Bubble-containing liquid generating apparatus and nozzle

Abstract

To provide an air bubble containing liquid generator which does not need a discharge passage of an unnecessary liquid.SOLUTION: An air bubble containing liquid generator 1 includes a compression container 4, a nozzle 2, an outflow path 6, and a liquid retainer 13. The compression container 4 compressively dissolves a gas G1 into a liquid L1 to generate a compressed liquid L2. The nozzle 2 has a discharge port 22. The outflow path 6 connects the compression container 4 with the nozzle 2. The outflow path 6 causes the compressed liquid L2 to flow from the compression container 4 to the nozzle 2 to cause a discharge liquid L3 to be discharged from the discharge port 22. The liquid retainer 13 absorbs the discharge liquid L3 to retain an air containing liquid L4.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a bubble-containing liquid generating device and a nozzle, and particularly to a bubble-containing liquid generating device and a nozzle for generating a bubble-containing liquid.

Background Art

[0002] In recent years, the spread of bubble-containing liquids in which minute bubbles are contained in a liquid has been progressing. Patent Document 1 describes a conventional bubble-containing liquid production device.

[0003] The bubble-containing liquid production device described in Patent Document 1 includes a fine bubble liquid generation unit, a filtration unit, a first storage unit, and a second storage unit. The fine bubble liquid generation unit mechanically mixes water and air to generate an initial liquid containing fine bubbles and stores the initial liquid in the first storage unit. When the bubble density of the initial liquid is less than the target density, the initial liquid is introduced into the filtration unit. The filtration unit has a first filter and a second filter with a finer filtration particle size than the first filter. The filtration unit discharges bubbles having a large diameter that do not pass through the first filter and the liquid that passes through the second filter to generate a liquid with a high bubble density.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the bubble-containing liquid production device described in Patent Document 1, in the filtration unit, the liquid that does not pass through the first filter and the liquid that passes through the second filter are discharged as unnecessary liquids. Therefore, a discharge path or the like for discharging these unnecessary liquids is required.

[0006] This disclosure has been made in view of the above points, and aims to provide a bubble-containing liquid generating device and nozzle that do not require an unnecessary liquid discharge path. [Means for solving the problem]

[0007] A bubble-containing liquid generating apparatus according to one aspect of the present disclosure comprises a pressurized container, a nozzle, an outlet path, and a liquid holder. The pressurized container generates a pressurized liquid by dissolving a gas under pressure in a liquid. The nozzle has a discharge port. The outlet path connects the pressurized container and the nozzle. The liquid holder is detachable from the nozzle. The nozzle includes a bubble deposition section between the outflow path and the discharge port. The discharge path allows the pressurized liquid to flow from the pressurized container to the nozzle, and the discharged liquid to be discharged from the discharge port. The liquid holder absorbs the discharged liquid and the bubble-containing liquid The first bubble-containing liquid It holds. The bubble deposition unit precipitates bubbles in the pressurized liquid to produce a second bubble-containing liquid as the discharged liquid. The density of bubbles in the first bubble-containing liquid is higher than the density of bubbles in the second bubble-containing liquid.

[0009] Furthermore, a nozzle according to one aspect of this disclosure is a nozzle that receives a pressurized liquid and causes a bubble-containing liquid to be contained in a liquid holder. The nozzle is a holder And the bubble deposition area, The holding portion holds the liquid holder so as to block the discharge opening of the nozzle. The liquid holder is detachable from the nozzle. The liquid holder holds the first bubble-containing liquid as the bubble-containing liquid. The bubble deposition unit precipitates bubbles in the pressurized liquid and discharges the second bubble-containing liquid from the discharge port. The density of bubbles in the first bubble-containing liquid is higher than the density of bubbles in the second bubble-containing liquid. [Effects of the Invention]

[0010] According to one aspect of this disclosure, a bubble-containing liquid generating apparatus and nozzle can be realized that does not require a discharge channel for unnecessary liquid. [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 is a schematic diagram of the bubble-containing liquid generating apparatus according to an embodiment. [Figure 2] Figure 2 is a functional block diagram of the control circuit of the bubble-containing liquid generation device described above. [Figure 3] Figure 3 is a front view of the nozzle of the bubble-containing liquid generating apparatus described above. [Figure 4] Figure 4 is a front view of the nozzle according to Modification 1. [Figure 5] Figure 5 is a front view of the nozzle according to modified example 2. [Figure 6] Figure 6 is a front view of the nozzle according to modified example 3. [Figure 7] Figure 7 is a front view of the nozzle according to Modification 4. [Modes for carrying out the invention]

[0012] Hereinafter, a bubble-containing liquid generating apparatus according to an embodiment of this disclosure will be described in detail with reference to the drawings. However, the figures described in the following embodiments are schematic diagrams, and the ratios of the size and thickness of each component do not necessarily reflect the actual dimensional ratios. Furthermore, the configuration described in the following embodiments is merely one example of this disclosure. This disclosure is not limited to the following embodiments, and various modifications are possible depending on the design, etc., as long as the effects of this disclosure can be achieved.

[0013] (Embodiment) (1) Configuration of the bubble-containing liquid generating apparatus Figure 1 is a schematic diagram showing the configuration of the bubble-containing liquid generating apparatus 1 according to an embodiment.

[0014] The bubble-containing liquid generator 1 is a device that generates bubble-containing liquids. A bubble-containing liquid is a liquid that contains bubbles. Bubbles contained in a liquid are called by different names depending on their size. For example, bubbles with a diameter of 100 μm or less are called fine bubbles. Among fine bubbles, bubbles with a diameter of less than 1 μm are called ultrafine bubbles, and bubbles with a diameter of 1 μm or more are called microbubbles. The bubble-containing liquid generator 1 generates, for example, ultrafine bubble water in which ultrafine bubbles are contained in the liquid. In the ultrafine bubble water generated by the bubble-containing liquid generator 1, for example, the liquid is water and the gas that forms the bubbles is air.

[0015] As shown in Fig. 1, the bubble-containing liquid generating device 1 includes a device main body 9, a nozzle 2, and a liquid holder 13. The device main body 9 includes a housing 3, a pressure vessel 4, a pressure detection unit 41, a liquid supply unit 5, an outflow path 6, a discharge control unit 7, and a gas path 11.

[0016] The device main body 9 pressurizes and dissolves a gas G1, which is a material for bubbles, in a liquid L1 to generate a pressurized liquid L2 and discharges it to the nozzle 2. Pressurized dissolution means dissolving the gas G1 in the liquid L1 in a pressure environment higher than the atmospheric pressure (1 atm).

