Micro-bubble generating device and gas water heater thereof

Abstract

The utility model discloses a kind of micro-bubble generating devices, comprising: shell assembly is equipped with first water inlet and second water inlet;Fender, the shell assembly inside is divided into inner cavity and outer cavity located at the periphery of the inner cavity, shunt hole group is equipped in the upper end of the fender, the inner cavity upper end with the outer cavity upper end is connected by the shunt hole group, the second water inlet communicates the inner cavity;Gas filter element, detachably installed in the inner cavity, the first water inlet communicates the outer cavity or the gas filter element.The micro-bubble generating device of the utility model, pre-charging is carried out to the inside of shell assembly using gas filter element and water reaction mode, ensure that micro-bubble water can be automatically output during water using process, low in cost, no noise during aeration process.The utility model further discloses a kind of gas water heater.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, and in particular to a microbubble generator and its gas water heater. Background Technology

[0002] Nano-microbubble water possesses bactericidal and deep-cleaning properties, and does not produce substances harmful to the human body, making it a new trend in the hot water equipment industry. Currently, existing microbubble water heaters on the market have a dissolved air tank installed in the internal water circuit. When the microbubble function is running, the air in the dissolved air tank dissolves into the water under water pressure, forming microbubble water with a gas-liquid mixture ratio of approximately 1% to 3%. Based on a 1L dissolved air tank, this translates to an output of only about 100L of microbubble water. Once the air in the dissolved air tank is depleted, it needs to be refilled using a high-pressure air pump. However, high-pressure air pumps are expensive, occupy significant installation space, and generate considerable noise during operation. Utility Model Content

[0003] This invention aims to at least partially solve one of the problems existing in the prior art. To this end, this invention proposes a microbubble generator that uses a gas-generating filter element and a water chemical reaction to pre-charge the interior of the outer casing assembly, ensuring automatic output of microbubble water during water use. This method is low-cost and produces no noise during the gas-charging process. This invention also provides a gas water heater.

[0004] The microbubble generator described above is achieved through the following technical solution:

[0005] A microbubble generator includes: a housing assembly having a first water inlet and a second water inlet; a surrounding plate, at least a portion of which is disposed within the housing assembly, the surrounding plate dividing the interior of the housing assembly into an inner cavity and an outer cavity located around the inner cavity, a group of diversion holes being provided at the upper end of the surrounding plate, the upper end of the inner cavity communicating with the upper end of the outer cavity through the group of diversion holes, and the second water inlet communicating with the inner cavity; and a gas-generating filter element detachably installed within the inner cavity, the first water inlet communicating with either the outer cavity or the gas-generating filter element.

[0006] In some embodiments, a group of through holes is provided at the lower end of the enclosure, and the lower end of the inner cavity is connected to the lower end of the outer cavity through the group of through holes; and / or a drain outlet is provided at the bottom of the housing assembly, and a switch valve for opening or closing the drain outlet is provided at the drain outlet.

[0007] In some embodiments, the through-hole group includes a plurality of drainage holes, which are circumferentially spaced at the lower end of the enclosure, and the opposite ends of the drainage holes are respectively connected to the lower end of the inner cavity and the lower end of the outer cavity.

[0008] In some embodiments, the gas-generating filter element includes a filter housing and a gas-generating filter material. The filter housing has a filter element cavity that is higher than the drain hole. The filter element cavity is connected to the inner cavity through a plurality of water passage holes. The gas-generating filter material is disposed in the filter element cavity. The first water inlet is connected to the outer cavity.

[0009] In some embodiments, the through-hole group further includes a plurality of lower through-holes located below the drainage hole, the plurality of lower through-holes being circumferentially spaced at the lower end of the enclosure, and the opposite ends of the lower through-holes being connected to the lower end of the inner cavity and the lower end of the outer cavity, respectively.

[0010] In some embodiments, the gas-generating filter element includes a filter housing and a gas-generating filter material. The filter housing has a filter element cavity and a flow channel arranged side by side. The filter element cavity is connected to the inner cavity through a plurality of water passage holes. The gas-generating filter material is disposed in the filter element cavity. The flow channel is higher than the lower water passage hole and is connected to the filter element cavity and the drain hole respectively. A water inlet is opened at the lower end of the enclosure corresponding to the position of the first water inlet. The first water inlet is connected to the flow channel through the water inlet.

