JP2018102293A - Beverage manufacturing system and beverage manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a beverage manufacturing method for preventing deterioration of flavor of beverage by nitrogen substitution as well as sterilizing or providing antibacterial activity.SOLUTION: There is provided a beverage manufacturing system 100 having a degasification part 130 for reducing gas concentration in beverage and a superfine air bubble generation part 120 for generating superfine air bubbles in the beverage, and the superfine air bubble generation part has a storage part 123 for storing the beverage. A beverage manufacturing method using the beverage manufacturing system has a first degasification process for degassing the beverage and reducing dissolved gas concentration, a nitrogen bubble generation process for generating the superfine air bubbles by nitrogen gas in the degassed beverage, and a heat sterilization process for heat sterilizing the beverage containing the superfine air bubbles by the nitrogen gas.EFFECT: By nitrogen substitution of dissolved oxygen in beverage with superfine air bubbles by nitrogen gas, generation of smell of burning by heating sterilization in a post process can be prevented. The beverage is sterilized by physical energy which generates the superfine air bubbles.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a beverage production system and a beverage production method typified by milk and fruit juice, and more particularly to a beverage production system and a beverage production method having a sterilization step.

  Beverages such as milk and fruit juice are generally sterilized by heating in the production process and distributed to the market. However, it is known that when a beverage is heated, an oxidized odor, also called a burnt odor, is generated by the action of dissolved oxygen in the beverage. Therefore, in the manufacture of beverages that include heat sterilization in the manufacturing process, a so-called nitrogen replacement process may be performed in which dissolved oxygen is degassed before the heat treatment, and nitrogen gas is replaced with oxygen.

  For example, in the nitrogen gas replacement device described in Patent Document 1, a so-called ultra-high temperature instantaneous sterilization method (UHT method) in which beverages such as milk and fruit juice are subjected to nitrogen replacement treatment and then sterilized under heating conditions of 130 ° C. for 2 seconds. ) Is described. In this apparatus, since the heat sterilization treatment is performed after the nitrogen gas replacement treatment by direct mixing and dispersion, it is possible to provide a beverage that suppresses the generation of a burning odor due to the influence of dissolved oxygen and does not deteriorate the flavor.

Japanese Patent No. 3091752

  However, such a nitrogen gas replacement device only replaces nitrogen gas with a beverage only to prevent the deterioration of flavor, and it is considered that a gas such as nitrogen gas acts on the beverage for other purposes. It was not done.

  (1) The beverage production method according to the present invention includes a first degassing step for degassing a beverage and reducing a dissolved gas concentration, and generation of nitrogen bubbles for generating ultrafine bubbles by nitrogen gas in the degassed beverage. A process and a heat sterilization process of heat sterilizing a beverage containing ultrafine bubbles by nitrogen gas.

  According to this beverage manufacturing method, after reducing the dissolved oxygen concentration of the beverage in the first degassing step, nitrogen substitution is performed on the beverage with ultrafine bubbles of nitrogen gas, thereby reducing the flavor deterioration due to subsequent heat sterilization. In addition to being able to prevent, ultrafine bubbles due to nitrogen gas continue to stay in the beverage, so that the beverage can have an antibacterial action.

  (2) The beverage production method described above includes a carbon dioxide bubble generating step of generating ultrafine bubbles by carbon dioxide gas in the degassed beverage between the degassing step and the nitrogen bubble generating step, and degassing the beverage. And a second degassing step for reducing the dissolved gas concentration.

  According to such a beverage production method, the ultrafine bubbles of carbon dioxide are generated for the beverage whose dissolved oxygen concentration is reduced by the first degassing step, and thereby the post-process due to the bactericidal effect of carbon dioxide. It is possible to sterilize heat-resistant bacteria that are difficult to sterilize in this heat sterilization step. Furthermore, by replacing the ultrafine bubbles caused by carbon dioxide with the ultrafine bubbles caused by nitrogen, it is possible to prevent the flavor from being deteriorated in the subsequent heat sterilization step.

  (3) The nitrogen bubble generating step or the carbon dioxide bubble generating step may include generating fine bubbles, and irradiating the fine bubbles with ultrasonic waves to convert them into ultrafine bubbles. According to such a beverage production method, the beverage is sterilized by the ultrasonic sterilization effect by irradiating the beverage with ultrasonic waves. Ultrasonic sterilization can sterilize heat-resistant bacteria that cannot be sterilized by heat sterilization, and can increase beverage safety.

  (4) The beverage manufacturing method described above may include a heating step of heating the beverage before the first degassing step. According to such a beverage production method, the beverage is heated before the first deaeration step, so that the dissolved oxygen concentration in the beverage is reduced, and the deaeration is efficiently performed in the first deaeration step. be able to.

  (5) Further, in the heating step, the beverage may be heated by applying a high pressure to the beverage. According to such a beverage production method, it is possible to improve the deaeration property of the deaeration step together with the effect of physical sterilization by applying a high pressure.

  (6) In the beverage production method described above, the first or second deaeration step deaerates the beverage by decompressing the stored beverage. According to such a beverage production method, the beverage can be decompressed in a stable state, and the beverage can be efficiently deaerated.

  (7) The beverage production system according to the present invention includes a deaeration unit that lowers the gas concentration in the beverage, and an ultrafine bubble generation unit that generates ultrafine bubbles in the beverage. A storage unit for storing a beverage is provided.

  According to this beverage production system, the deaeration unit lowers the gas concentration in the beverage, and the ultrafine bubble generation unit generates ultrafine bubbles in the beverage, thereby replacing the dissolved oxygen in the beverage with a desired gas. be able to. Moreover, the beverage containing ultrafine bubbles is stored in the storage unit. Thereby, an antibacterial action can be held in a beverage.

  (8) The said deaeration part may be integrated in the circulation path which circulates the drink stored by the storage part. In such a beverage production system, the beverage stored in the storage unit through the circulation path can be passed through the deaeration unit a plurality of times to reduce the gas concentration of the beverage to a desired value.

  (9) The beverage production system described above further includes a homogenizing unit that applies high pressure to the beverage to uniformize the particles in the beverage, and the deaeration unit is provided downstream of the homogenizing unit. Good. In such a beverage production system, the particles in the beverage are pulverized and homogenized in the homogenizing unit, and the beverage is heated by applying a high pressure, the gas concentration in the beverage is lowered, and is provided downstream. The deaeration by the deaeration part can be performed efficiently.

  (10) The ultrafine bubble generation unit may generate ultrasonic bubbles on the bubble-containing beverage containing the fine bubbles to generate the fine bubbles into the ultrafine bubbles. In such a beverage production system, the beverage is sterilized by the effect of physical sterilization using ultrasonic waves by irradiating the beverage with ultrasonic waves. Physical sterilization can sterilize heat-resistant bacteria that cannot be sterilized by heat sterilization, and can increase beverage safety.

  (11) In the beverage production system, the storage unit may include a decompression port for depressurization and a pressurization port for pressurization. According to such a beverage manufacturing method, the beverage can be depressurized from the pressurized and stored state, and the beverage can be deaerated by repeating the pressurization and depressurization.

  The present invention can prevent deterioration of the beverage flavor by nitrogen substitution, and can sterilize or antibacterial beverage.

It is a figure which shows the functional block of the drink manufacturing system which concerns on the 1st Embodiment of this invention. It is the schematic which shows the high voltage | pressure application part of the equalization part of the drink manufacturing system shown in FIG. It is the schematic which shows the refinement | miniaturization part of the equalization part of the drink manufacturing system shown in FIG. It is a figure which shows the bubble generator of the drink manufacturing system shown in FIG. It is a figure which shows the bubble collapse part of the drink manufacturing system shown in FIG. It is a figure which shows the storage part of the drink manufacturing system shown in FIG. It is the schematic which shows the deaeration part of the drink manufacturing system shown in FIG. It is a figure which shows the functional block of the drink manufacturing system which concerns on the 2nd Embodiment of this invention. It is a flowchart of the drink manufacturing method which concerns on 1st Example of this invention. It is a flowchart of the drink manufacturing method which concerns on the 2nd Example of this invention. It is a figure which shows the storage part which concerns on the modification of a drink manufacturing system, (A) is a top view, (B) is sectional drawing of BB of (A). The bubble containing liquid inlet of the storage part of FIG. 11 is shown, (A) is a front view of a bubble containing liquid inlet, (B) shows the side view of a bubble containing liquid inlet.

[First Embodiment]

  A beverage production system 100 according to a first embodiment will be described with reference to FIGS. The beverage production system 100 performs homogenization of particles in a beverage, removal of dissolved oxygen in the beverage, sterilization of the beverage, and the like when producing a beverage typified by milk or fruit juice. In the present embodiment, mainly the production of milk containing particles such as fat globules will be described. However, the beverage manufacturing system 100 may be applied to other beverages.

  FIG. 1 shows a functional block diagram of a beverage manufacturing system 100. The beverage production system 100 mainly includes a homogenizing unit 110 that homogenizes the beverage, an ultrafine bubble generating unit 120 that generates bubbles in the beverage, and a deaeration unit 130 that degass the dissolved oxygen in the beverage. Prepare.

  Moreover, the beverage manufacturing system 100 takes out the drink to the outside, the drink introduction part 140 which introduces a drink into the homogenization part 110, the gas introduction part 150 which introduces gas into the equalization part 110 and the ultrafine bubble generation part 120, A take-out unit 160, a cooling unit 170 that supplies cooling water to each unit, a pressurization unit 180 that pressurizes a storage unit 123 described later of the ultrafine bubble generation unit 120, and a discharge unit 190 that discharges the beverage to the outside. .

