Direct contact water heater
CA 1205374 A · Owner: Thurley (John) Limited · Inventors: Arnold, Gerald D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to an improvement in direct contact water heaters and methods of effecting heat exchange between hot gas and cold water. In a typical direct contact water heater cold water is sprayed downwards within a main chamber where it meets hot gas passing upwardly in a counter-current fashion. A direct contact water heater according to this invention includes an antechamber through which the hot gas is passed before entering the main chamber. The hot gas passing upwardly in a counter-current fashion to hot water which is at a temperature higher than the dew point of the gas raises the dew point of the hot gas before it enters the main chamber so that the cold water entering …
Read the whole patent
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 June 3, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 3, 2003.
- 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.