Micro-nano bubble liquid generating system and water heater

Abstract

The application discloses a kind of micro-nano bubble liquid generation system and water heater, wherein, micro-nano bubble liquid generation system includes dissolved air device, pressure regulating valve assembly and pump body, dissolved air device has mixing chamber in it, and gas path and flow path are formed on it and are communicated with mixing chamber, one end of confluence flow path is communicated with inlet gas path and inlet liquid flow path, and the other end is communicated with mixing chamber, pressure regulating valve assembly is arranged on inlet liquid flow path for adjusting the liquid flow size of inlet liquid flow path, pump body is arranged on confluence flow path, in the state of air intake, pressure regulating valve assembly reduces the liquid flow of inlet liquid flow path, pump body runs and separates the liquid of inlet liquid flow path to make inlet gas path air intake to mixing chamber, in the state of dissolved air, pressure regulating valve assembly increases the flow of inlet liquid flow path, pump body stops running, and the gas of mixing chamber is dissolved in liquid to form dissolved air liquid.The micro-nano bubble liquid generation system of the embodiment of the application can realize efficient air intake, and there is no case of no water available in the process of air intake.

Description

[0001] Cross-reference to related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202120289186.2, filed on February 1, 2021, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This invention belongs to the field of household appliance technology, specifically a micro-nano bubble liquid generation system and a water heater. Background Technology

[0004] Micro-nano bubble water refers to water containing a large number of tiny bubbles with a diameter of 0.1–50 μm. Micro-nano bubble water is currently widely used in industrial water treatment and water pollution control, and is now increasingly being applied in daily life and beauty products.

[0005] Due to their small size, micro- and nano-bubbles exhibit characteristics distinct from ordinary bubbles, such as longer existence time, higher interfacial zeta potential, and higher mass transfer efficiency. Utilizing these properties, micro- and nano-bubble water can be produced for the degradation of pesticide residues in fruits and vegetables, and can also kill bacteria and some viruses. It also has some effect on antibiotics and hormones in certain meats.

[0006] Currently, based on the bubble generation mechanism, micro-nano bubble water generation technology can be divided into: pressurized dissolved air method, gas-induced method, and electrolytic extraction method. Although the bubbles formed by traditional pressurized dissolved air method are small, they require a booster pump for pressurization, resulting in a large system size, significant operating noise and vibration, which is not conducive to application in small equipment. Furthermore, it is costly and has a low cost-performance ratio; the series operation and control are also more complex, resulting in a poor user experience.

[0007] In some cases, the flow of gas is difficult during the generation of micro-nano bubble water, which makes it impossible to effectively integrate enough gas into the liquid. This results in poor quality and low generation efficiency of the generated micro-nano bubble liquid. Furthermore, during the process of dissolving the gas in the liquid to form dissolved gas liquid, the water terminal usually cannot dispense water, causing users to have to wait for a period of time before they can use the micro-nano bubble water. Summary of the Invention

[0008] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a micro / nano bubble liquid generation system, which features stable and controllable pressure, high dissolved gas liquid generation efficiency, and simple system operation, thus solving the technical problems of large volume, high cost, and low cost-effectiveness of traditional pressurized dissolved gas systems in the prior art.

[0009] The application also aims to provide a water heater with the micro-nano bubble liquid generating system.

[0010] The micro-nano bubble liquid generating system according to the embodiments of the application comprises a gas dissolving device, a mixing cavity is formed in the gas dissolving device, an air inlet gas channel, a liquid inlet channel, a converging channel and a liquid outlet channel are formed on the gas dissolving device and communicate with the mixing cavity, one end of the air inlet gas channel is connected with an air source, one end of the liquid inlet channel is connected with a water source, the other ends of the air inlet gas channel and the liquid inlet channel both communicate with the converging channel, and the other end of the converging channel communicates with the mixing cavity; a pressure regulating valve assembly is arranged on the liquid inlet channel, and the pressure regulating valve assembly is used to adjust the liquid flow of the liquid inlet channel; and a pump body is arranged on the converging channel, the gas dissolving device has an air inlet state and a gas dissolving state, in the air inlet state, the pressure regulating valve assembly reduces the liquid flow of the liquid inlet channel, and the pump body operates to draw liquid from the liquid inlet channel to make the air inlet gas channel inlet air to the mixing cavity; in the gas dissolving state, the pressure regulating valve assembly increases the liquid flow of the liquid inlet channel, and the pump body stops operating, and the gas in the mixing cavity is dissolved in liquid to form a gas dissolved liquid.

[0011] In the micro-nano bubble liquid generating system according to the embodiments of the application, the pump body cooperates with the pressure regulating valve assembly to regulate the pressure of the liquid inlet channel, the gas in the air source can be directly inlet to the mixing cavity through the air inlet gas channel under the premise of controlling the stable pressure of the liquid inlet channel, so that the mixing cavity is filled with gas, and the air inlet efficiency is improved; and after the mixing cavity is filled with more gas, the liquid flow of the liquid inlet channel is increased to make the liquid in the water source directly inlet to the mixing cavity through the liquid inlet channel to stably increase the pressure in the mixing cavity, so that the gas in the mixing cavity is quickly dissolved in liquid to form a gas dissolved liquid, and the water end does not appear water break during the whole process, which provides guarantee for subsequent formation of micro-nano bubble water. In the application, the pump body is arranged on the converging channel, so that the pump body is located upstream of the mixing cavity, the liquid pumping pressure of the pump body is reduced, and the service life of the pump body is prolonged.

[0012] In the micro-nano bubble liquid generating system according to some embodiments of the application, the pressure regulating valve assembly comprises a flow regulating valve and a pressure stabilizing valve arranged in parallel, the flow regulating valve is used to adjust the liquid flow of the liquid inlet channel, the flow regulating valve reduces the liquid flow of the liquid inlet channel, and the pump body operates to make the gas dissolving device in the air inlet state.

[0013] According to some embodiments of the micro-nano bubble liquid generating system, the pressure regulating valve assembly comprises a normally open valve or a normally closed valve for regulating the on-off of the liquid and a pressure stabilizing valve arranged in parallel with the normally open valve or the normally closed valve; the pressure stabilizing valve is opened while the normally open valve is closed or the normally closed valve is closed, and the pump body is operated to make the gas dissolving device in the gas intake state.

[0014] Optionally, the liquid inlet flow path comprises a first liquid inlet flow path and a second liquid inlet flow path connected on the liquid inlet side, the liquid outlet end of the first liquid inlet flow path is communicated with the gas outlet end of the gas inlet flow path to the converging flow path, the first liquid inlet flow path is provided with a flow regulating valve, a normally open valve or a normally closed valve, and the second liquid inlet flow path is provided with the pressure stabilizing valve; the liquid outlet side of the second liquid inlet flow path is connected to the converging flow path or the liquid outlet flow path.

[0015] Optionally, when the liquid outlet side of the second liquid inlet flow path is connected to the converging flow path, the liquid outlet side is located on the front side or the rear side of the pump body.

[0016] According to some embodiments of the micro-nano bubble liquid generating system, the micro-nano bubble liquid generating system further comprises a one-way valve arranged on the gas inlet flow path to make the gas flow from the gas inlet flow path to the mixing chamber in one direction.

[0017] Optionally, the micro-nano bubble liquid generating system further comprises an air charging pump arranged on the gas inlet flow path, and the air charging pump can charge the mixing chamber with air.

[0018] According to some embodiments of the micro-nano bubble liquid generating system, the micro-nano bubble liquid generating system further comprises a water flow sensor arranged on the liquid inlet flow path to detect the liquid inlet flow rate of the liquid inlet flow path.

[0019] Optionally, the micro-nano bubble liquid generating system further comprises a controller in communication connection with the water flow sensor, the pressure regulating valve assembly and the pump body, respectively, the controller is used to control the pressure regulating valve assembly to be closed or to reduce the opening degree when the cumulative water flow of the water flow sensor is greater than a first preset flow rate or the cumulative use time of the water flow sensor is greater than a first preset time, and the controller controls the pump body to operate to supplement the mixing chamber with air.

[0020] Optionally, the micro-nano bubble liquid generating system further comprises a liquid level sensor in communication connection with the controller, the liquid level sensor is used to detect the liquid level height of the liquid in the mixing chamber, and the controller receives the signal of the liquid level height.

[0021] Optionally, the liquid level sensor is arranged at a lower portion of the mixing chamber, and the controller is configured to control the pressure regulating valve assembly to reduce flow or close and the pump body to operate when the air intake signal is received; or the liquid level sensor is arranged above a middle portion of the mixing chamber, and the controller is configured to control the gas dissolving device to enter an air intake state when the liquid level height is higher than a first preset liquid level height threshold.

[0022] Optionally, when the liquid level sensor is arranged at the lower portion of the mixing chamber, the controller is further configured to control the pump body to stop operating and control the pressure regulating valve assembly to increase flow or open to enter a gas dissolving state when the liquid level height is within a second preset liquid level height threshold.

[0023] Optionally, the micro-nano bubble liquid generating system further comprises a water outlet switch arranged on the liquid outlet flow path, the water outlet switch being in communication connection with the controller, and the controller controls the mixing chamber to be in an air intake state when the water outlet switch is opened and water flow is detected by the water flow sensor.

[0024] Optionally, the controller is configured to control the mixing chamber to be in an air intake state again when the water outlet switch is closed for more than a second preset time and then opened again.

[0025] Optionally, the controller controls the mixing chamber to be in an air intake state again when the water flow sensor accumulates water flow of more than a second preset flow from the last time the water outlet switch is opened to the time the water outlet switch is closed and then opened again.

[0026] According to some embodiments of the present application, the micro-nano bubble liquid generating system further comprises a micro-nano bubble generator connected to the liquid outlet flow path of the gas dissolving device.

[0027] Optionally, the micro-nano bubble liquid generating system further comprises a water outlet element connected to an end of the liquid outlet flow path, and the micro-nano bubble generator is arranged in the water outlet element, and the water outlet element is a shower head or a faucet.

[0028] According to an embodiment of the present application, a water heater comprises the aforementioned micro-nano bubble liquid generating system, and a heating device arranged on the converging flow path between the pump body and the gas dissolving device, or arranged on the liquid outlet flow path.

[0029] The water heater according to the embodiment of the present application adopts the aforementioned micro-nano bubble liquid generating system, and the heating device is arranged on the converging flow path or the liquid outlet flow path of the micro-nano bubble liquid generating system, so that the heating device and the micro-nano bubble liquid generating system cooperate to quickly form the gas dissolved liquid with a certain temperature, and when the heating device is arranged on the converging flow path, the heating device is located between the pump body and the gas dissolving device, so as to prevent the high-temperature hot water from impacting the pump body, prolong the service life of the pump body, and improve the user experience.

[0030] Additional aspects and advantages of the present application will become apparent from the following description, which is provided for by way of example of embodiments thereof. BRIEF DESCRIPTION OF DRAWINGS

[0031] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0032] Figure 1 The schematic diagram of the micro-nano bubble liquid generating system according to some embodiments of the first aspect of the present application, wherein the liquid outlet side of the second liquid inlet flow path is connected to the converging flow path and located at the front side of the pump body.

[0033] Figure 2 The schematic diagram of the micro-nano bubble liquid generating system according to some embodiments of the first aspect of the present application, wherein the liquid outlet side of the second liquid inlet flow path is connected to the converging flow path and located at the rear side of the pump body.

[0034] Figure 3 The schematic diagram of the micro-nano bubble liquid generating system according to some embodiments of the first aspect of the present application, wherein the liquid outlet side of the second liquid inlet flow path is connected to the converging flow path and located at the rear side of the pump body.

[0035] Figure 4 The schematic diagram of the control flow of the micro-nano bubble liquid generating system according to some embodiments of the first aspect of the present application.

[0036] Figure 5 The schematic diagram of the control flow of the micro-nano bubble liquid generating system according to some embodiments of the second aspect of the present application.

[0037] The pressure regulating valve assembly includes a normally open valve.

[0038] Figure 6 The schematic diagram of the micro-nano bubble liquid generating system according to some embodiments of the third aspect of the present application, wherein the liquid outlet side of the second liquid inlet flow path is connected to the converging flow path and located at the front side of the pump body, and the liquid level sensor is arranged at the lower part of the mixing cavity.

