JP6750171B2 - Drinking water server - Google Patents

Drinking water server Download PDF

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JP6750171B2
JP6750171B2 JP2016196110A JP2016196110A JP6750171B2 JP 6750171 B2 JP6750171 B2 JP 6750171B2 JP 2016196110 A JP2016196110 A JP 2016196110A JP 2016196110 A JP2016196110 A JP 2016196110A JP 6750171 B2 JP6750171 B2 JP 6750171B2
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JP2018058610A (en
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英朗 粟井
英朗 粟井
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MT. FUJI SPRINGS INC.
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Description

本発明は、飲料水サーバーに関する。 The present invention relates to drinking water servers.

飲料水サーバーは、ウォーターサーバーや飲料水ディスペンサー等と呼ばれている飲料水供給装置である。
飲料水サーバーは、温水を貯留する温水タンクと冷水を貯留する冷水タンクを備える。これらタンクに向けて飲料水ボトルから飲料水が供給され、各タンク内で飲料水が加熱または冷却される。
各タンクにはそれぞれ出水管が接続されて、出水管の先端に設けられたバルブ（出水弁）の操作によって各タンクに貯留された飲料水（温水、冷水）が取り出される。 The drinking water server is a drinking water supply device called a water server or a drinking water dispenser.
The drinking water server includes a hot water tank that stores hot water and a cold water tank that stores cold water. Drinking water is supplied from the drinking water bottle to these tanks, and the drinking water is heated or cooled in each tank.
A water outlet pipe is connected to each tank, and drinking water (hot water, cold water) stored in each tank is taken out by operating a valve (water outlet valve) provided at the tip of the water outlet pipe.

飲料水をタンクに貯留すると、雑菌が繁殖してしまうため、飲料水の殺菌を行う必要がある。
温水タンクと温水出水管路は、温水タンクで加熱された温水に触れているので、常に熱殺菌されている。このため、これらの配管系統をさらに殺菌する必要はない。
一方、飲料水ボトルに連結された原水管路や冷水タンク、冷水出水管路は、高温の温水に触れることはない。このため、これらの配管系統を熱殺菌する必要がある。
そこで、冷水タンクの冷水と温水タンクの温水を循環させて混合しつつ、温水タンクの加熱器で飲料水を加熱して熱殺菌する方法が用いられている。
例えば、特許文献１には、飲料水サーバーを熱殺菌する構成が記載されている。 If drinking water is stored in a tank, various bacteria will propagate, so it is necessary to sterilize drinking water.
The hot water tank and the hot water outlet pipe line are in contact with the hot water heated in the hot water tank, and thus are always heat-sterilized. Therefore, it is not necessary to further sterilize these piping systems.
On the other hand, the raw water pipeline, the cold water tank, and the cold water outlet pipeline connected to the drinking water bottle do not come into contact with hot hot water. Therefore, it is necessary to heat sterilize these piping systems.
Therefore, a method is used in which cold water in a cold water tank and hot water in a hot water tank are circulated and mixed, while drinking water is heated and sterilized by heating with a heater in the hot water tank.
For example, Patent Document 1 describes a configuration in which a drinking water server is heat-sterilized.

特開２０１５−１４７５９３号公報Japanese Patent Laid-Open No. 2015-147593

飲料水サーバーから取り出される飲料水として、温水と冷水の他に、外気温に近い温度（水温）の常温水を利用したいとの要望がある。
常温水は、直接飲んだときに、冷水に比べて胃腸への負担が少ない。また、常温水は、料理や炊飯に使用しやすいという利点がある。 As drinking water extracted from the drinking water server, in addition to hot water and cold water, there is a demand to use room temperature water having a temperature (water temperature) close to the outside air temperature.
Normal temperature water has less burden on the gastrointestinal tract compared to cold water when it is drunk directly. Further, room temperature water has an advantage that it is easy to use for cooking and cooking rice.

しかし、温水、冷水および常温水を出水できる飲料水サーバーは殆どない。さらに、温水配管系統、冷水配管系統および常温水配管系統を殺菌できるものはない。 However, there are few drinking water servers that can discharge hot water, cold water, and room temperature water. Further, nothing can sterilize the hot water piping system, the cold water piping system and the room temperature water piping system.

本発明は、温水、冷水および常温水を出水すると共に、各種配管を確実に熱殺菌できる飲料水サーバーを提供することを目的とする。 An object of the present invention is to provide hot water, cold water, and room temperature water, and to provide a drinking water server that can reliably heat sterilize various pipes.

上述した課題を解決するため、本発明は、以下の手段を採用した。
本発明の飲料水サーバーの第一実施態様は、飲料水が充填された原水容器が着脱する連結部と、前記飲料水を冷却する冷却器を有し、冷水と常温水を貯留する冷水タンクと、前記飲料水を加熱する加熱器を有し、温水を貯留する温水タンクと、前記連結部に連通して、前記原水容器に充填された飲料水を下流分岐弁まで通水する第一原水供給管と、前記下流分岐弁から前記冷水タンクの上部に向けて配管される第二原水供給管と、前記下流分岐弁から前記温水タンクの下部に向けて配管される第三原水供給管と、前記冷水タンクの下部に連通して、冷水を冷水出水弁まで通水する冷水出水管と、前記冷水タンクの上部に連通して、常温水を常温水出水弁まで通水する常温水出水管と、前記温水タンクに連通して、温水を温水出水弁まで通水する温水出水管と、前記第一原水供給管の上流側で上流分岐弁を介して分岐して、飲料水を返水分岐弁まで通水する第一返水管と、前記返水分岐弁から前記常温水出水管に向けて配管される第二返水管と、前記返水分岐弁から前記冷水出水管に向けて配管される第三返水管と、前記常温水出水管の上流側と前記温水出水管の下流側を連通する第四返水管と、前記冷水タンクまたは前記温水タンクの少なくとも一方に貯留された飲料水を、前記第一返水管、前記第二返水管、前記第三返水管、前記第四返水管を介して循環させるポンプと、を備え、前記温水タンク、前記第三原水供給管、前記第一原水供給管、前記第一返水管、前記第二返水管、前記常温水出水管、前記第四返水管、前記温水出水管に飲料水を通水させる第一循環状態と、前記温水タンク、前記第三原水供給管、前記第一原水供給管、前記第一返水管、前記第三返水管、前記冷水出水管、前記冷水タンク、前記常温水出水管、前記第四返水管、前記温水出水管に飲料水を通水させる第二循環状態と、前記冷水タンク、前記常温水出水管、前記第二返水管、前記第一返水管、前記第一原水供給管、前記第二原水供給管に飲料水を通水させる第三循環状態と、を有することを特徴とする。 In order to solve the above problems, the present invention employs the following means.
A first embodiment of a drinking water server of the present invention has a connection part for attaching and detaching a raw water container filled with drinking water, a cooler for cooling the drinking water, and a cold water tank for storing cold water and normal temperature water. A first raw water supply which has a heater for heating the drinking water, communicates with the hot water tank for storing hot water, and the connecting portion, and passes the drinking water filled in the raw water container to a downstream branch valve A pipe, a second raw water supply pipe piped from the downstream branch valve toward the upper part of the cold water tank, and a third raw water supply pipe piped from the downstream branch valve toward the lower part of the hot water tank, A cold water outlet pipe communicating with the lower portion of the cold water tank to pass cold water to the cold water outlet valve, and a normal temperature water outlet pipe communicating with the upper portion of the cold water tank to pass normal temperature water to the normal temperature water outlet valve. , A hot water outlet pipe communicating with the hot water tank to pass hot water to a hot water outlet valve, and a branch via an upstream branch valve upstream of the first raw water supply pipe to return drinking water A first return pipe through which water is passed, a second return pipe piped from the return water branch valve toward the normal temperature water outlet pipe, and a second return pipe piped from the return water branch valve toward the cold water outlet pipe Three return water pipes, a fourth return pipe communicating the upstream side of the room temperature water outflow pipe and the downstream side of the hot water outflow pipe, and drinking water stored in at least one of the cold water tank or the hot water tank, A first water return pipe, the second water return pipe, the third water return pipe, and a pump that circulates through the fourth water return pipe, the hot water tank, the third raw water supply pipe, the first raw water supply pipe , The first return pipe, the second return pipe, the room temperature water outlet pipe, the fourth return pipe, the first circulation state for passing drinking water to the hot water outlet pipe, the hot water tank, the third raw Beverage to the water supply pipe, the first raw water supply pipe, the first return pipe, the third return pipe, the cold water outlet pipe, the cold water tank, the room temperature water outlet pipe, the fourth return pipe, the hot water outlet pipe A second circulation state for passing water, the cold water tank, the normal temperature water outlet pipe, the second return pipe, the first return pipe, the first raw water supply pipe, the second raw water supply pipe drinking water And a third circulation state of passing water.

本発明の飲料水サーバーの第二実施態様は、第一実施態様において、前記ポンプは、前記第一原水供給管に配置された第一非容積式ポンプと、前記第三原水供給管に配置された第二非容積式ポンプと、からなることを特徴とする。 A second embodiment of the drinking water server of the present invention is the first embodiment, wherein the pump is disposed in the first raw water supply pipe, and the first non-positive displacement pump is disposed in the third raw water supply pipe. And a second non-displacement type pump which is operated.

本発明の飲料水サーバーの第三実施態様は、第一実施態様において、前記ポンプは、前記第一原水供給管に配置された容積式ポンプからなることを特徴とする。 A third embodiment of the drinking water server of the present invention is characterized in that, in the first embodiment, the pump comprises a positive displacement pump arranged in the first raw water supply pipe.

本発明の飲料水サーバーの第四実施態様は、第一実施態様において、前記ポンプは、前記第一返水管に配置された第三非容積式ポンプからなり、前記原水容器に充填された飲料水が水頭差により前記冷水タンクと前記温水タンクに供給されることを特徴とする。 A fourth embodiment of the drinking water server of the present invention is, in the first embodiment, the pump comprising a third non-positive displacement pump arranged in the first return pipe, and the drinking water filled in the raw water container. Is supplied to the cold water tank and the hot water tank by a water head difference.

