JP2013121414A - Carbonated spring generating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carbonated spring generating device capable of efficiently generating a carbonated spring without increasing the water pressure.SOLUTION: The carbonated spring generating device has an air-bubble dissolving path 12 through which water having carbon dioxide bubbles mixed therein flows. The air-bubble dissolving path 12 has at least one constricted section 14 that divides the carbon dioxide bubbles, and a pressure holding section 16 that maintains the water pressure in the output side end of the air-bubble dissolving path 12 at the water pressure of inside the air-bubble dissolving path 12. The effective diameter of the air-bubble dissolving path 12 is stipulated such that the viscous resistance R of the air bubbles at the flow speed v of the water flowing through the air-bubble dissolving path 12 is at least the buoyancy F of the carbon dioxide bubbles when the carbon dioxide bubbles have a maximum diameter D as the effective diameter thereof, and the constricted section 14 has a smaller effective diameter than the air-bubble dissolving path 12.

Description

  The present invention relates to a carbonated spring production apparatus.

  Carbonate springs, which are water or hot water in which carbon dioxide is dissolved, are used for bathing. In connection with this, the development of the carbonated spring production | generation apparatus which produces | generates carbonated spring efficiently is performed.

  For example, the technique described in Patent Document 1 is an example thereof, and has a throttle part that narrows the flow cross-sectional area and a divergent part that increases the flow cross-sectional area in the flow direction of the hot carbonated water. An apparatus is disclosed. Thus, a technique for efficiently dissolving carbon dioxide in water is desired for the production of carbonated springs.

JP 2006-212098 A

  For example, as disclosed in Patent Document 1, for the purpose of efficiently dissolving carbon dioxide in water, many carbonate spring generators equipped with a pump for increasing the water pressure have been used. On the other hand, since carbonated spring is used for bathing, a carbonated spring generating apparatus that is as small as possible and does not require a power source is expected.

  The present invention has been made against the background of the above circumstances, and an object thereof is to provide a carbonated spring generating apparatus capable of efficiently generating carbonated spring without increasing the water pressure.

  In order to achieve this object, the first aspect of the invention is characterized in that (a) a bubble dissolution channel through which water mixed with carbon dioxide bubbles flows is provided, and the carbon dioxide bubbles are dissolved in the water. (B) the bubble dissolving flow path includes at least one throttle part for dividing the carbon dioxide bubbles, and the flow at the output side end of the bubble dissolving flow path. (C) the effective diameter of the bubble dissolution channel is such that the viscosity resistance of the bubble at the flow velocity of the water flowing through the bubble dissolution channel is the carbon dioxide bubble Is determined to be equal to or greater than the buoyancy of the carbon dioxide bubbles when the maximum diameter is the effective diameter, and (d) the length of the bubble dissolution channel is the flow rate of the bubble dissolution channel In water mixed with carbon dioxide bubbles, (E) the throttle portion has an effective diameter smaller than that of the bubble dissolving flow path, and (f) the pressure holding portion. Has a passage area for maintaining the water pressure inside the carbonated spring generating apparatus at a pressure that can promote the dissolution of the carbon dioxide bubbles.

  In this way, since the carbon dioxide bubbles in the water are separated by the throttle portion, the contact area between the carbon dioxide bubbles and the water increases, and the bubbles flow without stagnation due to the effective diameter of the bubble dissolution channel. The contact time between carbon dioxide bubbles and water can be increased. Further, since the water pressure inside the carbonated spring production apparatus is maintained at a pressure that can promote the dissolution of carbon dioxide bubbles by the pressure holding unit, the dissolution of carbon dioxide in water is promoted without increasing the water pressure by a pump or the like. Further, the water in which carbon dioxide bubbles are mixed by the bubble dissolution channel is circulated through the bubble dissolution channel for a dissolution time required for the carbon dioxide concentration to reach a predetermined concentration, so that a carbonated spring having a predetermined concentration is obtained.

  Further, the second invention is characterized in that, in the first invention, the passage area of the pressure holding unit is such that the flow rate of water supplied to the carbonated spring generating device is in a range of 5 L / min to 30 L / min. In one case, the water pressure inside the carbonated spring production apparatus is set to be maintained at a pressure that can promote the dissolution of the carbon dioxide bubbles. In this way, when water is supplied in the range of 5 L / min to 30 L / min, which is generally the amount of water supplied by a water supply or hot water supply device, a carbonated spring is generated without increasing the water pressure by a pump or the like. be able to.

  The third aspect of the invention is characterized in that in the first or second aspect, the carbon dioxide bubbles divided by the throttle portion are combined and enlarged so as to hinder the flow of carbonated spring to the carbonated spring discharge part. In other words, the distance between the throttle part and the carbonated spring discharge part is determined. In this way, even if the carbon dioxide bubbles finely divided by the throttle part remain undissolved, in the carbonated spring flow path from the throttle part to the discharge part, the undissolved bubbles are divided and finely divided. As it is, it is discharged from the discharge part. For this reason, bubbles that remain undissolved in the carbonated spring flow path from the throttle part to the discharge part accumulate and become large bubbles, and the large bubbles are swept away at a time and pass through the discharge part to generate a gurgling noise or water. It is possible to prevent the user from feeling uncomfortable that the flow is delayed.

  According to a fourth aspect of the present invention, in the first to third aspects, the length of the bubble dissolution channel is the water in which the carbon dioxide bubbles circulated in the bubble dissolution channel are mixed. , The dissolution time for the carbon dioxide concentration to reach a substantially saturated concentration is ensured. In this way, it is possible to generate a carbonated spring in which the concentration of carbon dioxide is substantially saturated without increasing the water pressure by a pump or the like.

  Further, a feature of the fifth invention is that, in any one of the first to fourth inventions, the passage area of the pressure holding portion can be changed. In this way, even when the amount of water supplied to the carbonated spring production apparatus is different, an appropriate passage area can be set by changing the passage area of the pressure holding unit, and without increasing the water pressure by a pump or the like. A carbonated spring can be produced.

  In addition, a feature of the sixth invention is that, in any one of the first to fifth inventions, the pressure holding portion has an effective diameter smaller than an effective diameter of the bubble dissolution channel. Thus, it is possible to selectively attach from a plurality of pressure holding portions having different effective diameters. In this way, even if the water pressure and the amount of water flowing into the carbonated spring production device are different, the water pressure in the bubble dissolution channel is prevented from dropping to atmospheric pressure. In addition, when used in combination with the seventh and eighth inventions, the bubble supply valve, the bubble supply stop valve, while preventing the water pressure in the bubble dissolution channel from dropping to atmospheric pressure The water pressure for operating the can be secured.

  According to a seventh feature of the present invention, in any one of the first to sixth inventions, the bubble dissolution channel is a flexible tube. In this way, for example, a bubble dissolving channel can be provided in a flexible tube such as a hose. Therefore, compared with the case where a hose is provided for simple water distribution in addition to the bubble dissolution channel, the length of the pipe can be shortened as a whole.

  Further, the eighth invention is characterized in that, in any one of the first to seventh inventions, (a) a raw material that generates carbon dioxide by reacting with water and water are reacted to produce carbon dioxide. A carbon dioxide generating section that generates carbon; and (b) a bubble injecting section that injects pre-generated carbon dioxide into the water as bubbles, and (c) the carbon dioxide bubbles are formed of the carbon dioxide generating section and the carbon dioxide generating section. One of the bubble injection portions is generated by selectively executing. If it does in this way, it will become possible to choose the generation source of a carbon dioxide bubble from either a carbon dioxide production part or a bubble injection part.

  The ninth invention is characterized in that, in the eighth invention, (a) the raw material is a solid having a predetermined shape, and (b) the carbon dioxide generator is sealed against the atmosphere. A reaction chamber in which the raw material and water are reacted, and (c) the amount of water supplied to the reaction chamber can be adjusted and the immersion water level of the raw material in the reaction chamber can be adjusted. Thus, the reaction time of the raw material can be controlled. In this way, the amount of carbon dioxide produced in the carbon dioxide production unit can be suitably controlled.

