EP0837294A2 - Kühleinrichtung und Verfahren zur Überwachung einer Kühleinrichtung - Google Patents
Kühleinrichtung und Verfahren zur Überwachung einer Kühleinrichtung Download PDFInfo
- Publication number
- EP0837294A2 EP0837294A2 EP97117710A EP97117710A EP0837294A2 EP 0837294 A2 EP0837294 A2 EP 0837294A2 EP 97117710 A EP97117710 A EP 97117710A EP 97117710 A EP97117710 A EP 97117710A EP 0837294 A2 EP0837294 A2 EP 0837294A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling
- monitoring
- cooling device
- circuit
- temperature
- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/10—Sorption machines, plants or systems, operating continuously, e.g. absorption type with inert gas
-
- 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
- F25B49/005—Arrangement or mounting of control or safety devices of 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2104—Temperatures of an indoor room or compartment
-
- 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
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
-
- 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
- F25B2700/21—Temperatures
- F25B2700/2117—Temperatures of an evaporator
-
- 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
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/008—Alarm devices
Definitions
- the invention relates to a cooling device and a method for monitoring a cooling device.
- Such cooling devices are both in Households as well as a somewhat smaller version in hotel rooms as a minibar used, the latter for reasons of energy saving and because the lower background noise in the hotel room, in which usually a guest also stayed overnight, mostly as absorption cooling units.
- cooling devices are operated with refrigerants that a harmful impact on the environment, especially on humans, when they come out of the cooling circuit. This is how compressor chillers work mostly with a refrigerant containing fluorocarbon, which is disposed of as special waste when the refrigerators are scrapped.
- a method for monitoring a cooling device is also to be provided with which malfunctions can be easily identified.
- the method according to the invention is intended for a large number of cooling devices, mass-produced, applicable, and existing refrigerators should be retrofittable with the monitoring device.
- control device of a cooling device with a monitoring device which can identify malfunctions, it is possible to use the cooling device turn off so that the amount of escaping from the cooling circuit Refrigerant is limited. If the monitoring device in the control device existing cooling devices can be integrated into the cooling device can be retrofitted without a monitoring device, so that the existing cooling devices can continue to be used.
- the cooling circuit is through formed an absorption cycle, since this is often used in hotel rooms and there is an increased need to avoid accidents.
- absorption cycles ammonia is often used as the refrigerant used, which smells bad at a discharge and causes dizziness can.
- a simple and inexpensive embodiment of the monitoring device has a temperature sensor with which an operating temperature the cooling circuit is detected.
- the temperature sensor is preferably on the evaporator of the absorption circuit, because there is a rapid deviation of the specified temperature occurs in the event of an accident. This also has the Advantage that an existing cooling device only with an additional Sensor must be provided, which is connected to the monitoring device is.
- a temperature sensor to determine the ambient temperature and a temperature sensor for determining the temperature to be provided in the cold room so that the monitoring device has greater security in the display of incidents.
- the reliability of the fault report is further increased if an additional sensor is connected to the Cold storage door is provided, which emits a signal when the Door is open.
- the monitoring device can thus switch between one state distinguish in which the door is open or closed so that the Control device is aligned accordingly.
- detecting the fill level of a storage container of the absorption circuit In order to rule out errors in the determination of malfunctions as completely as possible, are preferably means for detecting the fill level of a storage container of the absorption circuit. This can be done in the reservoir known swimmers can be provided.
- Another way of supplying the monitoring device with data, with which an accident can be concluded is the providence of Means for detecting the pressure in the cooling circuit.
- At least one Place on the cooling circuit determines the temperature and with a predetermined Temperature compared to a set cooling capacity, so that if the two temperature values differ from one another a predetermined area of the cooling circuit is switched off.
- the state of a Door closing the refrigerator compartment is determined, so that this malfunction of the control device can be displayed separately, preferably a signal lamp the cooling device or an acoustic signal turns on to the operator to assign the open door.
- Figure 1 shows schematically one Cooling circuit of a cooling device, which is designed as an absorption circuit is.
- An expeller 1 is designed as a tube and is replaced by an electrical one Heating tube 3 and a gas heating tube 4 heated. It is also possible to use only one heating tube 3 or to provide only one gas heating pipe 4.
- a pump tube 2 arranged concentrically, in which there is a rich ammonia-water solution located. By heating the expeller 1 and the pump tube 2 the boiling point of ammonia, which is lower than that of water, is exceeded, so that ammonia vapor goes up in the pump tube due to the Differences in density is driven out.
