JP5342528B2

JP5342528B2 - Air conditioner with active filter

Info

Publication number: JP5342528B2
Application number: JP2010214594A
Authority: JP
Inventors: 利彦丹所; 達夫安藤; 伊藤　　誠; 成久西貝
Original assignee: Hitachi Appliances Inc
Current assignee: Hitachi Appliances Inc
Priority date: 2010-09-25
Filing date: 2010-09-25
Publication date: 2013-11-13
Anticipated expiration: 2030-09-25
Also published as: JP2012067982A

Description

本発明は高調波を抑制するアクティブフィルタを備えた空気調和装置に関する。 The present invention relates to an air conditioner including an active filter that suppresses harmonics.

従来のアクティブフィルタを備えている空気調和装置においては、アクティブフィルタの故障を判定し、故障があった場合には故障出力手段により故障であることを出力するものがある。しかし、この従来技術のものは、使用者の管理に基づき前記故障出力手段の使用、不使用が決められていたため、アクティブフィルタに故障が起こった場合、故障出力手段を使用している場合にのみ前記使用者が把握できるものの、不使用となっていた場合には故障の把握ができなかった。 Some conventional air conditioners equipped with an active filter determine that the active filter has failed, and if there is a failure, the failure output means outputs a failure. However, in this prior art, since the use or non-use of the failure output means has been determined based on the management of the user, when a failure occurs in the active filter, only when the failure output means is used Although the user can grasp, the failure could not be grasped when it was not used.

また、空気調和機の整流回路に並列に接続され、高調波を抑制するアクティブフィルタ（電源高調波抑制装置）の故障を空気調和機側から検出できるようにしたものとしては特許第３４２４５３９号公報（特許文献１）に記載のものがある。この特許文献１に記載のものは、前記アクティブフィルタ自体に自己異常判定手段を備えており、空気調和機側から前記アクティブフィルタ側には運転／停止にかかる指令信号を送信し、前記アクティブフィルタ側から前記空気調和機側には運転／停止の状態信号を送信するようになっている。例えば、前記空気調和機側から「運転」の指令信号が送信され、前記アクティブフィルタ側から「停止」の状態信号が返信された場合、アクティブフィルタを故障として検出するものである。この特許文献１のものでは、アクティブフィルタの故障を検出するためには、空気調和機側から運転／停止にかかる指令信号をアクティブフィルタ側に送信する必要があった。 Japanese Patent No. 34245539 discloses that a fault of an active filter (power supply harmonic suppression device) that is connected in parallel to a rectifier circuit of an air conditioner and that suppresses harmonics can be detected from the air conditioner side ( There exists a thing as described in patent document 1). The device described in Patent Document 1 includes self-abnormality determination means in the active filter itself, and transmits a command signal for operation / stop from the air conditioner side to the active filter side. Thus, an operation / stop state signal is transmitted to the air conditioner side. For example, when an “operation” command signal is transmitted from the air conditioner side and a “stop” state signal is returned from the active filter side, the active filter is detected as a failure. In this Patent Document 1, in order to detect a failure of the active filter, it is necessary to transmit a command signal for operation / stop from the air conditioner side to the active filter side.

特許第３４２４５３９号公報Japanese Patent No. 3424539

上記従来技術のものでは、空気調和機側からアクティブフィルタの故障を検出するためには、空気調和機側から運転／停止にかかる指令信号をアクティブフィルタ側に送信する必要があり、また、アクティブフィルタ側からその運転状態を空気調和機側に送信する必要があり、そのため構造が複雑となっていた。 In the above prior art, in order to detect a failure of the active filter from the air conditioner side, it is necessary to send a command signal for operation / stop from the air conditioner side to the active filter side. It is necessary to transmit the operation state from the side to the air conditioner side, and thus the structure is complicated.

更に、従来のものでは、アクティブフィルタに備えられた自己異常判定手段で異常と判定されるとすぐに異常停止されてしまい、一時的な異常電流の検出や、空気調和機の運転に影響を与えない軽微な故障であっても空気調和機の運転がすぐに停止されてしまうという課題があった。 Further, in the conventional system, when the abnormality is determined by the self-abnormality determination means provided in the active filter, the abnormal filter is stopped immediately, which affects the detection of temporary abnormal current and the operation of the air conditioner. There was a problem that the operation of the air conditioner would be stopped immediately even if there was no minor failure.

