JP2011062669A - Drinking water, using method of drinking water, refining method of drinking water and drinking water generating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide drinking water which stably retains gas in a liquid for a long time, and which keeps functions such as bactericidal performance, palatability, a bioactive factor and the like. <P>SOLUTION: In the drinking water, gas, as nanosized air bubbles, is present in a saturated dissolved water of the gas. Also, a hydrogen bond distance of water molecules present at the interface with the air bubbles is shorter than the hydrogen bond distance at normal temperatures and normal pressures. The drinking water is used by generating gas inside the drinking water by breaking air bubbles with external forces such as pressure change, temperature change, impact waves and ultrasonic waves applied to the drinking water; or the drinking water is refined by separating gas. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to drinking water, a method for using drinking water, a method for purifying drinking water, and a drinking water generating device, which stably retain gas in water to enhance sterilization performance or enhance palatability.

  Conventionally, it is known that tap water, well water, ground water, river water, and the like are sterilized and sterilized to produce drinking water. Among these, a method for sterilizing water using a chemical such as a chlorinated chemical is widely known, but there is a concern about safety to the human body, and a safe sterilization method is desired. Water heat treatment is an old sterilization method that does not use chemicals, but in order to obtain a complete sterilization effect, it is necessary to heat the water at a high temperature over a long period of time. It cannot be sterilized. In addition, although the bacteria are killed by sterilization immediately after heating, the sterilization effect is not sustained because water is easily contaminated by the subsequent invasion of the bacteria.

  Under such circumstances, a method that can sterilize and sterilize water safely and easily without using a drug has been proposed. For example, Patent Literature 1 discloses a method of sterilizing active oxygen generated by irradiating ultraviolet rays by bringing it into contact with water. Patent Document 2 discloses a method of sterilizing by applying a voltage to water. Patent Document 3 discloses a method of sterilizing water by irradiating ultrasonic waves to generate cavitation bubbles. According to these methods, it is possible to perform sterilization while flowing water without using chemicals, and water can be sterilized safely.

  However, these methods have a problem that after sterilization, water may be contaminated by bacteria entering from the outside such as the atmosphere with the passage of time, and the sterilization effect is not sustained. Therefore, in order to use / drink as drinking water, it is necessary to sterilize immediately before, and the water sterilized over a long period of time cannot be used / drinked as drinking water.

  By the way, it is known to mix a bubble with water to obtain a tasteful drinking water. For example, carbonated water in which carbon dioxide gas is mixed with water is used for soft drinks and the like (see Patent Document 4). Moreover, if a gas is dissolved in water and drunk, a gaseous substance can be easily given to a living body.

  However, after dissolving a gas such as carbon dioxide at a high concentration under high-pressure conditions and then returning to atmospheric pressure, the foaming phenomenon occurs and the gas in the liquid is separated and released, so it can be stably released in the liquid for a long time. The upper limit of the amount of gas present is the saturated dissolution concentration, and it has not been possible to obtain drinking water that enhances palatability or enhances bioactivity by allowing gas to exist in a high concentration in the liquid.

JP-A-10-296248 Japanese Patent Laid-Open No. 11-010155 JP-A-11-262515 JP 2002-166148 A

  The present invention has been made in view of the above points. Beverage water and beverage water in which gas is stably retained in a liquid for a long period of time and functions such as bactericidal properties, palatability, and biological activity are maintained. It is an object of the present invention to provide a method of use, a method of purifying drinking water, and a drinking water generating device.

  In the first aspect of the present invention, the gas becomes nano-sized bubbles and exists in the saturated dissolved water of the gas, and the hydrogen bonding distance of water molecules present at the interface with the bubbles is such that the water is at normal temperature and normal pressure. It is water for drinking characterized by being shorter than the distance of the hydrogen bond at the time.

  The invention of claim 2 is the drinking water characterized in that the pressure of the gas forming the bubbles in the drinking water is 0.12 MPa or more.

  Invention of Claim 3 is water for drinking characterized by the gas being bactericidal gas in said water for drinking.

  Invention of Claim 4 is water for drinking characterized by gas being carbon dioxide in said water for drinking.

  The invention according to claim 5 is the drinking water characterized in that in the drinking water, the gas is hydrogen.

  Invention of Claim 6 is water for drinking characterized by gas being air or oxygen in said water for drinking.

  The invention according to claim 7 uses the gas in the drinking water by applying at least one external force selected from the group consisting of pressure change, temperature change, shock wave and ultrasonic wave to the drinking water to collapse the bubbles. It is the usage method of the water for drinking characterized by this.

  The invention according to claim 8 separates the gas in the drinking water by applying at least one external force selected from the group consisting of pressure change, temperature change, shock wave and ultrasonic wave to the drinking water to collapse the bubbles. This is a method for purifying drinking water.

  The invention of claim 9 includes a water inlet part 13 for taking in a liquid containing water from the outside, a gas supply part 2 for supplying gas to the liquid entered from the water inlet part, and a pressure part 1 for pressurizing the liquid supplied with the gas. A gas-liquid mixing unit 3 that generates a gas-liquid mixture by converting the gas in the liquid into nano-sized bubbles, a gas separation unit 4 that separates bubbles larger than the nano-size from the gas-liquid mixture, The pressure-reducing gas-liquid mixture is provided with a pressure-reducing unit 5 that depressurizes the air-liquid mixture to atmospheric pressure without collapsing nano-sized bubbles, and a discharge unit 7 that discharges the depressurized gas-liquid mixture. It is a drinking water production | generation apparatus.

  The invention of claim 10 is the drinking water generating apparatus characterized in that in the drinking water generating apparatus described above, a cooling unit for cooling the liquid taken in from the water inlet 13 is provided.

  An eleventh aspect of the present invention is the drinking water generating apparatus, wherein the drinking water generating apparatus includes a purification filter that purifies the liquid taken in from the water inlet 13.

  The invention of claim 12 is the drinking water generating apparatus characterized in that in the drinking water generating apparatus described above, a degassing part for degassing the liquid taken in from the water inlet 13 is provided.

  A thirteenth aspect of the present invention is the drinking water generating apparatus according to the above-described drinking water generating apparatus, wherein at least a part of the gas-liquid mixing unit 3 is constituted by the venturi tube.

  A fourteenth aspect of the present invention is the drinking water generating apparatus according to the above-described drinking water generating apparatus, wherein at least a part of the gas-liquid mixing unit 3 is constituted by the electrolysis means 15.

  According to the invention of claim 1, since the gas becomes nano-sized bubbles and exists in the saturated dissolved water of the gas, a large amount of gas can be stably held in the water for a long period of time. Functionality such as sex, palatability, and biological activity can be maintained for a long time, and drinking water that improves functionality can be obtained. In other words, the gas becomes nano-sized bubbles, so that they are stably present in the liquid without disappearing or coalescing. It can sustain sex. The retained gas can be generated from a liquid by applying an external force to be dissolved or separated, and the gas can be generated to use or purify drinking water.

  In addition, the water molecules that form a strong hydrogen bond around the bubble as the distance of the hydrogen bond at the bubble interface becomes smaller and surround the gas as nano-sized bubbles, and the water molecule that forms the hydrogen bond becomes a strong shell. Since the bubbles are wrapped, the bubbles will not collapse even if they collide with each other, and the pressure from the liquid can be countered by the stress from the inside of the bubbles, and the nano-sized bubbles can disappear or coalesce in the liquid. It can exist stably without doing. In other words, water molecules form O ... H hydrogen bonds, that is, strong bonds between oxygen atoms of one water molecule and hydrogen atoms of another water molecule, so that the hydrogen bond at the bubble interface becomes strong. Thus, the bubbles can be further stabilized. The bubbles that are wrapped in a strong hydrogen-bonded shell and stably held in the liquid have a high internal pressure, and when an external force is applied, the bubbles collapse to generate a gas that dissolves in the liquid or from the liquid. Or release. In this way, the gas retained in a large amount in the liquid by the strong hydrogen bond interface structure can be used and used as drinking water having functions such as bactericidal properties, palatability and bioactivity.

  According to the invention of claim 2, since the pressure of the gas forming the bubbles becomes high, the bubbles can be maintained at a high internal pressure, so that a stronger interface structure can be formed. The gas can be confined in the liquid as bubbles. In addition, due to the high internal pressure, stable bubbles are formed in a stationary state, and once an impact is applied to drinking water containing bubbles, the shell at the liquid interface collapses due to the force of the internal pressure. Since gas is generated and the gas is dissolved or separated, drinking water can be used by using the generated gas.

  According to invention of Claim 3, it can be set as the water for drinks with which sterilization continued. And even when sterilizing gas harmful to the human body is used, external force can be applied to separate the gas from the liquid to make it potable water. It is possible to easily obtain drinking water with improved properties.

  According to invention of Claim 4, it can be set as drinking water with high palatability. That is, in the case of normal carbonated water, carbon dioxide having a concentration equal to or higher than the saturated dissolution concentration is foamed and immediately separated from the liquid. However, according to the present invention, a large amount of carbon dioxide is stably present in the form of nano-sized bubbles, and when drunk, external force is applied in the mouth and the bubbles collapse to cause carbon dioxide to foam, Since external force is applied before drinking and foaming occurs in a gas amount exceeding the amount of ordinary carbonated water, palatability can be maintained over a long period of time, and palatability is achieved by foaming a large amount of gas. Can be increased.

  According to the invention of claim 5, since a large amount of hydrogen having a reducing power can activate a living body, drinking water having a high biological activity can be obtained. That is, when it is drunk, hydrogen having reducing power acts on the living body to reduce harmful oxidants in the body and render them harmless, so that the human body can be treated or made healthy.

