JP7149494B2 - refrigeration cycle equipment - Google Patents

refrigeration cycle equipment Download PDF

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Publication number
JP7149494B2
JP7149494B2 JP2018050336A JP2018050336A JP7149494B2 JP 7149494 B2 JP7149494 B2 JP 7149494B2 JP 2018050336 A JP2018050336 A JP 2018050336A JP 2018050336 A JP2018050336 A JP 2018050336A JP 7149494 B2 JP7149494 B2 JP 7149494B2
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compressor
outdoor unit
soot
refrigeration cycle
heat exchanger
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JP2019163864A (en
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晃 鶸田
桂司 佐藤
健 苅野
宏治 室園
健二 高市
敬 森本
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Panasonic Intellectual Property Management Co Ltd
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Panasonic Intellectual Property Management Co Ltd
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Priority to JP2018050336A priority Critical patent/JP7149494B2/en
Priority to PCT/JP2019/010443 priority patent/WO2019181710A1/en
Priority to EP19772596.3A priority patent/EP3770517A4/en
Priority to CN201980019922.8A priority patent/CN111868447A/en
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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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/46—Component arrangements in separate outdoor units
    • F24F1/48—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/08—Compressors specially adapted for separate outdoor units
    • F24F1/10—Arrangement or mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/46—Component arrangements in separate outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/56—Casing or covers of separate outdoor units, e.g. fan guards
    • 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
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F25B31/00—Compressor arrangements
    • F25B31/006—Cooling of compressor or motor
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
    • 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
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/031—Sensor arrangements
    • F25B2313/0314—Temperature sensors near the indoor heat exchanger
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/12—Inflammable refrigerants

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Other Air-Conditioning Systems (AREA)

Description

本発明は、ＨＦＯ１１２３を含む作動媒体を用いる冷凍サイクル装置に関する。 The present invention relates to a refrigeration cycle apparatus using a working medium containing HFO1123.

一般に、空気調和機等の冷凍サイクル装置は、圧縮機、必要に応じて四方弁、放熱器（または凝縮器）、キャピラリーチューブや膨張弁等の減圧器、蒸発器、等を配管接続して冷凍サイクルを構成し、その内部に作動媒体（冷媒）を循環させることにより、冷却または暖房作用を行っている。 In general, a refrigeration cycle device such as an air conditioner consists of a compressor, a four-way valve, a radiator (or a condenser), a pressure reducer such as a capillary tube or an expansion valve, and an evaporator, etc. A cooling or heating action is performed by forming a cycle and circulating a working medium (refrigerant) therein.

これらの冷凍サイクル装置における作動媒体としては、フロン類（フロン類はＲ○○またはＲ○○○と記すことが、米国ＡＳＨＲＡＥ３４規格により規定されている。以下、Ｒ○○またはＲ○○○と示す）と呼ばれるメタンまたはエタンから誘導されたハロゲン化炭化水素が知られている。 As a working medium in these refrigeration cycle apparatuses, fluorocarbons (fluorocarbons are specified as R○○ or R○○○ by the US ASHRAE 34 standard. Hereinafter, R○○ or R○○○ Halogenated hydrocarbons derived from methane or ethane called methane or ethane are known.

上記のような冷凍サイクル装置用作動媒体としては、Ｒ４１０Ａが多く用いられているが、Ｒ４１０Ａ冷媒の地球温暖化係数（ＧＷＰ）は２０９０と大きく、地球温暖化防止の観点から問題がある。 R410A is often used as a working medium for refrigeration cycle apparatuses as described above, but the global warming potential (GWP) of R410A refrigerant is as large as 2090, which is problematic from the viewpoint of global warming prevention.

そこで、地球温暖化防止の観点からは、ＧＷＰの小さな作動媒体として、例えば、ＨＦＯ１１２３（１，１，２－トリフルオロエチレン）や、ＨＦＯ１１３２（１，２－ジフルオロエチレン）が提案されている（例えば、特許文献１または特許文献２参照）。 Therefore, from the viewpoint of global warming prevention, working fluids with small GWP, such as HFO1123 (1,1,2-trifluoroethylene) and HFO1132 (1,2-difluoroethylene), have been proposed (for example, , see Patent Document 1 or Patent Document 2).

国際公開第２０１２／１５７７６４号WO2012/157764 国際公開第２０１２／１５７７６５号WO2012/157765

しかしながら、ＨＦＯ１１２３（１，１，２－トリフルオロエチレン）や、ＨＦＯ１１３２（１，２－ジフルオロエチレン）は、Ｒ４１０Ａなどの従来の作動媒体に比べて安定性が低く、ラジカルを生成した場合、不均化反応により別の化合物に変化する恐れがある。不均化反応は大きな熱放出を伴って圧力上昇するため、圧縮機や冷凍サイクル装置の信頼性を低下させる恐れがある。このため、ＨＦＯ１１２３やＨＦＯ１１３２を圧縮機や冷凍サイクル装置に用いる場合には、この不均化反応を抑制する必要がある。 However, HFO1123 (1,1,2-trifluoroethylene) and HFO1132 (1,2-difluoroethylene) are less stable than conventional working fluids such as R410A, and if they generate radicals, they There is a possibility that it may change into another compound due to a chemical reaction. Since the disproportionation reaction causes a pressure rise accompanied by a large amount of heat release, there is a possibility that the reliability of the compressor and the refrigeration cycle device may be lowered. Therefore, when HFO1123 and HFO1132 are used in compressors and refrigeration cycle devices, it is necessary to suppress this disproportionation reaction.

このような不均化反応は、過度に高温高圧となった雰囲気下にて、高エネルギが付加されると、これが起点となって発生する。 Such a disproportionation reaction is initiated when high energy is applied in an atmosphere of excessively high temperature and high pressure.

例えば、一例を挙げると、正常な運転条件下ではない状態、すなわち、凝縮器側の送風ファン停止、冷凍サイクル回路の閉塞等によって、吐出圧力（冷凍サイクルの高圧側）が過度に上昇する。 For example, the discharge pressure (high pressure side of the refrigerating cycle) rises excessively due to abnormal operating conditions, such as stopping of the blower fan on the condenser side, blockage of the refrigerating cycle circuit, and the like.

このような状態下で圧縮機のロック異常が生じ、このロック異常下においても、圧縮機への電力供給を続けられると、圧縮機の電動機へ電力が過剰に供給され、電動機が異常に発熱する。その結果、電動機の固定子を構成する固定子巻線の絶縁が溶融破壊されて導線同士でレイヤーショートと呼ばれる現象を引き起こし、これが高エネルギ源となって不均
化反応を誘起することになる。 Under such a condition, the compressor locks abnormally, and if the power supply to the compressor continues even under the lock abnormality, excessive power is supplied to the motor of the compressor, causing the motor to generate abnormal heat. . As a result, the insulation of the stator windings constituting the stator of the motor is melted and broken, causing a phenomenon called layer shorting between conductors, which becomes a source of high energy and induces a disproportionation reaction.

そして、不均化反応が発生すると圧縮機が破損し、作動媒体が煤となって圧縮機を収納している室外機の室外機本体と天板や前板の間の隙間から大気中に吹き出し、使用者が不安を感じる等信頼性が大きく低下する。 When the disproportionation reaction occurs, the compressor is damaged, and the working medium turns into soot and is blown out into the atmosphere from the gap between the outdoor unit main body and the top plate or front plate of the outdoor unit that houses the compressor. Reliability will drop significantly, such as people feeling uneasy.

