EP1200782B1 - Refrigerator cooling - Google Patents

Refrigerator cooling Download PDF

Info

Publication number
EP1200782B1
EP1200782B1 EP00944567A EP00944567A EP1200782B1 EP 1200782 B1 EP1200782 B1 EP 1200782B1 EP 00944567 A EP00944567 A EP 00944567A EP 00944567 A EP00944567 A EP 00944567A EP 1200782 B1 EP1200782 B1 EP 1200782B1
Authority
EP
European Patent Office
Prior art keywords
fresh food
food compartment
compartment
quick freeze
quick
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
EP00944567A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1200782A1 (en
Inventor
Haldun Arçelik A.S. Dingeç
Yüksel Arçelik A.S. ATILLA
Yalçin Arçelik A.S. Güldali
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP1200782A1 publication Critical patent/EP1200782A1/en
Application granted granted Critical
Publication of EP1200782B1 publication Critical patent/EP1200782B1/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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
    • 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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • 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
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0251—Compressor control by controlling speed with on-off operation
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/04—Refrigerators with a horizontal mullion
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/30—Quick freezing
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/34—Temperature balancing devices
    • 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
    • F25D2700/12—Sensors measuring the inside temperature

Definitions

  • the present invention is related to providing the freezing capacity in the freezer compartment, at least in conformity with the standards, without lowering the interior temperature in the fresh food compartment below the desired level, in two-door type refrigerators having both the freezer and fresh food compartments.
  • the "Quick Freeze” operation is used in order to lower the temperature of the food placed in the freezer compartment, rapidly to -18°C.
  • the quick freeze capacity is the maximum amount of food that can be frozen in a certain time period, during the quick freeze process.
  • the thermostat When the quick freeze process is started, the thermostat reaches its highest value and the refrigerator operates at 100% capacity. By delaying the compressor operational period, the freezer compartment can reach the desired freezing capacity. However, in this case the inner temperature of the fresh food compartment drops below the desired level and causes the freezing of the fresh food.
  • the fresh food and freezer compartments are cooled by separate cooling circuits, using two compressors. Furthermore, this problem is solved by reducing the quick freezer capacity. In another known technique, this problem has been solved by changing the dimensions of the evaporator in the fresh food compartment. However this change increases the energy consumption.
  • the object of the present invention is to increase the freezing capacity of the double-compartment type refrigerator, the cooling system of which has been designed as a single cooling system with a single compressor and a single control center.
  • Another object of the invention is to avoid the freezing of the food in the fresh food compartment, by preventing the inner temperature of the fresh food compartment from falling below the desired level.
  • the total running time (t quick ) of the Quick Freeze is equal to the sum of the quick freeze 100% running time (t 100 ) and the quick freeze cyclic running times (t cycle ).
  • the duration and temperature values at which the compressor (7) must be operated for the quick freeze process and the operational period of the heater (5) placed in the fresh food compartment (1) to avoid the decrease of the inner temperature of the fresh food compartment (1) during quick freezing, as well as the temperature value at which the heater has to be operated are determined in the control unit (8).
  • the quick freeze process starts and during this process, the control unit (8) performs the below explained operations in order to keep the inner temperature of the fresh food compartment (1) within a range (T Max ,T Min ), determined by the manufacturer or by the standards.
  • T Max ,T Min a range
  • the 100% running time (t 100 ) of the quick freeze function and the estimated duration (t 1 ) of quick freezing, determined by the manufacturer are compared in Step 102.
  • step 104 the temperature sensor (6) placed in the fresh food compartment (1) reads the inner temperature of the said compartment (1) and the control unit (8) compares the values thus obtained, with the upper limit value (T Max ) of the required temperature range for the fresh food compartment determined by the manufacturer. If the inner temperature value in fresh food compartment (1) that is read by the sensor (6) is greater than the upper limit value (T Max ) of the required temperature range for the fresh food compartment determined by the manufacturer, the electrical heater (5) placed in the refrigerator fresh food compartment (1) to maintain required cooling and to avoid the freezing of the food in case the said compartment (1) is excessively cooled, is closed in Step 105 and Step 108 wherein the cyclic running time (t cycle ) of the quick freeze is compared with the estimated quick freeze operation time (t 1 ) starts.
  • Step 108 if the estimated quick freeze operation time (t 1 ) determined by the manufacturer is greater than the cycle running time (t cycle ) of the quick freeze, the quick freeze operation is terminated and normal cooling is carried on. Otherwise, i.e. if the estimated quick freeze operation time (t 1 ) determined by the manufacturer is smaller than the cyclic running time (t cycle ) of the quick freeze, Step 102 starts and the 100% running time (t 100 ) of the quick freeze function and the estimated duration (t 1 ) of quick freezing, determined by the manufacturer are compared.