  In the present embodiment, the beverage introduction unit 140 can introduce raw milk, and the gas introduction unit 150 can introduce carbon dioxide gas or nitrogen gas. However, the beverage introduction unit 140 may be configured to introduce other beverages, and the gas introduction unit 150 may be capable of introducing oxygen gas, nitrogen monoxide gas, ozone gas, or the like, and switches and introduces various gases. You may be able to do it.

  Further, a heat sterilizer (not shown) is provided downstream of the take-out unit 160. Therefore, the beverage taken out from the take-out unit 160 of the beverage production system 100 can be heat sterilized before distribution. For example, the heat sterilization apparatus includes a low temperature holding sterilization method (LTLT method: a method of heat sterilization at 63 ° C. for 30 minutes) and a high temperature short time sterilization method (HTST method: a method of heat sterilization for about 72 ° C. to 78 ° C. for 15 seconds), A heat sterilization treatment such as an ultra-high temperature instantaneous sterilization method (UHT method: 135 ° C. to 150 ° C.-0.5 to 15 seconds) is performed.

  Each part of the beverage production system 100 is managed by a control unit 101 that centrally manages the beverage production system 100. The control unit 101 may control the beverage manufacturing system 100 in cooperation with an external control device or the like. Moreover, each part of the beverage manufacturing system 100 may be controlled by another control device or the like.

[Uniform section]

  The homogenizer 110 is a homogenizer that is implemented as a so-called high-pressure valve type homogenizer (see, for example, JP 2010-17623 A). Therefore, the homogenizing unit 110 applies a high pressure to the introduced beverage by a so-called plunger pump, and ejects the beverage from a minute gap of a homo valve (homogeneous valve) provided in the flow path.

  At that time, the particles in the beverage are crushed and refined by colliding and shearing in the gap. Thereby, among the particles in the beverage, those having a relatively large particle size are refined and dispersed and uniformized. That is, the homogenizer 110 homogenizes the particles in the beverage by pulverizing and refining them.

  In the present embodiment, a beverage is introduced from the beverage introduction unit 140 and a gas is introduced from the gas introduction unit 150 into the uniformizing unit 110. In this embodiment, milk (raw milk) is introduced as a beverage, and carbon dioxide gas or nitrogen gas is introduced as a gas. The beverage and gas are introduced into the high-pressure application unit 111 via a gas-liquid mixer (not shown) and pass through the refinement unit 119, whereby the particles or bubbles in the beverage are refined.

  FIG. 2 is a schematic cross-sectional side view showing the high-pressure application unit 111 of the high-pressure valve homogenizer that functions as the homogenizing unit 110 of the beverage production system 100. As will be described later, the high-pressure application unit 111 can apply high pressure to the beverage by moving the plunger 112 back and forth within the cylinder block 113.

  The high-pressure application unit 111 includes an introduction path 114 through which a beverage mixed with gas is introduced, a discharge valve 115 connected to the introduction path 114, a pressurization space 116 provided downstream of the discharge valve 115, and pressurization A plunger 112 that can reciprocate in the space 116 and reciprocates, a suction valve 117 provided downstream of the pressurizing space 116, and a lead-out path 118 connected to the suction valve 117 are provided.

  In the present embodiment, the introduction path 114 introduces the beverage from the paper back direction. In addition, the outlet path 118 guides the beverage in the paper direction. Further, the discharge valve 115 and the suction valve 117 function as a check valve that allows only the flow from the introduction path 114 to the lead-out path 118 (flow from the lower side to the upper side in FIG. 2). The plunger 112 is coupled to a drive mechanism (not shown) that drives the inside of the pressurizing space 116 provided in the cylinder block 113 so as to be able to reciprocate (in the direction of the arrow in FIG. 2). The drive mechanism includes a cam and a motor.

  With the beverage being introduced from the introduction path 114 into the pressurized space 116 via the discharge valve 115, the plunger 112 moves forward in the pressurized space 116 to pressurize the pressurized space 116. The pressurized beverage is led out through the suction valve 117 to the lead-out path 118 under a high pressure. At this time, the discharge valve 115 does not return the pressurized beverage to the introduction path 114 by the function of the check valve.

  On the other hand, when the plunger 112 moves backward from the pressurizing space 116, the pressurizing space 116 is depressurized. Thereby, the beverage is again introduced from the introduction path 114 via the discharge valve 115. At this time, the suction valve 117 does not return the beverage derived by the check valve function to the pressurized space 116. Thereby, the high voltage | pressure application part 111 can supply the drink which the high voltage | pressure acted on. In this embodiment, a high pressure of 10 MPa to 70 MPa is applied to the beverage.

  Furthermore, the plunger 112 is designed such that its front end surface abuts against the inner surface of the pressurizing space 116 when moving forward, and further, a fine protrusion is provided on the front end surface of the plunger 112 (not shown). By doing so, a fine space is formed when the tip surface of the plunger 112 hits the inner surface of the accommodation space, and particles and bubbles are refined in the space.

  FIG. 3 is a schematic sectional side view showing the miniaturization part 119 of the high-pressure valve homogenizer that functions as the homogenization part 110 of the beverage production system 100. In the homogenizing unit 110, the beverage derived from the outlet path 118 of the high pressure applying unit 111 is supplied to the micronizing unit 119 in a state where the high pressure is applied (in the direction of the arrow in FIG. 3).

  In addition, the pressure of the drink supplied to the refinement | miniaturization part 119 can also be kept constant by connecting the several high voltage | pressure application part 111 in parallel, and adjusting the timing of the reciprocating motion of the plunger 112. FIG. In addition, although the refinement | miniaturization part is a valve | bulb type, as long as the particle | grains and air bubbles in a drink can be refined | miniaturized, another structure may be sufficient.

  In the micronization unit 119, the beverage supplied in a state where high pressure is applied passes through the homogeneous valve 119a. The homogeneous valve 119 is provided with a fine gap 119b, and when passing through this fine gap, particles and bubbles collide and are sheared to become fine and uniform. By adjusting this gap, particles and bubbles can be adjusted to a desired particle size. In general, particles and bubbles that have passed through a homogeneous valve are refined to a size of about 1 μm. However, the bubbles may be refined to a micro order of several μm to several tens of μm.

  In the present embodiment, the homogenizing unit 110 is a high-pressure valve type homogenizer including a high-pressure applying unit 111 and a micronizing unit 119. However, if the particles in the beverage can be miniaturized and homogenized, the homogenizing unit 110 has another configuration. Also good. For example, other methods such as an ultrasonic method and an agitation method may be used, and not only a valve type but also other types such as a nozzle type may be used. The equalizing unit 110 according to the present embodiment applies a pressure of about 50 MPa to the beverage. The homogenizer 110 may be a single unitary device or may be separated and constructed from several separate elements.

[Ultra fine bubble generator]

  Referring to FIG. 1 again, the ultrafine bubble generating unit 120 is introduced with a bubble-containing beverage containing refined bubbles from the homogenizing unit 110, and converts the fine bubbles into ultrafine bubbles having a smaller particle size. Store.

  The ultrafine bubble generating unit 120 mainly generates bubbles in the beverage and produces a bubble-containing beverage, and a bubble collapse that collapses the bubbles in the bubble-containing beverage supplied from the bubble generating unit 121. Part 122 and the storage part 123 which stores the bubble containing drink supplied from the bubble crushing part 122 are provided. The bubble generation unit 121, the bubble crushing unit 122, and the storage unit 123 are connected to each other and form a first circulation path 103 (loop) for circulating the bubble-containing beverage.

  As will be described later, the ultrafine bubble generation unit 120 introduces gas into the beverage from the gas introduction unit 150, generates fine bubbles in the bubble generation unit 121, and is supplied from the homogenization unit 110 via the storage unit 123. The fine bubbles of the bubble-containing beverage are further refined. Thereby, a bubble-containing beverage containing fine bubbles that are sufficiently refined is supplied to the bubble crushing portion 122. Since the bubble crushing part 122 is supplied with a bubble-containing beverage containing sufficiently refined bubbles, it is possible to efficiently generate ultrafine bubbles having a smaller particle size.

  The bubble generation unit 121 is supplied with a gas-liquid mixer 124 that mixes beverage and gas, a bubble-containing beverage in which gas is mixed by the gas-liquid mixer 124, and generates a bubble generator 125 that generates fine bubbles. And a pump 126 for supplying the bubble-containing beverage from the liquid mixer 124 to the bubble generator 125 (see, for example, JP-A-2015-188671).

  The gas-liquid mixer 124 is provided on the upstream side of the pump 126, is connected to a storage unit 123 described later, and is connected to the gas introduction unit 150 via a check valve (not shown). The gas-liquid mixer 124 is incorporated in the circulation path 103 and supplied with the beverage once supplied from the homogenizing unit 110 to the storage unit 123 or the bubble-containing beverage stored in the storage unit 123. In the gas-liquid mixer 124, gas is sucked simultaneously with the beverage using the suction force of the pump 126, and the gas is bubbled and contained in the beverage. Therefore, in the bubble generation unit 121, a beverage containing bubbles is supplied from the pump 126 to the bubble generator 125.

  FIG. 4 is a schematic cross-sectional view of the bubble generator 125 of the ultrafine bubble generation unit 120. The bubble generator 125 includes a swirling crushing unit 1251 that crushes the bubble-containing liquid supplied from the gas-liquid mixer 124 while swirling, and a livestock raising unit 1252 that retains the bubble-containing liquid containing the crushed fine bubbles for a certain period of time. A foaming unit 1253 that foams the bubble-containing liquid after being held for a certain period of time to a high concentration and a decompression unit 1254 that decompresses the bubble-containing liquid foamed to a high concentration are provided.

