EP0073363A2 - Evaporateur pour un appareil de refroidissement à plusieurs témperatures - Google Patents

Evaporateur pour un appareil de refroidissement à plusieurs témperatures Download PDF

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Publication number
EP0073363A2
EP0073363A2 EP82107148A EP82107148A EP0073363A2 EP 0073363 A2 EP0073363 A2 EP 0073363A2 EP 82107148 A EP82107148 A EP 82107148A EP 82107148 A EP82107148 A EP 82107148A EP 0073363 A2 EP0073363 A2 EP 0073363A2
Authority
EP
European Patent Office
Prior art keywords
evaporator
side wall
parallel
passage
compartment
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
Application number
EP82107148A
Other languages
German (de)
English (en)
Other versions
EP0073363A3 (en
EP0073363B1 (fr
Inventor
Georg Ing. Grad. Rannenberg
Gerd Dipl.-Ing. Vollhardt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0073363A2 publication Critical patent/EP0073363A2/fr
Publication of EP0073363A3 publication Critical patent/EP0073363A3/de
Application granted granted Critical
Publication of EP0073363B1 publication Critical patent/EP0073363B1/fr
Expired legal-status Critical Current

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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

Definitions

  • the invention relates to an evaporator according to the preamble of the first claim.
  • the evaporator is part of an intermittently operated compression refrigerator, with the evaporator part assigned to the main refrigerator compartment being defrosted by frost and ice build-up during the downtime of the compression refrigerator.
  • This evaporator arrangement which is preferably used for the cooling device version described, has the disadvantage in the known designs that liquid refrigerant is transported from the evaporator assigned to the freezer compartment into the evaporator assigned to the main refrigerator compartment due to the pressure compensation in the refrigeration system during the downtime of the compression refrigerator.
  • This liquid refrigerant evaporates due to the higher heat load when entering the main refrigerator evaporator, primarily at the connection point of the freezer and the main refrigerator evaporator and prevents due to the resulting continuous cooling of this evaporator part, the required complete defrosting of the main cooling compartment evaporator.
  • additional measures for complete defrosting and avoidance of ice build-up are required in known cooling devices of this type.
  • the additional heating required for defrosting the surfaces cooled by flowing liquid during the downtime is achieved by taking advantage of the ambient heat by long downtimes or by arranging an electrical heating system on the evaporator. In the former case, this results in excessive temperature fluctuations in the refrigerated goods and in the second case an unnecessary increase in energy consumption due to the introduction of a heat source in the refrigerator compartment.
  • the invention has for its object to take measures in an evaporator according to the preamble of the first claim, by which icing on the main refrigerator evaporator in the area of the connection point between the freezer evaporator and the main refrigerator evaporator can be avoided with a simple construction, in particular by the fact that the afterflow of liquid Refrigerant is avoided in the main refrigerator compartment evaporator during the downtime of the compression refrigeration machine and thus the additional energy required: for defrosting can be significantly reduced or eliminated.
  • the refrigerant coming from the capillary tube acting as a throttling member is passed through the ceiling board over a short distance into the bottom board of the freezer evaporator, in which the tubing is large in volume with several parallel paths to reduce the flow velocity.
  • a parallel channel leads steeply upwards from the base plate to the ceiling plate, at least one transverse channel being provided in the side wall between the tubes of the parallel channel.
  • the tubing runs in several meandering turns.
  • the lower base plate acts as a kind of collecting vessel, in which there is an extensive separation of gaseous and liquid refrigerant when the compressor in the refrigerant circuit is switched off and the refrigerant is driven by pressure equalization in the refrigerant circuit.
  • the gas bubbles are separated again from liquid drops according to static laws, so that practically no liquid refrigerant is taken up from the bottom plate into the ceiling plate during downtimes of the compressor.
  • Small amounts of liquid entrained by the flow separate from the gas flow in the ceiling board and are returned to the floor board by the increasing arrangement of the ceiling board tubing.
  • a base plate 1 and a slightly inclined ceiling plate 2 together with a vertical side wall 3 form a one-piece freezer evaporator, to which a plate-shaped main refrigerator compartment evaporator 5 connects, which is approximately in the plane of the side wall 3.
  • the ceiling board 2 is inclined with respect to a horizontal plane from its connecting edge 6 with the side wall 3.
  • Dun g at connects skante 6 is inserted a throttle pipe 14 in the top board 2, by which the refrigerant in the refrigerant passage 7 is initiated.
  • the refrigerant channel 7 is led through the ceiling board 2 and the side wall 3 directly and without any turns into the floor board 1.
  • the refrigerant channel 7 branches into three sections connected in series with parallel pipes 8 which communicate in groups through a plurality of cross lines 9.
  • the parallel winding branches of the tubing in the base plate 1 enable, in particular, the gaseous components to have a separate flow path from the highly fluid-laden channel sections, so that the majority of the liquid components remain in the base plate 1.
  • the gaseous components flow through one of the last winding branch leading parallel duct 10 vertically through the side wall 3 upwards into the ceiling board 2.
  • At least one transverse duct 11 is provided in the parallel duct 10 for further separation of liquid and gaseous refrigerant according to static laws.
  • the tubing is uniformly distributed in turns over the surface, the outflow pipe 12 running through the side wall 3 continuously falling down to the connecting neck 4 and further to the turns of the main cooling compartment evaporator 5.
  • the ceiling board 2 which is inclined slightly upwards from the connecting edge 6, a further separation between gaseous and liquid refrigerant is achieved due to the slope, the liquid refrigerant being returned to the bottom board 1 of the freezer compartment evaporator.
  • connection neck 4 which tends to freeze during operation, is exposed to a significantly lower cold load during the defrosting phase, so that no more ripening or ice buildup on the main cooling compartment evaporator 5 is possible. There is therefore little or no heating of this connecting neck 4, which enables considerable energy savings.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP19820107148 1981-08-29 1982-08-07 Evaporateur pour un appareil de refroidissement à plusieurs témperatures Expired EP0073363B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813134300 DE3134300A1 (de) 1981-08-29 1981-08-29 Verdampfer fuer ein kuehlgeraet
DE3134300 1981-08-29

