JP2017029984A - Apparatus and method for producing substance imparted liquid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce a liquid imparted with an object substance which is insoluble, poorly soluble or sparingly soluble in the predetermined liquid.SOLUTION: An apparatus for producing an aroma imparted liquid includes: a microbubble liquid producing unit 10; and an aroma component imparting unit 11. The aroma component imparting unit 11 imparts an aroma component being one of object substances to nitrogen gas, and supplies the aroma imparted nitrogen gas to the microbubble liquid producing unit 10. The microbubble liquid producing unit 10 produces water containing microbubbles that retain the aroma component, as an aroma imparted liquid. The microbubble liquid producing unit 10 includes: a microbubble producing nozzle 2; pressurized liquid producing unit 3; delivery piping 41; auxiliary piping 42; return piping 43; a pump 44; and a liquid storage unit 45. In the pressurized liquid producing unit 3, a gaseous matter containing the aroma component and water are mixed in a mixing nozzle 31, and a mixed fluid 72 becomes a pressurized liquid 71 under a pressurized environment and is led to the microbubble producing nozzle 2. When the pressurized liquid 71 is jetted from the microbubble producing nozzle 2, microbubbles are deposited.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a technique for producing a liquid containing a substance that is insoluble, hardly soluble or slightly soluble in a predetermined liquid.

  Patent Document 1 discloses a technique of providing a fragrance containing portion for storing a fragrance so as to communicate with an intake pipe in a bubble generating device for a bathtub. As a result, it is possible to enjoy the scent without damaging the pump, bath tub, bath tub, etc. with the bath agent. Patent Document 2 includes a scent component dissolving device that dissolves scent components in bath water, and further a fine bubble generating device that ejects 0.1 to 100 micrometer fine bubbles.

  On the other hand, in recent years, research on techniques for generating water containing fine bubbles has been actively conducted. For example, Non-Patent Document 1 discloses a device that generates a large amount of so-called nanobubbles. Non-Patent Document 2 reports that nanobubbles exist stably in water.

JP 2000-288054 A JP 2007-68591 A

“FZ1N-02 nanobubble generator” catalog, [online], May 23, 2011, IDEC Corporation, [searched on December 20, 2011], Internet <URL: http://www.idec.com/ jpja / products / dldata / pdf_b / P1383-0.pdf> Koichi Terasaka and 5 others, “Examination of analysis method of nanobubbles generated by gas-liquid mixed shearing method”, Proceedings of Annual Meeting 2011 of Multiphase Flow Society of Japan, Annual Meeting of Japanese Society of Multiphase Flow 2011 (Kyoto) Committee, August 2011, P424-425

  By the way, conventionally, in order to produce a liquid that emits a scent, a substance that generates a scent, that is, a substance that releases scent molecules is added to the liquid. However, when such a liquid is used in foods and beverages, a substance that is a source of fragrance affects the taste. Moreover, even if it is going to give fragrance molecule itself to water, when fragrance molecule is insoluble in water or hardly soluble, fragrance cannot be given to water itself. When the scent molecule is water-soluble, the scent is not released from the water.

  This invention is made | formed in view of the said subject, and it aims at producing | generating the said liquid containing a substance insoluble, hardly soluble, or slightly soluble with respect to a predetermined | prescribed liquid.

  Invention of Claim 1 is a substance provision liquid production | generation apparatus which produces | generates the substance provision liquid which provided the substance to the liquid, Comprising: The substance provision gas production | generation part which contains a target substance in gas, The said substance provision gas generation part A fine bubble liquid generation unit that mixes the gas from the above and a liquid to generate a substance-giving liquid containing 100 million or more per minute of fine bubbles of the gas having a diameter of 1 μm or less The target substance is insoluble, hardly soluble or slightly soluble in the liquid, and the fine bubble liquid generation unit generates a pressurized liquid in which the gas is pressurized and dissolved in the liquid. And a fine bubble generating nozzle for generating fine bubbles of the gas in the liquid by ejecting the pressurized liquid.

  Invention of Claim 2 is the substance provision liquid production | generation apparatus of Claim 1, Comprising: The said substance provision gas production | generation part was provided in the gas flow path which sends the said gas to the said fine bubble liquid production | generation part It is a substance container.

  Invention of Claim 3 is a substance provision liquid production | generation apparatus of Claim 1 or 2, Comprising: The said gas is an inert gas.

  Invention of Claim 4 is the substance provision liquid production | generation apparatus in any one of Claim 1 thru | or 3, Comprising: The said pressurization liquid production | generation part carries out the gas and liquid from the said substance provision gas production | generation part. A mixing nozzle that mixes and ejects, and a mixed fluid that has been ejected from the mixing nozzle flows in a pressurized environment, and a mixed fluid that has just been ejected from the mixing nozzle collides with the mixed fluid. A flow path and a second flow path that is located below the first flow path and in which the mixed fluid that has fallen from the first flow path flows in a pressurized environment, and the fine bubble liquid generation unit includes: A liquid storage section for storing a target liquid; and a pump for returning the target liquid to the mixing nozzle as the liquid, wherein the fine bubble generating nozzle is obtained from the mixed fluid from the second flow path. By ejecting the pressurized liquid into the target liquid To generate fine bubbles of the gas in the target liquid, by the operation of the pump, the target liquid is the material imparting solution.

  Invention of Claim 5 is a substance provision liquid production | generation apparatus of Claim 4, Comprising: The said micro bubble liquid production | generation part is a part of said mixed fluid from the said mixed fluid from the said 2nd flow path. And a surplus gas separation part that separates the gas, and an auxiliary flow path that guides the part of the mixed fluid from the surplus gas separation part to the liquid storage part.

