PTC heater capable of reducing switching loss

Abstract

The utility model discloses a PTC heater capable of reducing switching loss. The PTC heater comprises a bottom frame; the dust removal device further comprises a clamping plate, a dust removal mechanism is arranged on the upper side of the clamping plate, the dust removal mechanism comprises limiting rods, lug plates and a connecting frame, the limiting rods are slidably connected with the lug plates, and the lug plates are distributed in an array mode; a heat dissipation mechanism is arranged on the upper side of the connecting frame, the heat dissipation mechanism comprises a ventilation fan, a circular ring and a filter screen, the circular ring is connected with the filter screen in a clamped mode, and the circular ring is arranged on the upper side of the ventilation fan. According to the PTC heater capable of reducing the switching loss, the PTC heater body is arranged among the bottom frame, the trapezoidal block and the clamping plate, the PTC heater body is convenient to disassemble by the mounting box, and the inner side of the PTC heater body can be cleaned by the cleaning piece, so that the influence of dust on the PTC heater body is reduced, the loss is further reduced, and the service life of the PTC heater is prolonged. And the ventilation fan can accelerate the circulation of air near the PTC heater body, so that the loss is further reduced.

Description

Technical Field

[0001] This utility model relates to the field of heater technology, specifically a PTC heater that can reduce transfer losses. Background Technology

[0002] A PTC heater is a type of heater, which is an electrical appliance that uses electrical energy to achieve a heating effect. Its core principle is energy conversion, that is, converting electrical energy into heat energy. The working principle of a PTC heater is based on the positive temperature coefficient characteristic of PTC material. When electricity is applied, the PTC material generates heat, which raises the temperature of the surrounding environment. As the temperature rises, the resistance of the PTC material increases sharply, thereby limiting the flow of current and achieving a self-stabilizing state. This characteristic allows the PTC heater to automatically adjust the power during the heating process and maintain a stable heating temperature.

[0003] Referring to Chinese Patent Publication No. CN221886743U, with the publication date of October 22, 2024, a combined PTC heater is disclosed. This utility model provides a connecting plate on the end of the heater body away from the heating element, and then fixes the wiring terminal of the heater body to the connecting plate of another heater body. At the same time, fixing slots and fixing plates are fixed on both sides of the heater body, so that the fixing plates can be inserted and locked in the fixing slots. This makes the assembly of the PTC heater more convenient and solves the problem that when a large PTC heater is needed, multiple PTC heaters need to be fixed one by one, which makes the installation and fixing of PTC heaters more troublesome and cumbersome.

[0004] However, during use, the heater is prone to dust accumulation, which can reduce the loss of the connection. In addition, poor heat dissipation can further reduce the loss of the connection. Therefore, there is still room for improvement.

[0005] Therefore, we propose a PTC heater that can reduce transfer losses in order to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to provide a PTC heater that can reduce transfer losses, in order to solve the problems mentioned in the background art. In the current invention, the heater is prone to dust accumulation during use, which leads to reduced transfer losses. In addition, poor heat dissipation will further reduce transfer losses, so there is still room for further improvement.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a PTC heater capable of reducing transfer losses, comprising: a base frame;

[0008] Also includes:

[0009] A clamping plate, wherein a dust removal mechanism is provided on the upper side of the clamping plate, the dust removal mechanism includes a limiting rod, an ear plate and a connecting frame, the limiting rod is slidably connected to the ear plate and the ear plates are arranged in an array;

[0010] A heat dissipation mechanism is provided on the upper side of the connecting frame. The heat dissipation mechanism includes an exhaust fan, a ring, and a filter screen. The ring is snapped together with the filter screen and is located on the upper side of the exhaust fan.

[0011] Preferably, a reset spring is provided on the inner side of the bottom frame, and the reset springs are distributed in an array.

[0012] Preferably, the reset spring is fixedly connected to the trapezoidal block, and the reset spring and the trapezoidal block correspond one-to-one, and the trapezoidal block is tightly fitted to the PTC heater body.

[0013] Preferably, the right side of the bottom frame is rotatably connected to the right side of the clamping plate, and the left side of the bottom frame and the left side of the clamping plate are both threadedly connected to the connecting bolts.

[0014] Preferably, the upper side of the bottom frame is provided with limiting rods, and the limiting rods are distributed in an array, with each limiting rod corresponding to a different ear plate.

