Improved automobile air heater

Abstract

The invention relates to an improved automobile air heater. The improved automobile air heater comprises a water chamber, a bent pipe and a resistor insertion sheet, the water chamber comprises a water inlet chamber and a water outlet chamber; the bent pipe is connected with the water chamber; the air heater further comprises a heat dissipation core body; one end of the core body is connected withthe water inlet chamber, and the other end is connected with the water outlet chamber; the heat dissipation core body comprises a heat dissipation pipes, a heat dissipation belt, two main pieces andtwo side plates, the two main pieces are connected with the water inlet chamber and the water outlet chamber respectively, the two side plates are installed between the two main pieces, the heat dissipation pipes are installed between the two side plates, the two ends of each heat dissipation pipe are connected with the two main pieces respectively, and the heat dissipation belt is installed between every two adjacent heat dissipation pipes. Compared with the prior art, the improved automobile air heater has the advantages of being high in brazing percent of pass, capable of preventing brazingleakage, capable of fixing the core height, high in product quality, low in rework rate and the like.

Description

technical field [0001] The invention relates to the technical field of automobile air heater manufacture, in particular to an improved automobile air heater. Background technique [0002] At present, with the improvement of people's living standards, cars have spread to ordinary families. As an important key component of automobiles, automobile air heaters have received high attention in their manufacturing technology. Existing automobile air heater is made up of water chamber, bent pipe, resistance inserting sheet, radiating pipe, radiating belt, main piece, side plate. [0003] At present, the structure of the main plate and the side plate used in the car air heater is as follows: figure 1 , figure 2 with image 3 As shown, the use of the above structure will have the following problems: [0004] 1. When the end teeth of the side plate are connected with the through holes at the end of the main plate, gaps are easy to appear, which affects the qualified rate of brazi...

AI Technical Summary

Problems solved by technology

[0004] 1. When the end teeth of the side plate are connected with the through holes at the end of the main plate, gaps are easy to appear, which affects the qualified rate of brazing;

[0005] 2. The welding rate is not high at the assembly part of the main piece and the heat dissipation pipe;

[0006] 3. When the end teeth of the side plate are connected with the through hole at the end of the main plate, it is easy to move left and right, which affects the core height;

[0007] 4. According to statistics, the scrap rate of this type of air heater is 7 / 1000 due to the gap between the end teeth of the side plate and the through hole at the end of the main plate;

[0008] 5. According to statistics, 10% of the product rework of this type of air heater is due to the side plate end teeth moving left and right when connecting with the through hole at the end of the main piece, which affects the core height.

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