Microbubble supply system, microbubble supply device, and control method of microbubble supply device

Abstract

A microbubble supply device supplies water containing microbubbles to a storage tank, and includes: a first temperature sensor for measuring the water temperature stored in the storage tank; a pump for drawing in and discharging the water stored in the storage tank; a generator for supplying water discharged from the pump, causing the supplied water to generate microbubbles and ultrafine bubbles, and outputting the water containing microbubbles intended for storage in the storage tank; and a control device for controlling the concentration of microbubbles and ultrafine bubbles generated by the generator from the supplied water based on the water temperature measured by the first temperature sensor.

Description

Technical Field

[0001] This invention relates to a microbubble supply system, a microbubble supply device, and a control method for the microbubble supply device. Prior Technology

[0002] In recent years, tiny bubbles, also known as microbubbles, have been widely used in various fields, including environmental fields such as water purification, industrial fields such as cleaning or combustion improvement, food fields such as sterilization or cleaning, and daily fields such as bathing or health enhancement.

[0003] Microbubbles are bubbles with a diameter of less than 100 μm. Among them, visible, cloudy white bubbles with a diameter of 1 to 100 μm are called microbubbles, while colorless and transparent bubbles with a diameter of less than 1 μm that are not visible to the naked eye are called ultrafine bubbles (Microbubble Society, HP: http: / / www.fb-union.org / index.html).

[0004] Because these microbubbles are extremely small, they possess a variety of characteristic properties compared to ordinary bubbles. In particular, due to their larger specific surface area compared to ordinary bubbles within the same volume, the physical adsorption forces at the gas-liquid interface become very strong. This adsorption effect of bubbles is crucial in any application; therefore, to maximize the surface area of ​​bubbles within the same volume, it is preferable to minimize the bubble diameter and maximize the bubble density.

[0005] As a known microbubble supply device, for example, Japanese Patent Application Publication No. 2006-289183 describes a method and apparatus that supplies a liquid containing microbubbles to a storage tank and applies ultrasonic vibration to the liquid to crush the microbubbles in the liquid, thereby generating nanobubbles in the liquid.

[0006] Furthermore, Japanese Patent Application Publication No. 2012-250138 discloses a device that applies high pressure and physical stimulation to microbubbles contained in a liquid, thereby causing the microbubbles to shrink rapidly. [Previous Technical Documents] [Patent Literature]

[0007] [Patent Document 1] Japanese Patent Application Publication No. 2006-289183 [Patent Document 2] Japanese Patent Application Publication No. 2012-250138 Summary of the Invention

[0008] [The problem the invention aims to solve] Regarding ultrafine bubbles and microbubbles, they are claimed to have a cleansing or warming effect during bathing. However, the aforementioned microbubble supply devices do not control the concentration of ultrafine bubbles and microbubbles in order to control the cleansing or warming effect.

[0009] Then, the aforementioned conventional microbubble supply device is not intended to provide appropriate heating and cleaning effects during bathing according to the user's bathing environment.

[0010] Therefore, in view of the problems of the prior art, the present invention aims to provide a microbubble supply system, a microbubble supply device, and a control method for the microbubble supply system, which can control the generation of ultrafine bubbles and microbubbles in the water supplied to the storage tank according to the user's bathing environment. [Solutions]

[0011] The microbubble supply device according to one embodiment of the present invention is characterized in that: A microbubble supply device supplies water containing microbubbles to a storage tank, and includes: The first temperature sensor measures the temperature of the water stored in the aforementioned storage tank; The pump draws water from the aforementioned storage tank through the inlet of the first piping and discharges the water from the outlet to the second piping. The generator, installed in the aforementioned second piping, supplies water discharged from the aforementioned outlet of the aforementioned pump to the input side, causing the supplied water to generate microbubbles and ultrafine bubbles, and outputs water containing microbubbles, which is intended to be stored in the aforementioned storage tank, from the output side via the output section of the aforementioned second piping; The control device controls the concentration of microbubbles and ultrafine bubbles generated by the water supplied by the generator based on the water temperature measured by the first temperature sensor.

[0012] The aforementioned microbubble supply device is characterized by: Equipped with: a second temperature sensor for measuring the ambient temperature around the aforementioned storage tank; The aforementioned control device is: Based on the ambient temperature measured by the second temperature sensor and the water temperature measured by the first temperature sensor, the concentration of microbubbles and ultrafine bubbles generated by the supplied water by the generator are controlled.

[0013] The aforementioned microbubble supply device is characterized by: The aforementioned first temperature sensor is installed inside the aforementioned first piping to measure the temperature of the water drawn in from the aforementioned storage tank T that flows inside the aforementioned first piping.

[0014] The aforementioned microbubble supply device is characterized by: Furthermore, it features: an electric valve device for adjusting the water volume, which is installed in the aforementioned second piping and connected between the aforementioned pump outlet and the aforementioned water input side of the aforementioned generator, and is controlled by the aforementioned control device, thereby adjusting the water volume supplied from the aforementioned pump to the aforementioned generator; The aforementioned control device is: By using an electric valve device to control the water volume, the water volume supplied from the pump to the generator is adjusted, thereby controlling the concentration of microbubbles and ultrafine bubbles generated by the supplied water.

[0015] The aforementioned microbubble supply device is characterized by: The aforementioned second piping includes: The first branch, one end of which is connected to the first outlet of the aforementioned discharge port of the aforementioned pump, and the other end connected to the output section of the aforementioned second piping; and The second branch has one end connected to the second outlet of the aforementioned outlet of the aforementioned pump, and the other end connected to the other end of the aforementioned first branch; The aforementioned generator includes: A first generator, disposed at the aforementioned first branch, generates ultrafine bubbles from the supplied water and outputs water containing ultrafine bubbles, intended for storage in the aforementioned storage tank, via the aforementioned first branch; and A second generator is disposed at the aforementioned second branch, which generates microbubbles in the supplied water and outputs water containing microbubbles for storage in the aforementioned storage tank via the aforementioned second branch; The aforementioned electric valve device for water volume control includes: A first electric valve is connected between the aforementioned outlet of the pump and the water input side of the first generator, and is controlled by the aforementioned control device to adjust the amount of water supplied from the pump to the first generator; and The second electric valve is connected between the aforementioned outlet of the aforementioned pump and the water input side of the aforementioned second generator, and is controlled by the aforementioned control device to adjust the amount of water supplied from the aforementioned pump to the aforementioned second generator.

[0016] The aforementioned microbubble supply device is characterized by: The aforementioned control device is: The concentration of ultrafine bubbles generated by the water supplied by the first generator is controlled by adjusting the amount of water supplied from the first pump to the first generator; and The concentration of microbubbles generated by the water supplied by the second generator is controlled by adjusting the amount of water supplied from the pump to the second generator.

[0017] The aforementioned microbubble supply device is characterized by: An air volume solenoid valve device is provided, which is connected to the supply passage and controlled to ensure that the air drawn in from the air intake is a predetermined amount. The solenoid valve is controlled by the aforementioned control device to open and close, thereby adjusting the amount of air drawn in from the aforementioned air intake for water supplied to the suction port of the aforementioned pump. The aforementioned control device is: The solenoid valve device controls the air volume, and by adjusting the amount of air injected into the water supplied to the pump inlet, the concentration of microbubbles and ultrafine bubbles generated by the water supplied by the generator is controlled.

[0018] The aforementioned microbubble supply device is characterized by: The aforementioned solenoid valve device for air volume control includes: A first air volume solenoid valve is connected to the aforementioned first piping and is operated by the aforementioned control device to allow air to be drawn in from the first intake port, and the air volume, at a first air volume per unit time, is injected through the aforementioned first piping into the water supplied to the suction port of the aforementioned pump; and The second air volume solenoid valve is connected to the aforementioned first piping and is operated by the aforementioned control device so that air is drawn in from the second air intake. The air volume, which is different from the aforementioned first air volume per unit time, is injected into the water supplied to the suction port of the aforementioned pump through the aforementioned first piping.

[0019] The aforementioned microbubble supply device is characterized by: The aforementioned control device is: The solenoid valve for controlling the first air volume and / or the solenoid valve for controlling the second air volume, and by adjusting the amount of air injected into the water supplied to the pump P per unit time, controls the concentration of microbubbles and ultrafine bubbles generated by the water supplied by the generator.

[0020] The aforementioned microbubble supply device is characterized by: The aforementioned solenoid valve device for air volume control further includes: A third air volume solenoid valve is connected to the aforementioned first piping and is operated by the aforementioned control device so that air is drawn in from the third air intake. The air system, which is a third air volume different from the aforementioned first and second air volumes per unit time, is injected into the water supply to the aforementioned pump intake via the aforementioned first piping.

[0021] The aforementioned microbubble supply device is characterized by: The aforementioned control device is: The device controls at least one of the aforementioned first air volume solenoid valve, the aforementioned second air volume solenoid valve, and the aforementioned third air volume solenoid valve, and controls the concentration of microbubbles and ultrafine bubbles generated by the water supplied by the aforementioned generator by adjusting the amount of air supplied to the aforementioned generator per unit time.

[0022] The aforementioned microbubble supply device is characterized by: It includes: an electric valve device for adjusting the water volume, which is installed on the aforementioned second piping, located on the water output side of the aforementioned generator, and is used to adjust the water volume output from the aforementioned generator and is controlled by the aforementioned control device, thereby adjusting the water volume supplied from the aforementioned pump P to the aforementioned generator; The aforementioned control device is: By using an electric valve device to control the water volume, the water volume supplied from the pump P to the generator is adjusted, thereby controlling the concentration of microbubbles and ultrafine bubbles generated by the water supplied by the generator.

[0023] The aforementioned microbubble supply device is characterized by: The aforementioned control device is: If the water temperature measured by the aforementioned first temperature sensor does not reach the preset water temperature reference value, the concentration of the aforementioned microbubbles generated by the aforementioned generator is controlled to a preset first microbubble concentration, and the concentration of the aforementioned ultrafine bubbles is controlled to a preset first ultrafine bubble concentration; On the other hand, when the water temperature measured by the aforementioned first temperature sensor is above the aforementioned water temperature reference value, the concentration of the aforementioned microbubbles generated by the aforementioned generator is controlled to be a second microbubble concentration that is higher than the aforementioned first microbubble concentration, and the concentration of the aforementioned ultrafine bubbles is controlled to be a second ultrafine bubble concentration that is higher than the aforementioned first ultrafine bubble concentration.

[0024] The aforementioned microbubble supply device is characterized by: The aforementioned control device is: When the water temperature measured by the first temperature sensor S1 is above the aforementioned water temperature reference value, after controlling the concentration of the microbubbles generated by the generator to a second microbubble concentration that is higher than the first microbubble concentration, and controlling the concentration of the ultrafine bubbles to a second ultrafine bubble concentration that is higher than the first ultrafine bubble concentration, The concentration of the aforementioned microbubbles generated by the aforementioned generator is controlled to the aforementioned first microbubble concentration, and the concentration of the aforementioned ultrafine bubbles is controlled to the aforementioned first ultrafine bubble concentration.

