WO2010095238A1 - 利用側ユニット及び空気調和装置 - Google Patents
利用側ユニット及び空気調和装置 Download PDFInfo
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- WO2010095238A1 WO2010095238A1 PCT/JP2009/052947 JP2009052947W WO2010095238A1 WO 2010095238 A1 WO2010095238 A1 WO 2010095238A1 JP 2009052947 W JP2009052947 W JP 2009052947W WO 2010095238 A1 WO2010095238 A1 WO 2010095238A1
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- 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
- F24F3/153—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 with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature
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- 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
- F24F11/0008—Control or safety arrangements for air-humidification
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- 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
- F24F11/46—Improving electric energy efficiency or saving
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- 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
- F24F11/56—Remote control
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- 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
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- 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
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- 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
- F24F11/84—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 using valves
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- 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
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- 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
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- 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
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- 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
- F24F2003/1446—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 by condensing
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- 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
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- 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
Definitions
- the present invention relates to a use-side unit and an air conditioner for performing air conditioning by a reheating method so that a target space for air conditioning or the like is set to a set temperature and humidity, for example.
- a heat source side unit (outdoor unit) having a compressor and an outdoor heat exchanger (heat source side heat exchanger), an expansion device serving as an expansion valve, and a use side heat exchanger (load side heat exchanger)
- a refrigerant circuit is configured by connecting a user side unit (indoor unit) having Then, a fluid such as a refrigerant serving as a heat transfer medium is circulated to exchange heat with air in a target space to be air-conditioned and ventilated (hereinafter referred to as a target space such as air-conditioner) in an indoor unit, and the temperature of the target space such as air-conditioner Is adjusted.
- temperature is the dry bulb temperature.
- temperature value and data are also referred to as temperature
- humidity unless otherwise specified, The humidity is assumed to be relative humidity, and the humidity value and data may also be referred to as humidity). For this reason, after the inhaled air is cooled to the dew point temperature related to the set humidity, dew condensation is performed, and the moisture is reduced, the air is heated again to a predetermined temperature, and then reheated (reheat) type air is sent to the target space such as an air conditioner.
- reheated (reheat) type air is sent to the target space such as an air conditioner.
- the use side unit in such an air conditioner functions as, for example, a heat exchanger functioning as an evaporator (hereinafter referred to as a use side evaporator) as a use side heat exchanger and a condenser as a reheat device.
- a heat exchanger hereinafter referred to as a use-side condenser.
- the use side condenser heats the air dehumidified by cooling so that the set humidity becomes the set humidity
- the use side condenser for example, heats the target space such that the target space such as the air conditioner becomes the set temperature, and targets the air conditioner etc. It sends out (spouts) into space. JP 2001-91097 A
- the dew point temperature is high due to the set humidity
- the air temperature on the secondary side (blowing, discharge side) of the use side evaporator is high, and the set temperature is low.
- the reheating device for example, (minimum heating amount of the reheating device)> (required heating amount obtained from the difference between the target temperature and the temperature of the air on the primary side (suction, suction side) of the use side condenser) It may become.
- air higher than the target temperature may be blown out (sent out) into the target space such as air-conditioning by heating the air of the reheating device.
- This invention was made in order to solve the above problems, and provides a use side unit and an air conditioner that can send air to a target space such as an air conditioner at a target temperature corresponding to a set temperature. Objective.
- the utilization side unit comprises an evaporator that collects moisture condensed by cooling air sent to a target space such as an air conditioner by heat exchange, and heats the air that has passed through the evaporator by heat exchange.
- the target intermediate dry bulb temperature which is the dry bulb temperature target of the air that has passed through, is determined, and it is determined that the difference between the dry bulb temperature related to the detection by the first temperature detector and the target dry bulb temperature is greater than a predetermined value.
- a control device that calculates a correction value based on the difference between the dry bulb temperature related to detection by the first temperature detector and the target dry bulb temperature and corrects the target intermediate dry bulb temperature based on the correction value Are provided.
- the target intermediate dry bulb temperature is calculated based on the calculated correction value. Is corrected so that the temperature of the air that has passed through the evaporator is lowered.For example, even if the minimum condensation capacity of the condenser is high, the temperature and humidity of the air sent to the target space such as air conditioning are set to the target temperature, Can be close to the target humidity.
