EP2233849A1 - Appareil de climatisation - Google Patents

Appareil de climatisation Download PDF

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Publication number
EP2233849A1
EP2233849A1 EP08854193A EP08854193A EP2233849A1 EP 2233849 A1 EP2233849 A1 EP 2233849A1 EP 08854193 A EP08854193 A EP 08854193A EP 08854193 A EP08854193 A EP 08854193A EP 2233849 A1 EP2233849 A1 EP 2233849A1
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EP
European Patent Office
Prior art keywords
humidity
temperature
target
indoor
unit
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.)
Withdrawn
Application number
EP08854193A
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German (de)
English (en)
Inventor
Atsushi Matsubara
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries 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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of EP2233849A1 publication Critical patent/EP2233849A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • F24F11/62—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
    • F24F11/65—Electronic processing for selecting an operating mode

Definitions

  • the present invention generally relates to air conditioners.
  • Air conditioners configured to control room conditions (e.g., temperature and humidity), have been produced for maintaining more comfortable indoor air-conditioning environment (see e.g., Patent Document 1).
  • an object of the present invention is to provide an air conditioner for achieving physical comfortableness of a user based on both temperature and humidity at an earliest possible stage.
  • An air conditioner configured to execute automatic control of an encrgy-saving operation.
  • the air conditioner includes a determining unit and a regulating unit.
  • the determining unit is configured to determine whether or not indoor temperature reaches target temperature and whether or not indoor humidity reaches target humidity.
  • the target temperature and the target humidity are target values for achieving comfortableness.
  • the regulating unit is configured to execute a first regulation processing and/or a second regulation processing.
  • the target temperature is regulated to be regulated target temperature roughly equal to the target temperature based on a relation between the indoor humidity and the target humidity.
  • the target humidity is regulated to be regulated target humidity roughly equal to the target humidity based on a relation between the indoor temperature and the target temperature.
  • the target temperature is regulated to be the regulated target temperature roughly equal to the target temperature when the indoor humidity does not reach the target humidity.
  • the target humidity is regulated to be the regulated target humidity roughly equal to the target humidity when the indoor temperature does not reach the target temperature.
  • the following is an example case for "regulation of the target temperature to be regulated target temperature roughly equal to the target temperature".
  • the target temperature is assumed to be 22.0 degrees Celsius
  • the target temperature is regulated to be temperature of roughly 22.0 degrees Celsius (e.g., 21.0 degrees Celsius or 23.0 degrees Celsius).
  • the target humidity is regulated to be humidity of roughly 50% (e.g., 45% or 55%).
  • the foregoing configuration makes it possible to achieve physical comfortableness based on both temperature and humidity at earliest possible stage even when temperature does not reach the target temperature or humidity does not reach the target humidity.
  • An air conditioner according to a second aspect of the present invention is the air conditioner according to the first aspect of the present invention, wherein, when one of the indoor temperature and the indoor humidity reaches its target value (i.e., the target temperature or the target humidity) but the other of the indoor temperature and the indoor humidity does not reach its target value (i.e., the target temperature of the target humidity), the regulating unit of the air conditioner is configured to temporarily set one of the indoor temperature and the indoor humidity, reaching the target value (i.e., the target temperature or the target humidity), to be an excessive target value as a value exceeding the target value.
  • the target value i.e., the target temperature or the target humidity
  • the air conditioner of the second aspect of the present invention when one of the indoor temperature and the indoor humidity reaches the target value (i.e., the target temperature or the target humidity) and the other of the indoor temperature and the indoor humidity does not reach the target value (i.e., the target temperature or the target humidity), one of the indoor temperature and the indoor humidity, reaching the target value (i.e., the target temperature or the target humidity), is temporarily set to be the excessive target value.
  • the target temperature i.e., the target temperature or the target humidity
  • setting of the target temperature is temporarily changed to be a value exceeding the target indoor temperature.
  • setting of the target humidity is temporarily changed to be a value exceeding the target humidity.
  • An air conditioner according to a third aspect of the present invention is the air conditioner according to the second aspect of the present invention, wherein the regulating unit is configured to set the target temperature to be excessive temperature when the indoor humidity does not reach the target humidity in the first regulation processing. Subsequently, the regulating unit is configured to return the excessive temperature to the previous target temperature when the indoor humidity reaches the target humidity.
