EP1557623A1 - Kühlvorrichtung - Google Patents

Kühlvorrichtung Download PDF

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Publication number
EP1557623A1
EP1557623A1 EP03799145A EP03799145A EP1557623A1 EP 1557623 A1 EP1557623 A1 EP 1557623A1 EP 03799145 A EP03799145 A EP 03799145A EP 03799145 A EP03799145 A EP 03799145A EP 1557623 A1 EP1557623 A1 EP 1557623A1
Authority
EP
European Patent Office
Prior art keywords
compressor
refrigerant
refrigerator
machine room
extended
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
EP03799145A
Other languages
English (en)
French (fr)
Other versions
EP1557623A4 (de
EP1557623B1 (de
Inventor
Minoru Intellectual Property Division Temmyo
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Publication of EP1557623A1 publication Critical patent/EP1557623A1/de
Publication of EP1557623A4 publication Critical patent/EP1557623A4/de
Application granted granted Critical
Publication of EP1557623B1 publication Critical patent/EP1557623B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • 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
    • 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
    • F25B2400/12—Inflammable refrigerants
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/24—Protection against refrigerant explosions
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/32—Removal, transportation or shipping of refrigerating devices from one location to another

Definitions

  • This invention relates to a refrigerator and particularly to a piping construction in a machine room for a refrigeration circuit using a hydrocarbon refrigerant.
  • hydrocarbon (HC) refrigerant such as isobutane (R600a), which cause no ozone depletion and are low in global warming coefficients.
  • the hydrocarbon refrigerant such as isobutane has high extent of solubility in the refrigerating machine oil and such solubility tends to become remarkably high in low-temperature range, as clear from curve chart of Fig. 6 that shows curves representing solubility of isobutane in the refrigerating machine oil.
  • the hydrocarbon refrigerant is flammable and may cause fire disaster when leaked out and then ignited by a spark.
  • detectors for refrigerant leakage are arranged in vicinity of the cooler(s), and leaked refrigerant is forcedly evacuated via through holes that also serve for drainage for water brought about by defrost procedure. Please see JP-09(1997)-329386A for example.
  • the refrigerators At disposal of the refrigerators for recycling, contrary to a manner of transportation during time on sale or usage, the refrigerators are in many occasions piled up in postures of lying on their side other than a normal upright posture.
  • the refrigerating machine oil held at bottom of the compressor (69) which is usually a reciprocating compressor, may flow out to piping in the cabinet (1) through a suction pipe (75) comprising the refrigerant circuit.
  • FIG. 7 showing a conventional construction of the machine room, an end of a suction pipe (75) that is taken out from a not-shown cooler is connected with the compressor (69).
  • the compressor (69) When the refrigerator is laid on its side, if the left-hand side on the illustration, which is near to a portion the suction pipe (75) is taken out, becomes upside, no flow out of the refrigerating machine oil occurs.
  • the portion from which the suction pipe (75) is taken out becomes downside in a contrary manner, the refrigerating machine oil in the compressor (69) flows down with gravity, goes through the suction pipe (75) and then flows into piping in the cabinet (1) such as the cooler.
  • the refrigerators before disposal processing are stored in the open air, in many occasions. Especially in winter season, temperature of the cabinet drops and the amount of the hydrocarbon refrigerant dissolved in the refrigerating machine oil becomes extremely high as mentioned before. Such hydrocarbon refrigerant along with the refrigerating machine oil flows into the cabinet proper in a large amount. When crushing of the cabinet proper is made in such state, the refrigerating machine oil flows out from various pipes in the refrigerant circuit having been crushed, and the flammable hydrocarbon refrigerant gushes out from the refrigerating machine oil, as to cause a problem of high risk of catching fire.
  • Present invention is made in view of the above in respect of the refrigerator using the flammable hydrocarbon refrigerant, and is aimed to prevent flowing of the refrigerating machine oil into the cabinet even when stored or transported in a state laid on its side as to prevent the risk of catching fire.
