JPH036693A - Liquid level measuring instrument - Google Patents
Liquid level measuring instrumentInfo
- Publication number
- JPH036693A JPH036693A JP14160289A JP14160289A JPH036693A JP H036693 A JPH036693 A JP H036693A JP 14160289 A JP14160289 A JP 14160289A JP 14160289 A JP14160289 A JP 14160289A JP H036693 A JPH036693 A JP H036693A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- gas
- pipe
- container
- piping
- 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.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 196
- 230000000903 blocking effect Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract 6
- 239000002994 raw material Substances 0.000 description 111
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 24
- 238000001514 detection method Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 13
- 229910002092 carbon dioxide Inorganic materials 0.000 description 12
- 239000001569 carbon dioxide Substances 0.000 description 12
- 235000013361 beverage Nutrition 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Beverage Vending Machines With Cups, And Gas Or Electricity Vending Machines (AREA)
Abstract
Description
この発明は、主として飲料用自動販売機の容器内に収容
される液体原料に係る液体レベル計測装置に関する。The present invention mainly relates to a liquid level measuring device for liquid raw materials contained in a container of a beverage vending machine.
第６図は従来例が適用された原料供給系の系統図である
。第６図から明らかなように、この従来例では、炭酸ガ
スボンベ１から供給される炭酸ガスはレギュレータ２で
あらかじめ設定された圧力まで減圧され、ガス分配管３
からガス配管４ａ＋４ｂを通って原料容器５へ注入され
る。原料容器５内で炭酸ガスによって加圧された液体原
料６は、原料配管７ａ、７ｂ内を圧送され、売切れ検知
装置８に入る。この売切れ検知装置８は気液分離の機能
を持ち、通常販売時には、飲料カップ１６に供給される
原料に気泡が混じるのを防いでいる。また、原料容器５
内の原料が無くなったときには、売切れ検知機能を発揮
する。すなわち、売切れ検知装置８内には炭酸ガスが流
入し、そのため上方にガスが溜るから、これを一対の売
切れ検知用電極９で検知することによって、約−杯分の
原料を残した状態、つまり売切れ直前状態を知ることが
できる。
売切れ検知装置８で気液分離された原料は流量制御弁１
０を通る。流量制御弁１０は、炭酸ガスの加圧力のばら
つきによって原料の吐出流量が変化しないことを保証し
ている。ここから押し出された原料は、水槽１２内の冷
却水１３に浸された冷却コイル１１を通り、その下流側
の一端に取りつけられた吐出制御用の電磁弁１４を通過
して吐出ノズル１５から飲料カップ１６に供給される。
電磁弁１４はマイクロコンピュータによって制御されて
いて、通常の販売時にはあらかじめ設定された吐出時間
になるように開閉される。
また、ガス配管４（４ａ、４ｂ）と原料配管７（７ａ。
７ｂ）との間に表示管１７、各分岐管１８ａ、１８ｂ
、バルブ機構１９を設けである。なお、バルブ機構１９
は表示管１７から原料配管７ａ、７ｂへ向う流れだけを
阻止する逆止め弁である。各分岐管１８ａ、 １８ｂは
、内部でそれぞれ３方向に連通していて、分岐管１８ａ
は炭酸ガスを、分岐管１８ｂは原料液体をそれぞれ分岐
させて表示管１７に導いている。表示管１７は透明なほ
ぼ垂直に設置される管体であり、これによって各ガス配
管４ａ、４ｂと各原料配管７ａ、７ｂとが接続されてい
る。
このような構成をとることによって、各原料配管７ａ、
７ｂ以降が原料６で満たされ、吐出制御用の電磁弁１４
が閉じている静的な状態では、表示管１７内の炭酸ガス
、原料液体相互の圧力バランスを原料容器５の内部と同
じ状態に保つことができ、原料容器５内の液面高さＨｏ
と表示管１７内の液面高さＨを等しくすることができる
。
なお、バルブ機構１９は、通常の販売をしない静的な状
態では開いていて、表示管１７と、各原料配管７ａ、７
ｂおよび各ガス配管４ａ、４ｂとはそれぞれ連通してい
る。しかし、販売時などの原料配管側の圧力が低下する
場合に、バルブ機構１９が表示管１７内の原料液体やガ
スが各原料配管７ａ、７ｂ内に流出するのを防ぐ。
例えば、バルブ機構１９が無い状態で販売すると、電磁
弁１４が開くことによって、冷却コイル１１、売切れ検
知装置８、各原料配管７ａ、７ｂ内部の圧力が低下し、
表示管１７内の原料は原料配管側に送り出されて液面高
さの関係はＨ＜Ｈｏとなる。その際、表示管１７内の初
期の液面高さが低い場合には、液面が表示管１７を下が
りきって炭酸ガスまでが各原料配管７ａ、’？ｂ内に流
れ込む場合が生じる。この炭酸ガスが売切れ検知装置８
まで送られてしまうと、売切れ検知装置８の誤作動の原
因となるため、原料側の圧力が低下する時にはバルブ機
構１９を閉じて表示管１７からのガス流出を防ぐ構成と
している。また、原料容器５の交換時にも同様の現象が
発生する場合があり、バルブ機構１９によってこれを防
いでいる。
なお、先程のバルブ機構１９にはもう一つ別の機能、つ
まり各原料配管７ａ、７ｂ内に原料が無いときに、この
配管内に原料をスムーズに充填するのを補助する機能が
ある。すなわち、各原料配管７ａ、７ｂ内に原料が無け
れば、分配管３から原料容器５に向かう側の抵抗が大き
いために、炭酸ガスはガス配管４ａから表示管１７を通
って各原料配管７ａ、７ｂへ流出し、原料容器５から原
料が押し出されなくなる。したがって、表示管１７内を
一定量以上の炭酸ガスが流れる場合には、バルブ機構１
９が閉じることによって表示管側１７からの炭酸ガス流
出を防ぎ、各原料配管７ａ、７ｂへの原料充填を容易に
している。
以上の説明においては、バルブ機構１９は各分岐管１８
ａ、１８ｂと表示管１７との間にそれぞれ設けられてい
るが、各分岐管１８ａ、１８ｂ間であればどこでも良い
ことは勿論である。FIG. 6 is a system diagram of a raw material supply system to which a conventional example is applied. As is clear from FIG. 6, in this conventional example, the carbon dioxide gas supplied from the carbon dioxide gas cylinder 1 is reduced to a preset pressure by the regulator 2, and the gas distribution pipe 3
The raw material is injected into the raw material container 5 through the gas pipes 4a+4b. The liquid raw material 6 pressurized with carbon dioxide gas in the raw material container 5 is fed under pressure through the raw material pipes 7a and 7b, and enters the sold-out detection device 8. This sold-out detection device 8 has a gas-liquid separation function, and prevents air bubbles from being mixed into the raw material supplied to the beverage cup 16 during normal sales. In addition, the raw material container 5
When the raw materials in the container run out, it will perform an out-of-stock detection function. That is, carbon dioxide gas flows into the sold-out detection device 8 and gas accumulates above, so by detecting this with the pair of sold-out detection electrodes 9, it is possible to detect a state in which about -1 cup of raw material remains, that is. You can know when the item is about to sell out. The raw material separated into gas and liquid by the sold-out detection device 8 is passed through the flow control valve 1
