WO2019021556A1 - Water-collection dispenser and correction method therefor - Google Patents

Water-collection dispenser and correction method therefor Download PDF

Info

Publication number
WO2019021556A1
WO2019021556A1 PCT/JP2018/016629 JP2018016629W WO2019021556A1 WO 2019021556 A1 WO2019021556 A1 WO 2019021556A1 JP 2018016629 W JP2018016629 W JP 2018016629W WO 2019021556 A1 WO2019021556 A1 WO 2019021556A1
Authority
WO
WIPO (PCT)
Prior art keywords
volume
flow rate
control valve
water
flow
Prior art date
Application number
PCT/JP2018/016629
Other languages
French (fr)
Japanese (ja)
Inventor
岡部　修一
尾崎　大介
杏助 松村
隆文 星野
正崇 飛彈
清吉 浅野
Original Assignee
オルガノ株式会社
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 オルガノ株式会社 filed Critical オルガノ株式会社
Priority to CN201880047964.8A priority Critical patent/CN110914650B/en
Publication of WO2019021556A1 publication Critical patent/WO2019021556A1/en

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F13/00—Apparatus for measuring by volume and delivering fluids or fluent solid materials, not provided for in the preceding groups

Definitions

  • the present invention relates to a water dispenser connected to a pure water production apparatus and the like to discharge pure water and the like according to demand, and in particular, correction of the water collection amount by the water dispenser when the water dispenser has a quantitative water collecting function About.
  • the water dispenser includes a nozzle for discharging pure water, and an open / close valve provided in a path of pure water to the nozzle to supply pure water to the nozzle and to shut off the supply.
  • the water dispenser is generally provided at a location apart from the main body of the pure water producing apparatus, and connected to the pure water outlet of the pure water producing apparatus main body by piping.
  • a solenoid valve is often used as the on-off valve, and when using a solenoid valve, the solenoid valve is controlled by a push button switch that can be operated by a finger or a foot switch that can be operated by a foot to discharge pure water from the nozzle . Furthermore, in the water sampling dispenser, a combination of a flow sensor and a solenoid valve is specified by opening the solenoid valve until the accumulated value of the flow measured by the flow sensor reaches a specified value when one switch operation is performed. Many are equipped with a quantitative water collection function that enables the collection of a volume of pure water.
  • the solenoid valve is opened and closed based on the detection result of the flow sensor, but the discharge amount and the actual intended discharge rate due to the inherent detection error of the flow sensor And the discharge amount of the liquid may be different. Therefore, the relationship between the measured value by the flow rate sensor and the actual flow rate is checked in advance so that the liquid can be discharged with the discharge rate specified by the user or set in advance in the water collection dispenser. It is necessary to control the solenoid valve by correcting the measured value by the flow rate sensor based on
  • Patent Document 1 describes a method of calculating a correction coefficient for a flow meter that outputs a pulse according to a flow rate passed, and for a specific non-zero flow rate, the method for calculating the flow rate according to the number of pulses from the flow meter It is disclosed that the ratio of the flow rate flowing through the flow meter is obtained and the ratio is made to be the correction coefficient K. Once the correction factor K is determined, it is sufficient to use the flow rate based on the pulse value from the flow meter multiplied by the correction factor K as the measurement value of the flow rate.
  • An object of the present invention is to provide a water dispenser having a quantitative water collecting function, which can perform water collection with a high accuracy volume, and a correction method thereof.
  • the water collection dispenser of the present invention is a water collection dispenser used for water collection of pure water, and is provided in a pipe which is supplied with pure water from a pure water producing device and is communicated with a nozzle for discharging pure water, and piping
  • the first amount which is the amount actually collected by the first control and the second amount which is the amount actually collected by the second control are input, Based on the second volume, the first amount and the second amount A process of calculating two parameters specifying a linear expression representing the relationship between the detection result of the quantity sensor and the volume after correction, and the correction result of the flow sensor by the two parameters
  • the correction method of the water dispenser according to the present invention includes the steps of supplying the pure water from the pure water production apparatus and connecting the nozzle communicating with the nozzle for discharging the pure water, the flow control valve provided in the pipe, and the flow control valve in the pipe.
  • Express the relationship between the detection result and the corrected volume Has a process for calculating the two parameters identifying the following equation, the.
  • two parameters for specifying the linear expression representing the relationship between the detection result of the flow rate sensor provided in the water dispenser and the volume after correction are calculated, and the correction is performed based on this.
  • the water sampling can be performed with high accuracy as compared to the case of so-called one-point correction based on.
  • FIG. 1 is a flow sheet showing a state in which the water dispenser of the embodiment of the present invention is combined with a pure water manufacturing apparatus.
  • the pure water production apparatus 50 includes a pure water production unit 51 which is supplied with tap water or the like to produce pure water, and a main control unit 52 which controls the operation of the pure water production unit 51.
  • the pure water production unit 51 comprises, for example, a primary pure water production apparatus for producing primary pure water from feed water, provided with a reverse osmosis membrane and an ion exchange apparatus, an ion exchange apparatus, an ultrafiltration membrane, an ultraviolet oxidation apparatus, etc. It comprises a subsystem having a circulating purification system to further increase the purity of primary pure water. Although various sensors (not shown), a pump (not shown), a valve (not shown), etc.
  • the main controller 52 receives signals from the sensors, By controlling a pump (not shown) and a valve (not shown) based on the operation of the pure water production unit 51 is controlled.
  • a plurality of outlet ports 53 for supplying pure water to the water dispenser 10 are connected to the outlet of the pure water producing unit 51.
  • the outlet port 53 is a port connected to the water dispenser 10 in the pure water production apparatus 50, and the water dispenser 10 is connected to any outlet port 53 by, for example, a flexible pipe 55. Be done.
  • three outlet ports 53 are provided, and a total of three water dispensers 10 are connected to the pure water producing device 50 by connecting the water dispensers 10 to each of them.
  • the number of outlet ports 53 is not limited to three, and the number of water dispensers 10 connected to the pure water producing apparatus 50 can be arbitrarily increased or decreased within the range of the number of outlet ports 53.
  • FIG. 2 shows the appearance of the water dispenser 10.
  • the water dispenser 10 is roughly divided into a head portion 10a, a main body portion 10b, and a support column 10c extending vertically upward from the main body portion 10b and removably holding the head 10a.
  • the main body portion 10 b is connected by a flexible pipe 14.
  • a head portion 10a which can be held by a user and moved to a desired position is provided, and a nozzle 16 which actually becomes a pouring spout of pure water is provided in the head portion 10a.
  • the head portion 10a is provided with a handle 25 or a handle for the user to hold.
  • the holding position of the head 10a in the support 10c can be changed.
  • the post 10c needs to have a sufficient length.
  • the head portion 10 a discharges from the nozzle 16 pure water sent from the main body portion 10 b through the pipe 14, and as shown in FIG. 1, a flow path connected to the pipe 14 in addition to the nozzle 16.
  • the nozzle 16 is provided at the end of the flow path 15.
  • the head unit 10a includes a switch 18 operated by the user in order to discharge pure water according to the user's demand.
  • the head 10 a is provided with a button 26 at a position where the user holding the handle 25 can easily operate it with his finger.
  • the button 26 is mechanically connected to the switch 18 (see FIG. 1), and the switch 18 is operated by operating the button 26.
  • a pipe 11 is provided in the main body 10b, one end of the pipe 11 is connected to a pipe 55 from the pure water producing apparatus 50, and the other end is connected to a pipe 14 to the head 10a.
  • the flow rate sensor 12 and the flow rate control valve 13 are provided in the pipe 11 in this order from the upstream side, that is, from the side closer to the pure water production apparatus 50.
  • the control unit 20 that controls the operation of the water dispenser 10 and the operation panel 19 connected to the control unit 20 are provided in the main body unit 10 b.
  • the flow rate control valve 13 is, for example, an electromagnetic type, and can control the opening and closing of the valve according to a signal from the control unit 20 and can change the flow rate of pure water passing through the valve.
  • the flow rate sensor 12 is, for example, a pulse type that outputs an electric pulse each time a fixed volume (volume) of liquid flows.
  • the operation panel 19 receives, for example, settings of water collection amount and water collection mode from the user, and performs necessary display for the user.
  • the water sampling mode includes an arbitrary water sampling mode enabling water sampling of an arbitrary volume, and a water sampling mode based on a quantitative water sampling function, wherein quantitative water ejection from a nozzle 16 of a volume specified by the user is performed. There may be a water mode, and other water sampling modes may be provided.
  • the control unit 20 controls the whole of the water dispenser 10, for example, receives a water collection request from the user input through the switch 18 of the head unit 10a, and the water collection mode is a quantitative water collection mode. In some cases, by opening the flow control valve 13 until the accumulated value of the flow detected by the flow sensor 12, that is, the volume value becomes the set value, the amount of pure water indicated by the set value is transferred to the head 10a. Control to send water. Details of water sampling in the quantitative water sampling mode will be described later. When the water sampling mode is the arbitrary volume water sampling mode, the control unit 20 performs control to open the flow control valve 13 only while the switch 18 is operated.
  • the control unit 20 In the case of the arbitrary amount water sampling mode, the user can designate the flow rate of pure water from the nozzle via the operation panel 19, that is, the discharge amount per unit time, and the control unit 20 becomes the designated flow rate. To control the flow control valve 13. This is because there are cases where speed is important, such as water collection to a washing bottle, and accuracy of water collection operation, such as water collection up to the marked line to the measuring flask, is important. Furthermore, the control unit 20 is connected to the main controller 52 of the pure water producing apparatus 50 by a wire shown by a broken line in the figure, and the main controller 52 produces information about the operating condition of the pure water producing apparatus 50, in particular, Acquire quality data such as total organic carbon (TOC) value, resistivity, and temperature value of pure water. The control unit 20 displays the acquired water quality data on the operation panel 19 in a predetermined format.
  • TOC total organic carbon
  • the pipe 11, the flow sensor 12, the flow control valve 13, and the control unit 20 are provided inside the housing 21 shown in FIG. 2.
  • the operation panel 19 has a flat shape, and is attached to the housing 21 via a hinge 23 at one end thereof.
  • a touch panel 22 in which a liquid crystal display panel and a touch sensor are integrated is provided on one surface of the operation panel 19.
  • the touch panel 22 functions as a display unit for displaying to the user, and receives input from the user when the user touches a predetermined position on the touch panel 22.
  • the control unit 20 opens the flow control valve 13 and counts the pulses from the flow sensor 12 and passes through it.
  • the volume is calculated, and when the passing volume reaches the set value L, the flow control valve 13 is closed. Therefore, the accuracy of the volume of pure water discharged from the nozzle 16 depends on the accuracy of the flow rate sensor 12.
  • a correction parameter for the pulse count value from the flow rate sensor 12 is determined.
  • the volume X represented by the count value of pulses from the flow sensor 12 is taken as the volume X
  • the volume after correction that better represents the volume of the liquid actually flowing through the flow sensor 12 is taken as equation (1)
  • Two correction parameters a and b are obtained so that the relationship of the linear expression shown by.
  • the water dispenser 10 is operated to discharge pure water at two different volume values, and in each case, the volume of pure water actually discharged is measured, and based on the measurement results.
  • the correction parameters a and b are obtained.
  • FIG. 3 shows a specific procedure for obtaining the correction parameters a and b.
  • the volume A 1 and the set value L in step 101 the pure water is ejected by operating the water sampling dispenser 10 at this setting value L in step 102.
  • the discharged pure water is collected, for example, in a measuring cylinder, and its volume is measured.
  • B 1 be the volume actually measured.
  • the set value L different volumes A 2 is the volume A 1, by discharging pure water by operating the water sampling dispenser 10 by the set value L in step 105, the net was discharged the volume B 2 of water is measured in step 106.
  • Based on the correction parameters a and b are determined.
  • the control unit 20 executes the processing of steps 101, 102, 104, 105, and 107 of the processing shown in FIG.
  • a message prompting the user to execute the processes of steps 103 and 106 is displayed on the screen 19, and the input from the user about the measured volumes B 1 and B 2 is accepted.
  • the set volumes A 1 and A 2 may not both be 0 and be different from each other, but one of the volumes is a water collection volume often used in this water collection dispenser 10 or a little larger than that Preferably, the other volume is a relatively small value.
  • a 2 is 0 so that a sufficient number of pulses can be obtained. It is preferable to set a value larger than 1 ⁇ V.
  • the values of the volumes A 1 and A 2 may be programmed in the control unit 20 in advance, or may be input in advance by the user. If adopted water is 1000mL often used in water sampling dispenser 10, A 1 is set to, for example, 1100 mL, A 2 is set to, for example, 100 mL.
  • steps 102 and 105 are both for discharging pure water of a volume indicated by the set value L from the nozzle 16, and are basically the same process as water collection in the quantitative water collection mode.
  • FIG. 4 is a flowchart showing a process of discharging pure water of a volume represented by the set value L. It is assumed that the setting value L has already been set.
  • the volume measurement value P is cleared, ie, made zero.
  • the volume measurement value P is a value of the volume obtained by counting pulses from the flow rate sensor 12, that is, a value before it is corrected by the correction parameters a and b.
  • the flow control valve 13 is fully opened. As a result, discharge of pure water from the nozzle 16 is started, and the flow rate sensor 12 continues to generate a pulse of flow rate measurement.
  • the control unit 20 continues counting the pulses from the flow rate sensor 12 and, as shown in step 113, a value obtained by subtracting the parameter ⁇ from the set value L and a volume measurement value P based on the counting of the pulses. Compare as needed.
  • step 113 is repeated until P ⁇ L ⁇ , that is, until the volume measurement value P reaches the set value L minus the parameter ⁇ .
  • the control unit 20 reduces the opening degree of the flow control valve 13 to reduce the flow rate of pure water flowing through the flow control valve 13.
  • L- ⁇ is a threshold for determining the timing at which the opening of the flow control valve 13 is narrowed.
  • the value of ⁇ is a positive value determined based on the size and configuration of the pipe 11, the flow rate sensor 12, and the flow rate control valve 13.
  • the value of ⁇ is set to about several percent of the set value L.
  • the pulse type can be equivalent to several tens to several hundreds of pulses.
  • ⁇ can be 70 mL.
  • step 115 the control unit 20 determines whether or not the volume measurement value P has reached the set value L, and until step S ⁇ L, ie, until the volume measurement value P reaches the set value L, step 115. repeat.
  • the control unit 20 immediately closes the flow control valve 13 completely in step 116.
  • the opening of the flow control valve 13 is narrowed in advance, no overshoot phenomenon is caused, and when the volume measurement value P reaches the set value L, the nozzle 16 of pure water is completely removed. It is possible to stop the discharge of
  • the flow rate is maximized at the start of discharge of pure water, and the flow rate is narrowed immediately before stopping the discharge, so that the discharge time can not be increased unnecessarily and with an accurate amount. Can be discharged.
  • the volume Q after correction may optionally be calculated based on the correction parameters a and b in the arbitrary water sampling mode, and the calculated value of Q Is displayed on the operation panel 19 to further enhance the convenience of the user.
  • each water sampling dispenser 10 determines the correction parameter by inputting the command of the correction parameter determination in any one of the water collection dispensers 10 It may transition to the mode for In this case, the command is transferred from the water dispenser 10 to which the command is input to the other water dispenser 10 via the main control device 52 of the pure water producing apparatus 50.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Measuring Volume Flow (AREA)

