JP4674388B2

JP4674388B2 - Clean water shower

Info

Publication number: JP4674388B2
Application number: JP2000060084A
Authority: JP
Inventors: 圭悟金谷; 康男米澤
Original assignee: Toray Industries Inc
Current assignee: Toray Industries Inc
Priority date: 2000-03-06
Filing date: 2000-03-06
Publication date: 2011-04-20
Anticipated expiration: 2020-03-06
Also published as: JP2001245811A

Description

【０００１】
【発明の属する技術分野】
本発明は、シャワー水栓などに備えられ、主に水道水中の残留塩素を除去または分解することのできる浄水シャワーに関し、特に原水と浄水を切り替える手段を有する浄水シャワーに関する。
【０００２】
【従来の技術】
従来、水道水中の残留塩素を除去または分解する浄水シャワーで、原水と浄水を切り替える手段を有するものにおいては、たとえば図３にシャワーヘッド１０１とシャワーグリップ１０２を備えた浄水シャワー１００を示すように、原水は、切替器１０３に導入され、流路中にろ材１０４を有する浄水流路と、ろ材を迂回する原水流路とに振り分けられ、ヘッド部に案内され、シャワーとして放出される。このように従来の浄水シャワーは流路の切替手段１０３がろ材１０４よりも上流側に配置されているため、使用者が流路切替を行うためには、図４に示すように両手を必要とした。
【０００３】
また、従来の浄水シャワー１００は、ろ材１０４を筒状にし、この筒状のろ材１０４の側面から原水を流入させることで、ろ材１０４への流入断面積を大きくし、流路抵抗を軽減している。
【０００４】
筒状ろ材１０４を有し、原水流路と浄水流路とを切り替える手段１０３を有する浄水シャワー１００は、原水を切替器１０３に導入したあとに、切替器１０３により筒状ろ材１０４の外周側と内周側に振り分け、内周側を原水流路、外周側を浄水流路とし、原水が内周側に案内された時は、そのままろ材１０４の内周を通過して、シャワーヘッド１０１に導入され、シャワーとして吐出され、原水がろ材１０４の外周へ案内された時は、ろ材１０４の外周から、ろ材１０４を通過してろ材１０４の内周へ流出してシャワーヘッド１０１に導入され、浄水のシャワーとして吐出される。
【０００５】
このように、従来の浄水シャワーでは、浄水流路はろ材１０４の外周から内周に向かって流れるように構成されているため、ろ材１０４には、中心方向に圧力が作用するので、ろ材１０４の中心に、多孔質プラスチックや、側面に多数の穴が設けられているプラスチックの円筒などからなる、ろ材の補強材１０５が必要であった。
【０００６】
すなわち、従来の浄水シャワー１００では、浄水流路と原水流路とを切り替える手段１０３がろ材１０４よりも上流側に配されており、かつ、円筒ろ材１０４の中心に補強材１０５が必要であったために、使用者がシャワー使用時に流路を切り替える場合には、図４のように両手を使って切り替えなければならず、また、補強材１０５が入っている分大きい、もしくは、浄水能力が低い浄水シャワーであった。
【０００７】
【発明が解決しようとする課題】
本発明の課題は、原水流路と浄水流路を切り替える手段を有する浄水シャワーであって、片手で切り替え動作を行うことができ、ろ材に水圧が作用しても十分にろ材形状を維持することができるとともに、ろ材を全体にわたって効率よく消費し、浄水シャワー内の空間を効率的に使用する浄水シャワーを提供することにある。
【０００８】
【課題を解決するための手段】
上記課題を解決するために、本発明の浄水シャワーは、筒状のろ材と、前記ろ材の内周側を通る原水流路と、前記ろ材の外周側を通り前記ろ材の下流側が常時開放されている浄水流路と、前記原水流路内であって前記ろ材よりも下流側に設けられている前記原水流路を開閉する手段とを有し、かつ、前記原水流路を開閉する手段が閉じているときには前記原水流路内を流れる原水が前記ろ材の内側から外側に向かって流れ、前記原水流路を開閉する手段が開いているときには前記原水流路内を流れる原水が前記ろ材の内周側を流れることを特徴とするものからなる。
【００１１】
また、ろ材は亜硫酸塩や活性炭を用いて構成されていることが好ましく、亜硫酸塩としては亜硫酸カルシウム、活性炭としては繊維状活性炭を用いることが望ましい。
【００１２】
ろ材はハウジング内に設けられるが、ろ材を内包するハウジングの一部または全体が、透明であってもよい。
【００１３】
また、通水性の補強部材がろ材の外周に配置していることが好ましく、より好ましくは通水性の補強部材が、不織布であることが望ましく、さらに好ましくは、このような通水性の補強部材がろ材の外周に積層配置されていることが望ましい。また、通水性の補強部材の圧力損失がろ材の圧力損失よりも大きいことが好ましい。
【００１４】
また、ろ材の流入側の通水抵抗、つまり、ろ材の内周側の通水抵抗よりも、流出側の通水抵抗、つまり、ろ材の外周側の通水抵抗の方が大きいことが好ましい。
【００１５】
本発明の浄水シャワーにおいては、ろ材を筒状として、原水を浄水時、原水時のいずれの場合も筒状ろ材の内周側に導入し、原水流路の出口を流入口と反対側のろ材内周に、浄水流路の出口をろ材の外周に設けることで、浄水流路に導入された原水がろ材の内周側から外周側に向かって流れるようにし、ろ材に作用する圧力としては内圧を支配的にし、ろ材の外周に通水性の補強部材を配置することで、ろ材に作用する内圧を通水性の補強部材で保持できるため、従来必要であった筒状ろ材内部の補強材が不要になる。通水性の補強部材に薄くて丈夫な不織布等を用いることによって、通水性の補強部材の占める容積を従来の補強材が占めていた容積よりも小さくすることができ、その分小型化もしくは、ろ材の増量が可能となり、従来よりも小型、高能力となる。
【００１６】
また、原水流路を開閉する手段をろ材よりも下流側に設けることにより、原水流路を閉じている時は、開いている流路は浄水流路のみとなり、原水流路が開いている時は、原水流路も開いているが、浄水流路にはろ材が存在する分の圧力損失があるため、原水は選択的に原水流路を流れ、原水流路を開閉する手段によって、原水と浄水を選択して吐出することができる。すなわち、使用者がシャワー本体を持っている手の指の位置に切替器を設けることができるので、使用者が片手で原水と浄水とを切り替えることができるようになる。
【００１７】
また、ろ材外周に通水性の補強部材を適当量積層に配置することで、適当量の圧力損失を通水性の補強部材で発生させ、通水性の補強部材の圧力損失をろ材の圧力損失よりも大きくすることにより、ろ材中を通過する原水の流れを均一化し、ろ材を効率的に消費することができる。
【００１８】
さらに、本発明に係る浄水シャワーにおいては、ろ材充填部のハウジングの一部または全体を透明とすることにより、ハウジング内の流れや、汚れ等を視認できるようにすることもできる。
【００１９】
【発明の実施の形態】
以下に、本発明に係る浄水シャワーの望ましい実施の形態について、図面を参照しながら説明する。
本発明の浄水シャワーは、浄水流路と原水流路を片手で切り替えることができ、ろ材に水圧が作用しても十分にろ材形状を維持することができ、かつ、ろ材を全体にわたって効率よく消費できるとともに、浄水シャワー内の空間を効率的に使用する浄水シャワーとして好適に用いることができる。
【００２０】
図１は、本発明の一実施態様に係る浄水シャワー１を示している。図１において、浄水シャワー１は、シャワーヘッド２と、シャワーグリップ３と、切替弁４と、カートリッジ５を有している。カートリッジ５は、図２に示すように、円筒形状のろ材６と、ろ材キャップ７ａ、７ｂと、通水性の補強部材８ａ、８ｂとからなる。ろ材外周側の補強部材８ｂは、後述の如くろ材の補強機能、所望の圧力損失発生機能を有することが好ましいが、内周側の補強部材８ａは、単にろ材の形態保持機能を有するものであってもよい。ろ材６を収容したハウジングとしてのシャワーグリップ３とシャワーヘッド２の一部とは、そのハウジングの一部または全部が透明であってもよい。透明構造としておくことで、ろ材の詰まり具合や寿命を外部から視認できるようになる。
【００２１】
