JPH0546485B2 - - Google Patents
Info
- Publication number
- JPH0546485B2 JPH0546485B2 JP59076011A JP7601184A JPH0546485B2 JP H0546485 B2 JPH0546485 B2 JP H0546485B2 JP 59076011 A JP59076011 A JP 59076011A JP 7601184 A JP7601184 A JP 7601184A JP H0546485 B2 JPH0546485 B2 JP H0546485B2
- Authority
- JP
- Japan
- Prior art keywords
- bathtub
- water level
- water
- pipe
- heat exchanger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 47
- 238000001514 detection method Methods 0.000 claims description 9
- 239000012777 electrically insulating material Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は水位検知装置付風呂釜に関する。[Detailed description of the invention] Industrial applications The present invention relates to a bathtub with a water level detection device.
従来例の構成とその問題点
従来の水位検知装置はフロートによる機械的な
接触式のものが一般的であるが、風呂の水位検知
に使用する場合、湯あかによつて動作不良を起こ
す恐れがある等、信頼性が十分ではなかつた。Conventional configuration and problems Conventional water level detection devices are generally mechanical contact type using floats, but when used to detect the water level in a bath, there is a risk of malfunction due to hot water scale. etc., reliability was not sufficient.
発明の目的
本発明は上記欠点を無くした装置すなわち、水
位に対応した静電容量変化を検出することによる
非接触式の水位検知装置を備えた風呂釜を提供す
ることを目的としている。OBJECTS OF THE INVENTION An object of the present invention is to provide a device that eliminates the above-mentioned drawbacks, that is, a bathtub equipped with a non-contact water level detection device by detecting a change in capacitance corresponding to the water level.
発明の構成
本発明は、風呂釜本体内に設けられた熱交換器
と浴槽とを通水管を介して接続し、上側の通水管
には上方に延びる電気絶縁材で作られた連通管を
分路させて設けるとともに、前記連通管の外壁面
上には対向する一対の電極部を設けた構成であ
り、風呂の水位によつて比例的にかわる前記一対
の電極間の静電容量を発振器によつてパルス列に
変換し、これを計測することによつて、風呂の水
位を連続的に検出するとともに、その検出水位に
もとづいて、バーナの燃焼をコントロールするも
のである。Structure of the Invention The present invention connects a heat exchanger provided in a bathtub body to a bathtub via a water pipe, and connects a communication pipe made of an electrically insulating material extending upward to the upper water pipe as a shunt. In addition, a pair of opposing electrodes are provided on the outer wall surface of the communication pipe, and the capacitance between the pair of electrodes, which changes proportionally depending on the water level in the bath, is measured by an oscillator. By converting it into a pulse train and measuring it, the water level in the bath is continuously detected, and the combustion of the burner is controlled based on the detected water level.
実施例の説明
第１図は本発明の一実施例を示す概略構成図で
あり、通常、浴槽２内の水は下側の通水管４ｂを
通つて風呂釜本体１内に設けられた熱交換器３へ
送られ、そこでバーナ６によつて熱せられた後、
上側の通水管４ａを通つて再び浴槽２内に戻るよ
うになつている。DESCRIPTION OF THE EMBODIMENTS FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention. Normally, water in the bathtub 2 passes through a water pipe 4b on the lower side to a heat exchanger provided in the bathtub body 1. After being sent to vessel 3 and heated there by burner 6,
The water flows back into the bathtub 2 through the upper water pipe 4a.
上側の通水管４ａには、上方に延びるように分
路された連通管５が風呂釜本体１内に設けられて
おり、連通管５はバーナ６が発生する熱の影響を
受けいように熱的に遮断され（図示せず）かつポ
リプロピレンやアクリル樹脂材などの電気絶縁材
で作り、浴槽の水と電気的な絶縁を図つている。
又、その円筒形の外壁面には第２図で示されるよ
うに、対向する２つの電極部９ａ，９ｂを設けた
構成とする。この電極部９ａ，９ｂの作り方とし
ては、薄い金属板を円筒形の外壁面に接着する手
段や、導電性の塗料を円筒形の外壁面に塗布する
手段等がある。 The upper water pipe 4a is provided with a communication pipe 5 that is shunted upward and is provided in the bathtub body 1, and the communication pipe 5 is heated so as not to be affected by the heat generated by the burner 6. (not shown) and is made of an electrically insulating material such as polypropylene or acrylic resin to provide electrical insulation from the water in the bathtub.