  • the excessive temperature herein refers to a target value exceeding the target temperature.
  • the indoor temperature is set to be the excessive temperature exceeding the target temperature when humidity does not reach the target humidity. Subsequently, the excessive temperature is returned to the previous target temperature when indoor humidity reaches the target humidity.
  • An air conditioner according to a fourth aspect of the present invention is the air conditioner according to one of the first to third aspects of the present invention, wherein the energy-saving operation includes plural operation modes.
  • the target humidity and the target temperature are determined based on a selected one of the operation modes.
  • the air conditioner of the fourth aspect of the present invention is controlled with the target temperature and the target humidity depending on a selected one of the operation modes.
  • An air conditioner according to a fifth aspect of the present invention is the air conditioner according to one of the first to fourth aspects of the present invention further including an indoor humidity detecting unit.
  • the indoor humidity detecting unit is configured to detect indoor humidity.
  • the indoor humidity detecting unit is, for instance, a humidity sensor or a unit configured to estimate humidity based on temperature of an indoor heat exchanger.
  • An air conditioner according to a sixth aspect of the present invention is the air conditioner according to one of the first to fourth aspects of the present invention further including a compressor, an outdoor heat exchanger, an indoor heat exchanger, a temperature detecting unit, and an estimating unit.
  • the temperature detecting unit is configured to detect temperature of the indoor heat exchanger.
  • the estimating unit is configured to estimate indoor humidity. Specifically, the estimating unit is configured to estimate indoor humidity based on temperature of the indoor heat exchanger detected by the temperature detecting unit when either a cooling operation mode or a dehumidifying operation mode is selected.
  • comparison is made between humidity estimated based on temperature of the indoor heat exchanger and the target humidity.
  • the air conditioner of the first aspect of the present invention it is possible to achieve physical comfortableness based on both temperature and indoor humidity, at earliest possible stage, even when temperature does not reach the target temperature or indoor humidity does not reach the target humidity.
  • the air conditioner of the second aspect of the present invention it is possible to achieve comfortable room environment in consideration of either the indoor temperature or the indoor humidity that does not reach the target value.
  • the air conditioner of the third aspect of the present invention it is possible to achieve an energy-saving effect because setting of the target temperature is returned to the original setting when the indoor humidity reaches the target humidity.
  • the air conditioner of the fourth aspect of the present invention it is possible to achieve comfortable air-conditioning environment in each of the operation modes.
  • the air conditioner of the fifth aspect of the present invention it is possible to achieve comfortable air-conditioning environment by regulating the indoor humidity based on the detected humidity.
  • the air conditioner of the sixth aspect of the present invention it is possible to achieve comfortable air-conditioning environment in consideration of indoor humidity even if the air conditioner is not provided with a humidity sensor.
  • FIG. 1 illustrates an external view of an air conditioner 1 according to an exemplary embodiment of the present invention.
  • the air conditioner 1 is mainly composed of an indoor unit 2 and an outdoor unit 3.
  • the indoor unit 2 is attached to a wall of a room.
  • the outdoor unit 3 is installed outside of the room.
  • the indoor unit 2 and the outdoor unit 3 send/receive a signal through a communication line exclusively for the signal transmission.
  • the outdoor unit 3 is composed of an outdoor air-conditioning unit 5 and a humidifier unit 4.
  • the outdoor air-conditioning unit 5 is connected to the indoor unit 2 through refrigerant pipes 31, 32.
  • the outdoor air-conditioning unit 5 and the indoor unit 2 form a refrigerant circuit to be described.
  • the humidifier unit 4 is connected to the indoor unit 2 through an air supply duct 6. Outdoor air, inhaled by the humidifier unit 4, is transferred to the indoor unit 2 through the air supply duct 6.
  • the air conditioner 1 is provided with various operation modes such as a cooling operation mode, a heating operation mode, a dehumidifying operation mode, and an energy-saving automatic operation mode.
  • the air conditioner 1 is configured to execute the forgoing modes for producing comfortable room environment in response to a request from a user.
