EP0027619A3 - Method of operating a heat pump - Google Patents

Method of operating a heat pump Download PDF

Info

Publication number
EP0027619A3
EP0027619A3 EP80106186A EP80106186A EP0027619A3 EP 0027619 A3 EP0027619 A3 EP 0027619A3 EP 80106186 A EP80106186 A EP 80106186A EP 80106186 A EP80106186 A EP 80106186A EP 0027619 A3 EP0027619 A3 EP 0027619A3
Authority
EP
European Patent Office
Prior art keywords
compressor
heat pump
shutdown
reached
constant time
Prior art date
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.)
Ceased
Application number
EP80106186A
Other languages
German (de)
French (fr)
Other versions
EP0027619A2 (en
Inventor
Siegfried Escher
Rainer Friedrich
Hans Grünleitner
Hans Werner Kranz
Dieter Kühl
Petr Dipl.-Ing. Rehor
Hans-Ulrich Schweer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kkw Kulmbacher Klimagerate-Werk GmbH
Original Assignee
Kkw Kulmbacher Klimagerate-Werk GmbH
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
Priority to DE19792942595 priority Critical patent/DE2942595C2/de
Priority to DE2942595 priority
Application filed by Kkw Kulmbacher Klimagerate-Werk GmbH filed Critical Kkw Kulmbacher Klimagerate-Werk GmbH
Publication of EP0027619A2 publication Critical patent/EP0027619A2/en
Publication of EP0027619A3 publication Critical patent/EP0027619A3/en
Ceased legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plant or systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B30/00Heat pumps
    • F25B30/02Heat pumps of the compression type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/02Compressor control
    • F25B2600/025Compressor control by controlling speed
    • F25B2600/0251Compressor control by controlling speed with on-off operation

Abstract

Die Erfindung bezieht sich auf ein Verfahren zum Betrei­ ben einer Wärmepumpe. Der Verdichter der Wärmepumpe wird hier beim Erreichen eines zugelassenen Höchstdruckes des Kältemittels abgeschaltet. Entgegen der beim Stand der Technik üblichen Verfahrensweise, bei der das Abschalten als Stör-Fall gilt, wird der Verdichter nach einer wegen Erreichen des zugelassenen Höchstdruckes des Kältemittels erfolgten Abschaltung nach Ablauf einer ersten konstanten Zeit (t₁) wieder eingeschaltet. Eine als Stör-Fall geltende Abschaltung des Verdichters erfolgt erst dann, wenn der Druck des Kälte­ mittels innerhalb einer zweiten konstanten Zeit (t₂) wieder auf den zulässigen Höchstwert (pmax) ansteigt. Der Schaltzyklus beginnt jedoch von vorne, wenn sich der zugelassene Höchstdruck (pmax) erst nach dem Überschreiten der zweiten konstanten Zeit (t₂) einstellt. Durch diese Verfahrensweise wird die Häufigkeit der Schaltspiele des Verdichters und die Anzahl der Stör-Fälle vermindert. The invention relates to a method for operating a heat pump. The compressor of the heat pump is switched off here when an approved maximum pressure of the refrigerant is reached. Contrary to the usual procedure in the prior art, in which the shutdown is considered a malfunction, the compressor is switched on again after a shutdown that has occurred because the maximum pressure of the refrigerant has been reached after a first constant time (t 1). A shutdown of the compressor, which is regarded as a malfunction, only takes place when the pressure of the refrigeration rises again to the permissible maximum value (p max ) within a second constant time (t₂). The switching cycle starts from the beginning, however, if the permitted maximum pressure (p max ) is only reached after the second constant time (t₂) has been exceeded. This procedure reduces the frequency of the compressor switching cycles and the number of malfunctions.
EP80106186A 1979-10-22 1980-10-10 Method of operating a heat pump Ceased EP0027619A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19792942595 DE2942595C2 (en) 1979-10-22 1979-10-22
DE2942595 1979-10-22

Publications (2)

Publication Number Publication Date
EP0027619A2 EP0027619A2 (en) 1981-04-29
EP0027619A3 true EP0027619A3 (en) 1982-01-20

Family

ID=6084054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106186A Ceased EP0027619A3 (en) 1979-10-22 1980-10-10 Method of operating a heat pump

Country Status (2)

Country Link
EP (1) EP0027619A3 (en)
DE (1) DE2942595C2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3016125C2 (en) * 1980-04-25 1983-12-22 Kkw Kulmbacher Klimageraete-Werk Gmbh, 8650 Kulmbach, De
DE3307269C2 (en) * 1982-03-19 1987-09-03 Satchwell Birka Regelungstechnik Gmbh, 5630 Remscheid, De
DE3423261A1 (en) * 1983-07-30 1985-02-07 Vaillant Joh Gmbh & Co Method for controlling a heat pump charging a water storage tank

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3298192A (en) * 1965-07-01 1967-01-17 Carrier Corp Control apparatus with timing means for refrigeration systems
US3700914A (en) * 1970-11-20 1972-10-24 Tappan Co The Control apparatus for air conditioning and like systems
US4094166A (en) * 1977-03-23 1978-06-13 Electro-Thermal Corporation Air conditioning control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3298192A (en) * 1965-07-01 1967-01-17 Carrier Corp Control apparatus with timing means for refrigeration systems
US3700914A (en) * 1970-11-20 1972-10-24 Tappan Co The Control apparatus for air conditioning and like systems
US4094166A (en) * 1977-03-23 1978-06-13 Electro-Thermal Corporation Air conditioning control system

Also Published As

Publication number Publication date
DE2942595A1 (en) 1981-04-30
DE2942595C2 (en) 1981-10-08
EP0027619A2 (en) 1981-04-29

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Legal Events

Date Code Title Description
AK Designated contracting states:

Designated state(s): AT BE CH FR GB IT

17P Request for examination filed

Effective date: 19811028

AK Designated contracting states:

Designated state(s): AT BE CH FR GB IT

RBV Designated contracting states (correction):

Designated state(s): AT BE CH FR GB IT LI

18R Refused

Effective date: 19830711

RIN1 Inventor (correction)

Inventor name: KRANZ, HANS WERNER

Inventor name: REHOR, PETR, DIPL.-ING.

Inventor name: ESCHER, SIEGFRIED

Inventor name: FRIEDRICH, RAINER

Inventor name: SCHWEER, HANS-ULRICH

Inventor name: GRUENLEITNER, HANS

Inventor name: KUEHL, DIETER