- FIG. 3 is a diagram illustrating a configuration of a usage-side unit in Embodiment 1.
- FIG. It is a figure showing an example of the arrangement
- FIG. 3 is a diagram showing a flowchart showing control contents in the first embodiment. It is a figure which shows the relationship between the driving
- FIG. 11 is a diagram showing a flowchart showing control contents in the second embodiment. It is a figure showing the structural example of the air conditioning apparatus which concerns on Embodiment 3.
- 1 use side evaporator unit, 2 blower, 3 use side evaporator, 4 use side condenser, 5 evaporation side control device, 5A evaporation side processing means, 5B evaporation side storage means, 6 condensation side control device, 6A condensation side processing Means, 6B condensing side storage means, 7, 8 temperature detector, 9 humidity detector, 10 evaporating side adjusting valve, 11 condensing side adjusting valve, 12, 13 piping, 14 intake air, 15, 16 blowing air, 17 remote control, 18 use side condenser unit, 100 heat source side unit, 101 compressor, 102 oil separator, 103 heat source side condenser, 104 heat source side fan, 105 accumulator, 111 heat source side control device, 200 use side unit.
- FIG. 1 is a diagram showing a configuration of a use side unit of an air-conditioning apparatus according to Embodiment 1 of the present invention.
- the usage-side unit in FIG. 1 includes a usage-side evaporator unit 1, a usage-side condenser unit 18, and a remote controller (hereinafter referred to as a remote controller) 17.
- a remote controller hereinafter referred to as a remote controller 17.
- the blown air 15 sucked as the suction air 14 from the primary side by the use side evaporator unit 1 and blown out from the secondary side passes through the secondary side from the primary side of the use side condenser unit 18. It is blown out (sent out) as blown air 16 into a target space such as an air conditioner.
- the use side evaporator unit 1 of the present embodiment includes a blower 2, a use side evaporator 3, an evaporation side adjustment valve 10, and an evaporation side control device 5.
- the blower 2 is for forming a flow of air for adjusting the humidity and temperature of the inhaled air and blowing it out to a target space such as an air conditioner.
- the blower 2 causes the primary side of the usage side evaporator unit 1 (use side evaporator 3) to the secondary side of the usage side evaporator unit 1 (use side evaporator 3) (use side condenser unit 18).
- Primary side of the use side condenser 4 ⁇ The air flow of the secondary side of the use side condenser unit 18 (use side condenser 4) can be made.
- the use side evaporator 3 performs heat exchange between a heat transfer medium (fluid) such as a refrigerant flowing through the pipe 12 and air flowing from the primary side of the use side evaporator unit 1. This cools the air flowing in from the primary side, condenses and collects moisture in the air, performs dehumidification, and flows out from the secondary side.
- the evaporation side adjusting valve 10 is a valve for adjusting the evaporation capacity in the usage side evaporator 3 by adjusting the flow rate and pressure of the fluid flowing through the usage side evaporator 3 by changing the opening degree. In the present embodiment, it is assumed that the valve is an electric valve that can electrically adjust the opening degree by driving a motor by passing an electric current or the like.
- the evaporation side control device 5 performs control by transmitting a signal including an instruction to each device and means constituting the use side evaporator unit 1. For this reason, in this embodiment, the evaporation side processing means 5A for performing processing related to control, and the evaporation side storage means 5B for storing data, programs, and the like necessary for the evaporation side processing means 5A to perform processing, have.
- a communication unit (not shown) is provided, communication with a signal including various data and the like can be performed with the condensation side control device 6, and control can be performed in cooperation with each other.
- the target temperature Tm and the target humidity hm of the blown air 16 are determined from the set temperature and the set humidity related to the user settings, and further the target intermediate temperature T1m is determined. And in order to make the temperature of the blowing air 15 into target intermediate temperature, the opening degree of the evaporation side adjustment valve 10 is controlled.
- the set temperature and the target temperature Tm, and the set humidity and the target humidity hm are different.
- the temperature detector 8 and the humidity detector 9 detect the temperature and humidity of the target space such as air conditioning, they may be handled as the same temperature and humidity.
- the use side condenser unit 18 of the present embodiment includes the use side condenser 4, the condensation side adjustment valve 11, and the condensation side control device 6.
