WO2017187483A1 - Unité intérieure et appareil de climatisation - Google Patents

Unité intérieure et appareil de climatisation Download PDF

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Publication number
WO2017187483A1
WO2017187483A1 PCT/JP2016/062918 JP2016062918W WO2017187483A1 WO 2017187483 A1 WO2017187483 A1 WO 2017187483A1 JP 2016062918 W JP2016062918 W JP 2016062918W WO 2017187483 A1 WO2017187483 A1 WO 2017187483A1
Authority
WO
WIPO (PCT)
Prior art keywords
refrigerant
air
indoor unit
concentration
blower fan
Prior art date
Application number
PCT/JP2016/062918
Other languages
English (en)
Japanese (ja)
Inventor
孝典 小池
森本　修
万誉 篠崎
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2018513957A priority Critical patent/JPWO2017187483A1/ja
Priority to PCT/JP2016/062918 priority patent/WO2017187483A1/fr
Publication of WO2017187483A1 publication Critical patent/WO2017187483A1/fr

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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
    • 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
    • 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

  • the present invention relates to an indoor unit and an air conditioner, and more particularly to an indoor unit and an air conditioner that are applied to a multi air conditioner for buildings.
  • an indoor unit of an air conditioning apparatus is provided on a wall surface of a building, and an exhaust port is disposed below the indoor unit.
  • coolants such as propane with larger specific gravity than air
  • coolant leakage can be performed effectively.
  • ventilation at the time of refrigerant leakage can be performed more effectively by providing a blower fan outside the exhaust port.
  • Patent Document 1 does not have a function for ventilating the indoor unit itself, and the leaked combustible refrigerant is naturally exhausted outside by the convection of air generated in the room. I have to wait for it.
  • the present invention has been made in view of the above-described problems in the prior art, and it is not necessary to provide an exhaust port separately, and an indoor unit and an air conditioner that can suppress the danger caused by a flammable refrigerant.
  • the purpose is to provide.
  • the indoor unit of the present invention is an indoor unit of an air conditioner that is connected to an outdoor unit by a pipe and through which the refrigerant flowing in the outdoor unit and the pipe flows, and a blower fan that takes in outdoor air, and a refrigerant in an air-conditioning target space
  • a refrigerant detection sensor that detects a concentration
  • a control device that controls a rotation speed of the blower fan, wherein the control device is configured such that the refrigerant concentration is equal to or higher than a predetermined concentration based on a detection result by the refrigerant detection sensor.
  • FIG. 4 is a flowchart illustrating an example of a flow of a refrigerant concentration reduction process in the air-conditioning apparatus according to Embodiment 1.
  • Embodiment 1 FIG.
  • This air conditioner is installed in, for example, a building, a condominium, etc., and performs cooling operation or heating operation by taking in external air (hereinafter referred to as “outdoor air” as appropriate) and adjusting the temperature.
  • outdoor air external air
  • concentration is reduced by taking in outdoor air to the room
  • FIG. 1 is a schematic diagram illustrating an example of the configuration of the air-conditioning apparatus 1 according to Embodiment 1.
  • the air conditioner 1 includes an indoor unit 2 and an outdoor unit 3 as a heat source side unit.
  • the indoor unit 2 and the outdoor unit 3 are connected by a refrigerant pipe 4, and form a heat exchange cycle such as a refrigeration cycle by the inside of a combustible refrigerant such as R32 circulating.
  • a case where one indoor unit 2 is connected to one outdoor unit 3 is shown, but the present invention is not limited to this.
  • a plurality of indoor units are connected to one outdoor unit 3. 2 may be connected.
  • the outdoor unit 3 is installed, for example, on the rooftop of the building 5.
  • the outdoor unit 3 includes a compressor, a refrigerant flow switching device, a heat source side heat exchanger, and the like (not shown), which are connected by piping.
  • the indoor unit 2 is installed on, for example, a ceiling or a wall surface of the building 5 and communicates with the outside via an intake port 11 for taking in external air (hereinafter referred to as “outdoor air” as appropriate). Moreover, the indoor unit 2 is connected to the duct 6 with the air outlet 12 communicating with the room.
  • the indoor unit 2 includes a use side heat exchanger 13, a blower fan 14, one or a plurality of refrigerant detection sensors 15, and a control device 16.
  • the use side heat exchanger 13 is provided between the inlet 11 and the outlet 12.
  • the use side heat exchanger 13 is connected to the outdoor unit 3 by the refrigerant pipe 4 and adjusts the temperature of the sucked air by exchanging heat between the air sucked from the suction port 11 and the refrigerant.
  • the use-side heat exchanger 13 cools air by heat exchange performed between the two-phase refrigerant and, for example, low-temperature and low-pressure two-phase refrigerant flows through the refrigerant pipe 4 during the cooling operation.
  • the use side heat exchanger 13 heats air by heat exchange performed between the gas refrigerant and the high-temperature and high-pressure gas refrigerant, for example, flows through the refrigerant pipe 4 during the heating operation.
  • the rotation speed of the blower fan 14 is controlled by a control device 16 to be described later, sucks outdoor air from the suction port 11, and blows it in the direction of the blowout port 12.
  • the refrigerant detection sensor 15 is for detecting the refrigerant concentration in the surrounding air.
  • three refrigerant detection sensors 15A to 15C are provided as the refrigerant detection sensor 15. These refrigerant detection sensors 15A to 15C detect the refrigerant concentration in the air and supply a detection signal indicating the detection result to the control device 16.
  • the refrigerant detection sensor 15 ⁇ / b> A is provided at the outlet 12 in the indoor unit 2, for example, and detects the concentration of the refrigerant mixed in the air exhausted from the indoor unit 2.
