Micro-nano bubble water preparation device and water supply equipment

Abstract

The present application relates to the technical field of micro-nano bubble water preparation, and discloses a micro-nano bubble water preparation device and a water supply equipment.The micro-nano bubble water preparation device comprises a tank body, a water inlet channel, a gas inlet channel and a gas-liquid mixer, the tank body is provided with a gas-liquid mixing cavity, the gas-liquid mixing cavity is provided with a preset positive pressure, the water inlet channel and the gas inlet channel are used for respectively introducing water and gas into the gas-liquid mixing cavity from the gas-liquid mixing cavity, the gas-liquid mixer is arranged in the gas-liquid mixing cavity and divides the gas-liquid mixing cavity into an upper mixing cavity and a lower mixing cavity, the gas-liquid mixer is provided with turbulence holes which are connected with the upper mixing cavity and the lower mixing cavity, and the gas-liquid mixer surrounds a tapered space which is wide at the upper end and narrow at the lower end.The micro-nano bubble water preparation device can make the gas and the liquid mix more fully and has good bubble preparation effect.The water supply equipment can continuously and stably supply micro-nano bubble water by arranging the above micro-nano bubble water preparation device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bubble water preparation, and in particular to a micro-nano bubble water preparation device and a water supply equipment. BACKGROUND

[0002] Micro-nano bubble water has advantages such as oxidizability and bactericidal property, so the micro-nano bubble water preparation device is more and more widely applied to household appliances such as water purifiers and water heaters. The preparation principle of micro-nano bubble water is mainly realized by a pressure difference mixing method, that is, a certain amount of gas (for example, air) is fully mixed with water under a certain pressure to form a gas-water mixture, and then the pressure is released by expansion to make the gas dissolved in the water suddenly aggregate to form fine micro-bubbles and become milky white.

[0003] In some use scenarios, when the flow demand of the required micro-nano bubble water is large, the residence time of water in the gas-liquid mixing chamber is short, and the existing micro-nano bubble water preparation device is difficult to ensure that a sufficient amount of gas is fully dissolved in the water, thereby affecting the subsequent preparation effect of micro-nano bubble water.

[0004] Therefore, there is an urgent need for a micro-nano bubble water preparation device and a water supply equipment to solve the above technical problems. SUMMARY

[0005] One object of the present application is to provide a micro-nano bubble water preparation device which can mix gas and liquid more fully and has good bubble preparation effect.

[0006] Another object of the present application is to provide a water supply equipment which can continuously and stably supply micro-nano bubble water by arranging the above micro-nano bubble water preparation device.

[0007] To achieve this object, the present application adopts the following technical solutions:

[0008] A micro-nano bubble water preparation device, comprising:

[0009] A tank body having a gas-liquid mixing chamber constructed thereon, the gas-liquid mixing chamber being pre-set with a positive pressure;

[0010] A water inlet channel and a gas inlet channel for respectively introducing water and gas into the gas-liquid mixing chamber from above the gas-liquid mixing chamber;

[0011] A gas-liquid mixer arranged in the gas-liquid mixing chamber and dividing the gas-liquid mixing chamber into an upper mixing chamber and a lower mixing chamber, the gas-liquid mixer being provided with turbulence holes communicating the upper mixing chamber and the lower mixing chamber, and the gas-liquid mixer surrounding a tapered space with a wide upper end and a narrow lower end.

[0012] Preferably, the turbulence holes are inclined upward in the direction from the upper mixing chamber to the lower mixing chamber.

[0013] Preferably, a drainage port is arranged above the gas-liquid mixing chamber, and the gas-liquid mixer is arranged at a distance of 30-50 cm from the drainage port in the vertical direction.

[0014] Preferably, an air inlet chamber is further arranged above the gas-liquid mixing chamber, the air inlet chamber is in communication with the gas-liquid mixing chamber through a drainage port arranged directly above the gas-liquid mixing chamber, the air inlet channel is in communication with the air inlet chamber, the outlet of the water inlet channel is a jet port, the jet port is arranged opposite to the drainage port and there is a gap between the jet port and the drainage port for gas to pass through.

[0015] Preferably, the distance between the jet port and the drainage port in the vertically downward direction is -5-5 mm.

[0016] Preferably, a drainage pipe is arranged below the drainage port, and the length of the drainage pipe is 2-5 times the inner diameter of the drainage pipe.

