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US20140069132A1 - Variable-damper multi-function heat pump air conditioner - Google Patents

Variable-damper multi-function heat pump air conditioner Download PDF

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Publication number
US20140069132A1
US20140069132A1 US13/909,100 US201313909100A US2014069132A1 US 20140069132 A1 US20140069132 A1 US 20140069132A1 US 201313909100 A US201313909100 A US 201313909100A US 2014069132 A1 US2014069132 A1 US 2014069132A1
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Prior art keywords
air
fan
outdoor
indoor
facing
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Abandoned
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US13/909,100
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English (en)
Inventor
King-Leung Wong
Te-Kuo Chiang
Shing-Ha Wang
Yu-che Chiang
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Kun Shan Univ
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Kun Shan Univ
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Assigned to KUN SHAN UNIVERSITY reassignment KUN SHAN UNIVERSITY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHIANG, TE-KUO, CHIANG, YU-CHE, WANG, SHING-HA, WONG, KING-LEUNG
Publication of US20140069132A1 publication Critical patent/US20140069132A1/en
Abandoned legal-status Critical Current

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    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • 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
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/022—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing comprising a compressor cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/81—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the air supply to heat-exchangers or bypass channels
    • 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
    • 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

Definitions

  • the present invention relates to air conditioning technology and more particularly, to a variable-damper multi-function heat pump air conditioner that allows adjustment of damper position to run under the mode of cooling function in hot weather, the mode of heating function in cold weather, the mode of indoor-air and outdoor-air exchanging with/without cooling function in hot weather, the mode of indoor-air and outdoor-air exchanging with/without heating function in cold weather, the mode of one-fan-operation-only energy-saving quiet indoor-air and outdoor-air exchanging function, or the mode of dehumidifying with heating function in cold and humid weather.
  • FIG. 1 illustrates a conventional heat pump type air-conditioner with cooling and heating functions, which uses a four-way valve and two one-way valves to control refrigerant flowing direction, enabling the indoor heat exchanger and the outdoor heat exchanger to work as an evaporator or condenser, thereby cooling or heating the flow of air passing therethrough.
  • the four-way valve works in high-pressure pipes, the pressure difference between at two opposite sides of the four-way valve during the operation can be over 10 ATM. When switching the heating/cooling function through four-way valve at this time may cause damage the switching mechanism.
  • QH heating capacity
  • QL cooling capacity
  • W electric work
  • the surface area of the condenser must be 1.21.3 times of that of the evaporator to match the energy conversion rate. Therefore, the indoor and outdoor heat exchangers of this four-way valve-based heat pump type air-conditioner with cooling and heating functions must be used as an evaporator as well as a condenser.
  • This design of air conditioner has many problems as follows:
  • the indoor heat-exchanger must be relatively smaller than the outdoor heat-exchanger to match energy conversion during a cooling operation to achieve high performance; however, when running the heating function in cold weather, the energy conversion between the heating capacity (QH) and the cooling capacity (QL) shown in FIG. 2 will not match, leading to low performance, or causing the protection switch to trip off.
  • the indoor heat-exchanger must be relatively larger than the outdoor heat-exchanger to match energy conversion during a heating operation to achieve high performance
  • the energy conversion between the heating capacity (QH) and the cooling capacity (QL) shown in FIG. 2 will not match, leading to low performance, or causing the protection switch to trip off.
  • the present invention has been accomplished under the circumstances in view. It is therefore the main object of the present invention to provide a variable-damper multi-function heat pump air conditioner, which eliminates the use of a four-way valve and allows adjustment of damper position to run under the mode of cooling function in hot weather, the mode of heating function in cold weather, the mode of indoor-air and outdoor-air exchanging with/without cooling function in hot weather, the mode of indoor-air and outdoor-air exchanging with/without heating function in cold weather, the mode of one-fan-operation-only energy-saving quiet indoor-air and outdoor-air exchanging function, or the mode of dehumidifying with heating function in cold and humid weather, the hot air is ever generated from the fixed bigger condenser and the cold air is ever generated from the fixed smaller evaporator, thus both the high cooling and heating performances can be obtained.
