EP 0632234 A1 19950104 - Reactive cooling and heating control system.
Title (en)
Reactive cooling and heating control system.
Title (de)
Reaktives Kühlungs- und Heizungsregelsystem.
Title (fr)
Système de commande réactive pour une installation de réfrigération et de chauffage.
Publication
Application
Priority
- US 8357593 A 19930630
- US 8359993 A 19930630
Abstract (en)
In a variable air volume system, chilled air is supplied from a cooler (10) to a number of zones (14, 16, 18). Zone controllers (30, 32, 34) send the supply air temperature detected by sensors (48, 50, 52) to a master controller (12) which issues a warning to all of the sensors when at least one of these temperatures drops too low, e.g. passed a trip temperature of one of the stages of the cooler (10). On receiving the warning, each zone controller (30, 32, 34) compensates by adjusting the air flow to its zone (14, 16, 18) using dampers (42, 44, 46). Different adjustments occur depending on whether the zone temperature is above or below a zone setpoint. The invention is also applicable to a heating system and to the monitoring of too great a rise in the temperature of supplied heated air. <IMAGE>
IPC 1-7
IPC 8 full level
F24F 3/044 (2006.01); F24F 11/00 (2006.01); F24F 11/053 (2006.01); F24F 11/76 (2018.01)
CPC (source: EP US)
F24F 3/044 (2013.01 - EP); F24F 11/30 (2017.12 - EP); F24F 11/54 (2017.12 - EP US); F24F 11/61 (2017.12 - EP US); F24F 11/76 (2017.12 - EP US); F24F 11/88 (2017.12 - EP US); F24F 11/63 (2017.12 - EP)
Citation (search report)
- [A] CH 672851 A5 19891229 - CARRIER CORP
- [A] US 5025638 A 19910625 - YAMAGISHI KATSUAKI [JP], et al
Designated contracting state (EPC)
ES FR GB IT
DOCDB simple family (publication)
EP 0632234 A1 19950104; EP 0632234 B1 19980304; ES 2114660 T3 19980601
DOCDB simple family (application)
EP 94304776 A 19940630; ES 94304776 T 19940630