JP2008082643A - Ventilating device - Google Patents

Ventilating device Download PDF

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JP2008082643A
JP2008082643A JP2006264557A JP2006264557A JP2008082643A JP 2008082643 A JP2008082643 A JP 2008082643A JP 2006264557 A JP2006264557 A JP 2006264557A JP 2006264557 A JP2006264557 A JP 2006264557A JP 2008082643 A JP2008082643 A JP 2008082643A
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motor
ventilator
air volume
command voltage
ventilating device
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Naoto Ariyoshi
直人 有吉
Kanefusa Oshima
兼芳 大嶋
Yuhei Naruse
裕平 成瀬
Yoshinori Fujii
嘉範 藤井
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilating device of a control air volume controlled type with a blower to be driven by a DC motor, having simple construction for avoiding the worsening of air volume accuracy due to the dispersion of the DC motor. <P>SOLUTION: The ventilating device having control functional capability of controlling an air volume to be constant comprises the blower to be driven by the DC motor 1. The DC motor 1 is driven in accordance with a control function by a control circuit 2 of the ventilating device to control the air volume to be constant. The control function is a function which is previously acquired by a selective reference ventilating device of the same type as the ventilating device. A dispersion component of the DC motor 1 for the blower of the ventilating device is input as a correction value to the control function. The correction value is found by measuring a command voltage value with the DC motor for the reference ventilating device having a stable and selective rotating speed and calculating a difference between the command voltage value and a command voltage value with the DC motor 1 for the ventilating device having stable rotating speed the same as that of the DC motor for the reference ventilating device. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、ＤＣモーターで駆動する送風機を備えた風量一定制御方式の換気装置に関するものである。   The present invention relates to a ventilation device of a constant air volume control system provided with a blower driven by a DC motor.

風量を一定に制御する換気装置では、送風機を駆動するモーターがＤＣモーターで構成されているものが多い。この種の換気装置にはファン及びＤＣモーター等のバラツキを補正して風量一定運転を実現したものがある（例えば、特許文献１及び特許文献２）。   In many ventilators that control the air volume to a constant level, the motor that drives the blower is often a DC motor. Some types of this type of ventilator implement a constant air volume operation by correcting variations of fans and DC motors (for example, Patent Document 1 and Patent Document 2).

特開２００５−３０００８９号公報JP 2005-300089 A 特開昭５７−１１８９１６号公報JP 57-118916 A

特許文献１に示された技術は、排気風路を全閉するダンパや圧力検知手段を用い、標準Ｐ（静圧）−Ｑ（風量）データと標準Ｎ（回転数）−Ｑ（風量）データを補正して補正データで風量を制御するようにしている。しかし、換気装置に排気風路を全閉するダンパが必要であり、圧力検知手段等、換気装置の構成を随分複雑なものにしている。また、ＤＣモーターの電圧、電流、回転数等を検知して、制御回路からＤＣモーターへの指令にフィードバックをかける方法も採られているが、ＤＣモーター自体のバラツキ等が風量一定制御に影響を及ぼし、風量精度が悪くなっている。   The technique disclosed in Patent Document 1 uses a damper or pressure detecting means for fully closing the exhaust air passage, and uses standard P (static pressure) -Q (air volume) data and standard N (rotation speed) -Q (air volume) data. And the air volume is controlled by the correction data. However, a damper that fully closes the exhaust air passage is required for the ventilator, which complicates the configuration of the ventilator, such as the pressure detection means, to a certain extent. In addition, there is a method of detecting the voltage, current, rotation speed, etc. of the DC motor and feeding back the command from the control circuit to the DC motor. However, variations in the DC motor itself have an effect on the constant air flow control. The airflow accuracy is worse.

本発明は、上記した問題点を解決するためになされたものであり、その課題とするところは、簡単な構成でＤＣモーターのバラツキによる風量精度の悪化を回避できる、ＤＣモーターで駆動する送風機を備えた風量一定制御方式の換気装置を得ることである。   The present invention has been made to solve the above-described problems, and the problem is that a blower driven by a DC motor that can avoid deterioration in air flow accuracy due to variations in the DC motor with a simple configuration. It is to obtain a ventilation device with a constant air volume control system.

