JP2578621B2 - Bathtub water level detector - Google Patents
Bathtub water level detectorInfo
- Publication number
- JP2578621B2 JP2578621B2 JP62286213A JP28621387A JP2578621B2 JP 2578621 B2 JP2578621 B2 JP 2578621B2 JP 62286213 A JP62286213 A JP 62286213A JP 28621387 A JP28621387 A JP 28621387A JP 2578621 B2 JP2578621 B2 JP 2578621B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- bathtub
- air chamber
- water level
- pressure conduit
- 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
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Description
【発明の詳細な説明】 （イ）産業上の利用分野 本発明は浴槽の水位を浴槽からの圧力により検出する
浴槽の水位検出装置に関する。The present invention relates to a bathtub water level detecting device for detecting the water level of a bathtub by the pressure from the bathtub.
（ロ）従来の技術 浴槽の水位を浴槽の圧力により検出する装置が例えば
特開昭56−66642号に開示され、浴槽に接続された往き
管に水位センサを接続し、この水位センサに加わる圧力
に基づいて浴槽の水位が検出される。(B) Prior art A device for detecting the water level of a bathtub by the pressure of the bathtub is disclosed in, for example, Japanese Patent Application Laid-Open No. 56-66642. A water level sensor is connected to a water pipe connected to the bathtub, and the pressure applied to the water level sensor is increased. The water level of the bathtub is detected based on the.
（ハ）発明が解決しようとする問題点 上記従来の技術において、往き管と水位検出器との間
に接続された圧力導管内には空気が入っており、圧力導
管内に水が侵入して圧力導管内を上昇した場合には、水
位センサに加わる圧力が、水の高さ分減少し、浴槽の水
位による圧力より低い圧力が検出され、実際の水位より
低い水位を水位センサが検出する。又、水が圧力導管内
に侵入した場合には、水の表面張力により、水位センサ
に加わる圧力が浴槽から加わる圧力より高くなり、圧力
が高くなった分水位センサの水位検出に誤差が発生する
という問題が発生していた。(C) Problems to be Solved by the Invention In the above-mentioned conventional technique, air is contained in a pressure pipe connected between the going pipe and the water level detector, and water intrudes into the pressure pipe. When the pressure rises in the pressure conduit, the pressure applied to the water level sensor decreases by the height of the water, a pressure lower than the pressure due to the water level in the bathtub is detected, and the water level sensor detects a water level lower than the actual water level. Further, when water enters the pressure conduit, the pressure applied to the water level sensor becomes higher than the pressure applied from the bathtub due to the surface tension of the water, and an error occurs in the water level detection of the increased water pressure level sensor. The problem had occurred.
もちろん、特開昭60−219516号公報に記載されている
ように、圧力検知手段と接続された管よりも断面積の大
きい空気溜りを管の上流に設ければ、上述した問題点は
解消されるが、この特開昭60−219516号公報に記載され
ものでは、圧力検知手段が管及び空気溜りを介して通水
管に接続されているため、通水管を流れる水流の影響が
圧力検知手段に加わり、圧力検知手段の水位検出に誤差
が発生する問題があった。Of course, as described in Japanese Patent Application Laid-Open No. 60-219516, if an air reservoir having a larger cross-sectional area than the pipe connected to the pressure detecting means is provided upstream of the pipe, the above-mentioned problem can be solved. However, in the device described in JP-A-60-219516, since the pressure detecting means is connected to the water pipe through the pipe and the air reservoir, the influence of the water flow flowing through the water pipe affects the pressure detecting means. In addition, there is a problem that an error occurs in the water level detection of the pressure detecting means.
また、浴槽の側壁に取付けられるアダプタに圧力検知
器を内蔵して、浴槽内の水位を直接検出するようにした
ものが実開昭62−106120号公報に開示されているが、こ
のものでは、浴槽内に臨ませたアダプタの先端部の内部
に圧力検出器が配置されているため、浴槽内への突出部
分が大きくなって浴槽の使い勝手が悪くなる不具合があ
った。Further, Japanese Patent Application Laid-Open No. 62-106120 discloses an adapter in which a pressure detector is incorporated in an adapter attached to the side wall of the bathtub to directly detect the water level in the bathtub. Since the pressure detector is disposed inside the distal end portion of the adapter facing the bathtub, there is a problem that the protruding portion into the bathtub becomes large and the usability of the bathtub becomes poor.