  The swirling crushing portion 1251 includes a pipe 1251a, a shaft-like member 1251b that is inserted into and fixed to the pipe 1251a, and first and second flange-like members 1251c and 1251d that are fixedly attached to the shaft-like member 1251b. Prepare. The pipe 1251a has a cylindrical storage space, and the shaft-shaped member 1251b is attached and fixed to one side of the pipe 1251a via a disk member 1251e, and extends in the extending direction of the pipe 1251a in the center of the storage space. .

  The first bowl-shaped member 1251c is formed in a disk shape having substantially the same diameter as the cross section of the pipe 1251a, and the second bowl-shaped member 1251d is formed in a disk shape having a smaller diameter than the first bowl-shaped member 1251c. ing. The first bowl-shaped member 1251c and the disk member 1251e are formed with through holes 1251f through which the bubble-containing liquid passes.

  The swirling crushing portion 1251 receives the bubble-containing liquid from the gas-liquid mixer 124 (arrow f1), accelerates and stirs the bubble-containing liquid while swirling inside (arrows f2 and f3), and guides it to the breeding unit 1252. (Arrow f4). At this time, in the through hole 1251f of the first bowl-shaped member 1251c, the bubble is sheared and collapsed, and the bubble-containing liquid is pressurized on the upstream side and depressurized on the downstream side (arrow f3).

  Thereby, the bubble density | concentration of a bubble containing liquid improves. In addition, the bubble-containing liquid swirls on the side periphery of the second bowl-shaped member 1251d and is agitated to mix the gas and the liquid (arrow f2). In this manner, the swirling crushing portion 1251 functions as a well-known static mixer type microbubble generator.

  The livestock raising part 1252 is formed from a tubular member into which a part of the swirling crushing part 1251 is inserted, and a bubble-containing liquid whose bubble concentration is improved by passing through the swirling crushing part 1251 is introduced (arrow f4) and stays for a certain period of time. After that, the bubble-containing liquid is led out to the foaming portion 1253 (arrow f5). Thereby, the amount of charges held in the bubble-containing liquid and the zeta potential can be made uniform. Therefore, in the livestock breeding part 1252, the particle diameters of the bubbles of the bubble-containing liquid can be made uniform.

  Moreover, the livestock raising part 1252 is connected to the livestock raising pressurizer (not shown), and can pressurize the inside of the livestock raising part 1252 to a predetermined pressure. Thereby, it has the function which improves a bubble density | concentration by utilizing the pressurization compression effect by surplus gas, and raising the pressure in the breeding part 1252 to a fixed pressure. In FIG. 2, the drain pipe 1256 is shown in the animal breeding unit 1252, but it is normally closed, and when the apparatus is stopped, the residual liquid in the pipe is discharged or used for steam sterilization or the like.

  The foaming portion 1253 includes three pipes, and is formed with a cylindrical passage portion 1253a and a truncated conical passage portion 1253b having a diameter that increases toward the downstream. A slit plate 1253d having a slit hole 1253c at the center is provided at the boundary between the pipes. The bubble-containing liquid is introduced from the animal breeding unit 1252 to the foaming unit 1253 (arrow f5), passes through the slit hole 1253c formed in the center of the upstream slit plate 1253d (arrow f6), and further downstream the slit plate 1253d. Passes through a cylindrical passage portion 1253a through a slit hole 1253c formed at the center of the tube. By passing through the two slit holes 1253c, the bubble-containing liquid is re-pressurized while generating turbulent flow in the cylindrical passage portion in the second pipe from the upstream side (f7).

  Further, the repressurized bubble-containing liquid flows into the frustoconical passage portion 1253b and flows so as to diffuse along the taper of the frustoconical passage portion (arrow f8). The concentration of the bubble-containing liquid is improved.

  The decompression unit 1254 is formed of a tubular member, and includes a frustoconical diffusion space 1254a, a columnar staying space 1254b, and a columnar outlet space 1254c. The bubble-containing liquid diffuses and flows in the diffusion space 1254a (arrow f9) and is foamed by being depressurized to be highly concentrated.

  Further, the bubble-containing liquid is temporarily retained in the retention space 1254b, and the amount of charges held in the bubbles and the zeta potential in the bubble-containing liquid are made uniform. Thereby, the particle size of the bubble of a bubble containing liquid can be arrange | equalized. And it is derived | led-out from the bubble generator 125 through the derivation | leading-out space 1254c (arrow f10).

  In the bubble generation unit 121, the bubble-containing liquid supplied from the gas-liquid mixer 124 passes through the swirling crushing unit 1251, the breeding unit 1252, the foaming unit 1253, and the decompression unit 1254 of the bubble generator 125. To generate a first bubble. Thereby, the bubble production | generation part 121 can supply the 1st bubble containing liquid containing a 1st bubble to the bubble crushing part 122. FIG.

  The bubble production | generation part 121 of the beverage manufacturing system 100 which concerns on this Embodiment has the function of turning crushing, animal husbandry, foaming (pressurization pressure reduction), and pressure reduction, and is the air-type bellows pump which is a pump of a low lift capacity, or the same A diaphragm pump can produce fine, uniform, high-concentration microbubbles, and a magnetic pump or an axial pump can further improve the concentration. For this reason, the bubble generating apparatus which does not choose the kind of pump 126 is attained by these functions.

  Further, the piping and the tubular member of the bubble generator 125 are made of stainless steel, and each joint portion adopts a ferrule structure and is fixed with a sanitary clamp (not shown). Thereby, the bubble generator 125 is easy to assemble, ensures sanitary properties, and enables stationary sterilization (SIP: Sterilization in Place) such as steam sterilization. Therefore, even when a beverage or the like is used as the liquid constituting the bubble-containing liquid, it exhibits a hygienic superior function.

  The bubble generation unit 121 may have another configuration as long as the first bubble to be crushed by the bubble crushing unit 122 can be generated. For example, a well-known swirling flow type bubble generating device (see Japanese Patent Application Laid-Open No. 2006-117365), a pressure shearing type bubble generating device (see Japanese Patent Application Laid-Open No. 2006-272232), and the like are used. Can be used as However, in order to supply bubbles having a uniform particle size to the bubble crushing section 122, it is desirable to use the bubble generator 125 according to the present embodiment.

  5A and 5B are schematic views of the bubble crushing portion 122 of the ultrafine bubble generating unit 120, FIG. 5A is a side view of the bubble crushing portion 122, and FIG. 5B is a front view of the bubble crushing portion 122. The bubble crushing unit 122 includes a passage 122a that is connected to the bubble generator 125 of the bubble generation unit 121 and allows the bubble-containing beverage produced by the bubble generation unit 121 to pass through, and an exterior body 122b that covers the periphery of the passage 122a. A two-layer structure having an intermediate space 122c is formed from the passage 122a and the exterior body 122b. The bubble crushing part 122 is arranged so that the passage 122a extends in the horizontal direction.

  The exterior body 122b is provided with a plurality of ultrasonic transducers 122d, and each ultrasonic transducer 122d irradiates ultrasonic waves toward the passage 122a. The intermediate space 122c between the passage 122a and the exterior body 122b is filled with the propagation liquid, and the ultrasonic wave irradiated from the ultrasonic vibrator 122d is propagated into the passage 122a through the propagation liquid, Ultrasonically crush bubbles in a bubble-containing beverage flowing inside.

  The propagation liquid is cooling water supplied from the cooling unit 170, introduced into the intermediate space 122c from the propagation liquid inlet 122h provided in the exterior body 122b, and led out from the propagation liquid outlet 122i. The bubble crushing part 122 heats the bubble-containing beverage that passes by the ultrasonic wave irradiation of the ultrasonic vibrator. However, the propagation liquid also has an action of cooling the bubble crushing part 122, and the temperature of the bubble-containing beverage passing through the bubble crushing part can be adjusted by the flow rate of the cooling liquid.

  The passage 122a is formed of a pipe made of a fluororesin pipe such as PFA (polytetrafluoroethylene / perfluoroalkyl vinyl ether copolymer) or a PVC (polyvinyl chloride) pipe. Thus, the passage 122a has a circular cross section and extends in a cylindrical shape with the same diameter, thereby forming a uniform flow path. The passage 122a is connected so as to be interposed between the bubble generation unit 121 and the storage unit 123, and the bubble-containing beverage supplied from the bubble generation unit 121 flows to the storage unit 123 in a state of being filled inside the passage 122a. .

  The exterior body 122b is made of stainless steel and includes a side circumferential member 122e extending in a hexagonal column shape having a regular hexagonal cross section, and a pair of disk-shaped planar members 122f sandwiching the side circumferential member 122e from both sides in the extending direction. . Both planar members 122f are fitted with a passage 122a at the center, and the passage 122a is fixed so that the passage 122a extends on the hexagonal central axis of the side circumferential member 122e. Thus, an intermediate space 122c is formed on the outer side of the passage 122a and the side peripheral member 122e of the exterior body 122b, and the outer periphery of the passage 122a and each surface of the hexagonal side peripheral member 122e form a similar intermediate space. doing.

  The exterior body 122b has an ultrasonic transducer 122d attached to each surface of the hexagonal column. The ultrasonic transducers 122d are provided in two stages in the extending direction of the passage 122a, the bubble generation unit 121 side is the preceding ultrasonic transducer group, and the storage unit 123 side is the subsequent ultrasonic transducer group. It is said. The ultrasonic transducer group at each stage includes six ultrasonic transducers 122d provided radially from the central axis of the passage 122a.

  The two ultrasonic transducers 122d facing each other form a pair of oscillator pairs, and the six ultrasonic transducers 122d form three pairs of oscillators. Each ultrasonic transducer can be adjusted in frequency and output by the control unit 101. In the present embodiment, the 12 ultrasonic transducers 122d irradiate ultrasonic waves with the same frequency and the same output, respectively.

