EP2148147B1 - Method of controlling air conditioner - Google Patents

Method of controlling air conditioner Download PDF

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Publication number
EP2148147B1
EP2148147B1 EP08020401.9A EP08020401A EP2148147B1 EP 2148147 B1 EP2148147 B1 EP 2148147B1 EP 08020401 A EP08020401 A EP 08020401A EP 2148147 B1 EP2148147 B1 EP 2148147B1
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EP
European Patent Office
Prior art keywords
temperature
indoor
humidity
indoor humidity
predetermined time
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.)
Expired - Fee Related
Application number
EP08020401.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2148147A2 (en
EP2148147A3 (en
Inventor
Sung Goo Kim
Kyung Rae Cho
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of EP2148147A2 publication Critical patent/EP2148147A2/en
Publication of EP2148147A3 publication Critical patent/EP2148147A3/en
Application granted granted Critical
Publication of EP2148147B1 publication Critical patent/EP2148147B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F24F3/12—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 treatment of the air otherwise than by heating and cooling
    • F24F3/14—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 treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52—Indication arrangements, e.g. displays
    • F24F11/523—Indication arrangements, e.g. displays for displaying temperature data
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • 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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • 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
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • 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
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • 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
    • F24F3/12—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 treatment of the air otherwise than by heating and cooling
    • F24F3/14—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 treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/144—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 treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • 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
    • F25B2313/029—Control issues
    • F25B2313/0293—Control issues related to the indoor fan, e.g. controlling speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0251—Compressor control by controlling speed with on-off operation