- the use side condenser 4 performs heat exchange between the refrigerant flowing through the pipe 13 and the air from the primary side of the use side condenser unit 18. Thereby, the air from the primary side once cooled by the use side evaporator unit 1 is heated again (reheated) and discharged from the secondary side.
- the condensing side adjustment valve 11 is a valve for adjusting the condensing capacity in the use side condenser 4 by adjusting the amount and pressure of the refrigerant flowing through the use side condenser 4 by changing the opening degree. It is assumed that the condensing side adjustment valve 11 is also an electric valve capable of electrically adjusting the opening degree.
- the condensing side control device 6 controls each device constituting the use side condenser unit 18.
- the condensing side control device 6 also has condensing side processing means 6A and condensing side storage means 6B in the same manner as the evaporation side control device 5.
- the condensing side control device 6 of the present embodiment is a signal including temperature and humidity data of the blown air 16 relating to detection by the temperature detector 8 and the humidity detector 9, for example, because the evaporation side control device 5 performs processing. Send. Further, the opening degree of the condensing side adjustment valve 11 is controlled so that the temperature of the blown air 16 becomes the target temperature determined by the evaporation side control device 5.
- the fluid (heat transfer medium) flowing through the use side evaporator 3 and the use side condenser 4 via the pipes 12 and 13 is a refrigerant such as R410A in the present embodiment.
- the refrigerant is not limited to water, brine, or the like.
- the evaporation side adjustment valve 10 and the condensation side adjustment valve 11 function as a throttle device.
- it acts as a flow control valve.
- FIG. 2 is a diagram illustrating an example of an arrangement relationship between the temperature detector 7, the temperature detector 8, and the humidity detector 9.
- the temperature detector 7 serving as a second temperature detector detects the temperature of the blown air 15 (air entering the primary side of the use side condenser unit 18) from the secondary side of the use side evaporator unit 1, A signal based on the temperature is transmitted to the evaporation side control device 5.
- the temperature detector 8 serving as the first temperature detector detects the temperature of the blown air 16 that has exited from the secondary side of the use-side condenser unit 18, and sends a signal based on the temperature to the condensation-side control device 6. Send.
- the humidity detector 9 detects the humidity of the blown air 16 exiting from the secondary side of the use side condenser unit 18 and transmits a signal based on the humidity to the condensation side control device 6. For this reason, in this Embodiment, the temperature detector 8 and the humidity detector 9 shall be provided in the blower outlet, the blower duct, etc. in the utilization side condenser unit 18. FIG. However, the locations where the temperature detector 8 and the humidity detector 9 are provided are not limited to these locations. For example, in order to detect the temperature and humidity of the target space such as air conditioning, it may be provided at a position outside the use-side condenser unit 18.
- the air flow by the use side unit is drawn in from the primary side of the use side evaporator 3, the blown air 15 blown out from the secondary side of the use side evaporator 3, and the use side condenser 4. It represents as the blowing air 16 which comes out from the secondary side.
- the suction air 14, the blown air 15, and the blown air 16 have higher humidity than the blown air 15 and the blown air 16 because the sucked air 14 is air before dehumidification.
- the blown air 15 is air cooled by the use-side evaporator 3 when dehumidified, the temperature is basically lower than that of the intake air 14 and the blown air 16.
- the blown air 15 is air heated by the use side condenser 4.
- the intake air 14 may suck outdoor air (outside air) in order to ventilate the target space such as air conditioning, or may be air in the target space such as air conditioning (indoor air). Alternatively, outside air and room air may be sucked at a certain rate, and ventilation and air conditioning may be performed on the target space such as air conditioning.
- the remote controller 17 transmits a signal based on an instruction input from the user to the evaporation side control device 5.
- a signal related to the set temperature and set humidity relating to the user input is transmitted to the evaporation side control device 5.
- the setting method of temperature and humidity in the remote controller 17 is not particularly limited.
- the user may be able to input numerical values for temperature and humidity.
- humidity may not be strictly managed as compared to temperature. Therefore, for example, two types of humidity change switches, high and low, may be provided so that the user can be switched.
- the evaporation side control device 5 determines the target temperature Tm and the target humidity hm based on the set temperature and the set humidity related to transmission from the remote controller 17. Moreover, it converts into target dew point temperature Tdwm (temperature in the state where the absolute humidity in the state of target temperature Tm and target humidity hm becomes relative humidity 100%) based on target temperature Tm and target humidity hm.