  The tenth aspect of the invention includes, in the eighth or ninth aspect, (a) a carbonated spring generation switching unit that selectively executes whether or not to supply water to the bubble dissolution channel. (B) The bubble injection section has a bubble supply valve that enables the injection of carbon dioxide only when water is supplied to the bubble dissolution channel by the carbonated spring generation switching section. In this way, it is possible to easily stop the injection of carbon dioxide from the bubble injection part when no carbonated spring is generated.

  The eleventh invention is characterized in that, in any one of the eighth to tenth inventions, (a) a first supply unit that supplies the water to the carbon dioxide generation unit, and the bubble injection unit. A second supply unit that supplies the water to the first supply unit, and a selection unit that selectively supplies the water to one of the first supply unit and the second supply unit, and (b) the bubble injection unit includes: In addition, when water is supplied to the first supply unit by the selection unit, it has a bubble supply stop valve that stops the injection of the carbon dioxide. If it does in this way, it will become easy to control so that injection of carbon dioxide from a bubble injection part is performed only when it chooses to use a bubble injection part by the selection part.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram illustrating an outline of a configuration of a carbonated spring generation device 10 according to an embodiment of the present invention. As shown in FIG. 1, a carbonated spring generating apparatus 10 according to the present embodiment includes a bubble dissolving channel 12 for dissolving carbon dioxide bubbles in water, a carbon dioxide generating unit 20 and bubbles for injecting carbon dioxide bubbles into water. And an injection part 30.

  Specifically, for example, water injected from the water injection pipe unit 40 connected to the water supply is selected as one of the first supply unit 42 and the second supply unit 44 by a selection unit 48 as a three-way valve described later. Distributed or blocked. When water is passed through the first supply unit 42, carbon dioxide is generated by reacting with the tablet 24 as a raw material in the carbon dioxide generation unit 20 described later. The generated carbon dioxide is circulated through the bubble dissolution channel 12 by the production switching unit 46 as a three-way valve in a state of being mixed as bubbles in water.

  The switching generation unit 46 includes either the second supply unit 44 and the first discharge unit 18 provided at the end of the bubble dissolution channel 12 or the second discharge unit 50 that is discharged without passing through the bubble dissolution channel 12. One of them is selectively communicated with or cut off. When the selection unit 48 causes water to flow to the second supply unit 44 and when the generation switching unit 46 causes water to flow to the first discharge unit 18, bubbles are injected into the water by the bubble injection unit 30 described later. . Further, when water is circulated to the second supply unit 44 by the selection unit 48 and water is caused to flow to the second discharge unit 50 by the generation switching unit 46, the water injection pipe unit 40 is not generated without generating carbonated spring. The water poured from the second discharge part 50 is discharged as it is. In addition, in order to prevent the water flowing through the second supply unit 44 from flowing back into the carbon dioxide generation unit 20, the water discharged from the carbon dioxide supply unit 20 joins the second supply unit 44. A check valve 54 is provided in the vicinity.

  Among these, the bubble dissolving flow path 12 is a flow path for dissolving the carbon dioxide bubbles in water by allowing water into which the carbon dioxide bubbles are injected by the carbon dioxide generating section 20 or the bubble injecting section 30 to be described later. It is. That is, the carbon dioxide bubbles are dissolved by the plug flow method (tubular reaction method). In the bubble dissolution channel 12, when the viscosity resistance of carbon dioxide bubbles in the water at the flow rate of water flowing through the bubble dissolution channel 12 is the maximum diameter of the carbon dioxide bubbles in the bubble dissolution channel 12, that is, The effective diameter of the bubble dissolution channel 12 is determined so as to be equal to or greater than the buoyancy of the carbon dioxide bubbles when the effective diameter of the bubble dissolution channel 12 is reached. In this way, it is possible to prevent carbon dioxide bubbles from staying in the bubble dissolution channel 12 and the flow of carbon dioxide bubbles from becoming unstable. As a result, carbon dioxide can be suitably dissolved in water, and a carbonated spring having a necessary concentration can be obtained. In the following description, the term “water” includes water into which carbon dioxide bubbles have been injected, unless otherwise specified.

ここで、Ｄ_B は気泡の直径の最大値［ｍ］、ρは水の密度［ｋｇ／ｍ³ ］、ｇは重力加速度［ｍ・ｓ^-2］である。
一方、気泡溶解流路１２を流れる水の流量などを考慮すると、気泡溶解流路１２を流通する水は乱流であるとされ、その粘性抵抗Ｒは実験値による近似式として次式（２）のように得られる。

ここでＣ_D は気泡の受ける抵抗係数であり、

である。
Ｒｅは無次元数レイノルズ数であって、Ｒｅ＝Ｄｖρ／μであり、
Ｄは気泡溶解流路１２の有効径［ｍ］、ｖは水の流速［ｍ／ｓ］、μは水の粘度［Ｐａ・ｓ］である。
ここで、二酸化炭素気泡の直径が最大、すなわち気泡溶解流路１２の有効径となった場合に浮力Ｆと粘性抵抗Ｒとがつりあうとすれば、

であり、これを整理すれば、

となる。流速ｖは流量Ｈを気泡溶解流路１２の断面積（通過面積）で割ったものであるから、

であるので、上記（４）式を流量Ｈと気泡の直径Ｄ_B との関係として解析的に解くと図２のような関係が得られる。このようにして得られた関係から、炭酸泉生成装置１０に必要とされる水の流量Ｈ［ｍ³ ／ｓ］に基づいて、気泡溶解流路１２の有効径Ｄ［ｍ］が、二酸化炭素気泡の直径Ｄ_B の最大値に基づいて定められればよい。具体的には、図２における曲線よりも上の領域になるように、気泡溶解流路１２の有効径が設定されればよい。図２の例において、水が例えば流量Ｈ＝１０Ｌ／ｍｉｎとなるように気泡溶解流路１２を流通する場合、気泡溶解流路１２の有効径Ｄは約１６．５ｍｍ以下とされることがわかる。 Specifically, the buoyancy F is obtained by the following equation (1) from Archimedes' principle.

Here, D _B is the maximum value of the bubble diameter [m], ρ is the density of water [kg / m ^3], g is the acceleration of gravity [m · s ^-2].
On the other hand, considering the flow rate of water flowing through the bubble dissolution channel 12, the water flowing through the bubble dissolution channel 12 is considered to be turbulent, and its viscous resistance R is expressed by the following equation (2) as an approximate expression based on experimental values. Is obtained as follows.

Where C _D is the resistance coefficient that the bubble receives,

It is.
Re is a dimensionless number Reynolds number, and Re = Dvρ / μ,
D is the effective diameter [m] of the bubble dissolution channel 12, v is the flow rate of water [m / s], and μ is the viscosity of water [Pa · s].
Here, if the diameter of the carbon dioxide bubbles is the maximum, that is, when the effective diameter of the bubble dissolution channel 12 is reached, if the buoyancy F and the viscous resistance R are balanced,

And if you organize this,

It becomes. The flow velocity v is obtained by dividing the flow rate H by the cross-sectional area (passage area) of the bubble dissolution channel 12.

Since it is, the (4) equation when analytically solved as a relation between the diameter D _B of the flow rate H and bubbles relationship as shown in FIG. 2 is obtained. From the relationship obtained in this way, the effective diameter D [m] of the bubble dissolution channel 12 is determined based on the flow rate H [m ³ / s] of water required for the carbonated spring generation device 10. only to be determined on the basis of the maximum value of the diameter D _B. Specifically, the effective diameter of the bubble dissolution channel 12 may be set so as to be an area above the curve in FIG. In the example of FIG. 2, when water flows through the bubble dissolution channel 12 so that the flow rate becomes H = 10 L / min, for example, the effective diameter D of the bubble dissolution channel 12 is found to be about 16.5 mm or less. .