  • the energy-saving automatic operation mode refers to a mode that various conditions, including e.g., target temperature, target humidity, air directions, and air flow amount, are preliminarily set for fully achieving comfortableness and for executing a control with good energy-saving efficacy.
  • the air conditioner 1 is configured to be controlled based on the conditions (e.g., the target temperature and the target humidity) preliminarily set for cooling and heating periods separately. Specifically, a dehumidifying operation or a cooling operation (dehumidifying cooling operation) is configured to be executed in the cooling period, whereas a heating operation (i.e., humidifying heating operation) is configured to be executed in the heating period.
  • a dehumidifying operation or a cooling operation is configured to be executed in the cooling period
  • a heating operation i.e., humidifying heating operation
  • FIG.2 shows a refrigerant circuit formed by the indoor unit 2 and the outdoor air-conditioning unit 5. Structures and configurations of the indoor unit 2 and the outdoor air-conditioning unit 5 will be hereinafter described with reference to FIGS.2 and 3 .
  • the indoor unit 2 mainly includes an indoor heat exchanger 21, a cross-flow fan 22, and an indoor fan motor 23.
  • the indoor heat exchanger 21 is composed of a heat-transfer pipe and plural fins.
  • the heat-transfer pipe is bent plural times between its longitudinal ends.
  • the heat-transfer pipe passes through the fins.
  • the indoor heat exchanger 21 is configured to exchange heat with air that it makes contact.
  • the indoor heat exchanger 21 functions as an evaporator for decreasing temperature of indoor heat that it makes contact.
  • the indoor heat exchanger 21 functions as a condenser.
  • the air, making contact with the indoor heat exchanger 21, is thereby heated and supplied into the indoor space.
  • the cross-flow fan 22 is formed in a cylindrical shape.
  • the cross-flow fan 22 has plural blades on its outer peripheral surface.
  • the cross-flow fan 22 is configured to generate airflow in perpendicular directions to its rotation shaft. Accordingly, the cross-flow fan 22 inhales the indoor air into the indoor unit 2, and simultaneously blows out the air, heat-exchanged with the indoor heat exchanger 21, into the indoor space.
  • the cross-flow fan 22 is driven and rotated by the indoor fan motor 23.
  • the indoor fan motor 23 is connected to a control unit 8 described below.
  • the indoor fan motor 23 is configured to be actuated in response to a control signal from the control unit 8.
  • the indoor unit 2 includes various sensors attached thereto.
  • the sensors include an inhalation temperature sensor 25 and an indoor humidity sensor 26.
  • the inhalation temperature sensor 25 detects temperature of the indoor air to be inhaled into the indoor unit 2, whereas the indoor humidity sensor 26 detects humidity of the indoor space. Humidity, detected herein by the indoor humidity sensor 26, is relative humidity.
  • the inhalation temperature sensor 25 and the indoor humidity sensor 26 are respectively connected to the control unit 8. Values (i.e., temperature and humidity), respectively detected by the inhalation temperature sensor 25 and the indoor humidity sensor 26, are thereby transmitted to the control unit 8.
  • the Outdoor air-conditioning unit 5 mainly includes a compressor 51, a propeller fan 52, an outdoor fan motor 53, an outdoor heat exchanger 54, a four-way switch valve 55, an electric valve 56, a liquid closing valve 57, and a gas closing valve 58.
  • the compressor 51 is a machine configured to regulate its capacity through an inverter control.
  • the compressor 51 is configured to inhale low-pressure gas refrigerant, compress the inhaled low-pressure gas refrigerant, and discharge high-pressure gas refrigerant changed from the low-pressure gas refrigerant.
  • the propeller fan 52 is driven and rotated by the outdoor fan motor 53.
  • the propeller fan 52 is configured to inhale the outdoor air into a casing of the outdoor air-conditioning unit 5.
  • the outdoor heat exchanger 54 is configured to exchange heat between the refrigerant flowing through the interior of the outdoor heat exchanger 54 and the outdoor air inhaled into the outdoor air-conditioning unit 5 by means of the propeller fan 52.
  • One end of the Outdoor heat exchanger 54 is connected to the four-way switch valve 55, whereas the other end thereof is connected to the electric valve 56.
