JPH05256293A - Control device for air conditioner - Google Patents

Control device for air conditioner

Info

Publication number
JPH05256293A
JPH05256293A JP4053424A JP5342492A JPH05256293A JP H05256293 A JPH05256293 A JP H05256293A JP 4053424 A JP4053424 A JP 4053424A JP 5342492 A JP5342492 A JP 5342492A JP H05256293 A JPH05256293 A JP H05256293A
Authority
JP
Japan
Prior art keywords
time
rotational speed
rotation speed
speed
triac
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
Application number
JP4053424A
Other languages
Japanese (ja)
Inventor
Katsuaki Takayanagi
勝明 高柳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu General Ltd
Original Assignee
Fujitsu General Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu General Ltd filed Critical Fujitsu General Ltd
Priority to JP4053424A priority Critical patent/JPH05256293A/en
Publication of JPH05256293A publication Critical patent/JPH05256293A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Landscapes

  • Air Conditioning Control Device (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)

Abstract

PURPOSE:To improve a follow-up property relating to a target rotational speed and a riseup at the time of restarting by selecting the initialized off time matched with the target rotational speed at the time of switching a blow air amount of a blower motor, and further correcting the off time in accordance with a difference between the actually measured rotational speed and the target rotational speed. CONSTITUTION:Electric power is supplied to a blower motor 3 through a TRIAC 2 from an AC power supply 1. The TRIAC 2 is driven by a switching signal from a microcomputer 4. Here, the TRIAC 2 is turned on via a phase of predetermined delay (off time) from a point of zero power supply voltage to supply electric power to the motor 3 in the rest of time. On the other hand, an actually measured rotational speed of the motor 3 is detected by a hall element 5 and also to compare this detection value with a target value through a microcomputer 4 thus to adjust a switching signal of the TRIAC 2. Here at the time of switching an air amount of the motor 3, the initialized off time matched with the target rotational speed is selected. The off time is corrected in accordance with a difference between the target rotational speed and the actually measured rotational speed.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、空気調和機の制御装置
に関し、詳しくは室内側送風機の回転数制御に関するも
のである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an air conditioner, and more particularly to control of the rotation speed of an indoor blower.

【0002】[0002]

【従来の技術】従来、空気調和機の室内側送風機の回転
数制御は、図4にフローチャートで示すように、送風機
モータに供給する電源をトライアック等によりスイッチ
ングして、オフ時間を変えることにより印加電圧を変
え、送風機モータの回転数を制御するようにしている。
また、送風機モータにホール素子等からなる回転数検出
回路を内蔵し、送風機モータの実際の回転数を検出して
制御部マイコンに送り、トライアック等によりスイッチ
ングにフィードバックするようにしている。しかしなが
ら、このフィードバック制御の応答速度がおそく、実際
の回転数が目標回転数に達するまでに時間(数秒から十
数秒)がかかり、室内側送風機の風量を変える等の目的
のために目標回転数が変更されると、目標回転数に達す
るまでの時間と到達してからフィードバック制御がかか
るまでの応答の遅れにより、目標回転数を越えた回転数
となる場合があり、一時的に騒音が増加したり、異常音
を発生する等の不具合を生じている。この対策として予
じめ複数の目標回転数に見合うオフ時間を設定して置
き、室内側送風機の風量切り換え時に、所定の目標回転
数に見合うオフ時間で送風機モータを運転し、その状態
でフィードバック制御により所定の目標回転数に安定す
るようにしているが、設定したオフ時間は標準状態の値
であり、送風機モータのバラツキ、室内機の取付状態、
電源電圧、電源周波数、フィルタ等の目詰まり、周囲温
度等により変化するため、充分な対策となっていなかっ
た。
2. Description of the Related Art Conventionally, as shown in the flow chart of FIG. 4, the rotation speed control of an indoor blower of an air conditioner is applied by switching the power supply to a blower motor by a triac or the like and changing the off time. The voltage is changed to control the rotation speed of the blower motor.
Further, the fan motor has a built-in rotation speed detection circuit composed of a hall element or the like, detects the actual rotation speed of the blower motor, sends it to the control unit microcomputer, and feeds it back to switching by a triac or the like. However, the response speed of this feedback control is slow, and it takes time (several seconds to ten and several seconds) until the actual rotation speed reaches the target rotation speed, and the target rotation speed is changed for the purpose of changing the air volume of the indoor blower. If changed, the rotation speed may exceed the target rotation speed due to the delay in reaching the target rotation speed and the delay in the response from when the target rotation speed is reached until feedback control is applied, and noise temporarily increases. Or an abnormal sound is generated. As a countermeasure against this, a preset off time is set and set according to multiple target speeds, and when the air volume of the indoor blower is switched, the blower motor is operated for the off time corresponding to the specified target speed, and feedback control is performed in that state. However, the set off time is the value in the standard state, and the variation of the blower motor, the installation state of the indoor unit,
Since it varies depending on the power supply voltage, power supply frequency, clogging of filters, ambient temperature, etc., it is not a sufficient countermeasure.