[0025] The aforementioned microbubble supply device is characterized by: The aforementioned control device is: If the water temperature measured by the aforementioned first temperature sensor does not reach the preset water temperature reference value, the concentration of the aforementioned microbubbles generated by the aforementioned generator is controlled to a preset first microbubble concentration, and the concentration of the aforementioned ultrafine bubbles is controlled to a preset first ultrafine bubble concentration; On the other hand, when the water temperature measured by the first temperature sensor is above the aforementioned water temperature reference value and the ambient temperature measured by the second temperature sensor is above the aforementioned ambient temperature reference value, the concentration of the microbubbles generated by the generator is controlled to be a second microbubble concentration that is higher than the aforementioned first microbubble concentration, and the concentration of the ultrafine bubbles is controlled to be a second ultrafine bubble concentration that is higher than the aforementioned first ultrafine bubble concentration.

[0026] The aforementioned microbubble supply device is characterized by: The aforementioned control device is: If the water temperature measured by the first temperature sensor S1 is above the aforementioned water temperature reference value, and the ambient temperature measured by the second temperature sensor S2 does not reach the aforementioned ambient temperature reference value, then after controlling the concentration of the microbubbles generated by the generator to a second microbubble concentration that is higher than the concentration of the first microbubble, and controlling the concentration of the ultrafine bubbles to a second ultrafine bubble concentration that is higher than the concentration of the first ultrafine bubble, The concentration of the aforementioned microbubbles generated by the aforementioned generator is controlled to the aforementioned first microbubble concentration, and the concentration of the aforementioned ultrafine bubbles is controlled to the aforementioned first ultrafine bubble concentration.

[0027] The aforementioned microbubble supply device is characterized by: It also features a water temperature adjustment device, controlled by the aforementioned control device, to adjust the temperature of the water stored in the aforementioned storage tank to the target water temperature.

[0028] The aforementioned microbubble supply device is characterized by: It also has an ambient temperature adjustment device, controlled by the aforementioned control device, to adjust the ambient temperature around the aforementioned storage tank to the target ambient temperature.

[0029] The aforementioned microbubble supply device is characterized by: The aforementioned storage tank is a bathtub for users to bathe in.

[0030] The aforementioned microbubble supply device is characterized by: The aforementioned control device includes a storage unit, which stores a table that predefines a combination relating the range of water temperature in the aforementioned storage tank to the concentration of ultrafine bubbles and microbubbles to be generated by the aforementioned generator; The aforementioned control device selects a combination specified in the aforementioned table that corresponds to the aforementioned measured water temperature stored in the aforementioned storage unit, based on the measured water temperature, and controls the concentration of microbubbles and ultrafine bubbles generated by the aforementioned generator from the aforementioned supplied water to a concentration of microbubbles and ultrafine bubbles that corresponds to the aforementioned measured water temperature of the selected combination.

[0031] The aforementioned microbubble supply device is characterized by: The aforementioned control device includes a storage unit, which stores a table that predefines a combination relating the range of water temperature and ambient temperature in the aforementioned storage tank T to the concentration of ultrafine bubbles and microbubbles to be generated by the aforementioned generator. The aforementioned control device selects a combination of the measured water temperature and ambient temperature stored in the aforementioned storage unit, corresponding to the combination specified in the aforementioned table, and controls the concentration of microbubbles and ultrafine bubbles generated by the aforementioned generator from the aforementioned supplied water to a concentration of microbubbles and ultrafine bubbles corresponding to the selected combination of the aforementioned measured water temperature and ambient temperature.

[0032] The microbubble supply system according to one embodiment of the present invention is characterized in that: A microbubble supply system, comprising: Storage tank for storing water used by users for bathing; and A microbubble supply device supplies water containing microbubbles to the aforementioned storage tank; The aforementioned microbubble supply device is equipped with: The first temperature sensor measures the temperature of the water stored in the aforementioned storage tank; The pump draws water from the aforementioned storage tank through the inlet of the first piping and discharges it through the outlet to the second piping. A generator, installed in the aforementioned second piping, supplies water discharged from the aforementioned outlet of the aforementioned pump P to the input side, causing the supplied water to generate microbubbles and ultrafine bubbles, and outputs water containing microbubbles, intended for storage in the aforementioned storage tank, from the output side via the output section of the aforementioned second piping; and The control device controls the concentration of microbubbles and ultrafine bubbles generated by the water supplied by the generator based on the water temperature measured by the first temperature sensor.

[0033] The control method for the microbubble supply system according to one embodiment of the present invention is characterized in that: A control method for a microbubble supply device, wherein the microbubble supply device supplies water containing microbubbles to a storage tank; The aforementioned microbubble supply device is equipped with: The first temperature sensor measures the temperature of the water stored in the aforementioned storage tank; The pump draws water from the aforementioned storage tank through the inlet of the first piping and discharges it through the outlet to the second piping. A generator, installed in the aforementioned second piping, supplies water discharged from the aforementioned outlet of the aforementioned pump to the input side, causing the supplied water to generate microbubbles and ultrafine bubbles, and outputs water containing microbubbles, intended for storage in the aforementioned storage tank, from the output side via the output section of the aforementioned second piping; and Control device; The aforementioned control device controls the concentration of microbubbles and ultrafine bubbles generated by the aforementioned generator from the supplied water based on the water temperature measured by the aforementioned first temperature sensor.

[0034] According to one embodiment of the present invention, a microbubble supply device for supplying water containing microbubbles is characterized in that it comprises: The first temperature sensor measures the temperature of the aforementioned water; The pump draws in the aforementioned water through the inlet of the first piping and discharges the water from the outlet to the second piping. A generator, installed in the aforementioned second piping, supplies water discharged from the aforementioned outlet of the aforementioned pump to the input side, causing the supplied water to generate microbubbles and ultrafine bubbles, and outputs water containing microbubbles from the output side through the output section of the aforementioned second piping; and The control device controls the concentration of microbubbles and ultrafine bubbles generated by the water supplied by the generator based on the water temperature measured by the first temperature sensor.

[0035] The aforementioned microbubble supply device is characterized by: The aforementioned control device initially controls the aforementioned generator to produce microbubbles in the supplied water after the water supply begins, and then controls the aforementioned generator to produce microbubbles and / or ultrafine bubbles. [Effects of the Invention]

[0036] According to one aspect of the microbubble supply system of the present invention, the generation of ultrafine bubbles and microbubbles in the water supplied to the storage tank can be controlled according to the environment during bathing. [A Simple Explanation of the Diagram]

[0037] [Figure 1] is a diagram showing an example of the configuration of a microbubble supply system 100 according to a first embodiment of the present invention. [Figure 2] is a diagram illustrating one example of the control flow of the microbubble supply system 100 shown in Figure 1. [Figure 3] is a diagram showing one example of the configuration of a microbubble supply system 200 according to a second embodiment of the present invention. [Figure 4] is a diagram illustrating one example of the control flow of the microbubble supply system 200 shown in Figure 3. [Figure 5] is a diagram showing one example of the configuration of a microbubble supply system 300 according to a third embodiment of the present invention. [Figure 6] is a diagram illustrating one example of the control flow of the microbubble supply system 200 shown in Figure 5. [Figure 7] is an example of the relationship between the amount of air supplied to the generator G shown in Figure 3 and the concentration of ultrafine bubbles produced by the generator G. [Figure 8] is an example of the relationship between the amount of air supplied to the generator G shown in Figure 3 and the concentration of microbubbles produced by the generator G. [Figure 9] is an example of the test results showing the concentration of ultrafine bubbles and microbubbles generated by the generator, the amount of air supplied to the generator, the cleaning effect, and the heating effect under various conditions. [Figure 10] is an example of the average dirt removal rate under various conditions to confirm the cleaning effect through Dunnett testing. [Figure 11] is an example of the rate of increase in skin temperature of users before and after bathing under various conditions, in order to verify the heating effect through the Dunnett test. [Figure 12] is an example of the distribution of ultrafine bubble concentration and microbubble concentration generated by the generator to achieve cleaning and / or warming effects under various conditions. [Figure 13] is a graph showing various examples of the relationship between the water temperature and ambient temperature of the storage tank and the concentration of ultrafine bubbles and microbubbles controlled under the assumption of cleaning effect and heating effect as targets. [Figure 14] is a graph showing various examples of the relationship between the water temperature of the storage tank and the concentration of ultrafine bubbles and microbubbles controlled under the assumption of a cleaning effect and a warming effect as targets. [Figure 15A] is a diagram showing one example of the configuration of a generator for a microbubble supply device. [Figure 15B] is a schematic diagram of the eddy current generating mechanism of the generator shown in Figure 15A. [Figure 15C] is an example of a preferred configuration of the generator shown in Figure 15A. [Figure 16] is a diagram showing another example of the configuration of a generator for a microbubble supply device. Implementation

[0038] As a premise, in this invention, microbubbles refer to bubbles with a diameter of less than 100 μm. Within this, visible, turbid white bubbles with a diameter of 1 to 100 μm are called microbubbles, and colorless, transparent bubbles with a diameter of less than 1 μm that cannot be seen are called ultrafine bubbles.

[0039] Then, the clear difference between microbubbles and ultrafine bubbles lies in this point: ultrafine bubbles do not scatter visible light, so they cannot be observed directly with the naked eye, while microbubbles can be confirmed by the presence of white turbidity.

[0040] Then, in an embodiment of the present invention, through these ultrafine bubbles and microbubbles, a cleansing effect on the body can be achieved simply by soaking in warm water, and a warming effect can also be provided. This warming effect is necessary in winter, but may be unnecessary in summer as it could cause dizziness. This product is primarily used for bathing and other therapeutic purposes, and the desired effect is achieved within the minimum bathing time.

[0041] Here, the inventors have discovered that although microbubbles, as described above, impart a warming effect, the warming effect becomes the same as that of hot water that does not contain microbubbles, depending on the concentration of the microbubbles.

[0042] Furthermore, the inventors have discovered that while microbubbles, as described above, impart a cleaning effect, the cleaning effect can be as good as that of hot water that does not contain microbubbles, depending on the concentration of the microbubbles.

[0043] Furthermore, the inventors discovered that there exists a minimum concentration of ultrafine bubbles, which is necessary in order to significantly (intentionally) achieve a cleaning effect compared to hot water that does not contain microbubbles.

[0044] Therefore, in the embodiments of the present invention based on the inventors' knowledge as described above, for example, a sensor is used to measure the ambient temperature (air temperature) and the water temperature of the storage tank. When the measured ambient temperature and water temperature are high, the concentration of microbubbles in the storage tank is increased to suppress the heating effect and impart a cleaning effect. On the other hand, when the measured ambient temperature and water temperature are low, the concentration of ultrafine bubbles is maintained above the lower limit while the concentration of microbubbles is controlled below the upper limit. Therefore, by controlling the heating effect and cleaning ability, the system can provide the necessary heating and cleaning effects when the user takes a bath.

[0045] Hereinafter, embodiments of the present invention based on the inventor's knowledge described above will be described based on the drawings.

[0046] (First Implementation) Here, FIG1 is a diagram showing one example of the configuration of a microbubble supply system 100 according to a first embodiment of the present invention. FIG2 is a diagram showing one example of the control flow of the microbubble supply system 100 shown in FIG1.

