Heating core structure of PTC heater

Abstract

The utility model discloses a PTC heater heating core structure which comprises a device body, the front side of the device body is fixedly connected with two pins in mirror symmetry, the side face of the device body is connected with a plurality of first aluminum plates and second aluminum plates, and a cooling fin is connected between the first aluminum plates and the second aluminum plates. A plurality of limiting grooves distributed at equal intervals are fixedly connected to one side of the second aluminum plate, a clamping block is connected into each limiting groove in a telescopic mode, a ceramic heating piece is connected between each clamping block and the corresponding limiting groove, the ceramic heating pieces are attached to the first aluminum plate, and a plurality of fasteners are connected to the outer portion of the first aluminum plate. The storage groove is formed in the limiting groove, and the clamping block is telescopically connected in the storage groove, so that the mounting firmness of the ceramic heating sheet in the limiting groove is improved, and the situation that when the first aluminum plate and the second aluminum plate are assembled, the ceramic heating sheet falls off from the limiting groove, and the assembling efficiency of the device is affected is avoided.

Description

Technical Field

[0001] This utility model relates to the field of PTC heater technology, and in particular to a heating core structure for a PTC heater. Background Technology

[0002] Patent publication number CN222192577U discloses a heating core structure for a PTC heater, relating to the field of PTC heater technology. The structure includes a main body, a first aluminum plate, a limiting groove, a connecting strip, and a knob. One end of the main body has a positive electrode pin, and the other end has a negative electrode pin. A connecting plate is embedded in one side of the main body, and one end of the connecting plate is welded to the first aluminum plate. This heating core structure replaces the traditional aluminum tube with a first and second aluminum plate, and a limiting groove is welded to one side of the aluminum plate. By embedding a ceramic heating element inside the limiting groove, the surface of the ceramic heating element can fully contact the limiting groove, allowing the ceramic heating element to transfer heat to the limiting groove. The limiting groove then transfers heat to the second aluminum plate, which in turn transfers heat to the heat sink, thereby improving the heat conduction efficiency of the ceramic heating element and increasing the heating speed of the heat sink.

[0003] The ceramic heating plate in this patent is directly installed in the limiting groove, but the limiting groove lacks a limiting component. When assembling the second aluminum plate with the ceramic heating plate installed, the ceramic heating plate is prone to falling out of the limiting groove. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a PTC heater heating core structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a PTC heater heating core structure, comprising a device body, two mirror-symmetrical pins fixedly connected to the front side of the device body, multiple aluminum plates one and two connected to the side of the device body, a heat sink connected between the aluminum plates one and two, multiple equidistantly distributed limiting grooves fixedly connected to one side of the aluminum plate two, a clamping block telescopically connected in each limiting groove, a ceramic heating element connected between the clamping block and the limiting groove, the ceramic heating element being in contact with the aluminum plate one, and multiple fasteners connected to the outside of the aluminum plate one.

[0006] As a further description of the above technical solution: the fastener includes an L-shaped block 1 and an L-shaped block 2 connected to the outside of the aluminum plate 1. The L-shaped block 1 and the L-shaped block 2 are telescopically connected to each other. A threaded block is movably connected to the inner side of the L-shaped block 1 and the inner side of the L-shaped block 2. The threaded block is threadedly connected to the outside of the aluminum plate 1.

[0007] As a further description of the above technical solution: a storage groove is horizontally opened on one side inner wall of the limiting groove, the clamping block is movably connected in the storage groove, a spring is fixed between the clamping block and the storage groove, two mirror-symmetrical sliding grooves are horizontally opened on the inner wall of the storage groove, a slider is slidably connected in the sliding groove, the slider is fixedly connected to the clamping block, and silicone sheets are fixedly connected to the outer side of the clamping block and the side wall of the limiting groove.

[0008] As a further description of the above technical solution: a blind hole is horizontally opened on the end face of the second L-shaped block, and a guide rod is telescopically connected inside the blind hole, and the guide rod is fixedly connected to the first L-shaped block.