【0003】[0003]

【発明が解決しようとする課題】本発明は、上記従来の
問題点に鑑みなされたもので、室内側送風機の風量切り
換え時に、風量に見合う所定の目標回転数に敏速に追従
するとともに、目標回転数に安定するように制御する空
気調和機の制御装置を提供することを目的としている。
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems of the prior art. When the air volume of the indoor blower is switched, it quickly follows a predetermined target rotational speed commensurate with the air volume and the target rotational speed. An object of the present invention is to provide a control device for an air conditioner that controls the air conditioner so as to be stable in number.

【0004】[0004]

【課題を解決するための手段】上記目的を達成するため
に、予じめ上記目標回転数に見合う位相制御のオフ時間
を初期設定し、風量変更等の室内側送風機の回転数変更
時に、初期設定したオフ時間で室内側送風機を運転し、
目標回転数に達した時に初期設定したオフ時間とフィー
ドバックにより得られた実際のオフ時間を比較し、その
結果を補正値として記憶し、次回回転数変更時に補正値
を初期設定したオフ時間に加え、オフ時間を設定するよ
うにした。
In order to achieve the above object, the off time of the phase control corresponding to the target rotational speed is initially set in advance, and the initial value is set when the rotational speed of the indoor blower is changed such as changing the air volume. Operate the indoor blower at the set off time,
When the target speed is reached, the initial OFF time is compared with the actual OFF time obtained by feedback, the result is stored as a correction value, and the correction value is added to the default OFF time at the next speed change. , Set off time.

【0005】[0005]

【作用】上記の構成によれば、予じめ目標回転数に見合
う位相制御のオフ時間の値をテーブルとして初期設定
し、風量変更等の室内側送風機の回転数変更時に目標回
転数に見合うオフ時間を選択して位相制御を行い、フィ
ードバック制御により目標回転数に安定させるととも
に、フィードバックにより得られたオフ時間と初期設定
したオフ時間を比較し、その結果を補正値として記憶
し、次回回転数変更時に初期設定オフ時間に補正値を加
えてオフ時間のテーブルを更新することにより、送風機
モータのバラツキや室内機の取付状態、電源の状態等の
変動要因を取り込んだ目標回転数に見合うオフ時間を付
与することができる。
According to the above construction, the value of the OFF time of the phase control corresponding to the preliminarily set target rotation speed is initially set as a table, and the OFF speed corresponding to the target rotation speed is changed when changing the rotation speed of the indoor blower such as changing the air volume. Phase control is performed by selecting a time, and feedback control is used to stabilize the target speed, and the OFF time obtained by feedback is compared with the initially set OFF time, and the result is stored as a correction value and the next speed is set. At the time of change, by adding a correction value to the default OFF time and updating the OFF time table, the OFF time corresponding to the target rotation speed that incorporates fluctuation factors such as fan motor variation, indoor unit installation status, power supply status, etc. Can be given.

【0006】[0006]

【実施例】本発明の実施例を添付図面を参照して詳細に
説明する。図1は本発明の詳細を示すブロック図で、交
流電源1からトライアック2を介して送風機モータ3に
電力が供給され、トライアック2は制御マイコン4から
のスイッチング信号により駆動され、図2に示すように
電源電圧ゼロの点からある定まった遅れ位相α(オフ時
間Tc )を経てターンオンし、残り時間の間電力を送風
機モータ3に供給して送風機モータ3を駆動し、電源の
極性が反転すると同様に遅れ位相αを経てターンオンす
ることにより、交流電圧波形を送風機モータ3に供給し
ている。一方、送風機モータ3には、回転数を検出する
ホール素子5が内蔵され、送風機モータ3の実際の回転
数を検出し制御マイコン4に実際の回転数をフィードバ
ックし、制御マイコン4により設定回転数と比較してト
ライアック2のスイッチング信号を調整して、送風機モ
ータ3が設定回転数で運転するようにしている。
Embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a block diagram showing the details of the present invention, in which electric power is supplied from an AC power source 1 to a blower motor 3 via a triac 2, and the triac 2 is driven by a switching signal from a control microcomputer 4, as shown in FIG. After a certain delay phase α (off time Tc) from the point of zero power supply voltage, the power is supplied to the blower motor 3 for the remaining time to drive the blower motor 3 and the polarity of the power supply is reversed. By turning on after a delay phase α, the AC voltage waveform is supplied to the blower motor 3. On the other hand, the blower motor 3 has a hall element 5 for detecting the number of rotations therein, detects the actual number of rotations of the blower motor 3, feeds back the actual number of rotations to the control microcomputer 4, and the control microcomputer 4 sets the number of rotations. In comparison with the above, the switching signal of the triac 2 is adjusted so that the blower motor 3 operates at the set rotation speed.