Abstract

This water-collection dispenser has a flow rate adjustment valve and flow rate sensor that are provided in series, and the water-collection dispenser carries out a first process in which the flow rate adjustment valve is opened until the volume detected by the flow rate sensor reaches a first volume and a second process in which the flow rate adjustment valve is opened until the volume detected by the flow rate sensor reaches a second volume. Two parameters for specifying a first-order equation expressing the relationship between a flow rate sensor detection result and a corrected volume are calculated on the basis of the first volume, second volume, the actual water collected in the first process, and the actual water collected in the second process. When a fixed quantity of water is collected, the detection results of the flow rate sensor are corrected on the basis of the two parameters.

Description

採水ディスペンサー及びその補正方法Water dispenser and correction method thereof
　本発明は、純水製造装置などに接続されて需要に応じて純水などを吐出する採水ディスペンサーに関し、特に、採水ディスペンサーが定量採水機能を有するときの採水ディスペンサーによる採水量の補正に関する。 The present invention relates to a water dispenser connected to a pure water production apparatus and the like to discharge pure water and the like according to demand, and in particular, correction of the water collection amount by the water dispenser when the water dispenser has a quantitative water collecting function About.
　研究機関などにおいて純水を利用する場合、比較的小型の純水製造装置を用いて純水を製造することが多い。そしてユースポイントにおいて純水を例えばビーカー、フラスコ、試験管などに採水するために、純水製造装置に接続する採水ディスペンサーが広く用いられている。採水ディスペンサーは、純水を吐出するノズルと、ノズルへの純水の経路に設けられてノズルに対して純水を供給し、またこの供給を遮断する開閉弁とを備えている。採水ディスペンサーは、通常、純水製造装置の本体とは離れた場所に設けられ、配管によって純水製造装置本体の純水出口に接続される。利用者が開閉弁を操作することによってノズルから純水が吐出し、これにより、利用者はその必要に応じた量で純水を採水することができる。開閉弁としては電磁弁が用いられることが多く、電磁弁を用いる場合には、指で操作できる押しボタンスイッチあるいは足によって操作できる足踏みスイッチ等により電磁弁を制御し、ノズルから純水を吐出させる。さらに採水ディスペンサーでは、流量センサーと電磁弁とを組み合わせ、１回のスイッチ操作があったときに流量センサーによって計測される流量の累積値が規定値に達するまで電磁弁を開放することにより、規定容量の純水を採水できるようにする定量採水機能を備えるものが多い。 When pure water is used in research institutes and the like, pure water is often produced using a relatively small pure water production apparatus. And in order to collect pure water into a beaker, a flask, a test tube etc., for example at a use point, the water collection dispenser connected to a pure water manufacturing apparatus is widely used. The water dispenser includes a nozzle for discharging pure water, and an open / close valve provided in a path of pure water to the nozzle to supply pure water to the nozzle and to shut off the supply. The water dispenser is generally provided at a location apart from the main body of the pure water producing apparatus, and connected to the pure water outlet of the pure water producing apparatus main body by piping. When the user operates the on-off valve, the pure water is discharged from the nozzle, whereby the user can collect the pure water in an amount according to the necessity. A solenoid valve is often used as the on-off valve, and when using a solenoid valve, the solenoid valve is controlled by a push button switch that can be operated by a finger or a foot switch that can be operated by a foot to discharge pure water from the nozzle . Furthermore, in the water sampling dispenser, a combination of a flow sensor and a solenoid valve is specified by opening the solenoid valve until the accumulated value of the flow measured by the flow sensor reaches a specified value when one switch operation is performed. Many are equipped with a quantitative water collection function that enables the collection of a volume of pure water.
　定量採水機能を有する採水ディスペンサーでは、流量センサーでの検出結果に基づいて電磁弁を開閉することになるが、流量センサーにおける固有の検出誤差などのために、吐出を意図した吐出量と実際の液体の吐出量とが異なる場合がある。そこで、利用者が指定した、あるいは採水ディスペンサーに予め設定されている吐出量で液体を吐出できるように、予め流量センサーでの測定値と実際の流量との関係を調べておいて、この関係に基づいて流量センサーでの測定値に対して補正を行い、電磁弁を制御する必要がある。 In the water sampling dispenser with the water sampling function, the solenoid valve is opened and closed based on the detection result of the flow sensor, but the discharge amount and the actual intended discharge rate due to the inherent detection error of the flow sensor And the discharge amount of the liquid may be different. Therefore, the relationship between the measured value by the flow rate sensor and the actual flow rate is checked in advance so that the liquid can be discharged with the discharge rate specified by the user or set in advance in the water collection dispenser. It is necessary to control the solenoid valve by correcting the measured value by the flow rate sensor based on
　特許文献１には、通過した流量に応じたパルスを出力する流量計に対する補正係数の算出方法であって、ゼロでないある特定の１つの流量に関して、流量計からのパルス数に応じた流量に対する実際に流量計を流れた流量の比を求めて、この比を補正係数Ｋとすることが開示されている。いったん補正係数Ｋが定まれば、それ以降は、流量計からのパルス値に基づく流量に補正係数Ｋを乗じたものを流量の測定値とすればよいことになる。 Patent Document 1 describes a method of calculating a correction coefficient for a flow meter that outputs a pulse according to a flow rate passed, and for a specific non-zero flow rate, the method for calculating the flow rate according to the number of pulses from the flow meter It is disclosed that the ratio of the flow rate flowing through the flow meter is obtained and the ratio is made to be the correction coefficient K. Once the correction factor K is determined, it is sufficient to use the flow rate based on the pulse value from the flow meter multiplied by the correction factor K as the measurement value of the flow rate.
特開平２－２１８９２３号公報Japanese Patent Laid-Open No. 2-218923
　定量採水機能を有する採水ディスペンサーでは、意図した採水量で純水を採水するためには、採水ディスペンサーに設けられる流量センサーでの測定値に対して補正を行う必要があるが、特許文献１に記載された方法で補正を行った場合には、採水ディスペンサーの定量採水機能に要求される程度に正確な量で採水を行うことができないことがある。 In the water sampling dispenser having a quantitative water collection function, in order to collect pure water with the intended water collection amount, it is necessary to correct the measurement value of the flow rate sensor provided in the water sampling dispenser. When correction is performed by the method described in Document 1, it may not be possible to collect water in an amount that is accurate to the extent required for the quantitative water collection function of the water collection dispenser.
　本発明の目的は、定量採水機能を有する採水ディスペンサーであって、高い精度の体積で採水を行うことができる採水ディスペンサーとその補正方法とを提供することにある。 An object of the present invention is to provide a water dispenser having a quantitative water collecting function, which can perform water collection with a high accuracy volume, and a correction method thereof.