Pass through 0. The flow rate control valve 10 ensures that the discharge flow rate of the raw material does not change due to variations in the pressurizing force of carbon dioxide gas. The raw material pushed out from here passes through the cooling coil 11 immersed in the cooling water 13 in the water tank 12, passes through the solenoid valve 14 for discharge control attached to one end on the downstream side, and is discharged from the discharge nozzle 15 into the beverage. It is supplied to cup 16. The solenoid valve 14 is controlled by a microcomputer and is opened and closed at a preset discharge time during normal sales. In addition, an indicator pipe 17 and each branch pipe 18a, 18b are installed between the gas pipe 4 (4a, 4b) and the raw material pipe 7 (7a, 7b).
, a valve mechanism 19 is provided. In addition, the valve mechanism 19
is a check valve that blocks only the flow from the display pipe 17 toward the raw material pipes 7a and 7b. Each branch pipe 18a, 18b communicates in three directions inside, and the branch pipe 18a and 18b communicate with each other in three directions.
The branch pipe 18b branches the carbon dioxide gas, and the branch pipe 18b branches the raw material liquid to the display pipe 17. The display tube 17 is a transparent tube installed substantially vertically, through which each gas pipe 4a, 4b and each raw material pipe 7a, 7b are connected. By adopting such a configuration, each raw material pipe 7a,
The area after 7b is filled with the raw material 6, and the solenoid valve 14 for discharge control
In the static state where is closed, the pressure balance between the carbon dioxide gas in the display tube 17 and the raw material liquid can be maintained in the same state as inside the raw material container 5, and the liquid level height in the raw material container 5 Ho
and the liquid level height H in the display tube 17 can be made equal. Note that the valve mechanism 19 is open in a static state where normal sales are not performed, and the display tube 17 and each raw material pipe 7a, 7
b and each gas pipe 4a, 4b are in communication with each other. However, when the pressure on the raw material piping side decreases during sales, etc., the valve mechanism 19 prevents the raw material liquid or gas in the display tube 17 from flowing out into each raw material piping 7a, 7b. For example, if sold without the valve mechanism 19, the solenoid valve 14 opens and the pressure inside the cooling coil 11, sold-out detection device 8, and each raw material pipe 7a, 7b decreases.
The raw material in the display tube 17 is sent out to the raw material pipe side, and the relationship between the liquid level heights becomes H<Ho. At this time, if the initial liquid level height in the display tube 17 is low, the liquid level has fallen down the display tube 17 until the carbon dioxide gas reaches each raw material pipe 7a,'? There may be cases where the water flows into b. This carbon dioxide gas is sold out detection device 8
If the raw material is fed to the limit, it may cause malfunction of the sold-out detection device 8. Therefore, when the pressure on the raw material side decreases, the valve mechanism 19 is closed to prevent gas from flowing out from the display tube 17. Further, a similar phenomenon may occur when the raw material container 5 is replaced, and this is prevented by the valve mechanism 19. Note that the aforementioned valve mechanism 19 has another function, that is, a function of assisting in smoothly filling raw materials into each of the raw material pipes 7a and 7b when there is no raw material in these pipes. That is, if there is no raw material in each of the raw material pipes 7a and 7b, the resistance from the distribution pipe 3 to the raw material container 5 is large, so that carbon dioxide gas passes from the gas pipe 4a through the display tube 17 to each of the raw material pipes 7a and 7b. 7b, and the raw material is no longer pushed out from the raw material container 5. Therefore, when a certain amount or more of carbon dioxide gas flows through the display tube 17, the valve mechanism 1
9 prevents carbon dioxide gas from flowing out from the display tube side 17 and facilitates filling of raw materials into each raw material pipe 7a, 7b. In the above description, the valve mechanism 19 is defined as each branch pipe 18.
Although they are provided between each of the branch pipes 18a and 18b and the display tube 17, it goes without saying that they may be provided anywhere between the branch pipes 18a and 18b.
