US20140053593A1 - Refrigerator - Google Patents

Refrigerator Download PDF

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Publication number
US20140053593A1
US20140053593A1 US14/003,577 US201214003577A US2014053593A1 US 20140053593 A1 US20140053593 A1 US 20140053593A1 US 201214003577 A US201214003577 A US 201214003577A US 2014053593 A1 US2014053593 A1 US 2014053593A1
Authority
US
United States
Prior art keywords
restrictor
refrigerator
side wall
segment
condenser
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.)
Abandoned
Application number
US14/003,577
Other languages
English (en)
Inventor
Hans Ihle
Thomas Bischofberger
Cuma Dülger
Panagiotis Fotiadis
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
Assigned to BSH BOSCH UND SIEMENS HAUSGERATE GMBH reassignment BSH BOSCH UND SIEMENS HAUSGERATE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BISCHOFBERGER, THOMAS, DULGER, CUMA, FOTIADIS, PANAGIOTIS, IHLE, HANS
Publication of US20140053593A1 publication Critical patent/US20140053593A1/en
Assigned to BSH Hausgeräte GmbH reassignment BSH Hausgeräte GmbH CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: BSH Bosch und Siemens Hausgeräte GmbH
Assigned to BSH Hausgeräte GmbH reassignment BSH Hausgeräte GmbH CORRECTIVE ASSIGNMENT TO REMOVE USSN 14373413; 29120436 AND 29429277 PREVIOUSLY RECORDED AT REEL: 035624 FRAME: 0784. ASSIGNOR(S) HEREBY CONFIRMS THE CHANGE OF NAME. Assignors: BSH Bosch und Siemens Hausgeräte GmbH
Abandoned 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
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • 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
    • F25D23/00—General constructional features
    • F25D23/006—General constructional features for mounting refrigerating machinery components
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size

