JP2014081160A - Air conditioner - Google Patents

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JP2014081160A
JP2014081160A JP2012229974A JP2012229974A JP2014081160A JP 2014081160 A JP2014081160 A JP 2014081160A JP 2012229974 A JP2012229974 A JP 2012229974A JP 2012229974 A JP2012229974 A JP 2012229974A JP 2014081160 A JP2014081160 A JP 2014081160A
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refrigerant
indoor unit
air conditioner
indoor
detection sensor
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JP5931688B2 (en
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Hiroyasu Yoneyama
裕康 米山
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Hitachi Appliances Inc
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Hitachi Appliances Inc
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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

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner capable of promptly detecting refrigerant leakage even if a tiny or small amount of the refrigerant leaks.SOLUTION: In an air conditioner, outdoor equipment and indoor equipment 2 are connected by refrigerant pipelines (a refrigerant liquid pipe 3 and a refrigerant gas pipe 4) and a refrigerant is circulated between the outdoor equipment and the indoor equipment to form a refrigeration cycle. A refrigerant leakage detection sensor 24 for detecting a refrigerant gas is installed at a lower part of an area near a connection part which connects a refrigerant pipeline of the indoor equipment 2 with the refrigerant pipelines 3, 4. Preferably, the refrigerant leakage detection sensor is installed on any of a horizontal part or a recessed part 21a of a component of the indoor equipment and a refrigerant receiving part attached to the indoor equipment.

Description

本発明は、冷媒の漏洩を検知できるようにした空気調和機に関する。   The present invention relates to an air conditioner capable of detecting refrigerant leakage.

冷媒の漏洩を検知できるようにした空気調和機に関するものとしては、特許第３６１０８１２号公報（特許文献１）や特許第４６３９４５１号公報（特許文献２）に記載されたものなどがある。   Examples of the air conditioner that can detect the leakage of the refrigerant include those described in Japanese Patent No. 3610812 (Patent Document 1) and Japanese Patent No. 4639451 (Patent Document 2).

上記特許文献１のものには、冷媒回路内で液冷媒が溜まる可能性があるところに温度センサを設け、圧縮機停止中に冷媒温度が所定速度を越えて下降したときに冷媒漏洩と判断することが記載されている。
また、上記特許文献２のものには、室内機の外表面下部に可燃性冷媒ガスを検知するためのセンサを備えることが記載されている。 The thing of the said patent document 1 provides a temperature sensor in the place where a liquid refrigerant may accumulate in a refrigerant circuit, and it judges that it is a refrigerant | coolant leak when a refrigerant | coolant temperature falls over predetermined speed during a compressor stop. It is described.
Moreover, the thing of the said patent document 2 is provided with the sensor for detecting a combustible refrigerant | coolant gas in the outer surface lower part of an indoor unit.

特許第３６１０８１２号公報Japanese Patent No. 3610812 特許第４６３９４５１号公報Japanese Patent No. 4639451

上記特許文献１のものは、圧縮機停止中に前記温度センサで検出した冷媒温度が所定速度を越えて下降したときに、冷媒が漏洩していると判断するものであるが、微量或いは少量の冷媒漏洩の場合は冷媒温度の下降速度が速くならず、検出できないという課題がある。   The thing of the said patent document 1 judges that the refrigerant | coolant has leaked, when the refrigerant | coolant temperature detected with the said temperature sensor falls over a predetermined speed during a compressor stop, In the case of refrigerant leakage, there is a problem that the temperature decrease rate of the refrigerant does not increase and cannot be detected.

また、上記特許文献２のものでは、室内機の外表面下部に可燃性冷媒ガスを検知するためのセンサを設けているが、センサの設置位置と冷媒漏洩箇所が離れている場合、漏洩した冷媒を前記センサで検出することは困難である。漏洩した冷媒が天井裏に溜まる場合であっても、漏洩した冷媒は天井裏を拡散するため、冷媒が大量に漏洩する場合以外は、冷媒漏洩を検出することは難しい。また、冷媒漏洩量が微量或いは少量の場合、前記センサの取付位置まで漏洩して拡散した冷媒が溜まるためには長時間を要するから、冷媒漏洩を迅速に検出することも困難である。従って、この特許文献２のものでも、微量或いは少量の冷媒漏洩を検出することはできないか、仮にできたとしても検出するまでには長時間を要するという課題がある。   Moreover, in the thing of the said patent document 2, although the sensor for detecting combustible refrigerant | coolant gas is provided in the outer surface lower part of an indoor unit, when the installation position of a sensor and the refrigerant | coolant leak location are separated, the refrigerant | coolant which leaked Is difficult to detect with the sensor. Even if the leaked refrigerant accumulates in the back of the ceiling, the leaked refrigerant diffuses in the back of the ceiling, so that it is difficult to detect the refrigerant leak except when a large amount of refrigerant leaks. In addition, when the amount of refrigerant leakage is very small or small, it takes a long time for the refrigerant that has leaked and diffused to the sensor mounting position to accumulate, and it is difficult to quickly detect refrigerant leakage. Therefore, even the thing of this patent document 2 has the subject that a trace amount or a small amount of refrigerant | coolants leakage cannot be detected, or even if it can do it, it will take a long time to detect.

更に、室内機全体を天井裏に設置する天井埋め込みタイプの場合、室内機下面と天井面との間には隙間があるため、漏洩した冷媒が天井裏に堆積してもその検出は困難である。また、天井面を設けず、室内機を屋内の上方にむき出しに設置する場合もあるが、このようなものでは冷媒漏洩の検出は特に困難であった。   Furthermore, in the case of a ceiling-embedded type in which the entire indoor unit is installed behind the ceiling, there is a gap between the lower surface of the indoor unit and the ceiling surface, so it is difficult to detect leaked refrigerant that accumulates on the ceiling. . In some cases, the indoor unit is installed above the indoor without providing a ceiling surface. However, it is particularly difficult to detect the leakage of the refrigerant.

本発明の目的は、微量或いは少量の冷媒漏洩あっても、冷媒漏洩を早く検出することが可能な空気調和機を得ることにある。   An object of the present invention is to obtain an air conditioner capable of quickly detecting refrigerant leakage even when a small amount or a small amount of refrigerant leaks.