以上説明したように、従来の技術では、表示管１７を含
み各原料配管１ａ、’Ｈ＋の合計３本の配管がほぼ直立
して設置される。このため、配管処理が複雑になり、単
に配管工数が増すだけでなく配管ミスや保守のし難さの
原因になる。
この発明の課題は、従来の技術がもつ以上の問題点を解
消し、各配管がコンパクトに処理される液体ルベル計測
装置を提供することにある。As explained above, in the conventional technology, a total of three pipes including the display tube 17 and each raw material pipe 1a and 'H+ are installed substantially upright. For this reason, piping processing becomes complicated, which not only increases the number of piping steps but also causes piping errors and difficulty in maintenance. An object of the present invention is to provide a liquid ruber measuring device that solves the above-mentioned problems of the conventional technology and allows each pipe to be handled compactly.
この課題を解決するために、第１の発明に係る液体レベ
ル計測装置は、
配管部を除いて密封状の液体容器と；
この液体容器の内部に収容される液体を圧力気体によっ
て加圧するために前記液体容器内の液体と接する空間に
気体配管を介して連通ずる加圧手段と；
前記液体容器内の液体を所定箇所まで導出する途中に設
けられ、この液体容器内の液体レベルの下位限界に応じ
て位置する低位箇所と、前記導出側で前記液体容器内の
液体レベルの上位限界に応じて位置する封鎖された高位
端部とを有し、かつこの高位端部と前記低位箇所との間
では内部の気液境界が目視可能な透明度を有する気液配
管と；この気液配管内にその高位端部を貫通して前記低
位箇所に達するように設けられ、両端部がそれぞれ開口
する液体配管と；
前記気体配管の任意箇所と前記気液配管の高位端部近傍
箇所との接続路に設けられ、正、逆各方向の所定流速以
上の流れを阻止可能なバルブ機構と；を備え、
前記気液配管内の気液境界レベルによって前記液体容器
内の液体レベルを計測する。
第２の発明に係る液体レベル計測装置は、配管部を除い
て密封状の液体容器と＝
この液体容器の内部に収容される液体を圧力気体によっ
て加圧するために前記液体容器内の液体と接する空間に
気体配管を介して連通ずる加圧手段と；
両側の封鎖された高位、低位の各端部が前記液体容器内
の液体レベルの上位、下位の各限界に応じて位置し、内
部の気液境界が目視可能な透明度を有する気液配管と；
この気液配管内にその上端部を貫通して設けられ、一方
の端部が前記液体の導出側に開口し、他方の端部が前記
気液配管の低位端部近傍に開口する第１の液体配管と；
前記液体容器内の液体を導出するため、前記気液配管の
高位端部近傍箇所からその内部に導入され低位端部近傍
に開口する第２の液体配管と；前記気体配管の任意箇所
と前記気液配管の前記高位端部近傍箇所との接続路に設
けられ、正、逆各方向の所定流速以上の流れを阻止可能
なバルブ機構と；を備え、
前記気液配管内の気液境界レベルによって前記液体容器
内の液体レベルを計測する。
第３の発明に係る液体レベル計測装置は、第１．第２の
各発明において、気液配管の低位端部が液体容器内の液
体レベルの下位限界より所定レベルだけ低く位置し、か
つこの下位限界に対応する箇所に液体レベル用検知器が
設けられる。
第４の発明に係る液体レベル計測装置は、配管部を除い
て密封状の液体容器と：
この液体容器の内部に収容される液体を圧力気体によっ
て加圧するために前記液体容器内の液体と接する空間に
気体配管を介して連通ずる加圧手段と；
一方の端部が前記液体容器内の液体と接する空間に正、
逆各方向の所定流速以上の流れを阻止可能なバルブ機構
を介して連通し、他方の端部が導出側に開口するととも
に前記液体容器内の液体レベルの上位、下位の各限界に
応じて位置する高位。
低位の各箇所を有し、前記液体容器に接続される側の前
記高位、低位の各箇所間ではその内部の気液境界が目視
可能な透明度を有する気液配管と；この気液配管内に挿
入されるとともに一方の端部が前記液体容器内の液体に
連通し、他方の端部が前記気液配管の低位箇所近傍に開
口する液体配管と；を備え、
前記気液配管内の気液境界レベルによって前記液体容器
内の液体レベルを計測する。In order to solve this problem, a liquid level measuring device according to a first invention includes a liquid container that is sealed except for a piping part; a pressurizing means communicating with a space in contact with the liquid in the liquid container via a gas pipe; provided on the way to lead out the liquid in the liquid container to a predetermined point; a lower point located according to the upper limit of the liquid level in the liquid container on the outlet side and a closed higher end located according to the upper limit of the liquid level in the liquid container, and between this upper end and the lower point A gas-liquid pipe with transparency that allows the internal gas-liquid boundary to be seen; a liquid pipe that is installed in this gas-liquid pipe so as to penetrate through its high end to reach the low point, and is open at both ends. and; a valve mechanism that is provided in a connecting path between an arbitrary location of the gas piping and a location near the high end of the gas-liquid piping, and is capable of blocking flow at a predetermined flow rate or higher in each of the forward and reverse directions; The liquid level in the liquid container is measured by the gas-liquid boundary level in the gas-liquid pipe. A liquid level measuring device according to a second aspect of the present invention includes a liquid container that is sealed except for a piping portion; a pressurizing means communicating with the space via a gas pipe; sealed upper and lower ends on both sides are located according to the upper and lower limits of the liquid level in the liquid container, and A gas-liquid pipe having a transparency that allows the liquid boundary to be visually seen; the gas-liquid pipe is provided inside the gas-liquid pipe by penetrating its upper end, one end is open to the liquid outlet side, and the other end is open to the liquid outlet side; a first liquid pipe that opens near the lower end of the gas-liquid pipe; and a first liquid pipe that is introduced into the gas-liquid pipe from a location near the high end of the gas-liquid pipe and near the lower end in order to draw out the liquid in the liquid container; a second liquid pipe to be opened; provided in a connecting path between any part of the gas pipe and a part near the high end of the gas-liquid pipe, and capable of blocking flow at a predetermined flow rate or higher in each of the forward and reverse directions; and a valve mechanism; the liquid level in the liquid container is measured based on the gas-liquid boundary level in the gas-liquid pipe. The liquid level measuring device according to the third invention is the first. In each of the second inventions, the lower end of the gas-liquid pipe is located a predetermined level lower than the lower limit of the liquid level in the liquid container, and the liquid level detector is provided at a location corresponding to this lower limit. A liquid level measuring device according to a fourth aspect of the present invention includes a liquid container that is sealed except for a piping portion; a pressurizing means communicating with the space via a gas pipe;
The valves are connected via a valve mechanism that can prevent a flow exceeding a predetermined flow rate in each direction, and the other end is open to the outlet side and positioned according to the upper and lower limits of the liquid level in the liquid container. A high-ranking person. a gas-liquid pipe having low points, and having transparency that allows the internal gas-liquid boundary to be visible between the high and low points on the side connected to the liquid container; a liquid pipe that is inserted and has one end communicating with the liquid in the liquid container and the other end opening near a lower part of the gas-liquid pipe; A boundary level measures the liquid level in the liquid container.
