EP0039390A2 - Trocknungs- und Reinigungsvorrichtung für einen Kältekreislauf - Google Patents

Trocknungs- und Reinigungsvorrichtung für einen Kältekreislauf Download PDF

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Publication number
EP0039390A2
EP0039390A2 EP81101234A EP81101234A EP0039390A2 EP 0039390 A2 EP0039390 A2 EP 0039390A2 EP 81101234 A EP81101234 A EP 81101234A EP 81101234 A EP81101234 A EP 81101234A EP 0039390 A2 EP0039390 A2 EP 0039390A2
Authority
EP
European Patent Office
Prior art keywords
capillary
filter
conduit
refrigerant circuit
service
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
EP81101234A
Other languages
English (en)
French (fr)
Other versions
EP0039390A3 (en
EP0039390B1 (de
Inventor
Luciano Bobbo
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.)
Industrie Zanussi SpA
Original Assignee
Industrie Zanussi SpA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11257617&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0039390(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Industrie Zanussi SpA filed Critical Industrie Zanussi SpA
Priority to AT81101234T priority Critical patent/ATE6173T1/de
Publication of EP0039390A2 publication Critical patent/EP0039390A2/de
Publication of EP0039390A3 publication Critical patent/EP0039390A3/en
Application granted granted Critical
Publication of EP0039390B1 publication Critical patent/EP0039390B1/de
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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/003—Filters
    • 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

Definitions

  • the present invention relates to a dehydration filter for use in domestic refrigerators employing an evacuation system in the high pressure part.
  • the invention concerns a dehydration filter to be inserted in the refrigerant circuit between the condenser and the capillary tube of the evaporator and connected to the service conduit employed for creating a vacuum within the refrigerant circuit prior to introducing thereinto the refrigerant fluid.
  • the dehumidifying filters of the above defined kind and the associated inlet and/or outlet conduits are usually made of copper, it being generally known that considerable difficulties are encountered in connecting the filter with the respective conduits by brazing. These brazed or soldered connections are relatively fragile and expensive due to the employ of noble metal brazing alloys, and have to be made under suitable conditions in order to avoid refrigerant losses due to imperfect, porous and/or irregular seams.
  • the main object of the present invention is therefore the provision of a filter which is connected to the respective refrigerant circuit by a reduced number of soldered connections and presents maximum safety, structural simplicity, ruggedness and reliable sealing function.
  • this object is attained by a filtering and dehydrating unit adapted to be inserted in a refrigerant circuit between the condenser and the capillary tube of the evaporator thereof, and connected to a service vacuum conduit, said filter unit being characterized by the fact that the capillary is intimately associated with the service vacuum conduit, and that the connection of the capillary and the service conduit to the body of the filter unit is established by a single solder joint.
  • connection between the end of the capillary tube and the service conduit is established by partially compressing the latter to form a seat for the end of the capillary, so as to facilitate the insertion of the two conduits together into the respective port of the filter unit and to reduce the section to be filled with the solder material.
  • the end of the capillary is partially inserted into an opening formed in the service conduit, the latter being formed as an extension of the filter body.
  • the cylindrical body 1 of a known filter has one of its ends formed with a port for connection to a capillary 2, while its other end portion is laterally compressed to form two tubular ports for receiving therein a condensed conduit 3 and a vacuum service conduit 4, respectively.
  • the gaseous refrigerant after having been compressed and subsequently cooled in condenser conduit 3, flows through the filter in the liquid state, the main function of said filter being to retain any humidity so as to avoid the formation of ice in capillary 2 with consequent blocking of the flow within the refrigerant circuit.
  • the filter body 1 contains an absorbent material 7 such as silica gel or the like acting as a chemical filter, and mechanical filters 5, 6 disposed adjacent the inlet and the outlet of body 1, respectively, for retaining any solid contaminants and for preventing absorbent material 7 from being carried out of filter body 1 by the refrigerant fluid.
  • an absorbent material 7 such as silica gel or the like acting as a chemical filter
  • mechanical filters 5, 6 disposed adjacent the inlet and the outlet of body 1, respectively, for retaining any solid contaminants and for preventing absorbent material 7 from being carried out of filter body 1 by the refrigerant fluid.
  • the refrigerant After passing through the filter, the refrigerant enters capillary 2 which funstions to control the amount of the fluid flowing towards the evaporator, wherein it develops its refrigerating effect due to evaporation and expansion in the gaseous phase.
  • the air aspirated through service conduit 4 may enter thereinto directly from condenser conduit 3 without passing through filter body 1, thus avoiding any contamination or moistening of absorbent material 7.
  • Fig. 2 shows a first embodiment of the filter unit according to the invention adapted to achieve the advantages described above.
  • the filter unit shown comprises a tubular body 1 having two outwardly procecting hemispherical end portions for connection to an end portion of a condenser conduit 3 and the end portions of a service conduit 4 and a capillary 2, respectively.
  • connection is preferably formed by locating the end portion of capillary 2 in a seat 8 formed in vacuum service conduit 4 by partially compressing its end portion. In this manner it is possible to connect both conduits together to the fikter body with minimum consumption of solder material by a single solder joint 12, so as to achieve maximum safety and reliability of the connection.
  • Diagrammatically shown in fig. 3 is a second embodiment of the invention further simplified with respect to the one shown in fig. 2 and comprising a cylindrical filter body 1 having two end portions for connection to condenser conduit 3 and the combination of service conduit als capillary, respectively.
  • the service tube 10 is formed as an integral extension of cylindrical body 1, the end portion of capillary 2 being inserted in to a port 11 formed in service conduit 10 and affixed thereto by a single solder joint 13.
  • the refrigerant circuit functions in the well-known classical manner, i.e. the liquid refrigerant provenient from the condenser flows through the absorbent material 7 contained within filter body 1, and enters capillary 2 on its way towards the evaporator.
  • the above described construction results in a difference, however, with regard to the flow path of the air aspirated from the circuit during evacuation thereof.
  • the aspirated air passes through the absorbent filter material, in contrast to what happens in the case of prior art constructions. This feature could be disadvantageous, if the air originally contained in the circuit containes a certain degree of humidity sufficient to partially saturate the filter material.
  • the filter unit according to the invention may obviously be modified in various manners.
  • the diameters and wall thicknesses of the filter body and the various conduits as well as the materials employed may be selected in accordance with the characteristics of the refrigerant circuit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Centrifugal Separators (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Sink And Installation For Waste Water (AREA)
  • Windings For Motors And Generators (AREA)
  • Drying Of Solid Materials (AREA)
EP81101234A 1980-05-05 1981-02-20 Trocknungs- und Reinigungsvorrichtung für einen Kältekreislauf Expired EP0039390B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81101234T ATE6173T1 (de) 1980-05-05 1981-02-20 Trocknungs- und reinigungsvorrichtung fuer einen kaeltekreislauf.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT45717/80A IT1136391B (it) 1980-05-05 1980-05-05 Unita' deidratante e filtrante per un circuito frigorigeno
IT4571780 1980-05-05