[0017] (1.1) Configuration of the nozzle and the liquid holder The nozzle 2 has a decompression mechanism for the pressurized liquid L2 discharged from the outflow path 6 of the device main body 9 and discharges a bubble-containing liquid as the discharged liquid L3.

[0018] The nozzle 2 is connected to the outflow path 6 of the device main body 9. The nozzle 2 has a connection port 21 connected to the outflow path 6 of the device main body 9 and a discharge port 22. Also, the flow path 23 between the connection port 21 and the discharge port 22 has a decompression mechanism 24 as a bubble precipitation part. The decompression mechanism 24 is composed of, for example, an orifice. The decompression mechanism 24 precipitates bubbles in the pressurized liquid L2 to generate a bubble-containing liquid. The bubble-containing liquid generated by the decompression mechanism 24 is spray-discharged from the discharge port 22 as the discharged liquid L3. The nozzle 2 is composed of, for example, resin.

[0019] In addition, the nozzle 2 has a holding part 25 for holding the liquid holder 13. The holding part 25 is a member for holding the liquid holder 13 at a position closing the discharge port 22 of the nozzle 2. The holding part 25 is, for example, a hook having a shape that presses the liquid holder 13 against the discharge port 22. The holding part 25 is, for example, ring-shaped and holds and fixes the liquid holder 13.

[0020] The liquid retainer 13 is a liquid absorbent that absorbs the discharged liquid L3 and holds the bubble-containing liquid L4. The liquid retainer 13 is made of, for example, fibers and has the property of absorbing the same liquid as liquid L1. The liquid retainer 13 is, for example, a cotton product or a paper product, specifically, so-called cotton (absorbent cotton), a cosmetic face mask, or a paper towel. The liquid retainer 13 absorbs the discharged liquid L3 discharged from the discharge port 22 of the nozzle 2 and generates and holds the bubble-containing liquid L4. When the discharged liquid L3 is a bubble-containing liquid, the density of bubbles contained in the bubble-containing liquid L4 held in the liquid retainer 13 is higher than the density of bubbles contained in the discharged liquid L3. Of the discharged liquid L3, which is a bubble-containing liquid, a portion of the same liquid as liquid L1 is adsorbed onto the liquid retainer 13, so the proportion of liquid components in the discharged liquid L3 decreases. As a result, bubbles are concentrated in the bubble-containing liquid, and the bubble-containing liquid L4 is held in the liquid retainer 13.

[0021] The liquid holder 13 is, for example, attached to the holding portion 25 of the nozzle 2 in a dry state and used as a member to hold the bubble-containing liquid L4 when the nozzle 2 discharges the discharge liquid L3. The liquid holder 13 is replaced, for example, each time the bubble-containing liquid L4 is used.

[0022] (1.2) Configuration of the main unit of the device The main body of the device 9 includes a housing 3, a pressurized container 4, a pressure detection unit 41, a liquid supply unit 5, an outlet path 6, a discharge control unit 7, and a gas path 11.

[0023] The housing 3 is a case that houses the pressurized container 4, the pressure detection unit 41, the liquid supply unit 5, a part of the outflow path 6, and a part of the discharge control unit 7. The housing 3 also has an inlet 511, which is a through hole that communicates with the liquid container 51 of the liquid supply unit 5. A lid 31 is detachably attached to the inlet 511. The housing 3 is also provided with a through hole 32 for exposing the discharge switch 71 of the discharge control unit 7 to the outside of the housing 3, and a through hole 33 for exposing a part of the outflow path 6 to the outside of the housing 3. The housing 3 is made of, for example, resin.

[0024] The pressurized container 4 is a container that generates a pressurized liquid L2 in which gas G1 is dissolved under pressure in liquid L1. The pressurized container 4 is connected to a liquid supply unit 5, a pressure detection unit 41, a gas path 11, and an outlet path 6. The pressurized container 4 is sealed except for the connections between the liquid supply unit 5, the pressure detection unit 41, the gas path 11, and the outlet path 6. The pressurized container 4 is made of, for example, metal or resin.

[0025] The pressure detection unit 41 is a pressure sensor that detects the internal pressure inside the pressurized container 4. For example, the pressurized container 4 has a pressure detection hole which is a through hole, and the pressure detection unit 41 is connected to the pressure detection hole. Alternatively, for example, the pressure detection unit 41 may be installed inside the pressurized container 4. The pressure detection unit 41 is, for example, a diffusion-type pressure sensor. Note that other pressure sensors or pressure gauges, such as a capacitive-type pressure sensor, may be used as the pressure detection unit 41.

[0026] The gas path 11 is the inflow path for gas supplied from the outside to the pressurized container 4. The gas supplied from the gas path 11 is, for example, air. The gas path 11 is a conduit connecting the intake port 34, which is a through-hole provided in the housing 3, and the gas supply port 44, which is a through-hole provided in the pressurized container 4. The gas path 11 is made of, for example, metal or resin. A gas intake valve 12 is provided along the gas path 11. The gas path 11 may also be equipped with an air filter between the gas intake valve 12 and the intake port 34 of the housing 3 to prevent the intake of dust and powder.

[0027] The gas intake valve 12 is a backflow prevention valve that restricts the direction of gas passage in the gas path 11 to one direction. The gas intake valve 12 allows air to flow in from the intake port 34 of the housing 3 to the gas supply port 44 of the pressurized container 4. On the other hand, the gas intake valve 12 blocks the backflow of gas G1 and pressurized liquid L2 from the gas supply port 44 of the pressurized container 4 to the intake port 34 of the housing 3. The gas intake valve 12 is, for example, a check valve that utilizes the pressure difference between the pressurized container 4 and the outside, opening when the internal pressure of the pressurized container 4 is lower than the ambient pressure and closing when the internal pressure of the pressurized container 4 is higher than the ambient pressure.

[0028] The liquid supply unit 5 supplies liquid L1 to the pressurized container 4. The liquid supply unit 5 includes a liquid container 51, a supply path 52, a liquid pump 53, and an inflow path 54.

[0029] The liquid container 51 is a container for storing liquid L1. The liquid container 51 is made of, for example, metal or resin. The liquid container 51 is in communication with the outside of the housing 3 by an inlet 511, and is configured to allow replenishment of liquid L1 through the inlet 511. The inlet 511 is preferably located away from the opening in the liquid container 51 of the replenishment path 52, which will be described later. The inlet 511 is, for example, located at the top of the liquid container 51. When the lid 31 is attached to the inlet 511, the inflow and outflow of liquid L1 between the liquid container 51 and the outside via the inlet 511 is suppressed. The liquid container 51 is also connected to the replenishment path 52.