切替弁４の構造は、止水弁であり、原水流路ａ（図１に一点鎖線矢印で示す。）にのみ設けてある。ろ材６は、本実施態様では、繊維状活性炭を円筒状に成形したものを使用しており、ろ材６の内周には通水性の補強部材８ａとして不織布を１重巻きに配置し、ろ材の外周には、通水性の補強部材８ｂとして不織布を３重巻きに積層配置している。
【００２２】
外周の通水性補強部材８ｂは、外周の通水性部材部分の圧力損失が、ろ材６の圧力損失よりも大きく、カートリッジ５に水道水圧が作用しても、通水性補強部材８ｂが損失せず、かつ、ろ材６の流出を防止し得るものであればよい。
【００２３】
原水流路ａは、シャワーグリップ３に設けられている流入口９から始まり、ろ材キャップ７ａの内側からろ材６の内周側に入り、ろ材キャップ７ｂの内側、切替弁４を通り、シャワーヘッド２へ導入され、外部へと通じる。
【００２４】
浄水流路ｂ（図１に実線矢印で示す。）は、シャワーグリップ３に設けられている流入口９から始まり、ろ材キャップ７ａの内側からろ材６の内周側へ入り、ろ材６を通過してろ材６の外周側へ出たあと、シャワーヘッド２へ導入され、外部へと通じる。
【００２５】
切替弁４部分は、カートリッジ５よりも下流側に配置されており、原水流路ａのみを開閉する機構である。
【００２６】
すなわち、切替弁４によって原水流路ａが閉鎖されている場合は、原水は浄水流路ｂのみを通水され、切替弁４によって原水流路ａが開放されている場合は、原水は浄水流路ｂよりもカートリッジ５が入っていない分圧力損失が低い原水流路ａを選択的に流れるので、切替弁４の切替によって原水流路ａと浄水流路ｂとを選択的に切り替えることができる。
【００２７】
筒状のろ材６は、本実施態様では、円筒形状の繊維状活性炭からなり、繊維状活性炭の外周および内周には不織布８ａ、８ｂが巻かれている。
【００２８】
切替弁４は、本実施態様のように、カートリッジ５の下流側に配置することが可能であるため、本発明の浄水シャワーの使用者は、浄水シャワーを持っている手の指などで容易に切替弁４を操作し流路の選択を行うことができる。しかも、切替弁４は従来の浄水に用いられている切替弁よりも部品点数が少なく、簡単な構造に構成できるので、組立性、製造コストが従来よりも安価である。
【００２９】
浄水流路ｂは、浄水流路ｂ内を流れる原水が筒状のろ材６を内側から外側に向かって通過するように形成されている。ろ材６を通過した浄水は、ろ材６の外周とシャワーグリップ３の内周との間に形成された浄水流路を通して、シャワーヘッド２内へと流れるようになっている。
【００３０】
本実施態様では、ろ材６の外周側と内周側の両方に不織布８ａ、８ｂが配されており、このうちとくに外周の不織布８ｂは、その圧力損失がろ材６の圧力損失の１．２〜１．５倍の範囲になるように巻かれている。
【００３１】
このように構成された浄水シャワー１においては、切替弁４によって原水流路ａを止水した場合、流入した原水は、ろ材６の内側に案内され、ろ材６の内側からろ材６中に流入し、ろ材６を外側に向かって通過し、ろ材６の外周側からシャワーヘッド２内へと流れ、そこから外部へ浄水シャワーとなって吐出される。
【００３２】
また、切替弁４によって原水流路ａを開放した場合、流入した原水は、ろ材６の内側に案内され、圧力損失の低いろ材６の内側を選択的にそのまま通過し、シャワーヘッド２内を通過して外部へ原水のシャワーとして吐出する。
【００３３】
したがって、浄水時、原水時、ともに原水はろ材６の内側に流入するため、いずれの場合においても、水圧はろ材の内周側に作用し、ろ材６の外周側から水圧を受けることはなくなる。すなわち、ろ材６に耐水圧性をもたせるためには、ろ材６の内側からの水圧に対してのみ考慮すればよいことになる。
【００３４】
本発明の浄水シャワーでは、ろ材６の内側から水圧が作用すると、外径方向に変形しようとするろ材６が、ろ材６の外周側に設けられた通水性の補強部材としての不織布８ｂの張力によって形態が保持されるため、ろ材６を内側から支持する強度部材が無くても、十分な耐水圧性をもつことができる。また、不織布８ｂは通水抵抗が小さくてもろ材６を支持するに十分な引張強度を有するため、従来の芯を用いた補強よりも、通水抵抗を小さくすることができる。しかも、不織布８ｂの張力によってろ材６を支持するため、不織布８ｂ自身は薄い部材でよく、その専有スペースも小さくて済む。
【００３５】
そして、ろ材６の内側から外側に向けて通水する場合、単に外側に不織布８ｂを巻いただけでは、耐水圧性が十分であっても、ろ材６中を原水が偏流し、ろ材６を局部的に非効率的に消費してしまう可能性がある。しかし本発明の浄水シャワーでは、ろ材６の外周に不織布８ｂを巻く際に、不織布８ｂの圧力損失がろ材６の圧力損失よりも大きくなるようにし、ろ材６の外周に適度な圧力損失を持たせるようにしているので、原水のろ材６内の偏流を解消でき、ろ材６中を均一に通過させて、ろ材６の消費効率の低下を防ぐことができる。
【００３６】
また、本発明の浄水シャワーでは、ろ材６自身に対し従来のような特別な補強材を設ける必要がないため、その分コストが抑えられると同時に、補強材の容積分小型化することができる。
【００３７】
なお、ろ材６の内周側に設けた不織布８ａは、主としてろ材６の形態を保持するためのものであるから、格別の考慮は不要であるが、極力低圧力損失としておことが好ましい。
【００３８】
このように、上記浄水シャワーにおいては、従来よりも通水抵抗少なく、ろ材６を特別な補強材で補強しなくても十分な耐水圧性を有し、ろ材６を全体にわたって効率よく消費することができる。そして、図１に示した如く、このような優れた性能を簡単な構造で実現できるから、本発明を安価に実施できる。
【００３９】
【発明の効果】
以上説明したように、本発明に係る浄水シャワーにおいては、片手で切り替え動作を行うことができ、切り替えの機構が簡単な構造であり、かつ、ろ材に水圧が作用しても十分にろ材形状を維持することができるとともに、ろ材を全体にわたって効率よく消費し、浄水シャワー内の空間を効率的に使用する浄水シャワーを提供できる。
【図面の簡単な説明】
【図１】本発明の一実施態様に係る浄水シャワーの断面図である。
【図２】図１のろ材の拡大断面図である。
【図３】従来の浄水シャワーの一例を示す断面図である。
【図４】図３の浄水シャワーでの切替動作の一例を示す概略斜視図である。
【符号の説明】
１浄水シャワー
２シャワーヘッド
３シャワーグリップ
４切替弁
５カートリッジ
６ろ材
７ａ、７ｂろ材キャップ
８ａ、８ｂ通水性の補強部材
９原水流入口
ａ原水流路
ｂ浄水流路[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a purified water shower provided in a shower faucet or the like and capable of mainly removing or decomposing residual chlorine in tap water, and more particularly to a purified water shower having means for switching between raw water and purified water.
[0002]
[Prior art]
Conventionally, in a purified water shower that removes or decomposes residual chlorine in tap water and has means for switching between raw water and purified water, for example, as shown in FIG. 3, a purified water shower 100 including a shower head 101 and a shower grip 102 is shown. The raw water is introduced into the switch 103 and is distributed to a purified water flow path having the filter medium 104 in the flow path and a raw water flow path that bypasses the filter medium, is guided to the head portion, and is discharged as a shower. As described above, in the conventional clean water shower, the flow path switching means 103 is arranged on the upstream side of the filter medium 104, so that the user needs both hands as shown in FIG. did.
