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WO2013000757A2 - Appareil frigorifique à évaporateur - Google Patents

Appareil frigorifique à évaporateur Download PDF

Info

Publication number
WO2013000757A2
WO2013000757A2 PCT/EP2012/061632 EP2012061632W WO2013000757A2 WO 2013000757 A2 WO2013000757 A2 WO 2013000757A2 EP 2012061632 W EP2012061632 W EP 2012061632W WO 2013000757 A2 WO2013000757 A2 WO 2013000757A2
Authority
WO
WIPO (PCT)
Prior art keywords
evaporator
appliance according
refrigerant
capillary throttle
refrigerating appliance
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.)
Ceased
Application number
PCT/EP2012/061632
Other languages
German (de)
English (en)
Other versions
WO2013000757A3 (fr
Inventor
Michael Howe
Matthias Mrzyglod
Berthold Pflomm
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete 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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of WO2013000757A2 publication Critical patent/WO2013000757A2/fr
Publication of WO2013000757A3 publication Critical patent/WO2013000757A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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

Definitions

  • the present invention relates to a refrigeration appliance, in particular household refrigeration appliance, with an evaporator.
  • Conventional domestic refrigerators such as refrigerators, freezers, etc.
  • a refrigerant circuit in which a compressor, a condenser, and an evaporator are connected in series, with a high pressure area of the refrigerant circuit ranging from the compressor to a capillary restrictor which is the entrance of the evaporator forms a low pressure range from the evaporator to the input of the compressor.
  • the pressure drop from the high pressure area to the low pressure area gradually takes place on the way of the refrigerant through the capillary throttle. Therefore, during the passage of the refrigerant through the capillary throttle, partial evaporation may occur. This leads to a strong noise at the outlet of the capillary throttle, which is perceived by users of refrigeration equipment as disturbing.
  • Object of the present invention is to develop a cooling circuit for a refrigerator, in particular household refrigeration appliance, which uses a capillary throttle to relax the refrigerant and in which excessive noise during the expansion of the refrigerant is avoided.
  • Evaporator entry can be effected.
  • the resulting from the evaporation of the refrigerant in the evaporator or evaporator inlet is due to the thermal Coupling between the evaporator inlet and the capillary choke used to re-cool the capillary throttle and the refrigerant therein, whereby the
  • Refrigerant at the evaporator inlet can be cooled even further.
  • the reduction of the gas fraction at the evaporator inlet is also realized particularly advantageously. If the gas content at the evaporator inlet is reduced, so large gas bubbles can not form, which could cause noticeable and therefore disturbing noises. Due to a sufficient cooling of the refrigerant, the formation of gas bubbles is thus prevented upon injection of the refrigerant into the evaporator at the evaporator inlet. In this way, a noise by gas bubbles at the evaporator inlet is prevented.
  • the invention relates to a refrigeration device, comprising an evaporator with an evaporator inlet for receiving refrigerant to be evaporated, a suction line downstream of the evaporator for discharging the evaporated refrigerant from the evaporator, one of the suction line
  • Fluidically downstream compressor for compressing the refrigerant, a compressor downstream of the compressor condenser for liquefying the refrigerant and a condenser downstream of the condenser
  • a refrigeration device Under a refrigeration device is in particular a household refrigeration appliance understood, ie a refrigeration appliance for household management in households or possibly in the
  • Catering area is used, and in particular serves to store food and / or drinks in household quantities at certain temperatures, such as a refrigerator, a freezer, a fridge-freezer, a freezer or a wine storage cabinet.
  • the capillary throttle is upstream of the evaporator, in particular the evaporator inlet, in terms of flow.
  • the refrigerant at the outlet of the capillary throttle is thereby fed directly to the evaporator inlet.
  • the evaporator inlet is provided to the evaporator inlet
  • Recool capillary throttle This re-cooling is effected by the cold produced in the evaporator of the refrigerant in the evaporator due to the thermal coupling between the evaporator inlet and the capillary throttle.
  • the capillary throttle is downstream of the condenser fluidly. As a result, the capillary throttle receives the liquefied refrigerant from the condenser.
  • the capillary throttle is a capillary tube.
  • the capillary throttle is attached to the evaporator inlet or in the evaporator inlet heat-conducting, in particular by gluing, soldering, shrinking or joining. This can be effected in a particularly advantageous manner, a thermal coupling.
  • the capillary throttle is thermally connected longitudinally to the evaporator inlet. This creates a thermal coupling path, which allows efficient thermal coupling.
  • the capillary throttle with the evaporator inlet which may be for example an injection tube, is thermally coupled along a length of more than 400 mm and less than 600 mm, in particular along a length of about 500 mm.