[0030] The liquid pump 53 has the function of pressurizing and injecting liquid L1 from the liquid container 51 into the pressurized container 4, and the function of backflowing pressurized liquid L2 from the pressurized container 4 into the liquid container 51. Pressurized injection means injecting liquid L1 into the pressurized container 4 by applying a pressure greater than atmospheric pressure. The liquid pump 53 has a suction port 531 and a discharge port 532. In forward operation (also simply called "operation"), it transports liquid from the suction port 531 to the discharge port 532, and in reverse operation, it transports liquid from the discharge port 532 to the suction port 531. The liquid pump 53 is, for example, a gear pump or a vane pump. The liquid pump 53 has a motor as its power source, which operates and stops according to the instructions of the control circuit 10, which will be described later. When the motor rotates in the forward direction, the liquid pump 53 operates in the forward direction. When the motor rotates in the reverse direction, the liquid pump 53 operates in the reverse direction. When the motor stops, the liquid pump 53 stops operating.

[0031] The replenishment path 52 is a conduit connecting the liquid container 51 and the suction port 531 of the liquid pump 53. The replenishment path 52 is a conduit connecting the inside of the liquid container 51 and the suction port 531 of the liquid pump 53. The replenishment path 52 is made of, for example, metal, resin, or rubber. The end of the replenishment path 52 on the liquid container 51 side is located at the bottom of the liquid container 51. Alternatively, the replenishment path 52 is, for example, a flexible tube with a specific gravity greater than that of the liquid L1, and has a length that reaches the bottom of the liquid container 51. When the liquid pump 53 is operating in the forward direction, the replenishment path 52 functions as a liquid path for supplying liquid L1 from the liquid container 51 to the liquid pump 53. On the other hand, when the liquid pump 53 is operating in the reverse direction, the replenishment path 52 functions as a liquid path for discharging pressurized liquid L2 from the liquid pump 53 to the liquid container 51.

[0032] The inlet path 54 is a conduit connecting the discharge port 532 of the liquid pump 53 to the pressurized container 4. The inlet path 54 is made of, for example, metal, resin, or rubber. The inlet path 54 penetrates, for example, the liquid supply hole 42 of the pressurized container 4 and opens inside the pressurized container 4. When the liquid pump 53 is operating in the forward direction, the inlet path 54 functions as a liquid path for discharging liquid L1 from the liquid pump 53 to the pressurized container 4. On the other hand, when the liquid pump 53 is operating in the reverse direction, the inlet path 54 functions as a liquid path for drawing up pressurized liquid L2 from the pressurized container 4 to the liquid pump 53. Therefore, it is preferable that the end of the inlet path 54 on the pressurized container 4 side opens inside the pressurized liquid L2 in order to draw up the pressurized liquid L2.

[0033] The discharge path 6 is a liquid flow path that discharges pressurized liquid L2 from the pressurized container 4 to the nozzle 2. The discharge path 6 includes a first discharge path 61 and a second discharge path 62.

[0034] The first outlet path 61 is a conduit connecting the inside of the pressurized container 4 to the inlet 72 of the discharge control unit 7. The first outlet path 61 is made of, for example, metal, resin, or rubber. The first outlet path 61 is, for example, entirely located inside the housing 3. The first outlet path 61 is, for example, inserted into the pressurized container 4 by passing through a liquid discharge hole 43 provided in the pressurized container 4, and opens inside the pressurized container 4. The opening of the first outlet path 61 on the pressurized container 4 side is located in the pressurized liquid L2. The first outlet path 61 is, for example, inserted to the bottom of the pressurized container 4. As a result, the pressurized liquid L2 is pushed out to the discharge control unit 7 via the first outlet path 61 by the internal pressure of the pressurized container 4.

[0035] The second discharge path 62 is a conduit connecting the discharge port 73 of the discharge control unit 7 and the connection port 21 of the nozzle 2. The second discharge path 62 is made of, for example, resin or rubber. The second discharge path 62 passes through a through hole 33 provided in the housing 3, and at least the connection portion with the nozzle 2 is located outside the housing 3. Note that the second discharge path 62 may be located outside the housing 3 except for the connection portion with the discharge port 73 of the discharge control unit 7.

[0036] The discharge control unit 7 is located in the middle of the outflow path 6, that is, between the first outflow path 61 and the second outflow path 62, and is a mechanism that controls the discharge of pressurized liquid L2 from the pressurized container 4 to the nozzle 2. The discharge control unit 7 has an inlet 72, an outlet 73, a movable block 74, and a discharge switch 71. In the discharge control unit 7, for example, the movable block 74 is provided on the flow path 75 connecting the inlet 72 and the outlet 73. The movable block 74 is supported by, for example, an elastic body, and is configured to have a different position depending on whether the discharge switch 71 is pressed or not. The discharge switch 71 is located outside the housing 3 through a through hole 32 in the housing 3. When the discharge switch 71 is not pressed, the movable block 74 blocks the flow path 75. Therefore, when the discharge switch 71 is not pressed, the discharge control unit 7 is in a closed state where the pressurized liquid L2 cannot flow out from the inlet 72 to the outlet 73. On the other hand, when the discharge switch 71 is pressed, the movable block 74 is pressed by the discharge switch 71, and the flow path 75 is connected. Therefore, when the discharge switch 71 is pressed, the discharge control unit 7 is in an open state, allowing the pressurized liquid L2 to flow out from the inlet 72 to the outlet 73.

[0037] (2) Function of the bubble-containing liquid generating device The main body 9 of the bubble-containing liquid generating apparatus 1 includes a control circuit 10 as shown in Figure 2. The control circuit 10 includes a pressure measuring unit 81, an indicator unit 82, and a storage unit 83. The control circuit 10 has one or more processors and memory.

[0038] The pressure measuring unit 81 is a circuit that measures the internal pressure of the pressurized container 4. The pressure measuring unit 81 acquires a signal indicating the internal pressure of the pressurized container 4 (see Figure 1) from the pressure detection unit 41 and outputs the internal pressure value of the pressurized container 4.

