EP0108906A2 - Procédé de dégivrage de l'évaporateur d'une machine frigorifique utilisée par exemple comme pompe à chaleur - Google Patents

Procédé de dégivrage de l'évaporateur d'une machine frigorifique utilisée par exemple comme pompe à chaleur Download PDF

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Publication number
EP0108906A2
EP0108906A2 EP83109864A EP83109864A EP0108906A2 EP 0108906 A2 EP0108906 A2 EP 0108906A2 EP 83109864 A EP83109864 A EP 83109864A EP 83109864 A EP83109864 A EP 83109864A EP 0108906 A2 EP0108906 A2 EP 0108906A2
Authority
EP
European Patent Office
Prior art keywords
time
heating
defrosting
heat pump
evaporator
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.)
Granted
Application number
EP83109864A
Other languages
German (de)
English (en)
Other versions
EP0108906B1 (fr
EP0108906A3 (en
Inventor
Franz-Georg Dr. Dipl.-Phys. Gärtner
Dieter Kühl
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to AT83109864T priority Critical patent/ATE31808T1/de
Publication of EP0108906A2 publication Critical patent/EP0108906A2/fr
Publication of EP0108906A3 publication Critical patent/EP0108906A3/de
Application granted granted Critical
Publication of EP0108906B1 publication Critical patent/EP0108906B1/fr
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/002—Defroster control

Definitions

  • the invention relates to a method for defrosting the evaporator of a refrigeration machine operated, for example, as a heat pump according to the preamble of claim 1.
  • the object of the invention is to modify the method of the type mentioned in the preamble of claim 1 so that even in extreme weather conditions, the number of defrosting processes is kept small without sacrificing comfort and the determination of orientation times can be omitted.
  • the heating operating time following a defrosting process is determined by the heating operating time preceding the defrosting process, plus the time value that results from a difference between the penultimate and the linearly multiplied by a positive gain factor last defrost time.
  • the new heating operating time is reduced by 2o minutes compared to the previous heating operating time to 60 minutes, because in this case the difference between the penultimate and the last defrost time is negative.
  • heating operating times In order to obtain heating operating times in which the heat pump operates economically under all circumstances, these heating operating times are limited to a minimum value, for example 40 minutes and a maximum value, for example 24 minutes.
  • a defrosting process is only initiated if the ratio of the heat pump's running time is greater than a defined value, since the heat pump defrosts on its own due to the high outside temperature during downtime.
  • a defrosting process is initiated only when the duration of the heat pump was larger by the predetermined value, for example 2 as the lifetime.
  • defrosting is only carried out as long as an ice layer on the evaporator reduces the heat supply to the inside of the evaporator to such an extent that the pressure or the temperature of the refrigerant in the evaporator are below a predetermined instantaneous value. As soon as the predetermined instantaneous value, which depends on the refrigerant used, is reached, the system switches to heating mode.
  • the heating operation is started for 8 minutes after the voltage has returned, and then a defrosting process is initiated. The subsequent heating operating time is then equated to the heating operating time that was recorded before the power failure.
  • the method described can also be used analogously in the case of refrigeration machines used for cooling processes, cooling mode being used instead of heating mode and the temperature of the room or goods to be cooled being set instead of outside temperature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Defrosting Systems (AREA)
  • Air Conditioning Control Device (AREA)
EP83109864A 1982-10-15 1983-10-03 Procédé de dégivrage de l'évaporateur d'une machine frigorifique utilisée par exemple comme pompe à chaleur Expired EP0108906B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83109864T ATE31808T1 (de) 1982-10-15 1983-10-03 Verfahren zum abtauen des verdampfers einer beispielsweise als waermepumpe betriebenen kaeltemaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3238354 1982-10-15
DE19823238354 DE3238354A1 (de) 1982-10-15 1982-10-15 Verfahren zum abtauen des verdampfers einer beispielsweise als waermepumpe betriebenen kaeltemaschine

Publications (3)

Publication Number Publication Date
EP0108906A2 true EP0108906A2 (fr) 1984-05-23
EP0108906A3 EP0108906A3 (en) 1985-07-03
EP0108906B1 EP0108906B1 (fr) 1988-01-07

Family

ID=6175859

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83109864A Expired EP0108906B1 (fr) 1982-10-15 1983-10-03 Procédé de dégivrage de l'évaporateur d'une machine frigorifique utilisée par exemple comme pompe à chaleur

Country Status (3)

Country Link
EP (1) EP0108906B1 (fr)
AT (1) ATE31808T1 (fr)
DE (2) DE3238354A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0278701A3 (en) * 1987-02-06 1989-10-04 York International Ltd Improvements in or relating to defrosting of heat exchangers
CN113899123A (zh) * 2021-10-29 2022-01-07 四川虹美智能科技有限公司 智能冷藏设备远程控制化霜方法及系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4951473A (en) * 1988-10-12 1990-08-28 Honeywell, Inc. Heat pump defrosting operation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4173871A (en) * 1977-12-27 1979-11-13 General Electric Company Refrigeration apparatus demand defrost control system and method
US4156350A (en) * 1977-12-27 1979-05-29 General Electric Company Refrigeration apparatus demand defrost control system and method
US4251988A (en) * 1978-12-08 1981-02-24 Amf Incorporated Defrosting system using actual defrosting time as a controlling parameter
US4680940A (en) * 1979-06-20 1987-07-21 Vaughn Eldon D Adaptive defrost control and method
US4328680A (en) * 1980-10-14 1982-05-11 General Electric Company Heat pump defrost control apparatus
DE3115599C2 (de) * 1981-04-16 1986-07-10 KKW Kulmbacher Klimageräte-Werk GmbH, 8650 Kulmbach Abtausteuerung für eine Wärmepumpe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0278701A3 (en) * 1987-02-06 1989-10-04 York International Ltd Improvements in or relating to defrosting of heat exchangers
CN113899123A (zh) * 2021-10-29 2022-01-07 四川虹美智能科技有限公司 智能冷藏设备远程控制化霜方法及系统
CN113899123B (zh) * 2021-10-29 2022-12-13 四川虹美智能科技有限公司 智能冷藏设备远程控制化霜方法及系统

Also Published As

Publication number Publication date
EP0108906B1 (fr) 1988-01-07
DE3375202D1 (en) 1988-02-11
ATE31808T1 (de) 1988-01-15
DE3238354A1 (de) 1984-04-19
EP0108906A3 (en) 1985-07-03

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