  According to the invention of claim 6, since a large amount of oxygen contained in the bubbles can activate the living body, drinking water with high bioactivity can be obtained. That is, when drinking, a large amount of oxygen is supplied into the body and oxygen acts on the living body, so that the human body can be treated or made healthy.

  According to the seventh aspect of the present invention, it is possible to exert external force to generate gas from bubbles in the liquid to exert sterilizing performance, enhance palatability, enhance biological activity, and the timing to obtain Therefore, it is possible to enhance the functionality of drinking water.

  According to the eighth aspect of the present invention, gas that is dissolved in the liquid by applying an external force or gas that has become nano-sized bubbles can be separated from the liquid, and therefore, gas that is harmful to the human body is used. Even in this case, it is possible to obtain safe drinking water by removing the gas from the liquid.

  According to the invention of claim 9, by pressurizing the liquid into which the gas has been injected, bubbles having a strong interface structure are generated, and the nano-sized bubbles that exist stably even when the pressure is returned to atmospheric pressure. The gas-liquid mixture having bubbles with a strong interface structure can be generated and gradually reduced to atmospheric pressure to maintain the strong interface structure and eliminate or merge the bubbles. Therefore, it is possible to stably obtain drinking water in which nano-sized bubbles are mixed, and to efficiently and easily generate drinking water.

  According to the invention of claim 10, by mixing the gas and liquid in the cooled state, it becomes possible to allow more gas to be present in the liquid as nano-sized bubbles, and to improve the functionality of drinking water. It is something that can be done.

  According to the invention of claim 11, by purifying the liquid and mixing the gas and liquid, it becomes possible to allow more gas to exist in the liquid as nano-sized bubbles, thereby improving the functionality of drinking water. Is something that can be done.

  According to the invention of claim 12, when the liquid is degassed and the gas-liquid is mixed, more gas can be present in the liquid as nano-sized bubbles, and the functionality of drinking water is improved. It can be improved.

  According to the invention of claim 13, by using the venturi tube, it is possible to form nano-sized bubbles with a simple configuration, and the apparatus can be simplified.

  According to the invention of claim 14, by using the electrolysis means, nano-sized bubbles can be formed with a simple structure, and the apparatus can be simplified.

It is the schematic which shows an example of embodiment of the water production | generation apparatus for drinks. It is the schematic which shows a part of drinking water production | generation apparatus. (A) (b) is the schematic which shows a part of drinking water production | generation apparatus, respectively. (A)-(c) is the schematic which shows a part of drinking water production | generation apparatus, respectively. (A)-(d) is the schematic which shows a part of drinking water production | generation apparatus, respectively. It is the schematic which shows a part of drinking water production | generation apparatus. It is the schematic which shows another example of embodiment of the water production | generation apparatus for drinks. It is the schematic which shows another example of embodiment of the water production | generation apparatus for drinks. It is the schematic which shows another example of embodiment of the water production | generation apparatus for drinks. It is a conceptual explanatory drawing of the gas-liquid interface of the bubble in drinking water. (A) And (b) is a conceptual explanatory drawing which shows the model of a mode that an external force is given to drinking water and a bubble collapses. It is a graph which shows the difference of the infrared absorption spectrum of a gas-liquid liquid mixture and nitrogen saturated water. It is a graph which shows the gas volume contained in a gas-liquid liquid mixture. It is a photograph of the gas-liquid mixed solution by a scanning electron microscope (SEM). It is a graph which shows stability of a gas-liquid liquid mixture. It is a model figure which shows an example of a mode that a shock wave is added to drinking water, (a) is just before a collision, (b) is at the time of a collision, (c) is just after a collision.

  Hereinafter, modes for carrying out the invention will be described.

  The drinking water of the present invention is present in dissolved water in which the gas becomes nano-sized bubbles and this gas is dissolved at a saturated dissolution concentration. That is, the drinking water of the present invention is configured as a gas-liquid mixed liquid in which gas is nano-sized bubbles and mixed with the liquid.

  In general, it is known that a gas dissolves in water, but its saturated dissolution concentration is not high except for some gases such as carbon dioxide. A large amount of gas cannot be present in water, and the upper limit amount of gas present in the liquid is the saturated dissolution concentration. However, in the drinking water of the present invention, the gas is dissolved in water at a saturated dissolution concentration, and the gas exceeding the saturation dissolution concentration is stably present in the liquid as nano-sized bubbles, and the gas-liquid mixture It has become. That is, the gas is dissolved in water at a saturated dissolution concentration and is present as nano-sized bubbles. Therefore, there is a gas with a saturated dissolution concentration or more in the liquid, and a large amount of gas can be stably held in the liquid for a long period of time. Drinking water that improves bioactivity can be obtained. That is, the gas is stably present in the liquid without disappearing or coalescing by becoming nano-sized bubbles.

  Normally, bubbles present in the liquid collapse due to the pressure from the liquid and dissolve in the liquid. However, in the gas-liquid mixed liquid as described above, the gas is dissolved at a saturated dissolution concentration in the liquid. The gas cannot be dissolved any more, the bubbles are not collapsed, and the gas in the bubbles is not dissolved. Nano-sized bubbles that do not collapse have a high internal pressure that responds to the pressure from the liquid, and the internal pressure increases to maintain a balance with the liquid pressure, and the bubbles are stable while maintaining the nano-sized size. Present in the liquid. In addition, since nano-sized bubbles are extremely fine, they do not receive buoyancy, and bubbles do not rise and separate from the liquid. Therefore, nano-sized bubbles are present in the liquid stably over a long period of time. Then, an external force is applied to the nano-sized bubbles to generate a gas from the liquid, and the gas can be dissolved or separated in the liquid. The gas is generated to use or purify drinking water. It is something that can be done.

  The bubbles contained in the drinking water are nano-sized bubbles, specifically, bubbles of 1000 nm or less (so-called nano bubbles). When the bubbles are nano-sized and fine, a strong bubble interface structure can be formed, and a high-concentration gas can be held in the liquid. Further, since buoyancy does not act on the nano-order size bubbles, the bubbles do not rise and separate from the liquid, so that the bubbles can exist stably over a long period of time. If the bubble size is larger than the nano size, the bubble may not be stabilized. In addition, the bubble size can be measured by a scanning electron microscope (SEM), and the average particle diameter of the bubbles can be obtained by averaging the particle diameters of the bubbles obtained by the measurement. By the way, the liquid mixed with microbubbles is cloudy and can be discriminated visually. However, the liquid mixed with nanobubbles is colorless and transparent (or the color of the liquid when the liquid is colored) and can be discriminated visually. Can not. Therefore, the determination of the gas-liquid mixture is performed by SEM, density measurement, or the like. The lower limit of nano-sized bubbles is 1 nm.

  In drinking water, the distance between hydrogen bonds of water molecules present at the interface with the bubbles is shorter than the distance between hydrogen bonds at normal temperature and pressure. A hydrogen bond is a bond that stabilizes the system in a molecule that has a high electronegativity atom and a hydrogen atom, because the hydrogen atom approaches the high electronegativity atom of another molecule. . And in the water molecule which exists in the circumference | surroundings of the nanosized bubble which exists in drinking water, ie, the interface with a bubble, the distance of the hydrogen bond of a water molecule is normal temperature normal pressure (25 degreeC, 1 atmospheric pressure (0 .1013 MPa)), which is shorter than the hydrogen bond distance. As described above, when the drinking water is present under normal temperature and normal pressure conditions, the hydrogen bond distance at the bubble interface is shorter than the normal hydrogen bond distance at normal temperature and normal pressure. It is surrounded by water molecules that have formed hydrogen bonds. And the water molecule which formed this hydrogen bond turns into a strong shell, and encloses a bubble. As a result, even if the bubbles collide with each other, they will not collapse, and the pressure from the liquid can be countered by the stress from the inside of the bubbles, so the bubbles can be held without disappearing or coalescing in the liquid. Is something that can be done. In other words, it is different from conventional bubbles that are stable with surface tension. And since this hydrogen bond is stable over a long period of time, it becomes possible to use the drinking water in which bubbles are present stably over a long period of time. Further, nano-order size bubbles can be generated at a density far exceeding the conventional level and can be stably present in the liquid.

  Here, the water molecule is a hydrogen bond of O ... H, that is, a hydrogen bond is formed between an oxygen atom of one water molecule and a hydrogen atom of another water molecule. In the drinking water of the present invention, Since water is used as the liquid of the gas-liquid mixture, this hydrogen bond in the liquid is strengthened at the bubble interface and the bubbles are further stabilized. The water is not limited to high-purity water, and any water that can be used for beverages can be used, including waterworks, groundwater, rivers and ponds. In addition, the liquid used for the gas-liquid mixed liquid constituting the drinking water is not limited as long as it contains water, and the liquid may consist only of water, or water dissolves other components to form an aqueous solution. For example, it may be in a state such as ionic water.

  It is preferable to produce drinking water such that the hydrogen bond distance of water molecules at the interface with the bubbles is 99% or less when the hydrogen bond distance at room temperature and normal pressure is 100%. When the hydrogen bond distance falls within this range, the bubbles can be surrounded and stabilized by a hard shell of hydrogen bonds. If the distance between hydrogen bonds is longer than this, there is a possibility that bubbles cannot be stabilized and exist. Considering the interatomic distance, the lower limit of the hydrogen bond distance is 95%. The distance of hydrogen bonding at the bubble interface in the gas-liquid mixture can be calculated by analyzing the infrared absorption spectrum (IR) of the gas-liquid mixture, as will be described later.

  By the way, water having a hydrogen bond distance of the above-mentioned distance usually has a solid or hydrate crystal structure like ice. However, in the gas-liquid mixture as described above, it is locally present at the bubble interface. In the other liquids, normal hydrogen bonds are formed. That is, a hard shell of liquid molecules is formed by hydrogen bonds at a short distance at the bubble interface to prevent the bubbles from coalescing and disappearing, and at other than the bubble interface, liquid exists in a normal state and normal temperature At normal pressure, fluidity is ensured, and stable air bubbles are present to facilitate the use of drinking water.

