Combined cooling plant/heat pump circuit
US7216503B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 5, 2004 |
| Grant date | May 15, 2007 |
| Priority date | — |
| Expiry date | May 10, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86839
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The invention relates to a combined plant/heat pump circuit with a compressor, a multi-way valve arranged downstream, an external heat exchanger as well as an interior heat exchanger and an internal heat exchanger. A multi-way valve is integrated into the refrigerant circuit such that a line loop is created in which one after the other the internal heat exchanger and an expansion element passable in one direction are arranged and such that the internal heat exchanger is always at the high pressure level and the internal heat exchanger is always at the low pressure level of the refrigerant circuit thereby avoiding the condensation of the refrigerant in the internal heat exchanger in heat pump operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.