DE3889237D1 - Defrosting system for heat exchangers. - Google Patents

Defrosting system for heat exchangers.

Info

Publication number
DE3889237D1
DE3889237D1 DE3889237T DE3889237T DE3889237D1 DE 3889237 D1 DE3889237 D1 DE 3889237D1 DE 3889237 T DE3889237 T DE 3889237T DE 3889237 T DE3889237 T DE 3889237T DE 3889237 D1 DE3889237 D1 DE 3889237D1
Authority
DE
Germany
Prior art keywords
defrost
heat exchangers
determine whether
defrost cycle
time taken
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.)
Expired - Lifetime
Application number
DE3889237T
Other languages
German (de)
Inventor
Anthony Robert Fry
Derek Kent
Bernard W Johnson
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.)
York International Ltd
Original Assignee
York International Ltd
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 York International Ltd filed Critical York International Ltd
Application granted granted Critical
Publication of DE3889237D1 publication Critical patent/DE3889237D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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

Abstract

An adaptive heat exchanger defrost system e.g. for a heat pump evaporator, incorporates a system controller which adapts the intervals between defrost cycles to prevailing conditions in order to improve overall efficiency. The time taken to complete a defrost cycle is measured and compared with the time taken for the preceding defrost cycle to determine whether it is appropriate to increase or decrease the interval between samplings of the operating parameter used to determine whether a defrost cycle is required.
DE3889237T 1987-02-06 1988-02-05 Defrosting system for heat exchangers. Expired - Lifetime DE3889237D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878702722A GB8702722D0 (en) 1987-02-06 1987-02-06 Defrosting of heat exchangers

Publications (1)

Publication Number Publication Date
DE3889237D1 true DE3889237D1 (en) 1994-06-01

Family

ID=10611837

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3889237T Expired - Lifetime DE3889237D1 (en) 1987-02-06 1988-02-05 Defrosting system for heat exchangers.

Country Status (5)

Country Link
EP (1) EP0278701B1 (en)
AT (1) ATE105071T1 (en)
DE (1) DE3889237D1 (en)
ES (1) ES2055736T3 (en)
GB (1) GB8702722D0 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1180652B1 (en) * 2000-08-18 2006-09-27 Ranco Incorporated of Delaware Controller and method for controlling a defrost operation in a refrigerator
CA2776382C (en) 2009-10-02 2018-01-30 The Controls Group, Inc. Removal of an accumulated frozen substance from a cooling unit
FR3101137B1 (en) * 2019-09-19 2022-03-18 Guinault Sa Air conditioning unit for aircraft

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4206612A (en) * 1977-07-15 1980-06-10 Emhart Industries, Inc. Refrigeration system control method and apparatus
DE2850198A1 (en) * 1978-11-18 1980-05-29 Hamadeh Deicing control for refrigerator plant - has heating elements controlled in groups with temp. sensor cut=out to minimise energy consumed
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
DE3043459A1 (en) * 1980-11-18 1982-07-08 Linde Ag, 6200 Wiesbaden DEFROST THE REQUIRED FURNITURE
DE3110042A1 (en) * 1981-03-16 1982-09-30 Gesellschaft für Wärmepumpen und Energierückgewinnungsanlagen mbH, 7311 Holzmaden Method and arrangement for the defrosting of ice on an air cooler of a heat pump or refrigerator
DE3115599C2 (en) * 1981-04-16 1986-07-10 KKW Kulmbacher Klimageräte-Werk GmbH, 8650 Kulmbach Defrost control for a heat pump
US4395887A (en) * 1981-12-14 1983-08-02 Amf Incorporated Defrost control system
DE3235642A1 (en) * 1982-09-25 1984-03-29 3 E Elektronik-Elektro-Energieanlagen Baugesellschaft mbH, 5500 Trier Device for electric defrost regulation for the evaporator of a refrigerating plant
DE3238354A1 (en) * 1982-10-15 1984-04-19 Siemens AG, 1000 Berlin und 8000 München METHOD FOR DEFROSTING THE EVAPORATOR OF AN EXAMPLE OF A REFRIGERATOR USED AS A HEAT PUMP
US4538420A (en) * 1983-12-27 1985-09-03 Honeywell Inc. Defrost control system for a refrigeration heat pump apparatus
US4563877A (en) * 1984-06-12 1986-01-14 Borg-Warner Corporation Control system and method for defrosting the outdoor coil of a heat pump
US4627245A (en) * 1985-02-08 1986-12-09 Honeywell Inc. De-icing thermostat for air conditioners

Also Published As

Publication number Publication date
EP0278701B1 (en) 1994-04-27
EP0278701A2 (en) 1988-08-17
GB8702722D0 (en) 1987-03-11
ES2055736T3 (en) 1994-09-01
EP0278701A3 (en) 1989-10-04
ATE105071T1 (en) 1994-05-15

Similar Documents

Publication Publication Date Title
JPS6463744A (en) Defrostation control method and device at time of demand
ES425332A1 (en) Freeze protection device in heat pump system
ES494960A0 (en) A SYSTEM FOR CONTROLLING THE INLET WATER TEMPERATURE IN AN EVAPORATOR, FOR A REFRIGERATION INSTALLATION
DE68911406D1 (en) Condenser / evaporator heat exchanger with pumping action and low pressure loss.
DE3889237D1 (en) Defrosting system for heat exchangers.
EP1055885A3 (en) Air conditioner
JPS5340450A (en) Defrost system of air cool heat pump type air conditioner
ATE19431T1 (en) CONTROL UNIT FOR REFRIGERATOR.
US4184544A (en) Apparatus and method for recovering waste heat from flue gases
HUP9903553A2 (en) A method of recording heat consumed in a radiator and a heat consumption meter for a radiator
JPS6475850A (en) Air conditioner
FR2439371A1 (en) Power economiser for heat pump or refrigeration circuit - uses pre-cooler having gas phase with different entropies at same temp. and condensing at evaporation temp.
JPS53119449A (en) Defrosting controller
SU1509628A1 (en) Method of monitoring the mode of heat consumption
JPS55143346A (en) Controller for defrosting air conditioner
SU641237A1 (en) Device for drying and cooling air for air conditioning system
JPS54108954A (en) Water chilling machine
SU929971A1 (en) Absorption refrigeration unit
KR880003904Y1 (en) Dehumidification circuit for air conditioner
JPS5430640A (en) Air cooling heat pump type air conditioner
SU495507A1 (en) The method of controlling the temperature of the refrigerant vapor after a reflux condenser in an absorption refrigeration unit
IT8302916A0 (en) SYSTEM FOR SAVING ELECTRICITY CONSUMPTION FOR ECONOMIC AND INDUSTRIAL REFRIGERATION SYSTEMS, AS WELL AS AIR CONDITIONERS.
JPS6423050A (en) Defrosting method for heat pump type air conditioner
JPS6490965A (en) Air conditioner
Stark Implementing DIT

Legal Events

Date Code Title Description
8332 No legal effect for de