EP1427973A1 - Kältegerät mit zwei verdampfern - Google Patents
Kältegerät mit zwei verdampfernInfo
- Publication number
- EP1427973A1 EP1427973A1 EP02797978A EP02797978A EP1427973A1 EP 1427973 A1 EP1427973 A1 EP 1427973A1 EP 02797978 A EP02797978 A EP 02797978A EP 02797978 A EP02797978 A EP 02797978A EP 1427973 A1 EP1427973 A1 EP 1427973A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- refrigerant
- evaporator
- evaporators
- refrigerant circuit
- compressor
- 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
- 239000003507 refrigerant Substances 0.000 claims abstract description 59
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 9
- 238000005057 refrigeration Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 description 12
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
-
- 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
- F25B2600/25—Control of valves
- F25B2600/2511—Evaporator distribution valves
-
- 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 present invention relates to refrigeration devices with a refrigerant circuit, in which two evaporators and a compressor are connected in series and through which a refrigerant flows.
- the refrigerant circuits of conventional refrigeration devices of this type have a collector in which refrigerant can collect in the event of an interruption in the operation of the compressor, which refrigerant can be supplied to the compressor immediately when it is restarted.
- a collector in which refrigerant can collect in the event of an interruption in the operation of the compressor, which refrigerant can be supplied to the compressor immediately when it is restarted.
- the object of the present invention is to provide a refrigeration device of the type specified at the outset, in which a cooling effect can be achieved directly when the compressor is started up, and which therefore has an improved thermal efficiency.
- the amount of refrigerant circulating in the refrigerant circuit is dimensioned such that it evaporates essentially completely in that of the two evaporators which is arranged further upstream in the refrigerant circuit than the other.
- the cooling capacity of the evaporator which is located downstream and flows through second, is at most a small fraction of the cooling capacity that can be achieved if it is flowed through first.
- This metering of the refrigerant makes it possible to use the downstream evaporator as a refrigerant collector. The consequence of this is that when the compressor is started up by sucking off the refrigerant from the evaporator functioning as a collector, the refrigerant evaporates in this evaporator and thus immediately cools down.
- the evaporators are preferably arranged at different heights, the upstream being higher than the downstream evaporator.
- the refrigerant line of the upstream evaporator is preferably continuously downhill over most of its length to the downstream evaporator.
- condensing refrigerant in this line can flow freely to the evaporator located downstream.
- a directional control valve is preferably arranged in the refrigerant circuit, which allows the evaporator arranged upstream to be coupled out of the refrigerant circuit.
- Figure 1 is a schematic section through a refrigerator, to which the present invention is applicable.
- FIG. 2 shows a schematic illustration of a refrigerant circuit for the refrigeration device from FIG. 1;
- Fig. 3 shows a more detailed representation of the refrigerant circuit.
- Fig. 1 shows schematically a section through a refrigerator with a housing 1, the two inner compartments 3, 4 separated by an intermediate floor 2, e.g. a freezer compartment and a normal refrigerator compartment, on the respective doors 7, 8 of which are located opposite rear walls of evaporators 5 and 6, respectively.
- the evaporators 5, 6 are supplied with refrigerant by a compressor 9, which is operated intermittently depending on the temperatures measured in the inner compartments 3 and 4, respectively.
- FIG. 2 schematically shows the structure of the refrigerant circuit of the refrigeration device from FIG. 1.
- the compressor 9, a heat exchanger 10, the evaporator 5 of the inner compartment 3 at a higher level and the evaporator 6 of the inner compartment 4 at a lower level are connected in series to form a closed one Connected circle.
- the amount of refrigerant circulating in this circuit is dimensioned so that in cooling mode, with the compressor running the refrigerant fed into the higher evaporator 5 is essentially evaporated when the refrigerant flow reaches the lower evaporator 6.
- the two evaporators 5, 6 are connected in series, essentially only the higher inner compartment 3 is cooled.
- a directional control valve 11 is connected to the output of the compressor 10 with two switch positions, which in its first switch position controls the flow of refrigerant to the inlet of the evaporator 5 and in its second switch position by separating the evaporator 5 from the Refrigerant circuit directly feeds the evaporator 6.
- the evaporators 5, 6 are designed in a manner known per se as a roll-bond evaporator, with an evaporator plate made of a good heat-conducting material and with a refrigerant line 12 arranged on one side of the plate in intimate contact with the same and running in alternating directions.
- the refrigerant line 12 is downhill from the inlet 13 to the outlet 14 of the evaporator 5. This ensures that refrigerant, which can recondense in the evaporator 5 when the compressor 9 is switched off, does not collect in the evaporator 5, but rather flows into the lower-lying evaporator 6, which thus functions as a collecting container for the refrigerant.