[0003]
Moreover, the conventional water purification shower 100 makes the filter medium 104 into a cylindrical shape, and flows the raw water from the side surface of the cylindrical filter medium 104 to increase the inflow cross-sectional area to the filter medium 104 and reduce the flow resistance. Yes.
[0004]
A purified water shower 100 having a tubular filter medium 104 and having means 103 for switching between the raw water flow path and the purified water flow path is introduced into the switch 103 after the raw water is introduced into the switch 103 and the outer periphery of the tubular filter medium 104 by the switch 103. When the raw water is guided to the inner peripheral side, it passes through the inner periphery of the filter medium 104 and is introduced into the shower head 101 as it is distributed to the inner peripheral side. When the raw water is guided to the outer periphery of the filter medium 104, the raw water passes through the filter medium 104, flows out to the inner periphery of the filter medium 104, and is introduced into the shower head 101. It is discharged as a shower.
[0005]
Thus, in the conventional water purification shower, since the water purification flow path is configured to flow from the outer periphery of the filter medium 104 toward the inner periphery, pressure acts on the filter medium 104 in the center direction. In the center, a filter medium reinforcing material 105 made of a porous plastic or a plastic cylinder provided with a large number of holes on the side surface is required.
[0006]
That is, in the conventional water purification shower 100, the means 103 for switching between the water purification flow path and the raw water flow path is arranged on the upstream side of the filter medium 104, and the reinforcing material 105 is required at the center of the cylindrical filter medium 104. In addition, when the user switches the flow path when using the shower, it must be switched using both hands as shown in FIG. 4, and the water purification capacity is large or the water purification capacity is low because the reinforcing material 105 is contained. It was a shower.
[0007]
[Problems to be solved by the invention]
An object of the present invention is a water purification shower having means for switching between a raw water flow path and a water purification flow path, which can be switched with one hand, and sufficiently maintain the filter medium shape even when water pressure acts on the filter medium. It is possible to provide a clean water shower that efficiently consumes the filter medium as a whole and efficiently uses the space in the clean water shower.
[0008]
[Means for Solving the Problems]
In order to solve the above problems, the water purification shower according to the present invention has a tubular filter medium, a raw water flow path that passes through the inner peripheral side of the filter medium, and a downstream side of the filter medium that is always open through the outer peripheral side of the filter medium. And a means for opening and closing the raw water flow channel provided in the raw water flow channel and downstream of the filter medium , and the means for opening and closing the raw water flow channel is closed. and the raw water flowing through the raw water flow path when being flows from the inside to the outside of the filter material, the inner circumferential raw water flowing through the raw water flow path of the filter media when the means for opening and closing the raw water flow path is open It is characterized by flowing on the side .