Further, as shown in FIG. 2, two opposing electrode portions 9a and 9b are provided on the cylindrical outer wall surface. The electrode parts 9a and 9b can be made by bonding a thin metal plate to the cylindrical outer wall surface, or by applying conductive paint to the cylindrical outer wall surface.
このような水位検知装置の構成において、２つ
の電極部間の静電容量値が、連通管５内の空気と
水の構成比によつて変わることを利用して水位を
求めることができる。すなわち、２つの電極部９
ａ，９ｂ間の静電容量を時定数素子とする発振器
７からの出力パルスの周波数をｆ、電極部９ａ，
９ｂの最下端から計測した連通管の水位をｈとす
ると第３図のような関係が得られる。 In the configuration of such a water level detection device, the water level can be determined by utilizing the fact that the capacitance value between the two electrode parts changes depending on the composition ratio of air and water in the communication pipe 5. That is, two electrode parts 9
The frequency of the output pulse from the oscillator 7, which uses the capacitance between a and 9b as a time constant element, is f, the electrode portions 9a,
If the water level of the communicating pipe measured from the lowest end of the pipe 9b is h, a relationship as shown in FIG. 3 is obtained.
今、計測した周波数がf1であつたとすると、そ
の時の連通管の水位はh1である。従つて、浴槽２
の底から電極部９ａ，９ｂの最下端までの高さを
h0として設計しておけば、求める浴槽２の水位Ｈ
は、次式によつて得られる。 Now, if the measured frequency is f1 , the water level in the communication pipe at that time is h1 . Therefore, bathtub 2
The height from the bottom of the electrode part 9a, 9b to the lowest end of
If you design with h 0 , the desired water level of bathtub 2 H
is obtained by the following equation.
Ｈ＝h0＋h1
又、上側の連通管４ａの高さより下に浴槽２の
水位があるときは、バーナ６を燃焼させることが
できないので、これより下の水位を検出する必要
はないと言える。従つて、電極部９ａ，９ｂの最
下端の位置８が上側の通水管４ａの高さになるよ
うに構成することによつて、短い連通管５と電極
部９ａ，９ｂで、必要な水位情報を連続して得る
ことができる。 H=h 0 + h 1 Also, when the water level in the bathtub 2 is below the height of the upper communication pipe 4a, the burner 6 cannot be burned, so it can be said that there is no need to detect the water level below this. . Therefore, by configuring the lowermost positions 8 of the electrode parts 9a and 9b to be at the height of the upper water pipe 4a, necessary water level information can be obtained using the short communication pipe 5 and the electrode parts 9a and 9b. can be obtained continuously.
尚、前述の説明では、水位の検出において発振
器７の出力パルスの周波数を計測する例を示した
が、本発明はこれに限定されるものではなく、出
力パルス幅を計測する手段なども含むものであ
る。 In the above description, an example was shown in which the frequency of the output pulse of the oscillator 7 is measured in water level detection, but the present invention is not limited to this, and also includes means for measuring the output pulse width. .
発明の効果
このように本発明によれば、通水管より分路さ
せた電気絶縁材から成る連通管と、この連通管の
外壁面上に対向して設けられた一対の電極部と、
発振器を設けただけの簡単な構成の水位検知装置
によつて浴槽内の水位を連続的に検出することが
できるとともに、浴槽内の水位が、最低レベル以
下であることを検出することによつて、風呂釜が
空焚きにならないようにバーナの燃焼をコントロ
ールできる効果を有する。Effects of the Invention As described above, according to the present invention, a communication pipe made of an electrically insulating material is shunted from a water pipe, and a pair of electrode portions are provided facing each other on the outer wall surface of the communication pipe.
The water level in the bathtub can be continuously detected by a water level detection device with a simple configuration that only includes an oscillator, and by detecting that the water level in the bathtub is below the minimum level. , it has the effect of controlling the combustion of the burner so that the bath kettle does not run dry.
更に、本発明によれば、水位検知機構が水と非
接触式のもので構成されるので湯あか等に対する
信頼性に秀れているという効果を有する。 Further, according to the present invention, since the water level detection mechanism is constructed of a non-contact type, it has the effect of being excellent in reliability against hot water scale and the like.