  In drinking water, the pressure of the gas forming the bubbles, that is, the internal pressure of the bubbles is preferably 0.12 MPa or more, and is higher than the internal pressure of the bubbles given by Young Laplace's formula (following formula). A pressure is preferred.

Young Laplace's formula ΔP = 2σ / r
[ΔP: rising pressure inside the bubble, σ: surface tension, r: bubble radius]

When the internal pressure of the bubbles becomes such a pressure, the bubbles will be maintained at a high internal pressure, and a stronger interface structure can be formed, so that stable bubbles can be formed in a stationary state, The gas can be held in the liquid at a high concentration. On the other hand, once an impact is applied to the gas-liquid mixture, the interface structure of the bubbles collapses due to the force of the internal pressure, and the bubbles collapse, and a large amount of gas dissolves in the liquid or dissipates from the liquid. The drinking water can be used by utilizing the large amount of gas generated. The internal pressure of the bubbles in the gas-liquid mixture constituting the drinking water can be calculated by fitting the gas volume calculated from the total gas amount and density in the gas-liquid mixture to the gas equation of state, as will be described later. .

  The gas is not particularly limited, and various gases can be used. For example, sterilizing gases such as ozone, chlorine and chlorine dioxide, and reducing gases such as hydrogen, as well as gases such as carbon dioxide, air, oxygen, nitrogen, argon, helium, methane, propane, and butane. They can be used alone or in combination.

  One preferable gas is a sterilizing gas. As a result, the bactericidal gas becomes nano-sized bubbles and is retained in the liquid for a long period of time, so that the water for drinking having a high bactericidal property can be obtained. A sterilizing gas that is harmful to the human body may be used, in which case the gas is separated from the liquid by applying an external force such as pressure change, temperature change, shock wave or ultrasonic wave, and the liquid is harmless. Into potable water. As the bactericidal gas, ozone, chlorine and chlorine dioxide are preferable. If these gases are used, the sterilizing power is high, and a gas-liquid mixed solution can be easily produced to obtain drinking water. In this way, it is possible to easily obtain drinking water with improved bactericidal properties and safety without using chemicals.

  It is also preferable to use carbon dioxide as the gas. Thereby, it can be set as drinking water with high palatability. That is, in the case of normal carbonated water, carbon dioxide having a concentration equal to or higher than the saturated dissolution concentration is foamed and immediately separated from the liquid. However, according to the gas-liquid mixture described above, a large amount of carbon dioxide can be stably present as nano-sized bubbles. And, when drinking, an external force is applied in the mouth or the like, the bubbles collapse and the carbon dioxide foams, so that the palatability can be maintained for a long period of time. Moreover, external force can be given before drinking and it can be made to foam with the gas amount exceeding the gas amount of normal carbonated water, and palatability can be improved by making it the drinking water which foamed a lot of gas. .

  It is also preferable to use hydrogen as the gas. In that case, since a large amount of hydrogen having a reducing power can activate the living body, drinking water having high biological activity can be obtained. That is, when it is drunk, hydrogen having reducing power acts on the living body to reduce harmful oxidants in the body and render them harmless, so that the human body can be treated or made healthy.

  It is also preferable to use oxygen or air as the gas. In that case, since a large amount of oxygen contained in the bubbles can activate the living body, drinking water with high biological activity can be obtained. That is, when drinking, a large amount of oxygen is supplied into the body and oxygen acts on the living body, so that the human body can be treated or made healthy.

Potable water as described above, when using pure water as the liquid, it zeta potential negative, the area of the bubble interfaces present in a volume 1 cm ³ becomes ² about 1.2 m. The zeta potential can be measured by electrophoresis.

  Drinking water may be drunk as it is as drinking water, or may be drunk in a state of soft drinking water (carbonated water) by applying an external force to generate gas and foam it. Alternatively, an external force may be applied to generate gas, which may be removed from the liquid and used as water free from gas. Moreover, by mixing drinking water with other components, it can be made into ionic water, can be made into soft drinks, or can be made into beverages such as tea and coffee.

  The method for using drinking water of the present invention uses the gas in drinking water by applying external force such as pressure change, temperature change, shock wave, and ultrasonic wave to the drinking water as described above to collapse bubbles in the liquid. Is. As described above, a large amount of gas is present in the liquid as bubbles in the drinking water, and the bubbles are collapsed or united by external force. Therefore, when an external force such as pressure change, temperature change, shock wave or ultrasonic wave is applied to the drinking water, the bubbles collapse and gas is generated and dissolved in the liquid or released from the liquid. This generated gas is used. For example, when a sterilizing gas is used, the sterilizing power can be increased by collapsing bubbles to dissolve the gas. In addition, when the sterilizing gas is harmful, the gas can be completely discharged to make the liquid harmless and make it potable water. Moreover, if external force is given just before drinking using gas, such as a carbon dioxide, a lot of gas far exceeding normal carbonated water can be made to foam, and palatability can be improved. In addition, if gas such as hydrogen, oxygen, or air is used for foaming by applying external force immediately before drinking, these gases are released from the liquid in the body after drinking and come into contact with living body organs, resulting in biological activity. Can be increased. In this way, the functionality of drinking water can be enhanced and used at the timing desired to be obtained by applying an external force.

  The method for purifying drinking water according to the present invention separates gas in drinking water by applying external force such as pressure change, temperature change, shock wave and ultrasonic wave to the drinking water as described above to collapse bubbles in the liquid. Is. When a sterilizing gas is used as the gas, the bactericidal gas is usually harmful to the human body, and it is dangerous to drink drinking water as it is. However, when an external force such as pressure change, temperature change, shock wave, or ultrasonic wave is applied to the drinking water, the bubbles collapse to generate gas that is released from the liquid and separated. The phenomenon of generating and separating this gas is used. That is, when an external force is applied to the drinking water, the bactericidal gas harmful to the human body is released from the liquid due to the collapse of the bubbles and renders the liquid harmless, so that the drinking water can be purified to drinkable water. Is. The bactericidal gas is not particularly limited, but is preferably one that is easily released from the liquid by applying an external force, and from that viewpoint, it is more difficult to dissolve in water. preferable. As described above, in the present invention, it is possible to stably exist by making a gas having low solubility or insolubility into nano-sized bubbles, and to obtain a safe drinking water having a high bactericidal property. It is something that can be done.

  In the method for using drinking water and the method for purifying drinking water, the external force for collapsing the bubbles should be at least one selected from the group consisting of pressure change, temperature change, shock wave and ultrasonic wave. Is preferred. Thereby, the gas can be efficiently generated to use the gas, or the gas can be separated from the liquid and purified.

  When an external force is applied by a pressure change, impact can be applied by making the pressure applied to the drinking water higher or lower than the normal pressure by putting drinking water in the pressurizing device or the decompressing device. That is, the gas-liquid mixture whose pressure has been changed may collapse the interface structure due to the increase in internal energy and the bubbles collapse, or the bubbles collide violently and coalesce into a large micro-sized bubble. Gas is generated. This gas dissolves in the liquid, and the gas is released from the liquid. As the pressure change, the liquid pressure is set to a pressure of +0.01 MPa or more, or a pressure of -0.01 MPa or less, that is, the absolute value of the pressure difference between the liquid pressure and the bubble internal pressure is set to 0.01 MPa or more. For example, it is possible to apply an external force by alternately changing these pressures.

  When external force is applied by temperature change, heating means such as a heater can be used to turn on the heating means and raise the temperature of the drinking water stored at room temperature and normal pressure to collapse the bubbles. In other words, the gas-liquid mixture whose temperature has been increased may cause the interface structure to collapse due to an increase in internal energy, causing bubbles to collapse, or the bubbles to violently collide and form bubbles that are larger than a micro size. Gas is generated. And this gas melt | dissolves in a liquid, and gas discharge | releases from a liquid. The temperature to be heated can be appropriately set according to the rate of gas generation. For example, when bubbles are rapidly collapsed to generate gas, the drinking water is set to about 10 to 30 ° C. or higher. It can be made to warm so that it may rise, and when it is made to collapse gas and generate gas gradually, it should be made to heat so that drinking water rises to about 1-10 ° C or more. it can.

  In addition, an external force can be applied by a shock wave. As shock waves, vibrations, radio waves, microwaves, and the like can be used. For example, when microwaves are used as shock waves, a microwave generator can be used to apply microwave vibrations to drinking water from a microwave oscillator. . At this time, the internal energy of the gas-liquid mixture to which vibration waves are applied increases, the interface structure collapses and the bubbles collapse, or the bubbles collide violently and the bubbles merge to form a large micro-sized bubble or larger. Or gas is generated. And this gas melt | dissolves in a liquid, and gas discharge | releases from a liquid. The frequency of the microwave is preferably any of a frequency of 915 kHz, 2.4 to 2.5 GHz, and 5.7 to 5.9 GHz. If the frequency range is out of this range, the effect of collapsing bubbles may be reduced. In the present invention, the shock wave is a concept including a vibration wave generated by an impact when the gas-liquid mixed liquid collides.

  In addition, when an external force is applied by ultrasonic waves, an ultrasonic vibration device can be used to apply ultrasonic vibrations to the drinking water from the ultrasonic vibrator. At this time, the internal energy of the vibrated gas-liquid mixture increases, the interface structure collapses and the bubbles collapse, or the bubbles collide violently and the bubbles merge to form a large micro-sized bubble or larger. Gas is generated. And this gas melt | dissolves in a liquid, and gas discharge | releases from a liquid. The frequency of the ultrasonic wave is preferably 16 kHz to 2.4 GHz. Even if the frequency range is larger or smaller than this, the effect of collapsing bubbles may be reduced.