  • the evaporator inlet is an inlet pipe, in particular an injection pipe.
  • the evaporator is a tube evaporator, in particular a tube coil evaporator or a plate evaporator. Is this the case
  • the suction line is a suction tube.
  • a desiccant is disposed between the condenser and the capillary throttle, which comprises, for example, zeolite and is intended to dehumidify the refrigerant.
  • the desiccant absorbs any residual water present in the refrigerant and binds it.
  • the refrigerant is passed through the desiccant.
  • the bound water remains in the desiccant and is bound by it.
  • the refrigeration device comprises a refrigerated goods container, wherein the evaporator is arranged outside of the refrigerated goods container.
  • the evaporator can, for example, be arranged on the outside of the refrigerated goods container, for example wound, in order to cool it.
  • Fig. 1 a refrigeration device
  • FIG. 2 shows a refrigerated goods container with an external evaporator
  • FIG 3 shows a refrigerated goods container with an external evaporator.
  • FIG. 1 shows a refrigerator 100 with an evaporator 101 for evaporating
  • the refrigerant to be evaporated is the evaporator 101 via the
  • Evaporator inlet 103 supplied. After evaporation, the vaporized refrigerant is guided out of the evaporator 101 by means of the suction line 105 and fed to a compressor 107.
  • the compressor 107 is fluidly downstream of a condenser 109, in which the compressed by the compressor 107 refrigerant is liquefied.
  • the liquid refrigerant can optionally transferred by a desiccant 1 1 1, for example, has zeolite and is intended to extract water from the liquid refrigerant.
  • the liquid refrigerant originating from the condenser 109 is supplied to a capillary throttle 13, which is provided to cool the liquid refrigerant.
  • An output of the capillary throttle 1 13 is connected to the evaporator inlet 103, so that the
  • a section of the capillary throttle is 13
  • the evaporator inlet 103 is thermally coupled to the evaporator inlet 103 over a length d.
  • the length d may be 500 mm, for example.
  • the evaporator inlet 103 is additionally cooled by recooling the refrigerant which can be fed thereto, whereby the formation of gas bubbles that are too large can be prevented when the refrigerant is injected into the evaporator. This will be any
  • the capillary throttle 1 13 is longitudinally connected to the
  • Evaporator inlet 103 connected.
  • a portion of the capillary throttle 13 may be wound around the evaporator inlet 103 with a winding length of, for example, more than 400 mm and less than 600 mm, preferably about 500 mm.
  • a winding length of, for example, more than 400 mm and less than 600 mm, preferably about 500 mm.
  • the capillary throttle 1 13 may, for example, be a capillary tube which, as shown in FIG. 1, may optionally have a plurality of windings. According to another
  • the thermal coupling inside the evaporator inlet i. for example, on the inner wall, are performed.
  • the compressor 107, the condenser 109 and the desiccant 1 1 1 can be realized in a conventional manner.
  • the evaporator inlet 103 as well as the portion of the capillary throttle thermally coupled thereto are enveloped with a foam layer or they are guided through a foam layer. This can be prevented will be that the evaporator inlet 103 is positioned directly on an evaporator heat exchanger surface, whereby the thermal efficiency is increased.
  • the length of the thermal connection is preferably chosen such that, on the one hand, a heat exchange is made possible and, on the other hand, the efficiency of the evaporator is not adversely affected by an excessive heat input of the capillary throttle 13 into the evaporator inlet 103.
  • the capillary throttle 1 13 can not be made arbitrarily long. For these reasons, the heat exchanger path, i. the distance along which the capillary throttle 1 13 is thermally coupled to the evaporator inlet 103,
  • the shaft for example, longer than 400 mm and shorter than 600 mm.
  • the shaft for example, longer than 400 mm and shorter than 600 mm.
  • Heat exchanger section 500 mm Due to the heat exchange between the capillary 1 13 and the
  • FIG. 2 shows a section of a refrigeration appliance with a refrigerated goods container 201 and evaporator coils 203, which lie outside about a section of the refrigerator
  • Refrigerated goods container 201 are wound around.
  • the evaporator coils 203 form an evaporator having an evaporator inlet 205 for supplying refrigerant to the evaporator
  • a capillary throttle 209 is also shown, which may, for example, have one or more windings 21 1 and which comprises a capillary throttle section 213, which is thermally coupled to the evaporator inlet 105.
  • the Kapillardrosselabites can, for example, along the
  • Evaporator inlet be connected.
  • FIG. 3 is an enlarged view of the portion of FIG.
  • Evaporator comprises lying outside of an interior of the container 201
  • the evaporator can be an internal evaporator with evaporator coils, which can be arranged in the interior of the container 201. In both cases, the evaporator inlet 213? together with the
  • Capillary throttle portion 205 are guided by foam, whereby the thermal exchange between the capillary throttle 209 and the evaporator inlet 205 can be improved.