  Each of these six ultrasonic transducers 122d irradiates ultrasonic waves toward one point in the center of the passage 122a. Accordingly, each ultrasonic transducer 122d emits ultrasonic waves from different positions in different radial directions and radially inward toward the center of the passage.

  Thereby, it is suppressed that the bubble containing drink which flows through the channel | path 122a is inhibited from flowing by an ultrasonic wave. In particular, each of the pair of oscillators oscillates an ultrasonic wave from the facing position toward the facing direction. Thereby, an ultrasonic crushing field is formed from the center of the passage 122a, the bubble-containing beverage passing through the passage 122a is crushed, and ultrafine bubbles having a uniform particle size are generated.

  In the bubble crushing part 122, ultrasonic waves are irradiated from a plurality of directions, and an ultrasonic crushing field is formed at a place where the ultrasonic waves are concentrated. Therefore, in this embodiment, each ultrasonic transducer group forms an ultrasonic collapse field in the passage 122a. Even if all of the fine bubbles are not crushed in the ultrasonic crushing field formed by the ultrasonic transducer group at the front stage, the ultrasonic crushing field formed by the ultrasonic transducer group at the rear stage crushes the remaining fine bubbles. Therefore, in the bubble crushing part 122 according to the present embodiment, the fine bubbles can be reliably crushed and uniform ultrafine bubbles can be generated. In this embodiment, the bubble crushing part 122 produces | generates what is called an ultra fine bubble as an ultrafine bubble.

  In this embodiment, the passage 122a of the bubble crushing portion 122 is formed from a pipe made of a fluororesin pipe such as PFA (polytetrafluoroethylene / perfluoroalkyl vinyl ether copolymer) or a PVC (polyvinyl chloride) pipe. However, another resin may be used as a material, or a metal having no problem in terms of hygiene may be used as a material. Further, the bubble crushing portion 122 has a two-layer structure including the passage 122a and the exterior body 122b, but may have other configurations as long as the bubbles can be crushed by irradiation with ultrasonic waves. For example, a cylindrical member having a single-layer structure is formed of a metal such as stainless steel that does not have a sanitary problem even when a beverage is allowed to pass, and an ultrasonic vibrator is disposed directly around the cylindrical member. The beverage may be allowed to pass through the inside of the member.

  The bubble crushing part 122 according to the embodiment of the present invention forms an ultrasonic crushing field, and crushes the fine bubbles in the beverage and converts them into ultrafine bubbles. The ultrasonic crushing field is formed by continuously irradiating ultrasonic waves, and ultraviolet rays are generated in the ultrasonic crushing field. Thereby, the drink which passes an ultrasonic crushing field can acquire the bactericidal effect by an ultraviolet-ray.

  Furthermore, in the bubble crushing part 122, countless vacuum bubbles are generated by cavitation in the liquid by irradiating the beverage with ultrasonic waves forming an ultrasonic crushing field. When this vacuum bubble collapses by repeated compression and expansion, an ultrahigh temperature and high pressure reaction field is formed. In this reaction field, the bactericidal effect of sterilizing general living bacteria, Legionella bacteria, Escherichia coli and the like can be obtained by breaking the cell walls of the bacteria by rupturing the vacuum bubbles.

  6A and 6B are schematic views of the storage unit 123 of the ultrafine bubble generating unit 120, FIG. 6A is a plan view of the storage unit 123, FIG. 6B is a front view of the storage unit 123, and FIG. The side view of the storage part 123 is shown, (D) shows the bottom view of the storage part 123.

  As shown in FIG. 6, the storage unit 123 mainly includes a cylindrical tank container 123a and an exterior container 123b that covers the tank container 123a. The tank container 123a forms a storage space 123c having a predetermined volume for storing the bubble-containing beverage. A cooling space 123d to which cooling water is supplied from the cooling unit 170 is formed between the tank container 123a and the outer container 123b.

  The reservoir 123 further includes a stock solution inlet 123e connected to the homogenizer 110, a bubble-containing beverage inlet 123f connected to the bubble crushing part 122, a recursive outlet 123g connected to the circulation path 103, A bubble-containing beverage outlet 123h connected to the take-out unit 160, a discharge port 123i connected to the discharge unit 190, a pressurization port 123j connected to the pressurization unit 180, and a decompression port 123k for air release. These are provided in the tank container 123a.

  The recursion outlet 123g is connected to the circulation path 103 and also to the deaeration unit 130 via a switching valve (not shown). The stock solution inlet 123e is connected to the homogenizing unit 110 and also to the deaeration unit 130 via a switching valve (not shown). The control unit 101 can control the flow of the beverage by controlling the switching valve. Accordingly, the beverage can be switched between the circulation route 103 and the circulation route 105.

  The stock solution inlet 123e is mainly composed of a cylindrical pipe, communicates from the upper surface of the tank container 123a to the inside of the tank container 123a, and supplies the stock solution from the beverage introduction 140 to the top surface position of the tank container 123a. Thereby, the stock solution is supplied from the top of the storage space 123c. The pressurizing port 123j is mainly composed of a cylindrical pipe, communicates from the upper surface of the tank container 123a to the inside of the tank container 123a, and is supplied with gas at a high pressure from a pressurizing unit 180 such as a compressor. The inside of the storage space 123c of 123a is pressurized.

  The bubble-containing beverage introduction port 123f is mainly composed of a cylindrical pipe, extends from the upper surface of the tank container 123a to a half height position from the bottom surface in the tank container 123a, and from above the tank container 123a. Supply bubble-containing beverages. Bubble-containing beverages tend to diffuse downward as bubbles with smaller particle sizes.

  Therefore, in this embodiment, the bottom of the tank container 123a is formed with an NB region having a nano-order particle size, where the presence of so-called ultra fine bubbles is dominant, and on the upper side, ultra fine bubbles and fine bubbles are formed. Is formed, and an MB region in which fine bubbles are dominant is formed above the MN region. In each region, the position in the tank container 123a varies depending on the amount of liquid stored and the operation status of the apparatus.

  The pipe of the bubble-containing beverage introduction port 123f is bent into an L shape and discharges the bubble-containing beverage in the horizontal direction. Thereby, a bubble containing drink receives a discharge pressure in a horizontal direction, and is stirred in the storage space 123c. However, since the bubble-containing beverage does not receive the discharge pressure in the vertical direction, it does not prevent the bubbles having a small particle size from increasing in concentration below the storage space.

  The recursive outlet 123g is mainly composed of a cylindrical pipe, extends from the bottom of the tank container 123a to a height of 1/4 from the bottom of the tank container 123a, and is 1/4 from the bottom of the tank container 123a. The bubble-containing beverage at the height position is led to the circulation path 103, and the bubble-containing beverage is recursed to the bubble generation unit 121.

  The pipe of the recursion outlet 123g is bent in an L shape and sucks the bubble-containing beverage in the horizontal direction. Thereby, the bubble-containing beverage receives suction pressure in the horizontal direction and is stirred in the storage space 123c. However, since the bubble-containing beverage does not receive the suction pressure in the vertical direction, it does not prevent the bubbles having a small particle size from being highly concentrated below the storage space.

  The bubble-containing beverage outlet 123h is mainly composed of a cylindrical pipe, communicates from the bottom of the tank container 123a to the lower surface of the tank container 123a, and takes out the bubble-containing beverage from the bottom of the tank container 123a. The bubble-containing beverage outlet 123h is connected to the take-out unit 160 via a pressure reducing valve (not shown).

  Thereby, since the bubble-containing drink pressurized in the storage space 123c is derived | led-out via the pressure reduction valve to the extraction part 160, it is possible to take out the highly concentrated bubble-containing drink. The take-out unit 160 functions as a bubble-containing beverage derivation unit. As the pressure reducing valve, a well-known direct acting pressure reducing valve, a pilot operated pressure reducing valve, or the like can be used.

  The discharge port 123i mainly consists of a cylindrical pipe, extends from the bottom surface in the tank container 123a to the lower stage outside the tank container 123a, and discharges the bubble-containing beverage from the bottom of the tank container 123a.

  Furthermore, the storage unit 123 is provided with a plurality of water level sensors, and the control unit 101 can manage the storage amount of the bubble-containing beverage in the storage unit 123. Further, the storage unit 123 is provided with a pressure transmitter (not shown) for measuring pressure. The pressure transmitter is provided in the tank container 123a, is electrically connected to the control unit 101, and can measure the pressure in the storage space 123c.

  The decompression port 123k can communicate with the atmosphere via a vent filter (not shown). The vent filter is electrically connected to the control unit 101, and enables pressure adjustment in the storage space 123c while securing a ventilation path from the storage space 123c.

  In the present embodiment, the tank container 123a is made of a stainless material such as SUS316L or SUS304. However, the tank container 123a is made of other metals such as stainless steel, resin such as PVC (polyvinyl chloride), PP (polypropylene), PVDF (polyvinylidene fluoride), PTFE (polytetrafluoroethylene), quartz, or the like. It is good.

  In the case of a resin material, the tank container 123a has a completely sealed structure at the top by resin welding or adhesion, and a flange structure may be adopted in a metal material or a resin material. When quartz is used as a material, a sealed structure may be provided via a sealing material such as PTFE or Viton.

  Since the storage unit 123 has a sealed structure, the storage space 123c is isolated from the atmosphere, and the storage space 123c can be pressurized by the pressurization unit 180. Further, the pressure of the pressurized storage space 123c can be adjusted by the vent filter. The control unit 101 measures the pressure in the storage space 123c with a pressure transmitter, and the pressure in the storage space 123c is adjusted to a predetermined value by the pressurization unit 180 and the vent filter.