　本発明の採水ディスペンサーは、純水の採水に用いられる採水ディスペンサーであって、純水製造装置から純水が供給され、純水を吐出するノズルに連通する配管と、配管に設けられた流量調節弁と、配管において流量調節弁に対して直列に設けられた流量センサーと、流量調節弁を制御する制御部と、を有し、制御部は、流量センサーの検出結果から得られる体積が第１の体積となるまで流量調節弁を開く第１の制御と、流量センサーの検出結果から得られる体積が第１の体積とは異なる第２の体積となるまで流量調節弁を開く第２の制御と、第１の制御によって実際に採水された量である第１の量と第２の制御によって実際に採水された量である第２の量とが入力されると、第１の体積、第２の体積、第１の量及び第２の量に基づいて流量センサーの検出結果と補正後の体積との関係を表わす一次式を特定する２つのパラメータを算出する処理と、２つのパラメータによって流量センサーの検出結果を補正しながら、補正後の検出結果に基づき流量調節弁を流れる体積が指定された体積となるまで流量調節弁を開弁する定量採水モードの制御と、を実行する。 The water collection dispenser of the present invention is a water collection dispenser used for water collection of pure water, and is provided in a pipe which is supplied with pure water from a pure water producing device and is communicated with a nozzle for discharging pure water, and piping The flow rate control valve, a flow rate sensor provided in series with the flow rate control valve in the pipe, and a control unit for controlling the flow rate control valve, and the control unit determines the volume obtained from the detection result of the flow rate sensor A first control to open the flow control valve until the first volume is reached, and a second control to open the flow control valve until the volume obtained from the detection result of the flow sensor is a second volume different from the first volume When the first amount which is the amount actually collected by the first control and the second amount which is the amount actually collected by the second control are input, Based on the second volume, the first amount and the second amount A process of calculating two parameters specifying a linear expression representing the relationship between the detection result of the quantity sensor and the volume after correction, and the correction result of the flow sensor by the two parameters, based on the detection result after correction Control of a water sampling mode in which the flow control valve is opened until the volume flowing through the flow control valve reaches a designated volume.
　本発明の採水ディスペンサーの補正方法は、純水製造装置から純水が供給され、純水を吐出するノズルに連通する配管と、配管に設けられた流量調節弁と、配管において流量調節弁に対して直列に設けられた流量センサーとを備え、定量採水機能を有する採水ディスペンサーの補正方法であって、流量センサーの検出結果から得られる体積が第１の体積となるまで流量調節弁を開く第１の処理と、流量センサーの検出結果から得られる体積が第１の体積とは異なる第２の体積となるまで流量調節弁を開く第２の処理と、第１の体積と、第２の体積と、第１の処理によって実際に採水された量である第１の量と、第２の処理によって実際に採水された量である第２の量とに基づいて、流量センサーの検出結果と補正後の体積との関係を表わす一次式を特定する２つのパラメータを算出する処理と、を有する。 The correction method of the water dispenser according to the present invention includes the steps of supplying the pure water from the pure water production apparatus and connecting the nozzle communicating with the nozzle for discharging the pure water, the flow control valve provided in the pipe, and the flow control valve in the pipe. Is a correction method of a water collection dispenser having a flow rate sensor provided in series and having a quantitative water collection function, and the flow rate control valve until the volume obtained from the detection result of the flow rate sensor becomes the first volume A first process to open, a second process to open the flow control valve until the volume obtained from the detection result of the flow rate sensor becomes a second volume different from the first volume, a first volume, and a second Of the flow rate sensor based on the volume of the water, the first amount which is the amount actually collected by the first treatment, and the second amount which is the amount actually collected by the second treatment. Express the relationship between the detection result and the corrected volume Has a process for calculating the two parameters identifying the following equation, the.
　本発明によれば、採水ディスペンサーに備えられる流量センサーの検出結果と補正後の体積との関係を表わす一次式を特定する２つのパラメータを算出し、これに基づいて補正を行うので、比例式に基づくいわゆる１点補正の場合に比べ、高い精度で採水を行うことができる。 According to the present invention, two parameters for specifying the linear expression representing the relationship between the detection result of the flow rate sensor provided in the water dispenser and the volume after correction are calculated, and the correction is performed based on this. The water sampling can be performed with high accuracy as compared to the case of so-called one-point correction based on.
純水製造装置及び採水ディスペンサーの構成を示すフローシートである。It is a flow sheet which shows the composition of a pure water manufacture device and a water dispenser. 実施の一形態の採水ディスペンサーの外観の一例を示す斜視図である。It is a perspective view showing an example of the appearance of the water dispenser of one form of an embodiment. 流量センサーに対する補正パラメータの決定手順を示すフローチャートである。It is a flowchart which shows the determination procedure of the correction | amendment parameter with respect to a flow sensor. 定量採水モードでの動作を示すフローチャートである。It is a flowchart which shows the operation | movement in quantitative water sampling mode.
　次に本発明の実施の形態について、図面を参照して説明する。本発明に基づく採水ディスペンサーは、定量採水機能を備えており、例えば、純水製造装置と組み合わされて純水を採水するために用いられるものである。図１は、本発明の実施の一形態の採水ディスペンサーを純水製造装置に組み合わせた状態を示すフローシートである。 Next, embodiments of the present invention will be described with reference to the drawings. The water dispenser according to the present invention has a quantitative water collecting function, and is used, for example, for collecting pure water in combination with a pure water producing apparatus. FIG. 1 is a flow sheet showing a state in which the water dispenser of the embodiment of the present invention is combined with a pure water manufacturing apparatus.
　純水製造装置５０は、水道水などが供給されて純水を製造する純水製造部５１と、純水製造部５１の動作を制御する主制御装置５２とを備えている。純水製造部５１は、例えば、逆浸透膜やイオン交換装置を備えて供給水から一次純水を製造する一次純水製造装置と、イオン交換装置や限外濾過膜、紫外線酸化装置などからなる循環精製系を有して一次純水の純度をさらに高めるサブシステムとから構成される。純水製造部５１内には各種のセンサー類（不図示）、ポンプ（不図示）及び弁（不図示）なども設けられるが、主制御装置５２は、センサー類からの信号を受け取り、これに基づいてポンプ（不図示）や弁（不図示）を制御することによって、純水製造部５１の動作の制御を行なう。純水製造部５１の出口には、純水を採水ディスペンサー１０に供給するための複数の出口ポート５３が接続している。出口ポート５３は、純水製造装置５０における採水ディスペンサー１０との接続位置となるポートであり、採水ディスペンサー１０は、例えば、可撓性を有する配管５５によって、いずれかの出口ポート５３に接続される。図示した例では、出口ポート５３が３個設けられており、その各々に採水ディスペンサー１０が接続することによって、合計３台の採水ディスペンサー１０が純水製造装置５０に接続されている。もちろん、出口ポート５３の数は３に限られるものではなく、純水製造装置５０に接続される採水ディスペンサー１０の数も、出口ポート５３の個数の範囲内で任意に増減することができる。 The pure water production apparatus 50 includes a pure water production unit 51 which is supplied with tap water or the like to produce pure water, and a main control unit 52 which controls the operation of the pure water production unit 51. The pure water production unit 51 comprises, for example, a primary pure water production apparatus for producing primary pure water from feed water, provided with a reverse osmosis membrane and an ion exchange apparatus, an ion exchange apparatus, an ultrafiltration membrane, an ultraviolet oxidation apparatus, etc. It comprises a subsystem having a circulating purification system to further increase the purity of primary pure water. Although various sensors (not shown), a pump (not shown), a valve (not shown), etc. are provided in the pure water production unit 51, the main controller 52 receives signals from the sensors, By controlling a pump (not shown) and a valve (not shown) based on the operation of the pure water production unit 51 is controlled. A plurality of outlet ports 53 for supplying pure water to the water dispenser 10 are connected to the outlet of the pure water producing unit 51. The outlet port 53 is a port connected to the water dispenser 10 in the pure water production apparatus 50, and the water dispenser 10 is connected to any outlet port 53 by, for example, a flexible pipe 55. Be done. In the illustrated example, three outlet ports 53 are provided, and a total of three water dispensers 10 are connected to the pure water producing device 50 by connecting the water dispensers 10 to each of them. Of course, the number of outlet ports 53 is not limited to three, and the number of water dispensers 10 connected to the pure water producing apparatus 50 can be arbitrarily increased or decreased within the range of the number of outlet ports 53.
