Microbubble generating device and water heater

Abstract

The utility model provides a microbubble generating device and a water heater, and belongs to the technical field of hot water equipment. The microbubble generating device comprises a dissolved air tank, an inflating device, a first one-way valve and a liquid level detection switch, and the dissolved air tank is provided with a water inlet connector and a water outlet connector; the air charging device is connected with the dissolved air tank, and an air outlet of the air charging device is communicated with the dissolved air tank; the first one-way valve is arranged in an air outlet of the air charging device, and the first one-way valve is configured to allow the air charging device to charge air into the dissolved air tank; the liquid level detection switch is arranged in the dissolved air tank, and the liquid level detection switch is configured to start the air charging device when the liquid level detection switch generates a high liquid level electric signal and close the air charging device when the liquid level detection switch generates a low liquid level electric signal.

Description

Technical Field

[0001] The utility model relates to the technical field of hot water equipment, in particular to a micro-bubble generating device and a water heater. Background Art

[0002] Nano-microbubble water has antibacterial and deep-cleansing properties, producing no harmful substances, and has become a new trend in the water heating equipment industry. Currently, some gas-fired microbubble water heaters incorporate an air dissolving tank within the water system. After activating the microbubble function and turning on the hot water tap, a solenoid valve disconnects the air dissolving tank from the tap water inlet pipe. The tank is then inflated using an air pump or a water pump. Once inflated, the solenoid valve is opened to restore tap water flow, and the system is turned on to heat the water.

[0003] Because the existing micro-bubble gas water heater first uses a solenoid valve to cut off the dissolved gas tank and the water inlet pipe after turning on the hot water tap, users have to wait for hot water for a long time, up to more than 30 seconds. Utility Model Content

[0004] The purpose of the utility model is to provide a micro-bubble generating device, which can reduce the time a user has to wait for hot water.

[0005] In order to achieve the purpose of this utility model, this utility model adopts the following technical solutions:

[0006] According to one aspect of the present invention, a microbubble generating device is provided, comprising an air dissolving tank, an inflation device, a first one-way valve and a liquid level detection switch, wherein the air dissolving tank is provided with a water inlet interface and a water outlet interface; the inflation device is connected to the air dissolving tank, and the air outlet of the inflation device is connected to the air dissolving tank; the first one-way valve is arranged in the air outlet of the inflation device, and the first one-way valve is configured to allow the inflation device to inflate air into the air dissolving tank; the liquid level detection switch is arranged in the air dissolving tank, and the liquid level detection switch is configured to turn on the inflation device when the liquid level detection switch generates a high liquid level electrical signal, and to turn off the inflation device when the liquid level detection switch generates a low liquid level electrical signal.

[0007] According to one embodiment of the present invention, a guide plate is further included. The guide plate is arranged in the air dissolving tank corresponding to the water inlet interface and forms a flow-equalizing cavity together with the air dissolving tank. The guide plate is provided with a plurality of water holes for breaking up the water flow.

[0008] According to one embodiment of the present invention, the guide plate is bowl-shaped.

[0009] According to one embodiment of the present utility model, the inflation device includes a shell having an air inlet and an air outlet, a pump air assembly and a driving device installed in the shell, the first one-way valve is located on the air outlet of the shell, the shell is detachably connected to the air dissolving tank, the driving device is detachably connected to the shell, and the driving device drives the pump air assembly to inhale air through the air inlet and exhaust air through the first one-way valve.

