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:
Sep. 23, 1980
Filed:
Dec. 22, 1978
Duane F Sanborn, La Crosse, WI (US);
Chester D Ware, La Crosse, WI (US);
The Trane Company, La Crosse, WI (US);
Abstract
An air cooled centrifugal water chiller is disclosed which may be operable (1) under conditions of low outdoor ambient temperature, requiring flooding of the air cooled condenser in order to reduce its capacity and maintain proper system operation; or (2) in a heat recovery mode through the provision of a liquid cooled heat recovery condenser which thereby accommodates a portion of or all the condensing load, also requiring reduction in the capacity of the air cooled condenser through flooding. In order to provide sufficient refrigerant within the system to accommodate flooding under the conditions enumerated above, a refrigerant storage vessel is provided in communication with the shell of the evaporator of the system for receiving and storing excess liquid refrigerant during those operating conditions when it is not required in order to flood the air cooled condenser. An added feature lies in the provision of suitable service valves for isolating the air cooled condenser and the refrigerant storage vessel from the evaporator and centrifugal compressor such that liquid refrigerant from the evaporator may be pumped into the refrigerant storage vessel in order to allow servicing of the compressor or evaporator. In a preferred embodiment, the refrigerant storage vessel comprises an elongated pipe member connected at one end to the evaporator shell and extending therefrom along an axis generally parallel to the longitudinal extent of the air cooled condenser.