Anti-static PTC heater

Abstract

The invention discloses an anti-static PTC heater which comprises side protection plates, a safe heating mechanism, an adjusting mechanism, a mounting mechanism and a heat dissipation mechanism. The side protection plates are distributed in a bilateral symmetry mode, and top protection plates are fixed to the inner sides of the side protection plates in a longitudinal symmetry mode. The safe heating mechanism is installed on the inner side of the side protection plate, the safe heating mechanism is composed of a first anti-static aluminum oxide ceramic shell, an insulating shell, fire extinguishing air bags and PTC ceramic chips, and the fire extinguishing air bags are distributed in the insulating shell at equal intervals and are arranged in a vertically symmetrical mode; the adjusting mechanism comprises a first handle, a connecting rod and a first supporting spring. According to the anti-static PTC heater, fire can be quickly extinguished at the initial stage of fire, the heater can be effectively prevented from being burnt, safety is guaranteed, the PTC ceramic chip can be disassembled for overhauling, faults of the PTC ceramic chip can be conveniently checked, the service life is prolonged, the anti-static effect is good, hardware damage caused by static electricity can be effectively prevented, and potential safety hazards are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of PTC heaters, and specifically to an anti-static PTC heater. Background Art

[0002] A PTC heater is a heater that generates heat through a PTC ceramic heating element, and is widely used in heating equipment in appliances such as air conditioners, dryers, and automobiles. After the PTC thermistor is powered on, it self-heats and the resistance value enters the jump region, keeping its surface temperature within a constant range. There are various PTC heaters on the market;

[0003] For example, the invention with the authorization announcement number CN115243407B discloses a PTC thermistor heater and its heat dissipation base. The heat dissipation base includes a cavity and heat dissipation fins provided on the upper surface and / or lower surface of the cavity; the cavity is provided with a first limiting rib and a second limiting rib to limit the heating core and prevent its insulating film from bulging; the inner wall of the cavity is also provided with first and second receiving grooves for accommodating the non-fixed side; the left and right side walls of the cavity are both set to have a tendency to deform inward during pressing, and are provided with first and second avoidance gaps to accommodate the space for side wall deformation; with the above structural settings, it can avoid the problems of friction and extrusion damage to the insulating film / PTC sheet of the heating core by the left and right side walls during pressing, and can also avoid the problems of friction and extrusion damage to the insulating film / PTC sheet of the heating core by the first limiting rib and the second limiting rib, thus thoroughly solving the problems of electrical leakage and tube explosion in the heaters made of the existing heat dissipation base;

[0004] However, the above technical solutions still have some disadvantages, such as being prone to catching fire due to high temperature when a failure occurs, the combustion of the heater will cause, it is not convenient to disassemble the PTC ceramic sheet for maintenance, it is difficult to troubleshoot the faults of the PTC ceramic sheet, the service life is short, the anti-static effect is not good, static electricity will cause hardware damage, and there are great safety hazards. Therefore, we propose an anti-static PTC heater to solve the problems raised above. Summary of the Invention

[0005] The purpose of the present invention is to provide an anti-static PTC heater to solve the problems in the above background art that the current PTC heater is prone to catching fire due to high temperature when a failure occurs, the combustion of the heater will cause, it is not convenient to disassemble the PTC ceramic sheet for maintenance, it is difficult to troubleshoot the faults of the PTC ceramic sheet, the service life is short, the anti-static effect is not good, static electricity will cause hardware damage, and there are great safety hazards.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An anti-static PTC heater, comprising:

[0007] Side protection plates, which are symmetrically distributed left and right, and top protection plates are symmetrically fixed up and down on the inner sides of the side protection plates;

[0008] It also includes:

[0009] A safety heating mechanism, which is installed on the inner side of the side protection plate. The safety heating mechanism is composed of a first anti-static alumina ceramic shell, an insulating shell, fire extinguishing airbags and PTC ceramic chips. The fire extinguishing airbags are equidistantly distributed in the insulating shell and are symmetrically arranged up and down;

[0010] An adjusting mechanism, which includes a first handle, a connecting rod and a first support spring. The connecting rod is slidably connected in the PTC ceramic chip through the first support spring;

[0011] An installation mechanism, which includes a maintenance installation plate, limit blocks, second support springs and second handles. The limit blocks are equidistantly distributed on the second handles, and the limit blocks are slidably connected in the maintenance installation plate through the second support springs;

[0012] A heat dissipation mechanism, which includes a second anti-static ceramic shell, an electrostatic conductive coating layer, an aluminum shell and heat sinks. The heat sinks are equidistantly arranged in the aluminum shell.