[0047] [Microbubble Supply System] In this embodiment, the microbubble supply system 100 is configured in a bathroom, such as in a typical home, accommodation facility, or medical facility, for use by a user when bathing.

[0048] The microbubble supply system 100 of the first embodiment shown in Figure 1 includes a storage tank T and a microbubble supply device 101.

[0049] [Storage Slot T] Then, the storage tank T is, for example, a bathtub used to store water (warm water) for a user to bathe in. Furthermore, if necessary, the storage tank T can be omitted from the microbubble supply system 100. In this case, the microbubble supply device 101, which supplies water directly from a faucet or similar source to the microbubble supply system 100, can also supply water containing microbubbles from the microbubble supply device 101 to appliances such as shower heads.

[0050] [Microbubble supply device] The microbubble supply device 101 supplies water containing microbubbles to the storage tank T.

[0051] Then, the microbubble supply device 101 includes, for example, a first pipe L1, a second pipe L2, a first temperature sensor S1 as a water temperature sensor, a second temperature sensor S2 as an ambient temperature sensor, a pump P, a generator G, a water flow electric valve device V, a water temperature adjustment device Y, an ambient temperature adjustment device K, and a control device CNT.

[0052] Thus, in this embodiment, although the microbubble supply device 101 includes a water temperature adjustment device Y and an ambient temperature adjustment device K, as a different configuration from the microbubble supply device 101, the water temperature adjustment device Y and / or the ambient temperature adjustment device K may also be included in the microbubble supply system 100.

[0053] The components of the microbubble supply device 101 will be described in detail below.

[0054] [First Piping] The first piping L1 is connected between the storage tank T and the suction port Pin of the pump P, and is used to deliver the water stored in the storage tank T to the suction port of the pump P.

[0055] [Second piping] The second piping L2 is connected between the outlet of pump P and the storage tank T, and is used to deliver water containing microbubbles discharged from the outlet Po of pump P to the storage tank T. Furthermore, as described later, a water flow electric valve device V or a generator G is installed along the second piping L2.

[0056] In this embodiment, as shown in FIG1, the second pipe L2 includes, for example, a first branch L2a and a second branch L2b.

[0057] Moreover, as shown in Figure 1, the first branch L2a is, for example, connected at one end to the first outlet Po1 in the outlet Po of the pump P, and at the other end to the output Lout of the second pipe L2.

[0058] Furthermore, as shown in Figure 1, the second branch L2b is, for example, connected at one end to the second outlet Po2 in the outlet Po of pump P, and at the other end to the other end of the first branch L2a and the output Lout of the second pipe L2.

[0059] [Pump P] As shown in Figure 1, pump P is controlled by, for example, control device CNT. It draws water stored in storage tank T through the inlet Pin of the first pipe L1 via the inlet Lin, and discharges the drawn water from the outlet Po to the second pipe L2.

[0060] [Generator] Generator G is installed in the second piping L2. Generator G is configured such that water discharged from the outlet Po of pump P is supplied to the input side.

[0061] Then, the generator G generates microbubbles and ultrafine bubbles in the supply water (a mixture of water and air) containing air, and outputs the water containing microbubbles, which is intended to be stored in the storage tank T, from the output side via the output section Lout of the second pipe L2.

[0062] Furthermore, as an additional component, the generator G can also adjust the amount of air contained in the supplied water via a solenoid valve (not shown), thereby adjusting the concentration (number) of microbubbles and the concentration (number) of ultrafine bubbles. In this case, for example, the control device CNT system can also adjust the amount of air contained in the supplied water by controlling the solenoid valve, thereby adjusting the concentration of microbubbles and ultrafine bubbles.

[0063] For example, as shown in Figure 1, the generator G includes a first generator G1 and a second generator G2.

[0064] Then, for example, as shown in FIG1, a first generator G1 is provided at a first branch L2a. The first generator G1 generates ultrafine bubbles from supplied water (a mixture of water and air) containing air, and outputs the water containing ultrafine bubbles to a storage tank T via the first branch L2a.

[0065] In addition, the first generator G1 can also adjust the amount of air contained in the supplied water through a solenoid valve (not shown), thereby adjusting the concentration (number) of ultrafine bubbles.

[0066] Furthermore, for example, as shown in FIG1, a second generator G2 is provided at the second branch L2b. This second generator G2 generates microbubbles from supplied water (a mixture of water and air) containing air, and outputs the water containing microbubbles to the storage tank T via the second branch L2b.

[0067] In addition, the second generator G2 can also adjust the amount of air contained in the supplied water through a solenoid valve (not shown), thereby adjusting the concentration (number) of microbubbles.

[0068] [Electric valve device for water volume control] For example, as shown in Figure 1, an electric valve device V for water flow is installed on the second piping L2. This electric valve device V for water flow is connected between the outlet Po of pump P and the water input side of generator G.

[0069] The water flow rate is controlled by the electric valve device V, which is controlled by the control device CNT to adjust the water flow rate supplied from pump P to generator G per unit time. In other words, the control device CNT controls the water flow rate via the electric valve device V to adjust the water flow rate supplied from pump P to generator G per unit time, thereby controlling the concentration (number) of microbubbles and the concentration (number) of ultrafine bubbles generated by the water supplied by generator G.

[0070] For example, as shown in Figure 1, the electric valve device V for water volume control includes a first electric valve V1 and a second electric valve V2.

[0071] Then, the first electric valve V1 is connected between the outlet Po of pump P and the water input side of the first generator G1.

[0072] The first electric valve V1 is controlled by the control device CNT, thereby adjusting the amount of water supplied from pump P to the first generator G1. That is, the control device CNT controls the first electric valve V1 to adjust the amount of water supplied from pump P to the first generator G1 per unit time, thereby controlling the concentration (number) of ultrafine bubbles generated by the water supplied by the first generator G1.

[0073] Furthermore, the second electric valve V2 is connected between the outlet Po of pump P and the water input side of the second generator G2.

[0074] The second electric valve V2 is controlled by the control device CNT, thereby adjusting the amount of water supplied from pump P to the second generator G2 per unit time. That is, the control device CNT controls the second electric valve V2 to adjust the amount of water supplied from pump P to the second generator G2 per unit time, thereby controlling the concentration (number) of microbubbles generated by the water supplied by the second generator G2.

[0075] Thus, by controlling the water volume through the control device CNT using the electric valve device V (first and second electric valves V1 and V2), the water volume supplied to the generator G (first and second generators G1 and G2) can be adjusted, thereby adjusting the concentration of microbubbles and ultrafine bubbles in the water supplied from the second pipe L2 to the storage tank T.

[0076] [First temperature sensor] The first temperature sensor S1 is a water temperature sensor that measures the temperature of the water stored in the storage tank T.

[0077] For example, as shown in Figure 1, the first temperature sensor S1 is installed inside the first piping L1. Then, the first temperature sensor S1 measures the temperature of the water drawn from the storage tank T flowing inside the first piping L1 as the water temperature of the water stored in the storage tank T.

[0078] Furthermore, the first temperature sensor S1 can also be installed on the storage tank T. In this case, the first temperature sensor S1 directly measures the temperature of the water stored in the storage tank T.

[0079] [Water temperature adjustment device] The water temperature adjustment device Y is controlled by the control device CNT, which adjusts the temperature of the water stored in the storage tank T to the target water temperature.

[0080] Then, the control device CNT can also control the water temperature adjustment device Y based on the water temperature measured by the first temperature sensor S1, and adjust the temperature of the water stored in the storage tank T to the target water temperature.

[0081] Furthermore, for example, the water temperature adjustment device Y can adjust the water temperature by heating the water stored in the storage tank T to raise the water temperature to the target water temperature.

[0082] On the other hand, for example, the water temperature adjustment device Y can adjust the water temperature drop by adding water at a lower temperature to the storage tank T when the water temperature in the storage tank T drops to the target water temperature.

[0083] Furthermore, as mentioned above, in this embodiment, although the water temperature adjustment device Y is included in the microbubble supply device 101, it can also be separately provided from the microbubble supply device 101.

[0084] [Second temperature sensor] The second temperature sensor S2 is an ambient temperature sensor that measures the ambient temperature of the gas surrounding the storage tank T, for example, the temperature inside a bathroom equipped with a microbubble supply system 100.

[0085] [Ambient temperature control device] The ambient temperature adjustment device K is controlled by the control device CNT to adjust the ambient temperature around the storage tank T (e.g., the temperature in a bathroom equipped with a microbubble supply system 100) to the target ambient temperature.

[0086] Then, the control device CNT can also control the ambient temperature adjustment device K based on the ambient temperature measured by the second temperature sensor S2, and adjust the ambient temperature around the storage tank T (e.g., the temperature in a bathroom equipped with a microbubble supply system 100) to the target ambient temperature.

[0087] Furthermore, as mentioned above, in this embodiment, although the ambient temperature adjustment device K is included in the microbubble supply device 101, it can also be provided separately from the microbubble supply device 101.

[0088] [Control Device] The control device CNT controls the concentration (number) of microbubbles and the concentration (number) of ultrafine bubbles generated by the supplied water from the generator G, based at least on the water temperature measured by the first temperature sensor S1.

[0089] In particular, in this embodiment, the control device CNT controls the concentration (number) of microbubbles and the concentration (number) of ultrafine bubbles generated by the supplied water from the generator G based on the ambient temperature measured by the second temperature sensor S2 and the water temperature measured by the first temperature sensor S1.

[0090] For example, as shown in Figure 1, the control device CNT adjusts the water volume supplied from pump P to generator G by using an electric valve device V to control the water volume, thereby controlling the concentration of microbubbles and ultrafine bubbles generated by generator G in the supplied water.

[0091] More specifically, for example, as shown in Figures 1 and 2, the control device CNT adjusts the amount of water supplied from pump P to the first generator G1 by controlling the first electric valve V1, thereby controlling the concentration (number) of ultrafine bubbles generated by the first generator G1 in the supplied water.

[0092] Furthermore, for example, as shown in Figures 1 and 2, the control device CNT adjusts the amount of water supplied from pump P to the second generator G2 by controlling the second electric valve V2, thereby controlling the concentration (number) of microbubbles generated by the second generator G2 in the supplied water.

[0093] Then, the control device CNT controls the generator G to adjust the concentration of microbubbles and ultrafine bubbles generated in the supplied water based on the ambient temperature measured by the second temperature sensor S2 and the water temperature measured by the first temperature sensor S1.

[0094] Here, for example, as shown in Figure 1, the control device CNT includes a storage unit M.

[0095] Then, the storage unit M stores the program executed by the control device CNT, as well as the data necessary for that processing. The storage unit M also temporarily stores the measured water temperature or ambient temperature data. This storage unit M is, for example, a non-volatile memory (readable storage medium) such as NAND flash memory.

[0096] In particular, the storage unit M stores a table that at least predefines a combination relating the water temperature range of the storage tank T to the concentration of ultrafine bubbles and microbubbles to be generated by the generator G.

[0097] In this case, the control device CNT selects the combination specified in the table corresponding to the measured water temperature stored in the storage unit M based on the measured water temperature, and controls the concentration of microbubbles and ultrafine bubbles generated by the generator G in the supplied water to be the concentration of microbubbles and ultrafine bubbles corresponding to the measured water temperature of the selected combination.