  In this embodiment, the effective diameter of the tube corresponds to the diameter of the circle when the cross section of the tube is circular, and the diameter of the circle having the same cross-sectional area in the case of other shapes. It is a concept corresponding to.

であり、これをＬについて解けば

となる。従って、気泡溶解流路１２が細いほど、すなわち気泡溶解流路１２の有効径Ｄが小さいほど気泡溶解流路１２の長さＬを長くしなければならない関係にある。具体的には、本件発明者らの実験によれば、流量Ｈ＝８Ｌ／ｍｉｎ、気泡溶解流路１２の有効径Ｄが１２ｍｍである場合には、例えば所望の二酸化炭素濃度として１０００ｐｐｍの炭酸泉を得るための通過時間Ｔは約４秒であるので、気泡溶解流路１２の長さＬは５ｍ程度以上必要である。なお、本明細書においては水は水もしくは湯を含む概念として用いられている。また、炭酸泉とは二酸化炭素が溶解した水を広く含む概念として用いられており、例えば２５０ｐｐｍ以上の二酸化炭素濃度を要求する温泉法の定める炭酸泉に限定されるものではない。なお、気泡溶解流路１２における水の流れが完全乱流とみなすことができる場合、気泡の抵抗係数Ｃ_D は、上述の（３）式を用いるのに代えてＣ_D ＝０．４４と近似してもよい。 On the other hand, in the present embodiment, since the carbon dioxide bubbles injected into the water are dissolved by the plug flow method, the length of the bubble dissolving flow path 12 is the same as that of the water in which the carbon dioxide bubbles are injected. The passage time (passing time) is determined to be equal to or longer than the time required to obtain a predetermined (desired) carbon dioxide dissolution concentration. Here, the passage time T [s] is expressed as the relationship between the length L [m] of the bubble dissolution channel 12 and the flow velocity v of the water flowing therethrough.

And solve this for L

It becomes. Accordingly, there is a relationship that the length L of the bubble dissolution channel 12 has to be increased as the bubble dissolution channel 12 is thinner, that is, the effective diameter D of the bubble dissolution channel 12 is smaller. Specifically, according to the experiments by the present inventors, when the flow rate H = 8 L / min and the effective diameter D of the bubble dissolution channel 12 is 12 mm, for example, a desired carbon dioxide concentration of 1000 ppm carbonate spring is used. Since the transit time T to obtain is about 4 seconds, the length L of the bubble dissolution channel 12 needs to be about 5 m or more. In the present specification, water is used as a concept including water or hot water. Further, the carbonated spring is used as a concept including a wide range of water in which carbon dioxide is dissolved, and is not limited to the carbonated spring defined by the hot spring method requiring a carbon dioxide concentration of 250 ppm or more, for example. When the water flow in the bubble dissolution channel 12 can be regarded as a complete turbulent flow, the bubble resistance coefficient C _D approximates to C _D = 0.44 instead of using the above-described equation (3). May be.

  The bubble dissolving channel 12 is provided with at least one throttle part 14, and the effective diameter of the throttle part 14 is smaller than the effective diameter of the bubble dissolving channel 12 where the throttle part 14 is not provided. FIG. 3 is a cross-sectional view in the length direction, that is, in the axial direction, of the bubble dissolving flow path 12 including one throttle portion 14.

When water passes through the narrowed portion 14 as shown in FIG. 3, the carbon dioxide bubbles injected into the water are finely divided. Therefore, since the contact area between the carbon dioxide bubbles and water increases, it is expected that the dissolution time will be shortened. According to the experiments of the inventors, where the effective diameter d ₁₂ of no throttle section portion to the bubble dissolving channel 12 is 12 mm, the effective diameter d ₁₄ is arranged five diaphragm portion 14 is 8 mm, 1. It was found that the bubble dissolution channel 12 of 5 m or less can achieve the same carbon dioxide dissolution concentration as the bubble dissolution channel 12, which required 5 m when there is no throttle 14. That is, by providing the throttle part 14 in the bubble dissolving channel 12, the length of the bubble dissolving channel 12 can be shortened. The length of the bubble dissolution channel 12 is such that when carbon dioxide bubbles and water are circulated, the bubble dissolution channel 12 takes only the time that carbon dioxide can be dissolved to the carbon dioxide concentration required for the carbonated spring to be generated. It is designed to be able to pass through the flow path 12.

Here, the effective diameter d ₁₂ of the bubble dissolving channel 12 12 mm, the flow rate H of water flowing bubbles dissolved channel 12 and 8L / min, with different multiple sizes of the effective diameter d ₁₄ of the throttle section 14 When the pressure difference between the portion without the restricting portion of the bubble dissolving channel 12 and the restricting portion 14 is calculated, the relationship as shown in FIG. 4 is obtained. Thus, it is extremely small that the pressure difference varies depending on the size of the effective diameter of the throttle portion 14. Therefore, it is considered that the carbon dioxide bubbles in the water become finer due to the speed difference, not the pressure difference between the throttle portion 14 and the portion without the throttle portion.

  A pressure holding unit 16 is provided on the downstream side of the throttle unit 14 in the bubble dissolution channel 12. The pressure holding unit 16 is, for example, a small-diameter or slit-shaped opening. When the end portion of the bubble dissolving channel 12 is largely opened, air enters from the end portion of the bubble dissolving channel 12 into the inside of the tube. Is provided to prevent the pressure from decreasing to atmospheric pressure. Thereby, the pressure of the water in the bubble dissolution channel 12 is maintained.

  In addition, when a plurality of throttle portions 14 are provided, the throttle portion 14 provided on the most downstream side of the bubble dissolution channel 12, that is, the pressure holding portion 16 side among the throttle portions 14. 14) and the shower head 18 serving as the first outlet from which the carbonated spring is discharged is preferably as short as possible. Specifically, even if the carbon dioxide gas bubbles refined by the final throttle portion 14 are excessive and remain undissolved, the bubbles remaining undissolved in the flow path from the final throttle portion 14 to the shower head 18 are partially It is desirable that the distance is such that it is discharged from the shower head 18 while being finely divided without being accumulated. In this way, bubbles that remain undissolved in the flow path from the final throttle portion 14 to the shower head 18 accumulate and become large bubbles, and the large bubbles are swept away at a time and pass through the shower head 18 to give a gurgling sound. It is possible to prevent an unpleasant sensation from being given to the user, such as occurrence of water or stagnant water flow. This is particularly effective when the hole through which the carbonated spring is discharged is small like the shower head 18.

  The size of the small-diameter opening in the pressure holding unit 16 is approximately calculated from Bernoulli's theorem, for example. Below, an example of the calculation method of the effective diameter of the pressure holding | maintenance part 16 is demonstrated. Note that the effective diameter and the passage area are in a one-to-one relationship, that is, if one of them is determined, the other is uniquely determined.

  FIG. 5 is a diagram schematically illustrating an aspect when the carbonated spring generating device 10 of the present embodiment is connected to the water supply. The water pipe 82 is branched from the water main pipe 80. Moreover, the water pipe 82 and the carbonated spring production | generation apparatus 10 are connected through the faucet etc. which are not shown in figure. That is, in the aspect of FIG. 5, water is supplied to the carbonated spring production device 10 by the water pressure of the water pipe 82. Although not shown in FIG. 5, a hot water heater may be provided between the water pipe 82 and the carbonated spring generating device 10, and hot water may be supplied to the carbonated spring generating device 10.

が成り立つというものである。 In such an embodiment, the loss of the flow path of the water pipe 82 or a water heater (not shown) is not negligible. For this reason, even when Bernoulli's theorem representing the relationship between the restriction and the flow rate is applied, it is necessary to consider friction loss, that is, viscous resistance. In addition, about the throttle part 14 of the carbonated spring production | generation apparatus 10, since the thickness in the distribution direction of water is very thin, loss can be disregarded. In general, Bernoulli's theorem (extended Bernoulli's theorem) that takes friction loss into consideration is that the fluid density at a certain point is ρ, the flow velocity is v [m / s], the pressure is P [Pa], and the height is z [m]. Then

Is true.

