PTC electric heater convenient to disassemble

Abstract

The application relates to the technical field of heating equipment, in particular to a PTC electric heater convenient to disassemble and assemble, which comprises an electric heater body and a heating assembly, a heating cavity is arranged in the electric heater body, a mounting assembly is arranged on the bottom wall of the heating cavity, the mounting assembly comprises a supporting plate, a driving rod and a resisting plate, the supporting plate and the resisting plate are respectively arranged at two ends of the heating cavity, the supporting plate is rotationally arranged on the bottom wall of the heating cavity, the driving rod is fixedly connected with the supporting plate, a plug piece is arranged on the bottom wall of the heating cavity, when the heating assembly is mounted, the end of the heating assembly is placed on the supporting plate, the driving rod is rotated to drive the supporting plate to move downward with the heating assembly, and the heating assembly is automatically electrically connected with the plug piece; when the heating assembly is dismounted, the driving rod is rotated to drive the supporting plate to rotate upward, the supporting plate lifts the heating assembly to disconnect the heating assembly from the plug piece, then the heating assembly is taken off, and the whole process is that the mounting assembly is in the state of being disconnected from the plug piece, the hot plug effect of the heating assembly is realized, and the safety of the device is effectively improved.

Description

Technical Field

[0001] This application relates to the field of heating equipment technology, and more specifically, to a PTC electric heater that is easy to install and remove. Background Technology

[0002] The content in this section provides only background information related to this application and may not constitute prior art.

[0003] A PTC electric heater is a household appliance that uses a PTC thermistor as its heating element. When current passes through the PTC element, its resistance is low at lower temperatures, resulting in a larger current and generating more heat, causing the temperature to rise rapidly. As the temperature increases, the resistance of the PTC element increases sharply, thus limiting further increases in current and achieving an automatic constant-temperature heating effect.

[0004] In related technologies, PTC electric heaters typically have multiple heating elements connected in parallel. The ends of the heating elements are fixedly connected to the power supply connector in the electric heater. When a heating element malfunctions, it is often necessary to disconnect the electric heater from the power supply, and then remove and replace the heating element. The disassembly and assembly process is quite cumbersome, and if the electric heater is not disconnected from the power supply, there is a risk of electric shock, resulting in low safety. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a PTC electric heater that is easy to disassemble and assemble, so as to make the disassembly and assembly process more convenient and safe.

[0006] The objective of this application is achieved through the following technical solution:

[0007] A quick-assembly and disassembly PTC electric heater includes a heater body and a heating component. The heater body has a heating cavity, and the heating component is detachably disposed in the heating cavity. The bottom wall of the heating cavity is provided with a mounting component for mounting the heating component.

[0008] The mounting assembly includes a support plate, a drive rod, and a backing plate. The support plate and the backing plate are located at opposite ends of the heating cavity. The support plate is rotatably mounted on the bottom wall of the heating cavity along the width direction of the heating cavity, and the axis of rotation is parallel to the bottom wall of the heating cavity. The drive rod is fixedly connected to the support plate to drive the support plate to rotate.

[0009] The bottom wall of the heating chamber is provided with two sets of plugs for power supply. When the heating component is installed in the mounting assembly, the positive and negative poles of the heating component are electrically connected to the two sets of plugs respectively.

[0010] In some embodiments, the installation component further includes:

[0011] A linkage rod, one end of which is rotatably connected to the movable end of the pallet and is parallel to the rotation axis of the pallet;

[0012] A linkage block is slidably disposed on the bottom wall of the heating cavity along the length direction of the heating cavity and rotatably connected to the end of the linkage rod away from the support plate. The rotation axis of the linkage block is parallel to the rotation axis of the support plate.

[0013] A first elastic element is disposed between the linkage block and the bottom wall of the heating chamber, for driving the linkage block to slide.

[0014] In some embodiments, the installation component further includes:

[0015] A pressure plate, rotatably disposed at the end of the drive rod away from the support plate, is used to contact the heating assembly;

[0016] A second elastic element is disposed between the pressure plate and the drive rod, for driving the pressure plate to rotate toward the side closer to the support plate.

[0017] In some embodiments, a mounting groove is provided on the bottom wall of the heating chamber, and the mounting assembly is disposed in the mounting groove. When the support plate is located in the mounting groove, the top surface of the support plate and the bottom wall of the heating chamber are on the same plane.

[0018] In some embodiments, it also includes:

[0019] A positioning plate is provided around the mounting assembly, and the positioning plate has a positioning groove adapted to the heating assembly.