[0039] Figure 7This is a schematic diagram of a micro / nano bubble liquid generation system according to some embodiments of the third aspect of the present invention, wherein the outlet side of the second liquid inlet flow path is connected to the confluence flow path and is located on the rear side of the pump body, and the liquid level sensor is located at the lower part of the mixing chamber.

[0040] Figure 8 This is a schematic diagram of a micro / nano bubble liquid generation system according to some embodiments of the third aspect of the present invention, wherein the liquid outlet side of the second liquid inlet flow path is connected to the liquid outlet flow path, and the liquid level sensor is located at the lower part of the mixing chamber.

[0041] Figure 9 This is a schematic diagram of the control flow of a micro / nano bubble liquid generation system according to some embodiments of the third aspect of the present invention.

[0042] Figure 10 This is a schematic diagram of the control flow of a micro / nano bubble liquid generation system according to some embodiments of the fourth aspect of the present invention.

[0043] The pressure regulating valve assembly includes a normally open valve, and the liquid level sensor is located at the bottom of the mixing chamber.

[0044] Figure 11 This is a cross-sectional view of a flow regulating valve according to some embodiments of the present invention when increasing the liquid flow rate in the inlet flow path.

[0045] Figure 12 This is a cross-sectional view of a flow regulating valve in some embodiments of the present invention when reducing the liquid flow rate in the inlet flow path.

[0046] Figure 13 This is a cross-sectional view of a pressure regulating valve assembly integrated in some embodiments of the present invention.

[0047] Figure 14 for Figure 13 A cross-sectional view of the medium flow regulating valve when reducing the liquid flow rate in the inlet path.

[0048] Figure 15 for Figure 13 A cross-sectional view of the medium flow regulating valve when increasing the liquid flow rate in the inlet path.

[0049] Figure 16 for Figure 13 Cross-sectional view of the medium pressure regulating valve when it is open.

[0050] Figure 17 for Figure 13 Cross-sectional view of the medium pressure regulating valve when it is closed.

[0051] Figure 18 This is a schematic diagram of a partial flow path in a water heater according to some embodiments of the present invention. The heating device is located between the pump body and the dissolved air device.

[0052] Figure 19Fig. 2 is a schematic diagram of a partial flow path of a water heater according to another embodiment of the present application. In this embodiment, the heating device is arranged on the liquid outlet flow path after the air dissolving device.

[0053] Reference signs:

[0054] 100, micro-nano bubble liquid generating system;

[0055] 1, air dissolving device; 13, liquid outlet; 16, mixing chamber; 161, liquid level sensor;

[0056] 2, power supply device; 3, controller; 4, water outlet; 41, micro-nano bubble generator;

[0057] 5, air inlet flow path; 51, one-way valve; 52, air charging pump; 53, pump body; 6, liquid outlet flow path; 61, water outlet switch;

[0058] 7, liquid inlet flow path;

[0059] 70, pressure regulating valve assembly;

[0060] 78, flow regulating valve;

[0061] 781, valve housing; 7811, valve inlet; 7812, valve outlet;

[0062] 782, flow stabilizing assembly; 7821, flow stabilizing valve core; 7822, flow stabilizing valve body;

[0063] 783, driving assembly; 7831, driving member; 7832, blocking member;

[0064] 72, pressure stabilizing valve;

[0065] 721, pressure stabilizing housing; 722, pressure stabilizing inlet; 723, pressure stabilizing outlet; 724, regulating assembly; 791, first three-way joint; 792, second three-way joint;

[0066] 71, water flow sensor; 75, first liquid inlet flow path; 76, second liquid inlet flow path; 761, liquid inlet one-way valve;

[0067] 8, merging flow path; 82, merging port;

[0068] 1000, water heater; 400, heating device. DETAILED DESCRIPTION

[0069] Embodiments of the present application are described in detail below with reference to the attached drawings, which show by way of example, embodiments in which like numerals indicate like elements or elements having the same or similar function. The embodiments described below are exemplary only, and are not to be construed as limiting the present application.

[0070] The micro / nano bubble liquid generation system 100 of the present invention is described below with reference to the accompanying drawings.

[0071] According to an embodiment of the present invention, a micro / nano bubble liquid generation system 100 is provided, such as... Figures 1-3 The first aspect example and Figures 6-8 The third aspect of the example includes: a dissolved gas device 1, a pressure regulating valve assembly 70, and a pump body 53.

[0072] The dissolved air device 1 has a mixing chamber 16. The dissolved air device 1 has an air inlet path 5, a liquid inlet path 7, a confluence path 8, and a liquid outlet path 6. The air inlet path 5, the liquid inlet path 7, the confluence path 8, and the liquid outlet path 6 are connected to the mixing chamber 16. One end of the air inlet path 5 is connected to a gas source, one end of the liquid inlet path 7 is connected to a water source, one end of the confluence path 8 connects the air inlet path 5 and the liquid inlet path 7, and the other end of the confluence path 8 connects to the mixing chamber 16.

[0073] In other words, one end of the air intake passage 5 is connected to the air source and the other end is connected to the confluence flow passage 8. The air intake passage 5 is used to directly introduce the gas in the air source into the confluence flow passage 8 to improve the air intake efficiency. One end of the liquid inlet flow passage 7 is connected to the water source and the other end is connected to the confluence flow passage 8. The liquid inlet flow passage 7 is used to directly introduce the liquid in the water source into the confluence flow passage 8 to improve the liquid inlet efficiency. Since one end of the confluence flow passage 8 is connected to both the air intake passage 5 and the liquid inlet flow passage 7, and the other end of the confluence flow passage 8 is connected to the mixing chamber 16, the air intake passage 5 and the liquid inlet flow passage 7 are connected to the mixing chamber 16 through the confluence flow passage 8. In this way, the liquid introduced into the confluence flow passage 8 through the liquid inlet flow passage 7 and the gas introduced into the confluence flow passage 8 through the air intake passage 5 can then enter the mixing chamber 16 through the confluence flow passage 8 to achieve the purpose of conveying gas and liquid towards the mixing chamber 16. After the gas and liquid are mixed into dissolved gas liquid in the mixing chamber 16, they are then conveyed to the water end through the liquid outlet flow passage 6.

[0074] The pressure regulating valve assembly 70 is installed on the liquid inlet flow path 7. The pressure regulating valve assembly 70 is mainly used to regulate the liquid flow rate of the liquid inlet flow path 7.

[0075] The pump body 53 is located on the confluence flow path 8. The gas dissolving device 1 has an air intake state and a gas dissolving state. In the air intake state, the pressure regulating valve assembly 70 reduces the liquid flow rate of the liquid inlet flow path 7, and the pump body 53 operates to draw away the liquid from the liquid inlet flow path 7, so that the air inlet flow path 5 enters the mixing chamber 16. In the gas dissolving state, the pressure regulating valve assembly 70 increases the flow rate of the liquid inlet flow path 7, the pump body 53 stops operating, and the gas in the mixing chamber 16 dissolves in the liquid to form a dissolved gas liquid.

[0076] That is, in the air intake state of the air dissolving device 1, the pressure regulating valve assembly 70 is used to reduce the liquid flow of the liquid inlet flow path 7, and the pump body 53 is operated, and in the air dissolving state of the air dissolving device 1, the pressure regulating valve assembly 70 is used to increase the flow of the liquid inlet flow path 7, and the pump body 53 stops operating.

[0077] From the above structure, the micro-nano bubble liquid generating system 100 of the embodiment of the application can ensure that the liquid and the gas can flow in the intended direction through the multiple flow paths (the air inlet flow path 5, the liquid outlet flow path 6, the liquid inlet flow path 7, and the merging flow path 8) connected with the mixing cavity 16, wherein the liquid inlet flow path 7 and the merging flow path 8 are used to transport the liquid to the mixing cavity 16; the air inlet flow path 5 and the merging flow path 8 are used to transport the gas to the mixing cavity 16; and the liquid outlet flow path 6 is used to guide the air dissolving liquid after mixing into the water end.

[0078] By arranging the pump body 53, when the liquid flow through the liquid inlet flow path 7 is reduced by the pressure regulating valve assembly 70, the amount of liquid flowing into the mixing cavity 16 from the liquid inlet flow path 7 is reduced, and the pump body 53 can quickly pump the liquid in the liquid inlet flow path 7, so that the pressure in the liquid inlet flow path 7 is reduced, thereby reducing the pressure at the rear end of the pressure regulating valve assembly 70, so that the air in the air inlet flow path 5 can flow smoothly to the pump body 53, and then enter the mixing cavity 16 through the pump body 53, thereby achieving the purpose of transporting the gas to the mixing cavity 16, completing the air intake process of the mixing cavity 16, and improving the air intake efficiency, and finally making the air dissolving device 1 contain more gas.

[0079] That is, the application adjusts the pressure in the liquid inlet flow path 7 by cooperating the pump body 53 and the pressure regulating valve assembly 70, so that the pressure at the liquid inlet end of the air dissolving device 1 is kept at a preset value, and the flow of the liquid in the liquid inlet flow path 7 and the air pressure in the mixing cavity 16 are changed.

[0080] When the liquid flow through the liquid inlet flow path 7 is reduced by the pressure regulating valve assembly 70, the amount of liquid flowing into the mixing cavity 16 from the liquid inlet flow path 7 is reduced, and the pump body 53 pumps the liquid in the liquid inlet flow path 7 to the air dissolving device 1, at this time, the air pressure in the merging flow path 8 and the liquid inlet flow path 7 is lower than that in the air inlet flow path 5, so that the gas in the air inlet flow path 5 enters the mixing cavity 16 through the merging flow path 8, thereby achieving the purpose of quickly air intake to the air dissolving device 1, making the air dissolving device 1 contain the required gas, and completing the air intake process of the mixing cavity 16.

[0081] That is, the application sets the pump body 53 on the merging flow path 8, which greatly facilitates the air intake of the air dissolving device 1, improves the air intake efficiency, realizes efficient air intake, and improves the generation quality and efficiency of the subsequent micro-nano bubble liquid.​​​​​

[0082] At the same time, since there is always some liquid in the gas dissolving device 1, and the gas dissolving device 1 always keeps liquid inlet, the liquid can be discharged from the liquid outlet flow path 6 to the water end during the gas inlet process of the gas dissolving device 1, preventing water interruption.

[0083] When the gas dissolving device 1 is filled with more gas, the pump body 53 stops running, and the pressure regulating valve assembly 70 switches to increase the flow of the liquid inlet flow path 7. At this time, the amount of liquid flowing into the mixing chamber 16 is greater than the amount of liquid flowing out, so that more liquid quickly flows into the mixing chamber 16, the pressure in the mixing chamber 16 is stably increased, and then the gas filled in the gas dissolving device 1 is quickly dissolved in the liquid to form a gas dissolving liquid, which provides a reliable guarantee for the subsequent further generation of micro-nano bubble water.

[0084] It can be seen that, in the present application, through the cooperation of the gas inlet gas path 5, the pressure regulating valve assembly 70 and the pump body 53, the gas dissolving device 1 is greatly facilitated to carry out gas inlet and gas dissolving, and it can also be ensured that water is always supplied to the user.

[0085] It is worth noting that, by arranging the pump body 53 on the confluence flow path 8, that is, on the upstream of the gas dissolving device 1, only the liquid in the liquid inlet flow path 7 needs to be pumped out during the operation of the pump body 53 to pump out the liquid in the liquid inlet flow path 7, without the need to pump out the liquid in the gas dissolving device 1, thereby reducing the liquid pumping pressure of the pump body 53 and prolonging the service life of the pump body 53. Wherein, the upstream here refers to that, in the process of liquid inlet to the gas dissolving device 1, the liquid first flows through the pump body 53 and then flows into the gas dissolving device 1.

[0086] In addition, since the pressure regulating valve assembly 70 for adjusting the flow of liquid flowing through the liquid inlet flow path 7 is arranged, the size of the liquid flow through the liquid inlet flow path 7 can be switched at any time through the pressure regulating valve assembly 70 during the use of the micro-nano bubble liquid generating system 100, so that the gas dissolving device 1 is switched between the gas inlet state and the gas dissolving state, the gas is filled in the middle, and the high-quality micro-nano bubble liquid is produced.