  The invention according to claim 6 is a substance application liquid generating method for generating a substance application liquid in which a substance is applied to a liquid, a) a step of including a target substance in a gas, and b) including the target substance And a step of mixing a gas and a liquid to produce a substance-giving liquid containing 100 million or more per minute of fine gas bubbles having a diameter of 1 μm or less, wherein the target substance is the liquid In the step b), a pressurized liquid in which the gas is pressurized and dissolved in the liquid is generated in the step b), and the pressurized liquid is fine. The fine bubbles of the gas are generated in the liquid by being ejected from the bubble generation nozzle into the target liquid.

  A seventh aspect of the present invention is the substance applying liquid generating method according to the sixth aspect, wherein the target substance is allowed to pass through the gas in the step of including the target substance in the gas.

  According to the substance applying liquid generating apparatus according to the present invention, it is possible to generate the liquid containing a substance that is insoluble, hardly soluble or slightly soluble in a predetermined liquid.

It is sectional drawing of a scent imparting liquid production | generation apparatus. It is sectional drawing of a mixing nozzle. It is sectional drawing of a fine bubble production | generation nozzle. It is a figure which shows the example in which a some fragrance component provision part is provided. It is a figure which shows the other example in which a some fragrance component provision part is provided.

  FIG. 1 is a cross-sectional view showing a scent imparting liquid generating apparatus 1 according to an embodiment of the present invention. The scent imparting liquid generating apparatus 1 includes a fine bubble liquid generating unit 10 and a scent component providing unit 11. The fine bubble liquid production | generation part 10 mixes gas and a liquid, and produces | generates the liquid containing the nano bubble which is the fine bubble of the said gas. The scent component imparting unit 11 includes the scent component in the gas sent to the fine bubble liquid generating unit 10. In the scent component imparting unit 11, various types of scent components are imparted to the gas from a substance that emits a scent. The scent component is a scent molecule or an equivalent thereof, and is used to exclude a substance that releases a scent, that is, a substance that releases a retained scent molecule. However, if the scent component is an assembly that is as small as a molecule, it does not assume that all the individual molecules exist in a separated state.

  In the scent imparting liquid generating apparatus 1, the scent component imparting unit 11 executes a step of including the scent component in the gas. In the fine bubble liquid production | generation part 10, the process of producing | generating the liquid containing a nano bubble as a fragrance | flavor providing liquid by mixing the gas containing a fragrance component and a liquid is performed.

  The fine bubble liquid generation unit 10 includes a fine bubble generation nozzle 2, a pressurized liquid generation unit 3, a delivery pipe 41, an auxiliary pipe 42, a return pipe 43, a pump 44, and a liquid storage part 45. The target liquid 91 is stored in the liquid storage unit 45, and by operating the scent imparting liquid generating apparatus 1, a scent is imparted to the target liquid 91, and the target liquid 91 becomes a scent imparting liquid. In the present embodiment, water is used as the target liquid 91 before processing. Nitrogen gas is used as a gas mixed with water.

  The delivery pipe 41 connects the pressurized liquid generation unit 3 and the fine bubble generation nozzle 2. The pressurized liquid generating unit 3 generates a pressurized liquid 71 obtained by pressurizing and dissolving a gas, and supplies the pressurized liquid 71 to the fine bubble generating nozzle 2 via the delivery pipe 41. The ejection port of the fine bubble generating nozzle 2 is located in the liquid storage unit 45, and the delivery pipe 41 substantially connects the pressurized liquid generation unit 3 and the liquid storage unit 45.

  By ejecting the pressurized liquid 71 from the fine bubble generating nozzle 2 into the target liquid 91, fine bubbles are generated in the target liquid 91. In the scent imparting liquid generating apparatus 1 according to the present embodiment, fine bubbles of nitrogen having a diameter of less than 1 μm (so-called Nano bubbles) are generated in the target liquid 91. In FIG. 1, in order to facilitate understanding, a parallel oblique line is given to the fluid such as the target liquid 91 by a broken line.

  As with the delivery pipe 41, the auxiliary pipe 42 connects the pressurized liquid generation unit 3 and the liquid storage unit 45. The auxiliary pipe 42 guides the liquid discharged together with the excess gas to the liquid storage unit 45 when the pressurized gas generation unit 3 separates the excess gas. The return pipe 43 is provided with a pump 44, and the target liquid 91 is returned from the liquid reservoir 45 to the pressurized liquid generator 3 via the return pipe 43.

  The pressurized liquid generating unit 3 includes a mixing nozzle 31 and a pressurized liquid generating container 32. The gas inlet of the mixing nozzle 31 is connected to the scent component applying unit 11, and the scent component providing unit 11 is connected to the external nitrogen gas supply unit 8 via a regulator, a flow meter, or the like. In the mixing nozzle 31, the liquid pumped by the pump 44 and the nitrogen gas from the scent component applying unit 11 are mixed by the mixing nozzle 31 and ejected into the pressurized liquid generating container 32.

  The scent component imparting unit 11 is a scent substance containing unit that contains the scented substance 111. This scented substance storage part is provided in the gas flow path which sends gas into the mixing nozzle 31 of the fine bubble liquid production | generation part 10. FIG. The scented substance is a substance that releases a scented component into the gas, and examples thereof include yam, salmon, truffle and the like. Of course, the scented material is not limited to these. In the scent component imparting unit 11, a scent is imparted to the gas by passing the scent substance, and the gas including the scent component is supplied to the mixing nozzle 31.

