Novel tube-fin type heat exchanger

Abstract

The invention discloses a novel tube-fin type heat exchanger, which comprises a water inlet chamber, a water outlet chamber and a core. The core consists of an upper composite plate, a lower composite plate, fins and sealing strips, fin layers and sealing strip layers are fixedly connected between the upper composite plate and the lower composite plate, the fin layers consist of the fins, the sealing strip layers consists of the sealing strips, long flat tubes which are arranged side by side are fixedly connected onto partition plates to form the fin layers, grooves which are arrayed parallelly are distributed on two side surfaces of each sealing strip, the corresponding long flat tubes are placed in spaces formed by the corresponding grooves of each two corresponding sealing strips, and the corresponding fins and the corresponding sealing strips are integrally brazed in a stacked manner. Each fin layer consists of 2 to 5 long flat tubes which are arranged side by side. A chamfer of the bottom of each groove is an arc. The novel tube-fin type heat exchanger has the advantages of high strength and low manufacturing cost.

Description

[0001] technical field [0002] The invention relates to the field of auto parts, in particular to a tube heat exchanger. Background technique [0003] At present, heat exchangers have been widely used in aviation, automobiles, diesel locomotives, engineering machinery, air compression, air separation, petrochemical, air conditioning, refrigeration and other fields. like figure 1 As shown, the core unit of the common plate-fin heat exchanger has figure 1 It consists of upper and lower composite plates, left and right seals and fins in the middle. By changing the channel direction of adjacent layers and continuously stacking them, a cross-flow plate-fin heat exchanger is formed after brazing. like figure 2 As shown, the white arrow indicates that the part is the outer fin channel, and the black arrow indicates that the part is the inner fin channel. Existing tube-and-belt heat exchangers are usually used in automobile water radiators, and some heat exchangers are also ca...

AI Technical Summary

Problems solved by technology

Its disadvantage is that the strength is not high, and it needs to manufacture the main board mold, so it is not suitable for small batch production

In order to maintain the stability of the overall structure, the tube-belt heat exchanger requires two symmetrical main plates at both ends of the flat tube to fix the structure. Due to the limitation of the size of the tube, the main plate is often thin, which leads to the brazing of the flat tube and the plate. When the contact area is small, the overall strength is not high. When it is used for a long time or the use environment is relatively harsh, problems such as desoldering, structural deformation, and damage to the radiator will often occur.

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