Capacity control systems for inverter-driven centrifugal compressor based water chillers
CA 1237182 A · Owner: York International Corporation · Inventors: Erth, Richard A.; Kountz, Kenneth J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
24-, CAPACITY CONTROL SYSTEMS FOR INVERTER-DRIVEN CENTRIFUGAL COMPRESSOR BASED WATER CHILLERS ABSTRACT:, A capacity control system for a refrigeration system including a compressor (20), a condensor (22), and an evaporator (28), all connected in a closed refrigeration circuit is provided. The compressor includes a plurality of adjustable inlet guide vanes (31), a motor (32) connected to regulate the inlet guide vanes position, and an electrical speed motor (36) connected to drive the compressor. The capacity control system includes a microprocessor responsive to continual measurements of a PRV signal, a compressor head signal and a suction flow signal for calculating a current operating …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 24, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 24, 2005.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.