[0011] In some embodiments, a plurality of support plates are provided at the lower end of the gas filter element, arranged circumferentially and located around the second water inlet. The bottom of the support plates abuts against the bottom of the outer casing assembly, and a water flow channel is formed between two adjacent support plates.

[0012] In some embodiments, the outer casing assembly includes a dissolved gas tank and an end cap. A first water inlet is provided at the lower end of the side wall of the dissolved gas tank, and an installation port is provided at the bottom of the dissolved gas tank. The end cap is detachably installed at the installation port, and a second water inlet is provided on the end cap. A surrounding plate is disposed inside the dissolved gas tank, and its top abuts against or connects to the top of the dissolved gas tank. The lower end of the surrounding plate passes through the installation port and is sandwiched between the end cap and the dissolved gas tank. The interior of the dissolved gas tank is divided into an inner cavity and an outer cavity by the surrounding plate.

[0013] In some embodiments, an outwardly extending flange is integrally formed on the periphery of the bottom of the enclosure, the flange being detachably connected to the end cap by a plurality of fasteners; and / or an upwardly extending annular boss is provided on the top of the end cap and located around the second water inlet, the annular boss extending into the lower end of the enclosure and abutting against the bottom of the gas filter element.

[0014] In some embodiments, a diversion plate is also included, which is disposed in the outer cavity and located below the diversion hole group. The radial inner end of the diversion plate abuts against or connects to the outer wall of the enclosure plate, and the radial outer end is connected to the side wall of the outer shell assembly. Multiple water diversion holes are formed on the diversion plate.

[0015] The gas water heater described above is achieved through the following technical solution:

[0016] A gas water heater includes: a water heater body with an inner cold water pipe and an inner hot water pipe; a heater disposed on the water heater body, with its cold water inlet and hot water outlet respectively connected to the outlet end of the inner cold water pipe and the inlet end of the inner hot water pipe; a microbubble generator as described above, the microbubble generator being disposed on the water heater body, with a first water inlet and a second water inlet respectively connected to the inlet end of the inner cold water pipe and an external cold water pipe, or the first water inlet and the second water inlet respectively connected to the outlet end of the inner hot water pipe and an external hot water pipe; a water flow sensor disposed on the inner cold water pipe; and a controller disposed on the water heater body, the controller being electrically connected to the heater and the water flow sensor respectively.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] 1. The microbubble generator of this utility model divides the interior of the outer shell assembly into an inner cavity and an outer cavity by a surrounding plate. The upper end of the inner cavity and the upper end of the outer cavity are connected by a diversion hole group. The gas-generating filter element is detachably installed in the inner cavity. The first water inlet is connected to the gas-generating filter element in the inner cavity, and the second water inlet is connected to the inner cavity. In this way, the gas-generating filter element reacts chemically with the water in the outer shell assembly to pre-charge the interior of the outer shell assembly, ensuring that microbubble water can be automatically output during water use. The gas-charging process does not require high-pressure air pumps, water pumps, liquid level sensors, etc., and does not generate noise. It is low in cost and saves internal installation space. 2. By providing a through hole group at the lower end of the surrounding plate, the lower end of the inner cavity and the lower end of the outer cavity are connected by the through hole group, which facilitates the control of the reaction between the gas-generating filter material and water, realizes quantitative gas-charging of the outer shell assembly, and realizes automatic drainage during the pre-charging process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the microbubble generating device in Embodiment 1 of this utility model;

[0020] Figure 2 This is a schematic diagram of the dissolved gas tank and the surrounding plate in Embodiment 1 of this utility model;

[0021] Figure 3 This is a schematic diagram of another microbubble generating device in Embodiment 1 of this utility model;

[0022] Figure 4 This is a schematic diagram of the water heater in the gas production and drainage state in Embodiment 1 of this utility model;

[0023] Figure 5 This is a schematic diagram of the water heater in the water-dissolving gas state in Embodiment 1 of this utility model;

[0024] Figure 6 This is a schematic diagram of the microbubble generator in Embodiment 2 of this utility model;

[0025] Figure 7 This is a schematic diagram of the dissolved gas tank, the surrounding plate, and the diversion plate in Embodiment 2 of this utility model;

[0026] Figure 8 This is a schematic diagram of the water heater in the gas production and drainage state in Embodiment 2 of this utility model;

[0027] Figure 9 This is a schematic diagram of the water heater in the water-dissolving gas state in Embodiment 2 of this utility model.