[0020] A sealing shell, detachably mounted on the positioning plate, is used to seal and cover the end of the heating assembly.

[0021] In some embodiments, the heating assembly includes:

[0022] A heating element includes a hollow outer shell and a heating plate disposed within the outer shell. The heating plate includes a chip and two electrode plates. The chip is fixedly disposed between the two electrode plates. An insulating layer is filled between the outer shell, the electrode plates, and the chip.

[0023] The heat dissipation component is fixedly mounted on the outer wall of the housing.

[0024] An insulating end is provided at one end of the heating element. On the side of the insulating end away from the heating element, there are two electrode plates for electrical connection with the two sets of plug components. The two electrode plates are electrically connected to the two electrode plates respectively.

[0025] In some embodiments, the heat sink is provided in two sets, and the two sets of heat sinks are symmetrically arranged on both sides of the heating element.

[0026] In some embodiments, the heat sink includes multiple sets of corrugated heat sink fins. The technical solution of this application embodiment has at least the following advantages and beneficial effects:

[0027] This application discloses a PTC electric heater that is easy to install and remove. When installing the heating element, a drive rod rotates a support plate until one end is raised. One end of the heating element then abuts against a backing plate, and the other end is placed on the support plate. Rotating the drive rod causes the support plate to move the heating element downwards, rotating the support plate until it is parallel to the bottom wall of the heating chamber. The drive rod and backing plate then clamp the heating element in the middle. During this movement, the heating element automatically connects to the plug, completing the installation process. When removing the heating element, rotating the drive rod causes the support plate to rotate upwards. The movable end of the support plate lifts one end of the heating element, disconnecting it from the plug. The raised heating element can then be removed, completing the removal process. Throughout the entire process, no manual disassembly or reassembly of the power supply connection to the heating element is required during installation, making the process more convenient. Furthermore, when placing and removing the heating element, the component is disconnected from the plug, achieving a hot-swappable effect and effectively improving the safety of the entire process. Attached Figure Description

[0028] Figure 1 Appearance drawings of an electric heater provided for some embodiments of this application;

[0029] Figure 2 Exploded cross-sectional views of an electric heater provided for some embodiments of this application;

[0030] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0031] Figure 4 for Figure 3 A diagram showing the components being removed from the installation.

[0032] Figure 5 A schematic diagram of a heating assembly provided for some embodiments of this application;

[0033] Figure 6 Cross-sectional views of heating components provided for some embodiments of this application.

[0034] Icons: 1. Electric heater body; 11. Heating chamber; 12. Air outlet; 2. Mounting components; 21. Support plate; 22. Drive rod; 23. Support plate; 24. Linking rod; 241. Linking block; 242. First elastic element; 25. Pressure plate; 251. Second elastic element; 26. Mounting groove; 27. Positioning plate; 271. Positioning groove; 272. Sealing shell; 3. Heating components; 31. Heating element; 311. Outer shell; 312. Chip; 313. Electrode plate; 314. Insulation layer; 32. Heat sink; 33. Insulating end; 331. Electrode piece; 4. Plug. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments. The same reference numerals in the accompanying drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0036] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of this application may have fewer components, other components not shown in the drawings, different components, differently arranged components, or components with different connections, etc. Furthermore, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0037] A PTC electric heater is a household appliance that uses a PTC thermistor as its heating element. When current passes through the PTC element, its resistance is low at lower temperatures, resulting in a larger current and generating more heat, causing the temperature to rise rapidly. As the temperature increases, the resistance of the PTC element increases sharply, thus limiting further increases in current and achieving an automatic constant-temperature heating effect.

[0038] In related technologies, PTC electric heaters typically have multiple heating elements connected in parallel. These heating elements are usually fixedly connected side-by-side as a single unit. One end of each heating element has positive and negative terminals. During installation, the positive and negative terminals are fixedly connected to the positive and negative terminals inside the heater using bolts or other methods. When one of the heating elements malfunctions, it is often necessary to remove the entire heating element, replace the faulty one, and then reinstall it. The entire disassembly and reassembly process requires the heater to be powered off, making the process cumbersome. Furthermore, when the heater is powered on, disconnecting the positive and negative terminals can easily result in electric shock, posing a low safety risk.

