IN2012DN02774A - - Google Patents
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- Publication number
- IN2012DN02774A IN2012DN02774A IN2774DEN2012A IN2012DN02774A IN 2012DN02774 A IN2012DN02774 A IN 2012DN02774A IN 2774DEN2012 A IN2774DEN2012 A IN 2774DEN2012A IN 2012DN02774 A IN2012DN02774 A IN 2012DN02774A
- Authority
- IN
- India
- Prior art keywords
- heat exchanger
- compressor
- expansion device
- refrigerant
- downstream
- Prior art date
Links
- 239000003507 refrigerant Substances 0.000 abstract 3
- 230000001052 transient effect Effects 0.000 abstract 1
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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
- F25B2341/06—Details of flow restrictors or expansion valves
- F25B2341/068—Expansion valves combined with a sensor
- F25B2341/0681—Expansion valves combined with a sensor the sensor is heated
-
- 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
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0411—Refrigeration circuit bypassing means for the expansion valve or capillary tube
-
- 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
- F25B2400/07—Details of compressors or related parts
- F25B2400/075—Details of compressors or related parts with parallel compressors
-
- 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
- F25B2500/07—Exceeding a certain pressure value in a refrigeration component or 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/26—Problems to be solved characterised by the startup of the refrigeration 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0253—Compressor control by controlling speed with variable speed
-
- 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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/026—Compressor control by controlling unloaders
-
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air Conditioning Control Device (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US25758609P | 2009-11-03 | 2009-11-03 | |
| PCT/US2010/052576 WO2011056371A2 (en) | 2009-11-03 | 2010-10-14 | Pressure spike reduction for refrigerant systems incorporating a microchannel heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IN2012DN02774A true IN2012DN02774A (th) | 2015-09-18 |
Family
ID=43970630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IN2774DEN2012 IN2012DN02774A (th) | 2009-11-03 | 2010-10-14 |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US10107535B2 (th) |
| EP (1) | EP2496897B1 (th) |
| CN (1) | CN102575890B (th) |
| ES (1) | ES2764787T3 (th) |
| IN (1) | IN2012DN02774A (th) |
| WO (1) | WO2011056371A2 (th) |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9038404B2 (en) * | 2011-04-19 | 2015-05-26 | Liebert Corporation | High efficiency cooling system |
| US8881541B2 (en) | 2011-04-19 | 2014-11-11 | Liebert Corporation | Cooling system with tandem compressors and electronic expansion valve control |
| US9845981B2 (en) | 2011-04-19 | 2017-12-19 | Liebert Corporation | Load estimator for control of vapor compression cooling system with pumped refrigerant economization |
| US10690386B2 (en) * | 2012-07-20 | 2020-06-23 | Lennox Industries Inc. | Controlling metering devices |
| US8931288B2 (en) * | 2012-10-19 | 2015-01-13 | Lennox Industries Inc. | Pressure regulation of an air conditioner |
| US9353980B2 (en) * | 2013-05-02 | 2016-05-31 | Emerson Climate Technologies, Inc. | Climate-control system having multiple compressors |
| US10077929B2 (en) * | 2013-05-08 | 2018-09-18 | Carrier Corporation | Movement of electronic expansion valve |
| US20150052914A1 (en) * | 2013-08-22 | 2015-02-26 | Carrier Corporation | System and Method for Using an Electronic Expansion Valve to Control a Discharge Pressure in a Multi-Purpose HVAC System |
| US9989286B2 (en) * | 2013-12-17 | 2018-06-05 | Lennox Industries Inc. | Compressor operation management in air conditioners |
| US9546807B2 (en) * | 2013-12-17 | 2017-01-17 | Lennox Industries Inc. | Managing high pressure events in air conditioners |
