JP6138078B2 - Air conditioner - Google Patents

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JP6138078B2
JP6138078B2 JP2014066365A JP2014066365A JP6138078B2 JP 6138078 B2 JP6138078 B2 JP 6138078B2 JP 2014066365 A JP2014066365 A JP 2014066365A JP 2014066365 A JP2014066365 A JP 2014066365A JP 6138078 B2 JP6138078 B2 JP 6138078B2
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indoor unit
outdoor unit
unit
circuit
air conditioner
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JP2015190650A (en
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高田 佳典
佳典 高田
和広 風間
和広 風間
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Mitsubishi Electric Corp
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Description

本発明は、空気調和機に関する。   The present invention relates to an air conditioner.

従来、室外機と室内機とを備える空気調和機では、家屋に設置する際の誤配線等による短絡に対して、室外機および室内機のそれぞれに短絡検出手段を備え、各短絡検出手段では、短絡を検出すると通信接続手段をオフして通信回路の故障を防止している(例えば、下記特許文献1)。   Conventionally, in an air conditioner including an outdoor unit and an indoor unit, with respect to a short circuit due to an incorrect wiring or the like when installed in a house, each of the outdoor unit and the indoor unit includes a short-circuit detection unit. When a short circuit is detected, the communication connection means is turned off to prevent a communication circuit failure (for example, Patent Document 1 below).

特開2010−121810号公報JP 2010-121810 A

しかしながら、上記従来の技術によれば、室外機および室内機で保護回路を構成する。そのため、例えば、室外機の仕様毎に回路保護の対応が異なる場合、それぞれの仕様毎に異なる室内機用の基板が必要になる、という問題があった。   However, according to the conventional technique, the outdoor unit and the indoor unit constitute a protection circuit. Therefore, for example, when circuit protection is different for each specification of the outdoor unit, there is a problem that a different substrate for the indoor unit is required for each specification.

本発明は、上記に鑑みてなされたものであって、室外機側で誤配線および地絡を検出し、室内機側の仕様を統一可能な空気調和機を得ることを目的とする。   The present invention has been made in view of the above, and an object of the present invention is to obtain an air conditioner capable of detecting miswiring and ground faults on the outdoor unit side and unifying specifications on the indoor unit side.

上述した課題を解決し、目的を達成するために、本発明は、接続線で接続された室外機および室内機が、前記接続線のうち活線および中性線を用いて給電を行い、前記接続線のうち信号線および前記中性線を用いて通信を行う空気調和機であって、前記室外機は、接続する外部電源と、前記活線と接続する室外機活線端子と、の間に配置された室外機回路保護部品、を備え、前記室内機は、前記活線と接続する室内機活線端子と、前記信号線と接続する室内機信号線端子と、を接続する室内機リレーと、前記室内機活線端子と後段回路との間に配置されて前記後段回路を保護し、前記室内機リレーと前記後段回路との分起点より後段に配置された室内機回路保護部品と、を備えることを特徴とする。   In order to solve the above-described problems and achieve the object, the present invention provides that an outdoor unit and an indoor unit connected by a connection line perform power feeding using a live line and a neutral line among the connection lines, An air conditioner that performs communication using a signal line and a neutral line among connection lines, wherein the outdoor unit is connected between an external power source to be connected and an outdoor unit live line terminal to be connected to the live line. An indoor unit relay that connects an indoor unit live line terminal connected to the live line and an indoor unit signal line terminal connected to the signal line. And an indoor unit circuit protection component disposed between the indoor unit live line terminal and the rear circuit to protect the rear circuit, and disposed downstream from the starting point of the indoor unit relay and the rear circuit, It is characterized by providing.

本発明によれば、室外機側で誤配線および地絡を検出し、室内機側の仕様を統一できる、という効果を奏する。   According to the present invention, it is possible to detect erroneous wiring and ground faults on the outdoor unit side and unify the specifications on the indoor unit side.

