Heat exchanger

Abstract

The invention provides a heat exchanger, which is provided with a fin member, so that the thermal conductivity between the fin member and the main body of the serpentine tube is improved, and a heat exchanger with excellent heat exchange performance can be obtained cheaply through simple manufacturing technology and process . In addition, a compact heat exchanger can be formed, and it can be installed in a narrow space, etc., and a product with a high degree of freedom of arrangement can be obtained. The fin member (5) has a plurality of fins (4) arranged in parallel, and a plurality of engagement grooves (8) are provided on opposite end surfaces (6) (7) of the fin member (5). Separate the opposing intervals (16), arrange the plurality of straight pipe parts (2) in parallel in the engaging groove (8) for disposing the fin member (5), and use the bent part (3 ) connect the plurality of straight pipe parts (2), separate the insertion gap (17) of the fin member (5), arrange a pair of serpentine parts (11), (12) opposite to each other, pass through the connecting pipe (13), One serpentine part (11) and the other serpentine part (12) are connected to form a serpentine pipe main body (1). In the insertion gap (17) between one meandering part (11) and the other meandering part (12) of the meandering pipe main body (1), a fin member (5) is inserted and arranged, and the fin member (5) In the engagement groove (8) of one end surface (6) of ), the straight pipe portion (2) of one serpentine part (11) is arranged, and in the engagement groove (8) of the other end surface (7), A straight pipe part (2) is arranged to fix the other side of the meandering part (12).

Description

field of invention [0001] The present invention relates to fluid cooling pipes such as fuel pipes and oil pipes for automobiles and general industrial use, EGR gas cooling devices, air conditioners for adjusting the temperature and humidity of living spaces, and other heat exchangers. , a heat exchanger with excellent heat exchange performance can be obtained at low cost. Background technique [0002] So far, there are fluid cooling pipes such as fuel pipes and oil pipes for automobiles and general industries, EGR gas cooling devices, air conditioners for adjusting the temperature and humidity of living spaces, and other heat exchangers. For example, as shown in Patent Document 1, on the fuel pipe for automobiles, a fuel cooler having tanks such as cooling water, refrigerant for automobile air conditioners, or other refrigerant liquids is connected, and oil materials, etc. flowing in the fuel pipes are connected. Allow to cool. However, on diesel engines, etc., since the f...

AI Technical Summary

Problems solved by technology

[0011] However, in the pipe body of Patent Document 2 or 3, due to the presence of spiral or radial fin members, bending with a small radius of curvature is difficult during bending, and the volume increases, making it difficult to arrange under a narrow floor. or the back of the device, etc.

In addition, in Patent Document 4, there is a problem with the strength of each thin-plate fin. When forming the insertion through hole or when the pipe body is inserted through, the thin-plate fins are likely to be deformed or damaged, and it is necessary to be careful and labor-intensive.

In addition, using the mode of inserting the through-pipe main body into the thin-plate fin, it is quite difficult to bend and insert a single pipe main body. The U-shaped air pipe connects the ends of adjacent straight pipes, and the connection between the straight pipe and the U-shaped air pipe is fixed by welding or brazing.

However, due to thin plate fins or a three-dimensional shape, work such as welding or brazing is not easy, and it is also difficult to perform leak checks on the connection.

In addition, in the fin member formed by aluminum die-casting in Patent Document 5, since the fin member is thick, the weight reduction or miniaturization of the heat exchanger is limited, and its installation place and use are limited.

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