| US9759468B2 (en) * | 2014-03-21 | 2017-09-12 | Lennox Industries Inc. | System for controlling operation of an HVAC system having tandem compressors |
| US9581371B2 (en) | 2014-03-21 | 2017-02-28 | Lennox Industries Inc. | System for operating an HVAC system having tandem compressors |
| US9884394B2 (en) | 2014-05-19 | 2018-02-06 | Lennox Industries Inc. | Solenoid control methods for dual flow HVAC systems |
| US20160146477A1 (en) * | 2014-11-25 | 2016-05-26 | Lennox Industries Inc. | Hvac systems and methods for reheat operation |
| DK3332181T3 (da) | 2015-08-03 | 2021-10-25 | Carrier Corp | Kølesystem og driftsfremgangsmåde |
| CN105466063A (zh) * | 2015-12-16 | 2016-04-06 | 珠海格力电器股份有限公司 | 一种热泵系统 |
| DE102016005958A1 (de) * | 2016-05-13 | 2017-11-16 | Liebherr-Transportation Systems Gmbh & Co. Kg | Kühlvorrichtung |
| US10823444B2 (en) * | 2017-03-31 | 2020-11-03 | Johnson Controls Technology Company | Pressure control device |
| US10563890B2 (en) | 2017-05-26 | 2020-02-18 | Denso International America, Inc. | Modulator for sub-cool condenser |
| CN107120858A (zh) * | 2017-07-06 | 2017-09-01 | 王道均 | 智能三源无霜制冷系统 |
| US11585608B2 (en) | 2018-02-05 | 2023-02-21 | Emerson Climate Technologies, Inc. | Climate-control system having thermal storage tank |
| US11149971B2 (en) | 2018-02-23 | 2021-10-19 | Emerson Climate Technologies, Inc. | Climate-control system with thermal storage device |
| CN112236629B (zh) | 2018-05-15 | 2022-03-01 | 艾默生环境优化技术有限公司 | 具有接地环路的气温控制系统及方法 |
| US11346583B2 (en) | 2018-06-27 | 2022-05-31 | Emerson Climate Technologies, Inc. | Climate-control system having vapor-injection compressors |
| US10935290B2 (en) * | 2019-02-27 | 2021-03-02 | Rheem Manufacturing Company | Pressure spike prevention in heat pump systems |
| ES2946066T3 (es) * | 2020-01-31 | 2023-07-12 | Carrier Corp | Sistema de refrigeración |
| DE102020105865B4 (de) | 2020-03-04 | 2024-08-14 | Audi Aktiengesellschaft | Kälteanlage für ein Fahrzeug |
| US11131491B1 (en) | 2020-08-07 | 2021-09-28 | Emerson Climate Technologies, Inc. | Systems and methods for multi-stage operation of a compressor |
| US11906188B2 (en) | 2022-03-11 | 2024-02-20 | Johnson Controls Tyco IP Holdings LLP | Energy efficient heat pump systems and methods |
| US20250060138A1 (en) * | 2023-08-14 | 2025-02-20 | Rheem Manufacturing Company | Heat Pump with Multiple Mini-Compressors |
Family Cites Families (42)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4879879A (en) | 1988-10-05 | 1989-11-14 | Joseph Marsala | Apparatus for controlling a thermostatic expansion valve |
| JPH02290471A (ja) * | 1989-02-10 | 1990-11-30 | Mitsubishi Electric Corp | 空気調和機 |
| US5095712A (en) * | 1991-05-03 | 1992-03-17 | Carrier Corporation | Economizer control with variable capacity |
| JPH05106922A (ja) * | 1991-10-18 | 1993-04-27 | Hitachi Ltd | 冷凍装置の制御方式 |
| US5806324A (en) * | 1995-10-30 | 1998-09-15 | Shaw; David N. | Variable capacity vapor compression cooling system |
| US5806327A (en) | 1996-06-28 | 1998-09-15 | Lord; Richard G. | Compressor capacity reduction |
| JP3890713B2 (ja) * | 1997-11-27 | 2007-03-07 | 株式会社デンソー | 冷凍サイクル装置 |
| US6036432A (en) | 1998-07-09 | 2000-03-14 | Carrier Corporation | Method and apparatus for protecting centrifugal compressors from rotating stall vibrations |
| US6286322B1 (en) | 1998-07-31 | 2001-09-11 | Ardco, Inc. | Hot gas defrost refrigeration system |
| JP3680619B2 (ja) | 1999-03-10 | 2005-08-10 | 株式会社日立製作所 | 冷凍装置 |
| US6196012B1 (en) | 1999-03-26 | 2001-03-06 | Carrier Corporation | Generator power management |
| DE19935731A1 (de) * | 1999-07-29 | 2001-02-15 | Daimler Chrysler Ag | Verfahren zum Betreiben einer unter- und transkritisch betriebenen Fahrzeugkälteanlage |
| US6553778B2 (en) * | 2001-01-16 | 2003-04-29 | Emerson Electric Co. | Multi-stage refrigeration system |
| US20020108388A1 (en) * | 2001-02-15 | 2002-08-15 | Carrier Corporation | Non-synchronous generator design for electrically powered trailer refrigeration unit |
| JP2002243246A (ja) * | 2001-02-15 | 2002-08-28 | Sanden Corp | 空調装置 |
| US6601397B2 (en) | 2001-03-16 | 2003-08-05 | Copeland Corporation | Digital scroll condensing unit controller |