図1は、空気調和機の構成例を示す図である。FIG. 1 is a diagram illustrating a configuration example of an air conditioner. 図2は、空気調和機の室内機において地絡が発生した場合の地絡電流経路を示す図である。FIG. 2 is a diagram illustrating a ground fault current path when a ground fault occurs in the indoor unit of the air conditioner. 図3は、空気調和機において中性線および信号線の誤配線が発生した場合の短絡電流経路を示す図である。FIG. 3 is a diagram illustrating a short-circuit current path when a neutral wire and a signal wire are miswired in the air conditioner. 図4は、室外機ヒューズおよび室内機ヒューズの配置を変更した空気調和機の室内機において地絡が発生した場合の地絡電流経路を示す図である。FIG. 4 is a diagram illustrating a ground fault current path when a ground fault occurs in the indoor unit of the air conditioner in which the arrangement of the outdoor unit fuse and the indoor unit fuse is changed. 図5は、室外機ヒューズおよび室内機ヒューズの配置を変更した空気調和機において中性線および信号線の誤配線が発生した場合の短絡電流経路を示す図である。FIG. 5 is a diagram illustrating a short-circuit current path when an erroneous wiring of the neutral line and the signal line occurs in the air conditioner in which the arrangement of the outdoor unit fuse and the indoor unit fuse is changed. 図6は、室内機にコンプレッサ駆動用リレーを配置する場合の空気調和機の構成例を示す図である。FIG. 6 is a diagram illustrating a configuration example of an air conditioner when a compressor driving relay is arranged in an indoor unit.

以下に、本発明にかかる空気調和機の実施の形態を図面に基づいて詳細に説明する。なお、この実施の形態によりこの発明が限定されるものではない。   Embodiments of an air conditioner according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

実施の形態.
図1は、本実施の形態における空気調和機1の構成例を示す図である。空気調和機1において、室外機10および室内機20は、3本の接続線(活線30、中性線40、信号線50)で接続している。また、外部電源(商用電源60)は、室外機10と接続している。図1において、室外機10は、商用電源60からの電力を用いて、室外機10に接続されている活線30および中性線40を介して、室内機20へ給電を行う。また、室外機10および室内機20は、中性線40および信号線50を用いて通信を行う。中性線40は、給電と通信の両方で共通に使用される。
Embodiment.
FIG. 1 is a diagram illustrating a configuration example of an air conditioner 1 according to the present embodiment. In the air conditioner 1, the outdoor unit 10 and the indoor unit 20 are connected by three connection lines (a live line 30, a neutral line 40, and a signal line 50). An external power source (commercial power source 60) is connected to the outdoor unit 10. In FIG. 1, the outdoor unit 10 uses the electric power from the commercial power supply 60 to supply power to the indoor unit 20 through the live line 30 and the neutral line 40 connected to the outdoor unit 10. Further, the outdoor unit 10 and the indoor unit 20 communicate using the neutral line 40 and the signal line 50. The neutral wire 40 is commonly used for both power supply and communication.

つぎに、室外機10の構成について説明する。室外機10は、回路保護部品である室外機ヒューズ11と、コンプレッサ12と、コンプレッサ駆動用リレー13と、コンプレッサ駆動用リレーコイル14と、商用電源60と接続する室外機端子15と、商用電源60と接続する室外機端子16と、活線30と接続する室外機活線端子17と、中性線40と接続する室外機中性線端子18と、信号線50と接続する室外機信号線端子19と、を備える。   Next, the configuration of the outdoor unit 10 will be described. The outdoor unit 10 includes an outdoor unit fuse 11, which is a circuit protection component, a compressor 12, a compressor driving relay 13, a compressor driving relay coil 14, an outdoor unit terminal 15 connected to a commercial power source 60, and a commercial power source 60. Outdoor unit terminal 16 connected to the live line 30, outdoor unit live line terminal 17 connected to the live line 30, outdoor unit neutral line terminal 18 connected to the neutral line 40, and outdoor unit signal line terminal connected to the signal line 50. 19.

