A gas water heater capable of generating microbubble water

Abstract

The present application belongs to the technical field of water heaters, and discloses a gas water heater capable of generating micro-bubble water, which comprises a shell, a micro-bubble water generator and a heat exchanger arranged in the shell, the micro-bubble water generator is connected with a water outlet pipe of the heat exchanger, and a water outlet connecting pipe is connected with a water outlet of the micro-bubble water generator, the micro-bubble water generator comprises a throat pipe and a gas cutting piece, the gas cutting piece is arranged at a throat position of the throat pipe, external air can enter the throat pipe through micro gaps of the gas cutting piece and mix with water to form micro-bubble water, and the micro-bubble water flows out through the water outlet connecting pipe. By arranging the micro-bubble water generator and the gas cutting piece, air can enter the throat pipe through the micro gaps of the gas cutting piece and mix with water to form micro-bubble water, which can then flow out through the water outlet connecting pipe for use by a user, and the cleaning effect is higher and the user experience is better.

Description

Technical Field

[0001] This invention relates to the field of water heater technology, and in particular to a gas water heater capable of generating microbubble water. Background Technology

[0002] Microbubbles are tiny bubbles with a diameter of less than 50 μm. Under certain pressure, they are formed by thoroughly mixing gas (such as air) with water to create a gas-water solution. The solution then expands and releases the pressure, causing the dissolved gas to suddenly coalesce into tiny microbubbles, resulting in a milky white color. The resulting microbubble water has strong cleaning power; the pressure and heat generated when the microbubbles burst instantly remove dirt, achieving a deep cleaning effect.

[0003] Gas water heaters, as common household appliances, have brought great convenience to people's lives. However, with the increasing demands for cleanliness and hygiene, existing gas water heaters are gradually failing to meet these needs. The application of microbubble water technology can precisely address these hygiene requirements. However, most existing gas water heaters lack microbubble water generation capabilities, or only offer the concept without a concrete structure. Therefore, designing a gas water heater that can incorporate microbubble water generation to provide users with the microbubble water they require is a problem that needs to be solved. Summary of the Invention

[0004] The purpose of this invention is to provide a gas water heater that can generate microbubble water, thereby improving the user experience.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A gas water heater capable of generating microbubble water includes a housing, a microbubble water generator and a heat exchanger disposed within the housing, the microbubble water generator being connected to the outlet pipe of the heat exchanger, and the outlet of the microbubble water generator being connected to an outlet pipe, the microbubble water generator including a throat and a gas cutting element, the gas cutting element being disposed at the throat of the throat, outside air can enter the throat through the micro-gap of the gas cutting element and mix with water to form microbubble water, the microbubble water flowing out through the outlet pipe.

[0007] Preferably, the gas cutting element is a gasket, which is stacked along the axial direction of the throat tube at the throat of the throat tube, and the micro-gap is formed between the gaskets.

[0008] Preferably, the sidewalls of the gaskets have a surface roughness, and the microgap is formed between the sidewalls of adjacent gaskets.

[0009] Preferably, the gasket has several shearing grooves on both sides of its axial direction.

[0010] Preferably, the microbubble water generator further includes an air inlet pipe, and the gas cutting element is a plate disposed in the air inlet pipe, the plate having a plurality of the micro gaps.

[0011] Preferably, the gas cutting element is a sintered filter element disposed at the throat, and the peripheral wall of the sintered filter element has a plurality of micro-gaps formed thereon.

[0012] Preferably, the microbubble water generator includes a bypass pipe that connects to both sides of the throat of the throat tube.

[0013] Preferably, the microbubble water generator further includes a distribution valve configured to adjust the ratio of water flowing into the throat inlet and the bypass pipe.

[0014] Preferably, the microbubble water generator includes an air inlet pipe and an air pump, wherein the air inlet pipe is connected to the throat of the throat tube, and the air pump is connected to the air inlet pipe.

[0015] Preferably, a support is installed inside the housing, and the throat tube and the air pump are fixed to the support.

[0016] The beneficial effects of this invention are as follows: by setting a microbubble water generator, and the microbubble water generator is equipped with a gas cutting element, air can enter the throat through the micro gap of the gas cutting element and mix with water to form microbubble water, which can then flow out through the water outlet pipe for user use. This results in higher cleaning effect and a better user experience. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a gas water heater capable of generating microbubble water provided by the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of a gas water heater that can generate microbubble water, provided by the present invention, showing a microbubble water generator.

