JP2005218571A - Carbonated water manufacturing method and apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carbonated water manufacturing method stably emitting carbon dioxide gas without being converted into frozen carbon dioxide in a carbon dioxide gas container and a carbon dioxide channel and to provide a carbonated water manufacturing apparatus efficiently providing carbonated water. <P>SOLUTION: This manufacturing method dissolves carbon dioxide gas in water in a water tank using a carbon dioxide gas dissolving vessel having the carbon dioxide gas container, a carbon dioxide gas flow rate adjuster and a diffusion part. Carbon dioxide gas is diffused from the diffusion part into water in the water tank with a part or the whole body of at least one of the carbon dioxide gas container or the carbon dioxide gas flow rate adjuster dipped in water in the water tank. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a carbonated water production method for carbonated water in a water tank in a short time, and a carbonated water production apparatus capable of carbonated warm water in a water tank easily at low cost.

  When bathing in warm water containing carbon dioxide gas such as carbonated springs, the bathing effect such as vasodilation and difficulty in cooling hot water is generally well known, and drugs and devices that can obtain bath carbonated water are commercially available.

  As a method for obtaining hot carbonated water containing carbon dioxide, a method is known in which carbonated acid and carbonate that generate carbon dioxide by a chemical reaction are formed into tablets, and the tablets are poured into warm water to obtain hot carbonated water. (Patent Document 1).

  Moreover, the carbonated water manufacturing apparatus which dissolves a carbon dioxide gas by passing the water in a water tank to a carbon dioxide addition part with a submersible pump is known (patent document 2).

  In addition, the stored water and foaming chemicals are introduced into the container to generate gas, and after the gas is dissolved in the stored water, the stored water is discharged from the discharge port of the container toward the human body, and the water pressure decreases. An apparatus for generating fine bubbles in bath water using a change in solubility of a gas generated when performing the process is known (Patent Document 3).

  However, although the method of Patent Document 1 can obtain carbonated water by a simple operation of simply inserting a tablet, since a drug is directly introduced into water, a reaction by-product other than carbon dioxide gas or tableting is performed. For this reason, there is a drawback that impurities such as molding aids remain in water.

  In the method of Patent Document 2, a submersible pump and a gas dissolver are directly connected, and a gas cylinder of 2 kg to 5 kg is proposed, and the apparatus is designed to reduce the size of the apparatus. There is room for further improving the convenience of the user, such as being necessary, or installing gas cylinders in the bathroom, or work for installing outside the bathroom.

  Moreover, although the method of patent document 3 becomes a structure in which the apparatus structure was simple and the user's convenience was considered, it was not preferable at the surface by which the liquid with which the chemical | medical agent remained was discharged toward the human body. Moreover, although the structure which discharges only gas is proposed, there exists a possibility of contacting a body in the case of discarding the chemical | medical solution with which the chemical | medical agent which remains in a container remains.

Further, when a high-pressure liquefied carbon dioxide cylinder filled with liquefied carbon dioxide is used as a carbon dioxide gas source, the temperature decreases as the carbon dioxide gas flow rate increases, and the carbon dioxide gas becomes dry ice in the carbon dioxide gas flow path. The gas flow rate sometimes became unstable.
In order to eliminate the flow rate instability due to the dry formation of carbon dioxide, it was necessary to use a special gas flow controller such as a gas flow controller with a heater or a gas flow controller with a fin.
JP-A-8-333236 JP-A-8-215271 JP 2003-235926 A

The present invention relates to a method for producing carbonated water that can stably release carbon dioxide gas without forming dry ice in a carbon dioxide gas container and a carbon dioxide gas flow path, and carbon dioxide that can efficiently obtain carbonated water. An object is to provide a water production apparatus.

  That is, the first gist of the present invention is a method for producing carbonated water in which carbon dioxide gas is dissolved in water in a water tank using a carbon dioxide gas dissolver having a carbon dioxide gas container, a carbon dioxide gas flow controller, and an air diffuser. And at least one of the carbon dioxide gas container and the carbon dioxide gas flow controller is partly or wholly immersed in the water in the water tank, and the carbon dioxide gas is supplied from the diffuser to the water in the water tank. This is a method for producing carbonated water that diffuses water.

  The second gist of the present invention is an apparatus for producing carbonated water having a carbon dioxide container, a carbon dioxide flow rate regulator, and an air diffuser provided with a rotating body rotated by carbon dioxide.