室外機ヒューズ11は、室外機活線端子17と、商用電源60と接続する室外機端子15との間であって、かつ、室外機活線端子17と、コンプレッサ駆動用リレー13との間に配置されている。コンプレッサ12は、コンプレッサ駆動用リレー13および室外機端子15を介して商用電源60と接続し、また、室外機端子16を介して商用電源60と接続している。室外機中性線端子18は、室外機端子16と接続し、かつ、コンプレッサ駆動用リレーコイル14を介して室外機信号線端子19と接続している。室外機端子15は、室外機ヒューズ11を介して室外機活線端子17と接続している。   The outdoor unit fuse 11 is between the outdoor unit live line terminal 17 and the outdoor unit terminal 15 connected to the commercial power source 60, and between the outdoor unit live line terminal 17 and the compressor driving relay 13. Has been placed. The compressor 12 is connected to the commercial power source 60 via the compressor driving relay 13 and the outdoor unit terminal 15, and is connected to the commercial power source 60 via the outdoor unit terminal 16. The outdoor unit neutral line terminal 18 is connected to the outdoor unit terminal 16 and is also connected to the outdoor unit signal line terminal 19 via the compressor driving relay coil 14. The outdoor unit terminal 15 is connected to the outdoor unit live line terminal 17 via the outdoor unit fuse 11.

本実施の形態では、室外機10において、室外機ヒューズ11を、室外機10から室内機20へ給電する接続線の活線30側に配置する。なお、室外機ヒューズ11は、回路を保護する構成の一例であって、これに限定するものではなく、他の部品または複数の部品からなる保護回路を用いてもよい。   In the present embodiment, in the outdoor unit 10, the outdoor unit fuse 11 is disposed on the hot wire 30 side of the connection line that supplies power from the outdoor unit 10 to the indoor unit 20. The outdoor unit fuse 11 is an example of a configuration for protecting a circuit, and is not limited to this, and a protection circuit composed of other components or a plurality of components may be used.

つぎに、室内機20の構成について説明する。室内機20は、室内機用電気配線板21と、活線30と接続する室内機活線端子26と、中性線40と接続する室内機中性線端子27と、信号線50と接続する室内機信号線端子28と、を備える。また、室内機用電気配線板21は、回路保護部品である室内機ヒューズ22と、付加回路23と、整流回路24と、室外機10のコンプレッサ駆動用リレー13を駆動する補助リレーである室内機リレー25と、を備える。   Next, the configuration of the indoor unit 20 will be described. The indoor unit 20 is connected to the indoor unit electrical wiring board 21, the indoor unit live line terminal 26 connected to the live line 30, the indoor unit neutral line terminal 27 connected to the neutral line 40, and the signal line 50. And an indoor unit signal line terminal 28. The indoor unit electrical wiring board 21 is an indoor unit that is an auxiliary relay that drives an indoor unit fuse 22 that is a circuit protection component, an additional circuit 23, a rectifier circuit 24, and a compressor driving relay 13 of the outdoor unit 10. Relay 25.

室内機ヒューズ22は、後段回路(付加回路23、整流回路24)と、室内機活線端子26との間であって、かつ、室内機活線端子26から室内機ヒューズ22および室内機リレー25の分岐点29よりも後段回路側に配置されている。室内機活線端子26は、室内機リレー25を介して室内機信号線端子28と接続している。また、室内機活線端子26は、室内機ヒューズ22および後段回路を介して室内機中性線端子27と接続している。   The indoor unit fuse 22 is between the subsequent circuit (additional circuit 23, rectifier circuit 24) and the indoor unit live line terminal 26, and from the indoor unit live line terminal 26 to the indoor unit fuse 22 and the indoor unit relay 25. It is arranged on the subsequent circuit side from the branch point 29 of the circuit. The indoor unit live line terminal 26 is connected to the indoor unit signal line terminal 28 via the indoor unit relay 25. The indoor unit live line terminal 26 is connected to the indoor unit neutral line terminal 27 via the indoor unit fuse 22 and a subsequent circuit.