- the lower evaporator 6, as shown in the figure can have the same structure as the higher evaporator 5.
- FIG. 3 shows a more detailed illustration or a further development of the refrigerant circuit from FIG. 2.
- Refrigerant from the heat exchanger 10 reaches the directional control valve 11 via a dryer 15.
- Capillary lines 16, 17, which form the outputs of the directional control valve 11, are guided inside a return flow line 18 through which relaxed refrigerant is supplied to the compressor 9 from the outlet of the lower evaporator 6 ,
- Both capillary lines are guided along the outer edge of the compressor 6, but since they carry the refrigerant under high pressure, there is no significant evaporation in the capillary lines. This only takes place when, after passing through a throttle spiral 19 or 20, the relaxed refrigerant enters the refrigerant line 12 of the evaporator 6 or 5.
- Both evaporators 5, 6 are provided with electrical heating elements 21, which can serve to thaw and remove condensed moisture from the inner compartments 3, 4 on the surface of the evaporators 5, 6, or especially in the case of the lower evaporator 6, which results from evaporation to counteract the cooling resulting from collected refrigerant when the compressor is started up, if the temperature to be maintained in the inner compartment 4 is exceptionally higher than the ambient 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)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10145139A DE10145139A1 (de) | 2001-09-13 | 2001-09-13 | Kältegerät mit zwei Verdampfern |
| DE10145139 | 2001-09-13 | ||
| PCT/EP2002/010143 WO2003023297A1 (de) | 2001-09-13 | 2002-09-10 | Kältegerät mit zwei verdampfern |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1427973A1 true EP1427973A1 (de) | 2004-06-16 |
| EP1427973B1 EP1427973B1 (de) | 2009-11-25 |
Family
ID=7698905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02797978A Expired - Lifetime EP1427973B1 (de) | 2001-09-13 | 2002-09-10 | Kältegerät mit zwei verdampfern |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1427973B1 (de) |
| CN (1) | CN100347498C (de) |
| AT (1) | ATE449939T1 (de) |
| DE (2) | DE10145139A1 (de) |
| ES (1) | ES2334117T3 (de) |
| WO (1) | WO2003023297A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITTO20060871A1 (it) * | 2006-12-07 | 2008-06-08 | Indesit Co Spa | Apparecchio di refrigerazione |
| CN103032998A (zh) * | 2011-10-10 | 2013-04-10 | 江苏新日丹顿电气有限公司 | 蒸发侧热交换器循环雾化分配装置及其循环雾化方法 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0624763A1 (de) * | 1993-05-10 | 1994-11-17 | General Electric Company | Verflüssiger mit freiem Abfluss für eine Kälteanlage |
| DE19535144A1 (de) * | 1995-09-21 | 1997-03-27 | Bosch Siemens Hausgeraete | Kältegerät |
| DE19535145A1 (de) * | 1995-09-21 | 1997-03-27 | Bosch Siemens Hausgeraete | Gefriergerät |
| DE19843484A1 (de) * | 1998-09-22 | 2000-03-23 | Bsh Bosch Siemens Hausgeraete | Einkreiskältesystem |
| FR2792965B1 (fr) * | 1999-04-30 | 2004-09-03 | Peugeot Citroen Automobiles Sa | Equipement d'echange thermique pour vehicule automobile |
| JP2000329443A (ja) * | 1999-05-21 | 2000-11-30 | Sharp Corp | 冷蔵庫 |
| DE19957719A1 (de) * | 1999-11-30 | 2001-05-31 | Bsh Bosch Siemens Hausgeraete | Kältegerät |
-
2001
- 2001-09-13 DE DE10145139A patent/DE10145139A1/de not_active Withdrawn
-
2002
- 2002-09-10 EP EP02797978A patent/EP1427973B1/de not_active Expired - Lifetime
- 2002-09-10 WO PCT/EP2002/010143 patent/WO2003023297A1/de not_active Ceased
- 2002-09-10 ES ES02797978T patent/ES2334117T3/es not_active Expired - Lifetime
- 2002-09-10 DE DE50214028T patent/DE50214028D1/de not_active Expired - Lifetime
- 2002-09-10 AT AT02797978T patent/ATE449939T1/de not_active IP Right Cessation
- 2002-09-10 CN CNB028178181A patent/CN100347498C/zh not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03023297A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1610811A (zh) | 2005-04-27 |
| WO2003023297A1 (de) | 2003-03-20 |
| ATE449939T1 (de) | 2009-12-15 |
| CN100347498C (zh) | 2007-11-07 |
| ES2334117T3 (es) | 2010-03-05 |
| DE50214028D1 (de) | 2010-01-07 |
| DE10145139A1 (de) | 2003-04-03 |
| EP1427973B1 (de) | 2009-11-25 |
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