ここで、λ＝０．３１６４／Ｒｅ^0.25である。
（７）式を整理すると、
損失＝Ｂ・ｖ^1.75 （８）
Ｂ＝ｆ（Ｄ，Ｌ，ρ，μ）＝定数
となり、ここで、（８）式は、
損失≒Ｂ・ｖ²
のように近似する。 By the way, generally, if the Reynolds number Re is in the range of several tens to several hundreds, the flow is laminar, while if it is 1000 or more, it is considered to be turbulent. In the carbonated spring production device 10 of the present embodiment, the Reynolds number Re exceeds 10,000 when the flow rate, the pipe diameter, and the like are taken into consideration, and the internal flow becomes turbulent. The friction loss in turbulent flow (for example, B1 and B2 in the example of FIG. 5) can be calculated by the following equation (7) obtained experimentally.

Here, λ = 0.3164 / Re ^0.25 .
(7) Organizing the formula,
Loss = B ・ v ^1.75 (8)
B = f (D, L, ρ, μ) = constant, where equation (8) is
Loss ≒ B ・ v ²
It approximates as follows.

（９）式において右辺第１項は、一般的には動圧項と呼ばれる。図６は、この動水圧と流量Ｌとの関係を直径の異なる水道管８２について示した図である。図６から判る様に、流量が３０Ｌ／ｍｉｎであっても例えば配管径（直径）１２ｍｍの管であれば、動圧項の値はせいぜい０．０１ＭＰａである。一方、静水圧は例えば０．２ＭＰａのような値を取るので、（９）式において動圧項は無視できるものとする。なお、厚生労働省給水装置データベースの「給水装置標準計画・施工方法 ２．３設計使用水量の決定」において、シャワーの水量は８〜１５Ｌ／ｍｉｎであることが示されており、前述の流量３０Ｌ／ｍｉｎというのは、これを大きく上回る値、すなわち、シャワーを使用することを想定した場合に、想定される水量を大きく上回る場合に対応している。
以上より、流量Ｈ［ｍ³ ／ｓ］と損失係数、および圧力との関係は、
Ｐ₁ ≒Ｐ₂ ＋Ｂ₁ ｖ² （１０）
であり、すなわち
ｖ² ＝（Ｐ₁ −Ｐ₂ ）／Ｂ （１１）
となる。流速ｖと流量Ｈとを換算する管係数ｋを用いて、流量Ｈは、

のように表される。 The main pressure of the water main 80 is P ₁ [Pa], and the pressure in the vicinity of the connection portion of the water pipe 82 with the carbonated spring production device 10 (near the faucet not shown; the water injection pipe 40 (see FIG. 1)) is P ₂ [Pa]. And the loss coefficient from the main pipe 80 to the vicinity of the faucet is B ₁ , the relationship of the following equation (9) is established.

In the formula (9), the first term on the right side is generally called a dynamic pressure term. FIG. 6 is a diagram showing the relationship between the dynamic water pressure and the flow rate L for water pipes 82 having different diameters. As can be seen from FIG. 6, even if the flow rate is 30 L / min, for example, if the pipe has a pipe diameter (diameter) of 12 mm, the value of the dynamic pressure term is at most 0.01 MPa. On the other hand, since the hydrostatic pressure takes a value such as 0.2 MPa, for example, the dynamic pressure term can be ignored in the equation (9). In addition, in the “Water Supply Equipment Standard Plan / Construction Method 2.3 Determination of Design Water Use” in the Ministry of Health, Labor and Welfare water supply equipment database, it is shown that the amount of water in the shower is 8-15 L / min. The term “min” corresponds to a value that greatly exceeds this value, that is, a value that greatly exceeds the assumed amount of water when a shower is assumed to be used.
From the above, the relationship between the flow rate H [m ³ / s], the loss factor, and the pressure is
P ₁ ≈P ₂ + B ₁ v ² (10)
That is, v ² = (P ₁ −P ₂ ) / B (11)
It becomes. Using the pipe coefficient k that converts the flow velocity v and the flow rate H, the flow rate H is

It is expressed as

の関係が成り立つ。ここで、図５に示す様に水道本管８０、水道管８２、炭酸泉生成装置１０は連結されているので、式（１２）の流量Ｈと式（１３）の流量Ｈとは同一である。 Next, attention is focused on the flow of water in the carbonated spring production device 10 of the present embodiment. If the loss coefficient in terms of flow rate of the carbonated spring production device 10 is b ₂ and the water pressure just before the upstream side of the pressure holding unit 16 is P ₃ , as in the relationship between the water main 80 and the water pipe 82,

The relationship holds. Here, as shown in FIG. 5, since the water main 80, the water pipe 82, and the carbonated spring production | generation apparatus 10 are connected, the flow volume H of Formula (12) and the flow volume H of Formula (13) are the same.

の関係が成り立つ。ここで、圧力保持部１６の後ろ側（下流側）は大気圧＝０としている。上記（１２）式、（１３）式、および（１４）式より、Ｐ₂ 、Ｐ₃ 、Ｈはそれぞれ
Ｐ₂ ＝Ｐ₁ −ｂ₁ Ｈ² （１５）
Ｐ₃ ＝Ｐ₁ −（ｂ₁ ＋ｂ₂ ）Ｈ² （１６）

のように得られる。ここでω＝８ρ／π² である。逆にｄ２について解けば、

のように得られる。右辺の分子分母をＨ² で除して、

この式（１８）および式（１９）は、ある流量Ｈを満たす様な圧力保持部１６の有効径を得るために用いることができる。 Further, since the left sides of the expression (6) representing Bernoulli's theorem before and after the pressure holding unit 16 are equal,

The relationship holds. Here, the back side (downstream side) of the pressure holding unit 16 is set to atmospheric pressure = 0. From the above formulas (12), (13), and (14), P ₂ , P ₃ , and H are respectively P ₂ = P ₁ −b ₁ H ² (15)
P ₃ = P ₁ − (b ₁ + b ₂ ) H ² (16)

Is obtained as follows. Here, ω = 8ρ / π ² . Conversely, if you solve for d2,

Is obtained as follows. Divide the numerator denominator on the right side by H ² ,

Equations (18) and (19) can be used to obtain an effective diameter of the pressure holding unit 16 that satisfies a certain flow rate H.

When the pressure P ₁ of the water main 80 or the friction loss of the water flow path, specifically, the loss coefficient b1 of the water pipe 82 generally differs greatly from the value in the water supply at home or the like, the following two In order to satisfy the requirements, it is necessary to set the effective diameter d2 of the pressure holding unit 16 by using the formulas (15), (16), (19), and the like.
Requirement A: The water pressure P ₂ of the water pipe 82 is maintained at a predetermined pressure or higher.
Requirement B: The flow rate H is controlled to be within a predetermined flow rate range.
Here, the predetermined pressure in requirement A refers to switching on / off of the bubble supply valve 36 and the bubble supply stop valve 34 by being supplied to control ports of the bubble supply valve 36 and the bubble supply stop valve 34 which will be described later. The lowest water pressure possible. In addition, the predetermined flow rate range in the requirement B is, for example, 1000 ppm or more in view of the supply capacity of carbon dioxide bubbles in the carbon dioxide generation unit 20 or the bubble injection unit 30 described later, the length of the bubble dissolution channel 12, and the like. As described above, the upper limit of the flow rate is the amount of water necessary to realize the CO ₂ concentration of the carbonated spring required for the carbonated spring production device 10 (the amount of water that the CO ₂ concentration of the carbonated spring becomes lower than the required value if it is further increased) Further, the amount of water when carbon dioxide is substantially saturated in water is set as the lower limit of the flow rate. The reason why the lower limit is set in this way is that carbon dioxide bubbles that have not been completely melted when carbon dioxide is almost saturated in the carbonated spring become large bubbles in the carbonated spring and are wasted.

