Heating core structure of PTC heater

Abstract

The utility model discloses a PTC heater heating core structure, and relates to the PTC heater technology field, the PTC heater heating core structure comprises a device main body, a first aluminum plate, a spacing groove, a connecting strip and a knob, one end of the device main body is provided with a positive electrode pin, the other end of the device main body is provided with a negative electrode pin, one side of the device main body is embedded with a connecting plate, and the connecting plate is provided with a second aluminum plate. According to the heating core structure, a traditional aluminum pipe is replaced by the first aluminum plate and the second aluminum plate, the limiting grooves are welded to one sides of the aluminum plates, and the ceramic heating pieces are embedded in the limiting grooves, so that the surfaces of the ceramic heating pieces are in full contact with the limiting grooves, and the heating effect is improved. And the ceramic heating piece can transmit heat to the limiting groove, so that the limiting groove can transmit the heat to the second aluminum plate, the second aluminum plate can transmit the heat to the cooling fin, the heat conduction efficiency of the ceramic heating piece is improved, and the temperature rising speed of the cooling fin is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of PTC heaters, in particular to a heating core structure of a PTC heater. Background Art

[0002] The heating core of a PTC heater is usually composed of a PTC ceramic heating sheet and an aluminum tube. The heat generated by the PTC ceramic heating sheet is transferred to the aluminum tube, and then the aluminum tube transfers the temperature to the heat sink for heating. After searching, the Chinese patent authorization number CN206402473U discloses an energy-saving PTC heating core. The heating core structure is safe to use, compact, easy to process, has high heat generation, stable power, no noise, long service life, high reliability, no open flame, good safety performance, and has good energy-saving characteristics while ensuring a good heating effect. However, the heating element inside the heating core is arranged inside the aluminum tube. In order to prevent the heating element from shaking inside the aluminum tube, the heating element is usually bonded to the inner wall of the aluminum tube, which makes it inconvenient to remove and replace the heating core when it is damaged. At the same time, due to the tubular structure of the aluminum tube, it cannot fully contact with both ends of the heating element, which leads to a reduction in the contact area between the heating element and the aluminum tube, thereby affecting the heat conduction efficiency between the heating element and the aluminum tube. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a PTC heater heating core structure, which solves the problem in the background technology that the heating element inside the existing heating core structure cannot fully contact with the aluminum tube, thereby reducing the heat conduction efficiency and being inconvenient to replace during use.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: a PTC heater heating core structure, including a device body, a first aluminum plate, a limit groove, a connecting strip and a knob, one end of the device body is provided with a positive electrode pin, the other end of the device body is provided with a negative electrode pin, one side of the device body is embedded with a connecting plate, one end of the connecting plate is welded to the first aluminum plate, four first aluminum plates are provided, the four first aluminum plates are distributed on one side of the heat sink, and the other side of the heat sink is provided with a second aluminum plate;

[0005] The limiting groove is arranged between the first aluminum plate and the second aluminum plate, and the limiting groove is welded to the side of the second aluminum plate. The shape of the limiting groove is consistent with the shape of the ceramic heating plate. The ceramic heating plate is embedded in the limiting groove, and the other side of the ceramic heating plate is tightly fitted with the surface of the first aluminum plate.

[0006] Preferably, the limit grooves are arranged at equal intervals with each other, and the limit grooves are made of the same material as the second aluminum plate. The depth of the limit grooves is less than the thickness of the ceramic heating plate, which is conducive to allowing one side of the ceramic heating plate to fit with the inside of the limit groove while the other side can fit with the first aluminum plate, so that the heat of the ceramic heating plate can be transferred to the first aluminum plate.

[0007] Preferably, grooves are provided on the surfaces of the first aluminum plate and the second aluminum plate, and the surfaces of the grooves are tightly fitted with the surfaces of the limit blocks. The limit blocks are distributed on both sides of the heat sink. The heat sink is in a multi-bend shape, and the bends of the heat sink are welded to the limit blocks. The provision of the limit blocks is beneficial for the first aluminum plate and the second aluminum plate to transfer heat to the limit blocks, and then the limit blocks can transfer heat to the heat sink. Compared with the direct contact between the heat sink and the first aluminum plate and the second aluminum plate, the heat conduction area is greatly improved, which is beneficial for the ceramic heating plate to quickly heat the heat sink.

[0008] Preferably, connecting strips are provided at the top and bottom of the first aluminum plate and the second aluminum plate, the connecting strips are U-shaped, and both ends of the connecting strips are threadedly connected to the threaded block, a knob is welded at one end of the threaded block, and the knob can be turned to drive the threaded block to rotate, and the threaded block can be rotated and tightened so that one end of the insulating block can be pressed against the surface of the aluminum plate, so that the first aluminum plate, the second aluminum plate, and the heat sink can fit tightly together, and the ceramic heating plate can be easily replaced through a detachable connection between them.

