EP 3760945 A1 20210106 - CONTROL DEVICE OF FREEZER, FREEZER, METHOD FOR CONTROLLING FREEZER, AND PROGRAM FOR CONTROLLING FREEZER
Title (en)
CONTROL DEVICE OF FREEZER, FREEZER, METHOD FOR CONTROLLING FREEZER, AND PROGRAM FOR CONTROLLING FREEZER
Title (de)
STEUERUNGSVORRICHTUNG FÜR GEFRIERGERÄT, GEFRIERGERÄT, VERFAHREN ZUR STEUERUNG DES GEFRIERGERÄTS UND PROGRAMM ZUR STEUERUNG DES GEFRIERGERÄTS
Title (fr)
DISPOSITIF DE COMMANDE DE CONGÉLATEUR, CONGÉLATEUR, PROCÉDÉ DE COMMANDE DE CONGÉLATEUR ET PROGRAMME DE COMMANDE DE CONGÉLATEUR
Publication
Application
Priority
- JP 2018073193 A 20180405
- JP 2019013853 W 20190328
Abstract (en)
The purpose of the present invention is to provide a control device of a freezer, a freezer, a method for controlling the freezer, and a program for controlling the freezer, in which the temperature of an ejected refrigerant can be preserved while suppressing performance degradation. Provided is a control device (10) of a freezer that comprises: a compressor (2) for compressing a refrigerant; a condenser (3) for condensing the compressed refrigerant; an expansion valve (5) for expanding a liquid refrigerant, the opening degree of the expansion valve being controlled by means of an evaporator outlet superheating degree control that controls the superheating degree of the refrigerant at an outlet of the evaporator (6) to a value within a first predetermined range; and the evaporator (6) for evaporating the refrigerant. When the temperature of the ejected refrigerant exceeds a first threshold, the evaporator outlet superheating degree control is stopped, and the opening degree of the expansion valve (5) is controlled to increase by means of an ejected refrigerant temperature protection control that controls the temperature of the ejected refrigerant to a value within a second predetermined range. When the temperature of the ejected refrigerant is below a second threshold lower than the first threshold, and the superheating degree of the refrigerant at the outlet of the evaporator (6) is greater than or equal to a third threshold, the ejected refrigerant temperature protection control is stopped, and the opening degree of the expansion valve (5) is controlled by means of the evaporator outlet superheating degree control.
IPC 8 full level
F25B 1/00 (2006.01)
CPC (source: EP)
F25B 1/00 (2013.01); F25B 49/02 (2013.01); F25B 2400/0409 (2013.01); F25B 2400/0411 (2013.01); F25B 2600/21 (2013.01); F25B 2600/2513 (2013.01); F25B 2700/21152 (2013.01); F25B 2700/21175 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3760945 A1 20210106; EP 3760945 A4 20210519; JP 2019184115 A 20191024; JP 7154800 B2 20221018; WO 2019194082 A1 20191010
DOCDB simple family (application)
EP 19782212 A 20190328; JP 2018073193 A 20180405; JP 2019013853 W 20190328