  In this way, by destroying bubbles in the drinking water using external force such as pressure change, temperature change, shock wave, and ultrasonic wave, a large amount of gas present as bubbles is instantly converted into a large amount of liquid by these means. It can be dissolved or released from a liquid, and can easily generate gas efficiently and utilize or purify drinking water.

  Next, the drinking water production | generation apparatus which produces | generates the above drinking water is demonstrated.

  FIG. 1 is a schematic diagram illustrating an example of an embodiment of a drinking water generating apparatus. As a drinking water production | generation apparatus, the gas-liquid liquid mixture production | generation apparatus which produces | generates the gas-liquid liquid mixture which gas exists in the liquid as a nanosize bubble is used.

  The gas-liquid mixed-liquid production | generation apparatus of FIG. 1 pumps a liquid, and manufactures a gas-liquid mixed liquid continuously, from the water-incoming part 13 which takes in water from water supply sources, such as water supply piping, Gas supply unit 2 that supplies gas to the liquid that has entered, pressurization unit 1 that pressurizes the liquid to which the gas is supplied, and gas-liquid mixing that generates a gas-liquid mixture by making the gas in the liquid into nano-sized bubbles Part 3, gas separation part 4 for separating bubbles larger than nanosize from the gas-liquid mixture, and decompression of the pressurized gas-liquid mixture to atmospheric pressure without collapsing nanosize bubbles A part 5 and a discharge part 7 that discharges the decompressed gas-liquid mixture are provided, and each part is provided connected to the flow path 6.

  The flow path 6 connects each part of a drinking water production | generation apparatus, each part, and the exterior, and flows a liquid from upstream to downstream, for example, is comprised with pipe bodies, such as a pipe. The pressurizing unit 1, the gas-liquid mixing unit 3, the gas separating unit 4, and the decompressing unit 5 are arranged in the order from the bottom to the top in a tapered cylindrical housing 12 whose diameter decreases toward the top. Is contained. The flow path 6 includes a flow path 6 a on the upstream side of the housing 12, a flow path 6 b in the housing 12, and a flow path 6 c on the downstream side of the housing 12. The flow path 6b is formed so that the liquid flows upward as the entire housing 12.

  The water intake section 13 is for introducing water into the apparatus from a water supply source outside the gas-liquid mixed liquid generating apparatus. In the form of FIG. 1, the pipe body of the flow path 6a connected to the water supply source is used. It is configured as an entrance. The water inlet 13 may be provided with an adjustment valve that can be opened and closed to adjust the amount of water and the water pressure.

  The gas supply unit 2 is connected to the flow path 6 (flow path 6a or 6b) to supply and inject a gas to the liquid. For example, when injecting air as a gas, one end is in the atmosphere. The gas supply part 2 can be formed by connecting the other end of the tube opened to the flow path 6. Or when supplying ozone, chlorine, chlorine dioxide, hydrogen, carbon dioxide, oxygen, nitrogen, argon, etc. as gas, the gas supply part 2 is connected to the flow path 6 by connecting a cylinder filled with these gases. Can be formed. Moreover, when supplying ozone, you may make it connect the gas supply part 2 to an ozone generator, and supply the ozone produced | generated from air. The connection position of the gas supply unit 2 to the flow path 6 may be a position upstream of the gas-liquid mixing unit 3. When the pressurizing unit 1 and the gas-liquid mixing unit 3 are formed as a single unit and configured by the pump 11 as in this device, the pressurizing unit 1 is connected to the flow path 6 on the upstream side. When the pressurizing unit 1 and the gas-liquid mixing unit 3 are configured separately, the pressurizing unit 1 and the gas-liquid mixing unit 3 may be connected to the flow path 6 upstream from the pressurizing unit 1 or downstream from the pressurizing unit 1. Either of them may be connected to the flow path 6 on the side.

  The pressurizing unit 1 pumps a liquid, and can be constituted by, for example, a pump 11 that pressurizes water sent from a water supply source and feeds it downstream as in this apparatus.

  The gas-liquid mixing unit 3 mixes the liquid fed under pressure and the gas injected into the liquid, and converts the gas into fine bubbles by pressurization and disperses and mixes them in the liquid. The gas-liquid mixing unit 3 can be configured by applying a stirring force by changing the cross-sectional area of the flow path, or if the liquid is flowing in the flow path 6 with the liquid being stirred, 6 can also be configured. In the form of FIG. 1, the pressurizing unit 1 and the gas-liquid mixing unit 3 are combined to be configured by a pump 11. When pressurization and mixing of gas and liquid are performed by the pump 11, the liquid can be rapidly pressurized and mixed, so that a gas-liquid mixture having a strong bubble interface structure can be reliably generated. In the gas-liquid mixing unit 3, the liquid and the gas are mixed under high pressure conditions. Thereby, a strong interface structure is formed around the bubble, and the bubble can be covered with the shell of the strong interface structure, and the gas can be stabilized as a fine bubble.

The pump 11 that constitutes the pressurizing unit 1 and the gas-liquid mixing unit 3 as described above abruptly applies a strong pressure to the liquid into which the gas has been injected, and the bubbles present in the liquid have a fine nano size. Are subdivided into bubbles and dispersed in a liquid. In addition, a strong interface structure is formed by liquid molecules at the interface of the bubbles that have become high pressure due to a sudden pressure change. At that time, when the pressurization rate ΔP ₁ / t (ΔP ₁ : pressure increase, t: time) is 0.17 MPa / sec or more, the bubbles are subdivided to generate fine nano-sized bubbles. The pressure of the gas-liquid mixture when it is sent from the gas-liquid mixing unit 3 to the gas separation unit 4 is 0.15 MPa or more, thereby generating nano-sized bubbles with a strong structure at the bubble interface Is something that can be done. In consideration of substantial pressurization conditions, the upper limit of the pressurization rate ΔP ₁ / t is 167 MPa / sec, and the upper limit of the pressure of the pressurized gas-liquid mixture is 50 MPa.

  FIG. 2 is a schematic view of a main part showing an example of a specific form of the pump 11. The pump 11 a pressurizes the liquid by the rotation of the rotating body 21, and the rotating blades 22 attached to the rotating body 21 continuously rotate to pump the pump outlet 27 through the pump passage chamber 23 from the pump inlet 26. The liquid is sent out in the direction of flow to and pressurized. In FIG. 2, the white arrow indicates the flow direction of the liquid, and the solid line arrow indicates the rotation direction of the rotating body 21. The pump 11a includes four rotary blades 22. Further, the rotating shaft 25 of the rotating body 21 is arranged so as to be deviated toward the pump outlet 27 side from the cylindrical center of the pump wall 24 formed in a cylindrical shape, and is provided as an eccentric shaft. The volume of the second flow path chamber 23b of the pump flow path chamber 23 is formed smaller than the volume of the first flow path chamber 23a due to the eccentricity of the rotary shaft 25, and the pump flow path chamber is arranged along the liquid flow direction. The volume of 23 is gradually reduced.

Then, the liquid fed to the pump flow passage chamber 23 is pressurized is fed by rotating blades 22, large bubbles B _B due to rapid pressure changes bubbles B _N of subdivided by fine nano-sized generated . That is, the liquid sent from the first flow path chamber 23a to the second flow path chamber 23b along with the rotation of the rotating body 21 is rapidly compressed and pressurized as the volume of the pump flow path chamber 23 becomes smaller. Nano-sized bubbles _BN are generated by the pressure. Further, in the illustrated pump 11a, a shearing force is applied when the liquid passes between the inner surface of the pump wall 24 and the tip of the rotor blade 22, and the liquid is pressurized while being sheared by the clearance. At this time, the gas (large bubbles B _B ) mixed in the liquid is sheared by the shearing force applied to the liquid and becomes finer nano-sized bubbles (B _N ). The distance narrowest part between the inner surface of the pump wall 24 and the tip portion of the rotor blades 22, i.e. the clearance distance L _C is preferably 5Myuemu～2mm. Thus, according to the pump 11a using the rotator 21, it is possible to form nano-sized bubbles by shearing the gas injected into the liquid while being rapidly pressurized with the rotator 21 with a strong force. A gas-liquid mixture having a strong bubble interface structure can be generated more reliably.

  The rotational speed of the rotating body 21 of the pump 11 is preferably 100 rpm or more. At this time, it becomes 1/2 rotation or more in 0.3 seconds. By having such a rotational speed, it is possible to reliably generate nano-sized bubbles in which the hydrogen bond distance is shortened by injecting a gas having a saturation dissolution concentration or more into the liquid.

  The pressurization by the pressurizing unit 1 and the gas-liquid mixing unit 3 can be performed multiple times by providing a plurality of pressurizing units 1 or gas-liquid mixing units 3. By pressurizing the liquid a plurality of times while feeding the liquid, the liquid can be strongly pressed to generate a gas-liquid mixture having a strong bubble interface structure. Specifically, the pressurizing unit 1 can be configured with a pump 11 as shown in FIG. 1, and the gas-liquid mixing unit 3 can be configured with one or more pumps 11 or venturi tubes 14. .

  Here, as shown in FIG. 3A, a venturi tube 14 for injecting gas into the liquid by applying a negative pressure may be provided at a connection position between the gas supply unit 2 and the flow path 6a. In this case, the gas-liquid can be mixed by causing the venturi tube 14 to function as the gas-liquid mixing unit 3 (or a part of the gas-liquid mixing unit 3). By using the venturi tube 14 in this way, nano-sized bubbles can be formed with a simple configuration, and the apparatus can be simplified. The illustrated venturi pipe 14 has an inflow side pipe portion 14a that gradually decreases in cross-sectional area from the inflow side to the outflow side, a throttle pipe portion 14b that has the smallest cross-sectional area in the venturi pipe 14, and an outflow side from the inflow side. It is comprised from the outflow side pipe part 14c from which a cross-sectional area becomes large gradually toward the side. One end of the gas supply unit 2 is connected to the throttle tube unit 14b, and the gas supplied from the gas supply unit 2 is injected into the liquid in the throttle tube unit 14b.