[0015] Preferably, the ear plate is fixedly connected to the connecting frame, the connecting frame is threadedly connected to the threaded rod, and the threaded rod is rotatably connected to the clamping plate.

[0016] Preferably, a cleaning component is provided inside the connecting frame, and the cleaning component is slidably connected to the PTC heater body, and an exhaust fan is provided on the upper side of the connecting frame.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the PTC heater that can reduce transfer loss has the PTC heater body set in the middle of the bottom frame, trapezoidal block and clamping plate, which facilitates the installation box to disassemble the PTC heater body. The cleaning component can clean the inside of the PTC heater body, thereby reducing the impact of dust on the PTC heater body and thus reducing loss. The ventilation fan can accelerate the air circulation near the PTC heater body, thereby further reducing loss.

[0018] 1. It is equipped with a reset spring, a trapezoidal block, and a clamping plate. The PTC heater body is located in the middle of the bottom frame, the trapezoidal block, and the clamping plate, which facilitates the installation and disassembly of the PTC heater body, making it convenient to use.

[0019] 2. A limit rod, ear plate and connecting frame are provided. The cleaning part is slidably connected to the PTC heater body. When the cleaning part moves down, it will clean the inside of the PTC heater body, thereby reducing the impact of dust on the PTC heater body and thus facilitating the reduction of wear.

[0020] 3. It is equipped with an exhaust fan, a circular ring, and a filter. The exhaust fan can accelerate the air circulation near the PTC heater body, and the filter inside the circular ring can also filter the delivered air, thereby further reducing losses. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the exploded structure of this utility model;

[0022] Figure 2 This is a top view of the structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the connection structure of the bottom frame, PTC heater body and clamping plate of this utility model;

[0024] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0025] Figure 5 This is a schematic diagram of the connection structure between the PTC heater body and the cleaning component of this utility model.

[0026] In the diagram: 1. Base frame; 2. Reset spring; 3. Trapezoidal block; 4. PTC heater body; 5. Clamping plate; 6. Connecting bolt; 7. Limiting rod; 8. Ear plate; 9. Connecting frame; 10. Threaded rod; 11. Cleaning component; 12. Exhaust fan; 13. Ring; 14. Filter screen. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Specific Implementation Example 1

[0029] This embodiment is a PTC heater that can reduce transfer losses.

[0030] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, a reset spring 2 is provided on the inner side of the bottom frame 1. The reset springs 2 are arranged in an array. The reset springs 2 are fixedly connected to the trapezoidal blocks 3. The reset springs 2 and the trapezoidal blocks 3 correspond one-to-one. The trapezoidal blocks 3 are tightly fitted to the PTC heater body 4. The right side of the bottom frame 1 is rotatably connected to the right side of the clamping plate 5. The left side of the bottom frame 1 and the left side of the clamping plate 5 are both threadedly connected to the connecting bolts 6.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a limiting rod 7 is provided on the upper side of the bottom frame 1. The limiting rods 7 are arranged in an array. The limiting rods 7 are slidably connected to the ear plates 8. The ear plates 8 are arranged in an array. The limiting rods 7 and ear plates 8 correspond one-to-one. The ear plates 8 are fixedly connected to the connecting frame 9. The connecting frame 9 is threadedly connected to the threaded rod 10. The threaded rod 10 is rotatably connected to the clamping plate 5. A cleaning component 11 is provided inside the connecting frame 9. The cleaning component 11 is slidably connected to the PTC heater body 4. A ventilation fan 12 is provided on the upper side of the connecting frame 9. A ring 13 is provided on the upper side of the ventilation fan 12. The ring 13 is engaged with the filter screen 14.

[0032] It should be noted that during use, first rotate the connecting bolt 6 to disconnect it from the bottom frame 1, then rotate and open the clamping plate 5. Since the side of the trapezoidal block 3 is inclined, during installation, the PTC heater body 4 can be directly inserted into the inside of the trapezoidal block 3. At this time, the return spring 2 on the side of the trapezoidal block 3 will undergo elastic deformation, which will support the trapezoidal block 3. Since the inner length of the bottom frame 1 and the clamping plate 5 is less than the length of the PTC heater body 4, the PTC heater body 4 will be clamped in the middle of the bottom frame 1 and the clamping plate 5. Then rotate the clamping plate 5 to connect the connecting bolt 6 to the bottom frame 1 by thread. Specific Implementation Example 2

[0034] This embodiment is designed to address the problem of dust accumulation on the inside of the PTC heater body 4, which hinders conduction and reduces connection losses.