- the pump tube 2 acts as a thermosiphon pump, there between emerging steam bubbles in the pump tube 2 including small amounts of the degassed ammonia and thus poor solution and is guided upwards in the pump tube 2. At the top of the Pump tube 2, the poor solution emerges from the pump tube 2 and starts up the outside of the pump tube 2 in the expeller 1 downwards.
- the vaporous ammonia emerging from the pump tube 2 becomes one Condenser 5 out, which is provided with heat dissipation 6 with cooling fins. After passing through a water separator, the ammonia vapor is in the Condenser 5 condenses.
- the actual cooling capacity is at the subsequent evaporation of the ammonia achieved.
- the liquid ammonia in an ammonia tube 7 the evaporator 9 performed as a coil evaporator with two or three is concentrically formed into one another.
- the liquid ammonia is close to being injected into the evaporator the lowest evaporator temperature has cooled.
- an auxiliary gas, for example hydrogen contained in the evaporator 9, so that the phase transition is accelerated.
- the absorber 12 is a coil absorber, which is in the countercurrent process operated, trained, the heavy, loaded with ammonia hydrogen from the gas heat exchanger 10 via a return pipe 13 to a lower one Storage container 15 with connected pipe coil absorber 12 flows.
- the ammonia is from the in the reservoir 15 and 12 absorber contained ammonia solution absorbed so that the hydrogen from the subsequent enriched ammonia-hydrogen mixture via the absorber 12 in countercurrent to the solution.
- For pressure equalization between a compensating tube 8 and a poor solution tube 14 are provided for the lines.
- the reservoir 15 is at its lower area with a feed line 17, which is surrounded concentrically in a heat exchanger tube. In the heat exchanger tube 16 poor solution from the expeller 1 is supplied and rich solution discharged in the feed line 17.
- the cooling device is first monitored by detecting the Temperature at the evaporator 9 via the temperature sensor 19.
- the determined Value is passed on to the control device of the cooling device and in Dependency on the heating power set at expeller 1 with a predetermined one Reference value compared. Softens the evaporator temperature in one a certain amount above the specified value due to an accident, the Control device of the cooling device, the heating devices on the expeller overridden so that no more ammonia is evaporated and the level at escaping ammonia is limited. Switching off the cooling device can be indicated by a control lamp.
- the cooling device has a contact sensor, which determines whether a door of the cooling device is closed or open state.
- the monitoring device takes into account the state of the open door, so that the fault monitoring is brief Temperature changes not responding.
- a pressure sensor is also provided on the storage container 15, a possible pressure drop in the cooling circuit to the monitoring device Report to.
- a is not in the reservoir 15 shown float provided for determining the level, wherein the level is passed on to the monitoring device.
- the Monitoring device compares the incoming data with specified ones Evaluate and turn off heaters 3 and 4 when single data or their combination indicate an accident.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Sorption Type Refrigeration Machines (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
Description
Claims (11)
- Kühleinrichtung, insbesondere Kühlschrank für ein Hotelzimmer, mit einem verschließbaren Kühlraum und einem Kühlkreislauf, der durch einen Absorptionskreislauf gebildet ist, der einen Absorber (12), einen Austreiber (1), einen Kondensator (5) und einen Verdampfer (9) umfaßt, wobei zur Steuerung der Kühleinrichtung eine Steuereinrichtung vorgesehen ist, dadurch gekennzeichnet, daß die Steuereinrichtung mit einer Überwachungseinrichtung zur Ermittlung von Störfällen versehen ist.
- Kühleinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Überwachungseinrichtung mindestens einen Temperaturfühler (19) aufweist.
- Kühleinrichtung nach Anspruch 2, dadurch gekennzeichnet, daß ein Temperaturfühler (19) am Verdampfer (9) positioniert ist.
- Kühleinrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß ein Temperaturfühler zur Ermittlung der Umgebungstemperatur und ein Temperaturfühler zur Ermittlung der Temperatur im Kühlraum vorgesehen sind.
- Kühleinrichtung nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Überwachungseinrichtung einen Sensor umfaßt, der ein Signal abgibt, wenn eine den Kühlraum verschließende Tür geöffnet ist.
- Kühleinrichtung nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Kühlkreislauf mit einem Vorratsbehälter (15) versehen ist und die Überwachungseinrichtung Mittel zur Erfassung der Füllhöhe des Vorratsbehälters (15) aufweist.
- Kühleinrichtung nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Überwachungseinrichtung Mittel zur Erfassung des Drucks in dem Kühlkreislauf aufweist.
