JP2012013348A - Air conditioner - Google Patents

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Publication number
JP2012013348A
JP2012013348A JP2010151770A JP2010151770A JP2012013348A JP 2012013348 A JP2012013348 A JP 2012013348A JP 2010151770 A JP2010151770 A JP 2010151770A JP 2010151770 A JP2010151770 A JP 2010151770A JP 2012013348 A JP2012013348 A JP 2012013348A
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Prior art keywords
refrigerant
air conditioner
control means
alarm
detection means
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Japanese (ja)
Inventor
Akira Fujitaka
章 藤高
Yoshikazu Kawabe
義和 川邉
Kazuhiko Marumoto
一彦 丸本
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Panasonic Corp
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Panasonic Corp
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Priority to JP2010151770A priority Critical patent/JP2012013348A/en
Priority to EP11800326.8A priority patent/EP2589900B1/en
Priority to CN201180032871.6A priority patent/CN102971596B/en
Priority to US13/807,105 priority patent/US20130098576A1/en
Priority to AU2011272701A priority patent/AU2011272701B2/en
Priority to PCT/JP2011/001979 priority patent/WO2012001847A1/en
Publication of JP2012013348A publication Critical patent/JP2012013348A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/009—Indoor units, e.g. fan coil units characterised by heating arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • 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
    • F24F11/0001—Control or safety arrangements for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—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
    • 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
    • F24F11/46—Improving electric energy efficiency or saving
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52—Indication arrangements, e.g. displays
    • F24F11/526—Indication arrangements, e.g. displays giving audible indications
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F11/70—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
    • F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner improved in safety at the time of coolant leakage.SOLUTION: The air conditioner includes a temperature distribution detecting means 5 for detecting temperature distribution in a room 1, a coolant leakage detecting means for detecting coolant leakage, a blast control means for controlling an air sending means, and a wind direction control means for controlling the wind direction of the air sending means. When the leakage of a coolant is detected by the coolant leakage detecting means, the coolant is dispersed in a direction other than a resident and a hot object detected by the temperature distribution detecting means 5 by the blast control means and the wind direction control means, thereby improving safety.

Description

本発明は、エネルギー効率および安全性を向上できる空気調和機に関する。   The present invention relates to an air conditioner that can improve energy efficiency and safety.

現在、空気調和機などの冷媒には、オゾン層を破壊しないＨＦＣ系フロン冷媒が使用されている。しかしこのＨＦＣ系冷媒は、温暖化係数が非常に高く、温暖化防止のため、排出規制の対象となっている。そのため、温暖化係数の低いＨＦＣ系冷媒や炭化水素系冷媒などの自然冷媒を冷凍空調装置の冷媒として用いることが検討されている。ところがこの炭化水素系冷媒やＨＦＣ系冷媒でも比較的地球温暖化に影響の少ないＲ３２などの冷媒はその性質として可燃性であり、冷媒漏洩時の危険防止のため、可燃性冷媒を用いた一次側サイクルとブラインを用いた二次側サイクルを使用していた（例えば、特許文献１参照）。   Currently, HFC-based chlorofluorocarbon refrigerants that do not destroy the ozone layer are used for refrigerants such as air conditioners. However, this HFC refrigerant has a very high global warming potential and is subject to emission regulations to prevent global warming. Therefore, the use of natural refrigerants such as HFC refrigerants and hydrocarbon refrigerants having a low global warming potential as refrigerants for refrigeration air conditioners has been studied. However, such hydrocarbon refrigerants and HFC refrigerants, such as R32, which has relatively little effect on global warming, are flammable in nature, and the primary side using a flammable refrigerant is used to prevent danger during refrigerant leakage. A secondary side cycle using a cycle and brine was used (for example, see Patent Document 1).

特開平１０−３５２６６号公報JP-A-10-35266

しかしながら、上記従来の空気調和機では、可燃性冷媒を用いた一次側サイクルとブラインを用いた二次側サイクルで構成され、エネルギー効率を考慮した構成ではなかった。特にブライン循環ポンプの電気入力が増加し、エネルギー効率は低下するといった課題があった。   However, the conventional air conditioner is configured by a primary side cycle using a flammable refrigerant and a secondary side cycle using brine, and is not a configuration considering energy efficiency. In particular, there was a problem that the electrical input of the brine circulation pump increased and the energy efficiency decreased.

そこで、本発明は、冷媒として可燃性冷媒を使用したときのエネルギー効率および安全性を向上できる空気調和機を提供することを目的とする。   Then, an object of this invention is to provide the air conditioner which can improve energy efficiency and safety | security when a combustible refrigerant | coolant is used as a refrigerant | coolant.

前記従来の課題を解決するために、本発明の空調機は、部屋の温度分布を検出する温度分布検出手段、冷媒漏洩を検出する冷媒漏洩検出手段、送風手段を制御する送風制御手段、送風手段からの風向を制御する風向制御手段を備え、冷媒漏洩検出手段が冷媒漏洩を検出した時に送風制御手段かつ／または風向制御手段により、温度分布検出手段が検出した高温域以外の領域に漏洩した冷媒を拡散させるものである。   In order to solve the above-described conventional problems, an air conditioner according to the present invention includes a temperature distribution detection unit that detects a temperature distribution in a room, a refrigerant leak detection unit that detects a refrigerant leak, a blow control unit that controls a blow unit, and a blow unit. Refrigerant that leaks to a region other than the high-temperature region detected by the temperature distribution detection means by the air blow control means and / or the wind direction control means when the refrigerant leak detection means detects the refrigerant leak. Is to diffuse.

これによって、冷媒漏洩が発生した時に、温度分布検出手段により居住者や高温物を検出し、居住者や高温物とは異なる方向へ冷媒を拡散させることができる。   Accordingly, when refrigerant leakage occurs, the occupant and the high temperature object can be detected by the temperature distribution detecting means, and the refrigerant can be diffused in a direction different from the occupant and the high temperature object.

