PTC element thermal expansion self-adapting compression type PTC heater

Abstract

The utility model relates to PTC heater technical field especially a kind of PTC element thermal expansion self-adapting compression type PTC heater, including PTC heater, PTC heater is by first side seat, second side seat, thermal expansion fin element composition, first side seat and second side seat are all equipped with screw groove and mounting hole, the outside of PTC heater is equipped with first cover and second cover, first cover and second cover are all equipped with first seal and second seal, first cover and second cover are all equipped with horizontal heat conduction block, horizontal heat conduction block is provided with vertical heat conduction block, first cover and second cover are all set with horizontal dispersion groove and vertical dispersion groove, first cover and second cover are all equipped with screw pin. The risk of short-circuit leakage of thermal expansion fin element itself on PTC element thermal expansion self-adapting compression type PTC heater is improved, and the corrosion resistance and degradation resistance of the thermal expansion fin element are improved, the sealing waterproof degree is ensured, and the heating effect of the PTC heater is ensured.

Description

Technical Field

[0001] This utility model relates to the field of PTC heater technology, and in particular to a PTC heater with adaptive thermal expansion and compression of PTC elements. Background Technology

[0002] A thermal expansion adaptive compression type PTC heater generally consists of two side seats, a PTC element, electrodes (aluminum tube / aluminum plate), thermal expansion fin elements, power supply wiring, etc.

[0003] Its specific working principle is as follows: at room temperature, the thermal expansion fin element is at its original length, applying an initial pre-pressure to the PTC element. This pressure ensures good contact between the PTC element and the electrode, resulting in low resistance and allowing the heater to start efficiently and heat up quickly. When powered on, the PTC element heats up, and the temperature rises. At this time, the heat is conducted to the adjacent thermal expansion fin element, causing it to expand and increase in length. The thermal expansion fin element further compresses the PTC element and the electrode, increasing the contact pressure between them. This allows the heater to maintain extremely high efficiency even in the high-temperature operating range. The thermal expansion fin element achieves the heating effect on the external object. If heating stops or the ambient temperature drops, the PTC element and the thermal expansion fin element begin to cool down. The thermal expansion fin element contracts and returns to its original length, and the pressure on the PTC element also decreases to the initial state. This cycle can be repeated countless times, achieving complete self-adaptation.

[0004] Currently, existing PTC element thermal expansion adaptive compression type PTC heaters have exposed thermal expansion fin elements with low water resistance. During long-term use, they are easily exposed to external mist. The accumulation of mist on the surface of the thermal expansion fin elements can cause short circuit leakage risk and corrosion degradation. This significantly reduces the risk of short circuit leakage and corrosion degradation of the thermal expansion fin elements in the PTC element thermal expansion adaptive compression type PTC heater.

[0005] To address this, we designed a PTC element thermal expansion adaptive compression type PTC heater to meet the needs of practical applications. Utility Model Content

[0006] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a PTC element thermal expansion adaptive compression type PTC heater.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: Design a PTC element thermal expansion adaptive compression type PTC heater, including a PTC heater, the PTC heater is composed of a first side seat, a second side seat, and a thermal expansion fin element, the thermal expansion fin element is mounted on the first side seat and the second side seat, the first side seat is provided with a power supply connection, the first side seat and the second side seat are both provided with screw grooves and mounting holes, the outer side of the PTC heater is covered with a first sealing cover and a second sealing cover, the first sealing cover and the second sealing cover are both provided with a first seal and a second seal; Both the first and second sealed covers are provided with horizontal heat-conducting blocks, and the horizontal heat-conducting blocks are provided with vertical heat-conducting blocks. Both the first and second sealed covers are provided with horizontal and vertical heat-dissipating grooves. Both the first and second sealed covers are provided with screw pins, and each screw pin is provided with a rotating handle, and the rotating handle is provided with a snap groove.

[0008] In detail, the lower ends of the first and second covers are not lower than the lower end surfaces of the first and second side seats, and the first and second side seats are Z-shaped structures in whole.