本発明の目的は、空気調和機側からアクティブフィルタ側に運転／停止にかかる指令信号を送信することなく、アクティブフィルタの故障を空気調和機側で検出できるようにすると共に、アクティブフィルタの軽微な故障に対しては空気調和機自体の運転への影響を最小限にして運転を継続できるアクティブフィルタを備えた空気調和装置を得ることにある。 An object of the present invention is to enable detection of a failure of an active filter on the air conditioner side without transmitting a command signal for operation / stop from the air conditioner side to the active filter side. An object of the present invention is to obtain an air conditioner equipped with an active filter that can continue the operation while minimizing the influence on the operation of the air conditioner itself.

上記目的を達成するため、本発明は、室外機を有する空気調和機と、前記室外機の電源配線に接続され電源配線の高調波電流を抑制するアクティブフィルタを備えた空気調和装置において、前記アクティブフィルタは、前記室外機の運転電流を測定する電流センサと、この電流センサで検出された電流が第１の所定値以上のときにアクティブフィルタを起動させる運転手段と、前記電流センサで検出された電流が前記第１の所定値よりも小さい第２の所定値以下のときにアクティブフィルタを停止させる停止手段と、アクティブフィルタの故障を判定する故障判定手段と、この故障判定手段で故障と判定されたときアクティブフィルタの故障発生情報を前記室外機側に出力する故障出力手段とを備え、前記室外機は、前記アクティブフィルタの故障出力手段からの故障発生情報を受ける接点入力手段と、前記アクティブフィルタからの故障発生情報をカウントする故障判定カウント手段と、室外機の動作を判定して室外機を制御する制御手段に指令を与える動作判定手段とを備え、前記アクティブフィルタに設けられた故障判定手段は、一定の時間内に同じ故障モードが所定回数以上発生した場合に一旦停止させ、所定時間経過後に再起動して一定の時間内に同じ故障モードが所定回数以上発生するかどうかでアクティブフィルタの故障を判定するように故障判定に冗長性を持たせ、前記室外機では、前記アクティブフィルタに設けた前記故障判定手段での故障判定回数が所定時間内に所定回数以上発生するかどうかをカウントすることにより前記アクティブフィルタの故障を室外機側でも冗長性を持たせて判定するようにしたことを特徴とする。 In order to achieve the above object, the present invention provides an air conditioner having an outdoor unit and an active filter connected to a power supply wiring of the outdoor unit and suppressing a harmonic current of the power supply wiring. The filter includes a current sensor that measures an operating current of the outdoor unit, an operating unit that activates an active filter when the current detected by the current sensor is equal to or greater than a first predetermined value, and the current sensor. A stop means for stopping the active filter when the current is less than or equal to a second predetermined value smaller than the first predetermined value, a failure determination means for determining a failure of the active filter, and a failure determination means for determining a failure. Fault output means for outputting fault occurrence information of the active filter to the outdoor unit side when the Commands are given to contact input means for receiving failure occurrence information from the failure output means, failure determination counting means for counting failure occurrence information from the active filter, and control means for controlling the outdoor unit by determining the operation of the outdoor unit. A failure determination unit provided in the active filter is temporarily stopped when the same failure mode occurs a predetermined number of times or more within a predetermined time, and is restarted after a predetermined time elapses. In order to determine the failure of the active filter depending on whether the same failure mode occurs more than a predetermined number of times in time, the failure determination means provided in the active filter in the outdoor unit The failure of the active filter is detected outdoors by counting whether or not the failure determination frequency occurs more than a predetermined number of times within a predetermined time. Characterized by being adapted to determine by redundancy in the side.

本発明のアクティブフィルタを備えた空気調和装置によれば、空気調和機側からアクティブフィルタ側に運転／停止にかかる指令信号を送信することなく、アクティブフィルタの故障を空気調和機側で検出することができる。また、アクティブフィルタの軽微な故障に対しては空気調和機自体の運転への影響を最小限にして運転を継続できる効果がある。 According to the air conditioner equipped with the active filter of the present invention, a failure of the active filter is detected on the air conditioner side without transmitting a command signal for operation / stop from the air conditioner side to the active filter side. Can do. In addition, for a minor failure of the active filter, there is an effect that the operation can be continued with the influence on the operation of the air conditioner itself being minimized.

本発明のアクティブフィルタを備えた空気調和装置の実施例１を示す構成図。The block diagram which shows Example 1 of the air conditioning apparatus provided with the active filter of this invention. 本発明のアクティブフィルタを備えた空気調和装置の実施例２を示す構成図。The block diagram which shows Example 2 of the air conditioning apparatus provided with the active filter of this invention.

