JP5872317B2 - Tap water storage device and tap water supply method - Google Patents

Tap water storage device and tap water supply method Download PDF

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JP5872317B2
JP5872317B2 JP2012035436A JP2012035436A JP5872317B2 JP 5872317 B2 JP5872317 B2 JP 5872317B2 JP 2012035436 A JP2012035436 A JP 2012035436A JP 2012035436 A JP2012035436 A JP 2012035436A JP 5872317 B2 JP5872317 B2 JP 5872317B2
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water
supply pipe
water supply
tap
secondary side
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JP2013170401A (en
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伊藤　良輔
良輔 伊藤
星山　文基
文基 星山
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Sekisui Chemical Co Ltd
Toray Engineering Co Ltd
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Sekisui Chemical Co Ltd
Toyo Construction Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use

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Description

本発明は、水道管を通じて供給される水道水を、給水栓より上流側にて貯水する水道水貯水装置、及びこの水道水貯水装置を用いた水道水給水方法に関する。   The present invention relates to a tap water storage device that stores tap water supplied through a water pipe on the upstream side of a water tap, and a tap water supply method using the tap water storage device.

従来、水道管を通じて供給される水道水を貯水し、断水などの非常時において、貯水した水道水を取水して利用する手段が開発されている（例えば、下記特許文献１、及び２参照）。   2. Description of the Related Art Conventionally, means for storing tap water supplied through a water pipe and taking and using the stored tap water in an emergency such as water outage has been developed (for example, see Patent Documents 1 and 2 below).

特許文献１に記載の非常用貯水装置は、埋設された水道管路の途中に設けられる非常用貯水装置であって、両端に前記水道管路が接続された貯水槽と、前記貯水槽より上流側の水道管路に上流への逆流を防ぐように設けられた逆止弁とを有してなり、断水等の非常時において、前記貯水槽に連通された空気供給管を通じて、貯水槽に空気を導入することによって、前記貯水槽に貯水された水道水を給水栓に向かって送り出し、もって水道水を取水するものである。   An emergency water storage device described in Patent Document 1 is an emergency water storage device provided in the middle of a buried water pipe, and a water tank having both ends connected to the water pipe, and an upstream of the water tank. In the case of an emergency such as a water outage, air is supplied to the water storage tank through the air supply pipe communicated with the water storage tank. By introducing the tap water, the tap water stored in the water storage tank is sent out toward the water tap, and tap water is taken.

一方、特許文献２に記載の給水システムは、住宅内の給水系管路に適用される給水システムであって、前記住宅内に供給される水道水の逆流を防止する第一逆止弁、前記第一逆止弁よりも下流側の水道水を第一給水栓に供給する第一配水管、前記第一逆止弁よりも下流側の水道水を第二給水栓に供給する第二配水管、前記第一配水管及び前記第二配水管の少なくともいずれか一方に設けられる貯水手段、及び前記第二給水栓の少なくとも一つに形成され、前記貯水手段を加圧する加圧装置を接続するための接続口を備え、前記第一給水栓が、給水圧が作用しない非常時には非常取水栓として兼用されることを特徴とするものであり、断水等の非常時において、一の室内に存する第二給水栓から前記貯水槽に向かって空気を導入し、別の室内に存する第一給水栓にて水道水を取水するものである。 On the other hand, the water supply system described in Patent Document 2 is a water supply system applied to a water supply system pipeline in a house, the first check valve for preventing a backflow of tap water supplied into the house, A first water distribution pipe for supplying tap water downstream from the first check valve to the first water tap, and a second water distribution pipe for supplying tap water downstream from the first check valve to the second water tap said at least reservoir means provided on either one of the first water pipe and the second water distribution pipes, and are formed in at least one of the second water faucet for connecting the pressurizing device for pressurizing said reservoir means The first water faucet is also used as an emergency water intake faucet in an emergency when the feed water pressure does not act. Air is introduced from the faucet to the water storage tank and placed in another room. It is intended to intake of tap water in the first faucet that.

実用新案登録第３１３８１４７号公報Utility Model Registration No. 3138147 特開２０１０‐１８５２７２号公報JP 2010-185272 A

しかしながら、特許文献１に記載の非常用貯水装置においては、前記貯水槽に空気を導入するための空気供給管の管内に滞留水が残存したり、多湿の雰囲気となったりするため、前記空気供給管の管内がカビや雑菌の繁殖を促す温床となる場合がある。   However, in the emergency water storage device described in Patent Document 1, since the stagnant water remains in the pipe of the air supply pipe for introducing air into the water storage tank or the atmosphere becomes humid, the air supply The inside of the tube may become a hotbed that encourages the growth of mold and germs.

一方、特許文献２に記載の給水システムは、一の室内に存する第二給水栓から前記貯水槽に向かって空気を導入し、別の室内に存する第一給水栓にて水道水を取水する仕組みを基本構成とするものであり、空気の導入位置と取水位置とが遠隔となることから、取水作業が煩雑なものとなる。   On the other hand, the water supply system described in Patent Document 2 introduces air from the second water faucet existing in one room toward the water storage tank, and takes tap water with the first water faucet existing in another room. Since the air introduction position and the water intake position are remote from each other, the water intake operation becomes complicated.

ここで、特許文献２に記載の給水システムにおいては、空気の導入位置と取水位置とを近接させるべく、更に、前記第一給水栓と同室内にコンセント部を備え、係るコンセント部から前記貯水槽に向かって空気を導入する実施形態も開示されているが、このような構成の給水システムにおいては、前記コンセント部内に滞留水が残存したり、多湿の雰囲気となったりするため、前記コンセント部内にカビや雑菌が繁殖することになる。   Here, in the water supply system described in Patent Document 2, in order to bring the air introduction position and the water intake position close to each other, an outlet portion is further provided in the same room as the first water tap, and the water storage tank is connected to the outlet portion. In the water supply system having such a configuration, stagnant water remains in the outlet portion or a humid atmosphere is generated. Molds and germs will breed.

本発明は、前記技術的課題を解決するために開発されたものであり、貯水タンク内に貯水された水道水を、衛生的、且つ、簡単な作業にて取水することができる水道水貯水装置、及びこの水道水貯水装置を用いた水道水給水方法を提供することを目的とする。   The present invention has been developed to solve the above technical problem, and is capable of taking tap water stored in a water storage tank in a sanitary and simple operation. And it aims at providing the tap water supply method using this tap water storage device.