[0009] In detail, the first and second sealed covers are generally in the shape of a "π", and the first seal is evenly distributed along the inner wall of the first and second sealed covers.

[0010] In detail, there are two symmetrically arranged first seals, and the second seal is a long strip structure located between the two first seals.

[0011] In detail, the screw groove is formed on the side wall surface of the first side seat and the second side seat, and the screw groove is threadedly connected to the screw pin.

[0012] In detail, the side cross-section of the horizontal heat-conducting block is an arc-shaped structure, and the vertical heat-conducting blocks are two symmetrically arranged on the horizontal heat-conducting block. The horizontal and vertical heat-dissipating grooves are both long strip-shaped grooves, and there are twelve of them arranged in a row.

[0013] In detail, the screw pin has a pressure head at one end facing the screw groove, the rotating handle is a disc-shaped structure, the buckle groove is an arc-shaped groove with six grooves arranged in a circle, and a damping layer is provided on the inner wall of the buckle groove.

[0014] The design scheme proposed in this utility model has the following beneficial effects in application: 1. This utility model achieves complete sealing of the PTC heater by setting a first and a second sealed cover, and setting a first and a second sealing strip structure on both the first and the second sealed covers. During long-term use, it effectively avoids the risk of short circuit leakage and corrosion degradation caused by the long-term accumulation of external mist on the surface of the thermal expansion fin element. It greatly improves the short circuit leakage risk and corrosion degradation resistance of the thermal expansion fin element itself on the PTC element thermal expansion adaptive compression type PTC heater.

[0015] 2. This utility model features a transverse heat-conducting block structure with longitudinal heat-conducting blocks on both the first and second sealed covers, and transverse and longitudinal heat-dissipating grooves on both covers. When the first and second sealed covers seal the thermal expansion fin elements on the PTC heater, the transverse and longitudinal heat-conducting blocks achieve effective and good contact, thereby enabling the heat generated by the thermal expansion fin elements to be effectively and comprehensively conducted and dissipated to the outside, achieving effective heating of external objects. This ensures both the sealing and waterproofing while maintaining the heating effect of the PTC heater. Attached Figure Description

[0016] Figure 1 This is an exploded three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a first-view perspective three-dimensional schematic diagram of the first and second protective covers of this utility model in their installed state. Figure 3 For the present utility model Figure 1 A three-dimensional schematic diagram of the first dense enclosure in the middle; Figure 4 This is a second-view perspective perspective view of the first and second protective covers of this utility model in their installed state. Figure 5 For the present utility model Figure 1 A three-dimensional schematic diagram of a PTC heater.

[0017] In the figure: 1 PTC heater; 2 First side seat; 21 Power supply wiring; 22 Screw groove; 23 Mounting hole; 3 Second side seat; 4 Thermal expansion fin element; 5 First enclosure; 51 Horizontal heat dissipation groove; 52 Longitudinal heat dissipation groove; 6 Second enclosure; 60 Horizontal heat conduction block; 61 Longitudinal heat conduction block; 7 First seal; 71 Second seal; 8 Screw pin; 81 Pressure head; 9 Rotary handle; 91 Fastening groove; 92 Damping layer. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figures 1-5 A PTC element thermal expansion adaptive compression type PTC heater includes a PTC heater 1, which is composed of a first side seat 2, a second side seat 3, and a thermal expansion fin element 4. The thermal expansion fin element 4 is mounted on the first side seat 2 and the second side seat 3. The first side seat 2 is provided with a power supply wiring 21. The first side seat 2 and the second side seat 3 are both provided with screw grooves 22 and mounting holes 23. The outer side of the PTC heater 1 is covered with a first sealing cover 5 and a second sealing cover 6. The first sealing cover 5 and the second sealing cover 6 are both provided with a first seal 7 and a second seal 71. Both the first enclosure 5 and the second enclosure 6 are provided with horizontal heat-conducting blocks 60, and the horizontal heat-conducting blocks 60 are provided with vertical heat-conducting blocks 61. Both the first enclosure 5 and the second enclosure 6 are provided with horizontal diffusion grooves 51 and vertical diffusion grooves 52. Both the first and second sealed covers 5 and 6 are provided with screw pins 8, and screw pins 8 are provided with handles 9. The handles 9 are provided with slots 91. The PTC heater 1 is a thermal expansion adaptive compression type PTC heater, which is existing technology. Some existing structures are not drawn or labeled, so there is no need to elaborate.

