JPH07108390B2 - Directly connected hot water washer - Google Patents
Directly connected hot water washerInfo
- Publication number
- JPH07108390B2 JPH07108390B2 JP62208825A JP20882587A JPH07108390B2 JP H07108390 B2 JPH07108390 B2 JP H07108390B2 JP 62208825 A JP62208825 A JP 62208825A JP 20882587 A JP20882587 A JP 20882587A JP H07108390 B2 JPH07108390 B2 JP H07108390B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- valve
- pressure
- control
- flow rate
- 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.)
- Expired - Fee Related
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、水道直結形温水洗浄器の洗浄水量の自動制御
に関するものである。Description: TECHNICAL FIELD The present invention relates to automatic control of the amount of washing water in a hot water washing machine directly connected to a water supply.
従来の温水洗浄器は第９図に示す様な洗浄水回路になっ
ている。すなわち、給水パイプ１の継手２により分岐し
た水道水は止水弁３、電磁弁４を通り流量調整弁５で一
定水量になる様に制御され、水量または水圧を検知する
センサ７を通り、温水タンク８で適温に加熱制御され、
ノズル８より吐出する。上記流量調整弁５は、上記セン
サ７より得られたデータにもとづき制御回路６で弁の開
度を決定する。即ち、単一関数の比例制御、PID制御等
のフィードバック制御により、水道水の元水圧にかかわ
らず水量を一定にするよう制御する。なお、一般的に水
道の元水圧は0.5〜7.5kg f/cm2の範囲である。The conventional warm water washer has a wash water circuit as shown in FIG. That is, the tap water branched by the joint 2 of the water supply pipe 1 is controlled so as to have a constant water amount by the flow control valve 5 through the water stop valve 3 and the solenoid valve 4, passes through the sensor 7 that detects the water amount or the water pressure, and is heated by the hot water. Heated to a suitable temperature in the tank 8,
Discharge from the nozzle 8. The flow rate adjusting valve 5 determines the opening degree of the valve in the control circuit 6 based on the data obtained from the sensor 7. That is, feedback control such as proportional control of a single function and PID control is performed so that the amount of water is kept constant regardless of the source water pressure of tap water. The source water pressure of the water supply is generally in the range of 0.5 to 7.5 kg f / cm 2 .
しかしながら、従来の水量制御は、ある一定の水道圧Ｐ
の時には最適な水量制御を行なうことができるが、水道
圧Ｐよりも高い水圧ではハンチング現象が起こり、水道
圧Ｐより低い水圧では設定水量に達する時間が長いとい
う現象が起こる。ハンチング現象の場合は、設定水量に
対し、±50cc/分以上変化すると使用者に不快感を与え
ることがあり、また設定水量に安定する時間が長いと使
い勝手が悪いという欠点がある。However, the conventional water volume control has a certain water supply pressure P
At the time of, the optimum amount of water can be controlled, but at a water pressure higher than the water pressure P, a hunting phenomenon occurs, and at a water pressure lower than the water pressure P, the time to reach the set water amount takes a long time. In the case of the hunting phenomenon, there is a drawback in that the user may feel uncomfortable if the amount of water set changes by ± 50 cc / min or more, and if the set water amount stabilizes for a long time, it is not easy to use.