  The pressurized liquid generating container 32 is pressurized so that the pressure is higher than the atmospheric pressure (hereinafter referred to as “pressurized environment”). The fluid (hereinafter referred to as “mixed fluid 72”) in which the liquid and gas ejected from the mixing nozzle 31 are mixed while flowing in the pressurized liquid generating container 32 under a pressurized environment. It becomes the pressurization liquid 71 which melt | dissolved under pressure.

  FIG. 2 is an enlarged cross-sectional view of the mixing nozzle 31. The mixing nozzle 31 includes a liquid inlet 311 into which the liquid pumped by the pump 44 described above flows, a gas inlet 319 into which gas flows, and a mixed fluid outlet 312 from which the mixed fluid 72 is ejected. The mixed fluid 72 is generated by mixing the liquid flowing in from the liquid inlet 311 and the gas flowing in from the gas inlet 319. The liquid inlet 311, the gas inlet 319, and the mixed fluid outlet 312 are each substantially circular. The flow path cross section of the nozzle flow path 310 from the liquid inlet 311 to the mixed fluid outlet 312 and the flow path cross section of the gas flow path 3191 from the gas inlet 319 to the nozzle flow path 310 are also substantially circular. The channel cross section means a cross section perpendicular to the central axis of the flow path such as the nozzle flow path 310 and the gas flow path 3191, that is, a cross section perpendicular to the flow of fluid flowing through the flow path. In the following description, the area of the channel cross section is referred to as “channel area”. The nozzle flow path 310 is a Venturi tube having a flow path area that becomes smaller in the middle of the flow path.

  The mixing nozzle 31 includes an introduction portion 313, a first taper portion 314, a throat portion 315, a gas mixing portion 316, and a second portion that are continuously arranged in order from the liquid inlet 311 toward the mixed fluid outlet 312. A tapered portion 317 and a lead-out portion 318 are provided. The mixing nozzle 31 also includes a gas supply unit 3192 in which a gas flow path 3191 is provided.

  In the introduction part 313, the flow path area is substantially constant at each position in the direction of the central axis J1 of the nozzle flow path 310. In the first taper portion 314, the flow path area gradually decreases in the liquid flow direction (that is, toward the downstream side). In the throat 315, the flow path area is substantially constant. The channel area of the throat 315 is the smallest in the nozzle channel 310. In the nozzle channel 310, even if the channel area slightly changes in the throat 315, the entire portion having the smallest channel area is regarded as the throat 315. In the gas mixing unit 316, the flow channel area is substantially constant and is slightly larger than the flow channel area of the throat 315. In the second taper portion 317, the flow path area gradually increases toward the downstream side. In the derivation unit 318, the flow path area is substantially constant. The channel area of the gas channel 3191 is also substantially constant, and the gas channel 3191 is connected to the gas mixing unit 316 of the nozzle channel 310.

  In the mixing nozzle 31, the liquid that has flowed into the nozzle channel 310 from the liquid inlet 311 is accelerated by the throat portion 315 and the static pressure is lowered, and the pressure in the nozzle channel 310 is reduced in the throat portion 315 and the gas mixing portion 316. Becomes lower than atmospheric pressure. As a result, gas is sucked from the gas inlet 319, passes through the gas flow path 3191, flows into the gas mixing unit 316, and is mixed with the liquid to generate the mixed fluid 72. The mixed fluid 72 is decelerated at the second tapered portion 317 and the outlet portion 318 to increase the static pressure, and is ejected into the pressurized liquid generating container 32 via the mixed fluid ejection port 312.

  As shown in FIG. 1, the pressurized liquid generating container 32 includes a first flow path 321, a second flow path 322, a third flow path 323, a fourth flow path 324, And 5 flow paths 325. In the following description, the first flow path 321, the second flow path 322, the third flow path 323, the fourth flow path 324, and the fifth flow path 325 are collectively referred to as “flow paths 321 to 325”. The flow paths 321 to 325 are pipelines extending in the horizontal direction, and the cross section perpendicular to the longitudinal direction of the flow paths 321 to 325 is substantially rectangular. In the present embodiment, the width of the flow paths 321 to 325 is about 40 mm.

  The mixing nozzle 31 is attached to the upstream end portion of the first flow path 321 (that is, the left end portion in FIG. 1), and the mixed fluid 72 after being ejected from the mixing nozzle 31 is added. It flows toward the right side in FIG. 1 under a pressure environment. In the present embodiment, the mixed fluid 72 is ejected from the mixing nozzle 31 above the liquid level of the mixed fluid 72 in the first flow path 321, and the mixed fluid 72 immediately after being ejected is in the first flow path 321. It directly collides with the liquid surface before colliding with the downstream wall surface (that is, the right wall surface in FIG. 1). In order to cause the mixed fluid 72 ejected from the mixing nozzle 31 to directly collide with the liquid surface, the length of the first flow path 321 is set to the center of the mixed fluid ejection port 312 (see FIG. 2) of the mixing nozzle 31 and the first. It is preferable to make it larger than 7.5 times the vertical distance between the lower surface of the channel 321.

  In the pressurized liquid generating unit 3, a part or the whole of the mixed fluid ejection port 312 of the mixing nozzle 31 may be located below the liquid level of the mixed fluid 72 in the first flow path 321. As a result, in the same manner as described above, the mixed fluid 72 immediately after being ejected from the mixing nozzle 31 directly collides with the mixed fluid 72 flowing in the first channel 321 in the first channel 321.

