JPH0612127A - Flow rate controller - Google Patents
Flow rate controllerInfo
- Publication number
- JPH0612127A JPH0612127A JP16885892A JP16885892A JPH0612127A JP H0612127 A JPH0612127 A JP H0612127A JP 16885892 A JP16885892 A JP 16885892A JP 16885892 A JP16885892 A JP 16885892A JP H0612127 A JPH0612127 A JP H0612127A
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- flow
- increase
- decrease
- constant
- 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.)
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- Electrically Driven Valve-Operating Means (AREA)
- Flow Control (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、浴室や洗面あるいは台
所等で湯・水の出し止め、および所望の流量をうる給湯
流量制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply flow rate control device for preventing hot water from flowing out in a bathroom, washbasin, kitchen or the like, and for obtaining a desired flow rate.
【０００２】[0002]
【従来の技術】従来この種の給湯装置に関し、例えば図
４に示すようなものがあった。2. Description of the Related Art Conventionally, there has been a hot water supply apparatus of this type as shown in FIG.
【０００３】ボデー１に流路入口２と流路出口３との間
に弁座４を設け、弁体５に連結された弁軸６と弁体５を
付勢するばね７を設け、弁軸６のねじ部８と回転直線変
換ネジ９と、弁軸６をギヤー１０およびギヤー１１を介
して回転駆動する直流モータ１２と、流量センサ１３と
流量演算部１４と、流量演算部１４からの流量信号と設
定流量との差に応じて直流モータ１２の電圧を制御する
フィードバック制御部１５と、ギヤー１１と一体のカム
１６と位置検出器１７とで構成される。そして、図５は
前記フィードバック制御部１５の特性であり、流量セン
サ１３の流量信号を流量演算部１４が演算し、この流量
信号と設定流量の差である流量誤差に比例した電圧で直
流モータ１２を駆動し、弁体５を開あるいは閉方向に調
節して流量信号が設定流量にほぼ一致したところで直流
モータ１２を停止させ流量を設定流量に等しく調節する
ものである。図５のＡの流量誤差が小さい範囲では誤差
に比例した電圧となるが同図のＢの一定以上の流量誤差
の範囲では直流モータ１２に加える電圧限界があるため
モータ電圧は一定になる。A valve seat 4 is provided on a body 1 between a flow passage inlet 2 and a flow passage outlet 3, a valve shaft 6 connected to a valve body 5 and a spring 7 for urging the valve body 5 are provided. 6, a rotation linear conversion screw 9, a DC motor 12 that rotationally drives the valve shaft 6 via a gear 10 and a gear 11, a flow rate sensor 13, a flow rate calculation section 14, and a flow rate from the flow rate calculation section 14. The feedback control unit 15 controls the voltage of the DC motor 12 according to the difference between the signal and the set flow rate, the cam 16 integrated with the gear 11, and the position detector 17. FIG. 5 shows the characteristics of the feedback control unit 15. The flow rate calculation unit 14 calculates the flow rate signal of the flow rate sensor 13, and the DC motor 12 is operated at a voltage proportional to the flow rate error which is the difference between the flow rate signal and the set flow rate. Is driven to adjust the valve body 5 in the opening or closing direction, and when the flow rate signal substantially matches the set flow rate, the DC motor 12 is stopped and the flow rate is adjusted to the set flow rate. In the range where the flow rate error in FIG. 5A is small, the voltage is proportional to the error, but in the range where the flow rate error is greater than the certain level in B of the figure, the motor voltage is constant because there is a limit to the voltage applied to the DC motor 12.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記の
ような従来の構成のものに於いては次のような課題を有
していた。However, the conventional structure as described above has the following problems.
【０００５】図６は弁軸６の変位に対する流量の特性
で、同図のＣは流路入口２の水圧が低い場合、同図のＤ
は高い場合である。一般に家庭用の給水源はその流路抵
抗により複数箇所での同時使用や時間帯により大きく変
動する。弁座４と弁体５の開度の同一の変化に対して水
圧により流量の変化割合は図６のように大きく異なる。
図５の制御特性でフィードバック制御をかけると水圧が
高いＤの場合は流量の変化速度が速く、水圧が低いＣの
場合は流量の変化速度は遅くなる。図７は設定流量をＥ
のようにｔ１の間隔で変化させた時の流量の応答特性で
あり、水圧の高いＦの場合は設定の変化に追従するが、
水圧の低いＧの場合は大きな弁の変位量が必要なので遅
くなり設定の変化に追従できなくなる。これは同一の流
量設定変更操作に対して流量の変化が異なることになり
操作性を悪くしている。FIG. 6 shows the characteristics of the flow rate with respect to the displacement of the valve shaft 6, and C in the same figure shows D when the water pressure at the flow path inlet 2 is low.