本発明の飲料水サーバーの第五実施態様は、第一から第四実施態様のいずれかにおいて、前記第一循環状態、前記第二循環状態、前記第三循環状態の順に飲料水を通水することを特徴とする。 A fifth embodiment of the drinking water server of the present invention, in any one of the first to fourth embodiments, passes drinking water in the order of the first circulation state, the second circulation state, and the third circulation state. It is characterized by

本発明の飲料水サーバーの第六実施態様は、第一から第四実施態様のいずれかにおいて、前記第二循環状態、前記第三循環状態、前記第一循環状態の順に飲料水を通水することを特徴とする。 A sixth embodiment of the drinking water server of the present invention, in any one of the first to fourth embodiments, passes the drinking water in the order of the second circulation state, the third circulation state, and the first circulation state. It is characterized by

本発明の飲料水サーバーの第七実施態様は、飲料水が充填された原水容器が着脱する連結部と、前記飲料水を冷却する冷却器を有し、冷水と常温水を貯留する冷水タンクと、前記飲料水を加熱する加熱器を有し、温水を貯留する温水タンクと、前記連結部に連通して、前記原水容器に充填された飲料水を下流分岐弁まで通水する第一原水供給管と、前記下流分岐弁から前記冷水タンクの上部に向けて配管される第二原水供給管と、前記下流分岐弁から前記温水タンクの下部に向けて配管される第三原水供給管と、前記冷水タンクの下部に連通して、冷水を冷水出水弁まで通水する冷水出水管と、前記冷水タンクの上部に連通して、常温水を常温水出水弁まで通水する常温水出水管と、前記温水タンクに連通して、温水を温水出水弁まで通水する温水出水管と、前記第一原水供給管の上流側で上流分岐弁を介して分岐して、飲料水を返水分岐弁まで通水する第一返水管と、前記返水分岐弁から前記常温水出水管に向けて配管される第二返水管と、前記返水分岐弁から前記冷水出水管に向けて配管される第三返水管と、前記常温水出水管の上流側と前記温水出水管の下流側を連通する第四返水管と、前記冷水タンクまたは前記温水タンクの少なくとも一方に貯留された飲料水を、前記第一返水管、前記第二返水管、前記第三返水管、前記第四返水管を介して循環させるポンプと、を備え、前記温水タンク、前記第三原水供給管、前記第一原水供給管、前記第一返水管、前記第二返水管、前記常温水出水管、前記第四返水管、前記温水出水管に飲料水を通水させる第一循環状態を有することを特徴とする。 A seventh embodiment of the drinking water server of the present invention has a connection part for attaching and detaching a raw water container filled with drinking water, a cooler for cooling the drinking water, and a cold water tank for storing cold water and normal temperature water. A first raw water supply which has a heater for heating the drinking water, communicates with the hot water tank for storing hot water, and the connecting portion, and passes the drinking water filled in the raw water container to a downstream branch valve A pipe, a second raw water supply pipe piped from the downstream branch valve toward the upper part of the cold water tank, and a third raw water supply pipe piped from the downstream branch valve toward the lower part of the hot water tank, A cold water outlet pipe communicating with the lower portion of the cold water tank to pass cold water to the cold water outlet valve, and a normal temperature water outlet pipe communicating with the upper portion of the cold water tank to pass normal temperature water to the normal temperature water outlet valve. , A hot water outlet pipe communicating with the hot water tank to pass hot water to a hot water outlet valve, and a branch via an upstream branch valve upstream of the first raw water supply pipe to return drinking water A first return pipe through which water is passed, a second return pipe piped from the return water branch valve toward the normal temperature water outlet pipe, and a second return pipe piped from the return water branch valve toward the cold water outlet pipe Three return water pipes, a fourth return pipe communicating the upstream side of the room temperature water outflow pipe and the downstream side of the hot water outflow pipe, and drinking water stored in at least one of the cold water tank or the hot water tank, A first water return pipe, the second water return pipe, the third water return pipe, and a pump that circulates through the fourth water return pipe, the hot water tank, the third raw water supply pipe, the first raw water supply pipe , The first return pipe, the second return pipe, the room temperature water outlet pipe, the fourth water return pipe, and the hot water outlet pipe have a first circulation state for passing drinking water.

本発明の飲料水サーバーの第八実施態様は、飲料水が充填された原水容器が着脱する連結部と、前記飲料水を冷却する冷却器を有し、冷水と常温水を貯留する冷水タンクと、前記飲料水を加熱する加熱器を有し、温水を貯留する温水タンクと、前記連結部に連通して、前記原水容器に充填された飲料水を下流分岐弁まで通水する第一原水供給管と、前記下流分岐弁から前記冷水タンクの上部に向けて配管される第二原水供給管と、前記下流分岐弁から前記温水タンクの下部に向けて配管される第三原水供給管と、前記冷水タンクの下部に連通して、冷水を冷水出水弁まで通水する冷水出水管と、前記冷水タンクの上部に連通して、常温水を常温水出水弁まで通水する常温水出水管と、前記温水タンクに連通して、温水を温水出水弁まで通水する温水出水管と、前記第一原水供給管の上流側で上流分岐弁を介して分岐して、飲料水を返水分岐弁まで通水する第一返水管と、前記返水分岐弁から前記常温水出水管に向けて配管される第二返水管と、前記返水分岐弁から前記冷水出水管に向けて配管される第三返水管と、前記常温水出水管の上流側と前記温水出水管の下流側を連通する第四返水管と、前記冷水タンクまたは前記温水タンクの少なくとも一方に貯留された飲料水を、前記第一返水管、前記第二返水管、前記第三返水管、前記第四返水管を介して循環させるポンプと、を備え、前記温水タンク、前記第三原水供給管、前記第一原水供給管、前記第一返水管、前記第三返水管、前記冷水出水管、前記冷水タンク、前記常温水出水管、前記第四返水管、前記温水出水管に飲料水を通水させる第二循環状態を有することを特徴とする。 An eighth embodiment of the drinking water server of the present invention has a connection part for attaching and detaching a raw water container filled with drinking water, a cooler for cooling the drinking water, and a cold water tank for storing cold water and normal temperature water. A first raw water supply which has a heater for heating the drinking water, communicates with the hot water tank for storing hot water, and the connecting portion, and passes the drinking water filled in the raw water container to a downstream branch valve A pipe, a second raw water supply pipe piped from the downstream branch valve toward the upper part of the cold water tank, and a third raw water supply pipe piped from the downstream branch valve toward the lower part of the hot water tank, A cold water outlet pipe communicating with the lower portion of the cold water tank to pass cold water to the cold water outlet valve, and a normal temperature water outlet pipe communicating with the upper portion of the cold water tank to pass normal temperature water to the normal temperature water outlet valve. , A hot water outlet pipe communicating with the hot water tank to pass hot water to a hot water outlet valve, and a branch via an upstream branch valve upstream of the first raw water supply pipe to return drinking water A first return pipe through which water is passed, a second return pipe piped from the return water branch valve toward the normal temperature water outlet pipe, and a second return pipe piped from the return water branch valve toward the cold water outlet pipe Three return water pipes, a fourth return pipe communicating the upstream side of the room temperature water outflow pipe and the downstream side of the hot water outflow pipe, and drinking water stored in at least one of the cold water tank or the hot water tank, A first water return pipe, the second water return pipe, the third water return pipe, and a pump that circulates through the fourth water return pipe, the hot water tank, the third raw water supply pipe, the first raw water supply pipe , The first return pipe, the third return pipe, the cold water outlet pipe, the cold water tank, the room temperature water outlet pipe, the fourth return pipe, the second circulation state for passing drinking water to the hot water outlet pipe It is characterized by having.

本発明の飲料水サーバーは、温水、冷水および常温水を出水すると共に、各種配管を確実に熱殺菌できる。 INDUSTRIAL APPLICABILITY The drinking water server of the present invention can discharge hot water, cold water, and room temperature water, and reliably heat-sterilize various pipes.

本発明の実施形態に係る飲料水サーバー１の概略構成を示す図である。It is a figure which shows schematic structure of the drinking water server 1 which concerns on embodiment of this invention. 冷水タンク充填、温水タンク充填を示す図である。It is a figure which shows cold water tank filling and hot water tank filling. 第一循環状態を示す図である。It is a figure which shows a 1st circulation state. 第二循環状態を示す図である。It is a figure which shows a 2nd circulation state. 冷水出水、常温水出水、温水出水を示す図である。It is a figure which shows cold water discharge, normal temperature water discharge, and warm water discharge. 第三循環状態を示す図である。It is a figure which shows a 3rd circulation state. 冷水出水前循環を示す図である。It is a figure which shows the circulation before cold water discharge.

〔飲料水サーバー１の全体構成〕
本発明の実施形態に係る飲料水サーバー１について、図面を参照して説明する。なお、各図面は模式図であり、タンクや配管等は、寸法・割合・角度が正確に描かれているとは限らない。 [Overall structure of drinking water server 1]
A drinking water server 1 according to an embodiment of the present invention will be described with reference to the drawings. It should be noted that the drawings are schematic views, and the dimensions, proportions, and angles of the tanks, pipes, etc. are not always drawn accurately.

図１は、飲料水サーバー１の概略構成を示す模式図である。
飲料水サーバー１は、いわゆるエアレスタイプのウォーターサーバーであり、飲料水ボトル５に充填された飲料水Ｗを給水部７から出水する。飲料水サーバー１は、水頭差を用いずに、第一ポンプ４１を用いて飲料水Ｗを出水する。 FIG. 1 is a schematic diagram showing a schematic configuration of the drinking water server 1.
The drinking water server 1 is a so-called airless type water server, and the drinking water W filled in the drinking water bottle 5 is discharged from the water supply unit 7. The drinking water server 1 outputs the drinking water W using the first pump 41 without using the head difference.

飲料水Ｗが飲料水ボトル５からタンク２，４を経て給水部７に向けて流れる方向を正方向という。飲料水ボトル５側を上流、給水部７側を下流という。
飲料水Ｗが給水部７からタンク２，４を経て飲料水ボトル５に向けて流れる方向を反方向という。 The direction in which the drinking water W flows from the drinking water bottle 5 through the tanks 2 and 4 toward the water supply unit 7 is called the forward direction. The drinking water bottle 5 side is called upstream and the water supply unit 7 side is called downstream.
The direction in which the drinking water W flows from the water supply unit 7 through the tanks 2 and 4 toward the drinking water bottle 5 is called the counter direction.

飲料水サーバー１は、冷水Ｃを貯留する冷水タンク２、温水Ｈを貯留する温水タンク４を備える。これらタンク２，４がサーバーハウジング（不図示）に収容される。
冷水タンク２と温水タンク４は、それぞれ断熱材（不図示）で覆われて、サーバーハウジングの上下方向のほぼ中央に配置される。温水タンク４がサーバーハウジングの前方側に、冷水タンク２がサーバーハウジングの後方側に配置される。 The drinking water server 1 includes a cold water tank 2 that stores cold water C and a hot water tank 4 that stores hot water H. These tanks 2 and 4 are housed in a server housing (not shown).
The cold water tank 2 and the hot water tank 4 are respectively covered with a heat insulating material (not shown), and are arranged substantially at the center in the vertical direction of the server housing. The hot water tank 4 is arranged on the front side of the server housing, and the cold water tank 2 is arranged on the rear side of the server housing.

サーバーハウジングの最下部には、飲料水Ｗ（常温水Ｎ）が充填された飲料水ボトル５が着脱可能に配置される。飲料水ボトル（原水容器）５は、いわゆるクラッシャブルボトルであって、例えばＰＥＴにより成型される。
サーバーハウジングの底面中央には、飲料水ボトル５が装着される連結部６が設けられる。飲料水ボトル５を上下逆さにして、飲料水ボトル５の口部を連結部６に嵌め入れることにより、サーバーハウジングに飲料水ボトル５が装着される。 A drinking water bottle 5 filled with drinking water W (normal temperature water N) is detachably arranged at the bottom of the server housing. The drinking water bottle (raw water container) 5 is a so-called crushable bottle, and is molded by PET, for example.
A connecting portion 6 to which the drinking water bottle 5 is attached is provided in the center of the bottom surface of the server housing. The drinking water bottle 5 is turned upside down and the mouth of the drinking water bottle 5 is fitted into the connecting portion 6, whereby the drinking water bottle 5 is mounted in the server housing.