Definitions

  • the present invention relates to a method of controlling an air conditioner, and more particularly to a method of controlling a dehumidifying operation of an air conditioner.
  • air conditioners basically perform a cooling operation in an air-conditioning space, and further perform a dehumidifying operation, in which the humidity in the air-conditioning space is lowered.
  • the dehumidifying operation of the air conditioner is performed in a similar method as that of the cooling operation. That is, a refrigerant is circulated through a refrigerating cycle including a compressor, an outdoor heat exchanger (condenser), an expansion device, and an indoor heat exchanger (evaporator), and thus cools air in an air-conditioning space.
  • a refrigerant is circulated through a refrigerating cycle including a compressor, an outdoor heat exchanger (condenser), an expansion device, and an indoor heat exchanger (evaporator), and thus cools air in an air-conditioning space.
  • two loads i.e., a sensible heat load and a latent heat load, are removed.
  • US 2006/260334 A1 discloses a thermostat and method for operating in either a normal or dehumidification mode, according to the preamble of claim 1. There is a comparison of indoor humidity with a reference indoor humidity. In case the indoor humidity is higher than the corresponding reference indoor humidity, there will be a dehumidifying operation until the temperature is lower than a particular set temperature. In case the indoor humidity is lower than the reference indoor humidity, a dehumidifying operation will be performed until the corresponding temperature is lower than the set temperature as well. The corresponding dehumidifying operation is also performed as long as the temperature is below a temperature of about three to eight degrees higher than the set temperature.
  • it is an object of the invention is to provide a method of controlling a dehumidifying operation of an air conditioner, according to which temperature and humidity are optimally maintained.
  • the method may further include stopping the operations of a compressor and an indoor fan for a first predetermined time when any one condition, among a condition that the indoor humidity is higher than the reference indoor humidity and an indoor temperature is not higher than the first temperature and a condition that the indoor humidity is not higher than the reference indoor humidity and the indoor temperature is not higher than the second temperature, is satisfied.
  • the method may further include determining whether or not the dehumidifying operation is required by observing the indoor humidity and the indoor temperature for the first predetermined time; and re-operating the compressor and the indoor fan, when it is determined that the dehumidifying operation is required.
  • the method may further include operating the indoor fan for a second predetermined time, when the first predetermined time has elapsed, to circulate indoor air.
  • the operation of the indoor fan may be carried out by rotating the indoor fan at a speed lower than the rotation speed of the indoor fan in the dehumidifying operation.
  • the method may further include determining whether or not the dehumidifying operation is required by detecting the temperature and humidity of the circulated indoor air for the second predetermined time; and re-operating the compressor, when it is determined that the dehumidifying operation is required.
  • the method may further include rotating the indoor fan at a speed required by the dehumidifying operation together with the re-operation of the compressor.
  • the first temperature may be set to the lower temperature limit of a temperature range, at which the mean skin temperature of a man is uniformly maintained at the reference indoor humidity; and the second temperature may be set to the upper temperature limit of the temperature range, at which the mean skin temperature of a man is uniformly maintained at the reference indoor humidity
  • the method may also include inputting a user's desired reference indoor humidity from a user; determining an allowable temperature range corresponding to the reference indoor humidity; detecting an indoor humidity; wherein a lower temperature limit of the allowable temperature range is set as the first temperature and an upper temperature limit of the allowable temperature range is set as the second temperature.
  • the allowable temperature range may be a temperature range, at which the mean skin temperature of a man is uniformly maintained at the reference indoor humidity inputted by the user.
  • the method may further include stopping the operations of a compressor and an indoor fan for a first predetermined time when any one condition, among a condition that the indoor humidity is higher than the reference indoor humidity and an indoor temperature is not higher than the lower temperature limit of the allowable temperature range and a condition that the indoor humidity is not higher than the reference indoor humidity and the indoor temperature is not higher than the upper temperature limit of the allowable temperature range, is satisfied.
  • the method may further include the indoor fan for a second predetermined time, when the first predetermined time has elapsed, to circulate indoor air.
  • the method may also include inputting a user's desired reference indoor humidity from a user; and inputting a user's desired reference temperature range from the user; a lower temperature limit of the reference temperature range is set at the first temperature and an upper temperature limit of the reference temperature range is set as the second temperature.
