G - Physics – 05 – D
Patent
G - Physics
05
D
341/32
G05D 23/12 (2006.01)
Patent
CA 1295035
Abstract A liquid temperature controlling method and ap- paratus are provided in which on/off valves are util- ized. In the case in which the liquid is water, rela- tively hot water is supplied to a first set of the on/off valves while relatively cold water is supplied to a second set of the on/off valves. The on/off valves are housed in a compact manifold assembly having a number of channels through which water flows to and from the valves. Each of the valves communicates with an orifice, with each orifice communicating with the hot water valves being of a different size to produce binary flow patterns of water exiting the hot water as- sociated orifices and valves. Similarly, each of the orifices communicating with a cold water valve is of a different size so that the flow rate of water from each cold water associated orifice is related in a binary manner to the flow rates through the other cold water associated orifices and valves. Because of the greate- viscosity of the hot water, it is preferable that the hot water associated orifices be of a smaller size than corresponding cold water orifices. The opening/closing of the valves is controlled using information stored in memory. The programmed information correlates valve openings with information relating to water tempera- ture. The user selects a desired water temperature and this temperature is compared with the actual tempera- ture of the water. When there is a difference between the actual and desired temperatures, one or more dif- ferent combinations of valves can be opened in a predetermined manner without cycling through all pos- sible valve combinations defined between the current combination of valve openings and the next combination of valve openings whereby the difference between the actual and desired temperatures is rapidly reduced.
571787
Ciciora John A.
Everest D. Clark III
Polson Jerry H.
Sable Arthur J.
Sperling Jac K.
Ciciora John A.
Everest D. Clark III
Gowling Lafleur Henderson Llp
Naiad Company Usa
Polson Jerry H.
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