JPS603720A - Mixing device of hot water and cold water - Google Patents

Mixing device of hot water and cold water

Info

Publication number
JPS603720A
JPS603720A JP11211783A JP11211783A JPS603720A JP S603720 A JPS603720 A JP S603720A JP 11211783 A JP11211783 A JP 11211783A JP 11211783 A JP11211783 A JP 11211783A JP S603720 A JPS603720 A JP S603720A
Authority
JP
Japan
Prior art keywords
hot water
mixing
mixed
motor
temperature
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.)
Granted
Application number
JP11211783A
Other languages
Japanese (ja)
Other versions
JPH035608B2 (en
Inventor
Yoshiyuki Yokoajiro
義幸 横網代
Hiroaki Yonekubo
寛明 米久保
Yukio Nagaoka
行夫 長岡
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP11211783A priority Critical patent/JPS603720A/en
Publication of JPS603720A publication Critical patent/JPS603720A/en
Publication of JPH035608B2 publication Critical patent/JPH035608B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00Control of temperature
    • G05D23/01Control of temperature without auxiliary power
    • G05D23/13Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures
    • G05D23/1393Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures characterised by the use of electric means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Multiple-Way Valves (AREA)
  • Control Of Temperature (AREA)

Abstract

PURPOSE:To mix hot water and cold water stably with high responsiveness by controlling the speed gain of a control circuit in accordance with the signal of a detector for the quantity of hot water. CONSTITUTION:Though a voltage proportional to a temperature error is applied to a motor 10, a blade wheel is rotated at a high speed and the voltage applied to a gate G of an FET25 is a negative large value if the quantity of hot water to be mixed is large. A resistance value between a source S and a drain D of an FET inserted to a negative feedback circuit of an operational amplifier 23 is increased, and a voltage gain determined by a ratio of a resistance value between the source and the drain of the FET25 to the resistance value of a resistance 24 is increased. When the quantity of hot water to be mixed is small contrarily, the voltage gain is reduced. The speed gain is automatically controlled in accordance with the quantity of hot water to be mixed on both sides of a blind sector due to the start voltage of a motor. Consequently, the motor 10 is driven in a high speed to attain quick responsiveness when the quantity of hot water to be mixed is large, and the motor 10 is driven at a low speed to secure safety when the quantity of hot water to be mixed is small.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は高温湯と水とを自動的に混合し所望温度の混合
湯を得るための湯水混合装置に朗するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to a hot water mixing device for automatically mixing high temperature hot water and water to obtain mixed hot water at a desired temperature.

従来例の構成とその問題点 従来この種の湯水混合装置は第1図に示すように湯通路
1、水通路2、及び混合通路3を有する混合弁本体4の
中で、湯側弁体6及び水側弁体力く弁軸7に固定され、
ネジ送り機構8、減速器9を介して直流サーボモータ1
0で駆動される。混合湯温は混合湯温検出器11で検出
され、温度設定器12の信号と比較され、その山差信号
か増幅回路13で増幅され、直流サーボモータ10(以
後単にモータ10という)を駆動する。
Structure of the conventional example and its problems As shown in FIG. and the water side valve body is firmly fixed to the valve shaft 7,
DC servo motor 1 via screw feed mechanism 8 and decelerator 9
Driven by 0. The mixed water temperature is detected by a mixed water temperature detector 11 and compared with a signal from a temperature setting device 12, and the peak difference signal is amplified by an amplifier circuit 13 to drive a DC servo motor 10 (hereinafter simply referred to as motor 10). .

第2図(alは従来例の温度誤差とモータ速度の関係で
ある。温度誤差を増幅した値かモータの起動電圧になる
点(1)てモータは回転を始め、温度誤差が太き(なる
とそれに比例してモータ速度が増し増幅回路の電源電圧
等で決まる点(2)で最高速度となる。(1)から(2
)の間が比例動作域でありこの傾斜が速度ゲインである
。温度誤差が負の場合モータ方向が逆になり同様の動作
をする。
Figure 2 (al is the relationship between temperature error and motor speed in the conventional example. At the point (1) where the amplified value of the temperature error becomes the starting voltage of the motor, the motor starts rotating, and the temperature error increases (as The motor speed increases in proportion to this and reaches the maximum speed at point (2), which is determined by the power supply voltage of the amplifier circuit, etc. (1) to (2)
) is the proportional operating range, and this slope is the speed gain. If the temperature error is negative, the motor direction is reversed and the same operation occurs.

