EP1878985B1 - Air conditioning system and method of controlling the same - Google Patents

Air conditioning system and method of controlling the same Download PDF

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Publication number
EP1878985B1
EP1878985B1 EP07112181.8A EP07112181A EP1878985B1 EP 1878985 B1 EP1878985 B1 EP 1878985B1 EP 07112181 A EP07112181 A EP 07112181A EP 1878985 B1 EP1878985 B1 EP 1878985B1
Authority
EP
European Patent Office
Prior art keywords
unit
refrigerant
heat exchange
air conditioning
conditioning system
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.)
Not-in-force
Application number
EP07112181.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1878985A3 (en
EP1878985A2 (en
Inventor
Won Hee Lee
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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP1878985A2 publication Critical patent/EP1878985A2/en
Publication of EP1878985A3 publication Critical patent/EP1878985A3/en
Application granted granted Critical
Publication of EP1878985B1 publication Critical patent/EP1878985B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • F25B1/00—Compression machines, plants or systems with non-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
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00—Heat pumps
    • F25B30/02—Heat pumps of the compression type
    • 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
    • F25B2400/0403—Refrigeration circuit bypassing means for the condenser
    • 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

Definitions

  • the present invention relates to an air conditioning system according to the preamble of claim 1.
  • Such an air conditioning system is known from document EP-A-1 645 817 . More particularly, the present invention relates to an air conditioning system that can perform a defrosting mode while continuously performing a heating mode.
  • an air conditioner is a system that is used to control a temperature of an indoor space.
  • the air conditioner performs a cooling mode or a heating mode depending on a circulation direction of a refrigerant.
  • frost is formed on an outdoor heat exchanger when a temperature of an outdoor side is reduced to be less than a predetermined temperature during the heating mode operation. This causes the deterioration of the performance of the outdoor heat exchanger.
  • the conventional air conditioner has however the following problems.
  • the conventional air conditioner In order to perform the defrosting mode, the conventional air conditioner must be changed into a cooling cycle after a heating cycle is stopped. Therefore, the air conditioner cannot keep operating with the heating cycle. In addition, since cool air is discharged into an indoor space during the defrosting mode, a user may feel discomfort.
  • the indoor heat exchanger since an indoor heat exchanger is cooled during the defrosting mode, the indoor heat exchanger must be reheated whenever the heating mode starts again after the defrosting mode is finished. This causes increase of the electric power consumption.
  • the present invention is directed to an air conditioning system and a method of controlling the same that substantially obviate one or more problems due to limitations and disadvantages of the related art.
  • An object of the present invention is to provide an air conditioning system that can perform a defrosting mode for an outdoor heat exchanger while keeping performing a heating mode and a method of controlling the air conditioning system.
  • Another object of the present invention is to provide an air conditioning system in which there is no need to reheat an indoor heat exchanger even after the defrosting of an outdoor heat exchange is completed and a method of controlling the air conditioning system.
  • Still another object of the present invention is to provide an air conditioning system that can prolong a defrosting mode performing period for an outdoor heat exchanger and a method of controlling the air conditioning system.
  • an air conditioning system including: a compression unit for compressing a refrigerant; an indoor heat exchange unit connected to the compression unit; an expansion unit connected to the indoor heat exchange unit; an outdoor heat exchange unit disposed on a refrigerant tube between the expansion unit and an inlet side of the compression unit; a bypass tube branched off from an outlet side of the compression unit and connecting an outlet side of the expansion unit to an inlet side of the compression unit in a heating mode; and a valve disposed on the bypass tube.
  • an air conditioning system including: a compression unit for compressing a refrigerant; a conversion unit for converting the refrigerant discharged from the compression unit; an indoor heat exchange unit connected to the conversion unit; an expansion unit connected to the indoor heat exchange unit; an outdoor heat exchange unit disposed on a refrigerant tube between the expansion unit and the conversion unit; a bypass tube branched off from a refrigerant tube between an outlet side of the compression unit and the conversion unit and connecting an outlet side of the expansion unit to an inlet side of the compression unit in a heating mode; and a valve disposed on the bypass tube.
  • an air conditioning system including: a compression unit having at least two compressors; an indoor heat exchange unit connected to the compression unit; an expansion unit connected to the indoor heat exchange unit; an outdoor heat exchange unit disposed on a refrigerant tube between the expansion unit and an inlet side of the compression unit; a bypass tube branched off from an outlet side refrigerant tube of at least one of the compressors of the compression unit and connecting an outlet side of the expansion unit to an inlet side of the compression unit in a heating mode; and a valve disposed on the bypass tube.