[0013] Preferably, a conductive cable is installed inside the side protection plate, and the conductive cable is connected to the PTC ceramic chip.

[0014] Preferably, a first anti-static alumina ceramic shell is installed in the middle of the inner side of the side protection plate, and an insulating shell is fixed inside the first anti-static alumina ceramic shell. Fire extinguishing airbags are installed inside the insulating shell, and the fire extinguishing airbags are filled with heptafluoropropane gas.

[0015] Preferably, PTC ceramic chips are arranged inside the fire extinguishing airbags, and a connecting rod is connected to the front inner part of the PTC ceramic chips through a mounting groove, wherein the cross-section of the connecting rod is in a "T" shape structure.

[0016] Preferably, a rubber insulating sheet is closely attached to the front side of the PTC ceramic chip, and a maintenance installation plate is fixed on the front side of the rubber insulating sheet. The maintenance installation plate is connected to the first anti-static alumina ceramic shell through a mounting groove.

[0017] Preferably, a first support spring is wound around the outer side of the connecting rod, and a first handle is fixed at the front end of the connecting rod. The first handle is connected to the PTC ceramic chip through a mounting groove.

[0018] Preferably, limit blocks are installed inside the upper and lower sides of the maintenance installation plate, second support springs are installed inside the limit blocks, and second handles are welded to the outer sides of the limit blocks.

[0019] Preferably, second anti-static ceramic shells are installed on both the upper and lower sides of the first anti-static alumina ceramic shell, and an aluminum shell is installed inside the second anti-static ceramic shell. An electrostatic conductive coating layer is sprayed on the outer side of the aluminum shell.

[0020] Preferably, heat sinks are installed inside the aluminum shell, and the heat sinks are arranged at equal intervals.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: The anti-static PTC heater can quickly extinguish fire in the initial stage of fire, effectively avoid the combustion of the heater, ensure safety, can disassemble the PTC ceramic sheet for maintenance, facilitate the troubleshooting of faults of the PTC ceramic sheet, extend the service life, has good anti-static effect, can effectively prevent hardware damage caused by static electricity, and reduce potential safety hazards;

[0022] 1. An insulating shell, a fire extinguishing airbag and a PTC ceramic sheet are provided. Fire extinguishing airbags are installed on both the upper and lower sides of the PTC ceramic sheet. When the temperature of the PTC ceramic sheet is too high and causes a fire, the fire extinguishing airbag automatically ruptures due to high temperature or fire, and the heptafluoropropane gas filled in the fire extinguishing airbag overflows and undergoes thermal decomposition, which can quickly extinguish the fire in the initial stage of fire, effectively avoid the combustion of the heater, ensure safety, and the fire extinguishing airbags are distributed at equal intervals to ensure heat conduction;

[0023] 2. A limiting block, a second support spring and a second handle are provided. The limiting block is slidably connected in the maintenance and installation plate through the second support spring. Press the second handle inward, and the second handle drives the limiting blocks fixed at equal intervals at its rear end to move, so that the limiting blocks slide in the maintenance and installation plate connected with its card slots, and the position of the limiting blocks can be adjusted to make the limiting blocks disengage from the first anti-static alumina ceramic shell, and the PTC ceramic sheet can be disassembled for maintenance, which is convenient for troubleshooting the faults of the PTC ceramic sheet, extends the service life, and has good anti-static effect;

[0024] 3. A first handle, a connecting rod and a first support spring are provided. The maintenance and installation plate is placed into the first anti-static alumina ceramic shell. The connecting rod is slidably connected in the PTC ceramic sheet through the first support spring. The first support spring can drive the first handle to move. Push the first handle to make the first handle and the PTC ceramic sheet connected by card slots. The connecting rod fixed at the rear side of the first handle drives the first support spring to stretch, and the first handle can be pulled to make the PTC ceramic sheet disengage from the card slot connection with the first anti-static alumina ceramic shell, and the operation is simple and fast;

