JPWO2019224865A1 - Air conditioner and air conditioner packing set - Google Patents

Air conditioner and air conditioner packing set Download PDF

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JPWO2019224865A1
JPWO2019224865A1 JP2020520865A JP2020520865A JPWO2019224865A1 JP WO2019224865 A1 JPWO2019224865 A1 JP WO2019224865A1 JP 2020520865 A JP2020520865 A JP 2020520865A JP 2020520865 A JP2020520865 A JP 2020520865A JP WO2019224865 A1 JPWO2019224865 A1 JP WO2019224865A1
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refrigerant
air conditioner
heat exchanger
machine oil
refrigerating machine
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JP7009624B2 (en
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英明 前山
英明 前山
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Mitsubishi Electric Corp
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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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/68—Containers, packaging elements or packages, specially adapted for particular articles or materials for machines, engines or vehicles in assembled or dismantled form
    • 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
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • 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
    • 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
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/60—Odour
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
    • F25B2500/222—Detecting refrigerant leaks
    • 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
    • F25B49/005—Arrangement or mounting of control or safety devices of safety devices

Abstract

本発明の一局面に係る空気調和機（１００）においては、可燃性の冷媒が、圧縮機（３）、第１熱交換器（１）、膨張弁（５）、および第２熱交換器（６）の順に循環する。圧縮機（３）は、冷凍機油を貯留し、冷媒とともに冷凍機油を吐出する。冷凍機油は、冷媒とともに圧縮機（３）、第１熱交換器（１）、膨張弁（５）、および第２熱交換器（６）の順に循環する。第１熱交換器（１）は、第１空間に配置される。第２熱交換器（６）は、第２空間に配置される。空気調和機（１００）は、第１センサ（ｓ１）と、第２センサ（ｓ２）と、制御装置（８）とを備える。第１センサ（ｓ１）は、第１空間内の冷媒を検知する。第２センサ（ｓ２）は、第１空間内の冷凍機油の臭気を検知する。制御装置（８）は、第１センサ（ｓ１）からの第１検知信号および第２センサ（ｓ２）からの第２検知信号を用いて、冷媒の漏洩を検知する。In the air conditioner (100) according to one aspect of the present invention, the flammable refrigerant is a compressor (3), a first heat exchanger (1), an expansion valve (5), and a second heat exchanger ( It circulates in the order of 6). The compressor (3) stores the refrigerating machine oil and discharges the refrigerating machine oil together with the refrigerant. The refrigerating machine oil circulates together with the refrigerant in the order of the compressor (3), the first heat exchanger (1), the expansion valve (5), and the second heat exchanger (6). The first heat exchanger (1) is arranged in the first space. The second heat exchanger (6) is arranged in the second space. The air conditioner (100) includes a first sensor (s1), a second sensor (s2), and a control device (8). The first sensor (s1) detects the refrigerant in the first space. The second sensor (s2) detects the odor of the refrigerating machine oil in the first space. The control device (8) detects the leakage of the refrigerant by using the first detection signal from the first sensor (s1) and the second detection signal from the second sensor (s2).

Description

本発明は、可燃性の冷媒の漏洩検知機能を有する空気調和機および当該空気調和機の梱包セットに関する。 The present invention relates to an air conditioner having a function of detecting leakage of a flammable refrigerant and a packing set of the air conditioner.

従来、可燃性の冷媒の漏洩検知機能を有する空気調和機が知られている。たとえば国際公開第２０１７／１８７６１８号パンフレット（特許文献１）には、室内における可燃性の冷媒の濃度を検知する冷媒検知手段を備える空気調和機が開示されている。当該空気調和機においては、冷媒検知手段によって検知される冷媒濃度が閾値以上である場合に、室内送風ファンが予め設定された風量で運転される。その結果、冷媒が漏洩した場合に、室内に可燃濃度領域が形成されるのを抑制することができる。 Conventionally, an air conditioner having a function of detecting leakage of a flammable refrigerant has been known. For example, International Publication No. 2017/187618 (Patent Document 1) discloses an air conditioner including a refrigerant detecting means for detecting the concentration of a flammable refrigerant in a room. In the air conditioner, when the refrigerant concentration detected by the refrigerant detecting means is equal to or higher than the threshold value, the indoor blower fan is operated with a preset air volume. As a result, when the refrigerant leaks, it is possible to suppress the formation of a flammable concentration region in the room.

国際公開第２０１７／１８７６１８号パンフレットInternational Publication No. 2017/187618 Pamphlet

圧縮機に貯留されている冷凍機油は、通常、冷媒とともに圧縮機から吐出されて空気調和機を循環する。そのため、冷媒が漏洩している場合、冷凍機油も漏洩していることがほとんどある。しかし、特許文献１においては、冷媒とともに冷凍機油が漏洩することについては考慮されていない。 The refrigerating machine oil stored in the compressor is usually discharged from the compressor together with the refrigerant and circulates in the air conditioner. Therefore, when the refrigerant leaks, the refrigerating machine oil also leaks in most cases. However, Patent Document 1 does not consider the leakage of refrigerating machine oil together with the refrigerant.

本発明は、上述のような課題を解決するためになされたものであり、その目的は、空気調和機の安全性を向上させることである。 The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to improve the safety of an air conditioner.

本発明の一局面に係る空気調和機においては、可燃性の冷媒が、圧縮機、第１熱交換器、膨張弁、および第２熱交換器の順に循環する。圧縮機は、冷凍機油を貯留し、冷媒とともに冷凍機油を吐出する。冷凍機油は、冷媒とともに圧縮機、第１熱交換器、膨張弁、および第２熱交換器の順に循環する。第１熱交換器は、第１空間に配置される。第２熱交換器は、第２空間に配置される。空気調和機は、第１センサと、第２センサと、制御装置とを備える。第１センサは、第１空間内の冷媒を検知する。第２センサは、第１空間内の冷凍機油の臭気を検知する。制御装置は、第１センサからの第１検知信号および第２センサからの第２検知信号を用いて、冷媒の漏洩を検知する。 In the air conditioner according to one aspect of the present invention, the flammable refrigerant circulates in the order of the compressor, the first heat exchanger, the expansion valve, and the second heat exchanger. The compressor stores the refrigerating machine oil and discharges the refrigerating machine oil together with the refrigerant. The refrigerating machine oil circulates together with the refrigerant in the order of the compressor, the first heat exchanger, the expansion valve, and the second heat exchanger. The first heat exchanger is arranged in the first space. The second heat exchanger is arranged in the second space. The air conditioner includes a first sensor, a second sensor, and a control device. The first sensor detects the refrigerant in the first space. The second sensor detects the odor of the refrigerating machine oil in the first space. The control device detects the leakage of the refrigerant by using the first detection signal from the first sensor and the second detection signal from the second sensor.