本発明は上述の実情に鑑みてなされたものであり、浴
槽の水位検出精度を一層向上させつつ、浴槽内への突出
部分が大きくならないようにすることを目的としてい
る。The present invention has been made in view of the above-described circumstances, and has as its object to improve the water level detection accuracy of a bathtub while preventing a projecting portion into the bathtub from becoming large.
（ニ）問題点を解決するための手段 本発明では、浴槽の側壁に取付けられ、湯の往き部と
復部が区画形成された風呂用アダプタと、この風呂用ア
ダプタの略中央部に介装され、先端部を浴槽内部に臨ん
で開口させる共に、他端部を風呂用アダプタの外部に突
出させた圧力導管と、この圧力導管の他端部に接続され
る圧力検出器とを備え、前記圧力導管には浴槽近くの途
中適所に圧力導管よりも断面積が大なる空気室が設けら
れている構成である。(D) Means for Solving the Problems According to the present invention, a bath adapter which is attached to a side wall of a bath tub and has a hot water return portion and a return portion defined therein, and a bath adapter interposed substantially at the center of the bath adapter A pressure conduit having a distal end opened toward the inside of the bathtub and the other end protruding outside the bath adapter, and a pressure detector connected to the other end of the pressure conduit, The pressure pipe has a configuration in which an air chamber having a larger cross-sectional area than that of the pressure pipe is provided at an appropriate position on the way near the bathtub.
（ホ）作用 このように構成すると、浴槽への給湯時、浴槽からの
圧力により浴槽側の圧力導管を介して浴槽の湯が空気室
に侵入した場合でも、空気室の断面積が圧力導管よりも
大きいため、空気室内の水位上昇は僅かであり、水位上
昇が原因となる水位検出誤差を最小限に抑えることがで
きる。また、入浴後、圧力導管内や空気室内の空気が僅
かに漏れ、空気室内に湯が侵入した場合でも、空気室内
の水位上昇が僅かであるため、次の入浴時には、前回の
入浴時と略同様な水位検出が行える。さらに、空気室内
に湯が侵入したとき、空気室の断面積が圧力導管よりも
大きいため、湯水の表面張力の影響を空気室で緩和で
き、圧力検出器が湯水の表面張力の影響を受けるのを抑
制できる。また、先端部を浴槽内部に臨んで開口させた
浴槽側の圧力導管からの熱伝導により空気室内の空気が
暖められるため、この空気室内の空気温度は浴槽内の湯
温と略等しい温度に保たれることになり、外気に晒され
ている圧力検出器側の圧力導管内の空気の収縮や膨張に
よる圧力検出誤差を空気室で緩和でき、圧力検出器が外
気温の影響を受けるのを抑えることができる。(E) Action With this configuration, when hot water is supplied to the bathtub, even when hot water in the bathtub enters the air chamber through the pressure pipe on the bathtub side due to pressure from the bathtub, the cross-sectional area of the air chamber is reduced by the pressure pipe. Therefore, the water level rise in the air chamber is slight, and the water level detection error caused by the water level rise can be minimized. Also, after bathing, even if air in the pressure conduit or air chamber leaks slightly and hot water enters the air chamber, the water level in the air chamber rises only slightly. Similar water level detection can be performed. Furthermore, when hot water enters the air chamber, the cross-sectional area of the air chamber is larger than that of the pressure pipe, so that the effect of the surface tension of the hot water can be reduced by the air chamber, and the pressure detector is affected by the surface tension of the hot water. Can be suppressed. In addition, since the air in the air chamber is heated by heat conduction from the pressure pipe on the bathtub side whose front end is opened toward the inside of the bathtub, the air temperature in the air chamber is maintained at substantially the same temperature as the hot water temperature in the bathtub. The air chamber can reduce the pressure detection error due to the contraction and expansion of the air in the pressure conduit on the pressure detector side exposed to the outside air, and suppress the influence of the outside temperature on the pressure detector be able to.
さらに、圧力導管は風呂用アダプタの略中央部に介装
され、先端部を浴槽内部に臨んで開口させる共に、他端
部を風呂用アダプタの外部に突出させる構成とし、この
風呂用アダプタの外部に突出した圧力導管の他端部に圧
力検出器が接続されるものであるから、風呂用アダプタ
内に形成された往き部や復部を流れる湯の流れの影響を
圧力検出器が受けないようにでき、湯水の流れの影響に
よる水位検出誤差が抑えられる。Further, the pressure conduit is interposed at a substantially central portion of the bath adapter, and has a configuration in which a distal end portion is opened toward the inside of the bathtub and the other end is projected outside the bath adapter. Since the pressure detector is connected to the other end of the pressure conduit protruding into the bath, the pressure detector is not affected by the flow of hot water flowing through the going part and the returning part formed in the bath adapter. The water level detection error due to the flow of hot and cold water is suppressed.
