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WO2018179137A1 - Dispositif de climatisation - Google Patents

Dispositif de climatisation Download PDF

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Publication number
WO2018179137A1
WO2018179137A1 PCT/JP2017/012900 JP2017012900W WO2018179137A1 WO 2018179137 A1 WO2018179137 A1 WO 2018179137A1 JP 2017012900 W JP2017012900 W JP 2017012900W WO 2018179137 A1 WO2018179137 A1 WO 2018179137A1
Authority
WO
WIPO (PCT)
Prior art keywords
compressor
temperature
heat exchanger
indoor
temperature sensor
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.)
Ceased
Application number
PCT/JP2017/012900
Other languages
English (en)
Japanese (ja)
Inventor
克也 竹内
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2019508425A priority Critical patent/JP6749471B2/ja
Priority to PCT/JP2017/012900 priority patent/WO2018179137A1/fr
Publication of WO2018179137A1 publication Critical patent/WO2018179137A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle

Definitions

  • the present invention relates to operation control of an air conditioner, and more particularly to control for improving the reliability of a compressor at the time of operation start.
  • the present invention has been made to solve the above-described problems.
  • the refrigerant discharge SH is increased by promoting gasification of the refrigerant in the compressor so that the refrigerant discharge SH becomes a predetermined value or more when the compressor is stopped. And to improve the reliability of the compressor.
  • An air conditioner includes a refrigerant circuit including a compressor, an outdoor heat exchanger, an expansion valve, an indoor heat exchanger, and a four-way valve that switches a flow direction of refrigerant in heating operation and cooling operation, Discharge pipe temperature sensor that detects the discharge pipe temperature of refrigerant discharged from the compressor or compressor temperature sensor that detects the outer shell temperature of the compressor and the temperature of the refrigerant in the gas-liquid two-phase state of the outdoor heat exchanger Outdoor heat exchanger two-phase temperature sensor, indoor heat exchanger two-phase temperature sensor for detecting the temperature of the refrigerant in the gas-liquid two-phase state of the indoor heat exchanger, and the temperature of the indoor air conditioned by the indoor heat exchanger And a control device that controls the compressor based on the difference between the indoor suction temperature detected by the indoor suction temperature sensor and the set temperature of the indoor air conditioning.
  • the compressor discharge SH calculated by subtracting the gas-liquid two-phase refrigerant temperature on the condenser side from the discharge refrigerant temperature is smaller than a predetermined threshold, the compressor operation is continued and the compressor heating means is turned on.
  • the compressor is operated when the discharge SH becomes a predetermined threshold value or more.
  • An air conditioner includes a compressor, an outdoor heat exchanger, an expansion valve, an indoor heat exchanger, a refrigerant circuit including a four-way valve that switches a flow direction of refrigerant in heating operation and cooling operation, and a compression circuit
  • a discharge pipe temperature sensor for detecting the discharge pipe temperature of the refrigerant discharged from the machine or a compressor temperature sensor for detecting the outer shell temperature of the compressor, and the temperature of the refrigerant in the gas-liquid two-phase state of the outdoor heat exchanger
  • a control device that controls the compressor based on a difference between the indoor suction temperature detected by the indoor suction temperature sensor and the set temperature of the indoor air conditioning.
  • FIG. 1 and 2 illustrate an air conditioner according to Embodiment 1 of the present invention.
  • FIG. 1 is a refrigerant circuit configuration diagram schematically showing the configuration of a refrigerant circuit
  • FIG. 2 is an air conditioner. It is a flowchart which shows the control flow explaining.
  • the air conditioner includes an outdoor unit 17 and an indoor unit 18 that are connected to each other by a refrigerant pipe.
  • the outdoor unit 17 includes an outdoor unit that exchanges heat between the compressor 1 that can change the operating frequency (compressor operating frequency) for compressing the refrigerant, the four-way valve 2 for switching the flow direction of the refrigerant, and the outdoor air.
  • a heat exchanger 3, an outdoor fan 4 that supplies outdoor air toward the outdoor heat exchanger 3, and an expansion valve 5 that expands the refrigerant are provided.
  • the indoor unit 18 is provided with an indoor heat exchanger 6 that exchanges heat with indoor air, and an indoor fan 7 that supplies indoor air toward the indoor heat exchanger 6.
  • the outdoor unit 17 and the indoor unit 16 are pipe-connected by the gas side connection piping 20 and the liquid side connection piping 21, and a refrigerant
  • coolant circulates.
  • the refrigerant is, for example, a single HFO refrigerant such as HFO-1234yf, or a mixed refrigerant of an HFO refrigerant and an HFC refrigerant such as R32.
  • the refrigerant discharged from the compressor 1 flows in the order of the four-way valve 2, the outdoor heat exchanger 3, the expansion valve 5, and the indoor heat exchanger 6, and again.
  • a refrigerant circuit that returns from the refrigerant container 8 to the compressor 1 via the four-way valve 2 is formed, and a refrigeration cycle is executed.
  • the refrigerant discharged from the compressor 1 flows in the order of the four-way valve 2, the indoor heat exchanger 6, the expansion valve 5, and the outdoor heat exchanger 3, and again passes through the four-way valve 2.
  • a refrigerant circuit returning to the compressor 1 is formed, and the refrigeration cycle is executed.
  • the remote controller 22, the indoor control device 10 of the indoor unit 18, and the outdoor control device 9 of the outdoor unit 17 are connected by a communication line so that operation control information is transmitted / received to / from each other so as to satisfy user setting conditions. Air conditioning control is performed.
  • the outdoor unit 17 includes a compressor temperature sensor 11 for detecting an outer shell temperature of the compressor 1, a discharge pipe temperature sensor 12 for detecting a discharge pipe temperature Td as a discharge refrigerant temperature, and a gas-liquid in the outdoor heat exchanger 3.
  • An outdoor heat exchanger two-phase temperature sensor 13 for detecting the temperature of the refrigerant in the two-phase state is provided.
