Refrigeration device having condenser unit connected to compressor unit with on-site pipe interposed therebetween and remote from the compressor unit
US11131490B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2016 |
| Grant date | Sep 28, 2021 |
| Priority date | — |
| Expiry date | Jan 23, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The refrigerant device includes a refrigerant circuit, an injection circuit, an inlet temperature sensor, an outlet temperature sensor, and a controller configured to control the operation of the refrigerant circuit. The controller includes an evaluation value calculation unit and a refrigerant amount detection unit. The evaluation value calculation unit calculates an evaluation value indicating a capability of a subcooling heat exchanger in accordance with an inlet temperature detected by the inlet temperature sensor and an outlet temperature detected by the outlet temperature sensor. The refrigerant amount detection unit determines whether there is a shortage of refrigerant in accordance with the evaluation value calculated by the evaluation value calculation unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.