  A substantially circular opening 321 a is provided on the lower surface of the downstream end portion of the first flow path 321, and the mixed fluid 72 flowing through the first flow path 321 is located below the first flow path 321. It falls to the two flow paths 322 through the opening 321a. In the second flow path 322, the mixed fluid 72 that has dropped from the first flow path 321 flows from the right side to the left side in FIG. 1 in a pressurized environment, and on the lower surface of the downstream end of the second flow path 322. The liquid drops to the third flow path 323 located below the second flow path 322 through the provided substantially circular opening 322a. In the third flow path 323, the mixed fluid 72 dropped from the second flow path 322 flows from the left side to the right side in FIG. 1 in a pressurized environment, and on the lower surface of the downstream end of the third flow path 323. It drops to the fourth flow path 324 located below the third flow path 323 through the provided substantially circular opening 323a. As shown in FIG. 1, in the first flow path 321 to the fourth flow path 324, the mixed fluid 72 is divided into a liquid layer containing bubbles and a gas layer located thereabove.

  In the fourth flow path 324, the mixed fluid 72 dropped from the third flow path 323 flows from the right side to the left side in FIG. 1 in a pressurized environment, and on the lower surface of the downstream end portion of the fourth flow path 324. It flows (i.e., falls) into the fifth flow path 325 located below the fourth flow path 324 through the provided substantially circular opening 324a. In the fifth channel 325, unlike the first channel 321 to the fourth channel 324, there is no gas layer, and the fifth channel 325 is in the liquid that fills the fifth channel 325. There are slight bubbles in the vicinity of the upper surface. In the fifth flow path 325, the mixed fluid 72 flowing in from the fourth flow path 324 flows from the left side to the right side in FIG.

  In the pressurization liquid production | generation part 3, the flow paths 321-325 of the pressurization liquid production | generation container 32 flow down from top to bottom, repeating steps gradually (namely, the flow in a horizontal direction and the flow in a downward direction). In the mixed fluid 72 (flowing alternately and repeatedly), the gas is gradually dissolved in the liquid under pressure. In the fifth flow path 325, the concentration of the gas dissolved in the liquid is substantially equal to 60% to 90% of the (saturated) solubility of the gas under a pressurized environment. And the excess gas which did not melt | dissolve in the liquid exists in the 5th flow path 325 as a bubble of the magnitude | size which can be visually recognized.

  The pressurized liquid generation container 32 further includes a surplus gas separation unit 326 extending upward from the upper surface on the downstream side of the fifth flow path 325, and the surplus gas separation unit 326 is filled with the mixed fluid 72. The cross section perpendicular to the vertical direction of the surplus gas separation part 326 is substantially rectangular, and the upper end part of the surplus gas separation part 326 is connected to the auxiliary pipe 42 via the throttle part 327 for pressure adjustment. The bubbles of the mixed fluid 72 flowing through the fifth flow path 325 rise in the surplus gas separation unit 326 and flow into the auxiliary pipe 42 together with a part of the mixed fluid 72.

  In this way, the excess gas of the mixed fluid 72 is separated together with a part of the mixed fluid 72, thereby generating a pressurized liquid 71 substantially free of bubbles having a size at least easily visible. It is sent out to the delivery pipe 41 connected to the downstream end portion (that is, the right end portion in FIG. 5) of the five flow paths 325. In the present embodiment, the pressurized liquid 71 dissolves a gas that is about twice or more the gas (saturated) solubility under atmospheric pressure. The liquid of the mixed fluid 72 flowing through the flow paths 321 to 325 in the pressurized liquid generation container 32 can also be regarded as the pressurized liquid 71 in the process of generation. The mixed fluid 72 that has flowed into the auxiliary pipe 42 is guided to the target liquid 91 in the liquid reservoir 45. The auxiliary pipe 42 functions as an auxiliary flow path for preventing a decrease in the target liquid 91 when the pump 44 is operated for a long time.

  An exhaust valve 61 is also provided above the first flow path 321. The exhaust valve 61 is opened when the pump 44 is stopped, and prevents the mixed fluid 72 from flowing back to the mixing nozzle 31.

  FIG. 3 is an enlarged sectional view showing the fine bubble generating nozzle 2. The fine bubble generating nozzle 2 includes a pressurized liquid inlet 21 into which the pressurized liquid 71 flows from the delivery pipe 41 and a pressurized liquid outlet 22 that opens toward the target liquid 91. The pressurized liquid inlet 21 and the pressurized liquid outlet 22 are each substantially circular, and the cross section of the nozzle flow path 20 from the pressurized liquid inlet 21 toward the pressurized liquid outlet 22 is also substantially circular.

  The fine bubble generating nozzle 2 includes an introduction portion 23, a taper portion 24, and a throat portion 25 that are sequentially arranged from the pressurized liquid inlet 21 toward the pressurized liquid outlet 22. In the introduction portion 23, the flow channel area is substantially constant at each position in the direction of the central axis J <b> 2 of the nozzle flow channel 20. In the taper portion 24, the flow path area gradually decreases in the direction in which the pressurized liquid 71 flows (that is, toward the downstream side). The inner surface of the tapered portion 24 is a part of a substantially conical surface with the central axis J2 of the nozzle channel 20 as the center. In the cross section including the central axis J2, the angle α formed by the inner surface of the tapered portion 24 is preferably 10 ° or more and 90 ° or less.

  The throat part 25 connects the taper part 24 and the pressurized liquid ejection port 22. The inner surface of the throat portion 25 is a substantially cylindrical surface, and the flow path area is substantially constant in the throat portion 25. The diameter of the channel cross section in the throat 25 is the smallest in the nozzle channel 20, and the channel area of the throat 25 is the smallest in the nozzle channel 20. The length of the throat 25 is preferably 1.1 to 10 times the diameter of the throat 25, and more preferably 1.5 to 2 times. In the nozzle channel 20, even if the channel area slightly changes in the throat portion 25, the entire portion having the smallest channel area is regarded as the throat portion 25.