[0025] 4. An electrostatic conductive coating layer, an aluminum shell and an insulating shell are provided. An insulating shell is installed on the outer side of the first anti-static alumina ceramic shell, an aluminum shell is installed on the outer side of the heat sink, and an electrostatic conductive coating layer is sprayed on the outer side of the aluminum shell, which can effectively prevent hardware damage caused by static electricity and reduce potential safety hazards. Description of the Drawings

[0026] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 is a schematic diagram of the side view sectional structure of the present invention;

[0028] Figure 3 is a schematic diagram of the overall sectional structure of the present invention;

[0029] Figure 4 is the present invention Figure 3 schematic diagram of the enlarged structure at A in;

[0030] Figure 5 is a schematic diagram of the overall structure of the connection between the first anti-static alumina ceramic housing and the maintenance and installation plate of the present invention;

[0031] Figure 6 is a schematic diagram of the overall structure of the connection between the first anti-static alumina ceramic housing and the PTC ceramic sheet of the present invention;

[0032] Figure 7 is a schematic diagram of the overall structure of the connection between the maintenance and installation plate and the limiting block of the present invention;

[0033] Figure 8 is the present invention Figure 5 schematic diagram of the enlarged structure at B in;

[0034] Figure 9 is the present invention Figure 6 schematic diagram of the enlarged structure at C in;

[0035] Figure 10 is the present invention Figure 7 schematic diagram of the enlarged structure at D in;

[0036] Figure 11 is a schematic diagram of the overall structure of the heat dissipation mechanism of the present invention.

[0037] In the figure: 1, side protection plate; 2, conductive cable; 3, safety heating mechanism; 4, first anti-static alumina ceramic housing; 5, insulating housing; 6, fire extinguishing airbag; 7, PTC ceramic sheet; 8, first handle; 9, connecting rod; 10, first support spring; 11, rubber insulating sheet; 12, maintenance and installation plate; 13, limiting block; 14, second support spring; 15, second handle; 16, second anti-static ceramic housing; 17, static conductive coating layer; 18, aluminum housing; 19, heat sink; 20, top protection plate. Detailed implementation manners

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] Please refer to Figure 1-11 , the present invention provides a technical solution: an anti-static PTC heater, comprising:

[0040] Side protection plates 1, the side protection plates 1 are symmetrically distributed left and right, and top protection plates 20 are symmetrically fixed up and down on the inner sides of the side protection plates 1;

[0041] It further comprises:

[0042] A safety heating mechanism 3, the safety heating mechanism 3 is installed on the inner side of the side protection plate 1, and the safety heating mechanism 3 is composed of a first anti-static alumina ceramic shell 4, an insulating shell 5, a fire extinguishing airbag 6 and a PTC ceramic sheet 7. The fire extinguishing airbags 6 are equally spaced in the insulating shell 5 and are symmetrically arranged up and down;

[0043] An adjusting mechanism, the adjusting mechanism includes a first handle 8, a connecting rod 9 and a first support spring 10, and the connecting rod 9 is slidably connected in the PTC ceramic sheet 7 through the first support spring 10;

[0044] An installation mechanism, the installation mechanism includes a maintenance installation plate 12, a limiting block 13, a second support spring 14 and a second handle 15. The limiting blocks 13 are equally spaced on the second handle 15, and the limiting blocks 13 are slidably connected in the maintenance installation plate 12 through the second support spring 14;

[0045] A heat dissipation mechanism, the heat dissipation mechanism includes a second anti-static ceramic shell 16, an electrostatic conductive coating layer 17, an aluminum shell 18 and heat dissipation fins 19, and the heat dissipation fins 19 are equally spaced in the aluminum shell 18.

[0046] Adopting the above technical solution, the safety heating mechanism 3 is composed of the first anti-static alumina ceramic shell 4, the insulating shell 5, the fire extinguishing airbag 6 and the PTC ceramic sheet 7, which can ensure safety. The maintenance installation plate 12, the limiting block 13, the second support spring 14 and the second handle 15 are combined to form an installation mechanism, which is convenient for disassembly and maintenance and ensures the service life. The second anti-static ceramic shell 16, the electrostatic conductive coating layer 17, the aluminum shell 18 and the heat dissipation fins 19 are combined to form a heat dissipation mechanism, and the anti-static effect is good.

