JP5183507B2

JP5183507B2 - Air conditioner

Info

Publication number: JP5183507B2
Application number: JP2009010480A
Authority: JP
Inventors: 源安田; 克幸平井
Original assignee: Hitachi Appliances Inc
Current assignee: Hitachi Appliances Inc
Priority date: 2009-01-21
Filing date: 2009-01-21
Publication date: 2013-04-17
Anticipated expiration: 2029-01-21
Also published as: JP2010169287A

Description

本発明は振動センサを備えた空気調和機に関する。 The present invention relates to an air conditioner including a vibration sensor.

従来の空気調和機においては、何らかの要因で送風機や圧縮機等回転体を有する機構に異常が発生し、空気調和機が異常振動している場合においても、それを検知する手段を備えていないため、空気調和機は運転を継続し、結果的に送風機および圧縮機の故障に至ってから冷凍サイクル状態の異常（例えば、冷房時、室外機の送風機が故障した場合には、凝縮圧力が異常上昇する）を検知して、空気調和機を停止していた。また、送風機や圧縮機を複数備えている空気調和機においては、１個の送風機又は圧縮機が故障した場合においても、残りの送風機又は圧縮機により冷凍サイクル状態が変化しない場合があり、送風機又は圧縮機が故障していると判断できないまま、空気調和機は停止せず、運転を継続することがあった。 In a conventional air conditioner, there is no means for detecting even when an abnormality occurs in a mechanism having a rotating body such as a blower or a compressor due to some cause and the air conditioner vibrates abnormally. The air conditioner continues to operate, resulting in abnormalities in the refrigeration cycle after failure of the blower and compressor (for example, when the blower of the outdoor unit fails during cooling, the condensation pressure rises abnormally) ) Was detected and the air conditioner was stopped. Further, in an air conditioner having a plurality of blowers or compressors, even if one blower or compressor fails, the refrigeration cycle state may not be changed by the remaining blowers or compressors. The air conditioner did not stop and could continue operation without being able to determine that the compressor had failed.

例えば特許文献１のものは、空気調和機の圧縮機の振動を基に圧縮機の寿命を予測する装置が組み込まれ、振動加速度の測定値が許容限界値以上に高くなったとき、その測定値が１０分以上続く場合に警報手段から異常信号を発生する。 For example, in Patent Document 1, a device for predicting the life of a compressor based on vibration of a compressor of an air conditioner is incorporated, and when a measured value of vibration acceleration becomes higher than an allowable limit value, the measured value is measured. An alarm signal is generated from the alarm means when this continues for more than 10 minutes.

特開平１０−２８８３７９号公報JP-A-10-288379

しかし、特許文献１のものは、機器の故障以外において発生する振動（例えば地震や工事現場近隣の住居）を故障と判断してしまうおそれがあり、無駄な異常検出を防止することについては十分考慮されていない。 However, in Patent Document 1, there is a risk that vibrations other than equipment failures (for example, earthquakes and dwellings near construction sites) may be judged as failures, and sufficient consideration should be given to preventing useless detection of abnormalities. It has not been.

本発明の目的は、送風機や圧縮機等の故障以外で発生する振動による無駄な異常検出を防止する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 that prevents useless detection of abnormalities due to vibrations other than failures such as a blower and a compressor.

前記の課題を解決するために本発明は、筐体，送風機，圧縮機，熱交換器を備える空気調和機において、前記筐体は振動の振幅値及び振動時間を検出する振動センサと、
検出された該振幅値と振動時間から前記空気調和機の動作状況を判断する制御装置とを備え、前記制御装置に地震検出信号が入力され、該入力時から所定時間を経過した後に前記振動センサで検出された振幅値が予め定めた設定値以上となり、該設定値以上の値を検出した振動時間が予め定めた設定時間以上となった場合に、前記制御手段が前記空気調和機の異常と判断することを特徴とする。 In order to solve the above-described problems, the present invention provides an air conditioner including a housing, a blower, a compressor, and a heat exchanger, wherein the housing detects a vibration amplitude value and a vibration time;
A control device for determining an operating state of the air conditioner from the detected amplitude value and vibration time, and an earthquake detection signal is input to the control device, and the vibration sensor after a predetermined time has elapsed from the input time When the amplitude value detected in (1) is equal to or greater than a predetermined set value and the vibration time for detecting a value equal to or greater than the set value is equal to or greater than a predetermined set time, the control means determines that the air conditioner is abnormal. It is characterized by judging.