上記目的を達成するため、本発明は、室外機と室内機を冷媒配管（冷媒液管及び冷媒ガス管）で接続し、前記室外機と室内機間に冷媒を循環させて冷凍サイクルを構成している空気調和機において、前記室内機と前記冷媒配管とを接続している接続部の近傍下部に、冷媒ガスを検知するための冷媒漏洩検知センサを設置していることを特徴とする。   In order to achieve the above-mentioned object, the present invention configures a refrigeration cycle by connecting an outdoor unit and an indoor unit with refrigerant pipes (refrigerant liquid pipe and refrigerant gas pipe) and circulating refrigerant between the outdoor unit and the indoor unit. The air conditioner is characterized in that a refrigerant leakage detection sensor for detecting refrigerant gas is installed in the lower part in the vicinity of the connection part connecting the indoor unit and the refrigerant pipe.

本発明によれば、微量或いは少量の冷媒漏洩あっても、冷媒漏洩を早く検出することが可能な空気調和機を得ることができる効果がある。   According to the present invention, there is an effect that it is possible to obtain an air conditioner that can quickly detect refrigerant leakage even if a small amount or a small amount of refrigerant leaks.

本発明の空気調和機の実施例１を示す冷凍サイクル系統図。The refrigeration cycle system diagram which shows Example 1 of the air conditioner of this invention. 図１に示す室内機の側面図。The side view of the indoor unit shown in FIG. 図２に示す室内機を上から見た平面図。The top view which looked at the indoor unit shown in FIG. 2 from the top. 本発明の空気調和機の実施例２を説明する図で、室内機の正面図。It is a figure explaining Example 2 of the air conditioner of this invention, and is a front view of an indoor unit. 図４に示す室内機を上から見た平面図。The top view which looked at the indoor unit shown in FIG. 4 from the top.

以下、本発明の空気調和機の具体的実施例を、図面を用いて説明する。各図において、同一符号を付した部分は同一或いは相当する部分を示している。   Hereinafter, specific examples of the air conditioner of the present invention will be described with reference to the drawings. In each figure, the part which attached | subjected the same code | symbol has shown the part which is the same or it corresponds.

本発明の空気調和機の実施例１を図１〜図３により説明する。図１は本発明の空気調和機の実施例１を示す冷凍サイクル系統図、図２は図１に示す室内機の側面図、図３は図２に示す室内機を上から見た平面図である。   A first embodiment of an air conditioner according to the present invention will be described with reference to FIGS. FIG. 1 is a refrigeration cycle system diagram showing Embodiment 1 of an air conditioner of the present invention, FIG. 2 is a side view of the indoor unit shown in FIG. 1, and FIG. 3 is a plan view of the indoor unit shown in FIG. is there.

図１により、本実施例１の空気調和機の冷凍サイクル構成について説明する。図１において、実線矢印は冷房運転、破線矢印は暖房運転における冷媒の流れる方向を示している。また、図１において、１は室外機、２は室内機であり、これら室外機１と室内機２とは冷媒配管、即ち冷媒液管３及び冷媒ガス管４により接続されて空気調和機としての冷凍サイクルを構成している。   The refrigeration cycle configuration of the air conditioner of Embodiment 1 will be described with reference to FIG. In FIG. 1, a solid line arrow indicates the cooling operation, and a broken line arrow indicates the direction of refrigerant flow in the heating operation. In FIG. 1, 1 is an outdoor unit, 2 is an indoor unit, and the outdoor unit 1 and the indoor unit 2 are connected by a refrigerant pipe, that is, a refrigerant liquid pipe 3 and a refrigerant gas pipe 4 as an air conditioner. It constitutes the refrigeration cycle.

前記室外機１は、室外熱交換器５、圧縮機６、アキュムレータ７、四方弁８、電子膨張弁などで構成された制御弁９、前記室外熱交換器５に外部空気を送風するための室外ファン１０、この室外ファン１０を駆動するファンモータ１１、前記冷媒液管３との接続部付近に設けられている液阻止弁１２、前記冷媒ガス管４との接続部付近に設けられているガス阻止弁１３などにより構成されている。   The outdoor unit 1 includes an outdoor heat exchanger 5, a compressor 6, an accumulator 7, a four-way valve 8, a control valve 9 composed of an electronic expansion valve and the like, and an outdoor unit for blowing external air to the outdoor heat exchanger 5. A fan 10, a fan motor 11 that drives the outdoor fan 10, a liquid blocking valve 12 provided in the vicinity of the connection with the refrigerant liquid pipe 3, and a gas provided in the vicinity of the connection with the refrigerant gas pipe 4 It consists of a blocking valve 13 and the like.

前記室内機２は、室内熱交換器１４、電子膨張弁などで構成された制御弁１５、前記室内熱交換器１４に室内空気を送風するため室内ファン１６、この室内ファン１６を駆動するファンモータ１７などにより構成されている。   The indoor unit 2 includes an indoor heat exchanger 14, a control valve 15 including an electronic expansion valve, an indoor fan 16 for blowing indoor air to the indoor heat exchanger 14, and a fan motor that drives the indoor fan 16. 17 or the like.

次に、図１に示す空気調和機を冷房運転する場合の冷媒の流れを説明する。冷房運転時には、冷媒は図１の実線矢印で示すように流れる。即ち、圧縮機６から吐出された高圧ガス冷媒は、四方弁８を通って室外熱交換器５へ流れ、ファンモータ１１で駆動される室外ファン１０によって送風される室外空気と熱交換して凝縮し、液冷媒となる。この液冷媒は開度が大きくされた前記制御弁９と開状態の前記液阻止弁１２を通って、前記冷媒液管３に流出し、前記室内機２へと送られる。   Next, the flow of the refrigerant when the air conditioner shown in FIG. During the cooling operation, the refrigerant flows as indicated by solid line arrows in FIG. That is, the high-pressure gas refrigerant discharged from the compressor 6 flows to the outdoor heat exchanger 5 through the four-way valve 8 and is condensed by exchanging heat with the outdoor air blown by the outdoor fan 10 driven by the fan motor 11. And becomes a liquid refrigerant. The liquid refrigerant flows out to the refrigerant liquid pipe 3 through the control valve 9 whose opening degree is increased and the liquid blocking valve 12 in the open state, and is sent to the indoor unit 2.