以下、図面に基づき本発明の具体的実施例を説明する。 Specific embodiments of the present invention will be described below with reference to the drawings.

図１は、本発明のアクティブフィルタを備えた空気調和装置の実施例１を示す構成図である。
空気調和装置１は、室外機１０、該室外機１０に接続された室内機２０、該室内機２０に接続されたリモコンスイッチ３０、前記室外機１０と電源６０とを接続している電源配線６１に接続されたアクティブフィルタ４０などを備えている。前記アクティブフィルタ４０は、前記電源配線６１を流れる高調波電流を正弦波電流にするための補償電流を出力して高調波電流を抑制するものである。前記室外機１０と室内機２０とは冷媒回路（図示せず）で接続されていると共に、配線１９でも接続されている。また、前記室内機２０と前記リモコンスイッチ３１も配線２１で接続されている。 FIG. 1 is a configuration diagram illustrating a first embodiment of an air conditioner including an active filter according to the present invention.
The air conditioner 1 includes an outdoor unit 10, an indoor unit 20 connected to the outdoor unit 10, a remote control switch 30 connected to the indoor unit 20, and a power supply wiring 61 that connects the outdoor unit 10 and a power source 60. And an active filter 40 connected to the. The active filter 40 outputs a compensation current for making the harmonic current flowing through the power supply wiring 61 a sine wave current, thereby suppressing the harmonic current. The outdoor unit 10 and the indoor unit 20 are connected by a refrigerant circuit (not shown) and also by a wiring 19. The indoor unit 20 and the remote control switch 31 are also connected by a wiring 21.

前記アクティブフィルタ４０は、前記室外機１０の運転電流、即ち、前記電源配線を流れる電流を測定する電流センサ４１、この電流センサ４１で検出された前記室外機１０の運転電流が第１の所定値（例えば５アンペア）以上になったときにアクティブフィルタの動作を開始させる運転手段４３、前記室外機１０の運転電流が第２の所定値（例えば２アンペア）以下になったときにアクティブフィルタの動作を停止させる停止手段４４、アクティブフィルタ４０の故障を判定するための故障判定手段４５、該故障判定手段４５でアクティブフィルタ４０が故障であると判定されたとき、故障であることを前記室外機１０の接点入力手段１１に配線４６を介して出力する故障出力手段４２などを備えている。 The active filter 40 includes a current sensor 41 for measuring an operating current of the outdoor unit 10, that is, a current flowing through the power supply wiring, and an operating current of the outdoor unit 10 detected by the current sensor 41 is a first predetermined value. The operation means 43 for starting the operation of the active filter when it becomes (for example, 5 amperes) or more, and the operation of the active filter when the operation current of the outdoor unit 10 becomes a second predetermined value (for example, 2 amperes) or less. Stop means 44 for stopping the operation, failure determination means 45 for determining a failure of the active filter 40, and when the failure determination means 45 determines that the active filter 40 is defective, the outdoor unit 10 A failure output means 42 for outputting to the contact input means 11 via the wiring 46.

前記故障判定手段４５は、例えば何種類かの故障モードがあり、同じ故障モード（例えば異常電流）が９０秒に５回以上起きた場合に一度停止して、アクティブフィルタ４０内に故障表示を行う。１０分経過後に再起動し、更に同じ故障モードが９０秒に５回以上起きた場合には、アクティブフィルタを停止させると共に前記故障出力手段４２を介して故障発生情報を外部出力、即ち前記室外機１０の接点入力手段１１に例えば異常電流発生による故障モードで故障が発生し停止状態にあることを出力する。前記外部出力および故障表示は継続しつつ、１時間待機後、もう一度再起動しても同じ故障モードが９０秒に５回発生した場合には、アクティブフィルタ４０の運転を停止させるという一連の動作をさせる。このとき、例えば異常電流発生による故障モードで停止状態にあることの外部出力を、前記故障出力手段４２から前記室外機１０の前記接点入力手段１１に行い、この外部出力は継続させておく。 The failure determination unit 45 has, for example, several types of failure modes. When the same failure mode (for example, abnormal current) occurs 5 times or more in 90 seconds, the failure determination unit 45 stops once and displays the failure in the active filter 40. . When the same failure mode occurs five times or more in 90 seconds after 10 minutes have elapsed, the active filter is stopped and failure occurrence information is externally output via the failure output means 42, that is, the outdoor unit. The ten contact input means 11 outputs, for example, that a failure has occurred in a failure mode due to the occurrence of an abnormal current and is in a stopped state. While the external output and the failure display continue, if the same failure mode occurs five times in 90 seconds even after restarting again after waiting for 1 hour, a series of operations of stopping the operation of the active filter 40 is performed. Let At this time, for example, an external output indicating that the operation is stopped in the failure mode due to the occurrence of an abnormal current is performed from the failure output means 42 to the contact input means 11 of the outdoor unit 10, and this external output is continued.