[0039] This application provides a quick-assembly and disassembly PTC electric heater, referring to... Figure 1 and Figure 2 The device includes a main body 1 and heating elements 3. The main body 1 has a rectangular heating cavity 11. The heating elements 3 are detachably arranged side-by-side within the heating cavity 11. There may be one or more sets of heating elements 3, depending on the power of the heater and the heating elements 3. The heating elements 3 are arranged along the length of the main body 1. A mounting assembly 2 for installing the heating elements 3 is provided on the bottom wall of the heating cavity 11. The heating elements 3 are fixedly installed in the heating cavity 11 via the mounting assembly 2. An air outlet 12 is located on the top of the main body 1. A detachable air outlet plate is installed inside the air outlet 12. Multiple strip-shaped air holes are formed on the air outlet plate along its width. A detachable filter is installed on the air outlet plate and connected to the air outlet plate via clips. Users can periodically remove the filter for cleaning to prevent dust from clogging the air outlet 12 and maintain long-term efficient heat dissipation. An air supply assembly for blowing air into the heating cavity 11 is provided on one side wall of the heating cavity 11, used to blow heated air out through the air outlet 12.

[0040] Reference Figures 1 to 4 As shown, the mounting assembly 2 includes a support plate 21, a drive rod 22, and a stop plate 23. The support plate 21 and the stop plate 23 are located on both sides of the heating chamber 11. The support plate 21 is used to contact one end of the heating assembly 3, and the stop plate 23 is used to contact the other end of the heating assembly 3. Specifically, when the heating assembly 3 is installed between the mounting assemblies 2, the heating assembly 3 is located on the support plate 21 and is held by the drive rod 22 and the stop plate 23. The support plate 21 is rotatably mounted on the bottom wall of the heating chamber 11 along the width direction, and the axis of rotation is parallel to the bottom wall of the heating chamber 11. The drive rod 22 is fixedly connected to the support plate 21 in a direction perpendicular to the support plate 21 and is used to drive the support plate 21 to rotate. Two sets of plugs 4 for power supply are provided on the bottom wall of the heating chamber 11. When the heating assembly 3 is installed between the drive rod 22 and the stop plate 23, the positive and negative poles of the heating assembly 3 are electrically connected to the two sets of plugs 4 respectively.

[0041] Reference Figure 2 and Figure 3The installation space is formed between the tray 21 at one end and the abutment 23 at the other end. The heating component 3 is located in the installation space, with one end of the heating component 3 on the tray 21 and the other end on the abutment 23. The top surface of the tray 21 is used to place the heating component 3. The tray 21 is rotatably mounted on one side of the plug 4, with the rotating shaft end of the tray 21 located near the plug 4 and the movable end located away from the plug 4. Two drive rods 22 are provided, which are vertically mounted on both sides of the top wall of the tray 21 and located on the rotation axis of the tray 21. The tray 21 has two position states: the installation state and the removal state. When the tray 21 is in the installation state, the tray 21 is in a horizontal state. When the tray 21 is in the removal state, the drive rods 22 rotate upward to both sides of the plug 4 to expose the plug 4.

[0042] In use, first rotate the tray 21 to the take-out position, place one end of the heating component 3 against the abutment plate 23, and place the other end on the tray 21. Rotate the drive rod 22 to make the tray 21 move the heating component 3 downwards, rotating the tray 21 until it is parallel to the bottom wall of the heating chamber 11, and the drive rod 22 and the abutment plate 23 clamp the heating component 3 in the middle. During installation, the positive and negative poles of the heating component 3 automatically connect to the plug 4 until the tray 21 rotates to the installation position, that is, the heating component 3 is located on the horizontal tray 21. When taking out the heating component 3, drive the drive rod 22 to rotate, causing the tray 21 to rotate upwards. The tray 21 lifts the heating component 3 upwards until the heating component 3 leaves the plug 4. Throughout the process, there is no need for manual disassembly and assembly of the power supply connection of the heating component 3, making the disassembly and assembly process more convenient. At the same time, when placing and taking out the heating component 3, the installation component 2 is in a state of disconnection from the plug 4, realizing the hot-swappable effect of the heating component 3 and effectively improving the safety of the whole process.

[0043] In some embodiments, refer to Figure 3 and Figure 4 The mounting assembly 2 also includes a linkage 24, one end of which is rotatably connected to the movable end of the support plate 21, and the rotation axis of the linkage 24 is parallel to the rotation axis of the support plate 21; a linkage block 241, which is slidably disposed on the bottom wall of the heating chamber 11 along the length of the electric heater body 1, and is rotatably connected to the end of the linkage 24 away from the support plate 21, and the rotation axis of the linkage block 241 is parallel to the rotation axis of the support plate 21; and a first elastic element 242, which is disposed between the linkage block 241 and the bottom wall of the heating chamber 11, for driving the linkage block 241 to slide.

