WO2016170668A1 - 空気調和機 - Google Patents
空気調和機 Download PDFInfo
- Publication number
- WO2016170668A1 WO2016170668A1 PCT/JP2015/062476 JP2015062476W WO2016170668A1 WO 2016170668 A1 WO2016170668 A1 WO 2016170668A1 JP 2015062476 W JP2015062476 W JP 2015062476W WO 2016170668 A1 WO2016170668 A1 WO 2016170668A1
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- WIPO (PCT)
- Prior art keywords
- refrigerant
- air
- evaporator
- fan
- air conditioner
- Prior art date
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Classifications
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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
- F24F11/76—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 means responsive to temperature, e.g. bimetal springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
-
- 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
-
- 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
- F24F11/89—Arrangement or mounting of control or safety devices
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/19—Calculation of parameters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/11—Fan speed control
- F25B2600/112—Fan speed control of evaporator fans
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2116—Temperatures of a condenser
- F25B2700/21163—Temperatures of a condenser of the refrigerant at the outlet of the condenser
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21171—Temperatures of an evaporator of the fluid cooled by the evaporator
- F25B2700/21172—Temperatures of an evaporator of the fluid cooled by the evaporator at the inlet
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21174—Temperatures of an evaporator of the refrigerant at the inlet of the evaporator
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21175—Temperatures of an evaporator of the refrigerant at the outlet of the evaporator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Definitions
- This invention relates to an air conditioner adopting a heat pump system.
- an air conditioner adopting a heat pump system is composed of a compressor, a condenser, an expansion valve and an evaporator, piping for circulating the refrigerant by connecting them, and a blower.
- the refrigerant is compressed in the compressor, sent to the condenser as a high-pressure gas state, condensed in the condenser, sent to the expansion valve as a high-pressure liquid state, and expanded and depressurized in the expansion valve.
- the low-temperature gas-liquid two-phase state is sent to the evaporator, the refrigerant is evaporated in the evaporator, and the low-pressure gas state is sent again to the compressor to adjust the indoor temperature using the refrigeration cycle.
- the room is cooled by an evaporator.
- the air is configured to pass through the evaporator by a blower.
- the air flow is determined by the user. For example, there is a case where it is desired to exert a predetermined air volume and capacity by calculating the indoor heat load. However, when a duct is connected, a desired air flow rate may not be exhibited due to the air path pressure loss of the duct.
- the amount of air flow that is reduced by calculating the air path pressure loss of the duct in advance is predicted, and the air amount is set to be increased.
- the amount of air flow is predicted from the load applied to the motor of the blower, and feedback is applied to the motor so as to obtain a predetermined amount of air flow.
- the desired air flow rate may not be exhibited due to the air path pressure loss of the duct, or complicated control parameters are set so that feedback can be applied in advance based on the relationship between the motor load and air flow rate. There was a need to do.
- the present invention has been made to solve the above-described problems, and an object thereof is to provide an air conditioner that can be adjusted to a predetermined air volume without grasping duct pressure loss, motor characteristics, and fan characteristics. .
- An air conditioner includes a refrigerant circuit in which a compressor that compresses a refrigerant, a condenser that condenses the refrigerant, an expansion valve that depressurizes, and an evaporator that evaporates are connected by a pipe that circulates the refrigerant.
- a blower for blowing air to the evaporator;
- a controller for controlling the operation of the compressor, the expansion valve and the blower, and In the memory of the controller, data indicating the relationship between the heat exchange efficiency of the condenser and the evaporator and the blast volume is stored. The controller calculates the air flow rate of the blower from the heat exchange efficiency and the state of the refrigeration cycle based on the data.
- the controller can calculate the air flow rate from the heat exchange efficiency and the state of the refrigeration cycle using the table described above, and can adjust the air flow rate based on the calculation result.
- the blower it is possible to adjust the air flow to a predetermined level without grasping duct pressure loss, motor characteristics, and fan characteristics.
- FIG. 1 is a schematic diagram showing a configuration of an air conditioner according to the present embodiment.
- This air conditioner includes a refrigerant circuit (composed of a compressor 1, a condenser 2, an expansion valve 3, an evaporator 4 and a pipe 20), a fan 5, a motor 6, a controller 7, a pressure measuring sensor 8, and a temperature measuring sensor 9. To 11 and an intake air state measuring sensor 12.
- the compressor 1 sucks low-pressure gas refrigerant and compresses it into a high-pressure gas refrigerant.
- the compressor 1 may be capable of arbitrarily changing the operating frequency by inverter control, or may be a constant speed that cannot change the operating frequency.