[0047] As shown in the attached Figure 1 , a conductive cable 2 is installed inside the side protection plate 1, and the conductive cable 2 is connected to the PTC ceramic sheet 7.

[0048] With the above technical solution, a conductive cable 2 is installed inside the side protection plate 1, and the conductive cable 2 is connected to the PTC ceramic sheet 7, which is convenient for control.

[0049] As shown in the attached Figure 2 , attached Figure 3 and attached Figure 4 As shown in the attached figures, a first anti-static alumina ceramic shell 4 is installed in the middle of the inner side of the side protection plate 1, and an insulating shell 5 is fixed inside the first anti-static alumina ceramic shell 4. A fire extinguishing airbag 6 is installed inside the insulating shell 5, and the fire extinguishing airbag 6 is filled with heptafluoropropane gas.

[0050] With the above technical solution, a fire extinguishing airbag 6 is installed inside the insulating shell 5, and the fire extinguishing airbag 6 is filled with heptafluoropropane gas, which can effectively suppress the fire.

[0051] As shown in the attached Figure 5 - attached Figure 9 As shown in the attached figures, a PTC ceramic sheet 7 is arranged inside the fire extinguishing airbag 6, and a connecting rod 9 is connected to the front inner part of the PTC ceramic sheet 7 through a mounting slot, wherein the cross-section of the connecting rod 9 is in a "T" shape structure.

[0052] With the above technical solution, a PTC ceramic sheet 7 is arranged inside the fire extinguishing airbag 6, and a connecting rod 9 is connected to the front inner part of the PTC ceramic sheet 7 through a mounting slot, which is convenient for adjusting the position of the first handle 8.

[0053] As shown in the attached Figure 5 - attached Figure 9 As shown in the attached figures, a rubber insulating sheet 11 is closely attached to the front side of the PTC ceramic sheet 7, and a maintenance mounting plate 12 is fixed to the front side of the rubber insulating sheet 11, and the maintenance mounting plate 12 is connected to the inside of the first anti-static alumina ceramic shell 4 through a mounting slot.

[0054] With the above technical solution, a rubber insulating sheet 11 is closely attached to the front side of the PTC ceramic sheet 7, and a maintenance mounting plate 12 is fixed to the front side of the rubber insulating sheet 11, and the sealing effect is good.

[0055] As shown in the attached Figure 9 As shown in the attached figures, a first support spring 10 is wound around the outside of the connecting rod 9, and a first handle 8 is fixed to the front end of the connecting rod 9, and the first handle 8 is connected to the inside of the PTC ceramic sheet 7 through a mounting slot.

[0056] With the above technical solution, by winding a first support spring 10 around the outside of the connecting rod 9 and fixing a first handle 8 to the front end of the connecting rod 9, it is convenient to disassemble and assemble the PTC ceramic sheet 7.

[0057] As shown in the attached Figure 10As shown in the figure, limiting blocks 13 are installed inside both the upper and lower sides of the maintenance installation plate 12, a second support spring 14 is installed inside the limiting blocks 13, and a second handle 15 is welded to the outside of the limiting blocks 13.

[0058] With the above technical solution, by installing limiting blocks 13 inside both the upper and lower sides of the maintenance installation plate 12, and installing a second support spring 14 inside the limiting blocks 13, it is convenient to disassemble and maintain the maintenance installation plate 12.

[0059] As shown in the attached Figure 2 and attached Figure 11 As shown in the figure, second anti-static ceramic shells 16 are installed on both the upper and lower sides of the first anti-static alumina ceramic shell 4, an aluminum shell 18 is installed inside the second anti-static ceramic shell 16, and an electrostatic conductive coating layer 17 is sprayed on the outside of the aluminum shell 18.

[0060] With the above technical solution, by installing second anti-static ceramic shells 16 on both the upper and lower sides of the first anti-static alumina ceramic shell 4, and installing an aluminum shell 18 inside the second anti-static ceramic shell 16, the anti-static effect is good.

[0061] As shown in the attached Figure 11 As shown in the figure, heat sinks 19 are installed inside the aluminum shell 18, and the heat sinks 19 are arranged at equal intervals.