サーバーハウジングの前面には、飲料水Ｗ（冷水Ｃ、温水Ｈ、常温水Ｎ）を受け取る給水部７が設けられ、冷水Ｃ、温水Ｈ、常温水Ｎの出水口８が配置される。
出水口８は、後述する常温水出水管２１、冷水出水管２３、温水出水管２５に連通する。言い換えれば、常温水出水管２１、冷水出水管２３、温水出水管２５が合流して、出水口８に接続する。
出水口８を１つ設けるのではなく、３つの出水口（常温水出水口、冷水出水口、温水用出水口）を設けてもよい。 A water supply unit 7 for receiving drinking water W (cold water C, hot water H, normal temperature water N) is provided on the front surface of the server housing, and outlets 8 for the cold water C, hot water H, and normal temperature water N are arranged.
The water outlet 8 communicates with a room temperature water outlet pipe 21, a cold water outlet pipe 23, and a hot water outlet pipe 25, which will be described later. In other words, the room temperature water outlet pipe 21, the cold water outlet pipe 23, and the hot water outlet pipe 25 join and are connected to the outlet 8.
Instead of providing one water outlet 8, three water outlets (normal temperature water outlet, cold water outlet, hot water outlet) may be provided.

給水部７の上方には、利用者が各種操作を行うための操作パネル（不図示）が設けられる。この操作パネルには、冷水出水ボタンや温水出水ボタン、常温水出水ボタン、熱殺菌ボタン等が配設される。 An operation panel (not shown) for the user to perform various operations is provided above the water supply unit 7. The operation panel is provided with a cold water discharge button, a hot water discharge button, a room temperature water discharge button, a heat sterilization button, and the like.

冷水タンク２は、ステンレス製の容器であり、内部に貯留された飲料水Ｗを冷却する冷却器（不図示）が付設される。冷却器は、側壁の下方側に沿って配置される。冷却器には、コンプレッサー方式、ペルチェ方式等が用いれられる。冷却器は、コントローラ（不図示）によって制御される。 The cold water tank 2 is a container made of stainless steel, and is provided with a cooler (not shown) for cooling the drinking water W stored therein. The cooler is arranged along the lower side of the side wall. A compressor method, a Peltier method, or the like is used for the cooler. The cooler is controlled by a controller (not shown).

冷水タンク２の上部側には、冷水タンク２の内部を上下に区画するセパレーター３が配置される。セパレーター３は、水平方向に拡がる板部材であり、冷水タンク２に貯留された飲料水Ｗの上下方向における対流を阻害する。つまり、セパレーター３は、冷水タンク２の上部側に貯留された飲料水Ｗと下部側に貯留された飲料水Ｗの混合をしづらくする。これにより、冷水タンク２は、上部側に常温水Ｎを、下部側に冷水Ｃを貯留することができる。 On the upper side of the cold water tank 2, a separator 3 that divides the interior of the cold water tank 2 into upper and lower parts is arranged. The separator 3 is a plate member that expands in the horizontal direction, and blocks the vertical convection of the drinking water W stored in the cold water tank 2. That is, the separator 3 makes it difficult to mix the drinking water W stored on the upper side of the cold water tank 2 and the drinking water W stored on the lower side. Thereby, the cold water tank 2 can store the room temperature water N on the upper side and the cold water C on the lower side.

冷水タンク２の上部には、冷水タンク２に飲料水Ｗを注水する第二原水供給管１４が接続される。この第二原水供給管１４は、下流分岐弁１２を介して、連結部６に連通する第一原水供給管１１に接続される。
下流分岐弁１２は、冷水タンク２の近傍に配置される。
したがって、冷水タンク２には、飲料水ボトル５に充填された飲料水Ｗ（常温水Ｎ）が、連結部６から第一原水供給管１１、下流分岐弁１２、第二原水供給管１４を介して注水される。 A second raw water supply pipe 14 for injecting the drinking water W into the cold water tank 2 is connected to the upper portion of the cold water tank 2. The second raw water supply pipe 14 is connected to the first raw water supply pipe 11 communicating with the connecting portion 6 via the downstream branch valve 12.
The downstream branch valve 12 is arranged near the cold water tank 2.
Therefore, in the cold water tank 2, the drinking water W (normal temperature water N) filled in the drinking water bottle 5 is passed from the connecting portion 6 through the first raw water supply pipe 11, the downstream branch valve 12, and the second raw water supply pipe 14. Is poured.

また、冷水タンク２には、常温水出水管２１と冷水出水管２３が接続される。
常温水出水管２１は、セパレーター３よりも上方で開口し、給水部７の出水口８に連通する。常温水出水管２１の最下流には、常温水出水弁２２が配置される。この常温水出水弁２２を開くことにより、常温水出水管２１を介して、冷水タンク２の上部に貯留された飲料水Ｗ（常温水Ｎ）が出水口８から出水される。
冷水出水管２３は、セパレーター３よりも下方で開口し、給水部７の出水口８に連通する。冷水出水管２３の最下流には、冷水出水弁２４が配置される。この冷水出水弁２４を開くことにより、冷水出水管２３を介して、冷水タンク２の下部に貯留された飲料水Ｗ（冷水Ｃ）が出水口８から出水される。 Further, the cold water tank 2 is connected with a normal temperature water outlet pipe 21 and a cold water outlet pipe 23.
The room-temperature water outlet pipe 21 opens above the separator 3 and communicates with the outlet 8 of the water supply unit 7. A room temperature water discharge valve 22 is arranged at the most downstream side of the room temperature water discharge pipe 21. By opening the normal temperature water discharge valve 22, the drinking water W (normal temperature water N) stored in the upper portion of the cold water tank 2 is discharged from the discharge port 8 through the normal temperature water discharge pipe 21.
The cold water outlet pipe 23 opens below the separator 3 and communicates with the outlet 8 of the water supply unit 7. A cold water discharge valve 24 is arranged at the most downstream side of the cold water discharge pipe 23. By opening the cold water discharge valve 24, the drinking water W (cold water C) stored in the lower portion of the cold water tank 2 is discharged from the water outlet 8 via the cold water discharge pipe 23.

温水タンク４は、ステンレス製の密閉容器であり、内部に貯留された飲料水Ｗを加熱する加熱器（不図示）が付設される。加熱器には、シーズヒーターやバンドヒーター等が用いられる。加熱器は、コントローラ（不図示）によって制御される。
加熱器は、温水タンク４の外部に配置されてもよい。 The warm water tank 4 is a closed container made of stainless steel, and is provided with a heater (not shown) for heating the drinking water W stored therein. A sheath heater, a band heater, or the like is used for the heater. The heater is controlled by a controller (not shown).
The heater may be arranged outside the hot water tank 4.

温水タンク４には、第三原水供給管１５と温水出水管２５が接続される。
第三原水供給管１５は、下流分岐弁１２に接続される。つまり、下流分岐弁１２を介して、連結部６に連通する第一原水供給管１１に接続される。
したがって、温水タンク４には、飲料水ボトル５に充填された飲料水Ｗ（常温水Ｎ）が、連結部６から第一原水供給管１１、下流分岐弁１２、第三原水供給管１５を介して注水される。
温水出水管２５は、温水タンク４の上部で開口し、給水部７の出水口８に連通する。温水出水管２５の最下流には、温水出水弁２６が配置される。この温水出水弁２６を開くことにより、温水出水管２５を介して、温水タンク４に貯留された飲料水Ｗ（温水Ｈ）が出水口８から出水される。 A third raw water supply pipe 15 and a hot water outlet pipe 25 are connected to the hot water tank 4.
The third raw water supply pipe 15 is connected to the downstream branch valve 12. That is, it is connected to the first raw water supply pipe 11 communicating with the connecting portion 6 via the downstream branch valve 12.
Therefore, in the hot water tank 4, the drinking water W (normal temperature water N) filled in the drinking water bottle 5 is supplied from the connecting portion 6 to the first raw water supply pipe 11, the downstream branch valve 12, and the third raw water supply pipe 15. Is poured through.
The hot water outlet pipe 25 opens at the upper part of the hot water tank 4 and communicates with the water outlet 8 of the water supply unit 7. A hot water outlet valve 26 is arranged at the most downstream side of the hot water outlet pipe 25. By opening the hot water outlet valve 26, the drinking water W (warm water H) stored in the hot water tank 4 is discharged from the water outlet 8 via the hot water outlet pipe 25.

常温水出水弁２２、冷水出水弁２４および温水出水弁２６は、電磁式開閉制御弁であって、操作パネルの常温水出水ボタンや冷水出水ボタン、温水出水ボタンの操作に従って作動する。
常温水出水弁２２、冷水出水弁２４および温水出水弁２６は、手動式開閉弁であってもよい。この場合は、常温水出水ボタン、冷水出水ボタンおよび温水出水ボタンは不要となる。 The room temperature water outlet valve 22, the cold water outlet valve 24, and the hot water outlet valve 26 are electromagnetic on-off control valves, and operate according to the operation of the room temperature water outlet button, the cold water outlet button, and the hot water outlet button on the operation panel.
The normal temperature water outlet valve 22, the cold water outlet valve 24, and the hot water outlet valve 26 may be manual on-off valves. In this case, the room temperature water outflow button, the cold water outflow button, and the hot water outflow button are unnecessary.

飲料水サーバー１は、上述したタンクや配管に滞留した飲料水Ｗを、定期的または不定期に循環させる返水路（第一返水管３１、第二返水管３２、第三返水管３３、第四返水管３４）を備える。
第一返水管３１は、第一原水供給管１１の上流側（連結部６の近傍）で上流分岐弁１３を介して分岐して、給水部７に向けて延びる。第一返水管３１の端部には、返水分岐弁３５が接続される。
第二返水管３２は、返水分岐弁３５から常温水出水管２１の下流側（常温水出水弁２２よりも上流）に連通する。
第三返水管３３は、返水分岐弁３５から冷水出水管２３の下流側（冷水出水弁２４よりも上流）に連通する。
第四返水管３４は、常温水出水管２１の上流側（冷水タンク２の近傍）と温水出水管２５の下流側（温水出水弁２６よりも上流）に連通する The drinking water server 1 is a return water channel (first return pipe 31, second return pipe 32, third return pipe 33, fourth) that circulates the drinking water W accumulated in the above-mentioned tank or pipe regularly or irregularly. A return pipe 34) is provided.
The first return water pipe 31 branches on the upstream side of the first raw water supply pipe 11 (in the vicinity of the connecting portion 6) via the upstream branch valve 13 and extends toward the water supply portion 7. A return water branch valve 35 is connected to an end of the first return water pipe 31.
The second return water pipe 32 communicates from the return water branch valve 35 to the downstream side of the ambient temperature water outlet pipe 21 (upstream of the ambient temperature water outlet valve 22).
The third return water pipe 33 communicates from the return water branch valve 35 to the downstream side of the cold water outlet pipe 23 (upstream of the cold water outlet valve 24).
The fourth return pipe 34 communicates with the upstream side of the room temperature water outlet pipe 21 (near the cold water tank 2) and the downstream side of the hot water outlet pipe 25 (upstream of the hot water outlet valve 26).

