Title:
HOT WATER TEMPERATURE CONTROL VALVE SYSTEM
Document Type and Number:
WIPO Patent Application WO2002070930
Kind Code:
A3
Abstract:
A retrofit automatic temperature controlling apparatus and kit is attached to a prior art steam-cold water mixing valve assembly to produce mixed cold water and steam as hot water at a controlled temperature. An adjustment screw (92) is added to the prior art valve assembly to limit the displacement of a steam poppet valve (42) which is opened by a retrofitted piston. Cold water is redirected to a retrofit temperature control assembly having a mixing chamber for receiving the cold water. A water and steam receiving conduit (110) terminates in the mixing chamber (114) and has fluid isolated sections for receiving steam and cold water with a sleeve valve member (138) for selectively coupling the steam and cold water sections to the mixing chamber (114). The sleeve valve member (138) is operated by a temperature sensing device (154) in the outlet hot water chamber. A disc member (180) separates the mixing chamber (114) and outlet hot water chamber with small passages which promote mixing.
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Inventors:
PALMER ROBERT
Application Number:
PCT/US2002/005678
Publication Date:
April 03, 2003
Filing Date:
February 26, 2002
Export Citation:
Assignee:
STRAHMAN VALVES INC (US)
International Classes:
A61M39/00; G05D23/13; (IPC1-7): G05D23/13; F16K19/00
Foreign References:
| US5323960A | 1994-06-28 | |||
| US2412037A | 1946-12-03 | |||
| GB824965A | 1959-12-09 | |||
| GB610912A | 1948-10-22 | |||
| GB540779A | 1941-10-29 |
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