EP1793186A3 - Refrigerator - Google Patents

Refrigerator Download PDF

Info

Publication number
EP1793186A3
EP1793186A3 EP07001116A EP07001116A EP1793186A3 EP 1793186 A3 EP1793186 A3 EP 1793186A3 EP 07001116 A EP07001116 A EP 07001116A EP 07001116 A EP07001116 A EP 07001116A EP 1793186 A3 EP1793186 A3 EP 1793186A3
Authority
EP
European Patent Office
Prior art keywords
tube
glass
heater
refrigerant
combustible
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
EP07001116A
Other languages
German (de)
French (fr)
Other versions
EP1793186A2 (en
EP1793186B1 (en
Inventor
Masahiro Nakayama
Yuji Kishinaka
Kiyonori Yamamoto
Akira Yokoe
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.)
Panasonic Corp
Original Assignee
Panasonic 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 Panasonic Corp filed Critical Panasonic Corp
Publication of EP1793186A2 publication Critical patent/EP1793186A2/en
Publication of EP1793186A3 publication Critical patent/EP1793186A3/en
Application granted granted Critical
Publication of EP1793186B1 publication Critical patent/EP1793186B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F25D21/08—Removing frost by electric heating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/44—Heating elements having the shape of rods or tubes non-flexible heating conductor arranged within rods or tubes of insulating material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
    • 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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/14—Collecting or removing condensed and defrost water; Drip trays
    • 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
    • F25D2400/04—Refrigerators with a horizontal mullion
    • 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

Landscapes

  • 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)
  • Defrosting Systems (AREA)

Abstract

In a refrigerator employing a combustible refrigerant, a plurality of glass-tube heaters (19a,19b) for defrosting is disposed close to an evaporator (10) of a combustible-refrigerant-sealed refrigeration cycle. By controlling the application of an electric current or voltage to the glass-tube heater (19a,19b), the surface temperature of the heater can be kept below the ignition temperature of the combustible refrigerant. Furthermore, following structures are effective in decreasing the surface temperature of the heater (19) - i) making contact the glass-tube heater (115) to fins (108) of the evaporator, ii) forming the glass-tube heater (139) into a tube-in-tube structure and disposing a sealing member (142) at an end of the glass tube (140,141). Such structured refrigerator prevents the combustible refrigerant from catching fire even if defrosting is performed in an environment where leakage of the refrigerant occurs, and improves poor refrigeration due to residual frost.
EP07001116.8A 2001-03-13 2002-03-13 Refrigerator Expired - Lifetime EP1793186B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001069976A JP2002267331A (en) 2001-03-13 2001-03-13 Refrigerator
EP02705107A EP1369650B1 (en) 2001-03-13 2002-03-13 Refrigerator

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP02705107.7 Division 2002-03-13
EP02705107A Division EP1369650B1 (en) 2001-03-13 2002-03-13 Refrigerator

Publications (3)

Publication Number Publication Date
EP1793186A2 EP1793186A2 (en) 2007-06-06
EP1793186A3 true EP1793186A3 (en) 2012-06-13
EP1793186B1 EP1793186B1 (en) 2015-09-09

Family

ID=18927930

Family Applications (2)

Application Number Title Priority Date Filing Date
EP02705107A Expired - Lifetime EP1369650B1 (en) 2001-03-13 2002-03-13 Refrigerator
EP07001116.8A Expired - Lifetime EP1793186B1 (en) 2001-03-13 2002-03-13 Refrigerator

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP02705107A Expired - Lifetime EP1369650B1 (en) 2001-03-13 2002-03-13 Refrigerator

Country Status (8)

Country Link
EP (2) EP1369650B1 (en)
JP (1) JP2002267331A (en)
KR (1) KR100600185B1 (en)
CN (3) CN100513949C (en)
DE (1) DE60232715D1 (en)
HK (1) HK1075696A1 (en)
TW (1) TW539838B (en)
WO (1) WO2002073106A1 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004197964A (en) * 2002-12-16 2004-07-15 Matsushita Refrig Co Ltd Defrosting heater
JP3580307B2 (en) * 2003-02-20 2004-10-20 松下電器産業株式会社 Defrost heater
JP3552715B1 (en) * 2003-10-23 2004-08-11 松下電器産業株式会社 Defrost heater
JP2005134030A (en) * 2003-10-30 2005-05-26 Matsushita Electric Ind Co Ltd Refrigerator
JP3944498B2 (en) * 2004-08-25 2007-07-11 日立アプライアンス株式会社 refrigerator
JP2006343089A (en) * 2005-05-12 2006-12-21 Matsushita Electric Ind Co Ltd Cooler with defroster, and refrigerator having cooler with defroster
WO2010092624A1 (en) * 2009-02-12 2010-08-19 パナソニック株式会社 Refrigerator
JP5025689B2 (en) * 2009-06-26 2012-09-12 三菱電機株式会社 refrigerator
DE102010003833A1 (en) * 2010-04-09 2011-10-13 BSH Bosch und Siemens Hausgeräte GmbH Defrost heater for a refrigeration device
JP5868034B2 (en) * 2011-06-07 2016-02-24 株式会社東芝 refrigerator
JP6026966B2 (en) * 2013-06-28 2016-11-16 アクア株式会社 refrigerator
JP5752199B2 (en) * 2013-09-13 2015-07-22 株式会社Uacj Refrigerator refrigerator heat exchanger
CN103851851B (en) * 2013-11-07 2016-09-07 海信（山东）冰箱有限公司 A kind of wind cooling refrigerator with humidification function and control method thereof
KR101728388B1 (en) * 2014-12-15 2017-04-19 엘지전자 주식회사 Refrigerator with defrosting unit
CN106247742B (en) * 2016-08-12 2018-09-18 长虹美菱股份有限公司 A kind of refrigerator freezing fan defrosting device and its control method
KR102204008B1 (en) * 2016-11-30 2021-01-18 엘지전자 주식회사 Refrigerator
WO2020093114A1 (en) * 2018-11-07 2020-05-14 Da Gragnano Bruno Automatic method and system for saving energy in accordance with ambient conditions and other technical parameters for use in systems with glass-heating resistors for commercial display refrigerators or freezers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277663A (en) * 1993-04-28 1994-11-02 Mitsubishi Electric Corp Defrosting heater in refrigerator
JPH11257831A (en) * 1998-03-13 1999-09-24 Toshiba Corp Refrigerator