[0017] Preferably, the water inlet channel comprises a water inlet section and an acceleration section arranged below the water inlet section, the flow area of the acceleration section is smaller than that of the water inlet section, and the outlet of the acceleration section is the jet port.

[0018] Preferably, the diameter of the drainage port is greater than that of the jet port.

[0019] Preferably, a buffer rib is arranged in the air inlet chamber, and the opening of the air inlet channel towards the air inlet chamber is arranged opposite to the buffer rib.

[0020] Preferably, the buffer rib is arranged around the drainage port and the jet port, a gas inlet port is arranged on the buffer rib to communicate the air inlet chamber and the drainage port, and the gas inlet port is arranged staggered to the opening of the air inlet channel towards the air inlet chamber.

[0021] Preferably, the connection position of the inner wall of the air inlet chamber and / or the buffer rib to the inner wall of the air inlet chamber is smoothly transitioned.

[0022] Preferably, the micro-nano bubble water preparation device further comprises a gas pump arranged on the air inlet channel, and the gas pump is used to pump gas into the air inlet channel.

[0023] Preferably, the micro-nano bubble water preparation device further comprises a one-way valve arranged on the air inlet channel and located between the gas pump and the air inlet chamber, and the one-way valve is opened when the pressure in the air inlet chamber is negative pressure.

[0024] Preferably, the micro-nano bubble water preparation device further comprises a bubble releasing mechanism, the bubble releasing mechanism being in communication with the gas-liquid mixing cavity, and a pressure in the bubble releasing mechanism being less than a pressure in the gas-liquid mixing cavity.

[0025] Preferably, the bubble releasing mechanism comprises a bubble releasing channel and a bubble releasing cavity, the bubble releasing channel being in communication with the gas-liquid mixing cavity and the bubble releasing cavity, and a bubble releasing sheet being arranged in the bubble releasing cavity, the bubble releasing sheet being used to cut the liquid mixed from the gas-liquid mixing cavity.

[0026] Preferably, the bubble releasing channel comprises a gradually changing section and a communication section, two ends of the gradually changing section being in communication with the gas-liquid mixing cavity and one end of the communication section respectively, and the other end of the communication section being in communication with the bubble releasing cavity, and a flow area of the gradually changing section gradually decreasing from the gas-liquid mixing cavity to the communication section.

[0027] Preferably, the micro-nano bubble water preparation device further comprises an increasing pump, the increasing pump being used to pump water into the air inlet channel.

[0028] A water supply device, characterized in that the micro-nano bubble water preparation device is comprised.

[0029] The micro-nano bubble water preparation device has the following advantages:

[0030] In the micro-nano bubble water preparation device, water and gas enter the gas-liquid mixing cavity from above, enter the upper mixing cavity first, and then enter the lower mixing cavity through the turbulence holes of the gas-liquid mixer. The gas-liquid mixing cavity is in a positive pressure environment, so the gas can be dissolved in the water to generate micro-nano bubble water. The gas-liquid mixer forms a tapered space with a wide upper part and a narrow lower part. On one hand, the water collides with the upper side wall of the gas-liquid mixer and stays and rolls in the tapered space during falling, thereby forming sufficient turbulence. On the other hand, the water in the lower mixing cavity is more easily backflowed to the upper mixing cavity through the turbulence holes under the guidance of the lower side wall of the gas-liquid mixer, thereby further improving the turbulence of the water and making the gas and water mix more fully, ensuring that the water is more fully and uniformly dissolved in the water, and further ensuring that the micro-nano bubble water with high bubble concentration can be stably prepared even when the micro-nano bubble water preparation device has a large flow rate.

[0031] The water outlet device can continuously and stably supply micro-nano bubble water with good effect by arranging the micro-nano bubble water preparation device. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a structural schematic diagram of a first water heater provided by Embodiment One of the present application;

[0033] Figure 2is a structural schematic view of a second water heater provided by embodiment one of the present application;

[0034] Figure 3 is a structural schematic view of a micro-nano bubble water preparation device provided by embodiment one of the present application;

[0035] Figure 4 is a structural schematic view of a water heater provided by embodiment two of the present application.