  • the bypass tube may be connected to an inlet side refrigerant tube of the outdoor heat exchange unit in the heating mode.
  • a pressure regulating unit for regulating pressure of the refrigerant may be disposed on the bypass tube.
  • the bypass tube may be connected to a refrigerant tube between the inlet side of the compression unit and the outdoor heat exchange unit.
  • a valve may be installed on a refrigerant tube between a branched portion of the bypass tube and the conversion unit.
  • a method of controlling an air conditioning system including: starting a heating mode; determining if an outdoor heat exchange unit reaches a preset defrosting condition; and allowing, when it is determined that the outdoor heat exchange unit reaches the preset defrosting condition, a portion of a refrigerant discharged from a compression unit to be directed to an inlet side of the outdoor heat exchange unit by opening a valve.
  • a temperature of the outdoor heat exchange unit is equal to or less than a preset reference temperature, it may be determined that the outdoor heat exchange unit reaches the preset defrosting condition.
  • FIG. 1 is a circuit diagram of an air conditioning system according to a first embodiment of the present invention
  • FIG. 2 is a flowchart illustrating a method of controlling the air conditioning system of FIG. 1 ;
  • FIG. 3 is a P-h graph of the air conditioning system of FIG. 1 ;
  • FIG. 4 is a circuit diagram of an air conditioning system according to a second embodiment of the present invention.
  • FIG. 5 is a P-h graph of the air conditioning system of FIG. 3 ;
  • FIG. 6 is a circuit diagram of an air conditioning system according to a third embodiment of the present invention.
  • FIG. 1 is a circuit diagram of an air conditioning system according to a first embodiment of the present invention
  • FIG. 2 is a flowchart illustrating a method of controlling the air conditioning system of FIG. 1
  • FIG. 3 is a P-h graph of the air conditioning system of FIG. 1 .
  • the air conditioning system includes a compression unit 10.
  • the compression unit 10 includes a main compressor 11 and a sub-compressor 12.
  • the main compressor 12 operates in all of modes and the sub-compressor 12 operates if required.
  • a check valve 15 for preventing a refrigerant discharged from the compression unit 10 from reversely flowing is disposed on an outlet side refrigerant tube 111.
  • a conversion unit 20 is connected to the outlet side refrigerant tube 111 of the compression unit 10.
  • a 4-way valve may be used as the conversion unit 20.
  • the conversion unit 20 controls a circulation direction of the refrigerant.
  • An indoor heat exchange unit 30 is connected to the conversion unit 20.
  • An expansion unit 40 is connected to the indoor heat exchange unit 30.
  • a linear expansion valve (LEV) or a capillary tube may be used as the expansion unit 40.
  • An outdoor heat exchange unit 50 is connected to the expansion unit 40.
  • the conversion unit 20 is connected to the outdoor heat exchanger 50.
  • An accumulator 60 is disposed on an inlet side refrigerant tube 114 of the conversion unit 20 and the compression unit 10.
  • the accumulator 60 provides only a gas-phase refrigerant of the refrigerant directed from the conversion unit 20 to the compression unit 10.
  • a separate heating unit (not shown) for heating the refrigerant may be installed on the accumulator 60.
  • a bypass tube 110 is breached off from the outlet side refrigerant tube 111 of the compression unit 10. At this point, the bypass tube 110 is branched off from the outlet side refrigerant tube 111 of the compressor 12 of the compression unit 10. That is, the bypass tube 110 is branched off from the outlet side refrigerant tube 111 of one or all of the compressors 11 and 12.
  • the bypass tube 110 may be connected to a refrigerant tube 112 connecting an outlet side of the expansion unit 40 to an inlet side of the compression unit 10.
  • the bypass tube 110 is connected between the outlet side of the expansion unit 40 and the inlet side refrigerant tube 112 of the outdoor heat exchange unit 50.
  • a first valve 101 is disposed on the bypass tube 110.
  • the bypass tubes 110 are branched off from the outlet side refrigerant tubes of the compressors 11 and 12, the first valves 101 is disposed on the respective bypass tubes 110.
  • An opening/closing valve for opening and closing the bypass tube 110 may be used as the first valve 101.
  • a pressure regulating unit 103 may be disposed on the bypass tube 110.
  • the pressure regulating unit 103 regulates the refrigerant discharged through the bypass tube 110 such that pressure of the refrigerant becomes similar to that of the refrigerant passing through the expansion unit 40.
  • a second valve 102 is further installed between a branch portion of the bypass tube 110 and the conversion unit 20.
  • the second valve 102 functions to discharge the refrigerant discharged from the compressors 11 and 12 only to the bypass tube 110.
  • the air conditioning system when the air conditioning system operates with the heating mode (S11), the refrigerant is compressed to a high pressure by the compression unit 10. At this point, only the main compressor 11 or both of the main compressor 11 and the sub compressor 12 can be operated depending on the heating capacity.