また、本発明の他の特徴として、筐体，送風機，圧縮機，熱交換器を備える空気調和機において、前記筐体は振動の振幅値及び振動時間を検出する振動センサと、
検出された該振幅値と振動時間から前記空気調和機の動作状況を判断する制御装置とを備え、前記振動センサで検出された振幅値が予め定めた設定値以上となり、該設定値以上の値を検出した振動時間の累積合計時間が予め定めた設定時間以上となった場合に、前記制御手段が前記空気調和機の異常と判断する。 As another feature of the present invention, in an air conditioner including a housing, a blower, a compressor, and a heat exchanger, the housing detects a vibration amplitude value and a vibration time;
A control device that determines the operating condition of the air conditioner from the detected amplitude value and vibration time, and the amplitude value detected by the vibration sensor is equal to or greater than a predetermined set value, and is a value equal to or greater than the set value. When the cumulative total time of the vibration time in which the detection is detected is equal to or longer than a predetermined set time, the control means determines that the air conditioner is abnormal.

上記において、前記制御装置に地震検出信号が入力され、該入力時から所定時間を経過した後に前記振動センサで検出された振幅値が予め定めた設定値以上となり、該設定値以上の値を検出した振動時間の累積合計時間が予め定めた設定時間以上となった場合に、前記制御手段が前記空気調和機の異常と判断してもよい。 In the above, an earthquake detection signal is input to the control device, and after a predetermined time has elapsed since the input, the amplitude value detected by the vibration sensor is equal to or greater than a predetermined set value, and a value greater than the set value is detected. The control means may determine that the air conditioner is abnormal when the accumulated total time of the vibration time exceeds a predetermined set time.

更に、前記振動センサの前記設定値，前記設定時間，前記所定時間を設定変更可能とするとよい。 Furthermore, it is preferable that the setting value, the setting time, and the predetermined time of the vibration sensor can be changed.

本発明によれば、送風機や圧縮機等の故障以外で発生する振動による無駄な異常検出を防止することができる。 ADVANTAGE OF THE INVENTION According to this invention, the useless abnormality detection by the vibration which generate | occur | produces other than failures, such as a fan and a compressor, can be prevented.

空気調和機の斜視図。The perspective view of an air conditioner. 本発明の実施例１のシーケンス図。The sequence diagram of Example 1 of this invention. 本発明の実施例２のシーケンス図。The sequence diagram of Example 2 of the present invention. 本発明の実施例３のシーケンス図。The sequence diagram of Example 3 of this invention. 本発明の実施例４のシーケンス図。The sequence diagram of Example 4 of this invention.

以下、本発明の実施例について図面を用いて説明する。 Embodiments of the present invention will be described below with reference to the drawings.

図１は、空気調和機の室外機の斜視図を示す。室外機においては、機器を構成する筐体１の底面に設けられた吸込口２より空気を吸込み、吸込まれた空気は熱交換器３を通り、熱交換器３によって仕切られた上方の空間に配置された送風機４によって吹出口５より吹出される。送風機４はクランプ６により固定された電動機７によって駆動する。筐体１の底面には冷媒を圧縮・循環させる圧縮機８を備え、また各部品を駆動・制御する制御装置や異常状態を解除するためのボタン９を備えた電気箱１０が配置される。また機器の振動を検知する振動センサ１１が、故障により振動が増大する部品や故障により振動が発生する部品，部位の周辺に数箇所取付けられる。 FIG. 1 is a perspective view of an outdoor unit of an air conditioner. In the outdoor unit, air is sucked from a suction port 2 provided on the bottom surface of the casing 1 constituting the device, and the sucked air passes through the heat exchanger 3 and enters an upper space partitioned by the heat exchanger 3. It blows out from the blower outlet 5 by the air blower 4 arrange | positioned. The blower 4 is driven by an electric motor 7 fixed by a clamp 6. An electric box 10 having a compressor 8 that compresses and circulates refrigerant, a control device that drives and controls each component, and a button 9 that releases an abnormal state is disposed on the bottom surface of the housing 1. In addition, several vibration sensors 11 for detecting the vibration of the device are attached around the parts that increase the vibration due to the failure, the parts that generate the vibration due to the failure, and the part.