前記室内機２に入った前記液冷媒は、開度が絞られた制御弁１５で減圧された後、室内熱交換器１４に入り、ファンモータ１７で駆動される室内ファン１６により送風される室内空気と熱交換する。この熱交換によって、前記室内空気は冷却され、冷媒は前記室内空気から熱を奪って蒸発し、低圧ガス冷媒となって前記冷媒ガス管４を通り前記室外機１へと戻る。この室内機１に戻った低圧ガス冷媒は開状態の前記ガス阻止弁１３を通過後、前記四方弁８を経由して前記アキュムレータ７に入り、ここから前記圧縮機６に吸入されて再び圧縮されるというサイクルを繰り返す。   The liquid refrigerant that has entered the indoor unit 2 is depressurized by the control valve 15 having a reduced opening, and then enters the indoor heat exchanger 14 and is blown by the indoor fan 16 driven by the fan motor 17. Exchange heat with air. By this heat exchange, the indoor air is cooled, and the refrigerant takes heat from the indoor air and evaporates to become a low-pressure gas refrigerant and return to the outdoor unit 1 through the refrigerant gas pipe 4. The low-pressure gas refrigerant that has returned to the indoor unit 1 passes through the gas blocking valve 13 in the open state, and then enters the accumulator 7 through the four-way valve 8, from which it is sucked into the compressor 6 and compressed again. Repeat the cycle.

前記室内機２の具体的構成を図２及び図３により説明する。図２は図１に示す室内機２の側面図、図３は図２に示す室内機を上から見た平面図である。
これらの図に示す室内機２は、天井面１８の内部に嵌め込んで使用される天井カセット型（或いは天井嵌め込み型ともいう）のもので、天井面１８には室内機２よりも大きな天井面開口部１８ａが形成され、この天井面開口部１８ａに前記室内機２が設置されている。 A specific configuration of the indoor unit 2 will be described with reference to FIGS. 2 is a side view of the indoor unit 2 shown in FIG. 1, and FIG. 3 is a plan view of the indoor unit shown in FIG.
The indoor unit 2 shown in these drawings is of a ceiling cassette type (also referred to as a ceiling fitting type) that is used by being fitted inside the ceiling surface 18, and the ceiling surface 18 has a larger ceiling surface than the indoor unit 2. An opening 18a is formed, and the indoor unit 2 is installed in the ceiling surface opening 18a.

この室内機２は、前記室内熱交換器１４や室内ファン１６を収納している筐体２０と、この筐体２０の下部開口を覆うように設けられている化粧パネル２１を備えている。
前記化粧パネル２１は、前記筐体２０に取り付けられ、また図２及び図３に示すように、前記天井面１８と接して前記天井面開口部１８ａを完全に覆うように一回り大きく構成されている。この化粧パネル２１の裏面（反意匠面側）には前記天井面１８とは重ならない水平部（この水平部とは略水平部を含むものである）が存在しており、従って、前記化粧パネル２１の裏面には、厚みのある前記天井面開口部１８ａと前記筐体２０で囲まれた凹部２１ａが周方向に形成されている。 The indoor unit 2 includes a housing 20 that houses the indoor heat exchanger 14 and the indoor fan 16, and a decorative panel 21 that is provided so as to cover a lower opening of the housing 20.
The decorative panel 21 is attached to the housing 20, and is configured to be slightly larger so as to contact the ceiling surface 18 and completely cover the ceiling surface opening 18a, as shown in FIGS. Yes. There is a horizontal portion (this horizontal portion includes a substantially horizontal portion) that does not overlap the ceiling surface 18 on the back surface (anti-design surface side) of the decorative panel 21. A recess 21a surrounded by the thick ceiling surface opening 18a and the housing 20 is formed on the back surface in the circumferential direction.

なお、図２、図３に示す１８ｂは天井裏面である。また、前記筐体２０は図示しない吊りボルトや吊り金具を介して建屋上部の構築材２２に取り付けられている。
図２、図３において、３は冷媒液管、４は冷媒ガス管で、これらの冷媒配管は、図に示すように、室内機２側の冷媒配管と、前記筐体２０の側面角部付近で、ユニオン１９ａ及びフレアナット１９ｂにより接続されている。 In addition, 18b shown in FIG. 2, FIG. 3 is a ceiling back surface. The housing 20 is attached to a construction material 22 at the upper part of the building via suspension bolts and metal fittings (not shown).
2 and 3, 3 is a refrigerant liquid pipe, and 4 is a refrigerant gas pipe. These refrigerant pipes are, as shown in the figure, the refrigerant pipes on the indoor unit 2 side and the vicinity of the side corners of the casing 20. Thus, they are connected by a union 19a and a flare nut 19b.

また、前記筐体２０内には、前記室内熱交換器１４、室内ファン１６及びファンモータ１７などが、図３に示すように配置されて設置されている。２３はドレンポンプである。なお、図３は上から見た平面図であり、筐体２０内に設置されている前記各機器は見えないため、破線で示している。   Further, the indoor heat exchanger 14, the indoor fan 16, and the fan motor 17 are disposed and installed in the housing 20 as shown in FIG. 23 is a drain pump. Note that FIG. 3 is a plan view seen from above, and the respective devices installed in the housing 20 are not visible, and are shown by broken lines.

近年、空気調和機においては、フルオロカーボン系冷媒の漏洩による地球温暖化、Ｒ３２やアンモニア（Ｒ７１７）などの微燃焼性冷媒の漏洩による火災発生などを防止するため、万一冷媒が漏洩した場合には、これを早期に検出して、漏洩箇所の修理など、すばやく対処できるようにすることが望まれている。   In recent years, in air conditioners, in order to prevent global warming due to leakage of fluorocarbon refrigerants, fires due to leakage of slightly combustible refrigerants such as R32 and ammonia (R717), It is desired to detect this at an early stage so that it can be quickly dealt with, such as repairing a leaked part.

