US20060070719A1 - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
US20060070719A1
US20060070719A1 US11/240,776 US24077605A US2006070719A1 US 20060070719 A1 US20060070719 A1 US 20060070719A1 US 24077605 A US24077605 A US 24077605A US 2006070719 A1 US2006070719 A1 US 2006070719A1
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United States
Prior art keywords
air
unit
air conditioner
refrigerant pipe
outdoor
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.)
Abandoned
Application number
US11/240,776
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English (en)
Inventor
Sung Kim
Song Choi
Baik Chung
Se Chang
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
Assigned to LG ELECTRONICS INC. reassignment LG ELECTRONICS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHUNG, BAIK-YOUNG, CHANG, SE-DONG, CHOI, SONG, KIM, SUNG-HWAN
Publication of US20060070719A1 publication Critical patent/US20060070719A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/26—Refrigerant piping
    • F24F1/28—Refrigerant piping for connecting several separate outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/001—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems in which the air treatment in the central station takes place by means of a heat-pump or by means of a reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/00075—Indoor units, e.g. fan coil units receiving air from a central station
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/26—Refrigerant piping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/26—Refrigerant piping
    • F24F1/32—Refrigerant piping for connecting the separate outdoor units to indoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • F24F3/065—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/54—Heating and cooling, simultaneously or alternatively
    • 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
    • F25B2313/006—Compression machines, plants or systems with reversible cycle not otherwise provided for two pipes connecting the outdoor side to the indoor side with multiple indoor units
    • 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
    • F25B2313/007—Compression machines, plants or systems with reversible cycle not otherwise provided for three pipes connecting the outdoor side to the indoor side with multiple indoor units
    • 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
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0231—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with simultaneous cooling and heating
    • 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
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems

Definitions

  • the present invention relates to an air conditioner, and particularly, to an air conditioner having a relatively short refrigerant pipe so as to reduce the amount of accumulated refrigerant and a pressure loss.
  • an air conditioner is designed to control the temperature, the humidity, the air current and the cleanness of the air for the purpose of forming a pleasant indoor environment.
  • air conditioners are divided into an integrated type air conditioner which has an indoor unit and an outdoor unit in one case, and a separated type air conditioner in which a compressor, a condenser and an evaporator are separately installed such that an outdoor unit includes the compressor and the condenser and an indoor unit includes the evaporator.
  • Some of the air conditioners are provided with flow-path switching valves for switching a flow path of a refrigerant, thereby selectively performing cooling and heating.
  • a so called multi-type air conditioner having a plurality of indoor units is increasingly used, which is able to perform cooling or heating room by room of a building.
  • FIG. 1 is a configuration view that illustrates a related art air conditioner.
  • the related art air conditioner includes an outdoor unit 101 disposed outside and a plurality of indoor units 111 disposed in an interior space (e.g. room) to be cooled or heated.
  • the outdoor unit 101 includes a compressor (not shown) for compressing a refrigerant and an outdoor heat exchanger (not shown) performing heat-exchange while contacting with the outdoor air.
  • the indoor unit 111 includes an indoor heat exchanger (not shown) connected to the compressor and the outdoor heat exchanger to constitute a cooling cycle.
  • a distribution unit 121 is provided between the outdoor unit 101 and the indoor unit 111 so as to distribute to each indoor unit 111 , a refrigerant provided from the outdoor unit 101 .
  • a plurality of connection ports 122 connected to a plurality of refrigerant pipes 123 are formed at the distribution unit 121 .
  • the related art air conditioner may cause a great pressure loss because of a lengthened refrigerant pipe 123 .
  • a height difference between the outdoor unit 101 and the indoor unit 111 is big, a head loss greatly occurs.
  • an air conditioner comprising: at least one outdoor unit having a compressor and an outdoor heat exchanger; an air process unit including a heat exchanger connected to the outdoor unit by a refrigerant pipe, in which the air is heat exchanged, and a blower fan blowing the heat exchanged air; and a duct having one side connected to the air process unit and another side connected to a plurality of rooms, and introducing to the room, the air blown after heat exchange.