  • the indoor unit 18 includes an indoor heat exchanger two-phase temperature sensor 14 for detecting the temperature of the refrigerant in the gas-liquid two-phase state in the indoor heat exchanger 6, and an indoor suction temperature sensor for detecting the temperature of the indoor air. 15 is provided.
  • the outdoor control device 9 has a compressor operation continuation means inside, and includes a compressor temperature sensor 11, a discharge pipe temperature sensor 12, an outdoor heat exchanger two-phase temperature sensor 13, and an indoor heat exchanger two-phase temperature sensor 14.
  • the compressor discharge SH discharge refrigerant superheat degree
  • the compressor discharge SH is calculated sequentially while the compressor operation is continued using each temperature detected from the above, and the operation is performed so that the compressor discharge SH becomes a certain level or more when the operation is stopped. Control.
  • the outdoor control device 9 has a compressor heating control means inside, and controls the operation of the compressor heating means 16 provided to raise the discharge SH by heating the compressor 1 during the air conditioning operation. .
  • the compressor heating means 16 may be a control means for increasing the current only to promote heat generation without changing the operating rotational speed of the compressor for air conditioning by the outdoor control device 9, or a heating wire is connected to the outer shell of the compressor.
  • An electric heater heating means that heats by winding and energizing may be used, or both of them may be combined.
  • the compressor heating means 16 by the control means is configured such that Joule heat is generated higher than usual by changing the current to be supplied to each phase of the electric motor of the compressor 1.
  • FIG. 2 is a control flow according to Embodiment 1 of the present invention.
  • FIG. 2 describes a case where the air conditioner is thermo-ON or thermo-OFF based on the set temperature set by the user from the remote controller 22 and the indoor suction temperature detected by the indoor suction temperature sensor 15. Since the same applies to the case where the user stops the air-conditioning operation from the remote controller 22, the description is omitted.
  • the user transmits an operation start instruction (operation ON instruction) from the remote controller 22 (S1).
  • the indoor control device 10 and the outdoor control device 9 receive the operation start instruction from the remote controller 22 and make a thermo-ON determination. For example, in the cooling operation, if the indoor suction temperature detected by the indoor suction temperature sensor 15 is higher than the set temperature from the remote controller 22, the cooling thermo-ON is established, while in the heating operation, the indoor suction temperature sensor 15 When the detected indoor suction temperature is lower than the set temperature from the remote controller 22, the heating thermo-ON is established (S2).
  • thermo-ON determination the operation of the compressor 1 is started (S3).
  • the outdoor fan 4 and the indoor fan 7 start to operate, but the description of the actuator operations other than the compressor 1 is omitted.
  • the indoor control device 10 and the outdoor control device 9 always perform the thermo-OFF determination during the operation of the compressor 1 (S4). For example, in the cooling operation, the compressor 1 is operated until the indoor suction temperature detected by the indoor suction temperature sensor 15 becomes equal to or lower than the set temperature of the remote controller 22, and the indoor suction temperature detected by the indoor suction temperature sensor 15 is When the temperature is lower than the set temperature of the remote controller 22, it is determined that the thermo-OFF is established.
  • the outdoor control device 9 calculates the compressor discharge SH again.
  • the outdoor heat exchanger two-phase temperature sensor 13 starts from the higher one of the compressor shell temperature detected by the compressor shell temperature sensor 11 and the discharge refrigerant temperature detected by the discharge pipe temperature sensor 12. It is calculated as a value obtained by subtracting the outdoor heat exchanger two-phase temperature, which is the detected refrigerant condensation saturation temperature of the condenser.
  • it is calculated as a value obtained by subtracting the indoor heat exchanger two-phase temperature detected by the indoor heat exchanger two-phase temperature sensor 14 from the higher one of the compressor shell temperature and the discharged refrigerant temperature.
  • the outdoor control device 9 determines whether or not the calculated compressor discharge SH is greater than or equal to a preset threshold value (S5). For example, if the preset threshold value is 10 deg, if the compressor discharge SH ⁇ 10 deg, the determination of YES is made and the operation of the compressor 1 is stopped (S7), and the determination of NO, the compressor discharge SH ⁇ 10 deg. In this case, the compressor is continuously operated.
  • the outdoor control device 9 transmits an operation command to the compressor heating means 16 while the operation of the compressor is continued, and the compressor heating operation is performed. (S6).
  • the outdoor controller 9 performs the compressor discharge SH determination (S5) during the operation, continues the compressor heating operation until the compressor discharge SH ⁇ 10 deg (threshold), and the compressor discharge SH to be measured and calculated is When it becomes 10 degrees or more, the operation of the compressor 1 is stopped (S7).
  • thermo OFF determination (S4) is performed, and based on the determination result, the process proceeds to the discharge SH determination (S5) of the next step, and the compressor heating ON (S6) operation is executed by this discharge SH determination.
  • the control flow for determining whether or not to perform the control is described, but the discharge SH determination (S5) is performed at the stage before the thermo OFF determination (S4) is confirmed, and the compressor heating ON (S6) is performed in accordance with the determination.
  • a flow may be used, and the discharge SH can rise and reach a predetermined threshold value or faster.
  • the compressor heating ON (S6) is turned on. It may be executed, or the remaining operation time that will reach the thermo-OFF is calculated from the time change rate of this temperature difference, and the compressor heating is turned on when reaching 5 minutes before reaching the thermo-off. But it ’s okay.
  • the compressor oil concentration in the compressor is always maintained at a predetermined value when the compressor 1 is stopped, and the compressor 1 is driven. Since the sealing performance of the mechanism with the refrigerating machine oil can be ensured, the reliability of the compressor can be improved.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