　次に、採水ディスペンサー１０について説明する。図２は、採水ディスペンサー１０の外観を示している。ただし図２では、純水製造装置との接続に用いられる配管５５や各種の配線は示されていない。採水ディスペンサー１０は、大別すると、ヘッド部１０ａと、本体部１０ｂと、本体部１０ｂから垂直上方に延びてヘッド１０ａを取り外し可能に保持する支柱１０ｃとから構成されており、ヘッド部１０ａと本体部１０ｂとは可撓性を有する配管１４によって接続されている。採水ディスペンサー１０の使用形態として、例えば、実験台の上に整列して置かれた多数の試験管に対して次々と純水を注ぐために用いる、というものがある。このような用途に対応するために、ユーザーによって把持されて所望の位置に動かすことができるヘッド部１０ａを設けて、実際に純水の注ぎ口となるノズル１６をヘッド部１０ａに設けるようにしている。ヘッド部１０ａには、ユーザーが把持するためのハンドル２５あるいは取っ手が設けられている。また、ヘッド部１０ａを支柱１０ｃに保持したまま小容量から大容量までのメスフラスコやメスシリンダーに純水を採水する必要もあるので、支柱１０ｃにおけるヘッド１０ａの保持位置を可変とするとともに、支柱１０ｃは十分な長さを有する必要がある。 Next, the water dispenser 10 will be described. FIG. 2 shows the appearance of the water dispenser 10. However, in FIG. 2, the piping 55 and various wiring used for connection with a pure water manufacturing apparatus are not shown. The water dispenser 10 is roughly divided into a head portion 10a, a main body portion 10b, and a support column 10c extending vertically upward from the main body portion 10b and removably holding the head 10a. The main body portion 10 b is connected by a flexible pipe 14. As a usage of the water dispenser 10, for example, it is used to pour pure water one after another to a large number of test tubes arranged in an array on a laboratory table. In order to cope with such applications, a head portion 10a which can be held by a user and moved to a desired position is provided, and a nozzle 16 which actually becomes a pouring spout of pure water is provided in the head portion 10a. There is. The head portion 10a is provided with a handle 25 or a handle for the user to hold. In addition, since it is necessary to collect pure water from a small capacity to a large capacity measuring flask or measuring cylinder while holding the head portion 10a on the support 10c, the holding position of the head 10a in the support 10c can be changed. The post 10c needs to have a sufficient length.
　ヘッド部１０ａは、本体部１０ｂから配管１４を介して送られてきた純水をノズル１６から吐出するものであり、図１に示すように、ノズル１６のほかに、配管１４に接続する流路１５を備えており、ノズル１６は、流路１５の末端に設けられている。さらにヘッド部１０ａは、ユーザーの需要に応じて純水を吐出するために、ユーザーによって操作されるスイッチ１８を備えている。ヘッド１０ａには、図２に示すように、ハンドル２５を握ったユーザーがその指で容易に操作できる位置にボタン２６が設けられている。ボタン２６はスイッチ１８（図１参照）に機械的に接続しており、ボタン２６に対する操作によってスイッチ１８が操作されるようになっている。 The head portion 10 a discharges from the nozzle 16 pure water sent from the main body portion 10 b through the pipe 14, and as shown in FIG. 1, a flow path connected to the pipe 14 in addition to the nozzle 16. The nozzle 16 is provided at the end of the flow path 15. Furthermore, the head unit 10a includes a switch 18 operated by the user in order to discharge pure water according to the user's demand. As shown in FIG. 2, the head 10 a is provided with a button 26 at a position where the user holding the handle 25 can easily operate it with his finger. The button 26 is mechanically connected to the switch 18 (see FIG. 1), and the switch 18 is operated by operating the button 26.
　本体部１０ｂには配管１１が設けられており、配管１１の一端は純水製造装置５０からの配管５５に接続し、他端はヘッド部１０ａへの配管１４に接続している。配管１１には、上流側からすなわち純水製造装置５０に近い側から、流量センサー１２及び流量調節弁１３がこの順で設けられている。さらに本体部１０ｂには、採水ディスペンサー１０の動作を制御する制御部２０と、制御部２０に接続する操作パネル１９とが設けられている。流量調節弁１３は、例えば電磁式のものであって、制御部２０からの信号により弁の開閉を制御できるとともに、その弁を通る純水の流量を変化させることができるものである。流量センサー１２は、例えば、一定の体積（容量）の液体が流れるごとに電気パルスを出力するパルス式のものである。操作パネル１９は、ユーザーからの例えば採水量や採水モードの設定を受け付けるとともに、ユーザーに対して必要な表示を行うものである。採水モードとしては、任意量の採水を可能にする任意量採水モードと、定量採水機能に基づく採水モードであってユーザーが指定した体積の純水をノズル１６から吐出する定量採水モードがあり、さらに、その他の採水モードが設けられていてもよい。 A pipe 11 is provided in the main body 10b, one end of the pipe 11 is connected to a pipe 55 from the pure water producing apparatus 50, and the other end is connected to a pipe 14 to the head 10a. The flow rate sensor 12 and the flow rate control valve 13 are provided in the pipe 11 in this order from the upstream side, that is, from the side closer to the pure water production apparatus 50. Furthermore, the control unit 20 that controls the operation of the water dispenser 10 and the operation panel 19 connected to the control unit 20 are provided in the main body unit 10 b. The flow rate control valve 13 is, for example, an electromagnetic type, and can control the opening and closing of the valve according to a signal from the control unit 20 and can change the flow rate of pure water passing through the valve. The flow rate sensor 12 is, for example, a pulse type that outputs an electric pulse each time a fixed volume (volume) of liquid flows. The operation panel 19 receives, for example, settings of water collection amount and water collection mode from the user, and performs necessary display for the user. The water sampling mode includes an arbitrary water sampling mode enabling water sampling of an arbitrary volume, and a water sampling mode based on a quantitative water sampling function, wherein quantitative water ejection from a nozzle 16 of a volume specified by the user is performed. There may be a water mode, and other water sampling modes may be provided.
　制御部２０は、採水ディスペンサー１０の全体の制御を行うものであり、例えば、ヘッド部１０ａのスイッチ１８を介して入力したユーザーからの採水要求を受け付け、採水モードが定量採水モードである場合には、流量センサー１２で検出された流量の累積値、すなわち体積値が設定値となるまで流量調節弁１３を開けることにより、その設定値で示される量の純水がヘッド部１０ａに送水されるようにする制御を行う。定量採水モードでの採水の詳細については後述する。採水モードが任意量採水モードである場合には、制御部２０は、スイッチ１８が操作されている期間だけ流量調節弁１３を開ける制御を行う。任意量採水モードの場合、ユーザは、操作パネル１９を介してノズルからの純水の流量、すなわち単位時間当たりの吐出量を指定することができ、制御部２０は、指定された流量となるように流量調節弁１３を制御する。これは、洗浄びんへの採水など、速度が重視される場合と、メスフラスコへのその標線までの採水など、採水操作の正確さが重視される場合とがあるためである。さらに制御部２０は、図示破線で示す配線により純水製造装置５０の主制御装置５２に接続しており、主制御装置５２から、純水製造装置５０の運転状態に関する情報、特に、製造された純水の全有機炭素（ＴＯＣ；total organic carbon）値、抵抗率、温度値などの品質データを取得する。制御部２０は、取得した水質データを所定のフォーマットで操作パネル１９上に表示する。 The control unit 20 controls the whole of the water dispenser 10, for example, receives a water collection request from the user input through the switch 18 of the head unit 10a, and the water collection mode is a quantitative water collection mode. In some cases, by opening the flow control valve 13 until the accumulated value of the flow detected by the flow sensor 12, that is, the volume value becomes the set value, the amount of pure water indicated by the set value is transferred to the head 10a. Control to send water. Details of water sampling in the quantitative water sampling mode will be described later. When the water sampling mode is the arbitrary volume water sampling mode, the control unit 20 performs control to open the flow control valve 13 only while the switch 18 is operated. In the case of the arbitrary amount water sampling mode, the user can designate the flow rate of pure water from the nozzle via the operation panel 19, that is, the discharge amount per unit time, and the control unit 20 becomes the designated flow rate. To control the flow control valve 13. This is because there are cases where speed is important, such as water collection to a washing bottle, and accuracy of water collection operation, such as water collection up to the marked line to the measuring flask, is important. Furthermore, the control unit 20 is connected to the main controller 52 of the pure water producing apparatus 50 by a wire shown by a broken line in the figure, and the main controller 52 produces information about the operating condition of the pure water producing apparatus 50, in particular, Acquire quality data such as total organic carbon (TOC) value, resistivity, and temperature value of pure water. The control unit 20 displays the acquired water quality data on the operation panel 19 in a predetermined format.