本実施の形態では、室内機20において、室内機ヒューズ22を、室内機用電気配線板21上において、商用電源60側から見て、室内機リレー25との分岐点29よりも後段に配置する。なお、室内機ヒューズ22は、回路を保護する構成の一例であって、これに限定するものではなく、他の部品または複数の部品からなる保護回路を用いてもよい。   In the present embodiment, in the indoor unit 20, the indoor unit fuse 22 is disposed on the electrical wiring board 21 for indoor unit at a stage subsequent to the branch point 29 with the indoor unit relay 25 when viewed from the commercial power supply 60 side. . The indoor unit fuse 22 is an example of a configuration for protecting a circuit, and the present invention is not limited to this, and a protection circuit composed of other components or a plurality of components may be used.

つづいて、空気調和機1において、地絡、誤配線が発生した場合の回路保護動作について説明する。図2は、空気調和機1の室内機20において地絡が発生した場合の地絡電流経路70を示す図である。空気調和機1では、室内機20の室内機信号線端子28と接続する配線で地絡が発生した場合、室内機20の室内機リレー25がオンに切り替わると、商用電源60からの電流は、図2の地絡電流経路70が示すように、室外機端子15、室外機ヒューズ11、室外機活線端子17、活線30、室内機活線端子26、室内機リレー25、を経由して地絡地点に流れる。空気調和機1では、室外機ヒューズ11が溶断することで、室外機10および室内機20を構成する他の部品・回路が保護される。   Next, in the air conditioner 1, a circuit protection operation when a ground fault or incorrect wiring occurs will be described. FIG. 2 is a diagram illustrating a ground fault current path 70 when a ground fault occurs in the indoor unit 20 of the air conditioner 1. In the air conditioner 1, when a ground fault occurs in the wiring connected to the indoor unit signal line terminal 28 of the indoor unit 20, when the indoor unit relay 25 of the indoor unit 20 is switched on, the current from the commercial power source 60 is As shown by the ground fault current path 70 in FIG. 2, the outdoor unit terminal 15, the outdoor unit fuse 11, the outdoor unit live line terminal 17, the live line 30, the indoor unit live line terminal 26, and the indoor unit relay 25. It flows to the ground fault point. In the air conditioner 1, the outdoor unit fuse 11 is blown, so that other components and circuits constituting the outdoor unit 10 and the indoor unit 20 are protected.

図3は、空気調和機1において中性線40および信号線50の誤配線が発生した場合の短絡電流経路71を示す図である。図3では、一例として、室外機10の室外機中性線端子18と室内機20の室内機信号線端子28が中性線40で接続され、室外機10の室外機信号線端子19と室内機20の室内機中性線端子27が信号線50で接続されている状態を示す。空気調和機1では、室外機10と室内機20との間を接続する中性線40および信号線50で誤配線が発生した場合、室内機20の室内機リレー25がオンに切り替わると、商用電源60からの電流は、図3の短絡電流経路71が示すように、室外機端子15、室外機ヒューズ11、室外機活線端子17、活線30、室内機活線端子26、室内機リレー25、室内機信号線端子28、中性線40、室外機中性線端子18、室外機端子16、を経由して商用電源60に戻る。空気調和機1では、室外機ヒューズ11が溶断することで、室外機10および室内機20を構成する他の部品・回路が保護される。   FIG. 3 is a diagram illustrating a short-circuit current path 71 when the neutral wiring 40 and the signal line 50 are miswired in the air conditioner 1. In FIG. 3, as an example, the outdoor unit neutral line terminal 18 of the outdoor unit 10 and the indoor unit signal line terminal 28 of the indoor unit 20 are connected by a neutral line 40, and the outdoor unit signal line terminal 19 of the outdoor unit 10 and the room The state in which the indoor unit neutral line terminal 27 of the unit 20 is connected by the signal line 50 is shown. In the air conditioner 1, when an incorrect wiring occurs in the neutral line 40 and the signal line 50 that connect between the outdoor unit 10 and the indoor unit 20, when the indoor unit relay 25 of the indoor unit 20 is switched on, As indicated by the short-circuit current path 71 in FIG. 3, the current from the power source 60 includes the outdoor unit terminal 15, the outdoor unit fuse 11, the outdoor unit live line terminal 17, the live line 30, the indoor unit live line terminal 26, and the indoor unit relay. 25, it returns to the commercial power source 60 via the indoor unit signal line terminal 28, the neutral line 40, the outdoor unit neutral line terminal 18, and the outdoor unit terminal 16. In the air conditioner 1, the outdoor unit fuse 11 is blown, so that other components and circuits constituting the outdoor unit 10 and the indoor unit 20 are protected.