[0098] Furthermore, the storage unit M can also store a table, which is a pre-defined combination that establishes a relationship between the range of water temperature and ambient temperature in the storage tank T and the concentration of ultrafine bubbles and microbubbles to be generated by the generator G.

[0099] In this case, the control device CNT can also select the combination specified in the table corresponding to the measured water temperature and ambient temperature stored in the storage unit M based on the measured water temperature and ambient temperature, and control the concentration of microbubbles and ultrafine bubbles generated by the generator G in the supplied water to be the concentration of microbubbles and ultrafine bubbles corresponding to the measured water temperature and ambient temperature of the selected combination.

[0100] Furthermore, as mentioned above, the control device CNT can also adjust the temperature of the water stored in the storage tank T to the target water temperature by controlling the water temperature adjustment device Y.

[0101] In this case, for example, the control device CNT adjusts the temperature of the water stored in the storage tank T to the target water temperature by controlling the water temperature adjustment device Y. At the same time, based on the measured water temperature and ambient temperature, the concentration of microbubbles and ultrafine bubbles generated by the generator G in the supplied water is controlled to be the concentration of microbubbles and ultrafine bubbles selected from the combination specified in the table stored in the storage unit M, corresponding to the measured water temperature and ambient temperature.

[0102] Furthermore, as mentioned above, the control device CNT can also adjust the ambient temperature around the storage tank T (e.g., the temperature in a bathroom equipped with a microbubble supply system 100) to the target ambient temperature by controlling the ambient temperature adjustment device K.

[0103] In this case, for example, the control device CNT can also adjust the ambient temperature around the storage tank T to the target ambient temperature by controlling the ambient temperature adjustment device K. At the same time, based on the measured water temperature and ambient temperature, the concentration of microbubbles and ultrafine bubbles generated by the generator G in the supplied water is controlled to be the concentration of microbubbles and ultrafine bubbles selected from the combination specified in the table stored in the storage unit M, corresponding to the measured water temperature and ambient temperature.

[0104] Then, for example, in the microbubble supply device 101 according to the first embodiment, by using the relationship between the cleaning effect and the heating effect and the concentration of ultrafine bubbles and microbubbles shown in FIG12 of the embodiment described later, and storing it in the storage unit M, for example, by measuring the ambient temperature (air temperature) and the water temperature of the storage tank T with a sensor, when the measured ambient temperature and water temperature are high, the concentration of microbubbles in the storage tank T is increased to above the threshold MBD1 and the concentration of ultrafine bubbles is controlled above the threshold UFBD2, so as to suppress the heating effect while giving a cleaning effect. On the other hand, when the measured ambient temperature and water temperature are low, in order to obtain the heating effect and the cleaning effect, the concentration of ultrafine bubbles in the storage tank T can be maintained above the threshold UFBD2 while the concentration of microbubbles is controlled below the threshold MBD1. Therefore, by controlling the heating effect and cleaning ability, the system can provide the necessary heating and cleaning effects when the user takes a bath.

[0105] That is, the microbubble supply system 100 according to this first embodiment can appropriately provide a warming effect and a cleaning effect to the user in the bath according to the environment when the user is taking a bath.

[0106] (Second Implementation) Here, FIG3 is a diagram showing one example of the configuration of the microbubble supply system 200 according to a second embodiment of the present invention. FIG4 is a diagram showing one example of the control flow of the microbubble supply system 200 shown in FIG3.

[0107] [Microbubble Supply System] In this embodiment, the microbubble supply system 200 is also configured in a bathroom, such as in a typical home, accommodation facility, or medical facility, for use by a user when bathing.

[0108] The microbubble supply system 200 of the second embodiment shown in Figure 3 includes a storage tank T and a microbubble supply device 201.

[0109] [Storage Slot T] Then, the storage tank T is, for example, a bathtub used to store water (warm water) for a user to bathe in.

[0110] [Microbubble supply device] The microbubble supply device 201 supplies water containing microbubbles to the storage tank T.

[0111] Then, the microbubble supply device 201 includes, for example: a first pipe L1, a second pipe L2, a first temperature sensor S1 as a water temperature sensor, a second temperature sensor S2 as an ambient temperature sensor, a pump P, a generator G, an air volume solenoid valve device Z, a control device CNT, a water temperature adjustment device Y, and an ambient temperature adjustment device K.

[0112] Thus, the microbubble supply device 201 according to this embodiment differs from the microbubble supply device 101 of the first embodiment in that it has an air volume solenoid valve device Z instead of a water volume electric valve device V.

[0113] Furthermore, although the microbubble supply device 201 in this embodiment includes a water temperature adjustment device Y and an ambient temperature adjustment device K, as a different configuration from the microbubble supply device 201, the water temperature adjustment device Y and / or the ambient temperature adjustment device K may also be included in the microbubble supply system 200.

[0114] [Solenoid valve device for air volume control] The air volume solenoid valve Z of the microbubble supply device 201 is connected to the supply passage and is controlled to ensure that the air drawn in from the intake port is a predetermined amount.

[0115] The air volume is controlled by the solenoid valve device Z, which is controlled by the control device CNT to open and close, thereby adjusting the amount of air injected into the water supplied to the suction port Pin of the pump P and the amount of air drawn in from the suction port.

[0116] The control device CNT adjusts the amount of air injected into the water supplied to the suction port Pin of the pump P by using a solenoid valve device Z to control the amount of air, thereby controlling the concentration of microbubbles and ultrafine bubbles generated by the generator G in the supplied water.

[0117] For example, as shown in Figure 3, the air volume solenoid valve device Z includes a first air volume solenoid valve Z1, a second air volume solenoid valve Z2, and a third air volume solenoid valve Z3.

[0118] For example, as shown in Figure 3, the first air volume solenoid valve Z1 is connected to the first piping L1. For example, as shown in Figures 3 and 4, the first air volume solenoid valve Z1 is controlled by the control device CNT to open and close, so that air is drawn in from the first air intake Zin1, and air of a first air volume A1 per unit time is injected into the water supplied to the suction port Pin of the pump P via the first piping L1.

[0119] Furthermore, for example, as shown in Figure 3, the second air volume solenoid valve Z2 is connected to the first piping L1. For example, as shown in Figures 3 and 4, the second air volume solenoid valve Z2 is controlled by the control device CNT to open and close, so that air is drawn in from the second air intake Zin2, and a second air volume A2, which is different from the first air volume A1 (more than the first air volume A1), is injected into the water supplied to the suction port Pin of the pump P via the first piping L1.

[0120] Furthermore, for example, as shown in Figure 3, the third air volume solenoid valve Z3 is connected to the first piping L1. For example, as shown in Figures 3 and 4, the third air volume solenoid valve Z3 is controlled by the control device CNT to open and close, so that air is drawn in from the third intake port Zin3, and a third air volume A3 (which is different from the first and second air volumes A1 and A2) is injected into the water supplied to the intake port Pin of the pump P via the first piping L1.

[0121] Then, for example, as shown in Figure 4, the control device CNT controls at least the first air volume solenoid valve Z1 and / or the second air volume solenoid valve Z2, thereby controlling the concentration of microbubbles and ultrafine bubbles generated by the generator G in the supplied water by adjusting the amount of air injected into the water supplied to the pump P per unit time.

[0122] In particular, for example, as shown in Figure 4, the control device CNT is at least one of the solenoid valves Z1, Z2, and Z3 for controlling the first air volume, thereby controlling the concentration of microbubbles and ultrafine bubbles generated by the generator G in the supplied water by adjusting the amount of air supplied to the generator G per unit time.

[0123] Furthermore, the other configurations of the microbubble supply system 200 according to this second embodiment are the same as those of the first embodiment described above.

[0124] Then, for example, in the microbubble supply device 201 according to the second embodiment, by using the relationship between the cleaning effect and the heating effect and the concentration of ultrafine bubbles and microbubbles shown in FIG12 of the embodiment described later, and storing it in the storage unit M, for example, by measuring the ambient temperature (air temperature) and the water temperature of the storage tank T with a sensor, when the measured ambient temperature and water temperature are high, the concentration of microbubbles in the storage tank T is increased to above the threshold MBD1 and the concentration of ultrafine bubbles is controlled above the threshold UFBD2, so as to suppress the heating effect while giving a cleaning effect. On the other hand, when the measured ambient temperature and water temperature are low, in order to obtain the heating effect and the cleaning effect, the concentration of ultrafine bubbles in the storage tank T can be maintained above the threshold UFBD2 while the concentration of microbubbles is controlled below the threshold MBD1. Therefore, by controlling the heating effect and cleaning ability, the system can provide the necessary heating and cleaning effects when the user takes a bath.

[0125] That is, the microbubble supply system 200 according to this second embodiment can appropriately provide warmth and cleansing effects to the user during bathing, depending on the environment of the user.

[0126] (Third Implementation) Here, FIG5 is a diagram showing one example of the configuration of the microbubble supply system 300 according to a third embodiment of the present invention. FIG6 is a diagram showing one example of the control flow of the microbubble supply system 200 shown in FIG5.

[0127] [Microbubble Supply System] In this embodiment, the microbubble supply system 300 is also configured in a bathroom, such as in a typical home, accommodation facility, or medical facility, for use by a user when bathing.

[0128] The microbubble supply system 300 of the third embodiment shown in Figure 5 includes a storage tank T and a microbubble supply device 301.

[0129] [Storage Slot T] Then, the storage tank T is, for example, a bathtub used to store water (warm water) for a user to bathe in.

[0130] [Microbubble supply device] The microbubble supply device 301 supplies water containing microbubbles to the storage tank T.

[0131] Then, the microbubble supply device 301 includes, for example, a first pipe L1, a second pipe L2, a first temperature sensor S1 as a water temperature sensor, a second temperature sensor S2 as an ambient temperature sensor, a pump P, a generator G, a water flow electric valve device V300, a water temperature adjustment device Y, an ambient temperature adjustment device K, and a control device CNT.

[0132] Thus, the microbubble supply device 301 according to this third embodiment is equipped with a water volume electric valve device V300 in the same way as the microbubble supply device 101 of the first embodiment.

[0133] Furthermore, although the microbubble supply device 301 in this embodiment includes a water temperature adjustment device Y and an ambient temperature adjustment device K, as a different configuration from the microbubble supply device 301, the water temperature adjustment device Y and / or the ambient temperature adjustment device K may also be included in the microbubble supply system 200.

[0134] For example, as shown in Figure 5, a water flow electric valve device V300 is installed on the second piping L2. This water flow electric valve device V300 is located on the water output side of the generator G, and is used to adjust the water flow output from the generator G. It is controlled by the control device CNT, thereby adjusting the water flow supplied from the pump P to the generator G.

[0135] Thus, the electric valve device V300 for water volume of the microbubble supply device 301 according to this third embodiment is different from the electric valve device V for water volume of the microbubble supply device 101 according to the first embodiment in terms of the location where it is installed.

[0136] Then, for example, as shown in Figures 5 and 6, the control device CNT adjusts the water volume supplied from pump P to generator G (adjusting the pressure applied to generator G) by using an electric valve device V300 to control the water volume, thereby controlling the concentration of microbubbles and ultrafine bubbles generated by generator G in the supplied water.