  The carbon dioxide spring manufacturing method of the present invention uses a carbon dioxide gas container, a carbon dioxide gas flow controller, and a carbon dioxide gas dissolver having an air diffuser to dissolve carbon dioxide in water in a water tank. At least one of the gas flow rate regulators diffuses carbon dioxide gas from the air diffuser into the water in the water tank while a part or all of the gas flow regulator is immersed in the water in the water tank. By adopting such a configuration, the carbon dioxide gas is released into the water without making the carbon dioxide gas into dry ice in the carbon dioxide gas container and the carbon dioxide gas flow path while being a very simple configuration and simple operation. And carbonated water can be obtained efficiently.

  Further, the carbonated spring production apparatus of the present invention has a carbon dioxide gas container, a carbon dioxide gas flow controller, and an air diffuser provided with a rotating body that rotates by carbon dioxide gas. Gas can be dissolved in water.

Embodiments of the present invention will be described below.
FIG. 1 is a diagram schematically showing an apparatus for producing carbonated water according to the present invention.

  In FIG. 1, 1 is a carbon dioxide gas container, 2 is a gas flow controller, and 3 is an air diffuser. The carbon dioxide gas in the carbon dioxide container 1 is diffused from the air diffuser 3 by adjusting the discharge flow rate by the gas flow rate regulator 2. Specifically, it is preferable that the gas flow rate regulator 2 uses a pressure regulator generally called a pressure reducing valve.

In addition, using a pressure regulator that is fixed so as to reduce the gas pressure to a certain level may cause inconveniences such as an excessive change in gas pressure due to an accidental change in gas pressure, or a loss of the required amount of gas. Is more preferable.
It is also possible to use a constant flow valve whose opening degree changes with pressure. Furthermore, a pressure reducing valve and a constant flow valve can be used in combination.

  The diffuser 3 is not particularly limited as long as it can diffuse carbon dioxide in water. For example, metal or resin sintered bodies generally called air stones, porous flat membranes and hollow fiber membranes, and diffuser tubes wrapped with rubber with slits on cylinders with holes on the sides It is done.

FIG. 2 is a schematic diagram showing an example of an air diffuser used in the present invention.
2A is an example in which the sintered body 4 is used as an air diffuser, B in FIG. 2 is an example in which a porous flat membrane 5 is used as an air diffuser, and C in FIG. 2 is a porous hollow An example in which the thread film 6 is used as an air diffuser, D and D ′ in FIG. 2 use an air diffuser 9 in which a rubber 8 provided with a slit is wound on a cylinder 7 having a hole in the side as an air diffuser. Examples (D shows before assembly of members, D ′ shows after assembly of members) are shown.
In the figure, 10 common to A, B, C, D, and D ′ is a connection part with a gas flow rate regulator (not shown), and carbon dioxide gas that has passed through the connection part 10 enters the water from the surface body of each diffuser part. Aerated.

Here, it is preferable to arrange a rotating body that rotates by carbon dioxide gas in the air diffuser 3 because the dissolution efficiency of carbon dioxide gas is improved.
For example, as shown in FIG. 3, the rotating body includes a rotating body that rotates due to the buoyancy of bubbles and is attached to the upper part of the air diffuser.

In FIG. 3, 2 and 3 show the same thing as the gas flow regulator 2 and the aeration part 3 shown in FIG. A portion indicated by a dotted line in FIG. 3 is a frame 12 that supports a propeller 11 that is rotatably mounted. The frame 12 is configured by a lattice-like member or a rod-like member, and is arranged around the air diffuser 3 and the propeller 11. Prevents stagnation in the dispersion and diffusion of bubbles and water.
The carbon dioxide gas diffused from the air diffuser 3 rises in the form of bubbles, contacts the propeller, and rotates the propeller. Due to the rotation of the propeller, the water around the air diffuser 3 is agitated, and the distribution of the carbon dioxide concentration in the water is averaged.

FIG. 4 is a schematic view showing another example of a rotating body rotated by carbon dioxide gas, and the aeration unit 3 itself is configured to rotate. E in FIG. 4 shows an example using a rod-like air diffuser 3, and F in FIG. 4 shows an example using a disk-like air diffuser 3. In the figure, 10 common to E and F is a connecting portion with a gas flow rate regulator (not shown).
Here, the air diffuser 3 is rotatable in the direction of the arrow in the figure, and a jet port 13 is provided in the rotational direction. The carbon dioxide gas that has passed through the connecting portion is ejected from the ejection port 13 provided in the diffuser 3, and the entire diffuser 3 is rotated by the jet power. By doing so, since carbon dioxide gas is ejected in the horizontal direction, it is possible to lengthen the time until the bubbles reach the water surface and the movement distance of the bubbles in the water, and the carbon dioxide gas easily dissolves in the water. .
Further, as shown in FIG. 4F, by providing the fins 14 that can stir the water by rotation, the water around the air diffuser 3 is stirred, and the distribution of carbon dioxide concentration in the water is averaged. Is done.

