JP6894394B2 - Cleaning liquid generator and bathtub cleaning device - Google Patents

Cleaning liquid generator and bathtub cleaning device Download PDF

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JP6894394B2
JP6894394B2 JP2018057958A JP2018057958A JP6894394B2 JP 6894394 B2 JP6894394 B2 JP 6894394B2 JP 2018057958 A JP2018057958 A JP 2018057958A JP 2018057958 A JP2018057958 A JP 2018057958A JP 6894394 B2 JP6894394 B2 JP 6894394B2
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detergent
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JP2019166247A (en
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雄 岡野
雄 岡野
務 篠原
務 篠原
祐樹 和田
祐樹 和田
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Rinnai Corp
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Description

本発明は、水に洗剤を混合して洗浄液を生成する洗浄液生成装置及びこの洗浄液生成装置を具備する浴槽洗浄装置に関する。 The present invention relates to a cleaning liquid generator that mixes a detergent with water to generate a cleaning liquid, and a bathtub cleaning device including the cleaning liquid generator.

従来、この種の浴槽洗浄装置として、例えば特許文献１により、洗浄液生成装置で生成された洗浄液を浴槽内に噴射する洗浄ノズルを備えるものが知られている。この洗浄液生成装置は、下流端が洗浄ノズルに接続された、水が流れる第１流路と、第１流路の途中に設けられた、流路断面積が最小となるベンチュリー部と、ベンチュリー部の周壁部に開設された吸込み口と、洗剤タンクと、下流端が吸込み口に接続された、洗剤タンクからの洗剤が流れる第２流路とを備え、第１流路内の水流によりベンチュリー部において発生する負圧で吸込み口から洗剤を吸引し、水に洗剤を混合して洗浄液を生成するように構成されている。 Conventionally, as a bathtub cleaning device of this type, for example, according to Patent Document 1, a device including a cleaning nozzle for injecting a cleaning liquid generated by a cleaning liquid generating device into a bathtub is known. In this cleaning liquid generator, a first flow path through which water flows and a downstream end connected to a cleaning nozzle, a venturi section provided in the middle of the first flow path, and a venturi section having the smallest flow path cross-sectional area, and a venturi section. It is equipped with a suction port opened on the peripheral wall of the wall, a detergent tank, and a second flow path through which detergent from the detergent tank flows, with the downstream end connected to the suction port. The detergent is sucked from the suction port by the negative pressure generated in the water, and the detergent is mixed with water to generate a cleaning liquid.

また、第２流路には、第２流路を開通、遮断する弁装置として、洗剤弁が介設されている。洗剤弁は、弁室と、弁室内に弁室の端部の弁座に接離自在に設けられた弁体と、弁体を弁座に着座する閉じ方向に付勢する弁バネと、弁体を弁バネに抗して開き方向に移動させる電磁ソレノイドとを有する電磁弁で構成されている。ここで、洗剤弁の弁室が弁座に形成する弁孔に対し洗剤の流れ方向下流側に位置していると、洗剤弁を閉弁させた状態で洗浄ノズルから水を噴射してすすぎを行う場合に、ベンチュリー部で発生する負圧により弁体が弁バネに抗して開き方向に動いて洗剤弁が開弁してしまう可能性がある。そこで、洗剤弁の弁室は、弁座に形成する弁孔に対し洗剤の流れ方向上流側に位置させている。 Further, a detergent valve is interposed in the second flow path as a valve device for opening and shutting off the second flow path. The detergent valve is a valve chamber, a valve body provided in the valve chamber so as to be detachable from the valve seat at the end of the valve chamber, a valve spring that urges the valve body to sit on the valve seat in the closing direction, and a valve. It is composed of a solenoid valve having an electromagnetic solenoid that moves the body in the opening direction against the valve spring. Here, if the valve chamber of the detergent valve is located on the downstream side in the flow direction of the detergent with respect to the valve hole formed in the valve seat, water is sprayed from the cleaning nozzle to rinse with the detergent valve closed. When doing so, there is a possibility that the valve body moves in the opening direction against the valve spring due to the negative pressure generated in the venturi portion, and the detergent valve opens. Therefore, the valve chamber of the detergent valve is located on the upstream side in the flow direction of the detergent with respect to the valve hole formed in the valve seat.

ところで、第１流路のベンチュリー部下流側の部分（洗浄ノズルを含む）での詰まりによりベンチュリー部の内圧が高まることがある。この場合、洗剤弁の弁体が弁孔を介して作用する水圧により開き方向に動いて洗剤弁が開弁し、洗剤タンクに水が逆流してしまう可能性がある。そして、洗剤タンクに水が逆流すると、洗剤が薄まってしまい、更には、洗剤タンクから洗剤が溢れ出てしまうこともある。 By the way, the internal pressure of the Venturi portion may increase due to clogging in the portion (including the cleaning nozzle) on the downstream side of the Venturi portion of the first flow path. In this case, the valve body of the detergent valve may move in the opening direction due to the water pressure acting through the valve hole to open the detergent valve, and water may flow back into the detergent tank. When water flows back into the detergent tank, the detergent is diluted, and the detergent may overflow from the detergent tank.