[0137] Furthermore, the other configurations of the microbubble supply system 300 according to this third embodiment are the same as those of the first embodiment described above.

[0138] Then, for example, in the microbubble supply device 301 according to the present third embodiment, by using the relationship between the cleaning effect and the heating effect and the concentration of ultrafine bubbles and microbubbles shown in FIG12 of the embodiment described later, and storing it in the storage unit M, for example, by using a sensor to measure the ambient temperature (air temperature) and the water temperature of the storage tank T, when the measured ambient temperature and water temperature are high, the concentration of microbubbles in the storage tank T is increased to above the threshold MBD1 and the concentration of ultrafine bubbles is controlled above the threshold UFBD2, so as to suppress the heating effect while giving a cleaning effect. On the other hand, when the measured ambient temperature and water temperature are low, in order to obtain the heating effect and the cleaning effect, the concentration of ultrafine bubbles in the storage tank T can be maintained above the threshold UFBD2 while the concentration of microbubbles is controlled below the threshold MBD1. Therefore, by controlling the heating effect and cleaning ability, the system can provide the necessary heating and cleaning effects when the user takes a bath.

[0139] That is, the microbubble supply system 300 according to this third embodiment can appropriately provide warmth and cleansing effects to the user during bathing, depending on the environment of the user.

[0140] (Example) [Control method for microbubble supply device] Here, a more specific embodiment of the control method for the microbubble supply device according to the above embodiments will be described. The following will describe, as an example, the control flow of the microbubble supply device 201 according to the second embodiment shown in FIG3, specifically the control flow in which the concentration of microbubbles is controlled by adjusting the air volume, so as to provide a warming effect and a cleaning effect according to the user's bathing environment. Furthermore, although the configuration for controlling the concentration of microbubbles differs from that of the second embodiment, the control flow for controlling the concentration of microbubbles in order to provide a warming effect and a cleaning effect for the microbubble supply devices 101 and 301 according to the first and third embodiments will be described in the same way.

[0141] Here, Figure 7 is a graph showing one example of the relationship between the amount of air supplied to the generator G shown in Figure 3 and the concentration of ultrafine bubbles produced by the generator G. Furthermore, Figure 8 is a graph showing one example of the relationship between the amount of air supplied to the generator G shown in Figure 3 and the concentration of microbubbles produced by the generator G.

[0142] For example, as shown in Figure 7, by adjusting the amount of air supplied to generator G per unit time, the concentration of ultrafine bubbles generated by generator G in the supplied water can be controlled within the range of 2.0E+7 (bubbles / mL) to 6.2E+7 (bubbles / mL).

[0143] Furthermore, as shown in Figure 8, by adjusting the amount of air supplied to the generator G per unit time, the concentration of ultrafine bubbles generated by the generator G in the supplied water can be controlled within the range of 2.0E+7 (bubbles / mL) to 6.2E+7 (bubbles / mL).

[0144] That is, as shown in Figures 7 and 8, in the microbubble supply device 201 according to the second embodiment shown in Figure 3, the control device CNT can, for example, adjust the amount of air supplied to the generator G per unit time within the range of 20 mL to 140 mL by controlling at least one of the first air volume solenoid valve Z1, the second air volume solenoid valve Z2, and the third air volume solenoid valve Z3. In this way, the generator G can control the concentration of microbubbles generated in the supplied water within the range of 5446.9 (bubbles / mL) to 15155.7 (bubbles / mL) while controlling the concentration of ultrafine bubbles within the range of 2.0E+7 (bubbles / mL) to 6.2E+7 (bubbles / mL).

[0145] Therefore, by controlling the warming effect and cleansing ability of the human body, the warming effect and cleansing effect are provided as necessary according to the bathing environment.

[0146] Furthermore, as mentioned above, in the microbubble supply device 101 according to the first embodiment shown in FIG1, the control device CNT controls the concentration (number) of ultrafine bubbles generated by the first generator G1 in the supplied water by controlling the first electric valve V1, and controls the second electric valve V2 to adjust the amount of water supplied from the pump P to the second generator G2, thereby controlling the concentration (number) of microbubbles generated by the second generator G2 in the supplied water.

[0147] Furthermore, as mentioned above, in the microbubble supply device 301 according to the third embodiment shown in FIG5, the control device CNT can adjust the amount of water supplied from the pump P to the generator G (adjust the pressure applied to the generator G) by means of the electric valve device V300 for controlling the water volume, thereby controlling the concentration of microbubbles and ultrafine bubbles generated by the generator G in the supplied water.

[0148] Here, Figure 9 is an example of the test results showing the concentration of ultrafine bubbles and microbubbles generated by the generator, the amount of air supplied to the generator, the cleaning effect, and the heating effect under various conditions. Figure 10 is an example of the average removal rate of simulated dirt under various conditions to confirm the cleaning effect through Dunnett testing. Furthermore, Figure 11 is an example of the rate of increase in the user's skin temperature before and after bathing under various conditions to confirm the heating effect through Dunnett testing. Furthermore, Figure 12 is an example of the distribution of ultrafine bubble and microbubble concentrations generated by the generator to obtain cleaning and / or heating effects under various conditions.

[0149] [Experimental Methods] Regarding the cleaning effect test, in a 200L hot water tank (bathtub) T, ultrafine bubbles and microbubbles of various concentrations were generated. Users bathed for 5 minutes while bathing, and the amount of oleic acid adhering before and after bathing was compared. Regarding the reduction in amount, a Dunnett test was performed using boiled water as a baseline; significant differences were considered indicative of a cleaning effect.

[0150] In a 200L hot water storage tank (bathtub) T, ultrafine bubbles and microbubbles of varying concentrations are generated. The user bathes for 5 minutes, and the temperature difference before and after bathing is recorded. A Dunnett test is performed using boiled water as a reference; those showing significant differences are defined as having a warming effect.

[0151] Here, in the measurement of microbubble concentration, Shimadzu's SALD-7500nano was used to measure bubbles ranging from 1 μm to 200 μm. Furthermore, in the measurement of ultrafine bubble concentration, Malvern's Nanosight NS300 was used. Both measurements were performed using a one-pass method.

[0152] Furthermore, the conditions NW shown in Figures 9 to 11 are the results of tests conducted on boiled water that does not contain microbubbles. Then, conditions 1) to 5) are the results of experiments conducted using the same microbubble supply device as shown in Figure 3, which controls the concentration of microbubbles by adjusting the air volume. Furthermore, condition 6) is the result of experiments conducted using a microbubble supply device that only generates microbubbles. Furthermore, condition 7) is the result of an experiment conducted using a microbubble supply device as shown in Figure 1, which is equipped with both an ultrafine bubble generator and a microbubble generator. Furthermore, conditions 8) to 10) are the results of experiments conducted using three different microbubble supply devices, as shown in Figure 3, which control the concentration of microbubbles by adjusting the air volume.

[0153] Furthermore, in Figure 12, "1" indicates a significant cleaning and warming effect. Also, in Figure 12, "2" indicates a particularly high cleaning effect (removal rate more than three times that of plain water). Furthermore, in Figure 12, "0" indicates a cleaning and warming effect similar to that of plain water without microbubbles.

[0154] For example, as shown in Figure 12, if the concentration of microbubbles does not reach the preset first MB concentration threshold MBD1 (approximately 8000 bubbles / mL), and the concentration of ultrafine bubbles is above the preset first UFB concentration threshold UFBD1 (approximately 20 million bubbles / mL), then a warming effect can be achieved (for example, condition 1 in Figure 9).

[0155] Furthermore, for example, as shown in Figure 12, even if the concentration of ultrafine bubbles is above the preset first UFB concentration threshold UFBD1 (approximately 20 million bubbles / mL), the cleaning and warming effects will be the same as those of boiled water if the concentration of microbubbles is above the preset first MB concentration threshold MBD1 (approximately 8000 bubbles / mL) (for example, condition 2 in Figure 9).

[0156] Furthermore, as shown in Figure 12, if the concentration of the second MB (MBD2) is higher than the first MB concentration threshold (MBD1) (approximately 17,000 bubbles / mL), and the concentration of the ultrafine bubbles is higher than the first UFB concentration threshold (UFBD1) (approximately 37 million bubbles / mL), then the cleaning effect can be achieved (e.g., conditions 3-5 and 8-10 in Figure 9).

[0157] Furthermore, the cleaning effect is particularly suitable if the concentration of the second MB concentration threshold MBD2 (approximately 17,000 bubbles / mL), which is higher than the first MB concentration threshold MBD1, and the concentration of the ultrafine bubbles is higher than the third UFB concentration threshold UFBD3 (approximately 55 million bubbles / mL), which is higher than the second UFB concentration threshold UFBD2 (for example, conditions 4 and 5 in Figure 9).

[0158] Furthermore, as shown in Figure 12, even if the concentration of ultrafine bubbles is above the second UFB concentration threshold UFBD2 (approximately 37 million bubbles / mL), if the concentration of microbubbles exceeds the second MB concentration threshold MBD2 (approximately 17,000 bubbles / mL), the cleaning and heating effects will not be achieved (for example, condition 7 in Figure 9).

[0159] Furthermore, as shown in Figure 12, even if the second MB concentration threshold MDB2 (approximately 17,000 molecules / mL) is not reached in the microbubble monomer, the cleaning effect will be the same as that of boiled water (e.g., condition 6 in Figure 9).

[0160] [Control Sequence] Here, examples of the concentration of ultrafine and microbubbles, the relationship between the cleaning and heating effects, and the hypothesized control sequences will be explained based on the above experimental results.

[0161] Figure 13 shows various examples of the relationship between the water temperature and ambient temperature of the storage tank and the concentration of ultrafine bubbles and microbubbles controlled under the assumption of achieving the desired cleaning and warming effects.

[0162] As mentioned above, the storage unit M of the control device CNT can also store a table as shown in Figure 13. This table is a pre-defined combination that establishes a relationship between the water temperature and ambient temperature range of the storage tank T and the concentration of ultrafine bubbles and microbubbles to be generated by the generator G. For example, as shown in Figure 13, the control device CNT, based on the combination specified in the table, controls the concentration of microbubbles generated by generator G to a preset first microbubble concentration (6765.4 bubbles / mL in the example of Figure 14) and the concentration of ultrafine bubbles to a preset first ultrafine bubble concentration (4.2E+07 bubbles / mL in the example of Figure 13) when the water temperature measured by the first temperature sensor S1 does not reach the preset water temperature reference value (e.g., 40°C). (Control 4)

[0163] On the other hand, as shown in Figure 13, the control device CNT, based on the combination specified in the table, controls the concentration of microbubbles generated by generator G to a second microbubble concentration that is higher than the first microbubble concentration (5.7E+07 bubbles / mL in the example of Figure 13) and the concentration of ultrafine bubbles to a second ultrafine bubble concentration that is higher than the first ultrafine bubble concentration (9427.2 bubbles / mL in the example of Figure 13) when the water temperature measured by the first temperature sensor S1 is above the water temperature reference value and the ambient temperature measured by the second temperature sensor S2 is above the ambient temperature reference value (e.g., 25°C). (Control 1) Therefore, one can take a bath in a short time (e.g., 3 minutes) with no heat effect and the highest cleaning effect.