即ち、第５図乃至第９図について説明すると、一定水道
圧時に制御回路６がセンサ７からの信号を受けて、流量
調整弁５を第６図に示すごとくａ、ｂ、ｃの各関数で制
御すると第５図に示す制御特性となる。つまり、第６図
のａに示すごとく、流量調整弁５の制御速度を速くした
場合は、第５図１の様に目標水量値に達するまでの時間
は短いがハンチング現象が大きく収束しない場合があ
る。また、第６図のＣに示すごとく流量調整弁５の制御
速度を遅くした場合は、第５図３の様にハンチング現象
はないが目標水量値に達するまでの時間が長くかかる。
従って、第５図２に示すごとくハンチング現象も小さ
く、目標水量に達するまでの時間が比較的短い第６図ｂ
の流量調整弁５の制御速度のような関数を最適関数とし
ている。That is, referring to FIG. 5 to FIG. 9, the control circuit 6 receives a signal from the sensor 7 at a constant water pressure, and causes the flow rate adjusting valve 5 to function as a, b, and c as shown in FIG. When controlled, the control characteristics shown in FIG. 5 are obtained. That is, as shown in a of FIG. 6, when the control speed of the flow rate adjusting valve 5 is increased, the time until the target water amount value is reached is short but the hunting phenomenon does not largely converge as shown in FIG. is there. When the control speed of the flow rate adjusting valve 5 is slowed as shown in C of FIG. 6, there is no hunting phenomenon as in FIG. 5, but it takes a long time to reach the target water amount value.
Therefore, as shown in FIG. 5 and FIG. 2, the hunting phenomenon is small, and the time to reach the target water volume is relatively short.
The optimum function is a function such as the control speed of the flow rate adjusting valve 5.
次に、例えば、一定水道圧Ｐ＝4.0kg f/cm2の時の第６
図のｂの制御速度に相当する最適関数である場合におい
て、水道圧Ｐ＝7.5kg f/cm2、Ｐ＝1.0kg f/cm2の時の水
量制御特性の一例を第７図に示す。Ｐ＝7.5kg f/cm2の
時は、一定水圧時に第６図のａのごとく流量調整弁５の
制御速度を速くした場合と同様な結果になり、またＰ＝
1.0kg f/cm2の時は第６図のＣのごとく流量調整弁５の
制御速度を遅くした場合と同様な結果になる。この原因
は、流量調整弁５の開度と水量の関係が第８図に示す特
性であるためで、Ｐ＝7.5kg f/cm2の時の制御に必要な
弁の開度アは一定水道圧Ｐ＝4.0kg f/cm2の弁の開度イ
よりも小さくなっており、したがって一定水道圧Ｐ＝4.
0kg f/cm2に最適な弁の制御速度の場合、Ｐ＝7.5kg f/c
m2では相対的に弁の制御速度が速くなったと考えられ
る。又、Ｐ＝1.0kg f/cm2の時の制御に必要な弁の開度
ウは一定水圧Ｐ＝4.0kg f/cm2の弁の開度イよりも大き
くなっており、したがって一定水道圧Ｐ＝4.0kg f/cm2
に最適な弁の制御速度の場合、相対的に弁の制御速度が
遅くなったと考えられる。Next, for example, when the constant water pressure P = 4.0 kg f / cm 2
FIG. 7 shows an example of the water amount control characteristics when the water pressure is P = 7.5 kg f / cm 2 and P = 1.0 kg f / cm 2 in the case of the optimum function corresponding to the control speed in FIG. When P = 7.5 kg f / cm 2, the result is the same as when the control speed of the flow rate adjusting valve 5 is increased as shown in a of FIG. 6 at constant water pressure, and P =
At 1.0 kg f / cm 2, the result is the same as when the control speed of the flow rate adjusting valve 5 is slowed as shown in C of FIG. This is because the relationship between the opening of the flow rate adjusting valve 5 and the amount of water is the characteristic shown in FIG. 8, and the valve opening a required for control when P = 7.5 kg f / cm 2 is constant. It is smaller than the valve opening a at pressure P = 4.0 kg f / cm 2 , so the constant water pressure P = 4.
For the optimum valve control speed of 0 kg f / cm 2 , P = 7.5 kg f / c
It is considered that the control speed of the valve was relatively high at m 2 . Further, the opening degree c of the valve necessary to control the time of P = 1.0kg f / cm 2 is larger than Hirakidoi constant water pressure P = 4.0kg f / cm 2 of the valve, thus a constant water pressure P = 4.0kg f / cm 2
In the case of the optimum valve control speed, it is considered that the valve control speed was relatively slow.