飲料水サーバー１は、ポンプ４１，４２を備え、飲料水Ｗを冷水タンク２や温水タンク４に注水したり、給水部７から出水したりする。
また、ポンプ４１，４２は、飲料水Ｗを各種配管に循環（通水）させる。すなわち、ポンプ４１，４２は、冷水タンク２または温水タンク４の少なくとも一方に貯留された飲料水Ｗを、返水路（第一返水管３１、第二返水管３２、第三返水管３３、第四返水管３４）を介して循環させる。 The drinking water server 1 includes pumps 41 and 42, and injects the drinking water W into the cold water tank 2 or the hot water tank 4 or discharges the water from the water supply unit 7.
Further, the pumps 41 and 42 circulate (pass water) the drinking water W through various pipes. That is, the pumps 41 and 42 supply the drinking water W stored in at least one of the cold water tank 2 and the hot water tank 4 to the return passage (first return pipe 31, second return pipe 32, third return pipe 33, and fourth return pipe). It is circulated through the return pipe 34).

第一ポンプ（第一非容積式ポンプ）４１は、非容積型ポンプであって、第一原水供給管１１に配置される。具体的には、第一ポンプ４１は、渦巻ポンプであって、下流分岐弁１２と上流分岐弁１３の間に配置される。第一ポンプ４１は、連結部６の近傍に配置される。第一ポンプ４１は、飲料水Ｗを下流分岐弁１２に向かう方向（正方向）に送水することができる。第一ポンプ４１は、停止時には、飲料水Ｗを通水させる（飲料水Ｗが正方向と反方向に通水する）。 The first pump (first non-volumetric pump) 41 is a non-volumetric pump and is arranged in the first raw water supply pipe 11. Specifically, the first pump 41 is a centrifugal pump and is arranged between the downstream branch valve 12 and the upstream branch valve 13. The first pump 41 is arranged near the connecting portion 6. The first pump 41 can send the drinking water W in the direction toward the downstream branch valve 12 (forward direction). When stopped, the first pump 41 allows the drinking water W to pass (the drinking water W passes in the forward direction and the reverse direction).

第二ポンプ（第二非容積式ポンプ）４２は、非容積型ポンプであって、第三原水供給管１５に配置される。具体的には、第二ポンプ４２は、渦巻ポンプであって、温水タンク４の下方に配置される。第二ポンプ４２は、飲料水Ｗ（温水Ｈ）を下流分岐弁１２に向かう方向（反方向）に送水できる。第二ポンプ４２は、停止時には、飲料水Ｗを通水させる（飲料水Ｗが正方向と反方向に通水する）。 The second pump (second non-volumetric pump) 42 is a non-volumetric pump and is arranged in the third raw water supply pipe 15. Specifically, the second pump 42 is a centrifugal pump and is arranged below the hot water tank 4. The second pump 42 can send the drinking water W (warm water H) in the direction toward the downstream branch valve 12 (opposite direction). When stopped, the second pump 42 allows the drinking water W to pass (the drinking water W passes in the forward direction and the reverse direction).

次に、飲料水サーバー１の動作について説明する。
飲料水充填、エア除去、衛生循環、熱殺菌、簡易熱殺菌、冷水出水循環について説明する。
なお、飲料水サーバー１は、定常状態において、上流分岐弁１３が第一原水供給管１１同士を連通し、下流分岐弁１２が第一原水供給管１１と第二原水供給管１４を連通し、返水分岐弁３５が第一返水管３１と第三返水管３３を連通する（図５（ａ）、（ｂ）参照）。 Next, the operation of the drinking water server 1 will be described.
Drinking water filling, air removal, sanitary circulation, heat sterilization, simple heat sterilization, cold water discharge circulation will be described.
In the steady state of the drinking water server 1, the upstream branch valve 13 communicates the first raw water supply pipes 11 with each other, and the downstream branch valve 12 communicates the first raw water supply pipe 11 with the second raw water supply pipe 14. The return water branch valve 35 connects the first return pipe 31 and the third return pipe 33 (see FIGS. 5A and 5B).

〔飲料水充填〕
飲料水サーバー１を使用開始するときは、まず、飲料水ボトル５から冷水タンク２や温水タンク４等に飲料水Ｗを充填する。
飲料水充填は、冷水タンク充填、温水タンク充填、第一返水管充填、第三返水管充填、冷水出水、常温水出水、温水出水の順に行う。 [Filling water filling]
When starting to use the drinking water server 1, first, the cold water tank 2, the hot water tank 4 and the like are filled with the drinking water W from the drinking water bottle 5.
Drinking water filling is performed in the order of cold water tank filling, hot water tank filling, first return pipe filling, third return pipe filling, cold water discharge, normal temperature water discharge, and hot water discharge water.

（冷水タンク充填）
図２（ａ）に示すように、冷水タンク充填では、定常状態で第一ポンプ４１を回転させる。そして、冷水出水弁２４を開け、常温水出水弁２２を閉じて、飲料水ボトル５の飲料水Ｗを、第一原水供給管１１と第二原水供給管１４を介して、冷水タンク２に向けて送水する。
所定時間（冷水タンク２に飲料水Ｗが充填される時間）が経過したら、冷水出水弁２４を閉じて、第一ポンプ４１を停止させる。 (Cold water tank filling)
As shown in FIG. 2A, in the cold water tank filling, the first pump 41 is rotated in a steady state. Then, the cold water outlet valve 24 is opened, the room temperature water outlet valve 22 is closed, and the drinking water W of the drinking water bottle 5 is directed to the cold water tank 2 via the first raw water supply pipe 11 and the second raw water supply pipe 14. To send water.
When a predetermined time (time for filling the cold water tank 2 with the drinking water W) has elapsed, the cold water discharge valve 24 is closed and the first pump 41 is stopped.

（温水タンク充填）
図２（ｂ）に示すように、温水タンク充填では、定常状態から下流分岐弁１２を切り替えて、第一ポンプ４１を正回転させる。そして、温水出水弁２６を開けて、飲料水ボトル５の飲料水Ｗを、第一原水供給管１１と第三原水供給管１５を介して、温水タンク４に向けて送水する。
所定時間（温水タンク４に飲料水Ｗが充填される時間）が経過したら、温水出水弁２６を閉じて、第一ポンプ４１を停止させる。 (Hot water tank filling)
As shown in FIG. 2B, in filling the hot water tank, the downstream branch valve 12 is switched from the steady state to rotate the first pump 41 in the forward direction. Then, the hot water outlet valve 26 is opened to supply the drinking water W of the drinking water bottle 5 to the hot water tank 4 through the first raw water supply pipe 11 and the third raw water supply pipe 15.
After a lapse of a predetermined time (time for filling the hot water tank 4 with the drinking water W), the hot water outlet valve 26 is closed and the first pump 41 is stopped.

（第一返水管充填：第一循環状態）
図３に示すように。第一返水管充填では、温水タンク充填の状態から上流分岐弁１３と返水分岐弁３５を切り替えて、第二ポンプ４２を回転させる。温水タンク４に充填された飲料水Ｗを、第三原水供給管１５、第一原水供給管１１、第一返水管３１、第二返水管３２、常温水出水管２１、第四返水管３４、温水出水管２５を介して、再び温水タンク４に戻す。 (Filling the first return pipe: First circulation state)
As shown in FIG. In the filling of the first return water pipe, the upstream branch valve 13 and the return water branch valve 35 are switched from the state of filling the hot water tank to rotate the second pump 42. The drinking water W filled in the warm water tank 4 is supplied with the third raw water supply pipe 15, the first raw water supply pipe 11, the first return pipe 31, the second return pipe 32, the room temperature water outlet pipe 21, and the fourth return pipe 34. , Is returned to the hot water tank 4 again via the hot water outlet pipe 25.

（第三返水管充填：第二循環状態）
図４に示すように、第三返水管充填では、第一返水管充填の状態から返水分岐弁３５を切り替えて、第二ポンプ４２を回転させる。温水タンク４に充填された飲料水Ｗを、第三原水供給管１５、第一原水供給管１１、第一返水管３１、第三返水管３３、冷水出水管２３、冷水タンク２、常温水出水管２１、第四返水管３４、温水出水管２５を介して、再び温水タンク４に戻す。 (Filling the third return pipe: Second circulation state)
As shown in FIG. 4, in the third return pipe filling, the return water branch valve 35 is switched from the state of the first return pipe filling to rotate the second pump 42. The drinking water W filled in the hot water tank 4 is supplied to the third raw water supply pipe 15, the first raw water supply pipe 11, the first return water pipe 31, the third return water pipe 33, the cold water outlet pipe 23, the cold water tank 2, and room temperature water. The water is returned to the hot water tank 4 again via the water outlet pipe 21, the fourth return water pipe 34, and the hot water outlet pipe 25.

（冷水出水）
図５（ａ）に示すように、冷水出水では、冷水出水管２３に飲料水Ｗを充填する。
定常状態に戻して、第一ポンプ４１を回転させる。冷水出水弁２４を開いて、飲料水ボトル５の飲料水Ｗを、第一原水供給管１１と第二原水供給管１４を介して、冷水タンク２に向けて送水する。
そして、出水口８から飲料水Ｗが出水したら、冷水出水弁２４を閉じて、第一ポンプ４１を停止させる。 (Cold water discharge)
As shown in FIG. 5A, in the cold water discharge, the cold water discharge pipe 23 is filled with the drinking water W.
After returning to the steady state, the first pump 41 is rotated. The cold water outlet valve 24 is opened to supply the drinking water W of the drinking water bottle 5 to the cold water tank 2 via the first raw water supply pipe 11 and the second raw water supply pipe 14.
When the drinking water W comes out from the water outlet 8, the cold water outlet valve 24 is closed and the first pump 41 is stopped.

（常温水出水）
図５（ｂ）に示すように、常温水出水では、常温水出水管２１に飲料水Ｗを充填する。
定常状態で第一ポンプ４１を回転させる。常温水出水弁２２を開いて、飲料水ボトル５の飲料水Ｗを、第一原水供給管１１と第二原水供給管１４を介して、冷水タンク２に向けて送水する。
そして、出水口８から飲料水Ｗが出水したら、常温水出水弁２２を閉じて、第一ポンプ４１を停止させる。 (Water at room temperature)
As shown in FIG. 5B, in the normal temperature water discharge, the normal temperature water discharge pipe 21 is filled with the drinking water W.
The first pump 41 is rotated in a steady state. The normal temperature water outlet valve 22 is opened to supply the drinking water W of the drinking water bottle 5 to the cold water tank 2 through the first raw water supply pipe 11 and the second raw water supply pipe 14.
Then, when the drinking water W comes out from the water outlet 8, the normal temperature water outlet valve 22 is closed and the first pump 41 is stopped.