  The fine bubble generating nozzle 2 is also provided continuously to the throat portion 25 and encloses the periphery of the pressurizing liquid jet port 22 so as to be separated from the pressurizing liquid jet port 22, and an end portion of the enlarging unit 27 And an enlarged-portion opening 28 provided at the top. The flow path 29 between the pressurized liquid jet port 22 and the enlarged portion opening 28 is a flow path provided outside the pressurized liquid jet port 22 and is hereinafter referred to as an “external flow path 29”. The channel cross section of the external channel 29 and the enlarged portion opening 28 are substantially circular, and the channel area of the external channel 29 is substantially constant. The diameter of the external flow path 29 is larger than the diameter of the throat portion 25 (that is, the diameter of the pressurized liquid ejection port 22).

  In the following description, an annular surface between the edge of the inner peripheral surface of the enlarged portion 27 on the side of the pressurized liquid jet port 22 and the edge of the pressurized liquid jet port 22 is referred to as a “jet port end surface 221”. In the present embodiment, the angle formed by the central axis J2 of the nozzle flow path 20 and the external flow path 29 and the jet end face 221 is about 90 °. The diameter of the external channel 29 is 10 mm to 20 mm, and the length of the external channel 29 is approximately equal to the diameter of the external channel 29. In the fine bubble generating nozzle 2, an external channel 29 that is a recess is formed at the end opposite to the pressurizing liquid inlet 21, and the pressurizing liquid that is an opening smaller than the bottom at the bottom of the recess. It can be understood that the spout 22 is formed. In the enlargement unit 27, the flow path area of the pressurized liquid 71 between the pressurized liquid ejection port 22 and the target liquid 91 in the liquid storage unit 45 is enlarged.

  In the fine bubble generating nozzle 2, the pressurized liquid 71 that has flowed into the nozzle flow path 20 from the pressurized liquid inlet 21 flows to the throat part 25 while being gradually accelerated in the tapered part 24, and passes through the throat part 25. It is ejected as a jet from the pressurized liquid ejection port 22. The flow rate of the pressurizing liquid 71 in the throat 25 is preferably 10 m to 30 m per second, and in this embodiment is about 20 m per second. In the throat 25, the static pressure of the pressurized liquid 71 is reduced, so that the gas in the pressurized liquid 71 becomes supersaturated and precipitates in the liquid as fine bubbles. The fine bubbles pass through the external flow path 29 of the enlargement unit 27 together with the pressurized liquid 71 and diffuse into the target liquid 91 in the liquid storage unit 45. In the fine bubble generating nozzle 2, the fine bubbles are deposited while the pressurized liquid 71 passes through the external flow path 29. The fine bubbles generated by the fine bubble generating nozzle 2 are so-called nano bubbles having a diameter of less than 1 μm. When the ejection of the liquid and the fine bubbles from the fine bubble generating nozzle 2 is stopped, the external flow path 29 is filled with the target liquid 91.

  As described above, in the fine bubble generating nozzle 2, the tapered portion 24 in which the flow passage area gradually decreases in the direction in which the pressurized liquid 71 flows, and the throat portion in which the flow passage area is the smallest in the nozzle flow passage 20. By providing 25, it is possible to stably generate a large amount of fine bubbles, particularly fine bubbles (nanobubbles) having a diameter of less than 1 μm. In the measurement by LM10 and LM20 of NanoSight Limited (NanoSight Limited), nanobubbles distributed in a range of less than 1 μm with a diameter of about 100 nm as a center by the fine bubble generation nozzle 2 are 1 per 1 mL (milliliter) in the target liquid 91. Over 100 million are generated. This value is the number when the target liquid is generated without being circulated. In the following description, the number of nanobubbles generated by the fine bubble generating nozzle 2 per 1 mL is referred to as “nanobubble generation density”.

  In the fine bubble generating nozzle 2, the enlarged portion 27 surrounding the pressurized liquid ejection port 22 is provided, so that the flow of the target liquid 91 in the liquid storage unit 45 is immediately ejected from the pressurized liquid ejection port 22. The influence on the pressurized liquid 71 can be suppressed. Thereby, also in the pressurizing liquid 71 immediately after jetting from the pressurizing liquid jet port 22, nanobubbles are deposited stably, so that a large amount of nanobubbles can be generated more stably.

  As described above, in the fine bubble generating nozzle 2, the inner surface of the tapered portion 24 is a part of a conical surface centered on the central axis J <b> 2 of the nozzle flow path 20, and the tapered portion 24 in the cross section including the central axis J <b> 2. The angle α formed by the inner surface is 90 ° or less. Thereby, a large amount of nanobubbles can be generated more stably. Further, from the viewpoint of shortening the length of the fine bubble generating nozzle 2 while maintaining the diameters of the introduction portion 23 and the throat portion 25 of the fine bubble generating nozzle 2, the angle α formed by the inner surface of the tapered portion 24 is 10 ° or more. It is preferable that

  In the fine bubble generating nozzle 2, the length of the throat portion 25 is 1.1 to 10 times the diameter of the throat portion 25. When the length of the throat part 25 is 1.1 times or more of the diameter, a large amount of nanobubbles can be generated more stably. For example, when the length of the throat 25 is 0.53 times the diameter, the generation density of nanobubbles (when not circulated) is about 56 million, whereas the length of the throat 25 is 1. When it is 57 times, the generation density of nanobubbles is about 11 million. Further, since the length of the throat portion 25 is 10 times or less of the diameter, it is possible to prevent the resistance generated in the pressurized liquid 71 in the throat portion 25 from becoming excessively large, and the high accuracy of the throat portion 25. Can be easily formed. From the viewpoint of more stably generating a large amount of nanobubbles, it is more preferable that the length of the throat portion 25 is 1.5 to 2 times the diameter.