第2図tb+は従来例の動作の時間的変化を示すもので
ある。(3)で設定温度を変更するとモータ10は高速
で回転して弁位置を補正し湯と水の混合比が変化する。
FIG. 2 tb+ shows temporal changes in the operation of the conventional example. When the set temperature is changed in step (3), the motor 10 rotates at high speed, corrects the valve position, and changes the mixing ratio of hot water and water.

混合湯温か設定温度に近くなるほどモータ10は速度を
減少していき、温度誤差がなくなったところでモータ1
0は停止する。ここで速度ゲインが大きい程応答が速く
なり速かに設定温度の混合湯が得られるが、反面安定性
が悪くなりオーバーシュートやハンチングを起こしやす
くなる。従って速度ゲインは応答性と安定性の両面から
制約される。混合湯出湯流量の大きい範囲で速度ゲイン
を最適な値に設定すると流量の小さい範囲では同様に(
4)で設定温度を変更するとオーバーシュートが大きく
なりついには定常的なハンチングを起こし始める。設定
温度変更だけでなく流量変更、湯及び水の圧力変動等の
過渡時にも同様である。これは、■弁位置から混合湯温
検出器までの時間遅れが流量に逆比例して大きくなり、
ムダ時間要素が大きくなる。■弁変位に対する流量変化
の感度が高くなる。等の原因によるもので、広い流量範
囲にわたって、応答が速くかつ安定な湯水混合装置を実
現することが難しかった。
The motor 10 decreases its speed as the mixed water temperature approaches the set temperature, and when the temperature error disappears, the motor 1
0 stops. Here, the larger the speed gain, the faster the response and the faster the mixed water at the set temperature can be obtained, but on the other hand, the stability becomes worse and overshoot and hunting are more likely to occur. Therefore, speed gain is restricted from both responsiveness and stability. If you set the speed gain to the optimal value in a range where the mixed hot water tap flow rate is large, the same effect will be obtained in a range where the flow rate is small (
When the set temperature is changed in step 4), the overshoot increases and eventually steady hunting begins to occur. The same applies not only to changes in set temperature, but also to changes in flow rate, changes in pressure of hot water and water, etc. This is because ■The time delay from the valve position to the mixed water temperature detector increases inversely to the flow rate.
The wasted time factor increases. ■Higher sensitivity of flow rate changes to valve displacement. Due to these reasons, it has been difficult to realize a hot water mixing device that responds quickly and stably over a wide flow range.

発明の目的 本発明は、かかる従来の目的を解決するもので広い出湯
流量範囲にわたって、応答が速くかつ出湯々温の安定な
湯水混合装置を実現することを目的とするものである。
OBJECTS OF THE INVENTION The present invention solves the conventional objects and aims to realize a hot water mixing device that has a quick response and stable hot water temperature over a wide range of hot water flow rate.

発明の構成 この目的を達成するために本発明は、水通路と湯通路の
開度を差動的に調節する混合ガと、駆動部と、混合湯温
検出器と、温度設定器と、さらに混合湯量検出器と、こ
れに連動してゲインを調節する温度誤差増幅器とを設け
、温度誤差増幅器の出力で駆動部のモータを動かすよう
構成したものである。
Structure of the Invention In order to achieve this object, the present invention comprises a mixing gas that differentially adjusts the opening degrees of a water passage and a hot water passage, a driving section, a mixing hot water temperature detector, a temperature setting device, and further comprising: This system is equipped with a mixed water amount detector and a temperature error amplifier that adjusts the gain in conjunction with the detector, and the output of the temperature error amplifier is used to drive the motor of the drive section.

この構成により、混合湯量の大小に応じて温度誤差に対
するモータ速度のゲインが変化し、広い き流量範囲に
わたって、応答性と安定性のバランスが保たれるという
作用がある。
With this configuration, the gain of the motor speed relative to the temperature error changes depending on the amount of mixed hot water, and the balance between responsiveness and stability is maintained over a wide flow rate range.

実施例の説明 以下、本発明の実施例を第3図、第4図を用いて説明す
る。
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to FIGS. 3 and 4.