本発明の水道水貯水装置は、水道管を通じて供給される水道水を、給水栓より上流側にて貯水する水道水貯水装置であって、貯水タンクと、前記貯水タンクの壁面を通じて設けられた流入口に接続されて、水道管を通じて供給される水道水を前記貯水タンク内に導入する一次側給水管と、前記貯水タンクの壁面を通じて設けられた第一流出口に接続されて、前記貯水タンク内に導入された水道水を前記給水栓まで導く二次側第一給水管と、前記一次側給水管に備えられた、水道水の逆流を防止するための逆止弁と、一端が前記貯水タンクの壁面を通じて設けられた第二流出口に接続され、且つ、他端が前記二次側第一給水管の管路に接続された二次側第二給水管と、を具備してなり、更に、前記二次側第二給水管、又は、前記二次側第二給水管と前記二次側第一給水管との接続箇所には、前記二次側第二給水管と前記二次側第一給水管との接続関係につき、前記二次側第二給水管と前記二次側第一給水管とが連通されている第一の状態、および、前記二次側第二給水管と前記二次側第一給水管との連通が遮断されており、且つ、前記二次側第二給水管が当該二次側第二給水管を通じて前記貯水タンク内に空気を導入可能とされている第二の状態、のいずれかの状態に切り替える切替弁が取り付けられており、常時は前記第一の状態とした上で、前記給水栓から水道水を取水する一方、非常時は前記第二の状態とした上で、前記二次側第二給水管を通じて前記貯水タンク内に空気を導入することによって、前記給水栓から水道水を取水するように構成されてなることを特徴とする（以下、本発明装置と称する。）。 The tap water storage device of the present invention is a tap water storage device for storing tap water supplied through a water pipe on the upstream side of a water tap, and includes a storage tank and a flow provided through a wall surface of the storage tank. Connected to an inlet, connected to a primary water supply pipe for introducing tap water supplied through a water pipe into the water storage tank, and a first outlet provided through a wall surface of the water storage tank, A secondary side first water supply pipe for guiding the introduced tap water to the water tap, a check valve provided in the primary side water supply pipe for preventing a backflow of tap water, and one end of the water storage tank A secondary-side second water supply pipe connected to a second outlet provided through the wall surface, and the other end connected to a pipe line of the secondary-side first water supply pipe, and The secondary side second water supply pipe or the secondary side second water supply And the secondary side first water supply pipe, the secondary side second water supply pipe and the second side water supply pipe are connected to the secondary side second water supply pipe and the secondary side first water supply pipe. next side first water supply pipe and the first that are communicated state, and the communication between the secondary-side second water supply pipe and the secondary side first water supply pipe has been cut off, and the secondary side second water supply pipe a second and is capable introduce air into the water storage tank through the secondary side second water supply pipe in the state, mounted switching valve to switch in one of two states, normally In the first state, tap water is taken from the faucet, while in an emergency, the second state is taken and air is supplied into the water storage tank through the secondary side second water supply pipe. by introducing, characterized by comprising configured to intake tap water from the faucet (hereinafter , Referred to as the present invention apparatus.).

本発明装置においては、前記二次側第二給水管と前記二次側第一給水管の接続箇所が前記給水栓の近辺となされ、且つ、前記二次側第二給水管に対する前記切替弁の取り付け位置が、前記接続箇所の近辺となされたものが好ましい態様となる。   In this invention apparatus, the connection location of the said secondary side 2nd water supply pipe and the said secondary side 1st water supply pipe becomes the vicinity of the said water tap, and the said switching valve with respect to the said secondary side 2nd water supply pipe A preferred embodiment is that the attachment position is in the vicinity of the connection location.

本発明装置においては、前記切替弁は、前記二次側第二給水管の上流側と接続される第一口部と、前記二次側第二給水管の下流側と接続される第二口部と、前記第二の状態で前記二次側第二給水管を通じて前記貯水タンク内に空気を導入可能な第三口部と、を有する三方弁であることが好ましい態様となる。 In the device according to the present invention, the switching valve includes a first port connected to the upstream side of the secondary side second water supply pipe, and a second port connected to the downstream side of the secondary side second water supply pipe. It becomes a preferable aspect that it is a three-way valve which has a part and the 3rd opening part which can introduce | transduce air in the said water storage tank through the said secondary side 2nd water supply pipe | tube in the said 2nd state .

本発明装置においては、前記第一流出口が、前記貯水タンクの底部、又は底部近辺に設けられており、前記第二流出口が、前記貯水タンクの頂部、又は頂部近辺に設けられてなるものが好ましい態様となる。 In the device of the present invention, the first outlet is provided at or near the bottom of the water tank, and the second outlet is provided at or near the top of the water tank. This is a preferred embodiment.

本発明装置においては、前記貯水タンクの複数個と、前記一次側給水管における前記逆止弁が備えられた位置より下流側に備えられた、前記一次側給水管を複数に分枝させるヘッダーと、を具備してなり、前記ヘッダーによって分枝された複数の一次側給水管の各々に対し、複数個の前記貯水タンクがそれぞれ個別に接続されてなるものが好ましい態様となる。   In the device of the present invention, a plurality of the water storage tanks, a header provided on the downstream side of the primary side water supply pipe at a position where the check valve is provided, and a header for branching the primary side water supply pipe into a plurality of branches. The plurality of water storage tanks are individually connected to each of the plurality of primary side water supply pipes branched by the header.

本発明の水道水給水方法は、前記本発明装置を用いて水道水を取水する水道水給水方法であって、前記二次側第二給水管と前記二次側第一給水管との接続関係を前記第一の状態とした上で、前記給水栓から水道水を取水する常時取水工程、および、前記二次側第二給水管と前記二次側第一給水管との接続関係を前記第二の状態とした上で、前記二次側第二給水管を通じて前記貯水タンク内に空気を導入し、もって、前記給水栓から水道水を取水する非常時取水工程、のいずれかの工程を実行することによって水道水を取水することを特徴とする。 The tap water supply method of the present invention is a tap water supply method of taking tap water using the device of the present invention, and the connection relationship between the secondary side second water supply pipe and the secondary side first water supply pipe. In the first state, the continuous water intake step of taking tap water from the water tap, and the connection relationship between the secondary side second water supply pipe and the secondary side first water supply pipe In the second state, air is introduced into the water storage tank through the secondary side second water supply pipe, and one of the emergency water intake steps for taking tap water from the water tap is executed. It is characterized by taking tap water.

本発明によれば、貯水タンク内に貯水された水道水を、衛生的、且つ、簡単な作業にて取水することができる。   According to the present invention, tap water stored in a water storage tank can be taken in a sanitary and simple operation.

