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WO2017199345A1 - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
WO2017199345A1
WO2017199345A1 PCT/JP2016/064643 JP2016064643W WO2017199345A1 WO 2017199345 A1 WO2017199345 A1 WO 2017199345A1 JP 2016064643 W JP2016064643 W JP 2016064643W WO 2017199345 A1 WO2017199345 A1 WO 2017199345A1
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WO
WIPO (PCT)
Prior art keywords
refrigerant
gas sensor
discharge port
pipe
air conditioner
Prior art date
Application number
PCT/JP2016/064643
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French (fr)
Japanese (ja)
Inventor
岡本　晃
健太 野村
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2018517977A priority Critical patent/JP6545373B2/en
Priority to PCT/JP2016/064643 priority patent/WO2017199345A1/en
Publication of WO2017199345A1 publication Critical patent/WO2017199345A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B45/00—Arrangements for charging or discharging refrigerant

Definitions

  • the present invention relates to an air conditioner capable of smoothly dealing with refrigerant leakage.
  • Fluorocarbon refrigerants used in air conditioners have stable physical properties and are easy to handle. On the other hand, they are said to destroy the ozone layer. Since hydrocarbon-based refrigerants used as an alternative to fluorocarbon refrigerants are flammable, it is necessary to prevent explosions and ignition.
  • the present invention has been made in view of the above, and an object of the present invention is to obtain an air conditioner that can quickly cope with a refrigerant leak.
  • an air conditioner is an air conditioner including an indoor unit, an outdoor unit, and a compressor provided in the outdoor unit, Two pipes that connect each of the indoor unit and the indoor unit, and a refrigerant flows; and a first gas sensor that is provided in the indoor unit and that is provided near a first pipe that is one of the two pipes; A second gas sensor provided in the indoor unit and provided near a second pipe which is the other of the two pipes; and the first pipe and the compressor provided in the outdoor unit. Provided in the outdoor unit, and provided between the second pipe and the compressor. The first refrigerant discharge port that is controlled by the first gas sensor and discharges the refrigerant is provided between the second pipe and the compressor.
  • the refrigerant is controlled by the second gas sensor.
  • a second refrigerant discharge port that exits, and when the refrigerant is detected by the first gas sensor, the refrigerant is discharged from the first refrigerant discharge port, and the refrigerant is detected by the second gas sensor. When this is done, the refrigerant is discharged from the second refrigerant discharge port.
  • the air conditioner according to the present invention has an effect of being able to quickly cope with a refrigerant leak.
  • the block diagram of the air conditioner which concerns on Embodiment 1 of this invention The flowchart for demonstrating operation
  • FIG. FIG. 1 is a configuration diagram of an air conditioner according to Embodiment 1 of the present invention.
  • the air conditioner 100 according to Embodiment 1 includes an indoor unit 1, an outdoor unit 2, and a compressor 3 provided in the outdoor unit 2.
  • the air conditioner 100 connects the indoor unit 1 and the indoor unit 1 to each other, and the first pipe 4a that is one pipe through which the refrigerant flows, and the other pipe through which the refrigerant flows through the indoor unit 1 and the indoor unit 1 are connected.
  • the second pipe 4b and the first gas sensor 5 provided in the indoor unit 1 near the first pipe 4a, and provided in the indoor unit 1 near the second pipe 4b.
  • the second gas sensor 6 is provided.
  • the air conditioner 100 also includes a first refrigerant discharge port 7 and a second refrigerant discharge port 8.
  • the first refrigerant discharge port 7 is provided in the outdoor unit 2, is provided between the first pipe 4 a and the compressor 3, and is controlled by the first gas sensor 5 to discharge the refrigerant.
  • the second refrigerant discharge port 8 is provided in the outdoor unit 2, is provided between the second pipe 4b and the compressor 3, and is controlled by the second gas sensor 6 to discharge the refrigerant.
  • the air conditioner 100 also includes an internal battery 9 that supplies power to the first refrigerant outlet 7 and the second refrigerant outlet 8.
  • the indoor unit 1 and the first pipe 4a are connected to each other by a pipe connecting portion 10 that is a union joint.
  • the indoor unit 1 and the 2nd piping 4b are mutually connected by the piping connection part 11 which is a union joint.
  • the outdoor unit 2 and the first pipe 4a are connected to each other by a pipe connecting portion 12 that is a union joint.
  • the outdoor unit 2 and the second pipe 4b are connected to each other by a pipe connecting portion 13 that is a union joint.
  • Each of the first gas sensor 5 and the second gas sensor 6 is composed of a thermistor that is a temperature-sensitive variable resistance element or a piezoelectric sensor that is a pressure-sensitive power generation element, and detects a flammable refrigerant gas having a certain concentration. A detection signal is output.
  • the first gas sensor 5 is disposed at a position where the refrigerant leaking from the joint portion of the pipe connection portion 10 can be detected.