[0036] in the figure:

[0037] 101 - shell; 102 - heating module; 103 - water inlet pipe; 104 - gas pipe; 105 - water outlet pipe; 106 - micro-nano bubble water preparation device;

[0038] 1 - tank body; 11 - gas-liquid mixing cavity; 111 - upper mixing cavity; 112 - lower mixing cavity; 12 - air inlet cavity;

[0039] 2 - water inlet channel; 21 - water inlet section; 22 - acceleration section; 23 - flow guide section; 24 - jet port;

[0040] 3 - air inlet channel;

[0041] 4 - gas-liquid mixer; 41 - turbulence hole;

[0042] 51 - drainage port; 52 - drainage pipe;

[0043] 6 - buffer rib; 61 - air inlet port;

[0044] 71 - one-way valve; 72 - booster pump; 73 - air pump;

[0045] 8 - bubble releasing mechanism; 81 - bubble releasing channel; 811 - gradual change section; 812 - communication section; 82 - bubble releasing cavity; 83 - bubble releasing sheet. DETAILED DESCRIPTION

[0046] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only for the purpose of explaining the present application, and not for limiting the present application. In addition, it should be noted that, for the purpose of description, only the parts related to the present application are shown in the drawings, rather than all the structures.

[0047] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0049] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and other orientation or position relationships are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description and do not have special meanings.

[0050] Embodiment one

[0051] The present embodiment provides a micro-nano bubble water preparation device 106 and a water supply equipment, the water supply equipment comprising the micro-nano bubble water preparation device 106. Optionally, the water supply equipment can be a water heater, a water purifier, etc. In the present embodiment, the water supply equipment is taken as a gas water heater for example. As shown in Figure 1 and Figure 2 , the water heater comprises a shell 101, a heating module 102, a water inlet pipe 103, a gas pipe 104, a water outlet pipe 105 and the micro-nano bubble water preparation device 106. The heating module 102 is arranged in the shell 101, the water inlet pipe 103 is in communication with the heating module 102 and is used to pass raw water into the heating module 102, the gas pipe 104 is used to pass gas into the heating module 102, the heating module 102 heats the raw water after burning the gas, the water outlet pipe 105 is in communication with the heating module 102 and a water use point, and the micro-nano bubble water preparation device 106 is arranged on the water outlet pipe 105, so that the water use point can use micro-nano bubble water.

[0052] In one embodiment, as shown in Figure 1 , the micro-nano bubble water preparation device 106 is arranged in the shell 101 of the water heater. In another embodiment, as shown in Figure 2 , the micro-nano bubble water preparation device 106 can also be arranged outside the water heater, which can be arranged according to actual needs, and is not limited herein.

[0053] Preferably, as shown in Figure 1 andFigure 3 As shown in the figure, the micro-nano bubble water preparation device 106 comprises a tank body 1, a water inlet channel 2, a gas inlet channel 3 and a bubble releasing mechanism 8. The tank body 1 is provided with a gas-liquid mixing cavity 11. The water inlet channel 2 is used to introduce water into the gas-liquid mixing cavity 11. The gas inlet channel 3 is used to introduce gas into the gas-liquid mixing cavity 11. The gas-liquid mixing cavity 11 is in a positive pressure state so as to facilitate the gas and water to be fully mixed and dissolved in the water. The bubble releasing mechanism 8 is connected with the gas-liquid mixing cavity 11. The gas-water mixture formed in the gas-liquid mixing cavity 11 enters the bubble releasing mechanism 8, and the pressure is suddenly released. The gas dissolved in the water suddenly aggregates to form micro-nano bubble water.

[0054] As shown in the figure, Figure 1 and Figure 2 The micro-nano bubble water preparation device 106 further comprises a booster pump 72. The booster pump 72 is used to pump water into the water inlet channel 2 so as to continuously prepare micro-nano bubble water. Preferably, in the embodiment, the water heater is a zero-cold-water water heater. The zero-cold-water water heater is different from the ordinary water heater in that the water outlet pipe 105 is further provided with a booster pump. The booster pump can transport the cold water remaining in the water outlet pipe 105 back to the heating module 102 for reheating, so that the water outlet can directly output hot water. In the embodiment, when the micro-nano bubble water preparation device 106 is applied to the zero-cold-water water heater, the booster pump for realizing the zero-cold-water function of the water heater and the booster pump 72 in the micro-nano bubble water preparation device 106 can share one, which not only can continuously provide micro-nano bubble water, but also reduces the number of pumps, thereby reducing the cost of the water heater.

