EP1496324B1 - Kühlgerät mit automatischer zeitbestimmter Entfrostung - Google Patents

Kühlgerät mit automatischer zeitbestimmter Entfrostung Download PDF

Info

Publication number
EP1496324B1
EP1496324B1 EP04103090.9A EP04103090A EP1496324B1 EP 1496324 B1 EP1496324 B1 EP 1496324B1 EP 04103090 A EP04103090 A EP 04103090A EP 1496324 B1 EP1496324 B1 EP 1496324B1
Authority
EP
European Patent Office
Prior art keywords
time
defrost
compressor
value
refrigeration appliance
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.)
Revoked
Application number
EP04103090.9A
Other languages
English (en)
French (fr)
Other versions
EP1496324A1 (de
Inventor
Dejan Ergarac
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.)
Whirlpool Corp
Original Assignee
Whirlpool 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=33446436&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1496324(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Whirlpool Corp filed Critical Whirlpool Corp
Priority to PL04103090T priority Critical patent/PL1496324T3/pl
Publication of EP1496324A1 publication Critical patent/EP1496324A1/de
Application granted granted Critical
Publication of EP1496324B1 publication Critical patent/EP1496324B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Images

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
    • F25D21/008—Defroster control by timer
    • 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
    • F25B2600/00—Control issues
    • F25B2600/23—Time delays
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/02—Sensors detecting door opening
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/14—Sensors measuring the temperature outside the refrigerator or freezer

Definitions

  • the present invention relates to a refrigeration appliance with automatic time-determined defrost for containing food, drinks, liquid or solid substances etc.
  • Refrigeration appliances with automatic defrost systems known colloquially as no-frost refrigerators have long been available.
  • a film of ice forms on the evaporator, usually positioned in the conditioned temperature compartment in contact with the air present in the compartment, due to condensation and subsequent freezing of the moisture present in the air within the compartment.
  • the formation of this ice film prejudices heat transfer between the conditioned environment and the evaporator, so reducing the efficiency of the refrigeration cycle.
  • No-frost refrigerators present an automatic defrost system based on the activation of an electrical resistance element in heat transfer contact with the evaporator.
  • the defrost resistance element is activated manually or automatically by electronic devices which control the operating time of the compressor.
  • a new defrost cycle is normally carried out when the total time for which the compressor has operated reaches a predetermined value, for example 8 hours. These 8 hours can evidently be reached over quite different time periods, for example because periods of operation are interrupted by periods of non-operation. Assuming for example that the compressor operates for 50% of the time, a defrost operation will be automatically performed every 16 hours.
  • the duration of the effective defrost cycle can also be controlled, for example on the basis of the power of the resistance element or the size of the evaporator.
  • defrosting requires a considerable quantity of electrical energy.
  • just the defrost cycle for a common domestic refrigerator consumes of the order of 250 kWh annually.
  • defrosting can take place at any moment, and hence at times at which the electrical energy cost is at its highest.
  • US-A-5483804 discloses a refrigeration appliance according to the preamble of claim 1.
  • Said appliance has a defrost control apparatus in which a neural network generates a defrost on/off signal on the basis of numbers of door opening/closing times for each predetermined time zone.
  • the technical aim of the present invention is therefore to provide a device and process for the night-time defrosting of refrigerators which enable the starting time of the defrost cycle to be optimized, by advancing it or delaying it with respect to the time based on the use of the refrigerator (and hence of the compressor), so that the defrost cycle takes place at least partly during the hours of low energy tariff.
  • a refrigerator compartment contains an evaporator unit 4, comprising a substantially hairpin-type evaporator 5 in heat transfer contact with the air present in the compartment and conveyed towards the evaporator 5 by a fan V.
  • a refrigerant fluid flows through the evaporator, with which a suitably sized conventional resistance element 6 is in heat transfer contact.
  • the evaporator 5 forms part of a conventional refrigeration unit 7, comprising a compressor 8, a condenser 9 and a throttle valve 10.
  • the resistance element 6 is connected to a current source 11 and to a static switch 12 (triac), the output 12a of which is controlled by a microprocessor 13.
  • the microprocessor 13 hence controls the opening/closure of the static switch 12 and also, via the line 14, the starting/stopping of the compressor 8 of the circuit of the refrigeration unit 7.
  • the microprocessor 13 is suitable for making calculations, and is connected to a clock 15, to a timer 18, to a dynamic memory unit 17 and to a static memory unit 16.
  • the static memory unit 16 stores information regarding the value of preset parameters such as the operating time Tr required of the defrosting resistance element 6 if this time is not determined by the operation of the bimetallic switch associated with the evaporator, the total operating time Ts of the compressor 8 after which defrosting is required (8 hours in the example), and the maximum time Tdmax between two consecutive defrost operations (50 hours in the example).
  • the defrost time comprises both the operating time Tr of the resistance element and the time required for the compressor to annul the overheating of the environment caused by the resistance element 6 itself; in the example the sum of these two times is quantified as 3 hours. In the example there is only one time band of low tariff electrical energy during the day, this being assumed to be from 10 p.m. to 6 a.m.
  • the parameters Tdmax, Ts, Tr can have different values, suitable for a particular environment or apparatus.
  • the said parameters can be decided each time, so that they become variables (for example Ts(Td)), determined automatically by the microprocessor 13 according to the values of other variables, such as the number of openings of the door 2f, the ambient temperature, atmospheric humidity, etc.
  • the time Tp for which the defrost resistance element operates can be preset or determined by the (bimetallic) temperature switch present on the evaporator 5.
  • the calculation of the time and date effected in S5 for the next defrost cycle can be based on more complex calculation algorithms with a greater number of variables, such as ambient temperature, atmospheric humidity or the number of openings of the door 2f.
  • a buzzer can sound or any other visual or acoustic signals be provided.
  • the clock 15 can be set manually by the user or be of radio-controlled automatically set type.
  • the low tariff band can be different from that from 10 p.m. to 6 a.m. There can also be more than one time band (of low tariff ) within which defrost is allowed to take place.

