Title:
COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2023/058106
Kind Code:
A1
Abstract:
This compressor is provided with: a casing having a low-pressure space and a high-pressure space having pressure higher than that of the low-pressure space; a motor accommodated in the casing; a screw shaft that is fixed to the motor and rotationally driven by the motor; a screw rotor that is fixed to the screw shaft, rotates with rotation of the screw shaft, and has a compression room that compresses a refrigerant flowing in from the low-pressure space and flows out the compressed refrigerant to the high-pressure space; and a slide valve that is arranged along an outer peripheral surface of the screw rotor and changes an inner volume ratio showing the ratio of a suction volume to an ejection volume of the compression room by sliding along an axial direction of the screw shaft. The slide valve has a valve body part having a bypass hole that connects the low-pressure space to the high-pressure space, and a valve body that is provided in the valve body part and brings the bypass hole into an open state when the pressure of the high-pressure space exceeds a threshold.
Inventors:
UENAKAI NAOTO (JP)
Application Number:
PCT/JP2021/036773
Publication Date:
April 13, 2023
Filing Date:
October 05, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F04C28/26; F04C18/16
Foreign References:
| US20100047103A1 | 2010-02-25 | |||
| JPS6240287U | 1987-03-10 | |||
| JPH0443883A | 1992-02-13 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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