  • FIG. 2 is a configuration view of an air conditioner in accordance with a first embodiment of the present invention
  • FIG. 3 is a configuration view of the air conditioner in accordance with a second embodiment of the present invention.
  • FIG. 4 is a configuration view of the air conditioner in accordance with a third embodiment of the present invention.
  • FIG. 2 is a configuration view of the air conditioner in accordance with the first embodiment of the present invention.
  • the air conditioner in accordance with the first embodiment of the present invention includes an outdoor unit 10 , an air process unit 20 and a duct 40 .
  • the outdoor unit 10 includes a compressor 11 compressing a refrigerant, and an outdoor heat exchanger 13 disposed at one side of the compressor 11 , in which a refrigerant is heat exchanged by contacting with the outdoor air.
  • a flow-path switching valve 15 is installed at a discharge side of the compressor 11 so as to switch a flow path of a refrigerant, and an accumulator 17 is provided at an intake side of the compressor 11 so as to receive a gaseous refrigerant.
  • a port of the flow-path switching valve is connected to the outdoor heat exchanger 13 , and another port is connected to the accumulator 17 .
  • Still another port of the flow-path switching valve is connected to a main refrigerant pipe 29 .
  • An outdoor expansion device 16 is installed at one side of the outdoor heat exchanger 13 , and a bypass path 18 having a check valve 19 is formed at one side of the outdoor expansion device 16 .
  • a main refrigerant pipe 29 and an auxiliary refrigerant pipe 30 allowing each air process unit 20 and the outdoor unit 10 to be in communication with each other are installed between the outdoor unit 10 and the air process unit 20 .
  • One side of the main refrigerant pipe 29 is connected to one side of the outdoor unit 10 , and the other side thereof is connected to the auxiliary refrigerant pipe 30 .
  • auxiliary pipe 30 One side of the auxiliary pipe 30 is connected to the main refrigerant pipe 29 , and its other side is connected to a heat exchanger 23 .
  • the air process unit 20 includes a cabinet 22 , a heat exchanger 23 , an indoor expansion device 25 and a blower fan 27 .
  • the cabinet 22 is a box having therein a receiving space and forming an exterior of the air process unit 20 .
  • the heat exchanger 23 is received in the cabinet 22 and connected to the compressor 1 and the outdoor heat exchanger 13 to constitute a refrigerant circuit.
  • the indoor expansion device 25 is disposed at the left side of the heat exchanger 23 , and a refrigerant is decompressed and expanded.
  • the blower fan 27 is disposed under the heat exchanger 23 , accelerates heat exchange of the heat exchanger 23 and blows the heat-exchanged air to each room (R).
  • a humidifier 31 In order to improve performance of the air process unit 20 , a humidifier 31 , a filter member 33 and an electric heater 35 are additionally installed.
  • the humidifier 31 is installed above the heat exchanger 23 and humidifies the air having passed through the heat exchanger 23 .
  • the filter member 33 is installed above the humidifier 31 and removes foreign substances within the air.
  • the electric heater 35 is installed above the filter member 33 and heats the air having passed through the heat exchanger 23 , again.
  • the installation order and position of the above-mentioned heat exchanger 23 , the blower fan 27 , the humidifier 31 , the filter member 33 and the electric heater 35 may be varied in consideration of the performance of the air process unit 20 .
  • the duct 40 is installed at an upper side of the cabinet 22 and goes by way of each room (R).
  • the duct 40 has an air path allowing air heat exchanged in the heat exchanger 23 to flow to each room (R) and a plurality of discharge holes 42 through which the heat exchanged air can be discharged.
  • the duct may be divided into an air supply duct (not shown) for transferring to each room (R), the air processed by the air process unit 20 , and a ventilation duct (not shown) provided with a ventilation fan (not shown) for transferring the air of each room (R) to the air process unit 20 .
  • the flow-path switching valve 15 switches a flow path so as to allow a compressed refrigerant to flow to the outdoor heat exchanger 13 .
  • the refrigerant having condensed through the outdoor heat exchanger 13 is distributed to the air process unit 20 , which is in operation, through the main refrigerant pipe 29 and the auxiliary refrigerant pipe 30 , and is decompressed and expanded while passing through the indoor expansion device 25 .