第3図において、湯通路1.水通路2.混合通路とを有
する混合弁本体件の中の中で、湯通路の開度を調節する
湯側弁体と水通路の開度を調節する水側弁体6とが弁軸
7にばね14で付勢され止メ輪15に当接されて連結さ
れている。弁体5゜6は弁軸7に対して梱動自山であり
、ばね14は各弁体の全閉当接時の逃げを作る。弁軸7
はねじ送り機構8、減速機9を介して直流サーボモータ
10(以下、モータと云う)で直線的に駆動される。混
合通路3には混合湯量検出器1迭とサーミスタ11とが
設けられている。混合湯量検出器14は混合湯の流動を
受けて回転する翼車15と翼車の一方の先端に付けられ
た磁石16及び磁石に対向して混合弁本体その外側に取
付けられた磁気検出素子17とで構成され、混合湯量に
比例したパルス出力が得られる。サーミスタ11は温度
設定ボリューム、基準抵抗19.20とともにブリッジ
回路旦を構成し、混合湯温と設定温度の差に比例した電
圧が温度誤差増幅器zsjこ加えられる。温度誤差増幅
器22は演算増幅器23とその反転入力端子に接続され
た入力抵抗24および負帰還回路の電圧効果トランジス
タ25演算増幅器の出力ラミ流増幅するトランジスタ2
6.27とで構成され、その出力でモータ10を駆動す
る。
In FIG. 3, hot water passage 1. Water passage 2. In the mixing valve main body having a mixing passage, a hot water side valve body that adjusts the opening degree of the hot water passage and a water side valve body 6 that adjusts the opening degree of the water passage are attached to the valve shaft 7 by a spring 14. It is biased and abuts against the retaining ring 15 and is connected. The valve bodies 5.6 are self-locking against the valve stem 7, and the spring 14 provides relief when each valve body is fully closed. Valve stem 7
is linearly driven by a DC servo motor 10 (hereinafter referred to as the motor) via a screw feed mechanism 8 and a speed reducer 9. The mixing passage 3 is provided with a mixing water amount detector 1 and a thermistor 11. The mixed hot water amount detector 14 includes an impeller 15 that rotates in response to the flow of mixed hot water, a magnet 16 attached to one tip of the impeller, and a magnetic detection element 17 attached to the outside of the mixing valve body facing the magnet. A pulse output proportional to the amount of mixed hot water can be obtained. The thermistor 11 constitutes a bridge circuit together with a temperature setting volume and reference resistors 19 and 20, and a voltage proportional to the difference between the mixed water temperature and the set temperature is applied to the temperature error amplifier zsj. The temperature error amplifier 22 includes an operational amplifier 23, an input resistor 24 connected to its inverting input terminal, a voltage effect transistor 25 of the negative feedback circuit, and a transistor 2 for amplifying the output of the operational amplifier Lami current.
6.27, and its output drives the motor 10.

一方磁気検出素子で得られた流量パルスは、F/V変挽
回li!!52Bで同波数に比例した負の電圧に変換さ
れ、電界効果トランジスタ25のゲート入力端子に接続
される。リミットスイッチ29.30は弁体5,6の移
動範囲を規制するリミットスイッチであるが、ここでは
詳しくは説明しない。
On the other hand, the flow rate pulse obtained by the magnetic detection element is the F/V change recovery li! ! 52B, it is converted into a negative voltage proportional to the same wave number, and connected to the gate input terminal of the field effect transistor 25. The limit switches 29 and 30 are limit switches that restrict the movement range of the valve bodies 5 and 6, but will not be described in detail here.