図１は、実施形態１に係る本発明装置を家屋の給水管路に適用した状態を示す断面図である。FIG. 1 is a cross-sectional view showing a state in which the device of the present invention according to Embodiment 1 is applied to a water supply pipeline of a house. 図２は、本発明装置における切替弁を拡大して示す断面図であり、図２（ａ）は第一の状態、図２（ｂ）は第二の状態をそれぞれ示す。FIG. 2 is an enlarged cross-sectional view of the switching valve in the device of the present invention. FIG. 2 (a) shows a first state, and FIG. 2 (b) shows a second state. 図３（ａ）〜（ｃ）は、本発明装置を用いた貯水工程、常時取水工程、及び非常時取水工程をそれぞれ示す模式図である。FIGS. 3A to 3C are schematic diagrams respectively showing a water storage process, a constant water intake process, and an emergency water intake process using the device of the present invention. 図４は、本発明装置の別の例を示す模式図である。FIG. 4 is a schematic view showing another example of the device of the present invention. 図５は、切替弁の別の取り付け状態を示す断面図であり、図５（ａ）は第一の状態、図５（ｂ）は第二の状態をそれぞれ示す。FIGS. 5A and 5B are cross-sectional views showing another attachment state of the switching valve. FIG. 5A shows a first state, and FIG. 5B shows a second state. 図６は、実施形態２に係る本発明装置を示す模式図である。FIG. 6 is a schematic diagram showing the device of the present invention according to the second embodiment.

以下、本発明の実施形態について説明する。なお、本発明は、この実施形態に限定されるものではない。   Hereinafter, embodiments of the present invention will be described. Note that the present invention is not limited to this embodiment.

＜実施形態１＞
図１に、本発明装置１の一実施形態を示す。本実施形態に係る本発明装置１は、水道管１００を通じて供給される水道水を、給水栓１０より上流側にて貯水するものであり、貯水タンク２と、前記貯水タンク２に水道水を導入するための一次側給水管３と、前記一次側給水管３に取り付けられた逆止弁４と、前記貯水タンク２から前記給水栓１０まで水道水を導くための二次側第一給水管５と、二次側第二給水管６と、前記二次側第二給水管６に取り付けられた切替弁７とを具備する。 <Embodiment 1>
FIG. 1 shows an embodiment of the device 1 of the present invention. The device 1 of the present invention according to the present embodiment stores tap water supplied through the water pipe 100 upstream of the water tap 10, and introduces tap water into the water storage tank 2 and the water storage tank 2. A primary side water supply pipe 3, a check valve 4 attached to the primary side water supply pipe 3, and a secondary side first water supply pipe 5 for guiding tap water from the water storage tank 2 to the water tap 10 And a secondary side second water supply pipe 6 and a switching valve 7 attached to the secondary side second water supply pipe 6.

前記貯水タンク２は、硬質塩化ビニル製の円筒状の中空体であり、その長さ方向を地面に沿わせた状態にて家屋の床下に配されている。前記貯水タンク２には、その壁面を通じて貫通孔が三箇所（流入口２１、第一流出口２２、第二流出口２３）形成されている。更に詳しくは、前記流入口２１は、前記貯水タンク２の前記水道管１００側寄りの一端面（上流側の端面）に設けられており、前記第一流出口２２及び前記第二流出口２３は、前記貯水タンク２の他端面（下流側の端面）に設けられている。特に、前記第一流出口２２は、前記貯水タンク２の底部側に近接して設けられており、前記第二流出口２３は、前記貯水タンク２の頂部側に近接して設けられている。   The water storage tank 2 is a cylindrical hollow body made of hard vinyl chloride, and is arranged under the floor of the house with its length direction being along the ground. The water storage tank 2 is formed with three through holes (inlet 21, first outlet 22, and second outlet 23) through the wall surface. More specifically, the inlet 21 is provided on one end surface (upstream end surface) of the water storage tank 2 near the water pipe 100 side, and the first outlet 22 and the second outlet 23 are It is provided on the other end surface (downstream end surface) of the water storage tank 2. In particular, the first outlet 22 is provided close to the bottom side of the water storage tank 2, and the second outlet 23 is provided close to the top side of the water storage tank 2.

前記一次側給水管３は、硬質塩化ビニル製の管状体（パイプ）であり、その一端が前記水道管１００に接続され、他端が前記貯水タンク２に設けられた前記流入口２１に接続されている。前記一次側給水管３の管路（前記水道管１００と前記貯水タンク２との間）には、前記逆止弁４が取り付けられている。前記逆止弁４は、チャッキやチェックバルブとも称されるものであり、水道水の逆流を防止するものである。   The primary water supply pipe 3 is a tubular body (pipe) made of hard vinyl chloride, one end of which is connected to the water pipe 100 and the other end is connected to the inlet 21 provided in the water storage tank 2. ing. The check valve 4 is attached to a pipe line of the primary side water supply pipe 3 (between the water pipe 100 and the water storage tank 2). The check valve 4 is also referred to as a check or a check valve, and prevents reverse flow of tap water.

前記二次側第一給水管５は、硬質塩化ビニル製の管状体（パイプ）であり、その一端が前記貯水タンク２に設けられた前記第一流出口２２に接続され、他端が前記給水栓１０に接続されている。   The secondary side first water supply pipe 5 is a tubular body (pipe) made of hard vinyl chloride, one end of which is connected to the first outlet 22 provided in the water storage tank 2, and the other end of the water tap. 10 is connected.

前記二次側第二給水管６は、硬質塩化ビニル製の管状体（パイプ）であり、その一端が前記貯水タンク２に設けられた第二流出口２３に接続され、他端が前記二次側第一給水管５の管路に接続されている。前記二次側第二給水管６と前記二次側第一給水管５との接続箇所は、前記給水栓１０の近辺（本実施形態においては、シンク下の空間内）となされている。   The secondary side second water supply pipe 6 is a tubular body (pipe) made of hard vinyl chloride, one end of which is connected to a second outlet 23 provided in the water storage tank 2, and the other end is the secondary body. It is connected to the pipe line of the side first water supply pipe 5. The connection point between the secondary side second water supply pipe 6 and the secondary side first water supply pipe 5 is in the vicinity of the water tap 10 (in the present embodiment, in the space under the sink).

前記二次側第二給水管６の管路には、前記切替弁７が取り付けられている。前記二次側第二給水管６に対する前記切替弁７の取り付け位置は、前記二次側第二給水管６と前記二次側第一給水管５との接続箇所の近辺、且つ、前記貯水タンク２の頂部より上側の位置（本実施形態においては、シンク下の空間内）となされている。   The switching valve 7 is attached to a pipe line of the secondary side second water supply pipe 6. The switching valve 7 is attached to the secondary side second water supply pipe 6 in the vicinity of the connection point between the secondary side second water supply pipe 6 and the secondary side first water supply pipe 5 and the water storage tank. The position is above the top of 2 (in this embodiment, in the space below the sink).

