Glue dipping hold-down type corrugated belt PTC (Positive Temperature Coefficient) heating assembly

Abstract

The utility model discloses a glue dipping hold-down type corrugated belt PTC heating assembly. The heating tube comprises an aluminum tube, a heating core and radiating fins, the flat face of the aluminum pipe is provided with a side edge protruding out of the flat face, the section of the side edge is in a C shape with an inward opening, and a groove is formed in the inner side of the side edge. The two side edges and the flat face jointly form an installation groove, the interior of the installation groove is coated with adhesive glue, and the cooling fins are bonded in the installation groove. After installation, the side edges are tightly pressed on the two sides of the cooling fins. The LED lamp tube has the advantages that the aluminum tube is provided with the C-shaped side edge and the groove formed in the inner side of the C-shaped side edge, so that redundant silica gel cannot flow out from the side face but is reserved in the mounting groove, especially in the groove, a bonding layer between the cooling fins and the aluminum tube is thicker, the bonding strength is higher, and meanwhile extra bonding force is provided between the two sides of the cooling fins and the inner wall of the mounting groove; the heat dissipation fins are fixed through the combined action of bonding force and pressing force, and the installation precision of the heat dissipation fins and the binding force between the heat dissipation fins and the aluminum pipe are further improved.

Description

Technical Field

[0003] ,

[0001] The utility model relates to a PTC heater, in particular to a glue - sticking and pressing type corrugated belt PTC heating component. Background Art

[0002] At present, more and more electrical appliances, new energy vehicles and other devices incorporate PTC heaters into their applications. Generally, a PTC heater is formed by alternately stacking a heating core and a heat - dissipating aluminum strip, or by combining a PTC heating core installed inside an aluminum tube and heat - dissipating fins installed on the outer wall of the aluminum tube to form a heating and heat - dissipating structure. However, in the latter case, due to the lack of positioning of the heat - dissipating fins and the fact that the excess adhesive between the heat - dissipating fins and the aluminum tube will flow out to both sides when being extruded during assembly and cannot be retained, there are often problems such as loose connection and poor stability, resulting in insufficient bonding force between the heat - dissipating fins and the aluminum tube, and finally the heat - dissipating fins falling off from the aluminum tube. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a glue - sticking and pressing type corrugated belt PTC heating component with tight and convenient assembly, high positioning accuracy, high bonding strength and anti - overflow glue.

[0004] To solve the above - mentioned technical problem, the glue - sticking and pressing type corrugated belt PTC heating component of the utility model comprises an aluminum tube, a heating core installed in the aluminum tube, and heat - dissipating fins installed on the flat surface of the aluminum tube; the flat surface of the aluminum tube has a side edge protruding from the flat surface, the cross - section of the side edge is a C - shape with an opening facing inwards, and a groove is formed on its inner side; the two side edges and the flat surface together form an installation groove for the heat - dissipating fins, the installation groove is coated with an adhesive, and the heat - dissipating fins are bonded in the installation groove through the adhesive; after installation, the side edges tightly press on both sides of the heat - dissipating fins.

[0005] The height of the side edge is 1 - 5 mm.

[0006] The top of the side edge has a sharp angle facing inwards. <00 , <000001 .

[0007] The adhesive is silica gel. [[ID=2 . The heat - dissipating fins are of a corrugated structure, and after stamping, a structure with a top surface呈多个并列排布的“艹”字形的结构.

[0009] The heat - dissipating fins are of a corrugated structure, and after stamping, a structure with a top surface呈多个并列排布的交错起伏矩形的结构.

[0010] The advantages of the present utility model are as follows: The aluminum tube has a C-shaped side and a groove formed on its inner side, so that the extruded excess silicone will no longer flow out of the aluminum tube surface from the side of the heat dissipation fins but be retained in the installation groove, especially in the side groove, making the bonding layer between the heat dissipation fins and the aluminum tube thicker, with higher bonding strength. At the same time, it also provides additional adhesive force between both sides of the heat dissipation fins and the inner wall of the installation groove; The heat dissipation fins are of a corrugated structure formed by integral stamping, without the need for welding or fixing by fixing parts, nor surface anti-corrosion treatment, with convenient production, short production cycle, small material loss, high qualification rate, low cost, and high heat exchange efficiency; The heat dissipation fins are fixed by the combined action of the silicone adhesive force and the pressing force at the top of the side, further improving the installation accuracy of the heat dissipation fins and the bonding force between them and the aluminum tube. Brief Description of the Drawings

[0011] Figure 1 is a three-dimensional view of the present utility model;

[0012] Figure 2 [[ID=IO]]is an enlarged view of the present utility model;

[0013] Figure 3 is a cross-sectional view after the installation of the present utility model;

[0014] Figure 4 is an enlarged cross-sectional view after the installation of the present utility model. Detailed Description of the Preferred Embodiment

[0015] The following further details the glue-bonding and pressing corrugated belt PTC heating component of the present utility model in conjunction with the drawings and the detailed description of the preferred embodiment.