（温水出水）
図５（ｃ）に示すように、温水出水では、温水出水管２５に飲料水Ｗを充填する。
定常状態から下流分岐弁１２を切り替えて、第一ポンプ４１を回転させる。温水出水弁２６を開放し、飲料水ボトル５の飲料水Ｗを、第一原水供給管１１と第三原水供給管１５を介して、温水タンク４に向けて送水する。
そして、出水口８から飲料水Ｗが出水したら、温水出水弁２６を閉じて、第一ポンプ４１を停止させる。 (Hot water outflow)
As shown in FIG. 5C, in hot water discharge, the hot water discharge pipe 25 is filled with drinking water W.
The first branch 41 is rotated by switching the downstream branch valve 12 from the steady state. The hot water outlet valve 26 is opened, and the drinking water W in the drinking water bottle 5 is sent to the hot water tank 4 via the first raw water supply pipe 11 and the third raw water supply pipe 15.
Then, when the drinking water W comes out from the water outlet 8, the hot water outlet valve 26 is closed and the first pump 41 is stopped.

〔エア除去〕
第一ポンプ４１は、渦巻ポンプであるため、空気を噛み込むと空回りしてしまう。飲料水ボトル５と連結部６の間から第一原水供給管１１に空気が入り込んで、第一ポンプ４１が空回り（送水不良が発生）する可能性がある。
そこで、第一原水供給管１１から空気を除去する動作を行う。エア除去は、例えば飲料水ボトル５を交換した後などに、任意に行われる。 [Air removal]
Since the first pump 41 is a centrifugal pump, it spins idle when air is trapped therein. Air may enter the first raw water supply pipe 11 from between the drinking water bottle 5 and the connecting portion 6, and the first pump 41 may run idle (water supply failure may occur).
Therefore, the operation of removing air from the first raw water supply pipe 11 is performed. The air removal is arbitrarily performed, for example, after exchanging the drinking water bottle 5.

（エア除去循環：第一循環状態）
エア除去循環は、上述した第一返水管充填と同一である（図３参照）。
定常状態から下流分岐弁１２、上流分岐弁１３および返水分岐弁３５を切り替えて、第二ポンプ４２を回転させる。温水タンク４に充填された飲料水Ｗを、第三原水供給管１５、第一原水供給管１１、第一返水管３１、第二返水管３２、常温水出水管２１、第四返水管３４、温水出水管２５を介して、再び温水タンク４に戻す。
エア除去循環は、例えば二十秒間行われる。 (Air removal circulation: First circulation state)
The air removal circulation is the same as the first return pipe filling described above (see FIG. 3).
The downstream branch valve 12, the upstream branch valve 13, and the water return branch valve 35 are switched from the steady state to rotate the second pump 42. The drinking water W filled in the warm water tank 4 is supplied with the third raw water supply pipe 15, the first raw water supply pipe 11, the first return pipe 31, the second return pipe 32, the room temperature water outlet pipe 21, and the fourth return pipe 34. , Is returned to the hot water tank 4 again via the hot water outlet pipe 25.
The air removal circulation is performed for 20 seconds, for example.

なお、第二ポンプ４２は、第一ポンプ４１と同様に渦巻ポンプであるものの、空気を噛み込むおそれがない。なぜなら、第二ポンプ４２は、温水タンク４の下方に配置されており、温水タンク４に充填された飲料水Ｗ（温水Ｈ）を下流分岐弁１２に向かう方向（反方向）に送水するからである。
第一循環状態と第二循環状態において、第二ポンプ４２を用いて飲料水Ｗを反方向に送水するのは、空気の噛み込みによる空回り（送水不良）を確実に回避するためである。 The second pump 42 is a centrifugal pump like the first pump 41, but there is no risk of air being trapped. This is because the second pump 42 is arranged below the warm water tank 4 and sends the drinking water W (warm water H) filled in the warm water tank 4 in the direction toward the downstream branch valve 12 (opposite direction). is there.
In the first circulation state and the second circulation state, the reason why the drinking water W is fed in the opposite direction by using the second pump 42 is to surely avoid idle rotation (water feeding failure) due to air entrapment.

〔衛生循環〕
飲料水サーバー１を使用していないと、各種配管に充填された飲料水Ｗに雑菌が繁殖しやすくなる。このため、飲料水Ｗを各種配管等に循環させて、雑菌の繁殖を防止する衛生循環を行う。
衛生循環は、二時間に一度程度の頻度で行われる。
衛生循環は、常温水出水弁２２、冷水出水弁２４、温水出水弁２６を閉じた状態で、第一循環、第二循環、第三循環の順に行う。 [Hygiene circulation]
If the drinking water server 1 is not used, various bacteria are likely to propagate in the drinking water W filled in various pipes. For this reason, the drinking water W is circulated through various pipes and the like to perform sanitary circulation for preventing the growth of various bacteria.
The sanitary circulation is performed once every two hours.
The sanitary circulation is performed in the order of the first circulation, the second circulation, and the third circulation with the room temperature water discharge valve 22, the cold water discharge valve 24, and the hot water discharge valve 26 closed.

（第一循環：第一循環状態）
第一循環は、上述した第一返水管充填と同一である（図３参照）。
定常状態から下流分岐弁１２、上流分岐弁１３および返水分岐弁３５を切り替えて、第二ポンプ４２を回転させる。温水タンク４に充填された飲料水Ｗを、第三原水供給管１５、第一原水供給管１１、第一返水管３１、第二返水管３２、常温水出水管２１、第四返水管３４、温水出水管２５を介して、再び温水タンク４に戻す。
第一循環は、例えば二秒間行われる。 (First circulation: First circulation state)
The first circulation is the same as the first return pipe filling described above (see FIG. 3).
The downstream branch valve 12, the upstream branch valve 13, and the water return branch valve 35 are switched from the steady state to rotate the second pump 42. The drinking water W filled in the warm water tank 4 is supplied with the third raw water supply pipe 15, the first raw water supply pipe 11, the first return pipe 31, the second return pipe 32, the room temperature water outlet pipe 21, and the fourth return pipe 34. , Is returned to the hot water tank 4 again via the hot water outlet pipe 25.
The first circulation is performed for 2 seconds, for example.

（第二循環：第二循環状態）
第二循環は、上述した第三返水管充填と同様の動作を行う（図４参照）。
第一循環状態から返水分岐弁３５を切り替えて、第二ポンプ４２を回転させる。温水タンク４に充填された飲料水Ｗを、第三原水供給管１５、第一原水供給管１１、第一返水管３１、第三返水管３３、冷水出水管２３、冷水タンク２、常温水出水管２１、第四返水管３４、温水出水管２５を介して、再び温水タンク４に戻す。
第二循環は、例えば二秒間行われる。 (Second circulation: Second circulation state)
The second circulation performs the same operation as the above-described third return water pipe filling (see FIG. 4).
The return water branch valve 35 is switched from the first circulation state to rotate the second pump 42. The drinking water W filled in the hot water tank 4 is supplied to the third raw water supply pipe 15, the first raw water supply pipe 11, the first return water pipe 31, the third return water pipe 33, the cold water outlet pipe 23, the cold water tank 2, and the room temperature water. The water is returned to the hot water tank 4 again via the water outlet pipe 21, the fourth return water pipe 34, and the hot water outlet pipe 25.
The second circulation is performed for 2 seconds, for example.

（第三循環：第三循環状態）
図６に示すように、第三循環では、第二循環状態から下流分岐弁１２と返水分岐弁３５を切り替えて、第一ポンプ４１を回転させる。冷水タンク２に充填された飲料水Ｗを、常温水出水管２１、第二返水管３２、第一返水管３１、第一原水供給管１１、第二原水供給管１４を介して、再び冷水タンク２に戻す。
第三循環は、例えば二秒間行われる。 (Third circulation: Third circulation state)
As shown in FIG. 6, in the third circulation, the downstream branch valve 12 and the return water branch valve 35 are switched from the second circulation state to rotate the first pump 41. The drinking water W filled in the cold water tank 2 is again cooled through the normal temperature water discharge pipe 21, the second return water pipe 32, the first return water pipe 31, the first raw water supply pipe 11, and the second raw water supply pipe 14 into the cold water tank. Return to 2.
The third circulation is performed for 2 seconds, for example.

〔熱殺菌〕
飲料水サーバー１を長時間に亘って使用しないと、各種配管に充填された飲料水Ｗに雑菌が繁殖してしまう。このため、温水Ｈを各種配管等に循環させて、雑菌を死滅させる熱殺菌を行う。
熱殺菌は、例えば三十日に一度程度の頻度で行われる。熱殺菌は、熱殺菌ボタンの操作によって任意に行うこともできる。
熱殺菌は、常温水出水弁２２、冷水出水弁２４、温水出水弁２６を閉じた状態で、上述した第一循環、第二循環、第三循環、エア除去循環の順に行う。 [Heat sterilization]
If the drinking water server 1 is not used for a long time, various germs will propagate in the drinking water W filled in various pipes. Therefore, the hot water H is circulated in various pipes and the like to perform heat sterilization for killing various bacteria.
The heat sterilization is performed, for example, about once every 30 days. The heat sterilization can be optionally performed by operating the heat sterilization button.
The heat sterilization is performed in the order of the above-described first circulation, second circulation, third circulation, and air removal circulation with the room temperature water outlet valve 22, the cold water outlet valve 24, and the hot water outlet valve 26 closed.

（第一循環：第一循環状態）
第一循環は、上述した通りである（図３参照）。
すなわち、加熱器を作動させながら、飲料水Ｗを温水タンク４から第三原水供給管１５、第一原水供給管１１、第一返水管３１、第二返水管３２、常温水出水管２１、第四返水管３４、温水出水管２５に送水させる。
例えば８５℃〜８８℃程度の温水Ｈを循環させて、熱殺菌する。
第一循環は、例えば二分間行われる。 (First circulation: First circulation state)
The first circulation is as described above (see FIG. 3).
That is, while operating the heater, the drinking water W is supplied from the warm water tank 4 to the third raw water supply pipe 15, the first raw water supply pipe 11, the first return water pipe 31, the second return water pipe 32, the room temperature water discharge pipe 21, Water is sent to the fourth return pipe 34 and the hot water outlet pipe 25.
For example, hot water H of about 85° C. to 88° C. is circulated for heat sterilization.
The first circulation is performed for 2 minutes, for example.