このように、空気調和機1では、室外機ヒューズ11を室外機10から室内機20へ給電する接続線の活線30側に配置し、室内機ヒューズ22を商用電源60側から見て室内機リレー25との分岐点29よりも後段に配置する。室内機20の室内機信号線端子28と接続する配線で地絡が発生した場合、および、室外機10と室内機20との間を接続する中性線40および信号線50で誤配線が発生した場合、のいずれの場合も、室外機10側の室外機ヒューズ11が溶断することで、空気調和機1では、その他の部品・回路が保護される。   As described above, in the air conditioner 1, the outdoor unit fuse 11 is arranged on the live line 30 side of the connection line for supplying power from the outdoor unit 10 to the indoor unit 20, and the indoor unit fuse 22 is viewed from the commercial power supply 60 side. Arranged downstream of the branch point 29 with the relay 25. When a ground fault occurs in the wiring connected to the indoor unit signal line terminal 28 of the indoor unit 20, and a miswiring occurs in the neutral line 40 and the signal line 50 connecting the outdoor unit 10 and the indoor unit 20. In any case, the outdoor unit fuse 11 on the outdoor unit 10 side is melted so that other components and circuits are protected in the air conditioner 1.

ここで、室外機ヒューズ11および室内機ヒューズ22の配置を変更した空気調和機において、地絡、誤配線が発生した場合の回路保護動作について説明する。図4は、室外機ヒューズ11および室内機ヒューズ22の配置を変更した空気調和機1aの室内機20aにおいて地絡が発生した場合の地絡電流経路72を示す図である。図4の空気調和機1aにおいて、図1〜3の空気調和機1との違いは、室外機10aでは、室外機ヒューズ11の配置が、室外機端子15と室外機活線端子17との間から、室外機端子16と室外機中性線端子18との間に変更されている。また、室内機20aでは、室内機用電気配線板21aで室外機ヒューズ11の配置が、商用電源60側から見て、室内機リレー25との分岐点29よりも後段から前段へ変更されている。   Here, in the air conditioner in which the arrangement of the outdoor unit fuse 11 and the indoor unit fuse 22 is changed, a circuit protection operation when a ground fault or incorrect wiring occurs will be described. FIG. 4 is a diagram illustrating a ground fault current path 72 when a ground fault occurs in the indoor unit 20a of the air conditioner 1a in which the arrangement of the outdoor unit fuse 11 and the indoor unit fuse 22 is changed. The air conditioner 1a of FIG. 4 differs from the air conditioner 1 of FIGS. 1 to 3 in that the outdoor unit fuse 11 is arranged between the outdoor unit terminal 15 and the outdoor unit hot wire terminal 17 in the outdoor unit 10a. To the outdoor unit terminal 16 and the outdoor unit neutral wire terminal 18. Further, in the indoor unit 20a, the arrangement of the outdoor unit fuse 11 in the indoor unit electrical wiring board 21a is changed from the rear stage to the front stage from the branch point 29 with the indoor unit relay 25 when viewed from the commercial power source 60 side. .

