Heater

Abstract

A flat tube is arranged outside a heating core, heat dissipation strips are respectively arranged on the surfaces of a group of opposite side plates of the flat tube, bases are respectively sleeved on the head portion and the tail portion of the heater, the heat dissipation strips are corrugated and are provided with a plurality of troughs and crests, and the heat dissipation strips are connected with the surfaces of the side plates through outer side bottom faces A at the troughs of the heat dissipation strips. U-shaped clamping blocks are arranged on the heat dissipation strips at the head and the tail of the heater, at least one continuous wave crest is located in an opening of each U-shaped clamping block, the transverse wall faces of the U-shaped clamping blocks are located between the tops of the heat dissipation strips and the base, and sunk screws penetrate through the base, the transverse wall faces and the heat dissipation strips from the outside of the base to fix the base, the transverse wall faces and the heat dissipation strips. According to the heater, a traditional shovel piece heat dissipation structure is replaced by the novel heat dissipation strip structure, aluminum plates used for being fixed to the flat pipes do not need to be arranged on the surfaces of the heat dissipation strips, materials can be reduced, the manufacturing cost is reduced, the heat dissipation performance is improved, and meanwhile fixation between the bases at the two ends of the heater and the heat dissipation strips located in the bases is achieved.

Description

Technical Field

[0001] The utility model relates to the field of heaters. Background Art

[0002] A heater is a device used to provide heat, such as an electric heater or a PTC electric heater, which can be used in household air conditioners and new energy vehicle air conditioners for heat dissipation. In order to improve the heat dissipation efficiency, a fin heat dissipation structure for auxiliary heat dissipation is required.

[0003] Traditional heaters use a sheet-like fin heat dissipation structure, which has a general heat dissipation effect. The sheet-like fin heat dissipation structure often uses a shoveling process directly on the surface of the flat tube to shovel out the sheet-like fins. The manufacturing cost is high, and the heat dissipation component as a whole uses more materials and is heavier. Utility Model Content

[0004] Purpose of the utility model: In view of the above problems, the purpose of the utility model is to provide a heater that can reduce material usage, reduce manufacturing costs, and improve heat dissipation performance.

[0005] Technical solution: A heater comprises a heat dissipation strip, a heating core and a base. The outside of the heating core is a flat tube. A group of opposite side plate surfaces of the flat tube are respectively provided with heat dissipation strips. The head and tail of the heater are respectively provided with bases. The heat dissipation strip is corrugated and has a plurality of troughs and crests. The heat dissipation strip is connected to the side plate surface through the outer bottom surface A at the trough. U-shaped blocks are provided on the heat dissipation strip at the head and tail of the heater. At least one continuous crest is in the opening of the U-shaped block. The lateral wall of the U-shaped block is between the top of the heat dissipation strip and the base. Countersunk screws are passed from the outside of the base through the base, the lateral wall and the heat dissipation strip to fix the three.

[0006] Furthermore, the vertical wall surface of the U-shaped block extends into the inner bottom surface A of the trough to ensure that the U-shaped block is set.

[0007] Furthermore, the angle α between the transverse wall and the vertical wall of the U-shaped block is 90-95°, so as to ensure the structural strength of the U-shaped block and withstand the force when the countersunk screw is penetrated and fixed.

[0008] Furthermore, the outer bottom surface B of the transverse wall is in close contact with the inner wall surface of the base, and the inner bottom surface B of the transverse wall is in close contact with the outer bottom surface C of the wave crest.

[0009] Furthermore, the troughs are flat-plate shaped, which is conducive to the heat dissipation strip being connected and fixed to the side plate surface of the flat tube through the outer bottom surface A of each trough; the crests are flat-plate shaped, which is conducive to the inner bottom surface B of the lateral wall and the outer bottom surface C of the crest to fit in contact.

[0010] Furthermore, the heat dissipation strips and flat tubes are made of aluminum material which is good for heat conduction.

[0011] Beneficial effect: The advantages of the utility model are: the heater replaces the traditional shovel-blade heat dissipation structure with a new heat dissipation strip structure, and there is no need to set an aluminum plate on the surface of the heat dissipation strip for fixing with the flat tube, which can reduce material usage, reduce manufacturing costs, and improve heat dissipation performance. At the same time, it solves the fixation between the bases at both ends of the heater and the heat dissipation strips inside it, ensuring the stability and reliability of the product structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 for Figure 1 Schematic diagram of the structure after removing the base and countersunk screws;

[0014] Figure 3 for Figure 1 Schematic diagram of the structure after removing the countersunk screws;

[0015] Figure 4 It is a structural schematic diagram of a U-shaped card block;

[0016] Figure 5 for Figure 3 A zoomed in view of the Figure Ⅰ . DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] A heater, such as Figures 1 to 3 As shown in , 5, it includes a heat dissipation strip 1, a heating core 2, a base 3, a U-shaped block 4, and a countersunk screw 5.

[0019] The exterior of the heating core 2 is an aluminum flat tube 21 , and a flat and long strip heating element is arranged inside the flat tube 21 , which may be a PTC ceramic heating element.