[0055] Preferably, as shown in the figure, Figure 3 The tank body 1 is further provided with a gas inlet cavity 12 above the gas-liquid mixing cavity 11. A drainage port 51 is arranged directly above the gas-liquid mixing cavity 11. The gas inlet cavity 12 is connected with the gas-liquid mixing cavity 11 through the drainage port 51. The gas inlet channel 3 is connected with the gas inlet cavity 12. The water inlet channel 2 extends into the gas inlet cavity 12. The outlet of the water inlet channel 2 is a jet port 24. The jet port 24 is arranged opposite to the drainage port 51 and there is a gap between the jet port 24 and the drainage port 51 for the gas to pass through.

[0056] When the booster pump 72 introduces water into the water inlet channel 2, the water is discharged from the jet port 24 at a certain speed and flows into the flow guide port 51. First, because there is a gap between the jet port 24 and the flow guide port 51 for the gas to pass through, when the water flow with a certain speed flows into the flow guide port 51, it will drive a part of the gas in the air inlet cavity 12 to enter the flow guide port 51 together with the water flow, and at this time, the gas in the air inlet cavity 12 is reduced to form a negative pressure state, so that the external gas can automatically enter the air inlet cavity 12 through the air inlet channel 3, so that water and gas can continuously enter the gas-liquid mixing cavity 11 through the flow guide port 51, so that the micro-nano bubble water preparation device 106 can continuously produce micro-nano bubble water. Second, the embodiment realizes that the air inlet channel 3 is located downstream of the booster pump 72, that is, the externally introduced gas will not enter the booster pump 72, thereby reducing the vibration and noise of the booster pump 72 during operation and improving the service life of the booster pump 72. Third, the air inlet cavity 12 and the gas-liquid mixing cavity 11 are both constructed on the tank body 1, so that the structure of the entire micro-nano bubble water is more compact.

[0057] It can be understood that at the initial stage of introducing gas and water into the gas-liquid mixing cavity 11, by making the introduction amount of gas / water in the gas-liquid mixing cavity 11 greater than the discharge amount, a positive pressure environment can be formed in the gas-liquid mixing cavity 11. When the positive pressure value in the gas-liquid mixing cavity 11 reaches a preset value, the introduction amount of gas / water in the gas-liquid mixing cavity 11 is then equal to the discharge amount, so that the pressure in the gas-liquid mixing cavity 11 can be maintained at the preset value.

[0058] Preferably, as shown in Figure 3 The water inlet channel 2 includes a water inlet section 21 and an acceleration section 22 located below the water inlet section 21, and the flow area of the acceleration section 22 is smaller than that of the water inlet section 21. The outlet of the acceleration section 22 is the jet port 24. By setting the flow area of the acceleration section 22 to be smaller than that of the water inlet section 21, the speed of the water ejected from the jet port 24 can be increased. On the one hand, the high-speed water flow is more convenient for bringing the gas in the air inlet cavity 12 into the gas-liquid mixing cavity 11; on the other hand, after the water flow enters the gas-liquid mixing cavity 11 at a high speed, it is convenient to generate a greater impact force on the structure in the gas-liquid mixing cavity 11, thereby facilitating better mixing with the gas in the gas-liquid mixing cavity 11.

[0059] Preferably, in the embodiment, as shown in Figure 3As shown, a guide section 23 is arranged between the water inlet section 21 and the acceleration section 22, and the flow area of the guide section 23 gradually decreases in the direction of water flow. The arrangement of the guide section 23 makes the change of the flow area of the whole water inlet passage 2 more gentle, thereby ensuring the smoothness of water flow. Preferably, the water inlet section 21 is vertically arranged above the jet port 24, so as to reduce the resistance of the water inlet passage 2 to water flow and ensure that water is sprayed out of the jet port 24 at a faster speed.

[0060] Preferably, the diameter of the guide port 51 is greater than the diameter of the jet port 24, so as to provide space for the gas in the air inlet cavity 12 to enter the guide port 51 and ensure that the high-speed water flow can drive the gas in the air inlet cavity 12 to enter the gas-liquid mixing cavity 11 synchronously. Preferably, the diameter of the guide port 51 is 1-3 times the diameter of the jet port 24. More preferably, the diameter of the guide port 51 is 1.5-2.5 times the diameter of the jet port 24.