  • a variable-damper multi-function heat pump air conditioner in accordance with the present invention comprises a housing and an air-conditioning system mounted in said housing, said air-conditioning system comprising a closed-loop refrigeration cycle formed of an evaporator, a condenser and a compressor, a first fan disposed at one lateral side relative to the evaporator, a second fan disposed at one lateral side relative to the condenser, and a control unit for controlling the operation of the closed-loop refrigeration cycle, the first fan and the second fan.
  • the housing comprises a transverse partition plate, an upper chamber and a lower chamber separated by the transverse partition plate, an upper damper pivotally mounted in the upper chamber, a lower damper pivotally mounted in the lower chamber, an indoor-facing outlet and an outdoor-facing outlet respectively located at opposing front side and back side of the upper chamber, an indoor-facing inlet and an outdoor-facing inlet respectively located at opposing front side and back side of the lower chamber.
  • the angular position of the upper damper and the angular position of the lower damper are adjustable to define a cold air passage and a hot air passage separately in the housing.
  • the evaporator and the first fan are disposed in the cold air passage.
  • the condenser and the second fan are disposed in the hot air passage.
  • the cold air passage and the hot air passage each define an air inlet end and an air outlet end.
  • the air inlet end of the cold air passage is connected to the indoor-facing inlet and the outdoor-facing inlet of the lower chamber
  • the air inlet end of the hot air passage is connected to the outdoor-facing inlet and the indoor-facing inlet of the lower chamber.
  • the air outlet end of the cold air passage is connected to the indoor-facing outlet and outdoor-facing outlet of the upper chamber
  • the air outlet end of the hot air passage is connected to the outdoor-facing outlet and indoor-facing outlet of the upper chamber.
  • the air-conditioner can be controlled to run under the mode of cooling function in hot weather, the mode of heating function in cold weather, the mode of indoor-air and outdoor-air exchanging with/without cooling function in hot weather, the mode of indoor-air and outdoor-air exchanging with/without heating function in cold weather, the mode of one-fan-operation-only energy-saving quiet indoor-air and outdoor-air exchanging function, or the mode of dehumidifying with heating function in cold and humid weather, improving the drawbacks of conventional four-way valve designs. Further, because cold air is constantly generated by the relatively smaller evaporator and hot air is always generated by the relatively larger condenser, the energy efficiency of cooling function as well as heating function is maintained at high level.
  • the evaporator and the condenser are respectively disposed in the lower chamber at two opposite sides.
  • the first fan and the second fan are respectively disposed above the evaporator and the condenser.
  • the first fan and the second fan are respectively disposed in the upper chamber at two opposite sides for drawing cold air or hot air into the upper chamber.
  • variable-damper multi-function heat pump air conditioner comprises a housing and an air-conditioning system mounted in said housing, said air-conditioning system comprising a closed-loop refrigeration cycle formed of an evaporator, a condenser and a compressor, a first fan disposed at one lateral side relative to the evaporator, a second fan disposed at one lateral side relative to the condenser, and a control unit for controlling the operation of the closed-loop refrigeration cycle, the first fan and the second fan.
  • the housing comprises a transverse partition plate, an upper chamber and a lower chamber separated by the transverse partition plate, an upper damper pivotally mounted in the upper chamber, a lower damper pivotally mounted in the lower chamber, an indoor-facing outlet and an outdoor-facing outlet respectively located at opposing front side and back side of the upper chamber, an indoor-facing inlet and an outdoor-facing inlet respectively located at opposing front side and back side of the lower chamber.
  • the angular position of the upper damper and the angular position of the lower damper are adjustable to define a cold air passage and a hot air passage separately in the housing.
  • the evaporator and the first fan are disposed in the cold air passage.
  • the condenser and the second fan are disposed in the hot air passage.
  • the cold air passage and the hot air passage each define an air inlet end and an air outlet end.
  • the upper chamber comprises an outlet door controllable by the control unit to close/open the outdoor-facing outlet.
  • the lower chamber comprises an inlet door controllable by the control unit to close/open the outdoor-facing inlet.
  • the upper damper and the lower damper are respectively disposed perpendicular to the outdoor-facing outlet and the outdoor-facing inlet.
  • the air inlet ends of the cold air passage and the hot air passage are connected to the indoor-facing inlet of the lower chamber.
