PTC heater with heat dissipation assembly

Abstract

The invention relates to the technical field of electric heating, and discloses a PTC heater with a heat dissipation assembly, which comprises a shell and a PTC assembly, and is characterized in that the PTC assembly comprises a mounting shell, a low-voltage wire assembly and a high-voltage wire assembly are fixedly mounted at the top of the mounting shell, a plurality of partition plates are fixedly mounted on the mounting shell, a plurality of PTC heating sheets are fixedly mounted in the mounting shell, and the PTC heating sheets are arranged in the mounting shell. A flow guide plate is fixedly mounted on the side, close to the partition plate, of the PTC heating piece, and a sliding rod is fixedly mounted on the outer side of the mounting shell. Through cooperation of the PTC heating piece and the flow guide plate, water vapor on the surface of the PTC heating piece begins to condense to form water drops, the whole PTC assembly is in an inclined state, so that the water drops on the PTC heating piece flow into the flow guide plate, residual water drops on the surface of the PTC heating piece are reduced, the PTC assembly is designed in an inclined mode after being integrally installed, and therefore after the PTC assembly stops heating, the water drops on the surface of the PTC heating piece flow into the flow guide plate. And the residual quantity of water drops is reduced, so that the damage to the PTC heating sheet caused by long-time residual water drops is avoided.

Description

Technical Field

[0001] This invention relates to the field of electrothermal technology, specifically to a PTC heater equipped with a heat dissipation component. Background Technology

[0002] A PTC heater is a heat source device based on a positive temperature coefficient thermistor ceramic material. Its core principle is utilizing the unique resistance-temperature characteristics of the PTC element: initially, the element's resistance is low, leading to rapid heating; as the temperature rises, the resistance increases sharply, causing the output power to automatically decrease, ultimately achieving constant temperature heating. Compared to traditional heating wires, PTC heaters offer advantages such as no open flame, self-limiting temperature, and rapid thermal response, making them widely used in HVAC, home appliance, and industrial temperature control fields. However, their efficient operation relies on proper heat management.

[0003] PTC heaters typically operate in enclosed or semi-enclosed environments, such as auxiliary heating modules for air conditioning, battery insulation compartments in new energy vehicles, and small drying equipment. In these scenarios, if the continuous heat generated cannot be dissipated in time, it can easily lead to localized high temperatures, which not only reduces heating efficiency but may also accelerate component aging and even cause safety hazards. Especially in scenarios such as automotive defrosting in winter and precision temperature control in industry, the requirements for heat dissipation stability are even higher, and traditional passive cooling is difficult to meet the needs. Therefore, it is necessary to integrate active cooling components to optimize thermal balance.

[0004] PTC heaters are mostly used in automotive air conditioning systems. When used in winter, a large number of water droplets will form on the heating plate after the PTC heating ends. The water droplets will remain on the heating plate for a long time. The presence of water droplets will reduce the insulation performance of the PTC surface, increase the risk of leakage, and may cause short circuits or malfunctions. The long-term presence of water droplets may accelerate the corrosion of the PTC surface, especially in harsh environments. Corrosion will gradually damage the performance of the PTC and shorten its service life. Summary of the Invention

[0005] In view of this, a PTC heater with a heat dissipation component is proposed to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a PTC heater equipped with a heat dissipation component, comprising a housing and a PTC component, and further comprising:

[0007] The PTC component is embedded in the housing. The PTC component includes a mounting shell. A low-voltage line assembly and a high-voltage line assembly are fixedly mounted on the top of the mounting shell. Multiple partitions are fixedly mounted on the mounting shell. Multiple PTC heating elements are fixedly mounted inside the mounting shell. A guide plate is fixedly mounted on the side of the PTC heating element near the partition. A sliding rod is fixedly mounted on the outside of the mounting shell. The guide plate is used to guide the condensate when water droplets appear on the PTC heating element.

[0008] Preferably, the guide plates are arranged in multiple sets in the vertical direction, and guide pipes are fixedly installed between adjacent guide plates. A receiving groove is provided at the bottom of the guide pipe. Several grooves are opened on the guide plates. A guide block is fixedly installed on one side of the guide plate. A guide groove is opened on the guide block, and the guide pipe is located in the guide groove.

[0009] Preferably, a guide plate is fixedly installed inside the guide block, and the guide plate is inclined along the direction of water droplet movement.