一般に使用されている空気調和機は、図１で説明したように、室外機１と室内機２が分離された構成となっており、これら室外機１と室内機２は、据付現地に運ばれてから、前記冷媒液管３と前記冷媒ガス管４で接続されて、冷凍サイクルを構成している。   The air conditioner generally used has a configuration in which the outdoor unit 1 and the indoor unit 2 are separated as described with reference to FIG. 1, and the outdoor unit 1 and the indoor unit 2 are carried to the installation site. Then, the refrigerant liquid pipe 3 and the refrigerant gas pipe 4 are connected to form a refrigeration cycle.

前記室内機２側の冷媒液管３と冷媒ガス管４との接続は、建屋内での作業となるため、火災防止のため、バーナーなど火気を使用しての溶接が困難な場合も多いため、一般的には図２、図３に示したように、ユニオン１９ａとフレアナット１９ｂを用いて接続している。
一方、室内機２内部の前記室内熱交換器１４などの冷媒配管の接続は、生産工場内で作業されるため、溶接で接続され、また製造後に気密試験で漏れの確認も実施される。 Since the connection between the refrigerant liquid pipe 3 and the refrigerant gas pipe 4 on the indoor unit 2 side is an operation in the building, it is often difficult to weld using fire such as a burner to prevent fire. Generally, as shown in FIGS. 2 and 3, the union 19a and the flare nut 19b are used for connection.
On the other hand, since the refrigerant pipes such as the indoor heat exchanger 14 in the indoor unit 2 are connected in the production factory, they are connected by welding, and leakage is also confirmed by an airtight test after manufacturing.

従って、現地据付後に空気調和機から冷媒が漏洩する確率は、製品内部よりはむしろ室内機２の冷媒配管と前記冷媒配管３，４との接続部から漏洩する可能性の方が高い。
また、冷媒としては、フルオロカーボン系の冷媒が使用されることが多いが、フルオロカーボン系の冷媒ガスは大気中では空気より重いので、冷媒漏洩が発生すると冷媒は下方に流れる。 Therefore, the probability that the refrigerant leaks from the air conditioner after field installation is more likely to leak from the connection between the refrigerant pipe of the indoor unit 2 and the refrigerant pipes 3 and 4 rather than the inside of the product.
In addition, a fluorocarbon refrigerant is often used as the refrigerant. However, since the fluorocarbon refrigerant gas is heavier than air in the atmosphere, the refrigerant flows downward when refrigerant leakage occurs.

そこで、本実施例では、冷媒配管の室内機側接続部の近傍下部に、図２、図３に示すように、冷媒漏洩を検知するための冷媒漏洩検知センサ２４を設けている。これにより、前記接続部から冷媒漏洩が発生すると、微量或いは少量の冷媒漏洩であっても、冷媒漏洩をより早く、迅速に検出することが可能となる。   Therefore, in the present embodiment, as shown in FIGS. 2 and 3, a refrigerant leakage detection sensor 24 for detecting refrigerant leakage is provided near the lower part of the refrigerant pipe near the indoor unit side connecting portion. As a result, when a refrigerant leak occurs from the connecting portion, it is possible to detect the refrigerant leak more quickly and quickly even if the refrigerant leak is small or small.

また、前記フルオロカーボン系の冷媒ガスは、前述したように空気より重いため、漏洩した冷媒ガスは下方に流れて、下方に水平部があればそこに留まってから水平方向に拡散していく。従って、前記冷媒配管の室内機側接続部の近傍下部に、前記室内機を構成している構成部品の水平部が存在すれば、ここに前記冷媒漏洩検知センサ２４を設けることにより、漏洩冷媒の検知精度を向上できる。   Further, since the fluorocarbon-based refrigerant gas is heavier than air as described above, the leaked refrigerant gas flows downward, and if there is a horizontal portion below, stays there and diffuses in the horizontal direction. Therefore, if there is a horizontal portion of the component parts constituting the indoor unit in the lower part of the refrigerant pipe in the vicinity of the indoor unit side connecting portion, the refrigerant leakage detection sensor 24 is provided here, thereby providing the leakage refrigerant. Detection accuracy can be improved.

よって、冷媒配管３，４の室内機側接続部近傍下部の水平部に冷媒漏洩検知センサ２４を設置することで、水平部に堆積した冷媒ガスは濃度が濃くなるため、検知精度を向上することができる。特に、近年は、建屋内に天井面１８を設置せずに、前記室内機２を、建屋上部の構築材２２に設置するだけの施工例も増えているが、この様な室内機２の設置形態であっても、室内機２の化粧パネル２１の外周部は水平部となっており、この水平部は前記冷媒配管の室内機側接続部の近傍下部にも通常存在するから、ここに前記冷媒漏洩検知センサ２４を設けることにより検知精度を向上できる。   Therefore, by installing the refrigerant leak detection sensor 24 in the horizontal part near the indoor unit side connection part of the refrigerant pipes 3 and 4, the refrigerant gas accumulated in the horizontal part has a high concentration, so that the detection accuracy is improved. Can do. In particular, in recent years, there has been an increase in construction examples in which the indoor unit 2 is simply installed on the building material 22 in the upper part of the building without installing the ceiling surface 18 in the building. Even if it is a form, since the outer peripheral part of the decorative panel 21 of the indoor unit 2 is a horizontal part, and this horizontal part usually exists in the vicinity lower part of the indoor unit side connection part of the refrigerant pipe, By providing the refrigerant leakage detection sensor 24, the detection accuracy can be improved.

図２、図３に示した室内機２の場合には、前述したように、前記化粧パネル２１の裏面には前記天井面開口部１８ａと前記筐体２０で囲まれた前記凹部２１ａが周方向に形成されているが、前記冷媒配管の室内機側接続部で冷媒漏洩が発生すると、漏洩冷媒は下方に流れて、前記接続部の近傍下部の前記凹部２１ａに溜まる。従って、この凹部２１ａに前記冷媒漏洩検知センサ２４を設置することにより、冷媒漏洩の検知精度を大幅に向上させることができ、微量或いは少量の冷媒漏洩であっても、冷媒漏洩をより早く、迅速に検出可能になる。   In the case of the indoor unit 2 shown in FIGS. 2 and 3, as described above, the recess 21 a surrounded by the ceiling surface opening 18 a and the housing 20 is provided in the circumferential direction on the back surface of the decorative panel 21. However, when a refrigerant leak occurs at the indoor unit side connection portion of the refrigerant pipe, the leaked refrigerant flows downward and accumulates in the concave portion 21a near the lower portion of the connection portion. Therefore, by installing the refrigerant leak detection sensor 24 in the recess 21a, the accuracy of detection of the refrigerant leak can be greatly improved. Can be detected.