本発明はこのような点に鑑みてなしたもので、ＨＦＯ１１２３を含む作動媒体を用いた空気調和機の不均化反応発生時の信頼性を向上させることを目的としたものである。 SUMMARY OF THE INVENTION The present invention has been made in view of these points, and an object of the present invention is to improve the reliability of an air conditioner using a working medium containing HFO1123 when a disproportionation reaction occurs.

本発明は、上記目的を達成するため、圧縮機、室外熱交換器、膨張手段、室内熱交換器を有する冷凍サイクル回路に、１，１，２－トリフルオロエチレンを含む作動媒体を封入して構成した空気調和機であって、前記圧縮機を収納した空気調和機の室外機に圧縮機収納空間と圧縮機収納空間外とを連通する連通部を設けた構成としてある。 In order to achieve the above objects, the present invention encloses a working medium containing 1,1,2-trifluoroethylene in a refrigeration cycle circuit having a compressor, an outdoor heat exchanger, an expansion means, and an indoor heat exchanger. In this air conditioner, an outdoor unit of the air conditioner housing the compressor is provided with a communicating portion for communicating between the compressor housing space and the outside of the compressor housing space.

これにより、圧縮機内で不均化反応が生じ圧縮機が破損して作動媒体が煤となって圧縮機収納空間内に吐出拡散した際、この煤は室外機に設けた連通部から室外機の外へと排出される。したがって、室外機の室外機本体と天板や前板との間の隙間から煤が勢いよく吹き出すことによって使用者が受ける不安感を解消することが出る。また、煤の排出箇所を連通部に特定できるので、煤排出の可能性があることを告知しておくなどすれば使用者が受ける不安感を和らげ、かつ、煤の排出により使用者に危害を与えるようなことを防止することができる。 As a result, when a disproportionation reaction occurs in the compressor and the compressor is damaged and the working medium turns into soot and is discharged and diffused into the compressor housing space, this soot is released from the communication part provided in the outdoor unit to the outdoor unit. discharged to the outside. Therefore, it is possible to eliminate the user's uneasiness caused by soot blowing out from the gap between the outdoor unit main body and the top plate or front plate of the outdoor unit. In addition, since the point where soot is discharged can be specified in the communication part, if the user is notified of the possibility of soot discharge, the user's anxiety will be alleviated and the user will be harmed by the discharge of soot. You can prevent giving.

本発明は、上記構成により、不均化反応発生時の煤の吹き出しにより使用者が受ける不安感を和らげ、かつ、使用者に危害を与えるようなことを防止でき、ＨＦＯ１１２３を含む作動媒体を用いた空気調和機の信頼性を向上させることができる。 According to the above configuration, the present invention can alleviate the user's anxiety caused by the soot blowing out when the disproportionation reaction occurs, and can prevent the user from being harmed. It is possible to improve the reliability of the air conditioner.

本発明の実施の形態１に係る冷凍サイクル装置としての空気調和機の概略構成図Schematic configuration diagram of an air conditioner as a refrigeration cycle device according to Embodiment 1 of the present invention 同実施の形態１に係る空気調和機の圧縮機を示す断面図Sectional view showing the compressor of the air conditioner according to the first embodiment 同実施の形態１に係る空気調和機の室外機を示す正面図The front view showing the outdoor unit of the air conditioner according to the first embodiment. 同実施の形態１に係る空気調和機の室外機を示す分解斜視図1 is an exploded perspective view showing an outdoor unit of an air conditioner according to Embodiment 1. FIG. 同実施の形態１に係る空気調和機の室外機を示す平面図A plan view showing the outdoor unit of the air conditioner according to the first embodiment. 同実施の形態２に係る空気調和機の室外機部分での動作を説明する概略断面図Schematic cross-sectional view for explaining the operation of the outdoor unit of the air conditioner according to the second embodiment. 同実施の形態２に係る空気調和機の室外機部分での動作を説明する概略平面図Schematic plan view for explaining the operation of the outdoor unit of the air conditioner according to the second embodiment. 同実施の形態２に係る空気調和機の圧縮機に設けた圧力逃がし機構の説明図Explanatory drawing of the pressure relief mechanism provided in the compressor of the air conditioner according to the second embodiment.

第１の発明は、圧縮機、室外熱交換器、膨張手段、室内熱交換器を有する冷凍サイクル回路に、１，１，２－トリフルオロエチレンを含む作動媒体を封入して構成した空気調和機であって、前記圧縮機を収納した空気調和機の室外機に圧縮機収納空間と圧縮機収納空間外とを連通する連通部を設けた構成としてある。 A first invention is an air conditioner constructed by sealing a working medium containing 1,1,2-trifluoroethylene in a refrigeration cycle circuit having a compressor, an outdoor heat exchanger, an expansion means, and an indoor heat exchanger. Further, the outdoor unit of the air conditioner housing the compressor is provided with a communicating portion for communicating between the compressor housing space and the outside of the compressor housing space.

これにより、圧縮機内で不均化反応が生じ圧縮機が破損して作動媒体が煤となって圧縮機収納空間内に吐出拡散した際、この煤は室外機に設けた連通部から室外機の外へと排出される。したがって、室外機の室外機本体と天板や前板との間の隙間から煤が勢いよく吹
き出すことによって使用者が受ける不安感を解消することが出る。また、煤の排出箇所を連通部に特定できるので、煤排出の可能性があることを告知しておくなどすれば使用者が受ける不安感を和らげ、かつ、煤の排出により使用者に危害を与えるようなことを防止することができる。 As a result, when a disproportionation reaction occurs in the compressor and the compressor is damaged and the working medium turns into soot and is discharged and diffused into the compressor housing space, this soot is released from the communication part provided in the outdoor unit to the outdoor unit. discharged to the outside. Therefore, it is possible to eliminate the user's uneasiness caused by soot blowing out from the gap between the outdoor unit main body and the top plate or front plate of the outdoor unit. In addition, since the point where soot is discharged can be specified in the communication part, if the user is notified of the possibility of soot discharge, the user's anxiety will be alleviated and the user will be harmed by the discharge of soot. You can prevent giving.

第２の発明は、第１の発明において、前記室外機は室外機本体内に圧縮機、室外熱交換器を備え、前記圧縮機と室外熱交換器との間を仕切板で区切って圧縮機収納空間を形成し、この圧縮機収納空間に前記圧縮機を設けた構成としてある。 A second invention is based on the first invention, wherein the outdoor unit includes a compressor and an outdoor heat exchanger in the outdoor unit body, and the compressor and the outdoor heat exchanger are separated by a partition plate. A housing space is formed, and the compressor is provided in this compressor housing space.

これにより、圧縮機から吐出した煤が熱交換器を収納している部分に吹き出して熱交換器を煤で汚染してしまうことを防止でき、熱交換器の再使用を可能とすることができる。 As a result, it is possible to prevent the soot discharged from the compressor from blowing out to the part housing the heat exchanger and contaminating the heat exchanger with soot, and the heat exchanger can be reused. .

第３発明は、第１または第２の発明において、前記連通部は圧縮機収納空間を構成する部材同士が向き合って形成する隙間の総和面積よりも大きな面積とした構成としてある。 According to a third aspect of the present invention, in the first or second aspect, the communicating portion has an area larger than the total area of gaps formed by opposing members forming the compressor housing space.