[0010] According to one embodiment of the present utility model, the shell has a first guide cavity and a second guide cavity connected to the first one-way valve, the first guide cavity is located between the first one-way valve and the second guide cavity, the shell has at least one first air inlet hole located at the second guide cavity, the air pump assembly includes a piston, a guide tube and a second one-way valve, the center of the piston is provided with a first through hole, one end of the guide tube is fixedly connected to the center of one side of the piston, and the cavity of the guide tube is connected to the first through hole, and the side wall of the guide tube is provided with at least one second air inlet hole, the piston is axially movable and sealedly installed in the first guide cavity, the guide tube is axially movable installed in the second guide cavity, and when the air pump assembly is in the suction position, the second air inlet hole is connected to the first air inlet hole, the second one-way valve is installed in the first through hole, the second one-way valve is configured to allow gas to flow from the guide tube into the first guide cavity, and when the air pump assembly is in the compression position, the piston presses the gas in the first guide cavity into the dissolved air tank through the first one-way valve.

[0011] According to one embodiment of the present invention, the housing includes a detachably connected cylinder and a mounting seat, the first guide cavity is located in the cylinder, the second guide cavity is located in the mounting seat, and the first one-way valve is mounted on the cylinder.

[0012] According to one embodiment of the present utility model, the gas dissolving tank is provided with a mounting interface, the cylinder sealing sleeve is arranged in the first mounting interface, a first flange is provided at one end of the cylinder, and a second flange is provided at the mounting seat. The second flange, the first flange and the first mounting interface are detachable and sealed.

[0013] According to one embodiment of the present invention, the driving device is a reduction motor, the rotating shaft of the reduction motor has an external thread, the inner wall of the guide tube has an internal thread, the rotating shaft of the reduction motor is located in the cavity of the guide tube and the external thread is engaged with the internal thread, and the reduction motor drives the guide tube to move axially between the suction position and the compression position by forward or reverse rotation.

[0014] According to one embodiment of the present invention, a water outlet joint is further included, one end of the water outlet joint is installed in the water outlet interface, and one end of the liquid level detection switch is installed on the water outlet joint.

[0015] The utility model also discloses a water heater, comprising a water heater body and the above-mentioned micro-bubble generating device, the water inlet interface is connected to the water outlet pipe of the water heater body, the water outlet interface is used to connect to the terminal water pipe, the inflation device and the liquid level detection switch are both electrically connected to the controller of the water heater body.

[0016] An embodiment of the present invention has the following advantages or beneficial effects:

[0017] The utility model provides a micro-bubble generating device, which comprises an air dissolving tank, an air charging device, a first one-way valve and a liquid level detection switch. The air dissolving tank is provided with a water inlet interface for communicating with a hot water outlet pipe of a water heater and a water outlet interface for communicating with a terminal water pipe; the air charging device is connected to the air dissolving tank, and the air outlet of the air dissolving tank is communicated with the air dissolving tank; the first one-way valve is arranged in the air outlet of the air charging device, and the first one-way valve is configured to allow the air dissolving tank to inflate air; the liquid level detection switch is arranged in the air dissolving tank, and the liquid level detection switch is arranged in the air dissolving tank. The switch is configured to turn on the inflation device when the liquid level detection switch generates a high liquid level electrical signal, and to turn off the inflation device when the liquid level detection switch generates a low liquid level electrical signal, and there is no water valve between the hot water outlet pipe and the water inlet interface. Therefore, a micro-bubble generating device of the utility model realizes that when the water heater is turned on, the hot water outlet pipe continuously and uninterruptedly injects hot water into the dissolved air tank. When the inflation device replenishes the air pressure in the dissolved air tank, there is no need to block the hot water outlet pipe and the dissolved air tank, thereby reducing the waiting time for hot water and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other features and advantages of the present invention will become more apparent by describing in detail example embodiments thereof with reference to the accompanying drawings.

[0019] Figure 1 is a perspective view of a microbubble generating device according to an exemplary embodiment.

[0020] Figure 2 FIG. 1 is an exploded view of a microbubble generating device according to an exemplary embodiment.

[0021] Figure 3 is a cross-sectional view of a microbubble generating device according to an exemplary embodiment.

[0022] Figure 4 is an exploded view of an inflator according to an exemplary embodiment.