本発明の他の局面に係る空気調和機においては、可燃性の冷媒が、圧縮機、第１熱交換器、膨張弁、および第２熱交換器の順に循環する。圧縮機は、冷凍機油を貯留し、冷媒とともに冷凍機油を吐出する。冷凍機油は、冷媒とともに圧縮機、第１熱交換器、膨張弁、および第２熱交換器の順に循環する。第１熱交換器は、第１空間に配置される。第２熱交換器は、第２空間に配置される。空気調和機は、センサと、サンプル収容部と、制御装置とを備える。センサは、第１空間内の冷媒を検知する。サンプル収容部は、冷凍機油のサンプルを収容し、外部に当該サンプルの臭気を放出可能である。制御装置は、センサからの検知信号を用いて、冷媒の漏洩を検知する。 In the air conditioner according to another aspect of the present invention, the flammable refrigerant circulates in the order of the compressor, the first heat exchanger, the expansion valve, and the second heat exchanger. The compressor stores the refrigerating machine oil and discharges the refrigerating machine oil together with the refrigerant. The refrigerating machine oil circulates together with the refrigerant in the order of the compressor, the first heat exchanger, the expansion valve, and the second heat exchanger. The first heat exchanger is arranged in the first space. The second heat exchanger is arranged in the second space. The air conditioner includes a sensor, a sample accommodating portion, and a control device. The sensor detects the refrigerant in the first space. The sample storage unit can store a sample of refrigerating machine oil and release the odor of the sample to the outside. The control device detects the leakage of the refrigerant by using the detection signal from the sensor.

本発明の他の局面に係る空気調和機の梱包セットは、可燃性の冷媒が、圧縮機、第１熱交換器、膨張弁、および第２熱交換器の順に循環する空気調和機の梱包セットである。空気調和機の稼働時において、圧縮機は、冷凍機油を貯留し、冷媒とともに冷凍機油を吐出する。冷凍機油は、冷媒とともに圧縮機、第１熱交換器、膨張弁、および第２熱交換器の順に循環する。第１熱交換器は、第１空間に配置される。第２熱交換器は、第２空間に配置される。空気調和機は、センサと、制御装置とを備える。センサは、第１空間内の冷媒を検知する。制御装置は、センサからの検知信号を用いて、冷媒の漏洩を検知する。梱包セットは、冷凍機油のサンプルと、梱包箱とを備える。梱包箱は、圧縮機、第１熱交換器、膨張弁、第２熱交換器、センサ、および制御装置の少なくとも１つおよびサンプルを収容する。 The air conditioner packing set according to another aspect of the present invention is an air conditioner packing set in which flammable refrigerant circulates in the order of a compressor, a first heat exchanger, an expansion valve, and a second heat exchanger. Is. When the air conditioner is in operation, the compressor stores the refrigerating machine oil and discharges the refrigerating machine oil together with the refrigerant. The refrigerating machine oil circulates together with the refrigerant in the order of the compressor, the first heat exchanger, the expansion valve, and the second heat exchanger. The first heat exchanger is arranged in the first space. The second heat exchanger is arranged in the second space. The air conditioner includes a sensor and a control device. The sensor detects the refrigerant in the first space. The control device detects the leakage of the refrigerant by using the detection signal from the sensor. The packing set includes a sample of refrigerating machine oil and a packing box. The packaging box houses at least one of a compressor, a first heat exchanger, an expansion valve, a second heat exchanger, a sensor, and a control device and a sample.

本発明に係る空気調和機および空気調和機の梱包セットによれば、冷凍機油の臭気によっても第１空間に漏洩した冷媒を検知可能であるため、第１空間内における冷媒漏洩の検知精度を高めることができる。その結果、空気調和機の安全を向上させることができる。 According to the air conditioner and the packing set of the air conditioner according to the present invention, the refrigerant leaked into the first space can be detected even by the odor of the refrigerating machine oil, so that the detection accuracy of the refrigerant leak in the first space is improved. be able to. As a result, the safety of the air conditioner can be improved.

実施の形態１に係る空気調和機の構成を示す機能ブロック図である。It is a functional block diagram which shows the structure of the air conditioner which concerns on Embodiment 1. FIG. 図１の空気調和機の室内機の概略的な外観図である。It is a schematic external view of the indoor unit of the air conditioner of FIG. 制御装置によって行なわれる冷媒漏洩検知処理の流れを示すフローチャートである。It is a flowchart which shows the flow of the refrigerant leakage detection processing performed by a control device. 制御装置によって行なわれる冷媒漏洩検知処理の流れの他の例を示すフローチャートである。It is a flowchart which shows another example of the flow of the refrigerant leakage detection processing performed by a control device. Ｘ軸を冷媒センサの検知レベルとし、Ｙ軸を臭気センサの検知レベルとし、冷媒センサの検知レベルと臭気センサの検知レベルとの関係を示す座標平面である。The X-axis is the detection level of the refrigerant sensor, the Y-axis is the detection level of the odor sensor, and it is a coordinate plane showing the relationship between the detection level of the refrigerant sensor and the detection level of the odor sensor. 冷媒漏洩領域に含まれているか否かによって冷媒漏洩を判定する処理の流れを示すフローチャートである。It is a flowchart which shows the flow of the process which determines the refrigerant leakage by whether or not it is included in the refrigerant leakage area. 実施の形態２に係る空気調和機の構成を示す機能ブロック図である。It is a functional block diagram which shows the structure of the air conditioner which concerns on Embodiment 2. FIG. 実施の形態３に係る空気調和機の構成を示す機能ブロック図である。It is a functional block diagram which shows the structure of the air conditioner which concerns on Embodiment 3. FIG. 図８の空気調和機の室内機の概略的な外観図である。It is a schematic external view of the indoor unit of the air conditioner of FIG. 図９のサンプル容器の概略的な外観図である。It is a schematic external view of the sample container of FIG. 実施の形態４に係る空気調和機の梱包セットによって、室内機が梱包されている様子を示す図である。It is a figure which shows the state that the indoor unit is packed by the packing set of the air conditioner which concerns on Embodiment 4. FIG. 図１１の梱包セットが開梱された様子を示す図である。It is a figure which shows the state that the packing set of FIG. 11 was unpacked.

以下、本発明の実施の形態について、図面を参照しながら詳細に説明する。なお、図中同一または相当部分には同一符号を付してその説明は原則として繰り返さない。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In principle, the same or corresponding parts in the drawings are designated by the same reference numerals and the description is not repeated.

実施の形態１．
図１は、実施の形態１に係る空気調和機１００の構成を示す機能ブロック図である。図２は、図１の空気調和機１００の室内機１０の概略的な外観図である。空気調和機１００においては、可燃性のＲ２９０（プロパン）を含む冷媒が使用される。空気調和機１００は、運転モードとして暖房モード、冷房モード、および除霜モードを含む。図１に示されるように、空気調和機１００は、室内機１０と、室外機１１とを備える。室内機１０および室外機１１は、いずれも主電源Ｐｓ１（第１電源）から電力が供給される。Embodiment 1.
FIG. 1 is a functional block diagram showing the configuration of the air conditioner 100 according to the first embodiment. FIG. 2 is a schematic external view of the indoor unit 10 of the air conditioner 100 of FIG. In the air conditioner 100, a refrigerant containing flammable R290 (propane) is used. The air conditioner 100 includes a heating mode, a cooling mode, and a defrosting mode as operating modes. As shown in FIG. 1, the air conditioner 100 includes an indoor unit 10 and an outdoor unit 11. Both the indoor unit 10 and the outdoor unit 11 are supplied with electric power from the main power source Ps1 (first power source).