[0010] Preferably, the outer shell includes a housing, a top frame is fixedly installed on the inner wall of the housing, a protective pad is fixedly installed on the inner wall of the housing, a sliding groove is fixedly installed below the protective pad, two air blowing grooves are opened on the bottom plate of the housing, and a clamping block is provided on the bottom plate of the housing between the two air blowing grooves.

[0011] Preferably, the top frame has a plurality of through slots, the number of which is the same as that of the high-voltage line assembly and the low-voltage line assembly, and the size of the through slots is adapted to the high-voltage line assembly and the low-voltage line assembly.

[0012] Preferably, a cooling plate is rotatably mounted on the side wall of the housing, and the cooling plate has a plurality of sieve holes.

[0013] Preferably, a plurality of return springs are fixedly installed on the back of the cooling plate, one end of the return springs being fixedly connected to the cooling plate and the other end of the return springs being fixedly connected to the top frame.

[0014] Preferably, a mounting box is fixedly mounted on the housing, and a plurality of connecting rods are rotatably mounted on the lower end of the mounting box. A cam is fixedly mounted on the end of the connecting rod away from the mounting box.

[0015] Preferably, the top of the housing has several buzzer holes, and the buzzer holes are located inside the mounting box.

[0016] Preferably, the PTC component is disposed at an angle inside the housing, and the bottom of the PTC component is in close contact with the clamping block.

[0017] Compared with the prior art, the present invention provides a PTC heater with a heat dissipation component, which has the following advantages:

[0018] 1. This invention utilizes the combination of a PTC heating element and a guide plate. Water vapor on the surface of the PTC heating element will begin to condense into water droplets. Since the PTC assembly is tilted, the water droplets on the PTC heating element will flow into the guide plate, thereby reducing the amount of water droplets remaining on the surface of the PTC heating element. Furthermore, the tilted design of the PTC assembly after installation reduces the amount of water droplets remaining after the PTC assembly stops heating, thus preventing damage to the PTC heating element caused by prolonged water droplet retention.

[0019] 2. This invention, through the cooperation of a guide plate, a guide pipe, and a collection tank, allows water droplets on the tilted PTC component to move along the guide plate to the guide pipe and then into the collection tank. The collection tank collects the condensed water droplets, and a large number of water droplets stop moving within it. The water droplets are absorbed by the sponge pad inside the collection tank, and at this point, the water droplets no longer move within the collection tank and begin to evaporate slowly. During vehicle operation, air continuously enters the collection tank through the air inlet. The upper baffle reduces the speed at which air flows out of the collection tank, thereby increasing the contact time between the water droplets and the air within the collection tank and accelerating the evaporation rate.

[0020] 3. Through the cooperation of the mounting box and the cooling plate, some of the suspended water vapor will condense into water after contacting the cooling plate. The water will slide down the outer wall of the cooling plate and into the collection groove, thus ensuring that the humidity inside the shell is not too high. At the same time, the cam in the mounting box can be manually activated to periodically squeeze the cooling plate, and some impurities stuck on the cooling plate will fall off, reducing the impact on heat dissipation. Attached Figure Description

[0021] Figure 1 This is an overall structural diagram of the present invention;

[0022] Figure 2 This is an overall structural diagram of the outer casing of the present invention;

[0023] Figure 3 This is an overall structural diagram of the PTC component of the present invention;

[0024] Figure 4 This is a structural diagram of the outer casing of the present invention equipped with a cooling plate;

[0025] Figure 5 This is a structural diagram of the guide plate of the present invention;

[0026] Figure 6 This is a detailed structural diagram of the guide plate of the present invention;

[0027] Figure 7 This is a diagram showing the internal structure of the flow guide block of the present invention;

[0028] Figure 8 This is a structural diagram of the back of the cooling plate of the present invention;

[0029] Figure 9 This is an overall structural diagram of the mounting box of the present invention.

[0030] In the picture:

[0031] 1. Outer shell; 11. Housing; 12. Top frame; 13. Protective pad; 14. Slide groove; 15. Air blowing groove; 16. Return spring; 17. Mounting box; 171. Connecting rod; 172. Cam; 18. Cooling plate; 19. Buzzer hole;

[0032] 2. Clamping block;

[0033] 3. PTC assembly; 31. Mounting housing; 32. Low-voltage line assembly; 33. High-voltage line assembly; 34. Partition plate; 35. Slide rod; 36. PTC heating element; 37. Guide plate; 371. Tank; 372. Guide block; 373. Guide channel; 374. Guide plate; 38. Guide pipe; 39. Storage slot. Detailed Implementation

[0034] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, some features described in the examples may be combined in other examples.