[0028] In the diagram: 1-Outer shell assembly, 11-Dissolved gas tank, 12-End cap, 121-Second water inlet, 122-Annular boss, 13-Water connector, 131-First water inlet; 2-Enclosure, 211-Inner cavity, 212-Outer cavity, 221-Diverter hole, 222-Drain hole, 223-Lower through hole, 23-Water inlet, 24-Flange; 3-Gas generator filter element, 31-Filter housing, 311-Support plate, 312-Water passage hole, 313-Flow channel, 32-Gas generator filter media; 41-Fastener, 42-Seal, 43-Diverter plate, 431-Diverter hole; 5-Water heater body, 51-Inner cold water pipe, 52-Inner hot water pipe; 6-Heater; 7-Water flow sensor; 8-Controller; 9-Aerator. Detailed Implementation

[0029] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific implementation of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solution claimed by the present invention.

[0030] Example 1

[0031] refer to Figure 1-5This embodiment provides a microbubble generator, including a housing assembly 1, a surrounding plate 2, and a gas-generating filter element 3. The housing assembly 1 is provided with a first water inlet 131 and a second water inlet 121. In this embodiment, the first water inlet 131 is disposed on the side wall of the housing assembly 1, while the second water inlet is disposed on the bottom of the housing assembly. At least a portion of the surrounding plate 2 is disposed inside the housing assembly 1, dividing the interior of the housing assembly 1 into an inner cavity 211 and an outer cavity 212. The outer cavity 212 is located outside the inner cavity 211, and the second water inlet 121 communicates with the lower end of the inner cavity 211. A diversion hole group is provided at the upper end of the enclosure 2, which is higher than the first water inlet 131. The upper end of the inner cavity 211 and the upper end of the outer cavity 212 are connected through the diversion hole group. The diversion hole group includes multiple diversion holes 221 arranged at intervals, which serves to balance the pressure of the inner and outer cavities. At the same time, it facilitates the flow of tap water through the diversion holes to disperse and spray out, forming a shower-like spray water flow that fully mixes with the beneficial gas inside the outer shell assembly 1, thereby forming microbubble water with a gas-liquid mixing ratio of about 1% to 3%.

[0032] The gas-generating filter element 3 is detachably installed in the inner cavity 211 and is used to chemically react with the water stored in the outer shell assembly 1 to generate gases beneficial to the human body, including oxygen or hydrogen. The first water inlet 131 is connected to the outer cavity 212 or the gas-generating filter element 3. In this embodiment, the first water inlet 131 is connected to the outer cavity 212 as an example. At this time, the first water inlet 131 serves as the water outlet, while the second water inlet 121 serves as the water inlet.

[0033] like Figure 4 As shown, when the user does not turn on the water at the water point, if the water level in the outer casing assembly 1 is higher than the set water level, the gas filter element 3 is immersed in the water and reacts with the water to generate beneficial gas. The beneficial gas accumulates on the top of the outer casing assembly 1 and slowly displaces the water inside the outer casing assembly 1. Since the first water inlet 131, which serves as the water outlet, does not discharge water, the water inside the outer casing assembly 1 will be discharged back to the tap water supply pipe at the front end of the water heater through the second water inlet 121, which serves as the water inlet. Figure 5 As shown, as the gas production of the gas-generating filter element 3 increases, the water level in the outer shell assembly 1 gradually decreases. When the water level is lower than the lowest action point of the gas-generating filter element 3, the gas-generating filter material 32 in the gas-generating filter element 3 cannot come into contact with water and stops producing gas, thereby completing the automatic inflation of the outer shell assembly 1.