本発明によれば、エネルギー効率の高い空気調和機を実現できるとともに、安全性を向上することができる。   ADVANTAGE OF THE INVENTION According to this invention, while being able to implement | achieve an air conditioner with high energy efficiency, safety | security can be improved.

本発明の実施の形態１における空気調和機の設置例を示す設置図Installation diagram showing an installation example of the air conditioner in Embodiment 1 of the present invention 本発明の実施の形態１における空気調和機の制御回路図Control circuit diagram of the air conditioner in Embodiment 1 of the present invention 本発明の実施の形態２における空気調和機の制御回路図Control circuit diagram of air conditioner in Embodiment 2 of the present invention 本発明の実施の形態における冷媒混合比とＧＷＰとの関係を示す図The figure which shows the relationship between the refrigerant | coolant mixing ratio and GWP in embodiment of this invention.

第１の発明は、部屋の温度分布を検出する温度分布検出手段と、冷媒漏洩を検出する冷媒漏洩検出手段と、送風手段と、送風手段を制御する送風制御手段と、送風手段の風向を制御する風向制御手段とを備え、冷媒漏洩検出手段が冷媒漏洩を検出した時に送風制御手段かつ／または風向制御手段により、温度分布検出手段が検出した高温域以外の領域に漏洩した冷媒を拡散させるので、空気調和機により居住者と異なる方向へ冷媒を拡散させ、冷媒が居住者の付近に滞留することを防止することができる。また、冷媒の滞留や高温物による冷媒の分解を防止することができる。   1st invention controls the temperature direction detection means which detects the temperature distribution of a room, the refrigerant | coolant leak detection means which detects a refrigerant | coolant leak, a ventilation means, the ventilation control means which controls a ventilation means, and the wind direction of a ventilation means And a wind direction control means for diffusing the leaked refrigerant to a region other than the high temperature region detected by the temperature distribution detection means by the air blow control means and / or the wind direction control means when the refrigerant leak detection means detects the refrigerant leak. The refrigerant can be diffused in a different direction from the resident by the air conditioner, and the refrigerant can be prevented from staying in the vicinity of the resident. Further, it is possible to prevent the refrigerant from being accumulated and the refrigerant from being decomposed by the high temperature material.

第２の発明は、第１の発明において、冷媒漏洩検出手段が冷媒漏洩を検出した時に警報を発する冷媒漏洩警報手段を備え、冷媒漏洩警報手段は、音声かつ／または光で警報を発生させるので、居住者に異常を知らせ、危険を防止することができる。   According to a second invention, in the first invention, the refrigerant leak detection means includes a refrigerant leak alarm means that issues an alarm when the refrigerant leak detection detects the refrigerant leak, and the refrigerant leak alarm means generates an alarm by sound and / or light. Can inform the resident of the abnormality and prevent danger.

第３の発明は、第１または第２の発明において、他の機器と通信する通信手段を備え、他の機器の動作を制御することにより、通信手段を有す換気扇や扇風機を動作させ、漏洩した冷媒を、居住者や高温物とは異なる方向へ拡散させ、通信手段を有す高温物の停止を行い、冷媒の滞留や高温物による冷媒の分解を防止することができる。さらに、他の機器との通信手段により接続された警報装置等から警報を発生させることができ、居住者に異常を知らせ、危険を防止することができる。   According to a third invention, in the first or second invention, a communication means for communicating with other equipment is provided, and by controlling the operation of the other equipment, a ventilation fan or a fan having the communication means is operated to cause leakage. The refrigerated refrigerant is diffused in a direction different from that of the resident or the high temperature object, the high temperature object having the communication means is stopped, and the refrigerant can be prevented from staying or being decomposed by the high temperature object. Furthermore, an alarm can be generated from an alarm device or the like connected by means of communication with other devices, so that the resident can be notified of the abnormality and the danger can be prevented.

第４の発明は、第２または第３の発明において、冷媒漏洩検出手段および冷媒漏洩警報手段の電源として空気調和機のＤＣ電源と並列に設けられた蓄電池と、空気調和機の通電を確認する通電確認回路と、通電確認回路の信号により冷媒漏洩検出手段および冷媒漏洩警報手段の電源装置の選択を行う電源判定回路とを設けるもので、運転停止時や停電時に冷媒漏洩を検出した場合において蓄電池で電源供給し警報を発することができ、危険防止効果が大である。   According to a fourth invention, in the second or third invention, the storage battery provided in parallel with the DC power source of the air conditioner as the power source of the refrigerant leak detection means and the refrigerant leak alarm means, and energization of the air conditioner are confirmed. An energization confirmation circuit and a power determination circuit that selects the power supply device of the refrigerant leak detection means and the refrigerant leak alarm means based on the signal of the energization confirmation circuit are provided. When the refrigerant leak is detected at the time of operation stop or power failure, the storage battery Can supply power and issue an alarm, which has a great risk prevention effect.

第５の発明は、第１〜４のいずれか１つの発明において、冷媒漏洩検出手段により検出された冷媒濃度に応じて、冷媒漏洩警報手段、送風制御手段、風向制御手段、通信手段の少なくとも１つの動作を制御する制御手段を設けるので、冷媒漏洩誤検知防止のため設けられている濃度設定値より低い濃度の場合でも、冷媒漏洩警報手段、送風制御手段、風向制御手段、通信手段を動作させ、居住者に異常を知らせ、危険を防止することができる。   According to a fifth invention, in any one of the first to fourth inventions, at least one of the refrigerant leak warning means, the air flow control means, the wind direction control means, and the communication means according to the refrigerant concentration detected by the refrigerant leak detection means. Since the control means for controlling the two operations is provided, the refrigerant leakage alarm means, the air flow control means, the wind direction control means, and the communication means are operated even when the concentration is lower than the concentration set value provided for preventing erroneous detection of the refrigerant leakage. Can inform the resident of the abnormality and prevent danger.