- the condenser 2 condenses the refrigerant in a high-pressure gas state into a refrigerant in a high-pressure liquid state by exchanging heat with an external fluid.
- the external fluid used for heat exchange may be a gas such as air or a liquid such as water.
- the expansion valve 3 expands and decompresses the high-pressure liquid refrigerant into the low-pressure gas-liquid two-phase refrigerant. Needless to say, it can be replaced if there is a similar effect.
- an electronic expansion valve or a capillary tube may be used.
- the evaporator 4 evaporates the low-pressure gas-liquid two-phase refrigerant flowing from the expansion valve 3 into a low-pressure gas refrigerant by exchanging heat with air, and returns the refrigerant to the compressor.
- the fan 5 is for sending air to the evaporator 4 to exchange heat between the air and the low-pressure gas-liquid two-phase refrigerant of the evaporator 4.
- the type of fan may be a sirocco fan or a plug fan.
- a push-in method or a pulling method may be used.
- the motor 6 is for driving the fan 5.
- the motor is capable of controlling the rotational speed for adjusting the air flow rate, but it is needless to say that the motor can be replaced if the same effect can be obtained.
- the pressure measuring sensor 8 measures the pressure of the condenser 2.
- the temperature measuring sensor 9 measures the outlet temperature of the condenser 2.
- the temperature measuring sensor 10 measures the heat exchanger temperature Te of the evaporator 4.
- the temperature measuring sensor 11 measures the outlet temperature of the evaporator 4.
- the suction air state measurement sensor 12 measures the dry bulb temperature and wet bulb temperature of the air flowing into the evaporator 4. If the wet bulb temperature cannot be measured, the relative humidity may be measured, and the wet bulb temperature may be calculated based on the air physical property data stored in the memory (not shown) of the controller 7.
- the controller 7 is constituted by a microcomputer, and data indicating air physical properties, refrigerant physical properties, and capacity calculation formulas are stored in a non-volatile memory or the like, and the heat exchange efficiency ⁇ and the air flow rate GA as shown in Table 1 below are stored. Table data indicating the relationship is stored.
- the controller 7 obtained from the sensors 8 to 12 in order to produce the refrigerant circulation amount Gr according to the predetermined refrigeration cycle (entrance / entrance enthalpy of the evaporator 4 and outlet enthalpy of the evaporator 4) and capacity shown in FIG.
- the compressor 1 and the expansion valve 3 are controlled based on the pressure / temperature data, the blown air amount is calculated, and the fan 5 is driven by controlling the motor 6 until a predetermined blown air amount is obtained.
- controller 7 can be replaced with a device other than the microcomputer as long as the same effect can be obtained. Moreover, the controller 7 may be provided in either the indoor unit or the outdoor unit, or may be provided in both.
- the controller 7 calculates the condenser temperature based on the refrigerant physical property data stored in the memory, based on the condenser pressure PCm obtained by the pressure measuring sensor 8.
- the controller 7 calculates the degree of supercooling SCm based on the condenser outlet temperature and the condenser temperature obtained by the temperature measuring sensor 9.
- the controller 7 calculates the evaporator pressure Pe using the refrigerant physical property data stored in the memory based on the heat exchanger temperature Te obtained by the temperature measuring sensor 10.
- the evaporator pressure Pe is used for calculating the refrigerant circulation amount Gr.
- the refrigerant circulation amount Gr is expressed by the following equation (1) by the displacement volume V of the compressor 1 and the density ⁇ of the refrigerant to be compressed.
- the displacement volume V of the compressor is determined by the compressor used, and the density ⁇ of the refrigerant to be compressed is calculated from the refrigerant physical property data stored in the memory by the controller 7 based on the evaporator pressure Pe.
- the controller 7 calculates the degree of superheat SHm based on the evaporator outlet temperature obtained by the temperature measurement sensor 11 and the heat exchanger temperature Te described above. Further, the controller 7 calculates the intake air enthalpy based on the air dry bulb temperature, the wet bulb temperature obtained by the intake air state measurement sensor 12 and the air physical property data stored in the memory.
- the refrigerant used in the air conditioner only needs to be able to use the refrigeration cycle.
- a single refrigerant such as R22, a mixed refrigerant such as R410A, or a natural refrigerant such as CO2 may be used.
- this air conditioner does not need to be configured only with the members shown in FIG.
- a liquid reservoir accumulator
- an oil separator may be provided to recover the refrigerator oil.
- FIG. 3 is a flowchart showing the flow of processing during the cooling operation of the air conditioner.