  In the present embodiment, the pressurizing unit 180 can pressurize the storage space 123c to about 0.6 MPa. Furthermore, the control part 101 can manage the quantity of the cooling water supplied to the cooling space 123d from the cooling part 170, and can adjust the temperature of the bubble containing drink stored by the storage space 123c.

  As for the ultrafine bubble production | generation part 120 which concerns on this embodiment, the bubble containing drink supply part comprised from the bubble crushing part 122 and the bubble production | generation part 121, and the storage part 123 are isolate | separated. Accordingly, the bubble-containing beverage supply unit continuously supplies a certain amount of bubble-containing beverage having a uniform particle size without being affected by the capacity of the storage unit 123, and the bubble-containing beverage is stored in the storage unit 123. In the storage unit 123, bubbles are prevented from aggregating.

[Deaeration part]

  FIG. 7 is a schematic view of a deaeration device constituting the deaeration unit 130, (A) is a partial cross-sectional schematic view of an inducer-type deaeration device 130A, and (B) is a diagram of the deaeration device 130A. FIG. 6 is a partial cross-sectional schematic view showing another inducer-type deaerator 130B that is a modified example. The deaeration unit 130 is incorporated in the circulation path 105, and after the beverage is introduced from the storage unit 123 and deaerated, the storage unit 123 is recirculated again. That is, the deaeration unit 130 is incorporated and connected in the circulation path 105 that circulates the beverage stored in the storage unit 123.

  The deaerator 130A includes a casing 131A that forms a substantially cylindrical space, a rotary shaft member 132A that extends in the axial direction at the center of the space of the casing 131A, a separation impeller 133A that is provided on the rotary shaft member, an inducer 134A and main impeller 135A. The casing 131A includes an inflow path 136A through which liquid flows into the casing 131A, an outflow path 137A through which liquid flows out from the casing 131A, and a discharge path 138A through which gas is discharged from the casing 131A. The rotating shaft member 132A is connected to the motor 139 and is rotatable.

  The deaerator 130A is incorporated in and connected to the circulation path 105, the inflow path 136A is connected to the recursive outlet 123g of the storage section 123, and the outflow path 137A is connected to the stock solution inlet 123e of the storage section 123. Yes. Further, the discharge path 138A is connected to a vacuum pump (not shown). The separation impeller 133A, the inducer 134A, and the main impeller 135A are each formed by providing a predetermined number of blade members having a predetermined shape attached to the rotation shaft member 132A, and the rotation shaft member 132A is rotated. By doing so, it functions as an impeller that separates the liquid and the airframe by centrifugal force.

  In the deaeration process to be described later, the beverage stored in the storage unit 123 first flows into the inflow path 136A of the deaerator 130A through the circulation path 105 while the rotating shaft member 132A is rotated. Here, the inflow path 136A has a squeezed structure, and is opened after the inflow beverage is squeezed once. As a result, the beverage that has flowed into the casing 131A is decompressed, and the gas dissolved in the beverage is deposited by the decompression action, and is introduced into the inducer 134A as a gas-liquid mixture.

  The gas-liquid mixture guided to the inducer 134A is a function of the impeller of the inducer 134A by the rotation of the rotary shaft member 132A, and the liquid component is pressed to the outer peripheral side in the casing 131A, while the gas component is It is accumulated on the central side (rotating shaft member 132A side) in 131A and separated into a liquid component and a gas component. Furthermore, since the pressure inside the casing 131A is reduced by the above-described vacuum pump, the gas remaining in the liquid is deposited and separated as bubbles at the boundary between the liquid and the gas.

  The liquid from which the gas component has been separated is guided to the main impeller 135A, and receives a further outward force by the rotation of the main impeller 135A, thereby forming a flow path toward the outflow passage 137A provided outside the casing 131A. To do. On the other hand, the gas separated from the liquid forms a flow path toward the discharge path 138A by suction of the vacuum pump.

  At this time, a part of the liquid is drawn to the vacuum pump side by the suction force of the vacuum pump, but is retreated to the outside of the casing 131A by the function of the impeller of the separation impeller 133A. The retracted liquid is guided again toward the inducer 134A through the outside of the casing 131A.

  Thus, in the deaeration device 130A, the beverage that has flowed in from the inflow path 136A is separated into the liquid component and the gas component, the gas is discharged from the discharge path 138A, and the beverage from which the gas component has been separated is taken out from the outflow path 137A. . Thereby, 130 A of deaeration apparatuses can deaerate a drink.

  Note that a deaerator 130B illustrated in FIG. 7B is a modification of the deaerator 130A. Similar to the deaerator 130A, the deaerator 130B includes a casing 131B provided with an inflow path 136B, an outflow path 137B, and a discharge path 138B. The deaeration device 130B includes a rotating shaft member 132B and an impeller 133B provided on the rotating shaft member 132B in the casing 131B.

  The impeller 133B differs from the impeller of the deaerator 130A in shape and the like, and unlike the deaerator 130A, the impeller is not clearly divided like a separation impeller, an inducer, and a main impeller. However, the impeller 133B can separate liquid and gas by the centrifugal separation function of the impeller 133B by the rotation of the rotating shaft member 132. Thereby, the deaeration apparatus 130B can deaerate a drink similarly to the deaeration apparatus 130A.

  The deaeration unit 130, like the deaeration device 130 </ b> A or the deaeration device 130 </ b> B, can separate gas and beverage by centrifugal force of an impeller attached to a rotating shaft member that rotates in the casing. This is a Deuceer type gas-liquid separation device (a deaeration device) (see, for example, JP 2004/058380 A). Such an impeller-type deaerator can be continuously degassed, so that batch processing like a deaerator by heating or decompression is unnecessary. Further, the problem due to the pressure environment is solved as in other centrifugal separation devices.

  Therefore, like the ultrafine bubble generating unit 120 according to the present embodiment, it is suitable for cooperation with an apparatus capable of adjusting the pressure of a beverage and requiring continuous processing. However, the deaeration unit 130 may be another device such as another pressurization device, a decompression device, or a centrifugal separation device as long as it can degas the gas contained in the beverage, particularly dissolved oxygen. A deaeration device functions as a deaeration part which deaerates the gas and bubbles which dissolve in a beverage. Moreover, the deaeration part 130 acts also as a defoaming part.

  In the beverage production system 100 according to the first embodiment, the beverage introduction unit 140 is connected to the storage unit 123 via the uniformizing unit 110. The gas introduction unit 150 is connected to the homogenization unit 110 and the bubble generation unit 121. The storage unit 123 is incorporated in the circulation path 103 and connected to the bubble generation unit 121, the bubble generation unit 121 is connected to the bubble collapse unit 122, and the bubble collapse unit 122 is connected to the storage unit 123. That is, the circulation path 103 is formed so that the beverage introduced from the beverage introduction unit 140 is introduced into the storage unit 123 and recursed again to the storage unit 123 via the bubble generation unit 121 and the bubble crushing unit 122. Yes.

[Second Embodiment]

  A beverage production system 200 according to a second embodiment of the present invention will be described with reference to FIG. FIG. 8 shows a functional block diagram of the beverage manufacturing system 200. The beverage production system 200 according to the second embodiment mainly includes a homogenizing unit 210 that homogenizes beverages, a bubble generation unit 221 that produces bubble-containing beverages, and a bubble crushing unit that collapses bubbles of bubble-containing beverages. 222, the storage part 223 which stores a bubble containing drink, and the deaeration part 230 which deaerates a drink. The bubble generation unit 221, the bubble crushing unit 222, and the storage unit 223 constitute an ultrafine bubble generation unit.

  Here, the ultrafine bubble generation unit is an apparatus in which the bubble generation unit 221, the bubble crushing unit 222, the storage unit 223, and the like are integrated into an apparatus, like the ultrafine bubble generation unit 120 of the first embodiment. As long as it is possible to generate ultrafine bubbles in the beverage, the bubble generation unit 221, the bubble crushing unit 222, the storage unit 223, and the like may be provided separately in the beverage manufacturing system 200 and not apparatusized. Good.

  Similarly, as long as the homogenizing unit 210 has a function of dispersing and homogenizing particles in the beverage, the homogenizing unit 210 may or may not be integrated as a device. That is, each part of the beverage production system 200 may be integrated as a device or may not be a device as long as it has a predetermined function.

  In addition, the beverage production system 200 includes a beverage introduction unit 240 that introduces a beverage into the storage unit 223, a gas introduction unit 250 that introduces gas into the bubble generation unit 221, and a takeout unit 260 that extracts the beverage from the storage unit 223 to the outside. A cooling unit 270 that supplies cooling water to each predetermined unit, a pressurizing unit 280 that pressurizes the storage unit 223, and a discharge unit 290 that discharges the beverage from the storage unit 223 to the outside.

  In the present embodiment, the beverage introduction unit 240 can introduce raw milk, and the gas introduction unit 250 can introduce carbon dioxide gas or nitrogen gas. However, other beverages and gases may be introduced. Each unit is managed by a control unit 201 that centrally manages the beverage manufacturing system 200. The control unit 201 may control the beverage production system in cooperation with an external control device.

  The beverage production system 200 according to the second embodiment is similar in configuration to each part, but has a different connection relationship between the parts, compared to the beverage production system 100 according to the first embodiment. Therefore, in the description of the present embodiment, the description of the same parts as those of the other embodiments will be omitted, and different parts will be described in detail.

  In the beverage production system 200, the beverage introduction unit 240 is connected to the storage unit 223 without going through the homogenization unit 210, and the gas introduction unit 250 is not connected to the homogenization unit 210, but only to the bubble generation unit 221. It is connected. Further, the uniformizing unit 210 is provided at the subsequent stage of the bubble crushing unit 222.

