JPWO2021260764A5

JPWO2021260764A5 -

Info

Publication number: JPWO2021260764A5
Application number: JP2022531257A
Authority: JP
Filing date: 2020-06-22
Publication date: 2022-10-11

Description

本開示に係る空気調和機は、モータを有し、前記モータの駆動により空調対象空間に空気を送る送風機と、前記モータの音および振動を計測データとして検知する状態検知センサと、前記状態検知センサで検知された前記計測データに基づき、前記モータの故障予兆の有無を判断する制御装置とを備え、前記制御装置は、前記状態検知センサで検知された前記計測データから、周囲の環境の音および振動に関する情報を含む不要成分を除去した状態データを生成するノイズ除去部と、前記状態データと、正常動作しているときの状態データである初期データとを比較し、比較結果に基づき、前記モータの故障予兆の有無を判断する比較判断部と、前記初期データおよび前記状態データの大きさに対して予め設定された閾値を記憶する記憶部とを有し、前記比較判断部は、音および振動の両方において、前記状態データの大きさと前記初期データとの差分が前記閾値以下である場合に、故障予兆なしと判断し、音および振動の両方において、前記差分が前記閾値を超える場合に、故障予兆ありと判断し、音および振動のいずれかにおいて、前記差分が前記閾値を超える場合に、故障予兆の猶予であると判断するものである。 An air conditioner according to the present disclosure includes a blower that includes a motor and drives the motor to send air to an air-conditioned space, a state detection sensor that detects the sound and vibration of the motor as measurement data, and the state detection sensor. a control device that determines whether there is a sign of failure of the motor based on the measurement data detected by the state detection sensor, and the control device detects ambient environmental sounds and A noise removal unit that generates state data from which unnecessary components including information related to vibration are removed, and the state data are compared with initial data that is state data during normal operation, and based on the comparison result, the motor and a storage unit for storing preset threshold values for the magnitudes of the initial data and the state data , wherein the comparison and determination unit includes sound and vibration In both cases, if the difference between the magnitude of the state data and the initial data is equal to or less than the threshold value, it is determined that there is no failure sign, and in both sound and vibration, if the difference exceeds the threshold value, failure It is determined that there is an omen, and if the difference exceeds the threshold for either sound or vibration, it is determined that the failure omen is delayed .

Claims

a blower that has a motor and sends air to an air-conditioned space by being driven by the motor;
a state detection sensor that detects the sound and vibration of the motor as measurement data;
a control device that determines whether there is a sign of failure of the motor based on the measurement data detected by the state detection sensor;
The control device is
a noise removal unit that generates state data by removing unnecessary components including information about sounds and vibrations in the surrounding environment from the measurement data detected by the state detection sensor;
a comparing/determining unit that compares the state data with initial data that is state data when the motor is operating normally, and determines whether or not there is a sign of failure of the motor based on the comparison result;
a storage unit that stores preset threshold values for the sizes of the initial data and the state data ;
The comparison determination unit
In both sound and vibration, when the difference between the magnitude of the state data and the initial data is equal to or less than the threshold, it is determined that there is no sign of failure;
In both sound and vibration, when the difference exceeds the threshold, it is determined that there is a sign of failure,
In either sound or vibration, if the difference exceeds the threshold, it is determined that there is a grace period for the sign of failure.
Air conditioner.

Further comprising a notification means for notifying the judgment result by the comparison judgment unit,
The control device is
When the comparison and determination unit determines that there is a sign of failure, notifying that there is a sign of failure using the notification means,
2. The air system according to claim 1 , wherein when the comparing and judging section determines that there is a grace period for a sign of failure, the notifying means is used to notify that a sign of failure may occur at the time of inspection. harmony machine.

The storage unit
further storing noise data containing sound and vibration information originating from the surrounding environment;
The noise removal unit
Frequency analysis for extracting frequency components of the measurement data is performed on the measurement data detected by the state detection sensor, and unnecessary components are removed from the measurement data subjected to the frequency analysis using the noise data. The air conditioner according to claim 1 or 2 , wherein the air conditioner is removed.

a plurality of the air conditioners according to any one of claims 1 to 3 ;
A centralized control device that manages the plurality of air conditioners,
The centralized control device
An air conditioning system that determines whether or not there is a sign of failure of the motor based on state data of a plurality of air conditioners.