  • the second gas sensor 6 is disposed at a position where the refrigerant leaking from the joint portion of the pipe connection portion 11 can be detected.
  • the first refrigerant discharge port 7 is disposed on a pipe path between the pipe connection part 12 and the pipe connection part 13.
  • the second refrigerant discharge port 8 is disposed on a pipe path between the pipe connection portion 13 and the compressor 3.
  • the first refrigerant discharge port 7 and the second refrigerant discharge port 8 are supplied with the power of the internal battery 9 or the commercial power supply to the solenoids provided respectively, so that the electromagnetic valves provided for the first gas sensor 5 and the second refrigerant discharge port 8 respectively.
  • the opening / closing operation is performed by the detection signal of the second gas sensor 6.
  • FIG. 2 is a flowchart for explaining the operation of the air conditioner according to Embodiment 1 of the present invention.
  • the detection signal output from the second gas sensor 6 is the second.
  • the refrigerant outlet 8 To the refrigerant outlet 8. Thereby, in the air conditioner 100, the normal operation mode is canceled and the refrigerant is discharged from the second refrigerant discharge port 8 (S4).
  • the processes after S1 are repeatedly executed.
  • the refrigerant is detected by the first gas sensor 5
  • the refrigerant is discharged from the first refrigerant discharge port 7 close to the first gas sensor 5
  • the second When the refrigerant is detected by the gas sensor 6, the refrigerant is discharged from the second refrigerant discharge port 8 close to the second gas sensor 6.
  • the air conditioner 100 when the refrigerant leaks in the vicinity of the gas sensor during operation, the gas sensor detects the refrigerant, cancels the normal operation mode, and removes the refrigerant remaining in the indoor unit 1 in the pipe.
  • the compressor 3 is rotated using the pressure of the refrigerant, and the refrigerant can be discharged to the outside from the refrigerant discharge port on the side close to the refrigerant leakage point.
  • the gas sensor detects the refrigerant, an alarm sound from an alarm device represented by a buzzer sounds.
  • the refrigerant is supplied from the first refrigerant discharge port 7 and the second refrigerant discharge port 8 by the power supplied from the internal battery 9. Can be discharged.
  • the air conditioner 100 is provided with two gas sensors and two refrigerant discharge ports, so that when the refrigerant leaks in the vicinity of the first gas sensor 5, the compressor 3 is used by utilizing the pressure in the pipe.
  • the refrigerant remaining in the indoor unit 1 is discharged from the first refrigerant discharge port 7 which is the shortest route for refrigerant discharge.
  • the compressor 3 is turned using the pressure in the pipe, and the refrigerant remains in the indoor unit 1 from the second refrigerant discharge port 8 which is the shortest route for refrigerant discharge.
  • the refrigerant is discharged outside the room.
  • FIG. FIG. 3 is a configuration diagram of an air conditioner according to Embodiment 2 of the present invention.
  • the air conditioner 100-2 according to Embodiment 2 includes a remote controller 14 connected to the indoor unit 1 in addition to the configuration of the air conditioner 100 according to Embodiment 1.
  • the remote controller 14 outputs a discharge command for forcibly discharging the refrigerant at an arbitrary timing by a human operation. Specifically, this discharge command forcibly outputs a detection signal from the first gas sensor 5 or the second gas sensor 6 in order to discharge the refrigerant from the first refrigerant discharge port 7 or the second refrigerant discharge port 8. This is a command for output.
  • FIG. 4 is a flowchart for explaining the operation of the air conditioner according to Embodiment 2 of the present invention.
  • the first gas sensor 5 and the second gas sensor 6 determine whether or not a discharge command is output from the remote controller 14, and if the discharge command is not output from the remote controller 14 (S10, No), the process of S10 Repeatedly.
  • a discharge command is output from the remote controller 14 (S10, Yes)
  • the first gas sensor 5 and the second gas sensor 6 that have received the discharge command force the detection signal from the first gas sensor 5 in S11. It is determined whether it is the first discharge command to be output automatically or the second discharge command to forcibly output the detection signal from the second gas sensor 6.
  • the detection signal forcibly output from the first gas sensor 5 is transmitted to the first refrigerant discharge port 7. Thereby, a refrigerant
  • coolant is discharged
  • the detection signal forcibly output from the second gas sensor 6 is transmitted to the second refrigerant discharge port 8. Thereby, a refrigerant
  • coolant is discharged
  • the refrigerant discharge port for automatically discharging the refrigerant can be selected by the remote controller 14, and therefore the refrigerant is forcibly detected before the gas sensor detects the refrigerant leakage. It can be discharged. Therefore, in addition to the effects of the first embodiment, damage due to refrigerant leakage can be further suppressed.