[0009] Preferably, an insulating block is embedded in one end of the knob, and the insulating block is made of ceramic. One end of the insulating block is located in a circular groove on the surface of the first aluminum plate. Through the circular groove on the side of the first aluminum plate, the insulating block can be limited when it is against the circular groove on the side of the first aluminum plate, so that the insulating block can firmly against the surface of the first aluminum plate, so that the first aluminum plate, the second aluminum plate, and the heat sink can be tightly connected.

[0010] Preferably, a gasket is provided between the connecting strip and the first aluminum plate, circular holes are provided at both ends of the gasket, and the gasket is made of ceramic material, and the surface of the gasket is bonded to the connecting strip, which helps to maintain insulation between the first aluminum plate and the second aluminum plate and the connecting strip.

[0011] Preferably, a temperature sensor and an automatic circuit breaker are provided inside the main body of the device, and the temperature sensor and the automatic circuit breaker are connected in series on the ceramic heating plate. The temperature of the heat sink is monitored by the temperature sensor. When the heat sink is heated to a specified temperature, the automatic circuit breaker can disconnect the circuit to stop heating, thereby achieving an energy-saving effect. When the temperature is lower than the specified temperature, the automatic circuit breaker can connect the circuit, thereby enabling the ceramic heating plate to be heated.

[0012] The utility model provides a PTC heater core structure, which has the following beneficial effects:

[0013] (1) A PTC heater heating core structure, wherein the heating core structure replaces the traditional aluminum tube with a first aluminum plate and a second aluminum plate, and a limiting groove is welded on one side of the aluminum plate. By embedding a ceramic heating plate in the limiting groove, the surface of the ceramic heating plate is facilitated to fully contact the limiting groove, so that the ceramic heating plate can transfer heat to the limiting groove, and the limiting groove can transfer heat to the second aluminum plate, so that the second aluminum plate can transfer heat to the heat sink, which is conducive to improving the thermal conduction efficiency of the ceramic heating plate, and thus is conducive to increasing the heating rate of the heat sink.

[0014] (2) The heating core structure of the PTC heater can drive the threaded block to rotate by turning the knob, and the threaded block can drive the insulating block to move outward while rotating, so that the insulating block can be moved out from the circular hole groove on the side of the first aluminum plate, so that the first aluminum plate and the second aluminum plate can be disassembled, and the ceramic heating plate inside the limit groove can be taken out by disassembling the first aluminum plate and the second aluminum plate, which is convenient for replacing and repairing the ceramic heating plate. After the replacement is completed, the insulating blocks at both ends of the connecting strip are aligned with the circular groove on the side of the first aluminum plate, and then the knob is turned. The knob can drive the threaded block to move while rotating, and the threaded block can make one end of the insulating block press against the groove on the side of the first aluminum plate while moving, so that the first aluminum plate and the second aluminum plate can be fixed again.

[0015] This solves the problem that the heating element inside the existing heating core structure cannot fully contact the aluminum tube, which reduces the heat conduction efficiency and is inconvenient to replace during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the limit groove and the heat sink of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the connecting strip of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the insulation block of the utility model;

[0020] Figure 5 This is a schematic diagram of the first aluminum plate structure of the utility model.