特開２０１７−１３１４０７号公報JP-A-2017-131407

本発明は、以上の点に鑑み、第１流路のベンチュリー部下流側部分での詰まりを生じても、洗剤タンクに水が逆流することを防止できるようにした洗浄液生成装置及びこの洗浄液生成装置を用いた浴槽洗浄装置を提供することをその課題としている。 In view of the above points, the present invention is a cleaning liquid generating device and the cleaning liquid generating device capable of preventing water from flowing back into the detergent tank even if the downstream portion of the venturi portion of the first flow path is clogged. It is an object of the present invention to provide a bathtub cleaning device using the above.

上記課題を解決するために、本発明は、水が流れる第１流路と、第１流路の途中に設けられた、流路断面積が最小となるベンチュリー部と、ベンチュリー部の周壁部に開設された吸込み口と、洗剤タンクと、下流端が吸込み口に接続された、洗剤タンクからの洗剤が流れる第２流路とを備え、第１流路内の水流によりベンチュリー部において発生する負圧で吸込み口から洗剤を吸引し、水に洗剤を混合して洗浄液を生成する洗浄液生成装置であって、第２流路に、第２流路を開通、遮断する弁装置を介設するものにおいて、弁装置は、直列に接続された第１洗剤弁と第２洗剤弁とで構成され、第１と第２の各洗剤弁は、弁室と、弁室内に弁室の端部の弁座に接離自在に設けられた弁体と、弁体を弁座に着座する閉じ方向に付勢する弁バネと、弁体を弁バネに抗して開き方向に移動させる電磁ソレノイドとを有する電磁弁であって、第１洗剤弁は、弁座に形成する弁孔に対し弁室が洗剤の流れ方向上流側に位置し、第２洗剤弁は、弁座に形成する弁孔に対し弁室が洗剤の流れ方向下流側に位置することを特徴とする。 In order to solve the above problems, the present invention provides a first flow path through which water flows, a venture portion provided in the middle of the first flow path, which minimizes the cross-sectional area of the flow path, and a peripheral wall portion of the venture portion. It is equipped with an opened suction port, a detergent tank, and a second flow path through which detergent from the detergent tank flows, with the downstream end connected to the suction port. A cleaning liquid generator that sucks detergent from the suction port with pressure and mixes the detergent with water to generate a cleaning liquid. A valve device that opens and shuts off the second flow path is provided in the second flow path. In, the valve device is composed of a first detergent valve and a second detergent valve connected in series, and the first and second detergent valves are a valve chamber and a valve at the end of the valve chamber in the valve chamber. It has a valve body that is detachably provided on the seat, a valve spring that urges the valve body to sit on the valve seat in the closing direction, and an electromagnetic solenoid that moves the valve body in the opening direction against the valve spring. The first detergent valve is an electromagnetic valve, and the valve chamber is located upstream of the valve hole formed in the valve seat in the detergent flow direction, and the second detergent valve is a valve with respect to the valve hole formed in the valve seat. The chamber is located on the downstream side in the detergent flow direction.

また、本発明は、洗浄液生成装置で生成された洗浄液を浴槽内に噴射する洗浄ノズルを備える浴槽洗浄装置であって、洗浄液生成器として上記本発明のものを用いることを特徴とする。 Further, the present invention is a bathtub cleaning device provided with a cleaning nozzle for injecting a cleaning liquid generated by the cleaning liquid generator into the bathtub, and is characterized in that the above-mentioned one of the present invention is used as the cleaning liquid generator.

本発明によれば、第１流路のベンチュリー部下流側部分での詰まりを生じて、ベンチュリー部の内圧が高くなっても、第２洗剤弁は、ベンチュリー部から吸込み口を介して作用する水圧で弁体が閉じ方向に押圧されて閉弁状態に維持され、洗剤タンクへの水の逆流を防止することができる。そして、洗剤タンクへの水の逆流を防止できることから、洗剤が薄められることや、更には、浴室内等の洗剤タンク設置場所に洗剤が溢れ出る被害を防止できる。尚、ベンチュリー部で発生する負圧により第２洗剤弁が仮に開弁しても、第１洗剤弁は閉弁状態に維持されるため、第２流路が不用意に開通することはない。 According to the present invention, even if the internal pressure of the Venturi portion becomes high due to clogging in the downstream portion of the Venturi portion of the first flow path, the second detergent valve operates from the Venturi portion through the suction port. The valve body is pressed in the closing direction to maintain the valve closed state, and the backflow of water to the detergent tank can be prevented. Since the backflow of water to the detergent tank can be prevented, the detergent can be diluted, and further, the damage caused by the detergent overflowing to the place where the detergent tank is installed, such as in the bathroom, can be prevented. Even if the second detergent valve is temporarily opened due to the negative pressure generated in the venturi portion, the first detergent valve is maintained in the closed state, so that the second flow path is not opened carelessly.

また、本発明において、第２流路を開通させる際は、第１洗剤弁を開弁させた後に、第２洗剤弁を開弁させることが望ましい。これによれば、後記詳述する如く第１と第２の各洗剤弁をスムーズに開弁動作させることができる。 Further, in the present invention, when opening the second flow path, it is desirable to open the second detergent valve after opening the first detergent valve. According to this, each of the first and second detergent valves can be smoothly opened as described in detail later.

また、本発明において、第２流路を遮断する際は、第２洗剤弁を閉弁させた後に、第１洗剤弁を閉弁させることが望ましい。これによれば、後記詳述する如く第１洗剤弁の閉弁時に弁体が弁座に勢いよく衝突して、弁体や弁座の摩耗を生ずることを抑制でき、耐久性が向上する。 Further, in the present invention, when shutting off the second flow path, it is desirable to close the first detergent valve after closing the second detergent valve. According to this, as will be described in detail later, it is possible to prevent the valve body from vigorously colliding with the valve seat when the first detergent valve is closed, causing wear of the valve body and the valve seat, and the durability is improved.