空気調和機1aでは、室内機20aの室内機信号線端子28と接続する配線で地絡が発生した場合、室内機20aの室内機リレー25がオンに切り替わると、商用電源60からの電流は、図4の地絡電流経路72が示すように、室外機端子15、室外機活線端子17、活線30、室内機活線端子26、室内機ヒューズ22、室内機リレー25、を経由して地絡地点に流れる。空気調和機1aでは、室内機ヒューズ22が溶断することで、室外機10aおよび室内機20aを構成する他の部品・回路が保護される。   In the air conditioner 1a, when a ground fault occurs in the wiring connected to the indoor unit signal line terminal 28 of the indoor unit 20a, when the indoor unit relay 25 of the indoor unit 20a is turned on, the current from the commercial power supply 60 is As shown by the ground fault current path 72 in FIG. 4, the outdoor unit terminal 15, the outdoor unit live line terminal 17, the live line 30, the indoor unit live line terminal 26, the indoor unit fuse 22, and the indoor unit relay 25 are passed. It flows to the ground fault point. In the air conditioner 1a, when the indoor unit fuse 22 is blown, other parts and circuits constituting the outdoor unit 10a and the indoor unit 20a are protected.

図5は、室外機ヒューズ11および室内機ヒューズ22の配置を変更した空気調和機1aにおいて中性線40および信号線50の誤配線が発生した場合の短絡電流経路73を示す図である。空気調和機1aを構成する室外機10aおよび室内機20aの構成は図4と同様であり、接続関係は図3と同様である。空気調和機1aでは、室外機10aと室内機20aとの間を接続する中性線40および信号線50で誤配線が発生した場合、室内機20aの室内機リレー25がオンに切り替わると、商用電源60からの電流は、図5の短絡電流経路73が示すように、室外機端子15、室外機活線端子17、活線30、室内機活線端子26、室内機ヒューズ22、室内機リレー25、室内機信号線端子28、中性線40、室外機中性線端子18、室外機ヒューズ11、室外機端子16、を経由して商用電源60に戻る。空気調和機1aでは、室外機ヒューズ11または室内機ヒューズ22が溶断することで、室外機10aおよび室内機20aを構成する他の部品・回路が保護される。   FIG. 5 is a diagram showing a short-circuit current path 73 in the case where an erroneous wiring of the neutral line 40 and the signal line 50 occurs in the air conditioner 1a in which the arrangement of the outdoor unit fuse 11 and the indoor unit fuse 22 is changed. The configurations of the outdoor unit 10a and the indoor unit 20a constituting the air conditioner 1a are the same as those in FIG. 4, and the connection relationship is the same as that in FIG. In the air conditioner 1a, when an incorrect wiring occurs in the neutral line 40 and the signal line 50 that connect the outdoor unit 10a and the indoor unit 20a, if the indoor unit relay 25 of the indoor unit 20a is switched on, As indicated by the short-circuit current path 73 in FIG. 5, the current from the power source 60 includes the outdoor unit terminal 15, the outdoor unit live line terminal 17, the live line 30, the indoor unit live line terminal 26, the indoor unit fuse 22, and the indoor unit relay. 25, it returns to the commercial power source 60 via the indoor unit signal line terminal 28, the neutral line 40, the outdoor unit neutral line terminal 18, the outdoor unit fuse 11, and the outdoor unit terminal 16. In the air conditioner 1a, the outdoor unit fuse 11 or the indoor unit fuse 22 is blown, so that other parts and circuits constituting the outdoor unit 10a and the indoor unit 20a are protected.

このように、図4,5に示す空気調和機1aでは、誤配線に対して、室外機10aの室外機ヒューズ11または室内機20aの室内機ヒューズ22のいずれかが溶断される。そのため、室内機20aでは、地絡に対する回路保護は必要ないが、誤配線に対する回路保護は必要となる。   As described above, in the air conditioner 1a shown in FIGS. 4 and 5, either the outdoor unit fuse 11 of the outdoor unit 10a or the indoor unit fuse 22 of the indoor unit 20a is blown against an incorrect wiring. Therefore, in the indoor unit 20a, circuit protection against a ground fault is not necessary, but circuit protection against erroneous wiring is necessary.

