Overall positioning flaring device for automobile air heater

Abstract

The utility model relates to an integral positioning flaring device for an automobile air heater, the automobile air heater comprises a core body, the core body comprises a radiating pipe and a main plate, the radiating pipe is located in a concave area of the main plate, one side, facing the core body, of the integral positioning flaring device is provided with positioning flaring teeth, and the positioning flaring teeth are located in the concave area of the main plate. The positioning flaring teeth extend into the middle of the radiating tube in the concave area, and the central axis of the positioning flaring teeth is aligned with the central axis of the radiating tube and the central axis of the concave area; the positioning flaring teeth gradually extend into the heat dissipation pipes, the distance between the heat dissipation pipes is gradually increased till the maximum distance is reached, meanwhile, the positions of the heat dissipation pipes in the concave area of the main plate are not changed, and positioning and flaring of the heat dissipation pipes are achieved. According to the utility model, the radiating pipe is prevented from falling off easily; repair welding after brazing is effectively prevented and relieved, and the one-time brazing quality is improved; after the core body is assembled, the radiating pipe has consistent extension length, and the size deviation of a product is reduced; and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to an automobile air heater, in particular to an integral positioning and expanding device for the automobile air heater. Background Art

[0002] As people's living standards improve, their requirements for cars, including car heating and cooling, are getting higher and higher. As an important key component of the car heating system, the requirements for its manufacturing technology are also getting higher and higher.

[0003] The utility model patent application number CN202110734869.9 discloses an all-aluminum automotive air heater and its assembly method, wherein the air heater includes a water chamber, an elbow, and a core. The water chamber is buckled onto the core, and the elbow is mounted on the water chamber. The core includes a heat pipe and a main plate. The heat pipe is connected to the main plate, and the main plate is mounted on the water chamber. Both ends of the heat pipe are provided with flares. The assembly method of the air heater includes: assembling the main plate, side panels, heat pipes, and heat dissipation belts, and then bundling them together to form the core; buckling the water chamber with the inserts onto the core; connecting the core and water chamber together by brazing; welding the elbow; and attaching the sponge strip to complete the assembly of the air heater.

[0004] The core assembly of the car heater is composed of manual assembly, which has problems such as easy cold welding after brazing, unstable welding quality, and high production cost. Utility Model Content

[0005] The purpose of the present utility model is to provide an integral positioning and expanding device for a car heater in order to overcome the defects of the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] An integral positioning and flaring device for an automobile heater, the automobile heater comprising a core, the core comprising a heat dissipation pipe and a mainboard, the heat dissipation pipe being located within a recessed area of the mainboard, the integral positioning and flaring device being provided with positioning flaring teeth on a side facing the core, the positioning flaring teeth extending into the middle of the heat dissipation pipe within the recessed area, the central axis of the positioning flaring teeth being aligned with the central axis of the heat dissipation pipe and the central axis of the recessed area;

[0008] Preferably, the positioning and expanding teeth gradually extend into the heat dissipation pipes, and the distance between the heat dissipation pipes gradually increases until the maximum distance is reached. At the same time, the position of the heat dissipation pipes in the recessed area of the mainboard remains unchanged, thereby achieving positioning and expanding of the heat dissipation pipes.

[0009] Preferably, the integral positioning and expanding devices are used in pairs.

[0010] Preferably, when the positioning flaring teeth extend into the heat dissipation tube to half the tooth height, the heat dissipation tubes on both sides of the positioning flaring teeth begin to bend, and the heat dissipation tubes on both sides of the positioning flaring teeth reach the maximum distance.

[0011] Preferably, the end of the heat dissipation pipe is in close contact with the tooth root of the positioning expansion tooth.

[0012] Preferably, the core further comprises a heat dissipation belt, and every two heat dissipation tubes are alternately connected via the heat dissipation belt.

[0013] Preferably, every two heat dissipation pipes alternately connected by heat dissipation belts are placed on both sides of the protruding area of the mainboard, and the concave area of the mainboard has two heat dissipation pipes.

[0014] Preferably, the core further includes side plates, and the heat dissipation pipes and the side plates are alternately connected via heat dissipation belts.

[0015] Preferably, the side panels are located outside the core body, and the side panels are separately placed in the recessed area of the main board.

[0016] Preferably, the number of the side panels is 2.

[0017] Preferably, the end of the mainboard cooperates with the end of the integral positioning and expanding device to achieve the positioning of the mainboard.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. Prevent the heat dissipation pipe from falling off easily.

[0020] 2. The mainboard and the heat pipe are placed at the best welding surface, the weld has good formability, the process defects are significantly reduced, and the post-brazing repair welding is effectively prevented and reduced, thereby improving the quality of the first-time brazing.