| JPWO2002095302A1 (ja) * | 2001-05-23 | 2004-09-09 | 松下電器産業株式会社 | 冷凍サイクル装置 |
| US20030019620A1 (en) | 2001-07-30 | 2003-01-30 | Pineo Gregory Merle | Plug bypass valves and heat exchangers |
| US6467284B1 (en) | 2001-09-17 | 2002-10-22 | Ut-Battelle, Llc | Frostless heat pump having thermal expansion valves |
| TWI301188B (en) * | 2002-08-30 | 2008-09-21 | Sanyo Electric Co | Refrigeant cycling device and compressor using the same |
| US20060249279A1 (en) * | 2002-11-05 | 2006-11-09 | Lalit Chordia | Method and apparatus for electronics cooling |
| WO2004044503A2 (en) | 2002-11-11 | 2004-05-27 | Vortex Aircon | Refrigeration system with bypass subcooling and component size de-optimization |
| EP1452810A1 (en) * | 2003-02-28 | 2004-09-01 | Delphi Technologies, Inc. | Method for controlling the head pressure in a transcritical refrigeration system |
| JP4311983B2 (ja) * | 2003-05-30 | 2009-08-12 | 三洋電機株式会社 | 冷却装置 |
| FR2856782B1 (fr) * | 2003-06-30 | 2005-09-23 | Valeo Climatisation | Installation de climatisation de vehicule fonctionnant selon un cycle supercritique |
| US6848268B1 (en) * | 2003-11-20 | 2005-02-01 | Modine Manufacturing Company | CO2 cooling system |
| US7261151B2 (en) | 2003-11-20 | 2007-08-28 | Modine Manufacturing Company | Suction line heat exchanger for CO2 cooling system |
| US6988538B2 (en) * | 2004-01-22 | 2006-01-24 | Hussmann Corporation | Microchannel condenser assembly |
| DE102004005175A1 (de) * | 2004-02-02 | 2005-08-18 | Behr Gmbh & Co. Kg | Verfahren und Vorrichtung zur Druckregelung in einem Kältemittelkreislauf |
| KR101116208B1 (ko) | 2004-05-17 | 2012-03-06 | 삼성전자주식회사 | 압축기의 제어 장치 및 방법 |
| ATE453841T1 (de) | 2004-09-30 | 2010-01-15 | Danfoss As | Modellvorhersage-gesteuertes kühlsystem |
| JP2006306320A (ja) * | 2005-04-28 | 2006-11-09 | Calsonic Kansei Corp | 車両用空調装置 |
| EP1963765A4 (en) | 2005-12-21 | 2011-08-24 | Carrier Corp | MULTI-CIRCLE AIR CONDITIONING SYSTEM WITH ADJUSTABLE PERFORMANCE |
| FR2895787B1 (fr) * | 2006-01-04 | 2013-04-26 | Valeo Systemes Thermiques | Installation de climatisation parcourue par un fluide supercritique |
| SE529598C2 (sv) * | 2006-02-01 | 2007-10-02 | Svenning Ericsson | Flödeskontroll av köldmedia |
| US20090038322A1 (en) | 2006-03-30 | 2009-02-12 | Carrier Corporation | Transport refrigeration unit |
| DE102006021327A1 (de) * | 2006-05-05 | 2007-11-08 | Otto Egelhof Gmbh & Co. Kg | Verfahren zur Steuerung eines Expansionsventils sowie Expansionsventil, insbesondere für mit CO2Kältemittel betriebene Fahrzeugklimaanlagen |
| WO2007139554A1 (en) | 2006-06-01 | 2007-12-06 | Carrier Corporation | System and method for controlled expansion valve adjustment |
| AU2006344429A1 (en) | 2006-06-02 | 2007-12-13 | Carrier Corporation | Slide valve actuation for overpressure safety |
| JP2008082637A (ja) * | 2006-09-28 | 2008-04-10 | Denso Corp | 超臨界冷凍サイクル |
| GB2452246B (en) | 2007-07-19 | 2012-01-11 | Ford Global Tech Llc | A micro-hybrid motor vehicle |
| US8109110B2 (en) | 2007-10-11 | 2012-02-07 | Earth To Air Systems, Llc | Advanced DX system design improvements |
-
2010
- 2010-10-14 IN IN2774DEN2012 patent/IN2012DN02774A/en unknown
- 2010-10-14 ES ES10771276T patent/ES2764787T3/es active Active
- 2010-10-14 EP EP10771276.2A patent/EP2496897B1/en active Active
- 2010-10-14 WO PCT/US2010/052576 patent/WO2011056371A2/en not_active Ceased
- 2010-10-14 US US13/395,548 patent/US10107535B2/en active Active
- 2010-10-14 CN CN201080049504.2A patent/CN102575890B/zh active Active
-
2018
- 2018-08-31 US US16/118,511 patent/US20180372384A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| HK1172676A1 (zh) | 2013-04-26 |
| ES2764787T3 (es) | 2020-06-04 |
| US20120167602A1 (en) | 2012-07-05 |
| EP2496897A2 (en) | 2012-09-12 |
| US20180372384A1 (en) | 2018-12-27 |
| CN102575890A (zh) | 2012-07-11 |
| WO2011056371A3 (en) | 2011-08-18 |
| WO2011056371A2 (en) | 2011-05-12 |
| EP2496897B1 (en) | 2020-01-01 |
| US10107535B2 (en) | 2018-10-23 |
| CN102575890B (zh) | 2015-08-26 |
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