  • the compressed refrigerant is directed to the indoor heat exchange unit 30 by the conversion unit 20.
  • the first valve 101 is closed and the second valve 102 is opened.
  • the refrigerant and the indoor air are heat-exchanged with each other in the indoor heat exchange unit 30.
  • the refrigerant passing through the indoor heat exchange unit 30 is condensed by the heat exchange.
  • the indoor air heat-exchanged in the indoor heat exchange unit 30 is discharged into the indoor space to heat the indoor space.
  • the refrigerant discharged from the heat exchange unit 30 is directed to the expansion unit 40.
  • the refrigerant expands to a low temperature/low pressure state while passing through the expansion unit 40.
  • the expanded refrigerant is directed to the outdoor heat exchange unit 50.
  • the refrigerant of the outdoor heat exchange unit 50 absorbs heat from outdoor air to phase-changed into a gas-phase state.
  • the refrigerant discharged from the outdoor heat exchange unit 50 is directed into the conversion unit 20.
  • the conversion unit 20 allows the refrigerant to be directed into the accumulator 60.
  • the accumulator 60 allows only the gas-phase refrigerant to be directed into the compression unit 10.
  • the surface of the outdoor heat exchange unit 50 is damp with humidity contained in the outdoor air.
  • the humidity is changed into frost as the temperature of the outdoor heat exchange unit 50 is reduced.
  • the outdoor heat exchange unit 50 functions as an evaporator, the frost formed on the outdoor heat exchange unit 50 causes the deterioration of the heat exchange between the refrigerant and the outdoor air in the outdoor heat exchange unit 50. Therefore, since the temperature of the refrigerant discharged from the outdoor heat exchange unit 50 is lowered, the temperature of the refrigerant directed into the compression unit 10 is also lowered. Accordingly, the temperature of the refrigerant discharged from the compression unit 10 is lowered and thus the heating efficiency of the air conditioning system is deteriorated.
  • a defrosting mode for melding the frost formed on the outdoor heat exchange unit 50 is performed when a predetermined amount of the frost is formed on the outdoor heat exchange unit 50.
  • the temperature of the outdoor heat exchange unit 50 is detected to determine if the detected temperature is lower than a reference temperature (S12). When the detected temperature is lower than the reference temperature, the defrosting mode is performed.
  • the defrosting mode may be performed.
  • the heating mode performing times will be preset in a control unit (not shown) to correspond to respective outdoor temperatures.
  • the refrigerant discharged from the compression unit 10 flows successively along the conversion unit 20, the indoor heat exchange unit 30, the expansion unit 40, and the outdoor heat exchange unit 50. At this point, the high temperature refrigerant discharged from the compression unit 10 is continuously directed to the indoor heat exchange unit 30 to heat the indoor space. This refrigerant flow is substantially identical to that in the heating mode.
  • the first valve 101 is opened (S13), and the second valve 102 is closed.
  • a portion of the refrigerant in the compression unit 10 flows along the bypass tube 110.
  • the pressure of the refrigerant in the bypass tube 110 is uniformly regulated by the pressure regulating unit 103.
  • an amount of the refrigerant directed to the conversion unit 20 may be increased.
  • the high temperature refrigerant in the bypass tube 110 is directed to the inlet side refrigerant tube 112 of the outdoor heat exchange unit 50. At this point, the high temperature refrigerant in the bypass tube 110 is mixed with a low temperature refrigerant discharged from the expansion unit 40. Therefore, the temperature of the mixed refrigerant in the inlet side refrigerant tube 112 of the outdoor heat exchange unit 50 becomes significantly higher than the refrigerant discharged from the expansion unit 40.
  • the mixed refrigerant in the refrigerant tube 112 is directed into the outdoor heat exchange unit 50.
  • the mixed refrigerant melts the frost formed on the surface of the outdoor heat exchange unit 50.
  • the refrigerant discharged from the outdoor heat exchange unit 50 has a higher temperature than that of the refrigerant discharged in the heating mode. Therefore, the temperature of the refrigerant increases at the inlet side of the compression unit 10, the overall performance of the air conditioning system is improved.
  • the indoor space can be heated and at the same time the frost formed on the outdoor heat exchange unit 50 can be removed (S14). Therefore, there is no need to stop the heating mode operation for the defrosting mode operation.
  • the defrosting mode substantially means that the heating and defrosting modes are simultaneously performed.
  • the refrigerant varies along a line C1-C2-C3-C4-C1 in the heating mode cycle and varies along a line C6-C7-C3-C5-C7 in the defrosting mode cycle.
  • the outlet side pressure of the compression unit becomes P1.
  • a portion of the compressed refrigerant bypasses to the inlet side refrigerant 111 of the outdoor heat exchange unit 50 through the bypass tube 110 and thus the pressure of the refrigerant becomes P3 while passing through the expansion valve 40.
  • the bypassing refrigerant is mixed with the outlet side refrigerant of the expansion unit 40 and thus the pressure of the mixed refrigerant increases to P3 and the temperature thereof also increases.