図２に示すように前記切替弁７は三方弁であり、弁本体７１内に内蔵された、Ｌ字状の管路を有するボール７２が回転させられることにより、前記二次側第二給水管６と前記二次側第一給水管５との接続関係につき、前記二次側第二給水管６と前記二次側第一給水管５とを連通させる第一の状態（図２（ａ）参照）と、前記二次側第二給水管６と前記二次側第一給水管５との連通を遮断させ、且つ、前記二次側第二給水管６を開放させる第二の状態（図２（ｂ）参照）とに切り替えることができる仕組みとなっている。以下、前記切替弁７における前記二次側第二給水管６の上流側（前記貯水タンク２側）と接続された口部を第一口部７１１、下流側（前記二次側第一給水管５側）と接続された口部を第二口部７１２、前記第二の状態となされた際に、前記二次側第二給水管６を大気開放させる口部を第三口部７１３と称する。   As shown in FIG. 2, the switching valve 7 is a three-way valve, and the secondary side second water supply pipe is formed by rotating a ball 72 having an L-shaped pipe line built in the valve main body 71. 6 and the secondary side first water supply pipe 5, a first state in which the secondary side second water supply pipe 6 and the secondary side first water supply pipe 5 communicate with each other (FIG. 2A). And a second state in which communication between the secondary side second water supply pipe 6 and the secondary side first water supply pipe 5 is blocked and the secondary side second water supply pipe 6 is opened (see FIG. 2 (b)). Hereinafter, in the switching valve 7, the mouth connected to the upstream side (the water storage tank 2 side) of the secondary side second water supply pipe 6 is referred to as a first mouth part 711, and the downstream side (the secondary side first water supply pipe). 5 port) is connected to the second port portion 712, and when the second state is brought to the second state, the port portion that opens the secondary side second water supply pipe 6 to the atmosphere is referred to as the third port portion 713. .

なお、本実施形態においては、前記貯水タンク２として、硬質塩化ビニル製のものを用いたが、前記貯水タンク２を形成する素材としては、特に限定されるものではなく、硬質塩化ビニルの他、ポリエチレンやポリプロピレンなどの合成樹脂、或いはステンレス等の金属にて成形することができる。又、前記貯水タンク２の容量としては特に限定されるものではないが、４人家族が２〜５日の間、飲料水として使用できる程度の量を貯水できる容量（具体的には、２０〜５０リットル）とすることが好ましい。   In addition, in this embodiment, although the thing made from hard vinyl chloride was used as the said water storage tank 2, as a raw material which forms the said water storage tank 2, it is not specifically limited, In addition to hard vinyl chloride, It can be formed of a synthetic resin such as polyethylene or polypropylene, or a metal such as stainless steel. In addition, the capacity of the water storage tank 2 is not particularly limited, but a capacity (specifically 20 to 20) that can store an amount that can be used as drinking water for a family of four for 2 to 5 days. 50 liters).

又、本実施形態においては、前記一次側給水管３、前記二次側第一給水管５、前記二次側第二給水管６として、硬質塩化ビニル製の樹脂管を用いたが、前記各管を形成する素材としては、特に限定されるものではなく、硬質塩化ビニルの他、ポリエチレンやポリプロピレンなどの合成樹脂からなる樹脂管や、ステンレス等の金属管、或いは、金属強化樹脂管等を用いることができる。特に、本発明においては、配管系路の簡略化、及び配管スペースの減少の観点から、前記二次側第一給水管５、及び前記二次側第二給水管６をペアチューブにて形成することが好ましい。   In the present embodiment, resin pipes made of hard vinyl chloride are used as the primary side water supply pipe 3, the secondary side first water supply pipe 5, and the secondary side second water supply pipe 6. The material for forming the tube is not particularly limited, and in addition to hard vinyl chloride, a resin tube made of a synthetic resin such as polyethylene or polypropylene, a metal tube such as stainless steel, or a metal reinforced resin tube is used. be able to. In particular, in the present invention, the secondary side first water supply pipe 5 and the secondary side second water supply pipe 6 are formed of a pair tube from the viewpoint of simplification of the piping system path and reduction of the piping space. It is preferable.

以下、前記構成を有する本発明装置１を用いた本発明の水道水給水方法を説明する。   Hereinafter, the tap water supply method of this invention using this invention apparatus 1 which has the said structure is demonstrated.

‐貯水工程‐
本発明の水道水給水方法を実行するに先立ち、前記貯水タンク２内には水道水が貯水される。前記貯水タンク２内に水道水を貯水するにあたっては、まず、前記切替弁７を操作することによって、前記二次側第二給水管６と前記二次側第一給水管５との接続関係を前記第二の状態となるようにし、前記貯水タンク２内に水道水を導入する（図３（ａ）参照）。貯水タンク２内に存在していた空気は、水道水の導入に伴って、前記二次側第二給水管６を通じて前記切替弁７まで送り出され、前記切替弁７における前記第三口部７１３を介して大気中に排出される。この際、前記給水栓１０を開放すれば、前記給水栓１０からも空気を排出することができ、その結果、貯水タンク２内に存在していた空気の排出がより迅速となり、貯水工程に要する時間が短くなる。その後、前記第三口部７１３から水道水が漏出してきた時点で前記貯水タンク２が満水になったものとみなし、前記切替弁７を操作することによって、前記二次側第二給水管６と前記二次側第一給水管５との接続関係を前記第一の状態となるようにする。なお、本実施形態においては、前記二次側第二給水管６が接続される前記第二流出口２３を、前記貯水タンク２の頂部側に近接して設けているから、基本的に前記貯水タンク２内に存する空気を全て排出することが可能となっている。 -Water storage process-
Prior to executing the tap water supply method of the present invention, tap water is stored in the water storage tank 2. In storing tap water in the water storage tank 2, first, by operating the switching valve 7, the connection relationship between the secondary side second water supply pipe 6 and the secondary side first water supply pipe 5 is established. In the second state, tap water is introduced into the water storage tank 2 (see FIG. 3A). The air existing in the water storage tank 2 is sent to the switching valve 7 through the secondary-side second water supply pipe 6 with the introduction of tap water, and the third port 713 in the switching valve 7 is sent to the switching tank 7. Through the atmosphere. At this time, if the water tap 10 is opened, air can be discharged also from the water tap 10, and as a result, the air existing in the water storage tank 2 can be discharged more quickly, which is necessary for the water storage process. Time is shortened. Thereafter, when the tap water leaks from the third port 713, the water storage tank 2 is considered to be full, and by operating the switching valve 7, the secondary side second water supply pipe 6 and The connection relationship with the secondary side first water supply pipe 5 is set to the first state. In the present embodiment, since the second outlet 23 to which the secondary side second water supply pipe 6 is connected is provided close to the top side of the water storage tank 2, basically the water storage All the air existing in the tank 2 can be discharged.

前記貯水タンク２内に水道水を貯水する貯水工程を実行した後、本発明の水道水給水方法においては、後述する常時取水工程、および非常時取水工程のいずれかを選択することによって、水道水を取水する。 After performing the water storage process of storing tap water in the water storage tank 2, in the tap water supply method of the present invention, the tap water is selected by selecting one of the regular water intake process and the emergency water intake process described later. Take water.