上記課題を解決するために本発明は、ＤＣモーターで駆動する送風機を備え、風量を一定に制御する制御機能を持つ換気装置について、換気装置の制御回路によって制御関数に基づいてＤＣモーターを駆動し、定風量制御するようにする。その制御関数に関しては、この換気装置と同じ任意の基準換気装置によって予め取得された関数であり、この制御関数に当該換気装置の送風機のＤＣモーターのバラツキ分を補正値として取入れる。補正値は、前記基準換気装置のＤＣモーターが安定した任意の回転数のときの指令電圧値を測定し、この指令電圧値と、当該換気装置のＤＣモーターが基準換気装置のＤＣモーターと同じ安定した回転数のときの指令電圧値との差を算出して求めたものである。   In order to solve the above-described problems, the present invention provides a ventilator that has a blower driven by a DC motor and has a control function for controlling the air volume at a constant level. The ventilator control circuit drives the DC motor based on a control function. The constant air volume is controlled. The control function is a function acquired in advance by any reference ventilation device that is the same as the ventilation device, and the variation of the DC motor of the blower of the ventilation device is taken into the control function as a correction value. The correction value measures the command voltage value when the DC motor of the reference ventilator is at a stable arbitrary rotation speed, and this command voltage value and the DC motor of the ventilator are the same stability as the DC motor of the reference ventilator. It is obtained by calculating the difference from the command voltage value at the rotation speed.

本発明によれば、制御回路に取込む風量一定制御するための制御関数を、当該換気装置と同じ任意の基準換気装置によって予め取得された関数とし、基準換気装置のＤＣモーターが安定した任意の回転数のときの指令電圧値を測定し、この指令電圧値と、当該換気装置のＤＣモーターが基準換気装置のＤＣモーターと同じ安定した回転数のときの指令電圧値との差を算出して補正値として取込み風量一定制御するため、当該換気装置のＤＣモーターのバラツキによって生じる風量精度の悪化を簡単かつ容易に回避することができる。   According to the present invention, the control function for constant control of the air volume taken into the control circuit is a function acquired in advance by any reference ventilation device that is the same as the ventilation device, and the DC motor of the reference ventilation device is stable. Measure the command voltage value at the rotational speed, and calculate the difference between this command voltage value and the command voltage value when the DC motor of the ventilator has the same stable rotational speed as the DC motor of the reference ventilator. Since the intake air volume is controlled constant as the correction value, it is possible to easily and easily avoid the deterioration of the air volume accuracy caused by the variation of the DC motor of the ventilation device.

本発明は、ＤＣモーターで駆動する送風機を備え、風量を一定に制御する制御機能を持つ換気装置について、換気装置の制御回路によって制御関数に基づいてＤＣモーターを駆動し、風量一定制御するようにする。制御回路の制御動作の基となる制御関数に関しては、この換気装置と同じ任意の基準換気装置によって予め取得された関数である。この制御関数に当該換気装置の送風機のＤＣモーターのバラツキ分を補正値として取入れる。補正値は、基準換気装置のＤＣモーターが安定した任意の回転数（換気装置の設置状態や周辺の環境等の影響を受け難い低回転数）のときの指令電圧値を測定し、この指令電圧値と、当該換気装置のＤＣモーターが基準換気装置のＤＣモーターと同じ安定した回転数のときの指令電圧値との差を算出して求めたものである。   The present invention includes a blower that is driven by a DC motor and has a control function for controlling the air volume at a constant level. The ventilator control circuit drives the DC motor based on a control function to control the air volume at a constant level. To do. The control function that is the basis of the control operation of the control circuit is a function that is acquired in advance by any reference ventilation device that is the same as this ventilation device. In this control function, the variation of the DC motor of the blower of the ventilation device is taken as a correction value. For the correction value, measure the command voltage value when the DC motor of the reference ventilator is at a stable and arbitrary rotation speed (low rotation speed that is not easily affected by the installation status of the ventilator or the surrounding environment). It is obtained by calculating the difference between the value and the command voltage value when the DC motor of the ventilator has the same stable rotation speed as the DC motor of the reference ventilator.