In the carbonated water production method of the present invention, at least one of the carbon dioxide gas container 1 and the carbon dioxide gas flow rate regulator 2 is immersed in the water in the aquarium, and at least one of the carbon dioxide gas flow rate regulators 2 from the air diffuser 3 into the aquarium. Aeration of carbon dioxide in water.
What is immersed in water can be a part or all of the carbon dioxide container 1 or part or all of the carbon dioxide flow rate regulator 2. In addition, both the carbon dioxide container 1 and the carbon dioxide flow rate controller 2 can be partially immersed in water.

  It is more preferable to immerse all of the carbon dioxide container 1 and the carbon dioxide flow rate regulator 2 in water because it can more effectively prevent the carbon dioxide gas from becoming dry ice. Furthermore, it is more preferable to immerse the entire carbon dioxide dissolver in water, including the diffuser 3 and other connecting parts. By immersing the entire carbon dioxide gas dissolver in water, heat exchange occurs with external water, and carbon dioxide gas can be prevented from becoming dry ice due to a decrease in temperature in the carbon dioxide gas flow path. Carbon dioxide can be suitably discharged into water without the need for a special gas flow controller.

  FIG. 6 shows changes in the carbon dioxide gas flow rate when carbon dioxide gas is released at a flow rate of 5 L / min from the carbon dioxide gas container 1 composed of a 74 g liquefied carbon dioxide gas cylinder. At this time, the ambient temperature of the carbon dioxide container 1 was set to 20 ° C. and 35 ° C. The liquefied carbon dioxide gas 74g is about 38 L when vaporized, and all carbon dioxide gas is released in 7 to 8 minutes when the carbon dioxide gas is released at a flow rate of 5 L / min.

  As can be seen from FIG. 6, when carbon dioxide is released at 35 ° C., the flow rate of carbon dioxide is 0 L / min in about 8 minutes, and the carbon dioxide is vaporized without stagnation and quickly released. On the other hand, in the case of 20 ° C., the carbon dioxide flow rate is unstablely reduced after about 6 minutes, and then carbon dioxide is released at a flow rate of 1 L / min or less over a further 10 minutes. That is, when the cylinder temperature is 20 ° C., the carbon dioxide gas becomes dry ice in the cylinder due to the temperature drop when the liquefied carbon dioxide vaporizes, and the carbon dioxide gas can be released only at the vaporization rate of the dry ice. The carbon dioxide gas can be quickly released by increasing the carbon dioxide gas cylinder temperature.

  Therefore, the temperature of water is preferably 25 ° C. or higher and more preferably 35 ° C. or higher in order to prevent carbon dioxide gas from becoming dry ice. On the other hand, the upper limit of the temperature is a temperature suitable for foot bathing or bathing, preferably 45 ° C. or lower, more preferably 42 ° C. or lower.

  As a water tank to be used, a bathtub capable of bathing such as full body bathing, half body bathing, foot bathing and the like can be used. By simply converting the bath water into carbonated warm water, the carbonated warm water bath can be enjoyed easily. The size and the like are not particularly limited.

As the carbon dioxide gas container 1, it is preferable to use a high-pressure liquefied carbon dioxide gas cylinder. This is because the high-pressure liquefied carbon dioxide gas cylinder can use a large amount of carbon dioxide gas with a small volume, and since it has a high density, the density of the entire apparatus can be increased, and when the carbon dioxide gas dissolver is immersed in the water tank, In addition, the carbon dioxide gas can be diffused into the water in a state where the carbon dioxide is surely submerged in the bottom of the water.
It is preferable that the density of the entire carbonated water production apparatus is heavier than the water in the water tank before and after the release of carbon dioxide.

When the carbon dioxide gas container 1 is covered with a foamable material, it is preferable that the impact on the bottom of the water tank can be reduced when it is put into the water tank.
Moreover, since the liquefied carbon dioxide gas is not preferable when the liquefied carbon dioxide gas is in contact with the discharge port of the carbon dioxide gas container 1, it is preferable to use the carbonated water producing apparatus that is injecting carbon dioxide gas.

The capacity of the carbon dioxide container 1 is such that when one carbon dioxide container 1 is used a plurality of times, the carbon dioxide container 1 becomes large, and an open / close cock that closes the gas flow path other than when it is used, Since necessary members such as a pressure gauge for confirming the amount of carbon dioxide increase, the structure tends to be complicated and the price tends to increase.
On the other hand, when it is set to use a plurality of carbon dioxide containers, the concentration of carbon dioxide in water can be increased depending on the number of carbon dioxide containers to be used. However, the carbon dioxide container tends to be troublesome to replace.
Accordingly, the capacity of the carbon dioxide gas container 1 is preferably a capacity that can be used up in one carbonated water production operation.