　採水ディスペンサー１０の本体部１０ｂを構成するこれらの要素のうち、配管１１、流量センサー１２、流量調節弁１３及び制御部２０は、図２に示す筺体２１の内部に設けられる。操作パネル１９は、扁平な形状であって、その一端においてヒンジ２３を介して筺体２１に取り付けられている。操作パネル１９の一方の面には、液晶表示パネルとタッチセンサーとを一体化させたタッチパネル２２が設けられている。タッチパネル２２は、ユーザーに対して表示を行なう表示部として機能するとともに、タッチパネル２２上の所定の位置に対してユーザーが触れることにより、ユーザーからの入力を受け付ける。 Among these elements constituting the main body 10 b of the water dispenser 10, the pipe 11, the flow sensor 12, the flow control valve 13, and the control unit 20 are provided inside the housing 21 shown in FIG. 2. The operation panel 19 has a flat shape, and is attached to the housing 21 via a hinge 23 at one end thereof. A touch panel 22 in which a liquid crystal display panel and a touch sensor are integrated is provided on one surface of the operation panel 19. The touch panel 22 functions as a display unit for displaying to the user, and receives input from the user when the user touches a predetermined position on the touch panel 22.
　次に、本実施形態の採水ディスペンサー１０における定量採水モードの詳細について説明する。定量採水モードでは、ユーザーが所望の採水量を設定値Ｌとして設定したときに、制御部２０は、流量調節弁１３を開弁するとともに流量センサー１２からのパルスを計数して通過した液体の体積を算出し、この通過体積が設定値Ｌに達した時点で流量調節弁１３を閉じる制御を行なう。したがって、ノズル１６から吐出される純水の体積の精度は流量センサー１２の精度に依存することになる。本実施形態の採水ディスペンサー１０では、定量採水モードによる採水を行なう前に、例えば、採水ディスペンサー１０の据付時などに、流量センサー１２からのパルスの計数値に対する補正パラメータを求める。本実施形態では、流量センサー１２からのパルスの計数値によって表わされる体積Ｘとし、実際に流量センサー１２を流れた液体の体積をよりよく表わすような補正後の体積をＱとして、式(1)で示す一次式の関係が成り立つように２つの補正パラメータａ，ｂを求める。 Next, details of the quantitative water collecting mode in the water collecting dispenser 10 of the present embodiment will be described. In the water sampling mode, when the user sets a desired water sampling amount as the set value L, the control unit 20 opens the flow control valve 13 and counts the pulses from the flow sensor 12 and passes through it. The volume is calculated, and when the passing volume reaches the set value L, the flow control valve 13 is closed. Therefore, the accuracy of the volume of pure water discharged from the nozzle 16 depends on the accuracy of the flow rate sensor 12. In the water sampling dispenser 10 of the present embodiment, before water sampling in the quantitative water sampling mode, for example, when the water sampling dispenser 10 is installed, a correction parameter for the pulse count value from the flow rate sensor 12 is determined. In the present embodiment, the volume X represented by the count value of pulses from the flow sensor 12 is taken as the volume X, and the volume after correction that better represents the volume of the liquid actually flowing through the flow sensor 12 is taken as equation (1) Two correction parameters a and b are obtained so that the relationship of the linear expression shown by.
　　Ｑ＝ａ・Ｘ＋ｂ　　　　　　　(1)
　本実施形態では、異なる２つの体積値で純水を吐出するように採水ディスペンサー１０を動作させ、それぞれの場合に実際に吐出された純水の体積を計測し、これらの計測結果に基づいて補正パラメータａ，ｂを求める。 Q = a · X + b (1)
In the present embodiment, the water dispenser 10 is operated to discharge pure water at two different volume values, and in each case, the volume of pure water actually discharged is measured, and based on the measurement results. The correction parameters a and b are obtained.
　図３は、補正パラメータａ，ｂを求める具体的な手順を示している。まず、ステップ１０１において体積Ａ1を設定値Ｌとし、ステップ１０２においてこの設定値Ｌで採水ディスペンサー１０を動作させて純水を吐出させる。ステップ１０３において、吐出させた純水を例えばメスシリンダーに集水してその体積を測定する。実際に測定された体積をＢ1とする。次に、同様に、ステップ１０４において、体積Ａ1とは異なる体積Ａ2を設定値Ｌとし、ステップ１０５において設定値Ｌにより採水ディスペンサー１０を動作させて純水を吐出させ、吐出させた純水の体積Ｂ2をステップ１０６において測定する。以上のように、設定された体積Ａ1，Ａ2にそれぞれ対応する実際に吐出された純水の体積Ｂ1，Ｂ2が測定されたら、ステップ１０７において、式(2), (3)に基づいて、補正パラメータａ，ｂを決定する。 FIG. 3 shows a specific procedure for obtaining the correction parameters a and b. First, the volume A 1 and the set value L in step 101, the pure water is ejected by operating the water sampling dispenser 10 at this setting value L in step 102. In step 103, the discharged pure water is collected, for example, in a measuring cylinder, and its volume is measured. Let B 1 be the volume actually measured. Then, similarly, in step 104, the set value L different volumes A 2 is the volume A 1, by discharging pure water by operating the water sampling dispenser 10 by the set value L in step 105, the net was discharged the volume B 2 of water is measured in step 106. As described above, if it is determined volume B 1, B 2 of the pure water actually discharged respectively corresponding to the volume A 1, A 2, which is set, in step 107, Equation (2), in (3) Based on the correction parameters a and b are determined.
　　ａ＝(Ｂ1－Ｂ2)／(Ａ1－Ａ2)　　(2),
　　ｂ＝Ｂ1－ａ・Ａ1　　　　　　(3)
　操作パネル１９を介してユーザーが補正パラメータ決定のコマンドを入力すると、制御部２０は、図３に示した処理のうちのステップ１０１，１０２，１０４，１０５，１０７の処理を実行するとともに、操作パネル１９上に、ユーザーに対してステップ１０３，１０６の処理を実行することを促すメッセージを表示し、測定された体積Ｂ1，Ｂ2についてのユーザーからの入力を受け付ける。設定される体積Ａ1，Ａ2は、いずれも０でなく、かつ相互に異なっていればよいが、一方の体積は、この採水ディスペンサー１０においてよく使用される採水量かそれよりもやや大きな値とし、他方の体積は、比較的小さい値とすることが好ましい。一例として、Ａ1＞Ａ2と仮定し、かつ、この採水ディスペンサー１０での定量採水モードにおいてよく使用される採水量あるいは常用される最大の採水量をＶとすれば、Ａ1＝Ｖとするか、すなわち常用量をＡ1とするか、あるいはＡ1＝１．１×Ｖ程度に設定することが好ましい。一方、Ａ2は、Ａ2＝０．１×Ｖ程度に設定することが好ましい。ただし、流量センサー１２がパルス式であり、かつ、０．１×Ｖ程度の体積ではパルス式であることによる量子化誤差が無視できないときには、十分なパルス数が得られるように、Ａ2は０．１×Ｖよりも大きな値とすることが好ましい。体積Ａ1，Ａ2の値は、予め制御部２０にプログラムされていてもよいし、ユーザーによって事前に入力されるようになっていてもよい。採水ディスペンサー１０においてよく使用される採水量が１０００ｍＬであれば、Ａ1は例えば１１００ｍＬに設定され、Ａ2は例えば１００ｍＬに設定される。 a = (B 1 -B 2 ) / (A 1 -A 2 ) (2),
b = B 1 -a · A 1 (3)
When the user inputs a command for determining the correction parameter via the operation panel 19, the control unit 20 executes the processing of steps 101, 102, 104, 105, and 107 of the processing shown in FIG. A message prompting the user to execute the processes of steps 103 and 106 is displayed on the screen 19, and the input from the user about the measured volumes B 1 and B 2 is accepted. The set volumes A 1 and A 2 may not both be 0 and be different from each other, but one of the volumes is a water collection volume often used in this water collection dispenser 10 or a little larger than that Preferably, the other volume is a relatively small value. As an example, if it is assumed that A 1 > A 2 , and V is the amount of water often used in the water sampling mode with this water dispenser 10 or the maximum amount of water commonly used, then A 1 = V It is preferable to set the normal dose to A 1 or to set A 1 = 1.1 × V or so. On the other hand, A 2 is preferably set to about A 2 = 0.1 × V. However, when the flow rate sensor 12 is a pulse type and the quantization error due to the pulse type can not be ignored in a volume of about 0.1 × V, A 2 is 0 so that a sufficient number of pulses can be obtained. It is preferable to set a value larger than 1 × V. The values of the volumes A 1 and A 2 may be programmed in the control unit 20 in advance, or may be input in advance by the user. If adopted water is 1000mL often used in water sampling dispenser 10, A 1 is set to, for example, 1100 mL, A 2 is set to, for example, 100 mL.
　次に、ステップ１０２，１０５における採水動作について説明する。ステップ１０２，１０５の処理は、いずれも設定値Ｌで示される体積の純水をノズル１６から吐出させるものであり、定量採水モードでの採水と基本的には同じ処理である。図４は、設定値Ｌで表わされる体積の純水を吐出する処理を示すフローチャートである。既に設定値Ｌが設定されているものとする。 Next, the water sampling operation in steps 102 and 105 will be described. The processes of steps 102 and 105 are both for discharging pure water of a volume indicated by the set value L from the nozzle 16, and are basically the same process as water collection in the quantitative water collection mode. FIG. 4 is a flowchart showing a process of discharging pure water of a volume represented by the set value L. It is assumed that the setting value L has already been set.