さらにまた、圧力検出器が風呂用アダプタの外部に突
出した圧力導管の他端部に接続され、浴槽の側壁に取付
けられる風呂用アダプタの先端部の内部に配置されてい
ないので、浴槽内への突出部分が大きくならないように
できる。Furthermore, since the pressure detector is connected to the other end of the pressure conduit protruding outside the bath adapter and is not arranged inside the tip of the bath adapter attached to the side wall of the bathtub, the pressure detector is not connected to the inside of the bathtub. The projection can be prevented from becoming large.
（ヘ）実施例 以下、本発明の一実施例を図面に基づいて詳細に説明
する。(F) Example Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
図面において、（１）は風呂用アダプタで、この風呂
用アダプタ（１）は浴槽の側壁（２）の適所に取付けら
れている。ここで、アダプタ（１）は、浴槽内の突出部
である浴槽内カバー（３）、浴槽外カバー（４）、及び
これらカバー（３），（４）を接続する接続部材（５）
とを備えている。（６）はカバー（３）の前面の吸込み
口（７）に設けられた網状のフィルタ、（3A）は浴槽内
カバー（３）の側壁に複数形成された吐出口、（８），
（９）はアダプタ（１）と側壁（２）との接続部をシー
ルするゴムパッキンである。そして、浴槽外カバー
（４）と、接続部材（５）との間にゴムパッキン
（８），（９）、及び側壁（２）の開口周縁部が挾まれ
ている。アダプタ（１）内は浴槽内カバー（３）、及び
浴槽外カバー（４）により、往き部（1a）と、復部（1
b）とが区画形成されている。In the drawings, (1) is a bath adapter, and the bath adapter (1) is attached to an appropriate position on a side wall (2) of a bathtub. Here, the adapter (1) includes a cover inside the bathtub (3), a cover outside the bathtub (4), which is a protruding portion in the bathtub, and a connecting member (5) for connecting these covers (3) and (4).
And (6) is a mesh filter provided at the suction port (7) on the front face of the cover (3), (3A) is a plurality of discharge ports formed on the side wall of the bathtub cover (3), (8),
(9) is a rubber packing for sealing the connection between the adapter (1) and the side wall (2). The rubber packings (8) and (9) and the opening peripheral portion of the side wall (2) are sandwiched between the bathtub outer cover (4) and the connecting member (5). The inside of the adapter (1) is provided with a go-in part (1a) and a return part (1
b) are sectioned.
（11）はアダプタ（１）の往き部（1a）に挿入された
第１圧力導管であり、この第１圧力導管は例えば内径が
5mmの真鍮製パイプ等により構成されている。第１圧力
導管（11）の一端はフィルタ（６）の内側の往き部（1
a）に位置しており、内部が静圧部になる第１圧力導管
（11）の浴槽側一端（11A）には保護部材（13）が取付
けられている。ここで、保護部材（13）には浴槽内と第
１圧力導管（11）内とを連通する開口（13A）が形成さ
れている。又、保護部材（13）はフィルタ（16）の中央
開口（6a）から浴槽内へ突出している。第１圧力導管
（11）の他端は浴槽外に位置し、この他端には閉塞部材
（11a）が取付けられている。（30）は第１圧力導管（1
1）のアダプタ（１）外側の上壁に接続された空気室で
あり、この空気室（30）の第１圧力導管（11）内部とが
下部開口（31）にて連通している。又、空気室（30）の
内径は第１圧力導管（11）より大きい例えば20mmであ
る。又、空気室（30）の容積は例えば略7ccである。そ
して、空気室（30）の上部に第２圧力導管（12）が接続
され、空気室（30）と第２圧力導管（12）の内部とが上
部開口（32）にて連通している。この第２圧力導管（1
2）は浴室の壁（20）を貫通し、壁（20）の外面に取付
けられた水位検出用の圧力検出器（Ｓ）に接続されてい
る。(11) is a first pressure conduit inserted into the going part (1a) of the adapter (1).