[0023] Figure 5 FIG2 is a schematic diagram showing a state in which the liquid level in the dissolved air tank is at a low level according to an exemplary embodiment.

[0024] Figure 6 FIG. 1 is a schematic diagram showing a state in which the liquid level in the dissolved air tank is at a high level according to an exemplary embodiment.

[0025] Figure 7 FIG. 1 is a schematic diagram showing a state in which the liquid level in the dissolved air tank is moderate according to an exemplary embodiment.

[0026] Figure 8 FIG. 1 is a control logic diagram of a microbubble function of a gas water heater according to an exemplary embodiment.

[0027] The description of the accompanying drawings is as follows:

[0028] 1. Dissolved air tank; 11. Water inlet interface; 12. Water outlet interface; 13. Installation interface;

[0029] 2. Inflating device; 21. Housing; 211. Cylinder; 2111. First guide cavity; 212. Mounting seat; 2121. Second guide cavity; 2122. First air inlet; 22. Pump assembly; 221. Piston; 2211. First through hole; 222. Guide tube; 2221. Second air inlet; 223. Second one-way valve; 2231. Second pressure plate; 23. Driving device; 231. Rotating shaft;

[0030] 3. First one-way valve; 31. Sealing ring; 32. First pressure plate; 33. Screw; 34. Filter;

[0031] 4. Liquid level detection switch; 41. Sliding rod; 411. First partition; 412. Second partition; 413. Thread; 414. Fixing nut; 42. Magnetic float;

[0032] 5. Guide plate; 51. Flow-distributing cavity; 52. Water hole;

[0033] 6. Water outlet joint; 61. Clamp;

[0034] 7. Controller;

[0035] 8. Function selection module;

[0036] 9. Water flow sensor. DETAILED DESCRIPTION

[0037] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0038] The terms "a", "an", "the", and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0039] like Figure 1-7 As shown, a micro-bubble generating device according to an embodiment of the present invention includes an air dissolving tank 1 , an air charging device 2 , a first one-way valve 3 and a liquid level detection switch 4 .

[0040] The air dissolving tank 1 is provided with a water inlet interface 11 and a water outlet interface 12 , and the water inlet interface 11 is used to communicate with the water outlet pipe of the water heater.

[0041] More preferably, the dissolved air tank 1 is made of high-strength corrosion-resistant material, and its volume is preferably above 0.5L.

[0042] The inflation device 2 is connected to the air dissolving tank 1 , and the air outlet of the inflation device 2 is communicated with the air dissolving tank 1 so as to inflate the air into the air dissolving tank 1 .

[0043] The first one-way valve 3 is provided in the air outlet of the inflatable device 2 . The first one-way valve 3 is configured to allow the inflatable device 2 to inflate air into the air dissolving tank 1 and prevent water in the air dissolving tank 1 from entering the inflatable device 2 .

[0044] The liquid level detection switch 4 is provided in the air dissolving tank 1. When the liquid level detection switch 4 detects that the liquid level in the air dissolving tank 1 is at a high level, it indicates that the air pressure in the air dissolving tank 1 is lower than the preset pressure, and the microbubble effect is reduced.

[0045] For example, when the liquid level is high, the water level in the dissolved air tank 1 should be between 1 / 2 and 3 / 4 of the total height of the dissolved air tank.

[0046] When the liquid level detection switch 4 detects that the liquid level in the dissolved air tank 1 is below the high liquid level and higher than or equal to the low liquid level, it means that the air pressure in the dissolved air tank 1 is within the preset pressure and the microbubble effect is optimal.

[0047] For example, when the liquid level is low, the water level in the air dissolving tank should be less than 1 / 4 of the total height of the air dissolving tank, indicating that the condition for closing the aerating device 2 is met when the water in the air dissolving tank is pressed to the low liquid level by air pressure.

[0048] The liquid level detection switch 4 is configured to activate the inflation device 2 when the liquid level detection switch 4 generates a preset high liquid level electrical signal, so as to replenish the air pressure to the air dissolving tank 1 .