なお、前記アクティブフィルタ４０を再起動した後、同じ故障モードの発生が９０秒に５回未満であった場合には前記外部出力は中止され、故障発生情報はリセットされて通常運転に戻る。 If the same failure mode is generated less than 5 times in 90 seconds after the active filter 40 is restarted, the external output is stopped, the failure occurrence information is reset, and the normal operation is resumed.

このように、本実施例ではアクティブフィルタ４０の故障判定に冗長性を持たせている。
なお、図１に示すアクティブフィルタ４０において一点鎖線で囲んで表示している前記運転手段４３、停止手段４４及び故障判定手段４５は本実施例では一つのマイコンで構成されている。 Thus, in this embodiment, redundancy is given to the failure determination of the active filter 40.
In the present embodiment, the operating means 43, the stopping means 44, and the failure determining means 45, which are surrounded by the alternate long and short dash line in the active filter 40 shown in FIG. 1, are constituted by a single microcomputer.

前記室外機１０は、前記アクティブフィルタ４０の故障出力手段４２からの故障発生情報（信号）の出力を入力する前記接点入力手段１１、この接点入力手段１１からの信号を受けて前記アクティブフィルタ４０の故障判定回数をカウントする故障判定カウント手段１３、前記アクティブフィルタの故障出力手段からの故障発生情報を基にアクティブフィルタの運転状態（運転中、ある故障モードで停止状態など）を判定するアクティブフィルタ運転状態判定手段１８、室外機１０の動作を判定する動作判定手段１４、この動作判定手段１４からの指令などに基づき室外機１０の圧縮機などを制御する制御手段１５などを備えている。 The outdoor unit 10 receives the output of failure occurrence information (signal) from the failure output means 42 of the active filter 40, receives the signal from the contact input means 11, and receives the signal from the contact input means 11. A failure determination counting unit 13 that counts the number of times of failure determination, and an active filter operation that determines an operation state of the active filter (during operation, a stopped state in a certain failure mode) based on failure occurrence information from the failure output unit of the active filter A state determination unit 18, an operation determination unit 14 that determines the operation of the outdoor unit 10, and a control unit 15 that controls the compressor of the outdoor unit 10 based on a command from the operation determination unit 14.

前記故障判定カウント手段１３は故障発生情報を受けてアクティブフィルタ４０の故障判定回数をカウント後、カウントされた故障回数が所定回数未満の場合、前記動作判定手段１４にアクティブフィルタ４０を再起動させるための指令を与える。この指令を受けた前記動作判定手段１４は圧縮機が停止している場合には起動させ、起動中であれば一旦停止させた後再起動するように制御手段１５に指令を与える。このように圧縮機を起動させることにより、前記電源配線６１に第１の所定値（例えば５アンペア）以上の電流を流すことができるから、運転手段４３により前記アクティブフィルタ４０が停止中であっても再起動させることができる。 The failure determination counting unit 13 receives the failure occurrence information and counts the number of failure determinations of the active filter 40. When the counted number of failures is less than a predetermined number, the operation determination unit 14 restarts the active filter 40. Is given. In response to this command, the operation determination unit 14 gives a command to the control unit 15 to start when the compressor is stopped, and to stop and restart when the compressor is being started. By starting the compressor in this way, a current of a first predetermined value (for example, 5 amperes) or more can flow through the power supply wiring 61. Therefore, the active filter 40 is stopped by the operating means 43. Can also be restarted.