　まず、ステップ１１１において、体積測定値Ｐをクリアすなわち０にする。体積測定値Ｐは、流量センサー１２からのパルスを計数することによってすなわち積算することによって得られる体積の値であり、ここでは補正パラメータａ，ｂによる補正を行う前の値である。次に、ステップ１１２において、流量調節弁１３を全開にする。その結果、ノズル１６からの純水の吐出が開始し、流量センサー１２は、流量計測のパルスを発生し続ける。制御部２０は、流量センサー１２からのパルスの計数を継続して行っており、ステップ１１３に示すように、設定値ＬからパラメータΔを減算したものとパルスの計数に基づく体積測定値Ｐとを随時比較する。そしてＰ≧Ｌ－Δになるまで、すなわち、設定値ＬからパラメータΔを減算したものに体積測定値Ｐが達するまで、ステップ１１３を繰り返す。設定値ＬからパラメータΔを減算したものに体積測定値Ｐが達すると、ステップ１１４において、制御部２０は、流量調節弁１３の開度を絞って流量調節弁１３を流れる純水の流量を減少させる。これは、体積測定値Ｐが設定値Ｌになったときにいきなり流量調節弁１３を全開から全閉に制御すると、オーバーシュート現象などにより、正確な量の吐出ができなくなるからである。Ｌ－Δは、流量調節弁１３の開度を絞るタイミングを決定するためのしきい値となる。Δの値は、配管１１や流量センサー１２、流量調節弁１３のサイズや構成に基づいて定められる正の値であるが、例えば、設定値Ｌの数％程度の値としたり、流量センサー１２がパルス式のものであれば数十から数百個のパルスに相当するものとしたりすることができる。一例として、設定値Ｌが１０００ｍＬであるような場合において、Δを７０ｍＬとすることができる。 First, at step 111, the volume measurement value P is cleared, ie, made zero. The volume measurement value P is a value of the volume obtained by counting pulses from the flow rate sensor 12, that is, a value before it is corrected by the correction parameters a and b. Next, at step 112, the flow control valve 13 is fully opened. As a result, discharge of pure water from the nozzle 16 is started, and the flow rate sensor 12 continues to generate a pulse of flow rate measurement. The control unit 20 continues counting the pulses from the flow rate sensor 12 and, as shown in step 113, a value obtained by subtracting the parameter Δ from the set value L and a volume measurement value P based on the counting of the pulses. Compare as needed. Then, step 113 is repeated until P ≧ L−Δ, that is, until the volume measurement value P reaches the set value L minus the parameter Δ. When the volume measurement value P reaches the value obtained by subtracting the parameter Δ from the set value L, in step 114, the control unit 20 reduces the opening degree of the flow control valve 13 to reduce the flow rate of pure water flowing through the flow control valve 13. Let This is because if the flow control valve 13 is suddenly controlled from full opening to full closing when the volumetric measurement value P reaches the set value L, discharge of an accurate amount can not be performed due to an overshoot phenomenon or the like. L-Δ is a threshold for determining the timing at which the opening of the flow control valve 13 is narrowed. The value of Δ is a positive value determined based on the size and configuration of the pipe 11, the flow rate sensor 12, and the flow rate control valve 13. For example, the value of Δ is set to about several percent of the set value L. The pulse type can be equivalent to several tens to several hundreds of pulses. As an example, in the case where the set value L is 1000 mL, Δ can be 70 mL.
　その後、制御部２０は、ステップ１１５において、体積測定値Ｐが設定値Ｌに達したかどうかを判定し、Ｐ≧Ｌとなるまで、すなわち体積測定値Ｐが設定値Ｌに達するまで、ステップ１１５を繰り返す。体積測定値Ｐが設定値Ｌに達したら、制御部２０は、ステップ１１６において、直ちに流量調節弁１３を完全に閉じる。本実施形態では、予め流量調節弁１３の開度が絞られているので、オーバーシュート現象を起こすこともなく、体積測定値Ｐが設定値Ｌに達した時点で完全に純水のノズル１６からの吐出を停止することができる。 Thereafter, in step 115, the control unit 20 determines whether or not the volume measurement value P has reached the set value L, and until step S ≧ L, ie, until the volume measurement value P reaches the set value L, step 115. repeat. When the measured volume value P reaches the set value L, the control unit 20 immediately closes the flow control valve 13 completely in step 116. In the present embodiment, since the opening of the flow control valve 13 is narrowed in advance, no overshoot phenomenon is caused, and when the volume measurement value P reaches the set value L, the nozzle 16 of pure water is completely removed. It is possible to stop the discharge of
　次に、補正パラメータａ，ｂを決定した後の定量採水について説明する。定量採水の処理は、上述と同様に図４に示す手順で行なわれる。ただし、設定値Ｌには採水しようとする体積が設定され、体積測定値Ｐとして用いられる値は、上述の式(1)にしたがって随時計算される補正後の体積Ｑである。本実施形態では、設定される体積値Ａ1，Ａ2の２点のそれぞれについて実際の体積Ｂ1，Ｂ2を測定して補正パラメータａ，ｂを決定し、それに基づいて流量センサー１２の測定値に対する補正を行うので、例えば特許文献１に記載されるようないわゆる１点補正の場合に比べ、流量や体積の精度を高めることができる。さらに、パラメータΔを用いて純水の吐出開始時には流量を最大限に大きくし、吐出を停止するタイミングの直前には流量を絞ることにより、吐出時間を徒に長くすることなく、正確な量での吐出が可能となる。またここでは定量採水時の処理を説明したが、補正パラメータａ，ｂに基づいて補正後の体積Ｑを随時算出することを任意量採水モードにおいて行なってもよく、算出されたＱの値を操作パネル１９に表示するようにすれば、ユーザーの利便性がさらに高まる。 Next, quantitative water sampling after determining the correction parameters a and b will be described. The treatment of quantitative water collection is performed in the procedure shown in FIG. 4 as described above. However, the volume to be sampled is set as the set value L, and the value used as the volume measurement value P is the corrected volume Q calculated as needed according to the above-mentioned equation (1). In the present embodiment, by measuring the actual volume B 1, B 2 for each of the two points of the volume values A 1, A 2 which is set to determine the correction parameters a, b, measurement of the flow rate sensor 12 on the basis thereof Since the correction to the value is performed, it is possible to improve the accuracy of the flow rate and the volume as compared with the case of so-called one-point correction as described in Patent Document 1, for example. Furthermore, by using the parameter Δ, the flow rate is maximized at the start of discharge of pure water, and the flow rate is narrowed immediately before stopping the discharge, so that the discharge time can not be increased unnecessarily and with an accurate amount. Can be discharged. In addition, although the process at the time of quantitative water sampling has been described here, the volume Q after correction may optionally be calculated based on the correction parameters a and b in the arbitrary water sampling mode, and the calculated value of Q Is displayed on the operation panel 19 to further enhance the convenience of the user.
　本実施形態では、純水製造装置５０に対して３個の採水ディスペンサー１０が接続している。流量センサー１０の誤差は採水ディスペンサー１０ごとに異なるので、補正パラメータａ，ｂは採水ディスペンサー１０ごとに決定し、決定された補正パラメータａ，ｂは採水ディスペンサー１０ごとにその制御部２０に格納される。しかしながら、補正パラメータａ，ｂを決定する作業を工数を減らすために、補正パラメータ決定のコマンドをいずれか１つの採水ディスペンサー１０において入力することで、各採水ディスペンサー１０がいずれも補正パラメータの決定のためのモードに遷移するようにしてもよい。この場合は、コマンドが入力された採水ディスペンサー１０から純水製造装置５０の主制御装置５２を介して他の採水ディスペンサー１０にコマンドが転送されることになる。 In the present embodiment, three water dispensers 10 are connected to the pure water production apparatus 50. Since the error of the flow rate sensor 10 is different for each water dispenser 10, the correction parameters a and b are determined for each water dispenser 10, and the determined correction parameters a and b are for each water dispenser 10 to its control unit 20 Stored. However, in order to reduce the number of man-hours in the work of determining the correction parameters a and b, each water sampling dispenser 10 determines the correction parameter by inputting the command of the correction parameter determination in any one of the water collection dispensers 10 It may transition to the mode for In this case, the command is transferred from the water dispenser 10 to which the command is input to the other water dispenser 10 via the main control device 52 of the pure water producing apparatus 50.
　１０　　　採水ディスペンサー
　１０ａ　　ヘッド部
　１０ｂ　　本体部
　１２　　　流量センサー
　１３　　　流量調節弁
　１６　　　ノズル
　１８　　　スイッチ
　１９　　　操作パネル
　２０　　　制御部
　５０　　　純水製造装置
  DESCRIPTION OF SYMBOLS 10 Water dispenser 10a Head part 10b Main body part 12 Flow sensor 13 Flow control valve 16 Nozzle 18 Switch 19 Operation panel 20 Control part 50 Pure water production apparatus