換気装置に最初に電源を投入したときに、基準となる指令電圧でＤＣモーターの動作を開始させる。ＤＣモーターの回転数が、基準換気装置のＤＣモーターの任意の回転数と同様の回転数で安定して動作するようになるまでＤＣモーターへの指令電圧を調整し、このときの指令電圧を測定する。基準換気装置のＤＣモーターが安定した任意の回転数のときの指令電圧値と、当該換気装置のＤＣモーターが基準換気装置のＤＣモーターと同じ安定した回転数のときの指令電圧値との差を算出して補正値として取込み、風量一定制御する。ＤＣモーターのバラツキは、指令電圧により調整可能であることから、上記補正値をＤＣモーターのバラツキを補正するための補正量として適用することができる。この補正値を記憶素子に記憶させておくことにより、電源投入時にのみ補正処理を実施すればよく、当該換気装置のＤＣモーターのバラツキによって生じる風量一定制御の風量精度の悪化を簡単かつ容易に回避することができる。   When the power is first turned on to the ventilator, the operation of the DC motor is started with a reference command voltage as a reference. Adjust the command voltage to the DC motor until the rotation speed of the DC motor is stable at the same number of rotations as the DC motor of the reference ventilation device, and measure the command voltage at this time To do. The difference between the command voltage value when the DC motor of the reference ventilator is at a stable arbitrary speed and the command voltage value when the DC motor of the ventilator is at the same stable speed as the DC motor of the reference ventilator Calculated and taken in as a correction value, and controlled to keep air volume constant. Since the variation of the DC motor can be adjusted by the command voltage, the correction value can be applied as a correction amount for correcting the variation of the DC motor. By storing this correction value in the storage element, it is only necessary to perform the correction process when the power is turned on, and it is easy and easy to avoid the deterioration of the air volume accuracy of the constant air volume control caused by the variation of the DC motor of the ventilation device. can do.

実施の形態１．
図１は、本実施の形態の換気装置を示す斜視図、図２は、換気装置の制御回路のブロック構成図、図３は、補正処理のフローチャート、図４は、ＤＣモーターの回転数と、指令電圧の変動範囲の関係をグラフで示す説明図である。 Embodiment 1 FIG.
FIG. 1 is a perspective view showing a ventilator according to the present embodiment, FIG. 2 is a block diagram of a control circuit of the ventilator, FIG. 3 is a flowchart of correction processing, and FIG. It is explanatory drawing which shows the relationship of the fluctuation range of command voltage with a graph.

本実施の形態の換気装置は、ＤＣモーター１で駆動する送風機を備え、風量を一定に制御する制御機能を持つ換気装置で、マイクロコンピユータを含む制御回路２によって制御関数に基づいてＤＣモーター１を駆動し、風量一定制御するように構成されている。換気装置には図１に示すようにダクト接続の可能な排気口３と吸込み口４が送風機の吹出し側と吸込み側にそれぞれ設けられている。制御回路２は、図２に示すようにＤＣモーター１の回転数を検出する回転数検出回路５、モータ指令電圧を生成しＤＣモーター１に出力する指令電圧生成回路６、風量を設定する風量設定手段７、記憶素子８を備えている。制御回路２の制御動作の基となる制御関数に関しては、この換気装置と同種の任意の基準換気装置（図示しない）によって予め取得された関数である。   The ventilator according to the present embodiment includes a blower driven by a DC motor 1 and has a control function for controlling the air volume at a constant level. The ventilator is controlled by a control circuit 2 including a micro computer based on a control function. It is configured to drive and to control the air volume constant. As shown in FIG. 1, the ventilator is provided with an exhaust port 3 and a suction port 4 that can be connected to a duct, on the blower side and the suction side of the blower, respectively. As shown in FIG. 2, the control circuit 2 includes a rotation speed detection circuit 5 that detects the rotation speed of the DC motor 1, a command voltage generation circuit 6 that generates a motor command voltage and outputs it to the DC motor 1, and an air volume setting that sets an air volume. Means 7 and storage element 8 are provided. The control function that is the basis of the control operation of the control circuit 2 is a function that is acquired in advance by an arbitrary reference ventilation device (not shown) of the same type as this ventilation device.

当該換気装置が運転する前に、制御回路２の制御関数に送風機のＤＣモーター１のバラツキ分を補正値として取入れる処理をする（図３参照）。補正値は、基準換気装置のＤＣモーターが安定した任意の回転数のときの指令電圧値Ｖｓｂを測定し、この指令電圧値Ｖｓｂと、当該換気装置のＤＣモーター１が基準換気装置のＤＣモーターと同じ安定した任意の回転数のときの指令電圧値Ｖｓとの差を算出して求めたものである。任意の回転数には、換気装置に接続されるダクト等、設置状態や周辺の環境等の影響を受け難い低回転数が選択される。例えば、ＤＣモーター１が毎分４００回転〜毎分２０００回転の間で動作可能な換気装置であれば、ＤＣモーター１のバラツキを補正する回転数としては、毎分５００回転程度が良い。   Before the ventilation device is operated, a process for incorporating the variation of the DC motor 1 of the blower into the control function of the control circuit 2 as a correction value (see FIG. 3). The correction value is obtained by measuring the command voltage value Vsb when the DC motor of the reference ventilator is at a stable arbitrary rotation speed, and the command voltage value Vsb and the DC motor 1 of the ventilator are connected to the DC motor of the reference ventilator. This is obtained by calculating the difference from the command voltage value Vs at the same stable arbitrary rotational speed. As the arbitrary number of rotations, a low number of rotations that are not easily affected by the installation state, the surrounding environment, and the like, such as a duct connected to the ventilation device, is selected. For example, if the DC motor 1 is a ventilator capable of operating between 400 revolutions per minute and 2000 revolutions per minute, the number of revolutions for correcting variations in the DC motor 1 is preferably about 500 revolutions per minute.