前記アクティブフィルタ運転状態判定手段１８は、前記故障発生情報が入力された後、所定時間（例えば１時間）経過後もその故障発生情報が継続している（この場合アクティブフィルタは停止されている）場合には前記動作判定手段１４及び前記制御手段１５を介して、室外機１０の圧縮機が停止している場合には起動させ、起動中であれば一旦停止後再起動させる。これによって前記電源配線６１に第１の所定値以上の電流を流すことができるから、運転手段４３により前記アクティブフィルタ４０を再起動させ、停止状態にあるアクティブフィルタ４０を室外機側から再起動させることができる。その後、アクティブフィルタ４０に同じ故障モードでの故障が同様に発生すると、室外機の故障判定カウント手段１３はそのモードでの故障回数を２とカウントし、以下同様の動作を繰り返す。従って、所定の時間内に同じ故障モードでの故障回数が所定回数となった場合、室外機側でもアクティブフィルタの故障と判定し、室外機を停止するように制御されて、アクティブフィルタの必要なメンテナンスなどが行なわれる。 The active filter operation state determination means 18 continues the failure occurrence information even after a predetermined time (for example, 1 hour) has elapsed after the failure occurrence information is input (in this case, the active filter is stopped). In such a case, the operation determination unit 14 and the control unit 15 are activated when the compressor of the outdoor unit 10 is stopped. As a result, a current of a first predetermined value or more can flow through the power supply wiring 61. Therefore, the active filter 40 is restarted by the operating means 43, and the active filter 40 in a stopped state is restarted from the outdoor unit side. be able to. Thereafter, when a failure in the same failure mode similarly occurs in the active filter 40, the failure determination counting means 13 of the outdoor unit counts the number of failures in that mode as 2, and thereafter repeats the same operation. Therefore, when the number of failures in the same failure mode reaches a predetermined number of times within a predetermined time, the outdoor unit side also determines that the active filter has failed, and is controlled to stop the outdoor unit. Maintenance is performed.

このようにすることで、室外機側でもアクティブフィルタの故障判定に冗長性を持たせることができる。従って、アクティブフィルタの軽微な故障に対しては空気調和機自体の運転への影響を最小限にして運転を継続できる効果がある。 By doing in this way, redundancy can be given to the failure determination of an active filter also on the outdoor unit side. Therefore, for a minor failure of the active filter, there is an effect that the operation can be continued with the influence on the operation of the air conditioner itself being minimized.

なお、アクティブフィルタで緊急停止すべき故障が発生した場合、その故障信号を室外機側に発信するが、この故障信号は室外機に設けたアクティブフィルタ故障判定手段１２に入力され、このアクティブフィルタ故障判定手段１２から前記動作判定手段１４に室外機の停止指令が与えられて、室外機の運転は停止される。 When a failure that should be urgently stopped by the active filter occurs, the failure signal is transmitted to the outdoor unit side. This failure signal is input to the active filter failure determination means 12 provided in the outdoor unit, and this active filter failure is detected. An outdoor unit stop command is given from the determination unit 12 to the operation determination unit 14, and the operation of the outdoor unit is stopped.

図１に示す室外機１０において一点鎖線で囲んで表示している前記アクティブフィルタ故障判定手段１２、故障判定カウント手段１３及びアクティブフィルタ運転状態判定手段１８は本実施例では一つのマイコンで構成されている。 In the outdoor unit 10 shown in FIG. 1, the active filter failure determination means 12, the failure determination count means 13, and the active filter operation state determination means 18 that are surrounded by a one-dot chain line are constituted by one microcomputer in this embodiment. Yes.

前記動作判定手段１４は、室外機１０の運転状態（圧縮機の運転／停止など）を検出する運転状態検出手段１６、及びこの運転状態検出手段１６からの情報を基に運転電流を算出するか或いは前記電流センサ４１で検出された電流を基に室外機１０の運転電流を検出する運転電流検出手段１７と接続されている。また、この動作判定手段１４は、前記故障判定カウント手段１３や前記アクティブフィルタ故障判定手段１２からの指令に基づき、室外機１０の圧縮機を停止或いは運転させるかどうかなどを判定し、圧縮機などを制御する制御手段１５に指令を出力する。 The operation determination unit 14 calculates an operation current based on an operation state detection unit 16 that detects an operation state (such as operation / stop of the compressor) of the outdoor unit 10 and information from the operation state detection unit 16. Alternatively, it is connected to operating current detection means 17 that detects the operating current of the outdoor unit 10 based on the current detected by the current sensor 41. The operation determination unit 14 determines whether to stop or operate the compressor of the outdoor unit 10 based on a command from the failure determination count unit 13 or the active filter failure determination unit 12, and the compressor A command is output to the control means 15 for controlling.