[0019] Figure 3 This is the present invention. Figure 2 Enlarged view of point A;

[0020] Figure 4 This is a three-dimensional structural diagram of the first microbubble water generator provided by the present invention;

[0021] Figure 5 This is a cross-sectional view of the first microbubble water generator provided by the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the gasket for the first microbubble water generator provided by the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of the second pipe of the first microbubble water generator provided by the present invention;

[0024] Figure 8 This is a three-dimensional structural diagram of the second type of microbubble water generator provided by the present invention;

[0025] Figure 9 This is a cross-sectional view of the second type of microbubble water generator provided by the present invention;

[0026] Figure 10 This is a schematic diagram of the structure of the first pipe of the second type of microbubble water generator provided by the present invention;

[0027] Figure 11 This is a cross-sectional view of the first pipe of the second type of microbubble water generator provided by the present invention;

[0028] Figure 12 This is a schematic diagram of the structure of the second pipe of the second type of microbubble water generator provided by the present invention;

[0029] Figure 13 This is a three-dimensional structural diagram of the third type of microbubble water generator provided by the present invention;

[0030] Figure 14 This is a cross-sectional view of the third type of microbubble water generator provided by the present invention.

[0031] In the picture:

[0032] 1. Microbubble water generator; 11. Gas cutting component; 111. Shearing groove; 112. First plate; 113. Second plate; 114. Groove; 12. Air inlet pipe; 121. Air inlet channel; 13. First pipe; 131. First liquid channel; 1311. First diameter reducing section; 132. Annular chamber; 133. Threaded connection hole; 14. Second pipe; 141. Second liquid channel; 1411. Second diameter reducing section; 1412. Equal diameter section; 142. Connecting hole; 143. Sealing groove; 144. Connection hole; 15. Third pipe; 151. Third liquid channel; 152. Fourth liquid channel; 16. Detection device; 17. Bypass pipe; 18. Distribution valve; 19. Rubber gasket; 10. Air pump; 2. Heat exchanger; 3. Water outlet pipe; 4. Support; 5. Shell. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0034] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0037] This invention provides a gas water heater capable of producing microbubble water, which offers superior cleaning performance and a better user experience. Figure 1 and Figure 2 As shown, the gas water heater capable of generating microbubble water includes a housing 5, a microbubble water generator 1 and a heat exchanger 2 disposed within the housing 5, wherein one end of the microbubble water generator 1 is connected to the outlet of the heat exchanger 2, and the other end of the microbubble water generator 1 is connected to the outlet pipe 3 installed on the housing 5. Cold water flows into the heat exchanger 2 and is heated by combustion by the burner, then flows into the microbubble water generator 1 through the outlet, where it mixes with the air flowing into the microbubble water generator 1 to form microbubble water, which is then delivered to faucets, shower heads, etc., for user use.

[0038] In this embodiment, the microbubble water generator 1 includes a throat and a gas cutter 11. The gas cutter 11 is located at the throat of the throat. Outside air can enter the throat through the micro-gap of the gas cutter 11 and mix with the hot water flowing out of the heat exchanger 2 to form microbubble water. One end of the throat serves as the water inlet, and the other end is connected to the water outlet pipe 3.

[0039] In one embodiment, exemplarily, such as Figure 4 and Figure 5 As shown, in this embodiment, the gas cutting element 11 of the microbubble water generator 1 consists of multiple gaskets, which are stacked along the axial direction of the throat tube at the throat. By placing gaskets at the throat, air enters the throat tube through the micro-gap between the gaskets and mixes with the hot water flowing out of the heat exchanger 2. Because the micro-gap between the gaskets is small, it can shear the air, thus transforming it into finer, higher-pressure air. Simultaneously, the throat tube structure increases the water flow rate and lowers the pressure. Combined with the higher-pressure finer air, this allows for more and easier integration of air into the water, resulting in microbubble water containing 10 bubbles per milliliter. 6 The microbubble water generator 1 of this invention produces better microbubble water and can continuously generate microbubble water. Moreover, the microbubble water generator 1 of this invention can produce microbubble water with a bubble diameter of 47 micrometers at 0.3 MPa, which is smaller than the bubble particle size produced by bubble generators in the prior art, and achieves better cleaning effect.