[0016] As shown in the figure, the glue-bonding and pressing corrugated belt PTC heating component of the present utility model includes an aluminum tube 1, a heating core 2 installed in the aluminum tube 1, and heat dissipation fins 3 installed on the flat surface of the aluminum tube 1; The flat surface of the aluminum tube 1 has a side 4 protruding from the flat surface. The cross-section of the side 4 is C-shaped with an opening facing inward, and a groove 6 is formed on its inner side; The height of the side 4 is 1 - 5 mm, and the top has a sharp angle facing inward; The two sides 4 and the flat surface together form an installation groove 5 for the heat dissipation fins 3. Silicone is applied in the installation groove 5, and the heat dissipation fins 3 are bonded to the installation groove 5 through the silicone; After installation, the side 4 tightly presses on both sides of the heat dissipation fins 3.

[0017] The heat dissipation fins 3 are of a corrugated structure, and after stamping, a structure with a top surface呈多个并列排布的“艹”字形 can be formed, or as shown in the patent "A Heat Exchanger Structure of a Heater (Patent No. CN221992057U)", a structure with a top surface呈多个并列排布的交错起伏矩形 can be formed after stamping.

[0018] The production and assembly method of the glue-bonding and pressing corrugated belt PTC heating component includes the following steps:

[0019] A. Insert the heating core 2 into the cavity of the aluminum tube 1, apply vertical compression to the aluminum tube 1 to position the heating core 2, and ensure that the heating core and the aluminum tube are tightly fitted to improve the heat conduction efficiency.

[0020] B. Apply silicone to the mounting slot 5;

[0021] C. Adhere and fix the heat dissipation fins 3 to the mounting groove 5, so that the silicone is evenly filled into the gaps formed between the heat dissipation fins 3 and the mounting groove 5.

[0022] D. Power on heating element 2 to cure silicone using its own heat; or heat and cure silicone in a heating oven.

[0023] E. Apply pressure to the side 4 to bend it inward and press it tightly against both sides of the heat dissipation fins. During the pressing process, the sharp corner of the side 4 can also be pressed into the interior of the heat dissipation fins 3, and the recessed part at the root of the heat dissipation fins 3 can be limited from above, thereby improving the bonding strength between the heat dissipation fins 3 and the aluminum tube 1.

[0024] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A pressure-pressed corrugated belt PTC heating assembly, comprising an aluminum tube (1), a heating core (2) installed in the aluminum tube (1), and heat dissipation fins (3) installed on the flat surface of the aluminum tube (1), characterized in that: The flat surface of the aluminum tube (1) has side edges (4) protruding from the flat surface. The cross-section of the side edges (4) is a C shape with an opening facing inwards, and a groove (6) is formed on the inner side thereof; the two side edges (4) and the flat surface together form a mounting groove (5) for the heat dissipation fin (3). An adhesive is applied in the mounting groove (5), and the heat dissipation fin (3) is adhered to the mounting groove (5) through the adhesive; after installation, the side edges (4) tightly press against both sides of the heat dissipation fin (3).

2. The adhesive-coated, press-fit corrugated belt PTC heating assembly according to claim 1, characterized in that: The height of the side edge (4) is 1 - 5 mm.

3. The adhesive-coated, press-fitted corrugated belt PTC heating assembly according to claim 2, characterized in that: The top of the side edge (4) has a sharp corner facing inwards.

4. The adhesive-coated, press-fit corrugated belt PTC heating assembly according to any one of claims 1, 2, or 3, characterized in that: The adhesive is silica gel.

5. The adhesive-coated, press-fitted corrugated belt PTC heating assembly according to claim 4, characterized in that: The heat dissipation fin (3) has a corrugated structure, and after stamping, a structure with a top surface in the shape of multiple juxtaposed "艹" characters is formed.

6. The adhesive-coated, press-fit corrugated belt PTC heating assembly according to claim 4, characterized in that: The heat dissipation fin (3) has a corrugated structure, and after stamping, a structure with a top surface in the shape of multiple juxtaposed staggered and起伏 rectangles is formed.

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