WO1996017213A1 - Evaporator for a compressor-type capillary cooling unit - Google Patents
Evaporator for a compressor-type capillary cooling unit Download PDFInfo
- Publication number
- WO1996017213A1 WO1996017213A1 PCT/EP1995/004167 EP9504167W WO9617213A1 WO 1996017213 A1 WO1996017213 A1 WO 1996017213A1 EP 9504167 W EP9504167 W EP 9504167W WO 9617213 A1 WO9617213 A1 WO 9617213A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- evaporator
- coolant
- compressor
- capillary
- channel
- Prior art date
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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
- F25B39/022—Evaporators with plate-like or laminated elements
- F25B39/024—Evaporators with plate-like or laminated elements with elements constructed in the shape of a hollow panel
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/37—Capillary tubes
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/05—Compression system with heat exchange between particular parts of the system
- F25B2400/052—Compression system with heat exchange between particular parts of the system between the capillary tube and another part of the refrigeration cycle
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/05—Compression system with heat exchange between particular parts of the system
- F25B2400/054—Compression system with heat exchange between particular parts of the system between the suction tube of the compressor and another part of the cycle
Definitions
- the invention relates to an evaporator for a compressor cooling device made of at least two metal sheets that are firmly connected to one another in the form of welding or soldering, partial areas of the metal sheets being formed into channels to form a coolant channel that is meandering or running between the metal sheets in such a way that channels a sweat-preventing material which exactly depicts the later course of the coolant channel and which limits its area is applied to at least one of the metal sheets on the side facing the other metal sheet and then the two metal sheets by hot-rolled welding with stretching of the substrate and including the coolant inlet.
- the evaporator using a dryer and / or e a condenser is connected to a compressor and a capillary line opening into an increasing and cross-section formed as an injector for the inlet of the coolant which is in the liquid phase and a line with a substantially larger cross section compared to the inlet line for the outlet of the in the vapor phase located coolant.
- Such evaporators are regularly formed to form a cold room from correspondingly flat evaporator boards which, after the shaping and in the installed state, delimit one or more cold rooms of a cooling device on one side or enclose them on several sides and often also form the rear wall of such a cold room.
- the shaping is usually carried out by compressed air, which is passed between the non-welded duct areas and deforms one or both of the welded blanks to form duct cross sections via the internal pressure which is produced there.
- Such critical areas must therefore be arranged outside of the cold room and outside of the insulation surrounding the cold room in the future cooling devices.
- connection point between the capillary supply line to the inlet of the coolant in the liquid phase and the evaporator is placed in areas outside the cooling space.
- connection point is carried out by pressing in such a way that the capillary line is inserted into an already widened part of the meandering channel and provided on its outer circumference with adhesive / connecting means, after which the sub-channel of the evaporator now surrounding the capillary line is pressed with the capillary line in a pressing device .
- the capillary tube still protrudes behind the compressed area into the part of the coolant channel that was originally present or even intentionally expanded and designed as an injector, so that the sudden and very strong expansion of the introduced coolant causes extremely strong cooling of the surroundings .
- connection point or the part of the evaporator immediately adjacent to it and located in the area of strong cooling is placed outside the cooling room for safety reasons, considerable energy losses result from cooling outside the cooling room.
- the invention therefore consists in that the capillary line to the inlet of the coolant which is in the liquid phase as a capillary channel which runs between the metal sheets and is formed and formed as the initial part of the meandering coolant channel and has any cross section which is hydraulically equivalent to the round cross section of a capillary line as part of the evaporator is trained.
- the inlet-side coolant channel as a capillary channel with a cross-section that is hydraulically equivalent to the round cross-section of a capillary line
- the cross-sectional jump in the coolant channel or the injector zone can be moved to any location in the evaporator board and thus to an area within the cooling space that is not critical with regard to energy losses .
- connection of a capillary tube for example to the dryer or the condenser, is simplified in that the approximately identical cross sections of the capillary channel and the capillary tube result in soldering and onto the in the prior art, the usual pressing and squeezing of the two line elements can be completely dispensed with.
- soldering of such approximately the same cross-sections also prevents an undesired expansion of the capillary line and thus the expansion of the cooling liquid in areas outside the cooling space and thus an early injector function.
- a particularly advantageous embodiment results from the fact that the line to the outlet of the coolant in the vaporous phase is designed as an end part of the meandering coolant channel running between the metal sheets and runs parallel and in the immediate vicinity of the capillary channel on the inlet side above the injector.
- the heat transfer takes place here in a particularly favorable manner in substantial orders of magnitude by heat conduction of the metal of the coolant channel and not, as in the prior art, essentially by heat transfer between boundary layers second interwoven lines.
- a further advantageous embodiment results from the fact that the outlet, formed as the end part of the meandering coolant channel, of the coolant in the vaporous phase and the capillary channel are at least partially on a sheet metal flag formed as part of the metal sheets which are firmly connected to one another in the form of a weld or soldering are arranged.