  In this embodiment, the pressure holding unit 16 has a thin plate shape, and as shown in FIG. 7, the bubble dissolving flow path 12 as a flexible hose and the shower head 18 as the first discharge unit are connected. In this case, it is provided by being connected with the thin plate-shaped pressure holding part 16 interposed therebetween. Specifically, in the example of FIG. 7, the screw portion provided at the joining member 70 provided at the end portion of the bubble dissolution channel 12 and the screw portion 76 provided at the end portion of the shower head 18 are screwed together. When being fixed, the pressure holding unit 16 and the O-rings 72 and 74 provided on both sides thereof are sandwiched between the end of the bubble dissolution channel 12 and the end of the shower head 18. It has become. The pressure holding unit 16 and the O-rings 72 and 74 may be integrated members.

Furthermore, as the pressure holding unit 16, a plurality of pressure holding units 16 having different effective diameters are prepared. For example, any one can be selected and attached by the user. Here, the pressure holding units 16 having different effective diameters are, for example, the pressure P ₁ of the water main 80 that can be assumed, the loss coefficient b ₁ of the water pipe 82, and the loss coefficient b ₂ of the carbonated spring generator 10. The effective diameter d ₂ is determined so as to satisfy the requirements A and B.

  As a result of investigations and experiments by the inventors of the present invention, it was found that the amount of water (flow rate H) supplied from the water supply or water heater is in the range of 5 L / min to 30 L / min. Therefore, the effective diameter (flow area) of the pressure holding unit 16 is determined so as to satisfy the requirements A and B when water having a flow rate in this range is supplied to the water injection pipe unit 40 of the carbonated spring production device 10. ing. In addition, when the flow rate H is less than 5 L / min, it is generally likely that it is difficult to discharge water in a shower form from the shower head 18.

  FIG. 8 is a diagram for explaining the relationship between the amount of water supplied to the carbonic acid generating device 10 and the amount of water generated in the corresponding carbonated spring in the case of an effective diameter of a certain pressure holding unit. As shown in FIG. 8, the increase in the amount of carbonated spring generated (discharged) is small with respect to the increase in the amount of water supplied. This is because the flow rate of water flowing through the bubble dissolution channel 12 is limited as a result of the restriction unit 14 being provided in the bubble dissolution channel 12 and the pressure holding unit 16 being provided as described above. Therefore, in the carbonated spring generating device 10 of the present embodiment, even when water is supplied to the carbonated spring generating device 10 in the range of the flow rate H, the upper limit water in the range of the flow rate H is supplied to the carbonated spring generating device 10. If carbon dioxide bubbles are generated on the assumption that they are supplied, the amount of carbon dioxide bubbles remaining without being completely melted can be reduced. In other words, even if a larger amount of water than the assumed water amount is supplied to the carbonated spring production device 10, the carbon dioxide concentration drop in the produced carbonated spring becomes gradual.

  In the carbonated spring production | generation apparatus 10 of a present Example, the bubble melt | dissolution flow path 12 is provided as flexible pipe | tubes, such as a hose, for example. As a result, when a shower head or the like is provided in the first discharge unit 18 that discharges carbonated springs, the first discharge unit 18 is connected to a housing that accommodates a carbon dioxide generation unit 20 or a bubble injection unit 30 described later. Since the hose as the flow path to be used can be the bubble dissolution flow path 12, the length of the pipe of the carbonated spring generating apparatus 10 can be further shortened, and the carbonated spring generating apparatus 10 can be made compact.

  Moreover, the carbonated spring production | generation apparatus 10 of a present Example is provided with the water current generator 56 in the bubble melt | dissolution flow path 12. FIG. The water flow generator 56 generates power by a turbine or the like that is rotated by water when the water flows through the bubble dissolution channel 12. An LED 58 is electrically connected to the water current generator 56 and can emit light when the water current generator 56 generates power. As a result, the LED 58 emits light when water flows through the bubble dissolution channel 12, so that the carbonated spring is generated when the generation switching unit 46 described later can switch whether or not the carbonated spring is generated. Can be easily confirmed visually.

  The carbon dioxide generator 20 includes a reaction chamber 22. The reaction chamber 22 is provided with a tablet 24 as a raw material. A plurality of tablets 24 may be stacked in the reaction chamber 22 at a time. The tablet 24 includes a substance that generates carbon dioxide by, for example, dissolving reaction in water, and specifically includes sodium bicarbonate, soda ash, malic acid, a binder, and the like. The reaction chamber 22 is sealed from the atmosphere so that the generated carbon dioxide does not escape into the atmosphere.

  Water flows into the reaction chamber 22 from the above-described three-way valve, which is the selection valve 48, and is discharged from an outlet portion 26 provided in the reaction chamber 22. At this time, the position of the outlet 26 is set so that the immersion water level of the tablet 24 in the reaction chamber 22 becomes a desired value. That is, by setting the immersion water level of the tablet 24 to a desired value, the reaction rate between the tablet 24 and water, that is, the production rate of carbon dioxide is determined according to the concentration of the carbonated spring to be produced in the carbonated spring production device 10. It is trying to become.

  In this way, since the tablet 24 is immersed to a predetermined water level, the water and the tablet 24 react at a desired speed, and carbon dioxide is generated. The generated carbon dioxide is discharged from the outlet 26 in a state of being mixed in the water as bubbles.

  The bubble injecting unit 30 injects carbon dioxide supplied from a carbon dioxide gas cylinder 38 connected to the bubble injecting unit 30 into the water flowing through the carbonated spring generating device 10 as bubbles. The bubble injection unit 30 includes a flow rate control valve 32, a bubble supply stop valve 34, a bubble supply valve 36, and the like for controlling the injection amount of carbon dioxide. A pipe is provided so that carbon dioxide supplied from the carbon dioxide gas cylinder 38 flows through the flow rate control valve 32, the bubble supply stop valve 34, and the bubble supply valve 36. Further, at the tip of the bubble supply valve 36, It is a pipe through which water flows, and is connected at a connection portion 37 upstream of the bubble dissolution channel 12. The connection part 37 of the second supply part 44 corresponds to an inlet for carbon dioxide bubbles, and the carbon dioxide bubbles are injected into the water at the connection part 37.

  Among these, the flow rate control valve 32 is for adjusting the flow rate and pressure of carbon dioxide supplied from the carbon dioxide gas cylinder 38, and the pressure is the concentration and amount of carbonate spring to be obtained by the carbonated spring generation device 10, the bubble dissolution flow. It is set in consideration of the length of the road 12 and the like.

  The bubble supply stop valve 34 is a so-called on / off valve for controlling whether carbon dioxide whose pressure is adjusted by the flow control valve 32 is supplied. The water pressure of the first connection portion 33 connected to the first supply portion 42 is supplied to the control port of the bubble supply stop valve 34. The bubble supply stop valve 34 is a normally open type valve, which is closed when a predetermined pressure is supplied to the control port, and is normally opened when no pressure is supplied to the control port. It has become. That is, when the selection unit 48 causes water to flow toward the first supply unit 42 and water pressure is supplied to the first supply unit 42, the bubble supply stop valve 34 is closed, and the bubbles from the bubble injection unit 30 are closed. Will not be injected. On the other hand, when the selection unit 48 allows water to flow to the second supply unit 44 side, water pressure is not applied to the control port of the first connection unit 33, that is, the bubble supply stop valve 34. Open and allow the carbon dioxide from the flow control valve 32 to pass to the bubble supply valve 36. In this way, when water flows through the first supply unit 42, carbon dioxide is generated by the carbon dioxide generation unit 20 described above, so that the injection of carbon dioxide bubbles by the bubble injection unit 30 is duplicated. This can be automatically prevented.