[0011]
The filter medium is preferably composed of sulfite or activated carbon. It is desirable to use calcium sulfite as the sulfite and fibrous activated carbon as the activated carbon.
[0012]
Although the filter medium is provided in the housing, a part or the whole of the housing containing the filter medium may be transparent.
[0013]
Further, it is preferable that the water-permeable reinforcing member is disposed on the outer periphery of the filter medium, more preferably the water-permeable reinforcing member is a nonwoven fabric, and more preferably, such a water-permeable reinforcing member is provided. It is desirable that the filter medium is laminated on the outer periphery of the filter medium. Moreover, it is preferable that the pressure loss of the water-permeable reinforcing member is larger than the pressure loss of the filter medium.
[0014]
Moreover, it is preferable that the water flow resistance on the outflow side, that is, the water flow resistance on the outer peripheral side of the filter medium is larger than the water flow resistance on the inflow side of the filter medium, that is, the water flow resistance on the inner peripheral side of the filter medium.
[0015]
In the water purification shower of the present invention, the filter medium is cylindrical, the raw water is introduced into the inner peripheral side of the cylindrical filter medium in both cases of purified water and raw water, and the outlet of the raw water flow path is opposite to the inlet. By providing the outlet of the water purification channel on the outer periphery of the filter medium on the inner periphery, the raw water introduced into the water purification channel flows from the inner periphery side to the outer periphery side of the filter medium, and the pressure acting on the filter medium is the internal pressure. By placing a water-permeable reinforcing member on the outer periphery of the filter medium, the internal pressure acting on the filter medium can be held by the water-based reinforcing member, eliminating the need for a reinforcing material inside the cylindrical filter medium that was previously required become. By using a thin and strong non-woven fabric for the water-permeable reinforcing member, the volume occupied by the water-permeable reinforcing member can be made smaller than the volume occupied by the conventional reinforcing material. It is possible to increase the amount, and it is smaller and has higher capacity than before.
[0016]
In addition, by providing means for opening and closing the raw water flow channel downstream of the filter medium, when the raw water flow channel is closed, the open flow channel is only the purified water flow channel, and the raw water flow channel is open. Although the raw water channel is also open, there is a pressure loss due to the presence of the filter medium in the purified water channel, so the raw water selectively flows through the raw water channel, and the raw water channel is opened and closed by means of opening and closing the raw water channel. Purified water can be selected and discharged. That is, since the switch can be provided at the finger position of the hand holding the shower body, the user can switch between the raw water and the purified water with one hand.
[0017]
In addition, by arranging an appropriate amount of water-permeable reinforcing members on the outer periphery of the filter medium, an appropriate amount of pressure loss is generated by the water-based reinforcing member, so that the pressure loss of the water-permeable reinforcing member is greater than the pressure loss of the filter medium. By enlarging, the flow of raw water passing through the filter medium can be made uniform, and the filter medium can be consumed efficiently.