（第二循環：第二循環状態）
第二循環は、上述した通りである（図４参照）。
冷却器を停止し、加熱器を作動させながら、飲料水Ｗを温水タンク４から第三原水供給管１５、第一原水供給管１１、第一返水管３１、第三返水管３３、冷水出水管２３、冷水タンク２、常温水出水管２１、第四返水管３４、温水出水管２５に送水させる。
温水Ｈが冷水Ｃに混合した後に加熱されて、例えば７０℃〜７５℃程度の温水Ｈになる。この温水Ｈを循環させて、熱殺菌する。
第二循環は、飲料水Ｗが例えば７０℃〜７５℃程度の温水Ｈになった後に、例えば十五分間行われる。 (Second circulation: Second circulation state)
The second circulation is as described above (see FIG. 4).
While stopping the cooler and operating the heater, the drinking water W is supplied from the warm water tank 4 to the third raw water supply pipe 15, the first raw water supply pipe 11, the first return pipe 31, the third return pipe 33, and cold water discharge. Water is supplied to the water pipe 23, the cold water tank 2, the room temperature water outlet pipe 21, the fourth return pipe 34, and the hot water outlet pipe 25.
The hot water H is mixed with the cold water C and then heated to become the hot water H of about 70° C. to 75° C., for example. The hot water H is circulated to perform heat sterilization.
The second circulation is performed, for example, for 15 minutes after the drinking water W becomes the hot water H of about 70° C. to 75° C., for example.

（第三循環：第三循環状態）
第三循環は、上述した通りであり、第二循環の直後に行われる（図６参照）。
加熱器を停止して、７０℃〜７５℃程度の温水Ｈを、冷水タンク２から常温水出水管２１、第二返水管３２、第一返水管３１、第一原水供給管１１、第二原水供給管１４に送水させる。
温水タンク４の加熱器を用いずに、冷水タンク２等に残留する７０℃〜７５℃程度の温水Ｈを循環させて、第二原水供給管１４を熱殺菌する。
第三循環は、例えば五分間行われる。 (Third circulation: Third circulation state)
The third circulation is as described above, and is performed immediately after the second circulation (see FIG. 6).
The heater is stopped, and hot water H of about 70° C. to 75° C. is supplied from the cold water tank 2 to the room temperature water outlet pipe 21, the second return pipe 32, the first return pipe 31, the first raw water supply pipe 11, the second raw water. Water is supplied to the supply pipe 14.
The second raw water supply pipe 14 is heat-sterilized by circulating the residual hot water H of about 70° C. to 75° C. in the cold water tank 2 without using the heater of the hot water tank 4.
The third circulation is performed for 5 minutes, for example.

（エア除去循環：第一循環状態）
最後にエア除去循環を行う。エア除去循環は、第一循環と同一である（図３参照）。
この第一循環は、第一ポンプ４１のエア抜き作業であり、例えば二十秒間行われる。 (Air removal circulation: First circulation state)
Finally, air removal circulation is performed. The air removal circulation is the same as the first circulation (see FIG. 3).
This first circulation is an air bleeding operation of the first pump 41, and is performed, for example, for 20 seconds.

〔簡易熱殺菌〕
簡易熱殺菌は、五日に一度程度の頻度で行われる。
簡易熱殺菌は、常温水出水弁２２、冷水出水弁２４、温水出水弁２６を閉じた状態で、第一循環のみを行う。 [Simple heat sterilization]
Simple heat sterilization is performed about once every five days.
In the simple heat sterilization, only the first circulation is performed with the room temperature water outlet valve 22, the cold water outlet valve 24, and the hot water outlet valve 26 closed.

（第一循環：第一循環状態）
第一循環は、上述した通りである（図３参照）。
加熱器を作動させながら、飲料水Ｗを温水タンク４から第三原水供給管１５、第一原水供給管１１、第一返水管３１、第二返水管３２、常温水出水管２１、第四返水管３４、温水出水管２５に送水させる。
８５℃〜８８℃程度の温水Ｈを循環させて、熱殺菌する。
第一循環は、例えば二分間行われる。 (First circulation: First circulation state)
The first circulation is as described above (see FIG. 3).
While operating the heater, the drinking water W is supplied from the warm water tank 4 to the third raw water supply pipe 15, the first raw water supply pipe 11, the first return pipe 31, the second return pipe 32, the room temperature water discharge pipe 21, and the fourth. Water is sent to the return pipe 34 and the hot water outlet pipe 25.
Heat water H of about 85° C. to 88° C. is circulated for heat sterilization.
The first circulation is performed for 2 minutes, for example.

〔冷水出水循環〕
飲料水サーバー１の通常使用に際して、上述したように冷水出水、常温水出水、温水出水を行うと、冷水出水において冷水Ｃの水温が安定しないという問題が生じる。冷水タンク２に貯留された冷水Ｃに比べて、冷水出水管２３に滞留した冷水Ｃの水温が高くなる。
飲料水サーバー１では、冷水タンク２がサーバーハウジングの後方側に配置されるため、冷水出水管２３が長くなるからである。
このため、一杯目の冷水Ｃは、二杯目の冷水Ｃに比べて、水温が２℃程度高くなる。つまり、一杯目から冷えた冷水Ｃを供給することができない。
そこで、冷水出水時には、以下の動作を行う。 [Cold water outlet circulation]
In the normal use of the drinking water server 1, if cold water discharge, normal temperature water discharge, and hot water discharge are performed as described above, there arises a problem that the water temperature of the cold water C is not stable in the cold water discharge. As compared with the cold water C stored in the cold water tank 2, the water temperature of the cold water C retained in the cold water outlet pipe 23 becomes higher.
This is because in the drinking water server 1, the cold water tank 2 is arranged on the rear side of the server housing, so that the cold water outlet pipe 23 becomes long.
Therefore, the water temperature of the first cup of cold water C is about 2° C. higher than that of the second cup of cold water C. That is, it is impossible to supply the cold water C that has cooled from the first time.
Therefore, the following operations are performed when cold water is discharged.

（冷水出水前循環）
図７に示すように、冷水出水ボタンが操作されると、まず、定常状態から上流分岐弁１３を切り替えて、第一ポンプ４１を回転させる。そして、冷水出水弁２４を閉じて、冷水出水管２３の冷水Ｃを第三返水管３３、第一返水管３１、第一原水供給管１１、第二原水供給管１４を介して、再び冷水タンク２に戻す。さらに、冷水タンク２の冷水Ｃを冷水出水管２３に送水する。
この循環状態を約一秒間行う。 (Cold water circulation before outflow)
As shown in FIG. 7, when the cold water discharge button is operated, first, the upstream branch valve 13 is switched from the steady state to rotate the first pump 41. Then, the cold water discharge valve 24 is closed, and the cold water C of the cold water discharge pipe 23 is again cooled through the third return pipe 33, the first return pipe 31, the first raw water supply pipe 11, and the second raw water supply pipe 14. Return to 2. Further, the cold water C in the cold water tank 2 is sent to the cold water outlet pipe 23.
This circulation state is performed for about 1 second.

（冷水出水）
次いで、図５（ａ）に示すように、冷水出水前循環の状態から上流分岐弁１３を切り替えて、冷水出水弁２４を開く。そして、飲料水ボトル５の飲料水Ｗを、第一原水供給管１１と第二原水供給管１４を介して、冷水タンク２に向けて送水する。これにより、冷水出水管２３を介して出水口８から冷水Ｃが出水される。冷水出水管２３には、冷水タンク２の冷水Ｃが充填されているので、一杯目から冷えた冷水Ｃが供給される。 (Cold water discharge)
Next, as shown in FIG. 5A, the upstream branch valve 13 is switched from the state of circulation before cold water discharge and the cold water discharge valve 24 is opened. Then, the drinking water W of the drinking water bottle 5 is sent to the cold water tank 2 via the first raw water supply pipe 11 and the second raw water supply pipe 14. Thereby, the cold water C is discharged from the water outlet 8 via the cold water discharge pipe 23. Since the cold water outlet pipe 23 is filled with the cold water C in the cold water tank 2, the cold water C that has been cooled from the first time is supplied.

このように、飲料水サーバー１は、飲料水Ｗとして、温水Ｈ、冷水Ｃおよび常温水Ｎを出水できる。さらに、温水配管系統、冷水配管系統および常温水配管系統を確実に殺菌できる。 In this way, the drinking water server 1 can issue hot water H, cold water C, and room temperature water N as drinking water W. Furthermore, the hot water piping system, the cold water piping system, and the room temperature water piping system can be reliably sterilized.

本発明は、上述した実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲において、上述した実施形態に種々の変更を加えたものを含む。すなわち、実施形態で挙げた具体的な形状や構成等は一例にすぎず、適宜変更が可能である。 The present invention is not limited to the above-described embodiments, and includes various modifications of the above-described embodiments without departing from the spirit of the present invention. That is, the specific shapes and configurations mentioned in the embodiments are merely examples, and can be changed as appropriate.

熱殺菌は、第一循環状態、第二循環状態、第三循環状態の順に行う場合に限らない。熱殺菌は、第二循環状態、第三循環状態、第一循環状態の順に行ってもよい。 The thermal sterilization is not limited to the case of performing the first circulation state, the second circulation state, and the third circulation state in this order. The heat sterilization may be performed in the order of the second circulation state, the third circulation state, and the first circulation state.

衛生循環は、第一循環状態、第二循環状態、第三循環状態の順に行う場合に限らない。衛生循環は、第二循環状態、第三循環状態、第一循環状態の順に行ってもよい。第三循環状態、第二循環状態、第一循環状態の順に行ってもよい。第三循環状態、第一循環状態、第二循環状態の順に行ってもよい。 The sanitary circulation is not limited to the case of performing the first circulation state, the second circulation state, and the third circulation state in this order. The sanitary circulation may be performed in the order of the second circulation state, the third circulation state, and the first circulation state. You may perform in order of a 3rd circulation state, a 2nd circulation state, and a 1st circulation state. You may perform in order of a 3rd circulation state, a 1st circulation state, and a 2nd circulation state.

エア除去は、第一循環状態のみを行う場合に限らない。エア除去は、第二循環状態のみを行う場合であってもよい。 Air removal is not limited to the case of performing only the first circulation state. The air removal may be performed only in the second circulation state.

第一循環状態は、飲料水Ｗを反方向に通水させる場合に限らない。第一循環状態は、飲料水Ｗを正方向に通水させる場合であってもよい。すなわち、温水タンク４に充填された飲料水Ｗを、温水出水管２５、第四返水管３４、常温水出水管２１、第二返水管３２、第一返水管３１、第一原水供給管１１、第三原水供給管１５を介して、再び温水タンク４に戻す。 The first circulation state is not limited to the case where the drinking water W is passed in the opposite direction. The first circulation state may be a case where the drinking water W is passed in the forward direction. That is, the drinking water W filled in the hot water tank 4 is supplied to the hot water outlet pipe 25, the fourth return pipe 34, the room temperature water outlet pipe 21, the second return pipe 32, the first return pipe 31, the first raw water supply pipe 11, It is returned to the hot water tank 4 again via the third raw water supply pipe 15.

第二循環状態は、飲料水Ｗを反方向に通水させる場合に限らない。第二循環状態は、飲料水Ｗを正方向に通水させる場合であってもよい。すなわち、温水タンク４に充填された飲料水Ｗを、温水出水管２５、第四返水管３４、常温水出水管２１、冷水タンク２、冷水出水管２３、第三返水管３３、第一返水管３１、第一原水供給管１１、第三原水供給管１５を介して、再び温水タンク４に戻す。 The second circulation state is not limited to the case where the drinking water W is passed in the opposite direction. The second circulation state may be a case where the drinking water W is passed in the forward direction. That is, the drinking water W filled in the hot water tank 4 is supplied to the hot water outlet pipe 25, the fourth return pipe 34, the room temperature water outlet pipe 21, the cold water tank 2, the cold water outlet pipe 23, the third return pipe 33, and the first return pipe. It returns to the warm water tank 4 again via 31, the 1st raw water supply pipe 11, and the 3rd raw water supply pipe 15.