[0020] It should be further noted that the first side seat 2 and the second side seat 3 are Z-shaped structures. The lower ends of the first cover 5 and the second cover 6 are not lower than the lower end surfaces of the first side seat 2 and the second side seat 3. When the whole assembly is installed on the lower preset mounting base by passing the bolt through the mounting hole 23, the lower ends of the first cover 5 and the second cover 6 are prevented from contacting the mounting base, thus ensuring the heat dissipation effect.

[0021] It should be further noted that the first enclosure 5 and the second enclosure 6 are in the shape of a "π". The first seal 7 is evenly arranged along the inner wall of the first enclosure 5 and the second enclosure 6. Both the first enclosure 5 and the second enclosure 6 are made of PPS polyphenylene sulfide, which is an engineering plastic with high temperature resistance and high thermal conductivity. It is impact resistant and can quickly conduct heat and then dissipate it.

[0022] It should be further noted that there are two symmetrically arranged first seals 7, and the second seal 71 is a long strip structure located between the two first seals 7. Both the first seals 7 and the second seal 71 are made of high-elastic vulcanized rubber, which is corrosion-resistant, wear-resistant, and has excellent sealing and waterproof properties.

[0023] It should be further explained that the screw groove 22 is formed on the side wall of the first side seat 2 and the second side seat 3. The screw groove 22 is threadedly connected to the screw pin 8, which realizes the effect of removing the first cover 5 and the second cover 6, thus exposing the PTC heater 1, thereby facilitating regular maintenance operations.

[0024] It should be further noted that the side cross-section of the horizontal heat-conducting block 60 is an arc-shaped structure, and there are two vertical heat-conducting blocks 61 symmetrically arranged on the horizontal heat-conducting block 60. Both the horizontal heat-conducting block 60 and the vertical heat-conducting block 61 are made of red copper, which has excellent heat conduction efficiency and is durable.

[0025] Both the horizontal dissipation groove 51 and the vertical dissipation groove 52 are long, narrow grooves arranged in a row of twelve, which greatly increases the effective heat dissipation area and thus ensures the heating effect on the external object.

[0026] It should be further explained that a pressure head 81 is provided at the end of the screw pin 8 facing the screw groove 22. The pressure head 81 is made of high elastic silicone material. When the screw pin 8 is threadedly locked with the screw groove 22, the pressure head 81 will be squeezed and generate a rebound force. This rebound force acts on the screw pin 8 to achieve the anti-loosening effect.

[0027] The handle 9 is a disc-shaped structure, and the latch 91 is an arc-shaped groove with six grooves arranged in a circle. It can be rotated by inserting a finger, which facilitates the disassembly and assembly of the first cover 5 and the second cover 6.

[0028] A damping layer 92 is provided on the inner wall of the buckle groove 91. The damping layer 92 is a polyurethane damping layer with excellent damping friction elasticity, which improves the damping and anti-slip performance when the finger is inserted into the buckle groove 91 and rotated.

[0029] Working method: The first sealing cover 5 and the second sealing cover 6 are placed on both sides of the PTC heater 1. Then, the handle 9 is rotated clockwise, which drives the screw pin 8 to rotate clockwise and lock it in place with the screw groove 22. At this time, the first sealing strip 7 on the first sealing cover 5 and the second sealing cover 6 will not only fully compress and seal the outer wall surface of the first side seat 2 and the second side seat 3, but also the first sealing strip 7 will compress and seal each other. At the same time, the second sealing strip 71 on the first sealing cover 5 and the second sealing cover 6 will also compress and seal each other, thus achieving a complete sealing of the PTC heater 1. This avoids the risk of short circuit leakage and corrosion degradation caused by the long-term accumulation of external mist on the surface of the thermal expansion fin element 4. This improves the short circuit leakage risk and corrosion degradation resistance of the thermal expansion fin element 4 on the PTC element thermal expansion adaptive compression type PTC heater.