[0062] With the above technical solution, by installing heat sinks 19 inside the aluminum shell 18, and the heat sinks 19 are arranged at equal intervals, the heat dissipation effect is good. Specific embodiment one;

[0064] The existing technical solution is prone to catching fire due to excessive temperature. To solve this technical problem, in this embodiment, as shown in the attached Figure 1 - attached Figure 4 As shown in the figure, the first anti-static alumina ceramic shell 4, the insulating shell 5, the fire extinguishing airbag 6 and the PTC ceramic sheet 7 are combined to form a safety heating mechanism 3. The side protection plate 1 is connected to the PTC ceramic sheet 7, power is supplied to the PTC ceramic sheet 7 through the side protection plate 1, the PTC ceramic sheet 7 is heated, and heat is dissipated through the heat sinks 19. Fire extinguishing airbags 6 are arranged on both the upper and lower sides of the PTC ceramic sheet 7. When the PTC ceramic sheet 7 catches fire due to a fault, the fire extinguishing airbags 6 automatically burst due to high temperature or fire, the heptafluoropropane gas filled in the fire extinguishing airbags 6 overflows, undergoes thermal decomposition, generates fluorine-containing free radicals, interrupts the combustion chain reaction, reduces the oxygen partial pressure concentration, and extinguishes the flame; Specific embodiment two;

[0066] The existing technical solution is not convenient for disassembling and maintaining the PTC ceramic sheet 7. To solve this technical problem, in this embodiment, as shown in the attached Figure 5 - attached Figure 10As shown in the figure, when the second handle 15 is pressed inward, the second handle 15 drives the limit block 13 fixed at equal intervals at its rear end to move, so that the limit block 13 slides in the maintenance installation plate 12 connected to it by a card slot. The limit block 13 compresses the second support spring 14 installed on its inner side, so that the limit block 13 disengages from the card slot connection with the first anti-static alumina ceramic shell 4, and the maintenance installation plate 12 connected to it by a card slot can be taken out from the first anti-static alumina ceramic shell 4, so that the rubber insulating sheet 11 fixed at the rear side of the maintenance installation plate 12 disengages from the close fit with the PTC ceramic sheet 7, and the first handle 8 disengages from the connection with the rubber insulating sheet 11. The elastic action of the first support spring 10 pushes the first handle 8, so that the connecting rod 9 slides in the PTC ceramic sheet 7 connected to it by a card slot, and the first handle 8 disengages from the card slot connection with the PTC ceramic sheet 7. Then, the first handle 8 can be pulled outwards, so that the PTC ceramic sheet 7 disengages from the card slot connection with the first anti-static alumina ceramic shell 4, and the PTC ceramic sheet 7 can be maintained;

[0067] After the maintenance is completed, the PTC ceramic sheet 7 is reinserted into the first anti-static alumina ceramic shell 4, and the first handle 8 is pushed, so that the first handle 8 is connected to the PTC ceramic sheet 7 by a card slot. The connecting rod 9 fixed at the rear side of the first handle 8 drives the first support spring 10 to stretch. Then, the second handle 15 is pressed, and the limit block 13 compresses the second support spring 14. The maintenance installation plate 12 is placed into the first anti-static alumina ceramic shell 4, so that the maintenance installation plate 12 is connected to the first anti-static alumina ceramic shell 4 by a card slot. The second handle 15 is released, and the elastic action of the second support spring 14 pushes the limit block 13 to reset, so that the limit block 13 is connected to the first anti-static alumina ceramic shell 4 by a card slot, and the maintenance installation plate 12 is fixed in the first anti-static alumina ceramic shell 4; Specific Embodiment Three;

[0069] The existing technical solutions are not convenient for avoiding the influence of static electricity on hardware. To solve this technical problem, in this embodiment, as shown in the attached Figure 2 、attached Figure 3 、attached Figure 4 and attached Figure 11 , an insulating shell 5 is installed on the outer side of the fire extinguishing airbag 6, and the first anti-static alumina ceramic shell 4 is installed on the outer side of the insulating shell 5 to prevent the PTC ceramic sheet 7 from being affected by static electricity. An aluminum shell 18 is installed on the outer side of the heat sink 19, and an electrostatic conductive coating layer 17 is sprayed on the outer side of the aluminum shell 18. A second anti-static ceramic shell 16 is installed on the outer side of the aluminum shell 18 to prevent the heat sink 19 from being affected by static electricity.