[0039] The instruction unit 82 is a circuit that instructs the pressurized supply of liquid L1 to the pressurized container 4 and the reverse flow of pressurized liquid L2. The instruction unit 82 controls, for example, the voltage applied to the motor of the liquid pump 53 to operate the liquid pump 53 in the forward direction, operate the liquid pump 53 in the reverse direction, or stop the liquid pump 53. The instruction unit 82 obtains the internal pressure value of the pressurized container 4 from the pressure measuring unit 81 and compares the internal pressure of the pressurized container 4 with the reference internal pressure. If the internal pressure of the pressurized container 4 is less than the reference internal pressure, the instruction unit 82 operates the liquid pump 53 in the forward direction to pressurize and inject liquid L1 from the liquid container 51 into the pressurized container 4. The reference internal pressure is, for example, 0.5 MPa (5 atmospheres). Note that the reference internal pressure is not limited to 0.5 MPa (5 atmospheres), but can be in the range of 0.2 MPa (2 atmospheres) to 1 MPa (10 atmospheres). The reference internal pressure is stored in advance in, for example, the memory unit 83.

[0040] After operating the liquid pump 53, the instruction unit 82 calculates the rate of change in internal pressure of the pressurized container 4 per unit time, which is obtained from the pressure measuring unit 81. If the rate of change in internal pressure of the pressurized container 4 per unit time is less than the reference rate of change, the instruction unit 82 operates the liquid pump 53 in the forward direction until the internal pressure of the pressurized container 4 is equal to or greater than the reference internal pressure. When the internal pressure of the pressurized container 4, as obtained from the pressure measuring unit 81, reaches or exceeds the reference internal pressure, the instruction unit 82 stops the liquid pump 53.

[0041] On the other hand, if the pressure change per unit time of the internal pressure of the pressurized container 4 is greater than or equal to a reference change, the indicator unit 82 operates the liquid pump 53 in the reverse direction for the reverse flow time. The reverse flow time is stored in advance, for example, in the memory unit 83. After operating the liquid pump 53 in the reverse direction for the reverse flow time, the indicator unit 82 operates the liquid pump 53 in the forward direction until the internal pressure of the pressurized container 4 is equal to or equal to the reference internal pressure. When the internal pressure of the pressurized container 4 obtained from the pressure measuring unit 81 reaches equal to or equal to the reference internal pressure, the indicator unit 82 stops the liquid pump 53.

[0042] Furthermore, if the internal pressure of the pressurized container 4 is equal to or greater than the standard internal pressure, the indicator unit 82 will not operate the liquid pump.

[0043] (3) Operation The operation of the bubble-containing liquid generating device 1 will be described below.

[0044] First, assume that the state of the pressurized container 4 is such that the internal pressure of the pressurized container 4 is equal to the external atmospheric pressure (atmospheric pressure, approximately 0.1 MPa), and only gas G1 is present in the pressurized container 4. In other words, there is no pressurized liquid L2 in the pressurized container 4. The instruction unit 82 of the control circuit 10 indicates that the internal pressure of the pressurized container 4 is below the reference internal pressure, and therefore activates the liquid pump 53. As a result, the liquid pump 53 pressurizes and injects liquid L1 from the liquid container 51 into the pressurized container 4.

[0045] When the liquid pump 53 pressurizes and injects liquid L1 from the liquid container 51 into the pressurized container 4, the volume of gas G1 in the pressurized container 4 decreases, and the internal pressure of the pressurized container 4 increases. When the internal pressure of the pressurized container 4 rises to the standard internal pressure, the instruction unit 82 of the control circuit 10 stops the liquid pump 53. As a result, the internal pressure of the pressurized container 4 rises to the standard internal pressure. Also, the liquid L1 in the pressurized container 4 dissolves an amount of gas G1 corresponding to the internal pressure of the pressurized container 4 and changes into pressurized liquid L2. Therefore, the bubble-containing liquid generating device 1 becomes ready to discharge liquid L3 from the nozzle 2.

[0046] When a user uses the bubble-containing liquid L4, the liquid holder 13 is attached to the holding part 25 of the nozzle 2 so that the liquid holder 13 blocks the discharge port 22 of the nozzle 2, and the discharge switch 71 of the discharge control unit 7 is pressed by the user. This opens the outflow path 6 from the pressurized container 4 to the nozzle 2, so that the pressurized liquid L2 in the pressurized container 4 is pushed out into the outflow path 6 by the internal pressure of the pressurized container 4 and flows into the connection port 21 of the nozzle 2. The pressurized liquid L2 that has flowed into the flow path 23 from the connection port 21 of the nozzle 2 is depressurized by the depressurization mechanism 24 of the nozzle 2, and bubbles precipitate in the pressurized liquid L2. That is, fine bubbles are generated in the depressurized pressurized liquid L2, and bubble-containing liquid is generated as the discharge liquid L3. Therefore, the discharge liquid L3, which is bubble-containing liquid, is discharged from the discharge port 22 of the nozzle 2.

[0047] When the discharge liquid L3 is discharged from the discharge port 22 of the nozzle 2 into the liquid holder 13, the liquid holder 13 absorbs the discharge liquid L3. Then, the liquid holder 13 is removed by the user from the holding part 25 of the nozzle 2, and the liquid holder 13 comes into contact with the object. At this point, a portion of the same liquid L1 contained in the discharge liquid L3 is adsorbed onto the liquid holder 13. Consequently, a portion of the same liquid L1 contained in the bubble-containing liquid L4 moves to the object. On the other hand, the bubbles of gas G1 contained in the discharge liquid L3 also move to the object. In other words, in the bubble-containing liquid L4, the proportion of liquid components is lower than in the discharge liquid L3, so the density (concentration) of bubbles is higher than in the discharge liquid L3. For example, the concentration of bubbles as fine bubbles in the bubble-containing liquid L4 is 2.7 times that of bubbles as fine bubbles in the discharge liquid L3.

[0048] Furthermore, the average particle size of the bubbles in the bubble-containing liquid L4 is smaller than the average particle size of the bubbles in the discharged liquid L3. Possible reasons for this include the adsorption of larger bubbles onto the liquid holder 13, and the precipitation of smaller bubbles in the bubble-containing liquid L4 held by the liquid holder 13. For example, the average particle size of the fine bubbles in the bubble-containing liquid L4 is 0.8 times that of the fine bubbles in the discharged liquid L3.