  • the method may further include stopping the operations of a compressor and an indoor fan for a first predetermined time when any one condition, among a condition that the indoor humidity is higher than the reference indoor humidity and an indoor temperature is not higher than the lower temperature limit of the reference temperature range and a condition that the indoor humidity is not higher than the reference indoor humidity and the indoor temperature is not higher than the upper temperature limit of the reference temperature range, is satisfied.
  • the method may further include operating the indoor fan for a second predetermined time, when the first predetermined time has elapsed, to circulate indoor air.
  • Humidity which is controlled by the dehumidifying operation of an air conditioner, is relative humidity, and the relative humidity is defined as the proportion of the amount of current steam to the amount of saturated steam at the current temperature. It is known that the proper range of the relative humidity, which is proper for a man to live, is approximately 40% to approximately 60%. Therefore, under the same relative humidity, temperatures may be different.
  • a dehumidifying operation is performed in consideration of both temperature and humidity, and thus temperature and humidity are maintained optimally.
  • FIG. 1 is a view illustrating a refrigerating cycle of an air conditioner in accordance with one embodiment of the present invention.
  • an air conditioner 100 in accordance with one embodiment of the present invention includes an outdoor unit 102 and an indoor unit 104, which are connected by a liquid refrigerant pipe 106a and a gas refrigerant pipe 106b to form one refrigerating cycle.
  • a compressor 108 provided in the outdoor unit 102 compresses a refrigerant into a high-temperature and high-pressure gas state.
  • An outdoor heat exchanger 110 receives the high-temperature and high-pressure gas refrigerant discharged from the compressor 108, and exchanges heat between the gas refrigerant and outdoor air.
  • An outdoor fan 112 forcibly blows the outdoor air such that the outdoor heat exchanger (condenser) 110 exchanges heat between the gas refrigerant and the outdoor air.
  • the high-temperature and high-pressure refrigerant of the outdoor unit 102 is expanded (decompressed) by an expansion device 114, and is supplied to the indoor unit 104.
  • An outdoor temperature sensor 115 is installed on the outdoor unit 102, and detects an outdoor temperature.
  • An indoor heat exchanger (evaporator) 116 is installed in the indoor unit 104.
  • An indoor fan 118 forcibly blows indoor air to the indoor heat exchanger 116 such that the indoor heat exchanger 116 exchanges heat between the refrigerant of the indoor heat exchanger 116 and the indoor air.
  • An indoor temperature sensor 120 and an indoor humidity sensor 122 are installed at a portion of the indoor unit 104, through which indoor air is sucked to the indoor unit 104.
  • the indoor temperature sensor 120 detects a temperature in an air-conditioning space, i.e., a temperature of air flowing from the air-conditioning space into the indoor unit 104.
  • the indoor humidity sensor 122 detects a humidity in the air-conditioning space, i.e., a relative humidity in the air flowing from the air-conditioning space into the indoor unit 104.
  • FIG. 2 is a block diagram illustrating a control system of the air conditioner of FIG. 1 .
  • a control unit 202 of the outdoor unit 102 uses the outdoor temperature, supplied from the outdoor temperature sensor 115 connected to an input side of the control unit 202, in a cooling operation.
  • a storing unit 204 communicably connected to the control unit 202 stores a system software required to control the overall operation of the air conditioner 100 through the control unit 202.
  • a reference indoor humidity (for example, 50%) and reference temperatures, i.e., a first temperature (for example, 22 °C) and a second temperature (for example, 26 °C) required to perform a dehumidifying operation are stored in the storing unit 204.
  • the outdoor fan 112 and the compressor 108 are connected to an output side of the control unit 202.
  • a display unit 206 and an input unit 208 are provided in the indoor unit 104.
  • the display unit 206 displays operating state data of the air conditioner 100, a user's input demand message, or etc.
  • the input unit 208 allows a user living in the air-conditioning space to generate an operation instruction or to set (input) a predetermined value.
  • the instruction or the predetermined value inputted through the input unit 208 of the indoor unit 104 is transmitted to the control unit 202 of the outdoor unit 102.
  • FIG. 3 is a flow chart illustrating a method of controlling an air conditioner in accordance with one embodiment of the present invention.
  • the control unit 202 receives a dehumidifying operation instruction through the input unit 208 of the indoor unit 104, the control unit 202 operates the compressor 108 and the indoor fan 118 to perform the dehumidifying operation (operation 302).
  • the indoor fan 112 is operated also to perform the operation of the outdoor unit 102.
  • the control unit 202 starts the dehumidifying operation, and initializes a thermo-off time (t_off) (operation 304).
  • t_off thermo-off time
  • thermo-off time (t_off) is a time, for which the operation of the compressor 108 is stopped when any one of the humidity and the temperature reaches a desired level due to the dehumidifying operation.
  • the control unit 202 operates the compressor 108 and the indoor fan 118 so as to lower the humidity of the air-conditioning space to the reference indoor humidity (for example, 50%) or less, and thus cools the air-conditioning space (operation 306).