‐常時取水工程‐
常時取水工程は、通常、水道水の水圧（供給圧）が所定値以上を維持している常時において実行される。この常時取水工程によって、水道水を前記給水栓１０から取水するにあたっては、前記二次側第二給水管６と前記二次側第一給水管５との接続関係を前記第一の状態としたまま、前記給水栓１０を開く。この際、一定の水圧にて前記水道管１００を通じて供給される水道水は、前記一次側給水管３を通じて前記貯水タンク２に導入され、前記二次側第一給水管５及び前記二次側第二給水管６を通じて、前記給水栓１０まで至り、前記給水栓１０から取水される（図３（ｂ）参照）。 -Regular water intake process-
The regular water intake step is usually executed at a time when the water pressure (supply pressure) of tap water is maintained at a predetermined value or more. In taking the tap water from the faucet 10 by this constant water intake process, the connection relationship between the secondary side second water supply pipe 6 and the secondary side first water supply pipe 5 is set to the first state. The water tap 10 is opened. At this time, tap water supplied through the water pipe 100 at a constant water pressure is introduced into the water storage tank 2 through the primary side water supply pipe 3, and the secondary side first water supply pipe 5 and the secondary side water supply pipe are supplied. Through the two water supply pipes 6, the water tap 10 is reached and water is taken from the water tap 10 (see FIG. 3B).

即ち、常時取水工程時、前記貯水タンク２内に導入された水道水は、前記二次側第一給水管５を通じて送り出されるルート、および、前記二次側第二給水管６を通じて送り出されるルートのいずれかを経由し、前記給水栓１０の上流側にて合流される。 That is, during the regular water intake process, the tap water introduced into the water storage tank 2 has a route that is sent out through the secondary side first water supply pipe 5 and a route that is sent out through the secondary side second water supply pipe 6. It is merged on either side of the water tap 10 via either of them.

従って、常時取水工程時、前記二次側第一給水管５、及び前記二次側第二給水管６のいずれの管路においても水道水が通水されることになる。これにより、前記二次側第一給水管５、及び前記二次側第二給水管６のいずれの管路においても、長期間にわたって水道水が滞留することがなくなり、管路内におけるカビや雑菌の繁殖を防止することができる。   Therefore, during the regular water intake process, tap water is passed through any of the secondary side first water supply pipe 5 and the secondary side second water supply pipe 6. Thereby, in any of the secondary side first water supply pipe 5 and the secondary side second water supply pipe 6, tap water does not stay for a long period of time, and mold and bacteria in the pipe line are prevented. Can be prevented from breeding.

又、前記貯水タンク２内の水道水は、取水の度に順次新たな水道水と交換されていくため、前記貯水タンク２内の水道水は常時、その鮮度を維持する。   Further, since the tap water in the water storage tank 2 is sequentially replaced with new tap water every time water is taken, the freshness of the tap water in the water storage tank 2 is always maintained.

‐非常時取水工程‐
非常時取水工程は、通常、断水時などの水道水の水圧が低下し、安定して水道水の供給を得ることができなくなった非常時において実行される。非常時取水工程によって、水道水を前記給水栓１０から取水するにあたっては、まず、前記切替弁７を操作し、前記二次側第二給水管６と前記二次側第一給水管５との接続関係を前記第二の状態とする。 -Emergency water intake process-
The emergency water intake process is usually performed in an emergency when the water pressure of tap water is reduced, such as when water is shut down, and it becomes impossible to obtain a stable supply of tap water. In taking tap water from the water tap 10 by the emergency water intake step, first, the switching valve 7 is operated, and the secondary side second water supply pipe 6 and the secondary side first water supply pipe 5 are connected. The connection relation is the second state.

更に、前記切替弁７における第三口部７１３にエアコンプレッサーや手動ポンプなどの空気導入手段（図示せず）を接続し、前記二次側第二給水管６を通じて空気を前記貯水タンク２内に導入する（図３（ｃ）参照）。   Further, an air introducing means (not shown) such as an air compressor or a manual pump is connected to the third port 713 of the switching valve 7, and air is introduced into the water storage tank 2 through the secondary side second water supply pipe 6. It is introduced (see FIG. 3C).

この作業によって、前記貯水タンク２内の内圧が上がり、貯水タンク２内に貯水されていた水道水には、前記二次側第一給水管５を通じて前記給水栓１０に向かう水圧が付与される。なお、本発明装置１においては、前記一次側給水管３の管路に前記逆止弁４を取り付けているから、前記貯水タンク２内に空気を導入して、前記貯水タンク２内の内圧を上げても、前記貯水タンク２内の水道水が、前記水道管１００側に向かって逆流することが好適に防止されている。   By this operation, the internal pressure in the water storage tank 2 is increased, and the tap water stored in the water storage tank 2 is given a water pressure toward the water tap 10 through the secondary side first water supply pipe 5. In the device 1 of the present invention, the check valve 4 is attached to the conduit of the primary side water supply pipe 3, so that air is introduced into the water storage tank 2 to reduce the internal pressure in the water storage tank 2. Even if it raises, it is prevented suitably that the tap water in the said storage tank 2 flows backward toward the said water pipe 100 side.

そして、前記貯水タンク２内の内圧が上がった状態にて、前記給水栓１０を開けば、前記貯水タンク２の内圧に押し出されて、前記二次側第一給水管５を通じて送り出された水道水を取水することができる。なお、本実施形態においては、前記二次側第一給水管５が接続される前記第一流出口２２を、前記貯水タンク２の底部側に近接して設けているから、前記貯水タンク２内に貯水された水道水をほぼ余すことなく取水することができる。   Then, when the water tap 10 is opened while the internal pressure in the water storage tank 2 is increased, the tap water pushed out by the internal pressure of the water storage tank 2 and sent out through the secondary side first water supply pipe 5 is used. Can take water. In the present embodiment, the first outlet 22 to which the secondary side first water supply pipe 5 is connected is provided close to the bottom side of the water storage tank 2. The stored tap water can be taken in almost without waste.

その後、水道水の供給が安定したなら、前記貯水工程を再度行うことによって、前記貯水タンク２内に水道水を貯水する。   After that, when the supply of tap water is stabilized, the tap water is stored in the water storage tank 2 by performing the water storage process again.

前記構成を有する本発明装置１は、常時取水工程時に、前記切替弁７によって、前記二次側第二給水管６と前記二次側第一給水管５との接続関係が前記第一の状態となされて、前記二次側第二給水管６と前記二次側第一給水管５のいずれの管にも水道水が通水されるから、前記二次側第二給水管６内にカビや雑菌が殆ど繁殖し得ない。これより、常時取水工程、及び非常時取水工程のいずれにおいても、衛生的な水道水を取水することができる。 In the present invention device 1 having the above-described configuration, the connection relationship between the secondary-side second water supply pipe 6 and the secondary-side first water supply pipe 5 is in the first state by the switching valve 7 during the constant water intake process. Then, since tap water is passed through both the secondary side second water supply pipe 6 and the secondary side first water supply pipe 5, mold is formed in the secondary side second water supply pipe 6. Almost no bacteria can propagate. Thus, sanitary tap water can be taken in both the regular water intake process and the emergency water intake process.

