초록 ▼

The present invention relates to a refrigeration system of the type having an air cooled condenser which includes the further capability of producing a heated liquid in a liquid cooled or, “heat recovery”condenser. The system includes compressor means for compressing a vaporized refrigerant, air coo

The present invention relates to a refrigeration system of the type having an air cooled condenser which includes the further capability of producing a heated liquid in a liquid cooled or, “heat recovery”condenser. The system includes compressor means for compressing a vaporized refrigerant, air cooled condenser means having fan means for forcing air in heat exchange relationship therewith, liquid cooled condenser means for producing a heated liquid, and evaporator means for expanding and vaporizing condensed refrigerant in heat exchange relationship with a refrigeration load. Control means are provided for the system and include first means for sensing the demand for heated liquid from the liquid cooled condenser, and second means responsive to the first means for reducing the capacity of the fan means in response to increased demand for heated liquid. In another aspect of the invention, the liquid cooled condenser means include control means for maintaining a desired level of condensed refrigerant therein during operation in order to insure proper subcooling thereof. A complete control circuit for the system is disclosed.

대표청구항 ▼

A system for producing refrigeration and selectively operable for producing a heated liquid comprising a. compressor means for compressing a vaporized regrigerant; b. air cooled condenser means connected to said compressor means for receiving compressed refrigerant and condensing same by heat exchan

A system for producing refrigeration and selectively operable for producing a heated liquid comprising a. compressor means for compressing a vaporized regrigerant; b. air cooled condenser means connected to said compressor means for receiving compressed refrigerant and condensing same by heat exchange with a source of air, further including fan means for forcing said air in heat exchange relationship with said air cooled condenser means; c. liquid cooled condenser means connected to said compressor means for receiving compressed refrigerant and condensing same by heat exchange with a source of liquid, whereby a heated liquid is produced; d. evaporator means for expanding and vaporizing said condensed refrigerant in heat exchange relationship with a refrigeration load and returning the vaporized refrigerant to said compressor means; e. means for transferring condensed refrigerant from said air cooled and liquid cooled condenser means to said evaporator means, said air cooled condenser means remaining operable to condense refrigerant at reduced capacity during those times that said liquid cooled condenser means is operable to produce a heated liquid; and f. control means for said system comprising i. first means for sensing the demand for heated liquid from said liquid cooled condenser means; and ii. second means responsive to said first means for reducing the capacity of said fan means in response to increased demand for heated liquid during those times that such demand exists, whereby the capacity of said air cooled condenser means is controlled in response to the demand for heated liquid during those times that such demand exists.