【0007】室内の空調条件により送風機モータ3の風
量を変化させる場合に、制御マイコン4よりトライアッ
ク2のオフ時間を変更するスイッチング信号を送り、ト
ライアック2を駆動して送風機モータ3の回転数を変
え、所定の風量になるようにしている。ホール素子5等
からなる回転数検出のフィードバック系の応答速度が遅
く、応答された回転数が目標の回転数に達した時には、
送風機モータ3の実際の回転数は目標の回転数を越える
場合があり、この対応として予じめ送風機モータ3の基
本的な回転数(例えば高速、中速、低速)に対するオフ
時間Tc を求めて、制御部マイコン4にテーブル化して
記憶し、送風機モータ3の風量変更時に所定のオフ時間
Tc でトライアック2を駆動することにより、回転数の
立ち上がりを早めるようにしている。さらに、予じめ風
量変更のため設定された回転数Ra とフィードバック系
を通じて検出された実際の回転数Rn とを比較し、回転
数の差と対応するオフ時間の差からオフ時間の補正値T
x を求めて制御部マイコン4に記憶し、設定された回転
数Ra と実際の回転数Rn との差が生じた時に所定のオ
フ時間Tc を補正することにより、運転開始時の回転数
の立ち上がりを早めるようにしている。
When the air volume of the blower motor 3 is changed according to the indoor air conditioning conditions, the control microcomputer 4 sends a switching signal for changing the off time of the triac 2 to drive the triac 2 to change the rotation speed of the blower motor 3. , So that a predetermined air volume is achieved. When the response speed of the feedback system for detecting the rotation speed composed of the hall element 5 etc. is slow and the number of rotations responded reaches the target rotation speed,
The actual rotation speed of the blower motor 3 may exceed the target rotation speed, and as a countermeasure for this, the off time Tc for the basic rotation speed (for example, high speed, medium speed, low speed) of the blower motor 3 is calculated in advance. The table is stored in the control unit microcomputer 4 as a table, and when the air volume of the blower motor 3 is changed, the triac 2 is driven for a predetermined off time Tc to accelerate the rise of the rotation speed. Further, the rotational speed Ra set for changing the pre-determined air volume is compared with the actual rotational speed Rn detected through the feedback system, and the off-time correction value T is calculated from the difference between the rotational speeds and the corresponding off-time.
By obtaining x and storing it in the control unit microcomputer 4 and correcting the predetermined off time Tc when a difference between the set rotational speed Ra and the actual rotational speed Rn occurs, the rise of the rotational speed at the start of operation I try to accelerate.

【0008】図3は本発明の詳細を示すフローチャート
で、送風機モータ3の風量を切換える時、制御部マイコ
ン4は風量切換えに対応する回転数Ra を設定し(2
1)、予じめ記憶された回転数に対するオフ時間Tc の
テーブルより回転数Ra に見合うオフ時間Tc を設定し
て(22)送風機モータ3を駆動し、その回転数Rn を検
出する(23)。この回転数Rn と設定された回転数Ra
を比較し(24)、回転数Rn >回転数Ra の場合はオフ
時間Tc より補正値Tx を減じ(25)、回転数Rn <回
転数Ra の場合はオフ時間Tc に補正値Tx を加え(2
6)、再度回転数Rn を検出するようにして回転数Rn
が設定値Ra に一致した状態で(27)、そのオフ時間を
記憶されたテーブルに取り込んで更新し、以後更新され
たテーブルによりオフ時間Tc を設定するようにしてい
る。
FIG. 3 is a flow chart showing the details of the present invention. When the air volume of the blower motor 3 is switched, the control unit microcomputer 4 sets the rotation speed Ra corresponding to the air volume switching (2
1) The off time Tc corresponding to the rotation speed Ra is set from the table of the off time Tc corresponding to the previously stored rotation speed (22), the blower motor 3 is driven, and the rotation speed Rn is detected (23). .. This rotational speed Rn and the set rotational speed Ra
(24), if the rotational speed Rn> the rotational speed Ra, the correction value Tx is subtracted from the off time Tc (25), and if the rotational speed Rn <the rotational speed Ra, the correction value Tx is added to the off time Tc ( 2
6), the rotation speed Rn is detected again and the rotation speed Rn is detected.
(27), the off time is fetched in the stored table and updated, and the off time Tc is set by the updated table thereafter.