It is composed of a 5mm brass pipe. One end of the first pressure conduit (11) is connected to the inside (1) of the filter (6).
A protection member (13) is attached to one end (11A) of the first pressure conduit (11), which is located at a) and has a static pressure section, on the bathtub side. Here, an opening (13A) is formed in the protective member (13) to communicate between the inside of the bathtub and the inside of the first pressure conduit (11). The protection member (13) projects from the central opening (6a) of the filter (16) into the bathtub. The other end of the first pressure conduit (11) is located outside the bathtub, and the other end is provided with a closing member (11a). (30) is the first pressure conduit (1
An air chamber connected to the upper wall of the adapter (1) outside of (1), and the inside of the first pressure conduit (11) of the air chamber (30) communicates with the lower opening (31). The inner diameter of the air chamber (30) is, for example, 20 mm larger than the first pressure conduit (11). The volume of the air chamber (30) is, for example, approximately 7 cc. The second pressure conduit (12) is connected to the upper part of the air chamber (30), and the air chamber (30) and the inside of the second pressure conduit (12) communicate with each other through the upper opening (32). This second pressure conduit (1
2) penetrates the bathroom wall (20) and is connected to a water level detection pressure sensor (S) mounted on the outer surface of the wall (20).
（14）は保護部材（13）内に収納された温度センサで
あり、この温度センサ（14）から第１圧力導管（11）内
をリード線被覆管（15）が延びている。又、リード線被
覆管（15）は閉塞部材（11a）を貫通して外部へ延びて
いる。(14) is a temperature sensor housed in the protection member (13), and a lead wire cladding tube (15) extends from the temperature sensor (14) in the first pressure conduit (11). Further, the lead wire covering tube (15) extends to the outside through the closing member (11a).
（17）、及び（18）はそれぞれアダプタ（１）の往き
部（1a）、及び復部（1b）に接続された往き管、及び復
管であり、往き管（17）、及び復管（18）は浴室外の温
水ボイラ等の加熱器（19）に接続されている。(17) and (18) are a going pipe and a returning pipe connected to the going part (1a) and the returning part (1b) of the adapter (1), respectively, and the going pipe (17) and the returning pipe ( 18) is connected to a heater (19) such as a hot water boiler outside the bathroom.
上記水位検出装置において、浴槽（１）への給湯によ
り浴槽水位が上昇し、アダプタ（１）に水が達すると、
浴槽内の水による圧力が第１圧力導管（11）、空気室
（30）、及び第２圧力導管（12）内の空気を介して圧力
検出器（Ｓ）に印加される。そして、圧力検出器（Ｓ）
が検出した圧力に基づいて水位が求められる。給湯によ
りさらに水位が上昇し、第1,第２圧力導管（11），（1
2）、及び空気室（30）内の空気に加わる圧力がさらに
大きくなると、前記空気が収縮する。このとき、第１圧
力導管（11）を介して空気室（30）の下部開口（31）ま
で浴槽（１）の湯が侵入していた場合には、空気が収縮
した体積を空気室（30）の断面積で割った値だけ空気室
（30）内の水位が上昇する。又、第２圧力導管（12）と
圧力検出器（Ｓ）との接続部、又は圧力検出器（Ｓ）等
から空気が僅かづつ漏れており、浴槽に水が張られた状
態で放置した場合には、第1,第２圧力導入管（11），
（12）、及び空気室（30）内の空気が僅かづづ減少す
る。すると、空気が減少した量と同量の水が空気室（3
0）内へ侵入し、漏れた空気体積を空気室（30）の断面
積で割った僅かな空気室（30）の水位が上昇する。さら
に、空気室（30）内に水が侵入した場合、水の表面に表
面張力が発生するが、空気室（30）の断面積が大きいた
め、水の表面張力の影響は僅かである。尚、入浴後、浴
槽の湯を排出したとき、空気室（30）に入っていた湯も
第１圧力導管（11）を介して排出される。In the above water level detection device, when the bathtub water level rises due to hot water supply to the bathtub (1) and water reaches the adapter (1),
The pressure of the water in the bath is applied to the pressure detector (S) via the air in the first pressure conduit (11), the air chamber (30), and the second pressure conduit (12). And the pressure detector (S)
The water level is determined based on the pressure detected by. The water level rises further due to the hot water supply, and the first and second pressure conduits (11), (1
2) When the pressure applied to the air in the air chamber (30) further increases, the air contracts. At this time, if hot water in the bathtub (1) has entered the lower opening (31) of the air chamber (30) via the first pressure conduit (11), the volume of the contracted air is reduced to the air chamber (30). The water level in the air chamber (30) rises by the value divided by the cross-sectional area of ()). Also, when air is leaking little by little from the connection between the second pressure conduit (12) and the pressure detector (S), or from the pressure detector (S), etc., and the bath is left standing with water filled. Includes the first and second pressure introduction pipes (11),
(12) and the air in the air chamber (30) gradually decreases. Then, the same amount of water as in the air chamber (3
0) The water level in the air chamber (30), which is obtained by dividing the leaked air volume by the sectional area of the air chamber (30), rises. Furthermore, when water enters the air chamber (30), surface tension is generated on the surface of the water, but the cross-sectional area of the air chamber (30) is large, so the influence of the surface tension of the water is slight. When the hot water in the bathtub is discharged after bathing, the hot water that has entered the air chamber (30) is also discharged via the first pressure conduit (11).
