Title:
SCROLL COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2018/173543
Kind Code:
A1
Abstract:
Provided is a scroll compressor configured so that the malfunction of a back-pressure control valve due to contamination can be prevented. This scroll compressor comprises: a scroll unit having a stationary scroll and an orbiting scroll; a discharge chamber (H3) into which fluid having been compressed by the scroll unit is discharged; a back-pressure chamber (H4) for applying back-pressure for pressing the orbiting scroll against the stationary scroll; and a switching valve (900) disposed between the ends of a back-pressure supply passage (L1) for providing communication between the discharge chamber (H3) and the back-pressure chamber (H4). The switching valve (900) switches, according to the operating state of the scroll unit, between a first state in which the discharge chamber (H3) and the back-pressure chamber (H4) are in communication with each other, and a second state in which the back-pressure chamber (H4) and the suction chamber (H1) are in communication with each other.
Inventors:
INABA HIRONOBU (JP)
Application Number:
PCT/JP2018/004815
Publication Date:
September 27, 2018
Filing Date:
February 13, 2018
Export Citation:
Assignee:
SANDEN HOLDINGS CORP (JP)
International Classes:
F04C18/02; F04C29/12
Foreign References:
| JPH03172591A | 1991-07-25 | |||
| JPH0350308Y2 | 1991-10-28 | |||
| JPS58176489A | 1983-10-15 |
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