  • the refrigerant detection sensor 15B is provided, for example, in a remote controller (hereinafter referred to as “remote controller” as appropriate) 7 provided in the room for operating the air conditioner 1, and detects the concentration of the refrigerant mixed in the room air.
  • the refrigerant detection sensor 15C is provided, for example, indoors and detects the concentration of the refrigerant mixed in the room air.
  • the three refrigerant detection sensors 15A to 15C are not necessarily provided.
  • at least one of the refrigerant detection sensors 15A to 15C may be provided.
  • the control device 16 controls each device provided in each of the indoor unit 2 and the outdoor unit 3 in the air conditioner 1. For example, the control device 16 controls the rotational speed of the blower fan 14 and controls the flow rate of outdoor air taken into the indoor unit 2.
  • the control device 16 when the control device 16 receives a detection signal from the refrigerant detection sensor 15, whether or not the refrigerant concentration of the indoor air indicated by the detection result exceeds a preset concentration (hereinafter referred to as “set concentration” as appropriate). Determine whether. And the control apparatus 16 switches the operation mode of the air conditioning apparatus 1 to forced ventilation mode, when it is judged that the detected refrigerant
  • the forced air blowing mode is an operation mode in which outdoor air is forcibly taken in and exhausted indoors by rotating the air blowing fan 14. The details of the processing in the forced air blowing mode will be described later.
  • the control device 16 is configured by, for example, a microcomputer, software executed on an arithmetic device such as a CPU (Central Processing Unit), hardware such as a circuit device that realizes various processes, and the like.
  • a microcomputer software executed on an arithmetic device such as a CPU (Central Processing Unit), hardware such as a circuit device that realizes various processes, and the like.
  • a CPU Central Processing Unit
  • hardware such as a circuit device that realizes various processes, and the like.
  • FIG. 2 is a schematic diagram for explaining a case where the refrigerant leaks in the air-conditioning apparatus 1 according to the first embodiment.
  • the refrigerant leaks the leaked refrigerant is mixed into the sucked air and flows into the room through the duct 6 from the outlet 12.
  • the refrigerant that has flowed into the room in this way stays in the room, the refrigerant concentration in the room air rises, causing a danger of explosion, fire, or the like.
  • the refrigerant concentration in the indoor air is detected, and the blower fan 14 is forcibly rotated based on the detection result to perform a process of reducing the refrigerant concentration in the indoor air.
  • the control device 16 determines that the indoor refrigerant concentration is equal to or higher than a preset concentration based on the detection signals received from the refrigerant detection sensors 15A to 15C, the control device 16 causes the air conditioner 1 to control the outdoor air. It controls to operate in the forced air blowing mode forcibly taking in.
  • the control device 16 controls the rotational speed of the blower fan 14 to forcibly rotate the blower fan 14.
  • the outdoor air is forcibly taken into the indoor unit 2 and flows into the room through the outlet 12 and the duct 6.
  • the air that has flowed into the room is mixed with the room air that remains in a state in which the refrigerant is mixed.
  • concentration in indoor air falls.
  • concentration in indoor air will be less than the density
  • the outdoor air is forcibly taken in and flows into the room, so that the atmospheric pressure in the room is higher than the outdoor pressure. Therefore, in this Embodiment 1, the indoor air in which the refrigerant
  • FIG. 3 is a flowchart showing an example of the flow of the refrigerant concentration lowering process in the air-conditioning apparatus 1 according to Embodiment 1.
  • the control device 16 receives detection signals from the refrigerant detection sensors 15A to 15C. And the control apparatus 16 judges whether the refrigerant
  • step S1 the process proceeds to step S2.
  • step S1; No the process returns to step S1, and the process of step S1 is repeated until the refrigerant concentration becomes equal to or higher than the set concentration.
  • step S2 the control device 16 determines whether or not the air conditioner 1 is operating in the cooling operation mode or the heating operation mode. When it is determined that the cooling operation or the heating operation is being performed (step S2; Yes), the control device 16 controls each part of the air conditioner 1 so as to stop the current operation (step S3). On the other hand, when it is determined that the cooling operation or the heating operation is not being performed (step S2; No), the process proceeds to step S4.
  • step S4 the control device 16 switches the operation mode to the operation in the forced air blowing mode. And the control apparatus 16 controls the rotation speed of the ventilation fan 14, and rotates the ventilation fan 14 compulsorily (step S5).
  • step S6 the control device 16 determines whether or not the refrigerant concentration in the room has decreased and is lower than the set concentration based on detection signals from the refrigerant detection sensors 15A to 15C.
  • step S6 determines that the refrigerant concentration in the indoor air has decreased and is less than the set concentration
  • step S7 the operation in the forced air blowing mode is terminated.
  • step S6 determines that the refrigerant concentration in the indoor air is equal to or higher than the preset concentration and the refrigerant concentration has not decreased.
  • the indoor unit 2 of the air-conditioning apparatus 1 is connected to the outdoor unit 3 through the refrigerant pipe 4, and the refrigerant flowing through the outdoor unit 3 and the refrigerant pipe 4 flows.
  • It has the ventilation fan 14 which takes in outdoor air, the refrigerant
  • the control apparatus 16 is the refrigerant
  • the refrigerant concentration in the indoor air can be reduced by rotating the blower fan 14 and taking in outdoor air. Risk can be suppressed. Further, by taking outdoor air in this way, the atmospheric pressure in the room becomes higher than the outdoor atmospheric pressure, so the indoor air is exhausted from the gap 5a of the window, door, etc. There is no need to provide a separate mouth.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