第６の発明は、第１〜５のいずれか１つの発明において、可燃性冷媒を使用するもので、可燃性冷媒が漏洩したときに居住者や高温物とは異なる方向へ拡散させ、冷媒の滞留や高温物による可燃性冷媒の着火を防止することができる。   A sixth invention uses a flammable refrigerant in any one of the first to fifth inventions, and when the flammable refrigerant leaks, diffuses it in a direction different from that of a resident or a high temperature object, It is possible to prevent ignition of the flammable refrigerant due to stagnation or high temperature materials.

第７の発明は、第６の発明において、可燃性冷媒はＨＦＣ系冷媒または炭素の二重結合を持つフッ化水素系冷媒の単一冷媒またはそれらを主成分とする混合冷媒であるもので、可燃性冷媒が漏洩したときに居住者や高温物とは異なる方向へ拡散させ、冷媒の滞留や高温物による可燃性冷媒の着火を防止することができるとともに、地球温暖化への影響を低減できる。   In a seventh aspect based on the sixth aspect, the combustible refrigerant is an HFC type refrigerant or a single refrigerant of a hydrogen fluoride type refrigerant having a carbon double bond or a mixed refrigerant containing them as a main component. When flammable refrigerant leaks, it can diffuse in a direction different from residents and high-temperature materials to prevent stagnation of refrigerant and ignition of flammable refrigerants due to high-temperature materials, and reduce the impact on global warming .

第８の発明は、第６の発明において、可燃性冷媒は炭化水素の単一冷媒またはそれらを主成分とする混合冷媒であるもので、可燃性冷媒が漏洩したときに居住者や高温物とは異なる方向へ拡散させ、冷媒の滞留や高温物による可燃性冷媒の着火を防止することができるとともに、地球温暖化への影響を低減できる。   In an eighth aspect based on the sixth aspect, the flammable refrigerant is a hydrocarbon single refrigerant or a mixed refrigerant containing them as a main component. When the flammable refrigerant leaks, Can be diffused in different directions to prevent stagnation of the refrigerant and ignition of the flammable refrigerant due to high-temperature substances, and to reduce the influence on global warming.

第９の発明は、第７または第８の発明において、地球温暖化係数が５以上、７５０以下となるように、望ましくは３５０以下、さらに望ましくは１５０以下となるように、単一冷媒または２成分混合もしくは３成分混合した冷媒を用いるもので、可燃性冷媒が漏洩したときに居住者や高温物とは異なる方向へ拡散させ、冷媒の滞留や高温物による可燃性冷媒の着火を防止することができ、また、地球温暖化防止に貢献することができる。   According to a ninth invention, in the seventh or eighth invention, a single refrigerant or 2 so that the global warming potential is 5 or more and 750 or less, preferably 350 or less, and more preferably 150 or less. Uses mixed or three-component mixed refrigerant, and when flammable refrigerant leaks, diffuses it in a direction different from occupants and high-temperature materials to prevent stagnation of refrigerant and ignition of flammable refrigerant by high-temperature materials Can also contribute to the prevention of global warming.

第１０の発明は、第１〜９のいずれか１つの発明において、冷凍機油として、ポリオキシアルキレングリコール類、ポリビニルエーテル類、ポリ（オキシ）アルキレングリコールまたはそのモノエーテルとポリビニルエーテルの共重合体、ポリオールエステル類、及びポリカーボネート類のいずれかの含酸素化合物を主成分とする合成油か、アルキルベンゼン類やαオレフィン類を主成分とする合成油、または鉱油を用いるもので、可燃性冷媒の着火を防止することができ、また、空気調和機の信頼性の向上に貢献することができる。   In a tenth aspect of the present invention, in any one of the first to ninth aspects, as the refrigerating machine oil, polyoxyalkylene glycols, polyvinyl ethers, poly (oxy) alkylene glycol or a copolymer of a monoether thereof and polyvinyl ether, Uses synthetic oils mainly composed of oxygenated compounds of polyol esters and polycarbonates, synthetic oils mainly composed of alkylbenzenes and α-olefins, or mineral oils. Can be prevented, and can contribute to the improvement of the reliability of the air conditioner.

以下に、本発明の空気調和機の一実施例について説明する。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。   Below, one Example of the air conditioner of this invention is described. Note that the present invention is not limited to the embodiments.

（実施の形態１）
図１は、本発明の第１の実施の形態における空気調和機の設置例を示す設置図である。 (Embodiment 1)
FIG. 1 is an installation diagram showing an installation example of an air conditioner according to the first embodiment of the present invention.

図１において、部屋１には、空気調和機２が壁に設置されている。空気調和機２には、圧縮機、室内熱交換器、減圧器、室外熱交換器などから構成される冷凍サイクル回路を備えており、冷凍サイクル回路には、冷媒として可燃性冷媒であるＲ３２、Ｒ１５２ａ、Ｒ１６１等のＨＦＣ系冷媒や、ＨＦＯ−１２３４ｙｆ、ＨＦＯ−１２３４ｚｅ、ＨＦＯ−１２４３ｚｆ等の炭素の二重結合を持つフッ化炭素系冷媒が封入されている。   In FIG. 1, in a room 1, an air conditioner 2 is installed on a wall. The air conditioner 2 includes a refrigeration cycle circuit including a compressor, an indoor heat exchanger, a decompressor, an outdoor heat exchanger, and the like. The refrigeration cycle circuit includes R32, which is a flammable refrigerant as a refrigerant, An HFC refrigerant such as R152a and R161, and a fluorocarbon refrigerant having a carbon double bond such as HFO-1234yf, HFO-1234ze, and HFO-1243zf are enclosed.