ところで、第１洗剤弁を第２洗剤弁に対し洗剤の流れ方向下流側に配置することも可能である。然し、この場合には、第１流路のベンチュリー部下流側部分での詰まりを生じて、ベンチュリー部の内圧が高くなり、第１洗剤弁の弁体がベンチュリー部から吸込み口を介して作用する水圧で開き方向に押圧されて、一旦開き方向に動作すると、後記詳述する如く第１洗剤弁の弁体のチャタリングによる異音が発生する。 By the way, it is also possible to arrange the first detergent valve on the downstream side in the detergent flow direction with respect to the second detergent valve. However, in this case, clogging occurs in the downstream portion of the Venturi portion of the first flow path, the internal pressure of the Venturi portion increases, and the valve body of the first detergent valve acts from the Venturi portion through the suction port. Once pressed in the opening direction by water pressure and once operated in the opening direction, an abnormal noise due to chattering of the valve body of the first detergent valve is generated as described in detail later.

そのため、本発明においては、第２洗剤弁を第１洗剤弁に対し洗剤の流れ方向下流側に配置することが望ましい。これによれば、ベンチュリー部の内圧が高くなっても、第２洗剤弁が閉弁状態に維持されるため、第１洗剤弁の弁体に水圧による開き方向の押圧力は作用しない。その結果、第１洗剤弁の弁体のチャタリングによる異音の発生を防止することができる。 Therefore, in the present invention, it is desirable to arrange the second detergent valve on the downstream side in the detergent flow direction with respect to the first detergent valve. According to this, even if the internal pressure of the venturi portion becomes high, the second detergent valve is maintained in the closed state, so that the pressing force in the opening direction due to the water pressure does not act on the valve body of the first detergent valve. As a result, it is possible to prevent the generation of abnormal noise due to chattering of the valve body of the first detergent valve.

本発明の実施形態の洗浄液生成装置及び浴槽洗浄装置の構成を示す説明図。The explanatory view which shows the structure of the cleaning liquid generator and the bathtub cleaning apparatus of embodiment of this invention.

図１を参照して、本発明の実施形態の浴槽洗浄装置は、水に洗剤を混合して洗浄液を生成する洗浄液生成装置１と、洗浄液生成装置１で生成された洗浄液を浴槽２内に噴射する洗浄ノズル３とを備えている。 With reference to FIG. 1, in the bathtub cleaning device of the embodiment of the present invention, a cleaning liquid generating device 1 that mixes a detergent with water to generate a cleaning liquid and a cleaning liquid generated by the cleaning liquid generating device 1 are injected into the bathtub 2. It is provided with a cleaning nozzle 3 for cleaning.

洗浄液生成装置１は、下流端に洗浄ノズル３が接続された、水（水道管からの冷水又は給湯器からの温水）が流れる第１流路４と、第１流路４の途中に設けられた、流路断面積が最小となるベンチュリー部４１と、ベンチュリー部４１の周壁部４１ａに開設された吸込み口４２と、液状洗剤を貯留する洗剤タンク５と、下流端が吸込み口４２に接続された、洗剤タンク５からの洗剤が流れる第２流路６とを備えている。そして、第１流路４内の水流によりベンチュリー部４１において発生する負圧で吸込み口４２から洗剤を吸引し、水に洗剤を混合して洗浄液を生成する。 The cleaning liquid generator 1 is provided in the middle of the first flow path 4 and the first flow path 4 through which water (cold water from a water pipe or hot water from a water heater) flows, to which a cleaning nozzle 3 is connected to the downstream end. Further, the venturi portion 41 having the smallest flow path cross-sectional area, the suction port 42 provided in the peripheral wall portion 41a of the venturi portion 41, the detergent tank 5 for storing the liquid detergent, and the downstream end are connected to the suction port 42. It also has a second flow path 6 through which the detergent from the detergent tank 5 flows. Then, the detergent is sucked from the suction port 42 by the negative pressure generated in the Venturi portion 41 by the water flow in the first flow path 4, and the detergent is mixed with the water to generate a cleaning liquid.

尚、洗剤タンク５は、浴室内の適所、例えば、浴槽２の上端周縁のフランジ部２１の下に配置されている。洗剤タンク５の上端には、フランジ部２１上面に露出する、常時はキャップ（図示省略）で閉塞される洗剤補給口５１が設けられている。また、浴槽２の底面には、排水路２２が接続されており、排水路２２に介設した排水弁２３を開弁することで浴槽２からの排水が行われる。 The detergent tank 5 is arranged at an appropriate place in the bathroom, for example, under the flange portion 21 on the upper peripheral edge of the bathtub 2. At the upper end of the detergent tank 5, a detergent supply port 51 that is exposed on the upper surface of the flange portion 21 and is normally closed by a cap (not shown) is provided. Further, a drainage channel 22 is connected to the bottom surface of the bathtub 2, and drainage from the bathtub 2 is performed by opening the drainage valve 23 interposed in the drainage channel 22.