[0040] like Figure 5 As shown, the microbubble water generator 1 includes a gasket, an air inlet pipe 12, a first pipe 13, and a second pipe 14, wherein:

[0041] One end of the second pipe 14 is sealed inside the first pipe 13, forming the throat between them. A gasket is disposed at the throat of the throat. Exemplarily, a first liquid channel 131 can be formed inside the first pipe 13, with one end for water inlet. A second liquid channel 141 can be formed inside the second pipe 14, with one end connected to the first liquid channel 131 and the other end connected to the water outlet pipe 3. Along the direction pointing towards the gasket, the diameters of both the first liquid channel 131 and the second liquid channel 141 near the gasket gradually decrease to form the throat. When hot water flows into the throat from the heat exchanger 2, the throat generates an adsorption force that draws air into the micro-gap between the gaskets, where it is sheared into finer, higher-pressure air, which then mixes with the water to form microbubble water. In this embodiment, at least two gaskets are provided between the first liquid channel 131 and the second liquid channel 141, and the first liquid channel 131, the at least two gaskets, and the second liquid channel 141 are sequentially connected. Water can flow through the first liquid channel 131, through the gaskets, and finally out through the second liquid channel 141. Air can enter the throat through the micro-gap between the two gaskets and mix with water to form microbubble water.

[0042] Preferably, one end of the second pipe 14 is threaded to the first pipe 13, and a gasket is sandwiched between the first pipe 13 and the second pipe 14. The threaded connection between the second pipe 14 and the first pipe 13 achieves a fixed connection between them. More importantly, by screwing on the second pipe 14, the clamping force applied to the gasket by the second pipe 14 and the first pipe 13 can be adjusted, thereby adjusting the size of the micro-gap between the gaskets to meet the requirements for generating different microbubble water.

[0043] In this embodiment, the first pipe 13 is provided with an air inlet and an annular chamber 132 connected to the air inlet. An air intake channel 121 is opened in the air intake pipe 12, and the air intake pipe 12 is sealed to the air inlet so that the air intake channel 121 connects to the annular chamber 132. After the outside air flows into the annular chamber 132 through the air intake channel 121, it is distributed in an annular shape in the annular chamber 132, and then enters the micro gaps between the gaskets evenly along the circumference of the gaskets, so that the microbubble water generation is more uniform and the effect is better. In this embodiment, an air pump 10 can also be connected to one end of the air intake pipe 12. The air pump 10 pumps air into the air intake pipe 12. With the automatic adsorption of the throat, the air can be more easily dissolved in water, thereby making the formed microbubble water effect better. In addition, when the water pressure is too high, the air pump 10 can be used to boost the air to the throat, so that the air can be more easily dissolved in water.

[0044] In this embodiment, the connection between the intake pipe 12 and the first pipe 13 can also be achieved by threaded connection and sealed with a sealing ring.

[0045] In this embodiment, the aforementioned gasket can be set to two or more as needed, thereby creating multiple micro-gaps and making the microbubble water generation speed faster.

[0046] It is understandable that micro-gap is also formed between the gasket and the first pipe 13 and between the gasket and the second pipe 14 in this embodiment. This micro-gap can also be used to shear air to form tiny gas particles, which enter the liquid channel at a higher flow rate and mix with the water in the liquid channel to form microbubble water.

[0047] In this embodiment, it can be referred to Figure 6 The aforementioned gaskets have a rough surface, which creates minute unevenness, resulting in micro-gaps between the two gaskets. Air passing through these micro-gaps is sheared and eventually mixes with water. The micro-gaps are formed solely by the inherent properties of the gasket material, eliminating the need for additional structures to aid in the generation of microbubbles. The structure is simple and easy to assemble.

[0048] As another preferred embodiment, a plurality of shear grooves 111 can be formed on the surfaces of the gaskets on both sides along the axial direction, and a micro gap is formed between the shear grooves 111 of two adjacent gaskets.

[0049] Optionally, the gasket can be made of a foam-like metal, in which case the shear groove 111 is a cavity in the foam-like metal. Alternatively, the gasket can be made of an alloy material, in which case the shear groove 111 can be created by directional etching. The gasket can also be cast from a porous plate, in which case the shear groove 111 is a cavity in the porous plate. Furthermore, the gasket can be formed by stacking layers of porous graphite, in which case the shear groove 111 is a cavity on the porous graphite.

[0050] In this embodiment, the plurality of shear grooves 111 can be arranged in parallel or crosswise. Figure 6 (as shown), to achieve shearing of the air inside the annular chamber 132.

[0051] For reference Figure 6The aforementioned gasket includes a first sheet 112 and a second sheet 113 arranged in a stepped pattern, which are integrally formed. The diameter of the first sheet 112 is smaller than the diameter of the second sheet 113, and both the first sheet 112 and the second sheet 113 have shear grooves 111 on their surfaces. This gasket structure allows an annular space to be formed between its end face with the adjacent first pipe 13, the end face with the second pipe 14, and between two adjacent gaskets. When air flows into the annular chamber 132, the air is evenly distributed within the annular space, and then flows evenly into the micro-gap between the gasket and the first liquid channel 131, the micro-gap between the gaskets, and the micro-gap between the gasket and the second liquid channel 141, where it is sheared. This shearing process causes the fine air particles formed to be evenly mixed into the water, resulting in more uniform and comprehensive distribution of microbubble water.

