CN216115504U - Automobile all-aluminum air heater - Google Patents

Abstract

The utility model relates to an all-aluminum automobile air heater, which comprises a water chamber, a bent pipe and a core body, wherein the water chamber is buckled on the core body, the bent pipe is arranged on the water chamber, the core body comprises a radiating pipe and a main sheet, the radiating pipe is connected with the main sheet, the main sheet is arranged on the water chamber, and flaring openings are formed in two ends of the radiating pipe. Compared with the prior art, the utility model has the advantages of high brazing qualification rate, low rework rate and the like.

Description

Automobile all-aluminum air heater

Technical Field

The utility model relates to the technical field of automobile air heaters, in particular to an all-aluminum automobile air heater.

Background

Along with the improvement of living standard of people, the requirements on automobiles are higher and higher, and the requirements on cooling and heating of the automobiles are also higher and higher. The automobile air heater is used as an important key component of an automobile air heating system, and the requirements on the manufacturing technology of the automobile air heater are higher and higher.

At present, the structure of the air heater in the prior art is shown in fig. 1 and fig. 2, and has the following defects:

1. after welding, the heat dissipation pipe has more leakage phenomena, which affects the qualified rate of brazing;

2. the diagonal size of the welded product is large, so that the installation and the appearance of the product are influenced;

3. the rejection rate reaches seven thousandth, which causes unnecessary material loss;

4. the rework rate is ten per thousand, which causes unnecessary labor loss.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide the automobile all-aluminum air heater with high brazing qualification rate and low rework rate.

The purpose of the utility model can be realized by the following technical scheme:

an automobile all-aluminum air heater comprises a water chamber, a bent pipe and a core body; the water chamber is buckled and pressed on the core body; the bent pipe is arranged on the water chamber; the core body comprises a radiating pipe and a main sheet; the radiating pipe is connected with the main sheet, the main sheet is installed on the water chamber, and flaring ports are arranged at two ends of the radiating pipe.

Preferably, the water chamber is provided with an inserting sheet.

Preferably, the core further comprises side plates; the number of the side plates is two, the two side plates are both arranged in parallel with the radiating pipe, and two ends of each side plate are respectively connected with the main sheet; the side plates are arranged at two ends of the air heater, and the radiating pipe is arranged between the two side plates.

More preferably, the side plate is provided with a sponge strip.

More preferably, the sponge strip is attached to the side plate.

Preferably, the core is provided with a heat dissipation belt; the heat dissipation belt is connected with the water chamber.

More preferably, the radiating strips and the radiating pipes are alternately arranged.

Preferably, the water chamber is buckled on the core body.

Preferably, the number of the bent pipes is two, and the two bent pipes are respectively welded at the water inlet and the water outlet of the water chamber.

Preferably, the core is secured by brazing.

Compared with the prior art, the utility model has the following beneficial effects:

firstly, the brazing qualification rate is high: after the radiating pipe of the core body is flared before brazing, the automobile all-aluminum air heater eliminates the assembly gap between the main sheet and the radiating pipe, increases the contact surface between the main sheet and the radiating pipe, reduces the leakage phenomenon of the welded radiating pipe, improves the brazing qualification rate, and reduces the rejection rate from seven thousandths.

Secondly, the rework rate is low: before the automobile all-aluminum air heater is brazed, the first radiating pipes at two ends of the core body are coated with the soldering paste, the melting point of the soldering paste is low during brazing, four corners of the soldering paste are firstly solidified, and the product is prevented from being deformed by thermal stress during brazing, so that the diagonal line of the core body is ensured to be in a controllable range, and the rework rate is reduced to zero from ten per thousand.

Drawings

FIG. 1 is a schematic diagram of a prior art air heater;

FIG. 2 is a schematic diagram of a prior art heat pipe;

FIG. 3 is a schematic view of the structure of the air heater of the present invention;

fig. 4 is a schematic structural view of the warm air duct of the present invention.

The reference numbers in the figures indicate:

1. hydroecium, 2, return bend, 3, inserted sheet, 4, cooling tube, 5, heat dissipation area, 6, main leaf, 7, curb plate, 8, sponge strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

The utility model provides an all aluminium fan heater of car, its structure is shown in fig. 3, and including hydroecium 1, return bend 2 and core, hydroecium 1 withholds on the core, and return bend 2 is installed on hydroecium 1, and the core includes cooling tube 4 and main leaf 6, and cooling tube 4 links to each other with main leaf 6, and the both ends of cooling tube 4 all are equipped with the flaring, are equipped with inserted sheet 3 in the hydroecium 1.