Is high. Generally, the water supply source for households varies greatly depending on the time resistance and the simultaneous use at multiple locations due to the flow path resistance. The rate of change in the flow rate due to the water pressure differs greatly as shown in FIG. 6 for the same change in the opening of the valve seat 4 and the valve body 5.
When feedback control is applied with the control characteristics of FIG. 5, the change rate of the flow rate is fast when the water pressure is D, and the change rate of the flow rate is slow when the water pressure is C. Figure 7 shows the set flow rate as E
It is the response characteristic of the flow rate when it is changed at the interval of t1 as shown in FIG.
In the case of G where the water pressure is low, a large amount of valve displacement is required, and it becomes slow and cannot follow the change in setting. This deteriorates operability because the flow rate changes differently for the same flow rate setting changing operation.
【０００６】本発明は上記の課題を解決し、水圧の変化
に関係なく一定の流量応答性をもたせ、操作性の良い流
量制御装置を実現しようとするものである。The present invention is intended to solve the above problems and to realize a flow rate control device having good operability by providing a constant flow rate response regardless of changes in water pressure.
【０００７】[0007]
【課題を解決するための手段】本発明は上記目的を達成
するため、流量調節操作部による設定流量の増減速度を
一定速度以下に制限する増減速度信号をフィードバック
制御部に与える制限部を設けている。In order to achieve the above-mentioned object, the present invention is provided with a limiting section for giving an increasing / decreasing speed signal to the feedback control section for restricting the increasing / decreasing speed of the set flow rate by the flow rate adjusting operation section to a certain speed or less. There is.
【０００８】[0008]
【作用】この構成により、水圧が高い場合の流量変化速
度を制限し水圧の高低による流量応答性の差を無くすよ
う作用する。With this configuration, the flow rate changing rate when the water pressure is high is limited so that the difference in the flow rate response due to the height of the water pressure is eliminated.
【０００９】[0009]
【実施例】以下本発明の一実施例について図１〜図３を
参照しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
【００１０】図１において湯が接続された第１の入口１
８と水が接続された第２の入口１９と、１つの出口２０
と、第１の入口１８と出口２０の間に第１の弁座２１と
第１の弁体２２とが、第２の入口１９と出口２０の間に
第２の弁座２３と第２の弁体２４とがある。第１の弁体
２２と第２の弁体２４とにそれぞれ閉方向に付勢する第
１のばね２５および第２のばね２６とが設けられ、弁軸
６は第２の弁体２４を貫通してその先端は第１の弁体２
２の穴部２７に摺動可能に連結され、また止め輪２８で
第２の弁体２４に当接して弁軸６と、ともに右方向へ動
くようになっている。第２の弁体２４と弁軸６の貫通部
にはＯリング２９が設けられ摺動部をシールしている。
出口２０には流量センサ１３が設けられ、流量センサ１
３の信号は流量演算部１４で周期を測定され流量信号が
演算される。流量信号は設定流量信号と比較され、フィ
ードバック制御部１５は直流モータ１２を駆動しギヤ１
１およびギヤ１０により弁軸６を回動し弁軸６のねじ部
８と回転直線変換ネジ９により弁軸６をスラスト方向に
駆動する。ギヤ１１にはカム１６および位置検出器１７
が設けられ弁軸の中央位置を検出する。増減速度制限部
３０には流量調節操作部としての流量増スイッチ３１、
流量減スイッチ３２が接続され、増減速度制限部３０は
フィードバック制御部１５に設定流量信号を与える。In FIG. 1, a first inlet 1 to which hot water is connected
8 a second inlet 19 connected to water and one outlet 20
And a first valve seat 21 and a first valve body 22 between the first inlet 18 and the outlet 20, and a second valve seat 23 and a second valve seat 23 between the second inlet 19 and the outlet 20. There is a valve body 24. The first valve body 22 and the second valve body 24 are respectively provided with a first spring 25 and a second spring 26 for biasing in the closing direction, and the valve shaft 6 penetrates the second valve body 24. And its tip is the first valve body 2
The second hole 27 is slidably connected, and the stop ring 28 abuts the second valve body 24 so as to move rightward together with the valve shaft 6. An O-ring 29 is provided in the penetrating portion between the second valve body 24 and the valve shaft 6 to seal the sliding portion.