[0052] In this embodiment, the gasket has a groove 114 on the side near the first liquid channel 131 and the second liquid channel 141, and a protrusion is provided at the end face of the first pipe 13 and the second pipe 14, which abuts against the groove 114. That is, the groove 114 and the protrusion allow the first pipe 13 and the second pipe 14 to clamp the gasket, thus fixing the gasket. More importantly, it makes the micro-gap formed by the shear groove 111 narrower, resulting in finer air shearing and a better microbubble water effect. It should be noted that the sidewall of the groove 114 in this embodiment can also have a shear groove 111.

[0053] For reference Figure 5 The microbubble water generator 1 in this embodiment further includes a third pipe 15, which is sealed to the end of the first pipe 13 away from the gasket, and the third pipe 15 has a third liquid channel 151 communicating with the first liquid channel 131. An inlet is provided on the third pipe 15 communicating with the third liquid channel 151, and this inlet is connected to the outlet of the heat exchanger 2. Hot water enters the third liquid channel 151 through the inlet and then enters the first liquid channel 131. In this embodiment, one end of the third pipe 15 is placed inside the first pipe 13, and the two are sealed together by a sealing ring.

[0054] Preferably, a detection device 16 is provided at one end of the third pipe 15. This detection device 16 is used to detect flow rate, pressure, and / or temperature. For example, the detection device 16 can be a temperature sensor to detect the temperature of the water flowing into the third liquid channel 151, a pressure sensor to detect the pressure of the water flowing into the third liquid channel 151, or a flow sensor to detect the flow rate of the water flowing into the third liquid channel 151. Devices that simultaneously detect two or more of temperature, pressure, and flow rate can also be used. By detecting flow rate, pressure, and / or temperature, a controller can be used to control the water flow rate, pressure, and temperature to meet different needs.

[0055] Preferably, the microbubble water generator 1 of this embodiment further includes a bypass pipe 17, which connects to both sides of the throat of the throat tube. By providing the bypass pipe 17, water can flow through the throat of the throat tube and mix with fine air to form microbubble water, while another part mixes with the formed microbubble water, thereby changing the bubble content in the microbubble water flowing out of the outlet. In this embodiment, one end of the bypass pipe 17 is connected to the inlet of the third pipe 15, and the other end is connected to the second pipe 14 (… Figure 7 As shown, the second pipe 14 has a connecting hole 142 that connects to the second liquid channel 141, and the bypass pipe 17 is sealed and connected to the connecting hole 142. In this embodiment, the diameter of the bypass pipe 17 is larger than the maximum diameter of the throat pipe.

[0056] To better achieve stepless adjustment of the bubble content in the microbubble water flowing out of the outlet, the microbubble water generator 1 of this embodiment also includes a distribution valve 18. The inlet of the distribution valve 18 is connected to the inlet of the third pipe 15, and it has two outlets, respectively connected to the bypass pipe 17 and the third liquid channel 151. Through the distribution valve 18, the ratio of water entering the bypass pipe 17 and the third liquid channel 151 can be adjusted, thereby changing the bubble content of the microbubble water formed in the throat of the throat. Furthermore, by mixing the water in the bypass pipe 17 with the microbubble water formed in the second liquid channel 141, the bubble content of the final microbubble water can be adjusted to meet the requirements of different users. In addition, by setting the distribution valve 18, this embodiment can adjust the pressure of the water entering the throat, thereby avoiding excessive water pressure that prevents air from effectively dissolving, thus further increasing the probability of microbubble water generation. The aforementioned distribution valve 18 is a common structure in the prior art, and its structure and principle will not be discussed here.

[0057] In this embodiment, the proportion of water entering the bypass pipe 17 and the third liquid channel 151 is adjusted by the distribution valve 18. Specifically, when the flow rate of water entering the bypass pipe 17 is increased, the flow rate entering the third liquid channel 151 decreases, resulting in less bubble content in the microbubble water. Conversely, when the flow rate of water entering the third liquid channel 151 is decreased, the flow rate of water entering the third liquid channel 151 increases, resulting in more bubble content in the microbubble water. This satisfies the user's different requirements for generating microbubble water. Since the diameter of the bypass pipe 17 is larger than the maximum diameter of the throat pipe, adjusting the flow rate of water entering the bypass pipe 17 will change the flow rate of water in the throat pipe, but the overall output flow rate of the microbubble water generator depends on the adjustment of the flow rate of water in the bypass pipe 17.