[0087] It can be understood that, compared with the prior art, the micro-nano bubble liquid generating system 100 of the present application has high gas inlet efficiency, simple gas inlet and gas dissolving process control, no liquid interruption at the water end, can fill gas in the middle, no water flow closing, good user experience, improves the whole machine start-up speed, and improves the performance-price ratio of the product; simple structure, low cost; modular, small volume, compact arrangement, convenient for use on small equipment and can change the occupied volume to meet different use scenarios.

[0088] It should be noted that the liquid in the application can be tap water with certain impurities and low temperature, or pure water purified by the purification device, or relatively pure water supplied in a domestic water tank, or water doped with certain chemical substances, and should be widely understood and should not be narrowly limited to water described in the chemical field.

[0089] Optionally, the liquid inlet flow path 7, the liquid outlet flow path 6 and the merging flow path 8 can be a liquid inlet pipe, and correspondingly, the gas inlet path 5 can form a gas inlet pipe.

[0090] Optionally, as shown in the first aspect example in the Figures 1-3 and the third aspect example in the Figures 6-8 , the gas dissolving device 1 is formed with a merging port 82 and a liquid outlet 13, one end of the merging flow path 8 is connected with the liquid inlet flow path 7 and the gas inlet path 5, the other end of the merging flow path 8 is used to communicate with the merging port 82, and the merging flow path 8 and the merging port 82 cooperate to introduce the liquid and the gas into the mixing cavity 16; one end of the liquid outlet flow path 6 is connected with the liquid outlet 13, and the other end of the liquid outlet flow path 6 is connected with a water end, and the liquid outlet flow path 6 is used to guide the gas-dissolved liquid in the mixing cavity 16 to the water end.

[0091] Optionally, as shown in the first aspect example in the Figures 1-3 , the liquid outlet 13 is formed at the bottom of the gas dissolving device 1, and the merging port 82 is formed at the top or upper portion of the gas dissolving device 1. That is, the merging port 82 can be formed at the top of the gas dissolving device 1, the merging port 82 can also be formed at the upper portion of the gas dissolving device 1, and the liquid outlet 13 is formed at the bottom of the gas dissolving device 1. Thus, different use scenarios can be met according to different user needs, and flexibility and convenience are achieved.

[0092] Advantageously, as shown in the first aspect example in the Figures 1-3 , the merging port 82 is formed at the top of the gas dissolving device 1, which can improve the water flow rate, increase the air bubble content of the air bubble mixed flow, and has a simple structure and is convenient to assemble; the liquid outlet 13 is formed at the bottom of the gas dissolving device 1, which utilizes the gravity of water and the pressure in the gas dissolving device 1, and without additional water flow components, the water can flow out smoothly, and there is no long-term retention of water affecting water quality and harming human health.

[0093] It should be noted that only one merging port 82 is provided in the application to communicate with the mixing cavity 16 of the gas dissolving device 1. Thus, whether liquid or gas flows through the merging port 82 to the mixing cavity 16, compared with the prior art in which a separate liquid inlet port and a gas inlet port are provided at the top of the gas dissolving device 1, the application saves the ports that need to be opened on the gas dissolving device 1, improves the sealing performance of the gas dissolving device 1, and simplifies the structure of the gas dissolving device 1.

[0094] Optionally, the position of the merging port 82 is provided with a jet member for jetting into the dissolved air device 1, and / or the position of the merging port 82 is provided with a plurality of liquid inlet holes arranged at intervals. That is, it can be that the jet member is arranged at the position of the merging port 82 of the dissolved air device 1 to jet into the mixing cavity 16, or a plurality of liquid inlet holes arranged at intervals can be arranged at the position of the merging port 82, or both the jet member and the plurality of liquid inlet holes can be arranged at the position of the merging port 82. In this way, when the liquid enters the dissolved air device 1, the liquid flow rate increases, the contact area between the liquid and the air is increased, and the air bubbles in the dissolved air device 1 are more dense, thereby providing a stable guarantee for the subsequent formation of micro-nano bubble water.

[0095] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0096] In some embodiments of the present application, as shown in the first aspect example in Figures 1-3 and the third aspect example in Figures 6-8 , the pressure regulating valve assembly 70 includes a flow regulating valve 78 and a pressure stabilizing valve 72, and the pressure stabilizing valve 72 and the flow regulating valve 78 are arranged in parallel, and the flow regulating valve 78 is used to adjust the liquid flow size of the liquid inlet flow path 7. That is, the pressure regulating valve assembly 70 of the present application adjusts the liquid flow size of the liquid inlet flow path 7 mainly through the flow regulating valve 78, and the flow regulating valve 78 cooperates with the pump body 53, so that the dissolved air device 1 can be switched between the air inlet state and the dissolved air state, while improving the quality of the generated micro-nano bubble liquid and also ensuring continuous water supply at the water use end.

[0097] The pressure stabilizing valve 72 is mainly used to stabilize the water inlet pressure, and when the water pressure of the tap water is unstable, the pressure stabilizing valve 72 can stabilize the water pressure of the tap water to be not greater than a preset water pressure value, thereby ensuring the water pressure stability of the micro-nano bubble liquid generating system 100 and improving the safety and reliability of the micro-nano bubble liquid generating system 100. The pressure stabilizing valve 72 can also ensure the pressure of the liquid inlet end of the dissolved air device 1, so that the dissolved air device 1 can inlet liquid under a certain pressure; by selecting pressure stabilizing valves 72 with different pressures, smooth air inlet of the air inlet path 5 can also be achieved.

[0098] In a specific example, if the water outlet pressure of the pressure stabilizing valve 72 is P1 and the air outlet pressure of the air inlet path 5 is P2, by controlling P2≥P1, smooth liquid inlet of the liquid inlet flow path 7 can be achieved while ensuring smooth air inlet of the air inlet path 5.

[0099] Optionally, the flow regulating valve 78 reduces the flow of liquid flowing through the liquid inlet flow path 7, and the pump body 53 operates so that the gas dissolving device 1 is in the gas inlet state. Thus, the purpose of rapidly inlets gas to the gas dissolving device 1 is achieved, and the gas dissolving device 1 is filled with the required gas; correspondingly, the flow regulating valve 78 increases the flow of the liquid inlet flow path 7 and the pump body 53 stops operating, and the gas in the mixing chamber 16 dissolves in the liquid and forms the gas dissolved liquid, so as to facilitate the subsequent generation of high-quality micro-nano bubble liquid.

[0100] It should be noted that the flow regulating valve 78 and the pressure stabilizing valve 72 are connected in parallel, and in specific examples, as shown in the first aspect example in the Figures 1-3 and the third aspect example in the Figures 6-8 , the water inlet ends of the pressure stabilizing valve 72 and the flow regulating valve 78 are connected and connected to the water source through the pipeline, and the water outlet ends of the pressure stabilizing valve 72 and the flow regulating valve 78 can be connected to the combined flow path 8 through the pipeline after being connected (as shown in Figure 1 and Figure 6 ), or the water outlet ends of the pressure stabilizing valve 72 and the flow regulating valve 78 can be respectively connected to the combined flow path 8 through the pipeline (as shown in Figure 2 and Figure 7 ), or the water outlet end of the pressure stabilizing valve 72 can be connected to the liquid outlet flow path 6 through the pipeline, and the water outlet end of the flow regulating valve 78 can be connected to the combined flow path 8 through the pipeline (as shown in Figure 3 and Figure 8 ), so as to ensure that the gas dissolving device 1 has a certain amount of liquid and the water inlet end is constantly supplied with water.

[0101] Optionally, when the pressure stabilizing valve 72 and the flow regulating valve 78 are connected in parallel, the outlet flow of the liquid inlet flow path 7 is the sum of the outlet flow of the flow regulating valve 78 and the outlet flow of the pressure stabilizing valve 72 when the pressure stabilizing valve 72 operates; when the pressure stabilizing valve 72 is closed, the outlet flow of the liquid inlet flow path 7 is the outlet flow of the flow regulating valve 78.

[0102] Optionally, the flow regulating valve 78 can be a continuously adjustable opening degree flow valve, and the structure of the continuously adjustable opening degree flow valve can realize the change of the flow in the passage through the rotation of the valve disc. The specific rotation implementation form of the valve disc is not described here. It can also be a flow switching valve capable of realizing multi-gear outlet flow output variable.

[0103] Next, a multi-gear outlet flow output variable flow switching valve will be described in detail. The flow switching valve mainly outputs two gears of outlet flow.

[0104] As shown in Figure 11 and Figure 12As shown, the flow switching valve comprises a valve housing 781, a flow stabilizing assembly 782 and a driving assembly 783, the valve housing 781 has a valve inlet 7811 and a valve outlet 7812 which are connectable. The flow stabilizing assembly 782 and the driving assembly 783 are both arranged in the valve housing 781 and divide the valve housing 781 into a first chamber and a second chamber, the first chamber is in communication with the valve inlet 7811, the second chamber is in communication with the valve outlet 7812, the middle part of the flow stabilizing assembly 782 forms a first water passage which is in communication with the first chamber and the second chamber, one end of the flow stabilizing assembly 782 forms a second water passage which is in communication with the first chamber and the second chamber; the driving assembly 783 can control the opening and closing of the first water passage or the second water passage, thereby realizing the adjustment of the water output of the valve outlet 7812.

[0105] Optionally, as shown in Figure 11 and Figure 12 , the flow stabilizing assembly 782 comprises a flow stabilizing valve core 7821 and a flow stabilizing valve body 7822, the flow stabilizing valve body 7822 is arranged in the valve housing 781, and the two ends of the flow stabilizing valve body 7822 are respectively towards the valve inlet 7811 and the valve outlet 7812; the flow stabilizing valve core 7821 is arranged in the flow stabilizing valve body 7822, and the flow stabilizing valve core 7821 forms a first water passage therein; the edge of the flow stabilizing valve core 7821 is close to the driving assembly 783 and forms a second water passage, when the output end of the driving assembly 783 moves towards the second water passage, the second water passage is closed, so that the liquid entering from the valve inlet 7811 can only flow out from the first water passage to the valve outlet 7812, at this time, the flow switching valve is in a small water pressure state, and the flow switching valve outputs a small flow, which is beneficial to the air inlet of the gas dissolving device 1; when the output end of the driving assembly 783 moves away from the second water passage, the second water passage is opened, so that the liquid entering from the valve inlet 7811 can not only flow out from the first water passage to the valve outlet 7812, but also flow out from the second water passage to the valve outlet 7812, at this time, the flow switching valve is in a large water pressure state, and the flow switching valve outputs a large flow, which is beneficial to the gas dissolving of the gas dissolving device 1.

[0106] Optionally, as shown in Figure 11 and Figure 12 , the driving assembly 783 comprises a driving member 7831 and a blocking member 7832, the blocking member 7832 is connected to the output end of the driving member 7831, and the blocking member 7832 can move relative to the second water passage to open or close the second water passage. In the design structure and size, the external contour of the blocking member 7832 should be completely blocked to the second water passage, and when the blocking member 7832 is closed on the second water passage, the second water passage can be completely blocked.

[0107] Optionally, the driving member 7831 can be a cylinder, a stepping motor or an electric push rod, as long as it can realize the step movement of the blocking member 7832, which is not limited here.

[0108] Optionally, the blocking member 7832 can be a separation plate, a diaphragm, a sealing plug or the like, as long as it can realize the plugging of the second water passage, which is not limited here.

[0109] In some examples, the pressure stabilizing valve 72 and the flow regulating valve 78 of the present application can be integrated, and an integrated adjustable flow valve with the pressure stabilizing valve 72 and the flow regulating valve 78 integrated will be described below.

[0110] As shown in Figure 13 , when the pressure stabilizing valve 72 and the flow regulating valve 78 are integrated on the liquid inlet flow path 7, the integrated adjustable flow valve has a valve water inlet end and a valve water outlet end. The liquid entering from the valve water inlet end can flow to the valve water outlet end through the opened pressure stabilizing valve 72, or the liquid entering from the valve water inlet end can flow to the valve water outlet end through the flow regulating valve 78. Since the flow regulating valve 78 can always maintain a certain flow capacity, the valve water outlet end of the integrated adjustable flow valve always has a certain water outlet flow.