  Further, as shown in FIG. 3 (b), the gas supply unit 2 and the gas-liquid mixing unit 3 (or a part of the gas-liquid mixing unit 3) are combined to form the electrolysis means 15, which is generated by electrolysis. The gas to be supplied may be mixed with water by supplying it to water. In this case, the gas injected into the liquid becomes hydrogen and oxygen generated by electrolysis of water. Then, the liquid generated and supplied by the electrolysis means 15 is sent to the pump 11 to surely become nano-sized bubbles. By using the electrolysis means 15 in this way, nano-sized bubbles can be formed with a simple configuration, and the apparatus can be simplified. In the illustrated electrolysis means 15, the liquid sent from the flow path 6 a is stored in the electrolysis tank of the electrolysis means 15, and water is electrolyzed by applying a voltage between the anode (+) and the cathode (−). It has become. Water supplied with gas by electrolysis is sent to the pump 11 through the flow path 6a.

  The gas separation unit 4 removes bubbles larger than nano-size, that is, bubbles larger than 1 μm in diameter (bubbles larger than micro-size) from the liquid mixed with gas as described above. In the liquid in which nano-sized bubbles are formed as described above, a gas of micro size or larger is also mixed and present. However, micro-sized bubbles or larger cannot stably exist in the liquid, and if they are present in the liquid, the nano-sized bubbles are merged or collapsed, and the nano-sized bubbles are not allowed. It will be stable. Therefore, the micro-sized or larger bubbles are removed from the gas-liquid mixture so that the bubbles are only nano-sized to stabilize the nano-sized bubbles.

  The gas separation unit 4 can be configured by a tubular body or the like in which bubbles are lifted and removed by their own buoyancy. Since the removed bubbles become gas and accumulate on the upper part, the removed gas can be removed by the gas removing unit 8. Bubbles of a size exceeding 1 μm in diameter (micro-sized bubbles) are raised by buoyancy, so that relatively large bubbles are removed and nano-sized bubbles that are fine bubbles are present in the liquid. It is possible to obtain a stable gas-liquid mixture having a strong interface structure.

  Specifically, the gas separation unit 4 can be configured as shown in FIG. (A) is formed so as to be substantially horizontal (on a plane substantially perpendicular to the direction of gravity) on the ground surface, and the bubbles B in the liquid Lq are raised to the liquid surface by the buoyancy to remove the bubbles B. An example of the tube is shown. Further, (b) is formed so that the shape is an inverted L shape when viewed from the front, and the flow direction of the liquid Lq is changed from the horizontal direction to the downward direction (substantially the same direction as the gravitational direction), thereby causing bubbles in the liquid Lq. An example of a tubular body in which B is raised to the liquid level by its buoyancy to remove bubbles B is shown. Further, (c) shows a tubular body in which the flow direction of the liquid Lq is set downward (substantially the same direction as the direction of gravity), and the bubbles B in the liquid Lq are raised to the liquid surface by buoyancy to remove the bubbles B. An example is shown. The bubbles separated by the gas separation unit 4 become gas and are discharged to the outside from the gas removal unit 8 formed of a tubular body or the like.

The decompression unit 5 gradually reduces the pressure of the liquid mixed with gas to atmospheric pressure without generating large bubbles. When the liquid mixed with gas by pressurization as described above is in a high-pressure state and is discharged to the outside under atmospheric pressure as it is, bubbles in the gas-liquid mixture are combined due to a sudden pressure drop. May become a gas and be discharged from the liquid, and cavitation may occur. Therefore, the decompression unit 5 is provided, and when the gas-liquid mixture in a pressurized state is sent out, the decompression unit 5 gradually reduces the pressure to atmospheric pressure and then discharges it. The decompression unit 5 is configured to decompress while reducing the upper limit of the decompression speed ΔP ₂ / t (ΔP ₂ : decompression amount, t: time) over the entire piping while sending a liquid in which gas is mixed. ing. Thus, the gas-liquid mixture can be taken out without erasing or coalescing the nano-sized bubbles while maintaining the structure of the strong bubble interface.

The decompression section 5 can be configured as shown in FIG. 5, and specifically, the flow path 6 in which the cross-sectional area of the flow path gradually decreases as shown in FIG. In this way, the flow path 6 in which the cross-sectional area of the flow path gradually decreases gradually, or the gas-liquid mixing in the high pressure state (P ₁ ) due to the pressure loss in which the pressurized liquid flows in the flow path 6 as in (c) The flow path 6 whose flow path length (L) is adjusted so as to reduce the pressure of the liquid gradually (P ₂ , P ₃ ,...) To the atmospheric pressure (P _n ), and (d) Thus, it can be constituted by a plurality of pressure regulating valves 9 provided in the flow path 6.

For example, when the decompression part 5 as shown in FIG. 5A or 5B is used, the flow path 6 upstream of the decompression part 5 has an inner diameter of 20 mm, and the decompression part 5 has a flow path length of about 1 cm to At 10 m, the inner diameter can be gradually reduced from 20 mm to 4 mm so that the cross-sectional area of the flow path can be reduced. In addition, the decompression part 5 can be set to inlet inner diameter / outlet inner diameter = about 2-10, or the inner diameter reduction | decrease value per cm can be set to about 1-20 mm. At this time, if the gas-liquid mixed solution is sent to the decompression unit 5 at a flow rate of 4 × 10 ⁻⁶ m / s or more, the decompression rate is 2000 MPa / sec or less and the pressure can be reduced by 1.0 MPa without erasing the nano-sized bubbles. The gas-liquid mixture can be depressurized to atmospheric pressure.

  The decompressed gas / liquid mixture is discharged from the discharge portion 7 to the outside. At this time, as shown in FIG. 6, an extension channel 10 can be provided between the channel 6 b and the channel 6 c in order to ensure a sufficient pressure of the liquid in the pressurizing unit 1. That is, the total pressure loss including the decompression unit 5 is calculated, the pressure required to pressurize the liquid and gas in the gas-liquid mixing unit 3 by the indentation pressure from the pressurization unit 1, and the total pressure loss The extended flow path 10 may be added to the flow path 6 with the flow path length adjusted so that the pressure loss of this difference occurs. In order to secure the indentation pressure, it may be possible to provide a throttling portion or the like. However, if the indentation pressure is adjusted by the throttling portion or the like, bubbles may collapse due to a sudden pressure change. However, if the extension channel 10 is provided in this way, the gas-liquid mixture can be discharged while the bubbles are stabilized.

In the gas-liquid mixed-liquid generator configured as described above, gas is supplied to the liquid that has entered from the water inlet 13 by the gas supplier 2 and injected. Then, the liquid into which the gas has been injected is subjected to a pressurization speed ΔP ₁ / t (ΔP ₁ : pressure increase, t : Time) to make the liquid pressure 0.15 MPa or more. That is, the pressure of the liquid at the time of sending out from the gas-liquid mixing part 3 to the gas separation part 4 is 0.15 MPa or more. Thereafter, after the bubbles exceeding the nano size in the gas-liquid mixture are removed by the gas separation unit 4, the pressure reduction rate ΔP with a maximum pressure reduction rate of 2000 MPa / sec or less while sending the liquid to the pressure reduction unit 5 and the downstream flow path 6. _The pressure is gradually reduced to atmospheric pressure at ₂ / t (ΔP ₂ : reduced pressure amount, t: time). Thereby, a gas-liquid mixed liquid in which nano-sized bubbles are stably present can be continuously generated, and this gas-liquid mixed liquid can be used as drinking water.

  The flow path 6 on the downstream side of the gas-liquid mixing unit 3 can be formed in a tube having an inner diameter of about 2 to 50 mm. As a result, the gas-liquid mixture can be discharged with a relatively thick channel cross-sectional area, and the clogging of the pipe as in the case where the channel 6 is configured by a narrow path can be prevented, and the gas-liquid mixture can be used. This makes it easy to obtain drinking water.

  And the drinking water discharged from the discharge part 7 can be drunk as it is by putting it in a container, etc., or can be drunk after being stored, and can generate or separate gas by applying an external force. And can be drunk. Moreover, you may produce soft drinks, tea, and coffee using this drinking water.

  FIG. 7 is a schematic view showing another example of the embodiment of the drinking water generating apparatus. In addition to the configuration of the apparatus of FIG. 1, this apparatus includes a container 16 that receives drinking water discharged from the discharge section 7. The external force applied to the liquid in the container 16 is adjusted below the container 16. An external force control unit 17 is provided. The housing 12 and the container 16 are placed on a disk-shaped substrate 18.

  The container 16 stores drinking water discharged from the discharge unit 7. In the illustrated form, a beaker-shaped container 16 having an upper opening is shown as the container 16, but the container 16 may be a storage tank or a drinking cup. The external force control unit 17 includes a temperature control unit that controls temperature, a pressure control unit that controls pressure change, a shock wave control unit that emits shock waves, or an ultrasonic control unit that emits ultrasonic waves, and uses drinking water. Just before the switch is turned on, an external force is applied to the liquid stored in the container 16 to collapse the nano-sized bubbles contained in the drinking water, so that the gas is dissolved in the liquid or the gas is separated from the liquid. It is something to do.

