The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 1978
Filed:
Jul. 19, 1977
Taketoshi Mochizuki, Shimizu, JP;
Fumio Harada, Shimizu, JP;
Tadahiro Imaizumi, Shimizu, JP;
Koichi Nose, Ashiya, JP;
Hitachi, Ltd., BOTH OF, JP;
Shin Meiwa Industry Co., Ltd., BOTH OF, JP;
Abstract
A refrigerating system having, arranged to form a closed circuit, a refrigerant compressor, a condensor, a receiver and a plurality of sets of evaporators and expansion valves with all the sets connected in parallel with one another. The system further includes a throttle mounted in the circuit between the condenser and the receiver, a branch line and change-over valves for selectively connecting the circuit on the delivery side of the compressor to each evaporator and a passage connecting each evaporator to the receiver by bypassing the associated expansion valve, so that the refrigerantin the state of a compressed gas can be supplied to a desired evaporator to defrost the same and the refrigerant condensed in the defrosted evaporator can be returned to the receiver. The system further includes a bypass line having a throttle, connecting a gas compartment in the upper portion of the receiver to a line on the suction side of the compressor, for returning to the line on the suction side of the compressor, flash gas incorporated in the liquid refrigerant returned from the defrosted evaporator to the receiver.