第三循環状態は、飲料水Ｗを正方向に通水させる場合に限らない。第三循環状態は、飲料水Ｗを反方向に通水させる場合であってもよい。すなわち、冷水タンク２に充填された飲料水Ｗを、第二原水供給管１４、第一原水供給管１１、第一返水管３１、第二返水管３２、常温水出水管２１を介して、再び冷水タンク２に戻す。 The third circulation state is not limited to the case where the drinking water W is passed in the forward direction. The third circulation state may be a case where the drinking water W is passed in the opposite direction. That is, the drinking water W filled in the cold water tank 2 is again supplied through the second raw water supply pipe 14, the first raw water supply pipe 11, the first return water pipe 31, the second return water pipe 32, and the room temperature water discharge pipe 21. Return to cold water tank 2.

（ダイヤフラム型ポンプ）
飲料水サーバー１は、非容積型（渦巻型）のポンプ４１，４２を備える場合に限らない。飲料水サーバー１は、容積型（ダイヤフラム型）のポンプ４５を備える場合であってもよい。
ポンプ（容積式ポンプ）４５は、第一ポンプ４１と同位置に配置される（図１参照）。
ポンプ４５は、飲料水Ｗを下流分岐弁１２に向かう方向（正方向）に送水することができる。ただし、ポンプ４５は、停止時には、飲料水Ｗを通水させることができない（飲料水Ｗが正方向と反方向のいずれにも通水しない）。 (Diaphragm type pump)
The drinking water server 1 is not limited to the case where the non-volume type (spiral type) pumps 41 and 42 are provided. The drinking water server 1 may include a positive displacement type (diaphragm type) pump 45.
The pump (positive displacement pump) 45 is arranged at the same position as the first pump 41 (see FIG. 1).
The pump 45 can send the drinking water W in the direction toward the downstream branch valve 12 (forward direction). However, the pump 45 cannot pass the drinking water W when stopped (the drinking water W does not pass in either the forward direction or the reverse direction).

（水頭差方式サーバー）
飲料水サーバー１は、ポンプ４１，４２（またはポンプ４５）を用いて飲料水Ｗを供給・注水等する場合に限らない。
飲料水サーバー１は、水頭差によって飲料水Ｗを供給・注水等する場合であってもよい。この場合には、ポンプ４２のみ、あるいは、ポンプ４６のみを備える。
ポンプ（第三非容積式ポンプ）４６は、非容積型（渦巻型）のポンプであって、第一返水管３１に配置される。ポンプ４６は、上流分岐弁１３と返水分岐弁３５の間に配置される（図１参照）。
ポンプ４６は、飲料水Ｗを上流分岐弁１３に向かう方向（正方向）または返水分岐弁３５に向かう方向（反方向）に送水することができる。ポンプ４６は、停止時には、飲料水Ｗを通水させる（飲料水Ｗが正方向と反方向に通水する）。 (Water head difference server)
The drinking water server 1 is not limited to the case where the drinking water W is supplied or poured using the pumps 41 and 42 (or the pump 45).
The drinking water server 1 may supply and drink the drinking water W by the head difference. In this case, only the pump 42 or only the pump 46 is provided.
The pump (third non-volumetric pump) 46 is a non-volumetric (spiral type) pump and is arranged in the first return pipe 31. The pump 46 is arranged between the upstream branch valve 13 and the water return branch valve 35 (see FIG. 1).
The pump 46 can send the drinking water W in the direction toward the upstream branch valve 13 (forward direction) or in the direction toward the return water branch valve 35 (counterdirection). When stopped, the pump 46 allows the drinking water W to pass (the drinking water W passes in the forward direction and the reverse direction).

〔温水出水循環〕
温水タンク４がサーバーハウジングの後方側に配置される場合は、温水出水管２５が長くなる。この場合は、上述した冷水出水前循環に代えて、温水出水前循環を行う。 [Hot water outlet circulation]
When the hot water tank 4 is arranged on the rear side of the server housing, the hot water outlet pipe 25 becomes long. In this case, the hot water pre-emergence circulation is performed instead of the cold water pre-emergence circulation.

（温水出水前循環）
温水出水ボタンが操作されると、まず、定常状態から下流分岐弁１２、上流分岐弁１３および返水分岐弁３５を切り替えて、第一ポンプ４１を回転させる。そして、温水出水弁２６を閉じて、温水出水管２５の温水Ｈを第四返水管３４、常温水出水管２１、第二返水管３２、第一返水管３１、第一原水供給管１１、第三原水供給管１５を介して、再び温水タンク４に戻す。さらに、温水タンク４の温水Ｈを温水出水管２５に送水する。
この循環状態を約１秒間行う。 (Circulation before hot water discharge)
When the hot water discharge button is operated, first, the downstream branch valve 12, the upstream branch valve 13, and the return water branch valve 35 are switched from the steady state to rotate the first pump 41. Then, the hot water outlet valve 26 is closed, and the hot water H of the hot water outlet pipe 25 is supplied to the fourth return pipe 34, the normal temperature water outlet pipe 21, the second return pipe 32, the first return pipe 31, the first raw water supply pipe 11, and the It is returned to the warm water tank 4 again via the three raw water supply pipe 15. Further, the hot water H in the hot water tank 4 is sent to the hot water outlet pipe 25.
This circulation state is performed for about 1 second.

（温水出水）
次いで、図５（ｃ）に示すように、温水出水前循環の状態から上流分岐弁１３と返水分岐弁３５を切り替えて、温水出水弁２６を開く。これにより、温水出水管２５を介して出水口８から温水Ｈが出水される。温水出水管２５には、温水タンク４の温水Ｈが充填されているので、一杯目から温められた温水Ｈが供給される。 (Hot water outflow)
Next, as shown in FIG. 5(c), the upstream branch valve 13 and the return water branch valve 35 are switched from the state of circulation before hot water discharge, and the hot water discharge valve 26 is opened. Thereby, the hot water H is discharged from the water outlet 8 through the hot water outlet pipe 25. Since the hot water outlet pipe 25 is filled with the hot water H in the hot water tank 4, the hot water H warmed from the first time is supplied.

飲料水ボトル５は、いわゆるガロンボトル（エアイン、回収型）とクラッシャブルボトル（エアレス、ワンウェイ、使い捨て型）のいずれであってもよい。飲料水ボトル５は、ＰＥＴに限らず、各種樹脂材料等で形成されてもよい。 The drinking water bottle 5 may be either a so-called gallon bottle (air-in, recovery type) or a crushable bottle (airless, one-way, disposable type). The drinking water bottle 5 is not limited to PET and may be made of various resin materials or the like.

冷水タンク２、温水タンク４および飲料水ボトル５の形状や数量、配置等は任意である。 The cold water tank 2, the hot water tank 4, and the drinking water bottle 5 may have any shape, number, and arrangement.

飲料水ボトル５に充填される飲料水Ｗは、水に限らず、ジュースやコーヒー等の液体であってもよい。
飲料水ボトル５を用いずに、水道水が飲料水サーバー１に供給される場合であってもよい。 The drinking water W with which the drinking water bottle 5 is filled is not limited to water and may be a liquid such as juice or coffee.
It may be a case where tap water is supplied to the drinking water server 1 without using the drinking water bottle 5.

１ 飲料水サーバー ２ 冷水タンク ３ セパレーター ４ 温水タンク ５ 飲料水ボトル（原水容器） ６ 連結部 ７ 給水部 ８ 出水口 １１ 第一原水供給管 １２ 下流分岐弁 １３ 上流分岐弁 １４ 第二原水供給管 １５ 第三原水供給管 ２１ 常温水出水管 ２２ 常温水出水弁 ２３ 冷水出水管 ２４ 冷水出水弁 ２５ 温水出水管 ２６ 温水出水弁 ３１ 第一返水管 ３２ 第二返水管 ３３ 第三返水管 ３４ 第四返水管 ３５ 返水分岐弁 ４１ 第一ポンプ（第一非容積式ポンプ） ４２ 第二ポンプ（第二非容積式ポンプ） ４５ ポンプ（容積式ポンプ） ４６ ポンプ（第三非容積式ポンプ） Ｗ 飲料水 Ｃ 冷水 Ｎ 常温水 Ｈ 温水
1 drinking water server 2 cold water tank 3 separator 4 hot water tank 5 drinking water bottle (raw water container) 6 connection part 7 water supply part 8 water outlet 11 first raw water supply pipe 12 downstream branch valve 13 upstream branch valve 14 second raw water supply pipe 15 Third raw water supply pipe 21 Room temperature water outlet pipe 22 Room temperature water outlet valve 23 Cold water outlet pipe 24 Cold water outlet valve 25 Hot water outlet pipe 26 Hot water outlet valve 31 First return pipe 32 Second return pipe 33 Third return pipe 34 Fourth Return pipe 35 Return water branch valve 41 First pump (first non-displacement pump) 42 Second pump (second non-displacement pump) 45 Pump (displacement pump) 46 Pump (third non-displacement pump) W Beverage Water C Cold water N Normal temperature water H Hot water

Claims (8)