[0009] As a further description of the above technical solution: two mirror-symmetrical sliding grooves are horizontally opened on the inner wall of the blind hole, and a slider is slidably connected in the sliding groove. The slider is fixedly connected to the guide rod, and a spring is fixed between the sliding groove and the slider.

[0010] As a further description of the above technical solution: a threaded groove is horizontally opened on the outer side of the aluminum plate one, the threaded block is threadedly connected in the threaded groove, and a countersunk hole is horizontally passed through the inner side of the L-shaped block one and the L-shaped block two respectively. A connecting rod is movably connected in the countersunk hole, one end of the connecting rod is fixedly connected to a screw block, and the other end is fixedly connected to the threaded block. The threaded block is made of ceramic material.

[0011] As a further description of the above technical solution: grooves are provided on the opposite surfaces of the first aluminum plate and the second aluminum plate, the heat sink is connected in the two grooves, and the thickness of the ceramic heating element is greater than the depth of the limiting groove.

[0012] This utility model has the following beneficial effects:

[0013] Compared with existing technologies, this PTC heater heating core structure improves the stability of the ceramic heating element within the limiting groove by creating a storage groove in the limiting groove and a telescopic connecting clamp within the storage groove. This prevents the ceramic heating element from falling out of the limiting groove during the assembly of aluminum plate one and aluminum plate two, thus affecting the assembly efficiency of the device. By setting fasteners composed of L-shaped blocks one and two and telescopically connecting them, and using threaded blocks to connect to the outside of aluminum plate one, the tightness of the fit between the aluminum plates is improved, as is the tightness of the fit between the ceramic heating element and aluminum plate one, thereby ensuring the heat conduction efficiency of the heater. Attached Figure Description

[0014] Figure 1 This is a three-dimensional view of the overall structure of the heating core structure of a PTC heater proposed in this utility model;

[0015] Figure 2 This is a top sectional view of the connection between the limiting groove and the ceramic heating element in the heating core structure of a PTC heater proposed in this utility model;

[0016] Figure 3 This is a side sectional view showing the connection between L-shaped block one and L-shaped block two in a PTC heater heating core structure proposed in this utility model;

[0017] Figure 4 This utility model proposes a heating core structure for a PTC heater. Figure 2 Enlarged view of the structure at point A in the middle;

[0018] Figure 5 This utility model proposes a heating core structure for a PTC heater. Figure 3 Enlarged view of the structure at point B;

[0019] Figure 6 This utility model proposes a heating core structure for a PTC heater. Figure 3 Enlarged view of the structure at point C.

[0020] Legend:

[0021] 1. Device body; 2. Pin; 3. Aluminum plate one; 4. L-shaped block one; 5. Rotary block; 6. Heat sink; 7. Aluminum plate two; 8. Guide rod; 9. L-shaped block two; 10. Groove; 11. Limiting groove; 12. Ceramic heating element; 13. Clamping block; 14. Threaded block; 15. Spring one; 16. Storage groove; 17. Silicone sheet; 18. Countersunk hole; 19. Connecting rod; 20. Blind hole; 21. Spring two; 22. Slide groove two; 23. Slider two. Detailed Implementation

[0022] 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.

[0023] Reference Figures 1 to 6This utility model provides a PTC heater heating core structure, comprising a device body 1, with two mirror-symmetrical pins 2 fixedly connected to the front side of the device body 1, and multiple aluminum plates 3 and 7 connected to the side of the device body 1. A heat sink 6 is connected between the aluminum plates 3 and 7. Multiple equidistant limiting grooves 11 are fixedly connected to one side of the aluminum plate 7, and a clamping block 13 is telescopically connected in each limiting groove 11. A ceramic heating element 12 is connected between the clamping block 13 and the limiting groove 11. Grooves 10 are provided on the opposite surfaces of the aluminum plates 3 and 7, and the heat sink 6 is connected to... Within the two grooves 10, the thickness of the ceramic heating element 12 is greater than the depth of the limiting groove 11. A storage groove 16 is horizontally opened on one side of the inner wall of the limiting groove 11. The clamping block 13 is movably connected in the storage groove 16. A spring 15 is fixed between the clamping block 13 and the storage groove 16. Two mirror-symmetrical sliding grooves are horizontally opened on the inner wall of the storage groove 16. A slider 1 is slidably connected in the sliding groove 1. The slider 1 is fixedly connected to the clamping block 13. Silicone sheets 17 are fixedly connected to the outer side of the clamping block 13 and the side wall of the limiting groove 11. The ceramic heating element 12 is attached to the aluminum plate 3. Multiple fasteners are connected to the outside of the aluminum plate 3.