A flow rate sensor 13 is provided at the outlet 20, and the flow rate sensor 1
The signal of No. 3 has its period measured by the flow rate calculation unit 14 and the flow rate signal is calculated. The flow rate signal is compared with the set flow rate signal, and the feedback control unit 15 drives the DC motor 12 to drive the gear 1
The valve shaft 6 is rotated by 1 and the gear 10, and the valve shaft 6 is driven in the thrust direction by the screw portion 8 of the valve shaft 6 and the rotary straight line conversion screw 9. The gear 11 has a cam 16 and a position detector 17
Is provided to detect the central position of the valve shaft. The increase / decrease speed limiter 30 includes a flow rate increase switch 31 as a flow rate adjusting operation section,
The flow rate reduction switch 32 is connected, and the increase / decrease speed limiting section 30 gives a set flow rate signal to the feedback control section 15.
【００１１】上記構成により、弁軸６が中央位置のとき
は（図１の状態）第１および第２の弁体２２、２４共に
それぞれ第１の弁座２１、第２の弁座２３に当接してお
り出口２０には流量は流れない。With the above structure, when the valve shaft 6 is at the center position (state of FIG. 1), both the first and second valve bodies 22 and 24 respectively contact the first valve seat 21 and the second valve seat 23. Since they are in contact with each other, the flow rate does not flow to the outlet 20.
【００１２】第１の入口１８に接続された湯を出湯する
場合、フィードバック制御部１５は弁軸６を左方へ動か
すよう直流モータ１２を駆動する。第２の弁体２４は第
２の弁座２３に当接したまま弁軸６はＯリング２９で摺
動して第１のばね２５の力に対抗して第１の弁体２２を
開き出口２０に湯を供給する。この湯量を検出した流量
センサ１３が流量に比例した周波数のパルス信号を発生
し流量演算部１４が流量を演算しフィードバック制御部
１５が設定流量に等しくなるよう制御する。流量が設定
流量を越えると弁軸６を右方に駆動し流量が一定に保た
れる。When tapping hot water connected to the first inlet 18, the feedback control unit 15 drives the DC motor 12 to move the valve shaft 6 to the left. While the second valve body 24 is in contact with the second valve seat 23, the valve shaft 6 slides on the O-ring 29 and opposes the force of the first spring 25 to open the first valve body 22 and exit. Hot water is supplied to 20. The flow rate sensor 13 that detects the amount of hot water generates a pulse signal having a frequency proportional to the flow rate, the flow rate calculation unit 14 calculates the flow rate, and the feedback control unit 15 controls so that it becomes equal to the set flow rate. When the flow rate exceeds the set flow rate, the valve shaft 6 is driven to the right and the flow rate is kept constant.
【００１３】流量増スイッチ３１を操作すると増減速度
制限部３０は設定流量を一定量だけ増加した設定流量信
号をフィードバック制御部１５に与える。図２は流量増
スイッチ３１を連続して操作、たとえば押し続けた場合
の特性図であり、増減速度制限部３０は一定の時間ｔ２
ごとに一定量Ｈだけ設定流量を増加させる。その平均的
な変化速度Ｈ／ｔ２は水圧が低い場合の流量応答速度に
近い値に設定してある。水圧が高いときの流量の変化Ｊ
は設定流量の変化Ｉに追従して階段状の変化となる。水
圧の低い時の流量の変化Ｋはほぼ直線状に追従しＪ，Ｋ
とも平均的にはほぼ同じ速度の変化になる。When the flow rate increase switch 31 is operated, the increase / decrease speed limiting section 30 gives a set flow rate signal obtained by increasing the set flow rate by a fixed amount to the feedback control section 15. FIG. 2 is a characteristic diagram when the flow rate increasing switch 31 is continuously operated, for example, when it is continuously pressed.
Each time, the set flow rate is increased by a constant amount H. The average change speed H / t2 is set to a value close to the flow response speed when the water pressure is low. Change in flow rate when water pressure is high J
Follows a change I in the set flow rate and becomes a stepwise change. The change K of the flow rate when the water pressure is low follows the straight line J, K
And on average, the change in speed is almost the same.