換気装置に最初に電源を投入したときに、基準となる指令電圧でＤＣモーター１の動作を開始させる。ＤＣモーター１の回転数が、基準換気装置のＤＣモーターの毎分５００回転の回転数と同様の回転数で安定して動作するようになるまでＤＣモーター１への指令電圧を調整し、このときの指令電圧値Ｖｓを測定する。基準換気装置のＤＣモーターが安定した毎分５００回転の回転数のときの指令電圧値Ｖｓｂと、当該換気装置のＤＣモーター１が基準換気装置のＤＣモーターと同じ安定した毎分５００回転の回転数のときの指令電圧値Ｖｓとの差（Ｖｓ−Ｖｓｂ）を算出して補正値Ｖｓ（ｏｆｆｓｅｔ）として取込み、風量一定制御する。   When the power is first turned on to the ventilator, the operation of the DC motor 1 is started at a reference command voltage. At this time, the command voltage to the DC motor 1 is adjusted until the rotational speed of the DC motor 1 is stably operated at a rotational speed similar to the rotational speed of 500 minutes per minute of the DC motor of the reference ventilation device. The command voltage value Vs is measured. The command voltage value Vsb when the DC motor of the reference ventilator is stable at 500 rpm, and the DC motor 1 of the ventilator is the same as the DC motor of the reference ventilator at 500 rpm. The difference (Vs−Vsb) from the command voltage value Vs at this time is calculated and taken in as a correction value Vs (offset), and the air volume is controlled to be constant.

ＤＣモーター１のバラツキは、指令電圧により調整可能であることから、上記補正値Ｖｓ（ｏｆｆｓｅｔ）をＤＣモーター１のバラツキを補正するための補正量として適用することができる。この補正値Ｖｓ（ｏｆｆｓｅｔ）を記憶素子８に記憶させておくことにより、電源投入時にのみ補正処理を実施すればよく、当該換気装置のＤＣモーター１のバラツキによって生じる風量一定制御の風量精度の悪化を簡単かつ容易に回避することができる。なお、この補正処理のフローは図３に示したとおりである。また、任意の回転数の設定には、換気装置に接続されるダクト等、設置状態や周辺の環境等の影響を受け難く、指令電圧値の変動範囲の少ない図４に示すような低回転数が選択される。ここでは、ＤＣモーターが毎分４００回転〜毎分２０００回転の間で動作可能な換気装置で、ＤＣモーター1のバラツキを補正する回転数としては、毎分５００回転が選択される。   Since the variation of the DC motor 1 can be adjusted by the command voltage, the correction value Vs (offset) can be applied as a correction amount for correcting the variation of the DC motor 1. By storing the correction value Vs (offset) in the storage element 8, the correction process may be performed only when the power is turned on, and the air volume accuracy of the constant air volume control caused by the variation in the DC motor 1 of the ventilation device is deteriorated. Can be easily and easily avoided. The flow of this correction process is as shown in FIG. In addition, in setting an arbitrary number of rotations, a low number of rotations such as a duct connected to a ventilator, which is not easily affected by the installation state and the surrounding environment, etc. and has a small fluctuation range of the command voltage value as shown in FIG. Is selected. Here, the DC motor is a ventilator capable of operating between 400 revolutions per minute and 2000 revolutions per minute, and 500 revolutions per minute is selected as the number of revolutions for correcting the variation of the DC motor 1.

換気装置を示す斜視図である。（実施の形態１）It is a perspective view which shows a ventilation apparatus. (Embodiment 1) 換気装置の制御回路のブロック構成図である。（実施の形態１）It is a block block diagram of the control circuit of a ventilation apparatus. (Embodiment 1) 補正処理のフローチャートである。（実施の形態１）It is a flowchart of a correction process. (Embodiment 1) ＤＣモーターの回転数と、指令電圧の変動範囲の関係をグラフで示す説明図である。（実施の形態１）It is explanatory drawing which shows the relationship between the rotation speed of a DC motor, and the fluctuation range of command voltage with a graph. (Embodiment 1)

符号の説明Explanation of symbols

１ ＤＣモーター、 ２ 制御回路、 ５ 回転数検出回路、 ６ 指令電圧生成回路、 ８ 記憶素子。   DESCRIPTION OF SYMBOLS 1 DC motor, 2 Control circuit, 5 Rotational speed detection circuit, 6 Command voltage generation circuit, 8 Memory element.

