Air conditioner with series/parallel secondary evaporator and single expansion valve
US8677779B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2011 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Apr 17, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2400/0409
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An air conditioning system has one expansion valve supplying refrigerant to two evaporators. A vapor quality of a refrigerant has an initial value at a primary inlet of a primary evaporator, and has a resultant value at the primary outlet. The primary evaporator has a bypass inlet at a first location where the vapor quality of the refrigerant is less than about 80% of the resultant value. A secondary evaporator has a secondary inlet receiving a bypass portion of the metered flow of refrigerant split-off at a second location of the primary evaporator between the first location and the expansion valve. The secondary outlet is connected to the bypass inlet. Thus, cooling can be achieved for two different zones using only one expansion valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.