  For example, when a temperature control unit such as a heater is used as the external force control unit 17, the drinking water stored in the container 16 at normal temperature is heated by turning on the temperature control unit, and the temperature of the drinking water is set to 10 to 10. The nano-sized bubbles in the drinking water are collapsed by increasing the temperature to 30 ° C. or higher to dissolve the gas in the liquid, foam the gas, or separate the gas. If the gas is dissolved in the liquid, it can exert sterilizing properties, and if the gas is foamed, it can be made highly-preferred drinking water, and if the gas is separated, Returning to normal water, the water can be used for beverages and the like.

  As described above, the gas-liquid mixed solution is generated in a desired amount or a volume of the container 16 and stored in the container 16. After an external force is applied when necessary, the gas-liquid mixed liquid is taken out from the container 16 and drunk. The apparatus shown in the figure can be used as a potable water generator. The conditions for the external force such as pressure control, temperature control, shock wave, and ultrasonic wave can be the same conditions as the use and purification of potable water described above.

  In this device, the necessary amount of drinking water is generated, and after applying nano-sized bubbles by applying an external force just before use, the nano-sized bubbles need only be taken out for drinking. Can be produced, and functions such as bactericidal properties, palatability, and biological activity can be efficiently exhibited.

  In the illustrated embodiment, the external force control unit 17 is provided on the outer side (lower side) of the container 16 so as to apply external force to the drinking water inside the container 16 without contact from the outer side of the container 16. The controller 17 may be provided inside the container 16 so as to contact the drinking water.

  Moreover, the external force applied by the external force control unit 17 may be continuous or intermittent. When external force is applied continuously, a large amount of gas in the drinking water can be generated at once, and the functionality can be improved instantaneously. On the other hand, when external force is applied intermittently, gas can be gradually generated to maintain functionality.

  FIG. 8 is a schematic diagram illustrating another example of the embodiment of the drinking water generating apparatus. In addition to the configuration of the apparatus of FIG. 1, this apparatus includes a container 16 that receives drinking water discharged from the discharge unit 7, and further, gas-liquid mixing is performed in the flow path 6 between the discharge unit 7 and the decompression unit 5. An external force control unit 17 that applies an external force to the liquid is provided. The housing 12 and the container 16 are attached on a disk-shaped substrate 18.

  The external force control unit 17 includes a temperature control unit for controlling temperature, a pressure control unit for controlling pressure change, a shock wave control unit for irradiating shock waves, an ultrasonic control unit for irradiating ultrasonic waves, and the like. Applying an external force to the drinking water that is generated to collapse the nano-sized bubbles contained in the drinking water and dissolve the gas in the liquid, or separate the gas from the liquid and purify it To do.

  For example, when a temperature control unit such as a heater is used as the external force control unit 17, the drinking water generated at room temperature is heated by turning on the temperature control unit, and the temperature of the drinking water is set to 10 to 30 ° C. or higher. For example, the nano-sized bubbles in the drinking water are collapsed to dissolve the gas in the liquid, to foam the gas, or to separate the gas. If the gas is dissolved in the liquid, it can exert sterilizing properties, and if the gas is foamed, it can be made highly-preferred drinking water, and if the gas is separated, Returning to normal water, the water can be used for beverages and the like.

  Then, the drinking water in which the nano-sized bubbles are collapsed by the external force is discharged from the discharge 7 and stored in the container 16. The drinking water stored in the container 16 has enhanced functionality due to the collapse of nano-sized bubbles, and can be used for drinking as it is. The conditions for the external force such as pressure control, temperature control, shock wave, and ultrasonic wave can be the same conditions as the purification of drinking water described above.

  In this device, after producing drinking water that is a gas-liquid mixture, the nano-sized bubbles can be immediately collapsed and used for drinking, etc., such as efficient bactericidal, palatability, bioactivity, etc. It is possible to exhibit the functionality of.

  FIG. 9 is a schematic view showing another example of the embodiment of the drinking water generating apparatus. In addition to the configuration of the apparatus of FIG. 1, this apparatus is provided with a pretreatment section 19 that performs liquid pretreatment in the flow path 6 between the water inlet section 13 and the gas supply section 2.

  The pre-processing unit 19 includes a cooling unit that cools the temperature of the liquid, a purification filter that removes impurities in the liquid such as foreign matter, or a deaeration unit that removes gas contained in the liquid. In order to make it easy to mix the liquid and the liquid, the water sent from the water inlet 13 is pretreated. By performing the pre-processing in the pre-processing unit 19, it is possible to increase the mixing property of the gas and the liquid and generate more nano-sized bubbles, and the gas-liquid mixing in which the gas is mixed at a high concentration A liquid can be produced to further improve the functionality of drinking water.

  For example, when a cooling unit is used as the pretreatment unit 19, the liquid sent from the water intake unit 15 is cooled by the cooling unit, and a gas-liquid mixture is generated while being cooled. The cooling unit can be formed, for example, by winding a cooling heat exchanger around the flow path 6 and attaching it. When liquid and gas are mixed using cooled water, nano-sized bubbles are formed, and the nano-sized bubbles are stabilized because the liquid is cooled, and the gas separation unit 4 is not collapsed without collapsing. And it will be sent to the pressure reduction part 5, and the gas amount which forms a nanosize bubble can be raised and a high concentration gas-liquid liquid mixture can be produced | generated. And drinking water is produced | generated in the state where temperature is lower than normal temperature. The cooled drinking water is discharged from the discharge unit 7 and used for drinking. The cooling temperature only needs to be such that the temperature of the liquid is equal to or lower than normal temperature, and can be, for example, 0 to 25 ° C. The discharged drinking water may be used for drinking as it is, or may be cooled and stored so as to maintain a cooled state. When stored with cooling, the bubbles can be stably held for a long time. And the temperature of the gas-liquid mixture rises due to the outside air temperature and the temperature of the mouth when drinking, the bubbles in the liquid collapse, the gas dissolves or foams, functions such as palatability and biological activity It can improve the nature.

  Further, when a purification filter is used as the pretreatment unit 19, the liquid sent from the water inlet 13 is purified by removing foreign substances such as dust with the purification filter, and a gas-liquid mixture is generated with the purified water. The The purification filter is formed by, for example, attaching a mesh-like (mesh) filter inside the flow path 6 or providing a filter tube filled with resin or the like in the flow path 6 to allow liquid to pass through. Can do. Specifically, a hollow fiber membrane filter, a nonwoven fabric filter, a thread wound filter, or the like can be used. And, by producing a gas-liquid mixture with this purified water, a clean liquid free from impurities such as foreign substances is mixed with the gas, so that the miscibility of the gas and the liquid is increased, and more nanosize Bubbles can be formed, and a gas-liquid mixture in which gas is mixed at a high concentration can be generated. And since high concentration gas turns into a nano-sized bubble and exists stably in drinking water, functionality, such as bactericidal property, palatability, and bioactivity, can be improved.

  Moreover, when the deaeration part is used as the pre-processing part 19, the liquid sent from the water intake part 13 is made into the state without a gas by removing the gas in a liquid in a deaeration part, and gas is not contained. A gas-liquid mixture is produced with the water in the state. The deaeration unit can be formed by, for example, an ultrasonic device that irradiates ultrasonic waves toward the inside of the flow path 6 or a decompression device that suddenly decompresses the liquid to release the internal gas. Moreover, you may deaerate using deaeration filters, such as a hollow fiber deaeration membrane. And, by producing a gas-liquid mixture with water from which the gas has been removed, the liquid that is gas-deficient and does not contain gas is mixed with the gas. As a result, a larger number of nano-sized bubbles can be formed, and a gas-liquid mixed liquid in which a gas is mixed at a high concentration can be generated. And since high concentration gas turns into a nano-sized bubble and exists stably in drinking water, functionality, such as bactericidal property, palatability, and bioactivity, can be improved.

  And the pre-processing part 19 can be comprised combining said cooling part, a purification | cleaning filter, and a deaeration part. In this case, the gas-liquid mixing property is further increased as compared with the case where the pretreatment unit 19 is configured by a single processing method, and it becomes possible to mix a high-concentration gas into the liquid. Specifically, for example, if a degassing purification filter such as a hollow fiber membrane filter is used, the purification filter and the degassing part can be used together.

  FIG. 10 is a conceptual explanatory diagram for explaining the mechanism by which the gas-liquid mixture produced as drinking water is stabilized. As shown in the figure, a protective film M having a boundary film structure (crystal structure) is formed at the interface between the bubble B and the liquid Lq by bonding of strong water molecules such as ice or hydrate having a hydrogen bond distance shorter than usual. Therefore, it is considered that the mass transfer between the gas and liquid was prevented, and the bubbles became stable. And the internal pressure of the bubble (nano bubble) in a gas-liquid mixed liquid is more than the pressure calculated | required from the formula of Young Laplace. As described above, the hydrogen bonding distance at the bubble interface is short and the internal pressure of the bubble is increased, so that the bubble becomes a stable gas-liquid mixture. And since the internal pressure of a bubble is high, it becomes possible to put more gas in a bubble, and the gas-liquid liquid mixture with which high concentration gas was mixed can be obtained.

  FIG. 11 is a conceptual explanatory diagram illustrating a model in which an external force is applied to the bubbles in the gas-liquid mixed liquid and collapses. The nano-sized bubbles B exist stably in the gas-liquid mixture as shown in FIG. 10, but external force is given as an impact by temperature change, pressure change, shock wave, ultrasonic wave, etc. as shown in FIG. Then, the structure at the bubble interface is broken, and the bubble collapses as shown in (b). In other words, the bubbles are stably present due to the structure of a strong hydrogen bond, but the internal pressure is high, and when an external force is applied, the balance at the interface structure of the bubbles is easily broken by the increased internal pressure, and the bubbles Is easily collapsed, so the bubble collapse can be controlled artificially. In addition, the bubbles collapse and gas molecules are released into the liquid, and the released gas molecules try to dissolve in the liquid, but the gas is dissolved in the liquid at a saturated dissolution concentration, so it cannot be dissolved. The gas again forms bubbles. At this time, many bubbles do not become nano-sized, but coalesce of bubbles to become large bubbles, causing a foaming phenomenon, and the gas is separated from the liquid.