以上の構成により、モータ10には温度誤差に比例した
電圧が印加されるが、混合湯量が大きい時は翼車の回転
が速く電界効果トランジスタ25のゲー)Gに加えられ
る電圧は負の大きな値となり、演算増幅23の負帰還回
路に入れられた電界効果トランジスタのソースSとドレ
インDの間の抵抗値が大きくなり、よって電界効果トラ
ンジスタのソース・ドレイン間抵抗値R25と抵抗24
の抵抗値R24の比(R25/R24)で決まる電圧ゲ
インが大きくなる。逆に混合湯量が小さい時は反対に電
圧ゲイン小さくなる。温度誤差に対してモータ速度の特
性は第4図のように、モータの起動電圧による不感帯(
1)の両側で混合湯量に応じて速度ゲインが自動調節さ
れる。
With the above configuration, a voltage proportional to the temperature error is applied to the motor 10, but when the amount of mixed hot water is large, the impeller rotates quickly and the voltage applied to the field effect transistor 25 G is a large negative value. Therefore, the resistance value between the source S and drain D of the field effect transistor inserted into the negative feedback circuit of the operational amplifier 23 increases, and therefore the resistance value R25 between the source and drain of the field effect transistor and the resistance 24
The voltage gain determined by the ratio of the resistance value R24 (R25/R24) increases. Conversely, when the amount of mixed hot water is small, the voltage gain becomes small. As shown in Figure 4, the characteristics of motor speed with respect to temperature error are determined by the dead zone (
The speed gain is automatically adjusted on both sides of 1) according to the amount of mixed hot water.

よって、混合湯量の大きい時は、モータ1oを速く駆動
して応答性を速くでき、混合湯量が小さく温度検出のム
ダ時間が大きくなる範囲では、モータ10をゆっくり回
して安定性を確保できるのである。
Therefore, when the amount of mixed hot water is large, the motor 10 can be driven quickly to increase the response, and when the amount of mixed hot water is small and the wasted time of temperature detection is large, the motor 10 can be rotated slowly to ensure stability. .

発明の効果 以上のように本発明の湯水混合装置によれば、次の効果
が得られる。
Effects of the Invention As described above, according to the hot water mixing device of the present invention, the following effects can be obtained.

(1)水通路と湯通路の開度を差動的に調節する混合弁
と駆動部と、混合通路に混合湯温検出器と混合湯量検出
器と混合湯量に応じてゲインを自動調節する制御回路と
を設けた構成により、混合湯量1こ応じたゲインで弁を
駆動でき、広い流量範囲にわたって応答が速く、混合湯
温安定性の良い湯水混合装置を実現できる。
(1) A mixing valve and a drive unit that differentially adjust the opening degrees of the water passage and the hot water passage, a mixing passage that includes a mixing water temperature detector, a mixing hot water amount detector, and a control that automatically adjusts the gain according to the mixing hot water amount. With the configuration provided with the circuit, the valve can be driven with a gain corresponding to the amount of mixed hot water, and a hot water mixing device with quick response over a wide flow rate range and good temperature stability of mixed hot water can be realized.

(2)流量が大きい時はゲインを大きく、疏、量が小ざ
い時はゲインを小さく設定する様構成したことにより、
小流量時の温度検出ムダ時間の影響を除いて、広い流量
範囲にわたって混合湯温安定性の良い湯水混合装置を実
現できる。
(2) By configuring the structure so that the gain is set large when the flow rate is large, and the gain is set small when the flow rate is small,
By eliminating the influence of temperature detection waste time during small flow rates, it is possible to realize a hot water mixing device with good mixing water temperature stability over a wide flow rate range.

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

第1図は、従来の湯水混合装置の構成図、第2図は従来
例の動作特性図で、第2図(a)は温度誤差対モータ速
度の関係を示す特性図、第2図(blは時間に対する設
定温度、混合湯温の変化特性図、第3図は本発明の一実
施例の構成図、第4図は本発明の一実施例の温度誤差に
対するモータ速度の特性図である。 1・・・・・・湯通路、2・・・・・・水通路、3・・
・・・・混合通路、4°°°−°U−!f″*L 5°
゛−°−?JHllL 6°°°°−°zk側1側体1
体・・・・・・弁軸、10・・・・・・直流サーボモー
タ、11・・・・・・混合湯温検出器(サーミスタ)、
14・・・・・・混合湯量検出器、18・・・・・・温
度設定器(ボリューム)、22・・・・・・温度誤差増
幅器、25・・・・・・電界効果トランジスタ、28・
・・・・・F/V変換器。 代理人の氏名 弁理士 中 尾 敏 男 ほか1名第1
図 第2図 (a) 第3図 ]′ 第4図
Figure 1 is a configuration diagram of a conventional hot water mixing device, Figure 2 is an operating characteristic diagram of the conventional example, Figure 2 (a) is a characteristic diagram showing the relationship between temperature error and motor speed, and Figure 2 (bl 3 is a diagram showing the change in set temperature and mixed water temperature with respect to time, FIG. 3 is a configuration diagram of an embodiment of the present invention, and FIG. 4 is a characteristic diagram of motor speed with respect to temperature error in an embodiment of the present invention. 1...Hot water passage, 2...Water passage, 3...
...Mixing passage, 4°°°−°U−! f″*L 5°
゛−°−? JHllL 6°°°°−°zk side 1 side body 1
Body: Valve shaft, 10: DC servo motor, 11: Mixed water temperature detector (thermistor),
14... Mixed hot water amount detector, 18... Temperature setting device (volume), 22... Temperature error amplifier, 25... Field effect transistor, 28...
...F/V converter. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2(a) Figure 3]' Figure 4

