EP0844451A2 - Verfahren zum Betreiben eines Kühlgerätes - Google Patents
Verfahren zum Betreiben eines Kühlgerätes Download PDFInfo
- Publication number
- EP0844451A2 EP0844451A2 EP97119566A EP97119566A EP0844451A2 EP 0844451 A2 EP0844451 A2 EP 0844451A2 EP 97119566 A EP97119566 A EP 97119566A EP 97119566 A EP97119566 A EP 97119566A EP 0844451 A2 EP0844451 A2 EP 0844451A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fan
- evaporator
- time
- temperature
- cooling
- 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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
-
- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/11—Fan speed control
- F25B2600/112—Fan speed control of evaporator fans
-
- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/062—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation along the inside of doors
-
- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/066—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply
- F25D2317/0665—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply from the top
-
- 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
Definitions
- the invention relates to a method for operating a cooling device with at least a refrigerator, which is cooled by an evaporator, over which the cooling air is conveyed by means of a fan circulating the cooling air in the cooling space, which fan at least approximately during the period of exposure of the evaporator to liquid Refrigerant is put into operation.
- the invention has for its object a method for operating a cooling device propose according to the preamble of claim 1, in which with simple measures Even with large-volume cold storage compartments in the cooling units, the disadvantages of Prior art are avoided.
- This object is achieved according to the invention in that the fan additionally during the interruption of the refrigerant flow to the evaporator is operated.
- the fan at least during the interruption of the refrigerant flow to the evaporator over a time period of exposure to liquid refrigerant serving shortened period of time.
- the period of time is arranged after an end of the period Delay time is provided.
- the fan is started up while avoiding temperature stratification inside the refrigerator, the fan only at the time of one necessary mixture of the cooling air operated. This results in an over the useful life of the cooling device is a not insignificant reduction in runtime for the fan, which results in a certain energy saving. You have took advantage of the knowledge that a temperature layer formation within the Cold room not immediately after the interruption of the refrigerant flow to the evaporator starts.
- the delay time is particularly easy to implement if one had advantage after the next Embodiment of the subject of the invention is provided that the delay time is determined by a predetermined period of time.
- the delay time is provided in a particularly interference-free manner if, after a further advantageous one Embodiment of the subject of the invention is provided that the predetermined Period of time for the delay time by an electronic evaluation circuit is specified.
- the fan is operated particularly effectively and with an optimized lifespan, if after one a further preferred embodiment of the subject matter of the invention is provided, that the time spans are at least approximately the same length and from each other are spaced apart by the delay time.
- the fan is arranged in the lower region of the cooling space and the temperature in this area detecting temperature sensor is activated, the Output signal after reaching a predetermined temperature limit the commissioning of the fan initiates.
- Such a measure is particularly simple and inexpensive and Way already very accurately ensured that the cold room temperature in this, for example for storing vegetables such as cucumbers, salads or the like of the refrigerator compartment should not sink to an unauthorized depth, so that freezing and therefore spoilage this vegetable is specifically prevented.
- the fan by exceeding a predetermined temperature difference is put into operation, which by at least two the room temperature in Cold room temperature sensor is determined, one of which is in the lower region of the Cold room and the other is arranged in the upper area.
- a cooling device 10 designed as a multi-temperature refrigerator has in the middle section its heat-insulating housing 11 has a door 12 on its front side closable as a cold storage compartment designed cooling space 13 on which in vertical Intervals of refrigerated goods shelves made of glass is provided.
- For cooling of the cooling space 13 is on the rear wall opposite the door 12 of the heat-insulating Housing 11 provided a planar evaporator 14, the so-called Coldwall evaporator is formed and which when the temperature of the Cooling room 13 with a not shown, appropriately controlled solenoid valve liquid refrigerant is applied.
- the evaporator 14 extends from the upper area of the cold room 13 to its lower third and takes up almost all of it Width.
- a fan 15 which, like the evaporator 14 is covered by an intermediate wall 16. This is on the cooling surface of the Evaporator 14 facing side with air guide channels 17 which are in outlet openings 18 emerge in the area of the cold room ceiling and which both through deflections and a different heat exchange due to changes in cross-section between the air flow carried therein, which is based on the fan 15 is forcibly conveyed over the evaporator 14 and the cooling surface of the evaporator 14 allow.
- Cooling space 13 Below the evaporator 14 is inside the cold storage compartment Cooling space 13 is a closed-walled container 19 designed as a vegetable dish provided, by its arrangement not only towards the rear wall of the cooling space 13, but an air duct 20 is also formed towards the bottom thereof and towards the door 12, by means of which the cooling air forcibly circulated by the fan 15 after it emerges from the Air outlet openings 18 to achieve a uniform temperature level within of the cooling space 13 to and along the door 12 and ultimately from the suction side the fan 15 is detected.