以上のごとく、従来の単一関数によるフィードバック制
御では、ある一定の水道圧において最適な制御を行って
も、他の水圧時には最適な制御とはならなくなる欠点が
ある。As described above, the conventional single-function feedback control has a drawback that even if optimal control is performed at a certain water pressure, it will not be optimal at other water pressures.
本発明は、上記欠点に鑑みてなされたものであり、流量
調整弁の弁の制御関数を固定せずにセンサーの特性、制
御系の特性に応じた水圧別の制御関数を２つ以上用意し
て使い分けることにより、使用勝手が良好で且つ不快感
を与えることのない水道直結形温水洗浄器を提供するこ
とを目的としたものである。The present invention has been made in view of the above drawbacks, and two or more control functions for each water pressure are prepared according to the characteristics of the sensor and the characteristics of the control system without fixing the control function of the valve of the flow rate adjusting valve. The purpose of the present invention is to provide a hot water washer directly connected to the tap water, which is convenient to use and does not cause discomfort.
上記の目的を達成するための本発明の構成を実施例に対
応する第１図を用いて説明すると、本発明は、先端部に
洗浄水の吐出口を有するノズル（９）を接続する配管の
途中に流量調整弁（５）と上記配管中を流れる水量を検
知するセンサ（17）を設けるとともに、該センサ（17）
の検知結果にもとづき上記流量調整弁（５）の開度を調
整する制御回路（６）を備えた水道直結形温水洗浄器に
おいて、洗浄開始時に上記流量調整弁（５）を初期設定
開度に調整して通水させ、該センサ（17）からの検知結
果にもとづき、水道の元圧を推測し、得られた水道圧に
応じて流量調整弁（５）を制御する最適の関数をあらか
じめ用意してある２つの制御関数の中から制御回路
（６）によって選択決定する技術手段を講じている。The structure of the present invention for achieving the above object will be described with reference to FIG. 1 corresponding to an embodiment. The present invention is directed to a pipe for connecting a nozzle (9) having a washing water discharge port at its tip. A flow rate adjusting valve (5) and a sensor (17) for detecting the amount of water flowing through the pipe are provided on the way, and the sensor (17)
In a direct water supply type hot water washer equipped with a control circuit (6) for adjusting the opening degree of the flow rate adjusting valve (5) based on the detection result of the above, the flow rate adjusting valve (5) is set to the initial setting opening degree at the start of cleaning. Prepare the optimum function to adjust the water flow, estimate the source water pressure based on the detection result from the sensor (17), and control the flow control valve (5) according to the obtained water pressure. The technical means for selecting and determining by the control circuit (6) from the two control functions are provided.
そして、本発明は前記の手段により、洗浄開始時には電
磁弁４を開き直流モータ12を流量調整弁５のバルブ13が
開く方向に一定速度で約２秒間回転させたのち該直流モ
ータ12を１秒間停止させることでバルブ13のスリット16
の開口面積を一定にし水量センサ17の値を安定させる。
この時、該センサ17からのデータにもとづき制御回路６
によって水道の元圧が3kg f/cm2より高いか、又は低い
かを判断し、高い場合には第４図アに示すような流量調
整弁５の制御速度をもつ高水圧用制御関係を、低い場合
には第４図イに示すような流量調整弁５の制御速度をも
つ低圧用制御関数を選択し、制御回路６により流量調整
弁５のバルブ13のスリット16が適正になるよう制御を行
なう。洗浄停止時には、電磁弁４を閉じ流量調整弁５の
バルブ13を閉じる。According to the present invention, by the above means, the solenoid valve 4 is opened at the start of cleaning, and the DC motor 12 is rotated at a constant speed for about 2 seconds in the direction in which the valve 13 of the flow rate adjusting valve 5 is opened. Slit 16 of valve 13 by stopping
The opening area of is fixed and the value of the water amount sensor 17 is stabilized.