  In the scent imparting liquid generating apparatus 1, the entire target liquid 91 becomes a liquid (water) containing many nanobubbles by driving the pump 44 for a certain period of time. Specifically, 100 mL of bubbles having a diameter of 1 μm or less are contained per mL. Further, the target liquid 91 is circulated 10 times by the pump 44, so that the nanobubble generation density is 150 to 170 million nanobubbles per mL. Furthermore, it is thought that the nanobubble generation density increases to at least 300 million by continuing the circulation.

  In the generation of bubbles of the size of conventional microbubbles, nanobubbles are not generated so much. Generally, a liquid in which nanobubbles are intentionally generated is 20 million per mL using a measuring device of the upper surgery. It can be defined as a liquid containing a single nanobubble. Therefore, the fragrance imparting liquid using nanobubbles is defined as a liquid containing 20 million or more nanobubbles per mL. However, it is preferable that the scent imparting liquid is a liquid containing 100 million nanobubbles or more per mL as a liquid that can easily identify the scented state.

  Moreover, since the nanobubble is formed by nitrogen gas containing a scent component, the target liquid 91 becomes a liquid that can sense the scent of the scented substance 111. That is, by the operation of the pump 44, the target liquid 91 becomes a scent imparting liquid to which a scent has been imparted.

  The “scented” state does not necessarily indicate a state in which the scent is released, but also includes a state in which the scent component spreads in the nasal cavity when the mouth is contained and the scent can be felt. In addition, it is expected that the scent component is retained at the nanobubble interface, but it is unclear how the scent component exists in the state of pressurized water. The relationship between the precipitation of nanobubbles and the point at which the scent component is retained in the nanobubbles is also unclear.

  FIG. 4 is a diagram illustrating an example in which a plurality of scent component imparting units 11 are provided in the scent imparting liquid generating device 1, and only the vicinity of the scent component imparting unit 11 is illustrated. The plurality of scent component imparting units 11 are a plurality of scent substance accommodation units similar to those in FIG. 1, and scent substances 111 that emit different scent components are accommodated in the plurality of scent substance accommodation units. That is, the plurality of scent component imparting units 11 include different scent components (more precisely, different combinations of a plurality of types of scent molecules) in the gas. The plurality of scent component imparting units 11 are connected in parallel to the gas inlet of the mixing nozzle 31 via the valve 112. Further, nitrogen gas is supplied from the nitrogen gas supply unit 8 to each scent component applying unit 11. By opening and closing the valves 112 individually, various kinds of combinations of scent components are imparted to the nitrogen gas. As a result, various scent imparting liquids can be generated without exchanging the scented substance 111.

  FIG. 5 is a diagram illustrating another example in which a plurality of scent component imparting units 11 are provided. In FIG. 5, the some fragrance component provision part 11 is connected in series. When mixing a plurality of scents without switching, the plurality of scent component imparting units 11 may be connected in series.

  As mentioned above, although the structure and operation | movement of the scent imparting liquid production | generation apparatus 1 were demonstrated, it is implement | achieved by the scent imparting liquid production | generation apparatus 1 to give a scent to water, without making the substance which generate | occur | produces a scent in water. In addition, since the nanobubbles exist stably in water for a long time, the scent imparting liquid can maintain the scent for a long time. As described in Non-Patent Document 1 described above, it has been confirmed that nanobubbles generated in distilled water are stably present in water for 4 months. Moreover, since the substance which discharge | releases a fragrance is not added to water, even if it adds a scent imparting liquid to a foodstuff or a drink, a taste is not impaired.

  When the scent molecule contained in the scent component is insoluble, hardly soluble or slightly soluble in water, the scent molecule cannot be imparted to water itself. On the other hand, in the scent imparting liquid generating apparatus 1, even if the scent molecule is insoluble, hardly soluble or slightly soluble in water, the scent component is confined in the nanobubbles, thereby scenting the water over a long period of time. Sustaining the granted state is realized. In the case of a fragrance molecule that is easily soluble in water, such a molecule is not released from water, and therefore, the fragrance cannot be released from water.

  Next, the sensory evaluation test of the scent imparting liquid generated using the scent imparting liquid generating apparatus 1 will be described.

<Test 1>
In Test 1, yam was used as a scented substance. 2.66 g of pulverized yam (non-heated) was filled in the scent component imparting unit 11, and the pump 44 was continuously operated for 3,000 mL of water for 20 minutes. Under the present circumstances, nitrogen was supplied to the scent component provision part 11 at 0.2 L / min.

  A three-point identification test method was adopted for the sensory evaluation test. The three-point identification test method is a method in which when two types of samples A and B are compared, samples are presented as a set, such as A, A, and B, and one different sample is selected from them. The results are assessed for significance using a test table for a three-point discrimination test.

  In Test 1, two water-only samples and one scent imparting liquid sample were prepared, and an instruction to select the scent imparting liquid was issued. In the test, first, a two-stage method was adopted in which evaluation was made only with the odor and then evaluation was carried out in the mouth.