  The deaeration unit 230 is not provided with an original circulation path, is provided between the homogenization unit 210 and the storage unit 223, and is connected to the circulation path 203 that circulates the beverage stored in the storage unit 223. Has been. That is, the circulation path 203 is formed so that the beverage stored in the storage unit 223 returns to the storage unit 223 again via the bubble generation unit 221, the bubble crushing unit 222, the homogenization unit 210, and the deaeration unit 230. Has been.

  In the first and second embodiments, the beverage production system has various configurations. However, as long as at least the deaeration unit and the ultrafine bubble generation unit are included, the dissolved oxygen in the beverage can be replaced with nitrogen. In addition, the ultrafine bubble generating unit is not limited to ultrasonic crushing, and may be one that generates ultrafine bubbles by other means.

  The beverage manufactured by the beverage manufacturing system according to the embodiment of the present invention contains ultrafine bubbles. Ultrafine bubbles remain in the beverage for a long period of several months. Therefore, the beverages produced by the beverage production system according to these embodiments can retain ultrafine bubbles in the beverage, suppress bacterial growth, and obtain an antibacterial action over a long period of time.

[First embodiment]

  Next, a beverage production method S1 according to the first embodiment of the present invention will be described with reference to FIG. FIG. 9 shows a flow chart of the beverage production method S1. In the beverage production method S1, a beverage is produced using the beverage production system 100.

  The beverage production method S <b> 1 includes a beverage supply process for supplying beverages to the beverage production system 100. Specifically, a beverage stock solution is supplied to the beverage production system 100 via the beverage introduction unit 140 (S1-1). The beverage introduced into the beverage manufacturing system 100 is temporarily stored in the storage unit 123 via the uniformizing unit 110. In the uniformizing unit 110, the particles in the beverage are refined and uniformed. At this time, in the homogenization unit 110, carbon dioxide gas is introduced as bubbles from the gas introduction unit 150 together with the beverage, is refined together with the particles, and is supplied to the storage unit 123 as a bubble-containing beverage containing fine bubbles due to carbon dioxide. May be.

  Next, the beverage manufacturing method S1 includes a first degassing step of degassing the beverage. Specifically, the beverage stored in the storage unit 123 is circulated through the circulation path 105 in which the deaeration unit 130 is incorporated, and is deaerated in the deaeration unit 130 (S1-2). In this step, oxygen is mainly degassed from the beverage and the dissolved oxygen concentration of the beverage is reduced. The dissolved oxygen concentration can be adjusted by the time for circulating the circulation path.

  Next, the beverage manufacturing method S1 includes a carbon dioxide bubble generating step for generating ultrafine bubbles by carbon dioxide gas. Specifically, the beverage stored in the storage unit 123 is circulated through the circulation path 103 in which the bubble generation unit 121 and the bubble crushing unit 122 are incorporated, and ultrafine bubbles are generated (S1-3). In this step, a beverage is supplied to the bubble generating unit 121 and carbon dioxide gas is introduced from the gas introducing unit 150, whereby a bubble-containing beverage containing fine bubbles by the carbon dioxide gas is manufactured. At this time, the dissolved oxygen concentration of the beverage is reduced in the first degassing step, and the carbon dioxide gas is easily dissolved in the beverage.

  Further, in the carbon dioxide bubble generation step, the bubble-containing beverage is supplied from the bubble generation unit 121 to the bubble crushing unit 122. In the bubble crushing part 122, ultrasonic waves are applied to the beverage that passes, and the fine bubbles by the carbon dioxide gas are converted into the ultrafine bubbles, whereby a bubble-containing beverage containing the ultrafine bubbles is produced. Then, the bubble-containing beverage that has passed through the bubble crushing portion 122 returns to the storage portion 123.

  Next, the beverage production method S1 includes a second degassing step of degassing the beverage. Specifically, the bubble-containing beverage stored in the storage unit 123 is circulated through the circulation path 105 in which the deaeration unit 130 is incorporated, and deaerated in the deaeration unit 130 (S1-4). In this step, the carbon dioxide gas is mainly degassed from the beverage to reduce the carbon dioxide concentration in the beverage. The carbon dioxide concentration can be adjusted by the time for circulating the circulation path 105.

  Next, the beverage manufacturing method S1 includes a nitrogen bubble generating step for generating ultrafine bubbles by nitrogen gas. Specifically, the beverage deaerated and stored in the storage unit 123 is circulated through the circulation path 103 including the bubble generation unit 121 and the bubble crushing unit 122, and ultrafine bubbles are generated (S1-5). ).

  In this step, a beverage is supplied to the bubble generation unit 121 and nitrogen gas is introduced from the gas introduction unit 150, so that a bubble-containing beverage containing fine bubbles by the nitrogen gas is manufactured. At this time, the carbon dioxide concentration of the beverage is reduced in the second degassing step, and the nitrogen gas is easily dissolved in the beverage.

  Further, the bubble-containing beverage is supplied from the bubble generation unit 121 to the bubble crushing unit 122. In the bubble crushing part 122, ultrasonic waves are applied to the beverage that passes, and fine bubbles by nitrogen gas are converted into ultrafine bubbles, whereby a bubble-containing beverage containing ultrafine bubbles is produced. Then, the bubble-containing beverage that has passed through the bubble crushing portion 122 returns to the storage portion 123.

  Next, the beverage manufacturing method S1 includes a storage step of storing the bubble-containing beverage. Specifically, a bubble-containing beverage that passes through the bubble collapse portion 122 and contains ultrafine bubbles is stored in the storage portion 123 (S1-6).

  Next, the beverage production method S1 includes a heat sterilization step of heating the beverage. Specifically, the bubble-containing beverage stored in the storage unit 123 is taken out from the extraction unit 160 and sterilized by a conventionally well-known heat sterilization method (S1-7). The sterilized beverage is filled in a container and distributed to the market. Note that the carbon dioxide component of the beverage is almost completely eliminated from the beverage before the heat sterilization step by the action of the deaeration unit 130 and the replacement with ultrafine bubbles by nitrogen bubbles.

  Next, a beverage production method S2 according to the second embodiment of the present invention will be described with reference to FIG. FIG. 10 shows a flowchart of the beverage production method S2. In the beverage production method S2, a beverage is produced using the beverage production system 200.

  The beverage production method S <b> 2 includes a beverage supply process for supplying beverages to the beverage production system 200. Specifically, a beverage stock solution is supplied to the beverage production system 200 via the beverage introduction unit 240 (S2-1). The beverage introduced into the beverage manufacturing system 200 is temporarily stored in the storage unit 223.

  Next, the beverage production method S2 includes a first degassing step of degassing the beverage. Specifically, the beverage stored in the storage unit 223 is circulated through the circulation path 203 in which the deaeration unit 230 is incorporated, and is deaerated by the deaeration unit 230 (S2-2). In this step, oxygen is mainly degassed from the beverage and the dissolved oxygen concentration of the beverage is reduced. The dissolved oxygen concentration can be adjusted by the time for circulating the circulation path 203. In addition, a 1st deaeration process may be performed, performing a drink supply process. At this time, the ultrafine bubble generating unit does not operate and functions only as a passage through which the beverage passes.

  Next, the beverage production method S2 includes a carbon dioxide bubble generating step for generating ultrafine bubbles by carbon dioxide gas. Specifically, the beverage stored in the storage unit 223 is circulated through the circulation path 203 including the bubble generation unit 221 and the bubble crushing unit 222, and ultrafine bubbles are generated (S2-3). In this step, a beverage is supplied to the bubble generation unit 221 and carbon dioxide gas is introduced from the gas introduction unit 250, so that a bubble-containing beverage containing fine bubbles by the carbon dioxide gas is manufactured. At this time, the dissolved oxygen concentration of the beverage is reduced in the first degassing step, and the carbon dioxide gas is easily dissolved in the beverage.

  Further, the bubble-containing beverage is supplied from the bubble generation unit 221 to the bubble crushing unit 222. In the bubble crushing part 222, ultrasonic waves are applied to the beverage that passes, and fine bubbles by carbon dioxide gas are converted into ultrafine bubbles, whereby a bubble beverage containing ultrafine bubbles is produced. Then, the bubble-containing beverage that has passed through the bubble crushing unit 222 returns to the storage unit 223. At this time, the deaeration unit 230 does not operate and functions only as a passage through which the beverage passes.

  Next, the beverage production method S2 includes a second degassing step for degassing the beverage. Specifically, the beverage stored in the storage unit 223 is circulated through the circulation path 203 in which the deaeration unit 230 is incorporated, and is degassed by the deaeration unit 230 (S2-4). In this step, the carbon dioxide gas is mainly degassed from the beverage to reduce the carbon dioxide concentration in the beverage. The carbon dioxide concentration can be adjusted by the time for circulating the circulation path 105. At this time, the ultrafine bubble generating unit does not operate and functions only as a passage through which the beverage passes.

  Next, the beverage manufacturing method S2 includes a nitrogen bubble generating step for generating ultrafine bubbles by nitrogen gas. Specifically, the beverage deaerated and stored in the storage unit 223 is circulated through the circulation path 203 in which the bubble generation unit 221 and the bubble crushing unit 222 are incorporated, and ultrafine bubbles are generated (S2-5). ).

  In this step, a beverage is supplied to the bubble generation unit 221 and nitrogen gas is introduced from the gas introduction unit 250, whereby a bubble-containing beverage containing fine bubbles by the nitrogen gas is manufactured. At this time, the carbon dioxide concentration of the beverage is reduced in the second degassing step, and the nitrogen gas is easily dissolved in the beverage.