[0035] like Figures 1 to 9 As shown, this embodiment of the invention provides a PTC heater with a heat dissipation component, including a housing 1 and a PTC component 3, and further comprising:

[0036] The PTC component 3 is embedded in the housing 1. The PTC component 3 includes a mounting shell 31. A low-voltage line assembly 32 and a high-voltage line assembly 33 are fixedly mounted on the top of the mounting shell 31. Multiple partitions 34 are fixedly mounted on the mounting shell 31. Multiple PTC heating elements 36 are fixedly mounted inside the mounting shell 31. A guide plate 37 is fixedly mounted on the side of the PTC heating element 36 near the partition 34. A slide rod 35 is fixedly mounted on the outside of the mounting shell 31. The guide plate 37 is used to guide the condensate when water droplets appear on the PTC heating element 36.

[0037] The working principle and beneficial effects of the above technical solution are as follows: In use, the device is fixedly installed in the corresponding position inside the car by the bolt bracket on the outer shell 1. Then, the PTC component 3 is installed inside the outer shell 1 at an angle. The top of the PTC component 3 is equipped with a high-voltage wire assembly 33 and a low-voltage wire assembly 32. The high-voltage wire assembly 33 and the low-voltage wire assembly 32 are respectively installed with the electrical components of the car. When the car needs to be heated, the PTC heating element 36 inside the PTC component 3 is energized and heats up. At this time, the blower inside the car blows air into the high-voltage wire assembly 33. The air is heated by the PTC component 3 and then delivered into the car, thus completing the heating. After the PTC component 3 stops heating, as the temperature drops, the water vapor on the surface of the PTC heating element 36 will begin to condense and form water droplets. Since the PTC component 3 is tilted, the water droplets on the PTC heating element 36 will flow into the guide plate 37, thereby reducing the residue of water droplets on the surface of the PTC heating element 36.

[0038] In one embodiment: multiple sets of guide plates 37 are arranged in the vertical direction, and guide pipes 38 are fixedly installed between adjacent guide plates 37. A receiving groove 39 is provided at the bottom of the guide pipe 38. Several grooves 371 are opened on the guide plate 37. A guide block 372 is fixedly installed on one side of the guide plate 37. A guide groove 373 is opened on the guide block 372, and the guide pipe 38 is located in the guide groove 373.

[0039] The working principle and beneficial effects of the above technical solution are as follows: When water droplets flow into the guide plate 37, the water droplets will move to the guide block 372 under the guidance of the groove 371 on the guide plate 37, continue to move in the guide groove 373 on the guide block 372, and finally enter the collection groove 39.

[0040] In one embodiment, a guide plate 374 is fixedly installed inside the guide block 372, and the guide plate 374 is inclined along the direction of water droplet movement.

[0041] The working principle and beneficial effects of the above technical solution are as follows: There are two guide plates 374 on the guide block 372, and the distance between the two guide plates 374 is about 0.5cm. When the water droplet is located between the guide plates 374, due to the surface tension of the water droplet itself, it will move on the guide plate 374 and slide down along the inclined direction of the guide plate 374. The guide plate 374 is coated with a coating.

[0042] In one embodiment: the outer casing 1 includes a casing 11, a top frame 12 is fixedly installed on the inner wall of the casing 11, a protective pad 13 is fixedly installed on the inner wall of the casing 11, a sliding groove 14 is fixedly installed below the protective pad 13, two air blowing grooves 15 are opened on the bottom plate of the casing 11, and a clamping block 2 is provided on the bottom plate of the casing 11 between the two air blowing grooves 15.

[0043] The working principle and beneficial effects of the above technical solution are as follows: the top frame 12 can fix the low voltage line assembly 32 and the high voltage line assembly 33, reducing their shaking amplitude; the protective pad 13 can prevent the PTC assembly 3 from directly contacting the outer casing 1 when the car moves and causes the PTC assembly 3 to shake, thus preventing damage to the PTC assembly 3; at the same time, the slide groove 14 cooperates with the slide rod 35 to make the installation of the PTC assembly 3 more convenient; the air blowing groove 15 is equipped with a fan, which can blow out cold air and hot air as needed.