[0164] Furthermore, as shown in Figure 13, the control device CNT, based on the combination specified in the table, controls the concentration of microbubbles generated by generator G to a second microbubble concentration that is higher than the first microbubble concentration (6765.4 bubbles / mL in the example of Figure 13) and the concentration of ultrafine bubbles to a second ultrafine bubble concentration that is higher than the first ultrafine bubble concentration (4.2E+07 bubbles / mL in the example of Figure 13) when the water temperature measured by the first temperature sensor S1 is above the water temperature reference value (40℃~42℃) and the ambient temperature measured by the second temperature sensor S2 is around the ambient temperature reference value (e.g. 25℃). (Control 3)

[0165] In particular, as shown in Figure 13, the control device CNT, based on the combination specified in the table, controls the concentration of microbubbles generated by generator G to a second microbubble concentration (in the example of Figure 13, 5.7E+07 bubbles / mL), which is higher than the first microbubble concentration, and the concentration of ultrafine bubbles to a second ultrafine bubble concentration (in the example of Figure 13, 9427.2 bubbles / mL), which is higher than the first ultrafine bubble concentration (control 2A). Then, it controls the concentration of microbubbles generated by generator G to the first microbubble concentration (in the example of Figure 13, 6765.4 bubbles / mL), and the concentration of ultrafine bubbles to the first ultrafine bubble concentration (in the example of Figure 13, 4.2E+07 bubbles / mL) (control 2B).

[0166] Furthermore, in low ambient temperatures, the duration of the warming effect (the duration of control 2B) will be shortened in order to mitigate the drop in blood pressure after bathing.

[0167] As described above, the control device CNT selects a combination specified in the table corresponding to the measured water temperature and ambient temperature stored in the storage unit M based on the measured water temperature and ambient temperature, and controls the concentration of microbubbles and ultrafine bubbles generated by the generator G in the supplied water to be the concentration of microbubbles and ultrafine bubbles corresponding to the measured water temperature and ambient temperature of the selected combination.

[0168] Furthermore, the control device CNT can also control the concentration of microbubbles and ultrafine bubbles based at least on the measured water temperature. Therefore, Figure 14 is a graph showing various examples of the relationship between the water temperature of the storage tank and the concentration of ultrafine bubbles and microbubbles controlled under the assumption of a cleaning effect and a warming effect as targets.

[0169] For example, as shown in Figure 14, the control device CNT controls the concentration of microbubbles generated by generator G to a preset first microbubble concentration (6765.4 bubbles / mL in the example of Figure 14) and the concentration of ultrafine bubbles to a preset first ultrafine bubble concentration (4.2E+07 bubbles / mL in the example of Figure 14) when the water temperature measured by the first temperature sensor S1 does not reach the preset water temperature reference value (e.g., 40°C). For example, if the water temperature is below 38℃, the water temperature is low, providing both a cleansing and warming effect. To keep the body warm, the bathing time can be extended (5 minutes). In addition, when the water temperature is below 38℃~40℃, the slightly lower water temperature provides both a cleaning effect and a warming effect, which can shorten the bathing time (4 minutes).

[0170] On the other hand, as shown in Figure 14, when the water temperature measured by the first temperature sensor S1 is above the water temperature reference value (e.g., 42°C), the control device CNT controls the concentration of microbubbles generated by the generator G to a second microbubble concentration that is higher than the first microbubble concentration (9427.2 bubbles / mL in the example of Figure 14), and controls the concentration of ultrafine bubbles to a second ultrafine bubble concentration that is higher than the first ultrafine bubble concentration (5.7E+07 bubbles / mL in the example of Figure 14). Thus, when the water temperature is high, it does not provide a warming effect, but only a cleaning effect.

[0171] In particular, as shown in Figure 14, when the water temperature measured by the first temperature sensor S1 is above the reference value (40°C~42°C), the control device CNT controls the concentration of microbubbles generated by the generator G to a second microbubble concentration (9427.2 bubbles / mL, higher than the first microbubble concentration) and the concentration of ultrafine bubbles to a second ultrafine bubble concentration (5.7E+07 bubbles / mL, higher than the first ultrafine bubble concentration). Then, the control device CNT controls the concentration of microbubbles generated by the generator G to the first microbubble concentration (6765.4 bubbles / mL, higher than the first ultrafine bubble concentration) and the concentration of ultrafine bubbles to the first ultrafine bubble concentration (4.2E+07 bubbles / mL, higher than the first ultrafine bubble concentration). Thus, with a water temperature of 40℃~42℃, the cleaning effect is maximized initially, and since the water temperature itself is neither too low nor too high, a warming effect is provided in the latter half.

[0172] As described above, the control device CNT selects a combination specified in the table corresponding to the measured water temperature stored in the storage unit M based on the measured water temperature, and controls the concentration of microbubbles and ultrafine bubbles generated by the generator G in the supplied water to be the concentration of microbubbles and ultrafine bubbles corresponding to the measured water temperature and ambient temperature of the selected combination.

[0173] In other words, the microbubble supply system according to the implementation method can provide appropriate heating and cleaning effects according to the bathing environment.

[0174] Furthermore, as an additional function, in addition to the effects of heating and cleaning, the water will become cloudy when the number of microbubbles exceeds, for example, around 8000. Therefore, the control device CNT can also be switched to other cleaning modes: after the water supply begins, the generator G is initially controlled to generate microbubbles in the supplied water, and then the generator G is controlled to generate microbubbles and / or ultrafine bubbles.

[0175] [Generator] Here, examples of generators applicable to the aforementioned microbubble supply devices according to various embodiments will be described with reference to the figures. FIG15A is a diagram showing one example of the configuration of a microbubble supply device generator. FIG15B is a schematic diagram of the vortex generating mechanism of the generator shown in FIG15A. FIG15C is an example of a preferred configuration of the generator shown in FIG15A. Furthermore, FIG16 is a diagram showing another example of the configuration of a microbubble supply device generator.

[0176] The generator 20 shown in Figure 15A can function as a generator G capable of generating microbubbles and ultrafine bubbles, but it can also be used as at least as a first generator G1 for generating ultrafine bubbles. Furthermore, the generator 30 shown in Figure 16 can also be used as a second generator G2 for generating microbubbles.

[0177] Referring to FIG15A, a generator applicable to the microbubble supply device according to various embodiments is described. The generator 20 includes: a gas-liquid inlet pipe 21 (the input side of the generator G of the second pipe L2 (FIGs 3 and 5), or the input side of the first generator G1 of the first branch L2a (FIG 1)) for introducing a mixture of liquid and air; a bubble generating mechanism 22 provided on the mixed fluid discharge side of the gas-liquid inlet pipe 21; a cylindrical gas-liquid mixed flow generating mechanism 25, with the gas-liquid inlet pipe 21 provided at the center of the pipe; and a discharge pipe 26 (the output side of the generator G of the second pipe L2 (FIGs 3 and 5), or the output side of the first generator G1 of the first branch L2a (FIG 1)) provided on the side of the gas-liquid mixed flow generating mechanism 25 for discharging liquid containing microbubbles.

[0178] The gas-liquid mixed-phase flow generating mechanism 25 has a cylindrical shape. The gas-liquid inlet pipe 21 extends from the upper surface of the cylinder body through the center of the cylinder, and the end of the gas-liquid inlet pipe 21 on the mixed fluid discharge side is configured with a gap between it and the bottom of the cylinder body. Furthermore, the interior of the cylinder body is divided into a lower groove portion 23a on the bottom side of the cylinder body and an upper groove portion 23b on the upper side of the cylinder body by means of the vortex generating mechanism 24. The vortex generating mechanism 24 has an upper surface 27a with two to four holes and a lower surface 27b with two to four holes offset from the holes on the upper surface; the holes on the upper surface are respectively connected to the holes on the lower surface. That is, as shown in FIG15B, in the cross-section of the vortex generating mechanism, each through hole 28 is inclined at a certain angle to the surface of the upper surface 27a or the lower surface 27b.

[0179] First, the mixture of water and air introduced into the gas-liquid inlet pipe 21 is then introduced into the bubble generating mechanism 22, where it becomes a mixture containing bubbles. The bubble generating mechanism 22 is constructed of a hollow member with a conical shape, and has one or more through holes 29 provided on a portion of the conical surface. The mixture introduced into the gas-liquid inlet pipe passes through the through holes 29 from the outside of the bubble generating mechanism 22 and is introduced into the interior of the bubble generating mechanism 22, where bubbles (microbubbles) are generated. By providing this bubble generating mechanism 22, even with relatively low water pressure and a small amount of water, sufficient microbubbles can be generated.

[0180] The aqueous component containing bubbles, which has been formed into a mixed fluid by the bubble generating mechanism 22, is discharged from the end of the gas-liquid inlet pipe 21 and introduced into the lower groove 23a of the gas-liquid mixed flow generating mechanism 25. Then, it passes through the through hole 28 of the vortex generating mechanism 24 and is introduced into the upper groove 23b of the gas-liquid mixed flow generating mechanism 25. The through hole 28 is inclined in the cross-sectional direction as described above, so when the aqueous component containing bubbles passes through the through hole 28, the aqueous component containing bubbles forms a vortex in the upper groove 23b. In the upper tank 23b, a vortex is generated centered on the gas-liquid inflow pipe 21. At this time, the aqueous composition containing large-diameter bubbles (microbubbles) with a lighter specific gravity accumulates on the inner side (central side of the cylindrical shape) of the upper tank 23b and is thus separated to the upper part of the upper tank 23b. On the other hand, the aqueous composition containing small-diameter bubbles is pushed to the outer side (outer periphery of the cylindrical shape) of the upper tank 23b due to centrifugal force. In this way, an aqueous composition containing many small-diameter bubbles can be generated and discharged through the discharge pipe 26 provided on the side of the gas-liquid mixed-phase flow generating mechanism 25.

[0181] In the discharge pipe 26, a bubble generating mechanism 22 may be provided inside, similar to that in the gas-liquid inflow pipe 21, so that when a water composition containing small-diameter bubbles passes through, it can become a water composition containing even smaller-diameter bubbles (ultrafine bubbles). Alternatively, two or more bubble generating mechanisms 22 in the discharge pipe 26 may be arranged side-by-side, and by setting three or more bubble generating mechanisms 22 in the overall device 20, the generation efficiency of microbubbles can be improved. Preferably, one bubble generating mechanism 22 is provided in the gas-liquid inflow pipe 21, and 1 to 4 bubble generating mechanisms 22 are provided in the discharge pipe 26. Furthermore, the water composition output from the discharge pipe 26 may contain microbubbles and ultrafine bubbles, but their ratio can be adjusted by adjusting the number or configuration of the bubble generating mechanisms 22.

[0182] As shown in Figure 15C, the bubble generating mechanism according to the present invention includes, for example, a wall that separates the inlet side of the liquid-air mixture from the outlet side of the bubble-containing fluid. The wall has a shape selected from a group consisting of cones, frustums, and cylinders with bottom openings, and at least a portion of the side surface of the shape separated by the wall has a through-hole for introducing the mixture into the inner side of the wall. The mixture is introduced into the interior of the wall through the through-hole, becoming a bubble-containing fluid, and is discharged from the bottom opening.