  • the configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

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

Abstract

An air conditioner 100 is provided with: a first pipe 4a and a second pipe 4b, which connect an indoor unit 1 and an indoor unit 2 to each other; a first gas sensor 5 that is provided close to the first pipe 4a; a second gas sensor 6 that is provided close to the second pipe 4b; a first refrigerant outlet 7 for discharging a refrigerant by being controlled by the first gas sensor 5; and a second refrigerant outlet 8 for discharging the refrigerant by being controlled by the second gas sensor 6. When the refrigerant is detected by the first gas sensor 5, the refrigerant is discharged from the first refrigerant outlet 7, and when the refrigerant is detected by the second gas sensor 6, the refrigerant is discharged from the second refrigerant outlet 8.

Description

空気調和機Air conditioner
　本発明は、円滑に冷媒漏れの対処を行うことができる空気調和機に関する。 The present invention relates to an air conditioner capable of smoothly dealing with refrigerant leakage.
　空気調和機で用いられるフロン系冷媒は、物性が安定し、取扱が容易な半面、オゾン層を破壊すると言われ、地球環境に悪影響を与えるところから、将来的には全面使用禁止となる。フロン系冷媒の代替えとして利用される炭化水素系冷媒は可燃性であるため、爆発および発火を未然に防止する必要がある。 Fluorocarbon refrigerants used in air conditioners have stable physical properties and are easy to handle. On the other hand, they are said to destroy the ozone layer. Since hydrocarbon-based refrigerants used as an alternative to fluorocarbon refrigerants are flammable, it is necessary to prevent explosions and ignition.
　従来の空気調和機には、可燃性の炭化水素系冷媒が室内で漏れたときに異常を報知する手段が設けられていないため、ユーザが冷媒漏れに気付いた時点で空気調和機の運転を止め、または部屋の窓を開けて換気をするといった対応が必要であった。下記特許文献１に示される空気調和機は、室内で冷媒漏れが発生すると、冷媒ガスを検出するガスセンサで冷媒を検知し、室外機に設けられた排出電動弁から室外に冷媒を放出するように構成されている。 Since conventional air conditioners are not provided with means for notifying abnormality when flammable hydrocarbon refrigerant leaks indoors, the operation of the air conditioner is stopped when the user notices refrigerant leakage. Also, it was necessary to take measures such as opening the window of the room and ventilating. In the air conditioner shown in Patent Document 1 below, when refrigerant leakage occurs in the room, the refrigerant is detected by a gas sensor that detects refrigerant gas, and the refrigerant is discharged to the outside from an electric discharge valve provided in the outdoor unit. It is configured.
特開平１１－３０４２２６号公報Japanese Patent Laid-Open No. 11-304226
　しかしながら特許文献１に示す従来の空気調和機では、冷媒排出口が１つ設けられているため、ガスセンサ付近で冷媒が漏れたとき、配管内の圧力を利用して圧縮機を回すことにより、室外機に設けられた冷媒排出口から冷媒が室外に排出されると、圧縮機内に残留する全ての冷媒が放出されてしまうため大量の冷媒を失ってしまう。そのため冷媒の再補充に要する時間が長時間に及び、冷媒漏れ時の対応が遅れるという課題があった。 However, in the conventional air conditioner shown in Patent Document 1, since one refrigerant discharge port is provided, when the refrigerant leaks in the vicinity of the gas sensor, the compressor is turned using the pressure in the pipe to When the refrigerant is discharged from the refrigerant discharge port provided in the machine, all the refrigerant remaining in the compressor is released, so that a large amount of refrigerant is lost. For this reason, there is a problem that the time required for refilling the refrigerant is long and the response at the time of refrigerant leakage is delayed.
　本発明は、上記に鑑みてなされたものであって冷媒漏れ時の対応を迅速に行うことができる空気調和機を得ることを目的とする。 The present invention has been made in view of the above, and an object of the present invention is to obtain an air conditioner that can quickly cope with a refrigerant leak.
