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Compression device

A technology of a compression device and a screw compressor, applied in the field of compression devices, can solve problems such as the inability to suppress pulsation on the discharge side and the like

Active Publication Date: 2013-03-13
코벨코컴프레서가부시키가이샤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In Japanese Patent Application Laid-Open No. 2010-164059, it is described that in order to reduce the noise leaked to the outside through the suction flow path of the liquid-cooled screw compressor, by supplying the coolant in an amount corresponding to the rotation speed of the screw compressor to the suction flow, Invention to adjust the noise reduction effect of the coolant in the middle of the road, but it cannot suppress the pulsation on the discharge side

Method used

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Embodiment Construction

[0015] Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a schematic configuration of an air compressing device 1 as a first embodiment of the present invention. The air compression device 1 has two (number n = 2) screw compressors 2a, 2b, one motor 3 for driving the screw compressors 2a, 2b, a gear box 4 connecting the screw compressors 2a, 2b to the motor 3, and The suction chamber 5 of the filter 5a, the suction passages 6a, 6b connecting the suction chamber 5 to the suction parts of the screw compressors 2a, 2b, respectively, and the discharge channels 6a, 6b respectively connected to the discharge parts of the screw compressors 2a, 2b. The flow paths 7a, 7b, and the collection flow path 8 connecting the discharge flow paths 7a, 7b.

[0016] The screw compressors 2 a , 2 b respectively house a male rotor 10 and a female rotor 11 that engage with each other as shown in FIG. 2 inside a casing 9 . The rotor shaf...

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Abstract

The invention provides a compression device capable of reducing noised no matter what rotation speed and press conditions are. In the device having a plurality of screw compressors, the device has screw compressors which are set to n, when the number of teeth of male rotor is set to m. The phase of male rotor is shifted to specific range. The screw compressors are connected through a gearwheel, and are operated by set of motor.

Description

technical field [0001] The present invention relates to compression devices. Background technique [0002] In the screw compressor, the suction pressure and the discharge pressure fluctuate according to the phase of the screw rotor. The pulsation of the suction pressure and the discharge pressure may cause vibration and may be recognized as noise. [0003] Japanese Patent Application Laid-Open No. 7-332267 describes an invention for reducing pulsation by changing the cross-sectional area of ​​a discharge flow path of a screw compressor in synchronization with a screw rotor. However, the phase at which the discharge pressure of the screw compressor peaks varies depending on the rotation speed and the discharge pressure. Therefore, the present invention can only be applied under certain conditions of rotational speed and pressure. [0004] In Japanese Patent Application Laid-Open No. 2010-164059, it is described that in order to reduce the noise leaked to the outside throug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C23/00F04C29/06F04D29/00
Inventor 吉村省二中村元
Owner 코벨코컴프레서가부시키가이샤