Absorption structure of compressor

Abstract

The invention provides an absorption structure of compressor, when the compressor starts, the state of the absorption port of the compressor main body is kept closed, and the starting load of the prime motor is reduced. The absorption part structure of the compressor is equipped with an absorption channel which is communicated with the absorption port of a compressor main body, and a capacity control valve is equipped on the absorption channel, and the capacity control valve is equipped with a valve body, and the valve has a non-return function for permitting gas passing through from primary side to secondary side only when the valve is opened. In addition, a normal close type auxiliary switch valve is provided on the absorption channel at the primary side or the secondary side of the capacity control valve, when the pressure in a storage pot is larger or equal to initial pressure for regulated common operation, the absorption channel is opened.

Description

technical field [0001] The present invention relates to a structure of a suction part of a compressor, and more specifically, to a structure of a suction part of a compressor having a capacity control device that controls the suction of a compressor main body driven by a prime mover such as an engine or an electric motor. Gas, the pressure of the compressed gas supplied to the consumption side is controlled to be close to the specified target pressure. Background technique [0002] A capacity control device is installed in the compressor that sucks gas into the compressor main body driven by the prime mover, compresses it, and supplies the compressed gas to the consumption side connected to an air working machine, etc. The secondary side pressure controls the intake air volume of the compressor main body, and by controlling the intake air volume of the compressor main body with the capacity control device, the secondary side pressure of the compressor main body is controlled...

AI Technical Summary

Problems solved by technology

[0007] In the compressor constituted as above, if the compressor main body 140 is started with the suction port 143 opened, a large amount of gas is sucked into the compressor main body 140 and compressed, thereby generating a large load, and the drive for driving it The prime mover 150 is also subjected to a large load, causing a slow start-up problem of the prime mover 150, or causing a start-up failure such as stopping the prime mover 150, which is in an unstable operation state at a low rotational speed immediately after the start-up.

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