【0009】[0009]

【発明の効果】以上のように本発明においては、送風機
モータの風量切換え時に、予じめ設定したテーブルから
目標の回転数Ra に見合うオフ時間Tc を選択し送風機
モータを駆動するとともに、検出された実際の回転数R
n との差からオフ時間Tc を補正することにより、次回
の運転開始時に回転数の立ち上がりを早めることがで
き、また補正されたオフ時間Tc をテーブルに取り込
み、テーブルを更新することにより、以後の風量切換え
時に回転数の立ち上がりを早め、風量変更に敏速に対応
することができる。
As described above, according to the present invention, when the air volume of the blower motor is changed, the off time Tc corresponding to the target rotation speed Ra is selected from the preset table, the blower motor is driven and detected. Actual rotation speed R
By correcting the off-time Tc from the difference with n, the rise of the rotation speed can be accelerated at the start of the next operation, and the corrected off-time Tc is stored in the table to update the table. When the air volume is switched, the rotation speed rises faster, and the air volume can be quickly changed.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の詳細を示すブロック図である。FIG. 1 is a block diagram showing details of the present invention.

【図2】送風機モータに印加される電源電圧波形を示す
図である。
FIG. 2 is a diagram showing a power supply voltage waveform applied to a blower motor.

【図3】本発明の詳細を示すフローチャートである。FIG. 3 is a flow chart showing details of the present invention.

【図4】従来のフローチャートである。FIG. 4 is a conventional flowchart.

【符号の説明】[Explanation of symbols]

1 交流電源 2 トライアック 3 送風機モータ 4 制御マイコン 5 ホール素子 1 AC power supply 2 TRIAC 3 Blower motor 4 Control microcomputer 5 Hall element

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 室内機の風量変更等により室内側送風機
の回転数を位相制御し、送風機モータに内蔵したホール
素子等からなる回転数検出回路により回転数を検出し、
検出した回転数をフィードバックして所定の目標回転数
に安定するように制御してなる空気調和機の制御装置に
おいて、予じめ上記目標回転数に見合う位相制御のオフ
時間を初期設定し、風量変更等の室内側送風機の回転数
変更時に、初期設定したオフ時間で室内側送風機を運転
し、目標回転数に達した時に初期設定したオフ時間とフ
ィードバックにより得られた実際のオフ時間を比較し、
その結果を補正値として記憶し、次回回転数変更時に補
正値を初期設定したオフ時間に加え、オフ時間を設定す
るようにしてなることを特徴とする空気調和機の制御装
置。
1. The rotation speed of an indoor blower is phase-controlled by changing the air volume of the indoor unit, and the rotation speed is detected by a rotation speed detection circuit including a hall element incorporated in a blower motor.
In the control device of the air conditioner that controls the detected rotational speed by feeding it back to stabilize it at a predetermined target rotational speed, the off time of the phase control that matches the target rotational speed is set in advance, and the air flow rate is set. When changing the rotation speed of the indoor blower due to changes, etc., operate the indoor blower with the initially set off time, and when the target speed is reached, compare the initially set off time with the actual off time obtained by feedback. ,
An air conditioner control device, wherein the result is stored as a correction value, and the off time is set in addition to the initially set off time when the rotational speed is changed next time.
JP4053424A 1992-03-12 1992-03-12 Control device for air conditioner Pending JPH05256293A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4053424A JPH05256293A (en) 1992-03-12 1992-03-12 Control device for air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4053424A JPH05256293A (en) 1992-03-12 1992-03-12 Control device for air conditioner

Publications (1)

Publication Number Publication Date
JPH05256293A true JPH05256293A (en) 1993-10-05

Family

ID=12942460

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4053424A Pending JPH05256293A (en) 1992-03-12 1992-03-12 Control device for air conditioner

Country Status (1)

Country Link
JP (1) JPH05256293A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112268405A (en) * 2020-10-23 2021-01-26 Tcl家用电器(合肥)有限公司 Control method and device of refrigeration fan, refrigeration equipment and storage medium
CN114112464A (en) * 2021-11-15 2022-03-01 宁波奥克斯电气股份有限公司 Indoor unit testing method and indoor unit testing system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07507366A (en) * 1992-06-23 1995-08-10 ファオ・カン・ラスムゼン・インドゥストリー・アクティーゼルスカブ Sealing devices for windows, especially roof windows

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07507366A (en) * 1992-06-23 1995-08-10 ファオ・カン・ラスムゼン・インドゥストリー・アクティーゼルスカブ Sealing devices for windows, especially roof windows

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112268405A (en) * 2020-10-23 2021-01-26 Tcl家用电器(合肥)有限公司 Control method and device of refrigeration fan, refrigeration equipment and storage medium
CN114112464A (en) * 2021-11-15 2022-03-01 宁波奥克斯电气股份有限公司 Indoor unit testing method and indoor unit testing system
CN114112464B (en) * 2021-11-15 2024-02-02 宁波奥克斯电气股份有限公司 Indoor unit testing method and indoor unit testing system

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