At this time, the control circuit 6 is based on the data from the sensor 17.
It is judged whether the source pressure of the water supply is higher or lower than 3 kg f / cm 2 , and if it is higher, the control relationship for high water pressure having the control speed of the flow rate adjusting valve 5 as shown in FIG. If it is low, a control function for low pressure having a control speed of the flow rate adjusting valve 5 as shown in FIG. 4A is selected, and the control circuit 6 controls so that the slit 16 of the valve 13 of the flow rate adjusting valve 5 becomes appropriate. To do. When cleaning is stopped, the solenoid valve 4 is closed and the valve 13 of the flow rate adjusting valve 5 is closed.
本発明の実施例を第１図〜第４図にもとづき以下説明す
る。An embodiment of the present invention will be described below with reference to FIGS.
給水パイプ12より継手２により分岐した水道水は止水弁
３、電磁弁４、ガバナ10を通り、流量調整弁５で一定水
量になるように制御される。ここで制御された水道水は
２つに分岐し、一方は水量センサ17、温水タンク８を通
りノズル９より吐出する。他方は、オリフィス11を通り
排水される。上記流量調整弁５の構造を第２図、第３図
に示す。流入口により入った水道水はバルブ13に入り、
スリット16を通り流出口より出る。直流モータ12の出力
は減速機15を介してバルブ13を両方向に回転させる。ま
た、水をシールするためにオーリング14が取り付けてあ
る。水量制御は、バルブ13を回転させ、スリット16の開
口面積を変化させる事により行なう。The tap water branched from the water supply pipe 12 by the joint 2 passes through the water shutoff valve 3, the electromagnetic valve 4, and the governor 10, and is controlled by the flow rate adjusting valve 5 so as to have a constant water amount. The tap water controlled here is branched into two, one of which is discharged from the nozzle 9 through the water amount sensor 17 and the hot water tank 8. The other is drained through the orifice 11. The structure of the flow rate adjusting valve 5 is shown in FIGS. 2 and 3. Tap water entered by the inlet enters the valve 13,
Pass through the slit 16 and exit from the outlet. The output of the DC motor 12 causes the valve 13 to rotate in both directions via the speed reducer 15. Also, an O-ring 14 is attached to seal water. The water amount control is performed by rotating the valve 13 and changing the opening area of the slit 16.
本発明では水量センサ17を用い、バルブ13の位置に水圧
を検知するセンタを設けることなしに水道の元圧を推測
し、高圧時には第４図ア、低圧時には第４図イの様な関
数を選択し、水圧に応じた最適制御を行なうものであ
る。尚、他の実施例として、水量センサ17の代わりに圧
力センサなど、また回転式の流量調整弁の代わりにニー
ドル弁方式など他の方式でもよい。さらに、流量調整弁
の開度を知る方法としてマイクロスイッチやポテンショ
メータなどを取り付けてもよい。モータはAC、DCどちら
でも可能であるが、DCモータの場合は弁の制御速度を調
整するのに一定時間に一定周期のパルスを出し、そのパ
ルスの数で制御することや、パルスの巾や高さを変える
ことで制御する事などが可能である。また、バルブ16を
全閉状態でも一定開口面積がある構造にする事により、
洗浄開始時に電磁弁４を開き、その時のセンサ17の値を
検知するだけで同様な制御が可能である。In the present invention, the water amount sensor 17 is used to estimate the source pressure of the water supply without providing a center for detecting the water pressure at the position of the valve 13, and the function as shown in FIG. This is to select and perform optimum control according to the water pressure. As another embodiment, a pressure sensor or the like may be used instead of the water amount sensor 17, and a needle valve method or the like may be used instead of the rotary flow rate adjusting valve. Further, a micro switch, a potentiometer, or the like may be attached as a method of knowing the opening of the flow rate adjusting valve. The motor can be either AC or DC, but in the case of a DC motor, to adjust the control speed of the valve, a pulse with a fixed cycle is output at a fixed time and the pulse width and pulse width are controlled. It is possible to control by changing the height. Also, by making the valve 16 have a certain opening area even when it is fully closed,
The same control can be performed only by opening the solenoid valve 4 at the start of cleaning and detecting the value of the sensor 17 at that time.