これにより、圧縮機から圧縮機収納空間に吐出した煤は連通部から室外機外に吹き出すことになるので、圧縮機収納空間を構成する部材同士が向き合って形成する隙間、すなわち室外機の室外機本体と天板や前板との間の隙間から煤が勢いよく吹き出すことを防止でき、使用者が受ける不安感を解消することが出る。 As a result, the soot discharged from the compressor into the compressor storage space is blown out of the outdoor unit from the communicating portion, so the gap formed by the members constituting the compressor storage space facing each other, that is, the outdoor unit of the outdoor unit It is possible to prevent the soot from blowing out vigorously from the gap between the main body and the top plate or the front plate, thereby alleviating the user's anxiety.

第４の発明は、第１または第２の発明において、前記連通部は圧縮機の最下部より上方に設けた構成としてある。 According to a fourth invention, in the first or second invention, the communication portion is provided above the lowermost portion of the compressor.

これにより、室外機の底面に溜まるドレン水等によって連通部が塞がれるような問題を未然に防止でき、連通部からの煤の排出を確実なものとすることができる。 As a result, it is possible to prevent the communication portion from being clogged with drain water or the like that accumulates on the bottom surface of the outdoor unit, and it is possible to ensure the discharge of soot from the communication portion.

第５の発明は、第１～第４の発明において、前記連通部は室外機本体の背面に設けた構成としてある。 According to a fifth invention, in the first to fourth inventions, the communicating portion is provided on the rear surface of the outdoor unit main body.

これにより、煤の排出を室外機後方の家屋の壁面側に特定することができ、室外機の周辺、すなわち前方及び側方にいる使用者に煤が吹きかかるような恐れを確実に防止することができる。 As a result, the discharge of soot can be specified on the side of the wall surface of the house behind the outdoor unit, and the possibility of spraying soot on the surroundings of the outdoor unit, that is, on the front and sides of the user can be reliably prevented. can be done.

第６の発明は、第１～第５の発明において、前記圧縮機は不均化反応が生じる過度な圧力を外部に逃がす圧力逃がし部を設けた構成としてある。 According to a sixth aspect of the invention, in the first to fifth aspects of the invention, the compressor is provided with a pressure relief portion for releasing an excessive pressure causing a disproportionation reaction to the outside.

これにより、圧縮機自体の極端な破損を防止でき、安全性を高めることができるとともに、不均化反応の急激な進行を抑制して煤の発生量、すなわち、連通部からから室外機外に排出される煤の排出量を抑制でき、使用者の不安感を更に低減することができる。 As a result, extreme damage to the compressor itself can be prevented, safety can be improved, and the rapid progress of the disproportionation reaction can be suppressed to suppress the amount of soot generated, that is, from the communication part to the outside of the outdoor unit. The amount of discharged soot can be suppressed, and the anxiety of the user can be further reduced.

第７の発明は、第１～第６の発明において、前記作動媒体に不均化抑制剤を添加した構成としてある。 According to a seventh invention, in any one of the first to sixth inventions, a disproportionation inhibitor is added to the working medium.

これにより、不均化反応を抑制して圧縮機自体の破損を未然に防止し安全性を一段と高めることができるとともに、不均化反応の急激な進行を防止できるので、煤の発生量、すなわち、連通部からから室外機外に排出される煤の排出量を少なくでき、使用者の不安感を更に低減することができる。 As a result, the disproportionation reaction can be suppressed to prevent damage to the compressor itself, and safety can be further improved. , the amount of soot discharged from the communicating portion to the outside of the outdoor unit can be reduced, and the anxiety of the user can be further reduced.

以下、本発明の実施の形態について図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the present invention is not limited by this embodiment.

（実施の形態１）
図１は本発明の実施の形態１に係る冷凍サイクル装置の概略構成図、図２は同冷凍サイクル装置に用いた圧縮機の断面図である。 (Embodiment 1)
FIG. 1 is a schematic configuration diagram of a refrigeration cycle apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a sectional view of a compressor used in the same refrigeration cycle apparatus.

本実施の形態の冷凍サイクル装置１０は、空気調和機として使用され、図１に示すように、室内機１１および室外機１２、並びにこれらを接続する配管１３を備えており、室内機１１は蒸発器或いは凝縮器として使用される室内熱交換器１４を備え、室外機１２は凝縮器或いは蒸発器として使用される室外熱交換器１５、圧縮機１６、膨張手段１７、及び制御器１８を備えている。 A refrigeration cycle apparatus 10 of the present embodiment is used as an air conditioner, and as shown in FIG. The outdoor unit 12 comprises an indoor heat exchanger 14 used as a condenser or condenser, and the outdoor unit 12 comprises an outdoor heat exchanger 15 used as a condenser or evaporator, a compressor 16, an expansion means 17, and a controller 18. there is

室内機１１の室内熱交換器１４と室外機１２の室外熱交換器１５とは、配管１３で環状に接続され、これにより冷凍サイクルが形成されている。具体的には、室内機１１の室内熱交換器１４、圧縮機１６、室外機１２の室外熱交換器１５、膨張手段１７の順で配管１３により環状に接続されている。また、室内熱交換器１４、圧縮機１６、および室外熱交換器１５を接続する配管１３には、冷暖房切換用の四方弁１９が設けられている。なお、室内機１１は、図示しない送風ファン、温度センサ、操作部等を備えており、室外機１２は、図示しない送風機、アキュームレータ等を備えている。さらに、配管１３には、図示しない各種弁装置（四方弁１９も含む）、ストレーナ等が設けられている。 The indoor heat exchanger 14 of the indoor unit 11 and the outdoor heat exchanger 15 of the outdoor unit 12 are annularly connected by a pipe 13, thereby forming a refrigeration cycle. Specifically, the indoor heat exchanger 14 of the indoor unit 11, the compressor 16, the outdoor heat exchanger 15 of the outdoor unit 12, and the expansion means 17 are annularly connected by the pipe 13 in this order. A four-way valve 19 for switching between cooling and heating is provided in the pipe 13 connecting the indoor heat exchanger 14, the compressor 16, and the outdoor heat exchanger 15. As shown in FIG. The indoor unit 11 includes a blower fan, a temperature sensor, an operation unit, etc. (not shown), and the outdoor unit 12 includes a blower, an accumulator, etc. (not shown). Further, the pipe 13 is provided with various valve devices (including the four-way valve 19), a strainer, and the like (not shown).

室内機１１が備える室内熱交換器１４は、送風ファンにより室内機１１の内部に吸い込まれた室内空気と、室内熱交換器１４の内部を流れる作動媒体との間で熱交換を行う。室内機１１は、暖房時には熱交換により暖められた空気を室内に送風し、冷房時には熱交換により冷却された空気を室内に送風する。室外機１２が備える室外熱交換器１５は、送風機により室外機１２の内部に吸い込まれた外気と室外熱交換器１５の内部を流れる作動媒体との間で熱交換を行う。 The indoor heat exchanger 14 included in the indoor unit 11 exchanges heat between the indoor air sucked into the indoor unit 11 by the blower fan and the working medium flowing inside the indoor heat exchanger 14 . The indoor unit 11 blows air warmed by heat exchange into the room during heating, and blows air cooled by heat exchange into the room during cooling. The outdoor heat exchanger 15 included in the outdoor unit 12 exchanges heat between the outside air sucked into the outdoor unit 12 by the blower and the working medium flowing inside the outdoor heat exchanger 15 .