  Hereinafter, the method for producing carbonated water according to the present invention will be described in detail with reference to examples.

  The sintered body shown in FIG. 2A was used as the air diffuser to produce the carbonated water production apparatus shown in FIG. At this time, as the carbon dioxide gas container 1, a 74 g high-pressure liquefied carbon dioxide gas container was used. Next, 100 L of 38 ° C. water was put into a water tank having an internal size of 50 cm in depth and 50 cm in width to a depth of 40 cm. Carbon dioxide gas was spouted at 5 L / min in a state where the entire carbonated water production apparatus was immersed in a water tank containing water.

  FIG. 5 is a diagram schematically showing the state at this time. A water tank 15 is filled with water, and carbon dioxide bubbles 18 are dispersed in water from the air diffuser 3 of the carbonated water production apparatus 16 immersed in water. Reference numeral 17 denotes a hakama-like stand attached to the carbon dioxide gas container so that the carbonated water production apparatus stands upright.

Thus, after about 8 minutes, the carbon dioxide in the carbon dioxide container was exhausted and the ejection of carbon dioxide was stopped. After the carbon dioxide gas jetting stopped, the carbon dioxide gas concentration in the water tank was measured and found to be 340 ppm. At this time, the total weight of the carbonated water production apparatus was 580 g, the volume was 250 cm ³ , and the density was 2.320 g / cm ³ . The weight of the entire carbonated water manufacturing apparatus when the gas carbon dioxide container is all released at 506 g, the volume is 250 cm ^3, the density was 2.024g / cm ^3. The density of water at 38 ° C. was 0.992 g / cm ³ , and the density of the carbonated water production apparatus was heavier than the water in the water tank before and after releasing all the carbon dioxide.

<Example 2>
The rotating disk shown in FIG. 4F is used as the air diffuser, and the same operation as in Example 1 is performed except that 54 L of 38 ° C. water is placed in a 30 cm deep and 45 cm wide bathtub as the water tank and the water depth is 40 cm. It was.

When the carbon dioxide gas concentration in the bathtub was measured after the carbon dioxide gas jetting stopped, it was 550 ppm. At this time, the total weight of the carbonated water production apparatus was 610 g, the volume was 270 cm ³ , and the density was 2.259 g / cm ³ . Further, when all the gas in the carbon dioxide container was released, the total weight of the carbonated water production apparatus was 536 g, the volume was 270 cm ³ , and the density was 1.985 g / cm ³ . The density of water at 38 ° C. was 0.992 g / cm ³ , and the density of the carbonated water production apparatus was heavier than the water in the water tank before and after releasing all the carbon dioxide.

It is a schematic diagram which shows an example of the carbonated water manufacturing apparatus of this invention. It is a schematic diagram which shows an example of the aeration part used for the carbonated water manufacturing apparatus of this invention. It is a schematic diagram which shows an example of the diffuser to which the rotary body used for the carbonated water manufacturing apparatus of this invention was attached. It is a schematic diagram which shows an example of the rotating diffuser used for the carbonated water manufacturing apparatus of this invention. It is a schematic diagram which shows an example of the state of implementation of the carbonated water manufacturing method by this invention. It is a graph which shows the influence of the temperature at the time of discharging | emitting carbon dioxide from a carbon dioxide container.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Carbon dioxide container 2 Gas flow controller 3 Air diffuser 4 Sintered body 5 Porous flat membrane 6 Porous hollow fiber membrane 7 Tube with a hole in the side surface 8 Rubber with slit 9 Air diffuser tube 10 Connection portion 11 Propeller 12 Frame 13 Spout 14 Fin 15 Water tank 16 Carbonated water production equipment 17 units 18 Carbon dioxide bubbles

Claims (3)

  A method for producing carbonated water in which carbon dioxide gas is dissolved in water in a water tank using a carbon dioxide gas dissolver having a carbon dioxide gas container, a carbon dioxide gas flow controller, and an air diffuser, the carbon dioxide gas container, A method for producing carbonated water, wherein at least one of the carbon dioxide gas flow controllers is partly or wholly immersed in water in the water tank, and carbon dioxide gas is diffused from the air diffuser into the water in the water tank.   The carbonated water manufacturing method according to claim 1, wherein the air diffuser includes a rotating body that rotates by carbon dioxide gas.   An apparatus for producing carbonated water having a carbon dioxide gas container, a carbon dioxide gas flow controller, and an air diffuser provided with a rotating body rotated by carbon dioxide gas.

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