又、前記二次側第二給水管６と前記二次側第一給水管５の接続箇所が前記給水栓１０の近辺となされ、且つ、前記二次側第二給水管６に対する前記切替弁７の取り付け位置が、前記接続箇所の近辺となされていることから、非常時取水工程において、前記切替弁７から空気を導入する作業と、前記給水栓１０から取水する作業とを、同一人が同一場所において行うことも可能となる。なお、本発明装置１においては、前記二次側第二給水管６と前記二次側第一給水管５の接続箇所を前記給水栓１０から１ｍ以内（好ましくは、５０ｃｍ以内）の位置とし、更に、前記二次側第二給水管６に対する前記切替弁７の取り付け位置を、前記接続箇所から５０ｃｍ以内（好ましくは３０ｃｍ以内）の位置とすることが好ましい。   In addition, the connection point between the secondary side second water supply pipe 6 and the secondary side first water supply pipe 5 is close to the water tap 10, and the switching valve 7 with respect to the secondary side second water supply pipe 6 is provided. Since the attachment position is near the connection location, in the emergency water intake process, the same person performs the work of introducing air from the switching valve 7 and the work of taking water from the water tap 10. It can also be performed at a place. In addition, in this invention apparatus 1, let the connection location of the said secondary side 2nd water supply pipe 6 and the said secondary side 1st water supply pipe 5 be a position within 1 m (preferably within 50 cm) from the said water tap 10, Furthermore, it is preferable that the attachment position of the switching valve 7 with respect to the secondary side second water supply pipe 6 is a position within 50 cm (preferably within 30 cm) from the connection location.

特に、前記切替弁７の取り付け位置は、図５に示すように、前記二次側第二給水管６と前記二次側第一給水管５の接続箇所とすることが好ましい。前記切替弁７の取り付け位置を、前記二次側第二給水管６と前記二次側第一給水管５の接続箇所とすれば（言い換えれば、前記二次側第二給水管６と前記二次側第一給水管５を前記切替弁７を介して接続すれば）、前記二次側第一給水管５に枝管を設ける必要がなくなり、配管構造が簡略化される。なお、図５（ａ）は、前記切替弁７を前記第一の状態とした場合を示した図であり、図５（ｂ）は、前記切替弁７を前記第二の状態とした場合を示した図である。   In particular, as shown in FIG. 5, the attachment position of the switching valve 7 is preferably a connection point between the secondary side second water supply pipe 6 and the secondary side first water supply pipe 5. If the mounting position of the switching valve 7 is the connection location of the secondary side second water supply pipe 6 and the secondary side first water supply pipe 5 (in other words, the secondary side second water supply pipe 6 and the second side water supply pipe 6 If the secondary side first water supply pipe 5 is connected via the switching valve 7), it is not necessary to provide a branch pipe on the secondary side first water supply pipe 5, and the piping structure is simplified. FIG. 5A is a diagram showing the case where the switching valve 7 is in the first state, and FIG. 5B is the case where the switching valve 7 is in the second state. FIG.

又、本実施形態においては、前記二次側第二給水管６が接続される前記第二流出口２３を、前記貯水タンク２の他端面（下流側の端面）、且つ、前記貯水タンク２の頂部側に近接した位置に設けている。即ち、前記第二流出口２３を、前記貯水タンク２の頂部近辺に設けている。   Further, in the present embodiment, the second outlet 23 connected to the secondary side second water supply pipe 6 is connected to the other end surface (downstream end surface) of the water storage tank 2 and the water storage tank 2. It is provided at a position close to the top side. That is, the second outlet 23 is provided near the top of the water storage tank 2.

前述の如く、本発明装置１において、前記第二流出口２３を前記貯水タンク２の頂部近辺に設ければ、貯水工程終了時点における前記貯水タンク２内に残存される空気が非常に少なくなり、もって、前記貯水タンク２の有効容積を向上させることができる。従って、本発明装置１においては、前記第二流出口２３を、前記貯水タンク２の頂部、又は、頂部近辺（具体的には、底部から頂部に向かって１０ｃｍ以内（好ましくは５ｃｍ以内）の位置）に設けることが好ましい。なお、前記第二流出口２３を前記貯水タンク２の頂部に設けた状態とは、図４に示すような状態（前記貯水タンク２の頂部壁面を貫通させて前記第二流出口２３を設けた状態）を意味する。   As described above, if the second outlet 23 is provided in the vicinity of the top of the water storage tank 2 in the device 1 of the present invention, the air remaining in the water storage tank 2 at the end of the water storage process is greatly reduced. Therefore, the effective volume of the water storage tank 2 can be improved. Accordingly, in the device 1 of the present invention, the second outlet 23 is positioned at the top of the water storage tank 2 or in the vicinity of the top (specifically, within 10 cm (preferably within 5 cm) from the bottom toward the top. ) Is preferably provided. The state where the second outlet 23 is provided at the top of the water storage tank 2 is a state as shown in FIG. 4 (the second outlet 23 is provided through the top wall of the water storage tank 2). State).

又、本実施形態においては、前記二次側第一給水管５が接続される前記第一流出口２２を、前記貯水タンク２の水道管１００側寄りの一端面（上流側の端面）、且つ。前記貯水タンク２の底部側に近接した位置に設けている。即ち、前記第一流出口２２を、前記貯水タンク２の底部近辺に設けている。   In the present embodiment, the first outlet 22 to which the secondary first water supply pipe 5 is connected is one end face (upstream end face) of the water storage tank 2 near the water pipe 100 side. It is provided at a position close to the bottom side of the water storage tank 2. That is, the first outlet 22 is provided near the bottom of the water storage tank 2.

前述の如く、本発明装置１において、前記第一流出口２２を前記貯水タンク２の底部近辺に設ければ、非常時における取水工程時に、前記貯水タンク２内に貯水された水道水をほぼ余すことなく取水することができる。従って、本発明装置１においては、前記第一流出口２２を、前記貯水タンク２の底部、又は底部近辺（具体的には、頂部から底部に向かって１０ｃｍ以内（好ましくは５ｃｍ以内）の位置）に設けることが好ましい。なお、前記第一流出口２２を前記貯水タンク２の底部に設けた状態とは、図４に示すような状態（前記貯水タンク２の底部壁面を貫通させて前記第一流出口２２を設けた状態）を意味する。   As described above, if the first outlet 22 is provided in the vicinity of the bottom of the water storage tank 2 in the device 1 of the present invention, the tap water stored in the water storage tank 2 is largely left during the water intake process in an emergency. Water can be taken without. Therefore, in the device 1 of the present invention, the first outlet 22 is placed at the bottom of the water storage tank 2 or near the bottom (specifically, the position within 10 cm (preferably within 5 cm) from the top toward the bottom). It is preferable to provide it. The state where the first outlet 22 is provided at the bottom of the water storage tank 2 is a state as shown in FIG. 4 (the state where the first outlet 22 is provided through the bottom wall of the water storage tank 2). Means.