Publications (3)

Publication Number Publication Date
EP0073363A2 true EP0073363A2 (fr) 1983-03-09
EP0073363A3 EP0073363A3 (en) 1983-07-06
EP0073363B1 EP0073363B1 (fr) 1985-06-26

Family

ID=6140473

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820107148 Expired EP0073363B1 (fr) 1981-08-29 1982-08-07 Evaporateur pour un appareil de refroidissement à plusieurs témperatures

Country Status (2)

Country Link
EP (1) EP0073363B1 (fr)
DE (1) DE3134300A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000014459A1 (fr) * 1998-09-04 2000-03-16 BSH Bosch und Siemens Hausgeräte GmbH Dispositif evaporateur

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3224452A1 (de) * 1982-06-30 1984-01-05 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Kuehlmoebel, insbesondere zweitemperaturen-einkreis-kuehlschrank
DE4141641A1 (de) * 1991-12-17 1993-06-24 Bosch Siemens Hausgeraete Zweitemperaturen-einkreiskuehlgeraet

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1092939B (de) * 1957-07-09 1960-11-17 Gen Motors Corp Anordnung von Kaeltemittelleitungen in Kaeltemaschinen
US2986901A (en) * 1959-03-13 1961-06-06 Whirlpool Co Refrigerant evaporator
FR1434700A (fr) * 1964-09-15 1966-04-08 Bosch Gmbh Robert évaporateur pour machines frigorifiques, notamment pour réfrigérateurs ménagers et machine équipée du dit évaporateur
DE1232598B (de) * 1964-07-10 1967-01-19 Danfoss As Kaelteanlage mit Verdampfer
DE1254650B (de) * 1964-12-01 1967-11-23 Danfoss As Kaelteanlage mit Verdampfer
DE6903900U (de) * 1969-01-31 1969-07-10 Bauknecht Gmbh G Kuehlmoebel
DE1476962A1 (de) * 1964-12-14 1969-10-23 Electrolux Ab Kuehlschrank mit zwei thermisch isolierten Kammern und mit einem kompressorbetriebenen Kaelteapparat
DE1476988A1 (de) * 1966-06-18 1970-03-19 Bosch Hausgeraete Gmbh Verdampfer fuer Kuehlgeraete,insbesondere fuer Haushalts-Kuehlschraenke
GB1213644A (en) * 1967-03-03 1970-11-25 Alcoa Of Great Britain Ltd Improvements in or relating to heat exchangers
FR2134475A1 (fr) * 1971-04-26 1972-12-08 Gen Motors Corp
FR2451559A1 (fr) * 1979-03-12 1980-10-10 Schmoele Metall R & G Evaporateur d'une installation frigorifique de preference commandee par un compresseur

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7431690U (de) * 1975-07-03 Bosch Siemens Hausgeraete Gmbh Verdampfer für Kühlgeräte, Insbesondere Zweitemperaturen-Kühlschränke
DE2231538A1 (de) * 1971-07-03 1973-01-11 Zanussi A Spa Industrie Verbesserung an kuehlmoebelverdampfern und herstellungsverfahren dazu

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1092939B (de) * 1957-07-09 1960-11-17 Gen Motors Corp Anordnung von Kaeltemittelleitungen in Kaeltemaschinen
US2986901A (en) * 1959-03-13 1961-06-06 Whirlpool Co Refrigerant evaporator
DE1232598B (de) * 1964-07-10 1967-01-19 Danfoss As Kaelteanlage mit Verdampfer
FR1434700A (fr) * 1964-09-15 1966-04-08 Bosch Gmbh Robert évaporateur pour machines frigorifiques, notamment pour réfrigérateurs ménagers et machine équipée du dit évaporateur
DE1254650B (de) * 1964-12-01 1967-11-23 Danfoss As Kaelteanlage mit Verdampfer
DE1476962A1 (de) * 1964-12-14 1969-10-23 Electrolux Ab Kuehlschrank mit zwei thermisch isolierten Kammern und mit einem kompressorbetriebenen Kaelteapparat
DE1476988A1 (de) * 1966-06-18 1970-03-19 Bosch Hausgeraete Gmbh Verdampfer fuer Kuehlgeraete,insbesondere fuer Haushalts-Kuehlschraenke
GB1213644A (en) * 1967-03-03 1970-11-25 Alcoa Of Great Britain Ltd Improvements in or relating to heat exchangers
DE6903900U (de) * 1969-01-31 1969-07-10 Bauknecht Gmbh G Kuehlmoebel
FR2134475A1 (fr) * 1971-04-26 1972-12-08 Gen Motors Corp
FR2451559A1 (fr) * 1979-03-12 1980-10-10 Schmoele Metall R & G Evaporateur d'une installation frigorifique de preference commandee par un compresseur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000014459A1 (fr) * 1998-09-04 2000-03-16 BSH Bosch und Siemens Hausgeräte GmbH Dispositif evaporateur

Also Published As

Publication number Publication date
DE3134300C2 (fr) 1988-06-01
DE3134300A1 (de) 1983-03-10
EP0073363A3 (en) 1983-07-06
EP0073363B1 (fr) 1985-06-26

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