[0018]
Furthermore, in the water purification shower according to the present invention, by making a part or the whole of the housing of the filter medium filling portion transparent, the flow in the housing, dirt, etc. can be made visible.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of a water purification shower according to the present invention will be described with reference to the drawings.
The water purification shower of the present invention can switch between the purified water flow path and the raw water flow path with one hand, can maintain the shape of the filter medium sufficiently even when water pressure acts on the filter medium, and consumes the filter medium efficiently throughout. In addition, it can be suitably used as a purified water shower that efficiently uses the space in the purified water shower.
[0020]
FIG. 1 shows a water purification shower 1 according to an embodiment of the present invention. In FIG. 1, the clean water shower 1 has a shower head 2, a shower grip 3, a switching valve 4, and a cartridge 5. As shown in FIG. 2, the cartridge 5 includes a cylindrical filter medium 6, filter medium caps 7a and 7b, and water-permeable reinforcing members 8a and 8b. The reinforcing member 8b on the outer periphery side of the filter medium preferably has a function of reinforcing the filter medium and a desired pressure loss generating function as described later, but the inner peripheral side reinforcing member 8a simply has a function of maintaining the shape of the filter medium. May be. The shower grip 3 as a housing containing the filter medium 6 and a part of the shower head 2 may be partially or entirely transparent. By setting it as a transparent structure, it becomes possible to visually check the degree of clogging and life of the filter medium.
[0021]
The structure of the switching valve 4 is a water stop valve, and is provided only in the raw water flow path a (indicated by a one-dot chain line arrow in FIG. 1). In this embodiment, the filter medium 6 is formed by forming a fibrous activated carbon into a cylindrical shape, and a non-woven fabric is disposed as a water-permeable reinforcing member 8a on the inner periphery of the filter medium 6 in a single roll. On the outer periphery, a nonwoven fabric is laminated and arranged in a triple winding as the water-permeable reinforcing member 8b.
[0022]
In the outer peripheral water-permeable reinforcing member 8b, the pressure loss of the outer peripheral water-permeable member portion is larger than the pressure loss of the filter medium 6, and even if tap water pressure acts on the cartridge 5, the water-permeable reinforcing member 8b does not lose, And what is necessary is just to be able to prevent the outflow of the filter medium 6.
[0023]
The raw water flow path a starts from the inlet 9 provided in the shower grip 3, enters the inner peripheral side of the filter medium 6 from the inside of the filter medium cap 7 a, passes through the switching valve 4 inside the filter medium cap 7 b, and passes through the shower head 2. Is introduced to the outside.
[0024]
The purified water flow path b (shown by a solid line arrow in FIG. 1) starts from the inlet 9 provided in the shower grip 3, enters the inner peripheral side of the filter medium 6 from the inside of the filter medium cap 7 a, and passes through the filter medium 6. After coming out to the outer peripheral side of the filter medium 6, it is introduced into the shower head 2 and leads to the outside.
[0025]
The switching valve 4 portion is disposed downstream of the cartridge 5 and is a mechanism that opens and closes only the raw water flow path a.
