JP2721544B2 - Pressure sensor protection device in automatic bath equipment with water heater - Google Patents
Pressure sensor protection device in automatic bath equipment with water heaterInfo
- Publication number
- JP2721544B2 JP2721544B2 JP1104725A JP10472589A JP2721544B2 JP 2721544 B2 JP2721544 B2 JP 2721544B2 JP 1104725 A JP1104725 A JP 1104725A JP 10472589 A JP10472589 A JP 10472589A JP 2721544 B2 JP2721544 B2 JP 2721544B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure sensor
- hot water
- air tank
- water supply
- pressure
- 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
Landscapes
- Measuring Fluid Pressure (AREA)
- Control For Baths (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、器具本体から循環追焚管路を経由して浴槽
への湯張りを行ない、浴槽中の水位を湯張り管路に配設
した圧力センサにより検出し、浴槽水位が設定水位に達
したことを検出すると湯張りを停止すべくなした給湯器
付自動風呂装置における圧力センサ保護装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] The present invention fills a bath from a device main body to a bathtub via a circulation reheating line, and arranges a water level in the bathtub in the fill line. The present invention relates to a pressure sensor protection device in an automatic bath apparatus with a water heater, which stops the filling when the bath water level reaches a set water level.
前記の如く浴槽中の水位を検出する圧力センサは、浴
槽水位という微少な圧力(例えば0.2〜0.75kg)を検出
しようとする精密電子部品であって、構造上耐圧性は非
常に低いのに対し、水道の給水圧は通常3kg、高いとこ
ろでは5kgもあり、また、器具内に配設されている電磁
弁の開閉による水撃などの衝撃波が器具内に発生するの
で、圧力センサにこのような過大な圧力が加わると測定
精度がずれたり、破壊されたりするおそれがある。As described above, the pressure sensor for detecting the water level in the bathtub is a precision electronic component for detecting a minute pressure (for example, 0.2 to 0.75 kg) of the bathtub water level. However, the water supply pressure of the water supply is usually 3 kg, and 5 kg at high places.In addition, shock waves such as water hammer due to opening and closing of the solenoid valve arranged in the instrument are generated in the instrument. If an excessive pressure is applied, the measurement accuracy may be deviated or broken.
このため、従来は第3図に示すようにして圧力センサ
に過大な圧力が加わらないようにしていた。すなわち、
第3図において、1は器具本体、2は給湯用熱交換器、
3は注湯管路に設けたバキュームブレーカ、4,5は同じ
く逆止弁、6は給湯電磁弁、7は循環追焚管路に配設し
た追焚電磁弁、8は圧力センサ、9は追焚用熱交換器、
10は循環追焚用ポンプ、11は循環往管、12は循環戻り
管、13は浴槽、14は浴槽循環金具を示し、循環追焚ポン
プ10と圧力センサ8との間に追焚電磁弁7を配設し、浴
槽への湯張り時には、追焚電磁弁7を閉じ、追焚用循環
管路の戻り管12のみを介して湯張りするようにしてい
る。For this reason, conventionally, as shown in FIG. 3, an excessive pressure was not applied to the pressure sensor. That is,
In FIG. 3, 1 is an appliance body, 2 is a heat exchanger for hot water supply,
3 is a vacuum breaker provided in the pouring line, 4 and 5 are also check valves, 6 is a hot water supply solenoid valve, 7 is a reheating solenoid valve disposed in the circulation reheating line, 8 is a pressure sensor, and 9 is a pressure sensor. Heat exchanger for reheating,
10 is a circulation reheating pump, 11 is a circulation forward pipe, 12 is a circulation return pipe, 13 is a bathtub, 14 is a bathtub circulation fitting, and a reheating solenoid valve 7 is provided between the circulation reheating pump 10 and the pressure sensor 8. When the bath is filled with hot water, the supplementary heating electromagnetic valve 7 is closed and the hot water is filled only via the return pipe 12 of the supplementary heating circulation pipe.