[0021] 3. After the core is assembled, the extended length of the heat dissipation pipe is consistent, which reduces the dimensional deviation of the product, improves the accuracy, positioning and integrity of the parts, and ensures that the current status and size of the product meet the requirements of the drawing.

[0022] 4. The products after brazing are beautiful and neat.

[0023] 5. Simple structure, small size, light weight and easy to install and unload.

[0024] 6. Production costs are reduced.

[0025] 7. The core body is pressed to achieve better airtightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the overall positioning and expanding device of the utility model;

[0027] Figure 2This is a partial structural diagram of the overall positioning and expanding device of the utility model;

[0028] Figure 3 This is a schematic diagram of the effect before use of the utility model;

[0029] Figure 4 This is a schematic diagram of the effect after use of the utility model.

[0030] 1. Heat pipe; 2. Heat dissipation belt; 3. Main board; 4. Positioning flared teeth; 5. Side panel; 6. Recessed area; 7. Protruding area. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0032] The car heater core assembly is composed of manual assembly, which may cause the following problems:

[0033] 1. The existing process of improperly assembling the heat pipe and the mainboard makes it easy for the pipe to fall off and the gap is too large to be easily welded.

[0034] 2. The existing process lacks reliable positioning and clamping, which increases the dimensional deviation of the product.

[0035] 3. The repair welding rate of products produced by existing technology has increased significantly.

[0036] 4. Products produced by existing processes have an obviously unsightly appearance after repair welding and have a high scrap rate.

[0037] 5. The average first-time qualified rate of existing products is 87%, and the repair welding rate is 13%.

[0038] The utility model uses the integral positioning expansion device, which is used in pairs, to fix the core well, facilitate welding, and improve welding quality.

[0039] Example 1

[0040] Overall positioning expansion device such as Figure 1 、 Figure 2As shown, an integral positioning and flaring device for an automobile air heater comprises a core, the core comprising a heat pipe 1 and a main board 3, the heat pipe 1 being located within a recessed area 6 of the main board 3, and positioning and flaring teeth 4 being provided on a side of the integral positioning and flaring device facing the core. The positioning and flaring teeth 4 extend into the middle of the heat pipe 1 within the recessed area 6, with the central axis of the positioning and flaring teeth 4 being aligned with the central axis of the heat pipe 1 and the central axis of the recessed area 6;

[0041] The positioning and expanding teeth 4 gradually extend into the heat pipe 1, and the spacing between the heat pipes 1 gradually increases until it reaches the maximum spacing. At the same time, the position of the heat pipe 1 in the recessed area of the mainboard 3 remains unchanged, thereby achieving positioning and expanding of the heat pipe 1.

[0042] The overall positioning and expanding devices are used in pairs, and the placement position is adjusted according to the length of the core body.

[0043] In this embodiment, the integral positioning and expanding devices are used in pairs. The integral positioning and expanding devices are pre-placed according to the length of the core body, and the core body is placed between the two integral positioning and expanding devices.

[0044] When the positioning flaring teeth 4 extend into half the tooth height of the heat pipe 1 , the heat pipes 1 on both sides of the positioning flaring teeth 4 begin to bend, and the heat pipes 1 on both sides of the positioning flaring teeth 4 reach the maximum distance.

[0045] The end of the heat dissipation pipe 1 is in close contact with the tooth root of the positioning flared tooth 4 .

[0046] In this embodiment, after the maximum spacing between the heat pipes 1 on both sides of the positioning flaring teeth 4 is reached, the spacing will not increase, and the ends of the heat pipes 1 are bent along the tooth roots; at the same time, the central axis of the positioning flaring teeth 4 is aligned with the central axis of the heat pipe 1 and the central axis of the recessed area 6, and the position of the heat pipe 1 on the main board 3 is inconvenient, so that the heat pipe 1 is in the best welding surface, which facilitates welding.

[0047] The core further includes a heat dissipation belt 2 , and every two heat dissipation tubes 1 are alternately connected through the heat dissipation belt 2 .

[0048] The heat dissipation pipes 1 alternately connected by the heat dissipation belts 2 are placed on both sides of the protruding area 7 of the main board 3 , and the concave area 6 of the main board 3 has two heat dissipation pipes 1 .

[0049] In this embodiment, at most two heat pipes 1 are placed in the same recessed area 6 for easy positioning, and the mainboard 3 located in the protruding area 7 serves as a reinforcing rib.

[0050] The core further comprises side plates 5, and the heat dissipation pipes 1 and the side plates 5 are alternately connected via heat dissipation belts 2, which can further enhance heat dissipation.

[0051] The side panels 5 are located outside the core body, and are placed separately in the recessed area 6 of the main board 3 .

