Refrigerant circulation device, refrigerant circulation method, refrigerant filling method, and method for operating refrigerant circulation device
US10443899B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 28, 2016 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Mar 28, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2400/13
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An object of the present invention is to provide a refrigerant circulation device and method that can suppress acid generation caused by decomposition of a refrigerant containing an HFO or HCFO. The refrigerant circulation device has a compressor, a condenser, expansion valves and an evaporator connected by a main pipe to form a refrigerant circulation circuit through which a refrigerant is circulated, the refrigerant circulation circuit being filled with a refrigerant containing a hydrofluoroolefin or a hydrochlorofluoroolefin having a carbon-carbon double bond within the molecular structure, wherein the refrigerant circulation device includes a drive that drives the compressor via a speed increaser, and a drive cooling unit that cools the drive with the refrigerant condensed in the condenser, and a desiccant that can trap moisture is disposed in the evaporator or the drive cooling unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.