L'invention concerne un dispositif de climatisation comprenant: un capteur de température de tuyau de refoulement qui détecte la température d'un tuyau de refoulement pour un fluide frigorigène refoulé d'un compresseur ou d'un capteur de température de compresseur qui détecte la température d'une coque externe du compresseur; un capteur de température à deux phases d'échangeur de chaleur extérieur qui détecte la température d'un fluide frigorigène à deux phases gaz-liquide de l'échangeur de chaleur extérieur; un capteur de température à deux phases d'échangeur de chaleur intérieur qui détecte la température d'un fluide frigorigène à deux phases gaz-liquide de l'échangeur de chaleur intérieur; un capteur de température d'admission intérieure qui détecte la température de l'air intérieur qui a été climatisé par l'échangeur de chaleur intérieur; et un dispositif de commande qui commande le compresseur sur la base de la différence de la température d'admission intérieure détectée par le capteur de température d'admission intérieure et de la température de consigne pour une climatisation intérieure. S'il est déterminé que le thermostat est arrêté sur la base de la température d'admission intérieure et de la température de consigne, alors le dispositif de commande poursuit l'opération de compresseur et actionne des moyens de chauffage de compresseur lorsque le refoulement de compresseur SH, calculé par soustraction de la température de fluide frigorigène à deux phases gaz-liquide sur un côté condenseur à partir de la température de fluide frigorigène déchargé, est inférieur à une valeur seuil prescrite et arrête le compresseur si le refoulement SH est supérieur ou égal à la valeur seuil prescrite.
PCT/JP2017/012900 2017-03-29 2017-03-29 Dispositif de climatisation Ceased WO2018179137A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2019508425A JP6749471B2 (ja) 2017-03-29 2017-03-29 空気調和装置
PCT/JP2017/012900 WO2018179137A1 (fr) 2017-03-29 2017-03-29 Dispositif de climatisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/012900 WO2018179137A1 (fr) 2017-03-29 2017-03-29 Dispositif de climatisation