また、空気調和機２には、空気調和機２や冷媒配管（図示せず）からの冷媒漏洩を検出する冷媒漏洩検出手段９、冷媒漏洩警報手段６としてブザー等の警報音を発する警報音発生手段７、警報光を発する警報光発生手段８、部屋１内の温度分布を検出する温度分布検出手段５、通信手段２０とを設けている。   Further, the air conditioner 2 generates an alarm sound that emits an alarm sound such as a buzzer as the refrigerant leak detection means 9 for detecting the refrigerant leak from the air conditioner 2 and the refrigerant pipe (not shown) and the refrigerant leak alarm means 6. Means 7, warning light generating means 8 for emitting warning light, temperature distribution detecting means 5 for detecting the temperature distribution in the room 1, and communication means 20 are provided.

温度分布検出手段５は、例えば、温度が高い物体に反応する焦電素子と赤外線を検出する視野範囲を広げるフレネルレンズで構成されたセンサや、多数の焦電素子を配列することで部屋１内の熱画像を検出する赤外線画像センサを用いて、部屋１内の温度分布を検知するようになっている。   For example, the temperature distribution detecting means 5 includes a sensor composed of a pyroelectric element that reacts to an object having a high temperature and a Fresnel lens that expands the visual field range for detecting infrared rays, and a large number of pyroelectric elements arranged in the room 1. The temperature distribution in the room 1 is detected using an infrared image sensor that detects the thermal image of the room.

また、空気調和機２には、部屋１内に空気を送風する送風手段（図示せず）が設けられている。送風手段としては、クロスフローファン、ターボファンなどが適用できる。   The air conditioner 2 is provided with a blowing means (not shown) for blowing air into the room 1. A cross flow fan, a turbo fan, etc. are applicable as a ventilation means.

部屋１内には、居住者３、通信手段を有すストーブやコンロ等の高温物４、通信手段を有す扇風機２１、通信手段を有す換気扇２２が存在する。また、部屋１の外、例えば、他の部屋には設置された通信手段を有す警報装置２３が設置されている。   In the room 1, there are a resident 3, a high-temperature object 4 such as a stove or a stove having communication means, a fan 21 having communication means, and a ventilation fan 22 having communication means. Further, outside the room 1, for example, in another room, an alarm device 23 having communication means installed is installed.

図２はこの空気調和機の制御回路図である。図２において、この制御回路は、冷媒漏洩検出手段９の出力信号により冷媒漏洩を判断する判定回路１４、判定回路１４の信号により動作する出力回路１６、出力回路１６により冷媒漏洩を警報する冷媒漏洩警報手段６としてブザー等の警報音を発する警報音発生手段７、警報光を発する警報光発生手段８、通信手段２０を備えている。また、出力回路１６には、送風手段の運転、停止や回転数の制御を行う送風制御手段１０、送風手段から送風される風の方向を上下、左右に変更する風向制御手段１１が接続されている。また、制御回路は、運転スイッチ１２、入力回路１３、記憶回路１５を備えている。   FIG. 2 is a control circuit diagram of the air conditioner. In FIG. 2, this control circuit includes a determination circuit 14 that determines refrigerant leakage based on an output signal from the refrigerant leakage detection means 9, an output circuit 16 that operates based on a signal from the determination circuit 14, and a refrigerant leakage that warns refrigerant leakage using the output circuit 16. As the alarm means 6, an alarm sound generating means 7 for emitting an alarm sound such as a buzzer, an alarm light generating means 8 for emitting an alarm light, and a communication means 20 are provided. Also connected to the output circuit 16 are an air blow control means 10 for operating, stopping and controlling the rotation speed of the air blowing means, and an air direction control means 11 for changing the direction of the air blown from the air blowing means up and down and left and right. Yes. The control circuit includes an operation switch 12, an input circuit 13, and a storage circuit 15.

上記構成要素において、冷媒漏洩検出手段９から冷媒漏洩を示す出力信号が出力されると判定回路１４により冷媒漏洩であることが判定され、出力回路１６により冷媒漏洩警報手段６へ信号が送られる。この信号により、警報音発生手段７から警報音が発せられ、警報光発生手段８のＬＥＤが点滅される。これにより、空気調和機２より冷媒が漏れている場合には、警報音発生手段７から警報音が発せられ、警報光発生手段８のＬＥＤが点滅されて、居住者３に冷媒漏洩の危険が警報される。   In the above components, when an output signal indicating refrigerant leakage is output from the refrigerant leakage detection means 9, the determination circuit 14 determines that the refrigerant is leaking, and the output circuit 16 sends a signal to the refrigerant leakage alarm means 6. By this signal, an alarm sound is emitted from the alarm sound generating means 7 and the LED of the alarm light generating means 8 is blinked. Thereby, when the refrigerant is leaking from the air conditioner 2, an alarm sound is emitted from the alarm sound generating means 7, the LED of the alarm light generating means 8 is blinked, and there is a risk of refrigerant leakage to the occupant 3. Be alerted.

さらに、温度分布検出手段５により部屋の温度分布を計測し、居住者３や高温物４を検出し、空気調和機２の送風手段を制御する送風制御手段１０、空気調和機２の風向を制御する風向制御手段１１により、空気調和機２の送風や風向を制御する。   Further, the temperature distribution detection means 5 measures the temperature distribution of the room, detects the occupant 3 and the high temperature object 4, and controls the air blowing control means 10 for controlling the air blowing means of the air conditioner 2 and the air direction of the air conditioner 2. The air direction control means 11 to control the air blowing and the wind direction of the air conditioner 2.