  • the refrigerant absorbs latent heat by heat exchange in the heat exchanger 23 , thereby being evaporated.
  • the flow-path switching valve 15 switches the flow path to allow the compressed refrigerant to flow to the air process unit 20 .
  • the compressed refrigerant is introduced to the heat exchanger 23 of the air process unit 20 through the main refrigerant pipe 29 and the auxiliary refrigerant pipe 30 .
  • the refrigerant heat exchanged and condensed in the heat exchanger 23 passes through the main refrigerant pipe 29 and the auxiliary refrigerant pipe 30 , and is depressed and expanded while passing through the outdoor expansion device 16 . Then, the refrigerant absorbs latent heat in the outdoor heat exchanger 13 to be evaporated.
  • the evaporated refrigerant is taken into the compressor 11 via the flow-switching valve 15 and the accumulator 17 . Such processes are repetitively performed.
  • the air comes in contact with the heat exchanger 23 to thereby be heated, and is humidified by the humidifier 31 .
  • a refrigerant pipe 123 (refer to FIG. 1 ) does not need to be extended to the related art indoor unit 111 (refer to FIG. 1 ).
  • a long refrigerant pipe 123 (refer to FIG. 1 ) for supplying a refrigerant from the outdoor unit 101 (refer to FIG. 1 ) to the indoor unit 111 (refer to FIG. 1 ) according to the related art air conditioner is not required. Therefore, the amount of accumulated refrigerant and a pressure loss can be reduced.
  • FIG. 3 is a configuration view of the air conditioner in accordance with the second embodiment of the present invention.
  • the same reference numerals are designated to the same parts as those of the aforementioned structure, and the detailed description thereon will be omitted.
  • the air conditioner in accordance with the second embodiment of the present invention includes an outdoor unit 10 , an air process unit 20 , a duct 40 and a distribution unit 50 .
  • the outdoor unit 10 includes a compressor 11 compressing a refrigerant, and an outdoor heat exchanger 13 disposed at one side of the compressor 11 , in which a refrigerant is heat exchanged by contacting with the outdoor air.
  • a flow-path switching valve 14 is installed at a discharge side of the compressor 11 so as to switch a flow path of the refrigerant, and an accumulator 17 is provided at its intake side so as to receive a gaseous refrigerant.
  • a port of the flow-path switching valve 14 is connected to the outdoor heat exchanger 13 , and another port is connected to the accumulator 17 . Still another port of the flow-path switching valve 14 is connected to the distribution unit 50 .
  • An outdoor expansion device 16 is installed at one side of the outdoor heat exchanger 13 , and a bypass path 18 provided with a check valve 19 is formed at one side of the outdoor expansion device 16 .
  • the air process unit 20 in accordance with the second embodiment includes a cooling unit 21 a and a heating unit 21 b individually, such that cooling and heating can be performed on each room (R) at the same time.
  • the cooling unit 21 a and the heating unit 21 b each include a cabinet 22 , a heat exchanger 23 , an indoor expansion device 25 , a blower fan 27 , and a filter member 33 .
  • the cabinet 22 is a box having a receiving space therein and forming an exterior of the cooling unit 21 a and the heating unit 21 b.
  • the heat exchanger 23 is received in the cabinet 22 and is connected to the compressor 11 and the outdoor heat exchanger 13 to constitute a refrigerant circuit.
  • the indoor expansion device 25 for decompressing and expanding a refrigerant is disposed at the right side of the heat exchanger 23 .
  • the blower fan 27 is disposed under the heat exchanger 23 , accelerates heat exchange of the heat exchanger 23 , and blows the heat exchanged air so that the air can be supplied to each room (R).
  • the filter member 33 is installed above a humidifier 31 , and removes foreign substances within the air.
  • the installation order and position of the above-mentioned heat exchanger 23 , the blower fan 27 , and the filter member 33 may be varied in consideration of the performance of the air process unit 20 .
  • the duct 40 is installed at an upper side of the cabinet 22 , and includes a cooling duct 41 a and a heating duct 41 b.