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091637A (en) * 1976-10-13 1978-05-30 Mcquay-Perfex, Inc. Electric defrost heater for fin and tube refrigeration heat exchanger
JPS5828908B2 (en) * 1978-11-24 1983-06-18 株式会社東芝 refrigerator
JPS589911B2 (en) * 1978-11-29 1983-02-23 株式会社日立製作所 Evaporator for refrigerator
JPS597383U (en) * 1982-07-05 1984-01-18 三菱電機株式会社 refrigerator
JPS5916971U (en) * 1982-07-22 1984-02-01 三菱電機株式会社 refrigerator
JPH0625813Y2 (en) * 1989-06-14 1994-07-06 サンデン株式会社 Defrost heater mounting structure for cooler
JPH0427372U (en) * 1990-06-26 1992-03-04
JP3404299B2 (en) * 1998-10-20 2003-05-06 松下冷機株式会社 refrigerator
JP4310825B2 (en) * 1998-10-20 2009-08-12 パナソニック株式会社 refrigerator
JP3507724B2 (en) * 1999-03-18 2004-03-15 松下冷機株式会社 refrigerator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277663A (en) * 1993-04-28 1994-11-02 Mitsubishi Electric Corp Defrosting heater in refrigerator
JPH11257831A (en) * 1998-03-13 1999-09-24 Toshiba Corp Refrigerator

Also Published As

Publication number Publication date
WO2002073106A1 (en) 2002-09-19
JP2002267331A (en) 2002-09-18
CN1945177A (en) 2007-04-11
KR100600185B1 (en) 2006-07-12
DE60232715D1 (en) 2009-08-06
CN100439831C (en) 2008-12-03
TW539838B (en) 2003-07-01
EP1793186A2 (en) 2007-06-06
EP1369650B1 (en) 2009-06-24
HK1075696A1 (en) 2005-12-23
CN1940419A (en) 2007-04-04
EP1369650A1 (en) 2003-12-10
CN100513949C (en) 2009-07-15
EP1793186B1 (en) 2015-09-09
CN1620585A (en) 2005-05-25
EP1369650A4 (en) 2006-04-26
KR20030094279A (en) 2003-12-11
CN1327177C (en) 2007-07-18

Similar Documents

Publication Publication Date Title
EP1793186A3 (en) Refrigerator
CA2120181C (en) Multi-compartment refrigerator with system for minimizing condensation
US7308804B2 (en) Defrosting heater, and refrigerator having the defrosting heater
CN208012210U (en) Condenser system with automatic detection and automatic de-icing function
CN201854526U (en) Electrical box for flammable refrigerant air-conditioning unit and application of electrical box
CN101178281A (en) Control system of non-frost refrigerator
JP2004044899A (en) Defrosting heater for household refrigerator
JP2005226865A (en) Refrigerator
CN100400992C (en) Defrosting heater
JP3955412B2 (en) refrigerator
JP4476522B2 (en) Evaporator with defrost heater and refrigerator using the evaporator
JP2007163065A (en) Refrigerator
JP3404299B2 (en) refrigerator
CN111707026A (en) Method for detecting frost layer of finned evaporator by adopting infrared rays, and defrosting device and method
JP2001091141A (en) Refrigerator
CN1754075A (en) Defrosting heater and method of manufacturing the same
TR200302237T1 (en) Starting device for fluorescent tube with cooling area inside
CN205388393U (en) Refrigerator defrosting system
CN216080579U (en) Food freezing bin defroster
CN218915527U (en) Defrosting heater and refrigerator
CN209893672U (en) Refrigerating system and refrigerator with same
CN212157755U (en) Defrosting device of air-cooled frostless refrigerator
KR100479609B1 (en) Heat pump with defroster
JP2006078094A (en) Refrigerator
KR20160109089A (en) Electric heater for defrosting of freezing unit

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20070124

AC Divisional application: reference to earlier application

Ref document number: 1369650

Country of ref document: EP

Kind code of ref document: P

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PANASONIC CORPORATION

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RIC1 Information provided on ipc code assigned before grant

Ipc: H05B 3/50 20060101ALI20120509BHEP

Ipc: F25D 21/08 20060101AFI20120509BHEP

Ipc: H05B 3/44 20060101ALI20120509BHEP

AKX Designation fees paid

Designated state(s): DE FR GB IT SE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 60247465

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: F25D0021080000

Ipc: F25D0021140000

RIC1 Information provided on ipc code assigned before grant

Ipc: F25D 21/14 20060101AFI20150130BHEP

Ipc: H05B 3/50 20060101ALI20150130BHEP

Ipc: H05B 3/44 20060101ALI20150130BHEP

Ipc: F25D 21/08 20060101ALI20150130BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20150327

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AC Divisional application: reference to earlier application

Ref document number: 1369650

Country of ref document: EP

Kind code of ref document: P

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT SE

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 60247465

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 60247465

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20160330

Year of fee payment: 15

26N No opposition filed

Effective date: 20160610

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20160313

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20161130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160331

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160313

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60247465

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171003