また浴槽水位に比例した電気信号が得られるの
で、その信号をたとえば台所などのような離れた
場所のリモコンに伝送し、表示せしめることによ
つて、風呂場に行かなくても居ながらにして、浴
槽の注水状況を知ることができる。そして、その
得られた電気信号が、使用者が予め設定しておい
た設定水位レベルに達したとき、注水動作を制御
するようにすれば、自動的に注水を停止するとい
う自動風呂釜を容易に実現できる。 In addition, since an electrical signal proportional to the water level in the bathtub can be obtained, that signal can be transmitted to a remote control in a remote location such as the kitchen, and displayed on the screen. You can check the water filling status of the bathtub. Then, if the water injection operation is controlled when the obtained electrical signal reaches a preset water level set by the user, it is easy to create an automatic bath kettle that automatically stops water injection. can be realized.
第１図は本発明の一実施例を示す水位検知装置
付風呂釜の概略断面図、第２図ａ，ｂは同一部詳
細断側面図および断平面図、第３図は同水位と発
振周波数の関係図である。
１……風呂釜本体、２……浴槽、３……熱交換
器、４ａ，４ｂ……通水管、５……連通管、７…
…発振器、９ａ，９ｂ……電極部。
Fig. 1 is a schematic sectional view of a bathtub with a water level detection device according to an embodiment of the present invention, Fig. 2 a and b are a detailed sectional side view and a sectional plan view of the same part, and Fig. 3 is the same water level and oscillation frequency. It is a relationship diagram. 1... Bath pot body, 2... Bathtub, 3... Heat exchanger, 4a, 4b... Water pipe, 5... Communication pipe, 7...
...Oscillator, 9a, 9b... Electrode section.
Claims (1)
熱交換器を燃焼加熱するバーナと、前記熱交換器
と浴槽とを接続する通水管と、前記通水管から上
方に分路させて設けられかつ上部が大気開放の電
気絶縁材から成る連通管と、前記連通管の外壁上
に上下に長く設けられた対向する一対の電極部と
前記一対の電極部に接続された発振器を有し、浴
槽水位に比例した電気信号を出力する水位検知装
置とを備えた水位検知装置付風呂釜。1. A heat exchanger provided in the bathtub body, a burner for burning and heating the heat exchanger, a water pipe connecting the heat exchanger and the bathtub, and a water pipe provided upwardly from the water pipe. The bathtub has a communication pipe made of an electrically insulating material whose upper part is open to the atmosphere, a pair of opposing electrode parts provided vertically long on the outer wall of the communication pipe, and an oscillator connected to the pair of electrode parts. A bathtub equipped with a water level detection device that outputs an electric signal proportional to the water level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59076011A JPS60219517A (en) | 1984-04-16 | 1984-04-16 | Bath boiler with water level detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59076011A JPS60219517A (en) | 1984-04-16 | 1984-04-16 | Bath boiler with water level detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60219517A JPS60219517A (en) | 1985-11-02 |
| JPH0546485B2 true JPH0546485B2 (en) | 1993-07-14 |
Family
ID=13592872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59076011A Granted JPS60219517A (en) | 1984-04-16 | 1984-04-16 | Bath boiler with water level detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60219517A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014145971A2 (en) * | 2013-03-15 | 2014-09-18 | C.R. Bard, Inc. | Urine monitoring systems and methods |
| JP2017194435A (en) * | 2016-04-22 | 2017-10-26 | 株式会社ノーリツ | Liquid level detection device |
| EP4252816A3 (en) | 2018-05-22 | 2024-01-17 | C. R. Bard, Inc. | Catheterization system and methods for use thereof |
| EP3833257A4 (en) | 2018-08-10 | 2022-05-04 | C. R. Bard, Inc. | Automated urine-output-measurement systems and methods thereof |
| JP2020079735A (en) * | 2018-11-12 | 2020-05-28 | 常生 山内 | Measurement device for feature quantity and measurement method for the same |
| US11703365B2 (en) | 2020-07-14 | 2023-07-18 | C. R. Bard, Inc. | Automatic fluid flow system with push-button connection |
| US11931151B2 (en) | 2020-12-22 | 2024-03-19 | C. R. Bard, Inc. | Automated urinary output measuring system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5079357A (en) * | 1973-11-10 | 1975-06-27 |
-
1984
- 1984-04-16 JP JP59076011A patent/JPS60219517A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5079357A (en) * | 1973-11-10 | 1975-06-27 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60219517A (en) | 1985-11-02 |
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