[0049] When the volume of pressurized liquid L2 in the pressurized container 4 decreases due to the user's use of the bubble-containing liquid L4, that is, the discharge of liquid L3 from nozzle 2, the gas G1 in the pressurized container 4 expands, and the internal pressure of the pressurized container 4 decreases. When the internal pressure of the pressurized container 4 falls below the standard internal pressure, the instruction unit 82 of the control circuit 10 instructs the liquid pump 53 to pressurize and inject liquid L1 from liquid container 51 into the pressurized container 4. At this time, the instruction unit 82 calculates the amount of pressure change per unit time of the internal pressure of the pressurized container 4 obtained from the pressure measuring unit 81. When the same amount of liquid L1 is pressurized and injected into the pressurized container 4, the larger the amount of gas G1 in the pressurized container 4, the smaller the rate of volume reduction of gas G1 and therefore the smaller the pressure change. Conversely, the smaller the amount of gas G1 in the pressurized container 4, the larger the rate of volume reduction of gas G1 and therefore the larger the pressure change. Therefore, if the amount of pressure change is less than the standard change, it means that there is still enough gas G1 remaining in the pressurized container 4, and the instruction unit 82 instructs to replenish the liquid L1. In other words, the instruction unit 82 causes the liquid pump 53 to operate in the forward direction until the internal pressure of the pressurized container 4 exceeds the standard internal pressure. This operation causes the internal pressure of the pressurized container 4 to rise above the standard internal pressure, and pressurized liquid L2 is replenished inside the pressurized container 4. As a result, the bubble-containing liquid generator 1 returns to a state where it can discharge liquid L3 from the nozzle 2, that is, a state where the user can utilize the bubble-containing liquid L4.

[0050] On the other hand, if the pressure change is less than the standard change, the amount of gas G1 in the pressurized container 4 is small, so the indicator unit 82 replenishes the gas G1 before replenishing the liquid L1. That is, the indicator unit 82 operates the liquid pump 53 in the reverse direction for the reverse flow time. This operation reduces the amount of pressurized liquid L2 in the pressurized container 4, causing the gas G1 to expand and the internal pressure of the pressurized container 4 to decrease. When the internal pressure of the pressurized container 4 falls below the ambient pressure, the gas intake valve 12 opens, and gas G1 flows into the pressurized container 4 from outside the housing 3 until the internal pressure of the pressurized container 4 becomes equal to the ambient pressure. This replenishes the gas G1 in the pressurized container 4. After that, the indicator unit 82 operates the liquid pump 53 in the forward direction until the internal pressure of the pressurized container 4 is equal to or higher than the standard internal pressure. At this time, the internal pressure of the pressurized container 4 rises to be higher than the ambient pressure, and if the gas intake valve 12 was open, it closes. Therefore, the outflow of gas G1 from the gas path 11 is suppressed, and the internal pressure of the pressurized container 4 increases. As a result of this action, the internal pressure of the pressurized container 4 rises above the standard internal pressure, and pressurized liquid L2 is replenished inside the pressurized container 4. Consequently, the bubble-containing liquid generator 1 returns to a state where it can discharge liquid L3 from the nozzle 2, that is, a state where the user can utilize the bubble-containing liquid L4.

[0051] (4) Use of liquids containing bubbles The following describes the use of the bubble-containing liquid L4 produced by the bubble-containing liquid generation device 1.

[0052] As mentioned above, the bubble-containing liquid L4 is, for example, fine bubble water, specifically microbubble water or ultrafine bubble water. In fine bubble water, the bubble surface is negatively charged, so it has the ability to adsorb positively charged substances, such as organic matter, and also exhibits surfactant properties.

[0053] Furthermore, microbubble water can exhibit a sterilizing effect by, for example, incorporating highly oxidizing ozone as bubbles.

[0054] Furthermore, ultrafine bubble water has small bubbles and high permeability. In addition, because plants can easily absorb ultrafine bubble water, it can promote plant metabolism and growth by incorporating oxygen or air as bubbles, for example.

[0055] The bubble-containing liquid L4 may be used while still held in the liquid holder 13, or it may be used separately from the liquid holder 13. For example, the liquid holder 13 can be pressed against or attached to the object containing the bubble-containing liquid L4 for use. Alternatively, for example, the liquid holder 13 can be squeezed to extract the bubble-containing liquid L4 as a liquid.

[0056] (5) Effects In the bubble-containing liquid generating apparatus 1 according to this embodiment, the bubble-containing liquid L4 is obtained from the liquid holder 13. Therefore, the bubble-containing liquid L4 can be used by the user.

[0057] Furthermore, in the bubble-containing liquid generating apparatus 1 according to this embodiment, the liquid holder 13 adsorbs the same liquid L1 in the discharged liquid L3 discharged from the nozzle 2, thereby generating a bubble-containing liquid L4 with a higher bubble density than the discharged liquid L3. Therefore, there is no need for a discharge channel for liquid L1 to improve the bubble density of the bubble-containing liquid L4. In other words, the bubble-containing liquid generating apparatus 1 can have a simple configuration. Also, the liquid holder 13 can be anything that holds liquid L1, and specifically, it can be anything made of fibers. Therefore, the liquid holder 13 can be easily prepared. In addition, if the liquid holder 13 is used as a consumable item, the bubble-containing liquid L4 can be used hygienically.

[0058] Furthermore, in the bubble-containing liquid generating apparatus 1 according to this embodiment, liquid L1 is injected into the pressurized container 4 so that the internal pressure of the pressurized container 4 becomes equal to or greater than the standard internal pressure. Therefore, the internal pressure of the pressurized container 4 can be increased using the liquid pump 53 without using an air pump. Consequently, since an air pump, which tends to be large, is not used, the bubble-containing liquid generating apparatus 1 can be made more compact.

[0059] Furthermore, in the bubble-containing liquid generating apparatus 1 according to this embodiment, a gas path 11 having a gas intake valve 12 is connected to the pressurized container 4. Therefore, gas can be introduced into the pressurized container 4 by utilizing the difference between the outside air pressure and the internal pressure of the pressurized container 4. As a result, gas can be replenished in the pressurized container 4 without using an air pump.

[0060] Furthermore, in the bubble-containing liquid generating apparatus 1 according to this embodiment, the liquid pump 53 has a backflow function that causes pressurized liquid L2 to flow back from the pressurized container 4 into the liquid container 51. Therefore, it is easy to reduce the internal pressure of the pressurized container 4 to below ambient pressure using the backflow function of the liquid pump 53. Consequently, the replenishment of gas into the pressurized container 4 by the gas path 11 having the gas intake valve 12 can be performed even more efficiently.

[0061] (6) Shape of the retaining part The following describes the shapes of the nozzle body 2a and the holding part 25 that constitute the nozzle 2. The nozzle body 2a refers to the part of the nozzle 2 other than the holding part 25.