- Such a sheet metal flag can be easily bent after the manufacture of the evaporator and can be led into any area of the cooling device, so that an extremely simple adaptation to the respective shape of the cooling space is already specified during production.
- the sheet metal flag is connected to the rest of the evaporator by means of individual short and thin webs, so that an evaporator board which is easy and easy to transport is to be produced first, and by simply tearing or kinking the sheet metal rods and bending the sheet metal flag according to the geometry of the refrigerator compartment adapted to the respective cooling devices easy manufacture and easy installation are guaranteed. Further advantages resulting from the simplification of the solder connection result if the connecting lines leading to the compressor and / or to the dryer or to the condenser are constructed by the evaporator as pipes made of a material which corresponds to the material of the evaporator.
- the relatively sensitive capillary line is supported by the thicker and larger hot gas line between the evaporator and the compressor.
- the connecting lines leading to the compressor and / or to the dryer or to the condenser have a swaged and / or widened end at least at the soldering point of the connection to the evaporator.
- Fig. 1 shows an evaporator according to the invention with an inlet-side capillary channel, softer parallel to
- Hot gas duct Fig. 2 runs an evaporator according to the invention in view and in supervision with a sheet metal tab bent over a large area;
- Fig. 3 shows an evaporator according to Fig. 2, but with a sheet metal tab bent only briefly;
- FIG. 1 shows an evaporator 1 according to the invention, in which the outlet-side hot gas channel 3 runs parallel to the formed capillary channel 2. Both channels are part of the meandering coolant channel 4 formed by the roll bond process.
- the parallel guidance extends shortly before the injector 5, which is designed as an enlarging coolant channel, in which the liquid coolant is expanded and in which the strongest cooling effect occurs.
- the two parallel hot gas and capillary channels run on a region of the evaporator 1 which is designed as a sheet metal lug 6 and which is connected to the evaporator via a web 7.
- This web can be broken off or kinked as desired and after the evaporator has been installed in the cooling device, after which the metal flag 6 can be bent in any position and direction.
- the pipes 8 and 9 essentially made of the same material as the evaporator, are connected for the hot gas and for the coolant supply.
- the connections of approximately the same size between the lines and the evaporator channels are connected by the solder joints 10 and 11.
- Fig. 2 shows the evaporator according to the invention in an enlarged view in one view and in one Supervision, the sheet metal flag 6 present here can be angled over a relatively large area. This results from the double folding of the sheet metal flag shown in the left partial image or from the sheet metal webs present at points 12 and 13, which can be bent as desired.
- the injector is located here approximately at point 14 and thus in the cooling interior, while the sheet metal tab 6 which is bent for installation is far from the e.g. protrudes with a foam 15 insulated refrigerator and can be connected to the associated elements in any way.
- FIG. 3 shows the evaporator already shown in FIG. 2, but only with a bent web 13 and the resultant far less bending of the sheet metal lug 6.
- FIG. 4 shows an overview of the entire arrangement of a cooling device with an evaporator according to the invention.
- the lines for the hot gas and the liquid coolant 8 and 9 are connected to the evaporator via the soldering points 10, 11, which are interwoven or entangled in the region 16 in order to achieve a further increased heat exchange.
- the dryer 21, the condenser 22 and the connections for the condenser 18 are implemented via the soldering points 17, 19, 20, which results in a closed system which places all connection points outside the cooling space and reduces the energy losses to a minimum.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Air-Conditioning For Vehicles (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Drying Of Solid Materials (AREA)
- Drying Of Gases (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU38689/95A AU3868995A (en) | 1994-12-01 | 1995-10-24 | Evaporator for a compressor-type capillary cooling unit |
DE59507713T DE59507713D1 (en) | 1994-12-01 | 1995-10-24 | EVAPORATOR FOR A COMPRESSOR REFRIGERATOR / CAPILLARY CHANNEL |
DK95937834T DK0793792T3 (en) | 1994-12-01 | 1995-10-24 | Evaporator for a compressor cooling device / capillary duct |