  • the cooling duct 41 a supplies to each room (R), the air cooled in the cooling unit 21 a.
  • the heating duct 41 b supplies to each room (R), the air heated in the heating unit 21 b.
  • a plurality of discharge holes 42 through which the air is discharged to each room (R) are provided at the cooling duct 41 a and the heating duct 41 b.
  • the distribution unit 50 distributes a refrigerant, such that part of the air process unit 20 performs cooling operation and another part thereof performs heating operation.
  • the distribution unit 50 includes a high-pressure pipe 52 , a low-pressure pipe 54 , a liquid pipe 56 , a high-pressure valve 53 and a low-pressure valve 55 .
  • One side of the high-pressure pipe 52 is connected to a discharge side of the compressor 11 , and its other side is connected to the air process unit 20 .
  • One side of the low-pressure pipe 54 is connected to an intake side of the accumulator 1 , and its other side is connected to the air process unit 20 .
  • One side of the liquid pipe 56 is connected to the outdoor heat exchanger 13 , and its other side is connected to the air process unit 20 .
  • the high-pressure valve 53 is installed on the high-pressure pipe 52 , and opens and closes the high-pressure pipe 52 .
  • the low-pressure valve 55 is installed on the low-pressure pipe 54 , and opens and closes the low-pressure pipe 54 .
  • Cooling dominant operation in which the majority among units of the air process unit 20 perform cooling operation while some few of the units perform heating operation will be described as an example.
  • the flow-path switching valve 14 switches a flow path, such that a compressed refrigerant flows to the outdoor heat exchanger 13 .
  • the refrigerant having passed through the outdoor heat exchanger 13 flows to the distribution unit 50 along the liquid pipe 56 .
  • a portion of the refrigerant flows to the distribution unit 50 along the high-pressure pipe 52 .
  • the refrigerant flowing along the liquid pipe 56 is introduced to the cooling unit 21 a to perform the cooling operation.
  • the air blown as the blower fan 27 is operated comes in contact with the heat exchanger 23 to thereby be cooled.
  • foreign substances of the air are removed by the filter member 33 , and then the air is discharged to each room (R) through the discharge hole 42 along the cooling duct 41 a.
  • the refrigerant having performed the cooling operation passes through the opened low-pressure valve 55 and then is taken into the accumulator 17 along the low-pressure pipe 54 .
  • the refrigerant flowing along the high-pressure pipe 52 is introduced to the heating unit 21 b through the opened high-pressure valve 53 , to thereby perform the heating operation.
  • the air blown as the blower fan 27 of the heating unit 21 b is operated comes in contact with the heat exchanger 23 to thereby be heated.
  • foreign substances of the air are moved by the filter member 33 , and the air is discharged to each room (R) along the heating duct 41 b.
  • a related art refrigerant pipe 123 (refer to FIG. 1 ) does not need to be extended to the related art indoor unit 111 (refer to FIG. 1 ).
  • the amount of accumulated refrigerant and a pressure loss can be reduced.
  • FIG. 4 is a configuration view of the air conditioner in accordance with the third embodiment of the present invention.
  • the same reference numerals are designated to the same parts as those of the aforementioned structure, and the detailed description thereon will be omitted.
  • the air conditioner in accordance with the third embodiment of the present invention includes an outdoor unit 10 , a heat exchange unit 60 and a fan coil unit 65 .
  • the outdoor unit 10 includes a compressor 11 for compressing a refrigerant, and an outdoor heat exchanger 13 disposed at one side of the compressor 11 , in which a refrigerant is heat exchanged by contacting with the outdoor air.
  • a flow-path switching valve 15 is installed at a discharge side of the compressor 11 so as to switch a flow path of a refrigerant, and an accumulator 17 is provided at an intake side thereof so as to take in a gaseous refrigerant.
  • a port of the flow-path switching valve 15 is connected to the outdoor heat exchanger 13 , and another port is connected to an accumulator 17 .
  • Still Another port of the flow-path switching valve 15 is connected to a main refrigerant pipe 29 .
  • An outdoor expansion device 16 is installed at one side of the outdoor heat exchanger 13 , and a bypass path 18 provided with a check valve 19 is formed at one side of the outdoor expansion device 16 .