室内機１０は、室内（第１空間）に配置されている。室内機１０は、室内熱交換器１（第１熱交換器）と、室内ファン２と、冷媒センサｓ１（第１センサ）と、臭気センサｓ２（第２センサ）とを含む。室外機１１は、室外（第２空間）に配置されている。室外機１１は、圧縮機３と、四方弁４と、膨張弁５と、室外熱交換器６（第２熱交換器）と、室外ファン７と、制御装置８とを含む。圧縮機３は、圧縮機構を潤滑するための冷凍機油を貯留している。当該冷凍機油は、独特の臭気を有する冷凍機油で、たとえばＰＡＧ（PolyAlkylene Glycol）油を含む。 The indoor unit 10 is arranged indoors (first space). The indoor unit 10 includes an indoor heat exchanger 1 (first heat exchanger), an indoor fan 2, a refrigerant sensor s1 (first sensor), and an odor sensor s2 (second sensor). The outdoor unit 11 is arranged outdoors (second space). The outdoor unit 11 includes a compressor 3, a four-way valve 4, an expansion valve 5, an outdoor heat exchanger 6 (second heat exchanger), an outdoor fan 7, and a control device 8. The compressor 3 stores refrigerating machine oil for lubricating the compression mechanism. The refrigerating machine oil is a refrigerating machine oil having a peculiar odor, and includes, for example, PAG (PolyAlkylene Glycol) oil.

暖房モードにおいては、冷媒が圧縮機３、室内熱交換器１、膨張弁５、および室外熱交換器６の順に循環するように、制御装置８は四方弁４を制御して流路を形成する。暖房モードにおいて室内熱交換器１は凝縮器として機能し、室外熱交換器６は蒸発器として機能する。 In the heating mode, the control device 8 controls the four-way valve 4 to form a flow path so that the refrigerant circulates in the order of the compressor 3, the indoor heat exchanger 1, the expansion valve 5, and the outdoor heat exchanger 6. .. In the heating mode, the indoor heat exchanger 1 functions as a condenser and the outdoor heat exchanger 6 functions as an evaporator.

冷房モードおよび除霜モードにおいては、冷媒が圧縮機３、室外熱交換器６、膨張弁５、および室内熱交換器１の順に循環するように、制御装置８は四方弁４を制御して流路を形成する。冷房モードおよび除霜モードにおいては、室内熱交換器１は蒸発器として機能し、室外熱交換器６は凝縮器として機能する。 In the cooling mode and the defrosting mode, the control device 8 controls the four-way valve 4 so that the refrigerant circulates in the order of the compressor 3, the outdoor heat exchanger 6, the expansion valve 5, and the indoor heat exchanger 1. Form a road. In the cooling mode and the defrosting mode, the indoor heat exchanger 1 functions as an evaporator and the outdoor heat exchanger 6 functions as a condenser.

制御装置８は、圧縮機３の駆動周波数を制御することにより、圧縮機３が単位時間あたりに吐出する冷媒量を制御する。制御装置８は、膨張弁５の開度を調節する。制御装置８は、室内ファン２，室外ファン７の各単位時間当たりの送風量を制御する。 The control device 8 controls the drive frequency of the compressor 3 to control the amount of refrigerant discharged by the compressor 3 per unit time. The control device 8 adjusts the opening degree of the expansion valve 5. The control device 8 controls the amount of air blown per unit time of the indoor fan 2 and the outdoor fan 7.

室内機１０において冷媒センサｓ１および臭気センサｓ２は、室内ファン２による送風方向に関して、室内熱交換器１よりも風下に配置されている。冷媒センサｓ１は、冷媒濃度を表す検知信号（第１検知信号）を制御装置８に出力する。臭気センサｓ２は、冷凍機油の臭気を表す検知信号（第２検知信号）を制御装置８に出力する。 In the indoor unit 10, the refrigerant sensor s1 and the odor sensor s2 are arranged leeward of the indoor heat exchanger 1 in the direction of air blown by the indoor fan 2. The refrigerant sensor s1 outputs a detection signal (first detection signal) indicating the refrigerant concentration to the control device 8. The odor sensor s2 outputs a detection signal (second detection signal) indicating the odor of the refrigerating machine oil to the control device 8.

圧縮機３に貯留されている冷凍機油は、通常、冷媒とともに圧縮機３から吐出されて空気調和機１００を循環する。そのため、冷媒が漏洩している場合、冷凍機油も漏洩していることがほとんどある。 The refrigerating machine oil stored in the compressor 3 is usually discharged from the compressor 3 together with the refrigerant and circulates in the air conditioner 100. Therefore, when the refrigerant leaks, the refrigerating machine oil also leaks in most cases.

そこで、実施の形態１においては、室内における冷媒漏洩を、冷媒濃度および冷凍機油の臭気を用いて検知する。冷媒濃度に加えて冷凍機油の臭気を用いることにより、冷媒濃度のみを用いて冷媒漏洩を検知する場合よりも冷媒漏洩の検知精度を高めることができるため、空気調和機の安全性を向上させることができる。 Therefore, in the first embodiment, the refrigerant leakage in the room is detected by using the refrigerant concentration and the odor of the refrigerating machine oil. By using the odor of refrigerating machine oil in addition to the refrigerant concentration, it is possible to improve the detection accuracy of the refrigerant leak compared to the case where the refrigerant leak is detected using only the refrigerant concentration, so that the safety of the air conditioner should be improved. Can be done.

図３は、制御装置８によって行なわれる冷媒漏洩検知処理の流れを示すフローチャートである。図３に示される処理は、空気調和機１００の運転を制御する不図示のメインルーチンによって定期的あるいは不定期に呼び出される。以下ではステップをＳとも記載する。また、検知レベルＬ１は冷媒センサｓ１の検知信号のレベルを表し、検知レベルＬ２は臭気センサｓ２の検知信号のレベルを表す。 FIG. 3 is a flowchart showing the flow of the refrigerant leakage detection process performed by the control device 8. The process shown in FIG. 3 is called periodically or irregularly by a main routine (not shown) that controls the operation of the air conditioner 100. In the following, the step is also referred to as S. Further, the detection level L1 represents the level of the detection signal of the refrigerant sensor s1, and the detection level L2 represents the level of the detection signal of the odor sensor s2.

図３に示されるように、制御装置８は、Ｓ１１において室内の冷媒濃度の検知レベルＬ１が閾値Ａ１（第１閾値）より大きいか否かを判定する。検知レベルＬ１が閾値Ａ１より大きい場合（Ｓ１１においてＹＥＳ）、制御装置８は、Ｓ１４において安全確保処理を行なった後、処理をメインルーチンに返す。安全確保処理においては、たとえば、室内ファン２によって室内の空気を攪拌して室内の冷媒分布を均一化して冷媒濃度を薄める処理、アラーム音の発生、ランプの点滅、およびメッセージの表示が行なわれる。 As shown in FIG. 3, the control device 8 determines in S11 whether or not the detection level L1 of the refrigerant concentration in the room is larger than the threshold value A1 (first threshold value). When the detection level L1 is larger than the threshold value A1 (YES in S11), the control device 8 returns the process to the main routine after performing the safety ensuring process in S14. In the safety assurance process, for example, the indoor fan 2 agitates the air in the room to equalize the distribution of the refrigerant in the room and dilute the refrigerant concentration, generate an alarm sound, blink the lamp, and display a message.