[0062] The nozzle body 2a is, for example, a rectangular prism. The nozzle body 2a may also be a polygonal prism, such as a pentagonal or hexagonal prism, or it may be cylindrical. Furthermore, the nozzle body 2a may be a cone, a frustocone, a pyramidal

[0063] Figure 3 is a front view showing the shape of the nozzle 2 according to the embodiment. The holding portion 25 holds the liquid holder 13 so as to block the discharge port 22. The holding portion 25 includes, for example, a connecting portion 25a and a holding portion body 25b. The holding portion body 25b faces the discharge port 22. The connecting portion 25a extends in the direction in which the discharge port 22 discharges the discharge liquid L3 and connects the holding portion body 25b and the nozzle body 2a. As shown in Figure 3, the holding portion body 25b according to the embodiment is ring-shaped (annular) surrounding the through hole and has a triangular outer edge. The connecting portion 25a is connected to a part of the holding portion body 25b.

[0064] The shape of the holding part 25 is not limited to the shape described above. The holding part body 25b according to Modification 1 is, for example, pentagonal in shape as shown in Figure 4. The holding part body 25b may also be any polygonal in shape. The part of the holding part body 25b facing the discharge port 22 is a through hole, allowing the user to take out the discharged liquid L3. The outer edge of the holding part body 25b is not polygonal, but may be a shape in which the corners of a polygon are rounded in an arc shape. Also, the holding part body 25b does not have to have a through hole. The holding part body 25b according to Modification 2 is rectangular in shape with the corners rounded in an arc shape, as shown in Figure 5, and does not have a through hole.

[0065] The shape of the holding part body 25b is not limited to the examples described above. For example, the shape of the holding part body 25b may be circular, elliptical, or any other shape. The shape of the holding part body 25b in the modified example 3 is, for example, a heart-shaped outer edge, as shown in Figure 6.

[0066] Furthermore, the shape of the through-hole in the holding part body 25b does not need to be the same as the shape of the outer circumference of the holding part body 25b. For example, the holding part body 25b may be triangular in shape with a circular through-hole. Also, for example, the holding part body 25b according to modified example 4, as shown in Figure 7, has a rectangular through-hole on the oval outer edge which is a combination of a rectangle and an arc.

[0067] These are merely examples, and the holding portion 25 can have any shape as long as it can hold the liquid holder 13 so as to block the discharge port 22.

[0068] (Variation 5) In this embodiment, the nozzle 2 has a pressure reduction mechanism 24 consisting of an orifice, but the pressure reduction mechanism is not limited to an orifice and can be any pressure reduction mechanism. Alternatively, for example, the nozzle 2 may be equipped with a turbulence generation mechanism as a bubble deposition section. The turbulence generation mechanism generates turbulence, causing a local pressure drop in the pressurized liquid L2, and depositing bubbles in the pressure-reduced area. The turbulence generation mechanism is, for example, a Venturi tube. Note that the turbulence generation mechanism is not limited to a Venturi tube and can be any turbulence generation mechanism.

[0069] Alternatively, nozzle 2 includes a shearing mechanism as a bubble deposition section. The shearing mechanism precipitates fine bubbles by finely shearing the pressurized liquid L2. The shearing mechanism is, for example, a static mixer. Note that the shearing mechanism is not limited to a static mixer, but any shearing mechanism is acceptable.

[0070] Alternatively, nozzle 2 may be equipped with a heating mechanism as a bubble deposition section. The heating mechanism heats the pressurized liquid L2, reducing the solubility of gas G1 in the pressurized liquid L2 and causing bubbles to precipitate. The heating mechanism may be, for example, an electric heater.

[0071] Alternatively, nozzle 2 may be equipped with a swirling mechanism as a bubble deposition section. The swirling mechanism may be, for example, a helical flow path.

[0072] Furthermore, the nozzle 2 may have a combination of two or more of the following as a bubble deposition section: a depressurization mechanism, a turbulence generation mechanism, a shearing mechanism, a heating mechanism, and a swirling mechanism.

[0073] (Experimental variation 6) In this embodiment, the nozzle 2 has a holding portion 25 for holding the liquid container 13. However, the nozzle 2 may have, for example, a housing portion for containing the liquid container 13. Alternatively, for example, the nozzle 2 may have a shape that makes it easy to press or wrap the liquid container 13 around the nozzle 2. Alternatively, for example, the nozzle 2 may be fixed to the device body 9, and the device body 9 may have a holding portion for holding the liquid container 13 at a position opposite the discharge port 22 of the nozzle 2.

[0074] (Example 7) In this embodiment, the nozzle 2 discharges a bubble-containing liquid as the discharge liquid L3 and allows it to be absorbed by the liquid holder 13. However, the user may also use the bubble-containing liquid discharged from the nozzle 2 as the discharge liquid L3. As described above, the bubble density of the bubble-containing liquid as the discharge liquid L3 and the bubble-containing liquid L4 held in the liquid holder 13 are different. Therefore, the user may use the bubble-containing liquid as the discharge liquid L3 and the bubble-containing liquid L4 held in the liquid holder 13 depending on the application. For example, the nozzle 2 may be configured to discharge the bubble-containing liquid L3 to a position intended by the user when the holding part 25 is not holding the liquid holder 13.

[0075] (Variation 8) In this embodiment, the nozzle 2 has a bubble deposition section, but the nozzle 2 does not necessarily have to have a bubble deposition section. In this case, the nozzle 2 passes the pressurized liquid L2 flowing in from the outflow path 6 through the flow path 23 and discharges it as discharge liquid L3 into the liquid holder 13. Since the liquid holder 13 and the space between the discharge port 22 of the nozzle 2 and the liquid holder 13 are under atmospheric pressure, the discharge liquid L3 is depressurized and bubbles precipitate. Therefore, the liquid holder 13 absorbs the bubble-containing liquid generated when the discharge liquid L3 is depressurized. Furthermore, as described above, since a portion of the same liquid as liquid L1 in the discharge liquid L3 is absorbed into the liquid holder 13, a bubble-containing liquid L4 with a higher bubble density than the bubble-containing liquid generated from the discharge liquid L3 is held in the liquid holder 13. Therefore, the bubble-containing liquid L4 can be used by the user.

[0076] (Extreme variation 9) In this embodiment, if the rate of change of the internal pressure of the pressurized container 4 during the forward operation of the liquid pump 53 is greater than or equal to a reference rate of change, the indicator unit 82 causes the liquid pump 53 to operate in the reverse direction for a predetermined reverse flow time. However, the reverse operation of the liquid pump 53 is not limited to the reverse flow time. For example, if the rate of change of the internal pressure of the liquid pump 53 during operation is greater than or equal to a reference rate of change, the indicator unit 82 may cause the liquid pump 53 to operate in the reverse direction until the internal pressure of the pressurized container 4 becomes 0.1 MPa (1 atmosphere) or less. In this way, the pressurized container 4 can be reliably replenished with gas.