[0021] In the figure, 1. device body; 2. positive pin; 3. negative pin; 4. connecting plate; 5. first aluminum plate; 6. heat sink; 7. limit block; 8. second aluminum plate; 9. limit groove; 10. ceramic heating plate; 11. connecting strip; 12. gasket; 13. insulating block; 14. threaded block; 15. knob. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0023] See also Figure 1-5 A PTC heater heating core structure includes a device body 1, a first aluminum plate 5, a limiting groove 9, a connecting strip 11 and a knob 15. A positive electrode pin 2 is provided at one end of the device body 1, and a negative electrode pin 3 is provided at the other end of the device body 1. A connecting plate 4 is embedded on one side of the device body 1, and one end of the connecting plate 4 is welded to the first aluminum plate 5. Four first aluminum plates 5 are provided, and the four first aluminum plates 5 are distributed on one side of the heat sink 6. A second aluminum plate 8 is provided on the other side of the heat sink 6; the limiting groove 9 is provided between the first aluminum plate 5 and the second aluminum plate 8, and the limiting groove 9 is welded to the side of the second aluminum plate 8. The shape of the limiting groove 9 is consistent with the shape of the ceramic heating plate 10. The ceramic heating plate 10 is embedded in the limiting groove 9, and the other side of the ceramic heating plate 10 is tightly fitted with the surface of the first aluminum plate 5. The limiting grooves 9 are arranged at equal intervals from each other, and the limiting grooves 9 and the second aluminum plate 8 are made of the same material. The depth of the limiting groove 9 is less than the thickness of the ceramic heating plate 10. The surfaces of the first aluminum plate 5 and the second aluminum plate 8 are both provided with grooves, and the surfaces of the grooves are tightly fitted with the surfaces of the limiting blocks 7. The limiting blocks 7 are distributed on both sides of the heat sink 6. The heat sink 6 is in a multi-bend shape, and the bending parts of the heat sink 6 are welded to the limiting blocks 7. The heating core structure replaces the traditional aluminum tube with the first aluminum plate 5 and the second aluminum plate 8, and the limiting groove 9 is welded on one side of the aluminum plate. By embedding the ceramic heating plate 10 in the limiting groove 9, it is beneficial to make the surface of the ceramic heating plate 10 fully contact with the limiting groove 9, and then the ceramic heating plate 10 can transfer heat to the limiting groove 9, so that the limiting groove 9 can transfer heat to the second aluminum plate 8, so that the second aluminum plate 8 can transfer heat to the heat sink 6, which is beneficial to improve the thermal conductivity efficiency of the ceramic heating plate 10, and then it is beneficial to improve the heating rate of the heat sink 6. Example

[0024] The first aluminum plate 5 and the second aluminum plate 8 are provided with connecting strips 11 at the top and bottom. The connecting strips 11 are in a U-shaped structure, and both ends of the connecting strips 11 are threadedly connected to the threaded block 14. A knob 15 is welded at one end of the threaded block 14, and an insulating block 13 is embedded at one end of the knob 15. The insulating block 13 is made of ceramic material, and one end of the insulating block 13 is located in the circular groove on the surface of the first aluminum plate 5. Through the circular groove on the side of the first aluminum plate 5, when the insulating block 13 is against the circular groove on the side of the first aluminum plate 5, the insulating block 13 can be limited, so that the insulating block 13 can firmly against the surface of the first aluminum plate 5, so that the first aluminum plate 5, the second aluminum plate 8, and the heat sink 6 can be tightly connected, and by turning the knob 15, the knob 15 can drive the threaded block 14 to rotate, and the threaded block 14 is rotated. While rotating, the insulating block 13 can be driven to move outward, so that the insulating block 13 can be moved out from the circular hole groove on the side of the first aluminum plate 5, so that the first aluminum plate 5 and the second aluminum plate 8 can be disassembled. By disassembling the first aluminum plate 5 and the second aluminum plate 8, the ceramic heating plate 10 inside the limiting groove 9 can be taken out, which is conducive to the replacement and maintenance of the ceramic heating plate 10. After the replacement, the insulating blocks 13 at both ends of the connecting strip 11 are aligned with the circular grooves on the side of the first aluminum plate 5, and then the knob 15 is rotated. When the knob 15 is rotated, the threaded block 14 can be driven to move. When the threaded block 14 moves, the insulating block 13 at one end can be pressed against the groove on the side of the first aluminum plate 5, so that the first aluminum plate 5 and the second aluminum plate 8 can be re-fixed. Example

[0025] A temperature sensor and an automatic circuit breaker are provided inside the device body 1, and the temperature sensor and the automatic circuit breaker are connected in series to the ceramic heating plate 10. The temperature of the heat sink 6 is monitored by the temperature sensor. When the heat sink 6 is heated to a specified temperature, the automatic circuit breaker can disconnect the circuit to stop heating, thereby achieving an energy-saving effect. When the temperature is lower than the specified temperature, the automatic circuit breaker can connect the circuit, so that the ceramic heating plate can be heated.