室内の冷媒濃度の検知レベルＬ１が閾値Ａ１以下である場合（Ｓ１１においてＮＯ）、制御装置８は、Ｓ１２において、室内の冷凍機油の検知レベルＬ２が閾値Ｂ１（第２閾値）より大きいか否かを判定する。室内の冷凍機油の検知レベルＬ２が閾値Ｂ１より大きい場合（Ｓ１２においてＹＥＳ）、制御装置８は、Ｓ１４において安全確保処理を行なった後、処理をメインルーチンに返す。室内の冷凍機油の検知レベルＬ２が閾値Ｂ１以下である場合（Ｓ１２においてＮＯ）、制御装置８は、処理をメインルーチンに返す。 When the detection level L1 of the refrigerant concentration in the room is equal to or less than the threshold value A1 (NO in S11), the control device 8 determines whether or not the detection level L2 of the refrigerating machine oil in the room is larger than the threshold value B1 (second threshold value) in S12. To judge. When the detection level L2 of the refrigerating machine oil in the room is larger than the threshold value B1 (YES in S12), the control device 8 returns the processing to the main routine after performing the safety ensuring processing in S14. When the detection level L2 of the refrigerating machine oil in the room is equal to or less than the threshold value B1 (NO in S12), the control device 8 returns the process to the main routine.

図３においては、冷媒濃度を用いた冷媒漏洩判定（Ｓ１１）と冷凍機油の臭気を用いた冷媒漏洩判定（Ｓ１２）とを互いに異なるステップで行なう。冷媒濃度および冷凍機油の臭気の双方を同じステップで用いて冷媒漏洩判定を行なってもよく、たとえば、図３に示される処理に替えて、図４に示される処理が行なわれても良い。図４においては、冷媒濃度を用いた冷媒漏洩判定において検知レベルＬ１が閾値Ａ１以下（Ｓ１１においてＮＯ）であり、かつ、冷凍機油の臭気を用いた冷媒漏洩判において検知レベルＬ２が閾値Ｂ１以下（Ｓ１２においてＮＯ）である場合に、冷媒濃度および冷凍機油の臭気を一緒に用いる冷媒漏洩判定（Ｓ１３）が行なわれる。 In FIG. 3, the refrigerant leakage determination (S11) using the refrigerant concentration and the refrigerant leakage determination (S12) using the odor of the refrigerating machine oil are performed in different steps. Both the refrigerant concentration and the odor of the refrigerating machine oil may be used in the same step to determine the refrigerant leakage. For example, the treatment shown in FIG. 4 may be performed instead of the treatment shown in FIG. In FIG. 4, the detection level L1 is the threshold value A1 or less (NO in S11) in the refrigerant leakage determination using the refrigerant concentration, and the detection level L2 is the threshold value B1 or less in the refrigerant leakage determination using the odor of the refrigerating machine oil (NO). When NO) in S12, the refrigerant leakage determination (S13) using the refrigerant concentration and the odor of the refrigerating machine oil together is performed.

Ｓ１３が行なわれる時点では、検知レベルＬ１が閾値Ａ１以下であり、かつ検知レベルＬ２が閾値Ｂ１以下であるため、Ｓ１３においては、検知レベルＬ１が閾値Ａ１以下であり、かつ検知レベルＬ２が閾値Ｂ１以下である範囲において冷媒漏洩と判定すべき条件を設定する必要がある。そのため、図４において、閾値Ａ２（第３閾値）は閾値Ａ１より小さく、閾値Ｂ２（第４閾値）は閾値Ｂ１より小さい。 At the time when S13 is performed, the detection level L1 is equal to or less than the threshold value A1 and the detection level L2 is equal to or less than the threshold value B1. Therefore, in S13, the detection level L1 is equal to or less than the threshold value A1 and the detection level L2 is equal to or less than the threshold value B1. It is necessary to set the conditions to be judged as refrigerant leakage within the following range. Therefore, in FIG. 4, the threshold value A2 (third threshold value) is smaller than the threshold value A1, and the threshold value B2 (fourth threshold value) is smaller than the threshold value B1.

図４に示されるように、Ｓ１１，Ｓ１２の条件がいずれも成立しない場合（Ｓ１１においてＮＯ、かつＳ１２においてＮＯ）、制御装置８は、Ｓ１３において、検知レベルＬ１が閾値Ａ２よりも大きく、かつ検知レベルＬ２が閾値Ｂ２より大きいか否かを判定する。検知レベルＬ１が閾値Ａ２よりも大きく、かつ検知レベルＬ２が閾値Ｂ２より大きい場合（Ｓ１３においてＹＥＳ）、制御装置８は、Ｓ１４において安全確保処理を行なって処理をメインルーチンに戻す。検知レベルＬ１が閾値Ａ２以下であるか、または検知レベルＬ２が閾値Ｂ２以下である場合（Ｓ１３においてＮＯ）、制御装置８は、処理をメインルーチンに戻す。 As shown in FIG. 4, when neither of the conditions of S11 and S12 is satisfied (NO in S11 and NO in S12), the control device 8 detects that the detection level L1 is larger than the threshold value A2 in S13. It is determined whether or not the level L2 is larger than the threshold value B2. When the detection level L1 is larger than the threshold value A2 and the detection level L2 is larger than the threshold value B2 (YES in S13), the control device 8 performs the safety assurance process in S14 and returns the process to the main routine. When the detection level L1 is equal to or less than the threshold value A2, or the detection level L2 is equal to or less than the threshold value B2 (NO in S13), the control device 8 returns the process to the main routine.

図３，図４において、冷媒漏洩の判定条件は、冷媒濃度の検知レベルＬ１あるいは冷凍機油の検知レベルＬ２が閾値より大きいか否かという条件である。冷媒漏洩の判定条件は、検知レベルＬ１と検知レベルＬ２との関係を示す座標平面上で冷媒漏洩と判定すべき冷媒漏洩領域に、検知レベルＬ１および検知レベルＬ２によって特定される点が含まれるか否かによって判定してもよい。 In FIGS. 3 and 4, the condition for determining the refrigerant leakage is whether or not the detection level L1 of the refrigerant concentration or the detection level L2 of the refrigerating machine oil is larger than the threshold value. The condition for determining refrigerant leakage is whether the refrigerant leakage region to be determined as refrigerant leakage on the coordinate plane showing the relationship between the detection level L1 and the detection level L2 includes a point specified by the detection level L1 and the detection level L2. It may be judged by whether or not.