  • the inner temperature value in the fresh food compartment (1) that is read by the sensor (6) is smaller than the upper limit value (T Max ) of the required temperature range for the fresh food compartment determined by the manufacturer in Step 104 then the inner temperature value in the fresh food compartment (1) that is read by the sensor (6) is compared with the lower limit value (T Min ) of the required temperature range for the fresh food compartment determined by the manufacturer in Step 106.
  • Step 106 if the inner temperature value in the fresh food compartment (1) that is read by the sensor (6) is smaller than the lower limit value (T Min ) of the required temperature range for the fresh food compartment determined by the manufacturer, the electrical heater (5) placed in the refrigerator fresh food compartment (1) to maintain required cooling and to avoid the freezing of the food in case the said compartment (1) is excessively cooled, operates in Step 107 then Step 108 starts.
  • T Min the lower limit value
  • Step 102 wherein the 100% running time (t 100 ) of the freeze function and the estimated duration (t 1 ) of quick freezing, determined by the manufacturer are compared, if the 100% running time (t 100 ) of the quick freeze function is smaller than the estimated duration (t 1 ) of quick freezing, determined by the manufacturer, step 104 starts and the temperature sensor (6) placed in the fresh food compartment (1) reads the inner temperature of the said compartment (1) and these values are compared with the upper limit value (T Max ) of the required temperature range for the fresh food compartment determined by the manufacturer. If the inner temperature of the said compartment (1) is bigger than the upper limit value (T Max ) of the required temperature range for the fresh food compartment determined by the manufacturer, the compressor (7) operates in Step 109 and then Step 108 starts.
  • Step 104 if the inner temperature value in the fresh food compartment (1) that is read by the sensor (6) is smaller than the upper limit value (T Max ) of the required temperature range for the fresh food compartment determined by the manufacturer; Step 106 starts and the inner temperature value in the fresh food compartment (1) that is read by the sensor (6) is compared with the lower limit value (T Min ) of the required temperature range for the fresh food compartment determined by the manufacturer.
  • Step 106 if the inner temperature value in the fresh food compartment (1) that is read by the sensor (6) is smaller than the lower limit value (T Min ) of the required temperature range for the fresh food compartment determined by the manufacturer, the compressor (7) is kept at "OFF" position in all cases and then Step 108 starts.
  • step 106 if the inner temperature value in the fresh food compartment (1) that is read by the sensor (6) is greater than the lower limit value (T Min ) of the required temperature range for the fresh food compartment determined by the manufacturer, the program determined by the control unit (8) is completed in Step 108 (Fig. 2 and Fig 3).
  • FIG. 4 Another embodiment of the refrigerator quick freeze function is illustrated in Figures 4 and 5 and will be described in detail as follows:
  • the control unit (8) maintains the inner temperature of the fresh food compartment (1) within the temperature range (T Max , T Min ) as determined by the manufacturer or by the standards, during the quick freeze process by operating the compressor (7) at 100% capacity and by operating the heater (5) cyclically when the quick freeze button (201) is pressed.
  • the process is illustrated in Figure 4. In this case, the total running time (t quick ) and 100% capacity running time (t 100 ) of the Quick Freeze are equal. During this period, the compressor (7) works at 100% capacity.
  • the control unit (8) maintains the inner temperature of the fresh food compartment (1) within the temperature range (T Max - T Min ) defined by the manufacturer or by the standards, during the quick freeze operation.
  • step 202 the compressor (7) runs at 100% capacity during the 100% capacity running time (t 100 ) of the Quick Freeze; in Step 203, the temperature sensor (6) placed in the fresh food compartment (1) reads the inner temperature of the said compartment (1) and these values are compared with the upper limit value (T Max ) of the required temperature range for the fresh food compartment determined by the manufacturer.
  • T Max the upper limit value
  • Step 207 if the estimated quick freeze operation time (t 1 ) determined by the manufacturer is greater than the total running time (t quick ), the quick freeze operation is terminated and normal cooling is carried on. Otherwise, i.e. if the estimated quick freeze operation time (t 1 ) determined by the manufacturer is smaller than the total running time (t quick ), the process returns back to Step 202.
  • Step 203 if the inner temperature value in the fresh food compartment (1) that is read by the sensor (6) is smaller than the upper limit value (T Max ) of the required temperature range for the fresh food compartment determined by the manufacturer, step 205 where the inner temperature value in the fresh food compartment (1) that is read by the sensor (6) is compared with the lower limit value (T Min ) of the required temperature range for the fresh food compartment determined by the manufacturer, starts.
  • Step 205 if the inner temperature value in the fresh food compartment (1) that is read by the sensor (6) is smaller than the lower limit value (T Min ) of the required temperature range for the fresh food compartment determined by the manufacturer, the electrical heater (5) placed in the refrigerator fresh food compartment (1) to maintain the required cooling and to avoid the freezing of the food in case the said compartment (1) is excessively cooled operates in Step 206, then Step 207 starts.
  • T Min the lower limit value
  • Step 205 if the inner temperature value in the fresh food compartment (1) that is read by the sensor (6) is greater than the estimated quick freeze operation time (t 1 ) determined by the manufacturer the electrical heater (5) placed in the refrigerator fresh food compartment (1) to maintain the required cooling and to avoid the freezing of the food in case the said compartment (1) is excessively cooled, is closed in Step 204 and then Step 207 starts ( Figures 4 and 5).