[0034] like Figure 5As shown, after the outer casing assembly 1 completes gas generation and drainage, when the user uses hot water at the water point, tap water flows into the inner cavity 211 from the second water inlet 121, which serves as the water inlet interface. It then flows through the diversion holes 221 of the enclosure 2 and is dispersed and sprayed out, forming a shower-like spray that fully mixes with the beneficial gas inside the outer casing assembly 1, thus forming microbubble water with a gas-liquid mixing ratio of approximately 1% to 3%. This water then flows from the first water inlet 131, which serves as the water outlet interface, to the water point, satisfying the user's requirement for microbubble water. As tap water continues to flow into the inner cavity of the outer casing assembly 1, the gas-generating filter element 3 is immersed in water and reacts with the water to generate beneficial gas, ensuring a continuous output of microbubble water during the water usage process. It is evident that during the gas generation process of the gas-generating filter element 3 and the water inside the outer casing assembly 1, there is no need for a high-pressure air pump, water pump, or liquid level sensor. The gas filling process is noiseless, low-cost, and helps save internal installation space.

[0035] refer to Figure 1-3 Furthermore, a through-hole group (not shown in the figure) is provided at the lower end of the enclosure 2. The lower end of the inner cavity 211 and the lower end of the outer cavity 212 are connected through the through-hole group, which facilitates the balance of pressure between the inner and outer cavities, and at the same time facilitates the control of the reaction between the gas-generating filter material 2 and water, so as to realize the quantitative inflation of the outer shell assembly 1 and realize automatic drainage during the pre-inflation process; and / or a drain port is provided at the bottom of the outer shell assembly 1, and a switch valve is provided at the drain port for opening or closing it. The drain port is used to connect to the sewer or the tap water supply pipeline at the front end of the water heater. It should be noted that, due to the presence of the drain port and the switch valve, the through-hole group at the lower end of the enclosure 2 can be omitted, so that the lower end of the inner cavity and the lower end of the outer cavity are not connected. During the pre-inflation process, the water stored in the outer shell assembly 1 is discharged through the drain port.

[0036] In this embodiment, the through hole group includes multiple drain holes 222, which are circumferentially spaced at the lower end of the enclosure 2. The two ends of the drain holes 222 are respectively connected to the lower end of the inner cavity 211 and the lower end of the outer cavity 212. The diameter of the drain holes 222 is smaller than the diameter of the diversion hole 221, which helps to balance the pressure of the inner and outer cavities. During the pre-charging process, the water stored in the outer cavity 212 can be discharged into the inner cavity 211 through the drain holes 222, while the water stored in the inner cavity is discharged back to the tap water supply pipeline at the front end of the water heater from the second water inlet 121, which serves as the water inlet interface, thus realizing automatic drainage during the pre-charging process.

[0037] refer to Figure 1The gas-generating filter element 3 includes a filter housing 31 and a gas-generating filter media 32. The filter housing 32 is made of corrosion-resistant filter mesh. The filter housing 31 is detachably installed in the inner cavity, and its top abuts against the top of the outer shell assembly 1. The filter housing 31 has a filter element cavity (not shown in the figure) higher than the drain hole 222. Multiple water passage holes 312 are provided on the side wall and bottom of the filter housing 31. The filter element cavity and the inner cavity 211 are connected through multiple water passage holes 312 to increase the unit water passage area. The gas-generating filter media 32 is provided in the filter element cavity. The gas-generating filter media 32 is sparingly soluble in water and can react with water to produce beneficial gases to meet a sufficiently long service life. The gas-generating filter media 32 is hydrogen-rich spheres, calcium peroxide particles, or other materials. Among them, the hydrogen-rich spheres can react with water to slowly generate hydrogen, and the calcium peroxide particles react with water to generate oxygen. Thus, by selecting different materials for the gas-generating filter media, microbubble water with different effects can be achieved, such as hydrogen-rich microbubbles or oxygen-rich microbubbles. In this embodiment, the first water inlet 131 is connected to the outer cavity 212, and the volume of the gas filter element 3 is greater than 100mL.

[0038] refer to Figure 1 Multiple support plates 311 are arranged circumferentially at the lower end of the gas-generating filter element 3 and located around the second water inlet 121. In this embodiment, the top of the filter shell 31 abuts against the top of the outer shell assembly 1, and the multiple support plates 311 are arranged circumferentially at the bottom of the filter shell 31. The bottom of the support plates 311 abuts against the bottom of the outer shell assembly 1, and a water flow channel is formed between two adjacent support plates 311, thereby realizing the stable installation of the gas-generating filter element 3 inside the inner cavity of the outer shell assembly 1.