なお、本実施形態においては、前記貯水工程において、前記二次側第二給水管６と前記二次側第一給水管５との接続関係を前記第二の状態となるようにし、もって、前記貯水タンク２内に積極的に水道水を貯水させているが、前記貯水タンク２に水道水を貯水する方法としては、この方法に限られない。例えば、前記切替弁７にて、前記二次側第二給水管６と前記二次側第一給水管５との接続関係を前記第一の状態となるようにし、前記給水栓１０から取水しながら、徐々に前記貯水タンク２内に水道水が貯水されるようにしても良い。この際、前記貯水タンク２内に存在していた空気は、前記二次側第二給水管６を通じて、前記給水栓１０から水道水と共に排出される。   In this embodiment, in the water storage step, the connection relationship between the secondary side second water supply pipe 6 and the secondary side first water supply pipe 5 is in the second state, Although the tap water is positively stored in the water storage tank 2, the method for storing the tap water in the water storage tank 2 is not limited to this method. For example, in the switching valve 7, the connection relationship between the secondary side second water supply pipe 6 and the secondary side first water supply pipe 5 is set to the first state, and water is taken from the water tap 10. However, tap water may be gradually stored in the water storage tank 2. At this time, the air existing in the water storage tank 2 is discharged from the water tap 10 together with tap water through the secondary side second water supply pipe 6.

又、本実施形態においては、前記非常時取水工程において、前記貯水タンク２内の内圧を上げた後、前記給水栓１０を開くことによって水道水を取水しているが、前記貯水タンク２内に空気を導入する作業と平行して、前記給水栓１０から水道水を取水しても良い。   In the present embodiment, in the emergency water intake step, tap water is taken by opening the water tap 10 after raising the internal pressure in the water storage tank 2. In parallel with the work of introducing air, tap water may be taken from the water tap 10.

＜実施形態２＞
図６に、本発明装置１の他の実施形態を示す。本実施形態に係る本発明装置１は、水道管１００を通じて供給される水道水を、複数の貯水タンク２にて貯水し、各貯水タンク２それぞれに貯水された水道水を個別の給水栓１０にて取水するものである。 <Embodiment 2>
FIG. 6 shows another embodiment of the device 1 of the present invention. The device 1 of the present invention according to the present embodiment stores tap water supplied through a water pipe 100 in a plurality of water storage tanks 2 and stores the tap water stored in each of the water storage tanks 2 into individual water taps 10. Water intake.

即ち、本実施形態に係る本発明装置１が、前記実施形態１に係る本発明装置１と異なる点は、前記貯水タンク２が複数個存在し、前記一次側給水管３における前記逆止弁４が備えられた位置より下流側において、前記一次側給水管３を複数に分枝させるヘッダー８が備えられてなり、しかも、前記ヘッダー８によって分枝された複数の一次側給水管３の各々に対し、複数個の前記貯水タンク２がそれぞれ個別に接続されてなるところにある。   That is, the device 1 of the present invention according to the present embodiment is different from the device 1 of the present invention 1 according to the first embodiment in that there are a plurality of the water storage tanks 2 and the check valve 4 in the primary water supply pipe 3. A header 8 for branching the primary side water supply pipe 3 into a plurality of branches is provided downstream from the position where the primary water supply pipe 3 is branched, and each of the plurality of primary side water supply pipes 3 branched by the header 8 is provided. On the other hand, the plurality of water storage tanks 2 are individually connected.

このような構造にて、水道管１００を通じて供給される水道水を、複数の貯水タンク２にて貯水し、各貯水タンク２それぞれに貯水された水道水を個別の給水栓１０にて取水し得る仕組みとすれば、例えば、地震などによって断水状態となった際に、一の給水栓１０が使用不可能となったとしても、他の給水栓１０を使用して取水することが可能となる利点が生じる。   With such a structure, tap water supplied through the water pipe 100 can be stored in a plurality of water storage tanks 2, and the tap water stored in each of the water storage tanks 2 can be taken in by individual water taps 10. If the mechanism is used, for example, even when one water faucet 10 becomes unusable in the event of a water outage due to an earthquake or the like, it is possible to take water using another water faucet 10 Occurs.

又、前記ヘッダー８にて、前記一次側給水管３を分枝させれば、前記ヘッダー８を点検口付近に配置させることが可能となり、漏水補修等のメンテナンス性が向上する。   Further, if the primary side water supply pipe 3 is branched at the header 8, the header 8 can be arranged near the inspection port, and maintenance performance such as water leakage repair is improved.

更に、前記ヘッダー８を、前記一次側給水管３における前記逆止弁４が備えられた位置より下流側に設けることによって、前記逆止弁４が前記ヘッダー８一個あたり一個しか必要なくなり、部品点数を減少させ、もって、製品コストを下げることが可能となる。   Further, by providing the header 8 on the downstream side of the primary water supply pipe 3 from the position where the check valve 4 is provided, only one check valve 4 is required for each header 8, and the number of parts is reduced. As a result, the product cost can be reduced.

その余は、前記実施形態１と同様であることから、繰り返しを避けるべくここでは説明を省略する。   Since the remainder is the same as that of the first embodiment, the description is omitted here to avoid repetition.

なお、本発明は、その精神または主要な特徴から逸脱することなく、他のいろいろな形で実施することができる。そのため、上述の実施形態はあらゆる点で単なる例示にすぎず、限定的に解釈してはならない。本発明の範囲は特許請求の範囲によって示すものであって、明細書本文には、なんら拘束されない。さらに、特許請求の範囲の均等範囲に属する変形や変更は、全て本発明の範囲内のものである。   The present invention can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-mentioned embodiment is only a mere illustration in all points, and should not be interpreted limitedly. The scope of the present invention is indicated by the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

本発明構造は、断水時における飲料水を確保する手段として、好適に利用することができる。   The structure of the present invention can be suitably used as a means for securing drinking water at the time of water outage.