第１発明に係る液体レベル計測装置では、液体容器から
出てほぼ直立する配管は、液体配管と気液配管との２本
であり、しかも気液配管内部には液体容器内と同じレベ
ルの気液境界が目視可能に形成され、かつ気液配管内の
液体の気体配管側への流れおよび逆方向の流れがバルブ
機構によって阻止される。
第２発明に係る液体レベル計測装置では、容器から出て
ほぼ直立する配管は、気液配管の１本だけであり、しか
も気液配管の内部には液体容器内と同じレベルの気液境
界が目視可能に形成され、かつ気液配管内の液体の気体
配管側への流れおよび逆方向の流れがバルブ機構によっ
て阻止される。
第３発明に係る液体レベル計測装置では、第１゜第２の
各発明の作用の外に、気液配管の低位端部が液体容器内
の下位限界より所定レベルだけ低く位置しているから、
液体容器が空になったとき、このことが検知器によって
検知され、かつ気液配管の所定レベルに対応する液体が
その後にさらに導出可能な一種の予備液になる。
第４発明に係る液体レベル計測装置では、液体容器から
出てほぼ直立する配管は、低位、高位め一′各箇所をつ
なぐＵ字状気液配管の各脚部に相当する２本であり、し
かも気体配管と、液体容器と、気液配管とが直列に簡明
な形で接続される。液体容器に接続される側の気液配管
の低位、高位の各箇所間の内部には液体容器内と同じレ
ベルの気液境界が目視可能に形成される。In the liquid level measuring device according to the first aspect of the invention, there are two pipes that come out of the liquid container and are almost vertical, a liquid pipe and a gas-liquid pipe, and the inside of the gas-liquid pipe has the same level of air as the inside of the liquid container. A liquid boundary is formed so as to be visible, and a valve mechanism prevents the liquid in the gas-liquid pipe from flowing toward the gas pipe and from flowing in the opposite direction. In the liquid level measuring device according to the second aspect of the invention, there is only one pipe that comes out of the container and stands almost vertically, which is the gas-liquid pipe, and there is a gas-liquid boundary inside the gas-liquid pipe at the same level as inside the liquid container. The valve mechanism is formed to be visible and prevents the liquid in the gas-liquid pipe from flowing toward the gas pipe and from flowing in the opposite direction. In the liquid level measuring device according to the third invention, in addition to the effects of the first and second inventions, since the lower end of the gas-liquid pipe is located a predetermined level lower than the lower limit in the liquid container,
When the liquid container is empty, this is detected by a detector, and the liquid corresponding to a predetermined level in the gas-liquid line becomes a kind of reserve liquid that can then be drawn out further. In the liquid level measuring device according to the fourth aspect of the invention, there are two pipes that come out of the liquid container and stand approximately vertically, corresponding to each leg of a U-shaped gas-liquid pipe that connects the lower and higher positions, Moreover, the gas pipe, the liquid container, and the gas-liquid pipe are connected in series in a simple manner. A gas-liquid boundary at the same level as the inside of the liquid container is visually visible between the lower and higher parts of the gas-liquid pipe connected to the liquid container.