EP95937834A EP0793792B1 (en) | 1994-12-01 | 1995-10-24 | Evaporator for a compressor-type capillary cooling unit |
JP8518110A JPH10510043A (en) | 1994-12-01 | 1995-10-24 | Evaporator for compressor type capillary cooling system |
AT95937834T ATE189305T1 (en) | 1994-12-01 | 1995-10-24 | EVAPORATOR FOR A COMPRESSOR COOLER/CAPILLARY CHANNEL |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4442817.0 | 1994-12-01 | ||
DE4442817A DE4442817C2 (en) | 1994-12-01 | 1994-12-01 | Evaporator for a compressor cooling device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996017213A1 true WO1996017213A1 (en) | 1996-06-06 |
Family
ID=6534662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1995/004167 WO1996017213A1 (en) | 1994-12-01 | 1995-10-24 | Evaporator for a compressor-type capillary cooling unit |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0793792B1 (en) |
JP (1) | JPH10510043A (en) |
AR (1) | AR000226A1 (en) |
AT (1) | ATE189305T1 (en) |
AU (1) | AU3868995A (en) |
CA (1) | CA2206225A1 (en) |
DE (2) | DE4442817C2 (en) |
DK (1) | DK0793792T3 (en) |
ES (1) | ES2144150T3 (en) |
TR (1) | TR199501498A2 (en) |
WO (1) | WO1996017213A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997032169A1 (en) * | 1996-02-28 | 1997-09-04 | Aktiebolaget Electrolux | Arrangement at a tube evaporator |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1239244A1 (en) * | 2001-03-07 | 2002-09-11 | Artal Italiana S.p.A. | Shelf-type heat exchanger |
US10188223B2 (en) * | 2016-09-26 | 2019-01-29 | Hussmann Corporation | Refrigerated merchandiser including eutectic plate refrigeration |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1083836B (en) * | 1957-12-24 | 1960-06-23 | Licentia Gmbh | Plate or box evaporators for refrigeration systems, especially refrigerators |
FR2451559A1 (en) * | 1979-03-12 | 1980-10-10 | Schmoele Metall R & G | Evaporator for compressor driven refrigerator - has connecting tongues punched out of metal plate with medium passages directed towards inside |
FR2528157A3 (en) * | 1982-06-02 | 1983-12-09 | Indesit | THERMAL RECOVERY CYCLE CIRCUIT OF THE EXPANSION CAPILLARY TYPE CYCLE |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1140211B (en) * | 1960-01-07 | 1962-11-29 | Ver Deutsche Metallwerke Ag | Capillary in a widened duct plate for compression refrigeration machines |
DE7425651U (en) * | 1974-07-27 | 1976-03-04 | Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart | EVAPORATOR BOARD, IN PARTICULAR ROLL-WELDED EVAPORATOR BOARD |
JPH0545452Y2 (en) * | 1988-10-31 | 1993-11-19 |
-
1994
- 1994-12-01 DE DE4442817A patent/DE4442817C2/en not_active Expired - Fee Related
-
1995
- 1995-10-24 AT AT95937834T patent/ATE189305T1/en not_active IP Right Cessation
- 1995-10-24 WO PCT/EP1995/004167 patent/WO1996017213A1/en active IP Right Grant
- 1995-10-24 DE DE59507713T patent/DE59507713D1/en not_active Expired - Fee Related
- 1995-10-24 JP JP8518110A patent/JPH10510043A/en active Pending
- 1995-10-24 AU AU38689/95A patent/AU3868995A/en not_active Abandoned
- 1995-10-24 EP EP95937834A patent/EP0793792B1/en not_active Expired - Lifetime
- 1995-10-24 ES ES95937834T patent/ES2144150T3/en not_active Expired - Lifetime
- 1995-10-24 DK DK95937834T patent/DK0793792T3/en active
- 1995-10-24 CA CA002206225A patent/CA2206225A1/en not_active Abandoned
- 1995-11-28 TR TR95/01498A patent/TR199501498A2/en unknown
- 1995-11-29 AR AR33444095A patent/AR000226A1/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1083836B (en) * | 1957-12-24 | 1960-06-23 | Licentia Gmbh | Plate or box evaporators for refrigeration systems, especially refrigerators |
FR2451559A1 (en) * | 1979-03-12 | 1980-10-10 | Schmoele Metall R & G | Evaporator for compressor driven refrigerator - has connecting tongues punched out of metal plate with medium passages directed towards inside |
FR2528157A3 (en) * | 1982-06-02 | 1983-12-09 | Indesit | THERMAL RECOVERY CYCLE CIRCUIT OF THE EXPANSION CAPILLARY TYPE CYCLE |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997032169A1 (en) * | 1996-02-28 | 1997-09-04 | Aktiebolaget Electrolux | Arrangement at a tube evaporator |
US5890375A (en) * | 1996-02-28 | 1999-04-06 | Aktiebolaget Electrolux | Arrangement at a tube evaporator |
AU704738B2 (en) * | 1996-02-28 | 1999-05-06 | Aktiebolaget Electrolux | Arrangement at a tube evaporator |
Also Published As
Publication number | Publication date |
---|---|
DE4442817A1 (en) | 1996-06-05 |
ATE189305T1 (en) | 2000-02-15 |
JPH10510043A (en) | 1998-09-29 |
CA2206225A1 (en) | 1996-06-06 |
ES2144150T3 (en) | 2000-06-01 |
EP0793792A1 (en) | 1997-09-10 |
AR000226A1 (en) | 1997-05-28 |
DE4442817C2 (en) | 1998-01-29 |
DK0793792T3 (en) | 2000-06-19 |
AU3868995A (en) | 1996-06-19 |
EP0793792B1 (en) | 2000-01-26 |
DE59507713D1 (en) | 2000-03-02 |
TR199501498A2 (en) | 1996-07-21 |
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