図５は、Ｘ軸を冷媒濃度の検知レベルＬ１とし、Ｙ軸を冷凍機油の検知レベルＬ２とする、検知レベルＬ１と検知レベルＬ２との関係を示す座標平面である。図５に示される冷媒漏洩領域は、以下の式（１）として表される。式（１）を満たす検知レベルＬ１および検知レベルＬ２は、冷媒漏洩領域に含まれる。なお、図４の検知レベルＬ１の閾値Ａ２および検知レベルＬ２の閾値Ｂ２は、たとえば冷媒漏洩領域と非冷媒漏洩領域（式（１）を満たさない領域）との境界線（点Ｐ１（Ａ１，０）および点Ｐ２（０，Ｂ１）を結ぶ直線）上の点Ｐ３の検知レベルＬ１および検知レベルＬ２にそれぞれ設定される。 FIG. 5 is a coordinate plane showing the relationship between the detection level L1 and the detection level L2, where the X-axis is the refrigerant concentration detection level L1 and the Y-axis is the refrigerating machine oil detection level L2. The refrigerant leakage region shown in FIG. 5 is represented by the following equation (1). The detection level L1 and the detection level L2 satisfying the formula (1) are included in the refrigerant leakage region. The threshold value A2 of the detection level L1 and the threshold value B2 of the detection level L2 in FIG. 4 are, for example, boundary lines between the refrigerant leakage region and the non-refrigerant leakage region (regions that do not satisfy the equation (1)) (points P1 (A1,0). ) And the straight line connecting the points P2 (0, B1)) are set to the detection level L1 and the detection level L2 of the point P3, respectively.

Figure 2019224865
Figure 2019224865

図６は、式（１）を用いて冷媒漏洩を判定する処理の流れを示すフローチャートである。図６に示されるフローチャートは、図３のＳ１１，Ｓ１２が、Ｓ１０に置き換えられたフローチャートである。図６に示されるように、制御装置８は、検知レベルＬ１および検知レベルＬ２が式（１）を満たすか否かを判定する。検知レベルＬ１および検知レベルＬ２が式（１）を満たす場合（Ｓ１０においてＹＥＳ）、制御装置８は、処理をＳ１４において安全確保処理を行なって処理をメインルーチンに返す。検知レベルＬ１および検知レベルＬ２が式（１）を満たさない場合（Ｓ１０においてＮＯ）、制御装置８は、処理をメインルーチンに返す。 FIG. 6 is a flowchart showing a flow of a process for determining a refrigerant leak using the equation (1). The flowchart shown in FIG. 6 is a flowchart in which S11 and S12 in FIG. 3 are replaced with S10. As shown in FIG. 6, the control device 8 determines whether or not the detection level L1 and the detection level L2 satisfy the equation (1). When the detection level L1 and the detection level L2 satisfy the equation (1) (YES in S10), the control device 8 performs the safety assurance process in S14 and returns the process to the main routine. When the detection level L1 and the detection level L2 do not satisfy the equation (1) (NO in S10), the control device 8 returns the process to the main routine.

以上、実施の形態１および変形例１，２に係る空気調和機によれば、空気調和機の安全性を向上させることができる。 As described above, according to the air conditioner according to the first embodiment and the first and second modifications, the safety of the air conditioner can be improved.

実施の形態２．
実施の形態１においては、冷媒センサおよび臭気センサが空気調和機の電源から電力を供給される場合について説明した。実施の形態２においては、冷媒センサおよび臭気センサの少なくとも一方が空気調和機の電源とは別の電源から電力を供給される場合について説明する。このような構成とすることにより、空気調和機に電力が供給されていない場合（空気調和装置と電源とが接続されていない場合、あるいは停電の場合）でも、冷媒センサあるいは臭気センサの少なくとも一方は動作しているため、冷媒漏洩を検知することができる。Embodiment 2.
In the first embodiment, the case where the refrigerant sensor and the odor sensor are supplied with electric power from the power source of the air conditioner has been described. In the second embodiment, a case where at least one of the refrigerant sensor and the odor sensor is supplied with electric power from a power source different from the power source of the air conditioner will be described. With such a configuration, even when power is not supplied to the air conditioner (when the air conditioner and the power supply are not connected or when there is a power failure), at least one of the refrigerant sensor and the odor sensor can be used. Since it is operating, it is possible to detect refrigerant leakage.

図７は、実施の形態２に係る空気調和機２００の構成を示す機能ブロック図である。空気調和機２００の構成は、図１の空気調和機１００の構成に補助電源Ｐｓ２（第２電源）が加えられるとともに、冷媒センサｓ１および臭気センサｓ２が冷媒センサｓ２１および臭気センサｓ２２にそれぞれ置き換えられた構成である。それ以外の構成は同様であるため、説明を繰り返さない。 FIG. 7 is a functional block diagram showing the configuration of the air conditioner 200 according to the second embodiment. In the configuration of the air conditioner 200, the auxiliary power supply Ps2 (second power source) is added to the configuration of the air conditioner 100 of FIG. 1, and the refrigerant sensor s1 and the odor sensor s2 are replaced with the refrigerant sensor s21 and the odor sensor s22, respectively. It is a configuration. Other configurations are the same, so the description will not be repeated.

図７に示されるように、補助電源Ｐｓ２は、臭気センサｓ２２に電力を供給する。補助電源Ｐｓ２は、たとえば電池を含む。臭気センサｓ２２は、検知レベルＬ２が閾値Ｂ１を超えた場合、たとえばアラーム音、ランプの点滅、あるいはメッセージの表示により冷媒漏洩を報知する。主電源Ｐｓ１からの電力供給が停止している場合（たとえば空気調和機２００のコンセントが主電源Ｐｓ１から抜かれている場合、あるいは停電の場合）に補助電源Ｐｓ２から電力が供給されるセンサは、冷媒センサｓ２１でもよい。この場合、冷媒センサｓ２１は、検知レベルＬ１が閾値Ａ１を超えた場合、たとえばアラーム音、ランプの点滅、あるいはメッセージの表示により冷媒漏洩を報知する。主電源Ｐｓ１からの電力供給が停止している場合でも、冷媒センサｓ１および臭気センサｓ２２の少なくとも一方は動作しているため、動作しているセンサによって冷媒漏洩の検知が可能である。 As shown in FIG. 7, the auxiliary power supply Ps2 supplies power to the odor sensor s22. The auxiliary power supply Ps2 includes, for example, a battery. When the detection level L2 exceeds the threshold value B1, the odor sensor s22 notifies the refrigerant leakage by, for example, an alarm sound, a blinking lamp, or a message display. When the power supply from the main power supply Ps1 is stopped (for example, when the outlet of the air conditioner 200 is unplugged from the main power supply Ps1 or when there is a power failure), the sensor to which the power is supplied from the auxiliary power supply Ps2 is a refrigerant. The sensor s21 may be used. In this case, when the detection level L1 exceeds the threshold value A1, the refrigerant sensor s21 notifies the refrigerant leakage by, for example, an alarm sound, a blinking lamp, or a message display. Even when the power supply from the main power source Ps1 is stopped, at least one of the refrigerant sensor s1 and the odor sensor s22 is operating, so that the operating sensor can detect the refrigerant leakage.

