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Machine translation
1. (WO1981000446) METHOD AND APPARATUS FOR CONTROLLING CAPACITY OF A MULTIPLE-STAGE COOLING SYSTEM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/000446    International Application No.:    PCT/US1980/000971
Publication Date: 19.02.1981 International Filing Date: 31.07.1980
IPC:
F25B 49/02 (2006.01), G05D 23/20 (2006.01)
Applicants:
Inventors:
Priority Data:
62525 31.07.1979 US
Title (EN) METHOD AND APPARATUS FOR CONTROLLING CAPACITY OF A MULTIPLE-STAGE COOLING SYSTEM
(FR) PROCEDE ET APPAREIL DE COMMANDE DE LA CAPACITE D"UN SYSTEME DE REFROIDISSEMENT A ETAGES MULTIPLES
Abstract: front page image
(EN)In one exemplar embodiment, method and apparatus for controlling capacity of a multiple-stage cooling system which utilizes means for establishing a single predetermined cooling stage "cut-in" pressure (75) and a single predetermined cooling stage "cut-out" pressure (77), means for determining that the "cut-in" or "cut-out" pressures have been reached in the system (74 and 76), a delay means (82 and 84) for introducing a selected minimum time delay after determining that the refrigerant fluid pressure has either reached the established "cut-in" or "cut-out" pressures, and control means (90, 92, 94, 96 and 98) for controlling the turning on or off of the next cooling stage after the time delay has elapsed.
(FR)Dans un mode de realisation a titre d"exemple, un procede et un appareil de commande de la capacite d"un systeme de refroidissement a etages multiples, on utilise des moyens pour determiner une seule pression d""enclenchement" preetablie de l"etage de refroidissement (75) et une seule pression de "declenchement" preetablie de l"etage de refroidissement (77), des moyens pour determiner que les pressions d""enclenchement" et de "declenchement" ont ete atteintes dans le systeme (74 et 76), un temporisateur (82 et 84) pour l"introduction d"une temporisation minimum selectionnee apres avoir determine que la pression du fluide refrigerant a atteint les pressions d""enclenchement" ou de "declenchement" etablies, et des moyens de commande (90, 92, 94, 96 et 98) pour commander la mise en marche ou la coupure de l"etage de refroidissement suivant apres que la duree de temporisation soit ecoulee.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)