図２は上記冷凍サイクル回路に用いられる圧縮機１６を示し、この圧縮機１６は、本実施の形態では密閉型のロータリ式圧縮機によって構成されており、密閉容器１６１の内部に、電動機部１６２と圧縮機構部１６３が収納され、内部は高温高圧の作動媒体と潤滑油で満たされ、底部は潤滑油を溜める貯油部１６４となっている。 FIG. 2 shows the compressor 16 used in the refrigerating cycle circuit. In this embodiment, the compressor 16 is a closed rotary compressor. and a compression mechanism portion 163 are accommodated therein, and the inside is filled with a high-temperature and high-pressure working medium and lubricating oil, and the bottom portion is an oil storage portion 164 for storing the lubricating oil.

電動機部（モータ）１６２は、所謂ブラシレス・モータであり、圧縮機構部１６３のクランクシャフト１６５に接続された回転子１６６と、回転子１６６の周囲に設けられた固定子１６７とを備えている。 The electric motor section (motor) 162 is a so-called brushless motor, and includes a rotor 166 connected to a crankshaft 165 of the compression mechanism section 163 and a stator 167 provided around the rotor 166 .

回転子１６６は、回転子鉄心に永久磁石を装着一体化して構成されている。また、固定子１６７は、固定子鉄心に絶縁紙１６９を介して固定子巻線１７０を集中巻して構成されている。固定子巻線１７０からはリード線１７１が吐き出してあり、リード線１７１の他端は給電ターミナル１７２に接続されている。給電ターミナル１７２は、３つの端子を備え、それぞれの端子は、インバータ式の制御器１８（図１参照）に接続されている。
なお、固定子巻線１７０を分布巻きにして構成してもよい。 The rotor 166 is configured by integrally mounting a permanent magnet on a rotor core. In addition, the stator 167 is configured by concentratedly winding the stator windings 170 around the stator core with insulating paper 169 interposed therebetween. A lead wire 171 is discharged from the stator winding 170 and the other end of the lead wire 171 is connected to a feed terminal 172 . The power supply terminal 172 has three terminals, each of which is connected to the inverter type controller 18 (see FIG. 1).
Note that the stator winding 170 may be configured with distributed winding.

制御器１８は、外部電源２０（図１参照）から電源供給を受けてスイッチング素子により、回転子１６６に回転磁界が発生するよう固定子巻線１７０に電流を流している。回転磁界は、インバータにより可変され、圧縮機１６の運転開始直後等には高速で、安定運転時等には低速で運転可能となっている。 The controller 18 is supplied with power from the external power supply 20 (see FIG. 1) and causes current to flow through the stator windings 170 by means of switching elements so that a rotating magnetic field is generated in the rotor 166 . The rotating magnetic field is varied by an inverter, and can be operated at high speed immediately after the compressor 16 starts operating, and at low speed during stable operation.

圧縮機構部１６３は、圧縮室１７３を形成するシリンダ１７４と、シリンダ１７４内の圧縮室１７３に配置したローリングピストン１７５を有している。ローリングピストン１
７５は、前記クランクシャフト１６５の回転によりベーン（図示せず）に当接しながら圧縮室内で回転運動し、吸入管１７９から作動媒体を吸引して圧縮する。 The compression mechanism portion 163 has a cylinder 174 forming a compression chamber 173 and a rolling piston 175 arranged in the compression chamber 173 inside the cylinder 174 . rolling piston 1
As the crankshaft 165 rotates, the working medium 75 rotates in the compression chamber while coming into contact with vanes (not shown), sucks the working medium from the suction pipe 179 and compresses it.

圧縮した作動媒体は、吐出マフラー１７６から密閉容器１６１内の吐出作動媒体空間１７７に吐出され、吐出管１７８から圧縮機構部１６３の外へと吐出される。また、上記圧縮室１７３での液圧縮を防止するため、吸入管１７９にはアキュームレータ１８０が設けられている。 The compressed working medium is discharged from the discharge muffler 176 into the discharged working medium space 177 in the closed container 161 and discharged out of the compression mechanism section 163 through the discharge pipe 178 . Further, an accumulator 180 is provided in the suction pipe 179 in order to prevent liquid compression in the compression chamber 173 .

図３は上記構成の空気調和機における室内機１１の具体例を示す正面図、図４は同室内機１１の分解斜視図、図５は同室外機の平面図で、前記圧縮機１６は室外機本体１２１内に仕切板１２２によって仕切られた圧縮機収納空間１２３内に設置してある。圧縮機収納空間１２３の上部には制御器１８を収容した制御収納室１２４が設けてあり、その上方は室外機本体１２１の上部に覆着した天板１２５によって覆われている。また、圧縮機収納空間１２３の隣は室外熱交換器１５と送風機２１が設置してあり、その前面は圧縮機収納空間１２３の前面とともに室外機本体１２１の前面に装着した前板１２６によって覆ってある。また、前記圧縮機収納空間１２３を形成する室外機本体１２１の側面には側壁カバー１２７が着脱自在に装着してある。 3 is a front view showing a specific example of the indoor unit 11 in the air conditioner having the above configuration, FIG. 4 is an exploded perspective view of the indoor unit 11, and FIG. 5 is a plan view of the outdoor unit. It is installed in a compressor storage space 123 partitioned by a partition plate 122 inside the machine main body 121 . A control housing chamber 124 containing the controller 18 is provided above the compressor housing space 123 , and the upper side thereof is covered with a top plate 125 that covers the upper portion of the outdoor unit main body 121 . An outdoor heat exchanger 15 and a blower 21 are installed next to the compressor storage space 123, and the front surface thereof is covered by a front plate 126 attached to the front surface of the outdoor unit main body 121 together with the front surface of the compressor storage space 123. be. A side wall cover 127 is detachably attached to the side surface of the outdoor unit main body 121 forming the compressor housing space 123 .

以上のように構成された空気調和機は、その冷凍サイクル回路内に作動媒体（冷媒）が封入されている。本実施の形態の作動媒体は、冷媒成分として、少なくとも１，１，２－トリフルオロエチレン（ＨＦＯ１１２３）を含有している。１，１，２－トリフルオロエチレンは、次に示す式（１）の構造を有しており、エチレンの１位の炭素原子（Ｃ）に結合する２つの水素原子（Ｈ）がフッ素（Ｆ）に置換されているとともに、２位の炭素原子に結合する２つの水素原子のうち一方がフッ素に置換されている構造を有している。 In the air conditioner configured as described above, a working medium (refrigerant) is enclosed in the refrigeration cycle circuit. The working medium of the present embodiment contains at least 1,1,2-trifluoroethylene (HFO1123) as a refrigerant component. 1,1,2-trifluoroethylene has the structure of the following formula (1), two hydrogen atoms (H) bonded to the carbon atom (C) at the 1-position of ethylene are fluorine (F ) and one of the two hydrogen atoms bonded to the carbon atom at the 2-position is substituted with fluorine.

Figure 0007149494000001
１，１，２－トリフルオロエチレンは、炭素－炭素二重結合を含む。大気中のオゾンは、光化学反応によってヒドロキシルラジカル（ＯＨラジカル）を生成するが、このヒドロキシルラジカルにより二重結合が分解されやすい。そのため、１，１，２－トリフルオロエチレンは、オゾン層破壊および地球温度化への影響が少ないものとなっている。
Figure 0007149494000001
 1,1,2-trifluoroethylene contains a carbon-carbon double bond. Ozone in the atmosphere produces hydroxyl radicals (OH radicals) through a photochemical reaction, and these hydroxyl radicals easily break double bonds. Therefore, 1,1,2-trifluoroethylene has less impact on ozone depletion and global warming.