【００１４】図３は本発明の他の一実施例であり、設定
流量Ｌを連続的に変化させるものであり図２の場合の平
均変化速度と同じ速度に制限してある。水圧が高い場合
の流量応答Ｍはほとんど設定流量Ｌに遅れなく追従す
る。水圧が低い場合の流量応答Ｎは設定流量Ｌからわず
かに遅れながらもほぼ同じ変化速度で追従することがで
きる。FIG. 3 shows another embodiment of the present invention in which the set flow rate L is continuously changed and is limited to the same speed as the average change speed in the case of FIG. When the water pressure is high, the flow rate response M almost follows the set flow rate L without delay. The flow rate response N when the water pressure is low can follow the set flow rate L at substantially the same change rate, although slightly delayed.
【００１５】流量減スイッチ３２の連続操作の場合は図
２及び図３と反対方向に設定流量の減少速度を一定以下
に抑えて同様に水圧の高低にかかわらず流量の変化速度
を一定にする。In the case of continuous operation of the flow rate reduction switch 32, the rate of decrease of the set flow rate is suppressed below a certain level in the opposite direction to that shown in FIGS. 2 and 3, and similarly, the rate of change of the flow rate becomes constant regardless of the level of the water pressure.
【００１６】一方第２の入口１９に接続された水を給水
する場合、弁軸６が右方に駆動され、第１の弁体２２は
第１の弁座２１に当接し、さらに弁軸６穴部２７の摺動
で右方に動き止め輪２８が第２の弁体２４を押し開け第
２の入口１９の水を出口２０に供給する。湯側の場合と
弁軸の駆動方向が逆になるのでフィードバック制御部１
５はモータ電圧極性を反対に出力する。設定流量の増減
操作は湯の場合と同様な動作となる。On the other hand, when supplying the water connected to the second inlet 19, the valve shaft 6 is driven to the right, the first valve body 22 abuts on the first valve seat 21, and the valve shaft 6 The slide of the hole 27 causes the detent ring 28 to the right to push the second valve body 24 open and supply the water at the second inlet 19 to the outlet 20. Since the driving direction of the valve shaft is opposite to that on the hot water side, the feedback control unit 1
5 outputs the motor voltage polarity in reverse. The operation of increasing / decreasing the set flow rate is the same as in the case of hot water.
【００１７】本実施例によれば、流量増スイッチ３１お
よび流量減スイッチ３２の連続した流量増加あるいは流
量減少指令に対して、一定時間ごとに一定変化量の設定
流量値の変更を行うか、または連続した一定変化速度の
流量設定値を発生する増減速度制限部３０とフィードバ
ック制御部１５とで構成し、高水圧時の流量変化速度を
制限し、水圧の高低にかかわらず一定の流量変化にでき
るという効果がある。According to the present embodiment, in response to the continuous flow rate increase or flow rate decrease command of the flow rate increase switch 31 and the flow rate decrease switch 32, the set flow rate value of a constant change amount is changed at regular time intervals, or It is composed of an increase / decrease speed limiting unit 30 that generates a continuous flow rate setting value of a constant change rate and a feedback control unit 15, limits the flow rate change rate at high water pressure, and can make a constant flow rate change regardless of the water pressure level. There is an effect.
【００１８】[0018]
【発明の効果】以上説明したように、本発明の流量制御
装置によれば、流量センサと、前記流量センサの信号と
設定流量の差に応じて流量調節弁を駆動するモータの速
度を制御するフィードバック制御部と、設定流量を調節
操作する流量調節操作部と、流量調節操作部による設定
流量の増減速度を制限する信号をフィードバック制御部
に与え増減速度制限部とで構成しているから、高水圧時
の流量変化速度を制限するよう作用し、水圧の変化に関
係なく一定の流量変化速度を実現できる効果を有し、給
湯、給水路の開閉および流量調節に利用して快適な操作
性を提供することができるものである。As described above, according to the flow rate control device of the present invention, the speed of the flow rate sensor and the motor for driving the flow rate control valve is controlled according to the difference between the signal of the flow rate sensor and the set flow rate. The feedback control unit, the flow rate adjustment operation unit that adjusts the set flow rate, and the feedback control unit that gives a signal that limits the increase / decrease rate of the set flow rate by the flow rate adjustment operation unit are configured by the increase / decrease speed limitation unit. It acts to limit the flow rate change rate under water pressure, and has the effect of achieving a constant flow rate change rate regardless of changes in water pressure. It is used for hot water supply, opening and closing of water supply channels, and flow rate adjustment for comfortable operability. What can be provided.
【図１】本発明の一実施例における流量制御装置の全体
構成図FIG. 1 is an overall configuration diagram of a flow rate control device according to an embodiment of the present invention.
【図２】同装置の設定流量および流量の変化特性図FIG. 2 is a set flow rate and flow rate change characteristic diagram of the device.