[0049] When the liquid level detection switch 4 generates a low liquid level electrical signal, the inflation device 2 is closed to ensure that the air pressure in the dissolved air tank 1 is maintained within an appropriate pressure value range, so that the hot water from the water heater outlet pipe can enter the dissolved air tank 1 normally.

[0050] Preferably, an air pressure sensor is provided at the top wall of the air dissolving tank 1 to detect the air pressure of the air dissolving tank 1. When the liquid level detection switch 4 detects a high liquid level and the air pressure sensor detects that the air pressure is too low, the inflation device 2 is turned on; when the liquid level detection switch 4 detects a low liquid level and the air pressure sensor detects normal air pressure, the inflation device 2 is turned off.

[0051] Preferably, the liquid level detection switch 4 is integrated with a switch module for controlling the power on and off of the inflation device 2 , and the inflation device 2 is electrically connected to the switch module, thereby eliminating the need for an external controller.

[0052] like Figure 3 As shown, in a preferred embodiment of the present invention, a guide plate 5 is further included. The guide plate 5 is arranged in the air dissolving tank 1 corresponding to the water inlet interface 11, and together with the air dissolving tank 1, a uniform flow cavity 51 is formed. The guide plate 5 is provided with a plurality of water holes 52 for breaking up the water flow. The fine water flow through the water holes 52 forms micro-bubble water with a gas-liquid mixing ratio of about 1% to 3%, thereby improving the mixing of gas and liquid.

[0053] When the hot water from the water outlet pipe of the water heater enters the air dissolving tank 1 , it first enters the flow equalization cavity 51 and then enters the main cavity of the air dissolving tank 1 through the water hole 52 .

[0054] like Figure 3 As shown, in a preferred embodiment of the present invention, the guide plate 5 is bowl-shaped, and the water holes 52 are spaced apart on the side wall of the guide plate 5 .

[0055] like Figure 2-3 As shown, in a preferred embodiment of the present invention, a filter screen 34 is provided at the outlet of the first one-way valve 3 , and the specification of the filter screen 34 is preferably above 40 meshes to prevent impurities from entering and blocking the first one-way valve 3 .

[0056] like Figure 3 、 5 As shown in FIG-7 , in a preferred embodiment of the present invention, a portion of the aerating device 2 extends into the air dissolving tank 1, and the air outlet of the aerating device 2 is located above the liquid level in the air dissolving tank 1, so that the aerating device 2 inflates air into the cavity between the liquid surface and the top wall of the air dissolving tank 1. If the air outlet of the aerating device 2 is below the water surface, a gurgling noise will be generated during inflation.

[0057] like Figure 1-4 As shown, in a preferred embodiment of the present invention, the inflation device 2 includes a housing 21 having an air inlet and an air outlet, a pump assembly 22 installed in the housing 21 , and a driving device 23 .

[0058] The first one-way valve 3 is located on the air outlet of the shell 21, the shell 21 is detachably connected to the air dissolving tank 1, the driving device 23 is detachably connected to the shell 21, and the driving device 23 drives the pump air assembly 22 to inhale air through the air inlet and exhaust air through the first one-way valve 3.

[0059] like Figure 1-4 As shown, in a preferred embodiment of the present invention, the housing 21 has a first guide cavity 2111 and a second guide cavity 2121 connected to the first one-way valve 3 , and the first guide cavity 2111 is located between the first one-way valve 3 and the second guide cavity 2121 .

[0060] The housing 21 is provided with at least one first air inlet hole 2122 at the second guide cavity 2121 for drawing in external air.

[0061] The air pump assembly 22 includes a piston 221 , a guide tube 222 and a second one-way valve 223 . A first through hole 2211 is defined at the center of the piston 221 .