しかしながら、１，１，２－トリフルオロエチレンは、この良好な分解性により既述した如く高温高圧条件下でレイヤーショート等の高エネルギが付加されると急激な不均化反応を引き起こす。この不均化反応は、１，１，２－トリフルオロエチレンの分子が分解する自己分解反応が発生するとともに、この自己分解反応に続いて、分解により生じた炭素が重合して煤となる重合反応等が発生する。よって、凝縮器側の送風ファン停止、冷凍サイクル回路の閉塞等により高温高圧状態になって圧縮機１６がロック状態にもかかわらず固定子巻線１７０に通電が継続されて巻線が異常発熱したり、絶縁破壊されてレイヤーショートが生じるなどすると、活性ラジカルが発生し、この活性ラジカルと１，１，２－トリフルオロエチレンとが反応して前述した不均化反応が発生する。 However, 1,1,2-trifluoroethylene, due to its good decomposability, causes a rapid disproportionation reaction when high energy such as layer short is applied under high temperature and high pressure conditions as described above. In this disproportionation reaction, a self-decomposition reaction occurs in which the molecules of 1,1,2-trifluoroethylene decompose, and following this self-decomposition reaction, the carbon produced by the decomposition is polymerized to form soot. A reaction etc. occurs. Therefore, due to the stoppage of the blower fan on the condenser side, blockage of the refrigeration cycle circuit, etc., a high temperature and high pressure state occurs, and although the compressor 16 is locked, the stator winding 170 continues to be energized and abnormally heats up. If dielectric breakdown occurs and layer shorting occurs, active radicals are generated, and the active radicals react with 1,1,2-trifluoroethylene to cause the disproportionation reaction described above.

上記不均化反応は発熱を伴うことから、この発熱により活性ラジカルが発生し、さらに、この活性ラジカルにより不均化反応が誘発される。このように、活性ラジカルの発生と不均化反応の発生とが連鎖することで、不均化反応が急激に進行し、圧縮機１６内の圧力が０．２ｓｅｃ程度で急激に上昇して、ついには圧縮機１６の破損に至る。 Since the disproportionation reaction is accompanied by heat generation, the heat generation generates active radicals, which further induce the disproportionation reaction. In this way, the generation of active radicals and the generation of the disproportionation reaction are chained, so that the disproportionation reaction proceeds rapidly, and the pressure in the compressor 16 rises sharply in about 0.2 sec, Finally, the compressor 16 is damaged.

圧縮機１６が破損に至ると、圧縮機１６内で不均化反応を起こした作動媒体が煤となって圧縮機１６を収納している室外機１２内に吐出拡散し、既述した如く室外機１２の圧縮機収納空間１２３の隙間、例えば室外機本体１２１と天板１２５や前板１２６との間から吹き出すような形となる。その結果、使用者は大きな不安を感じることになる。また、室外機本体１２１、天板１２５、前板１２６の煤が吹き出した部分及びその近傍は煤が付着するため、圧縮機交換等のメンテナンス時に室外機本体１２１、天板１２５、前板１２６からなる筐体そのものまで交換しなければならなくなる。 When the compressor 16 is damaged, the working medium undergoing a disproportionation reaction within the compressor 16 becomes soot and is discharged and diffused into the outdoor unit 12 housing the compressor 16. The air is blown out from a gap in the compressor storage space 123 of the compressor 12, for example, between the outdoor unit main body 121 and the top plate 125 or the front plate 126. As a result, the user feels great anxiety. In addition, since soot adheres to the part of the outdoor unit main body 121, the top plate 125, and the front plate 126 where the soot has blown out and the vicinity thereof, the outdoor unit main body 121, the top plate 125, and the front plate 126 may Even the housing itself will have to be replaced.

そこで本実施の形態の空気調和機では、前記圧縮機収納空間１２３に室外機１２の外、すなわち大気と連通する連通部を設けてある。具体的には、図４に示すように、圧縮機収納空間１２３を構成する室外機本体１２１の側壁１２８及び側壁カバー１２７に連通部としての煤排出用の排気孔１２９が設けてある。 Therefore, in the air conditioner of the present embodiment, the compressor housing space 123 is provided with a communicating portion that communicates with the outside of the outdoor unit 12, that is, with the atmosphere. Specifically, as shown in FIG. 4, a side wall 128 and a side wall cover 127 of the outdoor unit main body 121 forming the compressor housing space 123 are provided with an exhaust hole 129 for discharging soot as a communicating portion.

これにより、圧縮機１６内で不均化反応が生じ圧縮機１６が破損して作動媒体の煤が圧縮機収納空間１２３内に吐出拡散した際、この煤は室外機本体１２１の側部、すなわち側壁１２８及び側壁カバー１２７に設けた排気孔１２９から室外機１２の外へと排出される。よって、室外機１２の室外機本体１２１と天板１２５や前板１２６との間の隙間から吹き出すようなことを防止できる。 As a result, when a disproportionation reaction occurs in the compressor 16 and the compressor 16 is damaged and the soot of the working medium is discharged and diffused into the compressor storage space 123, this soot is discharged from the side of the outdoor unit main body 121, that is, It is discharged to the outside of the outdoor unit 12 through exhaust holes 129 provided in the side wall 128 and the side wall cover 127 . Therefore, it is possible to prevent the air from blowing out from the gap between the outdoor unit main body 121 of the outdoor unit 12 and the top plate 125 or the front plate 126 .

したがって、室外機１２の室外機本体１２１と天板１２５や前板１２６との間の隙間から煤が勢いよく吹き出すことによって受ける不安感を解消することができる。 Therefore, it is possible to eliminate the anxiety caused by soot blowing out from the gap between the outdoor unit main body 121 of the outdoor unit 12 and the top plate 125 or the front plate 126 .

また、上記排気孔１２９の近辺に注意書き、例えば「異常時に煤が放出されることがあります」という趣旨の注意書きをしておくことによって、排気孔１２９から煤が排出されることがあっても使用者に与える不安感を和らげ、かつ、煤の排出により使用者に危害を与えるようなことを防止することができる。 In addition, by writing a note near the exhaust hole 129, for example, a note to the effect that "soot may be discharged in an abnormal situation", soot may be discharged from the exhaust hole 129. Also, it is possible to relieve the user's sense of anxiety and prevent the user from being harmed by soot discharge.

さらにまた、室外機本体１２１と天板１２５や前板１２６との間の隙間から吹き出す場合に生じる室外機本体１２１、天板１２５、前板１２６の隙間付近の煤汚れも防止することができ、圧縮機交換等のメンテナンス時に室外機本体１２１、天板１２５、前板１２６からなる筐体そのものを交換する必要がなくなって部品交換の費用負担を軽減することができる。 Furthermore, soot stains near the gaps between the outdoor unit main body 121, the top plate 125, and the front plate 126, which are generated when blowing out from the gaps between the outdoor unit main body 121 and the top plate 125, and the front plate 126, can be prevented. When performing maintenance such as replacing the compressor, it is not necessary to replace the housing itself consisting of the outdoor unit main body 121, the top plate 125 and the front plate 126, so that the cost burden for parts replacement can be reduced.