主電源Ｐｓ１からの電力供給が停止する非常時に補助電源Ｐｓ２の電力を確実に確保しておくため、補助電源Ｐｓ２から電力が供給されるセンサは、通常は主電源Ｐｓ１から電力を受けて補助電源Ｐｓ２の電力を消費せず、非常時に補助電源Ｐｓ２から電力を受ける構成とする方が好ましい。また、冷媒漏洩の検知精度を高めるため、主電源Ｐｓ１からの電力供給が停止している場合も冷媒センサｓ１および臭気センサｓ２の双方が動作するように、冷媒センサｓ１および臭気センサｓ２の双方に補助電源Ｐｓ２から電力供給をする方がさらに好ましい。 In order to ensure that the power of the auxiliary power supply Ps2 is secured in an emergency when the power supply from the main power supply Ps1 is stopped, the sensor to which the power is supplied from the auxiliary power supply Ps2 usually receives the power from the main power supply Ps1 and is the auxiliary power supply. It is preferable to configure the configuration so that the power of Ps2 is not consumed and the power is received from the auxiliary power supply Ps2 in an emergency. Further, in order to improve the detection accuracy of refrigerant leakage, both the refrigerant sensor s1 and the odor sensor s2 are operated so that both the refrigerant sensor s1 and the odor sensor s2 operate even when the power supply from the main power source Ps1 is stopped. It is more preferable to supply power from the auxiliary power supply Ps2.

以上、実施の形態２に係る空気調和機によれば、空気調和機に電力が供給されていない場合でも冷媒漏洩の検知が可能になるため、空気調和機の安全性を実施の形態１よりもさらに向上させることができる。 As described above, according to the air conditioner according to the second embodiment, it is possible to detect the refrigerant leakage even when the power is not supplied to the air conditioner. Therefore, the safety of the air conditioner is higher than that of the first embodiment. It can be further improved.

実施の形態３および４．
実施の形態１，２においては、冷凍機油の臭気をセンサによって検知する構成について説明した。実施の形態３および４においては、冷房機油の臭気をユーザに認識させることによって、室内に冷凍機油が漏洩していることをユーザ自身が気づくことができる構成について説明する。Embodiments 3 and 4.
In the first and second embodiments, the configuration in which the odor of the refrigerating machine oil is detected by the sensor has been described. In the third and fourth embodiments, the configuration in which the user can notice that the refrigerating machine oil is leaking into the room by making the user recognize the odor of the cooling machine oil will be described.

実施の形態１に係る空気調和装置において用いられる冷媒に含まれるＲ２９０は、ほとんど無臭であることが知られている。また、空気調和装置内を循環する冷媒には化学的安定性が求められるため、通常、冷媒に付臭剤が混合されない。そのため、室内に漏洩した冷媒の臭気にユーザが気づくことは困難である場合が多い。 It is known that R290 contained in the refrigerant used in the air conditioner according to the first embodiment is almost odorless. Further, since the refrigerant circulating in the air conditioner is required to have chemical stability, an odorant is not usually mixed with the refrigerant. Therefore, it is often difficult for the user to notice the odor of the refrigerant leaked into the room.

一方、ＰＡＧ油のような冷凍機油は、独特の臭気を有するため、空気調和機から冷媒と一緒に冷凍機油が漏洩している場合に、室内に通常と異なる臭気が含まれていることにユーザが気づくことは可能である。しかし、当該臭気が冷凍機油の臭気であることはユーザに認識されていない場合が多い。 On the other hand, since refrigerating machine oil such as PAG oil has a peculiar odor, when the refrigerating machine oil leaks from the air conditioner together with the refrigerant, the user finds that the room contains an odor different from the usual one. Is possible to notice. However, in many cases, the user does not recognize that the odor is the odor of refrigerating machine oil.

そこで、実施の形態３，４においては、空気調和機の圧縮機に潤滑に用いられる冷凍機油のサンプルを用いて、当該冷凍機油の臭気をユーザに予め認識させる。ユーザは、室内において当該臭気を感じたときに、室内に冷凍機油が漏洩していることに気づくことができる。空気調和装置による冷媒濃度を用いた冷媒漏洩判定に加えて、ユーザ自身が室内の冷凍機油の臭気に気づくことができるため、ユーザが冷凍機油の臭気を知らない場合よりも空気調和装置の安全性を向上させることができる。また、空気調和装置に電力が供給されていない場合であっても、冷媒漏洩をユーザ自身が気づくことができる。さらに、実施の形態３，４によれば、臭気センサが不要となるため、実施の形態１，２よりも実施の形態３，４の方が製造コストを低減することができる。 Therefore, in the third and fourth embodiments, the compressor of the air conditioner uses a sample of the refrigerating machine oil used for lubrication, and the user is made to recognize the odor of the refrigerating machine oil in advance. When the user feels the odor in the room, he / she can notice that the refrigerating machine oil is leaking into the room. In addition to the refrigerant leakage determination using the refrigerant concentration by the air conditioner, the user can notice the odor of the refrigerating machine oil in the room, so the safety of the air conditioner is higher than when the user does not know the odor of the refrigerating machine oil. Can be improved. Further, even when power is not supplied to the air conditioner, the user can notice the refrigerant leakage by himself / herself. Further, according to the third and fourth embodiments, since the odor sensor is not required, the manufacturing cost can be reduced in the third and fourth embodiments as compared with the first and second embodiments.

実施の形態３においては、室内機に冷凍機油のサンプル収容部が設けられている空気調和機について説明する。実施の形態４においては、空気調和機とは別個の冷凍機油のサンプル容器が、空気調和機とともに梱包される空気調和機の梱包セットについて説明する。 In the third embodiment, an air conditioner in which the indoor unit is provided with a sample accommodating portion for refrigerating machine oil will be described. In the fourth embodiment, a packing set of an air conditioner in which a sample container of refrigerating machine oil separate from the air conditioner is packed together with the air conditioner will be described.

実施の形態３．
図８は、実施の形態３に係る空気調和機３００の構成を示す機能ブロック図である。空気調和機３００の構成は、図１の空気調和機１００の室内機１０が室内機３０に置き換えられているとともに、室外機１１の制御装置８が制御装置３８に置き換えられた構成である。室内機３０の構成は、室内機１０の構成から臭気センサｓ２が除かれているとともに、図９に示されるようにサンプル容器３１（サンプル収容部）が着脱可能に取り付けられた構成である。制御装置３８は、冷媒センサｓ１からの検知信号を受けて、冷媒濃度を用いた冷媒漏洩判定を行なう一方、冷凍機油の臭気を用いた冷媒漏洩判定を行なわない。制御装置３８は、冷媒濃度の検知レベルＬ１が閾値Ａ１より大きい場合に、安全確保処理を行なう。これら以外の構成は同様であるため、説明を繰り返さない。Embodiment 3.
FIG. 8 is a functional block diagram showing the configuration of the air conditioner 300 according to the third embodiment. The configuration of the air conditioner 300 is such that the indoor unit 10 of the air conditioner 100 in FIG. 1 is replaced with the indoor unit 30, and the control device 8 of the outdoor unit 11 is replaced with the control device 38. The configuration of the indoor unit 30 is such that the odor sensor s2 is removed from the configuration of the indoor unit 10, and the sample container 31 (sample accommodating portion) is detachably attached as shown in FIG. The control device 38 receives the detection signal from the refrigerant sensor s1 and determines the refrigerant leakage using the refrigerant concentration, but does not perform the refrigerant leakage determination using the odor of the refrigerating machine oil. The control device 38 performs the safety ensuring process when the detection level L1 of the refrigerant concentration is larger than the threshold value A1. Since the configurations other than these are the same, the description will not be repeated.