[0044] In this embodiment, the first elastic element 242 can be a spring, with one end fixedly connected to the bottom wall of the heating chamber 11 and the other end abutting against the side wall of the connecting block 241 away from the support plate 21. Two connecting rods 24 are provided, respectively located on both sides of the movable end of the support plate 21. During the sliding process of the connecting block 241, the rotation axis between the connecting rod 24 and the connecting block 241 is always on the same horizontal plane as the rotation axis of the support plate 21. When the support plate 21 is in the installed state, the connecting block 241, the connecting rod 24, and the support plate 21 are all on the same horizontal plane, the first elastic element 242 is compressed, and the entire device is in a stable state. When the support plate 21 rotates upwards, the connecting block 241, the connecting rod 24, and the support plate 21 are... On different planes, the first elastic element 242 drives the connecting block 241 to slide towards the side closer to the tray 21, thereby further driving the tray 21 to rotate upward through the connecting rod 24. Therefore, as long as the tray 21 is rotated upward by a small angle through the driving rod 22, the tray 21 can automatically spring upward under the action of the first elastic element 242, making the process of removing the heating component 3 more convenient. At the same time, in the installation state, the elastic force of the first elastic element 242 restricts the rotation of the tray 21 in the direction of the torque, improving the stability of the entire device in the installation state.

[0045] In some embodiments, refer to Figure 3 and Figure 4 The mounting assembly 2 also includes a pressure plate 25, which is rotatably disposed at the end of the drive rod 22 away from the support plate 21 for contacting the heating assembly 3; and a second elastic member 251, disposed between the pressure plate 25 and the drive rod 22 for driving the pressure plate 25 to rotate toward the side closer to the support plate 21.

[0046] In this embodiment, the second elastic element 251 can be a torsion spring. One end of the second elastic element 251 is fixedly connected to the pressure plate 25, and the other end is fixedly connected to the drive rod 22. The pressure plate 25 has a clearance notch on the side near the drive rod 22, so that a clearance opening is formed between the pressure plate 25, the connecting rod 24, and the support plate 21 for the heating assembly 3 to pass through. When the support plate 21 is in the removed state, from a top view, the clearance opening exposes the plug 4, so that the heating assembly 3 can be smoothly installed onto the support plate 21. The distance between the pressure plate 25 and the support plate 21, i.e. the length of the drive rod 22, is adapted to the thickness of the heating component 3. When the heating component 3 is located on the support plate 21, the second elastic element 251 drives the pressure plate 25 to rotate towards the side closer to the support plate 21, so that the pressure plate 25 and the support plate 21 clamp the heating component 3 in the middle, thereby improving the stability of the entire device. When it is necessary to remove the heating component 3, simply flip the pressure plate 25 to drive the drive rod 22 to rotate upward, and the support plate 21 will be flipped upward and moved to the removal state.

[0047] In some embodiments, an installation groove 26 is provided on the bottom of the electric heater body 1. The installation groove 26 is located on the bottom wall of the heating cavity 11 and close to one side wall. The installation component 2 is disposed in the installation groove 26. When the support plate 21 is located in the installation groove 26, the top surface of the support plate 21 and the surrounding plane of the location of the installation groove 26 are on the same plane. That is, when the support plate 21 is in a horizontal state, the top surface of the support plate 21 and the surrounding plane form a whole plane to support the heating component 3, making the whole structure more reasonable and improving the stability of the heating component 3 after installation.

[0048] In some embodiments, refer to Figure 3 and Figure 4 The electric heater also includes a positioning plate 27, which surrounds the mounting component 2. The positioning plate 27 has a positioning groove 271 adapted to the heating component 3. A sealing shell 272 is detachably mounted on the positioning plate 27 to seal and cover the end of the heating component 3. The positioning groove 271 faces the installation direction of the heating component 3 and is adapted to the width of the heating component 3, thus playing a positioning role during installation. During installation, simply align the heating component 3 with the positioning groove 271 and press it down to automatically connect the heating component 3 to the plug 4, eliminating the need for manual power connection. When the sealing shell 272 is installed on the positioning plate 27, the heating component 3 fits tightly against the side wall of the positioning groove 271, forming a sealed cavity between the sealing shell 272 and the positioning plate 27. This completely seals the power supply of the heating component 3, effectively preventing external water or other substances from entering and causing a short circuit between the heating component 3 and the plug 4, thus improving the safety of the entire device.