なお、上記排気孔１２９は、その孔面積を、圧縮機収納空間１２３を覆う天板１２５及
び前板１２６と室外機本体１２１との間に形成される隙間の総和面積よりも大きく形成しておくのが望ましい。つまり、圧縮機１６の周辺空間を区切る部材（室外機本体１２１と天板１２５、前板１２６等）同士が向き合って形成する隙間の面積の総和よりも、排気孔１２９の面積を大きく設定しておくのが好ましい。 The exhaust hole 129 has a hole area larger than the total area of the gap formed between the top plate 125 and the front plate 126 covering the compressor housing space 123 and the outdoor unit main body 121. is desirable. That is, the area of the exhaust hole 129 is set larger than the sum of the areas of the gaps formed by the members (the outdoor unit body 121, the top plate 125, the front plate 126, etc.) that separate the space around the compressor 16. It is preferable to leave

これによって、圧縮機収納空間１２３に拡散した煤は開口面積の大きな排気孔１２９から室外機１２の外へとスムーズに排出されるようになり、室外機本体１２１と天板１２５や前板１２６との間の隙間からの吹き出しを確実に防止して、不安感の解消効果を上げ、かつ筐体の煤汚れも確実に防止できる。 As a result, the soot that has diffused into the compressor housing space 123 is smoothly discharged to the outside of the outdoor unit 12 through the exhaust hole 129 having a large opening area, and the outdoor unit main body 121 and the top plate 125 and front plate 126 are connected. It is possible to surely prevent air blowing out from the gap between them, improve the effect of eliminating the feeling of uneasiness, and surely prevent the housing from being stained with soot.

また、上記排気孔１２９は本実施の形態では室外機１２の側部に設けたが、これは背面に設けてもよく、また、害虫等の侵入を防止するためネットを設けるか多数の小孔群としておくのが好ましい。 In addition, although the exhaust hole 129 is provided on the side of the outdoor unit 12 in this embodiment, it may be provided on the rear surface. Groups are preferred.

そして、上記排気孔１２９を室外機本体１２１の背面に設けておけば、煤の排出を室外機の後方に特定することができ、室外機１２の前面及び側面の周辺に使用者等がいてもこの使用者等に煤が吹きかかるような恐れを確実に防止することができる。つまり、排気孔１２９を使用者等がいることのできない室外機後方の家屋の壁面側に設けておくことにより、使用者に対する煤危害を確実に防止することができる。 Further, if the exhaust hole 129 is provided on the back surface of the outdoor unit body 121, the soot discharge can be specified at the rear of the outdoor unit, and even if there are users around the front and side surfaces of the outdoor unit 12, It is possible to reliably prevent the user from being sprayed with soot. In other words, by providing the exhaust hole 129 on the side of the wall of the house behind the outdoor unit where the user cannot enter, it is possible to reliably prevent the user from being harmed by the soot.

また、上記排気孔１２９は圧縮機１６の最下部よりも上方に設けておくのが好ましい。これにより、圧縮機１６の最下部よりも下方、例えば室外機１２の底面に設けた場合等に懸念される問題、すなわち室外機底面に溜まるドレン水等への水没による排気孔１２９の閉塞等を未然に防止でき、排気孔１２９からの煤の排出を確実なものとすることができる。 Moreover, it is preferable to provide the exhaust hole 129 above the lowermost portion of the compressor 16 . As a result, there is a problem that is concerned when it is provided below the lowest part of the compressor 16, for example, on the bottom surface of the outdoor unit 12, that is, blockage of the exhaust hole 129 due to submersion in drain water or the like that accumulates on the bottom surface of the outdoor unit. This can be prevented in advance, and the discharge of soot from the exhaust hole 129 can be ensured.

（実施の形態２）
図６は実施の形態２における空気調和機の室外機を示す概略構成図、図７は同室外機の概略平面図、図８は同圧縮機に設けた圧力逃がし機構の説明図である。 (Embodiment 2)
FIG. 6 is a schematic configuration diagram showing an outdoor unit of an air conditioner according to Embodiment 2, FIG. 7 is a schematic plan view of the outdoor unit, and FIG. 8 is an explanatory diagram of a pressure relief mechanism provided in the compressor.

図６～図８に示すように、本実施の形態においては、上記圧縮機１６に作動媒体の不均化反応で急上昇する圧力を逃がす圧力逃し機構１８１が設けてある。この圧力逃し機構１８１は、例えば図８に示すように給電ターミナル１７２の溶接部１８２の強度を弱くすることによって構成してある。 As shown in FIGS. 6 to 8, in the present embodiment, the compressor 16 is provided with a pressure relief mechanism 181 for releasing the pressure that suddenly rises due to the disproportionation reaction of the working medium. This pressure relief mechanism 181 is constructed by, for example, weakening the strength of the welded portion 182 of the power supply terminal 172 as shown in FIG.

これによって、圧縮機１６内で圧力が上昇して不均化反応が生じると、その圧力で圧力逃し機構１８１となる給電ターミナル１７２の溶接個所が外れ、給電ターミナル１７２の溶接外れ部分から圧力が放出されて、圧縮機１６内の作動媒体の圧力が瞬時に低下する。したがって、圧縮機１６の密閉容器自体の極端な破損を防止でき、安全性を高めることができる。また、不均化反応の急激な進行を抑制して煤の発生量、すなわち、排気孔１２９からから排出される煤の排出量を少なくすることができ、使用者の不安感を更に低減することができる。 As a result, when the pressure rises in the compressor 16 and a disproportionation reaction occurs, the pressure releases the welded portion of the power supply terminal 172, which serves as the pressure relief mechanism 181, and the pressure is released from the welded portion of the power supply terminal 172. As a result, the pressure of the working medium inside the compressor 16 drops instantaneously. Therefore, extreme damage to the sealed container itself of the compressor 16 can be prevented, and safety can be improved. In addition, the rapid progress of the disproportionation reaction can be suppressed to reduce the amount of soot generated, that is, the amount of soot discharged from the exhaust hole 129, thereby further reducing the anxiety of the user. can be done.

また、図６に示すように、圧力逃し機構１８１近傍から排気孔１２９に向けてガイド部材１８３を設けておくことによって、圧縮機１６の圧力逃し機構１８１から吐出する煤を排気孔１２９へと案内してスムーズに室外機１２の外へと排出させることもでき、室外機本体１２１、天板１２５、前板１２６の隙間から煤が空きだすのをより確実に防止することができる。 Further, as shown in FIG. 6, by providing a guide member 183 toward the exhaust hole 129 from the vicinity of the pressure relief mechanism 181, the soot discharged from the pressure relief mechanism 181 of the compressor 16 is guided to the exhaust hole 129. It is possible to smoothly discharge the soot to the outside of the outdoor unit 12, and prevent the soot from escaping from the gaps between the outdoor unit main body 121, the top plate 125 and the front plate 126 more reliably.

また、排気孔１２９の外側に煤排出ガイド１８４を設けておくことによって煤が使用者
に向かって吹き出すことを防止でき、煤による危害を確実に防止することができる。 Further, by providing the soot discharge guide 184 outside the exhaust hole 129, it is possible to prevent the soot from blowing out toward the user, and to reliably prevent harm caused by the soot.

なお、上記圧力逃し機構１８１は、上記構成に限られるものではなく、吐出管１７８の溶接部分の強度を弱くして構成したり、別途圧力調整弁を設ける等して構成してもよいものである。 The pressure relief mechanism 181 is not limited to the above configuration, and may be configured by weakening the strength of the welded portion of the discharge pipe 178, or by providing a separate pressure regulating valve. be.