  In this way, water containing a large amount of gas can be used as drinking water by becoming a gas-liquid mixture. And, for example, encapsulate bactericidal gas in stable nano-sized bubbles, keep it for a long time to maintain bactericidal properties, separate bactericidal gas from liquid when necessary, and use it as drinking water Is something that can be done.

  Hereinafter, the present invention will be described with reference to examples.

[Example 1]
[Generation of drinking water]
Using the drinking water generating apparatus (gas-liquid mixed liquid generating apparatus) of FIG. 1, drinking water containing nano-sized bubbles was generated using various gases described later as the gas and pure water as the liquid.

  As the gas / liquid mixture generating apparatus, the one having the configuration of FIG. 1 in which the pressurizing unit 1 and the gas / liquid mixing unit 3 are combined with the pump 11 is used. As the pump 11, a pump 11a as shown in FIG.

The ratio of gas to liquid (the amount of gas injected into the liquid) was set to 1: 1 as a volume ratio (volume ratio). Moreover, the rotation speed of the rotary body 21 of the pump 11 was set to 1700 rpm. Under this condition, a gas is injected into water at atmospheric pressure (0.1 MPa), and then pressurized at a pressurization rate ΔP ₁ /t=28.3 MPa / sec. The pressure of the gas-liquid mixture at the time of delivery became 0.6 MPa. Under such conditions, it is considered that the gas is injected into the liquid exceeding the saturated dissolution concentration, the hydrogen bond distance is shortened, and a strong bubble interface structure is formed. This condition (pressurizing condition) is considered to be the best condition at present.

  In addition, the flow path 6 on the upstream side of the decompression unit 5 has an inner diameter of 20 mm. As the decompression unit 5, as shown in FIG. 4 (a), one having an inner diameter that gradually decreases in three stages is used. Specifically, the inner diameter is 14 mm, 8 mm, 4 mm, and each length is about 3.3 mm (decompression). The total length of the part 5 was approximately 1 cm) and was composed of three flow path pipe parts. In addition, a hose having an inner diameter of 4 mm (outer diameter of 6 mm) is used as the flow path 6 and the extension flow path 10 on the downstream side of the decompression unit 5, and the combined length of the downstream flow path 6 and the extension flow path 10 is as follows. It was set to be 2 m. Under these conditions, the decompression unit 5 decompresses the gas-liquid mixture at a maximum decompression speed of 60 MPa / sec and a time of 0.0025 seconds, and further, 1 MPa / sec, time in the downstream channel 6 and the extension channel 10. The gas-liquid mixture was depressurized in 0.5 seconds, and the gas-liquid mixture was depressurized to atmospheric pressure (0.1 MPa) from the tip of the hose. Note that, under such conditions, a gas-liquid mixed liquid in which gas is injected into the liquid exceeding the saturated dissolution concentration and the hydrogen bond distance is shortened and the structure of the bubble interface is strengthened can be stably generated. It is considered a thing. This condition (decompression condition) is considered to be the best condition at the present time.

[Hydrogen bond distance]
FIG. 12 is a graph showing a difference between an infrared absorption spectrum of a gas-liquid mixed solution using nitrogen as a gas and pure water as a liquid and nitrogen saturated water in which nitrogen is dissolved in pure water at a saturated dissolution concentration. is there. It is known that the infrared absorption band due to the OH contraction vibration of water usually has an absorption maximum in the vicinity of 3400 cm ⁻¹ , but as shown in the graph, the gas-liquid mixture has an absorption maximum of OH contraction vibration of 3200 cm ^−. It is shifted to around ¹ . When the absorption maximum is 3400 cm ⁻¹ , the hydrogen bond distance is 0.285 nm. On the other hand, when the absorption maximum is 3200 cm ⁻¹ , the hydrogen bond distance is known to be 0.277 nm, which is shorter than the normal hydrogen bond distance under normal temperature and pressure, and is structured ice or hide. It was concluded that the water was close to the rate. It is considered that a similar structure can be obtained by using a bactericidal gas such as ozone, chlorine or chlorine dioxide, or a gas such as air, oxygen, hydrogen or carbon dioxide instead of nitrogen. Can be used as drinking water.

[Gas volume]
Using pure water as the liquid and various gases as the gas, the amount of gas existing as bubbles in the gas-liquid mixture was measured by the following method.
(1) Various gases were mixed with pure water having a conductivity of 0.1 μS / cm at 25 ° C. to obtain a gas-liquid mixture.
(2) In order to separate large bubbles having a diameter of 1 μm or more from water, the gas-liquid mixture was allowed to stand at 25 ° C. for 1 day. As for the standing time, from the Stokes' law, the bubble rising speed: V = d ² × g / (18 × γ)
(D: bubble diameter, g: gravitational acceleration, γ: kinematic viscosity coefficient)
From this equation, the rate of rise of bubbles of 1 μm is about 2.4 × 10 ⁻⁴ m / s. For example, if the water depth of the container at the time of standing is 50 mm, Bubbles can be removed.
(3) The mass of the gas-liquid mixture was measured with an analytical balance having a minimum measured value of 1 mg.
(4) A gas-liquid mixture and a stirrer of a stirrer are placed in a PE + nylon resin vinyl bag with low gas permeability and moisture permeability, and the vinyl bag is sealed with a sealer in a state where there is no air in the bag. .
(5) Immediately after sealing, the mass of the vinyl bag in which the gas-liquid mixture was sealed was measured with an analytical balance.
(6) The vinyl bag in which the gas / liquid mixture at 25 ° C. was sealed by a hot stirrer was heated to 45 ° C., and the gas / liquid mixture was stirred for about 5 hours. By this temperature rise and stirring, fine bubbles and gas dissolved at a saturated dissolution concentration of 45 ° C. or higher were separated from the gas-liquid mixture and collected on the top of the vinyl bag.
(7) The set temperature of the hot stirrer was set to 25 ° C. at room temperature of 25 ° C., and the mixture was stirred for several hours so as to become a liquid having a saturation solubility of 25 ° C.
(8) Using an analytical balance, the mass of the vinyl bag in which gas and liquid were enclosed was measured.
(9) The mass of the gas-liquid mixture and the amount of change in the mass of the liquid caused by the buoyancy caused by the gas separated from the gas-liquid mixture by heating and stirring were obtained from three mass measurements. The mass change amount is the same as the mass of air having the same volume as the gas volume separated from the gas-liquid mixture, and the volume and mass of the separated gas can be calculated from this value.

  FIG. 13 is a graph showing the gas volume measured in this way. The lower region of each bar graph is the amount of gas that was present as the measured bubble, and the upper region is the saturated amount of gas that follows Henry's law. As shown in the graph, for example, in the case of a gas-liquid mixture using hydrogen and water, 17.6 mL of hydrogen is dissolved in 1 L of pure water at 25 ° C. as a saturated dissolution amount, and 528 mL of gas exists as fine bubbles. It was confirmed. That is, the amount of gas contained in the gas-liquid mixture was 30 times the amount of supersaturated dissolution. Similarly, the amount of gas contained in the gas-liquid mixture with respect to the supersaturated dissolution amount was 36 times for nitrogen, 16 times for argon, and 1.9 times for carbon dioxide. As described above, the gas-liquid mixed liquid can hold the gas in the liquid at a high concentration equal to or higher than the saturated dissolution concentration, and use the gas-liquid mixed liquid containing the gas at the high concentration as drinking water. It is something that can be done.

[Bubble size]
A gas-liquid mixture produced in the same manner as above was instantly frozen, cleaved with a cutter in a vacuum, and methane / ethylene flowed through the fractured surface to discharge, producing a hydrocarbon film (replica film) with transferred irregularities. . A conductive osmium thin film was applied to the replica film, dried sufficiently, and observed with a scanning electron microscope (SEM).

  FIG. 14 is an example of a photograph observed by SEM for a gas-liquid mixture of nitrogen and pure water. Similarly, by observing a photograph, it was confirmed that when nitrogen, hydrogen, argon, or carbon dioxide was used as the gas, the bubble size of the gas-liquid mixture was 100 nm in the diameter distribution peak. Moreover, it is thought that the same structure is observed even when ozone, chlorine, chlorine dioxide, oxygen, or air is used as the gas. The bubbles in the gas-liquid mixture of the above gas and pure water could not be accurately detected by a particle size distribution measuring apparatus such as a dynamic scattering method using a laser. Thus, the drinking water has a gas-liquid mixed liquid structure in which the gas is present as nano-sized bubbles.

[Internal pressure of bubbles]
The pressure inside the bubbles was calculated from the total amount of gas in the gas-liquid mixture. Table 1 shows the total amount of gas and the internal pressure of bubbles calculated from the total amount of gas in a gas-liquid mixture of nitrogen or argon and 25 ° C. pure water.

The internal pressure of the gas in the bubbles is calculated by the following method.
The equation of state of gas is
PV / T = (const)
(P: internal pressure, V: volume, T: internal temperature)
When T is constant, PV = (const)
It is represented by

And the volume of bubbles in the gas-liquid mixture can be calculated from the density of the gas-liquid mixture,
The relationship of atmospheric pressure × total gas volume = bubble internal pressure × total gas volume in liquid is established, and the internal gas pressure in the bubbles is calculated by applying the above measured gas amount to this relational expression. The pressure value is as follows.

