Falling film evaporator with refrigerant distribution system
CA 2219676 C · Owner: Trane International Inc. · Inventors: Hartfield, Jon P.; Sanborn, Duane F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compression refrigeration apparatus (1) for removing heat from a heat load using a falling film evaporator (8), operated with an azeotropic refrigerant and utilizing a spray tree distribution system (37) that distributes a refrigerant film on a heat exchange surface by spraying liquid refrigerant onto a surface (65) and allowing the refrigerant to drip onto the primary heat exchange surface (56). The apparatus allows for efficient recovery of lubricant deposited in the evaporator (8) without redistributing the lubricant within the evaporator (8). In an alternative embodiment liquid refrigerant is , sprayed onto a mesh screen (80) where it drips onto the primary heat exchange surface …
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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
- Filed April 22, 1996 and granted July 10, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 22, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 22, 2018.
- 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.