- Verfahren zur Überwachung einer Kühleinrichtung mit einem Kühlkreislauf zur Kühlung eines Kühlraums und einer Steuereinrichtung, wobei der Kühlkreislauf durch einen Absorptionskreislauf gebildet ist, der bei einem Absorber (12) ein Kältemittel absorbiert, bei einem Austreiber (1) das Kältemittel austreibt, bei einem Kondensator (5) das Kältemittel kondensiert und bei einem Verdampfer (9) das Kältemittel unter Aufnahme von Wärme verdampft, gekennzeichnet durch die Schritte: Ermitteln einer Temperatur an mindestens einer Stelle am Kühlkreislauf, Vergleich der ermittelten Temperatur mit einem vorgegebenen Wert in Abhängigkeit von einer eingestellten Kühlleistung, und Abschalten des Kühlkreislaufs bei Abweichen eines Temperaturwerts von einem vorgegebenen Bereich.
- Verfahren zur Überwachung einer Kühleinrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Steuereinrichtung mit einem Sensor verbunden ist, der ermittelt, ob eine den Kühlraum verschließende Tür geschlossen ist und das Verfahren zur Überwachung der Kühleinrichtung erst bei geschlossener Tür vorgenommen wird.
- Verfahren zur Überwachung einer Kühleinrichtung nach Anspruch 8 oder 9, dadurch gekennzeichnet, daß die Steuerung mit einer Software ausgestattet ist, die nach den Regeln der Fuzzy-Logic arbeitet.
- Verfahren zur Überwachung einer Kühleinrichtung nach einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, daß die Umgebungstemperatur der Kühleinrichtung erfaßt und in der Steuereinrichtung berücksichtigt wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996142745 DE19642745C2 (de) | 1996-10-16 | 1996-10-16 | Absorberkühlschrank |
DE19642745 | 1996-10-16 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0837294A2 true EP0837294A2 (de) | 1998-04-22 |
EP0837294A3 EP0837294A3 (de) | 2001-12-05 |
EP0837294B1 EP0837294B1 (de) | 2006-04-05 |
Family
ID=7808952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19970117710 Expired - Lifetime EP0837294B1 (de) | 1996-10-16 | 1997-10-13 | Kühleinrichtung und Verfahren zur Überwachung einer Kühleinrichtung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0837294B1 (de) |
JP (1) | JPH10122712A (de) |
DE (2) | DE19642745C2 (de) |
ES (1) | ES2117611T3 (de) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000014458A2 (de) * | 1998-09-04 | 2000-03-16 | Gerhard Kunze | Absorptionskältemaschine |
EP1319910A2 (de) * | 2001-12-13 | 2003-06-18 | Buderus Heiztechnik GmbH | Verfahren zur Regelung einer Diffusionsabsorptionsanlage |
EP1536197A2 (de) * | 2003-11-26 | 2005-06-01 | Norcold, Inc. | System und Verfahren zum Regeln von Absorptionskältemaschinen |
CN110094931A (zh) * | 2019-05-30 | 2019-08-06 | 海信(山东)冰箱有限公司 | 一种冰箱温控方法及装置、冰箱 |
US10746586B2 (en) | 2015-05-28 | 2020-08-18 | Sonicu, Llc | Tank-in-tank container fill level indicator |
US10745263B2 (en) | 2015-05-28 | 2020-08-18 | Sonicu, Llc | Container fill level indication system using a machine learning algorithm |
USD1002676S1 (en) | 2019-08-30 | 2023-10-24 | Dometic Sweden Ab | Appliance |
USD1026969S1 (en) | 2020-08-31 | 2024-05-14 | Dometic Sweden Ab | Refrigerator |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102384634A (zh) * | 2011-06-24 | 2012-03-21 | 合肥美的荣事达电冰箱有限公司 | 制冷设备、用于其的防凝露加热器控制装置及控制方法 |
CN103574993B (zh) * | 2012-07-27 | 2016-08-10 | 青岛德莱维电器有限公司 | 一种冰箱制冷系统的制备方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
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FR1484466A (de) * | 1967-09-15 | |||