第１の発明に係る液体レベル計測装置の実施例（以下、
第１実施例という）について、これが適用された飲料用
自動販売機の原料供給系の系統図である第１図を参照し
ながら説明する。
第１図における各部材は、とくに断らない限り第６図の
従来例におけるものと同じであり、かつ同じ符号を付け
である。第１図において、表示管２１は原料容器５内の
原料６が取り得る上位、下位の各限界に応じて位置する
脚部をもつＵ字状配管で、右脚部と底部とは比較的細い
管、左脚部は内部が目視可能な透明度をもつ比較的太い
管で上端部が封鎖されている。この表示管２１の左脚部
の管内には、原料配管２２が挿入される。この原料配管
２２の上端部は売切れ検知装置８側に開口し、下端部は
表示管２１の底部近傍に開口している。また、表示管２
１の左脚部の上端部近傍箇所と分岐管１８との間にバル
ブ機構２０が設けられている。このバルブ機構２０は、
正、逆各方向の所定流速以上の流れを阻止できる
したがって、はぼ直立する配管は表示管２１の両胛部に
相当する２本であり、しかも表示管２１の左脚部内には
、原料容器５内におけるのと同じレベルの、原料とガス
との境界が目視可能に形成される。かつ表示管２１の左
脚部内の原料のガス配管側への流れおよび逆方向の流れ
がバルブ機構２０によって阻止される。この第１実施例
は、いわば第６図において表示管１７の内部に原料配管
４ａが内蔵された形である。
第２図は、第２の発明に係る液体レベル計測装置の実施
例（以下、第２実施例という）が適用された飲料用自動
販売機の原料供給系の系統図である。第２図において、
表示管３１は両端部が封鎖された比較的太い管で、第１
実施例における表示管２１の左脚部に相当する。各原料
配管３２．３３は、いずれも表示管３１に内蔵され、そ
れぞれ第１実施例における原料配管２２と、表示管２１
の右脚部とに相当し、かつ第２発明における第１．第２
の各液体配管である。表示管３１と各原料配管３２．３
３の隣接部材は第１実施例におけるのと同じであるから
、説明を省略する。
第２実施例では、原料容器５から出てほぼ直立する配管
は、表示管３１の１本だけであり、しかもその内部には
原料容器５内と同じレベルの原料とガスとの境界が目視
可能に形成され、かつ表示管３１内の原料のガス配管側
への流れおよび逆方向の流れがバルブ機構２０によって
阻止される。
第３図は、第３の発明に係る液体レベル計測装置の一実
施例（以下、第３実施例という）が適用された飲料用自
動販売機の原料供給系の系統図である。この第３実施例
は第１実施例に対応し、かつこの第１実施例と異なる点
は、■表示管４１の下端部と原料配管４２の下端部と原
料配管４３の開口部との位置が原料容器５の原料レベル
の下位限界よりＬだけ低位にあること、■表示管４１に
は原料容器５の原料レベルの下位限界に対応する箇所に
原料境界検知用の検知器９（従来例における売切れ検知
装置８に含まれると同じ機器）が設けられること、■こ
れに関連して表示管４１の上端部に隣接して流量制御弁
１０が設けられること、等である。
なお、原料配管４２は第１実施例における原料配管２２
に相当する。
第３実施例では、第１実施例の作用の外に、表示管４１
の低位端部が原料容器５内の下位限界より所定レベルＬ
だけ低く位置しているから、原料容器５内の原料６が空
になったとき、このことが検知器９によって検知され、
かつ表示管４１の所定レベルＬに対応する量の原料がそ
の後にさらに導出可能な一種の予備原料になる。また、
表示管４１内のガスを抜く必要がないから、従来必要と
したガス逃がし弁が不要になる。
第４図は、第３の発明に係る液体レベル計測装置の別の
実施例（以下、第４実施例という）が適用された飲料用
自動販売機の原料供給系の系統図である。この第４実施
例は第２実施例に対応し、これと異なる点は、■表示管
５１の下端部と、原料配管５２．原料配管５３の各開口
部との位置が原料容器５の原料レベノｐの下位限界より
したけ低位にあること、■表示管５１には原料容器５の
原料レベルの下位限界に対応する箇所に原料境界検知用
の検知器９が設けられること、■これに関連して表示管
５１の上端部に隣接して流量制御弁１０が設けられるこ
と、等である。なお、原料配管５２は第２実施例におけ
る原料配管３２に相当する。
第４実施例では、第２実施例の作用の外に、表示管５１
の低位端部が原料容器５内の下位限界より所定レベルし
たけ低く位置しているから、原料容器５内の原料６が空
になったとき、このことが検知器９によって検知され、
かつ表示管５１の所定レベルＬに対応する量の原料がそ
の後にさらに導出可能な一種の予備原料になる。また、
表示管４１内のガスを抜く必要がないから、従来必要と
したガス逃がし弁が不要になる。
第５図は、第４の発明に係る液体レベル計測装置の実施
例（以下、第５実施例という）が適用された飲料用自動
販売機の原料供給系の系統図である。第５図において、
Ｕ字状の表示管６１が原料容器５と売切れ検知装置８と
の間に設置される。表示管６１は、その右脚部の端部が
原料容器５のガス空間に接続継手６０を介して連通し、
また左脚部の端部が売切れ検知装置８側に開口する。な
お、接続継手６０には正、逆各方向の所定流速以上の流
れが阻止可能なバルブ機構が内蔵されている。さらに、
表示管６１の右脚部には、原料配管６２が内蔵される。
この原料配管６２はその右端部が原料容器５内の原料６
に連通し、左端部が表示管６１の底部近傍に開口する。
ガス分配管３からのガス配管は、原料容器５までの接続
管としての１本のガス配管４だけである。表示管６１の
右脚部は、内部を目視可能なように透明度をもち、この
部分に原料とガスとの境界が形成される。
第５実施例では、原料容器５から出てほぼ直立する配管
は、Ｕ字状表示管６１の各脚部に相当する２本であり、
しかもガス配管４と、原料容器５と、表示管６１とが直
列に簡明な形で接続される。そして、原料容器５に接続
される側の表示管６１の右脚部の内部には原料容器５内
と同じレベルの原料。
ガスの境界が目視可能に形成される。Embodiments of the liquid level measuring device according to the first invention (hereinafter referred to as
Embodiment 1) will be described with reference to FIG. 1, which is a system diagram of a raw material supply system of a beverage vending machine to which this embodiment is applied. Unless otherwise specified, each member in FIG. 1 is the same as that in the conventional example shown in FIG. 6, and is given the same reference numeral. In FIG. 1, the display tube 21 is a U-shaped pipe with legs positioned according to the upper and lower limits of the raw material 6 in the raw material container 5, and the right leg and bottom are relatively thin. The tube, the left leg, is a relatively thick tube that is transparent enough to allow the inside to be seen, and the upper end is sealed. A raw material pipe 22 is inserted into the left leg of the display tube 21 . The upper end of this raw material pipe 22 opens toward the sold-out detection device 8 side, and the lower end opens near the bottom of the display tube 21. In addition, display tube 2
A valve mechanism 20 is provided between a location near the upper end of the left leg of the valve 1 and the branch pipe 18. This valve mechanism 20 is
Flow exceeding a predetermined flow rate in the forward and reverse directions can be prevented.Therefore, there are two pipes that stand upright, corresponding to both limbs of the display tube 21, and in the left leg of the display tube 21, there is a raw material container. A visually visible boundary between the raw material and the gas is formed at the same level as in 5. In addition, the valve mechanism 20 prevents the raw material in the left leg of the display tube 21 from flowing toward the gas piping side and from flowing in the opposite direction. In this first embodiment, as shown in FIG. 6, the raw material pipe 4a is built inside the display tube 17. FIG. 2 is a system diagram of a raw material supply system of a beverage vending machine to which an embodiment of the liquid level measuring device according to the second invention (hereinafter referred to as the second embodiment) is applied. In Figure 2,
The display tube 31 is a relatively thick tube with both ends sealed.