[0039] refer to Figure 1-2 The outer casing assembly 1 includes a dissolved gas tank 11 and an end cap 12. A water connector 13 is provided at the lower end of the side wall of the dissolved gas tank 11, and the water connector 13 has a first water inlet 131 arranged laterally and communicating with the outer cavity. An installation port is opened at the bottom of the dissolved gas tank 11, and the end cap 12 is detachably installed at the installation port and detachably connected to the dissolved gas tank 11 or the surrounding plate 2. A second water inlet 121 is opened on the end cap 12. The surrounding plate 2 is disposed inside the dissolved gas tank 11, and its top abuts against or connects to the top of the dissolved gas tank 11. The lower end of the surrounding plate 2 passes through the installation port and is sandwiched between the end cap 12 and the dissolved gas tank 11. The interior of the dissolved gas tank 11 is divided into an inner cavity 211 and an outer cavity 212 by the surrounding plate 2. The dissolved gas tank 11 is made of corrosion-resistant metal such as stainless steel or high-strength plastic, and the volume of the outer cavity 212 is greater than 500 ml to meet the user's water demand for microbubble water.

[0040] Specifically, the lower end of the enclosure plate 2 passes through the mounting port of the dissolved gas tank 11 and is fixedly connected to the dissolved gas tank 11 as a whole, so the enclosure plate 2 cannot be removed from the dissolved gas tank. A flange portion 24 extending outwards is integrally formed on the periphery of the bottom of the enclosure plate 2. The flange portion 24 is detachably connected to the end cover 12 by multiple fasteners 41, thereby making the end cover 12 and the enclosure plate 2 detachably connected as a whole; and / or an annular boss 122 extending upwards and located around the second water inlet 121 is provided on the top of the end cover 12. The annular boss 122 extends into the lower end of the enclosure plate 2 and abuts against the bottom of the support plate of the gas generating filter element 3, thereby pressing the gas generating filter element 3 tightly into the dissolved gas tank 11 using the end cover, while facilitating quick replacement of the gas generating filter element 3. In addition, a sealing element 42 is provided between the lower end of the enclosure plate 2 and the annular boss 122 to improve airtightness and prevent water leakage at the connection.

[0041] refer to Figure 3 Furthermore, the microbubble generator also includes a flow divider plate 43, which is disposed within the outer cavity 212 and located below the flow divider hole group. The radially inner end of the flow divider plate 43 abuts against or connects to the outer wall of the surrounding plate 2, and the radially outer end connects to the side wall of the outer shell assembly 1. Multiple water-dividing holes 431 are provided on the flow divider plate 43 to improve the dissolved gas effect of the outer shell assembly 1. It should be noted that in other embodiments, the flow divider plate 43 can be omitted to simplify the overall structure of the device.

[0042] refer to Figure 4-5 This embodiment also provides a gas water heater, which includes a water heater body 5, a heater 6, a water flow sensor 7, a controller 8, and a microbubble generator as described above. The water heater body 5 is provided with an inner cold water pipe 51 and an inner hot water pipe 52. The heater 6 is disposed on the water heater body 5, and its cold water inlet and hot water outlet are respectively connected to the outlet end of the inner cold water pipe 51 and the inlet end of the inner hot water pipe 52. The microbubble generator is disposed on the water heater body 5, and the first water inlet 131 and the second water inlet 121 are respectively connected to the inlet end of the inner cold water pipe 51 and the external cold water pipe. At this time, tap water can flow into the outer casing assembly 1 from the second water inlet 121, and then flow into the inner cold water pipe 51 from the first water inlet 131 of the outer casing assembly 1. The water flow sensor 7 is disposed on the inner cold water pipe 51 and is used to detect the water flow rate through the inner cold water pipe. The controller 8 is disposed on the water heater body 5, and the controller 8 is electrically connected to the heater 6 and the water flow sensor 7 respectively.

[0043] Specifically, the microbubble generator is installed at the bottom of the water heater body 5, and the gasifier filter 3 can be quickly replaced via the removable end cap 12. The controller 8 can calculate the consumption of the gasifier filter 3 based on the cumulative water consumption or the cumulative water heater running time of the water flow sensor 7. When the gasifier filter 3 reaches its service life, it will generate a corresponding alarm prompt to notify the user to replace the gasifier filter 3 in time to ensure the microbubble effect. In addition, an aerator 9 is provided at the water point, and the aerator 9 is connected to the internal hot water pipe 52 through the external hot water pipe.