又、年間を通じて浴槽内の湯の温度が熱伝導によりア
ダプタ（１）から空気室（30）へ伝わる。そして空気室
（30）が暖められ、空気室（30）内の空気の温度が浴槽
内の湯温に略等しくなる。一方、例えば冬期の外気温度
が大幅に低下したとき、第２圧力導管（12）のうち外気
に晒される部分の空気が冷え収縮する。ここで、空気室
（30）の容積が大きく、第２圧力導管（12）の容積より
大きいため、第２圧力導管（12）内の空気の収縮による
圧力検出の誤差は僅かである。又、夏期に外気温度が大
幅に上昇し、第２圧力導管（12）内の空気が膨張した場
合にも、圧力検出の誤差は僅かである。Further, the temperature of hot water in the bathtub is transmitted from the adapter (1) to the air chamber (30) by heat conduction throughout the year. Then, the air chamber (30) is heated, and the temperature of the air in the air chamber (30) becomes substantially equal to the hot water temperature in the bathtub. On the other hand, for example, when the outside air temperature in winter significantly decreases, the air of the portion of the second pressure conduit (12) exposed to the outside air cools and contracts. Here, since the volume of the air chamber (30) is large and larger than the volume of the second pressure conduit (12), an error in pressure detection due to contraction of air in the second pressure conduit (12) is small. Also, when the outside air temperature rises significantly in summer and the air in the second pressure conduit (12) expands, the error in pressure detection is small.
本発明は、上記実施例のように構成された浴槽の水位
検出装置であり、第１圧力導管（11）の上に第1,第２圧
力導管（11），（12）より断面積が大きい空気室（30）
を設け、この空気室（30）に第２圧力導管（12）を接続
しており、浴槽への給湯時、第１圧力導管（11）に湯が
侵入し、浴槽の水位上昇により空気室（30）、及び第２
圧力導管（12）内の空気が圧縮されて体積が減少し、そ
の体積分空気室（30）内に湯が侵入したとき、空気室
（30）の断面積が大きいので、空気室（30）内の水位上
昇を僅かに抑えることができ、この結果、水位上昇によ
る圧力検出器（Ｓ）の圧力検出誤差を僅かに抑え、水位
検出の精度向上を図ることができる。The present invention is a bathtub water level detecting device configured as in the above embodiment, and has a larger sectional area on the first pressure conduit (11) than on the first and second pressure conduits (11) and (12). Air chamber (30)
A second pressure pipe (12) is connected to the air chamber (30), and when hot water is supplied to the bathtub, hot water enters the first pressure pipe (11), and the air chamber ( 30), and second
When the air in the pressure conduit (12) is compressed and its volume is reduced, and hot water enters the volume air chamber (30), the air chamber (30) has a large cross-sectional area. The rise of the water level in the inside can be slightly suppressed, and as a result, the pressure detection error of the pressure detector (S) due to the rise of the water level can be slightly suppressed, and the accuracy of the water level detection can be improved.
又、入浴後、第1,第２圧力導管（11），（12）、及び
空気室（30）内の空気が僅かづつ漏れ、空気体積が減少
した場合にも、体積減少による空気室（30）内の水位上
昇が減少体積を空気室（30）の断面積で割った僅かな値
に抑えられ、次の入浴時の圧力検出器（Ｓ）の圧力検出
誤差を僅かに抑え、前回の入浴時と略同様に水位検出を
行うことができる。Further, even if the air in the first and second pressure conduits (11), (12) and the air chamber (30) leaks little by little after bathing and the air volume decreases, the air chamber (30 The rise in the water level in) is reduced to a small value obtained by dividing the reduced volume by the cross-sectional area of the air chamber (30), and the pressure detection error of the pressure detector (S) at the next bathing is slightly suppressed. Water level detection can be performed in substantially the same manner as at the time.