  • a main refrigerant pipe 29 and an auxiliary refrigerant pipe 30 allowing the outdoor unit 10 and the heat exchange unit 60 to be in communication with each other are installed between the outdoor unit 10 and the heat exchange unit 60 .
  • One side of the main refrigerant pipe 29 is connected to the outdoor unit 10 , and its other side is connected to the auxiliary refrigerant pipe 30 .
  • auxiliary refrigerant pipe 30 is connected to the main refrigerant pipe 29 , and its other side connected to the heat exchanger 23 .
  • the heat exchange unit 60 includes a water storage tank 62 and a heat exchanger 23 .
  • the water storage tank 62 has therein a heater 64 for heating stored water.
  • a water pipe 63 is connected to one side of the water storage tank 62 so as to allow the water to circulate to the fan coil unit 65 disposed at each room (R).
  • a circulation pump 67 allowing water to circulate is installed on the water pipe 63 .
  • the heat exchanger 23 is received in the water tank 62 and is connected to the compressor 11 and the outdoor heat exchanger 13 .
  • the fan coil unit 65 is installed in each room (R) and is connected to the heat exchange unit 60 by the water pipe 63 .
  • An opening and closing valve 69 for opening and closing a flow path is provided at one side of the fan coil unit 65 .
  • the flow-path switching valve 15 switches a flow path so as to allow a compressed refrigerant to flow to the outdoor heat exchanger 13 .
  • the refrigerant heat exchanged in the heat exchanger 23 passes through the main refrigerant pipe 29 and the auxiliary refrigerant pipe 30 , and then passes through the indoor expansion device 25 of the heat exchange unit 60 to be decompressed and expanded.
  • a refrigerant is evaporated by absorbing latent heat in the heat exchanger 23 .
  • water circulated by the circulation pump 67 is cooled by the heat exchanger 23 , and the cooled water is introduced to the fan coil unit 65 along the water pipe 63 to perform the cooling operation.
  • the flow path switching valve 15 switches a flow path so as to allow a compressed refrigerant to flow toward the heat exchange unit 60 .
  • the refrigerant introduced to the heat exchanger 23 of the heat exchange unit 60 after passing through the main refrigerant pipe 29 and the auxiliary refrigerant pipe 30 is heat exchanged with water flowing along the water pipe 63 to thereby condensed.
  • the condensed refrigerant is decompressed and expanded while passing through the outdoor expansion device 16 , is evaporated upon absorbing latent heat in the outdoor heat exchanger 13 , and is taken into the compressor 11 via the accumulator 17 .
  • Water circulated by the circulation pump 67 is heat exchanged with the heat exchanger 23 and is heated by the heater 64 when necessary, and is introduced to the fan coil unit 65 along the water pipe 63 , thereby performing heating operation.
  • the related art refrigerant pipe 123 does not need to be extended to the related art indoor unit 111 (refer to FIG. 1 ).
  • a long refrigerant pipe 123 (referring to FIG. 1 ) for supplying a refrigerant from the outdoor unit 101 (referring to FIG. 1 ) to the indoor unit 111 (referring to FIG. 1 ) according to the related art air conditioner is not required. Therefore, the amount of accumulated refrigerant and a pressure loss can be reduced.
  • the case where only the filter member 33 is provided at the heating unit 21 b is taken as an example.
  • the humidifier 31 and the electric heater 35 shown in FIG. 3 may be further provided at the heating unit 21 b.
  • the distribution unit 50 shown in FIG. 3 may be further provided such that part of the heat exchange unit 60 performs the cooling operation and another part performs the heating operation.
  • the air conditioner in accordance with the embodiments of the present invention has the following advantages.
  • a pressure loss and a head loss can be reduced because of its short refrigerant pipe.
  • oil having been discharged outside the compressor together with a compressor refrigerant can be easily recovered.
  • the risk of suffocation due to the leakage of refrigerant is reduced.
