초록 ▼

A humidity control system employed on a container refrigeration unit, and method of controlling the container humidity, that includes a computer controller and utilizes a humidity sensor, a moisture supply system in combination with output drivers to control and limit the level of relative humidity

A humidity control system employed on a container refrigeration unit, and method of controlling the container humidity, that includes a computer controller and utilizes a humidity sensor, a moisture supply system in combination with output drivers to control and limit the level of relative humidity level within a cargo container to a predetermined range when normal refrigeration system controls are active. The humidity control system operates the moisture supply system in a manner that significantly maintains a high, but not excessive, level of moisture in the circulating air and in the stored cargo. The humidity control system can also be configured to operate as a stand-alone system thereby eliminating the need to provide additional evaporator fan controls for the refrigeration unit.

대표청구항 ▼

[ We claim:] [1.] A method of operating a humidity control system used in conjunction with a refrigeration system for a contained space, said control system including a computer having a memory unit, at least one H.sub.2 O source, and at least one humidity sensor, said confined space being linked to

[ We claim:] [1.] A method of operating a humidity control system used in conjunction with a refrigeration system for a contained space, said control system including a computer having a memory unit, at least one H.sub.2 O source, and at least one humidity sensor, said confined space being linked to said refrigeration unit via an air circulating circuit, said circuit having start and completion ends oppositely situated relative to said refrigeration system, said method comprising the steps of:disposing at least one humidity sensor along said air circulating circuit at the completion end of said circuit, said completion end being disposed prior to the refrigeration system,extracting digitized data from said at least one humidity sensor during operation of the refrigeration system;storing the digitized data extracted from said at least one humidity sensor in the memory unit;determining when to activate and when to deactivate said at least one H.sub.2 O source according to said computer responding to a computer program that processes said digitized data;activating said at least one H.sub.2 O source according to said determining step; anddeactivating said at least one H.sub.2 O source according to said determining step, wherein at least one H.sub.2 O source is disposed at the start end of said circuit, said start end being proximate to air entering the circuit from said refrigeration system.