なお、上記特許文献２のものでは、室内機筐体の天井裏面に面する下部にガスセンサを設けてはいるが、冷媒配管の室内機側接続部の近傍下部に前記ガスセンサを設置することの配慮が為されておらず、冷媒漏洩が発生しても、ガスセンサには拡散されて濃度の薄くなった冷媒が到達するだけであり、冷媒漏洩の検知精度は低く、微量或いは少量の冷媒漏洩の場合、冷媒漏洩を確実且つ迅速に検知することは困難である。   In addition, in the thing of the said patent document 2, although the gas sensor is provided in the lower part which faces the ceiling back surface of an indoor unit housing | casing, consideration of installing the said gas sensor in the vicinity lower part of the indoor unit side connection part of refrigerant | coolant piping. Even if refrigerant leakage occurs, only the refrigerant that has been diffused and has a low concentration reaches the gas sensor, and the detection accuracy of refrigerant leakage is low. It is difficult to reliably and quickly detect refrigerant leakage.

これに対し本実施例によれば、冷媒配管の室内機側接続部の近傍下部に、冷媒漏洩を検知するための冷媒漏洩検知センサ２４を設けているので、冷媒漏洩の可能性が高い前記接続部から冷媒漏洩が発生すると、微量或いは少量の冷媒漏洩であっても、冷媒漏洩を確実且つ迅速に検出することが可能となる。従って、冷媒漏洩が発生した場合、その漏洩箇所の修理や部品交換などすばやく実施することができるので、地球温暖化防止や火災発生の防止に効果がある。また、冷媒漏洩による空気調和機の性能低下も防止できる。   On the other hand, according to the present embodiment, since the refrigerant leakage detection sensor 24 for detecting refrigerant leakage is provided in the lower part of the refrigerant pipe near the indoor unit side connection portion, the connection with high possibility of refrigerant leakage is provided. When refrigerant leakage occurs from the section, it is possible to detect the refrigerant leakage reliably and promptly even if the amount of refrigerant leakage is small or small. Therefore, when a refrigerant leak occurs, it can be quickly performed such as repairing the leaked part or replacing parts, which is effective in preventing global warming and fire. Moreover, the performance degradation of the air conditioner due to refrigerant leakage can also be prevented.

本発明の空気調和機の実施例２を図４及び図５により説明する。図４は本実施例２を説明する室内機の正面図であり、図５は図４に示す室内機を上から見た平面図である。これらの図において、前述した図１〜図３と同一符号を付した部分は同一或いは相当する部分を示している。   A second embodiment of the air conditioner of the present invention will be described with reference to FIGS. FIG. 4 is a front view of the indoor unit for explaining the second embodiment, and FIG. 5 is a plan view of the indoor unit shown in FIG. 4 as viewed from above. In these drawings, the portions denoted by the same reference numerals as those in FIGS. 1 to 3 described above indicate the same or corresponding portions.

図４及び図５に示す空気調和機の室内機は、天井埋込型のもので、室内機２は天井面１８の裏側に配置され、建屋上部の構築材２２に吊ボルトや吊り金具などで取り付けられているものである。このような天井埋込型の室内機の場合、天井裏に設置されるため、上記実施例１の室内機の場合のような化粧パネルは設けられていない。また、この室内機２の下面と天井裏面１８ｂとの間には隙間Ａが存在する。また、２０は室内機２の筐体で、この筐体２０内には室内熱交換器１４、室内ファン１６及びファンモータ１７などが設置されている。図５は図４に示す室内機を上から見た平面図であるため、筐体２０内に設置されている前記各部品は破線で示されている。   The indoor unit of the air conditioner shown in FIGS. 4 and 5 is a ceiling-embedded type, and the indoor unit 2 is disposed on the back side of the ceiling surface 18 and is attached to the building material 22 at the upper part of the building by a hanging bolt or a hanging bracket. It is what is attached. Since such a ceiling-embedded indoor unit is installed behind the ceiling, the decorative panel as in the case of the indoor unit of the first embodiment is not provided. Further, a gap A exists between the lower surface of the indoor unit 2 and the ceiling back surface 18b. Reference numeral 20 denotes a casing of the indoor unit 2, and an indoor heat exchanger 14, an indoor fan 16, a fan motor 17 and the like are installed in the casing 20. FIG. 5 is a plan view of the indoor unit shown in FIG. 4 as viewed from above, so that the respective components installed in the housing 20 are indicated by broken lines.

３は冷媒液管、４は冷媒ガス管で、これらの冷媒配管は、図４及び図５に示すように、室内機２側の冷媒配管と、前記筐体２０の側面で、ユニオン１９ａ及びフレアナット１９ｂにより接続されている。本実施例における室内機の場合、前述したように、化粧パネルがないため、化粧パネルに冷媒漏洩検知センサ２４を設置することはできない。従って、冷媒漏洩検知センサ２４の設置箇所は、前記筐体２０の側面における冷媒配管の室内機側接続部の近傍下部とすることが考えられる。   3 is a refrigerant liquid pipe, and 4 is a refrigerant gas pipe. These refrigerant pipes are composed of a refrigerant pipe on the indoor unit 2 side and a side surface of the housing 20, as shown in FIGS. It is connected by a nut 19b. In the case of the indoor unit in the present embodiment, as described above, since there is no decorative panel, the refrigerant leak detection sensor 24 cannot be installed on the decorative panel. Therefore, it is conceivable that the installation location of the refrigerant leak detection sensor 24 is the vicinity of the indoor unit side connection portion of the refrigerant pipe on the side surface of the housing 20.

