JPH05332590A - Air conditioning apparatus - Google Patents
Air conditioning apparatusInfo
- Publication number
- JPH05332590A JPH05332590A JP4138394A JP13839492A JPH05332590A JP H05332590 A JPH05332590 A JP H05332590A JP 4138394 A JP4138394 A JP 4138394A JP 13839492 A JP13839492 A JP 13839492A JP H05332590 A JPH05332590 A JP H05332590A
- Authority
- JP
- Japan
- Prior art keywords
- blower
- filter
- input
- power source
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Air Conditioning Control Device (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、空気調和装置における
送風機用電動機の電流と電源電圧により、送風機の吸込
口に設けられたフィルタの目づまりを検出する装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for detecting clogging of a filter provided at a suction port of a blower by means of current and power supply voltage of a blower motor in an air conditioner.
【０００２】[0002]
【従来の技術】従来の装置は、送風機内に設けられたフ
ィルタの前後に圧力検出手段を設けて、その差圧により
フィルタの目づまりを判断するものであり、圧力検出手
段等の装置を必要とする。2. Description of the Related Art A conventional device is provided with pressure detecting means before and after a filter provided in a blower, and judges clogging of the filter based on a differential pressure between the filters, which requires a device such as pressure detecting means. To do.
【０００３】従来の特開平2−215998 号公報に記載され
るように、送風機用ダクトに設けられた圧力検出手段に
より機外静圧を検知し、目的風量確保の為に送風機用電
動機への入力周波数を段階的に制御する技術が提案され
ているが、送風機用電動機の電流及び電源電圧により負
荷変動を検知し送風機に設けられたフィルタの目づまり
を判断する手段については何も記載されていない。As described in Japanese Patent Application Laid-Open No. 2-215998 of the related art, the external static pressure is detected by a pressure detecting means provided in a blower duct, and input to a blower motor for securing a target air volume. Although a technique of controlling the frequency stepwise has been proposed, nothing is described about a means for detecting a load variation by a current and a power supply voltage of a blower motor and determining a clogging of a filter provided in the blower.
【０００４】[0004]
【発明が解決しようとする課題】一般に送風機内に設け
られたフィルタの目づまりを判断する最も簡単な方法と
して空気調和装置の稼働時間によるものがある。長時間
稼働していれば、それだけフィルタは汚れ目づまり状態
となる。しかし、送風機を設置する環境条件によって
は、同じ時間空気調和装置を稼働してもフィルタの目づ
まり具合に違いを生じてくる。Generally, the simplest method for judging clogging of a filter provided in a blower is by operating time of an air conditioner. The longer it operates, the more the filter becomes dirty. However, depending on the environmental conditions in which the air blower is installed, even if the air conditioner is operated for the same time, the degree of clogging of the filter may differ.
【０００５】本発明の一つの目的は、設置環境に応じた
フィルタの目づまり状態を判断することにある。An object of the present invention is to determine the clogging state of the filter according to the installation environment.
【０００６】本発明の他の目的は、送風機用ダクト等に
圧力検出手段を設けることなく、従来より送風機用電動
機の過電流検出手段として用いられている電流検出手段
を利用してフィルタの目づまり状態を判断することにあ
る。Another object of the present invention is to prevent clogging of a filter by providing current detecting means conventionally used as overcurrent detecting means for a blower motor without providing pressure detecting means in a blower duct or the like. It is to judge the state.
【０００７】[0007]
【課題を解決するための手段】本発明によれば、送風機
用電動機への入力電流を検出するための手段を提供され
る。According to the present invention, there is provided means for detecting an input current to a blower motor.
【０００８】また、本発明によれば、空気調和装置に入
力される電源電圧を検出するための手段が提供される。Further, according to the present invention, means for detecting the power supply voltage inputted to the air conditioner is provided.
【０００９】更に、本発明によれば、検出された電流及
び電圧より、送風機用電動機の負荷変動を送風機内に設
けられたフィルタの目づまりによるものであると判断す
るための制御手段が提供される。Further, according to the present invention, there is provided control means for judging from the detected current and voltage that the load fluctuation of the blower motor is due to the clogging of the filter provided in the blower. It
【００１０】[0010]
【作用】本発明によれば、空気調和装置における送風機
用電動機の入力電流と前記空気調和装置の電源電圧とに
より、送風機の負荷変動を検知し、送風機内に設けられ
たフィルタの目づまりを判断することにより、空気調和
装置の設置環境に応じたフィルタ交換時期を検知するこ
とが可能となる。According to the present invention, the load variation of the blower is detected by the input current of the blower motor in the air conditioner and the power supply voltage of the air conditioner, and the clogging of the filter provided in the blower is determined. As a result, it becomes possible to detect the filter replacement time according to the installation environment of the air conditioner.