- target dew point temperature Tdwm is determined as the target intermediate temperature T1m of the blown air 15.
- the opening degree of the evaporation side adjustment valve 10 is controlled based on the temperature which the temperature detector 7 detects so that the blowing air 15 may become target intermediate temperature T1m.
- a mathematical formula or the like based on a wet air diagram is stored as data in the evaporation side storage means 5B, and the evaporation side processing means 5A performs a calculation process based on the mathematical formula to obtain the target dew point. Convert to temperature Tdwm.
- control is performed so that dehumidification is performed up to the absolute humidity at which the target humidity hm is reached at the target temperature Tm.
- the target intermediate temperature T1m is corrected and the temperature of the blowout temperature 15 is lowered so that the temperature of the blowout temperature 16 becomes the target temperature Tm. To be. At this time, it goes to the direction where humidity becomes low.
- the difference in temperature (temperature) is more sensitive than humidity. Therefore, even if the humidity is low, the temperature is basically prioritized so that it is closer to the target. Pursuing harmony comfort.
- FIG. 3 is a diagram illustrating a flowchart of a process related to air conditioning control of a target space such as an air conditioning centering on the evaporation side control device 5 and the condensation side control device 6 according to the first embodiment.
- the evaporation side control device 5 evaporation side processing means 5A
- the condensation side control device 6 condensation side processing means 6A
- the processing related to the control of the condenser side unit 18 is performed based on the determination of the above.
- the division of roles related to control is not limited to this.
- the control is started (A1)
- the temperature T2 old previously detected by the temperature detector 8 is set as the temperature T2 related to the detection by the temperature detector 8 (A2).
- the evaporation side control apparatus 5 determines the target temperature Tm and the target humidity hm of the blowing air 16 based on the set temperature and the set humidity set by the user via the remote controller 17. Further, the target dew point temperature Tdwm is determined based on the target temperature Tm and the target humidity hm, and is set as the target intermediate temperature T1m of the blown air 15 (A3).
- the set temperature and the set humidity may be used as the target temperature Tm and the target humidity hm as they are.
- the evaporation side control device 5 inputs the temperature T1 related to the detection by the temperature detector 7, the temperature T2 related to the detection by the temperature detector 8, and the humidity h related to the detection by the humidity detector 9 (A4). Then, a difference ⁇ T1 between the temperature T1 and the target intermediate temperature T1m is calculated, and the opening degree of the evaporation side adjusting valve 10 is controlled based on the difference ⁇ T1 (A5). As a result, the amount and pressure of the refrigerant flowing through the use side evaporator 3 are adjusted to adjust the evaporation capacity of the use side evaporator 3, and the intake air 14 is cooled to the target intermediate temperature T1m. And the moisture in the suction air 14 which condensed by cooling is collect
- the condensation side control device 6 calculates the difference ⁇ T2 between the temperature T2 and the target temperature Tm, and changes the opening degree of the condensation side adjustment valve 11 based on the difference ⁇ T2 (A5). Thereby, the refrigerant
- the difference ⁇ T2 is calculated in the condensing side control device 6, but may be performed in the evaporation side control device 5.
- the evaporation side control device 5 compares the temperature T1 with the target intermediate temperature T1m, and determines whether or not the difference ⁇ T1 is within an allowable range ( ⁇ B ⁇ T1 ⁇ B) (A7).
- B represents a control allowable range constant. If it is determined that the temperature is outside the allowable range, the process returns to A4 assuming that the temperature of the blown air 15 has not approached the target intermediate temperature T1m, and processing is performed until the temperature is within the allowable range.
- the evaporation side control device 5 next compares the temperature T2 with the target temperature Tm based on the difference ⁇ T2 calculated by the condensation side control device 6, and within the allowable range ( ⁇ C It is determined whether or not ⁇ T2 ⁇ C) (A8).
- C represents a control allowable range constant. If it is determined that the temperature is within the allowable range, it is assumed that the temperature of the blown air 16 has reached the target temperature Tm, the operation state is maintained (operation is performed without changing the target intermediate temperature T1m) (A9), and the process returns to A4 Process.