[0111] Taking the flow regulating valve 78 as an example, assuming that the flow of the flow switching valve under small water pressure is L 小 , the flow of the flow switching valve under large water pressure is L 大 , the outlet liquid pressure of the flow switching valve is P 阀 , the outlet liquid flow of the flow switching valve is L 阀 , the pressure of the pressure stabilizing valve 72 is P 稳压 , the outlet liquid flow of the pressure stabilizing valve 72 is L 稳压 , the outlet liquid pressure of the integrated adjustable flow valve is P 出 , and the outlet liquid flow of the integrated adjustable flow valve is L 出 .

[0112] When the integrated adjustable flow valve is in a steady flow and pressure state or a small flow state, the driving assembly 783 closes the second water passage of the flow switching valve, so that the liquid can only flow out through the first water passage and not through the second water passage, at this time L 阀 = L 小 ; when the designed P 稳压 ≥ P 阀 , the pressure stabilizing valve 72 is opened, the final P 出 = P 稳压 , and L 出 = L 小 + L 稳压 ; when the designed P 稳压 < P 阀Then the pressure regulating valve 72 closes, and the final P 出 =P 阀 L 出 =L 小 .

[0113] When the integrated adjustable flow valve is in a high flow state, the drive component 783 opens the second water passage of the flow switching valve, so that the liquid can flow out not only through the first water passage but also through the second water passage. At this time, L can be obtained. 阀 =L 小 +L 大 When the design P 稳压 ≥P 阀 Then the pressure regulating valve 72 opens, and the final P 出 =P 稳压 L 出 =L 小 +L 大 +L voltage regulation; when the designed P 稳压 <P 阀 Then the pressure regulating valve 72 closes, and the final P 出 =P 阀 L 出 =L 小 +L 大 .

[0114] Therefore, the pressure regulating valve 72 of the present invention can not only stabilize the outlet pressure of the integrated adjustable flow valve when it is open, but also regulate the outlet flow rate of the integrated adjustable flow valve. When the pressure regulating valve 72 is closed, the outlet pressure of the integrated adjustable flow valve is adjusted by the outlet pressure of the flow switching valve, and the outlet flow rate of the integrated adjustable flow valve can form different large flow rates of water, so that the dissolved air device 1 can always maintain liquid inflow without being completely closed.

[0115] When the integrated adjustable flow valve is not used, two pipelines can be used to connect the pressure regulating valve 72 and the flow regulating valve 78 in parallel and set them separately.

[0116] Furthermore, such as Figure 13 As shown, the pressure regulating valve assembly 70 also includes a first three-way valve 791 and a second three-way valve 792. The inlet end of the first three-way valve 791 is connected to the liquid inlet flow path 7, and the two outlet ends of the first three-way valve 791 are respectively connected to the inlet side of the pressure regulating valve 72 and the inlet side of the flow regulating valve 78. The two inlet ends of the second three-way valve 792 are respectively connected to the outlet side of the flow regulating valve 78 and the outlet side of the pressure regulating valve 72, and the outlet end of the second three-way valve 792 is connected to the dissolved air device 1.

[0117] That is, the first three-way 791 is connected with the pressure stabilizing valve 72 and the flow regulating valve 78 respectively, and the two flow paths in the first three-way 791 are communicated with the pressure stabilizing valve 72 and the flow regulating valve 78 respectively, so as to realize that the liquid in the pressure stabilizing valve 72 can flow out through the first three-way 791, or the liquid in the flow regulating valve 78 can flow out through the first three-way 791, finally realizing that the whole integrated adjustable flow valve structure is compact, small and convenient to install, and the liquid outlet pressure regulating effect is good, the size of the liquid outlet flow is adjustable, the gas dissolving device 1 can realize rapid gas dissolving after gas inlet, and the water end can be ensured to be continuous water.

[0118] Similarly, the second three-way 792 is also connected with the pressure stabilizing valve 72 and the flow regulating valve 78 respectively, and the two flow paths of the second three-way 792 are communicated with the pressure stabilizing valve 72 and the flow regulating valve 78 respectively, so as to realize that the liquid in the pressure stabilizing valve 72 can flow out through the second three-way 792, or the liquid in the flow regulating valve 78 can flow out through the second three-way 792, finally realizing that the whole integrated adjustable flow valve structure is compact, small and convenient to install, and the liquid outlet pressure regulating effect is good, the size of the liquid outlet flow is adjustable, the gas dissolving device 1 can realize rapid gas dissolving after gas inlet, and the water end can be ensured to be continuous water.

[0119] In specific examples, the water inlet side of the first three-way 791 and the pressure stabilizing valve 72, and the water inlet side of the flow regulating valve 78 are threadedly connected or clamped, so as to realize the connection of the first three-way 791 and the pressure stabilizing valve 72.

[0120] In other examples, the integral connection of the first three-way 791 and the pressure stabilizing valve 72 can also be realized by welding, and the integral connection of the first three-way 791 and the flow regulating valve 78 can also be realized by welding. Similarly, the water outlet side of the second three-way 792 and the pressure stabilizing valve 72, and the water outlet side of the flow regulating valve 78 are threadedly connected or clamped, so as to realize the connection of the second three-way 792 and the pressure stabilizing valve 72. In other examples, the integral connection of the second three-way 792 and the pressure stabilizing valve 72 can also be realized by welding, and the integral connection of the second three-way 792 and the flow regulating valve 78 can also be realized by welding.

[0121] Optionally, the two water outlet ends of the first three-way 791 and the two water inlet ends of the second three-way 792 are coaxially arranged corresponding to each other, so as to reduce the resistance of water flow. In cooperation therewith, the water inlet side and the water outlet side of the pressure stabilizing valve 72 are coaxially arranged with the corresponding water outlet end of the first three-way 791 and the water inlet end of the second three-way 792, so as to facilitate connection and reduce water flow resistance; the water inlet side and the water outlet side of the flow regulating valve 78 are coaxially arranged with the corresponding water outlet end of the first three-way 791 and the water inlet end of the second three-way 792, so as to facilitate connection and reduce water flow resistance.

[0122] Of course, in other examples, the second three-way 792 can not be provided, the water outlet side of the flow regulating valve 78 is connected to the water outlet side of the pressure stabilizing valve 72 through a connecting pipe, and the water flow led out by the flow regulating valve 78 and the water flow led out by the pressure stabilizing valve 72 are combined in the connecting pipe and then flow out through the water outlet end of the connecting pipe, so as to realize that the whole integrated adjustable flow valve structure is compact, small and convenient to install, and the water end can be ensured to be continuous water.

[0123] As shown in Figure 14 and Figure 15 , a flow regulating valve 78 is provided in the integrated adjustable flow valve, which should match the size of the water outlet end of the aforementioned first three-way valve 791 and the size of the water inlet end of the second three-way valve 792, and a corresponding threaded structure or buckle groove matching structure is provided on the inner wall of the water inlet side and the water outlet side of the flow regulating valve 78.

[0124] Optionally, as shown in Figure 16 and Figure 17 , a structure diagram of a pressure stabilizing valve 72 provided in the integrated adjustable flow valve is shown. The pressure stabilizing valve 72 includes a pressure stabilizing housing 721, and a regulating assembly 724 provided in the pressure stabilizing housing 721. The pressure stabilizing housing 721 is provided with a pressure stabilizing inlet 722 and a pressure stabilizing outlet 723 in communication, and a pressure stabilizing flow channel in communication with the pressure stabilizing inlet 722 and the pressure stabilizing outlet 723. The regulating assembly 724 can conduct or block the pressure stabilizing flow channel when moving, so that when the regulating assembly 724 conducts the pressure stabilizing flow channel, the pressure stabilizing valve 72 is in an open state; and when the regulating assembly 724 blocks the pressure stabilizing flow channel, the pressure stabilizing valve 72 is in a closed state.

[0125] Advantageously, the regulating assembly 724 can include an electromagnetic valve rod assembly and an electromagnetic matching part, which form a magnetic attraction when energized to block the pressure stabilizing flow channel; and when the electromagnetic valve assembly and the electromagnetic matching part are de-energized, the pressure stabilizing flow channel is conducted.

[0126] In order to keep the electromagnetic valve rod assembly in a specific position, an elastic return member is provided between the electromagnetic valve rod assembly and the electromagnetic matching part, so that after de-energization, the elastic return force of the elastic return member drives the electromagnetic valve rod assembly to move away from the electromagnetic matching part to open the pressure stabilizing flow channel.

[0127] Of course, the regulating assembly 724 is not limited to the above-mentioned electromagnetic valve rod assembly and electromagnetic matching part, for example, in other examples, it can also be in the form of a structure driven by an electric push rod or a cylinder to drive a sealing plug, which is not limited here.

[0128] Optionally, the extension and retraction direction of the regulating assembly 724 is perpendicular to the line formed by the pressure stabilizing inlet 722 and the pressure stabilizing outlet 723, so that the pressure stabilizing flow channel can be reliably blocked when the posture of the regulating assembly 724 changes.

[0129] In some embodiments of the present application, the pressure regulating valve assembly 70 comprises a pressure stabilizing valve 72 and a normally open valve or a normally closed valve for regulating the liquid flow, and the pressure stabilizing valve 72 is arranged in parallel with the normally open valve or the normally closed valve. Here, it is referred to that the pressure regulating valve assembly 70 can comprise a pressure stabilizing valve 72 and a normally open valve, or comprise a pressure stabilizing valve 72 and a normally closed valve, when the pressure regulating valve assembly 70 comprises a pressure stabilizing valve 72 and a normally open valve, the normally open valve is used to regulate the liquid flow, and the pressure stabilizing valve 72 is arranged in parallel with the normally open valve; when the pressure regulating valve assembly 70 comprises a pressure stabilizing valve 72 and a normally closed valve, the normally closed valve is used to regulate the liquid flow, and the pressure stabilizing valve 72 is arranged in parallel with the normally closed valve. That is, the liquid flow of the liquid inlet flow path 7 regulated by the pressure regulating valve assembly 70 can also be realized by controlling the normally open valve or the normally closed valve, and the normally open valve or the normally closed valve cooperates with the pump body 53, so that the dissolved air device 1 can switch between the air inlet state and the air dissolving state, while improving the quality of the generated micro-nano bubble liquid, it can also ensure continuous water supply at the water use end.

[0130] Here, the pressure stabilizing valve 72 has the same effect as the pressure stabilizing valve 72 in the pressure regulating valve assembly 70 comprising the flow regulating valve 78 and the pressure stabilizing valve 72 arranged in parallel as described above, and will not be described here.

[0131] Optionally, when the pressure regulating valve assembly 70 comprises a normally open valve and a pressure stabilizing valve 72, the normally open valve is in an open state under the natural condition that the normally open valve is not powered or not in action, thereby increasing the flow of the liquid inlet flow path 7; when the normally open valve is powered or in action, the normally open valve is closed, at which time the liquid flow of the liquid inlet flow path 7 is reduced.

[0132] Similarly, when the pressure regulating valve assembly 70 comprises a normally closed valve and a pressure stabilizing valve 72, the normally closed valve is in a closed state under the natural condition that the normally closed valve is not powered or not in action, thereby reducing the liquid flow of the liquid inlet flow path 7; when the normally closed valve is powered or in action, the normally closed valve is opened, at which time the flow of the liquid inlet flow path 7 is increased.

[0133] Optionally, when the normally open valve or the normally closed valve is arranged in parallel with the pressure stabilizing valve 72, the liquid outlet flow of the liquid inlet flow path 7 is the liquid outlet flow of the pressure stabilizing valve 72 when the pressure stabilizing valve 72 is running and the normally open valve or the normally closed valve is closed; the liquid outlet flow of the liquid inlet flow path 7 is the liquid outlet flow of the normally open valve or the normally closed valve when the pressure stabilizing valve 72 is closed and the normally open valve or the normally closed valve is opened; the liquid outlet flow of the liquid inlet flow path 7 is the sum of the liquid outlet flow of the normally open valve or the normally closed valve and the liquid outlet flow of the pressure stabilizing valve 72 when the pressure stabilizing valve 72 is running and the normally open valve or the normally closed valve is opened, thereby realizing different outlet water flow regulation under different inlet liquid pressures.

[0134] Optionally, the normally open valve is closed or the normally closed valve is closed, while the pressure stabilizing valve 72 is opened, and the pump body 53 is operated, so that the air dissolving device 1 is in the air intake state. Thus, the purpose of quickly intaking air to the air dissolving device 1 is achieved, and the air dissolving device 1 is filled with the required gas; correspondingly, the normally open valve is opened or the normally closed valve is opened, and the pump body 53 is stopped, so that the gas in the mixing chamber 16 is dissolved in the liquid and forms the air dissolved liquid, so as to facilitate the subsequent generation of high-quality micro-nano bubble liquid.