[0077] (summary) The bubble-containing liquid generating apparatus (1) according to the first embodiment comprises a pressurized container (4), a nozzle (2), an outlet path (6), and a liquid holder (13). The pressurized container (4) generates pressurized liquid (L2) by pressurizing and dissolving gas (G1) in liquid (L1). The nozzle (2) has a discharge port (22). The outlet path (6) connects the pressurized container (4) and the nozzle (2). The outlet path (6) causes the pressurized liquid (L2) to flow from the pressurized container (4) to the nozzle (2), and discharges the discharged liquid (L3) from the discharge port (22). The liquid holder (13) absorbs the discharged liquid (L3) and holds the bubble-containing liquid (L4).

[0078] In the bubble-containing liquid generating apparatus (1) according to the above embodiment, the liquid holder (13) adsorbs the liquid (L1) component of the discharged liquid (L3), and a bubble-containing liquid (L4) with a higher bubble concentration than the discharged liquid (L3) is obtained from the liquid holder (13). Therefore, a bubble-containing liquid (L4) with a high bubble concentration can be obtained without using a discharge channel for the liquid (L1), etc.

[0079] In the bubble-containing liquid generating apparatus (1) according to the second embodiment, the liquid holder (13) is fixed so as to block the discharge port (22) of the nozzle (2).

[0080] In the bubble-containing liquid generating apparatus (1) according to the above embodiment, it is easy to have the discharged liquid (L3) absorbed by the liquid holder (13).

[0081] In the third embodiment of the bubble-containing liquid generating apparatus (1), a holding part (25) for holding a liquid holder (13) is further provided, in the first or second embodiment.

[0082] In the bubble-containing liquid generating apparatus (1) according to the above embodiment, the user does not need to hold the liquid holder (13), thus improving user convenience.

[0083] In the fourth embodiment of the bubble-containing liquid generating apparatus (1), the shape of the holding part (25) is oval, heart-shaped, or polygonal, as in the third embodiment.

[0084] In the bubble-containing liquid generating apparatus (1) according to the above embodiment, the holding part (25) can easily hold the liquid holding object (13).

[0085] In the bubble-containing liquid generating apparatus (1) according to the fifth embodiment, the holding portion (25) is annular in shape surrounding the discharge port (22), as in the third or fourth embodiment.

[0086] In the bubble-containing liquid generating apparatus (1) according to the above embodiment, not only is the bubble-containing liquid (L4) held in the liquid holder (13) held in the holding part (25), but the user can also use the discharged liquid (L3) when the liquid holder (13) is not attached to the holding part (25). Therefore, user convenience is improved.

[0087] The bubble-containing liquid generating apparatus (1) according to the sixth embodiment further includes a bubble deposition section (24) between the outflow path (6) and the discharge port (22) in any of the first to fifth embodiments of the nozzle (2). The liquid holder (13) holds the first bubble-containing liquid (L4) as the bubble-containing liquid (L4). The bubble deposition section (24) precipitates bubbles in the pressurized liquid (L2) to generate the second bubble-containing liquid (L3) as the discharge liquid (L3). The density of bubbles contained in the first bubble-containing liquid (L4) is higher than the density of bubbles contained in the second bubble-containing liquid (L3).

[0088] In the bubble-containing liquid generating apparatus (1) according to the above embodiment, by using a liquid holder (13), the density of bubbles in the second bubble-containing liquid (L3) as the discharged liquid can be concentrated, and a first bubble-containing liquid (L4) with a high bubble density can be generated.

[0089] In the bubble-containing liquid generating apparatus (1) according to the seventh embodiment, in the sixth embodiment, the bubble deposition section (24) includes at least one of a depressurization mechanism, a turbulence generation mechanism, a shearing mechanism, a heating mechanism, and a swirling mechanism.

[0090] In the bubble-containing liquid generating apparatus (1) according to the above embodiment, the bubble deposition section (24) increases the concentration of bubbles in the bubble-containing liquid, which is the discharged liquid (L3), and a bubble-containing liquid (L4) with a high concentration of bubbles can be generated.

[0091] In the bubble-containing liquid generating apparatus (1) according to the eighth embodiment, in any of the first to seventh embodiments, the liquid holder (13) is cotton.

[0092] In the bubble-containing liquid generating apparatus (1) according to the above embodiment, a bubble-containing liquid (L4) with a high concentration of bubbles can be generated.

[0093] In the bubble-containing liquid generating apparatus (1) according to the ninth embodiment, in any of the first to eighth embodiments, the bubble-containing liquid (L4) is ultrafine bubble water.

[0094] In the bubble-containing liquid generating apparatus (1) according to the above embodiment, ultrafine bubble water can be generated as the bubble-containing liquid (L4). In ultrafine bubble water, the surface of the bubbles is negatively charged, so it has the effect of adsorbing positively charged substances, such as organic matter, and also has a surfactant effect. In addition, in ultrafine bubble water, the bubbles are small and have high permeability. Furthermore, ultrafine bubble water can be easily absorbed by plants. Therefore, the ultrafine bubble water generated by the bubble-containing liquid generating apparatus (1) can be used for a variety of purposes.

[0095] The bubble-containing liquid generating apparatus (1) according to the tenth embodiment comprises a pressurized container (4) and an outlet path (6). The pressurized container (4) generates a pressurized liquid (L2) by pressurizing and dissolving a gas (G1) in a liquid (L1). The outlet path (6) connects the pressurized container (4) and a nozzle (2). The outlet path (6) causes the pressurized liquid (L2) to flow from the pressurized container (4) to the nozzle (2), discharge liquid (L3) from the nozzle (2) to a liquid holder (13), and the liquid holder (13) absorbs the discharge liquid (L3) to hold the bubble-containing liquid (L4).

[0096] In the bubble-containing liquid generating apparatus (1) according to the above embodiment, the liquid holder (13) adsorbs liquid (L1) components from the discharged liquid (L3), and a bubble-containing liquid (L4) with a higher bubble density than the discharged liquid (L3) is obtained from the liquid holder (13). Therefore, a bubble-containing liquid (L4) with a high bubble density can be obtained without using a discharge channel for the liquid (L1), etc.

[0097] The nozzle (2) according to the eleventh embodiment receives a supply of pressurized liquid (L2) and causes a bubble-containing liquid (L4) to be contained in a liquid holder (13). The nozzle (2) is equipped with a holding part (25). The holding part (25) holds the liquid holder (13) so as to block the discharge port (22) of the nozzle (2).

