DK200501574A - Defrost system - Google Patents
Defrost system Download PDFInfo
- Publication number
- DK200501574A DK200501574A DK200501574A DKPA200501574A DK200501574A DK 200501574 A DK200501574 A DK 200501574A DK 200501574 A DK200501574 A DK 200501574A DK PA200501574 A DKPA200501574 A DK PA200501574A DK 200501574 A DK200501574 A DK 200501574A
- Authority
- DK
- Denmark
- Prior art keywords
- defrost
- refrigeration system
- receiver
- defrosting
- defrost system
- Prior art date
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
-
- 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
-
- 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
- F25B2400/23—Separators
-
- 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
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/02—Subcoolers
-
- 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
- F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
-
- 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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
Description
CLAIMS 1. Defrost system (2) for defrosting components (150) on which frost is formed, where the defrost system (2) comprises at least one compressor (10), which compressor (10) has a hot gas outlet (12), which is connected to condensing means (30), from where primarily liquid refrigerant is connected to pressure reduction means (50), from where the e refrigerant is led towards evaporator means (70, 210, 220), characterized in that the defrost system (2) is formed as a independent cooling system, where the condensing means (30) are transmitting heat to the defrosting components (150). 2. Defrost system according to claim 1, characterized in that the evaporator (70, 210, 220) is cooperating with external cooling means enabling defrost without deflecting the maim system (4). 3. Defrost system according to claim 1 or 2, characterized in that the defrost system (2) are operating in conjunction with a refrigeration system (4), which refrigeration system (4) is in operation, where the condensing means (30) of the defrost system is cooperating with defrosting components (150) cooled by the refrigeration system (4) for defrosting the components (150) 4. Defrost system according to claim 1 or 2, characterized in that the defrost system (2) is operating in conjunction with a refrigeration system (4), which refrigeration system (4) is in standstill, where the condensing means (30) of the defrost system (2) is cooperating with defrosting components (150) cooled by the second refrigeration system (4) for defrosting the components (150). 5. Defrost system according one of the claims 1-4, characterized in that the defrost system (2) comprises a liquid receiver (40), which receiver (40) is connected to an expansion valve (50), where a gas connection (44) from the upper part of the receiver (50) is connected to the receiver (40). 6. Defrost system according to one of the claims 1-5, characterized in that the evaporator (210, 220) of the defrost system (2) cooperates with the second refrigeration system (4) by forming the evaporator in a second heat exchanger (210) which is heated by partly or full liquefied refrigerant of the second refrigeration system (4). 7. Defrost system according to one of the claims 1-6, characterized in that the top of the receiver (40) in the defrost system (2) is used as a liquid separator, where the top of the receiver (40) is connected through a first heat exchanger (200) for liquefying the gas, which liquid gas is led back towards the receiver (40), where the first heat exchanger (200) is part of a cascade heat exchanger, which is part of the second refrigeration system (4). 8. Defrost system according to one of the claims 1-7, characterized in that the receiver (240) comprises a heat-exchanging coil (242) in the upper part, which coil (242) is connected to the liquid outlet from the receiver (42), where the coil is reducing the temperature of the gas in the top of the receiver 240). 9. Method for defrosting a refrigeration system comprising at least one refrigeration system component on which frost is formed, where defrosting is performed by heating the refrigeration system component in periods of no operation of that refrigeration system component, characterized in that defrosting is performed by an independent defrost system, which defrost system comprises at least compressing means for compressing and heating a defrost gas, which defrost gas is heating the refrigeration system components by condensing the defrost gas, which defrosting is performed in periods of no supply of refrigerant to the refrigeration system component from the refrigeration system, where the defrost system comprises a closed circuit for defrost fluid without connection to the refrigeration system.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK200501574A DK200501574A (da) | 2005-11-11 | 2005-11-11 | Defrost system |