[0044] like Figure 4 As shown, when the water heater is in standby mode and the user has not turned on the water, if the water level in the outer casing 1 is higher than the set water level, the gas filter 3 is immersed in the water and reacts with the water to generate beneficial gas. The beneficial gas accumulates on the top of the outer casing 1 and slowly displaces the water inside the outer casing 1. Since the first water inlet 131, which serves as the water outlet, is not discharging water (i.e., the water outlet pipe is closed), the water inside the outer casing 1 will be discharged back into the tap water supply pipe at the front end of the water heater through the second water inlet 121, which serves as the water inlet. Figure 5 As shown, as the gas production of the gas-generating filter element 3 increases, the water level in the outer shell assembly 1 gradually decreases. When the water level is lower than the lowest action point of the gas-generating filter element 3, the gas-generating filter material 32 in the gas-generating filter element 3 cannot come into contact with water and stops producing gas, thereby completing the automatic inflation of the outer shell assembly 1.

[0045] like Figure 5 As shown, after the outer casing assembly 1 completes gas generation and drainage, if the user uses hot water at the water point and the water flow sensor 7 detects a water flow rate greater than the start-up flow rate, the controller 8 turns on the heater 6 to quickly heat the flowing cold water. At the same time, when the tap water flows through the microbubble generator, it is dispersed and sprayed out through the diversion hole of the enclosure 2, forming a sprinkler-like spray that fully mixes with the beneficial gas inside the outer casing assembly 1, thereby forming microbubble water with a gas-liquid mixing ratio of about 1% to 3%. The water then flows from the first water inlet to the heater 6, and after being heated, it flows to the water point to meet the user's microbubble water requirements.

[0046] Example 2

[0047] refer to Figure 6-9 The difference between this embodiment and Embodiment 1 lies in the specific structure and installation position of the microbubble generator. The microbubble generator includes a housing assembly 1, a surrounding plate 2, and a gas-generating filter element 3. The housing assembly 1 has a first water inlet 131 and a second water inlet 121. In this embodiment, the first water inlet 131 is located on the side wall of the housing assembly 1 as a water inlet, while the second water inlet is located at the bottom of the housing assembly as a water outlet. At least a portion of the surrounding plate 2 is disposed within the housing assembly 1, dividing the interior of the housing assembly 1 into an inner cavity 211 and an outer cavity 212. The outer cavity 212 is located outside the inner cavity 211, and the second water inlet 121 connects to the lower end of the inner cavity 211.

[0048] A diversion hole group is provided at the upper end of the enclosure 2, which is higher than the first water inlet 131. The upper end of the inner cavity 211 and the upper end of the outer cavity 212 are connected through the diversion hole group. The diversion hole group includes multiple diversion holes 221 arranged at intervals, so as to facilitate the flow of tap water through the diversion holes and spray it out, forming a shower-like spray water flow that fully mixes with the beneficial gas inside the outer shell assembly 1, thereby forming microbubble water with a gas-liquid mixing ratio of about 1% to 3%. A through hole group is provided at the lower end of the enclosure 2. The lower end of the inner cavity 211 and the lower end of the outer cavity 212 are connected through the through hole group, which plays a role in balancing the pressure of the inner and outer cavities, and at the same time facilitates automatic drainage during the pre-filling process.

[0049] refer to Figure 6-7 In this embodiment, the through-hole group includes multiple drainage holes 222, which are circumferentially spaced at the lower end of the surrounding plate 2. The opposite ends of the drainage holes 222 are respectively connected to the lower end of the inner cavity 211 and the lower end of the outer cavity 212, and the diameter of the drainage holes 222 is smaller than the diameter of the diversion holes 221. In addition, the through-hole group also includes multiple lower through-holes 223 located below the drainage holes 222. The multiple lower through-holes 223 are circumferentially spaced at the lower end of the surrounding plate 2, and the opposite ends of the lower through-holes 223 are respectively connected to the lower end of the inner cavity 211 and the lower end of the outer cavity 212, so as to facilitate the flow of microbubble water in the outer cavity into the lower end of the inner cavity through the lower through-holes, and then out from the second water inlet, which serves as the water outlet.

