Air conditioning apparatus
US8616017B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2009 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Nov 14, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2313/02741
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A first cycle, in which a first medium is circulated, employs a compressor, a first heat exchanger structured with an air heat exchanger, a second heat exchanger, and a third heat exchanger. A second cycle, in which a second medium is circulated and heat is exchanged with the first medium through the second heat exchanger, employs indoor units, each having a fan. A third cycle, in which the second medium is circulated and heat is exchanged with the first medium through the third heat exchanger, shares the indoor units with the second cycle. Flow path switching valves switch flow paths between the second cycle and third cycle. Before the first heat exchanger is defrosted, a halted indoor unit is filled with the second medium in the third cycle with its fan being halted. The third heat exchanger functions as an evaporator during a defrosting operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.