[0062] One end of the guide tube 222 is fixed to the center of one side of the piston 221, and the cavity of the guide tube 222 is connected to the first through hole 2211. At least one second air inlet hole 2221 is opened on the side wall of the guide tube 222 for sucking the air sucked in by the first air inlet hole 2122 into the cavity of the guide tube 222.

[0063] The piston 221 is axially movable and sealed in the first guide cavity 2111 , the guide tube 222 is axially movable in the second guide cavity 2121 , and when the pump assembly 22 is in the suction position, the second air inlet 2221 is connected to the first air inlet 2122 .

[0064] The second one-way valve 223 is installed in the first through hole 2211 of the piston 221 . The second one-way valve 223 is configured to allow gas to flow from the guide tube 222 into the first guide cavity 2111 to prevent gas from flowing back.

[0065] When the air pump assembly 22 is in the air compression position, the piston 221 presses the gas in the first guide cavity 2111 into the air dissolving tank 1 through the first one-way valve 3 .

[0066] The principle of the above-mentioned pumping air is as follows: when inhaling, the piston 221 is displaced from the first end of the first guide chamber 2111 to the second end of the first guide chamber 2111. At this time, the first guide chamber 2111 is in a negative pressure state, so that external air is sucked into the first guide chamber 2111 through the first air inlet hole 2122, the second air inlet hole 2221, the cavity of the guide tube 222 and the second one-way valve 223; when exhausting, the piston 221 is displaced from the second end of the first guide chamber 2111 to the first end of the first guide chamber 2111, and the piston 221 presses the air in the first guide chamber 2111 into the dissolved air tank 1 through the first one-way valve 3.

[0067] Of course, the method of pumping air is not limited to the above embodiment, and those skilled in the art can select the method of pumping air into the air dissolving tank 1 according to actual needs.

[0068] like Figure 1-4 As shown, in a preferred embodiment of the present invention, the shell 21 includes a detachably connected cylinder 211 and a mounting seat 212, the first guide cavity 2111 is located in the cylinder 211, the second guide cavity 2121 is located in the mounting seat 212, and the first one-way valve 3 is installed on the cylinder 211.

[0069] For example, the first one-way valve 3 is fixed to the cylinder 211 through a first mounting assembly. The first mounting assembly includes a sealing ring 31 , a first pressing plate 32 and a plurality of screws 33 . The center of the first pressing plate 32 has a vent hole.

[0070] A first annular step is provided on the inner edge of the sealing ring 31 . The central aperture of the sealing ring 31 matches the diameter of the first pressing plate 32 . The first pressing plate 32 is provided with a plurality of first fixing holes.

[0071] One end of the cylinder 211 has a mounting cavity connected to the first guide cavity 2111 , and one end of the mounting cavity has a second annular step. The cylinder 211 is provided with a plurality of second fixing holes corresponding to the first fixing holes and having internal threads around the mounting cavity.

[0072] The first one-way valve 3 is arranged in the installation cavity, and one end of the first one-way valve 3 is abutted against the annular step, the first pressure plate 32 is abutted against the other end of the first one-way valve 3, the sealing ring 31 is located between the first pressure plate 32 and the inner wall of the cylinder 211, and the edge of the first pressure plate 32 is sealed against the first annular step.

[0073] One end of the screw 33 passes through the first fixing hole and is connected to the second fixing hole, thereby installing and fixing the first one-way valve 3 .

[0074] like Figure 4 As shown, in a preferred embodiment of the present invention, the second one-way valve 223 is fixed in the first through hole 2211 by a second mounting assembly. The second mounting assembly includes a second pressing plate 2231 and a plurality of screws. The center of the second pressing plate 2231 has a vent hole.

[0075] The inner wall of the first through hole 2211 has a third annular step, one end of the second one-way valve 223 abuts the third annular step, the second pressure plate 2231 abuts the other end of the second one-way valve 223, and the second pressure plate 2231 is installed on the piston 221 by screws.