  The bubble supply valve 36 is a so-called on / off valve for controlling whether or not carbon dioxide has passed through the bubble supply stop valve 34. The control port of the bubble supply valve 36 is supplied with water pressure of water flowing between the generation switching unit 46 and the first discharge unit 18. The bubble supply valve 36 is a normally closed type valve, which opens when a predetermined pressure is supplied to the control port, but closes during normal times when no pressure is supplied to the control port. ing. Specifically, when the generation switching unit 46 is configured to pass water to the first discharge unit 18, that is, when the carbonated spring is set to generate, the bubble supply valve 36 opens, Bubbles are injected from the bubble injection unit 30. On the other hand, when the generation switching unit 46 performs water flow to the second discharge unit 50, that is, when generation of carbonated spring is not performed, the bubble control is performed from the water pressure at the second connection unit 35. Since there is no water pressure supplied to the valve 36, the bubble supply valve 36 is closed and the supply of carbon dioxide to the inlet 37 is stopped. In this way, the carbon dioxide bubbles are injected by the bubble injection unit 30 only when water is supplied from the generation switching unit 46 to the first discharge unit 18 from the bubble dissolution channel 12. Consumption of carbon dioxide is prevented when it is not necessary to produce it. A check valve 52 is provided between the bubble supply valve 36 and the connection portion 37 to prevent water from entering the bubble supply valve 36.

  Thus, in the bubble injection part 30 of the carbonated spring production device 10 of the present embodiment, since the bubble supply stop valve 34 and the bubble supply valve 36 are provided in series, the second supply part 44 is selected by the selection part 48. The bubbles of carbon dioxide supplied from the carbon dioxide gas cylinder 38 can be injected into the water only when the water is passed through the first discharge unit 18 by the generation switching unit 46. That is, when the selection unit 48 is communicated with the first supply unit 42 side and the generation switching unit 46 is communicated with the first discharge unit 18 side, the carbonate spring using the carbon dioxide generated by the carbon dioxide generation unit 20 is used. Generation occurs. Carbonate spring using carbon dioxide supplied from the carbon dioxide gas cylinder 38 by the bubble injection unit 30 when the selection unit 48 is communicated with the second supply unit 44 side and the generation switching unit 46 is communicated with the first discharge unit 18 side. Is generated. Further, even when the selection unit 48 is communicated with the second supply unit 44 side, the supply of carbon dioxide from the carbon dioxide gas cylinder 38 is stopped when the generation switching unit 46 is communicated with the second discharge unit 50 side. Is done.

  According to the carbonated spring generating apparatus 10 of the present embodiment, it has the bubble dissolving flow path 12 through which water mixed with carbon dioxide bubbles flows, and the carbonated spring is generated by dissolving the carbon dioxide bubbles in water. The bubble dissolution channel 12 includes at least one throttle part 14 that divides the carbon dioxide bubbles, and a pressure holding unit 16 that holds the water pressure in the bubble dissolution channel 12 at the output side end of the bubble dissolution channel 12. And the effective diameter of the bubble dissolving channel 12 is carbon dioxide when the viscosity resistance R of the bubble at the flow velocity v of water flowing through the bubble dissolving channel 12 is the maximum diameter D where the carbon dioxide bubbles are the effective diameter. The length of the bubble dissolution channel 12 is determined so as to be equal to or greater than the buoyancy F of the bubbles, and the carbon dioxide concentration in the water mixed with the carbon dioxide bubbles circulated through the bubble dissolution channel 12 is reduced to a predetermined concentration. Melting to reach The throttle unit 14 has an effective diameter smaller than that of the bubble dissolving flow path 12, and the pressure holding unit 16 reduces the water pressure inside the carbonated spring generating device 10 to dissolve the carbon dioxide bubbles. It has a passage area to maintain a pressure that can be urged. In this way, since the carbon dioxide bubbles in the water are divided by the throttle portion 14, the contact area between the carbon dioxide bubbles and the water increases, and the bubbles flow without being retained due to the effective diameter of the bubble dissolution channel 12. The contact time between carbon dioxide bubbles and water can be increased. Further, since the water pressure inside the carbonated spring production device 10 is maintained at a pressure that can promote the dissolution of carbon dioxide bubbles by the pressure holding unit 16, the carbon dioxide can be dissolved in water without increasing the water pressure by providing a pump or the like. Promoted. Further, the water in which carbon dioxide bubbles are mixed by the bubble dissolution channel 12 is circulated through the bubble dissolution channel for a dissolution time for the carbon dioxide concentration to reach a predetermined concentration, so that a carbonated spring having a predetermined concentration is obtained. . In this way, general waterworks (for example, those designed so that the minimum dynamic water pressure of the water distribution pipe at the place where the water pipe branches from the water supply pipe does not drop below 150 kPa (Ministry Ordinance Article 7 governing the technical level of water supply facilities) 8))), the pressure of the carbonated spring discharged from the shower head 18 and the amount of water (for example, for example, without the need to increase the water pressure by a pump or the like to dissolve carbon dioxide in water). A water amount of 8 to 15 L / min and a water pressure of 0.07 MPa (see water supply construction enforcement standards of each local government) can be secured.

  According to the carbonated spring generating device 10 of the present embodiment, when the flow rate of the water supplied to the carbonated spring generating device 10 is in the range of 5 L / min to 30 L / min, the passage area of the pressure holding unit 16 is the carbonated spring generating device. 10 is set so as to maintain the water pressure inside 10 at a pressure that can promote the dissolution of carbon dioxide bubbles, and is generally in the range of 5 L / min to 30 L / min, which is the amount of water supplied by a water supply or hot water supply device. In the case where water is supplied, the carbonated spring can be generated without increasing the water pressure by a pump or the like.

  According to the carbonated spring generating apparatus 10 of the present embodiment, the carbon dioxide bubbles divided by the final throttle unit 14 do not become so large that they interfere with the flow of the carbonated spring to the shower head 18 as the carbonated spring discharge part. As described above, since the distance between the throttle part and the carbonated spring discharge part is determined, even if the carbon dioxide bubbles finely divided by the final throttle part 14 remain undissolved, the final throttle part 14 In the carbonated spring flow path to the shower head 18, the undissolved bubbles are discharged and discharged from the discharge section while being finely divided, and the undissolved bubbles in the carbonated spring flow path from the final throttle section 14 to the shower head 18 Accumulate large bubbles, and the large bubbles are swept away at one time and pass through the discharge part, generating a gurgling sound or stagnant water flow That, it is possible to prevent an uncomfortable feeling to the user.

  According to the carbonated spring production device 10 of this embodiment, the length of the bubble dissolution channel 12 is such that the concentration of carbon dioxide is substantially saturated in the water in which the carbon dioxide bubbles circulated through the bubble dissolution channel 12 are mixed. Therefore, the carbonated spring having a substantially saturated carbon dioxide concentration can be generated without increasing the water pressure by a pump or the like.

  According to the carbonated spring generating device 10 of the present embodiment, the passage area of the pressure holding unit 16 can be changed. Therefore, even when the amount H of water supplied to the carbonated spring generating device 10 is different, the pressure holding unit 16 An appropriate passage area can be set by changing the passage area, and a carbonated spring can be generated without increasing the water pressure by a pump or the like.

  According to the carbonated spring production device 10 of the present embodiment, the pressure holding unit 16 has an effective diameter d2 that is smaller than the effective diameter d1 of the bubble dissolution channel 12, and includes a plurality of pressure holding units having different effective diameters. It can be selectively attached. For this reason, even if the water pressure P2 and the flow rate H of the water flowing into the carbonated spring generation device 10 are different, the water pressure P3 in the bubble dissolution channel 12 is prevented from dropping to atmospheric pressure. At the same time, since the water pressure for operating the bubble supply valve 36 and the bubble supply stop valve 34 can be secured, the operation of the bubble injection unit 30 can be suitably controlled by the bubble supply valve 36 and the bubble supply stop valve 34. .

  According to the carbonated spring production device 10 of the present embodiment, the bubble dissolving channel 12 is a flexible tube, and therefore the bubble dissolving channel 12 can be provided in a flexible tube such as a hose. Therefore, compared with the case where a hose is provided for simple water distribution in addition to the bubble dissolution channel, the length of the pipe can be shortened as a whole.