すなわち、第3図に示す自動風呂装置は、図示を省略
したリモコンの自動運転スイッチをオンにすると、追焚
電磁弁7を閉じると共に給湯電磁弁6を開き、給湯用熱
交換器2により加熱された湯を逆止弁4,バキュームブレ
ーカ3,逆止弁5,給湯電磁弁6,ポンプ10を介して浴槽中に
給湯し、その間、圧力センサ8によりエアを含む循環口
圧力を検出し、浴槽中の水位が循環金具14より上になっ
て循環口圧力が上昇したことを検出すると、給湯電磁弁
6を閉じると共に追焚電磁弁7を開き、ポンプ10を駆動
して追焚管路のエア抜きを行ない、次いで追焚電磁弁7
を閉じ、圧力センサ8により水位を静圧により検出しな
がら給湯電磁弁6を開いて循環追焚管路の戻り管12のみ
を経由して浴槽中への湯張りを行ない、圧力センサ8が
設定水位に達したことを検知すると給湯電磁弁6を閉じ
て設定水位の湯張りを終了するようになっている。That is, in the automatic bath apparatus shown in FIG. 3, when an automatic operation switch of a remote controller (not shown) is turned on, the additional heating electromagnetic valve 7 is opened and the hot water supply electromagnetic valve 6 is opened, so that the automatic bath apparatus is heated by the hot water supply heat exchanger 2. Hot water is supplied to the bathtub via the check valve 4, the vacuum breaker 3, the check valve 5, the hot water supply solenoid valve 6, and the pump 10, and during that time, the pressure sensor 8 detects the pressure of the circulation port containing air, When it is detected that the water level in the inside rises above the circulation fitting 14 and the circulation port pressure rises, the hot water supply solenoid valve 6 is closed and the supplementary heating solenoid valve 7 is opened, and the pump 10 is driven to drive the air in the supplementary heating pipe line. Drain, then reheat solenoid valve 7
Is closed, the hot water supply solenoid valve 6 is opened while the water level is detected by static pressure by the pressure sensor 8, and hot water is filled in the bathtub through only the return pipe 12 of the circulation reheating line, and the pressure sensor 8 is set. When it is detected that the water level has been reached, the hot water supply electromagnetic valve 6 is closed to terminate the filling of the set water level.
従来技術は、前記の如く、給湯を一旦停止させた状態
でエア抜きを行なうため、本来の湯張り時間の外にエア
抜きの時間が必要となり、さらに、循環追焚管路の戻り
管のみ(往管のみの場合もある)を通して給湯せざるを
得ないので、潰食を防止するために給湯流量が制限さ
れ、器具の能力を下廻る能力でしか湯張りを行なうこと
ができず、湯張りに長時間を必要とするという問題があ
る。In the prior art, as described above, since air is evacuated while the hot water supply is temporarily stopped, air bleeding time is required in addition to the original hot water filling time, and only the return pipe of the circulation additional heating line ( The hot water has to be supplied through the outgoing pipe only), so the flow rate of hot water is restricted to prevent erosion, and the water can only be filled with a capacity lower than the capacity of the appliance. Requires a long time.
本発明は、前記の如き従来技術の問題点を改善し、多
量の注湯を行なって器具の水圧が高くなっても、また、
電磁弁の開閉などにより水撃が器具内に発生しても、圧
力センサに過度の圧力が作用するおそれがない給湯器付
自動風呂装置における圧力センサ保護装置を提供せんと
するものである。The present invention solves the problems of the prior art as described above, even if the water pressure of the appliance is increased by performing a large amount of pouring,
An object of the present invention is to provide a pressure sensor protection device in an automatic bath apparatus with a water heater, in which even if a water hammer occurs in the appliance due to opening and closing of an electromagnetic valve, there is no possibility that excessive pressure acts on the pressure sensor.
本発明は、前記の如き目的を達成せんがため、湯張り
管路の一部にエアタンクを連結すると共に、その湯張り
管路からエアタンクに至る管路の途中にベンチュリー部
を形成し、かつ該ベンチュリー部とエアタンクとの間に
圧力センサを配設したことを特徴とする。In order to achieve the object as described above, the present invention connects an air tank to a part of a filling line and forms a venturi portion in the middle of the line from the filling line to the air tank. A pressure sensor is provided between the venturi section and the air tank.
本発明は、前記の如く、湯張り管路の一部にエアタン
クを連結すると共に、その湯張り管路からエアタンクに
至る管路の途中にベンチュリー部を形成し、かつ該ベン
チュリー部とエアタンクとの間に圧力センサを配設した
ので、出湯量を多くして管路内の水圧が高くなっても、
ベンチュリー部によって圧力を低下させて圧力センサに
高圧が掛かることがなくなり、また、電磁弁の開閉など
による水撃が生じても、エアタンク内の空気を圧縮して
衝撃波を吸収し、かくして圧力センサに高圧が掛かるの
を防止することができる。The present invention, as described above, connects an air tank to a part of a filling line, forms a venturi partway in the line from the filling line to the air tank, and connects the venturi part to the air tank. Since a pressure sensor is installed between the two, even if the amount of hot water is increased and the water pressure in the pipeline rises,
The venturi reduces the pressure and prevents high pressure from being applied to the pressure sensor.Also, even if a water hammer occurs due to the opening and closing of a solenoid valve, etc., the air in the air tank is compressed to absorb shock waves, and thus to the pressure sensor. High pressure can be prevented from being applied.