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)

Claims (3)

  1. Kältegerät wie etwa ein Kühlschrank, Gefrierschrank und dergleichen, umfassend einen Verdampfer (5), einen Kompressor (8) und ein elektrisches Abtaumittel (6) für den Verdampfer (5), einen Mikroprozessor (13), der mit einem Zeitmessmittel (15, 18) verbunden ist, welches dem Mikroprozessor (13) Daten in Bezug auf das Funktionieren des Kompressors (8) zu dem Zweck bereitstellt, dass aus den Daten ein prozentualer Betrieb des Kompressors (8) und eine Angabe hinsichtlich des vorhergesagten Beginns des Abtauvorgangs (Hd1) erhalten werden, dadurch gekennzeichnet, dass der Mikroprozessor (13) so gestaltet ist, dass diese Angabe zu dem Zweck mit einem oder mehreren Zeitbändern eines niedrigen Energietarifs verglichen wird, den tatsächlichen Beginn des nächsten Abtauvorgangs nötigenfalls so vorzuverlegen oder zu verzögern, dass er innerhalb des festgelegten Zeitbands eines niedrigen Energietarifs stattfindet.
  2. Kältegerät nach Anspruch 1, dadurch gekennzeichnet, dass der Prozentsatz als die durch die Gesamtzeit (Td) aus der Summe der Zeit des Betriebs des Kompressors (Tc) plus der Zeit des Nichtbetriebs des Kompressors geteilte Betriebszeit des Kompressors (Tc) berechnet wird.
  3. Kältegerät nach Anspruch 1, dadurch gekennzeichnet, dass der Wert der Angabe des vorhergesagten Beginns des Abtauens (Hd 1) mit einem vorherbestimmten Wert verglichen wird, wobei der frühere der beiden als die Zeit zur Aktivierung des nächsten Abtauvorgangs gewählt wird, und der gewählte frühere Wert mit einem oder mehreren Zeitbändern verglichen wird, um die Zweckmäßigkeit zu untersuchen, diesen gewählten früheren Wert dem einem oder einem anderen Zeitband zuzuschreiben, um den tatsächlichen Beginn des nächsten Abtauvorgangs nötigenfalls so vorzuverlegen oder zu verzögern, dass er innerhalb des festgelegten Zeitbands stattfindet.
EP04103090.9A 2003-07-09 2004-06-30 Kühlgerät mit automatischer zeitbestimmter Entfrostung Revoked EP1496324B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04103090T PL1496324T3 (pl) 2003-07-09 2004-06-30 Urządzenie chłodzące z automatycznie określanym czasem odszraniania

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20031395 2003-07-09
IT001395A ITMI20031395A1 (it) 2003-07-09 2003-07-09 Refrigeratore a sbrinamento automatico temporalmente indirizzato.