【００１１】[0011]
【実施例】図１に示すように、本実施例における装置
は、電源１より電力が供給され、周波数可変装置２を通
じて送風機用電動機３（以下電動機という）の回転数を
制御する。電動機の入力側には、電流検出装置６が設け
られており、検出された電流情報は、制御装置７へと入
力される。又、周波数可変装置２より取り出された電源
電圧情報も同時に制御装置７へと入力される。図２は、
電動機の回転周波数と入力電流との関係を示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, the apparatus in this embodiment is supplied with electric power from a power source 1 and controls a rotation speed of a blower motor 3 (hereinafter referred to as an electric motor) through a frequency variable device 2. A current detection device 6 is provided on the input side of the electric motor, and the detected current information is input to the control device 7. The power supply voltage information extracted from the frequency variable device 2 is also input to the control device 7 at the same time. Figure 2
The relation between the rotation frequency of the electric motor and the input current is shown.
【００１２】以上の構成により、本発明の実施例を説明
する。空気調和装置に入力される電源電圧をＡＣ２００
Ｖ±１０％と考えれば、図２のように直線はＡＣ１８０
Ｖから２２０Ｖまでの間、存在する。例えば電源電圧が
ＡＣ２００Ｖの場合、電動機の回転周波数と電流の関係
は直線Ｂの様に決定される。ここで、実際には測定器の
誤差により斜線部で示す範囲をもつ。即ち、電源電圧２
００Ｖの場合、この斜線部分を外れるような電流変化が
連続的に発生すれば、それをフィルタの目づまりによる
負荷変動と判断し、フィルタ交換を表示させる。以上の
手段を、各電源電圧毎に周波数及び電流特性データとし
て、制御装置内に入力させておくことにより、空気調和
装置の入力電源電圧毎の負荷変動状態を監視することが
可能となる。An embodiment of the present invention having the above construction will be described. The power supply voltage input to the air conditioner is AC200
Considering V ± 10%, the straight line is AC180 as shown in Fig. 2.
It exists between V and 220V. For example, when the power supply voltage is AC200V, the relationship between the rotation frequency of the electric motor and the current is determined as shown by the straight line B. Here, in reality, there is a range shown by the shaded area due to the error of the measuring device. That is, the power supply voltage 2
In the case of 00V, if a current change that deviates from the shaded part occurs continuously, it is determined that the load is changed due to the clogging of the filter, and the filter replacement is displayed. By inputting the above means into the control device as frequency and current characteristic data for each power supply voltage, it becomes possible to monitor the load fluctuation state for each input power supply voltage of the air conditioner.
【００１３】本実施例では、図２のように電源電圧の測
定ポイントをＡ，Ｂ，Ｃの３点で表わしているが、実際
には１８０Ｖから２２０Ｖまでの間、連続的に電源電圧
は存在するため、測定ポイントを多くとることで、負荷
変動検出の精度を向上させる。In this embodiment, the power supply voltage measurement points are represented by three points A, B, and C as shown in FIG. 2, but in reality, the power supply voltage continuously exists between 180V and 220V. Therefore, by increasing the number of measurement points, the accuracy of load fluctuation detection is improved.
【００１４】又、現地の設置条件により、送風機外部に
ダクト等の送風経路を設けるような場合には、その形状
及び長さにより機外静圧に変化を生じる。そのような場
合も、設置時フィルタの目づまりがない状態での電動機
の周波数と電流特性データを試運転により自動的に記憶
させる手段を持たせることで、設置条件に対応した負荷
変動を検出し、フィルタ交換時期を知らせることができ
る。Further, in the case where a ventilation path such as a duct is provided outside the blower due to the local installation conditions, the external static pressure changes depending on the shape and length of the ventilation path. Even in such a case, by providing a means to automatically store the frequency and current characteristic data of the motor in the test run without clogging of the filter at the time of installation, the load fluctuation corresponding to the installation conditions can be detected and the filter You can tell when to replace.
【００１５】[0015]
【発明の効果】本発明によれば、空気調和装置の電源電
圧による送風機用電動機の回転周波数と電流特性データ
をあらかじめ記憶させておくことにより、入力電源電圧
毎の送風機の負荷変動をフィルタの目づまりとして検知
することができる。According to the present invention, the rotation frequency and current characteristic data of the blower motor according to the power supply voltage of the air conditioner are stored in advance so that the load fluctuation of the blower for each input power supply voltage can be detected by the filter. It can be detected as a jam.
【図１】本発明の一実施例である送風装置及び空気調和
装置のブロック図。FIG. 1 is a block diagram of an air blower and an air conditioner according to an embodiment of the present invention.
【図２】送風機用電動機の回転周波数と電流の関係を示
す説明図。FIG. 2 is an explanatory diagram showing a relationship between a rotation frequency of a blower motor and a current.