This corresponds to the left leg of the display tube 21 in the embodiment. Each of the raw material pipes 32 and 33 is built into the display tube 31, and the raw material pipe 22 and the display pipe 21 in the first embodiment, respectively.
and corresponds to the right leg of the first invention in the second invention. Second
These are each liquid piping. Display tube 31 and each raw material pipe 32.3
Since the adjacent members No. 3 are the same as those in the first embodiment, their explanations will be omitted. In the second embodiment, there is only one pipe, the display tube 31, which comes out of the raw material container 5 and stands almost vertically, and inside it, the boundary between the raw material and the gas at the same level as inside the raw material container 5 is visible. The valve mechanism 20 prevents the raw material in the display tube 31 from flowing toward the gas piping side and from flowing in the opposite direction. FIG. 3 is a system diagram of a raw material supply system of a beverage vending machine to which an embodiment of the liquid level measuring device according to the third invention (hereinafter referred to as the third embodiment) is applied. This third embodiment corresponds to the first embodiment, and differs from the first embodiment in that: (1) the positions of the lower end of the display tube 41, the lower end of the raw material pipe 42, and the opening of the raw material pipe 43; The indicator tube 41 has a detector 9 for detecting the raw material boundary (in the conventional example, the sensor 9 is located at a position corresponding to the lower limit of the raw material level of the raw material container 5). (1) In connection with this, a flow rate control valve 10 is provided adjacent to the upper end of the display tube 41. Note that the raw material pipe 42 is the same as the raw material pipe 22 in the first embodiment.
corresponds to In the third embodiment, in addition to the functions of the first embodiment, the display tube 41
The lower end of is at a predetermined level L than the lower limit in the raw material container 5.
When the raw material 6 in the raw material container 5 becomes empty, this is detected by the detector 9.
And the amount of raw material corresponding to the predetermined level L of the display tube 41 becomes a kind of preliminary raw material that can be further drawn out thereafter. Also,
Since there is no need to vent the gas in the display tube 41, the gas relief valve that was conventionally required is no longer necessary. FIG. 4 is a system diagram of a raw material supply system of a beverage vending machine to which another embodiment (hereinafter referred to as the fourth embodiment) of the liquid level measuring device according to the third invention is applied. This fourth embodiment corresponds to the second embodiment, and is different from the second embodiment in that: (1) the lower end of the display tube 51 and the raw material pipe 52. The position of each opening of the raw material pipe 53 is at a level lower than the lower limit of the raw material level p of the raw material container 5; A detector 9 for boundary detection is provided, and a flow control valve 10 is provided adjacent to the upper end of the display tube 51 in connection with this. Note that the raw material pipe 52 corresponds to the raw material pipe 32 in the second embodiment. In the fourth embodiment, in addition to the functions of the second embodiment, the display tube 51
Since the lower end of is located a predetermined level lower than the lower limit in the raw material container 5, when the raw material 6 in the raw material container 5 becomes empty, this is detected by the detector 9,
And the amount of raw material corresponding to the predetermined level L of the display tube 51 becomes a kind of preliminary raw material that can be further drawn out thereafter. Also,
Since there is no need to vent the gas in the display tube 41, the gas relief valve that was conventionally required is no longer necessary. FIG. 5 is a system diagram of a raw material supply system of a beverage vending machine to which an embodiment of the liquid level measuring device according to the fourth invention (hereinafter referred to as the fifth embodiment) is applied. In Figure 5,
A U-shaped display tube 61 is installed between the raw material container 5 and the sold-out detection device 8. The end of the right leg of the display tube 61 communicates with the gas space of the raw material container 5 via the connection joint 60,
Further, the end of the left leg opens toward the sold-out detection device 8 side. Note that the connecting joint 60 has a built-in valve mechanism that can prevent a flow exceeding a predetermined flow rate in each of the forward and reverse directions. moreover,
A raw material pipe 62 is built into the right leg of the display tube 61 . The right end of this raw material pipe 62 is connected to the raw material 6 in the raw material container 5.
The left end portion opens near the bottom of the display tube 61 . The gas pipe from the gas distribution pipe 3 is only one gas pipe 4 as a connection pipe to the raw material container 5. The right leg of the display tube 61 has transparency so that the inside can be viewed visually, and a boundary between the raw material and the gas is formed in this part. In the fifth embodiment, there are two pipes that come out of the raw material container 5 and stand almost vertically, corresponding to each leg of the U-shaped display tube 61.
Moreover, the gas pipe 4, the raw material container 5, and the display tube 61 are connected in series in a simple manner. The inside of the right leg of the display tube 61 on the side connected to the raw material container 5 contains the raw material at the same level as the inside of the raw material container 5. A visible gas boundary is formed.