[0070] This is the entire working process of the anti-static PTC heater. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0071] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the descriptions in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0072] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An anti-static PTC heater, comprising: Side protection plates (1), the side protection plates (1) are symmetrically distributed on the left and right, and a top protection plate (20) is symmetrically fixed on the inner side of the side protection plates (1) in an upper and lower manner; It is characterized by further comprising: A safety heating mechanism (3), the safety heating mechanism (3) being installed on the inner side of the side protection plate (1), the safety heating mechanism (3) being composed of a first antistatic alumina ceramic shell (4), an insulating shell (5), a fire extinguishing airbag (6) and a PTC ceramic sheet (7), the fire extinguishing airbag (6) being distributed at equal intervals in the insulating shell (5), and the fire extinguishing airbag (6) being symmetrically arranged up and down; An adjustment mechanism, the adjustment mechanism comprising a first handle (8), a connecting rod (9) and a first supporting spring (10), wherein the connecting rod (9) is slidably connected in the PTC ceramic sheet (7) via the first supporting spring (10); A mounting mechanism, the mounting mechanism comprising an inspection mounting plate (12), a limit block (13), a second support spring (14) and a second handle (15), the limit blocks (13) being distributed at equal intervals on the second handle (15), and the limit blocks (13) being slidably connected in the inspection mounting plate (12) via the second support spring (14); The heat dissipation mechanism comprises a second antistatic ceramic shell (16), a static conductive coating layer (17), an aluminum shell (18) and heat sinks (19), wherein the heat sinks (19) are arranged at equal intervals in the aluminum shell (18).

2. The antistatic PTC heater according to claim 1, characterized in that: A conductive cable (2) is installed inside the side protection plate (1), and the conductive cable (2) is connected to a PTC ceramic sheet (7).

3. The antistatic PTC heater according to claim 1, characterized in that: A first antistatic alumina ceramic shell (4) is installed in the middle of the inner side of the side protection plate (1), and an insulating shell (5) is fixed on the inner side of the first antistatic alumina ceramic shell (4), and a fire extinguishing airbag (6) is installed on the inner side of the insulating shell (5), and the fire extinguishing airbag (6) is filled with heptafluoropropane gas.

4. The anti-static PTC heater according to claim 3, characterized in that: A PTC ceramic sheet (7) is arranged on the inner side of the fire extinguishing airbag (6), and a connecting rod (9) is connected to the mounting slot inside the front of the PTC ceramic sheet (7), wherein the cross section of the connecting rod (9) is in a "T"-shaped structure.

5. The antistatic PTC heater according to claim 4, characterized in that: The front side of the PTC ceramic sheet (7) is tightly fitted with a rubber insulating sheet (11), and the front side of the rubber insulating sheet (11) is fixed with a maintenance installation plate (12), and the maintenance installation plate (12) is connected to the first antistatic alumina ceramic housing (4) through a slot.

6. The antistatic PTC heater according to claim 4, characterized in that: A first supporting spring (10) is wound around the outside of the connecting rod (9), a first handle (8) is fixed to the front end of the connecting rod (9), and the first handle (8) is slotted and connected in the PTC ceramic sheet (7).

7. The antistatic PTC heater according to claim 5, characterized in that: Limit blocks (13) are installed inside the upper and lower sides of the inspection and installation plate (12), and a second supporting spring (14) is installed inside the limit block (13), and a second handle (15) is welded on the outside of the limit block (13).

8. The anti-static PTC heater according to claim 3, characterized in that: A second antistatic ceramic shell (16) is installed on both upper and lower sides of the first antistatic alumina ceramic shell (4), and an aluminum shell (18) is installed inside the second antistatic ceramic shell (16), and an electrostatic conductive coating layer (17) is sprayed on the outer side of the aluminum shell (18).

9. The antistatic PTC heater according to claim 8, characterized in that: Heat sinks (19) are installed inside the aluminum housing (18), and the heat sinks (19) are arranged at equal intervals.

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