Claims (3)

ＤＣモーターで駆動する送風機を備え、風量を一定に制御する制御機能を持つ風量一定制御方式の換気装置であって、その換気装置の制御回路によって制御関数に基づいて前記ＤＣモーターを駆動し、風量一定制御するようにするとともに、その制御関数を、この換気装置と同じ任意の基準換気装置によって予め取得された関数とし、この制御関数に当該換気装置の送風機の前記ＤＣモーターのバラツキ分を補正値として取入れて制御するようにし、この補正値は、前記基準換気装置のＤＣモーターが設置状態や周辺の環境等の影響を受け難い任意の低回転数のときの指令電圧値を測定し、この指令電圧値と、当該換気装置の前記ＤＣモーターが前記基準換気装置のＤＣモーターと同じ回転数で安定したときの指令電圧値との差として設定した換気装置。   A ventilator with a constant air volume control system having a blower driven by a DC motor and having a control function for controlling the air volume to a constant level, wherein the DC motor is driven based on a control function by a control circuit of the ventilator. The control function is assumed to be a function acquired in advance by an arbitrary reference ventilator that is the same as the ventilator, and a correction value for the variation of the DC motor of the blower of the ventilator is added to the control function. This correction value is obtained by measuring a command voltage value when the DC motor of the reference ventilator is at an arbitrary low rotation speed that is not easily affected by the installation state or the surrounding environment. Set as the difference between the voltage value and the command voltage value when the DC motor of the ventilator stabilizes at the same rotational speed as the DC motor of the reference ventilator. Ventilation equipment. 請求項１に記載の換気装置であって、任意の低回転数の値を毎分５００回転前後とした換気装置。   The ventilator according to claim 1, wherein the value of an arbitrary low rotation speed is about 500 rotations per minute. 請求項１又は請求項２のいずれかに記載の換気装置であって、制御回路に補正値を記憶させて随意に読出すことができるように記憶素子を設けた換気装置。   3. The ventilation apparatus according to claim 1, wherein a storage element is provided so that a correction value can be stored in a control circuit and read out arbitrarily.
JP2006264557A 2006-09-28 2006-09-28 Ventilating device Pending JP2008082643A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101143366B1 (en) 2010-04-12 2012-05-22 영 춘 정 Constant airflow control of a ventilation system
US9228751B2 (en) 2011-03-31 2016-01-05 Daikin Industries, Ltd. Humidity controlling ventilator
WO2016065874A1 (en) * 2014-10-29 2016-05-06 中山大洋电机股份有限公司 Method for controlling constant air volume of electrical device with air exhaust or air supply function
CN110657476A (en) * 2019-09-30 2020-01-07 佛山市顺德区美的洗涤电器制造有限公司 Estimation method of air duct parameters of range hood and range hood

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11264598A (en) * 1998-03-16 1999-09-28 Daikin Ind Ltd Fan controller for air conditioner
JP2004129383A (en) * 2002-10-02 2004-04-22 Matsushita Ecology Systems Co Ltd Fan motor and electrical apparatus equipped with the fan motor
JP2005300089A (en) * 2004-04-15 2005-10-27 Matsushita Electric Ind Co Ltd Ventilator with air quantity correction function

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11264598A (en) * 1998-03-16 1999-09-28 Daikin Ind Ltd Fan controller for air conditioner
JP2004129383A (en) * 2002-10-02 2004-04-22 Matsushita Ecology Systems Co Ltd Fan motor and electrical apparatus equipped with the fan motor
JP2005300089A (en) * 2004-04-15 2005-10-27 Matsushita Electric Ind Co Ltd Ventilator with air quantity correction function

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101143366B1 (en) 2010-04-12 2012-05-22 영 춘 정 Constant airflow control of a ventilation system
US9228751B2 (en) 2011-03-31 2016-01-05 Daikin Industries, Ltd. Humidity controlling ventilator
WO2016065874A1 (en) * 2014-10-29 2016-05-06 中山大洋电机股份有限公司 Method for controlling constant air volume of electrical device with air exhaust or air supply function
US10539939B2 (en) 2014-10-29 2020-01-21 Zhongshan Broad-Ocean Motor Co., Ltd. Method for controlling constant air volume of electric device adapted to exhaust or supply air
CN110657476A (en) * 2019-09-30 2020-01-07 佛山市顺德区美的洗涤电器制造有限公司 Estimation method of air duct parameters of range hood and range hood

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