[0052] The number of the side panels 5 is two.

[0053] In this embodiment, the outermost sides of the core are two side panels 5 for protecting the heat dissipation pipes 1 in the core.

[0054] The end of the main board 3 cooperates with the end of the integral positioning and expanding device to achieve the positioning of the main board 3.

[0055] In this embodiment, the central axis of the positioning flaring teeth 4 is aligned with the central axis of the heat pipe 1 that is not alternately connected to the heat dissipation belt 2 and the central axis of the recessed area 6; during the clamping and fixing process, the positioning flaring teeth 4 gradually extend into the heat pipe 1, and the spacing between the heat pipes 1 gradually increases. When the end of the heat pipe 1 is located at half the tooth height of the positioning flaring teeth 4, the spacing between the heat pipes 1 remains unchanged. Subsequently, the end of the heat pipe 1 is bent against the tooth root of the positioning flaring teeth 4, completing the overall positioning and flaring.

[0056] Effects such as Figure 3 、 Figure 4 As shown, the paired integral positioning and flaring device secures and clamps the core's heat pipes 1 and mainboard 3, ensuring accurate and reliable assembly, improved core integrity and flatness, and enhanced crimping airtightness. This prevents the heat pipes from easily falling off, ensuring consistent extended lengths after core assembly. This ensures the mainboard and heat pipes are positioned at the optimal welding surface, resulting in excellent weld formability. This reduces the need for re-welding and improves the quality of first-pass brazing, reducing the re-welding rate from 13% to 1.3% and increasing the quality of first-pass brazing from 87% to 98.7%. The heat pipes are uniform in length with minimal dimensional deviation, resulting in an aesthetically pleasing, well-formed product after brazing. Production costs have been reduced, with labor costs per unit dropping from 10.17 yuan to 9.05 yuan. Based on an annual production capacity of 20,000 heaters, this represents an estimated savings of 22,400 yuan.

[0057] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. An integral positioning and expanding device for a car heater, the car heater comprising a core, the core comprising a heat dissipation pipe (1) and a main board (3), the heat dissipation pipe (1) being located in a recessed area (6) of the main board (3), characterized in that: The integral positioning flaring device is provided with positioning flaring teeth (4) on a side facing the core body, the positioning flaring teeth (4) extending into the middle of the heat dissipation pipe (1) in the recessed area (6), and the central axis of the positioning flaring teeth (4) is aligned with the central axis of the heat dissipation pipe (1) and the central axis of the recessed area (6); The positioning and expanding teeth (4) gradually extend into the heat dissipation tube (1), and the spacing between the heat dissipation tubes (1) gradually increases until a maximum spacing is reached. At the same time, the position of the heat dissipation tube (1) in the recessed area (6) of the main board (3) remains unchanged, thereby achieving positioning and expanding of the heat dissipation tube (1).

2. The integral positioning and expanding device for a car heater according to claim 1, characterized in that: The integral positioning and expanding devices are used in pairs.

3. The integral positioning and expanding device for a car heater according to claim 1, characterized in that: When the positioning flaring teeth (4) extend into half the tooth height of the heat dissipation tube (1), the heat dissipation tubes (1) on both sides of the positioning flaring teeth (4) begin to bend, and the heat dissipation tubes (1) on both sides of the positioning flaring teeth (4) reach a maximum distance.

4. The integral positioning and expanding device for a car heater according to claim 3, characterized in that: The end of the heat dissipation pipe (1) is in close contact with the tooth root of the positioning expansion tooth (4).

5. The integral positioning and expanding device for a car heater according to claim 1, characterized in that: The core further comprises a heat dissipation belt (2), and every two heat dissipation tubes (1) are alternately connected via the heat dissipation belt (2).

6. The integral positioning and expanding device for a car heater according to claim 5, characterized in that: The heat dissipation pipes (1) alternately connected by heat dissipation belts (2) are placed on both sides of the protruding area (7) of the main board (3), and the recessed area (6) of the main board (3) has two heat dissipation pipes (1).

7. The integral positioning and expanding device for a car heater according to claim 6, characterized in that: The core further comprises side plates (5), and the heat dissipation pipes (1) and the side plates (5) are alternately connected via heat dissipation belts (2).

8. The integral positioning and expanding device for a car heater according to claim 7, characterized in that: The side panels (5) are located outside the core body, and the side panels (5) are individually placed in the recessed area (6) of the main panel (3).

9. The integral positioning and expanding device for a car heater according to claim 8, characterized in that: The number of the side panels (5) is 2.

10. The integral positioning and expanding device for a car heater according to claim 9, characterized in that: The end of the main board (3) cooperates with the end of the integral positioning expansion device to achieve the positioning of the main board (3).

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