- ⁇ T2 ⁇ ⁇ C it is further determined whether ⁇ T2 ⁇ ⁇ C (A10). If it is determined that ⁇ T2 ⁇ ⁇ C, it is only necessary to heat the blown air 15 by the use-side condenser 4 and it is not necessary to change the target intermediate temperature T1m. Therefore, the operating state is maintained (A9), The process returns to A4.
- A8 and A10 are performed separately, but the processing may be performed together.
- the target intermediate temperature T1m is corrected based on the following equation (2) (A12). Then, the control is performed with the corrected T1m as the new target intermediate temperature T1m.
- the use-side condenser unit 18 is controlled to maintain the state (A13).
- T1m T1m ⁇ X (2)
- FIG. 4 is a diagram showing the relationship between the air diagram representing the temperature and humidity of the intake air and the operation to be performed.
- (5) represents a range that can be regarded as the target temperature Tm and the target humidity hm.
- the humidity is lower than the target humidity hm, so it is necessary to perform humidification.
- the humidity is higher than the target humidity hm. Therefore, dehumidification is performed in the usage-side evaporator unit 1 (processing according to A5 to A7 in FIG. 3).
- the use side condenser unit 18 is heated so that the control is performed to be in the range of (5) (FIG. 3) A10). If the operation is within the range of (6), the control is performed by lowering the absolute humidity while reducing the absolute humidity by correcting the target intermediate temperature T1m (processing related to A11 to A13 in FIG. 3).
- the correction value X is based on the difference ⁇ T2 between the target temperature Tm and the temperature T2.
- the minimum condensation capacity of the use side condenser 4 is Even if it is high, the temperature and humidity of the blown air 16 can be brought close to the target temperature and target humidity. Therefore, comfort related to air conditioning can be pursued.
- the use side condenser unit 18 that performs reheating heats the blown air 15 by heat exchange with the refrigerant or the like in the use side condenser 4. Therefore, it is not necessary to reheat with an electric heater or the like, and an accident such as a fire can be prevented because the electric heater becomes high temperature. Therefore, the reliability of the user side unit is increased, and it is not necessary to use a fireproof structure device. Therefore, the structure can be simplified and the device can be miniaturized.
- Embodiment 2 The utilization side unit of the first embodiment described above corrects the target intermediate temperature T1m of the blown air 15 based on the difference ⁇ T2 between the temperature T2 of the blown air 16 and the target temperature Tm. By this correction, the temperature of the blown air 15 is lowered and the temperature of the blown air 16 is adjusted. For this reason, temperature is prioritized over humidity so as to approach the target.
- the intake air 14 is cooled in order to lower the temperature of the blown air 15, but if the target intermediate temperature T1m (target dew point temperature Tdwm) of the blown air 15 is lowered, the humidity may be lowered too much (FIG. 4). (It becomes the range of (2)). When the humidity decreases, for example, the number of occurrences of static electricity increases. For this reason, comfort may be impaired compared with the case where the temperature of air is not controlled.
- Fig. 5 is a graph showing the relative humidity and the number of shocks due to static electricity reported in one day. As shown in FIG. 5, for example, when the humidity is lower than 35%, the number of shocks due to static electricity increases rapidly. For this reason, if the humidity is maintained at 35% or more, the number of shocks due to static electricity can be reduced.
- the second embodiment by preventing the humidity from being lowered too much by correcting the target intermediate temperature T1m, the number of static electricity shocks is reduced and a more comfortable air conditioner is provided.
- the configuration of the usage-side unit according to the second embodiment of the present invention is the same as that of the first embodiment, description of the devices and the like of the usage-side unit will be made with reference to FIG.
- FIG. 6 is a diagram illustrating a flowchart relating to control of air conditioning processing centering on the evaporation side control device 5 (condensation side control device 6) according to the second embodiment.
- the processing in steps A1 to A12 is the same as that in the first embodiment.
- a lower limit humidity h min representing a lower limit value of humidity is set in advance.
- the evaporation side control device 5 converts the relative humidity h temp based on the target intermediate temperature T1m corrected by the correction value X in step A12 and the target temperature Tm (A20). Then, by comparing the relative humidity h temp and lower humidity h min, determines the relative humidity h temp is whether equal to or higher than the lower limit humidity h min (A21). If it is determined that the relative humidity h temp is equal to or higher than the lower limit humidity h min , control is performed based on the corrected target intermediate temperature T1m. The use-side condenser unit 18 is controlled to maintain the state (A13).