また、前記室外機１０には室内機２０が配線接続され、更に前記室内機２０にはリモコンスイッチ３０が接続されていて、前記アクティブフィルタ４０の故障出力手段４２からの故障発生情報を基にアクティブフィルタの運転状態を前記リモコンスイッチに表示させることができるようになっている。即ち、アクティブフィルタ４０の故障判定手段４５による判定情報や、室外機１０側でのアクティブフィルタの故障情報などを配線１９，２１を介してリモモンスイッチ３０等に表示させて、使用者に知らせることができる。 An indoor unit 20 is connected to the outdoor unit 10 by wiring, and a remote control switch 30 is further connected to the indoor unit 20, and active based on failure occurrence information from the failure output means 42 of the active filter 40. The operation state of the filter can be displayed on the remote control switch. That is, the determination information by the failure determination means 45 of the active filter 40, the failure information of the active filter on the outdoor unit 10 side, etc. are displayed on the remote switch 30 etc. via the wirings 19 and 21 to notify the user. Can do.

以上述べたように、本実施例ではアクティブフィルタ４０側での故障判定に冗長性を持たせているだけでなく、室外機１０側でも、アクティブフィルタ４０側で故障と判定した回数が更に所定回数以上となった場合に、初めてアクティブフィルタの故障と判定するように冗長性を持たせているので、アクティブフィルタの軽微な故障に対しては空気調和機自体の運転にほとんど影響させることなく運転を継続できる。 As described above, in this embodiment, not only the failure determination on the active filter 40 side has redundancy, but also the outdoor unit 10 side determines the number of times that the active filter 40 side has determined the failure is a predetermined number of times. In such a case, redundancy is provided so that it is determined that the active filter has failed for the first time. Therefore, operation with little influence on the operation of the air conditioner itself is possible for minor failures of the active filter. Can continue.

また、本実施例では、アクティブフィルタ４０の故障出力手段４２からの情報を室外機１０の接点入力手段１１に常時取り込むようにしているから、空気調和機（室外機）側からアクティブフィルタ側に運転／停止にかかる指令信号を送信することなく、アクティブフィルタの故障情報を室外機１０側で検知することができる。 Further, in this embodiment, since the information from the failure output means 42 of the active filter 40 is always taken into the contact input means 11 of the outdoor unit 10, operation from the air conditioner (outdoor unit) side to the active filter side is performed. The failure information of the active filter can be detected on the outdoor unit 10 side without transmitting a command signal for stopping / stopping.

更に本実施例におけるアクティブフィルタ４０は、電流センサ４１により電流を検出し、運転手段４３と停止手段４４により運転または停止できるように構成されているから、アクティブフィルタ４０に故障が発生して停止している場合でも、故障出力手段４２からの故障発生情報を室外機１０が受けることにより、室外機１０の圧縮機を制御して運転電流を第１の所定値以上に制御することができ、これにより室外機側からアクティブフィルタ４０の再起動をかけることができる。 Furthermore, since the active filter 40 in the present embodiment is configured such that the current can be detected by the current sensor 41 and can be operated or stopped by the operating means 43 and the stopping means 44, the active filter 40 is stopped when a failure occurs. Even when the outdoor unit 10 receives the failure occurrence information from the failure output means 42, the compressor of the outdoor unit 10 can be controlled to control the operating current to the first predetermined value or more. Thus, the active filter 40 can be restarted from the outdoor unit side.

このように、本実施例によれば、空気調和機（室外機の圧縮機）の運転、停止に合わせ、アクティブフィルタ４０を室外機側から自動的に運転、停止させることができるから、アクティブフィルタ４０の軽微な故障に対しては、アクティブフィルタを自動的に再起動させて空気調和機の運転を継続できる。従って、空気調和機の運転への影響を最小限にすることができる。 Thus, according to the present embodiment, the active filter 40 can be automatically operated and stopped from the outdoor unit side in accordance with the operation and stop of the air conditioner (compressor of the outdoor unit). For 40 minor failures, the active filter can be automatically restarted to continue the operation of the air conditioner. Therefore, the influence on the operation of the air conditioner can be minimized.

図２は、本発明のアクティブフィルタを備えた空気調和装置の実施例２を示す構成図で、遠隔地からも空気調和機を操作できるようにしたものである。図２において、図1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す。 FIG. 2 is a block diagram showing a second embodiment of an air conditioner equipped with an active filter of the present invention, in which the air conditioner can be operated from a remote location. 2, the same reference numerals as those in FIG. 1 denote the same or corresponding parts.