また、通信手段２０により、通信手段を有すストーブやコンロ等の高温物４の運転を停止したり電源を切断したりし、さらに、通信手段を有す扇風機２１や、通信手段を有す換気扇２２を動作させ、漏洩した冷媒を、居住者３や高温物４とは異なる方向へ拡散させ、冷媒の滞留や高温物４による冷媒の分解や可燃性冷媒の着火を防止することができる。   Further, the communication means 20 stops the operation of the high-temperature object 4 such as a stove or stove having the communication means or cuts off the power supply, and further, the fan 21 having the communication means or the ventilation fan having the communication means. 22 is operated, and the leaked refrigerant is diffused in a direction different from that of the occupant 3 and the high-temperature object 4, and the retention of the refrigerant, the decomposition of the refrigerant by the high-temperature object 4 and the ignition of the combustible refrigerant can be prevented.

さらに他の部屋に設置された通信手段を有す警報装置２３から警報を発生させ、他の部屋の居住者に異常を知らせ、危険を防止することができる。   Furthermore, an alarm can be generated from the alarm device 23 having a communication means installed in another room, so that a resident in the other room can be notified of the abnormality and the danger can be prevented.

本実施の形態によれば、エネルギー効率の高い空気調和機を実現できるとともに、冷媒漏洩が発生した時に、温度分布検出手段により居住者や高温物を検出し、居住者や高温物とは異なる方向へ冷媒を拡散させ、冷媒の滞留や高温物による冷媒の分解を防止することができる。さらに、可燃性冷媒の場合、可燃性冷媒が高温物により着火することを防止することができる。   According to the present embodiment, an air conditioner with high energy efficiency can be realized, and when refrigerant leakage occurs, a resident or a high temperature object is detected by the temperature distribution detection means, and the direction is different from that of the resident or the high temperature object. The refrigerant can be diffused to prevent stagnation of the refrigerant and decomposition of the refrigerant due to high-temperature substances. Furthermore, in the case of a flammable refrigerant, the flammable refrigerant can be prevented from being ignited by a high-temperature material.

（実施の形態２）
図３は、本発明の第２の実施の形態における空気調和機２の制御回路図である。本実施の形態において、実施の形態１と同じ構成は同じ符号を付し、説明を省略する。図３において、この制御回路には、冷媒漏洩検出手段９、冷媒漏洩警報手段６、通信手段２０の電源装置として空気調和機２のＤＣ電源３２と並列に設けられた蓄電池３３が設けられている。また、空気調和機２の通電を確認する通電確認回路３０と、この通電確認回路３０の信号により冷媒漏洩検出手段９、冷媒漏洩警報手段６、通信手段２０の電源装置の選択を行う電源判定回路３１とが設けられている。 (Embodiment 2)
FIG. 3 is a control circuit diagram of the air conditioner 2 according to the second embodiment of the present invention. In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In FIG. 3, this control circuit is provided with a storage battery 33 provided in parallel with the DC power supply 32 of the air conditioner 2 as a power supply device for the refrigerant leak detection means 9, the refrigerant leak warning means 6, and the communication means 20. . In addition, an energization confirmation circuit 30 that confirms energization of the air conditioner 2 and a power supply determination circuit that selects a power supply device for the refrigerant leak detection means 9, the refrigerant leak alarm means 6, and the communication means 20 based on a signal from the energization confirmation circuit 30. 31 is provided.

次に、この空気調和機２の制御動作を説明する。通電確認回路３０の出力信号により空気調和機２が通電されていると判断すると、冷媒漏洩検出手段９、冷媒漏洩警報手段６、通信手段２０の電源は、電源判定回路３１によりＤＣ電源３２側が選択される。一方、通電確認回路３０の出力信号により空気調和機２が通電されていないと判断すると、電源判定回路３１により冷媒漏洩検出手段９、冷媒漏洩警報手段６、通信手段２０の電源は蓄電池３３が選択される。   Next, the control operation of the air conditioner 2 will be described. When it is determined that the air conditioner 2 is energized based on the output signal of the energization confirmation circuit 30, the power source determination circuit 31 selects the DC power source 32 as the power source for the refrigerant leak detection unit 9, the refrigerant leak alarm unit 6, and the communication unit 20. Is done. On the other hand, when it is determined that the air conditioner 2 is not energized based on the output signal of the energization confirmation circuit 30, the storage battery 33 selects the power source of the refrigerant leakage detection means 9, the refrigerant leakage alarm means 6, and the communication means 20 by the power supply determination circuit 31. Is done.

本実施の形態によれば、蓄電池３３をＤＣ電源３２と並列に設け、未使用時などの空気調和機２の電源が入っていない時や停電時には、蓄電池３３を作動させて冷媒漏洩検出手段９、冷媒漏洩警報手段６、通信手段２０を動作させることにより、空気調和機２の電源が入っていない時や停電時でも居住者３に冷媒漏洩の危険を告知できる。   According to the present embodiment, the storage battery 33 is provided in parallel with the DC power supply 32, and when the air conditioner 2 is not turned on or is not in use or when a power failure occurs, the storage battery 33 is activated to detect the refrigerant leakage detection means 9. By operating the refrigerant leakage warning means 6 and the communication means 20, it is possible to notify the resident 3 of the risk of refrigerant leakage even when the air conditioner 2 is not turned on or during a power failure.

なお、この実施の形態において、さらに蓄電池３３で駆動する室内機電源作動手段（図示せず）を設けてもよい。この場合には、冷媒漏洩検出手段９の検出信号により、空気調和機２の電源が入っていない時に、室内機電源作動手段により空気調和機２に通電を開始することができる。これにより、蓄電池３３のみでは十分な電力を供給できない温度分布検出手段５、送風制御手段１０、風向制御手段１１、送風手段などにも電源を供給できる。   In this embodiment, an indoor unit power supply operating means (not shown) driven by the storage battery 33 may be further provided. In this case, energization of the air conditioner 2 can be started by the indoor unit power supply operating means when the power of the air conditioner 2 is not turned on by the detection signal of the refrigerant leakage detection means 9. Thereby, it is possible to supply power to the temperature distribution detection means 5, the air blow control means 10, the wind direction control means 11, the air blow means and the like which cannot supply sufficient power only by the storage battery 33.