  • a refrigerator of claim 1 of the invention comprises: a refrigerant circuit using a flammable refrigerant, which is comprised of a compressor, a condenser, a throttling device and a cooler; a machine room that is formed on beneath of a heat-insulator box and is provided with the compressor and with pipes extended from elements of the refrigerant circuit within a cabinet proper as to be connected to the compressor; and a go-and-return portion extending in a right-left-wise span of the compressor in its upright posture and a portion extending then forward out of rear side of the compressor, which portions are extended from the pipe that runs from a lead taken out from the cabinet proper into the machine room, to a juncture on a face of the compressor.
  • a refrigerant circuit using a flammable refrigerant which is comprised of a compressor, a condenser, a throttling device and a cooler
  • a machine room that is formed on beneath of a heat-insulator box and
  • a refrigerator of claim 2 of the invention comprises: a refrigerant circuit using a flammable refrigerant, which is comprised of a compressor, a condenser, a throttling device and a cooler; a machine room that is formed on beneath of a heat-insulator box and is provided with the compressor and with pipes extended from elements of the refrigerant circuit within a cabinet proper as to be connected to the compressor; and a first trap extending go-and-return wise in a right-left-wise span of the compressor and a second trap extending then forward out of rear side of the compressor and being disposed on an end of the first trap, which first and second traps are extended from the pipe that runs from a lead taken out from the cabinet proper into the machine room, to a juncture on a face of the compressor.
  • a flammable refrigerant which is comprised of a compressor, a condenser, a throttling device and a cooler
  • a machine room that is formed on beneath of a
  • a refrigerator of claim 3 of the invention comprises: a refrigerant circuit using a flammable refrigerant, which is comprised of a compressor, a condenser, a throttling device and an evaporator or cooler; a machine room that is formed on beneath of a heat-insulator box and is provided with the compressor and with pipes extended from elements of the refrigerant circuit within a cabinet proper as to be connected to the compressor; and a trap extending forward from rear side of the compressor, which trap is extended from the pipe that runs from a lead taken out from the cabinet proper into the machine room, to a juncture on a face of the compressor at a side opposite to the lead.
  • a flammable refrigerant which is comprised of a compressor, a condenser, a throttling device and an evaporator or cooler
  • a machine room that is formed on beneath of a heat-insulator box and is provided with the compressor and with pipes extended from elements of the refrigerant circuit within a
  • the pipe that runs from the lead runs by way of a place substantially at center of the right-left-wise span of the compressor.
  • a refrigerator of claim 5 of the invention comprises: a refrigerant circuit using a flammable refrigerant, which is comprised of a compressor, a condenser, a throttling device and an evaporator or cooler; a machine room that is formed on beneath of a heat-insulator box and is provided with the compressor and pipes extended from elements of the refrigerant circuit within a cabinet proper as to be connected to the compressor; and a one-way valve provided on a suction pipe connected to the compressor, specific gravity of a valve plug or disc of the one-way valve being larger than that of refrigerating machine oil.
  • FIG. 1 is a perspective view of a machine room of the refrigerator seen from its rear side.
  • the machine room (2) is disposed on a rear-beneath side of the cabinet proper (1) and is defined by; a tilted bottom board (4) at below of a rear board (3) of outer casing, right-hand and left-hand sideboards (5) (6) and a compressor base plate (7) that forms bottom of the machine room.
  • a compressor (9) is installed with a cushion stuff (8) therebetween.
  • compressor (9) forming a part of a refrigerant circuit sends out the refrigerant through a delivery pipe (10) into a condenser (11) formed of a heat radiating pipe, which is disposed on the rear board (3) of the outer casing and rear faces of the sideboards (5) (6) and bottom face of the casing of the refrigerator, and into a throttling device (12) and the like. Then, thus sent refrigerant is introduced in a not-shown coolers disposed in the cabinet as to achieve cooling action.
  • reciprocating compressors formed of low-pressure casings are mostly adopted, while rotary compressors are also adopted.