Definitions

  • the present invention relates to a refrigerator, in particular a household refrigerator, having a thermally insulating housing, which encloses a storage chamber for items to be chilled, and a refrigerant circuit, which comprises a compressor, a condenser, a restrictor and an evaporator, which cools the storage chamber.
  • a refrigerant circuit which comprises a compressor, a condenser, a restrictor and an evaporator, which cools the storage chamber.
  • the action of such a known refrigerator is based on the fact that the compressor sucks refrigerant in vapor form out of the evaporator and feeds the refrigerant, when it has been heated adiabatically by compression, to the condenser, where it condenses while emitting heat.
  • the liquid refrigerant thus obtained decompresses as it passes through the restrictor and returns to the evaporator adiabatically cooled.
  • the extent of adiabatic cooling is a function of the pressure difference passed through between condenser and evaporator.
  • Theoretically it is possible to approximate the temperature of the refrigerant at the outlet of the condenser to anywhere near the temperature of the environment, to which the condenser emits its heat but the required dimensions of the condenser have to be greater, the smaller this temperature difference is to be.
  • the cooling that can be achieved at the condenser is also limited by parasitic heat transfer between warm, upstream regions of the condenser and cooler downstream regions. When air, which has already been heated in upstream regions of the condenser, flows around a downstream region of the condenser, said downstream region can no longer cool the refrigerant to below the temperature of said air.
  • Refrigerators are known, in which a frame heater is provided to prevent condensation on the housing in the vicinity of a seal positioned between carcass and door of the housing.
  • a frame heater comprises a tube, which is inserted into the refrigerant circuit between compressor and condenser or downstream of the condenser, in order to heat the surfaces of the housing that are susceptible to condensation to above dew point with the compression heat of the refrigerant.
  • the susceptibility to condensation stems from the thermal coupling of said surfaces to the cooled storage chamber, the heat released by the frame heater ultimately also flows into the storage chamber to a significant extent, thereby having a detrimental effect on the energy efficiency of the refrigerator.
  • the object of the present invention is to improve the energy efficiency of a refrigerator, in particular a household appliance.
  • the restrictor is disposed at least partially on a side wall of the housing. Because of its small free cross section compared with other regions of the refrigerant circuit, the restrictor contributes little to the volume of the refrigerant circuit and therefore does not increase the quantity of refrigerant required to operate the refrigerant circuit to any appreciable degree. Being disposed on the side wall, the restrictor is protected from waste heat, which is released by the condenser, which is generally disposed on the rear of the appliance. The side wall is therefore a relatively cool region of the refrigerator housing and allows efficient additional cooling of the refrigerant circulating through the restrictor.
  • the restrictor is preferably disposed in the side wall between an outer skin and an insulating layer of the same in such a manner that it is protected and not visible from the outside.
  • the outer skin of the side wall is preferably metallic.
  • the restrictor is preferably bonded to the outer skin, to ensure that it remains in heat-conducting contact with the outer skin when the insulating layer is applied during assembly of the refrigerator.
  • the insulating layer is preferably produced in the technically standard manner by allowing synthetic resin foam to expand in a hollow space in the housing delimited by the outer skin.
  • an upstream segment of the restrictor is disposed on the side wall.
  • a downstream segment of the restrictor can be positioned in the known manner instead in a suction tube leading from the evaporator to the compressor.
  • this latter preferably has a larger cross section than the downstream segment.
  • this upstream segment should not increase the volume of the refrigerant circuit significantly, it is preferable for the upstream segment to have a free diameter of less than 1 millimeter.
  • the upstream segment preferably has a length of at least 1 meter. In practice the length of the upstream segment will be up to 2 meters in a household refrigerator of standard size.
  • downstream segment and the upstream segment of the condenser are joined to one another outside an insulating layer of the side wall.
  • the refrigerant circuit preferably has a dryer, the refrigerant supply line of which is connected to the upstream end of the restrictor on the side wall for flow purposes.
  • FIG. 1 shows a perspective view of an inventive household refrigerator from the front
  • FIG. 2 shows a perspective view of the refrigerator from the rear
  • FIG. 3 shows a plan view of a section of sheet with a restrictor segment fastened thereto, which forms an outer skin of a side wall of the refrigerator
  • FIG. 4 shows a diagram of the refrigerant circuit of the refrigerator.
  • FIGS. 1 and 2 show perspective views of a counter-height household refrigerator 1 .
  • a thermally insulating housing of the appliance is made up of an essentially cuboid carcass 2 and a door 3 , which together delimit a storage chamber 4 .
  • the carcass 2 has a structure that is known per se, with a plastic deep-drawn inner container 5 , an outer skin joined together from a number of elements and a polyurethane foam insulating layer filling an intermediate space between the inner container 5 and the outer skin.
  • the elements of the outer skin include two sheet sections 6 , which extend in each instance over a side wall of the carcass 2 and are connected to the inner container 5 at a front frame 7 of the carcass 2 facing the door 3 .
  • a machine chamber 8 is cut out at the rear of the carcass 2 close to the bottom and holds a refrigerant compressor 9 .
  • a condenser 10 is connected to a pressure connector of the compressor 9 .
  • the condenser 10 is shown in FIG. 2 as a wire tube heat exchanger mounted on a rear wall of the carcass 2 above the machine chamber 8 but other models of the condenser 10 , in particular as a compact finned tube heat exchanger also accommodated in the machine chamber 8 and force-cooled by a fan, are also possible.
  • a downstream connector of the condenser 10 is connected by way of a sleeve 11 to a restrictor tube 12 , which extends in a looped manner on the inside of one of the sheet sections 6 facing the insulating layer.
  • the sleeves 11 , 16 allow the appliance 1 to be assembled, in that, before the sheet sections 6 are joined to the inner container, the restrictor 12 is fastened to one of the sheet sections 6 , the carcass 2 is joined together so that the ends of the restrictor 12 are exposed in the machine chamber 8 and the carcass is then foamed and finally the restrictor 12 is inserted into the refrigerant circuit with the aid of the sleeves 11 , 16 .
  • FIG. 3 shows a perspective view of the inside of the sheet section 6 with the restrictor tube 12 .
  • the section 6 comprises a flat central plate 13 , which is provided to form the outer skin of a side wall of the carcass 2 and to which the restrictor tube 12 is fastened with the aid of adhesive tape strips 14 .
  • Webs 15 angled away from the central plate 13 extend in the finished appliance 1 to its front frame 7 or its rear and are connected there to the inner container 5 or a rear wall plate (not shown) in a foam-tight manner.
  • a second sleeve 16 disposed in the machine chamber 8 connects the restrictor tube 12 to a second, narrower restrictor tube 17 , which traverses the insulating layer of the carcass 2 to ensure that the evaporator 18 is disposed in close thermal contact with the storage chamber 4 .
  • the restrictor tube 17 passes directly along the surface of a suction tube 19 , which passes from the evaporator 18 to the compressor 9 , or within said suction tube 19 .
  • the volume of the refrigerant circuit as a whole changes little—despite the restrictor tube 12 being typically 1 to 2 meters long—compared with a conventional refrigerant circuit of a refrigerator of the same size and therefore the quantity of circulating refrigerant required for efficient operation also changes little.
  • the restrictor tube 12 runs along the central plate 13 at a distance from the web 15 connected to the inner container 5 , the flow of heat from the restrictor tube 12 to the storage chamber 4 by way of the connection between sheet section 6 and inner container 5 is negligible.
  • the restrictor tube 12 is shielded from heat emitted from the condenser 10 by its spatial distance from the condenser 10 . Therefore it is possible to achieve more efficient cooling of the refrigerant with the restrictor tube 12 than by enlarging the condenser 10 by the volume of the restrictor tube 12 .
  • the appliance 1 is preferably positioned in such a manner that the side wall containing the restrictor tube 12 is exposed so that heat emitted from the restrictor tube 12 can be passed quickly to the environment.
  • the invention can however also be used—if only with little scope—in a refrigerator with a concealed side wall, for example a built-in appliance or a counter-height appliance flanked at the sides by other objects.
  • the sheet section 6 here operates as a thermal storage unit, which absorbs heat from the restrictor tube 12 while the compressor 9 is operational and drives refrigerant circulation. In a subsequent stoppage phase of the compressor the heat of the sheet section 6 can also be distributed to the environment with such a refrigerator.