[0076] like Figure 1-2As shown, in a preferred embodiment of the present utility model, the air dissolving tank 1 is provided with a mounting interface 13, the cylinder 211 extends into the air dissolving tank 1 through the first mounting interface 13 and is sealed in the first mounting interface 13, the first one-way valve 3 is located at the upper end of the cylinder 211, the lower end of the cylinder 211 is provided with a first flange, and the mounting seat 212 is provided with a second flange, and the second flange, the first flange and the first mounting interface 13 are detachable and sealed.

[0077] The cylinder 211 is embedded and integrated in the air dissolving tank 1, thereby saving the installation space inside the machine.

[0078] like Figure 1-4 As shown, in a preferred embodiment of the present invention, the driving device 23 is a reduction motor, the rotating shaft 231 of the reduction motor has an external thread, the inner wall of the guide tube 222 has an internal thread, the rotating shaft 231 is located in the cavity of the guide tube 222 and the external thread is engaged with the internal thread, and the reduction motor drives the guide tube 222 to move axially between the suction position and the compression position by forward or reverse rotation.

[0079] like Figure 4 As shown, in a preferred embodiment of the present invention, the cross-section of the second guide cavity 2121 is polygonal or semicircular, and the outer wall shape of the guide tube 222 is adapted to the cross-sectional shape of the second guide cavity 2121, so that the guide tube 222 can only be axially displaced in the second guide cavity 2121 and cannot be rotated.

[0080] The reduction motor of the embodiment of the present invention allows a variety of implementation methods to identify that the piston assembly has reached the target position, which can be achieved by monitoring the increase in the motor's stalled current, accumulating the number of motor rotor rotation steps, accumulating the motor's running time, etc. The present invention does not make specific limitations.

[0081] like Figure 1-3 As shown, in a preferred embodiment of the present invention, a water outlet joint 6 is further included, one end of the water outlet joint 6 is installed in the water outlet interface 12, and the terminal water pipe is connected to the water outlet joint 6.

[0082] One end of the liquid level detection switch 4 is installed on the water outlet joint 6. When the water outlet joint 6 is removed, the liquid level detection switch 4 can be removed together, thereby improving the convenience of installation and maintenance.

[0083] In a preferred embodiment of the present invention, the water outlet connector 6 is sealed and sleeved with the water outlet interface 12 , and the water outlet connector 6 and the water outlet interface 12 are fixed together by a clamp 61 .

[0084] like Figure 2 、 3As shown, in a preferred embodiment of the present invention, the liquid level detection switch 4 includes a slide rod 41 and a magnetic float 42. The upper end of the slide rod 41 has a first partition 411 for cooperating with the magnetic float 42 to generate a high liquid level electrical signal. The slide rod 41 is located between the upper and lower ends and has a second partition 412 for cooperating with the magnetic float 42 to generate a low liquid level electrical signal. The magnetic float 42 floats up and down between the first partition 411 and the second partition 412.

[0085] like Figure 2 、 3 As shown, in a preferred embodiment of the present invention, the lower end of the sliding rod 41 has a thread 413, and the lower end of the water outlet joint 6 is provided with a through hole. The lower end of the sliding rod 41 is sealed and passes through the through hole, and the sliding rod 41 is vertically fixed on the water outlet joint 6 by connecting the fixing nut 414 with the thread 413.

[0086] like Figure 5-7 As shown, the present invention further provides a water heater, comprising a water heater body and the above-mentioned micro-bubble generating device, wherein the water heater body comprises a heating module, a controller 7 , a function selection module 8 and a water flow sensor 9 .

[0087] The inflation device 2 , the liquid level detection switch 4 , the heating module, the function selection module 8 and the water flow sensor 9 are electrically connected to the controller 7 respectively.

[0088] The water inlet interface 11 is connected to the water outlet pipe of the water heater body, and the water outlet interface 12 is used to connect to the terminal water pipe.