[0061] Since the gas-liquid mixing cavity 11 is in a positive pressure environment and the air inlet cavity 12 is in a negative pressure environment, it is necessary to ensure good isolation effect between the gas-liquid mixing cavity 11 and the air inlet cavity 12. Preferably, as shown in Figure 3 As shown, a guide pipe 52 is arranged below the guide port 51, and the length of the guide pipe 52 is 2-5 times the inner diameter of the guide pipe 52. By arranging the guide pipe 52 and setting the length and inner diameter of the guide pipe 52 within the above range, a sufficient length of isolation area can be formed to ensure good isolation effect between the gas-liquid mixing cavity 11 and the air inlet cavity 12; and the guide pipe 52 is not too long to generate excessive resistance to water flow and consume too much water kinetic energy, so as to ensure that water flow can enter the gas-liquid mixing cavity 11 at a high speed and be mixed with the gas in the gas-liquid mixing cavity 11 better. Preferably, in the embodiment, the guide pipe 52 is vertically arranged above the gas-liquid mixing cavity 11, so as to further reduce the resistance of the guide pipe 52 to water flow.

[0062] Further, as shown in Figure 3 As shown, the distance between the jet port 24 and the guide port 51 in the vertically downward direction is -5mm-5mm. It should be noted that when the distance between the jet port 24 and the guide port 51 is negative, it means that the lower end of the air inlet passage 3 extends into the guide pipe 52. Whether the lower end of the air inlet passage 3 extends into the guide pipe 52 or not, as long as a certain gap is formed between the water flow sprayed by the jet port 24 and the side wall of the guide pipe 52 to enable the gas in the air inlet cavity 12 to enter the gas-liquid mixing cavity 11 along with the water flow, it is acceptable. Further, the distance between the jet port 24 and the guide port 51 is -2mm-3mm.

[0063] Preferably, as shown in Figure 1As shown, the micro-nano bubble water preparation device 106 further comprises a gas pump 73 arranged on the gas inlet channel 3, which is used to pump gas into the gas inlet channel 3. In one aspect, the gas pump 73 can be used to assist in pumping gas into the gas inlet cavity 12. In another aspect, the gas pump 73 can also be used to pressurize the gas-liquid mixing cavity 11. It should be noted that when the gas pump 73 is working, the gas inlet cavity 12 is not in a state of negative pressure at this time.

[0064] Further, the micro-nano bubble water preparation device 106 further comprises a one-way valve 71 arranged on the gas inlet channel 3, which is arranged on the gas inlet channel 3 and located between the gas pump 73 and the gas inlet cavity 12. When the pressure in the gas inlet cavity 12 is negative, the one-way valve 71 is opened, so that the external gas can smoothly enter the gas inlet cavity 12. In addition, when the water outlet of the gas-liquid mixing cavity 11 is not smooth and water backflow occurs, the arrangement of the one-way valve 71 can prevent the backflow liquid from flowing into the gas pump 73 through the gas inlet channel 3, avoiding damage to the gas pump 73. Preferably, the one-way valve 71 is preferably a low-resistance diaphragm one-way valve, so as to reduce the energy required to open the one-way valve 71, and maximize the automatic gas intake effect of the gas inlet cavity 12.

[0065] Preferably, as shown in the drawings, Figure 3 As shown, the gas inlet cavity 12 is provided with a buffer rib 6, and the opening of the gas inlet channel 3 towards the gas inlet cavity 12 is arranged opposite to the buffer rib 6. When the water pressure unloading of the booster pump 72 is closed, the buffer rib 6 can prevent / relieve the liquid in the gas-liquid mixing cavity 11 from flowing back to the gas inlet cavity 12 under the existence of back pressure, and then overflowing from the gas inlet channel 3. Specifically, in this embodiment, the buffer rib 6 is arranged around the drainage port 51 and the jet port 24, and the buffer rib 6 is provided with a gas inlet port 61 communicating the gas inlet cavity 12 and the drainage port 51, and the gas inlet port 61 is arranged staggered with the opening of the gas inlet channel 3 towards the gas inlet cavity 12. The buffer rib 6 fully surrounds the drainage port 51, so as to better prevent the backflow water from entering the gas inlet channel 3. Preferably, the inner wall of the gas inlet cavity 12 and / or the connection position of the buffer rib 6 and the inner wall of the gas inlet cavity 12 is smoothly transitioned. Thus, the resistance of the gas in the gas inlet cavity 12 around the buffer rib 6 to finally enter the drainage port 51 can be reduced.

[0066] Preferably, as shown in the drawings, Figure 3 As shown, the micro-nano bubble water preparation device 106 further comprises a gas-liquid mixer 4 arranged in the gas-liquid mixing cavity 11 and dividing the gas-liquid mixing cavity 11 into an upper mixing cavity 111 and a lower mixing cavity 112, and the gas-liquid mixer 4 is provided with a turbulence hole 41 communicating the upper mixing cavity 111 and the lower mixing cavity 112, and the gas-liquid mixer 4 surrounds a tapered space with a wide upper end and a narrow lower end.