　上述した課題を解決し、目的を達成するために、本発明に係る空気調和機は、室内機と室外機と前記室外機に設けられた圧縮機とを備えた空気調和機であって、前記室内機および前記室内機のそれぞれを繋ぎ冷媒が流れる２つの配管と、前記室内機に設けられ、前記２つの配管の内の一方である第１の配管の近くに設けられた第１のガスセンサと、前記室内機に設けられ、前記２つの配管の内の他方である第２の配管の近くに設けられた第２のガスセンサと、前記室外機に設けられ、前記第１の配管と前記圧縮機との間に設けられ、前記第１のガスセンサにより制御されて前記冷媒を排出する第１の冷媒排出口と、前記室外機に設けられ、前記第２の配管と前記圧縮機との間に設けられ、前記第２のガスセンサにより制御されて前記冷媒を排出する第２の冷媒排出口とを備え、前記第１のガスセンサで前記冷媒が検出されたとき、前記第１の冷媒排出口から前記冷媒が排出され、前記第２のガスセンサで前記冷媒が検出されたとき、前記第２の冷媒排出口から前記冷媒が排出されることを特徴とする。 In order to solve the above-described problems and achieve the object, an air conditioner according to the present invention is an air conditioner including an indoor unit, an outdoor unit, and a compressor provided in the outdoor unit, Two pipes that connect each of the indoor unit and the indoor unit, and a refrigerant flows; and a first gas sensor that is provided in the indoor unit and that is provided near a first pipe that is one of the two pipes; A second gas sensor provided in the indoor unit and provided near a second pipe which is the other of the two pipes; and the first pipe and the compressor provided in the outdoor unit. Provided in the outdoor unit, and provided between the second pipe and the compressor. The first refrigerant discharge port that is controlled by the first gas sensor and discharges the refrigerant is provided between the second pipe and the compressor. And the refrigerant is controlled by the second gas sensor. A second refrigerant discharge port that exits, and when the refrigerant is detected by the first gas sensor, the refrigerant is discharged from the first refrigerant discharge port, and the refrigerant is detected by the second gas sensor. When this is done, the refrigerant is discharged from the second refrigerant discharge port.
　本発明に係る空気調和機は、冷媒漏れ時の対応を迅速に行うことができるという効果を奏する。 The air conditioner according to the present invention has an effect of being able to quickly cope with a refrigerant leak.
本発明の実施の形態１に係る空気調和機の構成図The block diagram of the air conditioner which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る空気調和機による動作を説明するためのフローチャートThe flowchart for demonstrating operation | movement by the air conditioner which concerns on Embodiment 1 of this invention. 本発明の実施の形態２に係る空気調和機の構成図The block diagram of the air conditioner which concerns on Embodiment 2 of this invention. 本発明の実施の形態２に係る空気調和機による動作を説明するためのフローチャートThe flowchart for demonstrating the operation | movement by the air conditioner which concerns on Embodiment 2 of this invention.
　以下に、本発明の実施の形態に係る空気調和機を図面に基づいて詳細に説明する。なお、この実施の形態によりこの発明が限定されるものではない。 Hereinafter, an air conditioner according to an embodiment of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.
実施の形態１．
　図１は本発明の実施の形態１に係る空気調和機の構成図である。実施の形態１に係る空気調和機１００は、室内機１と室外機２と室外機２に設けられた圧縮機３とを備える。 Embodiment 1 FIG.
FIG. 1 is a configuration diagram of an air conditioner according to Embodiment 1 of the present invention. The air conditioner 100 according to Embodiment 1 includes an indoor unit 1, an outdoor unit 2, and a compressor 3 provided in the outdoor unit 2.
　また空気調和機１００は、室内機１および室内機１のそれぞれを繋ぎ冷媒が流れる一方の配管である第１の配管４ａと、室内機１および室内機１のそれぞれを繋ぎ冷媒が流れる他方の配管である第２の配管４ｂと、室内機１に設けられ、第１の配管４ａの近くに設けられた第１のガスセンサ５と、室内機１に設けられ、第２の配管４ｂの近くに設けられた第２のガスセンサ６とを備える。 In addition, the air conditioner 100 connects the indoor unit 1 and the indoor unit 1 to each other, and the first pipe 4a that is one pipe through which the refrigerant flows, and the other pipe through which the refrigerant flows through the indoor unit 1 and the indoor unit 1 are connected. The second pipe 4b and the first gas sensor 5 provided in the indoor unit 1 near the first pipe 4a, and provided in the indoor unit 1 near the second pipe 4b. The second gas sensor 6 is provided.
　また空気調和機１００は、第１の冷媒排出口７および第２の冷媒排出口８を備える。第１の冷媒排出口７は、室外機２に設けられ、第１の配管４ａと圧縮機３との間に設けられ、第１のガスセンサ５により制御されて冷媒を排出する。第２の冷媒排出口８は、室外機２に設けられ、第２の配管４ｂと圧縮機３との間に設けられ、第２のガスセンサ６により制御されて冷媒を排出する。また空気調和機１００は第１の冷媒排出口７および第２の冷媒排出口８へ電力を供給する内部バッテリー９を備える。 The air conditioner 100 also includes a first refrigerant discharge port 7 and a second refrigerant discharge port 8. The first refrigerant discharge port 7 is provided in the outdoor unit 2, is provided between the first pipe 4 a and the compressor 3, and is controlled by the first gas sensor 5 to discharge the refrigerant. The second refrigerant discharge port 8 is provided in the outdoor unit 2, is provided between the second pipe 4b and the compressor 3, and is controlled by the second gas sensor 6 to discharge the refrigerant. The air conditioner 100 also includes an internal battery 9 that supplies power to the first refrigerant outlet 7 and the second refrigerant outlet 8.