[0050] refer to Figure 6 The gas-generating filter element 3 includes a filter housing 31 and a gas-generating filter material 32. The filter housing 31 has a filter element cavity and a flow channel 313 arranged side by side. The filter element cavity is connected to the inner cavity 211 through multiple water passages 312. The gas-generating filter material 32 is provided in the filter element cavity. The flow channel 313 is higher than the lower water passage 223 and is connected to the filter element cavity and the drain hole 222 respectively. Specifically, a water inlet hole (not shown in the figure) is opened at the position of the flow channel 313 corresponding to the drain hole 222. The drain hole 222 is connected to the inside of the flow channel 313 through the corresponding water inlet hole, and the flow channel 313 is connected to the filter element cavity through the water passage 312 at the bottom of the filter housing 31. A water inlet 23 is provided at the lower end of the enclosure 2 at the position corresponding to the first water inlet 131. The first water inlet 131 is connected to the flow channel 313 through the water inlet 23. In this embodiment, the flow channel 313 is provided to facilitate the connection of the first water inlet 131 to the gas filter element 3, and to isolate the water flow, preventing the water flowing from the lower water hole 223 into the lower end of the inner cavity 211 from flowing upward into the flow channel 313.

[0051] refer to Figure 8-9 The microbubble generator is installed on the water heater body 5. The first water inlet 131 and the second water inlet 121 are respectively connected to the outlet of the inner hot water pipe 52 and the external hot water pipe.

[0052] like Figure 8As shown, when the water heater is in standby mode and the user has not turned on the water, if the water level in the outer casing 1 is higher than the set water level, the gas filter 3 is immersed in the water and reacts with the water to generate beneficial gas. The beneficial gas accumulates on the top of the outer casing 1 and slowly displaces the water inside the outer casing 1. Since the second water inlet, which serves as the water outlet, is not discharging water (i.e., the water outlet pipe is closed), the water inside the outer casing 1 will thus be discharged back to the tap water supply pipe at the front end of the water heater through the first water inlet, which serves as the water inlet. Figure 9 As shown, as the gas production of the gas-generating filter element 3 increases, the water level in the outer shell assembly 1 gradually decreases. When the water level is lower than the lowest action point of the gas-generating filter element 3, the gas-generating filter material 32 in the gas-generating filter element 3 cannot come into contact with water and stops producing gas, thereby completing the automatic inflation of the outer shell assembly 1.

[0053] like Figure 9 As shown, after the outer casing assembly 1 completes gas generation and drainage, if the user uses hot water at the water point and the water flow sensor 7 detects a water flow rate greater than the start-up flow rate, the controller 8 activates the heater 6 to rapidly heat the flowing cold water. The heated water flows through the microbubble generator and is dispersed and sprayed out through the diversion holes in the enclosure 2, forming a sprinkler-like spray that fully mixes with the beneficial gas inside the outer casing assembly 1, thus forming microbubble water with a gas-liquid mixing ratio of approximately 1% to 3%. This water then flows from the second water inlet to the water point to meet the user's microbubble water requirements. The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A microbubble generator, characterized in that, include: The outer casing assembly (1) is provided with a first water inlet (131) and a second water inlet (121). A enclosure (2), at least a portion of which is disposed within the outer shell assembly (1), the enclosure (2) dividing the interior of the outer shell assembly (1) into an inner cavity (211) and an outer cavity (212) located around the inner cavity (211). A diversion hole group is provided at the upper end of the enclosure (2), and the upper end of the inner cavity (211) and the upper end of the outer cavity (212) are connected through the diversion hole group. The second water inlet (121) is connected to the inner cavity (211). The gas-generating filter element (3) is detachably installed in the inner cavity (211), and the first water inlet (131) is connected to the outer cavity (212) or the gas-generating filter element (3).

2. The microbubble generator according to claim 1, characterized in that, A through-hole group is provided at the lower end of the enclosure (2), and the lower end of the inner cavity (211) is connected to the lower end of the outer cavity (212) through the through-hole group; and / or a drain outlet is provided at the bottom of the outer shell assembly (1), and a switch valve for opening or closing the drain outlet is provided at the drain outlet.

3. The microbubble generator according to claim 2, characterized in that, The through hole group includes a plurality of drainage holes (222), which are circumferentially spaced at the lower end of the enclosure (2). The two ends of the drainage holes (222) are respectively connected to the lower end of the inner cavity (211) and the lower end of the outer cavity (212).