  • the air outlet ends of the cold air passage and the hot air passage are connected to the indoor-facing outlet of the upper chamber.
  • the evaporator and the condenser are respectively disposed in the lower chamber at two opposite sides.
  • the first fan and the second fan are respectively disposed above the evaporator and the condenser.
  • the first fan and the second fan are respectively disposed in the upper chamber at two opposite sides for drawing cold air or hot air into the upper chamber.
  • the invention greatly reduces the rate of mechanical damage, simplifies the structure of the heat pump air conditioner, improves the shortages, lowers the product manufacturing cost, and enhances the competitiveness of the product.
  • FIG. 1 is a schematic drawing illustrating the functioning of a conventional heat pump type air conditioner with cooling and heating functions.
  • FIG. 2 is a schematic drawing illustrating the energy conversion of a heat pump type air conditioner with cooling and heating functions.
  • FIG. 3 is a schematic perspective structural view of the variable-damper multi-function heat pump air conditioner in accordance with the present invention.
  • FIG. 4 a is a schematic plain view of the present invention, illustrating the status of the lower chamber of the variable-damper multi-function heat pump air conditioner during the operation mode of cooling function in hot weather.
  • FIG. 5 a is a schematic plain view of the present invention, illustrating the status of the lower chamber of the variable-damper multi-function heat pump air conditioner during the operation mode of heating function in cold weather.
  • FIG. 5 b is a schematic plain view of the present invention, illustrating the status of the upper chamber of the variable-damper multi-function heat pump air conditioner during the operation mode of heating function in cold weather.
  • FIG. 6 a is a schematic plain view of the present invention, illustrating the status of the lower chamber of the variable-damper multi-function heat pump air conditioner during the operation mode of indoor-air and outdoor-air exchanging with/without cooling function in hot weather.
  • FIG. 6 b is a schematic plain view of the present invention, illustrating the status of the upper chamber of the variable-damper multi-function heat pump air conditioner during the operation mode of indoor-air and outdoor-air exchanging with/without cooling function in hot weather.
  • FIG. 7 a is a schematic plain view of the present invention, illustrating the status of the lower chamber of the variable-damper multi-function heat pump air conditioner during the operation mode of indoor-air and outdoor-air exchanging with/without heating function in cold weather.
  • FIG. 7 b is a schematic plain view of the present invention, illustrating the status of the upper chamber of the variable-damper multi-function heat pump air conditioner during the operation mode of indoor-air and outdoor-air exchanging with/without heating function in cold weather.
  • FIG. 8 a is a schematic plain view of the present invention, illustrating the status of the lower chamber of the variable-damper multi-function heat pump air conditioner during the operation mode of one-fan-operation-only energy-saving quiet indoor-air and outdoor-air exchanging function.
  • FIG. 8 b is a schematic plain view of the present invention, illustrating the status of the upper chamber of the variable-damper multi-function heat pump air conditioner during the operation mode of one-fan-operation-only energy-saving quiet indoor-air and outdoor-air exchanging function.
  • FIG. 9 a is a schematic plain view of the present invention, illustrating the status of the lower chamber of the variable-damper multi-function heat pump air conditioner during the operation mode of dehumidifying with heating function in cold and humid weather.
  • FIG. 9 b is a schematic plain view of the present invention, illustrating the status of the upper chamber of the variable-damper multi-function heat pump air conditioner during the operation mode of dehumidifying with heating function in cold and humid weather.
  • variable-damper multi-function heat pump air conditioner in accordance with the present invention is shown, comprising a housing 1 and an air-conditioning system 2 .
  • the housing 1 comprises a transverse partition plate 11 , an upper chamber 12 and a lower chamber 13 separated by the transverse partition plate 11 , an upper damper 14 pivotally mounted in the middle of the upper chamber 12 , a lower damper 15 pivotally mounted in the middle of the lower chamber 13 , an upper motor 141 adapted to rotate the upper damper 14 , a lower motor 151 adapted to rotate the lower damper 15 , two vertical partition plates 142 disposed in the upper chamber 12 at two opposite sides relative to the upper damper 14 , each vertical partition plate 142 defining an opening 143 , an indoor-facing outlet 121 and an outdoor-facing outlet 122 (see also FIG.