[0024] The fasteners include an L-shaped block 4 and an L-shaped block 9 connected to the outside of an aluminum plate 3. The L-shaped block 4 and L-shaped block 9 are telescopically connected. A blind hole 20 is horizontally formed on the end face of the L-shaped block 9. A guide rod 8 is telescopically connected inside the blind hole 20 and is fixedly connected to the L-shaped block 4. Two mirror-symmetrical sliding grooves 22 are horizontally formed on the inner wall of the blind hole 20. A slider 23 is slidably connected inside the sliding grooves 22 and is fixedly connected to the guide rod 8. The sliding grooves 22 and slider 23 are jointly fixed together. A spring 21, a threaded block 14 is movably connected to the inner side of L-shaped block 4 and L-shaped block 9. The threaded block 14 is threaded to the outside of aluminum plate 3. A threaded groove is opened horizontally on the outside of aluminum plate 3. The threaded block 14 is threaded to the inside of the threaded groove. A countersunk hole 18 is horizontally passed through the inner side of L-shaped block 4 and L-shaped block 9. A connecting rod 19 is movably connected to the countersunk hole 18. One end of the connecting rod 19 is fixedly connected to the rotating block 5, and the other end is fixedly connected to the threaded block 14. The threaded block 14 is made of ceramic.

[0025] By opening a storage groove 16 in the limiting groove 11 and extending and connecting the clamping block 13 in the storage groove 16, the firmness of the ceramic heating element 12 installed in the limiting groove 11 is improved, and the ceramic heating element 12 is prevented from falling out of the limiting groove 11 when assembling the aluminum plate 1 3 and the aluminum plate 2 7, which would affect the assembly efficiency of the device. By setting a fastener composed of L-shaped block 1 4 and L-shaped block 2 9 and extending and connecting L-shaped block 1 4 and L-shaped block 2 9 in a telescopic manner, and connecting it to the outside of aluminum plate 1 3 with threaded block 14, the tightness of the fit between the aluminum plates is improved, and the tightness of the fit between the ceramic heating element 12 and aluminum plate 1 3 is also improved, thereby ensuring the heat conduction efficiency of the heater.