本実施例では、室外機（空気調和機）１０やアクティブフィルタ４０などを有する空気調和装置は複数台設けられており、しかもこれら複数台の空気調和装置を遠隔で監視、制御する集中制御装置５０が設けられている。この集中制御装置５０には、前記各アクティブフィルタ４０の故障出力手段４２に配線（信号線）５３で接続される遠隔接点入力手段５１と、前記室外機１０の接点入力手段１１に配線（信号線）５４で接続される運転停止指令出力手段５２などが設けられている。 In the present embodiment, a plurality of air conditioners having an outdoor unit (air conditioner) 10 and an active filter 40 are provided, and a centralized control device 50 that remotely monitors and controls the plurality of air conditioners. Is provided. The central control device 50 includes a remote contact input means 51 connected to the failure output means 42 of each active filter 40 via a wiring (signal line) 53 and a wiring (signal line) to the contact input means 11 of the outdoor unit 10. The operation stop command output means 52 connected at 54) is provided.

アクティブフィルタ４０の故障を出力する故障出力手段４２から配線５３を介して前記集中制御装置５０の遠隔接点入力手段５１にアクティブフィルタ４０の故障情報が入力されると、集中制御装置５０では管理者がモニター画面５５を介してアクティブフィルタ４０の故障情報を見ることができる。通常、この故障情報は運転停止指令出力手段５２から配線５４を介して室外機１０の接点入力手段１１に送信され、実施例１と同様な制御が行われる。 When failure information of the active filter 40 is input from the failure output means 42 that outputs the failure of the active filter 40 to the remote contact input means 51 of the centralized control device 50 via the wiring 53, the centralized control device 50 allows the administrator to The failure information of the active filter 40 can be viewed via the monitor screen 55. Normally, this failure information is transmitted from the operation stop command output means 52 to the contact input means 11 of the outdoor unit 10 via the wiring 54, and the same control as in the first embodiment is performed.

また、前記集中制御装置５０で管理者が、アクティブフィルタ４０の故障情報を見て、該当する室外機１０の運転を停止させるか、停止させないかを判断し、管理者が停止すべきと判断した場合には、集中制御装置５０の運転停止指令出力手段５２から該当する室外機１０に対して運転停止指令を出力することで、当該室外機１０の運転を停止させることもできる。 Further, in the central control device 50, the administrator looks at the failure information of the active filter 40, determines whether or not to stop the operation of the corresponding outdoor unit 10, and determines that the administrator should stop the operation. In this case, the operation of the outdoor unit 10 can be stopped by outputting an operation stop command to the corresponding outdoor unit 10 from the operation stop command output unit 52 of the centralized control device 50.

このように本実施例によれば、実施例１と同様の効果が得られると共に、複数台の空気調和装置に対して遠隔地に設置した集中制御装置５０からアクティブフィルタ４０の故障情報を監視して、該当する室外機１０を停止させたり、運転再開をさせることも可能になる。 As described above, according to the present embodiment, the same effects as those of the first embodiment can be obtained, and the failure information of the active filter 40 can be monitored from the centralized control device 50 installed at a remote place with respect to a plurality of air conditioners. Thus, the corresponding outdoor unit 10 can be stopped or the operation can be restarted.

１空気調和装置
１０室外機
１１接点入力手段
１２アクティブフィルタ故障判定手段
１３故障判定カウント手段
１４動作判定手段
１５制御手段
１６運転状態検出手段
１７運転電流検出手段
１８アクティブフィルタ運転状態判定手段
１９,２１，４６，５３，５４配線（信号線）
２０室内機
３０リモコンスイッチ
４０アクティブフィルタ
４１電流センサ
４２故障出力手段
４３運転手段
４４停止手段
４５故障判定手段
５０集中制御装置
５１遠隔接点入力手段
５２運転停止指令出力手段
５５モニター
６０電源
６１電源配線。 DESCRIPTION OF SYMBOLS 1 Air conditioning apparatus 10 Outdoor unit 11 Contact input means 12 Active filter failure determination means 13 Failure determination count means 14 Operation determination means 15 Control means 16 Operating state detection means 17 Operating current detection means 18 Active filter operation state determination means 19, 21, 46, 53, 54 Wiring (signal line)
20 indoor unit 30 remote control switch 40 active filter 41 current sensor 42 failure output means 43 operation means 44 stop means 45 failure determination means 50 centralized controller 51 remote contact input means 52 operation stop command output means 55 monitor 60 power supply 61 power supply wiring.