　室内機１と第１の配管４ａはユニオン継手である配管接続部１０で相互に接続される。同様に、室内機１と第２の配管４ｂはユニオン継手である配管接続部１１で相互に接続される。室外機２と第１の配管４ａはユニオン継手である配管接続部１２で相互に接続される。室外機２と第２の配管４ｂはユニオン継手である配管接続部１３で相互に接続される。 The indoor unit 1 and the first pipe 4a are connected to each other by a pipe connecting portion 10 that is a union joint. Similarly, the indoor unit 1 and the 2nd piping 4b are mutually connected by the piping connection part 11 which is a union joint. The outdoor unit 2 and the first pipe 4a are connected to each other by a pipe connecting portion 12 that is a union joint. The outdoor unit 2 and the second pipe 4b are connected to each other by a pipe connecting portion 13 that is a union joint.
　第１のガスセンサ５および第２のガスセンサ６は、それぞれが感温可変抵抗素子であるサーミスタ、または感圧発電素子である圧電センサで構成され、一定濃度の可燃性の冷媒ガスを検出したときに検出信号を出力するものである。第１のガスセンサ５は、配管接続部１０の継手部分から漏れ出る冷媒を検出可能な位置に配置される。第２のガスセンサ６は配管接続部１１の継手部分から漏れ出る冷媒を検出可能な位置に配置される。このように第１のガスセンサ５および第２のガスセンサ６を配置することにより、室内機１側から漏洩する可能性が高い箇所である配管接続部１０および配管接続部１１付近の冷媒ガスを早期に検出することができる。 Each of the first gas sensor 5 and the second gas sensor 6 is composed of a thermistor that is a temperature-sensitive variable resistance element or a piezoelectric sensor that is a pressure-sensitive power generation element, and detects a flammable refrigerant gas having a certain concentration. A detection signal is output. The first gas sensor 5 is disposed at a position where the refrigerant leaking from the joint portion of the pipe connection portion 10 can be detected. The second gas sensor 6 is disposed at a position where the refrigerant leaking from the joint portion of the pipe connection portion 11 can be detected. By disposing the first gas sensor 5 and the second gas sensor 6 in this way, the refrigerant gas in the vicinity of the pipe connection part 10 and the pipe connection part 11 that is highly likely to leak from the indoor unit 1 side is quickly removed. Can be detected.
　第１の冷媒排出口７は、配管接続部１２と配管接続部１３との間の配管経路上に配置される。また第２の冷媒排出口８は、配管接続部１３と圧縮機３との間の配管経路上に配置される。 The first refrigerant discharge port 7 is disposed on a pipe path between the pipe connection part 12 and the pipe connection part 13. In addition, the second refrigerant discharge port 8 is disposed on a pipe path between the pipe connection portion 13 and the compressor 3.
　なお第１の冷媒排出口７および第２の冷媒排出口８は、それぞれが備えるソレノイドに内部バッテリー９または商用電源の電力が供給されることにより、それぞれが備える電磁弁が第１のガスセンサ５および第２のガスセンサ６の検出信号により開閉動作するものである。 The first refrigerant discharge port 7 and the second refrigerant discharge port 8 are supplied with the power of the internal battery 9 or the commercial power supply to the solenoids provided respectively, so that the electromagnetic valves provided for the first gas sensor 5 and the second refrigerant discharge port 8 respectively. The opening / closing operation is performed by the detection signal of the second gas sensor 6.
　以下、図２を用いて空気調和機１００の動作を説明する。 Hereinafter, the operation of the air conditioner 100 will be described with reference to FIG.
　図２は本発明の実施の形態１に係る空気調和機による動作を説明するためのフローチャートである。第１のガスセンサ５が冷媒を検出した場合（Ｓ１，Ｙｅｓ）、第１のガスセンサ５から出力された検出信号が第１の冷媒排出口７に伝達される。これにより空気調和機１００では通常運転モードが解除されると共に、第１の冷媒排出口７から冷媒が排出される（Ｓ２）。 FIG. 2 is a flowchart for explaining the operation of the air conditioner according to Embodiment 1 of the present invention. When the first gas sensor 5 detects the refrigerant (S1, Yes), the detection signal output from the first gas sensor 5 is transmitted to the first refrigerant discharge port 7. Thereby, in the air conditioner 100, the normal operation mode is canceled and the refrigerant is discharged from the first refrigerant discharge port 7 (S2).
　第１のガスセンサ５が冷媒を検出せず（Ｓ１，Ｎｏ）、かつ、第２のガスセンサ６が冷媒を検出した場合（Ｓ３，Ｙｅｓ）、第２のガスセンサ６から出力された検出信号が第２の冷媒排出口８に伝達される。これにより空気調和機１００では通常運転モードが解除されると共に、第２の冷媒排出口８から冷媒が排出される（Ｓ４）。 When the first gas sensor 5 does not detect the refrigerant (S1, No) and the second gas sensor 6 detects the refrigerant (S3, Yes), the detection signal output from the second gas sensor 6 is the second. To the refrigerant outlet 8. Thereby, in the air conditioner 100, the normal operation mode is canceled and the refrigerant is discharged from the second refrigerant discharge port 8 (S4).