Claims (7)

  1. 　純水の採水に用いられる採水ディスペンサーであって、
    　純水製造装置から純水が供給され、前記純水を吐出するノズルに連通する配管と、
    　前記配管に設けられた流量調節弁と、
    　前記配管において前記流量調節弁に対して直列に設けられた流量センサーと、
    　前記流量調節弁を制御する制御部と、
    　を有し、
    　前記制御部は、前記流量センサーの検出結果から得られる体積が第１の体積となるまで前記流量調節弁を開く第１の制御と、前記流量センサーの検出結果から得られる体積が前記第１の体積とは異なる第２の体積となるまで前記流量調節弁を開く第２の制御と、前記第１の制御によって実際に採水された量である第１の量と前記第２の制御によって実際に採水された量である第２の量とが入力されると、前記第１の体積、前記第２の体積、前記第１の量及び前記第２の量に基づいて前記流量センサーの検出結果と補正後の体積との関係を表わす一次式を特定する２つのパラメータを算出する処理と、前記２つのパラメータによって前記流量センサーの検出結果を補正しながら、補正後の検出結果に基づき前記流量調節弁を流れる体積が指定された体積となるまで前記流量調節弁を開弁する定量採水モードの制御と、を実行する採水ディスペンサー。     A water dispenser that is used to collect pure water,
    A pipe which is supplied with pure water from a pure water production apparatus and is communicated with a nozzle for discharging the pure water;
    A flow control valve provided in the pipe;
    A flow sensor provided in series with the flow control valve in the pipe;
    A control unit that controls the flow rate control valve;
    Have
    The control unit performs first control to open the flow control valve until the volume obtained from the detection result of the flow sensor becomes a first volume, and the volume obtained from the detection result of the flow sensor is the first control. The second control which opens the flow control valve to a second volume different from the volume, the first amount which is the amount actually collected by the first control, and the second control actually Detection of the flow rate sensor based on the first volume, the second volume, the first amount, and the second amount. A process of calculating two parameters specifying a linear expression representing the relationship between the result and the volume after correction, and the flow rate based on the detection result after correction while correcting the detection result of the flow sensor by the two parameters The volume flowing through the control valve is specified Water sampling dispenser for executing a control of the quantitative water sampling mode for opening the flow control valve until the volume.
  2. 　前記制御部は、前記流量調節弁を閉状態から開状態に制御するときは前記流量調節弁を流れる流量を第１の流量に制御し、前記流量センサーの検出結果から得られる体積が所定の値になったときに前記流量調節弁を閉じる制御を行なうときは、前記体積が前記所定の値より小さいしきい値に達したときに前記流量調節弁を流れる流量を前記第１の流量よりも小さな流量に絞り、前記体積が前記所定の値に達したときに前記流量調節弁を完全に閉める制御を行なう、請求項１に記載の採水ディスペンサー。 When the flow control valve is controlled from the closed state to the open state, the control unit controls the flow rate flowing through the flow rate control valve to a first flow rate, and the volume obtained from the detection result of the flow rate sensor is a predetermined value When control is performed to close the flow rate control valve when the flow rate becomes smaller, the flow rate through the flow rate control valve is smaller than the first flow rate when the volume reaches a threshold smaller than the predetermined value. The water dispensing dispenser according to claim 1, wherein the flow rate is controlled, and the flow rate control valve is completely closed when the volume reaches the predetermined value.
  3. 　前記採水ディスペンサーで常用される採水量に基づいて前記第１の量が設定される、請求項１または２に記載の採水ディスペンサー。 The water collection dispenser according to claim 1, wherein the first amount is set based on a water collection amount commonly used in the water collection dispenser.
  4. 　純水製造装置から純水が供給され、前記純水を吐出するノズルに連通する配管と、前記配管に設けられた流量調節弁と、前記配管において前記流量調節弁に対して直列に設けられた流量センサーとを備え、定量採水機能を有する採水ディスペンサーの補正方法であって、
    　前記流量センサーの検出結果から得られる体積が第１の体積となるまで前記流量調節弁を開く第１の処理と、
    　前記流量センサーの検出結果から得られる体積が前記第１の体積とは異なる第２の体積となるまで前記流量調節弁を開く第２の処理と、
    　前記第１の体積と、前記第２の体積と、前記第１の処理によって実際に採水された量である第１の量と、前記第２の処理によって実際に採水された量である第２の量とに基づいて、前記流量センサーの検出結果と補正後の体積との関係を表わす一次式を特定する２つのパラメータを算出する処理と、
    　を有する補正方法。     Pure water is supplied from a pure water production apparatus, and a pipe communicating with a nozzle for discharging the pure water, a flow control valve provided in the pipe, and a pipe provided in series with the flow control valve in the pipe A correction method of a water dispenser having a flow rate sensor and having a water sampling function,
    A first process of opening the flow control valve until the volume obtained from the detection result of the flow sensor reaches a first volume;
    A second process of opening the flow control valve until the volume obtained from the detection result of the flow sensor becomes a second volume different from the first volume;
    The first volume, the second volume, the first amount which is the amount actually collected by the first treatment, and the amount actually collected by the second treatment A process of calculating two parameters specifying a linear expression representing the relationship between the detection result of the flow rate sensor and the volume after correction based on the second amount;
    Correction method.
  5. 　前記２つのパラメータによって前記流量センサーの検出結果を補正しながら、補正後の検出結果に基づき前記流量調節弁を流れる体積が指定された体積となるまで前記流量調節弁を開弁する処理をさらに有する、請求項４に記載の補正方法。 The flow control valve is further opened until the volume flowing through the flow control valve reaches a designated volume based on the corrected detection result while correcting the detection result of the flow sensor by the two parameters. The correction method according to claim 4.
  6. 　前記流量調節弁を閉状態から開状態に制御するときは前記流量調節弁を流れる流量を第１の流量とし、
    　前記流量センサーの検出結果から得られる体積が所定の値になったときに前記流量調節弁を閉じるときは、前記体積が前記所定の値より小さいしきい値に達したときに前記流量調節弁を流れる流量を前記第１の流量よりも小さな流量に絞り、前記体積が前記所定の値に達したときに前記流量調節弁を完全に閉める、請求項４または５に記載の補正方法。     When controlling the flow rate control valve from the closed state to the open state, the flow rate flowing through the flow rate control valve is taken as a first flow rate,
    When the flow rate control valve is closed when the volume obtained from the detection result of the flow rate sensor reaches a predetermined value, the flow rate control valve is closed when the volume reaches a threshold smaller than the predetermined value. The correction method according to claim 4 or 5, wherein the flow rate is reduced to a flow rate smaller than the first flow rate, and the flow rate control valve is completely closed when the volume reaches the predetermined value.
  7. 　前記採水ディスペンサーで常用される採水量に基づいて前記第１の量が設定される、請求項４乃至６のいずれか１項に記載の補正方法。
          The correction method according to any one of claims 4 to 6, wherein the first amount is set based on a water collection amount commonly used by the water collection dispenser.
PCT/JP2018/016629 2017-07-26 2018-04-24 Water-collection dispenser and correction method therefor WO2019021556A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201880047964.8A CN110914650B (en) 2017-07-26 2018-04-24 Water dispenser and calibration method thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017144488A JP6491279B2 (en) 2017-07-26 2017-07-26 Water sampling dispenser and correction method thereof
JP2017-144488 2017-07-26