  • the four-way switch valve 55 is configured to switch a refrigerant circuit based on the cooling/heating mode.
  • the refrigerant, flowing through the outdoor heat exchanger 54 discharges heat in the cooling operation mode (i.e., when the four-way switch valve 55 is in state of a solid line), but absorbs heat in the heating operation mode (i.e., when the four-way switch valve 55 is in state of a dashed line).
  • the electric valve 56 is configured to change its valve opening degree for controlling the amount of the refrigerant flowing into the outdoor heat exchanger 54.
  • the liquid closing valve 57 and the gas closing valve 58 are configured to open/close the refrigerant circuit.
  • components including e.g., the outdoor fan motor 53, the compressor 51, the four-way switch valve 55, the electric valve 56, the liquid closing valve 57, and the gas closing valve 58, are connected to the control unit 8. Accordingly, these components are configured to be actuated in response to a control signal from the control unit 8.
  • the outdoor air-conditioning unit 5 is further provided with various sensors such as an outdoor temperature sensor 59 shown in FIG.3 .
  • the outdoor temperature sensor 59 is configured to detect outdoor temperature.
  • the outdoor temperature sensor 59 is connected to the control unit 8 described below. A value detected by the outdoor temperature sensor 59 is transmitted to the control unit 8.
  • the humidifier unit 4 is configured to humidify inhaled outdoor air and supply humidified air into the indoor space.
  • the humidifier unit 4 mainly includes an inhalation humidifier rotor 41, a rotor drive motor 42, a heater 43, a radial fan 44, a radial fan motor 45, an adsorption fan 46, and an adsorption fan motor 47.
  • the inhalation humidifier rotor 41 is a roughly disc-shaped ceramic rotor with a honeycomb structure for allowing air to easily pass through.
  • the inhalation humidifier rotor 41 carries adsorption agent such as zeolite, silica gel or alumina.
  • the inhalation humidifier rotor 41 is configured to adsorb moisture contained in the air that it makes contact and dehumidify the adsorbed moisture by means of heating.
  • the inhalation humidifier rotor 41 is driven and rotated by the rotor drive motor 42.
  • the heater 43 is configured to heat the inhaled outdoor air to be transferred to the inhalation humidifier rotor 41 in humidification.
  • the radial fan 44 is disposed lateral to the inhalation humidifier rotor 41.
  • the radial fan 44 is driven by the radial fan motor 45.
  • the radial fan 44 is configured to introduce the outdoor air into the humidifier unit 4 and generate flow of the air to be blown out to the indoor space (see A1 in FIG.2 ).
  • the radial fan 44 generates the following airflow. That is, the outdoor air is introduced into the humidifier unit 4 through an air supply port 40a, then passes through the inhalation humidifier 41, and is transferred to the indoor unit 2 through the air supply duct 6.
  • the adsorption fan 46 is driven and rotated by the adsorption fan motor 47.
  • the adsorption fan 46 generates airflow for discharging the outdoor air, inhaled into the casing of the humidifier unit 4 through an inhalation port 40b, out of the casing through a blowout port 40c (see A2 in FIG.2 ).
  • the inhalation humidifier rotor 41 adsorbs moisture contained in the air inhaled through the inhalation portion 40b for a moisture-adsorption objective. After the moisture adsorption, the air is discharged to the outdoor space through the blowout port 40c.
  • components including e.g., the rotor drive motor 42, the heater 43, the radial fan motor 45, and the adsorption fan motor 47, are connected to the control unit 8 described below. These components are configured to be actuated in response to a control signal from the control unit 8.
  • the heater 43 is turned on for heating the air inhaled through the air supply port 40a. After heated by the heater, the air is transferred to the air supply duct 6 while containing the moisture separated in the inhalation humidifier rotor 41.
  • control unit 8 configured to control the air conditioner 1, will be hereinafter described with reference to FIG.3 .
  • the control unit 8 is a microcomputer composed of a CPU and a memory.
  • the control unit 8 is divided into plural units, and the units are separately mounted in and shared by the indoor unit 2, an electric equipment box disposed in the humidifier unit 4 and the outdoor air-conditioning unit 5 included in the outdoor unit 3, and the like.