  • a special ventilation system for preventing suffocation is not required, a cost can be reduced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Other Air-Conditioning Systems (AREA)
US11/240,776 2004-10-05 2005-10-03 Air conditioner Abandoned US20060070719A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR79159/2004 2004-10-05
KR1020040079159A KR100619746B1 (ko) 2004-10-05 2004-10-05 하이브리드 공기조화기

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US20060070719A1 true US20060070719A1 (en) 2006-04-06

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US11/240,776 Abandoned US20060070719A1 (en) 2004-10-05 2005-10-03 Air conditioner

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US (1) US20060070719A1 (de)
EP (1) EP1645811A3 (de)
KR (1) KR100619746B1 (de)
CN (1) CN1757979A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100051229A1 (en) * 2008-08-27 2010-03-04 Lg Electronics Inc. Air conditioning system
US20110113802A1 (en) * 2008-04-30 2011-05-19 Mitsubishi Electric Corporation Air conditioner
US20110192184A1 (en) * 2008-10-29 2011-08-11 Mitsubishi Electric Corporation Air-conditioning apparatus and relay unit
EP2518416A1 (de) * 2011-04-28 2012-10-31 MITSUBISHI HEAVY INDUSTRIES, Ltd. Abzweigrohr und Klimaanlagensystem
WO2013182320A1 (de) * 2012-06-08 2013-12-12 Yack S.A.S. Klimaanlage
US20150121939A1 (en) * 2012-03-14 2015-05-07 Denso Corporation Refrigeration cycle device
US20170082334A1 (en) * 2014-05-30 2017-03-23 Mitsubishi Electric Corporation Air-conditioning apparatus
US20190338981A1 (en) * 2015-04-06 2019-11-07 Daikin Industries, Ltd. Usage-side air-conditioning apparatus and air-conditioning apparatus provided with same
CN114279104A (zh) * 2021-11-15 2022-04-05 珠海格力电器股份有限公司 养殖舍用冷热源机组及养殖舍环控系统

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110113802A1 (en) * 2008-04-30 2011-05-19 Mitsubishi Electric Corporation Air conditioner
US9212825B2 (en) * 2008-04-30 2015-12-15 Mitsubishi Electric Corporation Air conditioner
US20100051229A1 (en) * 2008-08-27 2010-03-04 Lg Electronics Inc. Air conditioning system
US9127865B2 (en) * 2008-08-27 2015-09-08 Lg Electronics Inc. Air conditioning system including a bypass pipe
US9587843B2 (en) * 2008-10-29 2017-03-07 Mitsubishi Electric Corporation Air-conditioning apparatus and relay unit
US20110192184A1 (en) * 2008-10-29 2011-08-11 Mitsubishi Electric Corporation Air-conditioning apparatus and relay unit
EP2518416A1 (de) * 2011-04-28 2012-10-31 MITSUBISHI HEAVY INDUSTRIES, Ltd. Abzweigrohr und Klimaanlagensystem
US20150121939A1 (en) * 2012-03-14 2015-05-07 Denso Corporation Refrigeration cycle device
US10168079B2 (en) * 2012-03-14 2019-01-01 Denso Corporation Refrigeration cycle device
WO2013182320A1 (de) * 2012-06-08 2013-12-12 Yack S.A.S. Klimaanlage
US20150276243A1 (en) * 2012-06-08 2015-10-01 Yack S.A.S. Air conditioning installation
US20170082334A1 (en) * 2014-05-30 2017-03-23 Mitsubishi Electric Corporation Air-conditioning apparatus
US10451324B2 (en) * 2014-05-30 2019-10-22 Mitsubishi Electric Corporation Air-conditioning apparatus
US20190338981A1 (en) * 2015-04-06 2019-11-07 Daikin Industries, Ltd. Usage-side air-conditioning apparatus and air-conditioning apparatus provided with same
US10928092B2 (en) * 2015-04-06 2021-02-23 Daikin Industries, Ltd. Usage-side air-conditioning apparatus and air-conditioning apparatus provided with same
CN114279104A (zh) * 2021-11-15 2022-04-05 珠海格力电器股份有限公司 养殖舍用冷热源机组及养殖舍环控系统

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EP1645811A3 (de) 2006-11-02

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