このため、温度分布検出手段５により部屋の温度分布を計測し、居住者３や高温物４を検出し、空気調和機２の送風を制御する送風制御手段１０、空気調和機２の風向を制御する風向制御手段１１を動作させ、空気調和機２の送風や風向を制御し、さらに、通信手段２０により、通信手段を有すストーブやコンロ等の高温物４の運転を停止したり電源を切断したりし、通信手段を有す扇風機２１や、通信手段を有す換気扇２２を動作させ、漏洩した冷媒を、居住者３や高温物４とは異なる方向へ拡散させ、冷媒の滞留や高温物４による冷媒の分解や可燃性冷媒の着火を防止することができる。   For this reason, the temperature distribution detection means 5 measures the temperature distribution in the room, detects the occupants 3 and the high-temperature objects 4, and controls the air blow control means 10 for controlling the air blow of the air conditioner 2 and the air direction of the air conditioner 2. The air direction control means 11 is operated to control the air blowing and the wind direction of the air conditioner 2, and further, the communication means 20 stops the operation of the high-temperature object 4 such as a stove or stove having the communication means, or cuts off the power supply. The fan 21 having communication means and the ventilation fan 22 having communication means are operated, and the leaked refrigerant is diffused in a direction different from that of the occupants 3 and the high-temperature objects 4, so 4 can prevent decomposition of the refrigerant and ignition of the combustible refrigerant.

また、通信手段２０により、他の部屋に設置された通信手段を有す警報装置２３から警報を発し、冷媒漏洩が発生した部屋とは異なる部屋に居住者がいた場合でも、居住者に異常を告知することはでき、安全性を高めることができる。   Moreover, even if the resident is in a room different from the room where the refrigerant leaked, the communication means 20 issues an alarm from the alarm device 23 having the communication means installed in another room. Can be announced and can increase safety.

なお、通常、冷媒漏洩検出手段９は、冷媒漏洩誤検知防止のため、一定の冷媒濃度設定値を設け、その設定値以上の冷媒濃度を検出した場合に、冷媒漏洩警報手段６、送風制御手段１０、風向制御手段１１、冷媒漏洩警報手段６、通信手段２０を動作させている。これに対し、冷媒漏洩検出手段９は、複数の冷媒濃度設定値を備えており、検出した濃度に応じて、冷媒漏洩警報手段６、送風制御手段１０、風向制御手段１１、通信手段２０のいずれか１つの動作を制御するようにしてもよい。例えば、温度分布検出手段５により高温物を検出した場合は、冷媒漏洩検出手段９により検出された冷媒濃度が、通常の冷媒濃度設定値より低い場合でも、冷媒漏洩警報手段６、送風制御手段１０、風向制御手段１１、冷媒漏洩警報手段６、通信手段２０を動作させ、居住者に異常を知らせ、危険を防止することができる。   Normally, the refrigerant leak detection means 9 is provided with a constant refrigerant concentration set value to prevent erroneous detection of refrigerant leak, and when a refrigerant concentration higher than the set value is detected, the refrigerant leak alarm means 6 and the air blow control means. 10, the wind direction control means 11, the refrigerant leak warning means 6, and the communication means 20 are operated. On the other hand, the refrigerant leak detection means 9 includes a plurality of refrigerant concentration setting values, and any one of the refrigerant leak alarm means 6, the air blow control means 10, the wind direction control means 11, and the communication means 20 is selected according to the detected concentration. Alternatively, one operation may be controlled. For example, when a high temperature object is detected by the temperature distribution detection means 5, even when the refrigerant concentration detected by the refrigerant leakage detection means 9 is lower than the normal refrigerant concentration set value, the refrigerant leakage alarm means 6 and the air blow control means 10 The wind direction control means 11, the refrigerant leakage warning means 6, and the communication means 20 can be operated to notify the occupant of the abnormality and prevent danger.

なお、警報音発生手段７は、ブザー音等の信号音に限らず、記憶回路１５のメモリに記憶された言葉を、音声合成による声で発生するようにすれば、より高い危険防止効果が得ることができる。又、予め記憶された複数の言葉の中から居住者３が有効と考える言葉を自由に選択できるようにしても良い。   Note that the alarm sound generating means 7 is not limited to a signal sound such as a buzzer sound, but if a word stored in the memory of the storage circuit 15 is generated by a voice by voice synthesis, a higher risk prevention effect can be obtained. be able to. Moreover, you may enable it to select freely the word which the resident 3 considers effective from several words memorize | stored beforehand.

なお、冷媒として、プロパンやイソブタン等の炭化水素を主成分とする冷媒を使用する場合でも、同様な効果をえる事ができる。また、Ｒ３２、Ｒ１５２ａ、Ｒ１６１等のＨＦＣ系冷媒や、ＨＦＯ−１２３４ｙｆ、ＨＦＯ−１２３４ｚｅ、ＨＦＯ−１２４３ｚｆ等の炭素の二重結合を持つフッ化炭素系冷媒や、プロパンやイソブタン等の炭化水素冷媒を混合した冷媒であってもよい。   The same effect can be obtained even when a refrigerant mainly composed of hydrocarbons such as propane and isobutane is used as the refrigerant. In addition, HFC refrigerants such as R32, R152a and R161, fluorocarbon refrigerants having a carbon double bond such as HFO-1234yf, HFO-1234ze, and HFO-1243zf, and hydrocarbon refrigerants such as propane and isobutane are used. A mixed refrigerant may be used.