- a closed-walled container 19 designed as a vegetable dish provided, by its arrangement not only towards the rear wall of the cooling space 13, but an air duct 20 is also formed towards the bottom thereof and towards the door 12, by means of which the cooling air forcibly circulated by the fan 15 after it emerges from the Air outlet openings 18 to achieve a uniform temperature level within of the cooling space 13 to and along the door 12 and ultimately from the suction side the fan 15 is detected.
- the fan 15 is activated to generate the uniform temperature level within the cooling space 13 during the entire period t k provided for the application of liquid refrigerant to the evaporator 14. After reaching the intended cold room temperature, the fan 15 is put out of operation simultaneously with the interruption of the refrigerant flow to the evaporator 14. Subsequently, during the time in which the refrigerant flow to the evaporator 14 is interrupted, the fan 15 is started up again after a delay time t v for a period of time t y , the period of time t y being significantly shorter than the period t k, which corresponds to the time for the application of the evaporator 14 with liquid refrigerant.
- the brief start-up of the fan 15 over the period t y is repeated within a period of idle time between two periods t k serving the evaporator 14 with liquid refrigerant, depending on, for example, empirically determined need, with each time between the periods t y Delay time t v is provided.
- the number of time periods t y provided for brief operation of the fan 15 is determined by the duration of the delay time t v and the duration of the idle time between two time periods t k , with tests for a cold room with a cold room volume of approximately 0 , 2 m 3, a delay time t v of 10 minutes and a time span t y of two minutes have already given good results with regard to a significant reduction in the temperature stratification within the cooling space 13.
- the control of the fan according to the invention results 15 between the measuring points I to III clearly compared to the prior art reduced temperature stratification and at the same time a temperature inside the vegetable skin 19, which is clearly above the freezing point, so that stored goods are stored therein such as cucumber or salads or the like cannot freeze.
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)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
- Fig. 1
- den von einer Tür verschlossenen, mit zur zwangsweisen Luftumwälzung mittels eines Ventilators ausgestatteten mittleren Abschnitt eines als Mehrtemperaturen-Kühlschrank ausgebildeten Kühlgerätes, von der Seite gesehen, im Schnitt,
- Fig. 2
- ein schematisch dargestelltes Ansteuerdiagramm für den Ventilator und
- Fig. 3
- ein Diagramm zur Darstellung der anhand der erfindungsgemäßen Ventilatoransteuerung erreichten Temperaturschichtung innerhalb des Kühlraumes im Vergleich zum Stand der Technik.
Claims (10)
- Verfahren zum Betreiben eines Kühlgerätes mit wenigstens einem Kühlraum, welcher von einem Verdampfer gekühlt ist, über welchem die Kühlluft mittels eines die Kühlluft im Kühlraum umwälzenden Ventilators gefördert ist, welcher zumindest annähernd während des Zeitabschnittes der Beaufschlagung des Verdampfers mit flüssigem Kältemittel in Betrieb gesetzt ist, dadurch gekennzeichnet, daß der Ventilator (15) zusätzlich während der Unterbrechung des Kältemittelflusses zum Verdampfer (14) betrieben ist.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Ventilator (15) während der Unterbrechung des Kältemittelflusses zum Verdampfer (14) zumindest über eine hinsichtlich des zur Beaufschlagung mit flüssigem Kältemittel dienenden Zeitabschnittes (tk) verkürzte Zeitspanne (ty) betrieben ist.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die Zeitspanne (ty) im Anschluß an eine nach Abschluß des Zeitabschnittes (tk) angeordnete Verzögerungszeit (tv) vorgesehen ist.
- Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß die Verzögerungszeit (tv) durch eine vorbestimmte Zeitdauer festgelegt ist.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die vorbestimmte Zeitdauer für die Verzögerungszeit (tv) durch eine elektronische Auswerteschaltung vorgegeben ist.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die vorbestimmte Zeitdauer für die Verzögerungszeit (tv) durch ein Softwaresteuerung realisiert ist.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß mehrere Zeitspannen (ty) im Anschluß an den, die Beaufschlagung des Verdampfers mit flüssigem Kältemittel ausmachenden Zeitabschnitt (tk) vorgesehen sind.
- Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß die Zeitspannen (ty) zumindest annähernd gleichlang bemessen sind und voneinander jeweils durch die Verzögerungszeit (tv) zeitlich beabstandet sind.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Ventilator (15) durch zumindest einen im unteren Bereich des Kühlraumes (13) angeordneten und die Temperatur in diesem Bereich erfassenden Temperaturfühler in Betrieb gesetzt ist, dessen Ausgangssignal nach dem Erreichen einer vorbestimmten Temperaturgrenze die Inbetriebnahme des Ventilators (15) einleitet.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Ventilator (15) durch das Überschreiten einer vorgegebenen Temperaturdifferenz in Betrieb gesetzt ist, welche durch wenigstens zwei die Raumtemperatur im Kühlraum (13) erfassende Temperaturfühler ermittelt ist, von denen einer im unteren Bereich des Kühlraumes (13) und der andere in dessen oberem Bereich angeordnet ist.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK97119566T DK0844451T3 (da) | 1996-11-18 | 1997-11-07 | Fremgangsmåde til drift af et köleapparat |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996147642 DE19647642A1 (de) | 1996-11-18 | 1996-11-18 | Verfahren zum Betreiben eines Kühlgerätes |
DE19647642 | 1996-11-18 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0844451A2 true EP0844451A2 (de) | 1998-05-27 |
EP0844451A3 EP0844451A3 (de) | 2000-10-11 |
EP0844451B1 EP0844451B1 (de) | 2004-06-09 |
Family
ID=7812003
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19970119566 Expired - Lifetime EP0844451B1 (de) | 1996-11-18 | 1997-11-07 | Verfahren zum Betreiben eines Kühlgerätes |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0844451B1 (de) |
DE (2) | DE19647642A1 (de) |
DK (1) | DK0844451T3 (de) |
ES (1) | ES2222493T3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012172051A3 (en) * | 2011-06-16 | 2013-09-26 | A.P. Møller - Mærsk A/S | Internal air circulation control in a refrigerated transport container |
WO2018067095A3 (en) * | 2016-08-08 | 2018-07-12 | Arcelik Anonim Sirketi | Refrigeration appliance with zero degree compartment having improved temperature control |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20001253U1 (de) * | 2000-01-25 | 2001-06-07 | Liebherr Hausgeraete | Kühlgerät mit einem Kühl-, einem Kaltlager- und einem Gefrierfach |
DE10260350B4 (de) * | 2002-07-04 | 2015-11-26 | Lg Electronics Inc. | Verfahren zur Steuerung eines Betriebs eines mit zwei Verdampfern ausgebildeten Kühlsystems |
DE10235781A1 (de) * | 2002-08-05 | 2004-03-04 | BSH Bosch und Siemens Hausgeräte GmbH | Kältegerät |
DE102010055904A1 (de) * | 2010-11-05 | 2012-05-10 | Liebherr-Hausgeräte Ochsenhausen GmbH | Kühl- und/oder Gefriergerät |
CN115265046B (zh) * | 2021-04-29 | 2023-08-15 | 青岛海尔电冰箱有限公司 | 冰箱及其控制方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3103797A (en) * | 1961-03-30 | 1963-09-17 | Hupp Corp | Refrigerators |
US4485633A (en) * | 1982-10-18 | 1984-12-04 | The Coca-Cola Company | Temperature-based control for energy management system |
DE3804246C1 (de) * | 1988-02-11 | 1989-03-02 | Friedhelm 5920 Bad Berleburg De Meyer | |
US5490394A (en) * | 1994-09-23 | 1996-02-13 | Multibras S/A Eletrodomesticos | Fan control system for the evaporator of refrigerating appliances |
US5931011A (en) * | 1998-06-23 | 1999-08-03 | Hoshizaki Denki Kabushiki Kaisha | Low temperature storage cabinet |
-
1996
- 1996-11-18 DE DE1996147642 patent/DE19647642A1/de not_active Ceased
-
1997
- 1997-11-07 ES ES97119566T patent/ES2222493T3/es not_active Expired - Lifetime
- 1997-11-07 DK DK97119566T patent/DK0844451T3/da active
- 1997-11-07 EP EP19970119566 patent/EP0844451B1/de not_active Expired - Lifetime
- 1997-11-07 DE DE59711699T patent/DE59711699D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
None |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012172051A3 (en) * | 2011-06-16 | 2013-09-26 | A.P. Møller - Mærsk A/S | Internal air circulation control in a refrigerated transport container |
WO2018067095A3 (en) * | 2016-08-08 | 2018-07-12 | Arcelik Anonim Sirketi | Refrigeration appliance with zero degree compartment having improved temperature control |
Also Published As
Publication number | Publication date |
---|---|
DE59711699D1 (de) | 2004-07-15 |
DK0844451T3 (da) | 2004-10-18 |
EP0844451A3 (de) | 2000-10-11 |
EP0844451B1 (de) | 2004-06-09 |
DE19647642A1 (de) | 1998-05-20 |
ES2222493T3 (es) | 2005-02-01 |
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