図１０は、図９のサンプル容器３１の概略的な外観図である。図１０に示されるように、サンプル容器３１は、樹脂製の本体３１１と、樹脂製の蓋３１２とを含む。本体３１１は図８の圧縮機３の潤滑に用いられる冷凍機油のサンプルがしみ込んだスポンジＳｐｇを収容する。蓋３１２が本体３１１に取り付けられている場合（図１０（ａ））、冷凍機油の臭気は、サンプル容器３１の内部に密閉され、サンプル容器３１の外部にほとんど漏れない。図１０（ａ）に示される状態で空気調和機３００に取り付けられている。サンプル容器３１は、蓋３１２が本体３１１から外れた状態（図１０（ｂ））において、外部に冷凍機油のサンプルの臭気を放出可能である。ユーザは、サンプル容器３１を空気調和機３００から取り外し、図１０（ｂ）に示されるように蓋３１２を本体３１１から外して、冷凍機油の臭気を確認する。 FIG. 10 is a schematic external view of the sample container 31 of FIG. As shown in FIG. 10, the sample container 31 includes a resin main body 311 and a resin lid 312. The main body 311 contains a sponge Spg soaked with a sample of refrigerating machine oil used for lubricating the compressor 3 of FIG. When the lid 312 is attached to the main body 311 (FIG. 10A), the odor of the refrigerating machine oil is sealed inside the sample container 31 and hardly leaks to the outside of the sample container 31. It is attached to the air conditioner 300 in the state shown in FIG. 10 (a). The sample container 31 can release the odor of the refrigerating machine oil sample to the outside when the lid 312 is removed from the main body 311 (FIG. 10B). The user removes the sample container 31 from the air conditioner 300, removes the lid 312 from the main body 311 as shown in FIG. 10 (b), and confirms the odor of the refrigerating machine oil.

以上、実施の形態３に係る空気調和機によれば、空気調和機の安全性を向上させることができるとともに、空気調和装置の製造コストを実施の形態１，２よりも低減することができる。 As described above, according to the air conditioner according to the third embodiment, the safety of the air conditioner can be improved and the manufacturing cost of the air conditioner can be reduced as compared with the first and second embodiments.

実施の形態４．
図１１は、実施の形態４に係る空気調和機の梱包セット４００によって、室内機４０が梱包されている様子を示す図である。室内機４０の外観は、図２に示される室内機１０と同様である。また、室内機４０は、図８に示される室内機３０と同様に臭気センサを含まない。図１１に示されるように、室内機４０は、緩衝剤４２，４３によって両端部を覆われて、梱包箱４１に収容されている。梱包箱４１が室内機４０の長手方向にスライドされることにより、梱包セット４００は開梱される。Embodiment 4.
FIG. 11 is a diagram showing a state in which the indoor unit 40 is packed by the packing set 400 of the air conditioner according to the fourth embodiment. The appearance of the indoor unit 40 is the same as that of the indoor unit 10 shown in FIG. Further, the indoor unit 40 does not include an odor sensor like the indoor unit 30 shown in FIG. As shown in FIG. 11, the indoor unit 40 is housed in the packing box 41 with both ends covered with the buffers 42 and 43. The packing set 400 is unpacked by sliding the packing box 41 in the longitudinal direction of the indoor unit 40.

図１２は、図１１の梱包セット４００が開梱された様子を示す図である。図１２に示されるように、室内機４０の背面には、リモートコントローラＲｍと、一緒に包装された取扱説明書および冷凍機油のサンプル容器３１とが添付されている。サンプル容器３１は、図１０に示されているものと同様であり、内部に冷凍機油がしみ込んだスポンジを収容している。ユーザは、サンプル容器３１を用いて冷凍機油の臭気を確認することができる。 FIG. 12 is a diagram showing a state in which the packing set 400 of FIG. 11 is unpacked. As shown in FIG. 12, a remote controller Rm, an instruction manual packaged together with the remote controller Rm, and a refrigerating machine oil sample container 31 are attached to the back surface of the indoor unit 40. The sample container 31 is similar to that shown in FIG. 10, and contains a sponge soaked with refrigerating machine oil. The user can confirm the odor of the refrigerating machine oil using the sample container 31.

以上、実施の形態４に係る空気調和機の梱包セットによれば、空気調和機の安全性を向上させることができるとともに、空気調和装置の製造コストを実施の形態１，２よりも低減することができる。 As described above, according to the packing set of the air conditioner according to the fourth embodiment, the safety of the air conditioner can be improved and the manufacturing cost of the air conditioner can be reduced as compared with the first and second embodiments. Can be done.

今回開示された各実施の形態は、矛盾しない範囲で適宜組み合わせて実施することも予定されている。今回開示された各実施の形態はすべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は上記した説明ではなくて請求の範囲によって示され、請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。 It is also planned that the embodiments disclosed this time will be appropriately combined and implemented within a consistent range. It should be considered that each embodiment disclosed this time is exemplary in all respects and not restrictive. The scope of the present invention is shown by the claims rather than the above description, and it is intended to include all modifications within the meaning and scope equivalent to the claims.

１ 室内熱交換器、２ 室内ファン、３ 圧縮機、４ 四方弁、５ 膨張弁、６ 室外熱交換器、７ 室外ファン、８，３８ 制御装置、１０，３０，４０ 室内機、１１ 室外機、３１ サンプル容器、４１ 梱包箱、４２，４３ 緩衝剤、１００，２００，３００ 空気調和機、３１１ 本体、３１２ 蓋、４００ 梱包セット、Ａ１，Ａ２，Ｂ１，Ｂ２ 閾値、Ｐｓ１ 主電源、Ｐｓ２ 補助電源、Ｒｍ リモートコントローラ、Ｓｐｇ スポンジ、ｓ１，ｓ２１ 冷媒センサ、ｓ２，ｓ２１ 臭気センサ。 1 indoor heat exchanger, 2 indoor fan, 3 compressor, 4 four-way valve, 5 expansion valve, 6 outdoor heat exchanger, 7 outdoor fan, 8,38 controller, 10, 30, 40 indoor unit, 11 outdoor unit, 31 sample container, 41 packing box, 42,43 shock absorber, 100, 200, 300 air conditioner, 311 main body, 312 lid, 400 packing set, A1, A2, B1, B2 threshold, Ps1 main power supply, Ps2 auxiliary power supply, Rm remote controller, Spg sponge, s1, s21 refrigerant sensor, s2, s21 odor sensor.

