so that the heat generated by the PTC thermistor sheet can be efficiently transferred to the external environment.

[0004] To achieve the above objectives, this utility model provides a chamfered PTC heating device, comprising:

[0005] Positive and negative electrode plates are used for power supply;

[0006] The PTC thermistor is equipped with the positive and negative electrode plates at its upper end and is powered through the positive and negative electrode plates. The PTC thermistor is configured as a heating element to generate heat after being powered on.

[0007] The heat transfer base is used to transfer the heat generated by the PTC thermistor and provides a stable support foundation for the entire device.

[0008] The corner-cutting shell is inverted U-shaped and is configured to embed the PTC thermistor sheet inside and then be fitted and pressed into the heat transfer base. This allows the PTC thermistor sheet to be pressed tightly by the corner-cutting shell on both sides, and to form a seamless and tight fixation between the positive and negative electrode sheets, the corner-cutting shell, and the heat transfer base, thereby reducing thermal resistance and improving thermal efficiency.

[0009] Furthermore, the inner wall of the chamfered sleeve matches the outer wall of the PTC thermistor sheet, so that the PTC thermistor sheet and the positive and negative electrode sheets are tightly attached during the pressing process, forming sufficient electrical contact.

[0010] Furthermore, the chamfered PTC heating device also includes an insulating adhesive, which is coated on the positive and negative electrode plates to achieve insulation.

[0011] Furthermore, the upper end of the chamfered sleeve is provided with a through hole for the positive and negative electrode plates to pass through.

[0012] Furthermore, the lower outer edge of the chamfered sleeve is chamfered to make it easier to fit and press into the heat transfer base, and to adapt to heat transfer bases of different shapes.

[0013] Furthermore, an insulating adhesive is applied between the chamfered sleeve and the heat transfer base.

[0014] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0015] (1) This utility model uses the corner-cutting shell to press the PTC thermistor sheet and the positive and negative electrode sheets to form sufficient electrical contact. Compared with the pressing of the heat-conducting base and electrode sheets, the corner-cutting shell has a reduced thickness, thereby reducing thermal resistance. At the same time, the double-sided pressing allows the heat generated by the PTC thermistor sheet to be transferred to the external environment from two directions, so as to achieve higher thermal efficiency.

[0016] (2) This utility model achieves insulation between the heating device of the PTC heater and the heat transfer base by using insulating adhesive. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the chamfered shell PTC heating device provided in this embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram showing the positions of the positive and negative electrodes of the chamfered housing PTC heating device provided in this embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the beveled housing of the PTC heating device with beveled housing provided in this embodiment of the utility model;

[0020] Labeling Explanation: 1. Positive and negative electrode plates; 2. Insulating adhesive; 3. Heat transfer base; 4. PTC thermistor plate; 5. Chamfered casing. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0022] In the description of this utility model, it should be understood that the terms "upper," "lower," "horizontal," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figures 1-3 As shown, this embodiment provides a chamfered PTC heating device, including:

[0025] Positive and negative electrode plates 1 are used for power supply;

[0026] The PTC thermistor 4 is disposed between the positive and negative electrode plates and is powered by the positive and negative electrode plates 1. The PTC thermistor 4 is configured as a heating element to generate heat after being powered on.

[0027] The heat transfer base 3 is used to transfer the heat generated by the PTC thermistor 4 and provides a stable support foundation for the entire device.

[0028] The chamfered housing 5, which is inverted U-shaped, is configured to embed the PTC thermistor 4 on its inner side and then fit and press it into the heat transfer base 3. This ensures that the PTC thermistor 4 is pressed tightly against both sides by the chamfered housing, creating a seamless and secure connection between the positive and negative electrode plates 1, the chamfered housing 5, and the heat transfer base 3. This reduces thermal resistance and improves thermal efficiency, allowing the heat generated by the PTC thermistor 4 to be efficiently transferred to the heat transfer base 3.

[0029] Furthermore, the inner wall of the chamfered sleeve 5 matches the outer wall of the PTC thermistor sheet 4 so that the PTC thermistor sheet 4 fits tightly with the positive and negative electrode sheets 1 during the press-fitting process, forming sufficient electrical contact.

[0030] Specifically, the chamfered PTC heating device also includes:

[0031] Insulating adhesive 2 is applied to the positive and negative electrode plates 1 to achieve insulation.

[0032] Specifically, the upper end of the chamfered sleeve 5 is provided with a through hole for the positive and negative electrode plates 1 to pass through.

[0033] Specifically, the lower outer edge of the chamfered sleeve 5 is chamfered so that the chamfered sleeve 5 can be more easily fitted into the heat transfer base 3 and pressed tightly, and can adapt to heat transfer bases 3 of different shapes.

[0034] Furthermore, insulating adhesive 2 is applied between the chamfered sleeve 5 and the heat transfer base 3.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A PTC heating device with a chamfered housing, characterized in that, include: Positive and negative electrode plates are used for power supply; A PTC thermistor is disposed between the positive and negative electrode plates and powered through the positive and negative electrode plates. The PTC thermistor is configured as a heating element to generate heat after being powered on. The heat transfer base is used to transfer the heat generated by the PTC thermistor and provides a stable support foundation for the entire device. The corner-cutting shell is inverted U-shaped and is configured to embed the PTC thermistor sheet inside and then be fitted and pressed into the heat transfer base. This allows the PTC thermistor sheet to be pressed tightly by the corner-cutting shell on both sides, and to form a seamless and tight fixation between the positive and negative electrode sheets, the corner-cutting shell, and the heat transfer base, thereby reducing thermal resistance and improving thermal efficiency.

2. The PTC heating device with chamfered casing according to claim 1, characterized in that, The inner wall of the chamfered sleeve matches the outer wall of the PTC thermistor sheet, so that the PTC thermistor sheet and the positive and negative electrode sheets are tightly attached during the pressing process, forming sufficient electrical contact.

3. The PTC heating device with chamfered casing according to claim 1, characterized in that, Also includes: An insulating adhesive is applied to the positive and negative electrode plates to achieve insulation.

4. The PTC heating device with chamfered casing according to claim 1, characterized in that, The upper end of the chamfered sleeve has a through hole for the positive and negative electrode plates to pass through.

5. The chamfered sleeve PTC heating device according to claim 3, characterized in that, The lower outer edge of the chamfered sleeve is chamfered to make it easier to fit and press into the heat transfer base, and to adapt to heat transfer bases of different shapes.

6. The chamfered-corner PTC heating device according to claim 5, characterized in that, An insulating adhesive is applied between the chamfered sleeve and the heat transfer base.

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