  • the air-conditioning system 2 is mounted in the housing 1 , comprising a closed-loop refrigeration cycle formed of an evaporator 21 , an expansion device (not shown), a condenser 22 and a compressor 23 , a first fan 25 disposed at one lateral side relative to the evaporator 21 , a second fan 26 disposed at one lateral side relative to the condenser 22 , and a control unit 24 that controls all designed air conditioning functions.
  • the evaporator 21 and the condenser 22 are respectively mounted in the lower chamber 13 at two opposite sides relative to the lower damper 15 .
  • the evaporator 21 and the first fan 25 are disposed in the cold air passage 3 ; the condenser 22 and the second fan 26 are disposed in the hot air passage 4 .
  • the cold air passage 3 has its one end defined as an air inlet end 31 , and its other end defined as an air outlet end 32 .
  • the hot air passage 4 has its one end defined as an air inlet end 41 , and its other end defined as an air outlet end 42 .
  • the heat radiating area of the condenser 22 is preferably about 1 . 21 . 3 of the heat radiating area of the evaporator 21 .
  • variable-damper multi-function heat pump air conditioner can be operated in one of the following modes subject to different weather conditions and purposes:
  • the compressor 23 , the first fan 25 and the second fan 26 are started up, and the upper damper 14 and the lower damper 15 are respectively biased to the position shown in FIG. 4 b and the position shown in FIG. 4 a .
  • the air inlet end 31 of the cold air passage 3 is connected to the indoor-facing inlet 131 ;
  • the air inlet end 41 of the hot air passage 4 is connected to the outdoor-facing inlet 132 ;
  • the air outlet end 32 of the cold air passage 3 is connected to the indoor-facing outlet 121 ;
  • the air outlet end 42 of the hot air passage 4 is connected to the outdoor-facing outlet 122 .
  • the condenser 22 is in the status of high temperature, and the evaporator 21 is in the status of low temperature.
  • the operation of the first fan 25 enables indoor air to be sucked into the indoor-facing inlet 131 of the lower chamber 13 and cooled down by the evaporator 21 , and then the cold air processed through the evaporator 21 is delivered into the indoor space through the indoor-facing outlet 121 of the upper chamber 12 (i.e., the cold air passage 3 ).
  • the operation of the second fan 26 enables outside air to be sucked into the outdoor-facing inlet 132 of the lower chamber 13 and heated by the condenser 22 , and then the hot air processed through the condenser 22 is delivered into the outdoor space through the outdoor-facing outlet 122 of the upper chamber 12 (i.e., the hot air passage 4 ), and thus cold air is being continuously provided to the indoor space.
  • the compressor 23 , the first fan 25 and the second fan 26 are started up, and the upper damper 14 and the lower damper 15 are respectively biased to the position shown in FIG. 5 b and the position shown in FIG. 5 a .
  • the air inlet end 31 of the cold air passage 3 is connected to the outdoor-facing inlet 132 ;
  • the air inlet end 41 of the hot air passage 4 is connected to the indoor-facing inlet 131 ;
  • the air outlet end 32 of the cold air passage 3 is connected to the outdoor-facing outlet 122 ;
  • the air outlet end 42 of the hot air passage 4 is connected to the indoor-facing outlet 121 .
  • the condenser 22 is in the status of high temperature, and the evaporator 21 is in the status of low temperature.
  • the operation of the second fan 26 enables indoor air to be sucked into the indoor-facing inlet 131 of the lower chamber 13 and heated by the condenser 22 , and then the hot air processed through the condenser 22 is delivered into the indoor space through the indoor-facing outlet 121 of the upper chamber 12 (i.e., the hot air passage 4 ).
  • the operation of the first fan 25 enables outside air to be sucked into the outdoor-facing inlet 132 of the lower chamber 13 and cooled down by the evaporator 21 , and then the cold air processed through the evaporator 21 is delivered into the outdoor space through the outdoor-facing outlet 122 of the upper chamber 12 (i.e., the cold air passage 3 ), and thus hot air is being continuously provided to the indoor space.
  • indoor-air and outdoor-air exchanging In order to maintain indoor air quality during an air conditioning operation to provide cold air to the indoor space in hot weather, indoor-air and outdoor-air exchanging must be periodically performed. Subject to the control of the control unit 24 under this operation mode, the compressor 23 , the first fan 25 and the second fan 26 are started up, and the upper damper 14 and the lower damper 15 are respectively biased to the position shown in FIG. 6 b and the position shown in FIG. 6 a .
