Zone control apparatus for central heating and/or cooling systems
US4742956A · kind A · utility
Inventor
Key dates
| Filing date | Jun 12, 1986 |
| Grant date | May 10, 1988 |
| Priority date | — |
| Expiry date | Jun 12, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/1934
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A zone control apparatus for central heating and/or cooling systems having a central fluid heating and/or cooling plant conduits for directing the heated or cooled fluid to the rooms in a house or other building being serviced by the system. The zone control apparatus comprises one or more flow control devices operatively with respective fluid conduits in the central heating and/or cooling system, and a cycle controller for cycling the flow control device or devices between high and low (or no) flow conditions at times strategically selected to correspond to periods of high and low use of the room or rooms with which the flow control devices are respectively associated. Accordingly, the apparatus operates automatically to eliminate unnecessary heating or cooling of individual rooms or zones during cyclical periods of low or no use whereby substantial energy savings and other benefits may be obtained with minimal compromise in comfort. In particular, the zone control apparatus may operate on the system to isolate or separate daytime and nighttime use areas or zones of the house for selective heating or cooling only during their respective daytime or nighttime use or anticipated use …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.