[0026]
That is, when the raw water channel a is closed by the switching valve 4, the raw water is passed through only the purified water channel b, and when the raw water channel a is opened by the switching valve 4, the raw water is Since the flow through the raw water flow path a having a lower pressure loss than the path b is low, the raw water flow path a and the purified water flow path b can be selectively switched by switching the switching valve 4. .
[0027]
In the present embodiment, the cylindrical filter medium 6 is made of cylindrical fibrous activated carbon, and nonwoven fabrics 8a and 8b are wound around the outer and inner circumferences of the fibrous activated carbon.
[0028]
Since the switching valve 4 can be disposed on the downstream side of the cartridge 5 as in this embodiment, the user of the water purification shower of the present invention can easily use the finger of the hand holding the water purification shower. The flow path can be selected by operating the switching valve 4. In addition, since the switching valve 4 has fewer parts than the switching valve used in conventional water purification and can be configured in a simple structure, the assembling property and the manufacturing cost are lower than the conventional one.
[0029]
The purified water flow path b is formed so that the raw water flowing through the purified water flow path b passes through the tubular filter medium 6 from the inside toward the outside. The purified water that has passed through the filter medium 6 flows into the shower head 2 through a purified water passage formed between the outer periphery of the filter medium 6 and the inner periphery of the shower grip 3.
[0030]
In this embodiment, the nonwoven fabrics 8a and 8b are arranged on both the outer peripheral side and the inner peripheral side of the filter medium 6, and among these, the outer nonwoven fabric 8b in particular has a pressure loss of 1.2 to the pressure loss of the filter medium 6. It is wound to be in the range of 1.5 times.
[0031]
In the water purification shower 1 configured in this manner, when the raw water flow path a is stopped by the switching valve 4, the raw water that has flowed in is guided to the inside of the filter medium 6 and flows into the filter medium 6 from the inside of the filter medium 6. Then, it passes through the filter medium 6 toward the outside, flows from the outer peripheral side of the filter medium 6 into the shower head 2, and is discharged from there as a purified water shower.
[0032]
Further, when the raw water flow path a is opened by the switching valve 4, the inflowing raw water is guided inside the filter medium 6, and selectively passes through the inside of the filter medium 6 with low pressure loss and passes through the shower head 2. And discharged to the outside as a shower of raw water.
[0033]
Therefore, since raw water flows into the inside of the filter medium 6 at the time of water purification and raw water, in any case, the water pressure acts on the inner peripheral side of the filter medium and does not receive water pressure from the outer peripheral side of the filter medium 6. That is, in order to make the filter medium 6 have water pressure resistance, only the water pressure from the inside of the filter medium 6 needs to be considered.
[0034]