【発明の効果】
したがって、この発明によれば、従来の技術に比べ次の
ようなすぐれた効果がある。
（１） 第１発明によれば、液体容器から出てほぼ直
立する配管は、液体配管と気液配管との２本であるから
、配管がコンパクトに処理でき、配管工数の短縮、配管
ミスのおそれ解消、保守の容易さ等が図れる。
（２）第２発明によれば、容器から出てほぼ直立する配
管は気液配管の１本だけであるから、配管がさらにコン
パクトに処理でき、加えてさらに配管工数の短縮、配管
ミスのおそれ解消、保守の容易さ等が図れる。
（３）第３発明によれば、第１．第２の各発明による効
果に加えて共通に、気液配管内の気体を抜く必要がない
から、従来必要であった気体逃がし弁が不要になる、と
いう効果がある。
（４）第４発明によれば、液体容器から出てほぼ直立す
る配管は、低位、高位の各箇所をつなぐＵ字状気液配管
の各脚部に相当する２本であり、しかも気体配管と、液
体容器と、気液配管とが直列に簡明な形で接続されるか
ら、配管がコンパクトに処理でき、配管工数の短縮、配
管ミスのおそれ解消、保守の容易さ等が図れる。゛[Effects of the Invention] Therefore, the present invention has the following superior effects compared to the conventional technology. (1) According to the first invention, since there are two pipes that come out of the liquid container and are almost vertical, the liquid pipe and the gas-liquid pipe, the pipes can be handled compactly, reducing the number of piping steps and preventing piping mistakes. This eliminates the risk and facilitates maintenance. (2) According to the second invention, since only one pipe, the gas-liquid pipe, comes out of the container and stands almost vertically, the pipe can be handled more compactly, and in addition, the number of piping steps can be further reduced, and there is no risk of piping errors. Ease of resolution and maintenance can be achieved. (3) According to the third invention, the first invention. In addition to the effects of each of the second inventions, there is a common effect that since there is no need to vent the gas in the gas-liquid piping, there is no need for a gas relief valve that was conventionally necessary. (4) According to the fourth invention, the pipes that come out of the liquid container and stand almost vertically are two corresponding to each leg of the U-shaped gas-liquid pipe that connects the lower and higher parts, and the gas pipes Since the liquid container and the gas-liquid piping are connected in series in a simple manner, the piping can be handled compactly, reducing piping man-hours, eliminating the risk of piping errors, and facilitating maintenance.゛
第１図は第１発明に係る実施例が適用された原料供給系
の系統図、
第２図は第２発明に係る実施例が適用された原料供給系
の系統図、
第３図は第３発明に係る一実施例が適用された原料供給
系の系統図、
第４図は第３発明に係る別の実施例が適用された原料供
給系の系統図、
第５図は第４発明に係る実施例が適用された原料供給系
の系統図、
第６図は従来例が適用された原料供給系の系統図である
。
符号説明
４．４ａ、４ｂ：ガス配管、５：原料容器、６：原料、
８：売切れ検知装置、９：検知器、１０：流量制御弁、
２０：バルブ機構、２１．３１，４Ｌ５１，６１ ：表
示管、丙
６
司FIG. 1 is a system diagram of a raw material supply system to which an embodiment of the first invention is applied, FIG. 2 is a system diagram of a raw material supply system to which an embodiment of the second invention is applied, and FIG. A system diagram of a raw material supply system to which one embodiment of the invention is applied; FIG. 4 is a system diagram of a raw material supply system to which another embodiment of the third invention is applied; FIG. 5 is a diagram of a raw material supply system to which another embodiment of the third invention is applied. FIG. 6 is a system diagram of a raw material supply system to which the embodiment is applied. FIG. 6 is a system diagram of a raw material supply system to which the conventional example is applied. Code explanation 4.4a, 4b: gas piping, 5: raw material container, 6: raw material,
8: Sold out detection device, 9: Detector, 10: Flow rate control valve,
20: Valve mechanism, 21.31, 4L51, 61: Display tube, Hei6 Tsukasa
Claims (1)
の内部に収容される液体を圧力気体によって加圧するた
めに前記液体容器内の液体と接する空間に気体配管を介
して連通する加圧手段と；前記液体容器内の液体を所定
箇所まで導出する途中に設けられ、この液体容器内の液
体レベルの下位限界に応じて位置する低位箇所と、前記
導出側で前記液体容器内の液体レベルの上位限界に応じ
て位置する封鎖された高位端部とを有し、かつこの高位
端部と前記低位箇所との間では内部の気液境界が目視可
能な透明度を有する気液配管と；この気液配管内にその
高位端部を貫通して前記低位箇所に達するように設けら
れ、両端部がそれぞれ開口する液体配管と；前記気体配
管の任意箇所と前記気液配管の高位端部近傍箇所との接
続路に設けられ、正、逆各方向の所定流速以上の流れを
阻止可能なバルブ機構と；を備え、前記気液配管内の気
液境界レベルによって前記液体容器内の液体レベルを計
測するようにしたことを特徴とする液体レベル計測装置
。 ２）配管部を除いて密封状の液体容器と；この液体容器
の内部に収容される液体を圧力気体によって加圧するた
めに前記液体容器内の液体と接する空間に気体配管を介
して連通する加圧手段と；両側の封鎖された高位、低位
の各端部が前記液体容器内の液体レベルの上位、下位の
各限界に応じて位置し、内部の気液境界が目視可能な透
明度を有する気液配管と；この気液配管内にその上端部
を貫通して設けられ、一方の端部が前記液体の導出側に
開口し、他方の端部が前記気液配管の低位端部近傍に開
口する第１の液体配管と；前記液体容器内の液体を導出
するため、前記気液配管の高位端部近傍箇所からその内
部に導入され低位端部近傍に開口する第２の液体配管と
；前記気体配管の任意箇所と前記気液配管の前記高位端
部近傍箇所との接続路に設けられ、正、逆各方向の所定
流速以上の流れを阻止可能なバルブ機構と；を備え、前
記気液配管内の気液境界レベルによって前記液体容器内
の液体レベルを計測するようにしたことを特徴とする液
体レベル計測装置。 ３）特許請求の範囲第１項または第２項記載の装置にお
いて、気液配管は、その低位端部が液体容器内の液体レ
ベルの下位限界より所定レベルだけ低く位置し、かつこ
の下位限界に対応する箇所に液体レベル用検知器を備え
ることを特徴とする液体レベル計測装置。 ４）配管部を除いて密封状の液体容器と；この液体容器
の内部に収容される液体を圧力気体によって加圧するた
めに前記液体容器内の液体と接する空間に気体配管を介
して連通する加圧手段と；一方の端部が前記液体容器内
の液体と接する空間に正、逆各方向の所定流速以上の流
れを阻止可能なバルブ機構を介して連通し、他方の端部
が導出側に開口するとともに前記液体容器内の液体レベ
ルの上位、下位の各限界に応じて位置する高位、低位の
各箇所を有し、前記液体容器に接続される側の前記高位
、低位の各箇所間ではその内部の気液境界が目視可能な
透明度を有する気液配管と；この気液配管内に挿入され
るとともに一方の端部が前記液体容器内の液体に連通し
、他方の端部が前記気液配管の低位箇所近傍に開口する
液体配管と；を備え、前記気液配管内の気液境界レベル
によって前記液体容器内の液体レベルを計測するように