- the controller 7 determines whether or not the set air flow rate is obtained based on the preset evaporation capacity Qe and the air flow rate GA (steps S1 to S3), and if the controller 7 is away from the set air flow rate (step S4). No), the air flow rate is adjusted, and the refrigeration cycle is changed to satisfy the evaporation capacity Qe (steps S5 to S7).
- the evaporation capacity Qe is expressed by the following equation (2) using the refrigerant circulation amount Gr and the evaporator inlet / outlet enthalpy difference ⁇ Hr.
- ⁇ Hr evaporator inlet / outlet enthalpy difference
- ⁇ Hr is a value limited by the refrigerant, and therefore, in the following, a case where R410A is used is shown as an example.
- ⁇ Hr is generally about 150 to 200 kJ / kg from the viewpoint of unit protection. Therefore, ⁇ Hr is controlled to be, for example, 175 kJ / kg.
- the standard outdoor temperature is about 35 ° C., and when the condenser 2 is placed outdoors and installed to exchange heat with air, the temperature of the condenser 2 is 35 for heat exchange. More than °C is necessary. Although it is better that there is a temperature difference, the condenser pressure PCm is preferably about 30 kgf / Cm2G from the viewpoint of unit protection. At this time, the temperature of the condenser is about 50 ° C.
- the evaporator outlet enthalpy Hro is also limited by the refrigerant. From the viewpoint of unit protection, the pressure and superheat range are almost the same value, which is about 425 KJ / kg.
- the target superheat SHm is preferably about 2-5 ° C from the viewpoint of unit protection. Here, it is set to 2 ° C.
- the compressor 1 may be controlled to satisfy this Gr.
- the frequency may be changed.
- the temperature difference required to bring the refrigerant circulation amount Gr flowing into the evaporator to the state of the superheat degree SHm is determined by the heat exchange efficiency ⁇ . This is because the higher the efficiency of the heat exchanger, the more refrigerant can be evaporated. Further, the efficiency of the heat exchanger is determined by the size of the heat exchanger and the amount of air blown. The larger the heat exchanger and the greater the amount of blast, the higher the efficiency of the heat exchanger. The efficiency of the heat exchanger is expressed by GA ⁇ ⁇ from the heat exchange efficiency ⁇ and the air flow rate GA.
- the evaporation capacity is expressed by the following equation (3) using the heat exchange efficiency.
- Qe GA ⁇ ⁇ ⁇ ⁇ hA ----- (3)
- Qe is the evaporation capacity
- GA is the air flow rate
- ⁇ is the heat exchange efficiency
- ⁇ hA is the air enthalpy difference.
- the enthalpy difference is the enthalpy difference when the air in state A becomes the air in state C, indicating that the sucked air is completely cooled to the heat exchanger temperature. ing. However, in reality, all of the sucked air is not cooled to the heat exchanger temperature, and only the state B in FIG. 5 is obtained. At this time, the enthalpy difference between the state A and the state B is represented by ⁇ ⁇ ⁇ hA.
- the efficiency of the heat exchanger is determined by the size of the heat exchanger and the air flow rate.
- the relationship between the heat exchange efficiency ⁇ and the blown air amount GA can be grasped in advance by desk calculations or tests.
- the relationship as shown in Table 1 is obtained for each heat exchanger, and the data of the table is stored in the memory of the controller 7 to determine the air flow rate. It is not necessary to be concerned with the table as shown in Table 1, and it may be given by an approximate expression.
- the reason for dividing by 60 and 0.83 m 3 / kg is to convert the volume flow rate into a mass flow rate in units.
- 0.83 m3 / kg is a specific volume of general air.
- the state A of the intake air is found to be 27 ° C. dry bulb and 19 ° C. wet bulb by the intake air state measurement sensor 12.
- the enthalpy hAA in the state A can be calculated as 53.8 kJ / kg by the controller 7 from the air physical properties.
- the heat exchanger temperature Te_cal can be calculated to be 5.8 ° C.
- the air diagram at this time is shown in FIG.
- Te obtained by the intake air state measurement sensor 12 is compared with Te_cal obtained by calculation. From the accuracy of a general temperature sensor, when the difference between Te and Te_cal is 0.5 ° C. or more, it is determined that the blowing rate is different from the set value. Of course, since the accuracy differs depending on the sensor, a value other than 0.5 ° C. may be used as the determination value.
- Te_cal is 5.8 ° C., so the value is 0.8 ° C. lower. This indicates that the efficiency of the heat exchanger is lower than that obtained from the set air flow rate. That is, the actual air flow rate is smaller than the set air flow rate, and it is necessary to increase the air flow rate by increasing the rotational speed of the fan 5.