L'invention concerne une unité intérieure et un appareil de climatisation reliés à une unité extérieure au moyen d'une tuyauterie, comportant un fluide frigorigène coulant à travers l'unité intérieure et l'appareil de climatisation et à travers l'unité extérieure et la tuyauterie, et comprenant : un ventilateur soufflant destiné à prendre de l'air extérieur ; un capteur de détection de fluide frigorigène destiné à détecter la concentration de fluide frigorigène dans un espace à climatiser ; et un dispositif de commande destiné à commander la vitesse de rotation du ventilateur soufflant. Le dispositif de commande fait tourner le ventilateur soufflant lorsqu'il a été établi que la concentration de fluide frigorigène est égale ou supérieure à une concentration prédéfinie, sur la base du résultat de détection du capteur de détection de fluide frigorigène.
PCT/JP2016/062918 2016-04-25 2016-04-25 Unité intérieure et appareil de climatisation WO2017187483A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2018513957A JPWO2017187483A1 (ja) 2016-04-25 2016-04-25 室内機および空気調和装置
PCT/JP2016/062918 WO2017187483A1 (fr) 2016-04-25 2016-04-25 Unité intérieure et appareil de climatisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/062918 WO2017187483A1 (fr) 2016-04-25 2016-04-25 Unité intérieure et appareil de climatisation