In the water purification shower of the present invention, when water pressure acts from the inside of the filter medium 6, the filter medium 6 to be deformed in the outer diameter direction is caused by the tension of the nonwoven fabric 8 b as a water-permeable reinforcing member provided on the outer peripheral side of the filter medium 6. Since the form is maintained, even if there is no strength member that supports the filter medium 6 from the inside, it can have sufficient water pressure resistance. Moreover, since the nonwoven fabric 8b has sufficient tensile strength to support the filter medium 6 even if the water flow resistance is small, the water flow resistance can be made smaller than the reinforcement using the conventional core. Moreover, since the filter medium 6 is supported by the tension of the nonwoven fabric 8b, the nonwoven fabric 8b itself may be a thin member, and its exclusive space may be small.
[0035]
And when passing water from the inner side of the filter medium 6 toward the outer side, even if the nonwoven fabric 8b is simply wound on the outer side, even if the water pressure resistance is sufficient, the raw water drifts in the filter medium 6, and the filter medium 6 is locally distributed. There is a possibility of inefficient consumption. However, in the water purification shower of the present invention, when the nonwoven fabric 8b is wound around the outer periphery of the filter medium 6, the pressure loss of the nonwoven fabric 8b is made larger than the pressure loss of the filter medium 6 so that the outer periphery of the filter medium 6 has an appropriate pressure loss. Thus, the drift in the filter medium 6 of the raw water can be eliminated, and the filter medium 6 can be uniformly passed to prevent a decrease in the consumption efficiency of the filter medium 6.
[0036]
Moreover, in the water-purifying shower of this invention, since it is not necessary to provide the special reinforcement material like the conventional with respect to the filter medium 6 itself, cost can be suppressed by that much and it can be reduced by the volume of a reinforcement material.
[0037]
In addition, since the nonwoven fabric 8a provided in the inner peripheral side of the filter medium 6 is mainly for maintaining the form of the filter medium 6, no special consideration is required, but it is preferable that the pressure loss be as low as possible.
[0038]
Thus, in the above water purification shower, water resistance is lower than before, sufficient water pressure resistance is obtained even if the filter medium 6 is not reinforced with a special reinforcing material, and the filter medium 6 can be efficiently consumed as a whole. it can. As shown in FIG. 1, since such excellent performance can be realized with a simple structure, the present invention can be implemented at low cost.
[0039]
【The invention's effect】
As described above, in the water purification shower according to the present invention, the switching operation can be performed with one hand, the switching mechanism is a simple structure, and the filter medium shape is sufficiently formed even when water pressure acts on the filter medium. While being able to maintain, the purified water shower which consumes a filter medium efficiently over the whole and uses the space in a purified water shower efficiently can be provided.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a water purification shower according to an embodiment of the present invention.
FIG. 2 is an enlarged cross-sectional view of the filter medium of FIG.
FIG. 3 is a cross-sectional view showing an example of a conventional water purification shower.
4 is a schematic perspective view showing an example of a switching operation in the water purification shower of FIG. 3. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Water purification shower 2 Shower head 3 Shower grip 4 Switching valve 5 Cartridge 6 Filter medium 7a, 7b Filter medium cap 8a, 8b Water-permeable reinforcement member 9 Raw water inlet a Raw water flow path b Clean water flow path