例えば、ＨＦＯ１２３４ｙｆを基本成分にＲ３２を、地球温暖化係数（ＧＷＰ）が５以上で７５０以下、望ましくは５以上で３５０以下、さらに望ましくは１５０以下となるようにそれぞれ２成分混合もしくは３成分混合した冷媒であってもよい。   For example, R32 with HFO1234yf as a basic component is mixed in two or three components so that the global warming potential (GWP) is 5 or more and 750 or less, preferably 5 or more and 350 or less, and more preferably 150 or less. A refrigerant may be used.

図４は、ＨＦＯ−１２３４ｙｆとＲ３２との２成分を混合した冷媒の混合比率による地球温暖化係数を示した特性図である。例えば、２成分混合の場合にはＨＦＯ−１２３４ｙｆとＲ３２とを混合してＧＷＰ３００以下とするためにはＲ３２を５１ｗｔ％以下で混合することになる。また、ＧＷＰ１５０以下とするためにはＲ３２を２１ｗｔ％以下で混合することになる。   FIG. 4 is a characteristic diagram showing a global warming potential according to a mixing ratio of a refrigerant in which two components of HFO-1234yf and R32 are mixed. For example, in the case of mixing two components, in order to mix HFO-1234yf and R32 to GWP300 or less, R32 is mixed at 51 wt% or less. Moreover, in order to make GWP150 or less, R32 is mixed at 21 wt% or less.

また、冷媒をＨＦＯ１２３４ｙｆの単一冷媒とした時にはＧＷＰ４となり極めて良好な値を示す。しかしながら、ＨＦＣ系冷媒と混合した冷媒に比べて比容積が大きいことなどから冷凍能力が低くなるため、空気調和機２が大型化する恐れがある。換言すれば、炭素と炭素間に２重結合を有するフッ化炭素系冷媒を基本成分とし、２重結合を有しないＨＦＣ系冷媒を混合した冷媒を用いれば、炭素と炭素間に２重結合を有するフッ化炭素系冷媒の単一冷媒と比較して冷凍能力などの所定の特性を改善して冷媒として使用しやすくすることができる。したがって、封入する冷媒において、単一冷媒を含めてＨＦＣ系冷媒の割合をどれほどにするかは、ＧＷＰの制限などの条件に応じて適宜選択すればよい。   Further, when the refrigerant is a single refrigerant of HFO1234yf, it becomes GWP4 and shows a very good value. However, since the refrigerating capacity is reduced because the specific volume is larger than the refrigerant mixed with the HFC refrigerant, the air conditioner 2 may be increased in size. In other words, if a fluorocarbon refrigerant having a double bond between carbon and carbon is used as a basic component and a refrigerant mixed with an HFC refrigerant not having a double bond is used, a double bond is formed between carbon and carbon. It is possible to improve the predetermined characteristics such as the refrigerating capacity and make it easy to use as a refrigerant as compared with a single fluorocarbon refrigerant. Therefore, what is necessary is just to select suitably how much the ratio of HFC type refrigerant | coolants including a single refrigerant | coolant is made into the refrigerant | coolants to be sealed according to conditions, such as restrictions of GWP.

また、空気調和機２の冷凍サイクルを構成する圧縮機（図示せず）に用いる冷凍機油として、ポリオキシアルキレングリコール類、ポリビニルエーテル類、ポリ（オキシ）アルキレングリコールまたはそのモノエーテルとポリビニルエーテルの共重合体、ポリオールエステル類、及びポリカーボネート類のいずれかの含酸素化合物を主成分とする合成油か、アルキルベンゼン類やαオレフィン類を主成分とする合成油、または鉱油を用いるもので、空気調和機の信頼性の向上に貢献することができる。   Further, as refrigerating machine oil used for a compressor (not shown) constituting the refrigerating cycle of the air conditioner 2, polyoxyalkylene glycols, polyvinyl ethers, poly (oxy) alkylene glycol or a monoether thereof and polyvinyl ether are used. An air conditioner using a synthetic oil mainly composed of an oxygen-containing compound of polymers, polyol esters and polycarbonates, a synthetic oil mainly composed of alkylbenzenes and α-olefins, or a mineral oil. Can contribute to the improvement of reliability.

本発明によれば、安価且つ容易に、冷媒漏洩警報手段を、温度分布検出機能を有した空気調和機に設けるもので、冷媒を使用する冷凍サイクルを有す除湿機、冷蔵庫等さまざまな機器に搭載可能であり、危険を回避することができる。   According to the present invention, the refrigerant leak warning means is provided in an air conditioner having a temperature distribution detection function inexpensively and easily, and can be used in various devices such as a dehumidifier and a refrigerator having a refrigeration cycle using a refrigerant. It can be installed, and danger can be avoided.

１ 部屋
２ 空気調和機
３ 居住者
４ 高温物
５ 温度分布検出手段
６ 冷媒漏洩警報手段
７ 警報音発生手段
８ 警報光発生手段
９ 冷媒漏洩検出手段
１０ 送風制御手段
１１ 風向制御手段
１２ 運転スイッチ
１３ 入力回路
１４ 判定回路
１５ 記憶回路
１６ 出力回路
２０ 通信手段
２１ 通信手段を有す扇風機（他の機器）
２２ 通信手段を有す換気扇（他の機器）
２３ 通信手段を有す警報装置（他の機器）
３０ 通電確認回路
３１ 電源判定回路
３２ ＤＣ電源
３３ 蓄電池 DESCRIPTION OF SYMBOLS 1 Room 2 Air conditioner 3 Resident 4 High temperature object 5 Temperature distribution detection means 6 Refrigerant leak alarm means 7 Alarm sound generation means 8 Alarm light generation means 9 Refrigerant leak detection means 10 Blower control means 11 Wind direction control means 12 Operation switch 13 Input Circuit 14 Judgment circuit 15 Memory circuit 16 Output circuit 20 Communication means 21 Fan having other communication means (other equipment)
22 Ventilation fan with other means of communication (other equipment)
23 Alarm device with communication means (other equipment)
30 Energization Confirmation Circuit 31 Power Supply Determination Circuit 32 DC Power Supply 33 Storage Battery