[0044] In one embodiment, the top frame 12 is provided with a plurality of through slots, the number of through slots being the same as that of the high voltage line assembly 33 and the low voltage line assembly 32, and the size of the through slots being adapted to the high voltage line assembly 33 and the low voltage line assembly 32.

[0045] The working principle and beneficial effects of the above technical solution are as follows: the high-voltage wire assembly 33 and the low-voltage wire assembly 32 are installed with the electrical components of the car respectively. When the car needs to be heated, the PTC heating element 36 inside the PTC assembly 3 is energized and heats up. At this time, the blower inside the car blows air into the high-voltage wire assembly 33. The air is heated by the PTC assembly 3 and then delivered into the car, thus completing the heating. The top bracket 12 can prevent the high-voltage wire assembly 33 and the low-voltage wire assembly 32 from shaking, ensuring the stability of the connection.

[0046] In one embodiment, a cooling plate 18 is rotatably mounted on the side wall of the housing 11, and the cooling plate 18 has a plurality of sieve holes.

[0047] The working principle and beneficial effects of the above technical solution are as follows: The cooling plate 18 is inclinedly set on the inner wall of the outer casing 1. The sieve holes can prevent impurities from entering the interior of the outer casing 1. When the vehicle is driven in snowy weather, the PTC air conditioner is used for heating while idling for a long time. The exhaust pipe outlet is partially blocked by snow accumulation, and the exhaust gas flows back into the engine compartment, causing the temperature inside the compartment to rise from 80℃ to 110℃. At this time, the temperature will indirectly affect the temperature of the PTC component 3. Turning on the fan to blow out cold air can dissipate heat from the inside of the PTC component 3 through the cooperation of the cooling plate 18 and the fan, preventing the PTC component 3 from malfunctioning due to excessive temperature.

[0048] In one embodiment, a plurality of return springs 16 are fixedly installed on the back of the cooling plate 18. One end of the return spring 16 is fixedly connected to the cooling plate 18, and the other end of the return spring 16 is fixedly connected to the top frame 12.

[0049] The working principle and beneficial effects of the above technical solution are as follows: When in use, some dust or impurities will come into contact with the cooling plate 18. Some impurities will accumulate together due to static electricity, resulting in an increase in volume, which will cause the sieve holes on the cooling plate 18 to be blocked, thus weakening the heat dissipation effect. At this time, the cooling plate 18 will be shaken by external force. Under the action of the return spring 16, the cooling plate 18 will move back and forth. When it comes into contact with the protective pad 13, it will vibrate, causing the accumulated impurities to disperse and thus cleaning the sieve holes. At the same time, the protective pad 13 can prevent the cooling plate 18 from being damaged by collision.

[0050] In one embodiment: a mounting box 17 is fixedly mounted on the housing 11, and a plurality of connecting rods 171 are rotatably mounted on the lower end of the mounting box 17. A cam 172 is fixedly mounted on the end of the connecting rod 171 away from the mounting box 17.

[0051] The working principle and beneficial effects of the above technical solution are as follows: the connecting rod 171 inside the mounting box 17 is connected to an external power source. When the external power source is turned on, the connecting rod 171 will rotate, which will cause the cam 172 at the lower end of the connecting rod 171 to rotate. The cam 172 contacts the cooling plate 18, which will cause the cooling plate 18 to swing back and forth, making it easier to clean the cooling plate 18.

[0052] In one embodiment, the top of the housing 11 is provided with a plurality of buzzer holes 19, and the buzzer holes 19 are located inside the mounting box 17.

[0053] The working principle and beneficial effects of the above technical solution are as follows: When this device is in use, it is impossible to know whether the cooling plate 18 is blocked by direct observation. When the cooling plate 18 is blocked, the gas blown out by the fan in the air blowing channel 15 will make the water droplets in the outer shell 1 evaporate faster. When the evaporated water vapor comes into contact with the cooling plate 18, it will condense upon cooling and slide down the cooling plate 18. Some water vapor will escape to the outside through the sieve holes on the cooling plate 18. After the blockage occurs, the total amount of water vapor in the same time period remains basically unchanged. Some water vapor that cannot escape through the sieve holes will be blown out through the buzzer hole 19, thus emitting a buzzer sound to remind that the cooling plate 18 needs to be cleaned.

