EP 0227504 B1 19890920 - METHOD OF PROTECTING A REFRIGERATION PLANT AGAINST DEPOSITS OF ADDITIVES IN THE REFRIGERANT CIRCUIT
Title (en)
METHOD OF PROTECTING A REFRIGERATION PLANT AGAINST DEPOSITS OF ADDITIVES IN THE REFRIGERANT CIRCUIT
Publication
Application
Priority
FR 8516355 A 19851105
Abstract (en)
[origin: EP0227504A1] 1. A method for monitoring and protecting a refrigeration plant, in particular against deposits of additives present in the refrigerant fluid, of the type formed by a heat-insulating chamber equipped with an access door and refrigerated by the evaporator of a single or double circuit for the circulation of refrigerant fluid(s), the refrigeration plant comprising a sensor of the temperature (theta 2) of the heat-insulating chamber, a sensor (45) of the opening of the access door, these sensors being connected to a unit (40) for processing the data supplied by the said sensors, the said unit being in its turn connected to means for alarm and protection (48, 49, 50), the method being characterised in that : - the temperature (theta 1) of the refrigerant circuit is sensed at regular intervals and memorised ; - this information is compared in the course of time in order to calculate the direction of drift of the temperature ; - the alarm and protection means (48, 49, 50) are actuated when the temperature drift (theta 1) of the refrigerant circuit is positive and when the temperature (theta 2) of the heat-insulating chamber is outside a prescribed range.
IPC 1-7
IPC 8 full level
F25B 7/00 (2006.01); F25B 49/00 (2006.01)
CPC (source: EP)
F25B 7/00 (2013.01); F25B 49/005 (2013.01)
Designated contracting state (EPC)
BE CH DE GB IT LI
DOCDB simple family (publication)
FR 2589561 A1 19870507; FR 2589561 B1 19880610; DE 3665767 D1 19891026; EP 0227504 A1 19870701; EP 0227504 B1 19890920
DOCDB simple family (application)
FR 8516355 A 19851105; DE 3665767 T 19861031; EP 86402443 A 19861031