EP06805559A EP1963764A1 (en) | 2005-11-11 | 2006-11-10 | Defrost system |
PCT/DK2006/000621 WO2007054095A1 (en) | 2005-11-11 | 2006-11-10 | Defrost system |
CNA2006800465248A CN101365917A (zh) | 2005-11-11 | 2006-11-10 | 除霜系统 |
US12/093,245 US20090223232A1 (en) | 2005-11-11 | 2006-11-10 | Defrost system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK200501574A DK200501574A (da) | 2005-11-11 | 2005-11-11 | Defrost system |
Publications (1)
Publication Number | Publication Date |
---|---|
DK200501574A true DK200501574A (da) | 2005-11-25 |
Family
ID=35517028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK200501574A DK200501574A (da) | 2005-11-11 | 2005-11-11 | Defrost system |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090223232A1 (da) |
EP (1) | EP1963764A1 (da) |
CN (1) | CN101365917A (da) |
DK (1) | DK200501574A (da) |
WO (1) | WO2007054095A1 (da) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2135017A4 (en) * | 2007-03-09 | 2010-03-10 | Carrier Corp | PREVENTING THE SOLIDIFICATION OF A REFRIGERANT FLUID |
US8789380B2 (en) * | 2009-07-20 | 2014-07-29 | Systemes Lmp Inc. | Defrost system and method for a subcritical cascade R-744 refrigeration system |
US20140260361A1 (en) * | 2013-03-15 | 2014-09-18 | Benoit RODIER | Refrigeration apparatus and method |
WO2015045354A1 (ja) * | 2013-09-27 | 2015-04-02 | パナソニックヘルスケア株式会社 | 冷凍装置 |
KR101790462B1 (ko) * | 2013-12-17 | 2017-10-25 | 가부시끼가이샤 마에가와 세이사꾸쇼 | 냉동 장치의 디프로스트 시스템 및 냉각 유닛 |
US9869492B2 (en) * | 2015-10-12 | 2018-01-16 | Heatcraft Refrigeration Products Llc | Air conditioning and refrigeration system |
US20190072299A1 (en) * | 2017-09-06 | 2019-03-07 | Heatcraft Refrigeration Products Llc | Refrigeration system with integrated air conditioning by a high pressure expansion valve |
US11137185B2 (en) * | 2019-06-04 | 2021-10-05 | Farrar Scientific Corporation | System and method of hot gas defrost control for multistage cascade refrigeration system |
US11841179B2 (en) | 2020-01-14 | 2023-12-12 | Goodman Global Group, Inc. | Heating, ventilation, and air-conditioning systems and methods |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2206115A (en) * | 1939-02-23 | 1940-07-02 | Jr Joseph W Obreiter | Air conditioning apparatus |
US3392541A (en) * | 1967-02-06 | 1968-07-16 | Larkin Coils Inc | Plural compressor reverse cycle refrigeration or heat pump system |
US3537274A (en) * | 1968-10-18 | 1970-11-03 | Alco Controls Corp | Dual evaporator refrigeration system |
FR2266123B2 (da) * | 1974-03-28 | 1978-03-31 | Chapuis Henri | |
US3978684A (en) * | 1975-04-17 | 1976-09-07 | Thermo King Corporation | Refrigeration system |
US4332137A (en) * | 1979-10-22 | 1982-06-01 | Carrier Corporation | Heat exchange apparatus and method having two refrigeration circuits |
US4308042A (en) * | 1980-04-11 | 1981-12-29 | Atlantic Richfield Company | Heat pump with freeze-up prevention |
US4336692A (en) * | 1980-04-16 | 1982-06-29 | Atlantic Richfield Company | Dual source heat pump |
JPS6470636A (en) * | 1987-09-10 | 1989-03-16 | Toshiba Corp | Air-conditioning machine |
US5056327A (en) * | 1990-02-26 | 1991-10-15 | Heatcraft, Inc. | Hot gas defrost refrigeration system |
JPH11173711A (ja) * | 1997-12-12 | 1999-07-02 | Daikin Ind Ltd | 二元冷凍装置 |
US6058727A (en) * | 1997-12-19 | 2000-05-09 | Carrier Corporation | Refrigeration system with integrated oil cooling heat exchanger |
JP3094996B2 (ja) * | 1998-09-30 | 2000-10-03 | ダイキン工業株式会社 | 二元冷凍装置 |
-
2005
- 2005-11-11 DK DK200501574A patent/DK200501574A/da not_active Application Discontinuation
-
2006
- 2006-11-10 WO PCT/DK2006/000621 patent/WO2007054095A1/en active Application Filing
- 2006-11-10 US US12/093,245 patent/US20090223232A1/en not_active Abandoned
- 2006-11-10 CN CNA2006800465248A patent/CN101365917A/zh active Pending
- 2006-11-10 EP EP06805559A patent/EP1963764A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
US20090223232A1 (en) | 2009-09-10 |
WO2007054095A1 (en) | 2007-05-18 |
CN101365917A (zh) | 2009-02-11 |
EP1963764A1 (en) | 2008-09-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AHS | Application shelved for other reasons than non-payment |