[0026] Working principle: When installing the ceramic heating element 12 and the limiting groove 11, firstly, one end of the ceramic heating element 12 abuts against the clamping block 13, and the ceramic heating element 12 is pushed towards the clamping block 13, causing the ceramic heating element 12 to drive the clamping block 13 to move into the receiving groove 16. At the same time, the spring 15 is compressed, causing the other end of the ceramic heating element 12 to abut against the side wall of the limiting groove 11, and the inner side of the ceramic heating element 12 to abut against the inner wall of the limiting groove 11. At this time, the compressed spring 15 applies a pushing force to the clamping block 13 towards the outside of the receiving groove 16, so that the clamping block 13 is in close contact with the ceramic heating element 12, improving the firmness of the ceramic heating element 12 in the limiting groove 11 and preventing the ceramic heating element 12 from falling out of the limiting groove 11 during the installation process. Then, the L-shaped block 4 and the L-shaped block... The L-shaped block 4 pulls outward, causing the guide rod 8 to move towards the outside of the blind hole 20. At the same time, the spring 21 is compressed, increasing the distance between the L-shaped block 4 and the L-shaped block 9. Then, the L-shaped block 4 and the L-shaped block 9 abut against the outer sides of the aluminum plates 3 on both sides of the device. Then, the connecting rod 19 is pushed by the rotating block 5, and the connecting rod 19 pushes the threaded block 14, causing the threaded block 14 to abut against the entrance end of the threaded groove. Then, the rotating block 5 is rotated, and the rotating block 5 drives the threaded block 14 to rotate through the connecting rod 19, causing the threaded block 14 to screw into the threaded groove and fix each aluminum plate. At the same time, the compressed spring 21 will apply a reverse pulling force, so that the L-shaped block 4 and the L-shaped block abut firmly against the outside of the aluminum plate 3, causing each aluminum plate to press against each other, improving the tightness of the fit between the ceramic heating element 12 and the aluminum plate 3.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A PTC heater heating core structure, comprising a device body (1), the front side of the device body (1) is fixedly connected with two mirror-symmetrical pins (2), characterized in that: The side of the device body (1) is connected to multiple aluminum plates one (3) and aluminum plates two (7). A heat sink (6) is connected between aluminum plates one (3) and aluminum plates two (7). Multiple equidistant limiting grooves (11) are fixedly connected to one side of aluminum plates two (7). A clamping block (13) is telescopically connected in each limiting groove (11). A ceramic heating element (12) is connected between the clamping block (13) and the limiting groove (11). The ceramic heating element (12) is in contact with aluminum plates one (3). Multiple fasteners are connected to the outside of aluminum plates one (3).

2. The PTC heater heating core structure according to claim 1, characterized in that: The fastener includes an L-shaped block 1 (4) and an L-shaped block 2 (9) connected to the outside of the aluminum plate 1 (3). The L-shaped block 1 (4) and the L-shaped block 2 (9) are telescopically connected to each other. A threaded block (14) is movably connected to the inner side of the L-shaped block 1 (4) and the inner side of the L-shaped block 2 (9). The threaded block (14) is threadedly connected to the outside of the aluminum plate 1 (3).

3. The PTC heater heating core structure according to claim 1, characterized in that: A storage groove (16) is horizontally opened on one side inner wall of the limiting groove (11). The clamping block (13) is movably connected in the storage groove (16). A spring (15) is fixed between the clamping block (13) and the storage groove (16). Two mirror-symmetrical sliding grooves are horizontally opened on the inner wall of the storage groove (16). A slider is slidably connected in the sliding groove. The slider is fixedly connected to the clamping block (13). Silicone sheets (17) are fixedly connected to the outer side of the clamping block (13) and the side wall of the limiting groove (11).

4. The PTC heater heating core structure according to claim 2, characterized in that: A blind hole (20) is horizontally opened on the end face of the second L-shaped block (9). A guide rod (8) is telescopically connected inside the blind hole (20). The guide rod (8) is fixedly connected to the first L-shaped block (4).

5. The PTC heater heating core structure according to claim 4, characterized in that: The inner wall of the blind hole (20) has two mirror-symmetrical sliding grooves (22) horizontally opened. A slider (23) is slidably connected in the sliding groove (22). The slider (23) is fixedly connected to the guide rod (8). A spring (21) is fixed between the sliding groove (22) and the slider (23).

6. The PTC heater heating core structure according to claim 2, characterized in that: A threaded groove is horizontally opened on the outer side of the aluminum plate (3), and the threaded block (14) is threadedly connected in the threaded groove. The inner sides of the L-shaped block (4) and the L-shaped block (9) are each horizontally penetrated by a countersunk hole (18). A connecting rod (19) is movably connected in the countersunk hole (18). One end of the connecting rod (19) is fixedly connected to a swivel block (5), and the other end is fixedly connected to the threaded block (14). The threaded block (14) is made of ceramic material.

7. The PTC heater heating core structure according to claim 1, characterized in that: The aluminum plate 1 (3) and the aluminum plate 2 (7) are provided with grooves (10) on their opposite sides. The heat sink (6) is connected in the two grooves (10). The thickness of the ceramic heating element (12) is greater than the depth of the limiting groove (11).

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