  • a suction pipe (15) for returning gasified refrigerant into the compressor (9) is led out into the machine room through a bottom of the rear board (3) at its right-hand or left-hand side, and is directly connected to a suction port (9a) on the compressor (9) at its side facing the lead (15a).
  • the suction pipe (15) runs downward from a lead (15a) jutting into the machine room (2), then runs to and reaches a place substantially at center of right-left-wise span of the compressor (9), and subsequently makes a U-turn as to make a trap (15b) in a go-and-return wise.
  • the suction pipe (15) runs frontward in a space between the lead (15a) and the compressor (9) out of a rear side in respect of the compressor (9), then reaches a place substantially at center of front-rear-wise span of the compressor (9), and subsequently also makes a U-turn as to make a second trap (15c).
  • the end of the second trap (15c) is connected to the suction port (9a) of the compressor (9).
  • the suction port (9a) is not necessarily disposed on a rightward- or leftward-facing side of the casing (9e) of the compressor (9) as shown in Fig. 1, and may be disposed on a rear side of the casing (9e) that has circular contour.
  • Fig. 2 schematically shows a sectional construction of a reciprocating compressor.
  • the refrigerating machine oil (16) is enclosed in the casing (9e) of the compressor (9) in an illustrated position in respect of the delivery pipe (10), the suction pipe (15), a motor (9b) and a compressor cylinder (9c).
  • the delivery pipe (10) is connected with the cylinder (9c) and the piston (9d) at inside of the compressor (9) if the compressor is of reciprocating ones as in this embodiment.
  • the refrigerating machine oil never flows out through the delivery pipe even when the refrigerator lies on its side.
  • FIG. 3 in which same reference numerals are respectively given to same parts or elements as in Fig. 1, shows an example where the suction pipe (35) is led out into the machine room through a bottom of the rear board (3) at near its corner; and the suction pipe (35) is connected to a suction port (29a) on the compressor (29) at a side opposite and remote to the suction pipe.
  • the suction pipe (35) runs downward from the lead (35a) jutting out into the machine room (2) and then frontward into a space between the lead (35a) and the compressor (29) from a side rear than the compressor (29), then reaches a place substantially at center of front-rear-wise span of the compressor (29), and subsequently makes a U-turn as to make a trap (35c).
  • the end of the trap (35c) is extended to run along a rear side of the compressor (29) as to enter a space opposite to the lead and then connected to the suction port (29a) of the compressor (29).
  • a one-way valve (55a) is disposed on a suction pipe (55) on the reciprocating compressor (49) .
  • a valve plug or disc of the one-way valve (55a) is designed to be larger in specific gravity than the refrigerating machine oil.
  • the one-way valve (55a) is originally disposed for averting reverse flow of the refrigerant from the compressor (49) to the suction pipe (55) .
  • the juncture of the suction pipe (55) and the compressor may come to bottom of the compressor.
  • the specific gravity of the valve plug or disc in the one-way valve (55a) is smaller than that of the refrigerating machine oil, the valve plug or disc would float up due to its buoyancy, and thus, the one-way valve becomes not closable.
  • the specific gravity of the valve plug or disc is designed to be larger than that of the refrigerating machine oil. In this way, flowing out of the refrigerating machine oil through the suction pipe is averted even when the cabinet proper is lying on its side or toppled sideways in any direction.
  • the pipe connecting the leads jutting into the machine room to the suction or discharge ports has a portion coming above the surface level of the refrigerating machine oil, according to the invention-wise refrigerator.
  • averted is leaking out of the refrigerating machine oil through piping in a cabinet proper having been crushed, at a time the refrigerator is processed to be crushed; and thereby, averted are the gushing out of the flammable refrigerant having been dissolved in the refrigerating machine oil and risk of catching fire under some circumstances.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP03799145A 2002-10-07 2003-09-26 Kühlvorrichtung Expired - Lifetime EP1557623B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2002293954 2002-10-07
JP2002293954A JP3946611B2 (ja) 2002-10-07 2002-10-07 冷蔵庫
PCT/JP2003/012374 WO2004031666A1 (ja) 2002-10-07 2003-09-26 冷蔵庫

