EP1037003A2 - Gefriergerät - Google Patents
Gefriergerät Download PDFInfo
- Publication number
- EP1037003A2 EP1037003A2 EP99125803A EP99125803A EP1037003A2 EP 1037003 A2 EP1037003 A2 EP 1037003A2 EP 99125803 A EP99125803 A EP 99125803A EP 99125803 A EP99125803 A EP 99125803A EP 1037003 A2 EP1037003 A2 EP 1037003A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature
- freezer
- compressor
- during
- 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
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
- F25D21/006—Defroster control with electronic control circuits
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
Definitions
- the invention relates to a freezer with a blower that is forced to Cooling circulating air via an evaporator, a compressor and a condenser including cooling circuit, and with a heater that during defrosting phases, during which preferably the compressor and the blower are out of operation, defrost the evaporator.
- the temperature in the frozen food increases during the defrosting phases from the target value of approximately -18 ° C to a temperature in the range from -16 ° C to -17 ° C.
- the object of the invention is therefore to provide a freezer of the type mentioned to create, in which no undesirable temperature increase during the defrosting phases in the frozen food above the target value.
- this object is achieved in that a control device is provided that the temperature in the freezer compartment or in the frozen goods to a value below the target value.
- the freezer it is ensured that during the defrosting phases the temperature in the frozen food does not rise above the target value since before each defrost phase by temporarily lowering the freezer compartment and frozen food temperature a cold reserve is created during the defrost phase ensures that the temperature in the frozen food does not exceed the setpoint increases.
- the control device which is usually an electronic control device deals with a microprocessor, knows the defrost phases so that they the temperature drop in a reasonable time before the start of the defrosting phase can initiate and make.
- the melting of the ice layer formed on the evaporator takes place during the defrost phase in a known manner, for example by electricity or heating gas.
- the temperature drop before each defrost phase can be due to a longer run time of the compressor, through a higher compressor output and also by increasing the speed of the fan.
- the compressor performance can be easily Way with variable speed compressors by increasing the compressor speed cause.
- the temperature drop before each defrost phase can be about 1 ° C below the target value respectively. Larger or smaller reductions can be appropriate.
- the control device can lower the temperature in the freezer compartment done in a simple manner before each defrosting phase in that the control device the switch-off value for the thermostat in the freezer lowers the lower value.
- the temperature is plotted against time in the diagram.
- Diagram shows the solid horizontal line 1 the target temperature of the Refrigerated goods, which is around -18 ° C.
- the temperature in the freezer rises and falls sinusoidally, namely according to the switching on and off of the compressor, which is via a temperature sensor is controlled by the electronic control of the freezer.
- the sinusoidal temperature profile is due to the wavy line 2 in the left part of the diagram shown, the highest temperatures just about with the target value 1 match.
- a lowering takes place before the defrosting phase the freezer compartment temperature and thus also the temperature of the frozen goods between the lines characterizing the area of the temperature drop. Is the temperature of the frozen goods has been reduced to about -20 ° C to -21 ° C the compressor and the blower are switched off and it will start defrosting of the evaporator started.
- the vertical Dashes the temperature in the freezer and in the frozen food increases on, but only in the manner shown below the target value 1.
- the defrost phase has the temperature of the frozen food, as can be seen in the diagram, has not yet reached the target value, but is still below this, so that normal freezing can be resumed without the Temperature has risen above the set temperature.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Defrosting Systems (AREA)
- Saccharide Compounds (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
Description
Claims (6)
- Gefriergerät mit einem Gebläse, das zwangsweise zu kühlende Umluft über einen Verdampfer eines einen Kompressor und einen Kondensator einschließenden Kältekreislaufs führt, und mit einer Heizeinrichtung, die während Abtauphasen, während der vorzugsweise der Kompressor und das Gebläse außer Betrieb sind, den Verdampfer abtaut,
dadurch gekennzeichnet,
daß eine Steuereinrichtung vorgesehen ist, die vor jeder Abtauphase die Temperatur in dem Gefrierraum bzw. dem Gefriergut auf einen Wert unter dem Soll-Wert absenkt. - Gefriergerät nach Anspruch 1, dadurch gekennzeichnet, daß die Temperaturabsenkung durch eine längere Laufzeit des Kompressors erfolgt.
- Gefriergerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Temperaturabsenkung durch eine höhere Kompressorleistung erfolgt.
- Gefriergerät nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Temperaturabsenkung durch Drehzahlerhöhung des Gebläses erfolgt.