  There are 15 out of 15 people who correctly selected one sample just by sniffing the sample (hereinafter referred to as “correct answerer”). From the test table of the 3-point discrimination test method, the correct answer rate is It was found that there was a significant difference at a risk rate of 0.1%, that is, the scent of yam was added to the water. Next, after tasting with a sample in the mouth, the correct answer was 13 out of 15 people, and a significant difference was recognized with a risk rate of 0.1%. The accuracy rate was lower than in the scent-only test, but this is thought to be due to the smell of yam remaining in the nasal cavity due to the order of tasting the three samples and smelling the scent before the test. . The flavor of the scent imparting liquid using yam was extremely strong, and several people had a sense that the yam scent remained in the oral cavity even after 10 minutes or more after the test was completed.

<Test 2>
In Test 2, eggplant was used as a scented substance. 7.14 g of coconut skin finely chopped with a kitchen knife was filled in the scent component imparting unit 11, and the pump 44 was continuously operated under the same conditions as in Test 1. Also in Test 2, a three-point identification test method was adopted, two water-only samples and one scent imparting liquid sample were prepared, and an instruction to select a scent imparting liquid was issued. In the test, first, a two-stage method was adopted in which evaluation was made only with the odor and then evaluation was carried out in the mouth.

  Also in Test 2, first, 15 out of 15 people correctly selected one sample that differs only in odor. From the test table of the 3-point discrimination test method, this correct rate is 0.1%. It was confirmed that there was a significant difference, that is, the scent of eggplant was given to the water. Furthermore, in the evaluation after tasting, the correct answer was 14 out of 15 and a significant difference was confirmed.

<Test 3>
In Test 3, the scent imparting liquid produced by the same method as in Test 1 and passed for one day was tested using only the odor as in Test 1. As a result, the correct answer rate was only 6 out of 15. It is considered that the release of the scent component from the scent imparting liquid settled down after one day, and the scent was reduced as compared to immediately after production. On the other hand, in the comparison by taste, a sufficient scent of yam could be confirmed. In addition, even in the scent imparting liquid after 4 weeks, a sufficient scent of yam could be confirmed in the comparison by taste.

<Test 4>
In Test 4, black truffles were used as fragrant substances. Black truffles finely chopped with a kitchen knife (the amount is unknown) were filled in the scent component imparting unit 11 and the pump 44 was continuously operated under the same conditions as in Test 1. Ten people evaluated whether it smelled and had a flavor when it was put in the mouth, compared with water. As a result, 10 people confirmed the scent of truffles in the odor and flavor when included in the mouth.

  From the above test results, it can be confirmed by the scent imparting liquid generating apparatus 1 that the scent is imparted to the water. Conventionally, the scent of food such as yam, eggplant and truffles could not be given to water. This is because the scent component released from the food is insoluble or hardly soluble (or slightly soluble) in water in principle. On the other hand, by using the nanobubbles by the scent imparting liquid generating apparatus 1, it is realized that only the scent component is given to the water without giving the substance itself that releases the scent to the water. Moreover, since nanobubbles exist stably in water for a long time, the state to which the fragrance was given is maintained for a long time.

  In particular, since a remarkable scent is imparted to water when the scented substance is a citrus type such as yam or salmon, it is expected that a high effect will be obtained at least when the scented substance is a citrus type. In addition, when water is added to the scent of yam, the scent is almost never released after a day, and an unprecedented sensation of feeling the scent only after it is put in the mouth is obtained. With such characteristics, a new flavor can be given to the dish. Moreover, there is no good sterilization method other than the radiation sterilization which is not approved in Japan in the case where sterilization is inevitable like spices. For this reason, the fragrance often deteriorates or deteriorates due to sterilization of steam or the like, but scent imparting using nanobubbles does not require sterilization, and a fresh scent can be stably imparted.

  In addition, since the scent imparting liquid does not have a taste itself, even if the scent imparting liquid is given to foods and beverages, it does not affect the taste except for the effect that the scent component spreads to the nasal cavity. Such a feature is particularly suitable for development in alcoholic beverages where it is desired to give various flavors without affecting the taste. As a specific experiment, when the bourbon was cracked with water with a fragrance of yam, the flavor was clearly enhanced with little effect on the taste of bourbon. From this, as an application example of the scent imparting liquid, for example, when manufacturing whiskey, conventionally, a flavoring technique realized by using a barrel with a specific scent such as a sherry barrel is added to the original sake. It is possible to realize variously in a short time by using a scent imparting liquid for water.

  Also, instead of simply mixing the aromatizing liquid and the alcoholic beverage, mixing carbon dioxide and the aromatizing liquid and then mixing with the alcoholic beverage, the same method as the conventional carbonic acid split, Alcoholic beverages can be given a different flavor than simple carbonated cracks with little effect. As described above, the fragrance imparting liquid can give various flavors to various alcoholic beverages containing ethyl alcohol.

  Furthermore, since the scent imparting liquid does not affect the taste, it has characteristics different from conventional fragrances as a material for scenting foods. The content of the fragrance has a limit to clarify the details, but in the scent imparting liquid generating apparatus 1, such a problem does not occur as long as the scented substance 111 can be specified.

  As mentioned above, although embodiment of this invention was described, various deformation | transformation are possible for the said embodiment.

  For example, the liquid mixed with the gas at the mixing nozzle 31 is not limited to complete water, and may be a liquid containing water as a main component. For example, water to which an additive or a non-volatile liquid is added may be used.

  The gas that forms the nanobubbles is not limited to nitrogen, and may be air. However, in order to maintain the quality of the scent component for a long period of time, an inert gas, that is, a gas not containing oxygen or a gas having a low oxygen content (of course, a gas having reactivity with scent molecules than oxygen is not included). ) Is preferable.

  The scent component may be mixed in the gas in advance, and a storage unit such as a cylinder for storing the gas may be provided as the scent component provision unit 11.

