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Screw compressor pulsation damper

A technology of screw compressors and pulsation dampers, applied in the direction of machines/engines, rotary piston machines, intermeshing engines, etc., can solve the root cause of noise and vibration, increase cost and weight, and prevent screw type Compressor component wear and other problems

Inactive Publication Date: 2013-07-17
CARRIER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These solutions do not address the root causes of noise and vibration but provide countermeasures after the fact
Besides adding cost and weight, these solutions provide only limited noise reduction and do not prevent wear on internal screw compressor components
Other proposals have proposed noise barriers that prevent pulsation damage to screw compressor components but do not attenuate screw compressor noise or vibration

Method used

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  • Screw compressor pulsation damper
  • Screw compressor pulsation damper
  • Screw compressor pulsation damper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] figure 1 A partially cut-away perspective view of a screw compressor 10 is shown, which compresses a working fluid or gas, such as a refrigerant commonly used in refrigeration or air conditioning systems. The screw compressor 10 includes a rotor housing 12 , an outlet housing 14 , a sliding housing 16 , a male screw rotor 18 , a female screw rotor 20 , a drive motor 22 and a sliding valve assembly 23 . Male screw rotor 18 and female screw rotor 20 are disposed within rotor housing 12 and include shafting and bearings such that they are rotatably driven by drive motor 22 . For example, male screw rotor 18 includes shaft 24A (which extends axially through rotor housing 12 and into motor 22 and rests in bearing 26A) and shaft 24B (which extends axially into the outlet housing 14 and rests in bearing 26B). Refrigerant is introduced into rotor housing 12 at suction port 28 and is directed around motor 22 and into suction chamber 30 at the inlets of screw rotors 18 and 20 ....

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PUM

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Abstract

A screw compressor (10) comprises a housing (12, 14, 16), a slide valve assembly (23) and a pulsation damper. The housing (12, 14, 16) receives a supply of working matter from a pair of intermeshing screw rotors (18, 20), and comprises a slide recess (51), a pressure pocket (32), and a piston cylinder (54). The slide valve assembly (23) regulates the capacity of the screw compressor (10), and comprises a slide valve (36) axially movable within the slide recess (51) and the pressure pocket (32), a piston head (40) axially movable within the piston cylinder (54), and a piston shaft (38) connecting the slide valve (36) with the piston head (40). The pulsation damper comprises a flange (58) for separating the pressure pocket (32) from the piston cylinder (54), a bore (60) for receiving the piston rod (38), and a damping channel (46A) extending through the flange (58).

Description

technical field [0001] The present invention generally relates to screw compressors. Background technique [0002] Screw compressors usually include a pair of counter-rotating mating male screw (or male screw) and female screw (or female screw), which respectively have a plurality of lands or lands (land) that engage with each other. ) and channels; these lands and channels narrow from the inlet end toward the discharge end so that the outgoing working fluid or gas, or some other such working substance, changes in volume as it is pushed through the screw Small. The discharged working substance is released in pulses as each cooperating land and channel pushes a volume of working substance out of the compressor. Each pulse consists of a burst of energy that propagates through the working mass and the screw compressor as it exits the screw. Screw compressors are usually turned by an electric motor operating at a speed such that wave pulsations are discharged at a high freque...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01C1/16
CPCF04C2270/12F04C29/06F04C18/16F04C28/12F04C2270/14F04C2270/13F04C29/0035
Inventor P·J·弗拉尼冈B·A·弗拉泽
Owner CARRIER CORP