[0098] In the nozzle (2) according to the above embodiment, it is easy to hold the bubble-containing liquid (L4) in the liquid holder (13).

[0099] In the nozzle (2) according to the twelfth embodiment, the shape of the holding portion (25) is oval, heart-shaped, or polygonal, as in the eleventh embodiment.

[0100] In the nozzle (2) according to the above embodiment, the holding portion (25) can easily hold the liquid holder (13).

[0101] In the nozzle (2) according to the 13th embodiment, the holding portion (25) is annular and surrounds the discharge port (22), as in the 11th or 12th embodiment.

[0102] In the nozzle (2) according to the above embodiment, not only is the liquid holder (13) held in the holding part (25) held the bubble-containing liquid (L4), but the user can also use the discharged liquid (L3) when the liquid holder (13) is not attached to the holding part (25). Therefore, user convenience is improved.

[0103] The nozzle (2) according to the 14th embodiment further includes a bubble deposition section (24) in any of the 11th to 13th embodiments. The liquid holder (13) holds a first bubble-containing liquid (L4) as a bubble-containing liquid (L4). The bubble deposition section (24) deposits bubbles in the pressurized liquid (L2) and discharges a second bubble-containing liquid (L3) from the discharge port (22). The density of bubbles contained in the first bubble-containing liquid (L4) is higher than the density of bubbles contained in the second bubble-containing liquid (L3).

[0104] In the nozzle (2) according to the above embodiment, by using the liquid holder (13), the density of bubbles in the second bubble-containing liquid (L3) as the discharged liquid can be concentrated, and a first bubble-containing liquid (L4) with a high bubble density can be generated.

[0105] In the nozzle (2) according to the 15th embodiment, the bubble deposition section (24) includes one or more of the following: a turbulence generation mechanism, a depressurization mechanism, a shearing mechanism, a heating mechanism, and a swirling mechanism.

[0106] In the nozzle (2) according to the above embodiment, the bubble deposition section (24) increases the concentration of bubbles in the bubble-containing liquid, which is the discharged liquid (L3), and makes it possible to generate a bubble-containing liquid (L4) with a high concentration of bubbles.

[0107] In the nozzle (2) according to the 16th embodiment, in any of the 11th to 15th embodiments, the liquid holder (13) is cotton.

[0108] In the nozzle (2) according to the above embodiment, a bubble-containing liquid (L4) with a high concentration of bubbles can be generated.

[0109] In the nozzle (2) according to the 17th embodiment, in any of the 11th to 16th embodiments, the bubble-containing liquid (L4) is ultrafine bubble water.

[0110] In the nozzle (2) according to the above embodiment, ultrafine bubble water can be generated as a bubble-containing liquid (L4). In ultrafine bubble water, the surface of the bubbles is negatively charged, so it has the effect of adsorbing positively charged substances, such as organic matter, and also has a surfactant effect. In addition, in ultrafine bubble water, the bubbles are small and have high permeability. Furthermore, ultrafine bubble water can be easily absorbed by plants. Therefore, the ultrafine bubble water generated by the bubble-containing liquid generating device (1) can be used for a variety of purposes. [Explanation of Symbols]

[0111] 1. Apparatus for generating liquid containing bubbles 2 nozzles 4. Pressurized container 6. Discharge Route 13 Liquid retentate 22 Outlet 24 Bubble deposition area 25 Holding part G1 Gas L1 liquid L2 Pressurized Liquid L3 Discharge liquid (liquid containing second bubbles) L4 Bubble-containing liquid (First bubble-containing liquid)

Claims

1. A pressurized container that generates a pressurized liquid by dissolving a gas in a liquid under pressure, A nozzle having a discharge port, An outflow path connecting the pressurized container and the nozzle, A liquid holder that is detachable from the nozzle, Equipped with, The nozzle includes a bubble deposition section between the outflow path and the discharge port. The aforementioned outflow path causes the pressurized liquid to flow from the pressurized container to the nozzle, and the discharged liquid to be discharged from the discharge port. The liquid holder absorbs the discharged liquid and holds the first bubble-containing liquid, which is a bubble-containing liquid. The bubble deposition unit deposits bubbles in the pressurized liquid to generate a second bubble-containing liquid as the discharged liquid. The density of bubbles in the first bubble-containing liquid is higher than the density of bubbles in the second bubble-containing liquid. A device for generating liquid containing bubbles.

2. The liquid holder is fixed so as to block the discharge port of the nozzle. The bubble-containing liquid generating apparatus according to claim 1.

3. The system further comprises a holding part for holding the liquid-holding object. The bubble-containing liquid generating apparatus according to claim 1 or 2.

4. The shape of the retaining part is oval, heart-shaped, or polygonal. The bubble-containing liquid generating apparatus according to claim 3.

5. The holding portion is an annular shape surrounding the discharge port. The bubble-containing liquid generating apparatus according to claim 3 or 4.

6. The bubble deposition section includes one or more of the following: a depressurization mechanism, a turbulence generation mechanism, a shearing mechanism, a heating mechanism, and a swirling mechanism. The bubble-containing liquid generating apparatus according to claim 1.

7. The liquid holder is cotton. A bubble-containing liquid generating apparatus according to any one of claims 1 to 6.

8. The bubble-containing liquid is ultrafine bubble water. A bubble-containing liquid generating apparatus according to any one of claims 1 to 7.

9. A nozzle that receives a pressurized liquid and contains a bubble-containing liquid in a liquid holder, A holding part that holds the liquid holder so as to block the discharge opening of the nozzle, It comprises a bubble deposition section, The liquid holder is detachable from the nozzle. The liquid holder holds the first bubble-containing liquid as the bubble-containing liquid, The bubble deposition unit deposits bubbles in the pressurized liquid and discharges the second bubble-containing liquid from the discharge port. The density of bubbles in the first bubble-containing liquid is higher than the density of bubbles in the second bubble-containing liquid. nozzle.

10. The shape of the retaining part is oval, heart-shaped, or polygonal. The nozzle according to claim 9.

11. The holding portion is an annular shape surrounding the discharge port. The nozzle according to claim 9 or 10.

12. The bubble deposition section includes one or more of the following: a turbulence generation mechanism, a depressurization mechanism, a shearing mechanism, a heating mechanism, and a swirling mechanism. The nozzle according to claim 9.

13. The liquid holder is cotton. The nozzle according to any one of claims 9 to 12.

14. The bubble-containing liquid is ultrafine bubble water. The nozzle according to any one of claims 9 to 13.

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