  • the inlet side temperature of the outdoor heat exchange unit 50 is higher than that in the heating mode cycle, the frost formed on the surface of the outdoor heat exchange unit 50 increases. Accordingly, the defrosting mode cycle moves upward and thus the overall efficiency of the air conditioning system is improved.
  • FIG. 4 is a circuit diagram of an air conditioning system according to a second embodiment of the present invention
  • FIG. 5 is a P-h graph of the air conditioning system of FIG. 3 .
  • an air conditioning system of this second embodiment is identical to that of the first embodiment except that a bypass tube 120 is connected to a refrigerant tube 113 between an outlet side of an outdoor heat exchange unit 50 and a conversion unit 20.
  • a bypass tube 120 is connected to a refrigerant tube 113 between an outlet side of an outdoor heat exchange unit 50 and a conversion unit 20.
  • the refrigerant discharged from the compression unit 10 flows successively along the conversion unit 20, the indoor heat exchange unit 30, the expansion unit 40, and the outdoor heat exchange unit 50. At this point, the high temperature refrigerant discharged from the compression unit 10 is continuously directed to the indoor heat exchange unit 30 to heat the indoor space.
  • the first valve 101 is opened, and the second valve 102 is closed.
  • a portion of the refrigerant in the compression unit 10 flows along the bypass tube 120.
  • the refrigerant discharged from the compressor 11 is directed to the conversion unit 20 and the refrigerant discharged from the compressor 12 flows along the bypass tube 120.
  • the pressure of the refrigerant in the bypass tube 120 is uniformly regulated by the pressure regulating unit 103 to be identical or similar to that of the refrigerant in the outlet side refrigerant tube 113.
  • the high temperature refrigerant in the bypass tube 120 is directed to the outlet side refrigerant tube 113 of the outdoor heat exchange unit 50. At this point, the high temperature refrigerant in the bypass tube 110 is mixed with a low temperature refrigerant discharged from the outdoor heat exchange unit 40. Therefore, the temperature of the mixed refrigerant becomes significantly higher than the refrigerant discharged from the outdoor heat exchange unit 50.
  • the mixed refrigerant in the refrigerant tube 113 is directed into the accumulator 60 through the conversion unit 20. Therefore, since the temperature of the refrigerant at the inlet side of the compression unit 10 increases, the compression efficiency of the compression unit is improved.
  • the outlet side refrigerant of the compression unit 10 becomes higher than that in the heating mode.
  • the refrigerant discharged from the compression unit 10 flows along the conversion unit 20, the indoor heat exchange unit 30, and the expansion unit 40 successively.
  • the inlet side refrigerant of the outdoor heat exchange unit 50 has a higher temperature than that of the refrigerant discharged in the heating mode. Therefore, the forming of the frost on the surface of the outdoor heat exchange unit 50 is retarded as the refrigerant flows through the outdoor heat exchange unit 50. As described above, as the defrosting cycle increases and thus the defrosting period can be prolonged.
  • the refrigerant varies along a line C11-C12-C13-C14-C11 in the heating mode cycle and varies along a line C15-C16-C17-C18-C15 in the defrosting mode cycle.
  • the pressure of the refrigerant at the outlet side of the outdoor heat exchange unit 50 becomes P4 and the inlet side refrigerant of the compression unit 10 becomes P4.
  • the pressure P5 of the refrigerant discharged from the compression unit 10 becomes higher than that in the heating mode
  • the pressure P4 of the inlet side refrigerant of the outdoor heat exchange unit 50 also increases.
  • the temperature of the refrigerant directed to the outdoor heat exchange unit 50 increases, the temperature of the surface of the outdoor heat exchange unit 50 increases. Accordingly, the forming of the frost on the outdoor heat exchange unit 50 can be retarded. Since the defrosting mode cycle moves upward, the overall efficiency of the air conditioning system is improved.
  • FIG. 6 is a circuit diagram of an air conditioning system according to a third embodiment of the present invention.
  • an air conditioning system of this second embodiment is identical to that of the first embodiment except that a bypass tube 130 is connected to a refrigerant tube 114 between a refrigerant outlet side of a conversion unit 20 and an inlet side of an accumulator 60.
  • a bypass tube 130 is connected to a refrigerant tube 114 between a refrigerant outlet side of a conversion unit 20 and an inlet side of an accumulator 60.
  • the third embodiment is identical in an operation to the second embodiment in that the bypass tube 130 is connected to the outlet side refrigerant tube 114 of the outdoor heat exchange unit 50, the operation of the third embodiment will not be described herein.
  • the indoor air is heated and at the same time the forming of the frost on the outdoor heat exchange unit 50 can be prevented.
  • the air conditioning system of the present invention has the following effects.
  • the heating and defrosting modes can be simultaneously performed. Furthermore, there is no need to stop the heating mode operation for performing the defrosting mode operation.
  • the defrosting mode performing period can be prolonged.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)
EP07112181.8A 2006-07-11 2007-07-10 Air conditioning system and method of controlling the same Not-in-force EP1878985B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020060064719A KR100821729B1 (ko) 2006-07-11 2006-07-11 공기 조화 시스템