従って、本発明は上記構成よりなるので、制御回路に高
圧時、低圧時の複数の関数を記憶させ使い分けることに
より、任意の元水圧において使用勝手が良好で且つ不快
感を与えない水道直結形温水洗浄器が提供できる。Therefore, since the present invention has the above-mentioned configuration, by directly storing a plurality of functions at high pressure and low pressure in the control circuit and using them properly, it is easy to use at any source water pressure and does not cause discomfort. A washer can be provided.
また、従来の水道直結形温水洗浄器の構造を変更するこ
となしに実現可能であるため、原価的に大変有利であ
る。Further, since it can be realized without changing the structure of the conventional hot water washer directly connected to the water supply, it is very advantageous in terms of cost.
【図面の簡単な説明】 第１図は本発明の実施例を示す系統図、第２図は流量調
整弁の実施例を示す断面図、第３図は流量調整弁のバル
ブを示す斜視図、第４図は本発明の一実施例を示す流量
調整弁の水量制御関数の図、第５図は一定水圧時で、水
量制御関数を変えた時の水量制御特性図、第６図は流量
調整弁の水量制御関数の図、第７図は同一関数で水圧を
変えた時の水量制御特性図、第８図は流量調整弁の開度
と流量の関係を示す図、第９図は従来の実施例を示す系
統図である。 符号の説明 １……給水パイプ、２……継手 ３……止水弁、４……電磁弁 ５……流量調整弁、６……制御回路 ７……センサ、８……温水タンク ９……ノズル、10……ガバナ 11……オリフィス、12……直流モータ 13……バルブ、14……オーリング 15……減速機、16……スリット 17……水量センサBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a system diagram showing an embodiment of the present invention, FIG. 2 is a sectional view showing an embodiment of a flow rate adjusting valve, and FIG. 3 is a perspective view showing a valve of the flow rate adjusting valve. FIG. 4 is a diagram of a water amount control function of a flow rate adjusting valve showing an embodiment of the present invention, FIG. 5 is a water amount control characteristic diagram when the water amount control function is changed at a constant water pressure, and FIG. FIG. 7 is a diagram of the water flow control function of the valve, FIG. 7 is a water flow control characteristic diagram when the water pressure is changed by the same function, FIG. 8 is a diagram showing the relationship between the opening of the flow rate adjusting valve and the flow rate, and FIG. It is a systematic diagram showing an example. Explanation of symbols 1 ... Water supply pipe, 2 ... Fitting 3 ... Water stop valve, 4 ... Solenoid valve 5 ... Flow control valve, 6 ... Control circuit 7 ... Sensor, 8 ... Hot water tank 9 ... Nozzle, 10 …… Governor 11 …… Orifice, 12 …… DC motor 13 …… Valve, 14 …… O-ring 15 …… Reducer, 16 …… Slit 17 …… Water volume sensor
フロントページの続き (56)参考文献 特開 昭62−107126（ＪＰ，Ａ) 特開 昭59−109918（ＪＰ，Ａ) 特開 昭57−120121（ＪＰ，Ａ) 特開 昭56−74719（ＪＰ，Ａ) 特開 昭54−145878（ＪＰ，Ａ) 特開 昭53−391（ＪＰ，Ａ) 特開 昭61−228511（ＪＰ，Ａ) 特開 昭61−216001（ＪＰ，Ａ) 特開 昭60−168218（ＪＰ，Ａ) 特開 昭59−103116（ＪＰ，Ａ) 特開 昭59−62920（ＪＰ，Ａ) 特開 昭58−166196（ＪＰ，Ａ) 特開 昭58−107913（ＪＰ，Ａ) 特開 昭57−187715（ＪＰ，Ａ) 特開 昭53−9988（ＪＰ，Ａ) 実開 昭49−78699（ＪＰ，Ｕ) 実開 昭62−158509（ＪＰ，Ｕ) 実開 昭60−174903（ＪＰ，Ｕ) 実開 昭52−170198（ＪＰ，Ｕ) 実開 昭60−601（ＪＰ，Ｕ) 特公 昭47−51513（ＪＰ，Ｂ１) 実公 平６−26600（ＪＰ，Ｙ２)Continuation of the front page (56) Reference JP 62-107126 (JP, A) JP 59-109918 (JP, A) JP 57-120121 (JP, A) JP 56-74719 (JP , A) JP 54-145878 (JP, A) JP 