[0089] Preferably, the function selection module 8 has function operation buttons and a display screen. For example, the function operation buttons include buttons for normal water use, microbubble function, temperature adjustment, mode selection, etc.

[0090] The water heater of the present invention adopts the above-mentioned micro-bubble generating device. When the user turns on the faucet of the terminal water pipe, the hot water from the water outlet pipe of the water heater directly enters the dissolved air tank 1. In addition, when the water heater is in the heating working state, the hot water is continuously injected into the dissolved air tank 1, thereby abandoning the existing process of cutting off the water outlet pipe and the dissolved air tank 1, thereby reducing the time for users to wait for hot water and improving the user experience.

[0091] The water heater mentioned above is a gas water heater or an instant electric water heater.

[0092] Working principle of water heater:

[0093] The controller 7 pre-stores a micro-bubble standby mode and a micro-bubble operation mode;

[0094] The water heater is in standby mode after being powered on, and the microbubble function is in microbubble standby mode;

[0095] After turning on the tap of the terminal water pipe, the water flow sensor 9 detects whether the water flow rate of the water heater is the preset normal water flow rate;

[0096] If the water flow rate is normal (for example, greater than or equal to 2.5L / min), the water heater enters the heating mode, and the microbubble standby mode switches to the microbubble operation mode. In the heating mode and microbubble operation mode, the water outlet pipe of the water heater body continuously injects hot water into the dissolved air tank 1, and the water in the dissolved air tank 1 flows out through the terminal water pipe and faucet;

[0097] When the controller 7 receives the preset high water level electrical signal from the liquid level detection switch 4, the controller 7 starts the aeration device 2 to inflate the dissolved air tank 1. When the controller 7 receives the low water level electrical signal from the liquid level detection switch 4, the controller turns off the aeration device 2 and maintains the micro-bubble operation mode.

[0098] If the water flow rate is lower than the normal water flow rate, the water heater is in a standby state, and the microbubble standby mode remains unchanged. In the microbubble standby mode, the aeration device 2 is always in a closed state.

[0099] In a preferred embodiment of the present invention, when entering the microbubble standby mode, the piston of the inflation device 2 is in the suction position. At this time, the cylinder is filled with air, so that when the air pressure in the air dissolving tank 1 drops after starting, it can be replenished in time, thereby improving the inflation efficiency.

[0100] When the user turns on the faucet of the terminal water pipe, the hot water from the water heater outlet pipe directly enters the dissolved air tank 1, and when the water heater is in the heating working state, the hot water is continuously injected into the dissolved air tank 1, abandoning the existing process of cutting off the water heater outlet pipe and the dissolved air tank 1, thereby reducing the time for users to wait for hot water and improving the user experience.

[0101] In the embodiments of the present invention, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection. Those skilled in the art will understand the specific meanings of these terms in the embodiments of the present invention based on the specific circumstances.

[0102] In the description of the embodiments of the present invention, it is necessary to understand that the terms "upper" and "lower" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the embodiments of the present invention.

[0103] Throughout this specification, terms such as "one embodiment" and "a preferred embodiment" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0104] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can be modified and varied in various ways. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A microbubble generating device, characterized in that: include: The air dissolving tank (1) is provided with a water inlet interface (11) and a water outlet interface (12); An air filling device (2) is connected to the air dissolving tank (1), and an air outlet of the air filling device (2) is in communication with the air dissolving tank (1); a first one-way valve (3) disposed in the air outlet of the inflation device (2), wherein the first one-way valve (3) is configured to allow the inflation device (2) to inflate air into the air dissolving tank (1); A liquid level detection switch (4) is provided in the gas dissolving tank (1), and the liquid level detection switch (4) is configured to open the gas filling device (2) when the liquid level detection switch (4) generates a high liquid level electrical signal, and to close the gas filling device (2) when the liquid level detection switch (4) generates a low liquid level electrical signal.