Claims

In an air conditioner including an air conditioner having an outdoor unit, and an active filter that is connected to the power supply wiring of the outdoor unit and suppresses harmonic current of the power supply wiring,
The active filter is detected by the current sensor that measures the operating current of the outdoor unit, driving means that activates the active filter when the current detected by the current sensor is equal to or greater than a first predetermined value, and the current sensor. Stop means for stopping the active filter when the measured current is less than or equal to a second predetermined value smaller than the first predetermined value, failure determination means for determining a failure of the active filter, and the failure determination means A fault output means for outputting fault occurrence information of the active filter to the outdoor unit when determined,
The outdoor unit includes a contact input unit that receives failure occurrence information from the failure output unit of the active filter, a failure determination count unit that counts failure occurrence information from the active filter, and an outdoor unit that determines the operation of the outdoor unit. An operation determining means for giving a command to a control means for controlling the machine,
The failure determination means provided in the active filter temporarily stops when the same failure mode has occurred a predetermined number of times within a certain time, restarts after the lapse of the predetermined time, and sets the same failure mode within a certain time. Make the failure judgment redundant so that the failure of the active filter is judged by whether it occurs more than the number of times,
In the outdoor unit, the failure of the active filter is also made redundant on the outdoor unit side by counting whether or not the failure determination number in the failure determination unit provided in the active filter occurs more than a predetermined number of times within a predetermined time. An air conditioner equipped with an active filter, characterized in that it is determined by holding it.

2. The air conditioner including the active filter according to claim 1, wherein the failure determination unit provided in the active filter temporarily stops when the same failure mode occurs a predetermined number of times within a predetermined time, When the same failure mode has occurred more than a predetermined number of times within a certain time after restarting, it is determined that there is a failure and then stopped again. After a predetermined time has elapsed, it is restarted and the same failure mode is determined within a certain time. An air conditioner equipped with an active filter, wherein the active filter is stopped when it occurs more than once.

The air conditioner with an active filter according to claim 2, wherein an active filter operation state is input to the outdoor unit based on failure occurrence information from a failure output means of the active filter. A determination means is provided, and the active filter operation state determination means, when the failure occurrence information continues after a predetermined time has elapsed after the failure occurrence information is input, An air conditioner equipped with an active filter is characterized in that the outdoor unit is stopped / operated through the power supply, whereby a current of a predetermined value or more is supplied to the power supply wiring to restart the active filter.

2. The air conditioner including the active filter according to claim 1, wherein the outdoor unit includes an operation state detection unit that detects an operation state of the outdoor unit, and an operation current detection unit that detects an operation current of the outdoor unit. An air conditioner equipped with an active filter.

2. The air conditioner including the active filter according to claim 1, wherein the failure determination counting unit is active when the failure determination number of the failure determination unit provided in the active filter occurs more than a predetermined number of times within a predetermined time. An air conditioner equipped with an active filter, characterized in that a filter failure is determined and a command to stop the operation of the outdoor unit is output to the operation determination means.

In the air conditioner including the active filter according to claim 1, when a failure that should be urgently stopped on the active filter side occurs, an emergency stop signal is output to the outdoor unit side, and the outdoor unit includes An active filter failure determination means for receiving an emergency stop signal and determining a failure of the active filter is provided, and an outdoor unit stop command is given from the active filter failure determination means to the operation determination means to stop the operation of the outdoor unit. An air conditioner equipped with a characteristic active filter.

The air conditioner having an active filter according to claim 1, wherein an indoor unit is wired to the outdoor unit, and a remote control switch is further provided to the indoor unit, from the failure output means of the active filter. An air conditioner equipped with an active filter, characterized in that the operating state of the active filter is displayed on the remote control switch based on the failure occurrence information.

In Claim 1, the air conditioner which has an outdoor unit, and the air conditioner provided with the active filter which suppresses the harmonic current of a power supply wiring connected to the power supply wiring of the said outdoor unit is provided. A centralized control device for remotely monitoring and controlling the air conditioner is provided. The centralized control device is connected to a remote contact input means connected to the failure output means of each active filter and to a contact input means of the outdoor unit. The operation stop command output means is provided, and the failure information of the active filter can be monitored from a centralized control device installed at a remote location with respect to a plurality of air conditioners, and from the operation stop command output means to the outdoor unit An air conditioner equipped with an active filter, characterized in that it can also be stopped.