Publications (3)

Publication Number Publication Date
EP0039390A2 true EP0039390A2 (de) 1981-11-11
EP0039390A3 EP0039390A3 (en) 1982-04-28
EP0039390B1 EP0039390B1 (de) 1984-02-08

Family

ID=11257617

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101234A Expired EP0039390B1 (de) 1980-05-05 1981-02-20 Trocknungs- und Reinigungsvorrichtung für einen Kältekreislauf

Country Status (5)

Country Link
EP (1) EP0039390B1 (de)
AT (1) ATE6173T1 (de)
DE (1) DE3162140D1 (de)
ES (1) ES265891Y (de)
IT (1) IT1136391B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002016839A1 (de) * 2000-08-21 2002-02-28 BSH Bosch und Siemens Hausgeräte GmbH Trockner für ein kältegerät
EP1477749A1 (de) * 2003-05-13 2004-11-17 Sergio Daniel Novoa Wärmetauscheranordnung für Kompressionskältesystem

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103291969A (zh) * 2013-06-18 2013-09-11 Tcl空调器(中山)有限公司 空调器性能调试的连接结构和空调器性能调试装置、方法
CN107101426B (zh) * 2016-02-19 2020-11-13 浙江三花智能控制股份有限公司 干燥过滤器的充注管、冰箱和充注管的生产方法
DE102018221326B3 (de) * 2018-12-10 2020-02-13 BSH Hausgeräte GmbH Kältemaschine und diese verwendendes Kältegerät
CN114184070A (zh) * 2020-09-15 2022-03-15 合肥海尔电冰箱有限公司 换热管组件、其制备方法、冰箱

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2623607A (en) * 1949-08-16 1952-12-30 Edward W Bottum Refrigeration dehydrator
US3656625A (en) * 1971-02-17 1972-04-18 Edward W Bottum Drier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002016839A1 (de) * 2000-08-21 2002-02-28 BSH Bosch und Siemens Hausgeräte GmbH Trockner für ein kältegerät
US6681596B2 (en) 2000-08-21 2004-01-27 Bsh Bosch Und Siemens Hausgeraete Gmbh Dryer for a refrigerator and method for mounting the dryer
EP1477749A1 (de) * 2003-05-13 2004-11-17 Sergio Daniel Novoa Wärmetauscheranordnung für Kompressionskältesystem

Also Published As

Publication number Publication date
IT1136391B (it) 1986-08-27
IT8045717A0 (it) 1980-05-05
ATE6173T1 (de) 1984-02-15
EP0039390A3 (en) 1982-04-28
ES265891U (es) 1983-02-01
DE3162140D1 (en) 1984-03-15
EP0039390B1 (de) 1984-02-08
ES265891Y (es) 1983-07-16

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