- the user may be able to set it by inputting an arbitrary numerical value from the remote controller 17. Moreover, it may be possible to set by switching a switch provided on the remote controller 17 or the like.
- the lower limit humidity h min can be set, and when the target intermediate temperature T1m is corrected, the humidity of the blown air 16 becomes lower than the lower limit humidity h min. If it is determined that, since so as to determine the target intermediate temperature T1m based on the lower limit humidity h min, never humidity of the outlet air 16 becomes lower than the lower limit humidity h min. Therefore, for example, generation of static electricity can be suppressed, and comfort in the target space such as air conditioning can be pursued.
- FIG. 7 is a diagram illustrating a configuration example of an air-conditioning apparatus according to Embodiment 3.
- the air conditioner of FIG. 7 includes a heat source side unit (outdoor unit) 100 and the use side unit (indoor unit) 200 described in the first and second embodiments. And these are connected by refrigerant
- a pipe through which a gaseous refrigerant (gas refrigerant) flows is referred to as a gas pipe 300
- a pipe through which a liquid refrigerant (liquid refrigerant, which may be a gas-liquid two-phase refrigerant) flows is referred to as a liquid pipe 400.
- the heat source side unit 100 is configured by each device (means) of the compressor 101, the oil separator 102, the heat source side condenser 103, the heat source side fan 104, the accumulator 105, and the heat source side control device 111. .
- the compressor 101 sucks in the refrigerant, compresses the refrigerant, converts it into a high-temperature and high-pressure gas state, and flows it through the refrigerant pipe.
- an inverter circuit (not shown) or the like is provided in the compressor 101, and the capacity of the compressor 101 (amount of refrigerant sent out per unit time) is arbitrarily changed by changing the operation frequency. Can be changed finely.
- the oil separator 102 is for separating the lubricating oil discharged from the compressor 101 mixed with the refrigerant. The separated lubricating oil is returned to the compressor 101.
- the heat source side condenser 103 performs heat exchange between the refrigerant and the outside air. Heat exchange is performed between the refrigerant compressed in the compressor 101 and air, and the refrigerant is condensed and liquefied.
- the heat source side condenser 103 is provided with a heat source side fan 104 in order to efficiently exchange heat between the refrigerant and the air.
- the heat source side fan 104 may also have an inverter circuit (not shown), and the operation frequency of the fan motor may be arbitrarily changed to finely change the rotation speed of the fan.
- the accumulator 105 is means for storing, for example, liquid surplus refrigerant.
- the heat source side control device 111 is composed of, for example, a microcomputer. It is possible to perform wired or wireless communication with the evaporation side control device 5 (condensation side control device 6) described above. For example, based on temperature, humidity, and the like related to detection by various detection means (sensors) in the air conditioner, an inverter The operation control of the entire air conditioner is performed by controlling each means related to the air conditioner such as the operation frequency control of the compressor 101 by circuit control.
- the pipes 12 and 13 are connected in series so that the pipe 13 is on the upstream side with respect to the refrigerant flow. Therefore, the refrigerant further condensed in the use side condenser 4 as well as the heat source side condenser 103 flows into the use side evaporator 3.
- the operation of the air conditioner will be described based on the circulation of the refrigerant in the refrigerant circuit.
- the high-temperature, high-pressure gas (gas) refrigerant discharged from the compressor 101 condenses by passing through the heat source side condenser 103, and the liquid refrigerant (or gas-liquid two-phase refrigerant) And the heat source side unit 100 flows out.
- the refrigerant that has flowed into the usage-side unit 200 through the liquid pipe 400 passes through the condensation-side adjustment valve 11 and the usage-side condenser 4 to heat the blown air 15, and the evaporation-side adjustment valve 10 and the usage-side evaporator.
- the intake air 14 is cooled and dehumidified.
- the refrigerant that has passed through the use side evaporator 3 evaporates and flows out. Then, the gas flows into the heat source unit 100 through the gas pipe 300, is sucked into the compressor 101, is pressurized again, and is circulated by being discharged.