[0054] In one embodiment, the PTC component 3 is disposed at an angle inside the housing 1, and the bottom of the PTC component 3 is in close contact with the clamping block 2.

[0055] The working principle and beneficial effects of the above technical solution are as follows: When installation or disassembly is required, press the clamping block 2 on the outside of the outer shell 1 to make the clamping block 2 rotate, thereby realizing the disassembly and installation of the PTC component 3. In addition, the cooperation between the clamping block 2 and the top frame 12 can fix the PTC component 3 and prevent it from shaking.

[0056] Working principle and usage process: During use, the device is fixedly installed in the corresponding position inside the car using the bolt bracket on the outer casing 1. Then, the PTC component 3 is installed inside the outer casing 1 at an angle. The high-voltage wire assembly 33 and the low-voltage wire assembly 32 are installed on the top of the PTC component 3. The high-voltage wire assembly 33 and the low-voltage wire assembly 32 are respectively installed with the electrical components of the car. When the car needs to be heated, the PTC heating element 36 inside the PTC component 3 is energized and heats up. At this time, the blower inside the car blows air into the high-voltage wire assembly 33. The air is heated by the PTC component 3 and then delivered into the car, thus completing the heating. After the PTC component 3 stops heating, as the temperature drops, the water vapor on the surface of the PTC heating element 36 will begin to condense and form water droplets. Since the PTC component 3 is tilted, the water droplets on the PTC heating element 36 will flow into the guide plate 37, thereby reducing the water droplet residue on the surface of the PTC heating element 36.

[0057] Specifically, when water droplets flow into the guide plate 37, they move to the guide block 372 under the guidance of the groove 371 on the guide plate 37. They continue to move in the guide groove 373 on the guide block 372 and finally enter the collection groove 39. There are two guide plates 374 on the guide block 372, and the distance between the two guide plates 374 is about 0.5cm. When the water droplets are between the guide plates 374, due to the surface tension of the water droplets, they will move on the guide plates 374 and slide down along the inclined direction of the guide plates 374. The guide plates 374 are coated with a coating.

[0058] Importantly, the top bracket 12 can fix the low-voltage line assembly 32 and the high-voltage line assembly 33, reducing their swaying amplitude. The protective pad 13 can prevent the PTC assembly 3 from directly contacting the housing 1 when the vehicle moves and causes the PTC assembly 3 to shake, thus preventing damage to the PTC assembly 3. At the same time, the slide 14 cooperates with the slide rod 35 to make the installation of the PTC assembly 3 more convenient. The air blowing slot 15 is equipped with a fan, which can blow out cold air and hot air as needed.

[0059] Furthermore, the cooling plate 18 is inclinedly mounted on the inner wall of the housing 1, and the sieve holes prevent impurities from entering the interior of the housing 1. When the vehicle is driven in snowy weather, the PTC air conditioning is used for heating while idling for a long time. The exhaust pipe outlet is partially blocked by snow accumulation, and exhaust gas flows back into the engine compartment, causing the temperature inside the compartment to rise from 80°C to 110°C. At this time, the temperature will indirectly affect the temperature of the PTC component 3. Turning on the fan to blow out cold air can dissipate heat from the inside of the PTC component 3 through the cooperation of the cooling plate 18 and the fan, preventing the PTC component 3 from malfunctioning due to excessive temperature.

[0060] In addition, during use, some dust or impurities will come into contact with the cooling plate 18. Some impurities will clump together due to static electricity, causing them to increase in size and block the sieve holes on the cooling plate 18, which will reduce the heat dissipation effect. At this time, the cooling plate 18 will be shaken by external force. Under the action of the return spring 16, the cooling plate 18 will move back and forth. When it comes into contact with the protective pad 13, it will vibrate, causing the clump of impurities to disperse and thus clean the sieve holes. At the same time, the protective pad 13 can prevent the cooling plate 18 from being damaged by collision.

[0061] It is worth noting that the connecting rod 171 inside the mounting box 17 is connected to an external power source. Turning on the external power source will cause the connecting rod 171 to rotate, which in turn causes the cam 172 at the lower end of the connecting rod 171 to rotate. The cam 172 contacts the cooling plate 18, which causes the cooling plate 18 to swing back and forth, making it easier to clean the cooling plate 18.