  • Devices, included in the indoor unit 2, the outdoor air-conditioning unit 5, and the humidifier unit 4, are connected to the control unit 8.
  • the control unit 8 is configured to send/receive a signal to/from the devices.
  • the control unit 8 mainly includes a receiving unit 8a, a regulating unit 8b, a detecting unit 8c, and a determining unit 8d.
  • the receiving unit 8a is configured to receive a user request received by a signal receiver 24 illustrated in FIG.1 .
  • the receiving unit 8a is configured to receive a user request set by a remote controller (not illustrated in the figure) through the signal receiver 24.
  • the user request herein includes an operation mode, temperature, humidity, airflow direction, and airflow amount.
  • the regulating unit 8b is configured to regulate temperature, humidity, airflow direction, and airflow amount in response to the user request received by the receiving unit 8a. Specifically, the regulating unit 8b is configured to set target values based on the set conditions including an operation mode, temperature, humidity, airflow direction, and airflow amount. For example, when the receiving unit 8a receives any one of the operation modes: the heating operation mode; the cooling operation mode; and the dehumidifying operation mode, the air conditioner 1 is controlled based on the user's desired conditions (i.e., temperature, humidity, airflow direction, and airflow amount) as the target values.
  • the receiving unit 8a receives any one of the operation modes: the heating operation mode; the cooling operation mode; and the dehumidifying operation mode
  • the air conditioner 1 is controlled based on the user's desired conditions (i.e., temperature, humidity, airflow direction, and airflow amount) as the target values.
  • various conditions including e.g., frequency of the compressor 51 mounted in the outdoor air-conditioning unit 5, opening degree of the electric valve 56, angle of a flap (not illustrated in the figure), and revolution of the indoor fan motor 23, are changed in accordance with the target values set by the regulating unit 8b.
  • various controls are executed, including e.g., activation/deactivation control (i.e., ON/OFF control) of the heater 43 mounted in the humidifier unit 4 and control of the rotor drive motor 42.
  • the air conditioner 1 is thus controlled by regulating temperature, humidity, airflow direction, and airflow amount for achieving the desired indoor environment (e.g., temperature) set by a user.
  • the regulating unit 8b is configured to set predetermined conditions (i.e., temperature, humidity, airflow direction, airflow amount, and the like) as the target values for reliably achieving both energy saving and comfortableness.
  • the target values are herein separately set for the heating period and the cooling period.
  • FIG.4 it is determined which one of the heating and cooling operations should be executed based on indoor temperature detected by the inhalation temperature sensor 25 and outdoor temperature detected by the outdoor temperature sensor 59.
  • the control unit 8 is provided with a timer (not illustrated in the figure).
  • the control unit 8 is configured to cause the sensors 25, 59 to detect the indoor temperature and the outdoor temperature at predetermined time intervals measured by the timer. Based on the detected indoor and outdoor temperatures, the control unit 8 is configured to again determine which one of the heating and cooling operations should be executed in the energy-saving automatic operation mode.
  • the regulating unit 8b is configured to set PMV-based temperature as target temperature for reliably achieving comfortableness.
  • PMV is a thermal sensation index for indicating comfortableness
  • the target temperature satisfies a condition where a value of PMV is approximately zero.
  • a value of PMV is normally determined with parameters such as indoor temperature, relative humidity, mean radiant temperature, wearing amount, activity amount, and airflow amount.
  • the parameters, excluding temperature and humidity are set to be predetermined standard values for controlling the air conditioner 1 in the present exemplary embodiment.
  • the regulating unit 8b is further configured to correct the PMV-based temperature for obtaining target temperature. Specifically, 0.5 degrees Celsius is subtracted from the PMV-based temperature in the heating operation, whereas 0.5 degrees Celsius is added to the PMV-based target temperature in the cooling operation.
  • the following example case will be provided.
  • PMV best comfortableness is achieved at indoor temperature of 22.5 degrees Celsius and humidity of 50% during the heating operation in the energy-saving automatic operation mode.
  • the regulating unit 8b of the air conditioner 1 of the present exemplary embodiment is configured to set 22.0 degrees Celsius as the target indoor temperature and set 50% as the target humidity.