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)
US14/003,577 2011-03-28 2012-03-09 Refrigerator Abandoned US20140053593A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102011006260A DE102011006260A1 (de) 2011-03-28 2011-03-28 Kältegerät
DE102011006260.2 2011-03-28
PCT/EP2012/054059 WO2012130584A2 (de) 2011-03-28 2012-03-09 Kältegerät

Publications (1)

Publication Number Publication Date
US20140053593A1 true US20140053593A1 (en) 2014-02-27

Family

ID=45811507

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/003,577 Abandoned US20140053593A1 (en) 2011-03-28 2012-03-09 Refrigerator

Country Status (8)

Country Link
US (1) US20140053593A1 (es)
EP (1) EP2691713B1 (es)
CN (1) CN103477169B (es)
DE (1) DE102011006260A1 (es)
ES (1) ES2544837T3 (es)
PL (1) PL2691713T3 (es)
RU (1) RU2553251C2 (es)
WO (1) WO2012130584A2 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102449175B1 (ko) 2017-08-01 2022-09-29 엘지전자 주식회사 진공단열체 및 냉장고
KR102529116B1 (ko) 2017-08-01 2023-05-08 엘지전자 주식회사 진공단열체, 진공단열체의 제작방법, 및 그 진공단열체로 단열하는 냉온장고
KR102459784B1 (ko) 2017-08-01 2022-10-28 엘지전자 주식회사 진공단열체 및 냉장고
KR102427466B1 (ko) 2017-08-01 2022-08-01 엘지전자 주식회사 차량, 차량용 냉장고, 및 차량용 냉장고의 제어방법
KR102449177B1 (ko) 2017-08-01 2022-09-29 엘지전자 주식회사 진공단열체 및 냉장고
KR102459786B1 (ko) 2017-08-16 2022-10-28 엘지전자 주식회사 진공단열체 및 냉장고

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2446853A (en) * 1945-08-10 1948-08-10 Franklin Transformer Mfg Compa Restrictor-suction line assembly
US2448315A (en) * 1945-02-14 1948-08-31 Gen Motors Corp Combination restrictor and heat exchanger
US2515212A (en) * 1947-07-24 1950-07-18 Nash Kelvinator Corp Refrigerating apparatus
GB697421A (en) * 1951-08-03 1953-09-23 Longford Engineering Company L Improvements in or relating to impedance tubes for refrigerators
US2776552A (en) * 1954-11-08 1957-01-08 Reynolds Metals Co Sheathed capillary inlet for refrigerator
US3135316A (en) * 1960-09-02 1964-06-02 Foster Refrigerator Corp Convertible heating and cooling food storage cabinet
US4147037A (en) * 1976-10-27 1979-04-03 General Electric Company High efficiency heat exchange for refrigeration suction line/capillary tube assembly
US5269158A (en) * 1991-06-22 1993-12-14 Krupp Vdm Gmbh Evaporator for a compressor-refrigerating apparatus
US7131294B2 (en) * 2004-01-13 2006-11-07 Tecumseh Products Company Method and apparatus for control of carbon dioxide gas cooler pressure by use of a capillary tube
US7320228B2 (en) * 2004-08-12 2008-01-22 Sanyo Electric Co., Ltd. Refrigerant cycle apparatus
US20110146957A1 (en) * 2008-06-03 2011-06-23 Airbus Operations Gmbh System And Method For Cooling A Device Subjected To Heat In A Vehicle, Particularly An Aircraft