第１流路４には、ベンチュリー部４１の上流側に位置させて、流量調節弁７と開閉弁８が介設されている。また、第２流路６には、第２流路６を開通、遮断する弁装置が介設されている。そして、第２流路６を開通した状態で開閉弁８を開弁させて第１流路４に通水することにより、上記の如く洗浄液を生成して、この洗浄液を洗浄ノズル３から噴射する洗浄運転と、第２流路６を遮断した状態で第１流路４に通水することにより、洗浄ノズル３から水を噴射するすすぎ運転とを行うことができるようにしている。 A flow rate control valve 7 and an on-off valve 8 are interposed in the first flow path 4 so as to be located on the upstream side of the venturi portion 41. Further, a valve device for opening and shutting off the second flow path 6 is provided in the second flow path 6. Then, the on-off valve 8 is opened with the second flow path 6 opened and water is passed through the first flow path 4, so that a cleaning liquid is generated as described above and the cleaning liquid is injected from the cleaning nozzle 3. The cleaning operation and the rinsing operation of injecting water from the cleaning nozzle 3 can be performed by passing water through the first flow path 4 with the second flow path 6 blocked.

また、本実施形態では、上記弁装置を、直列に接続された第１洗剤弁９１と第２洗剤弁９２とで構成している。第１と第２の各洗剤弁９１，９２は、弁室９１と、弁室９１内に弁室９１の端部の弁座９２に接離自在に設けられた弁体９３と、弁体９３を弁座９２に着座する閉じ方向に付勢する弁バネ９４と、弁体９３を弁バネ９４に抗して開き方向に移動させる電磁ソレノイド９５とを有する電磁弁で構成されている。電磁ソレノイド９５は、コイル９５１と、コイル９５１内のガイドスリーブ９５２に摺動自在に内挿されたプランジャ９５３とで構成され、このプランジャ９５３の軸方向先端に弁体９３が取り付けられている。また、ガイドスリーブ９５２の軸方向尾端部に設けたバネ室９５２ａに弁バネ９４を収納して、弁バネ９４によりプランジャ９５３を介して弁体９３を閉じ方向に付勢するようにしている。そして、コイル９５１を通電励磁することで、プランジャ９５３が弁バネ９４に抗して軸方向尾端側に吸引され、弁体９３が開き方向に移動するようにしている。尚、第１と第２の各洗剤弁９１，９２のバネ室９５２ａは、プランジャ９５３の摺動クリアランスを介して弁室９１に連通しており、バネ室９５２ａの内圧が弁室９１の内圧と等圧に維持される。そのため、バネ室９５２ａの内圧の影響で、弁室９１の内圧が正圧ときはプランジャ９５３を介して弁体９３が閉じ方向に押圧され、弁室９１の内圧が負圧のときはプランジャ９５３を介して弁体９３が開き方向に吸引される。 Further, in this embodiment, it is constituted by the valve device, the first detergent valve 9 1 connected in series and the second detergent valve 9 2. First and second respective detergent valve 9 1, 9 2, the valve chamber 91, a valve body 93 provided to be freely separable to the valve seat 92 of the end portion of the valve chamber 91 the valve chamber 91, the valve It is composed of a solenoid valve having a valve spring 94 that urges the body 93 to sit on the valve seat 92 in the closing direction and an electromagnetic solenoid 95 that moves the valve body 93 in the opening direction against the valve spring 94. The electromagnetic solenoid 95 is composed of a coil 951 and a plunger 953 slidably inserted in a guide sleeve 952 in the coil 951, and a valve body 93 is attached to the axial tip of the plunger 953. Further, the valve spring 94 is housed in the spring chamber 952a provided at the axial tail end of the guide sleeve 952, and the valve spring 94 urges the valve body 93 in the closing direction via the plunger 953. Then, by energizing and exciting the coil 951, the plunger 953 is attracted to the tail end side in the axial direction against the valve spring 94 so that the valve body 93 moves in the opening direction. The first and second respective detergent valves 9 1, 9 2 spring chamber 952a communicates with the valve chamber 91 through the sliding clearance of the plunger 953, the internal pressure of the spring chamber 952a is a valve chamber 91 It is maintained at the same pressure as the internal pressure. Therefore, due to the influence of the internal pressure of the spring chamber 952a, when the internal pressure of the valve chamber 91 is positive, the valve body 93 is pressed in the closing direction via the plunger 953, and when the internal pressure of the valve chamber 91 is negative pressure, the plunger 953 is pressed. The valve body 93 is sucked in the opening direction through the valve body 93.

ここで、第１洗剤弁９１は、弁座９２に形成する弁孔９２ａに対し弁室９１が洗剤の流れ方向上流側に位置し、一方、第２洗剤弁９２は、弁座９２に形成する弁孔９２ａに対し弁室９１が洗剤の流れ方向下流側に位置している。また、第２洗剤弁９２を第１洗剤弁９１に対し洗剤の流れ方向上流側に配置することも可能であるが、本実施形態では、第２洗剤弁９２を第１洗剤弁９１に対し洗剤の流れ方向下流側に配置している。具体的に説明すれば、第１洗剤弁９１の弁室９１に、洗剤タンク５に連なる第２流路６の上流側部分を接続すると共に、第２洗剤弁９２の弁室９１に、吸込み口４２に連なる第２流路６の下流側部分を接続し、更に、第１洗剤弁９１の弁孔９２ａと第２洗剤弁９２の弁孔９２ａとを互いに接続している。 Here, the first detergent valve 9 1, the valve chamber 91 to the valve hole 92a to form the valve seat 92 is positioned in the flow direction upstream of the detergent, while the second detergent valve 9 2, the valve seat 92 The valve chamber 91 is located on the downstream side in the detergent flow direction with respect to the valve hole 92a to be formed. It is also possible that the second detergent valve 9 2 relative to the first detergent valve 9 1 arranged in the flow direction upstream of the detergent, in the present embodiment, the second detergent valve 9 2 a first detergent valve 9 It is arranged on the downstream side in the flow direction of the detergent with respect to 1. In detail, the first detergent valve 9 1 of the valve chamber 91, the connecting upstream portion of the second flow passage 6 communicating with the detergent tank 5, the second detergent valve 9 second valve chamber 91, connect the downstream portion of the second flow passage 6 communicating with the suction port 42, and further, connected to the first valve hole 92a of the detergent valve 9 1 and the second valve hole 92a of the detergent valve 9 2 together.