  Further, the bubble-containing beverage is supplied from the bubble generation unit 221 to the bubble crushing unit 222. In the bubble crushing part 222, ultrasonic waves are irradiated to the beverage that passes, and fine bubbles by nitrogen gas are converted into ultrafine bubbles, whereby a bubble-containing beverage containing ultrafine bubbles is produced. Then, the bubble-containing beverage that has passed through the bubble crushing unit 222 returns to the storage unit 223. At this time, the deaeration unit 230 does not operate and functions only as a passage through which the beverage passes.

  Next, the beverage manufacturing method S2 includes a storage step of storing the bubble-containing beverage. Specifically, the bubble-containing beverage that passes through the bubble crushing part 222 and contains ultrafine bubbles is stored in the storage part 223 (S2-6).

  Next, the beverage production method S2 includes a heat sterilization step of heating the beverage. Specifically, the bubble-containing beverage stored in the storage unit 223 is taken out from the extraction unit 260 and sterilized by a conventionally well-known heat sterilization method (S2-7). The sterilized beverage is filled in a container and distributed to the market. Note that the carbon dioxide component of the beverage is almost completely eliminated from the beverage before the heat sterilization step by the action of the deaeration unit 230 and the replacement with ultrafine bubbles by nitrogen bubbles.

  In the beverage production system 200 that performs the beverage production method S2, the equalizing unit 210 is provided in the circulation path before the deaeration unit 230. Therefore, just before performing deaeration in the deaeration unit 230, the beverage can be made uniform by applying a high pressure. In the homogenizing unit 210, when the beverage is applied with a high pressure and ejected through the fine gap of the homogeneous valve, the temperature rises.

  Thereby, a high-temperature drink is supplied to the deaeration unit 230, and the homogenization process by the homogenization unit 210 also acts as a heating process. A hot beverage is easy to deaerate because the dissolved gas concentration decreases according to Henry's law. Therefore, the deaeration performance in the first or second deaeration process is improved as compared with the beverage production method S1.

  In the beverage production methods S1 and S2, nitrogen substitution is performed in the nitrogen bubble generation step before the heat sterilization step. Thereby, the dissolved oxygen in the beverage is replaced with stable nitrogen, and in the post-process, even if the beverage is sterilized by heating, a reaction that impairs the flavor such as burnt odor is suppressed.

  In said Example, drink manufacturing method S1, S2 contains a carbon dioxide bubble production | generation process and a 2nd deaeration process between a 1st deaeration process and a nitrogen bubble production | generation process. However, the beverage production method does not include the carbon dioxide bubble generation step and the second deaeration step, and the nitrogen bubble generation step may be performed immediately after the first deaeration step. Note that the deaeration process and the bubble generation process are basically not performed simultaneously.

  In the above embodiment, the first deaeration step and the second deaeration step are deaerated by allowing the beverage to pass through the deaeration unit 130 or the deaeration unit 230. However, the deaeration process may be performed by other means without allowing the beverage to pass through the deaeration part.

  For example, by supplying a desired gas such as carbon dioxide gas or nitrogen gas to the beverage stored in the storage unit 123 and pressurizing it, in the storage unit 123, the gas from before the pressurization according to Henry's law Both the desired gas and the desired gas are dissolved in the beverage and the dissolved gas concentration is increased once. Then, pressure reduction is performed and the density | concentration of the dissolved gas in a drink is reduced. Thereby, the dissolved amount of the gas at this site is lower than that before pressurization.

  Thereafter, the process of supplying the desired gas again to pressurize and increasing the dissolved gas concentration and then reducing the pressure is repeated. Thereby, the desired gas is gradually replaced with respect to the original gas, and the gas at this place is deaerated. By increasing the number of repetitions of pressurization and depressurization, the gas at the site is sufficiently degassed. Therefore, the deaeration process may include repeating a pressurization step of pressurizing while supplying a desired supply to the storage unit 123 and a depressurization step of decompressing the storage unit 123.

  In the beverage production system and the beverage production method according to the present embodiment, ultrafine bubbles by carbon dioxide gas are generated in the beverage. Here, carbon dioxide gas is known to have a sterilizing effect by combining with water, and beverages containing fine bubbles or ultrafine bubbles by carbon dioxide gas are resistant to heat-resistant bacteria that cannot be sterilized by heat sterilization. An effect of sterilization can be obtained.

  Further, in the beverage production system and the beverage production method according to the present embodiment, ultrafine bubbles by carbon dioxide gas or nitrogen gas are generated by ultrasonic irradiation. Here, when the liquid is irradiated with ultrasonic waves, bubbles called cavitation bubbles are generated, and when the bubbles collapse by repeatedly compressing and expanding, shock waves are generated to destroy the cell walls of the bacteria, and the bactericidal effect It is known that Thereby, the drink can acquire the effect which sterilizes the heat-resistant microbe which is difficult to sterilize by heat sterilization.

  Further, in the beverage production system and the beverage production method according to the present embodiment, ultrafine bubbles by carbon dioxide gas or nitrogen gas are generated by ultrasonic irradiation. Here, it is known that when the liquid is irradiated with ultrasonic waves, ultraviolet light emission is generated, and the beverage has an effect of sterilizing heat-resistant bacteria that are difficult to sterilize by heat sterilization due to the sterilization effect by ultraviolet rays.

  Moreover, in the drink manufacturing system and drink manufacturing method which concern on this embodiment, a high pressure is made to act on a drink and equalization is performed. Here, it is known that an abrupt change in pressure can obtain a sterilizing effect. Due to the sterilizing effect, the beverage has the effect of sterilizing heat-resistant bacteria that are difficult to sterilize by heat sterilization.

  As described above, according to the beverage production system and the beverage production method according to the present embodiment, heat-resistant bacteria represented by Bacillus cereus and the like can be sterilized by a sterilization effect other than heat sterilization, and the storage period of the beverage Can be greatly improved. In addition, the temperature of the beverage is increased by ultrasonic irradiation or high-pressure action, and separately, a low temperature preservation sterilization method (LTLT method: a method of heat sterilization at 63 ° C. for 30 minutes) or a high temperature short time sterilization method (pastureization) ( HTST method: 72 ° C to 78 ° C for 15 seconds by heat sterilization), ultra high temperature flash sterilization method (UHT method: 135 ° C to 150 ° C for 0.5 to 15 seconds for heat sterilization) Even if other physical sterilization effects such as sterilization by ultrasonic irradiation and sterilization by application of high pressure are combined, a sterilization effect equal to or higher than that can be obtained.

  Furthermore, the beverage manufactured by the beverage manufacturing system according to the embodiment of the present invention contains ultrafine bubbles. Ultrafine bubbles remain in the beverage for a long period of several months. Therefore, the beverages produced by the beverage production system according to these embodiments can retain ultrafine bubbles in the beverage, suppress bacterial growth, and obtain an antibacterial action over a long period of time.

  [Modification]

  Next, a storage unit 1230 that is a modified example of the storage unit 123 applied to the beverage production system 100 will be described with reference to FIGS. 11 and 12. In the description of the storage unit 1230, the description overlapping the storage unit 123 is partially omitted. FIG. 11A is a plan view of the storage portion 1230, and FIG. 11B is a cross-sectional view taken along line BB in FIG. 11A.

  As shown in FIG. 11B, the storage unit 1230 mainly includes a cylindrical tank container 1231 and an exterior container 1237 that covers the tank container 1231. The tank container 1231 forms a storage space 1239 having a predetermined volume for storing the bubble-containing liquid. In addition, a cooling space 1294 is formed between the tank container 1231 and the outer container 1237, and cooling water is supplied from the cooling unit 170 via the cooling water inlet 291, and a cooling water outlet (not shown). More cooling water is derived.

  The tank container 1231 and the exterior container 1237 are made of stainless steel, and the tank container 1231 has a sealed structure. Thereby, even if the trace gas generated at the time of ultrasonic crushing of the bubble crushing portion 122 is flowed to the storage portion 1230, it does not come into contact with the atmosphere. Furthermore, since the tank container 1231 has a sealed structure, the pressure in the storage unit 1230 can be controlled.

  The reservoir 1230 also includes a plurality of ultrasonic transducers 1224 attached to the tank container 1231 from the outside of the side peripheral surface. In the present embodiment, the storage unit 1230 includes eight ultrasonic transducers 1224 arranged at the same angle at the same angle on the side peripheral surface. Each ultrasonic transducer 1224 irradiates ultrasonic waves toward the center of the tank container 1231. The ultrasonic transducer 1224 is provided in the tank container 1231 and directly irradiates the bubble-containing liquid stored in the tank container 1231 with ultrasonic waves.

  The two ultrasonic transducers 1224 facing each other form a pair of oscillators, and the eight ultrasonic transducers 1224 form four pairs of oscillators, forming an ultrasonic collapse field in the center of the tank container 1231. Each ultrasonic transducer can be adjusted in frequency and output by the control unit 101. In the present embodiment, the four ultrasonic transducers 1224 irradiate ultrasonic waves with the same frequency and the same output, respectively.

  As shown in FIGS. 11 (A) and 11 (B), the reservoir 1230 further includes a beverage introduction port 1232 connected to the beverage introduction unit 140 and a bubble-containing liquid introduction port connected to the bubble crushing unit 122. 1233, a recursive outlet 1234 connected to the circulation path 103, a bubble-containing liquid outlet 1235 connected to the outlet 160, a outlet 1236 connected to the outlet 190, and a pressurizer 180. And a pressurizing port 1238, which are provided in the tank container 1231.