4. A microbubble generator according to claim 3, characterized in that, The gas-generating filter element (3) includes a filter shell (31) and a gas-generating filter material (32). The filter shell (31) is provided with a filter element cavity higher than the drain hole (222). The filter element cavity is connected to the inner cavity (211) through multiple water passage holes (312). The gas-generating filter material (32) is provided in the filter element cavity. The first water inlet (131) is connected to the outer cavity (212).

5. A microbubble generator according to claim 3, characterized in that, The through hole group also includes a plurality of lower through holes (223) located below the drainage hole (222). The plurality of lower through holes (223) are circumferentially spaced at the lower end of the enclosure (2). The two ends of the lower through holes (223) are respectively connected to the lower end of the inner cavity (211) and the lower end of the outer cavity (212).

6. A microbubble generator according to claim 5, characterized in that, The gas-generating filter element (3) includes a filter shell (31) and a gas-generating filter material (32). The filter shell (31) is provided with a filter element cavity and a flow channel (313) arranged side by side. The filter element cavity is connected to the inner cavity (211) through multiple water passages (312). The gas-generating filter material (32) is provided in the filter element cavity. The flow channel (313) is higher than the lower through hole (223) and is connected to the filter element cavity and the drain hole (222) respectively. A water inlet (23) is opened at the lower end of the enclosure (2) corresponding to the position of the first water inlet (131). The first water inlet (131) is connected to the flow channel (313) through the water inlet (23).

7. A microbubble generating device according to any one of claims 1-6, characterized in that, Multiple support plates (311) are arranged circumferentially at the lower end of the gas filter element (3) and located around the second water inlet (121). The bottom of the support plate (311) abuts against the bottom of the outer shell assembly (1), and a water flow channel is formed between two adjacent support plates (311).

8. A microbubble generator according to claim 1, characterized in that, The outer shell assembly (1) includes a dissolved gas tank (11) and an end cap (12). The first water inlet (131) is provided at the lower end of the side wall of the dissolved gas tank (11). An installation port is provided at the bottom of the dissolved gas tank (11). The end cap (12) is detachably installed at the installation port. A second water inlet (121) is provided on the end cap (12). The enclosure plate (2) is disposed inside the dissolved gas tank (11) and its top abuts against or connects to the top of the dissolved gas tank (11). The lower end of the enclosure plate (2) passes through the installation port and is sandwiched between the end cap (12) and the dissolved gas tank (11). The interior of the dissolved gas tank (11) is divided into an inner cavity (211) and an outer cavity (212) by the enclosure plate (2).

9. A microbubble generator according to claim 8, characterized in that, An outwardly extending flange (24) is integrally formed on the periphery of the bottom of the enclosure (2), and the flange (24) is detachably connected to the end cap (12) by a plurality of fasteners (41); and / or An annular boss (122) extending upward and located around the second water inlet (121) is provided on the top of the end cap (12). The annular boss (122) extends into the lower end of the enclosure (2) and abuts against the bottom of the gas filter element (3).

10. A microbubble generating device according to any one of claims 1-6 or 8-9, characterized in that, It also includes a diversion plate (43), which is disposed in the outer cavity (212) and located below the diversion hole group. The radial inner end of the diversion plate (43) abuts or connects to the outer wall of the enclosure plate (2), and the radial outer end is connected to the side wall of the outer shell assembly (1). Multiple water diversion holes (431) are provided on the diversion plate (43).

11. A gas-fired water heater, characterized in that, include: The water heater body (5) is equipped with an internal cold water pipe (51) and an internal hot water pipe (52). A heater (6) is installed on the water heater body (5), and its cold water inlet and hot water outlet are respectively connected to the outlet end of the inner cold water pipe (51) and the inlet end of the inner hot water pipe (52); A microbubble generating device as described in any one of claims 1-10, wherein the microbubble generating device is disposed on the water heater body (5), and the first water inlet (131) and the second water inlet (121) are respectively connected to the inlet end of the inner cold water pipe (51) and the outer cold water pipe, or the first water inlet (131) and the second water inlet (121) are respectively connected to the outlet end of the inner hot water pipe (52) and the outer hot water pipe; A water flow sensor (7) is installed on the internal cooling water pipe (51); The controller (8) is installed on the water heater body (5) and is electrically connected to the heater (6) and the water flow sensor (7).

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