【図３】本発明の他の実施例における設定流量および流
量の変化特性図FIG. 3 is a set flow rate and flow rate change characteristic diagram in another embodiment of the present invention.
【図４】従来の流量制御装置の構成図FIG. 4 is a block diagram of a conventional flow control device.
【図５】従来のフィードバック制御のゲイン特性図FIG. 5 is a gain characteristic diagram of conventional feedback control.
【図６】同装置における水圧変化による弁の流量の特性
図FIG. 6 is a characteristic diagram of the flow rate of the valve due to a change in water pressure in the device.
【図７】従来の設定流量および流量の変化特性図[Fig. 7] Conventional set flow rate and change characteristic diagram of flow rate
６ 弁軸 １２ モータ １３ 流量センサ １５ フィードバック制御部 １８ 第１の入口 １９ 第２の入口 ２０ 出口 ２１ 第１の弁座 ２２ 第１の弁体 ２３ 第２の弁座 ２４ 第２の弁体 ３０ 増減速度制限部 ３１ 流量増スイッチ ３２ 流量減スイッチ 6 Valve Shaft 12 Motor 13 Flow Sensor 15 Feedback Control Unit 18 First Inlet 19 Second Inlet 20 Outlet 21 First Valve Seat 22 First Valve Body 23 Second Valve Seat 24 Second Valve Body 30 Increase / Decrease Speed limiter 31 Flow rate increase switch 32 Flow rate decrease switch
Claims (3)
設けた流量調節弁と、前記流量調節弁を駆動するモータ
と、前記流路に設けた流量センサと、前記流量センサの
信号と設定流量の差に応じて前記モータの速度を制御
し、設定流量にするフィードバック制御部と、前記設定
流量を調節操作する流量調節操作部と、前記流量調節操
作部による設定流量の増減速度を制限する信号を前記フ
ィードバック制御部に与える増減速度制限部からなる流
量制御装置。1. A flow passage having an inlet and an outlet, a flow control valve provided in the flow passage, a motor for driving the flow control valve, a flow sensor provided in the flow passage, and a flow sensor of the flow sensor. A feedback control unit that controls the speed of the motor according to the difference between the signal and the set flow rate to set the set flow rate, a flow rate adjustment operation unit that adjusts the set flow rate, and an increase / decrease speed of the set flow rate by the flow rate adjustment operation unit. A flow rate control device comprising an increase / decrease speed limiter for giving a signal for limiting the flow rate to the feedback controller.
少ボタンを有し、増減速度制限部は前記２つのボタンの
連続した増加あるいは減少指令に対して一定時間ごとに
一定変化量の流量設定値の変更を行う請求項１記載の流
量制御装置。2. A flow rate adjusting operation section has a flow rate increasing button and a flow rate decreasing button, and an increase / decrease speed limiting section sets a flow rate of a constant change amount at fixed time intervals with respect to continuous increase or decrease commands of the two buttons. The flow control device according to claim 1, wherein the value is changed.
少ボタンを有し、増減速度制限部は前記２つのボタンの
連続した増加あるいは減少指令に対して連続した一定変
化速度の流量設定値の信号を発生する請求項１記載の流
量制御装置。3. The flow rate adjusting operation section has a flow rate increasing button and a flow rate decreasing button, and the increase / decrease speed limiting section is for changing the flow rate set value of a constant constant change rate in response to a continuous increase or decrease command of the two buttons. The flow control device according to claim 1, which generates a signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16885892A JPH0612127A (en) | 1992-06-26 | 1992-06-26 | Flow rate controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16885892A JPH0612127A (en) | 1992-06-26 | 1992-06-26 | Flow rate controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0612127A true JPH0612127A (en) | 1994-01-21 |
Family
ID=15875870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16885892A Pending JPH0612127A (en) | 1992-06-26 | 1992-06-26 | Flow rate controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0612127A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009039685A1 (en) * | 2007-09-27 | 2009-04-02 | Zhongxi Tan | High precision automatic flow balancing device |
| JP2010084864A (en) * | 2008-09-30 | 2010-04-15 | Toto Ltd | Faucet device |
-
1992
- 1992-06-26 JP JP16885892A patent/JPH0612127A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009039685A1 (en) * | 2007-09-27 | 2009-04-02 | Zhongxi Tan | High precision automatic flow balancing device |
| JP2010084864A (en) * | 2008-09-30 | 2010-04-15 | Toto Ltd | Faucet device |
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