[0135] Optionally, as shown in the first aspect example in the Figures 1-3 and the third aspect example in the Figures 6-8 , the liquid inlet flow path 7 includes a second liquid inlet flow path 76 and a first liquid inlet flow path 75 connected in series, the outlet end of the first liquid inlet flow path 75 is connected to the outlet end of the air inlet flow path 5 to form a merging flow path 8, and the first liquid inlet flow path 75 is provided with a flow regulating valve 78, a normally open valve or a normally closed valve.

[0136] The flow regulating valve 78, the normally open valve or the normally closed valve is used to regulate the water flow of the first liquid inlet flow path 75, so as to regulate the liquid flow of the liquid inlet flow path 7.

[0137] Optionally, the inlet end of the first liquid inlet flow path 75 is connected to a water source, and the inlet end of the first liquid inlet flow path 75 is used to transport the liquid in the water source to the merging flow path 8 and then to the mixing chamber 16 through the merging flow path 8.

[0138] Optionally, as shown in the first aspect example in the Figure 1 , Figure 2 , Figure 6 , Figure 7 , the second liquid inlet flow path 76 is provided with a pressure stabilizing valve 72, and the outlet end of the second liquid inlet flow path 76 is connected to the merging flow path 8. By providing the second liquid inlet flow path 76, when the first liquid inlet flow path 75 is provided with a normally open valve or a normally closed valve, and the normally open valve or the normally closed valve closes the first liquid inlet flow path 75, part of the liquid can flow into the water outlet through the second liquid inlet flow path 76, preventing water interruption.

[0139] Optionally, as shown in the first aspect example in the Figure 1 and the third aspect example in the Figure 4 , when the outlet end of the second liquid inlet flow path 76 is connected to the merging flow path 8, the outlet end is located on the front side of the pump body 53. At this time, the outlet end of the second liquid inlet flow path 76 and the outlet end of the first liquid inlet flow path 75 are connected to the merging flow path 8 after merging, so that the water pressure is regulated by the pressure stabilizing valve 72, and the pressure and the water flow of the liquid inlet connected to the air dissolving device 1 are regulated, ensuring that the air dissolving device 1 has a certain amount of liquid, and the water outlet is continuously supplied with water.

[0140] Optionally, as shown in the first aspect example in the Figure 2 and the third aspect example in the Figure 7As shown, when the liquid outlet side of the second liquid inlet flow path 76 is connected to the confluence flow path 8, the liquid outlet side is located at the rear side of the pump body 53. Here, the liquid outlet side located at the rear side of the pump body 53 can be understood as that the liquid outlet side is located downstream of the pump body 53, and the liquid in the second liquid inlet flow path 76 directly flows into the downstream of the pump body 53 in the flowing process, without flowing through the pump body 53. In this way, when the pump body 53 operates to pump the liquid in the liquid inlet flow path 7, only the liquid in the first liquid inlet flow path 75 needs to be pumped, without pumping the liquid in the second liquid inlet flow path 76, so as to reduce the liquid pumping pressure of the pump body 53 and prolong the service life of the pump body 53.

[0141] Optionally, as shown in Figure 3 and Figure 8 , the liquid outlet side of the second liquid inlet flow path 76 is connected to the liquid outlet flow path 6. After the pressure stabilizing valve 72 is opened, part of the liquid can also enter the liquid outlet flow path 6 through the second liquid inlet flow path 76. When the pressure stabilizing valve 72 adjusts the water pressure in the liquid inlet flow path 7, the gas-dissolved liquid in the mixing chamber 16 can also be mixed with the water in the second liquid inlet flow path 76, so as to flow together to the water use end, so as to stabilize the pressure of the entire micro-nano bubble liquid generating system 100, and the liquid outlet flow path 6 can maintain a certain amount of water outlet, preventing the system from being out of water.

[0142] Optionally, as shown in Figure 2 , Figure 3 , Figure 7 and Figure 8 , a liquid inlet one-way valve 761 can be further arranged on the second liquid inlet flow path 76, so that the liquid flows from the pressure stabilizing valve 72 to the liquid outlet end, without flowing in the opposite direction, so as to ensure the pressure stability of the system.

[0143] In some embodiments of the present application, as shown in the first aspect example in Figures 1-3 and the third aspect example in Figures 6-8 , the micro-nano bubble liquid generating system 100 further comprises a one-way valve 51 arranged on the gas inlet flow path 5, and the one-way valve 51 can make the gas flow from the gas inlet flow path 5 to the mixing chamber 16 in one direction. By arranging the one-way valve 51, the flow direction of the gas flow in the gas inlet flow path 5 can be effectively controlled, so that the gas flow can only flow in one direction to charge the mixing chamber 16, without the opposite process, so as to ensure that the pressure between the gas inlet flow path 5 and the gas-dissolved device 1 is controllable, preventing the gas-dissolved device 1 from being depressurized or even unable to intake gas.

[0144] Optionally, as shown in Figure 6 , Figure 7 and Figure 8As shown, the micro-nano bubble liquid generating system 100 further comprises an air charging pump 52 arranged on the air inlet channel 5, and the air charging pump 52 is configured to charge the mixing chamber 16. The air charging pump 52 is configured to pump air into the air dissolving device 1, and the air pressure pumped by the air charging pump 52 is greater than or equal to the pressure in the air dissolving device 1, so that the air charging pump 52 actively pumps air into the mixing chamber 16, realizes air inlet of the mixing chamber 16, and improves the air inlet efficiency of the mixing chamber 16.

[0145] Therefore, the air charging pump 52 and the pump body 53 are combined to control the flow of gas towards the mixing chamber 16, realize the air inlet of the mixing chamber 16, and further improve the air inlet efficiency of the mixing chamber 16.

[0146] In a specific example, the pressure in the first liquid inlet channel 75 or the pressure in the air inlet 11 can be reduced by pumping liquid by the pump body 53, and then the air charging pump 52 is actively operated to increase the pressure in the air inlet channel 5, so that the pressure difference between the air pumped by the air charging pump 52 and the pressure in the air dissolving device 1 is greater, so as to control the air inlet of the mixing chamber 16 faster and more easily realize the efficient air inlet of the mixing chamber 16.

[0147] Of course, in some other examples, the air charging pump 52 can not be arranged, and the pump body 53 can be used alone to realize the air inlet control and efficient air inlet of the mixing chamber 16, and when the air charging pump 52 is not arranged, the production cost of the micro-nano bubble liquid generating system 100 can be reduced and the control of the micro-nano bubble liquid generating system 100 is simple.

[0148] Optionally, the air pressure pumped by the air charging pump 52 is in the range of 0.1 MPa to 1.2 MPa; and / or, the water inlet pressure of the liquid inlet channel 7 is in the range of 0.01 MPa to 1.2 MPa. That is, the air pressure pumped by the air charging pump 52 can be in the range of 0.1 MPa to 1.2 MPa; the water inlet pressure of the liquid inlet channel 7 can be in the range of 0.01 MPa to 1.2 MPa; or the air pressure pumped by the air charging pump 52 can be in the range of 0.1 MPa to 1.2 MPa, and the water inlet pressure of the liquid inlet channel 7 can be in the range of 0.01 MPa to 1.2 MPa. In this way, the control logic of the controller 3 is simplified, and the production cost is reduced.

[0149] For example, the air pressure pumped by the air pump 52 can be: 0.1 MPa, 0.15 MPa, 0.2 MPa, 0.25 MPa, 0.3 MPa, 0.35 MPa, 0.4 MPa, 0.45 MPa, 0.5 MPa, 0.55 MPa, 0.6 MPa, 0.65 MPa, 0.7 MPa, 0.75 MPa, 0.8 MPa, 0.85 MPa, 0.9 MPa, 0.95 MPa, 1.0 MPa, 1.05 MPa, 1.1 MPa, 1.15 MPa, 1.2 MPa, and the like.

[0150] Then, correspondingly, the water inlet pressure of the liquid inlet flow path 7 can be: 0.01 MPa, 0.05 MPa, 0.1 MPa, 0.15 MPa, 0.2 MPa, 0.25 MPa, 0.3 MPa, 0.35 MPa, 0.4 MPa, 0.45 MPa, 0.5 MPa, 0.55 MPa, 0.6 MPa, 0.65 MPa, 0.7 MPa, 0.75 MPa, 0.8 MPa, 0.85 MPa, 0.9 MPa, 0.95 MPa, 1.0 MPa, 1.05 MPa, 1.1 MPa, 1.15 MPa, 1.2 MPa, and the like.

[0151] In some embodiments of the present application, as shown in the first aspect example in the Figures 1-3 and the third aspect example in the Figures 6-8 As shown in the first aspect example in the and the third aspect example in the, the micro-nano bubble liquid generating system 100 further comprises a water flow sensor 71 arranged on the liquid inlet flow path 7, and the water flow sensor 71 is used to detect the liquid flow of the liquid inlet flow path 7. Thus, it can be detected in real time whether liquid flows into the liquid inlet flow path 7, and the flow of the liquid flowing through is detected.

[0152] Optionally, the micro-nano bubble liquid generating system 100 further comprises a controller 3, and the controller 3 is in communication connection with the water flow sensor 71, the pressure regulating valve assembly 70, and the pump body 53 respectively. That is, the controller 3 can accurately control the water inlet amount and the water inlet pressure in the mixing chamber 16 or the micro-nano bubble generator 41 through the control of the water flow sensor 71, which saves resources and ensures that sufficient liquid enters the mixing chamber 16 for gas dissolution; the controller 3 can control the size of the liquid flow of the liquid inlet flow path 7 through the control of the pressure regulating valve assembly 70; and the controller 3 can control the start and stop of the pump body 53, so as to control the pumping of liquid and promote the gas inlet in the mixing chamber 16 when the pump body 53 is turned on, and the gas dissolution in the mixing chamber 16 when the pump body 53 is turned off. Through the action of the controller 3, the operation steps of the micro-nano bubble liquid generating system 100 can be simplified, the operation difficulty is reduced, and the use is convenient and the intelligent degree is high.

[0153] Optionally, the controller 3 is configured to control the pressure regulating valve assembly 70 to close or reduce the opening degree when the water flow sensor 71 accumulates water flow greater than the first preset flow L1 or the water flow sensor 71 accumulates usage time greater than the first preset time T4, and the controller 3 controls the pump body 53 to operate to supplement gas to the mixing chamber 16. Thus, the gas content in the gas dissolved liquid is increased.

[0154] It should be noted that when the water flow sensor 71 accumulates water flow greater than the first preset flow L1 or the water flow sensor 71 accumulates usage time greater than the first preset time T4, and the flow of the liquid inlet flow path 7 is large, it indicates that a large amount of liquid has been introduced into the mixing chamber 16. When the amount of liquid is too large and the amount of gas is small, the quality of the generated micro-nano bubble liquid will be reduced. Therefore, the application will control the pressure regulating valve assembly 70 to close or reduce the opening degree and control the pump body 53 to extract liquid to switch the gas dissolving device 1 to the liquid discharge and gas inlet state, and supplement gas to the mixing chamber 16 in time to increase the gas content in the gas dissolved liquid, thereby improving the quality of the micro-nano bubble liquid.

[0155] Optionally, as shown in Figure 6 , Figure 7 and Figure 8 , the micro-nano bubble liquid generating system 100 further comprises a liquid level sensor 161, and the controller 3 is in communication connection with the liquid level sensor 161. The controller 3 is configured to control the liquid level sensor 161.

[0156] The liquid level sensor 161 is configured to detect the liquid level height of the liquid in the mixing chamber 16, and the controller 3 receives the signal of the liquid level height. Thus, the liquid level in the mixing chamber 16 can be accurately determined, and the pressure in the mixing chamber 16 can be further determined according to the liquid level, which is beneficial to more accurate judgment and control of the liquid discharge and gas inlet, gas dissolving process in the mixing chamber 16, thereby further ensuring the quality of the gas dissolved liquid flowing out of the liquid outlet flow path 6, providing reliable guarantee for subsequent formation of micro-bubble water, and ensuring the gas density of the micro-bubble water.