[0035] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, when it is necessary to clean the inside of the PTC heater body 4, the threaded rod 10 is rotated. Since the threaded rod 10 is rotatably connected to the clamping plate 5 and threadedly connected to the connecting frame 9, and the connecting frame 9 is also slidably connected to the limiting rod 7 through the ear plate 8, the rotation of the threaded rod 10 will cause the cleaning part 11 to move down, and the cleaning part 11 will be slidably connected to the PTC heater body 4. When the cleaning part 11 moves down, it will clean the inside of the PTC heater body 4, thereby reducing the impact of dust on the PTC heater body 4 and thus facilitating the reduction of wear. After cleaning is completed, the threaded rod 10 is rotated in the opposite direction to move the connecting frame 9 back up, thereby disconnecting the cleaning part 11 from the PTC heater body 4, so as not to affect the heat generated by the PTC heater body 4 during operation, and to facilitate heating. Specific Implementation Example 3

[0037] This embodiment is designed to address the issue of reducing connection loss even when airflow is slow.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, when the ventilation fan 12 is turned on, the ventilation fan 12 can draw air from the lower side of the connecting frame 9. The cleaning part 11 has a lot of gaps in the middle, so it will not be blocked, thereby accelerating the air circulation near the PTC heater body 4 and further reducing losses. In addition, a filter screen 14 is provided inside the ring 13. The filter screen 14 can also filter the transported air and prevent dust from being transported into the air. In addition, the filter screen 14 inside the ring 13 is removable for easy cleaning.

[0039] The contents not described in detail in this specification are existing technologies known to those skilled in the art. All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A PTC heater capable of reducing switching loss, comprising: The bottom frame (1) is characterized in that it further comprises: The clamping plate (5) is provided with a dust removal mechanism on the upper side, wherein the dust removal mechanism comprises a limiting rod (7), an ear plate (8) and a connecting frame (9), the limiting rod (7) is in sliding connection with the ear plate (8), and the ear plate (8) is arranged in an array; The upper side of the connecting frame (9) is provided with a heat dissipation mechanism, wherein the heat dissipation mechanism comprises an air exchange fan (12), a circular ring (13) and a filter screen (14), the circular ring (13) is in clamping connection with the filter screen (14), and the circular ring (13) is arranged on the upper side of the air exchange fan (12). The inner side of the bottom frame (1) is provided with reset springs (2), and the reset springs (2) are arranged in an array.

2. The PTC heater capable of reducing switching loss according to claim 1, characterized in that: The reset springs (2) are in fixed connection with the trapezoidal blocks (3), the reset springs (2) correspond to the trapezoidal blocks (3) one by one, and the trapezoidal blocks (3) are closely attached to the PTC heater bodies (4).

3. The PTC heater capable of reducing switching loss according to claim 2, characterized in that: The right side of the bottom frame (1) is in rotary connection with the right side of the clamping plate (5), and the left side of the bottom frame (1) and the left side of the clamping plate (5) are both in threaded connection with the connecting bolts (6).

4. The PTC heater capable of reducing switching loss according to claim 1, characterized in that: The upper side of the bottom frame (1) is provided with limiting rods (7), the limiting rods (7) are arranged in an array, and the limiting rods (7) correspond to the ear plates (8) one by one.

5. The PTC heater capable of reducing switching loss according to claim 1, characterized in that: The ear plates (8) are in fixed connection with the connecting frames (9), the connecting frames (9) are in threaded connection with the threaded rods (10), and the threaded rods (10) are in rotary connection with the clamping plate (5).

6. The PTC heater capable of reducing switching loss according to claim 1, characterized in that: The inner side of the connecting frame (9) is provided with a cleaning piece (11), the cleaning piece (11) is in sliding connection with the PTC heater body (4), and the upper side of the connecting frame (9) is provided with an air exchange fan (12).

7. The PTC heater capable of reducing switching loss according to claim 6, characterized in that: ​

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