[0062] Finally, during use, it is impossible to know whether the cooling plate 18 is blocked by direct observation. When the cooling plate 18 is blocked, the air blown out by the fan in the air blowing channel 15 will cause the water droplets in the outer shell 1 to evaporate faster. When the evaporated water vapor comes into contact with the cooling plate 18, it will condense upon cooling and slide down the cooling plate 18. Some water vapor will also escape to the outside through the sieve holes on the cooling plate 18. After the blockage occurs, the total amount of water vapor in the same time period remains basically unchanged. Some water vapor that cannot escape through the sieve holes will be blown out through the buzzer hole 19, thus emitting a buzzer sound to remind that the cooling plate 18 needs to be cleaned.

[0063] The embodiments of the present invention have been described above, but the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.

Claims

1. A PTC heater equipped with a heat dissipation component, comprising a housing (1) and a PTC component (3), characterized in that, Also includes: The PTC component (3) is embedded in the housing (1). The PTC component (3) includes a mounting shell (31). A low-voltage line assembly (32) and a high-voltage line assembly (33) are fixedly mounted on the top of the mounting shell (31). Multiple partitions (34) are fixedly mounted on the mounting shell (31). Multiple PTC heating elements (36) are fixedly mounted inside the mounting shell (31). A guide plate (37) is fixedly mounted on the side of the PTC heating element (36) near the partition (34). A slide rod (35) is fixedly mounted on the outside of the mounting shell (31). The guide plate (37) is used to guide the condensate when water droplets appear on the PTC heating element (36).

2. A PTC heater with a heat dissipation component according to claim 1, characterized in that: The guide plate (37) is provided in multiple sets in the vertical direction. A guide pipe (38) is fixedly installed between adjacent guide plates (37). A receiving groove (39) is provided at the bottom of the guide pipe (38). Several grooves (371) are opened on the guide plate (37). A guide block (372) is fixedly installed on one side of the guide plate (37). A guide groove (373) is opened on the guide block (372). The guide pipe (38) is located in the guide groove (373).

3. A PTC heater with a heat dissipation component according to claim 2, characterized in that: A guide plate (374) is fixedly installed inside the flow guide block (372), and the guide plate (374) is inclined along the direction of water droplet movement.

4. A PTC heater with a heat dissipation component according to claim 3, characterized in that: The outer shell (1) includes a shell (11), a top frame (12) is fixedly installed on the inner wall of the shell (11), a protective pad (13) is fixedly installed on the inner wall of the shell (11), a sliding groove (14) is fixedly installed below the protective pad (13), two air blowing grooves (15) are opened on the bottom plate of the shell (11), and a clamping block (2) is provided on the bottom plate of the shell (11) between the two air blowing grooves (15).

5. A PTC heater with a heat dissipation component according to claim 4, characterized in that: The top frame (12) has several through slots, the number of which is the same as that of the high voltage line assembly (33) and the low voltage line assembly (32), and the size of the through slots is adapted to the high voltage line assembly (33) and the low voltage line assembly (32).

6. A PTC heater with a heat dissipation component according to claim 5, characterized in that: A cooling plate (18) is rotatably mounted on the side wall of the housing (11), and the cooling plate (18) has a number of sieve holes.

7. A PTC heater with a heat dissipation component according to claim 6, characterized in that: A number of return springs (16) are fixedly installed on the back of the cooling plate (18). One end of the return spring (16) is fixedly connected to the cooling plate (18), and the other end of the return spring (16) is fixedly connected to the top frame (12).

8. A PTC heater with a heat dissipation component according to claim 7, characterized in that: An installation box (17) is fixedly installed on the housing (11). Several connecting rods (171) are rotatably installed at the lower end of the installation box (17). A cam (172) is fixedly installed at the end of the connecting rod (171) away from the installation box (17).

9. A PTC heater with a heat dissipation component according to claim 8, characterized in that: The top of the housing (11) is provided with several buzzer holes (19), and the buzzer holes (19) are located inside the mounting box (17).

10. A PTC heater with a heat dissipation component according to claim 9, characterized in that: The PTC component (3) is inclinedly disposed inside the housing (1), and the bottom of the PTC component (3) is in close contact with the clamping block (2).

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