  In FIG. 11, a cleaning liquid inlet 1299 used for stationary cleaning (CIP: Cleaning In Place) is shown, but it is normally closed and used for cleaning the tank when the apparatus is stopped. The cleaning liquid inlet 1299 introduces the cleaning liquid into the tank container 1231 via the shower ball 1299a.

  The beverage introduction port 1232 is formed of a cylindrical pipe, and is bent into a dogleg shape at an angle of about 30 ° as in the case of the bubble-containing liquid introduction port 1233 described later. Has been. As a result, the stock solution is ejected in the horizontal direction while causing a discharge port (not shown) for discharging the stock solution along the side surface of the storage space 1239, and the stock solution is ejected toward the side surface. By discharging the stock solution supplied from the beverage introduction unit 140 along the side surface of the storage space 1239, the bubble-containing liquid is introduced along the side surface of the storage space 1239, and the beverage is suppressed from foaming. The

  The pressurizing port 1238 is mainly composed of a cylindrical pipe, communicates from the upper surface of the tank container 1231 to the top surface in the tank container 1231, and a desired gas such as carbon dioxide gas or nitrogen gas from the pressurizing unit 180. Is supplied into the storage space 1239 of the tank container 1231 and pressurized. The reservoir 1230 can store liquid in a state where the reservoir 1230 is pressurized by the pressurizer 180.

  The bubble-containing liquid introduction port 1233 mainly comprises a cylindrical pipe 1233a, extends from the upper surface of the tank container 1231 to a height position of 2/3 from the bottom surface in the tank container 1231, and extends from the bubble collapse part 122 to the second position. 2 bubble-containing liquid is supplied from the upper side of the tank container 1231.

  As shown in FIG. 12, the pipe 1233a of the bubble-containing liquid introduction port 1233 is bent into an angle of about 30 ° in a dogleg shape, and the tip is cut in the vertical direction. Accordingly, the bubble-containing liquid is discharged in the horizontal direction while the discharge port 1233b for discharging the bubble-containing liquid is along the side surface of the storage space 1239, and the bubble-containing liquid is discharged toward the side surface. By discharging the bubble-containing liquid along the side surface of the storage space 1239, the bubble-containing liquid is introduced along the side surface of the storage space 1239, and foaming is suppressed.

  The recursion outlet 1234 is mainly composed of a cylindrical pipe, and extends in the horizontal direction from the side of the tank container 1231 at a height of 1/3 from the bottom of the tank container 1231 and communicates with the tank container 1231. Then, the bubble-containing liquid at a height of 1/3 from the bottom of the tank container 1231 is led out to the circulation path 103, and the bubble-containing liquid is returned to the gas-liquid mixer 124.

  The pipe of the recursion outlet 1234 sucks the bubble-containing liquid in the horizontal direction. As a result, the bubble-containing liquid receives suction pressure in the horizontal direction and is stirred in the storage space 1239. However, since the bubble-containing liquid does not receive the suction pressure in the vertical direction, it does not prevent the bubbles having a small particle diameter from increasing in concentration below the storage space.

  Like the storage unit 123, the bubble-containing liquid outlet 1235 is mainly formed of a cylindrical pipe, extends from the bottom of the tank container 1231 to the outside of the tank container 1231, and takes out the bubble-containing liquid from the bottom of the tank container 1231. . The discharge port 1236 is mainly formed of a cylindrical pipe, extends from the bottom surface in the tank container 1231 to the outside of the tank container 1231, and discharges the bubble-containing liquid from the bottom of the tank container 1231.

  Since the storage unit 1230 has a sealed structure, the storage space 1239 is isolated from the atmosphere, and the storage space 1239 can be pressurized by the pressurization unit 180. In the present embodiment, the pressurizing unit 180 can pressurize the storage space 1239 to about 0.6 MPa. Further, even when the pressurizing unit 180 is not operated, the storage unit 1230 is pressurized from the atmospheric pressure by about 0.01 MPa to 0.05 MPa by the bubble-containing liquid pumped from the bubble generating unit 121.

  The storage unit 1230 further includes a pressure reducing port 1298a provided on the upper surface of the tank container, and communicates with the outside through a vent filter to secure an air passage from the storage space 1239. An open / close valve (not shown) is provided between the vent filter and the pressure reducing port 1298a, and the control unit 101 can adjust the pressure in the storage space 1239 by adjusting the opening degree of the open / close valve. The control unit 101 measures the pressure in the storage space 1239 with a pressure transmitter, and the pressure in the storage space 1239 is adjusted to a predetermined value by the pressurization unit 180 and the vent filter.

  Furthermore, the storage unit 1230 includes a stirrer K that stirs the liquid stored in the tank container 1231. The stirrer K includes a motor K1 provided above the tank container 1231, a shaft K2 connected to the motor K1, and a stirring blade K3 attached to the shaft K2. The motor K1 is connected to the control unit 101, and the driving timing is controlled.

  Here, the liquid containing fine bubbles or ultrafine bubbles has a characteristic that bubbles are easily formed as compared with a liquid not containing fine bubbles, and the characteristic becomes remarkable in a liquid having a colloidal component such as milk. Therefore, when the bubble-containing liquid is bubbled during introduction and storage of the bubble-containing liquid into the storage unit 1230, the bubble concentration is lowered and it is difficult to take out stably.

  In the storage unit 1230 according to this modification, the discharge port 1233b of the bubble-containing liquid introduction port 1233 is formed along the side surface of the storage space 1239, and the bubble-containing liquid introduction port 1233 supplies the bubble-containing liquid in the horizontal direction in the tank container 1231. Discharge towards the side of the. Thereby, bubble-containing liquid can be stored by suppressing foaming by being introduced into the storage space 1239 along the side peripheral surface of the storage tank 211.

  Although the beverage production system has various configurations, it suffices to have at least a uniformizing unit and an ultrafine bubble generating unit. In addition, the ultrafine bubble generating unit is not limited to ultrasonic crushing, and may be one that generates ultrafine bubbles by other means.

  In the beverage production system according to the above-described embodiment, the beverage is heated at the bubble collapse portion or the uniformizing portion and cooled at the storage portion. Therefore, for example, the beverage can be instantaneously heated to a high temperature of about 75 ° C. and rapidly cooled to around 0 ° C. Therefore, according to the beverage manufacturing system which concerns on these embodiment, a drink can also be sterilized using the temperature change of heating and cooling.

  Moreover, in said embodiment, carbon dioxide gas is produced | generated in a drink, ie, raw milk. Here, carbon dioxide is combined with water to produce hydrogen carbonate ions having a bactericidal effect. Thereby, in addition to the antibacterial effect of ultrafine bubbles, the beverage can obtain a bactericidal effect by the combination of carbon dioxide and water. The carbon dioxide component is almost completely excluded from the liquid component before being taken out by the action of the degassing part and the replacement with the ultrafine bubbles by nitrogen bubbles.

  The beverage manufactured by the beverage manufacturing system according to the embodiment of the present invention contains ultrafine bubbles. Ultrafine bubbles remain in the beverage for a long period of several months. Therefore, the beverages produced by the beverage production system according to these embodiments can retain ultrafine bubbles in the beverage, suppress bacterial growth, and obtain an antibacterial action over a long period of time.

  As mentioned above, although the example of the specific aspect of this invention was demonstrated by said embodiment, this invention is not limited to the said embodiment.

  The present invention can be used for beverage production.

100, 200 Beverage production system 103, 105, 203 Circulation path 110, 210 Uniform unit 120 Ultrafine bubble generator 121, 221 Bubble generator 122, 222 Bubble crusher 123, 223 Reservoir 130, 230 Deaerator S1, S2 Beverage production method

Claims (11)

A first degassing step for degassing the beverage and reducing the dissolved gas concentration;
A nitrogen bubble generating step for generating ultrafine bubbles by nitrogen gas in the deaerated beverage;
And a heat sterilization step of heat sterilizing a beverage containing ultrafine bubbles by nitrogen gas.
Between the first degassing step and the nitrogen bubble generating step,
A carbon dioxide bubble generating step for generating ultrafine bubbles by carbon dioxide gas in the deaerated beverage,
The beverage production method according to claim 1, comprising a second degassing step of degassing the beverage and reducing the dissolved gas concentration.
The bubble according to claim 1 or 2, wherein the nitrogen bubble generation step or the carbon dioxide bubble generation step includes generating fine bubbles, and irradiating the fine bubbles with ultrasonic waves to convert them into ultrafine bubbles. Production method.
The beverage manufacturing method according to any one of claims 1 to 3, further comprising a heating step of heating the beverage before the first degassing step.
The said heating process is a drink manufacturing method of Claim 4 which heats a drink by making a high pressure act on a drink.
The said 1st or 2nd deaeration process is a drink manufacturing method of Claim 5 which deaerates a drink by decompressing the stored drink.
A degassing part for reducing the gas concentration in the beverage;
An ultra-fine bubble generating unit that generates ultra-fine bubbles in the beverage,
The ultrafine bubble generating unit is a beverage manufacturing system including a storage unit that stores a beverage.
The beverage production system according to claim 7, wherein the deaeration unit is incorporated in a circulation path for circulating the beverage stored in the storage unit.
Furthermore, it is equipped with a homogenizing unit that applies high pressure to the beverage to make the particles in the beverage uniform,
The said deaeration part is a drink manufacturing system of Claim 7 or Claim 8 provided in the downstream of the equalization part.
The said ultrafine-bubble production | generation part irradiates a bubble containing drink containing a fine bubble with an ultrasonic wave, and produces | generates a fine bubble to an ultrafine bubble, The drink manufacture as described in any one of Claims 7-9. system.
The said storage part is a drink manufacturing system as described in any one of Claims 7-10 connected to the pressure reduction opening for pressurizing, and the pressurization opening for pressurization.