しかし、筐体側面に冷媒漏洩検知センサ２４を設置しただけでは、室内機２の下面と天井裏面１８ｂとの間に前記隙間Ａも存在するため、漏洩冷媒は前記冷媒漏洩検知センサ２４の部分を流下した後前記天井裏面１８ｂを水平方向に拡散する。従って、前記冷媒漏洩検知センサ２４部分の漏洩冷媒濃度を十分に上げることはできない。   However, if the refrigerant leakage detection sensor 24 is simply installed on the side surface of the housing, the gap A also exists between the lower surface of the indoor unit 2 and the ceiling back surface 18b. After flowing down, the ceiling back surface 18b is diffused in the horizontal direction. Therefore, the leakage refrigerant concentration in the refrigerant leakage detection sensor 24 cannot be sufficiently increased.

そこで、本実施例では、冷媒漏洩の検知精度を更に向上させるため、室内機２の筐体２０側面における冷媒配管の室内機側接続部の近傍下部に冷媒受け部２５を取り付け、この冷媒受け部２５に前記冷媒漏洩検知センサ２４を設置している。これにより上述した実施例１と同様の効果を得ることができる。前記冷媒受け部２５は水平部だけを有するものでも良いが、凹部を有する形状（ボックス形状）とすれば、この凹部に漏洩冷媒を十分に溜めることができる。従って、前記凹部に前記冷媒漏洩検知センサ２４を設置することにより、微量或いは少量の冷媒漏洩であっても、冷媒漏洩をより確実に且つより早く検出することが可能となる。   Therefore, in the present embodiment, in order to further improve the detection accuracy of the refrigerant leakage, the refrigerant receiver 25 is attached to the lower part of the refrigerant pipe on the side surface of the casing 20 near the indoor unit side connection part of the refrigerant pipe. The refrigerant leakage detection sensor 24 is installed at 25. As a result, the same effect as in the first embodiment can be obtained. The refrigerant receiving portion 25 may have only a horizontal portion, but if it has a concave shape (box shape), it is possible to sufficiently store leaked refrigerant in the concave portion. Therefore, by installing the refrigerant leak detection sensor 24 in the concave portion, it is possible to detect the refrigerant leak more reliably and earlier even if the refrigerant leak is small or small.

このように、本実施例２によれば、化粧パネルがなく、また、室内機下面と天井裏面１８ｂとの間に隙間Ａが存在するような天井埋込型の室内機であっても、実施例１と同様に、微量或いは少量の冷媒漏洩であっても、冷媒漏洩を確実且つ迅速に検出することが可能となる。   As described above, according to the second embodiment, even a ceiling-embedded indoor unit in which there is no decorative panel and there is a gap A between the lower surface of the indoor unit and the back surface 18b of the ceiling is implemented. Similar to Example 1, it is possible to detect the refrigerant leakage reliably and promptly even if the refrigerant leakage is small or small.

なお、本実施例２で説明した前記冷媒受け部２５は、実施例１で述べたような室内機筐体２０の下部に化粧パネル２１を設けているような室内機であっても同様に適用することが可能である。   The refrigerant receiving portion 25 described in the second embodiment is similarly applied to an indoor unit in which the decorative panel 21 is provided in the lower part of the indoor unit housing 20 as described in the first embodiment. Is possible.

また、室内機２の冷媒配管と、冷媒液管３及び冷媒ガス管４との接続部が、前記室内機の筐体２０内に設けられているような室内機２も存在する。このような室内機２の場合でも、冷媒配管の室内機側接続部の近傍下部に、室内機を構成している構成部品の水平部或いは凹部が存在すれば、ここに冷媒漏洩検知センサ２４を設けることで同様の効果を得ることができる。   There is also an indoor unit 2 in which the connection between the refrigerant pipe of the indoor unit 2 and the refrigerant liquid pipe 3 and the refrigerant gas pipe 4 is provided in the casing 20 of the indoor unit. Even in the case of such an indoor unit 2, if there is a horizontal part or a concave part of the constituent parts constituting the indoor unit in the lower part of the refrigerant pipe near the indoor unit side connection part, the refrigerant leakage detection sensor 24 is provided here. The same effect can be acquired by providing.

更に、前記冷媒配管の室内機側接続部の近傍下部に、フィルタや開口部が設けられていて、漏洩した冷媒ガスが堆積する部分が存在しないような場合には、上記実施例２で説明した冷媒受け部２５を設置すると良い。即ち、前記冷媒配管の室内機側接続部の近傍下部に、水平部或いは凹部を有する冷媒受け部２５を設け、この冷媒受け部２５に冷媒漏洩検知センサ２４を設けることにより、同様の効果を得ることができる。   Further, in the case where a filter or an opening is provided in the lower part of the refrigerant pipe in the vicinity of the indoor unit side connection portion, and there is no portion where the leaked refrigerant gas is accumulated, the above-described second embodiment has been described. It is good to install the refrigerant | coolant receiving part 25. FIG. That is, a similar effect can be obtained by providing a refrigerant receiving portion 25 having a horizontal portion or a concave portion near the indoor unit side connecting portion of the refrigerant pipe, and providing the refrigerant leakage detection sensor 24 in the refrigerant receiving portion 25. be able to.

なお、本発明は上記した実施例に限定されるものではなく、様々な変形例が含まれる。また、上記した実施例は本発明を分かり易く説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。更に、ある実施例の構成の一部を他の実施例の構成に置換えることが可能であり、また、ある実施例の構成に他の実施例の構成を加えることも可能である。また、各実施例の構成の一部について、他の構成の追加・削除・置換をすることが可能である。   In addition, this invention is not limited to an above-described Example, Various modifications are included. The above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Furthermore, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