[0183] The number of through holes provided on the wall of the bubble generating mechanism according to the present invention is preferably 3 to 6, and they are preferably evenly spaced around the perimeter of the wall. Furthermore, the shape of the holes can be any shape and is not limited, but is preferably circular. When the through holes are circular, their inner diameter is 2 mm to 10 mm, preferably 2 mm to 6 mm.

[0184] When the bubble generating mechanism is conical, the height can be set to 8mm~50mm, preferably 10mm~30mm, and most preferably 12mm~25mm, while the inner diameter of the bottom can be set to 6mm~20mm, preferably 8mm~18mm, and most preferably 10mm~16mm.

[0185] When the bubble generating mechanism is in the shape of a truncated cone, the height of the truncated cone can be set to 8mm~50mm, preferably 10mm~30mm, and most preferably 12mm~25mm. The inner diameter of the upper bottom can be set to 5mm~10mm, preferably 6mm~9mm, and most preferably 7mm~8mm. The inner diameter of the lower bottom can be set to 6mm~20mm, preferably 8mm~18mm, and most preferably 10mm~16mm.

[0186] When the bubble generating mechanism is cylindrical, the height can be set to 8mm~50mm, preferably 10mm~30mm, and most preferably 12mm~25mm, while the inner diameter of the bottom can be set to 6mm~20mm, preferably 8mm~18mm, and most preferably 10mm~16mm.

[0187] In addition, the thickness of the wall constituting the bubble generating mechanism is 0.5mm to 8mm, preferably 1mm to 5mm, most preferably 2mm to 3mm, and preferably made of metals such as aluminum alloy, stainless steel, brass, or resin.

[0188] The number of through holes can range from 2 to 8, preferably 2 to 6, and most preferably 2 to 4. When multiple through holes are configured, it is preferable to space them at equal angles. For example, when there are 2 through holes, they can be arranged at a 180° angle. Furthermore, if the bubble generating mechanism is conical, the holes can be positioned 2mm to 18mm downward along the axial direction from the top of the cone, preferably 3mm to 15mm, and most preferably 5mm to 10mm. In the case of a frustum or cylinder, the holes can be positioned 1mm to 18mm downward along the axial direction from the top bottom, preferably 2mm to 15mm, and most preferably 2mm to 10mm.

[0189] When using a pump with an output of 8.9 L per minute, the orifice diameter is 1 mm to 4 mm, preferably 1 mm to 3 mm, and most preferably 2 mm to 3 mm. The orifice diameter should be appropriately varied depending on the performance of the pump used.

[0190] Next, for example, as shown in FIG16, generator 30 is a generating device using a general pressurized dissolution method, as described above, and is used as a second generator G2 (FIG1) to generate microbubbles. For example, in the case of increasing microbubbles to eliminate the heating effect, generator 30 can also be combined with generator 20 shown in FIG15A above.

[0191] In generator 30, the outlet diameter is throttled by throttling section 32, thereby limiting the amount of water discharged from discharge pipe 36. The interior of storage tank 35 is pressurized, for example, to 0.15 MPa or higher. Furthermore, within storage tank 35, the upper part is a gas layer and the lower part is a liquid phase. Then, a small hole H is opened on pipe 31, and water is sprayed into the pressurized storage tank in a shower-like manner, causing the gas to dissolve.

[0192] Here, generator 30 is introduced via pipe 31 (input side of second generator G2 of second branch L2b (Fig. 1)), for example, by supplying water containing gas from below a storage tank 35 pressurized to 0.15 MPa or higher. The water is ejected from a small hole H at the front end of pipe 31 into the gas layer within storage tank 35. At this time, the gas dissolves into the ejected water until it reaches a supersaturated state. The ejected water enters the water layer below due to gravity. At the lower part of this water layer within storage tank 35, discharge pipe 36 (output side of second generator G2 of second branch L2b (Fig. 1)) is provided. The interior of discharge pipe 36 is provided with a throttling section 32. When pressure is released through the throttling section 32, the dissolved air is precipitated as microbubbles, thereby discharging water containing microbubbles from discharge pipe 36.

[0193] As described above, the generator 20 shown in Figure 15A can function as a generator G capable of generating microbubbles and ultrafine bubbles, but it can also be used as at least as a first generator G1 for generating ultrafine bubbles. Furthermore, the generator 30 shown in Figure 16 can also be used as a second generator G2 for generating microbubbles. The configuration of generators suitable for microbubble supply devices is not limited to these generators; generators with the same function can also be used.

[0194] [Industrial applicability] The microbubble supply system, microbubble supply device, and control method of the microbubble supply system according to the present invention are useful for applications such as microbubble supply for bathing in medical facilities.

[0195] While several embodiments of the invention have been described, these embodiments are provided as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments, or variations thereof, are included in the scope of the invention as well as its equivalents, as are included in the scope or spirit of the invention.

[0196] 100, 200, 300: Microbubble supply system 101, 201, 301: Microbubble supply device 20: Generator 21: Gas-liquid inflow pipe 22: Bubble generating mechanism 24: Vortex Generating Mechanism 25: Gas-liquid mixed-phase flow generation mechanism 26: Discharge pipe 28: Through hole 29: Through hole 30: Generator 31: pipe 32: Throttling section 35: Storage tank 36: Discharge pipe 23a: Lower groove 23b: Upper groove 27a: Upper surface 27b: Lower surface CNT: Control device G: Generator G1: First Generator G2: Second Generator H: small hole K: Ambient temperature control device L1: First piping L2: Second piping L2a: First Divergence L2b: Second Divergence Lin: Input Department Lout: Output section M: Storage Department P: Pump Pin: Inlet Po: Discharge outlet Po1: First row exit Po2: Second row exit S1: First temperature sensor S2: Second temperature sensor T: Storage tank V: Electric valve device for water volume control V1: First electric valve V2: Second electric valve V300: Electric valve device for water volume control Y: Water temperature adjustment device Z: Solenoid valve device for air volume control Z1: Solenoid valve for first air volume Z2: Solenoid valve for second air volume Z3: Solenoid valve for third air volume Zin1: First intake port Zin2: Second intake port Zin3: Third intake port

Claims

1. A microbubble supply device for supplying water containing microbubbles to a storage tank, comprising: a first temperature sensor for measuring the temperature of the water stored in the storage tank; a pump for drawing in the water stored in the storage tank through an inlet via an inlet of a first pipe and discharging the drawn-in water through an outlet to a second pipe; a generator disposed on the second pipe for supplying water discharged from the outlet of the pump to an inlet side, generating microbubbles and ultrafine bubbles in the supplied water, and discharging the water containing microbubbles stored in the storage tank through an outlet side of the second pipe; a control device for controlling the concentration of microbubbles and ultrafine bubbles generated by the generator in the supplied water based on the water temperature measured by the first temperature sensor; and a water flow electric valve device disposed on the second pipe and connected between the outlet of the pump and the inlet side of the generator, and controlled by the control device to adjust the water flow rate supplied from the pump to the generator; the control device being: Based on the water temperature measured by the aforementioned first temperature sensor, the electric valve device for controlling the water volume is used, and by adjusting the water volume supplied from the aforementioned pump to the aforementioned generator, the concentration of microbubbles and ultrafine bubbles generated by the aforementioned water supplied by the aforementioned generator is controlled.

2. The microbubble supply device as described in claim 1, wherein: have: The second temperature sensor is used to measure the ambient temperature around the aforementioned storage tank; the aforementioned control device is used to control the concentration of microbubbles and ultrafine bubbles generated by the aforementioned generator from the aforementioned supplied water based on the ambient temperature measured by the aforementioned second temperature sensor and the water temperature measured by the aforementioned first temperature sensor.

3. The microbubble supply device as described in claim 2, wherein: The aforementioned first temperature sensor is installed inside the aforementioned first piping and measures the temperature of the water drawn in from the aforementioned storage tank that flows inside the aforementioned first piping.

4. The microbubble supply device as described in claim 1, wherein: The aforementioned second piping includes: a first branch, one end of which is connected to a first outlet of the aforementioned discharge port of the aforementioned pump, and the other end of which is connected to the output section of the aforementioned second piping; and a second branch, one end of which is connected to a second outlet of the aforementioned discharge port of the aforementioned pump, and the other end of which is connected to the other end of the aforementioned first branch; the aforementioned generator includes: a first generator disposed at the aforementioned first branch, which generates ultrafine bubbles in the supplied water, and outputs water containing ultrafine bubbles for storage in the aforementioned storage tank via the aforementioned first branch; and a second generator disposed at the aforementioned second branch, which generates microbubbles in the supplied water, and outputs water containing microbubbles for storage in the aforementioned storage tank via the aforementioned second branch; the aforementioned electric valve device for water volume includes: A first electric valve is connected between the aforementioned outlet of the aforementioned pump and the water input side of the aforementioned first generator, and is controlled by the aforementioned control device, thereby adjusting the amount of water supplied from the aforementioned pump to the aforementioned first generator; and a second electric valve is connected between the aforementioned outlet of the aforementioned pump and the water input side of the aforementioned second generator, and is controlled by the aforementioned control device, thereby adjusting the amount of water supplied from the aforementioned pump to the aforementioned second generator.

5. The microbubble supply device as described in claim 4, wherein: The aforementioned control device is: controlling the aforementioned first electric valve and controlling the concentration of ultrafine bubbles generated by the water supplied by the aforementioned first generator by adjusting the water volume supplied from the aforementioned pump to the aforementioned first generator; and controlling the aforementioned second electric valve and controlling the concentration of microbubbles generated by the water supplied by the aforementioned second generator by adjusting the water volume supplied from the aforementioned pump to the aforementioned second generator.

6. A microbubble supply device for supplying water containing microbubbles to a storage tank, comprising: a first temperature sensor for measuring the temperature of the water stored in the storage tank; a pump for drawing in the water stored in the storage tank through an inlet via an inlet of a first pipe and discharging the drawn-in water through an outlet to a second pipe; a generator disposed on the second pipe for supplying water discharged from the outlet of the pump to an inlet side, causing the supplied water to generate microbubbles and ultrafine bubbles, and for outputting the water containing microbubbles for storage in the storage tank through an outlet side via an outlet of the second pipe; and a control device for controlling the concentration of microbubbles and ultrafine bubbles generated by the generator from the supplied water based on the water temperature measured by the first temperature sensor. An air volume solenoid valve is connected to the supply passage and controlled to draw in a predetermined amount of air from the intake port. It is controlled by the aforementioned control device to open and close, adjusting the amount of air drawn in from the intake port for injection into the water supplied to the pump's intake port. The aforementioned control device controls the air volume solenoid valve based on the water temperature measured by the first temperature sensor, and controls the concentration of microbubbles and ultrafine bubbles generated by the generator from the supplied water by adjusting the amount of air injected into the water supplied to the pump's intake port.

7. The microbubble supply device as described in claim 6, wherein: The aforementioned air volume solenoid valve device comprises: a first air volume solenoid valve, connected to the aforementioned first piping and operated by the aforementioned control device, so that air is drawn in from a first air intake, and air of a first air volume per unit time is injected into water supplied to the suction port of the aforementioned pump via the aforementioned first piping; and a second air volume solenoid valve, connected to the aforementioned first piping and operated by the aforementioned control device, so that air is drawn in from a second air intake, and air of a second air volume per unit time, different from the aforementioned first air volume, is injected into water supplied to the suction port of the aforementioned pump via the aforementioned first piping.

