CN111762002A - Warm air water tank for automobile - Google Patents

Abstract

The invention discloses an automobile warm air water tank, which comprises water chambers at two ends and a middle heat exchange body, wherein the middle heat exchange body consists of flat pipes and fins which are brazed and fixed with each other, the fins are arranged between the flat pipes, and the fins have wave-shaped folding structures in the length direction, and are characterized in that: the width of the upper end part and the lower end part of each fin is larger than that of the middle part of each fin, and the widening positions of the upper end part and the lower end part of each fin are matched with the circular arc transition of the flat tube body part. The invention has the advantages of preventing the strip from falling off, preventing the collision, and having good flatness and smoothness of the end faces of the fins, ensures reliable heat dissipation, improves the heat exchange effect of the warm air water tank, and reduces the manufacturing cost in the application occasions of special vehicles.

Description

Warm air water tank for automobile

Technical Field

The invention relates to a component of a vehicle heat exchange system, in particular to an automobile warm air water tank.

Background

The automobile warm air water tank is used for an air conditioning system of an automobile, and mainly has the functions of improving the supply of warm air in the automobile, and the warm air water tank can timely enter a working state after the automobile starts an air conditioner in winter with lower temperature. In the automobile warm air water tank in the prior art, the width of the fins is consistent from top to bottom, and the fins are easy to slip out when being assembled between flat pipes, so that the belt falling condition is caused; in addition, because the thickness of the fin is very thin (generally about 0.06-0.08 mm), the upper end and the lower end of the fin are difficult to keep flat after being assembled, the smoothness is not enough, and the fin is easy to be crushed flat, so that the wind resistance of the intermediate heat exchange body of the hot air water tank during working is increased after the fin is crushed flat, and the heat exchange effect is poor; in addition, because the strength of the fins is not enough, the supporting force for the flat tubes is also poor, when the warm air water tank is applied to special vehicles such as engineering vehicles, refrigerator cars, refrigerated trucks and the like, the fins are required to be thick due to the fact that the pressure passing through the flat tubes is too large in the moment, and therefore the manufacturing cost is too high.

Disclosure of Invention

In view of the defects of the background art, the invention aims to provide the automobile warm air water tank which has the advantages of preventing the strip from falling, preventing the strip from collision, improving the flatness and smoothness of the end surfaces of the fins, ensuring reliable heat dissipation, improving the heat exchange effect and reducing the manufacturing cost in special vehicle application occasions.

The invention is implemented by the following technical scheme:

automobile heater water tank, including both ends hydroecium and middle heat transfer body, the middle heat transfer body comprises flat pipe and fin that mutual brazing is fixed, and the fin is arranged in between the flat pipe, and the fin has wave folding structure, its characterized in that on length direction: the width of the upper end part and the lower end part of each fin is larger than that of the middle part of each fin, and the widening positions of the upper end part and the lower end part of each fin are matched with the circular arc transition of the flat tube body part.

According to the automobile warm air water tank in the technical scheme, the widths of the upper end part and the lower end part of the fin are larger than the width of the middle part of the fin, so that the fin can be prevented from sliding out when being assembled between the flat pipes, and the condition of belt falling is prevented; in addition, the thickness of the upper end part and the lower end part of the fin is thickened (twice that of the prior art), so that the upper end part and the lower end part of the fin are easy to keep flat after being assembled, the smoothness of the appearance is also good, the fin is also difficult to be crushed, the wind resistance of the middle heat exchange body of the hot air water tank is ensured not to be increased during working, and the heat exchange effect is improved; in addition, because the strength of the end part of the fin is enhanced, the supporting force to the flat pipe is also increased, the hot air water tank can better adapt to the overlarge instantaneous pressure passing through the flat pipe, the thickness of the fin is not required to be increased, the manufacturing cost is not required to be increased, and the hot air water tank is suitable for being applied to special vehicles such as engineering vehicles, refrigerator cars, refrigerated trucks and the like.