以上の構成によれば、すすぎ運転時に、第１流路４のベンチュリー部４１下流側の部分（洗浄ノズル３を含む）での詰まりによりベンチュリー部４１の内圧が高くなっても、第２洗剤弁９２は、ベンチュリー部４１から吸込み口４２を介して弁室９１に作用する水圧で弁体９３が閉じ方向に押圧されて閉弁状態に維持され、洗剤タンク５への水の逆流を防止することができる。そして、洗剤タンク５への水の逆流を防止できることから、洗剤が薄められることや、更には、浴室内等の洗剤タンク５設置場所に洗剤が溢れ出る被害を防止できる。尚、通常は、通水時にベンチュリー部４１で負圧が発生し、第２洗剤弁９２の弁室９１の内圧も負圧になる。そして、第２洗剤弁９２の弁体９３が開き方向に吸引されて第２洗剤弁９２が仮に開弁しても、第１洗剤弁９１は閉弁状態に維持されるため、第２流路６が不用意に開通することはない。 According to the above configuration, even if the internal pressure of the venturi portion 41 increases due to clogging in the portion (including the cleaning nozzle 3) downstream of the venturi portion 41 of the first flow path 4 during the rinsing operation, the second detergent valve 9 2, the valve body 93 by the water pressure acting on the valve chamber 91 through the suction port 42 from the venturi section 41 is pressed in the closing direction is maintained in a closed state, to prevent backflow of water into the detergent tank 5 be able to. Since it is possible to prevent the backflow of water into the detergent tank 5, it is possible to prevent the detergent from being diluted and further, prevent the detergent from overflowing to the place where the detergent tank 5 is installed, such as in the bathroom. Incidentally, normally, a negative pressure is generated in the venturi section 41 at the time of passing water, the internal pressure of the second detergent valve 9 second valve chamber 91 becomes a negative pressure. Then, because even second detergent valve 9 2 is attracted toward the second valve body 93 of the detergent valve 9 2 is opened is temporarily opened, the first detergent valve 9 1 is kept in a closed state, the 2 The flow path 6 does not open inadvertently.

また、本実施形態では、第２流路６を開通させる際は、第１洗剤弁９１を開弁させた後に、第２洗剤弁９２を開弁させ、即ち、第１洗剤弁９１を第２洗剤弁９２に先行して開弁させるようにしている。ここで、本実施形態の如く第２洗剤弁９２が第１洗剤弁９１に対し洗剤の流れ方向下流側に配置されている場合、第１洗剤弁９１を第２洗剤弁９２に先行して開弁させれば、第１洗剤弁９１の開弁時には、第１洗剤弁９１の弁孔９２ａと吸込み口４２との連通が閉弁状態の第２洗剤弁９２で遮断されるため、ベンチュリー部４１で発生する負圧が第１洗剤弁９１の弁孔９２ａを介して第１洗剤弁９１の弁体９３に閉じ方向への吸引力として作用せず、更に、第２洗剤弁９２の開弁時には、第２洗剤弁９２の弁体９３に、ベンチュリー部４１で発生する負圧による開き方向への吸引力が作用すると共に、第２洗剤弁９２の弁孔９２ａに洗剤のヘッド圧が開弁状態の第１洗剤弁９１を介して導入されて、第２洗剤弁９２の弁体９３に洗剤のヘッド圧による開き方向への押圧力が作用し、第１と第２の各洗剤弁９１，９２をスムーズに開弁動作させることができる。 Further, in the present embodiment, when to open the second flow path 6, the after opening the first detergent valve 9 1, is opened a second detergent valve 9 2, i.e., the first detergent valve 9 1 the prior to second detergent valve 9 2 are so as to open. Here, if the second detergent valve 9 2 as in this embodiment relative to the first detergent valve 9 1 is arranged in the flow direction downstream of the detergent, the first detergent valve 9 1 second detergent valve 9 2 if ask prior to being opened, at the time of first opening the detergent valve 9 1, communication is cut off by the second detergent valve 9 2 in the valve closing state between the inlet 42 and the first detergent valve 9 1 of the valve hole 92a because it is not acting as a suction force in the closing direction to the first detergent valve 9 1 of the valve body 93 the negative pressure generated by the venturi section 41 through the first detergent valve 9 1 of the valve hole 92a, further, during the second opening of the detergent valve 9 2, the second valve body 93 of the detergent valve 9 2, the acts attraction forces toward the opening direction by the negative pressure generated by the venturi section 41, of the second detergent valve 9 2 head pressure of detergent valve hole 92a is introduced through the first detergent valve 9 1 open state, the pressing force acting in the opening direction to the second valve body 93 of the detergent valve 9 2 by the head pressure of the detergent and it may be opening operation the first and second of each detergent valve 9 1, 9 2 smoothly.