8. The microbubble supply device as described in claim 7, wherein: The aforementioned control device is: a solenoid valve for controlling the first air volume and / or the solenoid valve for controlling the second air volume, and by adjusting the amount of air injected into the water supplied to the aforementioned pump per unit time, thereby controlling the concentration of microbubbles and ultrafine bubbles generated by the water supplied by the aforementioned generator.

9. The microbubble supply device as described in claim 7, wherein: The aforementioned solenoid valve device for air volume further includes: a third solenoid valve for air volume, which is connected to the aforementioned first piping and is operated by the aforementioned control device so that air is drawn in from the third air intake, and the air system, which is a third air volume different from the aforementioned first and second air volumes per unit time, is injected into the water supplied to the suction port of the aforementioned pump through the aforementioned first piping.

10. The microbubble supply device as described in claim 9, wherein: The aforementioned control device is: controlling at least one of the aforementioned first air volume solenoid valve, the aforementioned second air volume solenoid valve, and the aforementioned third air volume solenoid valve device, and controlling the concentration of microbubbles and ultrafine bubbles generated by the water supplied by the aforementioned generator by adjusting the amount of air supplied to the aforementioned generator per unit time.

11. A microbubble supply device for supplying water containing microbubbles to a storage tank, comprising: a first temperature sensor for measuring the temperature of the water stored in the storage tank; a pump for drawing in the water stored in the storage tank through an inlet via an inlet of a first pipe and discharging the drawn-in water through an outlet to a second pipe; a generator disposed on the second pipe for supplying water discharged from the outlet of the pump to the inlet side, generating microbubbles and ultrafine bubbles in the supplied water, and outputting the water containing microbubbles for storage in the storage tank from the outlet side via an outlet of the second pipe; a control device for controlling the concentration of microbubbles and ultrafine bubbles generated by the generator from the supplied water based on the water temperature measured by the first temperature sensor; and a water flow electric valve device disposed on the second pipe, located on the water output side of the generator, for adjusting the water flow rate output from the generator, and controlled by the control device to adjust the water flow rate supplied from the pump to the generator; the control device being: Based on the water temperature measured by the aforementioned first temperature sensor, the electric valve device for controlling the water volume is used, and by adjusting the water volume supplied from the aforementioned pump to the aforementioned generator, the concentration of microbubbles and ultrafine bubbles generated by the aforementioned water supplied by the aforementioned generator is controlled.

12. The microbubble supply device as described in claim 2, wherein: The aforementioned control device is as follows: when the water temperature measured by the aforementioned first temperature sensor does not reach the preset water temperature reference value, the concentration of the aforementioned microbubbles generated by the aforementioned generator is controlled to a preset first microbubble concentration, and the concentration of the aforementioned ultrafine bubbles is controlled to a preset first ultrafine bubble concentration; on the other hand, when the water temperature measured by the aforementioned first temperature sensor is above the aforementioned water temperature reference value, the concentration of the aforementioned microbubbles generated by the aforementioned generator is controlled to a second microbubble concentration that is higher than the aforementioned first microbubble concentration, and the concentration of the aforementioned ultrafine bubbles is controlled to a second ultrafine bubble concentration that is higher than the aforementioned first ultrafine bubble concentration.

13. The microbubble supply device as described in claim 12, wherein: The aforementioned control device is as follows: when the water temperature measured by the aforementioned first temperature sensor is above the aforementioned water temperature reference value, after controlling the concentration of the aforementioned microbubbles generated by the aforementioned generator to a second microbubble concentration that is higher than the aforementioned first microbubble concentration, and controlling the concentration of the aforementioned ultrafine bubbles to a second ultrafine bubble concentration that is higher than the aforementioned first ultrafine bubble concentration, the concentration of the aforementioned microbubbles generated by the aforementioned generator is controlled to the aforementioned first microbubble concentration, and the concentration of the aforementioned ultrafine bubbles is controlled to the aforementioned first ultrafine bubble concentration.

14. The microbubble supply device as described in claim 2, wherein: The aforementioned control device is as follows: when the water temperature measured by the aforementioned first temperature sensor does not reach the preset water temperature reference value, the concentration of the aforementioned microbubbles generated by the aforementioned generator is controlled to a preset first microbubble concentration, and the concentration of the aforementioned ultrafine bubbles is controlled to a preset first ultrafine bubble concentration; on the other hand, when the water temperature measured by the aforementioned first temperature sensor is above the aforementioned water temperature reference value, and the ambient temperature measured by the aforementioned second temperature sensor is above the aforementioned ambient temperature reference value, the concentration of the aforementioned microbubbles generated by the aforementioned generator is controlled to a second microbubble concentration that is higher than the aforementioned first microbubble concentration, and the concentration of the aforementioned ultrafine bubbles is controlled to a second ultrafine bubble concentration that is higher than the aforementioned first ultrafine bubble concentration.

15. The microbubble supply device as described in claim 14, wherein: The aforementioned control device is as follows: when the water temperature measured by the aforementioned first temperature sensor is above the aforementioned water temperature reference value, and the ambient temperature measured by the aforementioned second temperature sensor does not reach the aforementioned ambient temperature reference value, after controlling the concentration of the aforementioned microbubbles generated by the aforementioned generator to a second microbubble concentration that is higher than the aforementioned first microbubble concentration, and controlling the concentration of the aforementioned ultrafine bubbles to a second ultrafine bubble concentration that is higher than the aforementioned first ultrafine bubble concentration, the concentration of the aforementioned microbubbles generated by the aforementioned generator is controlled to the aforementioned first microbubble concentration, and the concentration of the aforementioned ultrafine bubbles is controlled to the aforementioned first ultrafine bubble concentration.

16. The microbubble supply device as described in claim 2, wherein: It also features a water temperature adjustment device, controlled by the aforementioned control device, to adjust the temperature of the water stored in the aforementioned storage tank to the target water temperature.

17. The microbubble supply device as described in claim 16, wherein: It also has an ambient temperature adjustment device, controlled by the aforementioned control device, to adjust the ambient temperature around the aforementioned storage tank to the target ambient temperature.

18. The microbubble supply device as described in claim 1, wherein: The aforementioned storage tank is a bathtub for users to bathe in.

19. The microbubble supply device as described in claim 1, wherein: The aforementioned control device includes a storage unit that stores a table that predefines a combination relating the range of water temperature in the storage tank to the concentration of ultrafine bubbles and microbubbles to be generated by the generator. Based on the measured water temperature, the control device selects the combination specified in the aforementioned table that corresponds to the measured water temperature stored in the storage unit, and controls the concentration of microbubbles and ultrafine bubbles generated by the supplied water by the generator to be the concentration of microbubbles and ultrafine bubbles corresponding to the measured water temperature of the selected combination.

20. The microbubble supply device as described in claim 2, wherein: The aforementioned control device includes a storage unit that stores a table that predefines a combination relating the range of water temperature and ambient temperature in the aforementioned storage tank to the concentration of ultrafine bubbles and microbubbles to be generated by the aforementioned generator. The aforementioned control device selects the combination specified in the aforementioned table that corresponds to the measured water temperature and ambient temperature stored in the aforementioned storage unit based on the measured water temperature and ambient temperature, and controls the concentration of microbubbles and ultrafine bubbles generated by the aforementioned generator from the aforementioned supplied water to be the concentration of microbubbles and ultrafine bubbles corresponding to the measured water temperature and ambient temperature of the aforementioned selected combination.

21. A microbubble supply system comprising: a storage tank for storing water for bathing; and a microbubble supply device for supplying water containing microbubbles to the storage tank; wherein the microbubble supply device comprises: a first temperature sensor for measuring the temperature of the water stored in the storage tank; a pump for drawing water from the storage tank through an inlet via an inlet of a first pipe and discharging it through an outlet to a second pipe; and a generator disposed in the second pipe for supplying water discharged from the outlet of the pump to the input side, thereby generating microbubbles and ultrafine bubbles in the supplied water, and for outputting the water containing microbubbles stored in the storage tank through an output side via an output of the second pipe. The control device controls the concentration of microbubbles and ultrafine bubbles generated by the water supplied by the generator based on the water temperature measured by the first temperature sensor; and a water flow electric valve device is installed on the second piping, located on the water output side of the generator, and is used to adjust the water flow output from the generator, and is controlled by the control device to adjust the water flow supplied from the pump to the generator; The control device controls the water flow electric valve device based on the water temperature measured by the first temperature sensor, and controls the concentration of microbubbles and ultrafine bubbles generated by the water supplied by the generator by adjusting the water flow supplied from the pump to the generator.

22. A control method for a microbubble supply device, wherein the microbubble supply device supplies water containing microbubbles to a storage tank; the microbubble supply device comprises: a first temperature sensor for measuring the temperature of water stored in the storage tank; a pump for drawing water stored in the storage tank from the suction port via the input section of a first pipe and discharging it from the discharge port to a second pipe; a generator disposed on the second pipe for supplying water discharged from the discharge port of the pump to the input side, causing the supplied water to generate microbubbles and ultrafine bubbles, and outputting water containing microbubbles for storage in the storage tank from the output side via the output section of the second pipe; a control device; and a water volume electric valve device disposed on the second pipe, located on the water output side of the generator, for adjusting the water volume output from the generator, and controlled by the control device to adjust the water volume supplied from the pump to the generator; the control device is: Based on the water temperature measured by the aforementioned first temperature sensor, the electric valve device for controlling the water volume is used, and by adjusting the water volume supplied from the aforementioned pump to the aforementioned generator, the concentration of microbubbles and ultrafine bubbles generated by the aforementioned water supplied by the aforementioned generator is controlled.

23. A microbubble supply device for supplying water containing microbubbles, comprising: a first temperature sensor for measuring the temperature of the water; a pump for drawing in the water through an inlet via an inlet of a first pipe and discharging the drawn-in water through an outlet to a second pipe; a generator disposed on the second pipe for supplying water discharged from the outlet of the pump to the inlet side, causing the supplied water to generate microbubbles and / or ultrafine bubbles, and outputting water containing microbubbles from the outlet side via an outlet of the second pipe; a control device for controlling the concentration of microbubbles and / or ultrafine bubbles generated by the generator in the supplied water based on the water temperature measured by the first temperature sensor; and a water flow electric valve device disposed on the second pipe, located on the water output side of the generator, for adjusting the water flow rate output from the generator, and controlled by the control device to adjust the water flow rate supplied from the pump to the generator; the control device being: Based on the water temperature measured by the aforementioned first temperature sensor, the electric valve device for controlling the water volume is used, and by adjusting the water volume supplied from the aforementioned pump to the aforementioned generator, the concentration of microbubbles and / or ultrafine bubbles generated by the aforementioned water supplied by the aforementioned generator is controlled.

24. The microbubble supply device as described in claim 23, wherein: The aforementioned control device initially controls the aforementioned generator to generate microbubbles in the aforementioned supplied water after the water supply begins, and then controls the aforementioned generator to generate microbubbles and / or ultrafine bubbles.

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