１：室外機、２：室内機、
３，４：冷媒配管（３：冷媒液管、４：冷媒ガス管）、
５：室外熱交換器、６：圧縮機、７：アキュムレータ、８：四方弁、
９，１５：制御弁、
１０：室外ファン、１１：ファンモータ、
１２：液阻止弁、１３：ガス阻止弁、
１４：室内熱交換器、
１６：室内ファン、１７：ファンモータ、
１８：天井面、１８ａ：天井面開口部、１８ｂ：天井裏面、
１９ａ：ユニオン、１９ｂ：フレアナット、
２０：筐体、
２１：化粧パネル、２１ａ：凹部、
２２：構築材、
２３：ドレンポンプ、
２４：冷媒ガスセンサ
２５：冷媒受け部。 1: outdoor unit, 2: indoor unit,
3, 4: Refrigerant piping (3: Refrigerant liquid pipe, 4: Refrigerant gas pipe),
5: outdoor heat exchanger, 6: compressor, 7: accumulator, 8: four-way valve,
9, 15: control valve,
10: outdoor fan, 11: fan motor,
12: Liquid blocking valve, 13: Gas blocking valve,
14: Indoor heat exchanger,
16: Indoor fan, 17: Fan motor,
18: Ceiling surface, 18a: Ceiling surface opening, 18b: Ceiling back surface,
19a: Union, 19b: Flare nut,
20: housing
21: decorative panel, 21a: recess,
22: Construction material,
23: drain pump,
24: Refrigerant gas sensor 25: Refrigerant receiving part.

Claims (5)

室外機と室内機を冷媒配管で接続し、前記室外機と室内機間に冷媒を循環させて冷凍サイクルを構成している空気調和機において、
前記室内機と前記冷媒配管とを接続している接続部の近傍下部に、冷媒ガスを検知するための冷媒漏洩検知センサを設置している
ことを特徴とする空気調和機。 In an air conditioner in which an outdoor unit and an indoor unit are connected by a refrigerant pipe, and a refrigerant is circulated between the outdoor unit and the indoor unit to constitute a refrigeration cycle.
An air conditioner characterized in that a refrigerant leakage detection sensor for detecting refrigerant gas is installed in a lower part in the vicinity of a connection part connecting the indoor unit and the refrigerant pipe. 請求項１に記載の空気調和機において、
前記冷媒漏洩検知センサは、前記室内機を構成している構成部品の水平部に設置されていることを特徴とする空気調和機。 In the air conditioner according to claim 1,
The air conditioner, wherein the refrigerant leakage detection sensor is installed in a horizontal portion of components constituting the indoor unit. 請求項１に記載の空気調和機において、
前記室内機と前記冷媒配管とを接続している接続部近傍下部の前記室内機に形成された凹部に、前記冷媒漏洩検知センサを設置していることを特徴とする空気調和機。 In the air conditioner according to claim 1,
The air conditioner characterized in that the refrigerant leakage detection sensor is installed in a recess formed in the indoor unit near the lower part of the connection portion connecting the indoor unit and the refrigerant pipe. 請求項２または３に記載の空気調和機において、
前記室内機は、室内熱交換器や室内ファンを収納している筐体と、この室内機筐体の下部開口を覆うように設けられている化粧パネルを備え、
前記冷媒漏洩検知センサは、前記化粧パネルに形成された水平部或いは凹部に設置されていることを特徴とする空気調和機。 In the air conditioner according to claim 2 or 3,
The indoor unit includes a housing that houses an indoor heat exchanger and an indoor fan, and a decorative panel that is provided so as to cover a lower opening of the indoor unit housing.
The air conditioner, wherein the refrigerant leakage detection sensor is installed in a horizontal portion or a recess formed in the decorative panel. 請求項２または３に記載の空気調和機において、
前記室内機は、室内熱交換器や室内ファンを収納している筐体を備え、この室内機筐体に水平部或いは凹部を有する冷媒受け部を取り付け、この冷媒受け部に前記冷媒漏洩検知センサを設置していることを特徴とする空気調和機。 In the air conditioner according to claim 2 or 3,
The indoor unit includes a housing that houses an indoor heat exchanger and an indoor fan, and a refrigerant receiving portion having a horizontal portion or a recessed portion is attached to the indoor unit housing, and the refrigerant leakage detection sensor is installed in the refrigerant receiving portion. An air conditioner characterized by having installed.
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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015230136A (en) * 2014-06-05 2015-12-21 日立アプライアンス株式会社 Air conditioner
JP2016114333A (en) * 2014-12-17 2016-06-23 三菱電機株式会社 Refrigerant leakage detection device and refrigeration cycle device
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JP2017032249A (en) * 2015-08-05 2017-02-09 ダイキン工業株式会社 Indoor unit including discharge device
JP2017075777A (en) * 2015-04-06 2017-04-20 ダイキン工業株式会社 Utilization-side air conditioner and air conditioner comprising the same
WO2017109824A1 (en) * 2015-12-21 2017-06-29 三菱電機株式会社 Refrigeration cycle device
CN107076454A (en) * 2014-10-31 2017-08-18 大金工业株式会社 The indoor set of air conditioner
JP2018009772A (en) * 2016-07-15 2018-01-18 日立ジョンソンコントロールズ空調株式会社 Cooling/heating switching unit and air conditioner including the same
EP3214383A4 (en) * 2014-10-31 2018-07-04 Daikin Industries, Ltd. Air conditioner
JP2018124009A (en) * 2017-01-31 2018-08-09 ダイキン工業株式会社 Refrigeration unit
WO2018216052A1 (en) * 2017-05-22 2018-11-29 三菱電機株式会社 Unit device for refrigeration cycle device
JP2020134126A (en) * 2019-02-20 2020-08-31 パナソニックＩｐマネジメント株式会社 Indoor unit
JP2020134033A (en) * 2019-02-20 2020-08-31 パナソニックＩｐマネジメント株式会社 Indoor unit
WO2021010212A1 (en) * 2019-07-12 2021-01-21 ダイキン工業株式会社 Indoor unit of refrigeration device
EP3757475A4 (en) * 2018-02-20 2021-02-17 Mitsubishi Electric Corporation Indoor unit for air conditioner and air conditioner comprising same indoor unit
JP2021127987A (en) * 2020-01-07 2021-09-02 パナソニックＩｐマネジメント株式会社 Indoor unit
EP3998443A4 (en) * 2019-07-12 2022-08-31 Daikin Industries, Ltd. Indoor unit of refrigeration equipment
US11460206B2 (en) 2017-03-10 2022-10-04 Mitsubishi Electric Corporation Refrigerant detection apparatus
WO2022230325A1 (en) * 2021-04-28 2022-11-03 ダイキン工業株式会社 Installation assistance system for air conditioning device, installation assistance device, and installation assistance method