以下、本発明の一実施例を第1図および第2図につい
て説明する。An embodiment of the present invention will be described below with reference to FIGS.
第1図は本発明の一実施例を示す水系統図で、1は器
具本体、2は給湯用熱交換器、3はバキュームブレー
カ、4,5は逆止弁、6は給湯電磁弁、9は循環追焚用熱
交換器、10は循環追焚用ポンプ、11は循環往管、12は循
環戻り管、13は浴槽、14は浴槽循環金具を示す。本発明
においては、従来使用されていた追焚電磁弁の使用を廃
止し、給湯電磁弁6を開くと循環往管11と同戻り管12と
の双方の管路を経由して浴槽13中に湯張りし得るように
し、かつ、湯張り管路の任意の位置にベンチュリー管15
を取付け、そのベンチュリー管15の小径部にエアタンク
16を接続すると共に、そのエアタンク16とベンチュリー
管15との間に圧力センサ8を配設する。FIG. 1 is a water system diagram showing an embodiment of the present invention, wherein 1 is an appliance body, 2 is a heat exchanger for hot water supply, 3 is a vacuum breaker, 4 and 5 are check valves, 6 is a hot water supply solenoid valve, 9 Denotes a heat exchanger for circulation reheating, 10 denotes a pump for circulation reheating, 11 denotes a circulation outgoing pipe, 12 denotes a circulation return pipe, 13 denotes a bathtub, and 14 denotes a bathtub circulation fitting. In the present invention, the use of the conventionally used additional heating electromagnetic valve is abolished, and when the hot water supply electromagnetic valve 6 is opened, the hot water supply electromagnetic valve 6 is introduced into the bathtub 13 via both the circulation outgoing pipe 11 and the return pipe 12. Venturi pipe 15 should be placed so that it can be filled with water, and
Attach the air tank to the small diameter part of the venturi tube 15.
The pressure sensor 8 is disposed between the air tank 16 and the venturi tube 15.
すなわち、第2図は本発明の主要部をなす第1図A部
の拡大断面図であって、ベンチュリー管15の小径部に接
続管17,ジョイント金具18,接続管19よりなる分岐検出管
を接続し、その接続管19の先端に所要の容積を有するエ
アタンク16を接続し、かつジョイント金具19に圧力セン
サ8を取付ける。なお、20はジョイント金具18と圧力セ
ンサ8との間に介在させたOリングである。That is, FIG. 2 is an enlarged sectional view of a part A in FIG. 1 which is a main part of the present invention, and a branch detection tube including a connecting pipe 17, a joint fitting 18, and a connecting pipe 19 is provided in a small diameter portion of the venturi pipe 15. The air tank 16 having a required volume is connected to the end of the connection pipe 19, and the pressure sensor 8 is attached to the joint fitting 19. Reference numeral 20 denotes an O-ring interposed between the joint fitting 18 and the pressure sensor 8.
なお、第1図および第2図においては、球状のエアタ
ンクを使用した例を示しているが、本発明はこのような
実施例に限定されるものではなく、例えばチューブ状の
エアタンクを使用することもできる。Although FIGS. 1 and 2 show an example in which a spherical air tank is used, the present invention is not limited to such an embodiment. For example, a tubular air tank may be used. Can also.
本発明の圧力センサ保護装置は、前記の如く構成され
ているので、給湯電磁弁6をいっぱいに開いて多量の給
湯を行なうと、湯張り管路内には高い給水圧の湯が流れ
るが、ベンチュリー管15によりその圧力は減少され、そ
の減少された給水圧が圧力センサ8に掛かるので、圧力
センサを保護することができる。また、給湯電磁弁6を
急激に開いたとき、管路内には第4図に示すような水撃
が生ずるが、本発明においては、ベンチュリー管15によ
ってその圧力を減少せしめると共に、特にエアタンク16
中のエアを圧縮することによって第5図に示すように圧
力センサに作用する水撃を緩和させることができ、さら
に、給湯電磁弁6を急激に閉じたとき、管路内には第6
図に示すような水撃が生ずるが、本発明においては前記
と同様にした第7図に示すように圧力センサに作用する
水撃を減少および緩和させることができる。Since the pressure sensor protection device of the present invention is configured as described above, if a large amount of hot water is supplied by fully opening the hot water supply electromagnetic valve 6, hot water with a high water supply pressure flows through the hot water supply line. The pressure is reduced by the venturi tube 15 and the reduced supply pressure is applied to the pressure sensor 8, so that the pressure sensor can be protected. When the hot-water supply electromagnetic valve 6 is suddenly opened, a water hammer as shown in FIG. 4 is generated in the pipe. In the present invention, the pressure is reduced by the venturi pipe 15 and the air tank 16 is used.