図２は、振動センサ１１で検出される振動の振幅値が継続して設定値を超えるような場合におけるシーケンス図である。本実施例においては、送風機４の故障による異常振動を検知するのに適している。振動センサ１１は、振動が大きく検知される位置に設置されるのが望ましいため、機器上方の外郭やクランプ６等に取付けられる。振動センサ１１による振幅値が設定値を超えた時点を開始時間として、設定値以上の値を検知した時間ｔ１が、予め設定する設定時間Ｔ１より大きくなった場合には、空気調和機の異常と判断する。異常と判断された空気調和機は、使用者に制御装置１２からの異常信号出力表示により異常を知らせる。また、空気調和機は異常信号を出力しながら運転を継続するか、運転を停止するかを選択可能とする。運転を停止する設定を選択した場合においては、リモートコントローラ等により遠方からの再運転はできないようにしておく事が望ましく、電気箱１０内に備えけられたボタン９を押さない限り再運転は不可能としておくことで、現地確認をしない状態での再運転を防止できる。 FIG. 2 is a sequence diagram in the case where the amplitude value of the vibration detected by the vibration sensor 11 continuously exceeds the set value. In this embodiment, it is suitable for detecting abnormal vibration due to the failure of the blower 4. Since the vibration sensor 11 is desirably installed at a position where vibration is greatly detected, the vibration sensor 11 is attached to the outer shell of the apparatus, the clamp 6 or the like. When the time t1 when a value greater than or equal to the set value is detected with the time when the amplitude value by the vibration sensor 11 exceeds the set value as the start time becomes larger than the preset time T1, the air conditioner is considered abnormal. to decide. The air conditioner determined to be abnormal informs the user of the abnormality by displaying an abnormal signal output from the control device 12. In addition, the air conditioner can select whether to continue operation or to stop operation while outputting an abnormal signal. When the setting to stop the operation is selected, it is desirable not to be able to re-operate from a distance with a remote controller or the like, and re-operation is not possible unless the button 9 provided in the electric box 10 is pressed. By making it possible, it is possible to prevent re-operation without on-site confirmation.

図３は、振動センサ１１で検出される振動の振幅値が継続して設定値を超えるような場合において、地震検出信号が入力された場合におけるシーケンス図である。地震検出信号は、例えば地震検出手段を空気調和機の内外に備え、空気調和機内の制御装置に入力される。地震検出信号が入力された場合は、所定時間Ｔ４の間は振動センサ１１の振幅値が設定値を超えたとしても設定値以上の値を検知した時間ｔ１としてカウントしない。こうしておくことで、地震が原因で設定値を超えた場合に空気調和機が異常と判断することを防止する。なお、前記した振動センサ１１の設定値や各時間（Ｔ１，Ｔ４）は、空気調和機の据付状態や地域環境によって変更可能とする。通常使用する場合には、Ｔ１＞Ｔ４に設定され、Ｔ４は地震の揺れ時間から大体１〜２分程度に設定される。地震検出信号が入力できない空気調和機においては、地震による異常の検出を防止するため、Ｔ１は想定される地震の揺れ時間よりも長く設定する。 FIG. 3 is a sequence diagram when an earthquake detection signal is input when the amplitude value of vibration detected by the vibration sensor 11 continuously exceeds the set value. For example, the earthquake detection signal includes an earthquake detection means inside and outside the air conditioner, and is input to a control device in the air conditioner. When the earthquake detection signal is input, even if the amplitude value of the vibration sensor 11 exceeds the set value during the predetermined time T4, it is not counted as the time t1 when a value greater than the set value is detected. This prevents the air conditioner from determining that the air conditioner is abnormal when the set value is exceeded due to an earthquake. The set value and each time (T1, T4) of the vibration sensor 11 described above can be changed depending on the installation state of the air conditioner and the local environment. In normal use, T1> T4 is set, and T4 is set to about 1-2 minutes from the earthquake shaking time. In an air conditioner to which an earthquake detection signal cannot be input, T1 is set to be longer than an expected earthquake shaking time in order to prevent detection of an abnormality due to an earthquake.