53-391 (JP, A) JP 61-228511 (JP, A) JP 61-216001 (JP, A) JP 60-168218 (JP, A) JP 59-103116 (JP, A) JP 59-62920 (JP, A) JP 58-166196 (JP, A) JP 58-107913 (JP, A) JP-A-57-187715 (JP, A) JP-A-53-9988 (JP, A) Real-open Sho-49-78699 (JP, U) Actual-open Sho-62-158509 (JP, U) Actual-open Sho-60 -174903 (JP, U) Actually open 52-170198 (JP, U) Actually open 60-601 (JP, U) Special public 47-51513 (JP, B1) Actual public 6-26600 (JP, Y2) )
Claims (1)
連通する水通路の途中に流量調整弁と上記水通路中を流
れる水量又は水圧を検知するセンサを設けるとともに、
該センサの検知結果に基づき上記流量調整弁の開度を調
整する制御回路を備えた水道直結形温水洗浄器におい
て、上記流量調整弁の開度を制御する高水圧用制御関数
及び低水圧用制御関数を有するとともに、洗浄開始時に
上記流量調整弁を一定量開弁させ上記センサにて水道圧
を測定し、該水道圧が設定水圧より高圧か低圧かにより
前記高圧用又は低圧用制御関数を選択決定することを特
徴とする水道直結形温水洗浄器。1. A flow control valve and a sensor for detecting the amount or pressure of water flowing through the water passage are provided in the middle of a water passage communicating with a nozzle having a washing water discharge hole at the tip.
In a direct water supply type hot water washer equipped with a control circuit for adjusting the opening degree of the flow rate adjusting valve based on the detection result of the sensor, a high water pressure control function and a low water pressure control function for controlling the opening degree of the flow rate adjusting valve. In addition to having a function, at the start of cleaning, the flow rate control valve is opened by a certain amount and the water pressure is measured by the sensor, and the control function for high pressure or low pressure is selected depending on whether the water pressure is higher or lower than the set water pressure. A hot water washer directly connected to the tap, which is characterized by making a decision.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62208825A JPH07108390B2 (en) | 1987-08-21 | 1987-08-21 | Directly connected hot water washer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62208825A JPH07108390B2 (en) | 1987-08-21 | 1987-08-21 | Directly connected hot water washer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6451179A JPS6451179A (en) | 1989-02-27 |
| JPH07108390B2 true JPH07108390B2 (en) | 1995-11-22 |
Family
ID=16562734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62208825A Expired - Fee Related JPH07108390B2 (en) | 1987-08-21 | 1987-08-21 | Directly connected hot water washer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07108390B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2910461B2 (en) * | 1992-11-12 | 1999-06-23 | 株式会社イナックス | Cleaning strength control method for sanitary washing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0660504B2 (en) * | 1985-11-01 | 1994-08-10 | 松下電器産業株式会社 | Sanitary washing equipment |
-
1987
- 1987-08-21 JP JP62208825A patent/JPH07108390B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6451179A (en) | 1989-02-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |