Multilayer heat exchanger and heat exchange system

Abstract

In a multilayer heat exchanger of the present invention, a plurality of heat exchange units for performing heat exchange of a fluid fed from a plurality of compressors is stacked. Each of the heat exchange units has a structure that pluralities of flow passage plates and cooling plates are stacked. Concave grooves formed on surfaces are formed as flow passages of the fluid in the flow passage plates and cooling plates. The flow passage plates and cooling plates are made of metal, the flow passages are formed by chemical etching, and the stacked metal flow passage plates and cooling plates are bonded to each other by diffusion-bonding. Further, each of the heat exchange units is in one-to-one correspondence with each of the compressors.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a multilayer heat exchanger formed by stacking flow passage plates, and a heat exchange system in which this multilayer heat exchanger is used.[0003]2. Description of the Related Art[0004]There is a case where a high-temperature gas compressed by a compressor is guided to and cooled in a heat exchanger and the cooled high-pressure gas is charged into a tank or a cylinder. The heat exchanger used at this time includes a so-called fin type or plate type heat exchanger, and for example Japanese Unexamined Patent Application Publication No. 2000-283668 discloses such a heat exchanger. In the plate type heat exchanger having an integral structure that an interior is partitioned into a plurality of units by a partition wall, at least one of the plurality of units has a plurality of fluid inlets or outlets, and at least one side connecting to the inlets and the outlets forms a plurality of diff...

AI Technical Summary

Benefits of technology

The present invention provides a small heat exchanger with high pressure resistance and a heat exchange system.

Problems solved by technology

In a case where the above conventional heat exchanger is used for such a multi-step type compression system, there are a problem that there is a need for a large installment area for arranging the pluralities of compressors and heat exchangers and a problem that there is a larger installment area due to complicated piping when the numbers of the compressors and the heat exchangers are increased.

Further, due to low pressure resistance, the conventional heat exchanger is not suitable for treating the gas whose pressure is greatly increased by the multi-step type compression.

Thus, development of a heat exchanger having high pressure resistance is also an important challenge.

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