以上説明したように、本実施の形態によれば、空気調和機1では、室外機10において室外機ヒューズ11を活線に接続することで、誤配線による電源短絡および地絡の両方に対して、他の部品・回路を保護することができる。これにより、室内機20側では、誤配線による電源短絡および地絡に対する保護回路を配置する必要がないことから、室外機10の仕様に関わらず、室内機20側の室内機ヒューズ22を室内機リレー25との分岐点29よりも後段に配置することで、室内機ヒューズ22の実装位置(仕様)を統一することが可能となる。   As described above, according to the present embodiment, in the air conditioner 1, by connecting the outdoor unit fuse 11 to the live line in the outdoor unit 10, it is possible to prevent both power supply short circuit and ground fault due to miswiring. Other parts and circuits can be protected. Thereby, on the indoor unit 20 side, it is not necessary to arrange a protection circuit against a power supply short circuit due to incorrect wiring and a ground fault. Therefore, the indoor unit fuse 22 on the indoor unit 20 side is connected to the indoor unit regardless of the specifications of the outdoor unit 10. Arrangement of the mounting positions (specifications) of the indoor unit fuses 22 is possible by arranging them at a stage after the branch point 29 with the relay 25.

なお、空気調和機では、室内機20の室内機リレー25がコンプレッサ駆動用リレーとして動作する場合についても、室内機20の室内機用電気配線板21を変更することなく、室外機側でリード線による配線接続を変更して室外機ヒューズ11の位置を変更することで、地絡、誤配線に対応することが可能となる。図6は、室内機20にコンプレッサ駆動用リレーを配置する場合の空気調和機1bの構成例を示す図である。空気調和機1bにおいて、室外機10bは、室外機10に対して、コンプレッサ駆動用リレー13およびコンプレッサ駆動用リレーコイル14を削除し、室外機端子15は室外機活線端子17と接続し、室外機端子16は室外機ヒューズ11を介して室外機中性線端子18と接続している。室外機10bでは、リード線で接続された室外機ヒューズ11の接続を変更する。この場合においても、誤配線による電源短絡および地絡に対して、室外機の仕様違いに対して室内機20において、室内機ヒューズ22の実装位置(仕様)を統一することが可能となる。   In the air conditioner, even when the indoor unit relay 25 of the indoor unit 20 operates as a compressor driving relay, the lead wire on the outdoor unit side is not changed without changing the indoor unit electrical wiring board 21 of the indoor unit 20. By changing the wiring connection by changing the position of the outdoor unit fuse 11, it becomes possible to cope with ground faults and incorrect wiring. FIG. 6 is a diagram illustrating a configuration example of the air conditioner 1b when a compressor driving relay is disposed in the indoor unit 20. In the air conditioner 1b, the outdoor unit 10b deletes the compressor driving relay 13 and the compressor driving relay coil 14 from the outdoor unit 10, the outdoor unit terminal 15 is connected to the outdoor unit live line terminal 17, and the outdoor unit 10b. The machine terminal 16 is connected to the outdoor unit neutral wire terminal 18 via the outdoor unit fuse 11. In the outdoor unit 10b, the connection of the outdoor unit fuse 11 connected by the lead wire is changed. Even in this case, the mounting position (specification) of the indoor unit fuse 22 can be unified in the indoor unit 20 with respect to the difference in the specifications of the outdoor unit against a power supply short circuit and a ground fault due to incorrect wiring.

以上のように、本発明にかかる空気調和機および室外機は、回路の保護に有用であり、特に、誤配線および地絡からの保護に適している。   As described above, the air conditioner and the outdoor unit according to the present invention are useful for circuit protection, and are particularly suitable for protection from miswiring and ground faults.