（実施の形態３）
本実施の形態３は、冷凍サイクル回路内に封入した作動媒体、すなわち、１，１，２－トリフルオロエチレン（ＨＦＯ１１２３）を含有した作動媒体に、１，１，２－トリフルオロエチレン（ＨＦＯ１１２３）の不均化反応を抑制する不均化抑制剤を添加したものである。 (Embodiment 3)
In the third embodiment, 1,1,2-trifluoroethylene (HFO1123) is added to the working medium enclosed in the refrigeration cycle circuit, that is, the working medium containing 1,1,2-trifluoroethylene (HFO1123). A disproportionation inhibitor is added to suppress the disproportionation reaction of

例えば、上記不均化抑制剤は、次に示す式（２）
Ｃ2ＨmＸn ・・・ （２）
（ただし、式（２）におけるＸは、Ｆ，Ｃｌ，Ｂｒ，Ｉからなる群より選択されるハロゲン原子であり、ｍは０以上の整数であるとともにｎは１以上の整数であり、さらに、ｍおよびｎの和は６であり、ｎが２以上のときＸは同一または異なる種類のハロゲン原子である。）に示す構造を有するハロエタン（ＸがＦのみの場合を除く）である。 For example, the disproportionation inhibitor has the following formula (2)
C2HmXn ( 2 )
(where X in formula (2) is a halogen atom selected from the group consisting of F, Cl, Br, and I, m is an integer of 0 or more and n is an integer of 1 or more, and The sum of m and n is 6, and X is the same or different type of halogen atom when n is 2 or more.) (except when X is only F).

上記のように、１，１，２－トリフルオロエチレンを含有する冷媒成分に前記した不均化抑制剤を添加することにより、前記式（２）に示すハロエタンが、不均化反応の連鎖分岐反応を引き起こすフッ素ラジカル、フルオロメチルラジカル、およびフルオロメチレンラジカル等のラジカルを良好に捕捉する。 As described above, by adding the above-described disproportionation inhibitor to the refrigerant component containing 1,1,2-trifluoroethylene, the haloethane represented by the formula (2) is converted into chain branching of the disproportionation reaction. Radicals such as fluorine radicals, fluoromethyl radicals, and fluoromethylene radicals that cause reactions are well scavenged.

そのため、１，１，２－トリフルオロエチレンの不均化反応を有効に抑制したり、不均化反応の急激な進行を緩和したりすることができる。 Therefore, it is possible to effectively suppress the disproportionation reaction of 1,1,2-trifluoroethylene and moderate the rapid progress of the disproportionation reaction.

したがって、圧縮機自体の破損を未然に防止して安全性を一段と高めることができるとともに、不均化反応の急激な進行を抑制できるので、煤の発生量、すなわち、排気孔１２９からから排出される煤の排出量を大幅に抑制でき、使用者の不安感を更に低減することができる。 Therefore, damage to the compressor itself can be prevented to further improve safety, and rapid progress of the disproportionation reaction can be suppressed. Therefore, the amount of soot discharged can be greatly suppressed, and the anxiety of the user can be further reduced.

また、上記この不均化反応を抑制する不均化抑制剤としては、更に次のようなものであってもよい。 Further, as the disproportionation inhibitor for suppressing this disproportionation reaction, the following may be used.

すなわち、炭素数２～５の飽和炭化水素と、炭素数１または２であってハロゲン原子が全てフッ素の場合を除くハロアルカンと、からなるものである。 That is, they consist of saturated hydrocarbons having 2 to 5 carbon atoms and haloalkanes having 1 or 2 carbon atoms and excluding the case where all the halogen atoms are fluorine.

前記不均化抑制剤によれば、飽和炭化水素およびハロアルカンが、１，１，２－トリフルオロエチレンの不均化反応で生じるフッ素ラジカル、フルオロメチルラジカル、およびフルオロメチレンラジカル等のラジカルを良好に捕捉することができる。そのため、１，１，２－トリフルオロエチレンの不均化反応を有効に抑制したり、不均化反応の急激な進行を緩和したりすることができる。しかも、飽和炭化水素単独、または、ハロアルカン単独を不均化抑制剤として添加する場合よりも少ない量で不均化反応の抑制または進行の緩和を実現することも可能となる。その結果、作動媒体およびこれを用いた冷凍サイクル装置の信頼性を向上させることができる。 According to the disproportionation inhibitor, saturated hydrocarbons and haloalkanes effectively suppress radicals such as fluorine radicals, fluoromethyl radicals, and fluoromethylene radicals generated in the disproportionation reaction of 1,1,2-trifluoroethylene. can be captured. Therefore, it is possible to effectively suppress the disproportionation reaction of 1,1,2-trifluoroethylene and moderate the rapid progress of the disproportionation reaction. Moreover, it is also possible to suppress the disproportionation reaction or slow down the progress of the disproportionation reaction with a smaller amount than when the saturated hydrocarbon alone or the haloalkane alone is added as the disproportionation inhibitor. As a result, the reliability of the working medium and the refrigeration cycle apparatus using the same can be improved.

（実施の形態４）
本実施の形態は、前記各実施の形態の構成に加え、例えば圧縮機収納空間１２３に作動媒体による煤の吐出を検知する検知手段、例えば煤が高温であるので温度センサを設けて
おき、圧縮機収納空間１２３内の温度が所定温度以上になればこれを室内機側で表示させるようにしてある。 (Embodiment 4)
In this embodiment, in addition to the configuration of each of the above-described embodiments, for example, a detection means for detecting the discharge of soot by the working medium, for example, a temperature sensor is provided in the compressor housing space 123 because the soot is at a high temperature. When the temperature in the machine storage space 123 reaches or exceeds a predetermined temperature, this is displayed on the indoor unit side.

このようにすることにより、空気調和機が異常停止した場合、その異常停止の原因が不均化反応によるものであることを使用者に知らせることができる。したがって、不均化反応による不安感の低減だけでなく、その原因を明確にして使用者に安心感を与えることができ、好適である。 By doing so, when the air conditioner stops abnormally, the user can be notified that the cause of the abnormal stop is the disproportionation reaction. Therefore, it is possible not only to reduce the anxiety caused by the disproportionation reaction, but also to clarify the cause of the disproportionation reaction so that the user can feel secure.

以上、本発明について冷凍サイクル装置を空気調和機とした場合を例にして説明したが、これは圧縮機、凝縮器、膨張手段、および蒸発器等の構成要素が配管にて接続され、かつ、室外機を有する冷凍サイクル装置であれば具体的な適用例は特に限定されず、例えば、ヒートポンプ式給湯機等であってもよいものである。 As described above, the present invention has been described by taking the refrigeration cycle apparatus as an air conditioner as an example. A specific application example is not particularly limited as long as it is a refrigeration cycle apparatus having an outdoor unit, and for example, it may be a heat pump water heater or the like.

また、本実施の形態では、圧縮機として、ロータリ式圧縮機を例にして説明したが、これは他の圧縮形式、例えば、スクロール式、レシプロ式などの容積式圧縮機、もしくは、遠心式圧縮機等、いずれの圧縮機であってもよいものである。 In addition, in the present embodiment, a rotary compressor has been described as an example of a compressor. Any compressor may be used.