１ 水道水貯水装置（本発明装置）
２ 貯水タンク
２１ 流入口
２２ 第一流出口
２３ 第二流出口
３ 一次側給水管
４ 逆止弁
５ 二次側第一給水管
６ 二次側第二給水管
７ 切替弁
７１ 弁本体
７１１ 第一口部
７１２ 第二口部
７１３ 第三口部
７２ ボール
８ ヘッダー
１０ 給水栓
１００ 水道管 1 Tap water storage device (device of the present invention)
2 water storage tank 21 inlet 22 first outlet 23 second outlet 3 primary side water supply pipe 4 check valve 5 secondary side first water supply pipe 6 secondary side second water supply pipe 7 switching valve 71 valve body 711 first port Portion 712 Second Portion 713 Third Portion 72 Ball 8 Header 10 Water Tap 100 Water Pipe

Claims (6)

水道管を通じて供給される水道水を、給水栓より上流側にて貯水する水道水貯水装置であって、
貯水タンクと、
前記貯水タンクの壁面を通じて設けられた流入口に接続されて、水道管を通じて供給される水道水を前記貯水タンク内に導入する一次側給水管と、
前記貯水タンクの壁面を通じて設けられた第一流出口に接続されて、前記貯水タンク内に導入された水道水を前記給水栓まで導く二次側第一給水管と、
前記一次側給水管に備えられた、水道水の逆流を防止するための逆止弁と、
一端が前記貯水タンクの壁面を通じて設けられた第二流出口に接続され、且つ、他端が前記二次側第一給水管の管路に接続された二次側第二給水管と、
を具備してなり、
更に、前記二次側第二給水管、又は、前記二次側第二給水管と前記二次側第一給水管との接続箇所には、前記二次側第二給水管と前記二次側第一給水管との接続関係につき、
前記二次側第二給水管と前記二次側第一給水管とが連通されている第一の状態、
および、前記二次側第二給水管と前記二次側第一給水管との連通が遮断されており、且つ、前記二次側第二給水管が当該二次側第二給水管を通じて前記貯水タンク内に空気を導入可能とされている第二の状態、
のいずれかの状態に切り替える切替弁が取り付けられており、
常時は前記第一の状態とした上で、前記給水栓から水道水を取水する一方、非常時は前記第二の状態とした上で、前記二次側第二給水管を通じて前記貯水タンク内に空気を導入することによって、前記給水栓から水道水を取水するように構成されてなることを特徴とする水道水貯水装置。 A tap water storage device for storing tap water supplied through a water pipe upstream of a water tap,
A water storage tank,
A primary side water supply pipe that is connected to an inlet provided through the wall surface of the water storage tank and introduces tap water supplied through the water pipe into the water storage tank;
A secondary-side first water supply pipe that is connected to a first outlet provided through the wall surface of the water storage tank and guides tap water introduced into the water storage tank to the water tap;
A check valve for preventing a back flow of tap water provided in the primary side water supply pipe;
A secondary side second water supply pipe having one end connected to a second outlet provided through the wall surface of the water storage tank, and the other end connected to a pipe line of the secondary side first water supply pipe;
Comprising
Further, the secondary side second water supply pipe, or the secondary side second water supply pipe and the secondary side first water supply pipe are connected to the secondary side second water supply pipe and the secondary side. Regarding the connection with the first water pipe,
A first state in which the secondary side second water supply pipe communicates with the secondary side first water supply pipe;
In addition , communication between the secondary side second water supply pipe and the secondary side first water supply pipe is interrupted, and the secondary side second water supply pipe passes through the secondary side second water supply pipe and the water storage A second state in which air can be introduced into the tank ,
Switching valve for switching in one of two states and is attached,
While always in the first state, tap water is taken from the tap, while in an emergency, the second state is taken and the secondary tank is inserted into the storage tank through the second water supply pipe. A tap water storage device configured to take tap water from the faucet by introducing air . 請求項１に記載の水道水貯水装置において、
前記二次側第二給水管と前記二次側第一給水管の接続箇所が前記給水栓の近辺となされ、且つ、前記二次側第二給水管に対する前記切替弁の取り付け位置が、前記接続箇所の近辺となされた水道水貯水装置。 In the tap water storage device according to claim 1,
The connection part of the secondary side second water supply pipe and the secondary side first water supply pipe is in the vicinity of the water tap, and the attachment position of the switching valve with respect to the secondary side second water supply pipe is the connection A tap water storage device in the vicinity of the site. 請求項１又は２に記載の水道水貯水装置において、
前記切替弁は、前記二次側第二給水管の上流側と接続される第一口部と、前記二次側第二給水管の下流側と接続される第二口部と、前記第二の状態で前記二次側第二給水管を通じて前記貯水タンク内に空気を導入可能な第三口部と、を有する三方弁である水道水貯水装置。 In the tap water storage device according to claim 1 or 2,
The switching valve includes a first port connected to an upstream side of the secondary side second water supply pipe, a second port connected to a downstream side of the secondary side second water supply pipe, and the second port A tap water storage device, which is a three-way valve, having a third port through which air can be introduced into the water storage tank through the secondary side second water supply pipe. 請求項１ないし３のいずれか１項に記載の水道水貯水装置において、
前記第一流出口が、前記貯水タンクの底部、又は底部近辺に設けられており、
前記第二流出口が、前記貯水タンクの頂部、又は頂部近辺に設けられてなる水道水貯水装置。 In the tap water storage device according to any one of claims 1 to 3,
The first outlet is provided at the bottom of the water storage tank, or near the bottom,
A tap water storage device in which the second outlet is provided at or near the top of the water storage tank. 請求項１ないし４のいずれか１項に記載の水道水貯水装置において、
前記貯水タンクの複数個と、
前記一次側給水管における前記逆止弁が備えられた位置より下流側に備えられた、前記一次側給水管を複数に分枝させるヘッダーと、
を具備してなり、
前記ヘッダーによって分枝された複数の一次側給水管の各々に対し、複数個の前記貯水タンクがそれぞれ個別に接続されてなる水道水貯水装置。 In the tap water storage device according to any one of claims 1 to 4,
A plurality of the water storage tanks;
A header provided on the downstream side from the position where the check valve is provided in the primary side water supply pipe, and a header for branching the primary side water supply pipe into a plurality of branches;
Comprising
A tap water storage apparatus in which a plurality of water storage tanks are individually connected to each of a plurality of primary side water supply pipes branched by the header. 請求項１ないし５のいずれか１項に記載の水道水貯水装置を用いて水道水を取水する水道水給水方法であって、
前記二次側第二給水管と前記二次側第一給水管との接続関係を前記第一の状態とした上で、前記給水栓から水道水を取水する常時取水工程、
および、前記二次側第二給水管と前記二次側第一給水管との接続関係を前記第二の状態とした上で、前記二次側第二給水管を通じて前記貯水タンク内に空気を導入し、もって、前記給水栓から水道水を取水する非常時取水工程、
のいずれかの工程を実行することによって水道水を取水することを特徴とする水道水給水方法。 A tap water supply method for taking tap water using the tap water storage device according to any one of claims 1 to 5,
A regular water intake step of taking tap water from the water tap after the connection state between the secondary side second water supply pipe and the secondary side first water supply pipe is in the first state,
And, on the connection relationship between the secondary side second water supply pipe and the secondary side first water supply pipe was set to the second state, the air in the water storage tank through the secondary side second water supply pipe Introducing an emergency water intake process for taking tap water from the water tap;
A tap water supply method characterized by taking tap water by executing any one of the steps.
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