- Gefriergerät nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Temperaturabsenkung etwa 1°C unter den Soll-Wert beträgt.
- Gefriergerät nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Steuereinrichtung vor jeder Abtauphase den Ausschaltwert für den im Gefrierraum befindlichen Thermostat auf den tieferen Wert setzt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19911979 | 1999-03-17 | ||
DE19911979A DE19911979A1 (de) | 1999-03-17 | 1999-03-17 | Gefriergerät |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1037003A2 true EP1037003A2 (de) | 2000-09-20 |
EP1037003A3 EP1037003A3 (de) | 2000-10-25 |
EP1037003B1 EP1037003B1 (de) | 2003-06-25 |
Family
ID=7901358
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99125803A Expired - Lifetime EP1037003B1 (de) | 1999-03-17 | 1999-12-23 | Gefriergerät |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1037003B1 (de) |
AT (1) | ATE243452T1 (de) |
DE (2) | DE19911979A1 (de) |
ES (1) | ES2203000T3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112050532A (zh) * | 2020-09-15 | 2020-12-08 | 长虹美菱股份有限公司 | 一种单系统冰箱恒温间室及其控制方法 |
IT202100000182A1 (it) * | 2021-01-07 | 2022-07-07 | Carel Ind Spa | Metodo di azionamento di un’apparecchiatura frigorifera e apparecchiatura frigorifera |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114353299B (zh) * | 2021-12-07 | 2023-06-16 | 珠海格力电器股份有限公司 | 空调系统的控制方法及空调系统 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4569205A (en) * | 1983-07-25 | 1986-02-11 | Kabushiki Kaisha Toshiba | Electric refrigerator having improved freezing and defrosting characteristics |
US4646536A (en) * | 1984-10-05 | 1987-03-03 | Kabushiki Kaisha Toshiba | Refrigeration with automatic defrost and rapid cooling |
US5038575A (en) * | 1987-02-14 | 1991-08-13 | Kabushiki Kaisha Toshiba | Refrigerator with defrost override system |
JPH09138045A (ja) * | 1995-11-15 | 1997-05-27 | Matsushita Refrig Co Ltd | 冷蔵庫の運転制御装置 |
-
1999
- 1999-03-17 DE DE19911979A patent/DE19911979A1/de not_active Withdrawn
- 1999-12-23 EP EP99125803A patent/EP1037003B1/de not_active Expired - Lifetime
- 1999-12-23 ES ES99125803T patent/ES2203000T3/es not_active Expired - Lifetime
- 1999-12-23 AT AT99125803T patent/ATE243452T1/de not_active IP Right Cessation
- 1999-12-23 DE DE59906091T patent/DE59906091D1/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4569205A (en) * | 1983-07-25 | 1986-02-11 | Kabushiki Kaisha Toshiba | Electric refrigerator having improved freezing and defrosting characteristics |
US4646536A (en) * | 1984-10-05 | 1987-03-03 | Kabushiki Kaisha Toshiba | Refrigeration with automatic defrost and rapid cooling |
US5038575A (en) * | 1987-02-14 | 1991-08-13 | Kabushiki Kaisha Toshiba | Refrigerator with defrost override system |
JPH09138045A (ja) * | 1995-11-15 | 1997-05-27 | Matsushita Refrig Co Ltd | 冷蔵庫の運転制御装置 |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 09, 30. September 1997 (1997-09-30) & JP 09 138045 A (MATSUSHITA REFRIG CO LTD), 27. Mai 1997 (1997-05-27) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112050532A (zh) * | 2020-09-15 | 2020-12-08 | 长虹美菱股份有限公司 | 一种单系统冰箱恒温间室及其控制方法 |
IT202100000182A1 (it) * | 2021-01-07 | 2022-07-07 | Carel Ind Spa | Metodo di azionamento di un’apparecchiatura frigorifera e apparecchiatura frigorifera |
EP4027082A1 (de) * | 2021-01-07 | 2022-07-13 | Carel Industries S.p.A. | Verfahren zur betätigung eines kühlgeräts und kühlgerät |
Also Published As
Publication number | Publication date |
---|---|
EP1037003B1 (de) | 2003-06-25 |
EP1037003A3 (de) | 2000-10-25 |
DE59906091D1 (de) | 2003-07-31 |
DE19911979A1 (de) | 2000-09-28 |
ATE243452T1 (de) | 2003-07-15 |
ES2203000T3 (es) | 2004-04-01 |
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