Refrigeration – Automatic control – Refrigeration producer
Patent
1988-03-21
1990-03-13
Wayner, William E.
Refrigeration
Automatic control
Refrigeration producer
62 59, 62201, F25D 1702
Patent
active
049074172
ABSTRACT:
A cold drink dispenser and, more particularly a refrigeration system for such a dispenser, is disclosed. The dispenser has a beverage flow path, a first coil or evaporator for prechilling a beverage flowing through the beverage flowpath, and a second or ice bank coil immersed in a liquid bath with the flowpath also immersed in the ice bath. A first modulatable expansion valve (e.g., a pulse modulated solenoid valve) is used to regulate the flow of refrigerant through the first coil and a second modulatable valve is used to regulate the flow of refrigerant through the ice bank coil. A control system (e.g., a microprocessor-based control) monitors certain temperatures and initiates or blocks the flow of refrigerant through one or both of the coils in response to certain pre-established system paramaters so as to insure that the beverage dispensed is below a desired temperature, even under high load operating conditions.
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Egelhof brochure, "MPS+RTC the New Dimension" undated-Applicant does not admit this is Prior Art.
Egelhof brochure "MPS+RTC the Successful Electronic Controlled Expansion Valve"-Applicant does not admit that this is Prior Art.
Emerson Electric Co.
Wayner William E.
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