　第１のガスセンサ５が冷媒を検出せず（Ｓ１，Ｎｏ）、かつ、第２のガスセンサ６が冷媒を検出しなかった場合（Ｓ３，Ｎｏ）、Ｓ１以降の処理が繰り返し実行される。このように本実施の形態に係る空気調和機１００では、第１のガスセンサ５で冷媒が検出された場合、第１のガスセンサ５に近い第１の冷媒排出口７から冷媒が排出され、第２のガスセンサ６で冷媒が検出された場合、第２のガスセンサ６に近い第２の冷媒排出口８から冷媒が排出される点に特徴がある。 When the first gas sensor 5 does not detect the refrigerant (S1, No) and the second gas sensor 6 does not detect the refrigerant (S3, No), the processes after S1 are repeatedly executed. As described above, in the air conditioner 100 according to the present embodiment, when the refrigerant is detected by the first gas sensor 5, the refrigerant is discharged from the first refrigerant discharge port 7 close to the first gas sensor 5, and the second When the refrigerant is detected by the gas sensor 6, the refrigerant is discharged from the second refrigerant discharge port 8 close to the second gas sensor 6.
　もしビルの６階に人がいるときにこの階に設置された空気調和機１００が運転中に冷媒が漏れた場合、従来品ならば、その場にいた人が気付いたときに窓を開けて換気をすれば、冷媒の濃度が低下するまでの間は室内に入れなくなる。本実施の形態に係る空気調和機１００によれば、運転時にガスセンサ付近で冷媒が漏れたとき、ガスセンサが冷媒を検出して通常運転モードを解除し、室内機１に残っている冷媒を配管内の圧力を利用して圧縮機３を回して、冷媒漏れ箇所に近い側の冷媒排出口から冷媒を室外に排出することができる。なおガスセンサが冷媒検出時にはブザーを代表とする警報器による警報音が鳴る。 If there is a person on the 6th floor of the building and the refrigerant leaks during operation of the air conditioner 100 installed on this floor, if it is a conventional product, open the window when the person in the spot notices. If it is ventilated, it cannot enter the room until the refrigerant concentration decreases. According to the air conditioner 100 according to the present embodiment, when the refrigerant leaks in the vicinity of the gas sensor during operation, the gas sensor detects the refrigerant, cancels the normal operation mode, and removes the refrigerant remaining in the indoor unit 1 in the pipe. The compressor 3 is rotated using the pressure of the refrigerant, and the refrigerant can be discharged to the outside from the refrigerant discharge port on the side close to the refrigerant leakage point. When the gas sensor detects the refrigerant, an alarm sound from an alarm device represented by a buzzer sounds.
　さらに冷媒が漏れた直後に空気調和機１００へ電力を供給する商用電源が停電した場合でも内部バッテリー９から供給される電力により第１の冷媒排出口７および第２の冷媒排出口８から冷媒を排出することができる。 Further, even when a commercial power supply that supplies power to the air conditioner 100 immediately after the refrigerant leaks, the refrigerant is supplied from the first refrigerant discharge port 7 and the second refrigerant discharge port 8 by the power supplied from the internal battery 9. Can be discharged.
　これに対してガスセンサおよび冷媒排出口をそれぞれ１つ設けている場合、ガスセンサ付近で冷媒が漏れたとき、配管内の圧力を利用して圧縮機を回して、室外機に設けている冷媒排出口から冷媒を室外に排出してしまうと、圧縮機内に残っている冷媒も全て冷媒排出口から室外に放出してしまい、大量に冷媒を失ってしまう。 On the other hand, when one gas sensor and one refrigerant discharge port are provided, when the refrigerant leaks in the vicinity of the gas sensor, the compressor is turned using the pressure in the pipe, and the refrigerant discharge port provided in the outdoor unit If the refrigerant is discharged to the outside from the room, all the refrigerant remaining in the compressor is also discharged to the outside from the refrigerant outlet, and a large amount of the refrigerant is lost.