[0157] Optionally, the liquid level sensor 161 can be a float, an infrared sensor, etc.

[0158] Optionally, the liquid level sensor 161 is arranged above the middle part of the mixing chamber 16, and the controller 3 is configured to control the gas dissolving device 1 to enter the gas inlet state when the liquid level height is higher than the first preset liquid level height threshold. That is, the liquid level sensor 161 can also be arranged at a position above the middle part of the mixing chamber 16. When the liquid level sensor 161 detects that the liquid level height is higher than the first preset liquid level height threshold, it indicates that there is part of the liquid in the mixing chamber 16. At this time, the gas dissolving device 1 is controlled to enter the gas inlet state, and the entry of the gas will cause part of the liquid in the mixing chamber 16 to be discharged to the liquid outlet flow path 6, so that the mixing chamber 16 is filled with the required gas again.

[0159] In a specific example, the liquid level sensor 161 is arranged above the middle of the mixing cavity 16, and when the liquid level height is higher than the upper limit of the first preset liquid level height threshold, the air dissolving device 1 is controlled to enter the air intake state; at this time, the entry of the gas will cause the liquid level height to decrease, and when the liquid level height is lower than the lower limit of the first preset liquid level height threshold, the air dissolving device 1 is controlled to enter the air dissolving state.

[0160] In another example, the liquid level sensor 161 is arranged at the lower part of the mixing cavity 16, and when the controller 3 receives the air intake signal, the controller 3 is configured to control the pressure regulating valve assembly 70 to reduce the flow or be closed and the pump body 53 to operate. At this time, the liquid flow of the liquid inlet flow path 7 is reduced, thereby reducing the amount of liquid transported by the liquid inlet flow path 7 into the mixing cavity 16, and the controller 3 further controls the pump body 53 to pump liquid, so that the gas pressure in the converging flow path 8 and the liquid inlet flow path 7 is lower than the gas pressure in the air intake gas path 5, thereby ensuring that the gas in the air intake gas path 5 can enter the inside of the mixing cavity 16 through the converging flow path 8, and the amount of gas in the mixing cavity 16 is replenished in time.

[0161] Optionally, when the liquid level sensor 161 is arranged at the lower part of the mixing cavity 16, the controller 3 is further configured to control the pump body 53 to stop operating and control the pressure regulating valve assembly 70 to increase the flow or be opened when the liquid level height is within the second preset liquid level height threshold, so as to enter the air dissolving state. Because the air dissolving liquid in the liquid outlet flow path 6 is continuously discharged outward, the liquid level in the mixing cavity 16 is continuously lowered, the space for accommodating the gas in the mixing cavity 16 is increased, the pressure in the mixing cavity 16 is lowered, and the gas in the air intake gas path 5 is continuously charged into the mixing cavity 16. By controlling the pump body 53 to stop operating, the amount of gas finally charged into the mixing cavity 16 can be controlled, and it is ensured that the gas charged into the mixing cavity 16 is sufficient, and the liquid level height is within the second preset liquid level height threshold, which indicates that there is still a certain amount of liquid in the mixing cavity 16, thereby effectively preventing the water supply from being interrupted.

[0162] Meanwhile, when the pump body 53 is controlled to stop operating and the pressure regulating valve assembly 70 is controlled to increase the flow or be opened, the air dissolving device 1 enters the air dissolving state. At this time, a large amount of liquid can be quickly flowed into the mixing cavity 16 through the liquid inlet flow path 7, so as to stably increase the pressure in the mixing cavity 16, and the gas charged into the air dissolving device 1 is quickly dissolved in the liquid to form the air dissolving liquid, thereby providing a reliable guarantee for the subsequent further generation of micro-nano bubble water.

[0163] The preset liquid level height in the present application can be flexibly set according to actual conditions.

[0164] Optionally, as Figures 1-3 the first aspect example and Figures 6-8As shown in the third aspect example in the first aspect, the micro-nano bubble liquid generating system 100 further comprises a water outlet switch 61, the water outlet switch 61 is arranged on the liquid outlet flow path 6, and the controller 3 is in communication connection with the water outlet switch 61. When the water outlet switch 61 is opened and the water flow sensor 71 detects water flow, the controller 3 controls the mixing cavity 16 to be in the air inlet state. That is, when the water outlet switch 61 is opened, it indicates that the water end connected with the liquid outlet flow path 6 needs to use water, so at this time, the liquid inlet flow path 7 will have liquid passing through, so that when the water flow sensor 71 detects liquid flow, the controller 3 can control the pump body 53 or the air pump 52 to act, and promote the air inlet flow path 5 to inlet air to the mixing cavity 16.

[0165] Optionally, when the water outlet switch 61 is closed for a time greater than the second preset time T5, and the water outlet switch 61 is opened again, the controller 3 controls the mixing cavity 16 to be in the air inlet state again.

[0166] That is, when the water flow sensor 71 does not detect water flow (no water flow signal) for a continuous time greater than T5, the controller 3 controls the mixing cavity 16 to be in the air inlet state again, so that a certain amount of dissolved air liquid is always kept in the mixing cavity 16.

[0167] Optionally, when the water outlet switch 61 is opened and then closed for the first time, the water flow sensor 71 accumulates water flow greater than the second preset flow, and the water outlet switch 61 is opened again. At this time, a large amount of liquid already exists in the mixing cavity 16, and therefore, the controller 3 controls the mixing cavity 16 to be in the air inlet state again, so as to supplement air in the mixing cavity 16.

[0168] In some embodiments of the present application, as shown in the first aspect example in the first aspect and the third aspect example in the third aspect, Figures 1-3 Figures 6-8 As shown in the third aspect example in the first aspect, the micro-nano bubble liquid generating system 100 further comprises a micro-nano bubble generator 41, which is connected with the liquid outlet flow path 6 of the air dissolving device 1, and is used to convert the dissolved air liquid into micro-nano bubble water.

[0169] Optionally, the micro-nano bubble generator 41 can comprise a micro-nano bubble generator with an axially through micro-nano bubble water micro-channel, the micro-nano bubble water micro-channel can have a Venturi tube structure, and the micro-nano bubble water micro-channel can be provided with one or more. The dissolved air liquid in the bubble water flow path is discharged through the micro-nano bubble water micro-channel, so that micro-nano bubble water with high micro-nano bubble density can be generated.

[0170] ​Optionally, the micro-nano bubble generator 41 is provided with a gap water flow channel. Since the micro-nano bubble generator 41 has a micro-nano bubble water micro-flow channel with small water flow hole size, when the water pressure is small, the water output is small, which is difficult to meet the normal water demand of the user. Therefore, in addition to the micro-nano bubble water micro-flow channel, the micro-nano bubble generator 41 can also be internally provided with a gap water flow channel. When the water pressure is small, the gap water flow channel can be turned on to increase the water output of the micro-nano bubble generator 41. When the water pressure is large, the gap water flow channel can be turned off to output micro-nano bubble water from the micro-nano bubble water micro-flow channel of the micro-nano bubble generator 41.

[0171] Optionally, the micro-nano bubble liquid generating system 100 further comprises a water outlet 4 connected to the end of the liquid outlet flow path 6 (i.e. the end of the liquid outlet flow path 6 away from the liquid outlet 13), and the micro-nano bubble generator 41 is arranged in the water outlet 4. This reduces the dissipation of micro-nano bubbles in the liquid outlet flow path 6, further improving the quality of the micro-nano bubble water. The water outlet 4 is directly exposed to the water end, which is convenient to install and maintain.

[0172] Optionally, the water outlet 4 is a shower head, such as a shower head on a kitchen sink, or a shower head for showering, or a shower head in a dishwasher, so that the micro-nano bubble water flowing out of the water outlet 4 can increase the cleaning effect and bactericidal effect of the water outlet. For example, it can achieve clean cleaning of vegetables, fruits and meat; it can also achieve clean cleaning of dishes.

[0173] Optionally, the water outlet 4 is a faucet, such as a faucet on a kitchen sink, or a faucet on a sink for daily use, so that the micro-nano bubble water flowing out of the water outlet 4 can also increase the degradation of pesticide residues on vegetables and kill bacteria and viruses.

[0174] In some embodiments of the present application, the micro-nano bubble liquid generating system 100 further comprises a power supply device 2 connected to the controller 3, so as to supply the required power to the controller 3 and enable the controller 3 to operate normally.

[0175] The water heater 1000 according to the embodiments of the present application will be described below with reference to the accompanying drawings. The water heater 1000 can be a gas water heater or an electric water heater, so as to greatly improve the dissolved air effect and water cleaning capacity of the water outlet of the water heater 1000.

[0176] The water heater 1000 according to the embodiments of the present application, as shown in Figure 18 and Figure 19 , comprises a heating device 400 and a micro-nano bubble liquid generating system 100.

[0177] Wherein, the micro-nano bubble liquid generating system 100 is the aforementioned micro-nano bubble liquid generating system 100, and the specific structure of the micro-nano bubble liquid generating system 100 is not described herein.

[0178] As shown in Figure 18 , the heating device 400 is arranged on the merging flow path 8 and located between the pump body 53 and the gas dissolving device 1, or, as shown in Figure 19 , the heating device 400 is arranged on the liquid outlet flow path 6. The gas dissolving liquid formed after passing through the micro-nano bubble liquid generating system 100 or the liquid led out by the liquid inlet flow path 7 is heated by the heating device 400, which prevents the high-temperature liquid from impacting the pump body 53, prolongs the service life of the pump body 53, facilitates the delivery of hot water to the water outlet end, and improves the user experience.

[0179] As can be seen from the above structure, the water heater 1000 of the embodiment of the present application can quickly form a gas dissolving liquid in the water heater 1000 by using the aforementioned micro-nano bubble liquid generating system 100, and deliver the gas dissolving liquid or the liquid led out by the liquid inlet flow path 7 to the heating device 400. The heating device 400 is used for heating the gas dissolving liquid or the liquid, and then the gas dissolving liquid with a certain temperature is delivered to the water use end of the water heater 1000, so that the user can use the water with the required properties in time. The internal pressure of the water heater 1000 is adjusted smoothly, the operation is stable, the user experience is good, and the product safety is high. The user can install the micro-nano bubble liquid generating system 100 at the required position according to the needs, improve the flexibility and convenience of product installation, and increase the practicability of the water heater 1000.

[0180] Optionally, as shown in Figure 18 , the heating device 400 is arranged on the merging flow path 8 and located between the pump body 53 and the gas dissolving device 1, so that the liquid led out by the pump body 53 is first heated by the heating device 400, and then the heated liquid is delivered to the mixing chamber 16 through the merging flow path 8, so that the gas dissolving liquid mixed in the mixing chamber 16 has a certain stability, and the user experience is improved.

[0181] It is worth noting that by arranging the heating device 400 between the pump body 53 and the gas dissolving device 1, the liquid will first pass through the pump body 53 and then flow into the heating device 400 for heating in the process of liquid flow, that is, when the liquid flows through the pump body 53, the liquid is formed as a normal-temperature liquid, which can effectively avoid the impact of high-temperature liquid on the pump body 53, and prolong the service life of the pump body 53.

[0182] It should be noted that, as shown in Figure 18 , the heating device 400 is arranged on the merging flow path 8 and located between the pump body 53 and the gas dissolving device 1, so that the liquid led out by the pump body 53 is first heated by the heating device 400, and then the heated liquid is delivered to the mixing chamber 16 through the merging flow path 8, so that the gas dissolving liquid mixed in the mixing chamber 16 has a certain stability, and the user experience is improved.As shown, when the heating device 400 is arranged between the pump body 53 and the dissolved air device 1, and the liquid outlet side of the second liquid inlet flow path 76 is connected to the rear side of the pump body 53, the liquid outlet side of the second liquid inlet flow path 76 can be connected between the pump body 53 and the heating device 400, so that when the liquid is transported to the dissolved air device 1 through the second liquid inlet flow path 76, the liquid transported by the second liquid inlet flow path 76 can first pass through the heating device 400 and then be transported into the dissolved air device 1.

[0183] Of course, in some other examples, the liquid outlet side of the second liquid inlet flow path 76 can also be connected between the heating device 400 and the dissolved air device 1, and the second liquid inlet flow path 76 is used to transport normal-temperature water to the dissolved air device 1.