[0049] In some embodiments, refer to Figure 5 and Figure 6 The heating component 3 includes a heating element 31, which includes a hollow outer shell 311 and a heating plate disposed inside the outer shell 311. The heating plate includes a chip 312 and two electrode plates 313. The chip 312 is fixedly disposed between the two electrode plates 313. An insulating layer 314 is filled between the outer shell 311, the electrode plates 313, and the chip 312. A heat sink 32 is fixedly disposed on the outer wall of the outer shell 311. An insulating end 33 is disposed at one end of the heating element 31. Two electrode plates 331 for electrical connection with two sets of plug components 4 are disposed on the side of the insulating end 33 away from the heating element 31. The two electrode plates 331 are electrically connected to the two electrode plates 313 respectively.

[0050] The outer casing 311 can be a hollow metal casing made of aluminum. An insulating layer 314 is provided on the inner wall of the outer casing 311. The chip 312 and two electrode plates 313 are all located inside the insulating layer 314. The chip 312 can be a PTC thermistor chip. After the two electrode plates 313 are powered on, it will automatically heat up. When the temperature rises to a certain level (Curie temperature), its resistance will increase significantly, thereby limiting the current and reducing the heat generation, thus achieving automatic constant temperature heating.

[0051] In some embodiments, the insulating layer 314 is a composite coating of nano-ceramic graphene material. TL 2301 high-temperature resistant insulating and heat-dissipating coating material can be used to form the insulating layer. This is a single-component nano-ceramic graphene composite coating material with excellent high-temperature resistance, fire resistance, flame retardancy, insulation, and thermal conductivity. It can be applied to the surface treatment of metal substrates (steel, copper, aluminum alloy, titanium alloy) and non-metal substrates (graphite, carbon-carbon, carbon fiber, glass fiber, ceramic), and forms a continuous, hard, high-temperature resistant, insulating, and thermally conductive coating after baking and curing at temperatures above 200°C.

[0052] In other embodiments, polyimide film can also be selected as the material of the insulating layer 314. It has excellent high and low temperature resistance, excellent mechanical and insulation properties, chemical stability, and resistance to damp heat and radiation. The nitrogen content in the molecular structure of polyimide film is more than 7%, and it has self-extinguishing properties when burning. It is a high-quality flame-retardant insulating film. By setting the insulating layer 314 of special material, the thermal conductivity of the chip 312 and the insulating film is effectively improved, thereby effectively improving the steady-state power of the entire heating component 3.

[0053] The following are the experimental data of heating component 3 in a 20-square-meter room at an ambient temperature of 8-10℃, placed inside a housing 311 with a length of 1000mm, a width of 165mm, and a height of 300mm:

[0054]

[0055] Therefore, it can be concluded that the steady-state power improvement effect is best when the thickness of the insulating layer 314 is 20μm. Therefore, in this embodiment, the thickness of the insulating layer 314 can be set to 20μm.

[0056] In this embodiment, refer to Figure 5 and Figure 6 The heat sink 32 can be a heat dissipation corrugated fin. Each heat sink 32 includes multiple sets of corrugated heat sinks. There are two sets of heat sinks 32, which are symmetrically arranged on both sides of the heating element 31. Specifically, the heating component 3 consists of an 805mm long heating plate and three sets of heat dissipation corrugated fins on each side, thereby effectively improving the heat dissipation effect.

[0057] When installing the heating component 3, the drive rod 22 rotates the tray 21 until one end is tilted upwards. Then, one end of the heating component 3 abuts against the abutment plate 23, and the other end is placed on the tray 21. The drive rod 22 is rotated to make the tray 21 move the heating component 3 downwards, rotating the tray 21 until it is parallel to the bottom wall of the heating chamber 11, and the drive rod 22 and the abutment plate 23 clamp the heating component 3 in the middle. When the tray 21 is in the installed state, the connecting block 241, the connecting rod 24, and the tray 21 are all on the same horizontal plane, the first elastic element 242 is compressed, and the entire device is in a stable state. When it is necessary to remove the heating component 3, the pressure plate 25 is flipped to drive the drive rod 22 to rotate upwards. The connecting block 241, the connecting rod 24, and the tray 21 are on different planes, and the first elastic element 242 drives the connecting block 241 to move closer to the tray. The slide of one side of 21 further drives the tray 21 to rotate upward through the linkage 24. Therefore, as long as the tray 21 is rotated upward by a small angle through the drive rod 22, the tray 21 can automatically spring upward under the action of the first elastic element 242. The tray 21 lifts the heating component 3 upward until the heating component 3 leaves the plug 4. During the whole process, there is no need to manually disassemble or assemble the power supply connection of the heating component 3, making the disassembly and assembly process more convenient. At the same time, when placing and removing the heating component 3, the installation component 2 is in a state of disconnection from the plug 4, realizing the hot-plug effect of the heating component 3, which effectively improves the safety of the whole process. At the same time, in the installation state, the elastic force of the first elastic element 242 restricts the rotation of the tray 21 in the direction of torque, improving the stability of the entire device in the installation state.