Publications (2)

Publication Number Publication Date
EP1496324A1 EP1496324A1 (de) 2005-01-12
EP1496324B1 true EP1496324B1 (de) 2013-09-18

Family

ID=33446436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04103090.9A Revoked EP1496324B1 (de) 2003-07-09 2004-06-30 Kühlgerät mit automatischer zeitbestimmter Entfrostung

Country Status (3)

Country Link
EP (1) EP1496324B1 (de)
IT (1) ITMI20031395A1 (de)
PL (1) PL1496324T3 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005059454A1 (en) 2003-12-15 2005-06-30 Arcelik Anonim Sirketi A cooling device and a control method
GB0418297D0 (en) * 2004-08-17 2004-09-15 Imi Cornelius Uk Ltd Improvements in or relating to beverage dispense systems
US8843242B2 (en) 2008-09-15 2014-09-23 General Electric Company System and method for minimizing consumer impact during demand responses
US8548638B2 (en) 2008-09-15 2013-10-01 General Electric Company Energy management system and method
AU2009290588B2 (en) 2008-09-15 2015-11-26 Haier Us Appliance Solutions, Inc. Energy management of household appliances
US9303878B2 (en) 2008-09-15 2016-04-05 General Electric Company Hybrid range and method of use thereof
US8803040B2 (en) 2008-09-15 2014-08-12 General Electric Company Load shedding for surface heating units on electromechanically controlled cooking appliances
US8541719B2 (en) 2008-09-15 2013-09-24 General Electric Company System for reduced peak power consumption by a cooking appliance
US8943845B2 (en) 2009-09-15 2015-02-03 General Electric Company Window air conditioner demand supply management response
US8522579B2 (en) 2009-09-15 2013-09-03 General Electric Company Clothes washer demand response with dual wattage or auxiliary heater
US8943857B2 (en) 2009-09-15 2015-02-03 General Electric Company Clothes washer demand response by duty cycling the heater and/or the mechanical action
US8869569B2 (en) 2009-09-15 2014-10-28 General Electric Company Clothes washer demand response with at least one additional spin cycle
US9032751B2 (en) 2009-10-21 2015-05-19 Diehl Ako Stiftung & Co. Kg Adaptive defrost controller for a refrigeration device
US8801862B2 (en) 2010-09-27 2014-08-12 General Electric Company Dishwasher auto hot start and DSM
CN103017474A (zh) * 2011-09-27 2013-04-03 泰州乐金电子冷机有限公司 冰箱以及冰箱除霜方法
US10309713B2 (en) 2014-10-22 2019-06-04 Honeywell International Inc. Scheduling defrost events and linking refrigeration circuits in a refrigeration system
CN115615084B (zh) * 2021-07-15 2025-12-05 青岛海尔电冰箱有限公司 冰箱预约制冰方法及冰箱

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3898860A (en) * 1974-10-15 1975-08-12 Texas Instruments Inc Automatic defrosting control system
US4327557A (en) * 1980-05-30 1982-05-04 Whirlpool Corporation Adaptive defrost control system
US5415005A (en) * 1993-12-09 1995-05-16 Long Island Lighting Company Defrost control device and method
US5483804A (en) * 1994-03-28 1996-01-16 Sanyo Electric Co., Ltd. Defrost control apparatus for refrigerator
GB2371355B (en) * 2001-01-18 2005-05-25 Jtl Systems Ltd Defrost control method and apparatus
DE10221904A1 (de) * 2002-05-16 2003-12-04 Bsh Bosch Siemens Hausgeraete Gefriergerät mit Abtaufunktion und Betriebsverfahren dafür