  • best comfortableness is achieved at indoor temperature of 27.5 degrees Celsius and humidity of 50% during the cooling operation in the energy-saving automatic operation mode.
  • the regulating unit 8b of the air conditioner 1 of the present exemplary embodiment is configured to set 28.0 degrees Celsius as the target indoor temperature and set 50% as the target humidity.
  • control unit 8 When the regulating unit 8b sets the target values, the control unit 8 is configured to output a control signal to the respective devices in the indoor unit 2, the outdoor air-conditioning unit 5, and the humidifier unit 4. Accordingly, the respective devices are actuated in accordance with the target values.
  • the regulating unit 8b is configured to change the target temperature based on a result of determination by the determining unit 8d described below. Detailed explanation thereof will be hereinafter provided together with explanation of the determining unit 8d.
  • the detecting unit 8c is configured to detect values measured by the inhalation temperature sensor 25 and the indoor humidity sensor 26.
  • the determining unit 8d is configured to determine whether or not the values detected by the detecting unit 8c reach the target temperature and the target humidity.
  • the regulating unit 8b is configured to correct the target temperature by 1 degree Celsius when the determining unit 8d determines that indoor humidity, measured by the indoor humidity sensor 26 and then detected by the detecting unit 8c, does not reach the target humidity even though temperature, measured by the inhalation temperature sensor 25 and then detected by the detecting unit 8c, reaches the target temperature.
  • the regulating unit 8b is configured to add 1 degree Celsius to the target temperature in the heating operation.
  • the regulating unit 8b is configured to subtract 1 degree Celsius from the target temperature in the cooling operation.
  • the regulating unit 8b thus obtains new (corrected) target temperature (corresponding to "excessive temperature"). More specifically, the regulating unit 8b is configured to correct the target temperature of 22.0 degrees Celsius to be the new (corrected) target temperature of 23.0 degrees Celsius in the heating operation. On the other hand, the regulating unit 8b is configured to correct the target temperature of 28.0 degrees Celsius to be the new (corrected) target temperature of 27.0 degrees Celsius in the cooling operation.
  • humidity changes in accordance with the correction of the target temperature, and comfortableness can be reliably achieved in the indoor environment at an earliest possible stage.
  • FIGS.5A and 5B respectively show temperature shifting for obtaining recommended humidity.
  • each of "DHA_W1" and “DHA_W2” indicates determination baseline humidity in a humidity zone recommended in the heating operation.
  • each of "DHA_C1" and “DHA_C2” indicates determination baseline humidity in a humidity zone recommended in the cooling operation.
  • each "DDH” in FIGS.5A and 5B indicates humidity-zone deviation.
  • the heating operation see FIG.5A
  • the following example will be provided.
  • the regulating unit 8b is configured to return the new (corrected) target temperature to the previous target temperature. Specifically, during the heating operation in the energy-saving automatic operation mode, the regulating unit 8b returns the new (corrected) target temperature of 23.0 degrees Celsius to the previous target temperature of 22.0 degrees Celsius. On the other hand, during the cooling operation in the energy-saving automatic operation mode, the regulating unit 8b returns the new (corrected) target temperature of 27.0 degrees Celsius to the previous target temperature of 28.0 degrees Celsius.
  • the heating operation is activated based on temperatures that are measured by the inhalation temperature sensor 25 and the outdoor temperature sensor 59 and then detected by the detecting unit 8c (Step S2).
  • the regulating unit 8b sets preliminarily-set temperature and preliminarily-set humidity as target temperature and target humidity, respectively.
  • Devices including e.g., the compressor 51 of the outdoor air-conditioning unit 5 and the radial fan motor 45 of the humidifier unit 4, are actuated based on the foregoing target values. Accordingly, the heating operation (i.e., humidifying heating operation) is executed.
  • the determining unit 8d subsequently determines whether or not the temperature, measured by the inhalation temperature sensor 25 and then detected by the detecting unit 8c, reaches the target temperature (Step S3). When determining that the temperature, measured by the inhalation temperature sensor 25 and then detected by the detecting unit 8c, reaches the target temperature, the determining unit 8d further determines whether or not the humidity, measured by the indoor humidity sensor 26 and then detected by the detecting unit 8c, reaches the target humidity (Step S4). When the determining unit 8d determines that the humidity, measured by the indoor humidity sensor 26 and then detected by the detecting unit 8c, does not reach the target humidity, the regulating unit 8b corrects/increases the target temperature by 1 degree Celsius (Step S5).