また、第２洗剤弁９２が第１洗剤弁９１に対し洗剤の流れ方向上流側に配置されている場合でも、第１洗剤弁９１を第２洗剤弁９２に先行して開弁させれば、第１洗剤弁９１の開弁時には、第１洗剤弁９１の弁室９１と洗剤タンク５との連通が閉弁状態の第２洗剤弁９２により遮断されるため、第１洗剤弁９１の弁体９３に洗剤のヘッド圧による閉じ方向への押圧力が作用せず、更に、第２洗剤弁９２の開弁時には、第２洗剤弁９２の弁室９１にベンチュリー部４１で発生する負圧が開弁状態の第１洗剤弁９１を介して導入されて、第２洗剤弁９２の弁体９３に負圧による開き方向への吸引力が作用すると共に、洗剤のヘッド圧による開き方向への押圧力が作用し、第１と第２の各洗剤弁９１，９２をスムーズに開弁動作させることができる。 Further, even if the second detergent valve 9 2 relative to the first detergent valve 9 1 is arranged in the flow direction upstream of the detergent, the first detergent valve 9 1 prior to the second detergent valve 9 2 opening if brought into, since at the time of first opening the detergent valve 9 1, communication between the first detergent valve 9 first valve chamber 91 and the detergent tank 5 is blocked by the second detergent valve 9 2 closed, the 1 detergent valve 9 1 of the valve body 93 without pressing force acting in the closing direction by the head pressure of the detergent, further, at the time of the second detergent valve 9 2 opening, the second detergent valve 9 second valve chamber 91 negative pressure is introduced through the first detergent valve 9 primary opening condition occurring in the venturi section 41, together with the attraction forces toward the opening direction by the negative pressure in the second valve body 93 of the detergent valve 9 2 acts it can pressing force to the opening direction by the head pressure of the detergent acts, thereby opening operation the first and second of each detergent valve 9 1, 9 2 smoothly.

ところで、第２流路６を遮断する際に、第１洗剤弁９１を第２洗剤弁９２に先行して閉弁させると、第１洗剤弁９１の弁孔９２ａにベンチュリー部４１で発生する負圧が導入されると共に、第１洗剤弁９１の弁室９１に洗剤のヘッド圧が導入された状態で第１洗剤弁９１が閉弁されることになる。そのため、第１洗剤弁９１の閉弁時に、第１洗剤弁９１の弁体９３に負圧による弁座９２側への吸引力及び洗剤のヘッド圧による弁座９２側への押圧力が作用して、第１洗剤弁９１の弁体９３が弁座９２に勢いよく衝突し、弁体９３や弁座９２の摩耗を生ずる。 However, when blocking the second passage 6, the prior to thereby close the first detergent valve 9 1 to a second detergent valve 9 2, at venturi section 41 to the first detergent valve 9 1 of the valve hole 92a with a negative pressure generated is introduced, so that the first detergent valve 9 1 while the head pressure of the detergent is introduced into the first detergent valve 9 first valve chamber 91 is closed. Therefore, when the first closing of the detergent valve 9 1, the pressing force of the valve seat 92 side by the suction force and the head pressure of the detergent to the valve seat 92 side by the negative pressure in the first detergent valve 9 1 of the valve body 93 acts, the first detergent valve 9 1 of the valve body 93 collides vigorously the valve seat 92, resulting in wear of the valve element 93 and valve seat 92.

そこで、本実施形態では、第２流路６を遮断する際は、第２洗剤弁９２を閉弁させた後に、第１洗剤弁９１を閉弁させるようにしている。ここで、本実施形態の如く第２洗剤弁９２が第１洗剤弁９１に対し洗剤の流れ方向下流側に配置されている場合、第２洗剤弁９２を第１洗剤弁９１に先行して閉弁させれば、第１洗剤弁９１の閉弁時には、第１洗剤弁９１の弁孔９２ａへのベンチュリー部４１で発生する負圧の導入が閉弁状態の第２洗剤弁９２により阻止される。そのため、第１洗剤弁９１の閉弁時に、第１洗剤弁９１の弁体９３に負圧による弁座９２側への吸引力が作用せず、第１洗剤弁９１の弁体９３が弁座９２に勢いよく衝突することを防止できる。また、第２洗剤弁９２が第１洗剤弁９１に対し洗剤の流れ方向上流側に配置されている場合でも、第２洗剤弁９２を第１洗剤弁９１に先行して閉弁させれば、第１洗剤弁９１の閉弁時には、第１洗剤弁９１の弁室９１と洗剤タンク５との連通が閉弁状態の第２洗剤弁９２により遮断される。そのため、第１洗剤弁９１の閉弁時に、第１洗剤弁９１の弁体９３に洗剤のヘッド圧による弁座９２側への押圧力が作用せず、第１洗剤弁９１の弁体９３が弁座９２に勢いよく衝突することを防止できる。 Therefore, in the present embodiment, when blocking the second flow path 6, after allowed to close the second detergent valve 9 2, and a first detergent valve 9 1 so as to close. Here, if the second detergent valve 9 2 as in this embodiment relative to the first detergent valve 9 1 is arranged in the flow direction downstream of the detergent, the second detergent valve 9 2 first detergent valve 9 to 1 if ask prior to being closed, at the time of the first closing of the detergent valve 9 1, second detergent introduction of negative pressure closed state generated in the venturi section 41 of the first detergent valve 9 1 of the valve hole 92a It is blocked by the valve 9 2. Therefore, when the first closing of the detergent valve 9 1, without the suction force acting on the valve seat 92 side by the negative pressure in the first detergent valve 9 1 of the valve body 93, the first detergent valve 9 1 of the valve body 93 Can be prevented from colliding with the valve seat 92 vigorously. Further, even if the second detergent valve 9 2 relative to the first detergent valve 9 1 is arranged in the flow direction upstream of the detergent, the second detergent valve 9 2 prior to the first detergent valve 9 1 closed if brought into, at the first closing of the detergent valve 9 1, communication between the first detergent valve 9 first valve chamber 91 and the detergent tank 5 is blocked by the second detergent valve 9 2 closed. Therefore, when the first closing of the detergent valve 9 1, the pressing force of the valve seat 92 side by the head pressure of the detergent in the first cleaning valve 9 1 of the valve body 93 does not act, the first detergent valve 9 first valve It is possible to prevent the body 93 from vigorously colliding with the valve seat 92.