　本実施の形態に係る空気調和機１００は、ガスセンサと冷媒排出口をそれぞれ２つ設けることで、第１のガスセンサ５付近で冷媒が漏れたときには、配管内の圧力を利用して圧縮機３を回して、冷媒排出の最短ルートとなる第１の冷媒排出口７から、室内機１に残っている冷媒を室外に排出する。また第２のガスセンサ６付近で冷媒が漏れたときには、配管内の圧力を利用して圧縮機３を回して、冷媒排出の最短ルートとなる第２の冷媒排出口８から、室内機１に残っている冷媒を室外に排出する。このように冷媒を排出することにより、圧縮機３内に存在する冷媒は室外に排出されることがなく、室内機１に残っている冷媒だけを室外に排出することができ、全ての冷媒を失うことなく、冷媒漏れによる被害を最小限に抑えることができる。 The air conditioner 100 according to the present embodiment is provided with two gas sensors and two refrigerant discharge ports, so that when the refrigerant leaks in the vicinity of the first gas sensor 5, the compressor 3 is used by utilizing the pressure in the pipe. The refrigerant remaining in the indoor unit 1 is discharged from the first refrigerant discharge port 7 which is the shortest route for refrigerant discharge. When the refrigerant leaks in the vicinity of the second gas sensor 6, the compressor 3 is turned using the pressure in the pipe, and the refrigerant remains in the indoor unit 1 from the second refrigerant discharge port 8 which is the shortest route for refrigerant discharge. The refrigerant is discharged outside the room. By discharging the refrigerant in this way, the refrigerant existing in the compressor 3 is not discharged outside the room, and only the refrigerant remaining in the indoor unit 1 can be discharged outside the room, Without losing, damage caused by refrigerant leakage can be minimized.
実施の形態２．
　図３は本発明の実施の形態２に係る空気調和機の構成図である。実施の形態２に係る空気調和機１００－２は、実施の形態１に係る空気調和機１００の構成に加えて、室内機１に接続されるリモコン１４を備える。リモコン１４は、人の操作により、任意のタイミングで強制的に冷媒を排出させるための排出指令を出力する。具体的には、この排出指令は、第１の冷媒排出口７または第２の冷媒排出口８から冷媒を排出させるため、第１のガスセンサ５または第２のガスセンサ６から強制的に検出信号を出力させるための指令である。 Embodiment 2. FIG.
FIG. 3 is a configuration diagram of an air conditioner according to Embodiment 2 of the present invention. The air conditioner 100-2 according to Embodiment 2 includes a remote controller 14 connected to the indoor unit 1 in addition to the configuration of the air conditioner 100 according to Embodiment 1. The remote controller 14 outputs a discharge command for forcibly discharging the refrigerant at an arbitrary timing by a human operation. Specifically, this discharge command forcibly outputs a detection signal from the first gas sensor 5 or the second gas sensor 6 in order to discharge the refrigerant from the first refrigerant discharge port 7 or the second refrigerant discharge port 8. This is a command for output.
　図４は本発明の実施の形態２に係る空気調和機による動作を説明するためのフローチャートである。Ｓ１０において第１のガスセンサ５および第２のガスセンサ６は、リモコン１４から排出指令が出力されたか否かを判断し、リモコン１４から排出指令が出力されていない場合（Ｓ１０，Ｎｏ）、Ｓ１０の処理を繰り返し実行する。リモコン１４から排出指令が出力された場合（Ｓ１０，Ｙｅｓ）、排出指令を受信した第１のガスセンサ５および第２のガスセンサ６は、Ｓ１１において、排出指令が第１のガスセンサ５から検出信号を強制的に出力させる第１の排出指令であるか、第２のガスセンサ６から検出信号を強制的に出力させる第２の排出指令であるかを判定する。 FIG. 4 is a flowchart for explaining the operation of the air conditioner according to Embodiment 2 of the present invention. In S10, the first gas sensor 5 and the second gas sensor 6 determine whether or not a discharge command is output from the remote controller 14, and if the discharge command is not output from the remote controller 14 (S10, No), the process of S10 Repeatedly. When a discharge command is output from the remote controller 14 (S10, Yes), the first gas sensor 5 and the second gas sensor 6 that have received the discharge command force the detection signal from the first gas sensor 5 in S11. It is determined whether it is the first discharge command to be output automatically or the second discharge command to forcibly output the detection signal from the second gas sensor 6.
　排出指令が第１の排出指令である場合（Ｓ１１，Ｙｅｓ）、第１のガスセンサ５から強制的に出力された検出信号が第１の冷媒排出口７に伝達される。これにより第１の冷媒排出口７から冷媒が排出される（Ｓ１２）。 When the discharge command is the first discharge command (S11, Yes), the detection signal forcibly output from the first gas sensor 5 is transmitted to the first refrigerant discharge port 7. Thereby, a refrigerant | coolant is discharged | emitted from the 1st refrigerant | coolant discharge port 7 (S12).
　排出指令が第２の排出指令である場合（Ｓ１１，Ｎｏ）、第２のガスセンサ６から強制的に出力された検出信号が第２の冷媒排出口８に伝達される。これにより第２の冷媒排出口８から冷媒が排出される（Ｓ１３）。 When the discharge command is the second discharge command (S11, No), the detection signal forcibly output from the second gas sensor 6 is transmitted to the second refrigerant discharge port 8. Thereby, a refrigerant | coolant is discharged | emitted from the 2nd refrigerant | coolant discharge port 8 (S13).