  According to the carbonated spring generating apparatus 10 of the present embodiment, the carbon dioxide generating unit 20 that generates carbon dioxide by reacting the tablet 24, which is a raw material material that generates carbon dioxide by reacting with water, with water, is generated in advance. A bubble injection unit 30 for injecting carbon dioxide in the carbon dioxide gas cylinder 38 into the water as bubbles, and one of the carbon dioxide generation unit 20 and the bubble injection unit 30 is selectively used as the carbon dioxide bubbles. It is generated by being executed. If it does in this way, it will become possible to select the generation source of a carbon dioxide bubble from either the carbon dioxide production part 20 or the bubble injection part 30.

  According to the carbonated spring generation device 10 of the present embodiment, the carbonated spring generation switching unit 46 includes a carbonated spring generation switching unit 46 that selectively executes whether or not to supply water to the bubble dissolution channel 12. Since the bubble supply valve 36 that enables carbon dioxide injection only when water is supplied to the bubble dissolving flow path 12 is provided, it is easy to inject carbon dioxide from the bubble injection portion 30 when no carbonated spring is generated. Can be stopped.

  According to the carbonated spring generation device 10 of the present embodiment, the first supply unit 42 that supplies water to the carbon dioxide generation unit 20, the second supply unit 44 that supplies water to the bubble injection unit 30, and the first supply unit 42. And a selection unit 48 that selectively supplies water to either one of the second supply unit 44 and the bubble injection unit 30 when the water is supplied to the first supply unit 42 by the selection unit 48. Since the bubble supply stop valve 34 for stopping the injection of carbon dioxide is provided, control is performed so that the injection of carbon dioxide from the bubble injection unit 30 is performed only when the selection unit 48 selects to use the bubble injection unit 30. Easy to do.

  Subsequently, another embodiment of the present invention will be described. In the following description, portions common to the embodiments are denoted by the same reference numerals and description thereof is omitted.

  FIGS. 9-11 is a figure explaining the other embodiment of the carbon dioxide production | generation part in the carbonated spring production | generation apparatus 10 of a present Example.

  The carbon dioxide generation unit 120 in FIG. 9 corresponds to the carbon dioxide generation unit 20 of the above-described first embodiment, and its outlet 126 is compared to the outlet 26 of the carbon dioxide generation unit 20 of the above-described embodiment. It differs in that it is provided above. In this way, the water level rises to a higher height in the reaction chamber 22, so that more tablets 24 can be immersed in water and the amount of carbon dioxide generated can be increased. Moreover, as shown in FIG. 9, it is also possible to immerse a plurality of tablets 24 simultaneously by stacking and arranging the tablets 24 in the vertical direction.

  10 corresponds to the carbon dioxide generator 20 of Example 1 described above, and a bypass channel 134 is provided so as to be parallel to the reaction chamber 22 and the flow of water. . In this way, part of the water circulated to the first supply unit 42 by the selection unit 48 passes through the bypass flow path 134, and thus does not pass through the reaction chamber 22. Therefore, the amount of water passing through the reaction chamber 22 is reduced as compared with the case where the bypass channel 134 is not provided. The amount of tablet 24 immersed in water is reduced, and the amount of carbon dioxide generated can be reduced.

  A carbon dioxide generation unit 140 in FIG. 11 corresponds to the carbon dioxide generation unit 20 in the above-described first embodiment, and in the same manner as the carbon dioxide generation unit 130 in FIG. This is common in that the bypass channel 134 is provided. Further, in the carbon dioxide generation unit 140 of FIG. 11, a flow rate control valve 146 for controlling the flow rate of water in the flow path is provided in the flow path for supplying water to the reaction chamber 22. By controlling the flow rate control valve 146, the amount of water flowing into the reaction chamber 22 can be further reduced as compared with the example of the carbon dioxide generation unit 130 of FIG. 10, and thus the amount of generated carbon dioxide is reduced. Can be controlled. In the example of FIG. 11, the flow control valve 146 is provided on the downstream side of the branch with the bypass flow path 134, but is not limited to such a mode, and is upstream of the position where the bypass flow path 134 branches. May be provided.

  According to the carbonated spring production apparatus 10 of the present embodiment, the raw material is used as a tablet 24 that is a solid material having a predetermined shape, and the carbon dioxide production unit 20 is sealed against the atmosphere so that the tablet 24 reacts with water. The reaction time of the tablet 24 can be controlled by adjusting the amount of water supplied to the reaction chamber 22 and adjusting the immersion water level of the tablet 24 in the reaction chamber 22. Therefore, the amount of carbon dioxide produced in the carbon dioxide production unit 20 can be suitably controlled.

  As mentioned above, although the Example of this invention was described in detail based on drawing, this invention is applied also in another aspect.

  For example, in the above-described embodiment, both the carbon dioxide generating unit 20 and the bubble injecting unit 30 for injecting carbon dioxide bubbles into water are provided. If the bubble dissolution channel 12 is provided, the carbonated spring can be generated without requiring pressurization by a pump or the like, and the effect of the present invention that the carbonated spring generator 10 can be reduced in size can be exhibited.

  In the above-described embodiment, the bubble dissolution channel 12 is provided in the flexible tube, but the present invention is not limited to this. Even if the bubble dissolution channel 12 is provided in a pipe having a certain shape, there is no problem. In this case, the bubble dissolution channel 12 may be provided in the housing of the carbonated spring generation device 10. Moreover, when the bubble dissolution channel 12 is provided in the pipe having the certain shape, the flexible pipe is not an essential requirement. Furthermore, although an example in which a shower head is provided in the first discharge unit 18 is shown, the present invention is not limited to this, and the shower head is not an essential requirement.

  In the above-described embodiment, a plurality of the throttle portions 14 are provided in the bubble dissolution channel 12, but the present invention is not limited to this. If at least one throttle part 14 is provided in the bubble dissolution channel 12, the effect of the present application can be produced.

  In the above-described embodiment, the shape of the pressure holding portion 16 is an example of a circular or slit-shaped opening, but is not limited to such a shape. The shape is not limited as long as the condition that air does not enter the bubble dissolution channel 12 is satisfied.

  In the above-described embodiment, the water current generator 56 and the LED 58 are provided in the flow path from the generation switching unit 46 to the first discharge unit 18, but these are not essential requirements and are not provided. The effect of the present invention can be obtained.

  In the above-described embodiment, the outlet 26 is provided at a predetermined height as shown in FIGS. 1 and 7, but is not limited thereto. For example, the height may be changeable by a method in which any one of the outlet portions provided at a plurality of heights is selectively opened.

  Moreover, in the above-mentioned Example, although the injection | pouring part 37 was provided in piping between the selection part 48 and the production | generation switching part 46, it is not limited to this. The same effect is produced from the second supply unit 44 to the front of the bubble dissolution channel 12.

  Further, in the above-described embodiment, the pressure holding unit 16 is sandwiched and attached by the O-rings 72 and 74 between the end of the bubble dissolution channel 12 and the shower head 18, but is not limited thereto. It is not limited to an O-ring as long as it prevents water leakage from carbonated springs or inflow of air from outside.

  Further, in the above-described embodiment, the pressure holding portion 16 can be changed in its passage area by attaching one selected from the plurality of pressure holding portions 16 having different effective diameters. It is not limited to such an aspect. Specifically, for example, as the pressure holding unit, a valve whose passage area, that is, an effective diameter can be continuously changed may be provided as the pressure holding unit.