[0067] After water is introduced into the water inlet channel 2, the water and the gas enter the gas-liquid mixing chamber 11 from the drainage pipe 52, first enter the upper mixing chamber 111, and then enter the lower mixing chamber 112 through the turbulence holes 41 on the gas-liquid mixer 4. The gas-liquid mixing chamber 11 is in a positive pressure environment, so the gas can be dissolved in the water. The gas-liquid mixer 4 is surrounded to form a tapered space that is wide at the top and narrow at the bottom. On the one hand, in the process of water falling, the water can fully collide with the upper side wall of the gas-liquid mixer 4 and stay and roll in the tapered space, thereby forming sufficient turbulence. On the other hand, under the guidance of the lower side wall of the gas-liquid mixer 4, the water in the lower mixing chamber 112 is more convenient to flow back to the upper mixing chamber 111 through the turbulence holes 41, thereby further improving the turbulence of the water and the water and the gas are more fully mixed, ensuring that the water is more fully and uniformly dissolved in the water, and further ensuring that when the micro-nano bubble water preparation device 106 has a large flow rate, micro-nano bubble water with a high bubble concentration can also be stably prepared.

[0068] Preferably, when the micro-nano bubble water preparation device 106 is used, the water level in the gas-liquid mixing chamber 11 can be controlled to be located at a position of 1 / 3 to 2 / 3 along the vertical direction of the gas-liquid mixing chamber 11. At this time, the water in the gas-liquid mixing chamber 11 can produce a better turbulence effect, thereby improving the mixing effect of the gas and the water.

[0069] Optionally, in the embodiment, the gas-liquid mixer 4 can be fixedly connected with the inner wall of the gas-liquid mixing chamber 11 by any one of fastening, welding, and bonding. The specific connection mode can be selected according to the materials of the tank body 1 and the gas-liquid mixer 4.

[0070] Preferably, as shown in Figure 3 the direction from the upper mixing chamber 111 to the lower mixing chamber 112, the turbulence holes 41 are inclined upward. The upwardly inclined turbulence holes 41 make the water entering the lower mixing chamber 112 from the upper mixing chamber 111 have an upward speed, so that the water in the lower mixing chamber 112 also produces strong disturbance and turbulence, further improving the uniformity of the mixing of the gas and the water, and thereby ensuring better bubble preparation effect.

[0071] Preferably, as shown in Figure 3 the vertical direction, the distance between the upper end of the gas-liquid mixer 4 and the drainage port 51 is 30 cm to 50 cm. Under the action of gravity, the speed of the water increases continuously before the water enters the gas-liquid mixing chamber 11 from the drainage port 51 and collides with the gas-liquid mixing chamber 11. The distance between the gas-liquid mixer 4 and the drainage port 51 is set to be greater than 30 mm, so that the water has sufficient speed when colliding with the gas-liquid mixer 4 to produce sufficient turbulence and disturbance, thereby improving the mixing effect of the water and the gas. The distance between the gas-liquid mixer 4 and the drainage port 51 is set to be less than 50 mm to avoid the volume of the entire micro-nano bubble water preparation device 106 being too large.

[0072] Preferably, as shown in Figure 3 The micro-nano bubble water preparation device 106 further comprises a bubble releasing mechanism 8 which is in communication with the gas-liquid mixing cavity 11, and the pressure in the bubble releasing mechanism 8 is less than that in the gas-liquid mixing cavity 11. When the gas-water mixture from the gas-liquid mixing cavity 11 suddenly enters the bubble releasing mechanism 8 which is under pressure, the gas dissolved in the water suddenly aggregates, thereby forming the milk-like micro-nano bubble water.

[0073] Specifically, as shown in Figure 3 The bubble releasing mechanism 8 comprises a bubble releasing channel 81 and a bubble releasing cavity 82, the bubble releasing channel 81 is in communication with the gas-liquid mixing cavity 11 and the bubble releasing cavity 82, and the bubble releasing cavity 82 is provided with a bubble releasing sheet 83 which is used to cut the liquid mixture from the gas-liquid mixing cavity 11. The gas-water mixture enters the bubble releasing cavity 82 through the bubble releasing channel 81 and can fully generate micro-bubbles under the cutting action of the bubble releasing sheet 83. Optionally, the bubble releasing sheet 83 can be a 50-800 mesh porous stainless steel wire mesh, and the micro-porous structure thereof can fully cut the liquid, so as to better prepare the micro-bubble water.

