Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filedfiledCritical
Priority to JP15533675ApriorityCriticalpatent/JPS5278149A/ja
Publication of JPS5278149ApublicationCriticalpatent/JPS5278149A/ja
Publication of JPS5444131B2publicationCriticalpatent/JPS5444131B2/ja
F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
F25B2700/00—Sensing or detecting of parameters; Sensors therefor
F25B2700/11—Sensor to detect if defrost is necessary
F25B2700/111—Sensor to detect if defrost is necessary using an emitter and receiver, e.g. sensing by emitting light or other radiation and receiving reflection by a sensor
Landscapes
Defrosting Systems
(AREA)
JP15533675A1975-12-241975-12-24Temperature controller of external air heat exchanger in heat pump
GrantedJPS5278149A
(en)