- the amount of refrigerant discharged from the compressor 101 by adjusting the amount of refrigerant discharged from the compressor 101, the amount of refrigerant flowing through the use side evaporator 3 and the use side condenser 4 is changed, and the evaporation capacity of the use side evaporator 3 and the use side condenser 4 are changed.
- the condensing capacity may be changed. Thereby, the temperature and humidity of the blowing air 15 and the blowing air 16 can be adjusted.
- the use side unit 200 described in the first and second embodiments and the heat source side unit 100 including the compressor 101 and the heat source side condenser 103 are provided.
- a refrigerant circuit is configured by pipe connection through the gas pipe 300 and the liquid pipe 400. Then, the refrigerant flows through the pipes 12 and 13 to the use side evaporator unit 1 and the use side condenser unit 18. For this reason, the amount of heat that the heat source side condenser 103 of the heat source side unit 100 originally wastes by cooling and dehumidification by the usage side evaporator unit 1 is used in the usage side condenser 4 of the usage side condenser unit 18.
- the blown air 15 can be reheated (heated), and energy saving can be achieved.
- Embodiment 4 FIG.
- the case where the temperature and humidity of the blown air 16 are controlled to the target temperature and target humidity has been described.
- the humidity is fixed, and the temperature of the blown air 15 and 16 is simply set to the target temperature. It can also be used in cases such as when controlling.
- the use side evaporator 3 and the use side condenser 4 are provided, and air is cooled (dehumidified) and reheated by heat exchange with a heat transfer medium such as a refrigerant. And sent out to the target space such as air conditioning.
- air cooling (dehumidification) and reheating may be performed using another cooling means and heating means.
- Embodiment 5 FIG.
- the heat source side condenser 103 which is a heat exchanger of the heat source side unit 100 has a condensing function, but is not limited thereto.
- an evaporator having an evaporation function may be used.
- a four-way valve or the like may be provided so that either evaporation or condensation can be performed by the flowing refrigerant.
- the flow of the refrigerant in the use side unit 200 must be changed by changing the pipe connection in the use side unit 200 to be different from that in FIG.
- Embodiment 3 the use-side evaporator 3 and the use-side condenser 4 are connected in series and configured in the same refrigerant circuit, but different refrigerant circuits may be used.
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Abstract
Description