[0184] In some other examples, as shown, the heating device 400 can also be arranged on the liquid outlet flow path 6. At this time, the dissolved air liquid in the dissolved air device 1 has a lower temperature, and the dissolved air liquid is then sent into the heating device 400 for heating to form a dissolved air liquid with a higher temperature, which is output to the water outlet element 4. Figure 19

[0185] Optionally, the heating device 400 can be a heating inner container provided with an electric heating pipe, which is mainly suitable for electric water heaters, and the electric heating pipe heats the water in the heating inner container.

[0186] Optionally, the heating device 400 can be a combination of a fin heat exchanger and a gas fire source, which is mainly suitable for gas water heaters, and the gas heats the fin heat exchanger, and the water flowing out of the fin heat exchanger is heated.

[0187] Optionally, the water heater 1000 comprises a cold water inlet flow path, a hot water outlet flow path, a heating device 400, and the aforementioned micro-nano bubble liquid generating system 100. The liquid outlet flow path 7 of the dissolved air device 1 is connected to the cold water inlet flow path and located at the water inlet end of the heating device 400. The water outlet end of the heating device 400 is connected to the hot water outlet flow path, and the other end of the hot water outlet flow path is connected to the dissolved air device 1 or the liquid outlet flow path 6, the liquid outlet flow path 6 is connected to the water outlet element 4, and the side of the liquid outlet flow path 6 close to the water outlet element 4 is provided with a water outlet switch 61. When the other end of the hot water outlet flow path is connected to the liquid outlet flow path 6, the dissolved air liquid in the dissolved air device 1 has a lower temperature, and the dissolved air liquid is then sent into the heating device 400 for heating to form a dissolved air liquid with a higher temperature, which is output to the water outlet element 4. Thus, the pump body 53 of the present application is not subjected to the impact of hot water, thereby prolonging the service life of the pump body 53.

[0188] It should be noted that the micro-nano bubble liquid generating system 100 of the present application can not only be used in the aforementioned water heater 1000, but also can be used in other household appliances, such as beauty instruments or dishwashers, so that the application range of the micro-nano bubble liquid generating system 100 of the present application is wider.​

[0189] The specific structure of the micro-nano bubble liquid generating system 100 and its control mode in the specific embodiments of the present application will be described below in conjunction with the accompanying drawings of the specification. The embodiments of the present application can be combined with all the embodiments after the combination of the foregoing technical solutions, and are not limited to the specific embodiments described below, which all fall within the protection scope of the present application.

[0190] Embodiment 1

[0191] A micro-nano bubble liquid generating system 100, as shown in Figure 1 and Figure 6 , comprises a gas dissolving device 1, a water flow sensor 71, a pressure regulating valve assembly 70, a power supply device 2, a controller 3, a pump body 53, a water outlet switch 61, a water outlet 4, and a micro-nano bubble generator 41.

[0192] As shown in Figure 1 and Figure 6 , the gas dissolving device 1 has a mixing chamber 16, and the gas dissolving device 1 is formed with an air inlet gas path 5, a liquid inlet path 7, a merging path 8, and a liquid outlet path 6, which are in communication with the mixing chamber 16.

[0193] One end of the merging path 8 is in communication with the liquid inlet path 7 and the air inlet gas path 5, and the other end of the merging path 8 is in communication with the mixing chamber 16. The water flow sensor 71 is arranged on the liquid inlet path 7, and the water flow sensor 71 is arranged on the water inlet side of the pressure regulating valve assembly 70. The pressure regulating valve assembly 70 is arranged on the liquid inlet path 7, and is used to adjust the liquid flow size of the liquid inlet path 7. The power supply device 2 supplies power to the controller 3. The water outlet switch 61 is arranged on the liquid outlet path 6 close to the water outlet 4, and the micro-nano bubble generator 41 is arranged in the water outlet 4.

[0194] As shown in Figure 1 and Figure 6 , the pump body 53 is arranged on the merging path 8. The liquid inlet path 7 includes a first liquid inlet path 75 and a second liquid inlet path 76 connected on the liquid inlet side. The liquid outlet end of the first liquid inlet path 75 is in communication with the air outlet end of the air inlet gas path 5 through the merging path 8. The liquid outlet end of the second liquid inlet path 76 is connected to the merging path 8 and located on the front side of the pump body 53. A one-way valve 51 is arranged on the air inlet gas path 5.

[0195] As shown in Figure 1 and Figure 6 , the pressure regulating valve assembly 70 includes a pressure stabilizing valve 72 and a flow regulating valve 78 arranged in parallel. The pressure stabilizing valve 72 is arranged on the second liquid inlet path 76, and the flow regulating valve 78 is arranged on the first liquid inlet path 75. The flow regulating valve 78 is used to adjust the liquid flow size of the liquid inlet path 7. The controller 3 is communicatively connected with the water flow sensor 71, the air pump 52, the pressure stabilizing valve 72, and the flow regulating valve 78, respectively.

[0196] like Figure 4 As shown, when using the micro / nano bubble liquid generation system 100, after the user turns on the water outlet switch 61, the water flows through the water flow sensor 71, which sends a water flow signal to the controller 3. The controller 3 supplies power or signals to the flow regulating valve 78 and the pressure regulating valve 72, causing the flow regulating valve 78 to output a small flow rate, and the pressure regulating valve 72 to open and close according to the actual system pressure. The controller 3 controls the pump body 53 to operate, and the pump body 53 pumps the liquid in the liquid inlet flow path 7 to the dissolved air device 1. The air pressure in the merging flow path 8 and the liquid inlet flow path 7 is lower than the air pressure in the air inlet flow path 5, causing the gas in the air inlet flow path 5 to enter the mixing chamber 16 through the merging flow path 8, thus completing the air intake of the mixing chamber 16. Once there is sufficient gas in the mixing chamber 16, the flow regulating valve 78 is controlled to output a large flow rate, and the pressure regulating valve 72 is controlled to open and close according to the actual system pressure, causing the pressure in the mixing chamber 16 to increase, thereby dissolving air in the liquid to produce dissolved air liquid. When the dissolved air liquid flows out of the water outlet 4, it passes through the micro-nano bubble generator 41 inside the water outlet 4, thereby generating micro-nano bubble water for the user. When the conditions for reuse of the micro-nano bubble liquid generation system 100 are met, the process described above can be repeated for another cycle.

[0197] When the water flow sensor 71 detects a cumulative water flow rate greater than the first preset flow rate L1, or when the cumulative usage time of the water flow sensor 71 is greater than the first preset time T4, the flow regulating valve 78 and the pump body 53 are reactivated, thereby enabling the mixing chamber 16 to discharge liquid and introduce gas during operation, replenishing the gas in the mixing chamber 16.

[0198] When the controller 3 does not detect a water flow rate greater than T5 for a continuous period of time when the water flow sensor 71 does not detect a water flow rate greater than the second preset flow rate L2 during the last operation, the controller 3 will reopen the water outlet switch 61 and re-control the mixing chamber 16 to be in the air intake state, so that a certain amount of dissolved air liquid is always maintained in the mixing chamber 16.

[0199] Example 2

[0200] A micro / nano bubble liquid generation system 100 has a structure largely the same as that of Example 1, wherein the same components are referred to by the same reference numerals, and the only difference is: Figure 2 and Figure 7 As shown, the outlet end of the second inlet flow path 76 is connected to the confluence flow path 8 and is located on the rear side of the pump body 53. The usage of the micro / nano bubble liquid generation system 100 can be found in Example 1.

[0201] Example 3

[0202] A micro-nano bubble liquid generating system 100 is substantially the same as the structure of the embodiment 1, wherein the same components adopt the same reference numerals, and the only difference is that, as shown in Figure 3 and Figure 8 the liquid outlet end of the second liquid inlet flow path 76 is connected to the liquid outlet flow path 6. The usage mode of the micro-nano bubble liquid generating system 100 can refer to the embodiment 1.

[0203] Embodiment 4

[0204] A micro-nano bubble liquid generating system 100 is substantially the same as the structure of the embodiment 1, wherein the same components adopt the same reference numerals, and the only difference is that the pressure regulating valve assembly 70 comprises a normally open valve and a pressure stabilizing valve 72 arranged in parallel.

[0205] As shown in Figure 5 when the micro-nano bubble liquid generating system 100 is used, the user opens the water outlet switch 61, and the water flow passes through the water flow sensor 71 to send a water flow signal to the controller 3, and the controller 3 supplies power or signals to the normally open valve and the pressure stabilizing valve 72, so that the normally open valve outputs are closed, and the pressure stabilizing valve 72 is controlled to open and close according to the actual system pressure. The controller 3 controls the pump body 53 to operate, and the pump body 53 pumps the liquid in the liquid inlet flow path 7 into the gas dissolving device 1, and the gas pressure in the liquid inlet flow path 7 and the converging flow path 8 is lower than that in the gas inlet flow path 5, so that the gas in the gas inlet flow path 5 enters the mixing chamber 16 through the converging flow path 8, and the mixing chamber 16 completes the gas inlet.

[0206] When the mixing chamber 16 is filled with sufficient gas, the pump body 53 is stopped, the normally open valve is opened, and the pressure stabilizing valve 72 is controlled to open and close according to the actual system pressure, so that the pressure in the mixing chamber 16 is increased, and the air is dissolved in the liquid to generate a gas dissolved liquid. When the gas dissolved liquid flows out of the water outlet 4, it passes through the micro-nano bubble generator 41 in the water outlet 4, thereby generating micro-nano bubble water for the user to use. When the use conditions of the micro-nano bubble liquid generating system 100 are met again, the above process can be controlled again.

[0207] When the water flow sensor 71 accumulatively detects that the water flow is greater than the first preset flow L1, or the cumulative use time of the water flow sensor 71 is greater than the first preset time T4, the normally open valve and the pump body 53 are controlled again, so that the mixing chamber 16 realizes liquid discharge and gas inlet in the middle of operation, and the gas in the mixing chamber 16 is supplemented.

[0208] When the controller 3 does not detect water flow for a continuous time greater than T5, or the controller 3 judges that the cumulative water flow of the water flow sensor 71 is greater than the second preset flow L2 in the last operation process, the controller 3 reopens the water outlet switch 61 and controls the mixing chamber 16 to be in the gas inlet state again, so that a certain amount of gas dissolved liquid is always kept in the mixing chamber 16.

[0209] Embodiment 5

[0210] A micro-nano bubble liquid generating system 100 is substantially the same as the structure of Embodiment 1, wherein the same components are denoted by the same reference numerals, and the difference is only that, as shown in Figure 6 The micro-nano bubble liquid generating system 100 further comprises a liquid level sensor 161, which is in communication connection with the controller 3, and is used to detect the liquid level height of the liquid in the mixing cavity 16, and is arranged at a position below the mixing cavity 16.

[0211] As shown in Figure 9 When the micro-nano bubble liquid generating system 100 is used, after the user turns on the water outlet switch 61, the water flow passes through the water flow sensor 71 to send a water flow signal to the controller 3, and the controller 3 supplies power or signals to the flow regulating valve 78 and the pressure stabilizing valve 72, so that the flow regulating valve 78 outputs a small flow, and the pressure stabilizing valve 72 is controlled to open and close according to the actual system pressure. The controller 3 controls the pump body 53 to run, and the pump body 53 pumps the liquid in the liquid inlet flow path 7 into the gas dissolving device 1, and the gas pressure in the converging flow path 8 and the liquid inlet flow path 7 is lower than that in the gas inlet flow path 5, so that the gas in the gas inlet flow path 5 enters the inside of the mixing cavity 16 through the converging flow path 8, and the mixing cavity 16 completes the gas inlet.

[0212] When the liquid level sensor 161 detects that the liquid level height in the mixing cavity 16 is within the second preset liquid level height threshold, the mixing cavity 16 is filled with sufficient gas, the pump body 53 is controlled to stop running, the flow regulating valve 78 is controlled to output a large flow, and the pressure stabilizing valve 72 is controlled to open and close according to the actual system pressure, so that the pressure in the mixing cavity 16 is increased, so that air is dissolved in the liquid to generate a gas-dissolved liquid. When the gas-dissolved liquid flows out of the water outlet 4, it passes through the micro-nano bubble generator 41 in the water outlet 4, thereby generating micro-nano bubble water for the user to use. When the use conditions for using the micro-nano bubble liquid generating system 100 again are met, the above-mentioned flow control can be recycled again.