Claims (10)

部屋の温度分布を検出する温度分布検出手段と、冷媒漏洩を検出する冷媒漏洩検出手段と、送風手段と、前記送風手段を制御する送風制御手段と、前記送風手段の風向を制御する風向制御手段とを備え、前記冷媒漏洩検出手段が冷媒漏洩を検出した時に前記送風制御手段かつ／または前記風向制御手段により、前記温度分布検出手段が検出した高温域以外の領域に漏洩した冷媒を拡散させることを特徴とする空気調和機。 Temperature distribution detection means for detecting the temperature distribution of the room, refrigerant leakage detection means for detecting refrigerant leakage, blower means, blower control means for controlling the blower means, and wind direction control means for controlling the wind direction of the blower means And when the refrigerant leakage detection means detects refrigerant leakage, the air flow control means and / or the wind direction control means diffuses the leaked refrigerant to a region other than the high temperature range detected by the temperature distribution detection means. Air conditioner characterized by. 前記冷媒漏洩検出手段が冷媒漏洩を検出した時に警報を発する冷媒漏洩警報手段を備え、前記冷媒漏洩警報手段は、音声かつ／または光で警報を発生させることを特徴とする請求項１に記載の空気調和機。 2. The refrigerant leak alarm means that issues an alarm when the refrigerant leak detection means detects refrigerant leak, and the refrigerant leak alarm means generates an alarm by voice and / or light. Air conditioner. 他の機器と通信する通信手段を備え、前記他の機器の動作を制御することを特徴とする請求項１または２に記載の空気調和機。 The air conditioner according to claim 1, further comprising a communication unit that communicates with another device, and controlling an operation of the other device. 前記冷媒漏洩検出手段および前記冷媒漏洩警報手段の電源として空気調和機のＤＣ電源と並列に設けられた蓄電池と、空気調和機の通電を確認する通電確認回路と、前記通電確認回路の信号により前記冷媒漏洩検出手段および前記冷媒漏洩警報手段の電源装置の選択を行う電源判定回路とを設けることを特徴とする請求項２または３に記載の空気調和機。 As a power source for the refrigerant leakage detection means and the refrigerant leakage warning means, a storage battery provided in parallel with a DC power supply of an air conditioner, an energization confirmation circuit for confirming energization of the air conditioner, and a signal from the energization confirmation circuit The air conditioner according to claim 2 or 3, further comprising: a power source determination circuit that selects a power source device for the refrigerant leakage detection unit and the refrigerant leakage warning unit. 前記冷媒漏洩検出手段により検出された冷媒濃度に応じて、前記冷媒漏洩警報手段、前記送風制御手段、前記風向制御手段、前記通信手段の少なくとも１つの動作を制御する制御手段を設けることを特徴とする請求項１〜４のいずれか１項に記載の空気調和機。 Control means for controlling at least one operation of the refrigerant leak warning means, the air flow control means, the wind direction control means, and the communication means according to the refrigerant concentration detected by the refrigerant leak detection means is provided. The air conditioner according to any one of claims 1 to 4. 可燃性冷媒を使用したことを特徴とする請求項１〜５のいずれか１項に記載の空気調和機。 The air conditioner according to any one of claims 1 to 5, wherein a flammable refrigerant is used. 前記可燃性冷媒はＨＦＣ系冷媒または炭素の二重結合を持つフッ化水素系冷媒の単一冷媒またはそれらを主成分とする混合冷媒であることを特徴とする請求項６に記載の空気調和機。 7. The air conditioner according to claim 6, wherein the combustible refrigerant is an HFC refrigerant, a single refrigerant of a hydrogen fluoride refrigerant having a carbon double bond, or a mixed refrigerant containing them as a main component. . 前記可燃性冷媒は炭化水素の単一冷媒またはそれらを主成分とする混合冷媒であることを特徴とする請求項６に記載の空気調和機。 The air conditioner according to claim 6, wherein the combustible refrigerant is a hydrocarbon single refrigerant or a mixed refrigerant containing them as a main component. 前記可燃性冷媒として、地球温暖化係数が５以上、７５０以下となるように、望ましくは３５０以下、さらに望ましくは１５０以下となるように、単一冷媒または２成分混合もしくは３成分混合した冷媒を用いたことを特徴とする請求項７または８に記載の空気調和機。 As the flammable refrigerant, a single refrigerant or a mixture of two or three components is used so that the global warming potential is 5 or more and 750 or less, preferably 350 or less, and more preferably 150 or less. The air conditioner according to claim 7 or 8, wherein the air conditioner is used. 冷凍機油として、ポリオキシアルキレングリコール類、ポリビニルエーテル類、ポリ（オキシ）アルキレングリコールまたはそのモノエーテルとポリビニルエーテルの共重合体、ポリオールエステル類、及びポリカーボネート類のいずれかの含酸素化合物を主成分とする合成油か、アルキルベンゼン類やαオレフィン類を主成分とする合成油、または鉱油を用いることを特徴とする請求項１〜９のいずれか１項に記載の空気調和機。 As a refrigerating machine oil, polyoxyalkylene glycols, polyvinyl ethers, poly (oxy) alkylene glycol or a copolymer of its monoether and polyvinyl ether, a polyol ester, and an oxygen-containing compound of polycarbonates as a main component The air conditioner according to any one of claims 1 to 9, wherein a synthetic oil, a synthetic oil mainly composed of alkylbenzenes or α-olefins, or a mineral oil is used.
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