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0473567A (en) * 1990-07-12 1992-03-09 Koufu Nippon Denki Kk Liquid cooling device
JPH0861702A (en) * 1994-08-18 1996-03-08 Matsushita Electric Ind Co Ltd Integral type air conditioner
JPH0875588A (en) * 1994-09-09 1996-03-22 Mitsubishi Electric Corp Gas leakage detection device
JPH10115478A (en) * 1996-10-09 1998-05-06 Sanyo Electric Co Ltd Air conditioner
JP2002098346A (en) * 2000-09-26 2002-04-05 Daikin Ind Ltd Indoor machine for air conditioner
JP2004178511A (en) * 2002-11-29 2004-06-24 Matsushita Refrig Co Ltd Vending machine
JP2005241052A (en) * 2004-02-24 2005-09-08 Mitsubishi Electric Corp Dehumidifier and package box for dehumidifier
JP2007274786A (en) * 2006-03-30 2007-10-18 Toyota Motor Corp Fuel gas detection device for vehicle
JP2009245948A (en) * 2009-06-10 2009-10-22 Toshiba Home Technology Corp Fuel cell device
US20110138886A1 (en) * 2008-07-04 2011-06-16 Carrier Corporation Refrigerated Transport System Testing
KR20110008888U (en) * 2010-03-12 2011-09-20 박장로 Checking device for piping
US20110277541A1 (en) * 2008-11-26 2011-11-17 Delphi Technologies, Inc. Refrigerant leak detection system

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0473567A (en) * 1990-07-12 1992-03-09 Koufu Nippon Denki Kk Liquid cooling device
JPH0861702A (en) * 1994-08-18 1996-03-08 Matsushita Electric Ind Co Ltd Integral type air conditioner
JPH0875588A (en) * 1994-09-09 1996-03-22 Mitsubishi Electric Corp Gas leakage detection device
JPH10115478A (en) * 1996-10-09 1998-05-06 Sanyo Electric Co Ltd Air conditioner
JP2002098346A (en) * 2000-09-26 2002-04-05 Daikin Ind Ltd Indoor machine for air conditioner
JP2004178511A (en) * 2002-11-29 2004-06-24 Matsushita Refrig Co Ltd Vending machine
JP2005241052A (en) * 2004-02-24 2005-09-08 Mitsubishi Electric Corp Dehumidifier and package box for dehumidifier
JP2007274786A (en) * 2006-03-30 2007-10-18 Toyota Motor Corp Fuel gas detection device for vehicle
US20110138886A1 (en) * 2008-07-04 2011-06-16 Carrier Corporation Refrigerated Transport System Testing
US20110277541A1 (en) * 2008-11-26 2011-11-17 Delphi Technologies, Inc. Refrigerant leak detection system
JP2009245948A (en) * 2009-06-10 2009-10-22 Toshiba Home Technology Corp Fuel cell device
KR20110008888U (en) * 2010-03-12 2011-09-20 박장로 Checking device for piping

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015230136A (en) * 2014-06-05 2015-12-21 日立アプライアンス株式会社 Air conditioner
CN107076454A (en) * 2014-10-31 2017-08-18 大金工业株式会社 The indoor set of air conditioner
US10753631B2 (en) 2014-10-31 2020-08-25 Daikin Industries, Ltd. Air-conditioner indoor unit
EP3214383A4 (en) * 2014-10-31 2018-07-04 Daikin Industries, Ltd. Air conditioner
EP3214386A4 (en) * 2014-10-31 2018-07-25 Daikin Industries, Ltd. Air-conditioner indoor unit
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US11262097B2 (en) 2014-11-18 2022-03-01 Mitsubishi Electric Corporation Method for setting the refrigerant charge amount in an air-conditioning apparatus
JP2016114333A (en) * 2014-12-17 2016-06-23 三菱電機株式会社 Refrigerant leakage detection device and refrigeration cycle device
JP2017075777A (en) * 2015-04-06 2017-04-20 ダイキン工業株式会社 Utilization-side air conditioner and air conditioner comprising the same
JP2017032249A (en) * 2015-08-05 2017-02-09 ダイキン工業株式会社 Indoor unit including discharge device
US10724766B2 (en) 2015-12-21 2020-07-28 Mitsubishi Electric Corporation Refrigeration cycle apparatus
JPWO2017109824A1 (en) * 2015-12-21 2018-08-16 三菱電機株式会社 Refrigeration cycle equipment
CN108369048A (en) * 2015-12-21 2018-08-03 三菱电机株式会社 Refrigerating circulatory device
WO2017109824A1 (en) * 2015-12-21 2017-06-29 三菱電機株式会社 Refrigeration cycle device
CN108369048B (en) * 2015-12-21 2021-03-16 三菱电机株式会社 Refrigeration cycle device
JP2018009772A (en) * 2016-07-15 2018-01-18 日立ジョンソンコントロールズ空調株式会社 Cooling/heating switching unit and air conditioner including the same
JP2018124009A (en) * 2017-01-31 2018-08-09 ダイキン工業株式会社 Refrigeration unit
US11460206B2 (en) 2017-03-10 2022-10-04 Mitsubishi Electric Corporation Refrigerant detection apparatus
WO2018216052A1 (en) * 2017-05-22 2018-11-29 三菱電機株式会社 Unit device for refrigeration cycle device
JPWO2018216052A1 (en) * 2017-05-22 2019-12-19 三菱電機株式会社 Unit equipment for refrigeration cycle equipment
US11262104B2 (en) 2017-05-22 2022-03-01 Mitsubishi Electric Corporation Unit device of refrigeration cycle apparatus
EP3757475A4 (en) * 2018-02-20 2021-02-17 Mitsubishi Electric Corporation Indoor unit for air conditioner and air conditioner comprising same indoor unit
JP2020134033A (en) * 2019-02-20 2020-08-31 パナソニックＩｐマネジメント株式会社 Indoor unit
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JP2021014963A (en) * 2019-07-12 2021-02-12 ダイキン工業株式会社 Indoor unit of refrigeration device
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