Also Published As

Publication number Publication date
EP1496324A1 (de) 2005-01-12
ITMI20031395A1 (it) 2005-01-10
PL1496324T3 (pl) 2013-12-31

Similar Documents

Publication Publication Date Title
EP1496324A1 (de) Kühlgerät mit automatischer zeitbestimmter Entfrostung
US6817195B2 (en) Reduced energy refrigerator defrost method and apparatus
US6631620B2 (en) Adaptive refrigerator defrost method and apparatus
US4297852A (en) Refrigerator defrost control with control of time interval between defrost cycles
CA1228139A (en) Appliance control system
US5564286A (en) Refrigerator defrost control apparatus and method
US6694755B2 (en) Adaptive defrost control device and method
US5493867A (en) Fuzzy logic adaptive defrost control
US6205800B1 (en) Microprocessor controlled demand defrost for a cooled enclosure
US9032751B2 (en) Adaptive defrost controller for a refrigeration device
CN107726712A (zh) 冰箱控制方法及运用该控制方法的冰箱
EP0686818B1 (de) Verfahren zur Steuerung eines Kühlgerätes und ein Gerät zur Durchführung des Verfahrens
US10830523B2 (en) Refrigerator appliance and method of sabbath operation
EP1843111A2 (de) System und Verfahren zum Bestimmen der von einem Abtauheizer abgegebenen Abtauenergie
CN103597305B (zh) 单回路式制冷器具
US4142374A (en) Demand defrost time clock control circuit
US5187941A (en) Method for controlling a refrigerator in low ambient temperature conditions
US4530218A (en) Refrigeration apparatus defrost control
CN100374800C (zh) 具有除霜功能的冷冻器具以及其运行方法
US20020139130A1 (en) Defrost control method for reducing freezer package temperature deviation
US11493260B1 (en) Freezers and operating methods using adaptive defrost
US4358933A (en) Household refrigerator defrost system
US3899896A (en) Automatic defrosting control system
EP0494785A1 (de) Temperatur-Regelsystem für einen Kühlschrank
EP1325271B1 (de) Verfahren zur steuerung eines kältegerätes

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

17P Request for examination filed

Effective date: 20050628

AKX Designation fees paid

Designated state(s): DE FR GB IT PL

17Q First examination report despatched

Effective date: 20070111

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20130703

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT PL

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602004043354

Country of ref document: DE

Effective date: 20131114

REG Reference to a national code

Ref country code: PL

Ref legal event code: T3

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: ARCELIK ANONIM SIRKETI

Effective date: 20140613

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

REG Reference to a national code

Ref country code: DE

Ref legal event code: R026

Ref document number: 602004043354

Country of ref document: DE

Effective date: 20140613

PLAF Information modified related to communication of a notice of opposition and request to file observations + time limit

Free format text: ORIGINAL CODE: EPIDOSCOBS2

PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

PLCK Communication despatched that opposition was rejected

Free format text: ORIGINAL CODE: EPIDOSNREJ1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

APBM Appeal reference recorded

Free format text: ORIGINAL CODE: EPIDOSNREFNO

APBP Date of receipt of notice of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA2O

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

APBQ Date of receipt of statement of grounds of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA3O

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20200512

Year of fee payment: 17

Ref country code: DE

Payment date: 20200617

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20200618

Year of fee payment: 17

Ref country code: PL

Payment date: 20200415

Year of fee payment: 17

Ref country code: IT

Payment date: 20200512

Year of fee payment: 17

REG Reference to a national code

Ref country code: DE

Ref legal event code: R064

Ref document number: 602004043354

Country of ref document: DE

Ref country code: DE

Ref legal event code: R103

Ref document number: 602004043354

Country of ref document: DE

APBU Appeal procedure closed

Free format text: ORIGINAL CODE: EPIDOSNNOA9O

RDAF Communication despatched that patent is revoked

Free format text: ORIGINAL CODE: EPIDOSNREV1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT REVOKED

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

27W Patent revoked

Effective date: 20201125

GBPR Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state

Effective date: 20201125