DE2135066C3 (de) * | 1971-07-14 | 1975-02-20 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Elektronische Regeleinrichtung für Absorber-Kühlgeräte |
DE3133686A1 (de) * | 1981-08-26 | 1983-03-17 | Lattek, Gabriele, 4300 Essen | Kuehlschrank od.dgl. fuer reisemobile, wohnwagen u. aehnl. |
JPH02208460A (ja) * | 1989-02-03 | 1990-08-20 | Sanyo Electric Co Ltd | 吸収冷凍機の運転監視装置 |
DE4012841A1 (de) * | 1990-04-23 | 1991-10-24 | Behr Gmbh & Co | Klima- oder kaelteanlage |
DE4113170A1 (de) * | 1990-05-01 | 1991-11-14 | Loh Kg Rittal Werk | Kuehlgeraet fuer einen schaltschrank |
US5156013A (en) * | 1990-05-29 | 1992-10-20 | Sanyo Electric Co., Ltd. | Control device for absorption refrigerator |
GB2254452B (en) * | 1991-04-04 | 1994-11-02 | Total Temperature Control Limi | Control of refrigerators and freezers |
JPH055564A (ja) * | 1991-06-28 | 1993-01-14 | Toshiba Corp | 空気調和機 |
JP3258684B2 (ja) * | 1991-12-06 | 2002-02-18 | 三洋電機株式会社 | 吸収式冷凍機の異常検出装置 |
DE4330923C1 (de) * | 1993-09-13 | 1995-03-23 | Loh Kg Rittal Werk | Kühlgerät für einen Schaltschrank oder ein Elektronikgehäuse |
JP3184034B2 (ja) * | 1993-12-16 | 2001-07-09 | 株式会社荏原製作所 | 吸収冷温水機の制御方法 |
DE19516627A1 (de) * | 1995-05-05 | 1996-11-07 | Ranco Inc | Verfahren und Vorrichtung zur Regelung eines Prozesses |
-
1996
- 1996-10-16 DE DE1996142745 patent/DE19642745C2/de not_active Expired - Fee Related
-
1997
- 1997-10-13 DE DE59712611T patent/DE59712611D1/de not_active Expired - Lifetime
- 1997-10-13 EP EP19970117710 patent/EP0837294B1/de not_active Expired - Lifetime
- 1997-10-13 ES ES97117710T patent/ES2117611T3/es not_active Expired - Lifetime
- 1997-10-14 JP JP28033297A patent/JPH10122712A/ja active Pending
Non-Patent Citations (1)
Title |
---|
None |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000014458A3 (de) * | 1998-09-04 | 2000-08-24 | Gerhard Kunze | Absorptionskältemaschine |
US6397625B1 (en) | 1998-09-04 | 2002-06-04 | Solarfrost International Ltd. | Absorption refrigeration machine |
WO2000014458A2 (de) * | 1998-09-04 | 2000-03-16 | Gerhard Kunze | Absorptionskältemaschine |
EP1319910A3 (de) * | 2001-12-13 | 2005-08-31 | BBT Thermotechnik GmbH | Verfahren zur Regelung einer Diffusionsabsorptionsanlage |
EP1319910A2 (de) * | 2001-12-13 | 2003-06-18 | Buderus Heiztechnik GmbH | Verfahren zur Regelung einer Diffusionsabsorptionsanlage |
EP1536197A3 (de) * | 2003-11-26 | 2006-05-17 | Norcold, Inc. | System und Verfahren zum Regeln von Absorptionskältemaschinen |
EP1536197A2 (de) * | 2003-11-26 | 2005-06-01 | Norcold, Inc. | System und Verfahren zum Regeln von Absorptionskältemaschinen |
US10746586B2 (en) | 2015-05-28 | 2020-08-18 | Sonicu, Llc | Tank-in-tank container fill level indicator |
US10745263B2 (en) | 2015-05-28 | 2020-08-18 | Sonicu, Llc | Container fill level indication system using a machine learning algorithm |
CN110094931A (zh) * | 2019-05-30 | 2019-08-06 | 海信(山东)冰箱有限公司 | 一种冰箱温控方法及装置、冰箱 |
CN110094931B (zh) * | 2019-05-30 | 2021-08-17 | 海信(山东)冰箱有限公司 | 一种冰箱温控方法及装置、冰箱 |
USD1002676S1 (en) | 2019-08-30 | 2023-10-24 | Dometic Sweden Ab | Appliance |
USD1026969S1 (en) | 2020-08-31 | 2024-05-14 | Dometic Sweden Ab | Refrigerator |
Also Published As
Publication number | Publication date |
---|---|
ES2117611T3 (es) | 2006-10-16 |
EP0837294B1 (de) | 2006-04-05 |
ES2117611T1 (es) | 1998-08-16 |
DE19642745A1 (de) | 1998-04-30 |
DE59712611D1 (de) | 2006-05-18 |
EP0837294A3 (de) | 2001-12-05 |
JPH10122712A (ja) | 1998-05-15 |
DE19642745C2 (de) | 2000-09-14 |
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