2. The microbubble generating device according to claim 1, characterized in that The invention also comprises a guide plate (5), the guide plate (5) being arranged in the air dissolving tank (1) corresponding to the water inlet interface (11), and forming a flow-distributing cavity (51) together with the air dissolving tank (1), and the guide plate (5) being provided with a plurality of water holes (52) for breaking up the water flow.

3. The microbubble generating device according to claim 1, wherein The inflation device (2) comprises a housing (21) having an air inlet and an air outlet, an air pump assembly (22) and a driving device (23) installed in the housing (21), the first one-way valve (3) is located on the air outlet of the housing (21), the housing (21) is detachably connected to the air dissolving tank (1), the driving device (23) is detachably connected to the housing (21), and the driving device (23) drives the air pump assembly (22) to inhale air through the air inlet and exhaust air through the first one-way valve (3).

4. The microbubble generating device according to claim 3, characterized in that The housing (21) has a first guide cavity (2111) and a second guide cavity (2121) connected to the first one-way valve (3). The first guide cavity (2111) is located between the first one-way valve (3) and the second guide cavity (2121). The housing (21) is provided with at least one first air inlet hole (2122) at the second guide cavity (2121). The pump assembly (22) includes a piston (221), a guide tube (222) and a second one-way valve (223). A first through hole (2211) is provided at the center of the piston (221). One end of the guide tube (222) is fixed to the center of one side of the piston (221), and the cavity of the guide tube (222) is connected to the first through hole (2211). The side wall of the guide tube (222) is provided with a through hole (2211). There is at least one second air inlet hole (2221), the piston (221) is axially movable and sealed in the first guide cavity (2111), the guide tube (222) is axially movable in the second guide cavity (2121), and when the air pump assembly (22) is in the air suction position, the second air inlet hole (2221) is communicated with the first air inlet hole (2122), the second one-way valve (223) is installed in the first through hole (2211), the second one-way valve (223) is configured to allow gas to flow from the guide tube (222) into the first guide cavity (2111), and when the air pump assembly (22) is in the air compression position, the piston (221) presses the gas in the first guide cavity (2111) into the air dissolving tank (1) through the first one-way valve (3).

5. The microbubble generating device according to claim 4, characterized in that: The housing (21) comprises a detachably connected cylinder (211) and a mounting seat (212); the first guide cavity (2111) is located in the cylinder (211); the second guide cavity (2121) is located in the mounting seat (212); and the first one-way valve (3) is mounted on the cylinder (211).

6. The microbubble generating device according to claim 5, characterized in that The gas dissolving tank (1) is provided with a mounting interface (13), the cylinder (211) is sealed and sleeved in the first mounting interface (13), one end of the cylinder (211) is provided with a first flange, the mounting seat (212) is provided with a second flange, and the second flange, the first flange and the first mounting interface (13) are detachably and sealedly connected.

7. The microbubble generating device according to claim 4, characterized in that: The driving device (23) is a reduction motor, the rotating shaft (231) of the reduction motor has an external thread, the inner wall of the guide tube (222) has an internal thread, the rotating shaft (231) is located in the cavity of the guide tube (222) and the external thread is engaged with the internal thread, and the reduction motor drives the guide tube (222) to move axially between the suction position and the compression position by forward or reverse rotation.

8. The microbubble generating device according to claim 1, wherein It also includes a water outlet joint (6), one end of which is mounted in the water outlet interface (12), and one end of the liquid level detection switch (4) is mounted on the water outlet joint (6).

9. A water heater, characterized in that: The invention comprises a water heater body and a micro-bubble generating device according to any one of claims 1 to 8, wherein the water inlet interface (11) is connected to the water outlet pipe of the water heater body, the water outlet interface (12) is used to be connected to the terminal water pipe, and the inflation device (2) and the liquid level detection switch (4) are both electrically connected to the controller of the water heater body.

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