  The structure of the fine bubble liquid generation unit 10 may be variously changed, and further, a structure having a different structure may be used. For example, the fine bubble generating nozzle 2 may include a plurality of pressurized liquid ejection ports 22. A pressure regulating valve may be provided between the fine bubble generating nozzle 2 and the pressurized liquid generating unit 3, and the pressure applied to the fine bubble generating nozzle 2 may be kept constant with high accuracy. Other means such as mechanical stirring may be used for mixing the gas and the liquid.

  The scent imparting liquid generating apparatus 1 can also be used as a substance imparting liquid generating apparatus that imparts substances other than scent components to various liquids. Thereby, even if the substance is insoluble, hardly soluble or slightly soluble in a predetermined liquid (hereinafter referred to as “target substance”), the target substance can be included in the liquid. For example, the target substance may be a substance that increases the amount that can be contained in the liquid by using the apparatus as compared with a case where the target substance is simply dissolved in the liquid. In this case, the scent molecule providing unit 11 in FIG. 1 functions as a substance-added gas generating unit that includes the target substance in the gas. And the fine bubble liquid production | generation part 10 mixes the gas from the substance provision gas production | generation part, and a liquid, and produces | generates the liquid containing the nano bubble of the said gas as a substance provision liquid.

  Examples of target substances include, in addition to fragrances, silicone oils, oils and fats, pharmaceuticals (including animal drugs), agrochemical active ingredients, fertilizers, cosmetics, food materials, feeds, fungicides, antifungal agents, insecticides, insecticides It can be selected from a wide range of agents such as agents, rust inhibitors and absorbents.

  In addition, the liquid to which the substance is applied is not limited to water or a liquid containing water as a main component, and for example, ethyl alcohol, glycerin, vegetable oil, etc. can be used. The gas to which the target substance is applied can be variously changed according to the target substance.

  The configurations in the above embodiment and each modification may be combined as appropriate as long as they do not contradict each other.

DESCRIPTION OF SYMBOLS 1 Fragrance imparting liquid production | generation apparatus 2 Fine bubble production | generation nozzle 10 Fine bubble liquid production | generation part 11 Fragrance component provision part 31 Mixing nozzle 43 Auxiliary piping 44 Pump 45 Liquid storage part 71 Pressurization liquid 72 Mixed fluid 91 Target liquid 111 Aroma substance 321 1st Channel 322 Second channel 326 Excess gas separation unit

Claims (7)

A substance application liquid generating device for generating a substance application liquid provided with a substance to a liquid,
A substance-added gas generator that includes the target substance in the gas;
Microbubbles that mix the gas from the substance-added gas generation unit and a liquid to generate a substance-applying liquid containing 100 million or more microbubbles with a diameter of 1 μm or less per mL A liquid generator;
With
The target substance is insoluble, hardly soluble or slightly soluble in the liquid;
The fine bubble liquid generator is
A pressurized liquid generating section for generating a pressurized liquid obtained by pressurizing and dissolving the gas in the liquid;
A fine bubble generating nozzle for generating fine bubbles of the gas in the liquid by ejecting the pressurized liquid;
A substance-imparting liquid generating apparatus comprising: The substance-imparting liquid generator according to claim 1,
The substance-imparting liquid generator is a substance container provided in a gas flow path for sending the gas into the fine bubble liquid generator. The substance-imparting liquid generator according to claim 1 or 2,
The substance applying liquid generating apparatus, wherein the gas is an inert gas. It is a substance provision liquid production | generation apparatus in any one of Claim 1 thru | or 3, Comprising:
The pressurizing liquid generator is
A mixing nozzle that mixes and ejects the gas and liquid from the substance-added gas generating unit;
A first flow path in which the mixed fluid after being ejected from the mixing nozzle flows in a pressurized environment, and the mixed fluid immediately after being ejected from the mixing nozzle collides with the mixed fluid;
A second channel that is located below the first channel and in which the mixed fluid dropped from the first channel flows in a pressurized environment;
With
The fine bubble liquid generator is
A liquid reservoir for storing the target liquid;
A pump for returning the target liquid to the mixing nozzle as the liquid;
Further comprising
The fine bubble generating nozzle generates fine bubbles of the gas in the target liquid by ejecting the pressurized liquid obtained from the mixed fluid from the second flow path into the target liquid,
The substance application liquid generating apparatus, wherein the target liquid becomes the substance application liquid by operating the pump. It is a substance provision liquid production | generation apparatus of Claim 4, Comprising:
The fine bubble liquid generator is
An excess gas separation unit that separates gas together with a part of the mixed fluid from the mixed fluid from the second flow path;
An auxiliary flow path for guiding the part of the mixed fluid from the surplus gas separation unit to the liquid storage unit;
A substance-imparting liquid generating apparatus further comprising: A substance application liquid generation method for generating a substance application liquid in which a substance is applied to a liquid,
a) including a target substance in a gas;
b) mixing the gas containing the target substance with a liquid to produce a substance-giving liquid containing 100 million or more per minute of fine bubbles of the gas having a diameter of 1 μm or less;
With
The target substance is insoluble, hardly soluble or slightly soluble in the liquid;
In the step b), the pressurized liquid generating unit generates a pressurized liquid in which the gas is pressurized and dissolved in the liquid, and the pressurized liquid is ejected from the fine bubble generating nozzle into the target liquid. A method for producing a substance-imparting liquid, wherein fine bubbles of the gas are produced in the liquid. The method for producing a substance-imparting liquid according to claim 6,
In the step of causing the target substance to be included in the gas, the substance-applying liquid generating method, wherein the target substance is passed through the gas.

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