Two-stage refrigerant compressor and operation method thereof
US12385487B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2024 |
| Grant date | Aug 12, 2025 |
| Priority date | — |
| Expiry date | May 13, 2044 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C28/24
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A two-stage refrigerant compressor and an operation method thereof are disclosed. The two-stage refrigerant compressor (10) includes: a housing (1); a first compressor module (2) having first screw rods (21) and a first motor (22) driving the first screw rods (21) to rotate; a second compressor module (3) having second screw rods (31) and a second motor (32) driving the second screw rods (31) to rotate; an adjustment mechanism (4) having a first slide valve (41) and a second slide valve (42); a middle pressure sensor (51) configured to acquire a current middle pressure; and a processor configured to receive data of the current middle pressure, control rotating speeds of the first motor (22) and the second motor (32), and control locations of the first slide valve (41) and the second slide valve (42).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.