  • the regulating unit 8b When the determining unit 8d subsequently determines that the humidity, measured by the indoor humidity sensor 26 and then detected by the detecting unit 8c, reaches the target humidity (Step S6), the regulating unit 8b returns the new (corrected) target temperature to the previous target temperature (Step S7).
  • the cooling operation is activated based on temperatures that are measured by the inhalation temperature sensor 25 and the outdoor temperature sensor 59 and then detected by the detecting unit 8c (Step S12).
  • the regulating unit 8b sets the preliminarily-set temperature and the preliminarily-set humidity as target temperature and target humidity, respectively.
  • Devices including e.g., the compressor 51 of the outdoor air-conditioning unit 5, are actuated based on the foregoing target values. Accordingly, the cooling operation (i.e., dehumidifying cooling operation) is executed.
  • the determining unit 8d determines whether or not the temperature, measured by the inhalation temperature sensor 25 and then detected by the detecting unit 8c, reaches the target temperature (Step S13). When determining that temperature, measured by the inhalation temperature sensor 25 and then detected by the detecting unit 8c, reaches the target temperature, the determining unit 8d further determines whether or not humidity, measured by the indoor humidity sensor 26 and then detected by the detecting unit 8c, reaches the target humidity (Step S14). When the determining unit 8d determines that the humidity, measured by the indoor humidity sensor 26 and then detected by the detecting unit 8c, does not reach the target humidity, the regulating unit 8b corrects/decreases the target temperature by 1 degree Celsius (Step S 15).
  • the regulating unit 8b When the determining unit 8d subsequently determines that the humidity, measured by the indoor humidity sensor 26 and then detected by the detecting unit 8c, reaches the target humidity (Step S16), the regulating unit 8b returns the new (corrected) target temperature to the previous target temperature (Step S17).
  • the air conditioner 1 is configured not to set the PMV-based room temperature, satisfying the condition where a value of PMV is equal to zero, as the target temperature in both of the cooling and heating operations in order to achieve an energy-saving effect.
  • the air conditioner 1 in the cooling operation, the air conditioner 1 is controlled with the target temperature obtained by adding 0.5 degrees Celsius to the PMV-based room temperature satisfying the condition where a value of PMV is equal to zero.
  • the air conditioner 1 In the other hand, the air conditioner 1 is controlled with the target temperature obtained by subtracting 0.5 degrees Celsius from the PMV-based room temperature satisfying the condition where a value of PMV is equal to zero. Therefore, it is desirable to return the new (corrected) target temperature to the previous target temperature as early as possible when humidity reaches desired humidity in terms of pursuit of both energy saving and comfortableness.
  • airflow e.g., airflow direction and airflow amount
  • the present invention is useful as an air conditioner for achieving physical comfortableness based on both temperature and humidity at an earliest possible stage.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Air Conditioning Control Device (AREA)
EP08854193A 2007-11-28 2008-11-21 Appareil de climatisation Withdrawn EP2233849A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007307467A JP4479783B2 (ja) 2007-11-28 2007-11-28 空気調和機
PCT/JP2008/071192 WO2009069539A1 (fr) 2007-11-28 2008-11-21 Appareil de climatisation

Publications (1)

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EP2233849A1 true EP2233849A1 (fr) 2010-09-29

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EP08854193A Withdrawn EP2233849A1 (fr) 2007-11-28 2008-11-21 Appareil de climatisation

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US9416987B2 (en) 2013-07-26 2016-08-16 Honeywell International Inc. HVAC controller having economy and comfort operating modes
EP3767190A4 (fr) * 2018-03-14 2021-12-08 Kabushiki Kaisha Toshiba Dispositif de commande de climatisation, système de climatisation, procédé de commande de climatisation, et programme
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CN101878398A (zh) 2010-11-03
JP2009133499A (ja) 2009-06-18

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