- the air flow rate can be adjusted to the set value by checking the value of Te each time.
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Abstract
Description
前記蒸発器に空気を送風する送風機と、
前記圧縮機、膨張弁および送風機の動作を制御するコントローラと、を備え、
当該コントローラのメモリには、前記凝縮器および蒸発器の熱交換効率と送風量の関係を示すデータが格納され、
前記コントローラは、前記データに基づき、熱交換効率と冷凍サイクルの状態から前記送風機の送風量を計算することを特徴とする。
ここで、圧縮機の押しのけ容積Vは用いた圧縮機により決まり、圧縮される冷媒の密度ρは、蒸発器圧力Peを基にコントローラ7がメモリに格納された冷媒物性のデータから演算する。
ここで、蒸発器出入口エンタルピ差ΔHrは冷媒により制限される値であるため、以下では、一例として、R410Aを用いた場合を示す。ΔHrはユニット保護の観点から150~200kJ/kg程度が一般的な値となる。そこでΔHrを例えば175kJ/kgとなるように制御する。
Hri=Hro-ΔHr
=425KJ/kg-175KJ/kg
=250KJ/kg
となる。PCmが30kgf/Cm2Gであるため、凝縮器出口の冷媒温度が31℃である必要がある。
SCm=50℃-31℃=19℃
となる。
Gr=Qe/ΔHr
=28kW/175kJ/kg
=0.16kg/s
となるため、このGrを満たすように圧縮機1を制御してやればよい。例えば回転数制御型であれば、周波数を変化させればよい。
ここで、Qeは蒸発能力、GAは送風量、εは熱交換効率、ΔhAは空気エンタルピ差である。
ΔhA=Qe/(GA×ε)
=28kW/((60m3/min/60/0.83m3/kg)×0.69)
=33.7kJ/kg
となる。ここで、60と0.83m3/kgで除算しているのは体積流量を質量流量へと単位換算するためである。また0.83m3/kgは一般的な空気の比容積である。
hAC=hAA-ΔhA
=53.8kJ/kg-33.7kJ/kg
=20.1kJ/kg
となる。コントローラ7のメモリに格納された空気物性のデータから熱交換器温度Te_calは5.8℃であると演算できる。この時の空気線図を図6に示す。
2 凝縮器
3 膨張弁
4 蒸発器
5 ファン
6 モータ
7 コントローラ
8 圧力測定用センサ
9~11 温度測定用センサ
12 吸込空気状態測定用センサ
Claims (3)
- 冷媒を圧縮する圧縮機、冷媒を凝縮する凝縮器、減圧する膨張弁および蒸発する蒸発器が、冷媒を循環させる配管で連結された冷媒回路と、
前記蒸発器に空気を送風する送風機と、
前記圧縮機、膨張弁および送風機の動作を制御するコントローラと、を備え、
当該コントローラのメモリには、前記凝縮器および蒸発器の熱交換効率と送風量の関係を示すデータが格納され、
前記コントローラは、前記データに基づき、熱交換効率と冷凍サイクルの状態から前記送風機の送風量を計算することを特徴とする空気調和機。 - 前記送風機は、ファンとモータが直結されている、請求項1に記載の空気調和機。
- 前記送風機は、ファンとモータがプーリまたはベルトを介して間接的に接続されている請求項1に記載の空気調和機。
Priority Applications (3)
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GB1711575.9A GB2553422B (en) | 2015-04-24 | 2015-04-24 | Air-conditioning apparatus |
PCT/JP2015/062476 WO2016170668A1 (ja) | 2015-04-24 | 2015-04-24 | 空気調和機 |
JP2017513925A JP6385568B2 (ja) | 2015-04-24 | 2015-04-24 | 空気調和機 |
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PCT/JP2015/062476 WO2016170668A1 (ja) | 2015-04-24 | 2015-04-24 | 空気調和機 |
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JP (1) | JP6385568B2 (ja) |
GB (1) | GB2553422B (ja) |
WO (1) | WO2016170668A1 (ja) |
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CN110440406A (zh) * | 2019-08-05 | 2019-11-12 | 珠海格力电器股份有限公司 | 一种风机控制方法、装置及机组设备 |
WO2023145016A1 (ja) * | 2022-01-28 | 2023-08-03 | 三菱電機株式会社 | 診断装置およびそれを有する冷凍サイクル装置 |
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GB201711575D0 (en) | 2017-08-30 |
JPWO2016170668A1 (ja) | 2017-11-30 |
GB2553422A (en) | 2018-03-07 |
JP6385568B2 (ja) | 2018-09-05 |
GB2553422B (en) | 2020-08-19 |
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