Claims

A tubular filter medium, a raw water flow path that passes through the inner peripheral side of the filter medium, a purified water flow path that is always open on the downstream side of the filter medium through the outer peripheral side of the filter medium, and in the raw water flow path, and means for opening and closing the raw water flow path which is provided on the downstream side of the filter material, and the raw water flowing through the raw water flow path of the filter media when the means for opening and closing the raw water flow path is closed A water purification shower, characterized in that when the means for opening and closing the raw water flow path is open from the inside to the outside, the raw water flowing through the raw water flow path flows on the inner peripheral side of the filter medium .

The filter material contains fibrous activated carbon, Kiyoshi Mizushi showers of claim 1.

The water purification shower according to claim 1 or 2 in which said filter material contains sulfite.

The water-purifying shower according to claim 3 , wherein the sulfite is calcium sulfite.

The filtration media disposed in the housing, a part or all of the transparent of the housing, purified water shower according to any of claims 1-4.

The water purification shower according to any one of claims 1 to 5 , wherein a water-permeable reinforcing member is provided on an outer periphery of the filter medium.

Reinforcing member of the water permeability is laminated on an outer periphery of the filter material, purified water shower of claim 6.

The water-purifying shower according to claim 6 or 7 , wherein the water-permeable reinforcing member is a nonwoven fabric.

The water purification shower according to any one of claims 6 to 8 , wherein a pressure loss due to the water-permeable reinforcing member is larger than a pressure loss due to a filter medium.

The filtrate outer peripheral side of the flow resistance of the material is greater than the flow resistance the inner peripheral side of the filter material, purified water shower according to any of claims 1-9.