[0074] Preferably, as shown in Figure 3 The bubble releasing channel 81 comprises a gradual change section 811 and a communication section 812, the two ends of the gradual change section 811 are in communication with the gas-liquid mixing cavity 11 and one end of the communication section 812 respectively, the other end of the communication section 812 is in communication with the bubble releasing cavity 82, and the flow area of the gradual change section 811 gradually decreases from the gas-liquid mixing cavity 11 to the communication section 812. The setting of the gradual change section 811 can ensure that the gas-water mixture can more smoothly enter the bubble releasing channel 81, and the setting of the communication section 812 with a smaller flow area can ensure that the gas-water mixture can suddenly enter the low-pressure environment from the high-pressure environment, which is more conducive to the generation of micro-nano bubbles.

[0075] Preferably, in the embodiment, the bubble releasing mechanism 8 is arranged directly below the gas-liquid mixing cavity 11 and is integrally formed with the tank body 1, so that the overall structure of the micro-nano bubble water preparation device 106 is more compact. Optionally, a threaded portion is arranged on the outer wall of one end of the bubble releasing cavity 82, so that the bubble releasing mechanism 8 can be in communication with the water pipe at the water supply point through the threaded portion.

[0076] Embodiment Two

[0077] The embodiment provides a micro-nano bubble water preparation device 106 and a water supply equipment. The water supply equipment comprises the micro-nano bubble water preparation device 106. The water supply equipment of the embodiment and the water supply equipment in the embodiment one are basically the same in the overall structure and working principle, and the same parts will not be described here again, and the difference mainly lies in the connection mode of the bubble releasing mechanism 8 and the tank body 1:

[0078] AsFigure 4 As shown, in the embodiment, the bubble releasing mechanism 8 of the micro-nano bubble water preparation device 106 and the tank body 1 are in a split structure, that is, the gas-liquid mixing cavity 11 is connected with the bubble releasing mechanism 8 through a pipeline. In this setting mode, the position of the bubble releasing mechanism can be more flexibly set to meet different use requirements. Specifically, in the embodiment, the bubble releasing mechanism 8 is arranged outside the shell 101. In the embodiment, the bubble releasing mechanism 8 is provided with a threaded portion at both ends, thereby facilitating the connection of the bubble releasing mechanism 8 with the upstream pipeline and the downstream pipeline. Of course, in other embodiments, the connection mode of the bubble releasing mechanism 8 with the upstream pipeline and the downstream pipeline is not limited to threaded connection, but can also be other connection modes, which are not limited herein.

[0079] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, according to the idea of the present application, the specific embodiments and application range can be changed, and the content of the specification should not be understood as a limitation of the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the claims of the present application.

Claims

1. A micro-nano bubble water preparation device, characterized in that: include: A tank body (1) is provided with a gas-liquid mixing chamber (11), wherein the gas-liquid mixing chamber (11) is at a preset positive pressure; The water inlet channel (2) and the air inlet channel (3) are respectively used to introduce water and gas into the gas-liquid mixing chamber (11) from above the gas-liquid mixing chamber (11); A gas-liquid mixer (4) is arranged in the gas-liquid mixing chamber (11) and divides the gas-liquid mixing chamber (11) into an upper mixing chamber (111) and a lower mixing chamber (112); a turbulent hole (41) is provided on the gas-liquid mixer (4) for communicating with the upper mixing chamber (111) and the lower mixing chamber (112); and the gas-liquid mixer (4) encloses a conical space with a wide upper end and a narrow lower end; Along the direction from the upper mixing chamber (111) to the lower mixing chamber (112), the flow-turbulating holes (41) are arranged obliquely upward.

2. The micro-nano bubble water preparation device according to claim 1, characterized in that: A drainage port (51) is provided above the gas-liquid mixing chamber (11), and the drainage port (51) is used to introduce water and gas. In the vertical direction, the distance between the upper end of the gas-liquid mixer (4) and the drainage port (51) is 30 cm to 50 cm.