従って、第２流路６を遮断する際に、第２洗剤弁９２を第１洗剤弁９１に先行して閉弁させれば、第２洗剤弁９２が第１洗剤弁９１に対し洗剤の流れ方向下流側に配置されている場合と第２洗剤弁９２が第１洗剤弁９１に対し洗剤の流れ方向上流側に配置されている場合との何れにおいても、第１洗剤弁９１の弁体９３が閉弁時に弁座９２に勢いよく衝突して、弁体９３及び弁座９２の摩耗を生ずることを抑制でき、耐久性が向上する。 Therefore, when blocking the second flow path 6, the second detergent valve 9 2 if ask leading to closed to the first detergent valve 9 1, second detergent valve 9 2 is first detergent valve 9 to 1 in any case arranged in the flow direction downstream side of the detergent and the second detergent valve 9 2 against is the case where for the first detergent valve 9 1 is arranged in the flow direction upstream of the detergent, the first detergent the valve body 93 of the valve 9 1 collides vigorously in seat 92 when the valve is closed, can be suppressed resulting wear of the valve body 93 and valve seat 92, thereby improving the durability.

但し、第２洗剤弁９２が第１洗剤弁９１に対し洗剤の流れ方向上流側に配置されている場合には、第１流路４のベンチュリー部４１の下流側部分での詰まりを生じて、ベンチュリー部４１の内圧が高くなると、第１洗剤弁９１の弁体９３がベンチュリー部４１から吸込み口４２を介して第１洗剤弁９１の弁孔９２ａに導入される水圧で開き方向に押圧される。そして、第１洗剤弁９１の弁体９３が一旦開き方向に動作すると、以後、第１洗剤弁９１の弁孔９２ａの水圧が低下して、弁体９３が弁バネ９４の付勢力で閉じ方向に動作することと、第１洗剤弁９１の閉弁で弁孔９２ａの水圧が再度上昇して、弁体９３が開き方向に動作することとを繰り返し、チャタリングによる異音が発生する。 However, when the second detergent valve 9 2 relative to the first detergent valve 9 1 is arranged in the flow direction upstream of detergent clogged on the downstream portion of the venturi section 41 of the first flow path 4 Te, when the internal pressure of the venturi section 41 is increased, the opening direction by the pressure which the first detergent valve 9 1 of the valve body 93 is introduced into the first detergent valve 9 1 of the valve hole 92a through the suction port 42 from the venturi section 41 Is pressed against. When the first detergent valve 9 1 of the valve body 93 is operated in the opening direction once, thereafter, water pressure of the first detergent valve 9 1 of the valve hole 92a is reduced, the valve body 93 by the urging force of the valve spring 94 and it works in the closing direction, the pressure of the valve hole 92a in the first detergent valve 9 primary closing is increased again, repeating the operate direction valve 93 is opened, abnormal noise due to chattering ..

一方、本実施形態の如く、第２洗剤弁９２を第１洗剤弁９１に対し洗剤の流れ方向下流側に配置すれば、ベンチュリー部４１の内圧が高くなっても、第２洗剤弁９２が閉弁状態に維持されるため、第１洗剤弁９１の弁孔９２ａにベンチュリー部４１からの水圧は導入されない。その結果、第１洗剤弁９１の弁体９３のチャタリングによる異音の発生を防止することができる。 On the other hand, as in this embodiment, by arranging the second detergent valve 9 2 relative to the first detergent valve 9 1 in the flow direction downstream of the detergent, even when high pressure of the venturi section 41, a second detergent valve 9 because 2 is kept in a closed state, the water pressure from the venturi section 41 to the first detergent valve 9 1 of the valve hole 92a is not introduced. As a result, it is possible to prevent the occurrence of abnormal noise due to chattering of the first detergent valve 9 1 of the valve body 93.

以上、本発明の実施形態について図面を参照して説明したが、本発明はこれに限定されない。例えば、上記実施形態では、浴槽洗浄装置で使用する洗浄液生成装置に本発明を適用しているが、浴槽洗浄装置以外の他の洗浄装置で用いる洗浄液生成装置にも同様に本発明を適用できる。 Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited thereto. For example, in the above embodiment, the present invention is applied to the cleaning liquid generating device used in the bathtub cleaning device, but the present invention can be similarly applied to the cleaning liquid generating device used in other cleaning devices other than the bathtub cleaning device.