Publications (3)

Publication Number Publication Date
EP1878985A2 EP1878985A2 (en) 2008-01-16
EP1878985A3 EP1878985A3 (en) 2010-02-24
EP1878985B1 true EP1878985B1 (en) 2013-10-09

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EP07112181.8A Not-in-force EP1878985B1 (en) 2006-07-11 2007-07-10 Air conditioning system and method of controlling the same

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EP (1) EP1878985B1 (es)
JP (1) JP5313467B2 (es)
KR (1) KR100821729B1 (es)
ES (1) ES2432756T3 (es)

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WO2010107691A1 (en) * 2009-03-17 2010-09-23 Carrier Corporation Demand defrost for heat pumps
DE102012111672B4 (de) 2012-04-26 2013-12-05 Visteon Global Technologies, Inc. Kältemittelkreislauf einer Klimaanlage mit Wärmepumpen- und Nachheizfunktionalität
US20180368384A1 (en) * 2017-06-21 2018-12-27 Esther Kim Extendable and Adjustable Insect Entrapment Apparatus

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3243672A1 (de) * 1982-11-25 1984-05-30 KKW Kulmbacher Klimageräte-Werk GmbH, 8650 Kulmbach Luft-wasser-waermepumpe
JPH076661B2 (ja) * 1988-04-11 1995-01-30 ダイキン工業株式会社 空気調和装置の遠隔制御装置
JP2792265B2 (ja) * 1991-06-03 1998-09-03 ダイキン工業株式会社 冷凍装置
JP2993180B2 (ja) * 1991-06-13 1999-12-20 ダイキン工業株式会社 空気調和装置
KR19980073107A (ko) * 1997-03-12 1998-11-05 구자홍 냉난방 공조기기의 적상방지장치
JP3888403B2 (ja) * 1997-12-18 2007-03-07 株式会社富士通ゼネラル 空気調和機の制御方法およびその装置
JP4441965B2 (ja) * 1999-06-11 2010-03-31 ダイキン工業株式会社 空気調和装置
KR101013373B1 (ko) * 2003-08-28 2011-02-14 삼성전자주식회사 공기조화기
KR20050078534A (ko) * 2004-02-02 2005-08-05 엘지전자 주식회사 멀티 공기조화기 및 그 제어방법
JP2006105560A (ja) * 2004-10-08 2006-04-20 Matsushita Electric Ind Co Ltd 空気調和装置
JP2006132797A (ja) * 2004-11-02 2006-05-25 Matsushita Electric Ind Co Ltd 空気調和装置

Also Published As

Publication number Publication date
EP1878985A3 (en) 2010-02-24
KR100821729B1 (ko) 2008-04-11
JP5313467B2 (ja) 2013-10-09
EP1878985A2 (en) 2008-01-16
KR20080006055A (ko) 2008-01-16
JP2008020181A (ja) 2008-01-31
ES2432756T3 (es) 2013-12-05

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