[0058] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A PTC electric heater that is easy to assemble and disassemble, characterized in that, The device includes an electric heater body (1) and a heating component (3). The electric heater body (1) has a heating cavity (11) inside. The heating component (3) is detachably disposed in the heating cavity (11). The bottom wall of the heating cavity (11) is provided with a mounting component (2) for mounting the heating component (3). The mounting assembly (2) includes a support plate (21), a drive rod (22), and a stop plate (23). The support plate (21) and the stop plate (23) are located on both sides of the heating cavity (11). The support plate (21) is rotatably mounted on the bottom wall of the heating cavity (11) along the width direction of the heating cavity (11), and the axis of rotation is parallel to the bottom wall of the heating cavity (11). The drive rod (22) is fixedly connected to the support plate (21) in a direction perpendicular to the support plate (21) and is used to drive the support plate (21) to rotate. Two sets of plugs (4) for power supply are provided on the bottom wall of the heating chamber (11). When the heating component (3) is installed between the drive rod (22) and the abutment (23), the positive and negative poles of the heating component (3) are electrically connected to the two sets of plugs (4) respectively.

2. The easily detachable PTC electric heater according to claim 1, characterized in that, The installation component (2) also includes: Linkage rod (24), one end of which is rotatably connected to the movable end of the support plate (21); Linking block (241) is slidably disposed on the bottom wall of the heating cavity (11) along the length direction of the heating cavity (11) and rotatably connected to the end of the linking rod (24) away from the support plate (21). The rotation axis of the linking block (241) is parallel to the rotation axis of the support plate (21). A first elastic element (242) is disposed between the linkage block (241) and the bottom wall of the heating chamber (11) for driving the linkage block (241) to slide.

3. The easily detachable PTC electric heater according to claim 2, characterized in that, The installation component (2) also includes: A pressure plate (25) is rotatably disposed at one end of the drive rod (22) away from the support plate (21); A second elastic element (251) is disposed between the pressure plate (25) and the drive rod (22) for driving the pressure plate (25) to rotate toward the side closer to the support plate (21).

4. The easily detachable PTC electric heater according to claim 1, characterized in that, The bottom wall of the heating chamber (11) is provided with an installation groove (26), and the installation component (2) is set in the installation groove (26). When the support plate (21) is located in the installation groove (26), the top surface of the support plate (21) and the bottom wall of the heating chamber (11) are on the same plane.

5. The easily detachable PTC electric heater according to claim 1, characterized in that, Also includes: Positioning plate (27), which surrounds the mounting assembly (2), and the positioning plate (27) has a positioning groove (271) adapted to the heating assembly (3); A sealing shell (272) is detachably mounted on the positioning plate (27) for sealing and covering the end of the heating assembly (3).

6. The easily detachable PTC electric heater according to claim 1, characterized in that, The heating component (3) includes: The heating element (31) includes a hollow outer shell (311) and a heating plate disposed inside the outer shell (311). The heating plate includes a chip (312) and two electrode plates (313). The chip (312) is fixedly disposed between the two electrode plates (313). An insulating layer (314) is filled between the outer shell (311), the electrode plates (313), and the chip (312). A heat sink (32) is fixedly mounted on the outer wall of the outer casing (311); An insulating end (33) is provided at one end of the heating element (31). Two electrode plates (331) for electrical connection with the two sets of plugs (4) are provided on the side of the insulating end (33) away from the heating element (31). The two electrode plates (331) are electrically connected to the two electrode plates (313) respectively.

7. The easily detachable PTC electric heater according to claim 6, characterized in that, The heat sink (32) is provided in two sets, and the two sets of heat sink (32) are symmetrically arranged on both sides of the heating element (31).

8. The easily detachable PTC electric heater according to claim 6, characterized in that, The heat sink (32) includes multiple sets of corrugated heat sinks.

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