Claims (12)

可燃性の冷媒が、圧縮機、第１熱交換器、膨張弁、および第２熱交換器の順に循環する空気調和機であって、
前記圧縮機は、冷凍機油を貯留し、前記冷媒とともに前記冷凍機油を吐出し、
前記冷凍機油は、前記冷媒とともに前記圧縮機、前記第１熱交換器、前記膨張弁、および前記第２熱交換器の順に循環し、
前記第１熱交換器は、第１空間に配置され、
前記第２熱交換器は、第２空間に配置され、
前記空気調和機は、
前記第１空間内の前記冷媒を検知する第１センサと、
前記第１空間内の前記冷凍機油の臭気を検知する第２センサと、
前記第１センサからの第１検知信号および前記第２センサからの第２検知信号を用いて、前記冷媒の漏洩を検知する制御装置とを備える、空気調和機。An air conditioner in which the flammable refrigerant circulates in the order of the compressor, the first heat exchanger, the expansion valve, and the second heat exchanger.
The compressor stores the refrigerating machine oil and discharges the refrigerating machine oil together with the refrigerant.
The refrigerating machine oil circulates together with the refrigerant in the order of the compressor, the first heat exchanger, the expansion valve, and the second heat exchanger.
The first heat exchanger is arranged in the first space.
The second heat exchanger is arranged in the second space.
The air conditioner is
A first sensor that detects the refrigerant in the first space, and
A second sensor that detects the odor of the refrigerating machine oil in the first space, and
An air conditioner including a control device that detects a leakage of the refrigerant by using a first detection signal from the first sensor and a second detection signal from the second sensor. 前記制御装置は、前記第１検知信号が第１閾値より大きい場合、前記第２検知信号が第２閾値より大きい場合、および前記第１検知信号が第３閾値より大きく、かつ前記第２検知信号が第４閾値より大きい場合に、前記冷媒の漏洩を検知する、請求項１に記載の空気調和機。 In the control device, when the first detection signal is larger than the first threshold value, when the second detection signal is larger than the second threshold value, and when the first detection signal is larger than the third threshold value and the second detection signal is larger than the third threshold value. The air conditioner according to claim 1, wherein when is larger than the fourth threshold value, the leakage of the refrigerant is detected. 前記第３閾値は、前記第１閾値よりも小さく、
前記第４閾値は、前記第２閾値よりも小さい、請求項２に記載の空気調和機。The third threshold is smaller than the first threshold,
The air conditioner according to claim 2, wherein the fourth threshold value is smaller than the second threshold value. 前記第１センサは、第１電源から電力が供給され、
前記第２センサは、第２電源から電力が供給され、
前記制御装置は、前記第１電源から電力が供給され、
前記第２センサは、前記第２検知信号が前記第２閾値を超えた場合、前記冷媒の漏洩を報知する、請求項２または３に記載の空気調和機。The first sensor is supplied with electric power from the first power source.
The second sensor is supplied with electric power from the second power source.
The control device is supplied with electric power from the first power source.
The air conditioner according to claim 2 or 3, wherein the second sensor notifies the leakage of the refrigerant when the second detection signal exceeds the second threshold value. 可燃性の冷媒が、圧縮機、第１熱交換器、膨張弁、および第２熱交換器の順に循環する空気調和機であって、
前記圧縮機は、冷凍機油を貯留し、前記冷媒とともに前記冷凍機油を吐出し、
前記冷凍機油は、前記冷媒とともに前記圧縮機、前記第１熱交換器、前記膨張弁、および前記第２熱交換器の順に循環し、
前記第１熱交換器は、第１空間に配置され、
前記第２熱交換器は、第２空間に配置され、
前記空気調和機は、
前記第１空間内の前記冷媒を検知するセンサと、
前記冷凍機油のサンプルを収容し、外部に前記サンプルの臭気を放出可能なサンプル収容部と、
前記センサからの検知信号を用いて、前記冷媒の漏洩を検知する制御装置とを備える、空気調和機。An air conditioner in which the flammable refrigerant circulates in the order of the compressor, the first heat exchanger, the expansion valve, and the second heat exchanger.
The compressor stores the refrigerating machine oil and discharges the refrigerating machine oil together with the refrigerant.
The refrigerating machine oil circulates together with the refrigerant in the order of the compressor, the first heat exchanger, the expansion valve, and the second heat exchanger.
The first heat exchanger is arranged in the first space.
The second heat exchanger is arranged in the second space.
The air conditioner is
A sensor that detects the refrigerant in the first space and
A sample accommodating portion capable of accommodating a sample of the refrigerating machine oil and releasing the odor of the sample to the outside,
An air conditioner including a control device that detects leakage of the refrigerant by using a detection signal from the sensor. 前記サンプル収容部は、前記第１空間に配置されている、請求項５に記載の空気調和機。 The air conditioner according to claim 5, wherein the sample accommodating portion is arranged in the first space. 前記第１空間は、室内である、請求項１〜６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 6, wherein the first space is an indoor space. 前記冷媒は、Ｒ２９０を含み、
前記冷凍機油は、ポリアルキレングリコールを含む、請求項１〜７のいずれか１項に記載の空気調和機。The refrigerant contains R290 and contains
The air conditioner according to any one of claims 1 to 7, wherein the refrigerating machine oil contains polyalkylene glycol. 可燃性の冷媒が、圧縮機、第１熱交換器、膨張弁、および第２熱交換器の順に循環する空気調和機の梱包セットであって、
前記空気調和機の稼働時において、
前記圧縮機は、冷凍機油を貯留し、前記冷媒とともに前記冷凍機油を吐出し、
前記冷凍機油は、前記冷媒とともに前記圧縮機、前記第１熱交換器、前記膨張弁、および前記第２熱交換器の順に循環し、
前記第１熱交換器は、第１空間に配置され、
前記第２熱交換器は、第２空間に配置され、
前記空気調和機は、
前記第１空間内の前記冷媒を検知するセンサと、
前記センサからの検知信号を用いて、前記冷媒の漏洩を検知する制御装置とを備え、
前記梱包セットは、
前記冷凍機油のサンプルと、
前記圧縮機、前記第１熱交換器、前記膨張弁、前記第２熱交換器、前記センサ、および前記制御装置の少なくとも１つおよび前記サンプルを収容するための梱包箱とを備える、空気調和機の梱包セット。A packing set of an air conditioner in which the flammable refrigerant circulates in the order of the compressor, the first heat exchanger, the expansion valve, and the second heat exchanger.
When the air conditioner is in operation,
The compressor stores the refrigerating machine oil and discharges the refrigerating machine oil together with the refrigerant.
The refrigerating machine oil circulates together with the refrigerant in the order of the compressor, the first heat exchanger, the expansion valve, and the second heat exchanger.
The first heat exchanger is arranged in the first space.
The second heat exchanger is arranged in the second space.
The air conditioner is
A sensor that detects the refrigerant in the first space and
A control device for detecting the leakage of the refrigerant by using the detection signal from the sensor is provided.
The packing set is
With the refrigerating machine oil sample
An air conditioner including the compressor, the first heat exchanger, the expansion valve, the second heat exchanger, the sensor, and at least one of the control devices and a packing box for containing the sample. Packing set. 前記梱包箱には、少なくとも前記第１熱交換器および前記サンプルが収容される、請求項９に記載の空気調和機の梱包セット。 The packing set for the air conditioner according to claim 9, wherein the packing box contains at least the first heat exchanger and the sample. 前記第１空間は、室内である、請求項９または１０に記載の空気調和機の梱包セット。 The air conditioner packing set according to claim 9 or 10, wherein the first space is an indoor space. 前記冷媒は、Ｒ２９０を含み、
前記冷凍機油は、ポリアルキレングリコールを含む、請求項９〜１１のいずれか１項に記載の空気調和機の梱包セット。The refrigerant contains R290 and contains
The packaging set for an air conditioner according to any one of claims 9 to 11, wherein the refrigerating machine oil contains polyalkylene glycol.
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