したことを特徴とする液体レベル計測装置。[Claims] 1) A liquid container that is sealed except for the piping; gas piping in a space in contact with the liquid in the liquid container in order to pressurize the liquid contained inside the liquid container with pressurized gas; a pressurizing means communicating through; a low point provided on the way to lead out the liquid in the liquid container to a predetermined point and located according to the lower limit of the liquid level in the liquid container; a sealed upper end located according to the upper limit of the liquid level in the liquid container, and between the upper end and the lower point there is a transparency that allows the internal gas-liquid boundary to be visualized. a gas-liquid pipe that is provided in the gas-liquid pipe so as to penetrate through its high end to reach the low-position point, and whose both ends are open; an arbitrary part of the gas pipe and the gas-liquid pipe; a valve mechanism that is provided in a connection path to a location near a high end of the piping and is capable of blocking a flow exceeding a predetermined flow rate in each of the forward and reverse directions; A liquid level measuring device characterized in that it measures a liquid level in a container. 2) A liquid container that is sealed except for the piping; a pressurizer that communicates with the space in contact with the liquid in the liquid container via a gas piping in order to pressurize the liquid contained in the liquid container with pressurized gas; pressure means; the sealed upper and lower ends on both sides are located according to the upper and lower limits of the liquid level in the liquid container, and the internal gas-liquid boundary is transparent enough to be visible; Liquid piping; installed inside the gas-liquid piping through its upper end, one end opening to the liquid outlet side, and the other end opening near the lower end of the gas-liquid piping. a first liquid pipe that is introduced into the gas-liquid pipe from a location near the high end of the gas-liquid pipe and opens near the low end in order to draw out the liquid in the liquid container; a valve mechanism provided in a connecting path between an arbitrary point of the gas piping and a portion near the high end of the gas-liquid piping, and capable of blocking flow at a predetermined flow rate or higher in each of the forward and reverse directions; A liquid level measuring device characterized in that the liquid level in the liquid container is measured by a gas-liquid boundary level in a pipe. 3) In the device according to claim 1 or 2, the lower end of the gas-liquid pipe is located a predetermined level lower than the lower limit of the liquid level in the liquid container, and A liquid level measuring device characterized by being equipped with a liquid level detector at a corresponding location. 4) A liquid container that is sealed except for the piping; a pressurizer that communicates with the space in contact with the liquid in the liquid container via a gas piping in order to pressurize the liquid contained in the liquid container with pressurized gas; Pressure means; one end communicates with the space in contact with the liquid in the liquid container via a valve mechanism capable of blocking a flow exceeding a predetermined flow rate in both forward and reverse directions, and the other end communicates with the outlet side. It has high and low points that are opened and located according to the upper and lower limits of the liquid level in the liquid container, and between the high and low points on the side connected to the liquid container. A gas-liquid pipe whose internal gas-liquid boundary is transparent enough to be visually visible; the gas-liquid pipe is inserted into the gas-liquid pipe, and one end communicates with the liquid in the liquid container, and the other end communicates with the liquid in the liquid container. A liquid level measuring device comprising: a liquid pipe opening near a low point of the liquid pipe; and measuring a liquid level in the liquid container based on a gas-liquid boundary level in the gas-liquid pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14160289A JPH036693A (en) | 1989-06-02 | 1989-06-02 | Liquid level measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14160289A JPH036693A (en) | 1989-06-02 | 1989-06-02 | Liquid level measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH036693A true JPH036693A (en) | 1991-01-14 |
Family
ID=15295830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14160289A Pending JPH036693A (en) | 1989-06-02 | 1989-06-02 | Liquid level measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH036693A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007166259A (en) * | 2005-12-14 | 2007-06-28 | Fuji Xerox Co Ltd | Image processing apparatus and display control program |
| JP4831250B1 (en) * | 2010-11-16 | 2011-12-07 | 隆 佐々木 | Liquid discharge device with level gauge |
-
1989
- 1989-06-02 JP JP14160289A patent/JPH036693A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007166259A (en) * | 2005-12-14 | 2007-06-28 | Fuji Xerox Co Ltd | Image processing apparatus and display control program |
| JP4831250B1 (en) * | 2010-11-16 | 2011-12-07 | 隆 佐々木 | Liquid discharge device with level gauge |
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