[0030] Furthermore, after the first and second sealed covers 5 and 6 seal the thermal expansion fin element 4, the arc-shaped horizontal heat-conducting block 60 will be in close and good contact with the outer wall surface of the thermal expansion fin element 4. At the same time, the upper and lower vertical heat-conducting blocks 61 will also be in close and good contact with the outer wall surface of the thermal expansion fin element 4. The thermal expansion fin element 4 will be connected to an external power supply through the power supply wiring 21. At this time, the thermal expansion fin element 4 will be energized and generate heat (the relevant working principle has been described in the background technology of this patent and is prior art). At this time, this heat will be quickly transferred to the first and second sealed covers 5 and 6 through the horizontal heat-conducting blocks 60 and the vertical heat-conducting blocks 61. The first and second sealed covers 5 and 6, which have high thermal conductivity, can effectively and comprehensively dissipate the heat to the outside, achieving the effect of effectively heating the external object, ensuring the sealing and waterproofing while ensuring the heating effect of the PTC heater 1. The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A PTC element thermal expansion adaptive compression type PTC heater, comprising a PTC heater (1), characterized in that: The PTC heater (1) is composed of a first side seat (2), a second side seat (3), and a thermal expansion fin element (4). The thermal expansion fin element (4) is installed on the first side seat (2) and the second side seat (3). The first side seat (2) is provided with a power supply wiring (21). The first side seat (2) and the second side seat (3) are both provided with screw grooves (22) and mounting holes (23). The outer side of the PTC heater (1) is provided with a first sealing cover (5) and a second sealing cover (6). The first sealing cover (5) and the second sealing cover (6) are both provided with a first seal (7) and a second seal (71). Both the first and second sealed covers (5) are provided with horizontal heat-conducting blocks (60), and the horizontal heat-conducting blocks (60) are provided with vertical heat-conducting blocks (61). Both the first and second sealed covers (5) are provided with horizontal scattering grooves (51) and vertical scattering grooves (52). Both the first cover (5) and the second cover (6) are provided with screw pins (8), the screw pins (8) are provided with handles (9), and the handles (9) are provided with grooves (91).

2. The PTC element thermal expansion adaptive compression type PTC heater according to claim 1, characterized in that: The lower ends of the first cover (5) and the second cover (6) are not lower than the lower end surfaces of the first side seat (2) and the second side seat (3), and the first side seat (2) and the second side seat (3) are Z-shaped structures in whole.

3. A PTC element thermal expansion adaptive compression type PTC heater according to claim 1, characterized in that: The first cover (5) and the second cover (6) are in the shape of "π". The first seal (7) is evenly arranged along the inner wall of the first cover (5) and the second cover (6).

4. A PTC element thermal expansion adaptive compression type PTC heater according to claim 1, characterized in that: The first seal (7) consists of two symmetrically arranged seals, and the second seal (71) is a long strip structure and is located between the two first seals (7).

5. A PTC element thermal expansion adaptive compression type PTC heater according to claim 1, characterized in that: The screw groove (22) is formed on the side wall of the first side seat (2) and the second side seat (3), and the screw groove (22) is threadedly connected to the screw pin (8).

6. A PTC element thermal expansion adaptive compression type PTC heater according to claim 1, characterized in that: The side cross section of the horizontal heat-conducting block (60) is an arc-shaped structure. The vertical heat-conducting blocks (61) are two symmetrically arranged on the horizontal heat-conducting block (60). The horizontal scattering groove (51) and the vertical scattering groove (52) are both long strip-shaped grooves arranged in a row of twelve.

7. A PTC element thermal expansion adaptive compression type PTC heater according to claim 1, characterized in that: The screw pin (8) is provided with a pressure head (81) at one end facing the screw groove (22). The rotating handle (9) is a disc-shaped structure. The buckle groove (91) is an arc-shaped groove with six grooves arranged in a circle. A damping layer (92) is provided on the inner wall of the buckle groove (91).

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