飲料水が充填された原水容器が着脱する連結部と、
前記飲料水を冷却する冷却器を有し、冷水と常温水を貯留する冷水タンクと、
前記飲料水を加熱する加熱器を有し、温水を貯留する温水タンクと、
前記連結部に連通して、前記原水容器に充填された飲料水を下流分岐弁まで通水する第一原水供給管と、
前記下流分岐弁から前記冷水タンクの上部に向けて配管される第二原水供給管と、
前記下流分岐弁から前記温水タンクの下部に向けて配管される第三原水供給管と、
前記冷水タンクの下部に連通して、冷水を冷水出水弁まで通水する冷水出水管と、
前記冷水タンクの上部に連通して、常温水を常温水出水弁まで通水する常温水出水管と、
前記温水タンクに連通して、温水を温水出水弁まで通水する温水出水管と、
前記第一原水供給管の上流側で上流分岐弁を介して分岐して、飲料水を返水分岐弁まで通水する第一返水管と、
前記返水分岐弁から前記常温水出水管に向けて配管される第二返水管と、
前記返水分岐弁から前記冷水出水管に向けて配管される第三返水管と、
前記常温水出水管の上流側と前記温水出水管の下流側を連通する第四返水管と、
前記冷水タンクまたは前記温水タンクの少なくとも一方に貯留された飲料水を、前記第一返水管、前記第二返水管、前記第三返水管、前記第四返水管を介して循環させるポンプと、
を備え、
前記温水タンク、前記第三原水供給管、前記第一原水供給管、前記第一返水管、前記第二返水管、前記常温水出水管、前記第四返水管、前記温水出水管に飲料水を通水させる第一循環状態と、
前記温水タンク、前記第三原水供給管、前記第一原水供給管、前記第一返水管、前記第三返水管、前記冷水出水管、前記冷水タンク、前記常温水出水管、前記第四返水管、前記温水出水管に飲料水を通水させる第二循環状態と、
前記冷水タンク、前記常温水出水管、前記第二返水管、前記第一返水管、前記第一原水供給管、前記第二原水供給管に飲料水を通水させる第三循環状態と、
を有する飲料水サーバー。 A connection part for attaching and detaching a raw water container filled with drinking water,
A cold water tank having a cooler for cooling the drinking water, for storing cold water and normal temperature water,
Having a heater for heating the drinking water, a hot water tank for storing hot water,
A first raw water supply pipe which communicates with the connecting portion and which passes the drinking water filled in the raw water container to a downstream branch valve,
A second raw water supply pipe piped from the downstream branch valve toward the upper part of the cold water tank,
A third raw water supply pipe piped from the downstream branch valve toward the lower part of the hot water tank,
A cold water outlet pipe communicating with the lower portion of the cold water tank to pass cold water to a cold water outlet valve,
A normal temperature water outlet pipe communicating with the upper portion of the cold water tank to pass normal temperature water to the normal temperature water outlet valve,
A hot water outlet pipe that communicates with the hot water tank to pass hot water to a hot water outlet valve;
A first return pipe that branches through an upstream branch valve on the upstream side of the first raw water supply pipe to pass drinking water to a return branch valve,
A second return pipe piped from the return water branch valve toward the normal temperature water outlet pipe,
A third return pipe piped from the return water branch valve toward the cold water outlet pipe,
A fourth return pipe connecting the upstream side of the room temperature water outlet pipe and the downstream side of the warm water outlet pipe,
Drinking water stored in at least one of the cold water tank or the hot water tank, the first return pipe, the second return pipe, the third return pipe, a pump for circulating through the fourth return pipe,
Equipped with
Drinking water in the hot water tank, the third raw water supply pipe, the first raw water supply pipe, the first return pipe, the second return pipe, the room temperature water outlet pipe, the fourth return pipe, the hot water outlet pipe The first circulation state that allows water to flow,
The hot water tank, the third raw water supply pipe, the first raw water supply pipe, the first return pipe, the third return pipe, the cold water outlet pipe, the cold water tank, the room temperature water outlet pipe, the fourth return A water pipe, a second circulation state for passing drinking water through the hot water outlet pipe,
The cold water tank, the room temperature water outlet pipe, the second return pipe, the first return pipe, the first raw water supply pipe, a third circulation state for passing drinking water to the second raw water supply pipe,
A drinking water server. 前記ポンプは、
前記第一原水供給管に配置された第一非容積式ポンプと、
前記第三原水供給管に配置された第二非容積式ポンプと、
からなる請求項１に記載の飲料水サーバー。 The pump is
A first non-positive displacement pump disposed in the first raw water supply pipe,
A second non-positive displacement pump arranged in the third raw water supply pipe,
The drinking water server according to claim 1, comprising: 前記ポンプは、
前記第一原水供給管に配置された容積式ポンプからなる請求項１に記載の飲料水サーバー。 The pump is
The drinking water server according to claim 1, comprising a positive displacement pump disposed in the first raw water supply pipe. 前記ポンプは、前記第一返水管に配置された第三非容積式ポンプからなり、
前記原水容器に充填された飲料水が水頭差により前記冷水タンクと前記温水タンクに供給される請求項１に記載の飲料水サーバー。 The pump comprises a third non-positive displacement pump arranged in the first return pipe,
The drinking water server according to claim 1, wherein the drinking water filled in the raw water container is supplied to the cold water tank and the hot water tank by a head difference. 前記第一循環状態、前記第二循環状態、前記第三循環状態の順に飲料水を通水する請求項１から請求項４のうちいずれか一項に記載の飲料水サーバー。 The drinking water server according to any one of claims 1 to 4, wherein drinking water is passed in the order of the first circulation state, the second circulation state, and the third circulation state. 前記第二循環状態、前記第三循環状態、前記第一循環状態の順に飲料水を通水する請求項１から請求項４のうちいずれか一項に記載の飲料水サーバー。 The drinking water server according to any one of claims 1 to 4, wherein drinking water is passed in the order of the second circulation state, the third circulation state, and the first circulation state. 飲料水が充填された原水容器が着脱する連結部と、
前記飲料水を冷却する冷却器を有し、冷水と常温水を貯留する冷水タンクと、
前記飲料水を加熱する加熱器を有し、温水を貯留する温水タンクと、
前記連結部に連通して、前記原水容器に充填された飲料水を下流分岐弁まで通水する第一原水供給管と、
前記下流分岐弁から前記冷水タンクの上部に向けて配管される第二原水供給管と、
前記下流分岐弁から前記温水タンクの下部に向けて配管される第三原水供給管と、
前記冷水タンクの下部に連通して、冷水を冷水出水弁まで通水する冷水出水管と、
前記冷水タンクの上部に連通して、常温水を常温水出水弁まで通水する常温水出水管と、
前記温水タンクに連通して、温水を温水出水弁まで通水する温水出水管と、
前記第一原水供給管の上流側で上流分岐弁を介して分岐して、飲料水を返水分岐弁まで通水する第一返水管と、
前記返水分岐弁から前記常温水出水管に向けて配管される第二返水管と、
前記返水分岐弁から前記冷水出水管に向けて配管される第三返水管と、
前記常温水出水管の上流側と前記温水出水管の下流側を連通する第四返水管と、
前記冷水タンクまたは前記温水タンクの少なくとも一方に貯留された飲料水を、前記第一返水管、前記第二返水管、前記第三返水管、前記第四返水管を介して循環させるポンプと、
を備え、
前記温水タンク、前記第三原水供給管、前記第一原水供給管、前記第一返水管、前記第二返水管、前記常温水出水管、前記第四返水管、前記温水出水管に飲料水を通水させる第一循環状態を有する飲料水サーバー。 A connection part for attaching and detaching a raw water container filled with drinking water,
A cold water tank having a cooler for cooling the drinking water, for storing cold water and normal temperature water,
Having a heater for heating the drinking water, a hot water tank for storing hot water,
A first raw water supply pipe which communicates with the connecting portion and which passes the drinking water filled in the raw water container to a downstream branch valve,
A second raw water supply pipe piped from the downstream branch valve toward the upper part of the cold water tank,
A third raw water supply pipe piped from the downstream branch valve toward the lower part of the hot water tank,
A cold water outlet pipe communicating with the lower portion of the cold water tank to pass cold water to a cold water outlet valve,
A normal temperature water outlet pipe communicating with the upper portion of the cold water tank to pass normal temperature water to the normal temperature water outlet valve,
A hot water outlet pipe that communicates with the hot water tank to pass hot water to a hot water outlet valve;
A first return pipe that branches through an upstream branch valve on the upstream side of the first raw water supply pipe to pass drinking water to a return branch valve,
A second return pipe piped from the return water branch valve toward the normal temperature water outlet pipe,
A third return pipe piped from the return water branch valve toward the cold water outlet pipe,
A fourth return pipe connecting the upstream side of the room temperature water outlet pipe and the downstream side of the warm water outlet pipe,
Drinking water stored in at least one of the cold water tank or the hot water tank, the first return pipe, the second return pipe, the third return pipe, a pump for circulating through the fourth return pipe,
Equipped with
Drinking water in the hot water tank, the third raw water supply pipe, the first raw water supply pipe, the first return pipe, the second return pipe, the room temperature water outlet pipe, the fourth return pipe, the hot water outlet pipe A drinking water server having a first circulation state for passing water. 飲料水が充填された原水容器が着脱する連結部と、
前記飲料水を冷却する冷却器を有し、冷水と常温水を貯留する冷水タンクと、
前記飲料水を加熱する加熱器を有し、温水を貯留する温水タンクと、
前記連結部に連通して、前記原水容器に充填された飲料水を下流分岐弁まで通水する第一原水供給管と、
前記下流分岐弁から前記冷水タンクの上部に向けて配管される第二原水供給管と、
前記下流分岐弁から前記温水タンクの下部に向けて配管される第三原水供給管と、
前記冷水タンクの下部に連通して、冷水を冷水出水弁まで通水する冷水出水管と、
前記冷水タンクの上部に連通して、常温水を常温水出水弁まで通水する常温水出水管と、
前記温水タンクに連通して、温水を温水出水弁まで通水する温水出水管と、
前記第一原水供給管の上流側で上流分岐弁を介して分岐して、飲料水を返水分岐弁まで通水する第一返水管と、
前記返水分岐弁から前記常温水出水管に向けて配管される第二返水管と、
前記返水分岐弁から前記冷水出水管に向けて配管される第三返水管と、
前記常温水出水管の上流側と前記温水出水管の下流側を連通する第四返水管と、
前記冷水タンクまたは前記温水タンクの少なくとも一方に貯留された飲料水を、前記第一返水管、前記第二返水管、前記第三返水管、前記第四返水管を介して循環させるポンプと、
を備え、
前記温水タンク、前記第三原水供給管、前記第一原水供給管、前記第一返水管、前記第三返水管、前記冷水出水管、前記冷水タンク、前記常温水出水管、前記第四返水管、前記温水出水管に飲料水を通水させる第二循環状態を有する飲料水サーバー。
A connection part for attaching and detaching a raw water container filled with drinking water,
A cold water tank having a cooler for cooling the drinking water, for storing cold water and normal temperature water,
Having a heater for heating the drinking water, a hot water tank for storing hot water,
A first raw water supply pipe which communicates with the connecting portion and which passes the drinking water filled in the raw water container to a downstream branch valve,
A second raw water supply pipe piped from the downstream branch valve toward the upper part of the cold water tank,
A third raw water supply pipe piped from the downstream branch valve toward the lower part of the hot water tank,
A cold water outlet pipe communicating with the lower portion of the cold water tank to pass cold water to a cold water outlet valve,
A normal temperature water outlet pipe communicating with the upper portion of the cold water tank to pass normal temperature water to the normal temperature water outlet valve,
A hot water outlet pipe that communicates with the hot water tank to pass hot water to a hot water outlet valve;
A first return pipe that branches through an upstream branch valve on the upstream side of the first raw water supply pipe to pass drinking water to a return branch valve,
A second return pipe piped from the return water branch valve toward the normal temperature water outlet pipe,
A third return pipe piped from the return water branch valve toward the cold water outlet pipe,
A fourth return pipe connecting the upstream side of the room temperature water outlet pipe and the downstream side of the warm water outlet pipe,
Drinking water stored in at least one of the cold water tank or the hot water tank, the first return pipe, the second return pipe, the third return pipe, a pump for circulating through the fourth return pipe,
Equipped with
The hot water tank, the third raw water supply pipe, the first raw water supply pipe, the first return pipe, the third return pipe, the cold water outlet pipe, the cold water tank, the room temperature water outlet pipe, the fourth return A drinking water server having a water pipe and a second circulation state for passing drinking water through the hot water discharge pipe.
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JP6875922B2 (en) * 2017-04-11 2021-05-26 矢崎エナジーシステム株式会社 Beverage supply device
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