Publications (3)

Publication Number Publication Date
EP1557623A1 true EP1557623A1 (de) 2005-07-27
EP1557623A4 EP1557623A4 (de) 2006-04-12
EP1557623B1 EP1557623B1 (de) 2009-11-18

Family

ID=32064021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03799145A Expired - Lifetime EP1557623B1 (de) 2002-10-07 2003-09-26 Kühlvorrichtung

Country Status (7)

Country Link
EP (1) EP1557623B1 (de)
JP (1) JP3946611B2 (de)
KR (1) KR20050054982A (de)
CN (1) CN100439826C (de)
DE (1) DE60330175D1 (de)
TW (1) TWI245873B (de)
WO (1) WO2004031666A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1598620A2 (de) * 2004-05-18 2005-11-23 Lg Electronics Inc. Kühlschrank mit Schwingungsdämpfung
EP2369268A3 (de) * 2010-03-25 2013-09-04 Mondial Group S.R.L. Hochleistungskühlvorrichtung
RU2664298C2 (ru) * 2014-04-08 2018-08-16 Бсх Хаусгерете Гмбх Бытовой холодильный аппарат, содержащий компрессор с опорами компрессора

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1323269C (zh) * 2004-07-19 2007-06-27 广东科龙电器股份有限公司 一种立卧两用电冰箱
JP4496944B2 (ja) * 2004-10-20 2010-07-07 パナソニック株式会社 冷蔵庫
JP2010181130A (ja) * 2009-02-09 2010-08-19 Daikin Ind Ltd 空気調和機の室外機
DE102011004592A1 (de) * 2011-02-23 2012-08-23 BSH Bosch und Siemens Hausgeräte GmbH Elektrisches Haushaltsgerät
CN105135768A (zh) * 2015-09-30 2015-12-09 海信容声(广东)冷柜有限公司 一种制冷装置及其控制方法
CN106813438B (zh) * 2016-12-01 2019-12-06 青岛海尔股份有限公司 有油压机顶置的冰箱
CN110887263B (zh) * 2018-09-10 2021-07-13 安徽美芝制冷设备有限公司 压缩机系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5841280A (ja) * 1981-09-04 1983-03-10 Matsushita Electric Ind Co Ltd 圧縮機の防音構造
US5890375A (en) * 1996-02-28 1999-04-06 Aktiebolaget Electrolux Arrangement at a tube evaporator
EP0949465A2 (de) * 1998-04-08 1999-10-13 Matsushita Electric Industrial Co., Ltd. Verdichter für Kältekreislauf
EP0992750A1 (de) * 1998-10-05 2000-04-12 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08233381A (ja) * 1995-02-28 1996-09-13 Hitachi Ltd 低温用機器
CN2260211Y (zh) * 1996-05-15 1997-08-20 张晓辉 下水道用浮子式止回阀
JP3443785B2 (ja) * 1996-06-07 2003-09-08 株式会社日立製作所 冷蔵庫
JP2002081819A (ja) * 2000-09-01 2002-03-22 Sanyo Electric Co Ltd ショーケース

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5841280A (ja) * 1981-09-04 1983-03-10 Matsushita Electric Ind Co Ltd 圧縮機の防音構造
US5890375A (en) * 1996-02-28 1999-04-06 Aktiebolaget Electrolux Arrangement at a tube evaporator
EP0949465A2 (de) * 1998-04-08 1999-10-13 Matsushita Electric Industrial Co., Ltd. Verdichter für Kältekreislauf
EP0992750A1 (de) * 1998-10-05 2000-04-12 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 124 (M-218), 28 May 1983 (1983-05-28) & JP 58 041280 A (MATSUSHITA DENKI SANGYO KK), 10 March 1983 (1983-03-10) *
See also references of WO2004031666A1 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1598620A2 (de) * 2004-05-18 2005-11-23 Lg Electronics Inc. Kühlschrank mit Schwingungsdämpfung
EP1598620A3 (de) * 2004-05-18 2006-01-04 Lg Electronics Inc. Kühlschrank mit Schwingungsdämpfung
US7257961B2 (en) 2004-05-18 2007-08-21 Lg Electronics Inc. Vibration reduction type refrigerator
EP2369268A3 (de) * 2010-03-25 2013-09-04 Mondial Group S.R.L. Hochleistungskühlvorrichtung
RU2664298C2 (ru) * 2014-04-08 2018-08-16 Бсх Хаусгерете Гмбх Бытовой холодильный аппарат, содержащий компрессор с опорами компрессора
US10697691B2 (en) 2014-04-08 2020-06-30 BSH Hausgeräte GmbH Domestic refrigeration appliance comprising a compressor having compressor feet

Also Published As

Publication number Publication date
JP3946611B2 (ja) 2007-07-18
WO2004031666A1 (ja) 2004-04-15
KR20050054982A (ko) 2005-06-10
CN100439826C (zh) 2008-12-03
EP1557623A4 (de) 2006-04-12
CN1688854A (zh) 2005-10-26
TWI245873B (en) 2005-12-21
JP2004125353A (ja) 2004-04-22
EP1557623B1 (de) 2009-11-18
DE60330175D1 (de) 2009-12-31
TW200409893A (en) 2004-06-16

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