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109458693A (zh) * 2018-11-01 2019-03-12 奥克斯空调股份有限公司 一种空调器外风机控制方法、装置及空调器
JP2020085419A (ja) * 2018-11-30 2020-06-04 三菱電機株式会社 ショーケース
CN114562801A (zh) * 2022-01-20 2022-05-31 青岛海尔空调器有限总公司 空调内机的控制方法、控制设备及程序产品
CN115053104A (zh) * 2020-02-05 2022-09-13 大金工业株式会社 空调系统
CN115978709A (zh) * 2022-12-15 2023-04-18 珠海格力电器股份有限公司 空调冷媒泄漏的确定方法、确定装置和空调

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113483457B (zh) * 2021-07-07 2022-07-19 珠海拓芯科技有限公司 一种空调运行控制方法、空调器和可读存储介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04281142A (ja) * 1991-02-14 1992-10-06 Mitsubishi Electric Corp 空気調和装置
JP2005178428A (ja) * 2003-12-16 2005-07-07 Calsonic Kansei Corp 車両用空調装置
JP2011106697A (ja) * 2009-11-13 2011-06-02 Mitsubishi Electric Corp 空調室内機
WO2011099063A1 (fr) * 2010-02-10 2011-08-18 三菱電機株式会社 Dispositif de climatisation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3291407B2 (ja) * 1995-01-31 2002-06-10 三洋電機株式会社 冷房装置
JP5208100B2 (ja) * 2009-12-18 2013-06-12 三菱電機株式会社 空気調和機
JP5812081B2 (ja) * 2013-11-12 2015-11-11 ダイキン工業株式会社 室内機
JP6405126B2 (ja) * 2014-06-13 2018-10-17 東芝キヤリア株式会社 冷凍サイクル装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04281142A (ja) * 1991-02-14 1992-10-06 Mitsubishi Electric Corp 空気調和装置
JP2005178428A (ja) * 2003-12-16 2005-07-07 Calsonic Kansei Corp 車両用空調装置
JP2011106697A (ja) * 2009-11-13 2011-06-02 Mitsubishi Electric Corp 空調室内機
WO2011099063A1 (fr) * 2010-02-10 2011-08-18 三菱電機株式会社 Dispositif de climatisation

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109458693A (zh) * 2018-11-01 2019-03-12 奥克斯空调股份有限公司 一种空调器外风机控制方法、装置及空调器
CN109458693B (zh) * 2018-11-01 2021-01-29 奥克斯空调股份有限公司 一种空调器外风机控制方法、装置及空调器
JP2020085419A (ja) * 2018-11-30 2020-06-04 三菱電機株式会社 ショーケース
JP7192448B2 (ja) 2018-11-30 2022-12-20 三菱電機株式会社 ショーケース
CN115053104A (zh) * 2020-02-05 2022-09-13 大金工业株式会社 空调系统
CN114562801A (zh) * 2022-01-20 2022-05-31 青岛海尔空调器有限总公司 空调内机的控制方法、控制设备及程序产品
CN115978709A (zh) * 2022-12-15 2023-04-18 珠海格力电器股份有限公司 空调冷媒泄漏的确定方法、确定装置和空调

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