１…洗浄液生成装置、２…浴槽、３…洗浄ノズル、４…第１流路、４１…ベンチュリー部、４１ａ…周壁部、４２…吸込み口、５…洗剤タンク、６…第２流路、９１…第１洗剤弁、９２…第２洗剤弁、９１…弁室、９２…弁座、９２ａ…弁孔、９３…弁体、９４…弁バネ、９５…電磁ソレノイド。
1 ... Cleaning liquid generator, 2 ... Bathtub, 3 ... Cleaning nozzle, 4 ... First flow path, 41 ... Venturi part, 41a ... Peripheral wall part, 42 ... Suction port, 5 ... Detergent tank, 6 ... Second flow path, 9 1 ... 1st detergent valve, 9 2 ... 2nd detergent valve, 91 ... Valve chamber, 92 ... Valve seat, 92a ... Valve hole, 93 ... Valve body, 94 ... Valve spring, 95 ... Electromagnetic solenoid.

Claims (5)

水が流れる第１流路と、第１流路の途中に設けられた、流路断面積が最小となるベンチュリー部と、ベンチュリー部の周壁部に開設された吸込み口と、洗剤タンクと、下流端が吸込み口に接続された、洗剤タンクからの洗剤が流れる第２流路とを備え、第１流路内の水流によりベンチュリー部において発生する負圧で吸込み口から洗剤を吸引し、水に洗剤を混合して洗浄液を生成する洗浄液生成装置であって、第２流路に、第２流路を開通、遮断する弁装置を介設するものにおいて、
弁装置は、直列に接続された第１洗剤弁と第２洗剤弁とで構成され、第１と第２の各洗剤弁は、弁室と、弁室内に弁室の端部の弁座に接離自在に設けられた弁体と、弁体を弁座に着座する閉じ方向に付勢する弁バネと、弁体を弁バネに抗して開き方向に移動させる電磁ソレノイドとを有する電磁弁であって、第１洗剤弁は、弁座に形成する弁孔に対し弁室が洗剤の流れ方向上流側に位置し、第２洗剤弁は、弁座に形成する弁孔に対し弁室が洗剤の流れ方向下流側に位置することを特徴とする洗浄液生成装置。 A first flow path through which water flows, a venturi portion provided in the middle of the first flow path that minimizes the cross-sectional area of the flow path, a suction port provided on the peripheral wall of the venturi portion, a detergent tank, and downstream. It is equipped with a second flow path through which the detergent from the detergent tank flows, with the end connected to the suction port, and the detergent is sucked from the suction port with the negative pressure generated in the Venturi part by the water flow in the first flow path, and becomes water. In a cleaning liquid generating device that mixes detergents to generate a cleaning liquid, in which a valve device that opens and shuts off the second flow path is provided in the second flow path.
The valve device is composed of a first detergent valve and a second detergent valve connected in series, and the first and second detergent valves are attached to the valve chamber and the valve seat at the end of the valve chamber in the valve chamber. An electromagnetic valve having a valve body provided in a detachable manner, a valve spring that urges the valve body to sit on the valve seat in the closing direction, and an electromagnetic solenoid that moves the valve body in the opening direction against the valve spring. In the first detergent valve, the valve chamber is located upstream of the valve hole formed in the valve seat in the detergent flow direction, and in the second detergent valve, the valve chamber is located in the valve hole formed in the valve seat. A cleaning liquid generator characterized by being located on the downstream side in the detergent flow direction. 第２流路を開通させる際は、第１洗剤弁を開弁させた後に、第２洗剤弁を開弁させることを特徴とする請求項１記載の洗浄液生成装置。 The cleaning liquid generating apparatus according to claim 1, wherein when the second flow path is opened, the first detergent valve is opened and then the second detergent valve is opened. 第２流路を遮断する際は、第２洗剤弁を閉弁させた後に、第１洗剤弁を閉弁させることを特徴とする請求項１又は２記載の洗浄液生成装置。 The cleaning liquid generating apparatus according to claim 1 or 2, wherein when the second flow path is shut off, the second detergent valve is closed and then the first detergent valve is closed. 第２洗剤弁は、第１洗剤弁に対し洗剤の流れ方向下流側に配置されることを特徴とする請求項１〜３の何れか１項記載の洗浄液生成装置。 The cleaning liquid generating device according to any one of claims 1 to 3, wherein the second detergent valve is arranged on the downstream side in the flow direction of the detergent with respect to the first detergent valve. 洗浄液生成装置で生成された洗浄液を浴槽内に噴射する洗浄ノズルを備える浴槽洗浄装置であって、洗浄液生成器として請求項１〜４の何れか１項記載のものを用いることを特徴とする浴槽洗浄装置。
A bathtub cleaning device including a cleaning nozzle for injecting a cleaning liquid generated by the cleaning liquid generator into a bathtub, wherein the cleaning liquid generator according to any one of claims 1 to 4 is used. Cleaning equipment.
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JP3207459B2 (en) * 1991-07-23 2001-09-10 株式会社ガスター Detergent charging device for bathtub cleaning device and method of detecting detergent charging operation state in the device
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JP2007117163A (en) * 2005-10-25 2007-05-17 Noritz Corp Bathtub washing method by bathtub washing device
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