Publications (1)

Publication Number Publication Date
WO2019021556A1 true WO2019021556A1 (en) 2019-01-31

Family

ID=65040469

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/016629 WO2019021556A1 (en) 2017-07-26 2018-04-24 Water-collection dispenser and correction method therefor

Country Status (4)

Country Link
JP (1) JP6491279B2 (en)
CN (1) CN110914650B (en)
TW (1) TWI742281B (en)
WO (1) WO2019021556A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021033508A1 (en) * 2019-08-20 2021-02-25 オルガノ株式会社 Water consumption management system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58223021A (en) * 1982-06-21 1983-12-24 Oval Eng Co Ltd Circuit for adjusting instrumental error
JPH0719917A (en) * 1993-03-04 1995-01-20 Matsushita Electric Ind Co Ltd Flowmeter
WO1999047854A1 (en) * 1998-03-13 1999-09-23 Amsco Europe Inc. Suomen Sivuliike Method and device for measuring the reject water flow in a steam generator
JP2002059161A (en) * 2000-08-11 2002-02-26 Purwater Hanbai Kk Pure water feed method and device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4025978B2 (en) * 2002-03-08 2007-12-26 株式会社ササクラ Ozone water supply device
EP2250471A4 (en) * 2008-02-27 2013-07-31 Daniel Measurement & Control Flow meter proving method and system
US7905139B2 (en) * 2008-08-25 2011-03-15 Brooks Instrument, Llc Mass flow controller with improved dynamic
TWI621571B (en) * 2013-07-11 2018-04-21 恩特葛瑞斯股份有限公司 Apparatus and methods for filling and dispensing liquids
CN103487119A (en) * 2013-09-29 2014-01-01 杭州竞达电子有限公司 Full-automatic error correction checking device for electronic water meter and method thereof
DE102015224619A1 (en) * 2015-12-08 2017-06-08 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. micro-dosing system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58223021A (en) * 1982-06-21 1983-12-24 Oval Eng Co Ltd Circuit for adjusting instrumental error
JPH0719917A (en) * 1993-03-04 1995-01-20 Matsushita Electric Ind Co Ltd Flowmeter
WO1999047854A1 (en) * 1998-03-13 1999-09-23 Amsco Europe Inc. Suomen Sivuliike Method and device for measuring the reject water flow in a steam generator
JP2002059161A (en) * 2000-08-11 2002-02-26 Purwater Hanbai Kk Pure water feed method and device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021033508A1 (en) * 2019-08-20 2021-02-25 オルガノ株式会社 Water consumption management system
JP2021030119A (en) * 2019-08-20 2021-03-01 オルガノ株式会社 System of controlling amount of used water
CN114175116A (en) * 2019-08-20 2022-03-11 奥加诺株式会社 Water usage management system
CN114175116B (en) * 2019-08-20 2023-09-19 奥加诺株式会社 Water consumption management system

Also Published As

Publication number Publication date
JP6491279B2 (en) 2019-03-27
CN110914650B (en) 2020-09-11
TWI742281B (en) 2021-10-11
CN110914650A (en) 2020-03-24
JP2019027822A (en) 2019-02-21
TW201923314A (en) 2019-06-16

Similar Documents

Publication Publication Date Title
US6328881B1 (en) Water purification system and method including dispensed volume sensing and control
JP2003501637A (en) Wide range gas flow system with real-time flow measurement and correction
JP5688026B2 (en) Dual mode mass flow verification and mass flow delivery system and method
CN110170426B (en) Precise dispensing controller and dispensing control method thereof
WO2012064809A1 (en) Real time measurements of fluid volume and flow rate using two pressure transducers
JP2003535397A (en) Apparatus and method for controlling liquid level
KR20140129225A (en) Gas separation and supply device for semiconductor manufacturing apparatus
JP2012058213A (en) Air micrometer
WO2019021556A1 (en) Water-collection dispenser and correction method therefor
EP3630360A1 (en) Method and apparatus for dispensing precise aliquots of liquid
CN103837215B (en) Commutation valve type p.V.T.t method gas flow meter
TW201734348A (en) Pressure sensitive touch electronic faucet
US20140110429A1 (en) Apparatus for Dispensing Fuel
US8257595B2 (en) Control apparatus for a liquid dispense system
KR20120038142A (en) Water purifier having control function of water supplying
EP1919830B1 (en) Control apparatus for a liquid dispense system
JP4905813B2 (en) Physicochemical monitoring unit
CN104374444B (en) Sample without mass flowmenter sample introduction indirect metering method and device
JP7369644B2 (en) Liquid dispenser and its flow rate adjustment method
JP4270256B2 (en) Lubrication device
JP2010137874A (en) Beverage dispenser
WO2022120553A1 (en) High-voltage constant-current pump for liquid chromatograph
JP4362360B2 (en) Beer filling equipment
WO2018221085A1 (en) Water sampling dispenser
JP2001219995A (en) Filling device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18838063

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18838063

Country of ref document: EP

Kind code of ref document: A1