さらに、空気室（30）内に湯が侵入した場合には、湯
の表面に表面張力が発生するが、空気室（30）の断面積
が大きいため、表面張力による圧力検出器（Ｓ）の圧力
検出誤差を僅かに抑え、水位検出の精度向上を図ること
ができる。Further, when hot water enters the air chamber (30), surface tension is generated on the surface of the hot water. However, since the cross-sectional area of the air chamber (30) is large, the pressure detector (S) based on the surface tension is used. The pressure detection error can be slightly suppressed, and the accuracy of water level detection can be improved.
さらにまた、季節の変化により外気温が大幅に変化し
た場合にも、浴槽への給湯時、アダプタ（１）の第１圧
力導管（11）からの熱伝導により容積が大きい空気室
（30）内の空気が暖められ、空気温度が浴槽内の湯温と
略等しくなり、外気温の変化に関係なく略一定に保たれ
るため、外気に晒されている第２圧力導管（12）内の空
気の収縮、膨張による圧力検出誤差を僅かに抑えること
ができ、この結果、季節の変化による圧力検出誤差を僅
かに抑え、年間を通して安定した水位検出を行うことが
できる。Furthermore, even when the outside air temperature changes significantly due to seasonal changes, when the hot water is supplied to the bathtub, the air chamber (30) having a large volume due to heat conduction from the first pressure conduit (11) of the adapter (1). The air in the second pressure conduit (12), which is exposed to the outside air, is heated because the air temperature is substantially equal to the temperature of the hot water in the bathtub and is kept substantially constant regardless of the change in the outside air temperature. The pressure detection error due to the contraction and expansion of the water can be slightly suppressed. As a result, the pressure detection error due to the seasonal change can be slightly suppressed, and the stable water level detection can be performed throughout the year.
さらに、空気室（30）の下部に接続された第１圧力導
管（11）の先端部を浴槽内部に臨んで開口させる構成と
しているので、風呂用アダプタ（１）の往き部（1a）や
復部（1b）を流れる湯水の流れの影響が圧力検出器
（Ｓ）に加わらないようにでき、湯水の流れの影響によ
る水位検出誤差も抑えられる。Furthermore, since the distal end of the first pressure conduit (11) connected to the lower part of the air chamber (30) faces the inside of the bathtub and is opened, the forward part (1a) of the bath adapter (1) and the return part (1a) are connected. The influence of the flow of hot water flowing through the section (1b) can be prevented from being applied to the pressure detector (S), and the water level detection error due to the influence of the flow of hot water can be suppressed.
さらにまた、圧力検出器（Ｓ）が第２圧力導管（12）
及び空気室（30）を介して第１圧力導管（11）に接続さ
れており、浴槽の側壁（２）に取付けられる風呂用アダ
プタ（１）の先端部の内部に配置されていないので、浴
槽内への突出部分が大きくならないようにできる。Furthermore, the pressure detector (S) is connected to the second pressure conduit (12).
And is connected to the first pressure conduit (11) through the air chamber (30), and is not disposed inside the distal end of the bath adapter (1) attached to the side wall (2) of the bathtub. It is possible to prevent the projecting portion from becoming large.
（ト）発明の効果 本発明は以上の説明から明らかなように、浴槽の側壁
に取付けられ、湯の往き部と復部が区画形成された風呂
用アダプタと、この風呂用アダプタの略中央部に介装さ
れ、先端部を浴槽内部に臨んで開口させる共に、他端部
を風呂用アダプタの外部に突出させた圧力導管と、この
圧力導管の他端部に接続される圧力検出器とを備え、前
記圧力導管には浴槽近くの途中適所に圧力導管よりも断
面積が大なる空気室が設けられている構成であるから次
のような効果を奏する。(G) Advantages of the Invention As is clear from the above description, the present invention is attached to a side wall of a bathtub and has a bath adapter having a hot water return portion and a return portion defined therein, and a substantially central portion of the bath adapter. A pressure conduit having a distal end opening toward the inside of the bathtub and having the other end protruding outside the bath adapter, and a pressure detector connected to the other end of the pressure conduit. Since the pressure conduit is provided with an air chamber having a larger cross-sectional area than the pressure conduit at an appropriate position on the way near the bathtub, the following effects are obtained.