  • the air inlet end 31 of the cold air passage 3 is connected to the outdoor-facing inlet 132 ; the air inlet end 41 of the hot air passage 4 is connected to the indoor-facing inlet 131 ; the air outlet end 32 of the cold air passage 3 is connected to the indoor-facing outlet 121 ; the air outlet end 42 of the hot air passage 4 is connected to the outdoor-facing outlet 122 .
  • the condenser 22 is in the status of high temperature, and the evaporator 21 is in the status of low temperature.
  • the operation of the first fan 25 enables outdoor air to be sucked into the outdoor-facing inlet 132 of the lower chamber 13 and cooled down by the evaporator 21 , and then the cold air processed through the evaporator 21 is delivered into the indoor space through the indoor-facing outlet 121 of the upper chamber 12 (i.e., the cold air passage 3 ).
  • the operation of the second fan 26 enables indoor air to be sucked into the indoor-facing inlet 131 of the lower chamber 13 and heated by the condenser 22 , and then the hot air processed through the condenser 22 is delivered into the outdoor space through the outdoor-facing outlet 122 of the upper chamber 12 (i.e., the hot air passage 4 ), and thus an indoor-air and outdoor-air exchanging is performed when cold air is being continuously provided to the indoor space.
  • the outdoor temperature is in the pleasant temperature range about 20 ⁇ 25oC.
  • the control unit 24 can be controlled to stop the compressor 23 , interrupting the refrigeration cycle and saving energy consumption.
  • only the first fan 25 and the second fan 26 are in operation, enabling outdoor fresh air to be guided into the indoor space and indoor foul air to be discharged out of the indoor space, achieving indoor-air and outdoor-air exchanging and improving indoor air quality.
  • indoor-air and outdoor-air exchanging In order to maintain indoor air quality during an air conditioning operation to provide hot air to the indoor space in cold weather, indoor-air and outdoor-air exchanging must be periodically performed. Subject to the control of the control unit 24 under this operation mode, the compressor 23 , the first fan 25 and the second fan 26 are started up, and the upper damper 14 and the lower damper 15 are respectively biased to the position shown in FIG. 7 b and the position shown in FIG. 7 a .
  • the air inlet end 31 of the cold air passage 3 is connected to the indoor-facing inlet 131 ; the air inlet end 41 of the hot air passage 4 is connected to the outdoor-facing inlet 132 ; the air outlet end 32 of the cold air passage 3 is connected to the outdoor-facing outlet 122 ; the air outlet end 42 of the hot air passage 4 is connected to the indoor-facing outlet 121 .
  • the condenser 22 is in the status of high temperature, and the evaporator 21 is in the status of low temperature.
  • the operation of the second fan 26 enables outdoor air to be sucked into the outdoor-facing inlet 132 of the lower chamber 13 and heated by the condenser 22 , and then the hot air processed through the condenser 22 is delivered into the indoor space through the indoor-facing outlet 121 of the upper chamber 12 (i.e., the hot air passage 4 ).
  • the operation of the first fan 25 enables indoor air to be sucked into the indoor-facing inlet 131 of the lower chamber 13 and cooled down by the evaporator 21 , and then the cold air processed through the evaporator 21 is delivered into the outdoor space through the outdoor-facing outlet 122 of the upper chamber 12 (i.e., the cold air passage 3 ), and thus an indoor-air and outdoor-air exchanging is performed when hot air is being continuously provided to the indoor space.
  • the outdoor temperature is in the pleasant temperature range about 20 ⁇ 25oC.
  • the control unit 24 can be controlled to stop the compressor 23 , interrupting the refrigeration cycle and saving energy consumption.
  • only the first fan 25 and the second fan 26 are in operation, enabling outdoor fresh air to be guided into the indoor space and indoor foul air to be discharged out of the indoor space, achieving indoor-air and outdoor-air exchanging and improving indoor air quality.
  • the refrigeration cycle can be stopped, and only one single fan is operated to draw outdoor fresh air into the indoor space, achieving an energy-saving and quiet air-conditioning function.