[0020] Aluminum heat dissipation strips 1 are respectively arranged on the surface of a group of opposite side plates 211 of the flat tube 21. The heat dissipation strips 1 are generally corrugated and can be integrally formed. In the length direction, they have a number of troughs 11 and crests 12. The heat dissipation strips 1 are connected to the surface of the side plates 211 through the outer bottom surface A111 at each trough 11, usually with thermal conductive adhesive. The trough 11 is flat, which is conducive to such connection and fixation. The length of the heat dissipation strips 1 basically covers the length of the flat tube 21.

[0021] Combined with Figure 4As shown, at the head and tail of the heater, a U-shaped block 4 is provided on the heat dissipation strip 1, so that at least one wave crest 12 is in the opening of the U-shaped block 4, and when there is more than one wave crest, at least two continuous wave crests are in the opening of the U-shaped block. The transverse wall 41 of the U-shaped block 4 is at the top of the heat dissipation strip 1, and it is best that the inner bottom surface B412 of the transverse wall 41 is in contact with the outer bottom surface C121 of the wave crest 12. The use of a flat plate at the wave crest 12 is conducive to such contact. The vertical wall 42 of the U-shaped block 4 extends above or onto the inner bottom surface A112 at the trough 11. The angle α between the transverse wall 41 and the vertical wall 42 is 90-105°.

[0022] The head and tail of the heater are respectively provided with a base 3, and the base 3 is provided on the outer peripheral surface of the heat dissipation strip 1, the U-shaped block 4 is between the top of the heat dissipation strip 1 and the base 3, the U-shaped block 4 is completely inside the base 3, and the outer bottom surface B411 of the lateral wall 41 of the U-shaped block 4 is in contact with the inner wall 31 of the base 3.

[0023] Combined with Figure 3 As shown, the countersunk screw 5 is inserted from the outside of the base 3 to the inside through the base 3, the transverse wall 41, and the heat dissipation strip 1 to fix the three. The front end of the countersunk screw 5 is in the U-shaped area of ​​the U-shaped block 4, and can act on any part of the heat dissipation strip in the U-shaped area, but does not touch the flat tube. A U-shaped block 4 is respectively arranged between the base 3 and the head and tail of each heat dissipation strip 1 to facilitate the fixation of each base to the head and tail of the heater. Then, each heater is provided with 4 U-shaped blocks (only 1 is shown in the figure), which are respectively arranged at the two end areas of the two heat dissipation strips, and are respectively used for fixing with 1 countersunk screw.

[0024] There are still conventional glue-filling sealing measures between the base and the head and tail of the heater. The head of the heating core still has conventional wires and is led out from a base, and both ends of the heating core still have conventional glue-filling sealing measures.

[0025] The heater of the utility model replaces the traditional shovel-blade heat dissipation structure with a new heat dissipation strip structure. There is no need to set an aluminum plate on the surface of the heat dissipation strip for fixing with the flat tube, which can reduce material usage, reduce manufacturing costs, and improve heat dissipation performance. At the same time, it solves the fixation between the bases at both ends of the heater and the heat dissipation strips inside them, thereby ensuring the stability and reliability of the product structure.

Claims

1. A heater, comprising a heat dissipation strip (1), a heating core (2), and a base (3), wherein the exterior of the heating core (2) is a flat tube (21), a group of opposite side plates (211) of the flat tube (21) are respectively provided with heat dissipation strips (1), and the head and tail of the heater are respectively provided with the base (3), characterized in that: The heat dissipation strip (1) is corrugated and has a plurality of troughs (11) and crests (12). The heat dissipation strip (1) is connected to the surface of the side plate (211) through the outer bottom surface A (111) at the trough (11). U-shaped clamping blocks (4) are arranged on the heat dissipation strip (1) at the head and tail of the heater. At least one continuous crest (12) is located in the opening of the U-shaped clamping block (4). The transverse wall surface (41) of the U-shaped clamping block (4) is located between the top of the heat dissipation strip (1) and the base (3). Countersunk screws (5) are arranged from the outside of the base (3) through the base (3), the transverse wall surface (41) and the heat dissipation strip (1) to fix the three.

2. A heater according to claim 1, characterized in that: The vertical wall surface (42) of the U-shaped clamping block (4) extends into the inner bottom surface A (112) at the wave valley (11).

3. A heater according to claim 2, characterized in that: The included angle α between the transverse wall surface (41) and the vertical wall surface (42) of the U-shaped clamping block (4) is 90-95°.

4. A heater according to claim 1, characterized in that: The outer bottom surface B (411) of the transverse wall surface (41) is in close contact with the inner wall surface (31) of the base (3), and the inner bottom surface B (412) of the transverse wall surface (41) is in close contact with the outer bottom surface C (121) of the wave crest (12).

5. A heater according to claim 1, characterized in that: The trough (11) and the crest (12) are both in the shape of a flat plate.

6. A heater according to claim 1, characterized in that: The heat dissipation strip (1) and the flat tube (21) are both made of aluminum.

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