  • the humidity of the air-conditioning space does not satisfy the reference indoor humidity, i.e., is higher than the reference indoor humidity (for example, 50%) (no at operation 306)
  • the indoor temperature of the air-conditioning space does not satisfy one reference temperature, i.e., is higher than the first reference temperature (for example, 22 °C) (no at operation 308)
  • the compressor 108 and the indoor fan 118 are continuously operated to further perform the dehumidifying operation, and thus further lowers the humidity and the temperature of the air-conditioning space.
  • the humidity of the air-conditioning space is still higher than the reference indoor humidity (for example, 50%) (no at operation 306)
  • the temperature of the air-conditioning space is not higher than the first temperature (22 °C), which is the lower temperature limit of the reference temperature range (yes at operation 308)
  • the compressor 108 and the indoor fan 118 are stopped to prevent the indoor temperature of the air-conditioning space from being lowered under the first temperature (22 °C) although the indoor humidity of the air-conditioning space does not satisfy the target reference indoor humidity (thermo-off, operation 312).
  • the thermo-off time (t_off) is counted from this moment.
  • the humidity of the air-conditioning space satisfies the reference indoor humidity, i.e., is not higher than the reference indoor humidity (for example, 50%) (yes at operation 306)
  • the temperature of the air-conditioning space is higher than another reference temperature, i.e., the second temperature (26 °C) (no at operation 310)
  • the compressor 108 and the indoor fan 118 are further operated although the indoor humidity of the air-conditioning space satisfies the reference indoor humidity, and thus further lowers the temperature of the air-conditioning space.
  • the dehumidifying operation is continued such that the indoor temperature is not higher than the second temperature (26 °C), which is the upper temperature limit of the reference temperature range, although the humidity is slightly lower than 50%.
  • the control unit 202 determines that the air-conditioning space is in an optimal state and stops the compressor 108 and the indoor fan 118 (thermo-off, operation 312). When the compressor 108 and the indoor fan 118 are stopped, the thermo-off time (t_off) is counted from this moment.
  • the target indoor temperature is maximally lowered to the lower temperature limit (for example 22 °C) of the allowable temperature range, but is not lowered under the lower temperature limit. Further, although the indoor humidity satisfies the reference indoor humidity, the indoor temperature is not raised above the upper temperature limit (for example 26 °C) of the allowable temperature range,
  • thermo-off time (t_off) is counted, and it is monitored whether or not the indoor humidity and the indoor temperature are deviated from the target indoor humidity and the target indoor temperature under the condition that the compressor 108 and the indoor fan 118 are stopped for a first predetermined time (t1) to the maximum (operation 314).
  • thermo-off time (t_off) does not elapse the first predetermined time (t1) (no at operation 314)
  • the indoor humidity satisfies the reference indoor humidity and the indoor temperature exceeds the second temperature, i.e., the upper temperature limit of the allowable temperature range, (no at operation 310) or the indoor humidity does not satisfy the reference indoor humidity and the indoor temperature exceeds the first temperature, i.e., the lower temperature limit of the allowable temperature range, (no at operation 308)
  • the dehumidifying operation in operations 302 and 304 is repeated.
  • the stoppage of the compressor 108 and the indoor fan 118 for the first predetermined time (t1) after the thermo-off serves to prevent the rise of the humidity caused by the supply of moisture formed around the indoor heat exchanger 116 to the air-conditioning space due to the operation of the indoor fan 118.
  • the indoor humidity satisfies the reference indoor humidity and the indoor temperature is not higher than the second temperature, i.e., the upper temperature limit of the allowable temperature range, (yes at operation 310) or the indoor humidity does not satisfy the reference indoor humidity and the indoor temperature is not higher than the first temperature, i.e., the lower temperature limit of the allowable temperature range, (yes at operation 308) until the thermo-off time (t_off) elapses the first predetermined time (t1), only the indoor fan 116 is operated at a speed lower than the rotation speed in the dehumidifying operation for a second predetermined time (t2) to the maximum under the condition that the compressor 108 is still stopped (operation 316).
  • the thermo-off time t_off
  • thermo-off time (t_off) does not elapse the sum of the first predetermined time (t1) and second predetermined time (t2) (no at operation 318)
  • the dehumidifying operation in operations 302 and 304 is repeated again.
  • the operation of the indoor fan 118 at a low speed for the second predetermined time (t2) serves to cause the indoor air to be circulated through the indoor unit 104 such that the indoor humidity and the indoor temperature can be more exactly detected.
  • thermo-off time (t_off) elapses the sum of the first predetermined time (t1) and second predetermined time (t2) (no at operation 320)
  • the indoor fan 118 is stopped (operation 322), and the dehumidifying operation in operations 306, 308, and 310 is repeated, if necessary.
  • the control unit 202 receives the dehumidifying operation stopping instruction (yes at operation 320), the dehumidifying operation is finished.