1,1a,1b 空気調和機、10,10a、10b 室外機、11 室外機ヒューズ、12 コンプレッサ、13 コンプレッサ駆動用リレー、14 コンプレッサ駆動用リレーコイル、15,16 室外機端子、17 室外機活線端子、18 室外機中性線端子、19 室外機信号線端子、20,20a 室内機、21,21a 室内機用電気配線板、22 室内機ヒューズ、23 付加回路、24 整流回路、25 室内機リレー、26 室内機活線端子、27 室内機中性線端子、28 室内機信号線端子、29 分岐点、30 活線、40 中性線、50 信号線、60 商用電源、70,72 地絡電流経路、71,73 短絡電流経路。   1, 1a, 1b Air conditioner, 10, 10a, 10b Outdoor unit, 11 Outdoor unit fuse, 12 Compressor, 13 Compressor drive relay, 14 Compressor drive relay coil, 15, 16 Outdoor unit terminal, 17 Outdoor unit hot wire Terminal, 18 outdoor unit neutral line terminal, 19 outdoor unit signal line terminal, 20, 20a indoor unit, 21, 21a electrical wiring board for indoor unit, 22 indoor unit fuse, 23 additional circuit, 24 rectifier circuit, 25 indoor unit relay 26, indoor unit live line terminal, 27 indoor unit neutral line terminal, 28 indoor unit signal line terminal, 29 branch point, 30 live line, 40 neutral line, 50 signal line, 60 commercial power supply, 70, 72 ground fault current Path, 71, 73 Short-circuit current path.

Claims (3)

接続線で接続された室外機および室内機が、前記接続線のうち活線および中性線を用いて給電を行い、前記接続線のうち信号線および前記中性線を用いて通信を行う空気調和機であって、
前記室外機は、
接続する外部電源と、前記活線と接続する室外機活線端子と、の間に配置された室外機回路保護部品、
を備え、
前記室内機は、
前記活線と接続する室内機活線端子と、前記信号線と接続する室内機信号線端子と、を接続する室内機リレーと、
前記室内機活線端子と後段回路との間に配置されて前記後段回路を保護し、前記室内機リレーと前記後段回路との分起点より後段に配置された室内機回路保護部品と、
を備えることを特徴とする空気調和機。
Air in which an outdoor unit and an indoor unit connected by a connection line supply power using a live line and a neutral line among the connection lines, and communicate using a signal line and the neutral line among the connection lines A harmony machine,
The outdoor unit is
An outdoor unit circuit protection component disposed between an external power source to be connected and an outdoor unit live line terminal connected to the live line,
With
The indoor unit is
An indoor unit relay connecting the indoor unit live line terminal connected to the live line, and an indoor unit signal line terminal connected to the signal line,
An indoor unit circuit protection component disposed between the indoor unit live line terminal and the rear circuit to protect the rear circuit, and disposed at a stage subsequent to the starting point of the indoor unit relay and the rear circuit,
An air conditioner comprising:
前記室内機で地絡が発生し、前記室内機の前記室内機リレーがオンの場合、
前記室内機では、前記室内機回路保護部品は、地絡電流経路から外れ、
前記室外機では、前記室外機回路保護部品が溶断し、前記室外機および前記室内機の回路・部品を保護する、
ことを特徴とする請求項1に記載の空気調和機。
When a ground fault occurs in the indoor unit and the indoor unit relay of the indoor unit is on,
In the indoor unit, the indoor unit circuit protection component deviates from the ground fault current path,
In the outdoor unit, the outdoor unit circuit protection component is fused, and the circuit and components of the outdoor unit and the indoor unit are protected.
The air conditioner according to claim 1.
前記室内機と前記室外機との間で前記中性線および前記信号線が誤配線され、前記室内機の前記室内機リレーがオンの場合、
前記室内機では、前記室内機回路保護部品は、誤配線による短絡電流経路から外れ、
前記室外機では、前記室外機回路保護部品が溶断し、前記室外機および前記室内機の回路・部品を保護する、
ことを特徴とする請求項1に記載の空気調和機。
When the neutral line and the signal line are miswired between the indoor unit and the outdoor unit, and the indoor unit relay of the indoor unit is on,
In the indoor unit, the indoor unit circuit protection component is removed from the short-circuit current path due to incorrect wiring,
In the outdoor unit, the outdoor unit circuit protection component is fused, and the circuit and components of the outdoor unit and the indoor unit are protected.
The air conditioner according to claim 1.
JP2014066365A 2014-03-27 2014-03-27 Air conditioner Expired - Fee Related JP6138078B2 (en)

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