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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP00944567A 1999-06-04 2000-06-05 Refrigerator cooling Expired - Lifetime EP1200782B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
TR9901264 1999-06-04
TR9901264 1999-06-04
PCT/TR2000/000034 WO2000075582A1 (en) 1999-06-04 2000-06-05 Refrigerator cooling

Publications (2)

Publication Number Publication Date
EP1200782A1 EP1200782A1 (en) 2002-05-02
EP1200782B1 true EP1200782B1 (en) 2004-03-31

Family

ID=21622009

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00944567A Expired - Lifetime EP1200782B1 (en) 1999-06-04 2000-06-05 Refrigerator cooling

Country Status (7)

Country Link
EP (1) EP1200782B1 (es)
AT (1) ATE263345T1 (es)
AU (1) AU5864700A (es)
DE (1) DE60009512T2 (es)
ES (1) ES2218181T3 (es)
TR (1) TR200103790T2 (es)
WO (1) WO2000075582A1 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6993920B2 (en) * 2004-01-30 2006-02-07 Carrier Corporation Heater cycling for improved oil return
EP1730456A1 (en) * 2004-03-25 2006-12-13 Arcelik Anonim Sirketi A cooling device and a control method thereof
DE202007017690U1 (de) * 2007-10-26 2009-03-19 Liebherr-Hausgeräte Lienz Gmbh Kühl- und/oder Gefriergerät
EP2397798B1 (en) 2010-06-18 2016-01-27 Vestel Beyaz Esya Sanayi Ve Ticaret A.S. Heater control unit for cooler devices
CN102620516B (zh) * 2012-03-30 2014-08-06 合肥美菱股份有限公司 一种电冰箱温度设置方法
CN112856920B (zh) * 2019-11-12 2023-01-24 合肥美的电冰箱有限公司 冰箱速冻控制方法、风冷冰箱及可读存储介质

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0169457B1 (ko) * 1996-01-23 1999-01-15 김광호 냉장고의 급속냉각 제어방법
JPH11211312A (ja) * 1998-01-28 1999-08-06 Matsushita Refrig Co Ltd 冷蔵庫

Also Published As

Publication number Publication date
AU5864700A (en) 2000-12-28
TR200103790T2 (tr) 2002-05-21
ATE263345T1 (de) 2004-04-15
DE60009512T2 (de) 2005-03-17
DE60009512D1 (de) 2004-05-06
EP1200782A1 (en) 2002-05-02
WO2000075582A1 (en) 2000-12-14
ES2218181T3 (es) 2004-11-16

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