図1は本発明の実施の形態1に係る空気調和装置の利用側ユニットの構成を示す図である。図1の利用側ユニットは、利用側蒸発器ユニット1、利用側凝縮器ユニット18及びリモートコントローラ(以下、リモコンという)17を有している。利用側ユニット内では、利用側蒸発器ユニット1が一次側から吸込空気14として吸い込んで二次側から吹き出した吹出空気15が、利用側凝縮器ユニット18の一次側から二次側を通過して空調等対象空間に吹出空気16として吹き出される(送り出される)。
X=T2-(Tm+C) …(1)
T1m=T1m-X …(2)
上述した実施の形態1の利用側ユニットは、吹出空気16の温度T2と目標温度Tmとの差ΔT2に基づいて、吹出空気15の目標中間温度T1mを補正する。この補正により、吹出空気15の温度を下げ、吹出空気16の温度を調整するようにしたものである。そのため、湿度に比して温度を優先させて目標に近づけるようにしている。ここで、吹出空気15の温度を下げるために吸込空気14を冷却するが、吹出空気15の目標中間温度T1m(目標露点温度Tdwm)を下げると湿度が下がりすぎてしまうことがある(図4の(2)の範囲となる)。湿度が下がると例えば静電気の発生回数が多くなる。このため、空気の温度が制御されていない場合よりも快適性を損なう場合がある。
図7は実施の形態3に係る空気調和装置の構成例を表す図である。図7の空気調和装置は、熱源側ユニット(室外機)100と実施の形態1及び2において説明した利用側ユニット(室内機)200とを備える。そして、これらが冷媒配管で連結され、冷媒回路を構成して冷媒を循環させている。冷媒配管のうち、気体の冷媒(ガス冷媒)が流れる配管をガス配管300とし、液体の冷媒(液冷媒。気液二相冷媒の場合もある)が流れる配管を液配管400とする。
上述の実施の形態1、2では、吹出空気16の温度、湿度を目標温度、目標湿度に制御する場合について述べたが、例えば、湿度は固定し、単に吹出空気15、16の温度を目標温度に制御するような場合にも利用することができる。
上述の実施の形態3では、熱源側ユニット100の熱交換器である熱源側凝縮器103は凝縮機能を有するものであるが、これに限定するものではない。例えば、蒸発機能を有する蒸発器としてもよい。また、例えば四方弁等を設け、流入する冷媒によって、蒸発、凝縮のいずれかを行えるようにしてもよい。これらの場合には、例えば利用側ユニット200においても、図7とは異なる配管接続に変更する、切り換えを行えるようにする等して、利用側ユニット200内における冷媒の流れを変更しなければならない
Claims (6)
- 空調対象空間に送り出す空気を熱交換により冷却して凝結させた水分を回収して除湿を行う蒸発器と、
該蒸発器を通過した空気を熱交換により加熱して前記空調等対象空間に送り出すための凝縮器と、
前記空調等対象空間に送り出す空気の乾球温度を検知するための第一の温度検知器と、
目標乾球温度及び目標相対湿度に基づいて前記蒸発器を通過した空気の乾球温度目標となる目標中間乾球温度を決定し、また、前記第一の温度検知器の検知に係る乾球温度と前記目標乾球温度との差が所定値より大きいと判定すると、前記第一の温度検知器の検知に係る乾球温度と前記目標乾球温度との差に基づいて補正値を算出し、該補正値に基づいて前記目標中間乾球温度を補正する処理を行う制御装置と
を備えることを特徴とする利用側ユニット。 - 前記蒸発器を通過する空気との熱交換を行う熱量搬送媒体の流量を調節するための蒸発側調整弁と、
前記凝縮器を通過する空気との熱交換を行う熱量搬送媒体の流量を調節するための凝縮側調整弁と、
前記蒸発器を通過した空気の乾球温度を検知する第二の温度検知器とをさらに備え、
前記制御装置は、前記第二の温度検知器の検知に係る乾球温度が前記目標中間乾球温度となるように前記蒸発側調整弁の開度を制御し、前記第一の温度検知器の検知に係る乾球温度が前記目標乾球温度となるように前記凝縮側調整弁の開度を制御することを特徴とする請求項1に記載の利用側ユニット。 - 乾球温度及び/又は相対湿度を設定するための入力手段をさらに備え、
前記制御装置は、設定に係る乾球温度及び/又は相対湿度に基づいて、前記目標乾球温度及び/又は前記目標相対湿度を決定することを特徴とする請求項1又は2に記載の利用側ユニット。 - 前記空調等対象空間に送り出す空気の相対湿度に対する下限値をデータとして記憶する記憶装置をさらに備え、
前記制御装置は、算出した補正値により補正した前記目標中間乾球温度における空気の相対湿度が前記下限値よりも低くなるものと判断すると、前記下限値に基づく目標中間乾球温度により補正する処理を行うことを特徴とする請求項1~3のいずれかに記載の利用側ユニット。 - 請求項1~4に記載の利用側ユニットと、
熱量搬送媒体を加圧する圧縮機及び熱交換により前記熱量搬送媒体を凝縮させる熱源側熱交換器を有する熱源側ユニットと
を配管接続して前記熱量搬送媒体を循環させる冷媒回路を構成する空気調和装置。 - 前記圧縮機からの前記熱量搬送媒体の吐出量を制御して前記蒸発器及び/又は前記凝縮器を通過する前記熱量搬送媒体の流量を調節することを特徴とする請求項5に記載の空気調和装置。
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EP09840345.4A EP2400234B1 (en) | 2009-02-20 | 2009-02-20 | Use-side unit and air conditioner |
JP2011500409A JP4975187B2 (ja) | 2009-02-20 | 2009-02-20 | 利用側ユニット及び空気調和装置 |
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Also Published As
Publication number | Publication date |
---|---|
CN102317699A (zh) | 2012-01-11 |
JPWO2010095238A1 (ja) | 2012-08-16 |
EP2400234A4 (en) | 2017-08-30 |
CN102317699B (zh) | 2014-11-12 |
JP4975187B2 (ja) | 2012-07-11 |
EP2400234B1 (en) | 2018-05-02 |
US20110276185A1 (en) | 2011-11-10 |
EP2400234A1 (en) | 2011-12-28 |
US9562700B2 (en) | 2017-02-07 |
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