上述したように本発明は、不均化反応発生時の煤の吹き出しにより使用者が受ける不安感を和らげ、かつ、使用者に危害を与えるようなことを防止でき、ＨＦＯ１１２３を含む作動媒体を用いた冷凍サイクル装置の信頼性を向上させることができる。よって、住居及び業務用の各エアコン、ヒートポンプ式給湯機等に幅広く適用することができる。 INDUSTRIAL APPLICABILITY As described above, according to the present invention, a working medium containing HFO1123 can be used to alleviate the user's anxiety caused by the blowing out of soot when the disproportionation reaction occurs, and to prevent the user from being harmed. It is possible to improve the reliability of the refrigeration cycle device. Therefore, it can be widely applied to residential and commercial air conditioners, heat pump water heaters, and the like.

１０ 冷凍サイクル装置
１１ 室内機
１２ 室外機
１３ 配管
１４ 室内熱交換器
１５ 室外熱交換器
１６ 圧縮機
１７ 膨張手段
１８ 制御器
１９ 四方弁
２０ 外部電源
２１ 送風機
１２１ 室外機本体
１２２ 仕切板
１２３ 圧縮機収納空間
１２４ 制御収納室
１２５ 天板
１２６ 前板
１２７ 側壁カバー
１２８ 側壁
１２９ 排気孔（連通部）
１６１ 密閉容器
１６２ 電動機部
１６３ 圧縮機構部
１６４ 貯油部
１６５ クランクシャフト
１６６ 回転子
１６７ 固定子
１６９ 絶縁紙
１７０ 固定子巻線
１７１ リード線
１７２ 給電ターミナル
１７３ 圧縮室
１７４ シリンダ
１７５ ローリングピストン
１７６ 吐出マフラー
１７７ 吐出作動媒体空間
１７８ 吐出管
１７９ 吸入管
１８０ アキュームレータ
１８１ 圧力逃し機構
１８２ 溶接部
１８３ ガイド部材
１８４ 煤排出ガイド 10 Refrigeration cycle device 11 Indoor unit 12 Outdoor unit 13 Piping 14 Indoor heat exchanger 15 Outdoor heat exchanger 16 Compressor 17 Expansion means 18 Controller 19 Four-way valve 20 External power source 21 Blower 121 Outdoor unit body 122 Partition plate 123 Compressor storage Space 124 Control storage chamber 125 Top plate 126 Front plate 127 Side wall cover 128 Side wall 129 Exhaust hole (communication part)
161 Sealed container 162 Electric motor section 163 Compression mechanism section 164 Oil storage section 165 Crankshaft 166 Rotor 167 Stator 169 Insulating paper 170 Stator winding 171 Lead wire 172 Power supply terminal 173 Compression chamber 174 Cylinder 175 Rolling piston 176 Discharge muffler 177 Discharge operation Medium space 178 Discharge pipe 179 Suction pipe 180 Accumulator 181 Pressure relief mechanism 182 Welded portion 183 Guide member 184 Soot discharge guide

Claims (5)

圧縮機、室外熱交換器、膨張手段、室内熱交換器を有する冷凍サイクル回路に、１ ， １
，２ － トリフルオロエチレンを含む作動媒体を封入し、かつ、前記圧縮機を収納した室外機に圧縮機収納空間と前記室外機の外とを連通する連通部を設け、
前記室外機は前記室外機本体内に前記圧縮機、前記室外熱交換器を備え、前記圧縮機と前記室外熱交換器との間を仕切板で区切って前記圧縮機収納空間を形成し、前記圧縮機収納空間に前記圧縮機を設け、
前記連通部は前記圧縮機収納空間を構成する前記室外機の天板、前記室外機の前板、前記室外機本体、前記仕切板の部材の間に形成される隙間の総和面積よりも大きな面積とし、前記連通部は前記圧縮機収納空間を形成する壁面のうち、前記仕切板以外の壁面のいずれか一面にのみ設け、
前記仕切板には孔を設けない冷凍サイクル装置。 1, 1 in a refrigeration cycle circuit having a compressor, an outdoor heat exchanger, an expansion means, and an indoor heat exchanger
, 2-a working medium containing trifluoroethylene is enclosed, and an outdoor unit housing the compressor is provided with a communication portion that communicates the compressor housing space and the outside of the outdoor unit,
The outdoor unit includes the compressor and the outdoor heat exchanger in the outdoor unit body, and the compressor and the outdoor heat exchanger are separated by a partition plate to form the compressor storage space, The compressor is provided in the compressor storage space,
The communication portion has an area larger than the total area of gaps formed among members of the top plate of the outdoor unit, the front plate of the outdoor unit, the main body of the outdoor unit, and the partition plate, which constitute the compressor housing space. and the communication portion is provided only on one of the wall surfaces forming the compressor storage space, other than the partition plate ,
A refrigerating cycle apparatus in which the partition plate is not provided with holes . 前記連通部は前記圧縮機の最下部より上方に設けた請求項１記載の冷凍サイクル装置。 2. The refrigeration cycle apparatus according to claim 1, wherein said communicating portion is provided above the lowermost portion of said compressor. 前記連通部は前記室外機本体の背面に設けた請求項１または２記載の冷凍サイクル装置。 3. The refrigerating cycle apparatus according to claim 1, wherein said communication portion is provided on the rear surface of said outdoor unit main body. 前記圧縮機は不均化反応が生じる過度な圧力を外部に逃がす圧力逃がし部を設けた請求項１～３のいずれか１項記載の冷凍サイクル装置。 4. The refrigeration cycle apparatus according to any one of claims 1 to 3, wherein said compressor is provided with a pressure relief portion for releasing an excessive pressure causing a disproportionation reaction to the outside. 前記作動媒体に不均化抑制剤を添加した請求項１～４のいずれか１項記載の冷凍サイクル装置。 The refrigeration cycle apparatus according to any one of claims 1 to 4, wherein a disproportionation inhibitor is added to said working medium.
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Publication number Priority date Publication date Assignee Title
WO2015136979A1 (en) 2014-03-14 2015-09-17 三菱電機株式会社 Refrigeration cycle device
JP2017145380A (en) 2016-02-18 2017-08-24 パナソニックＩｐマネジメント株式会社 Actuation medium for refrigeration cycle and refrigeration cycle system
WO2017145713A1 (en) 2016-02-22 2017-08-31 旭硝子株式会社 Heat exchange unit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61123371U (en) * 1985-01-18 1986-08-04
JP2008157587A (en) * 2006-12-26 2008-07-10 Matsushita Electric Ind Co Ltd Air conditioner
JP2012110070A (en) * 2010-11-15 2012-06-07 Panasonic Corp Air conditioner
DE112012002154B4 (en) * 2011-05-19 2022-06-30 AGC Inc. Working medium and its use in a heat cycle process system
CN103547652B (en) * 2011-05-19 2016-06-29 旭硝子株式会社 Working media and heat circulating system
WO2017199345A1 (en) * 2016-05-17 2017-11-23 三菱電機株式会社 Air conditioner
CN207515096U (en) * 2017-11-13 2018-06-19 宁波奥克斯电气股份有限公司 Branching device and air-conditioning system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015136979A1 (en) 2014-03-14 2015-09-17 三菱電機株式会社 Refrigeration cycle device
JP2017145380A (en) 2016-02-18 2017-08-24 パナソニックＩｐマネジメント株式会社 Actuation medium for refrigeration cycle and refrigeration cycle system
WO2017145713A1 (en) 2016-02-22 2017-08-31 旭硝子株式会社 Heat exchange unit

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