  • the compressor 23 and the first fan 25 are turned off, and the second fan 26 is in operation, and the upper damper 14 and the lower damper 15 are respectively biased to the position shown in FIG. 8 b and the position shown in FIG. 8 a .
  • the air inlet end 41 of the hot air passage 4 is connected to the outdoor-facing inlet 132 ; the air outlet end 42 of the hot air passage 4 is connected to the indoor-facing outlet 121 .
  • the compressor 23 and the first fan 25 are turned off, and only the second fan 26 is in operation, enabling outdoor fresh air to be sucked into the indoor space through the indoor-facing outlet 121 of the upper chamber 12 (hot air passage 4 ). Because only one single fan is in operation, energy consumption and fan noise level are reduced. This operation mode is suitable for application in the midnight as the temperature decreases and quiet air conditioning is requested.
  • the indoor space is maintained under positive pressure, and therefore, only indoor air can flow toward the outdoor space through gaps in the windows subject to the pressure difference between indoors and outdoors. Further, the use of filters can stop insects and dust from entering the indoor space. Thus, due to the effect of the indoor positive pressure, the indoor air is maintained clean.
  • an outlet door 123 is provided at the outdoor-facing outlet 122 of the upper chamber 12 , as shown in FIG. 9 b
  • an inlet door 133 is provided at the outdoor-facing inlet 132 of the lower chamber 13 , as shown in FIG. 9 a .
  • the control unit 24 can be controlled to drive the outlet door 123 and the inlet door 133 to close the outdoor-facing outlet 122 of the upper chamber 12 and the outdoor-facing inlet 132 of the lower chamber 13 respectively, and to bias the upper damper 14 and the lower damper 15 to the positions shown in FIGS.
  • the operation of the second fan 26 enables a part of indoor air to be sucked into the indoor-facing inlet 131 of the lower chamber 13 and heated by the condenser 22 and then delivered into the indoor space through the indoor-facing outlet 121 of the upper chamber 12
  • the first fan 25 enables another part of indoor air to be sucked into the indoor-facing inlet 131 of the lower chamber 13 and cooled down by the evaporator 21 and then delivered into the indoor space through the indoor-facing outlet 121 of the upper chamber 12 .
  • the part of indoor air going through the cold air passage 3 is dehumidified by the evaporator 21
  • the part of indoor air going through the hot air passage 4 is heated by the condenser 22 . Because the thermal energy of hot air increased is greater than the thermal energy of cold air reduced (the difference is the work of the compressor), the function of dehumidifying with heating function in cold and humid weather is achieved.
  • the control unit 24 can be operated to control the angular position of the upper damper 14 and the angular position of the lower damper 15 , and to run under the mode of cooling function in hot weather, the mode of heating function in cold weather, the mode of indoor-air and outdoor-air exchanging with/without cooling function in hot weather, the mode of indoor-air and outdoor-air exchanging with/without heating function in cold weather, the mode of one-fan-operation-only energy-saving quiet indoor-air and outdoor-air exchanging function, or the mode of dehumidifying with heating function in cold and humid weather, improving the drawbacks of conventional four-way valve designs.
  • the invention greatly reduces the rate of mechanical damage, simplifies the structure of the hot pump air conditioner, improves the shortages, lowers the product manufacturing cost, and enhances the competitiveness of the product.
  • the invention provides a variable-damper multi-function heat pump air conditioner, which involves an inventive step and effectively eliminates the drawbacks of conventional four-way valve type hot/cold dual-function air conditioners.

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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)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
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TW101133057 2012-09-10
TW101133057A TW201411073A (zh) 2012-09-10 2012-09-10 可變風門之多功能熱泵式空調機

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Publication number Priority date Publication date Assignee Title
US20160047559A1 (en) * 2014-08-18 2016-02-18 Kurt M. Swanson Compact air conditioning and fan system
US20180147911A1 (en) * 2015-05-11 2018-05-31 Hanon Systems Air conditioning system
US20180335222A1 (en) * 2016-01-28 2018-11-22 Hisense Kelon Electrical Holdings Co., Ltd. Air conditioner indoor unit
JP2022092790A (ja) * 2020-12-11 2022-06-23 三菱重工冷熱株式会社 スポットエアコン

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