Air conditioning system
US5142879A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1991 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | Mar 19, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2600/2501
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An air conditioning system for multiple rooms, comprising: PA0 an outdoor unit including a variable delivery compressor, a four way reversing valve and an outdoor heat exchange unit; PA0 two main connecting pipes composed of a high pressure main pipe and a low pressure main pipe to connect between outdoors and indoors; PA0 a distribution controller which is connected to the main connecting pipes to divide them into a high pressure pipe, a low pressure pipe and a medium pressure pipe therein; PA0 a plurality of indoor units which include indoor heat exchangers, respectively, which are one end connected to the medium pressure pipe through electronic expansion valves, respectively, and which are the other end selectively connected to either one of the high pressure pipe and the low pressure pipe, respectively; PA0 detecting means for detecting either one of refrigerant temperatures and refrigerant pressures; and PA0 control means for carrying out a predetermimed control based on such detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.