WO2010104757A3 - Defrost system and method for heat pumps - Google Patents

Defrost system and method for heat pumps Download PDF

Info

Publication number
WO2010104757A3
WO2010104757A3 PCT/US2010/026318 US2010026318W WO2010104757A3 WO 2010104757 A3 WO2010104757 A3 WO 2010104757A3 US 2010026318 W US2010026318 W US 2010026318W WO 2010104757 A3 WO2010104757 A3 WO 2010104757A3
Authority
WO
WIPO (PCT)
Prior art keywords
defrost
outdoor coil
heat pumps
defrost system
discharge
Prior art date
Application number
PCT/US2010/026318
Other languages
French (fr)
Other versions
WO2010104757A2 (en
Inventor
David N. Shaw
Original Assignee
Hallowell International, Llc
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 Hallowell International, Llc filed Critical Hallowell International, Llc
Priority to CA2754201A priority Critical patent/CA2754201A1/en
Priority to EP10751214A priority patent/EP2406563A2/en
Publication of WO2010104757A2 publication Critical patent/WO2010104757A2/en
Publication of WO2010104757A3 publication Critical patent/WO2010104757A3/en

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
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F25B47/022—Defrosting cycles hot gas defrosting
    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F25D21/02—Detecting the presence of frost or condensate
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
    • 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
    • F25B2400/01—Heaters

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)
  • Air Conditioning Control Device (AREA)
  • Defrosting Systems (AREA)

Abstract

A system and method for defrosting an air source heat pump are presented. A defrost conduit extends from the discharge from a system compressor to the outdoor coil. The defrost conduit includes a normally closed defrost valve. When the need for defrost exists, the defrost valve is opened, and warm refrigerant is delivered from the compressor discharge to the outdoor coil to effect defrost of the outdoor coil.
PCT/US2010/026318 2009-03-10 2010-03-05 Defrost system and method for heat pumps WO2010104757A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA2754201A CA2754201A1 (en) 2009-03-10 2010-03-05 Defrost system and method for heat pumps
EP10751214A EP2406563A2 (en) 2009-03-10 2010-03-05 Defrost system and method for heat pumps

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/401,136 2009-03-10
US12/401,136 US20100229575A1 (en) 2009-03-10 2009-03-10 Defrost system and method for heat pumps

Publications (2)

Publication Number Publication Date
WO2010104757A2 WO2010104757A2 (en) 2010-09-16
WO2010104757A3 true WO2010104757A3 (en) 2011-01-06

Family

ID=42729027

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2010/026318 WO2010104757A2 (en) 2009-03-10 2010-03-05 Defrost system and method for heat pumps

Country Status (4)

Country Link
US (1) US20100229575A1 (en)
EP (1) EP2406563A2 (en)
CA (1) CA2754201A1 (en)
WO (1) WO2010104757A2 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3779335B1 (en) 2010-02-23 2023-04-26 LG Electronics Inc. Refrigerator
US10274210B2 (en) 2010-08-27 2019-04-30 Nortek Air Solutions Canada, Inc. Heat pump humidifier and dehumidifier system and method
KR101712213B1 (en) * 2011-04-22 2017-03-03 엘지전자 주식회사 Multi type air conditiner and method of controlling the same
CN102226608B (en) * 2011-04-27 2013-03-27 海尔集团公司 Air conditioner defrosting system, air conditioner and air conditioner defrosting method
ITBS20110084A1 (en) * 2011-06-10 2012-12-11 Bmb Di Begarelli Bruno & C Sas DEFROSTING SYSTEM OF A REINFORCED HEAT PUMP MACHINE THROUGH REUSE OF HEAT PRODUCED BY THE SAME MACHINE
WO2013114384A1 (en) * 2011-12-26 2013-08-08 Robert Bosch Engineering And Business Solutions Limited An accumulator for a refrigerant recovery and recharge device
US10041721B2 (en) * 2012-11-30 2018-08-07 Lennox Industries Inc. Heat pump comprising primary defrost operation and secondary defrost operation and method of operating heat pump
US9772124B2 (en) 2013-03-13 2017-09-26 Nortek Air Solutions Canada, Inc. Heat pump defrosting system and method
JP6688555B2 (en) * 2013-11-25 2020-04-28 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． Air conditioner
US10391835B2 (en) * 2015-05-15 2019-08-27 Ford Global Technologies, Llc System and method for de-icing a heat pump
US9857975B2 (en) 2015-06-26 2018-01-02 International Business Machines Corporation Non-volatile memory drive partitions within microcontrollers
GB2546545A (en) * 2016-01-21 2017-07-26 Pollock Geoffrey The planet saver

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4625524A (en) * 1984-12-07 1986-12-02 Hitachi, Ltd. Air-cooled heat pump type refrigerating apparatus
JPH06331202A (en) * 1993-05-21 1994-11-29 Mitsubishi Heavy Ind Ltd Heat pump type air conditioner
JP2001108256A (en) * 1999-10-07 2001-04-20 Daikin Ind Ltd Hot water supplying device
KR20070102047A (en) * 2006-04-13 2007-10-18 주식회사 코벡엔지니어링 High speed defrosting heat pump

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2058590A (en) * 1934-07-10 1936-10-27 John A Jefferson Combination shut-off and check valve
US2523826A (en) * 1944-10-21 1950-09-26 Hubbell Corp Back pressure regulator valve
KR0152286B1 (en) * 1992-10-22 1998-11-02 윤종용 Cooling/heating airconditioner and its control method
US5551255A (en) * 1994-09-27 1996-09-03 The United States Of America As Represented By The Secretary Of Commerce Accumulator distillation insert for zeotropic refrigerant mixtures
CN1250926C (en) * 2001-07-02 2006-04-12 三洋电机株式会社 Heat pump
US6467284B1 (en) * 2001-09-17 2002-10-22 Ut-Battelle, Llc Frostless heat pump having thermal expansion valves
US7004246B2 (en) * 2002-06-26 2006-02-28 York International Corporation Air-to-air heat pump defrost bypass loop
KR100499485B1 (en) * 2002-11-23 2005-07-07 엘지전자 주식회사 accumulator of heat pump system with at least two compressors
US7312713B2 (en) * 2004-12-17 2007-12-25 Research Foundation Of The City University Of New York Methods and systems for detection of ice formation on surfaces

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4625524A (en) * 1984-12-07 1986-12-02 Hitachi, Ltd. Air-cooled heat pump type refrigerating apparatus
JPH06331202A (en) * 1993-05-21 1994-11-29 Mitsubishi Heavy Ind Ltd Heat pump type air conditioner
JP2001108256A (en) * 1999-10-07 2001-04-20 Daikin Ind Ltd Hot water supplying device
KR20070102047A (en) * 2006-04-13 2007-10-18 주식회사 코벡엔지니어링 High speed defrosting heat pump

Also Published As

Publication number Publication date
CA2754201A1 (en) 2010-09-16
EP2406563A2 (en) 2012-01-18
US20100229575A1 (en) 2010-09-16
WO2010104757A2 (en) 2010-09-16

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