[0213] When the water flow sensor 71 accumulatively detects that the water flow is greater than the first preset flow L1, or the cumulative use time of the water flow sensor 71 is greater than the first preset time T4, the flow regulating valve 78 and the pump body 53 are controlled to act again, so that the mixing cavity 16 realizes liquid discharge and gas inlet in the middle of the operation, and the gas in the mixing cavity 16 is supplemented.

[0214] When the controller 3 detects that the water flow sensor 71 does not detect water flow for a continuous time greater than T5, or the controller 3 determines that the water flow sensor 71 accumulates water flow greater than the second preset flow L2 during the last operation, the controller 3 reopens the water outlet switch 61 and controls the mixing chamber 16 to be in the air intake state, so that a certain amount of dissolved air liquid is always kept in the mixing chamber 16.

[0215] Embodiment 6

[0216] A micro-nano bubble liquid generating system 100 is substantially the same as the structure of embodiment 5, wherein the same parts use the same reference numerals, and the difference is only that the liquid level sensor 161 is arranged at the upper part of the mixing chamber 16.

[0217] As shown in Figure 9 When the micro-nano bubble liquid generating system 100 is used, after the user opens the water outlet switch 61, the water flow passes through the water flow sensor 71 to send a water flow signal to the controller 3, and when the liquid level height is higher than the upper limit value of the first preset liquid level height threshold, the controller 3 controls the flow regulating valve 78 to output a small flow, and the pressure stabilizing valve 72 is controlled to open and close according to the actual system pressure. The controller 3 controls the pump body 53 to operate, and the pump body 53 pumps the liquid in the liquid inlet flow path 7 into the gas dissolving device 1, and the gas pressure in the converging flow path 8 and the liquid inlet flow path 7 is lower than the gas pressure in the air inlet flow path 5, so that the gas in the air inlet flow path 5 enters the mixing chamber 16 through the converging flow path 8, and the mixing chamber 16 completes air intake.

[0218] When the liquid level sensor 161 detects that the liquid level height in the mixing chamber 16 is located at the lower limit value of the first preset liquid level height threshold, the mixing chamber 16 is filled with sufficient gas, the pump body 53 is controlled to stop operating, the flow regulating valve 78 is controlled to output a large flow, and the pressure stabilizing valve 72 is controlled to open and close according to the actual system pressure, so that the pressure in the mixing chamber 16 is increased, so that air is dissolved in the liquid to generate dissolved air liquid. When the dissolved air liquid flows out of the water outlet 4, it passes through the micro-nano bubble generator 41 in the water outlet 4, thereby generating micro-nano bubble water for the user to use. When the use condition for using the micro-nano bubble liquid generating system 100 again is met, the above-mentioned flow control can be recycled again.

[0219] When the water flow sensor 71 accumulatively detects water flow greater than the first preset flow L1, or the cumulative use time of the water flow sensor 71 is greater than the first preset time T4, the flow regulating valve 78 and the pump body 53 are controlled to act again, so that the mixing chamber 16 realizes liquid discharge and air intake in the middle of operation, and the gas in the mixing chamber 16 is supplemented.

[0220] When the controller 3 detects that the water flow sensor 71 does not detect water flow for a continuous time greater than T5, or the controller 3 determines that the water flow sensor 71 accumulates water flow greater than the second preset flow L2 during the last operation, the controller 3 reopens the water outlet switch 61 and controls the mixing chamber 16 to be in the air intake state, so that a certain amount of gas- dissolved liquid is always kept in the mixing chamber 16.

[0221] Embodiment 7

[0222] A micro-nano bubble liquid generating system 100, which is substantially the same as the structure of embodiment 5, wherein the same parts use the same reference numerals, and the difference is only that the pressure regulating valve assembly 70 includes a normally open valve and a pressure stabilizing valve 72 arranged in parallel.

[0223] As shown in Figure 10 When using the micro-nano bubble liquid generating system 100, the user opens the water outlet switch 61, and the water flow passes through the water flow sensor 71 to send a water flow signal to the controller 3, and the controller 3 supplies power or signals to the normally open valve and the pressure stabilizing valve 72, so that the normally open valve outputs are closed, and the pressure stabilizing valve 72 is controlled to open and close according to the actual system pressure. The controller 3 controls the pump body 53 to operate, and the pump body 53 pumps the liquid in the liquid inlet flow path 7 into the gas dissolving device 1, and the gas pressure in the converging flow path 8 and the liquid inlet flow path 7 is lower than the gas pressure in the air inlet flow path 5, so that the gas in the air inlet flow path 5 enters the mixing chamber 16 through the converging flow path 8, and the mixing chamber 16 completes the air intake.

[0224] When the liquid level sensor 161 detects that the liquid level in the mixing chamber 16 is located at the lower limit of the first preset liquid level threshold, the mixing chamber 16 is filled with sufficient gas, the pump body 53 is stopped, the normally open valve is opened, and the pressure stabilizing valve 72 is controlled to open and close according to the actual system pressure, so that the pressure in the mixing chamber 16 is increased, so that air is dissolved in the liquid to produce gas-dissolved liquid. When the gas-dissolved liquid flows out of the water outlet 4, it passes through the micro-nano bubble generator 41 in the water outlet 4, thereby producing micro-nano bubble water for the user to use. When the use conditions for using the micro-nano bubble liquid generating system 100 again are met, the above-mentioned flow control can be repeated again.

[0225] When the water flow sensor 71 accumulates water flow greater than the first preset flow L1, or the accumulated use time of the water flow sensor 71 is greater than the first preset time T4, the normally open valve and the pump body 53 are controlled to act again, so that the mixing chamber 16 realizes liquid discharge and air intake in the middle of the operation, and the gas in the mixing chamber 16 is supplemented.

[0226] When the controller 3 detects that the water flow sensor 71 does not detect water flow for a continuous time greater than T5, or the controller 3 determines that the water flow sensor 71 accumulates water flow greater than the second preset flow L2 during the last operation, the controller 3 reopens the water outlet switch 61 and controls the mixing chamber 16 to be in the air intake state, so that the mixing chamber 16 always has a certain amount of dissolved air liquid.

[0227] The principle of generating micro-nano bubbles in the micro-nano bubble liquid generating system 100 and the water heater 1000 according to the embodiments of the present application, and the communication mode between the controller 3 and the water flow sensor 71 and the pump body 53 are known to those skilled in the art, and will not be described in detail here.

[0228] In the description of the present specification, the description referring to the terms "embodiment", "example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0229] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A micro-nano bubble liquid generating system, characterized by, The application relates to a dissolved air device. The dissolved air device comprises a mixing cavity, an air inlet channel, a liquid inlet channel, a merging channel and a liquid outlet channel, one end of the air inlet channel is connected with an air source, one end of the liquid inlet channel is connected with a water source, the other ends of the air inlet channel and the liquid inlet channel are communicated with the merging channel, and the other end of the merging channel is communicated with the mixing cavity. A pressure regulating valve assembly is arranged on the liquid inlet channel, and is used for regulating the liquid flow of the liquid inlet channel. The dissolved air device has an air inlet state and a dissolved air state, in the air inlet state, the pressure regulating valve assembly reduces the liquid flow of the liquid inlet channel, and the pump body operates to draw liquid from the liquid inlet channel to make the air inlet channel inlet air to the mixing cavity. In the dissolved air state, the pressure regulating valve assembly increases the liquid flow of the liquid inlet channel, the pump body stops operating, and the gas in the mixing cavity is dissolved in the liquid to form dissolved air liquid.

2. The micro-nano bubble liquid generating system according to claim 1, wherein, The pressure regulating valve assembly comprises a flow regulating valve and a pressure stabilizing valve arranged in parallel, the flow regulating valve is used for regulating the liquid flow of the liquid inlet channel, the flow regulating valve reduces the liquid flow of the liquid inlet channel, and the pump body operates to make the dissolved air device in the air inlet state.

3. The micro-nano bubble liquid generating system according to claim 1, wherein The pressure regulating valve assembly comprises a normally open valve or a normally closed valve and a pressure stabilizing valve, the normally open valve or the normally closed valve is used for regulating the liquid on-off, and the pressure stabilizing valve is arranged in parallel with the normally open valve or the normally closed valve. The normally open valve is closed or the normally closed valve is closed, and the pressure stabilizing valve is opened at the same time, and the pump body operates to make the dissolved air device in the air inlet state.

4. The micro-nano bubble liquid generation system according to claim 2 or 3, characterized by, The liquid inlet channel comprises a first liquid inlet channel and a second liquid inlet channel connected on the liquid inlet side, the liquid outlet end of the first liquid inlet channel is communicated with the air outlet end of the air inlet channel and the merging channel, the flow regulating valve, the normally open valve or the normally closed valve is arranged on the first liquid inlet channel, and the pressure stabilizing valve is arranged on the second liquid inlet channel. The liquid outlet side of the second liquid inlet channel is connected with the merging channel or the liquid outlet channel.

5. The micro-nano bubble liquid generating system according to claim 4, wherein When the liquid outlet side of the second liquid inlet channel is connected with the merging channel, the liquid outlet side is located on the front side or the rear side of the pump body.

6. The micro-nano bubble liquid generation system of claim 1, wherein, A one-way valve is arranged on the air inlet channel to make the gas flow from the air inlet channel to the mixing cavity in one direction.

7. The micro-nano bubble liquid generation system according to claim 6, wherein An air pump is arranged on the air inlet channel to charge the mixing cavity with air.

8. The micro-nano bubble liquid generation system of claim 1, wherein, A water flow sensor is arranged on the liquid inlet channel to detect the liquid flow of the liquid inlet channel.

9. The micro-nano bubble liquid generation system according to claim 8, wherein, A controller is respectively connected with the water flow sensor, the pressure regulating valve assembly and the pump body, the controller is used for controlling the pressure regulating valve assembly to be closed or to reduce the opening degree when the cumulative water flow of the water flow sensor is greater than a first preset flow or the cumulative use time of the water flow sensor is greater than a first preset time, and the controller controls the pump body to operate to supplement the mixing cavity with air.

10. The micro-nano bubble liquid generation system according to claim 9, wherein, The liquid level sensor is in communication with the controller and is configured to detect a liquid level of the liquid in the mixing chamber.

11. The micro-nano bubble liquid generation system according to claim 10, wherein, The liquid level sensor is arranged at a lower portion of the mixing chamber, and the controller is configured to control the pressure regulating valve assembly to reduce the flow rate or to be closed and the pump body to be operated when the air intake signal is received by the controller.

12. The micro-nano bubble liquid generation system according to claim 11, wherein, The liquid level sensor is arranged above a middle portion of the mixing chamber, and the controller is configured to control the air dissolving device to enter an air intake state when the liquid level is higher than a first preset liquid level threshold.

13. The micro-nano bubble liquid generation system according to claim 9, wherein, The liquid level sensor is arranged at a lower portion of the mixing chamber, and the controller is configured to control the pump body to stop operating and control the pressure regulating valve assembly to increase the flow rate or to be opened to enter an air dissolving state when the liquid level is within a second preset liquid level threshold.

14. The micro-nano bubble liquid generation system according to claim 13, wherein, The water outlet switch is arranged on the liquid outlet flow path and is in communication with the controller, and the controller is configured to control the mixing chamber to be in an air intake state when the water outlet switch is opened and the water flow sensor detects water flow.

15. The micro-nano bubble liquid generation system according to claim 14, wherein, The controller is configured to control the mixing chamber to be in an air intake state again when the water outlet switch is opened again after being closed for a time period longer than a second preset time.

16. The micro-nano bubble liquid generation system of claim 1, wherein, The controller is configured to control the mixing chamber to be in an air intake state again when the water outlet switch is opened again after being closed for a time period longer than a second preset time.

17. The micro-nano bubble liquid generation system of claim 16, wherein, The micro-nano bubble generator is connected to the liquid outlet flow path of the air dissolving device.

18. A water heater, characterized by The water outlet member is connected to an end of the liquid outlet flow path, and the micro-nano bubble generator is arranged in the water outlet member. The micro-nano bubble liquid generating system according to any one of claims 1-17; The heating device is arranged on the converging flow path between the pump body and the air dissolving device, or the heating device is arranged on the liquid outlet flow path.

Images