１…電源、２…周波数可変装置、３…送風機用電動機、
４…フィルタ、５…送風機、６…電源電圧検出装置、７
…電流検出装置、８…制御装置。1 ... Power source, 2 ... Frequency variable device, 3 ... Blower electric motor,
4 ... Filter, 5 ... Blower, 6 ... Power supply voltage detection device, 7
... current detection device, 8 ... control device.
Claims (1)
と、前記多翼ランナを回転させるための電動機及び、そ
の回転数を変化させるための可変周波数手段を設けた空
気調和装置において、送風機用電動機への入力電流を検
出する電流検出手段及び電源電圧検出手段を有し、検出
された電流と電圧により前記送風機用電動機の負荷変動
を検知し、送風機吸込口に設けられたフィルタの目づま
り状態を判断することにより、フィルタ交換サインを表
示させることを特徴とする空気調和装置。1. An air conditioner provided with a blower comprising a multi-blade runner and a casing, an electric motor for rotating the multi-blade runner, and a variable frequency means for changing the number of revolutions of the blower. Has a current detection means and a power supply voltage detection means for detecting the input current of the blower, detects the load fluctuation of the blower motor by the detected current and voltage, and judges the clogging state of the filter provided at the blower suction port. An air conditioner characterized by displaying a filter replacement sign by doing so.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4138394A JPH05332590A (en) | 1992-05-29 | 1992-05-29 | Air conditioning apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4138394A JPH05332590A (en) | 1992-05-29 | 1992-05-29 | Air conditioning apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05332590A true JPH05332590A (en) | 1993-12-14 |
Family
ID=15220924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4138394A Pending JPH05332590A (en) | 1992-05-29 | 1992-05-29 | Air conditioning apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05332590A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6582295B1 (en) * | 1999-06-30 | 2003-06-24 | Valeo Climatisation | Method of detecting clogging of an air filter and ventilation system employing such a method |
| JP2004283484A (en) * | 2003-03-25 | 2004-10-14 | Pentax Corp | Light source device for endoscope |
| EP2199697A1 (en) * | 2008-12-17 | 2010-06-23 | Honeywell International Inc. | Motor current based air circuit obstruction detection |
| EP2792960A1 (en) * | 2013-04-16 | 2014-10-22 | Hamilton Sundstrand Corporation | Method of monitoring a heat exchanger arrangement and heat exchanger monitoring system |
| WO2019187003A1 (en) * | 2018-03-30 | 2019-10-03 | 日本電気株式会社 | State estimation device, method, and program recording medium |
| WO2023189577A1 (en) * | 2022-03-30 | 2023-10-05 | ダイキン工業株式会社 | Fluid transport device, liquid cooling device, refrigeration device, and method for detecting state of fluid transport device |
-
1992
- 1992-05-29 JP JP4138394A patent/JPH05332590A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6582295B1 (en) * | 1999-06-30 | 2003-06-24 | Valeo Climatisation | Method of detecting clogging of an air filter and ventilation system employing such a method |
| JP2004283484A (en) * | 2003-03-25 | 2004-10-14 | Pentax Corp | Light source device for endoscope |
| EP2199697A1 (en) * | 2008-12-17 | 2010-06-23 | Honeywell International Inc. | Motor current based air circuit obstruction detection |
| US8125230B2 (en) | 2008-12-17 | 2012-02-28 | Honeywell International Inc. | Motor current based air circuit obstruction detection |
| US9068759B2 (en) | 2008-12-17 | 2015-06-30 | Honeywell International Inc. | Motor current based air circuit obstruction detection |
| EP2792960A1 (en) * | 2013-04-16 | 2014-10-22 | Hamilton Sundstrand Corporation | Method of monitoring a heat exchanger arrangement and heat exchanger monitoring system |
| US9784508B2 (en) | 2013-04-16 | 2017-10-10 | Hamilton Sundstrand Corporation | Method of monitoring a heat exchanger arrangement and ram air fan in an aircraft to prevent stall conditions |
| WO2019187003A1 (en) * | 2018-03-30 | 2019-10-03 | 日本電気株式会社 | State estimation device, method, and program recording medium |
| US11358086B2 (en) | 2018-03-30 | 2022-06-14 | Nec Corporation | State estimation apparatus, method, and program storage medium |
| WO2023189577A1 (en) * | 2022-03-30 | 2023-10-05 | ダイキン工業株式会社 | Fluid transport device, liquid cooling device, refrigeration device, and method for detecting state of fluid transport device |
| JP2023148997A (en) * | 2022-03-30 | 2023-10-13 | ダイキン工業株式会社 | Fluid transport device, liquid cooling device, refrigeration device, and method for detecting state of fluid transport device |
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