図４は、振動センサ１１で検出される振動の周期が乱れた振動や単発的な振動により設定値を超えるような場合におけるシーケンス図である。本実施例においては、送風機４の故障により振幅を持った異常振動や圧縮機８に異物が混入した時のような単発的に発生する異常振動を検知するのに適している。圧縮機８の異常振動を検知したい場合には、正確に振動が検知できるよう圧縮機８に直接振動センサ１１を取付けるのが望ましい。振動センサ１１が設定値を超えた時点を開始時間として、設定時間Ｔ２の間に設定値以上の値を検知した時間ｔ１ｎ（ｎ＝１，２，３‥）の累積合計時間ｔ２が設定時間Ｔ３より大きくなった場合には、空気調和機の異常と判断する。異常と判断された空気調和機は、使用者に制御装置からの異常信号出力表示により異常を知らせる。また、空気調和機は異常信号を出力しながら運転を継続するか、運転を停止するかを選択可能とする。なお、圧縮機８については、始動時に大きく振動する場合があり、圧縮機８が運転・停止を短時間に繰り返すような（例えば空調負荷が小さくサーモオン／オフを繰り返すような）運転状態の場合には、累積合計時間ｔ２が設定時間Ｔ３より大きくなる可能性がある。そのような運転状態となりうる場合には、設定時間Ｔ３を大きく設定する。 FIG. 4 is a sequence diagram in the case where the set value is exceeded due to a disordered vibration or a single vibration detected by the vibration sensor 11. This embodiment is suitable for detecting abnormal vibration having an amplitude due to a failure of the blower 4 and abnormal vibration that occurs once such as when foreign matter enters the compressor 8. When it is desired to detect abnormal vibration of the compressor 8, it is desirable to attach the vibration sensor 11 directly to the compressor 8 so that vibration can be detected accurately. The cumulative total time t2 of times t1n (n = 1, 2, 3,...) At which a value greater than or equal to the set value is detected during the set time T2 with the time when the vibration sensor 11 exceeds the set value as the start time is the set time T3. When it becomes larger, it is determined that the air conditioner is abnormal. The air conditioner determined to be abnormal informs the user of the abnormality by displaying an abnormal signal output from the control device. In addition, the air conditioner can select whether to continue operation or to stop operation while outputting an abnormal signal. Note that the compressor 8 may vibrate greatly at the time of start-up, and when the compressor 8 is in an operating state in which operation and stop are repeated in a short time (for example, the air conditioning load is small and thermo-ON / OFF is repeated). The accumulated total time t2 may be longer than the set time T3. When such an operation state can be achieved, the set time T3 is set large.

図５は、実施例４において、地震検出信号が入力された場合におけるシーケンス図である。地震検出信号が入力された場合は、所定時間Ｔ４の間は振動センサ１１で検出される振動の振幅値が設定値を超えたとしても設定値以上の値を検知した時間ｔ１としてカウントしない。ただし、所定時間Ｔ４経過後、まだ設定時間Ｔ２時間内であって、振動センサ１１の値が設定値を超えた場合には、その時間も累積合計時間ｔ２に含める。なお、前記した振動センサ１１の設定値や各時間（Ｔ２，Ｔ３，Ｔ４）は、空気調和機の据付状態や地域環境によって変更可能する。 FIG. 5 is a sequence diagram when an earthquake detection signal is input in the fourth embodiment. When an earthquake detection signal is input, during the predetermined time T4, even if the amplitude value of vibration detected by the vibration sensor 11 exceeds the set value, it is not counted as time t1 when a value greater than the set value is detected. However, if the value of the vibration sensor 11 exceeds the set value within the set time T2 after the predetermined time T4 has elapsed, that time is also included in the accumulated total time t2. In addition, the set value and each time (T2, T3, T4) of the vibration sensor 11 described above can be changed according to the installation state of the air conditioner and the local environment.

１空気調和機（筐体）
２吸込口
３熱交換器
４送風機
５吹出口
６クランプ
７電動機
８圧縮機
９ボタン
１０電気箱
１１振動センサ
１２制御装置 1 Air conditioner (housing)
2 Suction port 3 Heat exchanger 4 Blower 5 Outlet 6 Clamp 7 Electric motor 8 Compressor 9 Button 10 Electric box 11 Vibration sensor 12 Control device

Claims

In an air conditioner equipped with a housing, a blower, a compressor, and a heat exchanger,
A vibration sensor for detecting vibration of the blower or the compressor ;
If the time amplitude value detected by the vibration sensor is equal to or larger than a set value is larger than the first set time, and a control unit for outputting an abnormality signal,
The controller is
The amplitude value detected by the vibration sensor becomes equal to or greater than the set value until a second set time greater than the first set time elapses after the earthquake detection signal is input . Even if it becomes longer than the set time , an air conditioner is characterized in that it is not determined that the air conditioner is abnormal .

In an air conditioner equipped with a housing, a blower, a compressor, and a heat exchanger,
A vibration sensor for detecting vibration of the blower or the compressor ;
Wherein when the cumulative total time width value vibration detected is equal to or larger than a set value by the vibration sensor is larger than the first set time, and a control unit for outputting an abnormality signal,
The control device includes:
Until the second set time elapses after the earthquake detection signal is input, even if the amplitude value detected by the vibration sensor exceeds the set value, this time is counted as the accumulated total time. An air conditioner characterized in that it does not .

3. The air conditioner according to claim 1, wherein the setting value of the vibration sensor, the first setting time, and the second setting time can be set and changed .