  Moreover, in the above-mentioned Example, although the effective diameter (passage area) of the pressure holding part 16 was changed so that the said requirements A and B were satisfy | filled based on the amount of water H which flows into the carbonated spring production | generation apparatus 10, this way It is not restricted to a certain aspect. For example, instead of or in addition to the effective diameter of the pressure holding unit 16, the amount of carbon dioxide bubbles generated by the carbon dioxide generation unit 20 or the bubble injection unit 30 is set so as to satisfy the requirements A and B. May be. In this way, as in the above-described embodiment, the carbon dioxide bubbles that are not completely dissolved and are wasted as much as possible with respect to the water having the above flow rate can be reduced as much as possible. Carbonic acid satisfying the carbon dioxide concentration can be obtained.

  Although no mention was made of the water temperature in the above-described embodiment, the design of the carbonated spring generating device 10, specifically considering the temperature of the carbonated spring to be generated or the temperature of the water supplied to the carbonated spring generating device 10, specifically The length of the bubble dissolution channel 12, the amount of carbon dioxide injected by the carbon dioxide generation unit 20, and the bubble injection unit 30 may be changed. That is, the higher the water temperature, the more difficult the carbon dioxide bubbles to melt. Therefore, the higher the water temperature, the longer the length of the bubble dissolution channel 12, or the carbon dioxide generated by the carbon dioxide generation unit 20 and the bubble injection unit 30. It is possible to reduce the amount of In this way, even if the water temperature is high, the carbon dioxide concentration in the carbonated spring can be secured, or carbon dioxide that is not melted and is wasted can be reduced.

  In the above-described embodiment, the example in which the carbon dioxide concentration of the carbonated spring required for the carbonated spring generating apparatus 10 is 1000 ppm has been described, but the present invention is not limited to this. Generally, the higher the concentration of carbonated spring used for bathing, the better. Therefore, a carbonated spring having a concentration at which the carbon dioxide concentration is substantially saturated can be generated. Here, the substantially saturated concentration (substantially saturated concentration) means a concentration that can be regarded as substantially reaching the saturated concentration, and is determined to be, for example, about 95% or more of the saturated concentration. In other words, the concept may include a saturated concentration. This is because the dissolution rate is remarkably reduced in the vicinity of the saturation concentration, so increasing the concentration further requires a considerable time than before, but if the concentration can be regarded as substantially reaching the saturation concentration. Since the effect equivalent to the case of the saturated concentration can be obtained, the concentration is set in consideration of these. In this case, since the amount of carbon dioxide dissolved differs depending on the temperature of the water supplied to the carbonated spring generator 10 as described above, the carbonated spring generator 10 can be designed in consideration of this.

It is a figure explaining an example of the composition of the carbonated spring generating device of the present invention. It is a figure explaining the relationship between the pipe diameter (effective diameter) of the bubble dissolution channel for the bubble in water to flow without staying, and its flow rate. It is a figure explaining the cross section of the part containing the throttle part in a bubble dissolution channel. It is a figure explaining the pressure difference of the part without a restricting part of a bubble dissolution channel with respect to the effective diameter of a restricting part, and a restricting part. It is a figure explaining each variable in a pressure holding part and a bubble dissolution channel adjacent to it. It is the figure represented as a relationship between the pressure difference of a pressure holding part and the bubble dissolution channel adjacent to it, and the maximum diameter of a pressure holding part. It is a figure explaining an example of composition of a pressure maintenance part. It is a figure explaining the relationship between the amount of water supplied to a carbonated spring production | generation apparatus, and the production amount of carbonated spring. It is a figure explaining an example of the structure of the carbon-dioxide production | generation part in another Example of this invention. It is a figure explaining an example of the structure of the carbon dioxide production part in another example of the present invention. It is a figure explaining an example of the structure of the carbon dioxide production part in another example of the present invention.

10: Carbonate spring production device 12: Bubble dissolution channel 14: Restriction part 16: Pressure holding part 20, 120, 130, 140: Carbon dioxide production part 22: Reaction chamber 24: Tablet 26: Outlet part 30: Bubble injection part 34: Bubble supply stop valve 36: Bubble supply valve 37: Injection port 40: Water injection pipe section 42: First supply section 44: Second supply section 46: Carbonate spring generation switching section 48: Selection section

Claims (11)

A carbonated spring generating device that has a bubble dissolving channel through which water mixed with carbon dioxide bubbles flows, and generates carbonated spring by dissolving the carbon dioxide bubbles in the water,
The bubble dissolution channel is provided at least one throttle part for dividing the carbon dioxide bubbles and downstream of the bubble dissolution channel with respect to the throttle part, and maintains the water pressure in the bubble dissolution channel. A pressure holding part,
The effective diameter of the bubble dissolving channel is the buoyancy of the carbon dioxide bubble when the viscosity resistance of the bubble at the flow velocity of the water flowing through the bubble dissolving channel is the maximum diameter of the carbon dioxide bubble. It is determined to be above,
The length of the bubble dissolution channel is such that the dissolution time for the carbon dioxide concentration to reach a predetermined concentration is ensured in the water mixed with the carbon dioxide bubbles circulated through the bubble dissolution channel. Defined,
The narrowed portion has an effective diameter smaller than that of the bubble dissolution channel,
The pressure holding unit has a passage area for maintaining the water pressure inside the carbonated spring generating apparatus at a pressure capable of promoting the dissolution of the carbon dioxide bubbles;
A carbonated spring generator. When the flow rate of the water supplied to the carbonated spring generating device is in the range of 5 L / min to 30 L / min, the passage area of the pressure holding unit is set so that the water pressure inside the carbonated spring generating device is dissolved in the carbon dioxide bubbles. The carbonated spring generating device according to claim 1, wherein the device is set so as to maintain a pressure that can be urged. The distance between the throttle part and the carbonated spring discharge part is determined so that the carbon dioxide bubbles divided by the throttle part do not become so large that they interfere with the flow of carbonated spring to the carbonated spring discharge part. The carbonated spring production device according to claim 1 or 2, wherein The length of the bubble dissolution channel is such that the dissolution time for the carbon dioxide concentration to reach a substantially saturated concentration is ensured in the water mixed with the carbon dioxide bubbles circulated through the bubble dissolution channel. What is stipulated in
The carbonated spring production | generation apparatus of any one of Claim 1 thru | or 3 characterized by these.   The carbonated spring generating device according to any one of claims 1 to 4, wherein a passage area of the pressure holding unit is changeable.   The carbonated spring production device according to any one of claims 1 to 5, wherein the pressure holding unit can be selectively attached from a plurality of pressure holding units having different passage areas.   The carbonated spring generating apparatus according to any one of claims 1 to 6, wherein the bubble dissolving channel is a flexible tube. A carbon dioxide generating unit for generating carbon dioxide by reacting water with a raw material that generates carbon dioxide by reacting with water;
A bubble injection part for injecting carbon dioxide produced in advance as bubbles in water,
The carbon dioxide bubbles are generated by selectively executing one of the carbon dioxide generating unit and the bubble injecting unit,
The carbonated spring production | generation apparatus of any one of Claim 1 thru | or 7 characterized by these. The raw material is a solid having a predetermined shape,
The carbon dioxide generating unit is sealed against the atmosphere and includes a reaction chamber in which the raw material and water are reacted.
The amount of water supplied to the reaction chamber can be adjusted, and the immersion water level of the raw material in the reaction chamber can be adjusted to control the reaction time of the raw material. Item 9. The carbonated spring generating device according to Item 8. A carbonated spring generation switching unit that selectively executes whether or not to supply water to the bubble dissolution channel,
The bubble injection unit has a bubble supply valve that enables injection of the carbon dioxide only when water is supplied to the bubble dissolution channel by the carbonated spring generation switching unit,
The carbonated spring production | generation apparatus of Claim 8 or 9 characterized by these. Selected as one of a first supply unit that supplies the water to the carbon dioxide generation unit, a second supply unit that supplies the water to the bubble injection unit, and the first supply unit and the second supply unit And a selection unit for supplying the water.
The bubble injection unit has a bubble supply stop valve that stops injection of the carbon dioxide when water is supplied to the first supply unit by the selection unit;
The carbonated spring production | generation apparatus of any one of Claims 8 thru | or 10 characterized by these.

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