For example, if the gas is nitrogen,
Assuming that the volume of water in 1 liter of gas-liquid mixture is w1 liter and the volume of gas in water is w2 liter,
The following relational expression holds for the volume.

w1 + w2 = 1 liter (Formula A)

In addition, the following relational expression holds for the mass.

w1 × density of water + w2 ÷ 22.4 (liter) × 28 (nitrogen molecular weight) = measured mass (Formula B)
Water density: 997.1g / L for pure water at normal temperature and pressure
22.4 liters: volume of 1 mol of gas Measured mass: 988.3 as shown in Table 1

Solving the above two equations (Equations A and B),
Since w2 = 8.84 × 10 ^ (-3) is calculated,
Internal pressure of gas = atmospheric pressure x total volume of gas ÷ total volume of gas in liquid
= 0.1 x (value in Table 1) / w2
= 0.1 × 0.56 ÷ (8.84 × 10 ^ (-3))
= 6.3 MPa
It becomes.

  In the above calculation, it was assumed that the internal temperature of the bubble was constant (normal temperature), but the actual internal temperature of the bubble is also expected to be higher than the atmospheric temperature (normal temperature). It can be predicted from the gas state equation that the pressure is higher than the above calculation result.

  By the way, in general, the internal pressure of bubbles is calculated as follows. The bubbles are pressurized by the interfacial tension between the gas-liquid interface, and this interfacial tension is derived by Young Laplace's equation (the following equation).

ΔP = 2σ / r
(ΔP: rising pressure, σ: surface tension, r: bubble radius)
According to this equation, for example, in the case of a bubble having a diameter of 100 nm, the bubble internal pressure is 3 MPa.

  On the other hand, the internal pressure in the gas-liquid mixed liquid is 6.3 MPa in the case of nitrogen, for example, as shown in Table 1. In this gas-liquid mixed liquid, bubbles having a diameter of 100 nm are dispersed as shown in the SEM photograph. Therefore, it was confirmed that the bubbles of the gas-liquid mixture had an internal pressure that was about twice or more the value calculated from the Young Laplace equation. Therefore, it was concluded that a stronger interface structure was formed at the bubble interface. And when gas is ozone, chlorine, chlorine dioxide, oxygen, air, hydrogen, and carbon dioxide, it is thought that the bubble which the internal pressure became high similarly is formed. As described above, the gas-liquid mixed solution containing nano-sized bubbles whose internal pressure is increased can be used as drinking water.

[Bubble distribution]
The amount of bubble distribution (number) was calculated from Table 1.

When the gas is nitrogen, the total amount of bubbles returned to the atmosphere (0.1 MPa) is 0.56 L, and the internal pressure of the bubbles is 6.3 MPa. Therefore, the total volume V1 of bubbles in water is assumed to change isothermally, PV From = const
V1 = 0.56 × 0.1 ÷ 6.3
It becomes.

Since the bubbles are spheres with a radius r = 50 nm, the volume V2 per bubble is
V2 = 4/3 × π × r ^ 3
It becomes.

  From the above, the number of bubbles per liter of water n = V1 ÷ V2 = 1.7 × 10 ^ 16 is calculated.

  Similarly, the number of bubbles per liter of water is calculated as 1.7 × 10 ^ 16 when the main component of the gas is argon.

[Stability of gas-liquid mixture]
FIG. 15 shows the ratio of gas abundance in the gas-liquid mixture with respect to the saturated dissolution concentration when the gas-liquid mixture produced by mixing air and water is sealed in a glass bottle and stored at a constant temperature as the degree of supersaturation. It is a graph to display. From the graph, it can be seen that the degree of supersaturation is almost constant even after 400 hours, and hardly changes. Therefore, it is confirmed that the gas-liquid mixed solution is stable, and this stable gas-liquid mixed solution can be used as drinking water.

[Temperature control]
When the drinking water (gas-liquid mixture) produced as described above is heated with a heater and the temperature of the liquid is increased from 25 ° C. to 40 ° C., the nano-sized bubbles collapse with the increase in temperature and are visually observed. Bubbles that were larger than the micro size that can be confirmed by the above were generated. It was confirmed that the liquid became cloudy with micro-order bubbles and gas was released from the liquid surface.

[Ultrasonic control]
The drinking water (gas-liquid mixture) produced as described above was irradiated with ultrasonic waves at an output of 100 W using a 40 kHz Langevin type vibrator. With the instantaneous irradiation of about 0.05 seconds, the nano-sized bubbles collapsed and bubbles of a micro size or larger that can be visually confirmed were instantaneously generated. By irradiating with ultrasonic waves for several seconds (about 3 to 30 seconds), almost all of the nano-sized bubbles collapsed, and bubbles that were larger than the micro size that could be visually confirmed were rapidly generated. It was confirmed that the liquid became cloudy with micro-order bubbles and gas was released from the liquid surface.

[Pressure control]
The drinking water (gas mixture) produced as described above was put into a sealed container whose pressure can be changed, and pressurized or decompressed using a pump (pressurizing pump or decompressing pump). In both cases of pressurization and depressurization, it was confirmed that the nano-sized bubbles collapsed to generate bubbles having a micro size or larger that can be visually confirmed. Note that the pressure of drinking water can be controlled by making the container 16 of FIG. 7 a sealed container that can be pressure-adjusted using a pump or the like.

  Moreover, since the pressure distribution (bias) in the drinking water (gas-liquid mixture) is generated even by stirring, the gas can be separated. When stirring blades were put in the container 16 of FIG. 7 and stirred, it was confirmed that the nano-sized bubbles collapsed to generate bubbles of micro size or larger that can be visually confirmed.

[Shock wave control]
When the drinking water (gas mixture) manufactured as described above is put into an injection device that injects liquid with a pulsating flow and is injected toward the wall-like body, the drinking water collides with the wall-like body as droplets. The nano-sized bubbles collapsed immediately after the collision, and it was confirmed that bubbles having a micro size or larger that can be visually confirmed were generated. This foaming phenomenon is due to the generation of a shock wave inside the droplet when the droplet collides.

FIG. 16 is a model diagram showing how a shock wave is applied to drinking water as described above. As shown in FIG. 16 (a), the water for drinking is in a pulsating flow before being jetted, so that it becomes a group of non-uniform droplets W after the jetting, Collide with the surface. At this time, as shown in FIG. 16B, the droplet W collides and the wall-shaped body 31 vibrates, and a shock wave Z is generated inside the droplet W. Then, as shown in FIG. 16 (c), by the impact of the shock wave Z, foaming phenomenon of micro-sized more bubbles B _M is thought to occur within the droplet W.

[Example 2]
[Generation in the cooled state]
In the drinking water generating apparatus of FIG. 9, the drinking water generating apparatus (gas-liquid mixed liquid) using air and water in a cooled state (5 ° C.) using the drinking water generating apparatus in which the pretreatment unit 19 is configured by a cooling unit. Was generated. When this drinking water was stored in a container so as to come into contact with the atmosphere at normal temperature and pressure, it was confirmed that the saturated dissolution concentration of gas in water could be maintained for one week or more. Therefore, it was confirmed that the gas stabilized in a high concentration and present in the liquid can be obtained, for example, by using a bactericidal gas, it is possible to obtain drinking water that maintains bactericidal properties for a long time.

DESCRIPTION OF SYMBOLS 1 Pressurization part 2 Gas supply part 3 Gas-liquid mixing part 4 Gas separation part 5 Pressure reduction part 6 Flow path 7 Discharge part 8 Gas removal part 11 Pump 13 Inlet part 14 Venturi pipe 15 Electrolysis means 17 External force control part 19 Pre-processing part 21 Rotating body

Claims (14)

  The gas becomes nano-sized bubbles and exists in the saturated dissolved water of the gas, and the hydrogen bond distance of water molecules present at the interface with the bubbles is greater than the hydrogen bond distance when water is at normal temperature and pressure. Drinking water, characterized by its short length.   The water for drinking according to claim 1, wherein the pressure of the gas forming the bubbles is 0.12 MPa or more.   The drinking water according to claim 1 or 2, wherein the gas is a bactericidal gas.   The water for drinking according to claim 1 or 2, wherein the gas is carbon dioxide.   The drinking water according to claim 1 or 2, wherein the gas is hydrogen.   The drinking water according to claim 1 or 2, wherein the gas is air or oxygen.   The drinking water according to any one of claims 1 to 6, wherein at least one external force selected from the group consisting of pressure change, temperature change, shock wave and ultrasonic wave is applied to collapse the bubbles, A method for using drinking water, characterized by using gas.   The drinking water according to any one of claims 1 to 6, wherein at least one external force selected from the group consisting of pressure change, temperature change, shock wave and ultrasonic wave is applied to collapse the bubbles, A method for purifying drinking water characterized by separating gas.   A water inlet part that takes in liquid containing water from the outside, a gas supply part that supplies gas to the liquid that has entered from the water inlet part, a pressure part that pressurizes the liquid supplied with the gas, and a gas in the liquid of nano size A gas-liquid mixing unit that generates a gas-liquid mixture by forming bubbles, a gas separation unit that separates bubbles of a size exceeding nanosize from the gas-liquid mixture, and a gas-liquid mixture in a pressurized state are converted into nano-sized bubbles A beverage water generating apparatus comprising: a decompression unit that decompresses to atmospheric pressure without causing a collapse, and a discharge unit that discharges the decompressed gas-liquid mixture.   The drinking water generating device according to claim 9, further comprising a cooling unit that cools the liquid taken in from the water inlet.   The drinking water generating device according to claim 9 or 10, further comprising a purification filter for purifying the liquid taken in from the water inlet.   The drinking water generating apparatus according to any one of claims 9 to 11, further comprising a deaeration unit that deaerates the liquid taken in from the water intake unit.   The water generator for drinking according to any one of claims 9 to 12, wherein at least a part of the gas-liquid mixing part is constituted by a Venturi tube.   The water generator for drinking according to any one of claims 9 to 12, wherein at least a part of the gas-liquid mixing part is constituted by electrolysis means.