By compressing the air inside, water hammer acting on the pressure sensor can be reduced as shown in FIG. 5, and when the hot water supply electromagnetic valve 6 is rapidly closed, the sixth
Although a water hammer as shown in the figure occurs, in the present invention, the water hammer acting on the pressure sensor can be reduced and reduced as shown in FIG.
なお、図示の実施例は、給湯用熱交換器2の出側に流
量制御バルブ21を配設した例を示しており、給湯電磁弁
の開閉時にこの流量制御バルブを絞るようにすれば圧力
センサの保護を一層確実に行なうことができる。The illustrated embodiment shows an example in which a flow control valve 21 is provided on the outlet side of the hot water supply heat exchanger 2. If the flow control valve is throttled when the hot water supply electromagnetic valve is opened and closed, the pressure sensor can be reduced. Can be more reliably protected.
以上述べたように、本発明によれば、循環追焚管路の
往管と戻り管とをフルに活用して湯張りを行なっても、
圧力センサに耐圧以上の圧力がかかることを防止し、湯
張り所要時間を短縮すると共に器具の持つ給湯能力を最
大限に生かして湯張りすることができる効果がある。As described above, according to the present invention, even if the filling is performed by fully utilizing the outgoing pipe and the return pipe of the circulation additional heating pipe,
This prevents the pressure sensor from being applied with a pressure higher than the withstand pressure, shortens the time required for filling, and makes it possible to make full use of the hot water supply capability of the appliance to fill.
【図面の簡単な説明】 第1図は本発明を適用した給湯器付自動風呂装置の水系
統図、第2図は第1図のA部の拡大断面図、第3図は従
来の給湯器自動風呂装置の水系統図である。第4図は給
湯電磁弁を開いたときの管路内の水撃線図、第5図は第
4図の場合の圧力センサにかかる圧力線図、第6図は給
湯電磁弁を閉じたときの管路内の水撃線図、第7図は第
6図の場合の圧力センサにかかる圧力線図である。 2……給湯用熱交換器、6……給湯電磁弁、8……圧力
センサ、15……ベンチュリー管、16……エアタンク。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a water system diagram of an automatic bath apparatus with a water heater to which the present invention is applied, FIG. 2 is an enlarged sectional view of a portion A in FIG. 1, and FIG. 3 is a conventional water heater. It is a water system diagram of an automatic bath apparatus. FIG. 4 is a water hammer diagram in the pipe line when the hot water supply solenoid valve is opened, FIG. 5 is a pressure diagram applied to the pressure sensor in the case of FIG. 4, and FIG. 6 is a case where the hot water supply solenoid valve is closed. FIG. 7 is a pressure diagram applied to the pressure sensor in the case of FIG. 2 Heat exchanger for hot water supply, 6 Solenoid valve for hot water supply, 8 Pressure sensor, 15 Venturi tube, 16 Air tank.
Claims (1)
への湯張りを行ない、浴槽中の水位を湯張り管路に配設
した圧力センサにより検出し、浴槽水位が設定水位に達
したことを検出すると湯張りを停止すべくなした給湯器
付自動風呂装置において、前記湯張り管路の一部にエア
タンクを連結すると共に、その湯張り管路からエアタン
クに至る管路の途中にベンチュリー部を形成し、かつ該
ベンチュリー部とエアタンクとの間に圧力センサを配設
したことを特徴とする給湯器付自動風呂装置における圧
力センサ保護装置。(1) Filling the bath from the appliance body to the bath tub via the circulation reheating line, detecting the water level in the bath tub by a pressure sensor arranged in the hot line, and setting the bath tub water level to the set water level. In an automatic bath apparatus with a water heater, which stops the filling when it is detected that an air tank has been connected, an air tank is connected to a part of the filling line, and a halfway of a line from the filling line to the air tank. A pressure sensor between the venturi and the air tank, wherein the pressure sensor is provided between the venturi and the air tank.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1104725A JP2721544B2 (en) | 1989-04-26 | 1989-04-26 | Pressure sensor protection device in automatic bath equipment with water heater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1104725A JP2721544B2 (en) | 1989-04-26 | 1989-04-26 | Pressure sensor protection device in automatic bath equipment with water heater |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02287055A JPH02287055A (en) | 1990-11-27 |
JP2721544B2 true JP2721544B2 (en) | 1998-03-04 |
Family
ID=14388474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1104725A Expired - Lifetime JP2721544B2 (en) | 1989-04-26 | 1989-04-26 | Pressure sensor protection device in automatic bath equipment with water heater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2721544B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113522171B (en) * | 2021-07-21 | 2024-03-19 | 高砂电气(苏州)有限公司 | Quantitative discharge device |
-
1989
- 1989-04-26 JP JP1104725A patent/JP2721544B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH02287055A (en) | 1990-11-27 |
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