Global Patent Index - EP 0027619 A3

EP 0027619 A3 19820120 - METHOD OF OPERATING A HEAT PUMP

Title (en)

METHOD OF OPERATING A HEAT PUMP

Publication

EP 0027619 A3 19820120 (DE)

Application

EP 80106186 A 19801010

Priority

DE 2942595 A 19791022

Abstract (en)

[origin: EP0027619A2] The invention refers to a method for operating a heat pump. The compressor of the heat pump is, in this case, switched off when a maximum permissible pressure of the refrigerant is reached. In contrast to the conventional mode of operation in accordance with the state of technology, in which switching off counts as a fault case, the compressor - after being switched off because the maximum permissible pressure of the refrigerant has been reached - is switched on again after a first constant time (t1) has elapsed. Compressor switching off which counts as a fault case only occurs when the pressure of the refrigerant rises again to the maximum permissible value (pmax) within a second constant time (t2). The switching cycle, however, starts from the beginning when the maximum permissible pressure (pmax) only occurs after the second constant time (t2) has been exceeded. This method of operation reduces the compressor switching frequency and the number of fault cases. <IMAGE>

IPC 1-7

F25B 49/00; F24J 3/04

IPC 8 full level

F25B 30/02 (2006.01); F25B 49/02 (2006.01)

CPC (source: EP)

F25B 30/02 (2013.01); F25B 49/02 (2013.01); F25B 2600/0251 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH FR GB IT

DOCDB simple family (publication)

EP 0027619 A2 19810429; EP 0027619 A3 19820120; DE 2942595 A1 19810430; DE 2942595 C2 19811008

DOCDB simple family (application)

EP 80106186 A 19801010; DE 2942595 A 19791022