Claims (1)

【特許請求の範囲】[Claims] (1)水通路の開度と湯通路の開度とを差動的に調節す
る混合弁と、この混合弁を駆動する駆動部と、前記水通
路と湯通路とを合流して混合湯を得る混合通路と、この
混合通路に設けられた流量検出器と、前記混合通路に設
けられた混合湯温検出器と、混合湯温を設定する温度設
定器と、前記混合湯温検出器と温度設定器の信号により
温度誤差に比例した速度で前記駆動部を運転する制御回
路とを有し、前記湯量検出器の信号に応じて前記制御回
路の速度ゲインを調節するよう構成した湯水混合装置。 (21流量が大きいときはゲインを大きく、流量が小い
ときはゲインを小さく設定するように構成した特許請求
の範囲第1項記載の湯水混合装置。
(1) A mixing valve that differentially adjusts the opening of the water passage and the hot water passage, a drive unit that drives the mixing valve, and a mixing valve that merges the water passage and the hot water passage to produce mixed hot water. a flow rate detector provided in the mixing path, a mixing water temperature detector provided in the mixing path, a temperature setting device for setting the mixing water temperature, the mixing water temperature sensor and the temperature A hot water mixing device comprising: a control circuit that operates the driving section at a speed proportional to a temperature error based on a signal from a setting device, and configured to adjust a speed gain of the control circuit according to a signal from the hot water amount detector. (21) The hot water mixing device according to claim 1, wherein the gain is set to be large when the flow rate is large, and the gain is set to be small when the flow rate is small.
JP11211783A 1983-06-21 1983-06-21 Mixing device of hot water and cold water Granted JPS603720A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11211783A JPS603720A (en) 1983-06-21 1983-06-21 Mixing device of hot water and cold water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11211783A JPS603720A (en) 1983-06-21 1983-06-21 Mixing device of hot water and cold water

Publications (2)

Publication Number Publication Date
JPS603720A true JPS603720A (en) 1985-01-10
JPH035608B2 JPH035608B2 (en) 1991-01-28

Family

ID=14578595

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11211783A Granted JPS603720A (en) 1983-06-21 1983-06-21 Mixing device of hot water and cold water

Country Status (1)

Country Link
JP (1) JPS603720A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01501490A (en) * 1986-02-04 1989-05-25 ベロイト・コーポレイション Control valve for steam box
JPH01164515U (en) * 1988-05-07 1989-11-16
WO2012090362A1 (en) * 2010-12-27 2012-07-05 株式会社テージーケー Vehicle heating, ventilation and air conditioning system
WO2012108140A1 (en) * 2011-02-07 2012-08-16 株式会社テージーケー Control valve
JP2017032197A (en) * 2015-07-31 2017-02-09 リンナイ株式会社 Gas cooking stove device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01501490A (en) * 1986-02-04 1989-05-25 ベロイト・コーポレイション Control valve for steam box
JPH01164515U (en) * 1988-05-07 1989-11-16
WO2012090362A1 (en) * 2010-12-27 2012-07-05 株式会社テージーケー Vehicle heating, ventilation and air conditioning system
WO2012108140A1 (en) * 2011-02-07 2012-08-16 株式会社テージーケー Control valve
JP2017032197A (en) * 2015-07-31 2017-02-09 リンナイ株式会社 Gas cooking stove device

Also Published As

Publication number Publication date
JPH035608B2 (en) 1991-01-28

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