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB296353A (en) * 1927-08-29 1929-11-07 Philipp Conrady Improvements in or relating to refrigerating machines for domestic and like refrigerators
DE589389C (de) * 1932-12-31 1933-12-09 Robert Bosch Akt Ges Durch eine Kaeltemaschine betriebener Haushaltkuehlschrank
GB1032702A (en) * 1962-11-19 1966-06-15 Electrolux Ltd Improvements in or relating to refrigerated cabinets
RU2095703C1 (ru) * 1992-06-08 1997-11-10 Игорь Наумович Красновский Многокамерный холодильник
JP2003042655A (ja) * 2001-07-27 2003-02-13 Toshiba Corp 冷蔵庫
KR100523035B1 (ko) * 2003-01-24 2005-10-24 삼성전자주식회사 냉장고용 일체형 흡입배관세트와 냉장고
DE102004014926A1 (de) * 2004-03-26 2005-10-13 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit zwei Lagerfächern
DE202007014077U1 (de) * 2006-10-09 2008-02-21 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
DE102007048386A1 (de) * 2006-10-09 2008-04-10 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448315A (en) * 1945-02-14 1948-08-31 Gen Motors Corp Combination restrictor and heat exchanger
US2446853A (en) * 1945-08-10 1948-08-10 Franklin Transformer Mfg Compa Restrictor-suction line assembly
US2515212A (en) * 1947-07-24 1950-07-18 Nash Kelvinator Corp Refrigerating apparatus
GB697421A (en) * 1951-08-03 1953-09-23 Longford Engineering Company L Improvements in or relating to impedance tubes for refrigerators
US2776552A (en) * 1954-11-08 1957-01-08 Reynolds Metals Co Sheathed capillary inlet for refrigerator
US3135316A (en) * 1960-09-02 1964-06-02 Foster Refrigerator Corp Convertible heating and cooling food storage cabinet
US4147037A (en) * 1976-10-27 1979-04-03 General Electric Company High efficiency heat exchange for refrigeration suction line/capillary tube assembly
US5269158A (en) * 1991-06-22 1993-12-14 Krupp Vdm Gmbh Evaporator for a compressor-refrigerating apparatus
US7131294B2 (en) * 2004-01-13 2006-11-07 Tecumseh Products Company Method and apparatus for control of carbon dioxide gas cooler pressure by use of a capillary tube
US7320228B2 (en) * 2004-08-12 2008-01-22 Sanyo Electric Co., Ltd. Refrigerant cycle apparatus
US20110146957A1 (en) * 2008-06-03 2011-06-23 Airbus Operations Gmbh System And Method For Cooling A Device Subjected To Heat In A Vehicle, Particularly An Aircraft

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Bosch GB 406,965 *

Also Published As

Publication number Publication date
WO2012130584A3 (de) 2012-11-22
EP2691713B1 (de) 2015-07-15
CN103477169B (zh) 2016-03-02
ES2544837T3 (es) 2015-09-04
DE102011006260A1 (de) 2012-10-04
RU2553251C2 (ru) 2015-06-10
RU2013143743A (ru) 2015-05-10
WO2012130584A2 (de) 2012-10-04
EP2691713A2 (de) 2014-02-05
CN103477169A (zh) 2013-12-25
PL2691713T3 (pl) 2015-12-31

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AS Assignment

Owner name: BSH BOSCH UND SIEMENS HAUSGERATE GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:IHLE, HANS;BISCHOFBERGER, THOMAS;DULGER, CUMA;AND OTHERS;SIGNING DATES FROM 20130821 TO 20130923;REEL/FRAME:031560/0462

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Effective date: 20150323

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Owner name: BSH HAUSGERAETE GMBH, GERMANY

Free format text: CORRECTIVE ASSIGNMENT TO REMOVE USSN 14373413; 29120436 AND 29429277 PREVIOUSLY RECORDED AT REEL: 035624 FRAME: 0784. ASSIGNOR(S) HEREBY CONFIRMS THE CHANGE OF NAME;ASSIGNOR:BSH BOSCH UND SIEMENS HAUSGERAETE GMBH;REEL/FRAME:036000/0848

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