Landscapes

  • 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)

Abstract

L'invention concerne un appareil frigorifique, en particulier un appareil frigorifique domestique, qui comprend un évaporateur (101) doté d'une entrée d'évaporateur (103) pour la réception du fluide frigorigène à vaporiser, une conduite d'aspiration (105) montée en aval de l'évaporateur (101) dans le sens de l'écoulement, pour conduire le fluide frigorigène vaporisé hors de l'évaporateur (101), un compresseur (107) monté en aval de la conduite d'aspiration (105) dans le sens de l'écoulement, pour comprimer le fluide frigorigène, un condenseur (109) monté en aval du compresseur (107) dans le sens de l'écoulement, pour condenser le fluide frigorigène, et un restricteur capillaire (113) monté en aval du condenseur (109) dans le sens de l'écoulement, qui est couplé thermiquement à l'entrée de l'évaporateur (103).
PCT/EP2012/061632 2011-06-29 2012-06-19 Appareil frigorifique à évaporateur Ceased WO2013000757A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011078317.2 2011-06-29
DE102011078317A DE102011078317A1 (de) 2011-06-29 2011-06-29 Kältegerät mit einem Verdampfer

Publications (2)

Publication Number Publication Date
WO2013000757A2 true WO2013000757A2 (fr) 2013-01-03
WO2013000757A3 WO2013000757A3 (fr) 2013-05-10

Family

ID=46320979

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/061632 Ceased WO2013000757A2 (fr) 2011-06-29 2012-06-19 Appareil frigorifique à évaporateur

Country Status (2)

Country Link
DE (1) DE102011078317A1 (fr)
WO (1) WO2013000757A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021127839A1 (de) 2021-08-26 2023-03-02 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
DE102021128680A1 (de) 2021-08-26 2023-03-02 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
DE102021128677A1 (de) 2021-08-26 2023-03-02 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
DE102021127847A1 (de) 2021-08-26 2023-03-02 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4141355A1 (fr) * 2021-08-26 2023-03-01 Liebherr-Hausgeräte Ochsenhausen GmbH Appareil de refroidissement et/ou de congélation
EP4141360A1 (fr) * 2021-08-26 2023-03-01 Liebherr-Hausgeräte Ochsenhausen GmbH Appareil de refroidissement et/ou de congélation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2472729A (en) * 1940-04-11 1949-06-07 Outboard Marine & Mfg Co Refrigeration system
US2740263A (en) * 1953-04-06 1956-04-03 Richard W Kritzer Feed control means for refrigerating apparatus
US2956421A (en) * 1957-04-04 1960-10-18 Borg Warner Capillary refrigerating systems
US3172272A (en) * 1962-06-19 1965-03-09 Westinghouse Electric Corp Air conditioning apparatus
US4304099A (en) * 1980-01-24 1981-12-08 General Electric Company Means and method for the recovery of expansion work in a vapor compression cycle device
JP3432701B2 (ja) * 1997-06-11 2003-08-04 株式会社東芝 冷却装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021127839A1 (de) 2021-08-26 2023-03-02 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
DE102021128680A1 (de) 2021-08-26 2023-03-02 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
DE102021128677A1 (de) 2021-08-26 2023-03-02 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
DE102021127847A1 (de) 2021-08-26 2023-03-02 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät

Also Published As

Publication number Publication date
DE102011078317A1 (de) 2013-01-03
WO2013000757A3 (fr) 2013-05-10

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