[0026] Working principle: By connecting the positive pin 2 and the negative pin 3 to the power supply, the heating core structure replaces the traditional aluminum tube with the first aluminum plate 5 and the second aluminum plate 8, and welds the limiting groove 9 on one side of the aluminum plate. By embedding the ceramic heating plate 10 in the limiting groove 9, it is beneficial to make the surface of the ceramic heating plate 10 fully contact with the limiting groove 9, so that the ceramic heating plate 10 can transfer heat to the limiting groove 9, so that the limiting groove 9 can transfer heat to the second aluminum plate 8, so that the second aluminum plate 8 can transfer heat to the heat sink 6, which is beneficial to improve the thermal conductivity efficiency of the ceramic heating plate 10, and thus it is beneficial to improve the heating rate of the heat sink 6. Through the circular groove on the side of the first aluminum plate 5, when the insulating block 13 is against the circular groove on the side of the first aluminum plate 5, the insulating block 13 can be limited, so that the insulating block 13 can firmly against the surface of the first aluminum plate 5, so that the first aluminum plate 5, the second aluminum plate 8, and the heat sink 6 The two parts can be tightly connected, and the knob 15 can be turned to drive the threaded block 14 to rotate. When the threaded block 14 rotates, the insulating block 13 can be driven to move outward, so that the insulating block 13 can be moved out from the circular hole groove on the side of the first aluminum plate 5, so that the first aluminum plate 5 and the second aluminum plate 8 can be disassembled. By disassembling the first aluminum plate 5 and the second aluminum plate 8, the ceramic heating plate 10 inside the limiting groove 9 can be taken out, which is conducive to the replacement and maintenance of the ceramic heating plate 10. After the replacement, the insulating blocks 13 at both ends of the connecting strip 11 are aligned with the circular grooves on the side of the first aluminum plate 5, and then the knob 15 is turned. The knob 15 can be driven to move while the threaded block 14 rotates. When the threaded block 14 moves, the insulating block 13 at one end can be pressed against the groove on the side of the first aluminum plate 5, so that the first aluminum plate 5 and the second aluminum plate 8 can be re-fixed.

[0027] The components of the utility model include 1. device body; 2. positive electrode pin; 3. negative electrode pin; 4. connecting plate; 5. first aluminum plate; 6. heat sink; 7. limit block; 8. second aluminum plate; 9. limit groove; 10. ceramic heating plate; 11. connecting strip; 12. gasket; 13. insulating block; 14. threaded block; 15. knob, all of which are universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0028] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A PTC heater core structure, characterized in that: The device comprises a device body (1), a first aluminum plate (5), a limiting groove (9), a connecting strip (11) and a knob (15); one end of the device body (1) is provided with a positive electrode pin (2); the other end of the device body (1) is provided with a negative electrode pin (3); one side of the device body (1) is embedded with a connecting plate (4); one end of the connecting plate (4) is welded to the first aluminum plate (5); four first aluminum plates (5) are provided, and the four first aluminum plates (5) are distributed on one side of a heat sink (6); and a second aluminum plate (8) is provided on the other side of the heat sink (6); The limiting groove (9) is arranged between the first aluminum plate (5) and the second aluminum plate (8), and the limiting groove (9) is welded to the side of the second aluminum plate (8), the shape of the limiting groove (9) is consistent with the shape of the ceramic heating plate (10), the ceramic heating plate (10) is embedded in the limiting groove (9), and the other side of the ceramic heating plate (10) is tightly fitted with the surface of the first aluminum plate (5).

2. According to claim 1, a PTC heater core structure is characterized in that: The limiting grooves (9) are arranged at equal intervals from each other, and the limiting grooves (9) are made of the same material as the second aluminum plate (8). The depth of the limiting grooves (9) is less than the thickness of the ceramic heating plate (10).

3. The PTC heater core structure according to claim 1, characterized in that: The surfaces of the first aluminum plate (5) and the second aluminum plate (8) are both provided with grooves, and the surfaces of the grooves are tightly fitted with the surfaces of the limit blocks (7). The limit blocks (7) are distributed on both sides of the heat sink (6). The heat sink (6) is in a multi-bend shape, and the bends of the heat sink (6) are welded to the limit blocks (7).

4. The PTC heater core structure according to claim 1, characterized in that: Connecting strips (11) are provided at the top and bottom of the first aluminum plate (5) and the second aluminum plate (8); the connecting strip (11) is in a U-shaped structure, and both ends of the connecting strip (11) are threadedly connected to a threaded block (14); a knob (15) is welded to one end of the threaded block (14).

5. The PTC heater core structure according to claim 1, characterized in that: An insulating block (13) is embedded at one end of the knob (15); the insulating block (13) is made of ceramic material; one end of the insulating block (13) is located in a circular groove on the surface of the first aluminum plate (5).

6. The PTC heater core structure according to claim 1, characterized in that: A gasket (12) is provided between the connecting strip (11) and the first aluminum plate (5), circular holes are provided at both ends of the gasket (12), and the gasket (12) is made of ceramic material. The surface of the gasket (12) is bonded to the connecting strip (11).

7. The PTC heater core structure according to claim 1, characterized in that: A temperature sensor and an automatic circuit breaker are arranged inside the device body (1), and the temperature sensor and the automatic circuit breaker are connected in series to the ceramic heating plate (10).

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