Preferably, the upper and lower fin edges of the fin are folded inwards to form a double-layer folded structure of the upper and lower end parts of the fin, and the double-layer folded structure forms the width of the upper and lower end parts of the fin to be larger than the width of the middle part of the fin when the fin is subjected to wave forming. But above-mentioned design simple structure realizes that the upper and lower tip width of fin is greater than the width of fin mid portion, and then realizes the above-mentioned technological effect of warm braw water tank to the preparation is convenient, the cost of manufacture also can not change basically.

Preferably, each wave-shaped folding of the fin is provided with a plurality of small windows in the shape of shutters in the height direction, the small windows are provided with an upper group and a lower group, and the opening direction of the window of the upper group is opposite to that of the window of the lower group. Through the design, the arrangement of the small windows with opposite directions is arranged on the upper and lower groups of windows on each wave-shaped folding part of the fin, so that air entering the flat pipes during the working of the warm air water tank can be uniformly distributed and circulated no matter which direction the air enters, and the heat exchange effect is improved.

Drawings

Fig. 1 is a view showing an outline structure of a warm air water tank for an automobile according to the present invention,

figure 2 is a view from the direction a of figure 1,

fig. 3 is a view C-C of fig. 2.

Detailed Description

As shown in fig. 1, the automobile warm air water tank of the invention comprises water chambers 1 and 3 at two ends and an intermediate heat exchange body 2, wherein the intermediate heat exchange body 2 consists of flat tubes 5 and fins 4 which are mutually brazed and fixed, the fins 4 are arranged between the flat tubes 5, and the fins 4 have a wave-shaped folding structure in the length direction; as shown in fig. 2 and 3, each wave-shaped folding of the fin 4 is provided with a plurality of small windows 6 in the shape of shutters in the height direction, the small windows 6 are provided with an upper group and a lower group, and the opening direction of the window of the upper group is opposite to that of the window of the lower group; as shown in fig. 2, the width of the upper end and the lower end of the fin 4 is greater than the width of the middle part of the fin, the widening position of the upper end and the lower end of the fin 4 matches the arc transition of the body part of the flat tube 5, and the specific structure is as follows: the upper fin edge 41 and the lower fin edge 41 of the fin 4 are folded inwards to form a double-layer folding structure of the upper end part and the lower end part of the fin 4, and the double-layer folding structure naturally forms that the width of the upper end part and the lower end part of the fin is larger than that of the middle part of the fin when the fin 4 is subjected to wave forming.

The width of the upper end part and the lower end part of the fin is larger than the width of the middle part of the fin, and the technical scheme can be adopted as follows: stamping bulges are arranged at the wave-shaped folding positions of the upper fin edge and the lower fin edge of the fin, and the stamping bulges can naturally form that the width of the upper end part and the lower end part of the fin is larger than that of the middle part of the fin when the fin is subjected to wave-shaped forming.

Claims (3)

1. Automobile heater water tank, including both ends hydroecium and middle heat transfer body, the middle heat transfer body comprises flat pipe and fin that mutual brazing is fixed, and the fin is arranged in between the flat pipe, and the fin has wave folding structure, its characterized in that on length direction: the width of the upper end part and the lower end part of each fin is larger than that of the middle part of each fin, and the widening positions of the upper end part and the lower end part of each fin are matched with the circular arc transition of the flat tube body part.

2. The warm air water tank for the automobile according to claim 1, wherein: the upper fin edge and the lower fin edge of the fin are folded inwards to form a double-layer folding structure of the upper end portion and the lower end portion of the fin, and the width of the upper end portion and the width of the lower end portion of the fin formed by the double-layer folding structure are larger than the width of the middle portion of the fin when the fin is subjected to wave forming.

3. The warm air water tank for the automobile according to claims 1 and 2, wherein: each wave-shaped folding of the fin is provided with a plurality of small windows in the shape of shutters in the height direction, the small windows are provided with an upper group and a lower group, and the opening direction of the window in the upper group is opposite to that of the window in the lower group.

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