The core still includes curb plate 7, and the quantity of curb plate 7 is two, and two curb plates all with 4 parallel arrangement of cooling tube, the both ends of curb plate 7 link to each other with main leaf 6 respectively, and curb plate 7 sets up the both ends at the air heater, and cooling tube 4 sets up between two curb plates 7. The side plate 7 is attached with a sponge strip 8.

The core still is equipped with heat dissipation area 5, and heat dissipation area 5 links to each other with hydroecium 1, and heat dissipation area 5 sets up with cooling tube 4 in turn in this embodiment.

The assembling method of the automobile air heater comprises the following steps:

step 1: as shown in fig. 4, flaring is opened at two ends of the radiating pipe, and the main sheet, the side plate, the radiating pipe and the radiating strip are assembled and then bundled together to form a core body;

the purpose of flaring the radiating pipe is as follows: in order to eliminate the assembly gap between the main sheet and the radiating pipe, the contact surface between the main sheet and the radiating pipe is increased, the leakage phenomenon of the radiating pipe after welding is reduced, and the brazing qualification rate is improved. Practice proves that the rejection rate of the product is reduced to zero from seven per thousand due to the leakage of the heat dissipation pipe.

Step 2: the water chamber with the inserted sheet is buckled and pressed on the core body;

and step 3: as shown in fig. 3, solder paste is respectively applied to both ends of two heat dissipation pipes at both ends of the core body, and then soldering is performed to couple the heat dissipation pipes and the water chamber together by soldering;

the purpose of smearing the soldering paste at four corners is: when brazing, four corners are firstly solidified, so that the deformation of a product caused by thermal stress during brazing is avoided, and the diagonal is ensured to be in a controllable range. Practice proves that the product has large diagonal line, so that the installation and the product appearance are influenced, and the rework rate is reduced to zero from ten per thousand.

And 4, step 4: the two bent pipes are respectively welded at the water inlet and the water outlet of the water chamber;

and 5: and pasting a sponge strip to finish the assembly of the air heater.

The economic benefits before and after improvement are compared as follows:

assume a yield of 6 thousands of stations per year, 103 dollars per station.

Before the improvement:

1. the rework working hour cost is 0.3 yuan/station 60000 yuan to 18000 yuan due to the larger diagonal line;

2. 450 pieces of products are scrapped due to the leakage of the radiating pipe.

After the improvement:

1. the diagonal line is in the tolerance range, the installation is not influenced, the appearance quality is qualified, the reworking is not needed, and the reworking working time cost is 0 yuan;

2. the radiating pipe has no leakage, the brazing is qualified, and the rejection rate is zero.

The quality of the improved product is greatly improved, the cost is greatly reduced, and the win-win situation is realized for the client enterprises.

While the utility model has been described with reference to specific embodiments, the utility model is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the utility model. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The automobile all-aluminum air heater is characterized by comprising a water chamber (1), a bent pipe (2) and a core body; the water chamber (1) is buckled and pressed on the core body; the bent pipe (2) is arranged on the water chamber (1); the core body comprises a radiating pipe (4) and a main sheet (6); the radiating pipe (4) is connected with the main sheet (6), the main sheet (6) is installed on the water chamber (1), and flaring openings are formed in two ends of the radiating pipe (4).

2. The all-aluminum air heater for the automobile according to claim 1, wherein the water chamber (1) is provided with an inserting sheet (3).

3. The all-aluminum automotive air heater according to claim 1, characterized in that said core further comprises side plates (7); the number of the side plates (7) is two, the two side plates are both arranged in parallel with the radiating pipe (4), and two ends of each side plate (7) are respectively connected with the main sheet (6); the side plates (7) are arranged at two ends of the air heater, and the radiating pipe (4) is arranged between the two side plates (7).

4. The all-aluminum air heater for the automobile according to claim 3, wherein the side plate (7) is provided with a sponge strip (8).

5. The all-aluminum air heater for the automobile according to claim 4, wherein the sponge strip (8) is attached to the side plate (7).

6. The all-aluminum air heater for the automobile as claimed in claim 1, wherein the core is provided with a heat dissipating band (5); the heat dissipation belt (5) is connected with the water chamber (1).

7. The all-aluminum air heater for the automobile as claimed in claim 6, wherein the radiating strips (5) and the radiating pipes (4) are alternately arranged.

8. The all-aluminum air heater for the automobile according to claim 1, wherein the water chamber (1) is buckled on the core.

9. The all-aluminum air heater for the automobile according to claim 1, wherein the number of the bent pipes (2) is two, and the two bent pipes are respectively welded at the water inlet and the water outlet of the water chamber (1).

10. The all-aluminum automotive air heater according to claim 1, wherein the core is fixed by brazing.

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