  • FIG. 4 is a flow chart illustrating a method of controlling an air conditioner in accordance with another embodiment of the present invention.
  • the control unit 202 receives a dehumidifying operation instruction through the input unit 208 of the indoor unit 104 (operation 402)
  • receives a reference indoor humidity i.e., a user's desired indoor humidity, from a user (operation 404).
  • the receipt of the reference indoor humidity is carried out by inquiring a desired indoor humidity through the display unit 206 of the indoor unit 104 and inducing the user to input the desired indoor humidity through the input unit 208.
  • the control unit 202 determines an allowable temperature range corresponding to the reference indoor humidity, i.e., the upper temperature limit and the lower temperature limit (operation 406).
  • the control unit 202 determines that a mean skin temperature (MST) range where a user feels comfortable at the reference indoor humidity becomes the allowable temperature range. That is, the storing unit 404 of the outdoor unit 102 stores in advance data regarding the MST range where the user feels comfortable according to the reference indoor humidity, and the control unit 202 determines the allowable temperature range in the dehumidifying operation with reference to the data stored in the storing unit 204.
  • MST mean skin temperature
  • the first temperature is the lower temperature limit of 22.1°C and the second temperature is the upper temperature limit of 29.4°C.
  • the control unit 202 sets the lower temperature limit of the MST range to be the first temperature and the upper temperature limit of the MST range to be the second temperature (operation 408).
  • the first temperature and the second temperature respectively correspond to the first temperature and the second temperature, which are used in operation 308 and operation 310 of FIG 3 . That is, the control unit 202 applies the reference indoor temperature received from the user and the target temperature range (the first and second temperatures) determined corresponding to the reference indoor temperature to the method of FIG. 3 , and thus the method of controlling the dehumidifying operation of the air conditioner in accordance with this embodiment is performed (operation 410). Since the reference indoor humidity is received directly from the user and the dehumidifying operation of the air conditioner is performed to follow the reference indoor humidity, a humidity condition required by the user is completely embodied and supplied to the user.
  • FIG. 5 is a flow chart illustrating a method of controlling an air conditioner in accordance with a further embodiment of the present invention.
  • the control unit 202 receives a dehumidifying operation instruction through the input unit 208 of the indoor unit 104 (operation 502)
  • receives a reference indoor humidity i.e., a user's desired indoor humidity
  • receives an allowable temperature range i.e., a user's desired reference temperature range, from the user (operation 506).
  • the receipt of the reference indoor humidity and the reference temperature range is carried out by inquiring a desired indoor humidity and a desired indoor temperature range through the display unit 206 of the indoor unit 104 and inducing the user to input the desired indoor humidity and the desired indoor temperature range through the input unit 208.
  • the control unit 202 sets the lower temperature limit of the reference temperature range to be the first temperature and the upper temperature limit of the reference temperature range to be the second temperature (operation 508).
  • the first temperature and the second temperature respectively correspond to the first temperature and the second temperature, which are used in operation 308 and operation 310 of FIG. 3 . That is, the control unit 202 applies the reference indoor humidity received from the user and the reference temperature range (the first and second temperatures) determined corresponding to the reference indoor humidity to the method of FIG. 3 , and thus the method of controlling the dehumidifying operation of the air conditioner in accordance with this embodiment is performed (operation 510). Since the reference indoor humidity and the reference temperature range are received directly from the user and the dehumidifying operation of the air conditioner is performed to follow the reference indoor humidity and the reference indoor temperature, humidity and temperature conditions required by the user are completely embodied and supplied to the user.

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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)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)
EP08020401.9A 2008-07-22 2008-11-24 Method of controlling air conditioner Expired - Fee Related EP2148147B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020080071133A KR101502096B1 (ko) 2008-07-22 2008-07-22 공기 조화기의 제어 방법

Publications (3)

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EP2148147A2 EP2148147A2 (en) 2010-01-27
EP2148147A3 EP2148147A3 (en) 2014-06-25
EP2148147B1 true EP2148147B1 (en) 2018-05-02

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EP (1) EP2148147B1 (zh)
KR (1) KR101502096B1 (zh)
CN (1) CN101634479B (zh)
ES (1) ES2679124T3 (zh)

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CN102679490B (zh) * 2011-03-15 2014-06-11 珠海格力电器股份有限公司 空调器低温工况下除湿模式控制方法
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CN101634479B (zh) 2013-10-30
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EP2148147A2 (en) 2010-01-27
CN101634479A (zh) 2010-01-27
EP2148147A3 (en) 2014-06-25
KR101502096B1 (ko) 2015-03-12

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