僅かな空気漏れによる空気室内への湯水の侵入の影響
や、湯水の表面張力の影響、並びに外気温の影響による
水位検出誤差を最小限に抑えることが可能となるばかり
でなく、風呂用アダプタを通して流れる湯水の流れの影
響による水位検出誤差を抑えることが可能となり、浴槽
の水位検出精度を一層向上させることができる。In addition to minimizing the effect of infiltration of hot or cold water into the air chamber due to a slight air leak, the effect of surface tension of hot water, and the error in water level detection due to the effect of outside air temperature, it is also possible to minimize the Water level detection errors due to the influence of flowing hot and cold water can be suppressed, and the accuracy of detecting the water level in the bathtub can be further improved.
圧力検出器が風呂用アダプタの外部に突出した圧力導
管の他端部に接続され、浴槽の側壁に取付けられる風呂
用アダプタの先端部の内部に配置されていないので、浴
槽内への突出部分が大きくならないようにでき、浴槽の
使い勝手を損なわないようにできる。Since the pressure detector is connected to the other end of the pressure conduit protruding outside the bath adapter and is not arranged inside the tip of the bath adapter attached to the side wall of the bathtub, the protruding portion into the bathtub is It is possible to keep the size of the bathtub from becoming large and not to impair the convenience of the bathtub.
図面は本発明の一実施例として示した浴槽給湯装置の概
略断面図である。 （Ｓ）……圧力検出器、（11）……第１圧力導管、（1
2）……第２圧力導管、（30）……空気室。The drawing is a schematic sectional view of a bathtub water heater shown as one embodiment of the present invention. (S) pressure detector (11) first pressure conduit (1
2) Second pressure conduit, (30) Air chamber.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 池田 道夫 大阪府守口市京阪本通２丁目18番地 三 洋電機株式会社内 (56)参考文献 特開 昭60−219516（ＪＰ，Ａ) 実開 昭62−106120（ＪＰ，Ｕ) 実開 昭61−130856（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continued on the front page (72) Michio Ikeda 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References JP-A-60-219516 (JP, A) 62-106120 (JP, U) Fully open Showa 61-130856 (JP, U)
Claims (1)
部が区画形成された風呂用アダプタと、この風呂用アダ
プタの略中央部に介装され、先端部を浴槽内部に臨んで
開口させる共に、他端部を風呂用アダプタの外部に突出
させた圧力導管と、この圧力導管の他端部に接続される
圧力検出器とを備え、前記圧力導管には浴槽近くの途中
適所に圧力導管よりも断面積が大なる空気室が設けられ
ていることを特徴とする浴槽の水位検出装置。1. A bath adapter which is attached to a side wall of a bathtub and has a hot water return portion and a return portion defined therein. The bath adapter is interposed at a substantially central portion of the bath adapter, with a front end portion facing the inside of the bathtub. A pressure conduit having an opening and the other end protruding outside of the bath adapter, and a pressure detector connected to the other end of the pressure conduit, wherein the pressure conduit is provided at an appropriate position on the way near the bathtub. A water level detecting device for a bathtub, wherein an air chamber having a larger sectional area than a pressure conduit is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62286213A JP2578621B2 (en) | 1987-11-12 | 1987-11-12 | Bathtub water level detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62286213A JP2578621B2 (en) | 1987-11-12 | 1987-11-12 | Bathtub water level detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01127855A JPH01127855A (en) | 1989-05-19 |
| JP2578621B2 true JP2578621B2 (en) | 1997-02-05 |
Family
ID=17701437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62286213A Expired - Lifetime JP2578621B2 (en) | 1987-11-12 | 1987-11-12 | Bathtub water level detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2578621B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7229164B2 (en) | 2002-02-13 | 2007-06-12 | Silverbrook Research Pty Ltd | Printer for conveyance with wireless data port |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0610624B2 (en) * | 1984-04-16 | 1994-02-09 | 松下電器産業株式会社 | Bath kettle with water level detector |
| JPH0311706Y2 (en) * | 1985-12-24 | 1991-03-20 |
-
1987
- 1987-11-12 JP JP62286213A patent/JP2578621B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01127855A (en) | 1989-05-19 |
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