Publications (1)

Publication Number Publication Date
WO2018179137A1 true WO2018179137A1 (fr) 2018-10-04

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PCT/JP2017/012900 Ceased WO2018179137A1 (fr) 2017-03-29 2017-03-29 Dispositif de climatisation

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JP (1) JP6749471B2 (fr)
WO (1) WO2018179137A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111322729A (zh) * 2018-12-17 2020-06-23 浙江盾安自控科技有限公司 空调控制方法、装置、系统、设备和存储介质
CN111780382A (zh) * 2020-07-15 2020-10-16 海信（山东）空调有限公司 一种空调器
CN112352991A (zh) * 2020-11-18 2021-02-12 青岛海信日立空调系统有限公司 一种烟草烘干机和烟草烘干机电加热的控制方法
JPWO2022059149A1 (fr) * 2020-09-17 2022-03-24
WO2024204186A1 (fr) * 2023-03-29 2024-10-03 株式会社富士通ゼネラル Dispositif à cycle frigorifique
JP7595822B1 (ja) * 2024-05-15 2024-12-06 三菱電機株式会社 冷凍サイクル装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007263440A (ja) * 2006-03-28 2007-10-11 Mitsubishi Electric Corp 空気調和装置
JP2011196272A (ja) * 2010-03-19 2011-10-06 Daikin Industries Ltd スクリュー圧縮機
JP2014122769A (ja) * 2012-12-21 2014-07-03 Daikin Ind Ltd 冷凍装置
WO2017006452A1 (fr) * 2015-07-08 2017-01-12 三菱電機株式会社 Dispositif de conditionnement d'air

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4636918Y1 (fr) * 1969-03-18 1971-12-20

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007263440A (ja) * 2006-03-28 2007-10-11 Mitsubishi Electric Corp 空気調和装置
JP2011196272A (ja) * 2010-03-19 2011-10-06 Daikin Industries Ltd スクリュー圧縮機
JP2014122769A (ja) * 2012-12-21 2014-07-03 Daikin Ind Ltd 冷凍装置
WO2017006452A1 (fr) * 2015-07-08 2017-01-12 三菱電機株式会社 Dispositif de conditionnement d'air

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111322729A (zh) * 2018-12-17 2020-06-23 浙江盾安自控科技有限公司 空调控制方法、装置、系统、设备和存储介质
CN111780382A (zh) * 2020-07-15 2020-10-16 海信（山东）空调有限公司 一种空调器
JPWO2022059149A1 (fr) * 2020-09-17 2022-03-24
WO2022059149A1 (fr) * 2020-09-17 2022-03-24 三菱電機株式会社 Dispositif à cycle frigorifique, climatiseur le comprenant et procédé de commande de dispositif à cycle frigorifique
JP7387018B2 (ja) 2020-09-17 2023-11-27 三菱電機株式会社 冷凍サイクル装置及びそれを備える空気調和機、並びに冷凍サイクル装置の制御方法
CN112352991A (zh) * 2020-11-18 2021-02-12 青岛海信日立空调系统有限公司 一种烟草烘干机和烟草烘干机电加热的控制方法
CN112352991B (zh) * 2020-11-18 2022-12-06 青岛海信日立空调系统有限公司 一种烟草烘干机和烟草烘干机电加热的控制方法
WO2024204186A1 (fr) * 2023-03-29 2024-10-03 株式会社富士通ゼネラル Dispositif à cycle frigorifique
JP2024141183A (ja) * 2023-03-29 2024-10-10 株式会社富士通ゼネラル 冷凍サイクル装置
JP7647786B2 (ja) 2023-03-29 2025-03-18 株式会社富士通ゼネラル 冷凍サイクル装置
JP7595822B1 (ja) * 2024-05-15 2024-12-06 三菱電機株式会社 冷凍サイクル装置

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JPWO2018179137A1 (ja) 2019-11-07
JP6749471B2 (ja) 2020-09-02

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