　このように実施の形態２に係る空気調和機１００－２によれば、リモコン１４で自動的に冷媒を排出させる冷媒排出口を選択できるため、ガスセンサが冷媒漏れを検出する前に強制的に冷媒排出を行うことができる。そのため、実施の形態１の効果に加えて、冷媒漏れによる被害をより一層に抑えることができる。 As described above, according to the air conditioner 100-2 according to the second embodiment, the refrigerant discharge port for automatically discharging the refrigerant can be selected by the remote controller 14, and therefore the refrigerant is forcibly detected before the gas sensor detects the refrigerant leakage. It can be discharged. Therefore, in addition to the effects of the first embodiment, damage due to refrigerant leakage can be further suppressed.
　以上の実施の形態に示した構成は、本発明の内容の一例を示すものであり、別の公知の技術と組み合わせることも可能であるし、本発明の要旨を逸脱しない範囲で、構成の一部を省略、変更することも可能である。 The configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.
　１　室内機、２　室外機、３　圧縮機、４ａ　第１の配管、４ｂ　第２の配管、５　第１のガスセンサ、６　第２のガスセンサ、７　第１の冷媒排出口、８　第２の冷媒排出口、９　内部バッテリー、１０，１１，１２，１３　配管接続部、１４　リモコン、１００，１００－２　空気調和機。 1 indoor unit, 2 outdoor unit, 3 compressor, 4a first pipe, 4b second pipe, 5 first gas sensor, 6 second gas sensor, 7 first refrigerant outlet, 8 second refrigerant exhaust Outlet, 9 internal battery, 10, 11, 12, 13 piping connection, 14 remote control, 100, 100-2 air conditioner.

Claims (2)

  1. 　室内機と室外機と前記室外機に設けられた圧縮機とを備えた空気調和機であって、
    　前記室内機および前記室内機のそれぞれを繋ぎ冷媒が流れる２つの配管と、
    　前記室内機に設けられ、前記２つの配管の内の一方である第１の配管の近くに設けられた第１のガスセンサと、
    　前記室内機に設けられ、前記２つの配管の内の他方である第２の配管の近くに設けられた第２のガスセンサと、
    　前記室外機に設けられ、前記第１の配管と前記圧縮機との間に設けられ、前記第１のガスセンサにより制御されて前記冷媒を排出する第１の冷媒排出口と、
    　前記室外機に設けられ、前記第２の配管と前記圧縮機との間に設けられ、前記第２のガスセンサにより制御されて前記冷媒を排出する第２の冷媒排出口と
    　を備え、
    　前記第１のガスセンサで前記冷媒が検出されたとき、前記第１の冷媒排出口から前記冷媒が排出され、
    　前記第２のガスセンサで前記冷媒が検出されたとき、前記第２の冷媒排出口から前記冷媒が排出されることを特徴とする空気調和機。     An air conditioner comprising an indoor unit, an outdoor unit, and a compressor provided in the outdoor unit,
    Two pipes that connect the indoor unit and the indoor unit and through which refrigerant flows;
    A first gas sensor provided in the indoor unit and provided near a first pipe which is one of the two pipes;
    A second gas sensor provided in the indoor unit and provided near a second pipe which is the other of the two pipes;
    A first refrigerant discharge port provided in the outdoor unit, provided between the first pipe and the compressor, and controlled by the first gas sensor to discharge the refrigerant;
    A second refrigerant discharge port provided in the outdoor unit, provided between the second pipe and the compressor, and controlled by the second gas sensor to discharge the refrigerant;
    When the refrigerant is detected by the first gas sensor, the refrigerant is discharged from the first refrigerant discharge port,
    When the refrigerant is detected by the second gas sensor, the refrigerant is discharged from the second refrigerant discharge port.
  2. 　前記第１の冷媒排出口または前記第２の冷媒排出口から強制的に前記冷媒を排出するための排出指令を出力するリモコンを備え、
    　前記第１のガスセンサが前記排出指令を受信したとき、前記第１の冷媒排出口から前記冷媒が排出され、
    　前記第２のガスセンサが前記排出指令を受信したとき、前記第２の冷媒排出口から前記冷媒が排出されることを特徴とする請求項１に記載の空気調和機。     A remote controller that outputs a discharge command for forcibly discharging the refrigerant from the first refrigerant discharge port or the second refrigerant discharge port;
    When the first gas sensor receives the discharge command, the refrigerant is discharged from the first refrigerant discharge port,
    The air conditioner according to claim 1, wherein when the second gas sensor receives the discharge command, the refrigerant is discharged from the second refrigerant discharge port.
PCT/JP2016/064643 2016-05-17 2016-05-17 Air conditioner WO2017199345A1 (en)

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