3. The micro-nano bubble water preparation device according to any one of claims 1-2, characterized in that: The tank body (1) is further provided with an air inlet chamber (12) located above the gas-liquid mixing chamber (11); the air inlet chamber (12) is communicated with the gas-liquid mixing chamber (11) via a drainage port (51) arranged directly above the gas-liquid mixing chamber (11); the air inlet channel (3) is communicated with the air inlet chamber (12); the outlet of the water inlet channel (2) is a jet port (24); the jet port (24) is arranged opposite to the drainage port (51) and a gap exists between the jet port (24) and the drainage port (51) for gas to pass through.

4. The micro-nano bubble water preparation device according to claim 3, characterized in that: In the vertical downward direction, the distance between the jet port (24) and the drainage port (51) is -5 mm to 5 mm.

5. The micro-nano bubble water preparation device according to claim 3, characterized in that: A drainage tube (52) is provided below the drainage port (51), and the length of the drainage tube (52) is 2 to 5 times the inner diameter of the drainage tube (52).

6. The micro-nano bubble water preparation device according to claim 3, characterized in that: The water inlet channel (2) comprises a water inlet section (21) and an acceleration section (22) located below the water inlet section (21); the flow area of ​​the acceleration section (22) is smaller than the flow area of ​​the water inlet section (21); and the outlet of the acceleration section (22) is the jet port (24).

7. The micro-nano bubble water preparation device according to claim 3, characterized in that: The diameter of the drainage port (51) is greater than the diameter of the jet port (24).

8. The micro-nano bubble water preparation device according to claim 3, characterized in that: A buffer rib (6) is provided in the air intake cavity (12), and an opening of the air intake channel (3) facing the air intake cavity (12) is arranged opposite to the buffer rib (6).

9. The micro-nano bubble water preparation device according to claim 8, characterized in that: The buffer rib (6) is arranged around the drainage port (51) and the jet port (24); an air inlet (61) is provided on the buffer rib (6) for connecting the air inlet cavity (12) and the drainage port (51); the air inlet (61) is staggered with the opening of the air inlet channel (3) toward the air inlet cavity (12).

10. The micro-nano bubble water preparation device according to claim 8, characterized in that: The inner wall of the air intake cavity (12) and / or the connection position between the buffer rib (6) and the inner wall of the air intake cavity (12) are smoothly transitioned.

11. The micro-nano bubble water preparation device according to claim 3, characterized in that: The micro-nano bubble water preparation device further comprises an air pump (73) arranged on the air inlet channel (3), and the air pump (73) is used to pump gas into the air inlet channel (3).

12. The micro-nano bubble water preparation device according to claim 11, characterized in that: The micro-nano bubble water preparation device further comprises a one-way valve (71), which is arranged on the air inlet channel (3) and located between the air pump (73) and the air inlet chamber (12). When the pressure in the air inlet chamber (12) is negative, the one-way valve (71) opens.

13. The micro-nano bubble water preparation device according to any one of claims 1-2, characterized in that: The micro-nano bubble water preparation device further comprises a bubble releasing mechanism (8), wherein the bubble releasing mechanism (8) is connected to the gas-liquid mixing chamber (11), and the pressure in the bubble releasing mechanism (8) is lower than the pressure in the gas-liquid mixing chamber (11).

14. The micro-nano bubble water preparation device according to claim 13, characterized in that: The bubble releasing mechanism (8) comprises a bubble releasing channel (81) and a bubble releasing cavity (82), wherein the bubble releasing channel (81) communicates with the gas-liquid mixing cavity (11) and the bubble releasing cavity (82), and a bubble releasing sheet (83) is provided in the bubble releasing cavity (82), and the bubble releasing sheet (83) is used for cutting and mixing the liquid from the gas-liquid mixing cavity (11).

15. The micro-nano bubble water preparation device according to claim 14, characterized in that: The bubble release channel (81) comprises a gradient section (811) and a connecting section (812); the two ends of the gradient section (811) are respectively connected to the gas-liquid mixing chamber (11) and one end of the connecting section (812); the other end of the connecting section (812) is connected to the bubble release chamber (82); and the flow area of ​​the gradient section (811) gradually decreases in the direction from the gas-liquid mixing chamber (11) to the connecting section (812).

16. The device for preparing micro-nano bubble water according to any one of claims 1 to 2, characterized in that: The micro-nano bubble water preparation device further comprises a booster pump (72), and the booster pump (72) is used to pump water into the air inlet channel (3).

17. A water supply device, characterized in that: The device comprises the micro-nano bubble water preparation device according to any one of claims 1 to 16.

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