[0058] In another preferred embodiment, the microbubble water generator 1 described above can also be as follows: Figure 8 The structure shown illustrates that the microbubble water generator 1 includes a throat and an air inlet pipe 12 connected to the throat of the throat. A plate (which is the gas cutter 11 of this invention) is installed inside the air inlet pipe 12. The plate has multiple micro-gap structures, allowing air to enter the throat and mix with the hot water flowing out of the heat exchanger 2 to form microbubble water. By installing a plate with multiple micro-gap structures inside the air inlet pipe 12, the air can be sheared into multiple streams of higher-pressure fine air through these gaps. Simultaneously, the flow rate of the water inside the throat increases while the pressure decreases. This, combined with the higher-pressure fine air, allows for greater and easier integration of air into the water, resulting in microbubble water containing up to 10 bubbles per milliliter. 6 The microbubble water generator 1 of this invention produces better microbubble water and can continuously generate microbubble water. Moreover, the microbubble water generator 1 of this invention can produce microbubble water with a bubble diameter of 47 micrometers at 0.3 MPa, which is smaller than the bubble particle size produced by bubble generators in the prior art, and achieves better cleaning effect.

[0059] Specifically, such as Figure 8 and Figure 9 As shown, the microbubble water generator 1 includes a plate, an air inlet pipe 12, a first pipe 13, and a second pipe 14, wherein:

[0060] One end of the second pipe 14 is sealed inside the first pipe 13, forming the aforementioned throat between them. An air inlet pipe 12 has an air inlet channel 121 connected to the throat of the throat. Exemplarily, a first liquid channel 131 can be provided inside the first pipe 13, one end of which is connected to the outlet of the heat exchanger 2, allowing hot water in the heat exchanger 2 to flow into the first liquid channel 131. The end of the first liquid channel 131 near the second pipe 14 includes a first diameter-reducing section 1311, with the diameter of the first diameter-reducing section 1311 gradually decreasing along the direction pointing towards the second pipe 14. A second liquid channel 141 is provided in the second pipe 14, one end of which is connected to the first liquid channel 131. The second liquid channel 141, near the end of the first liquid channel 131, includes a second variable-diameter section 1411 and a constant-diameter section 1412. The constant-diameter section 1412 connects the second variable-diameter section 1411 and the first variable-diameter section 1311 (i.e., the constant-diameter section 1412 is the throat of the throat tube). Along the direction pointing towards the first pipe 13, the diameter of the second variable-diameter section 141 gradually decreases. With the above structure, the first liquid channel 131 and the second liquid channel 141 together form the throat tube structure. When hot water flows into the throat tube in the heat exchanger 2, the throat tube can generate an adsorption force to draw air into the micro-gap of the plate, and the air is sheared into finer and higher-pressure air by the micro-gap. Subsequently, the fine air is drawn to the throat and mixes with water to form microbubble water.

[0061] In this embodiment, a threaded connection hole 133 is provided in the middle of the first pipe 13. Figure 10 and Figure 11 As shown), a connection hole 144 is provided on the second pipe 14. Figure 9 and Figure 12 As shown), the connecting hole 144 connects the equal diameter section 1412 and the threaded connecting hole 133. One end of the air intake pipe 12 is threaded to the threaded connecting hole 133 so that the air intake channel 121 is connected to the connecting hole 144 to form the aforementioned air intake channel 121, thereby allowing air to enter the throat of the throat pipe through the air intake channel 121 and mix with water.

[0062] Preferably, refer to Figures 9-12The first liquid channel 131 within the first pipe 13, without the first diameter reducing section 1311, has a stepped structure at one end. Correspondingly, the second pipe 14, near the first pipe 13, also has a stepped structure at one end. This facilitates the positioning of the portion of the second pipe 14 within the first pipe 13, ensuring that the connecting hole 144 on the second pipe 14 aligns with the threaded connecting hole 133 on the first pipe 13, allowing air to smoothly enter the throat of the throat. Furthermore, it improves the sealing performance of the connection between the first pipe 13 and the second pipe 14, preventing gas leakage at the connection point. More preferably, the outer wall of the portion of the second pipe 14 within the first pipe 13 has several sealing grooves 143, within which sealing rings can be placed to further enhance the sealing performance between the first pipe 13 and the second pipe 14.

[0063] In this embodiment, one end of the second pipe 14 is fixedly connected to the first pipe 13 by bolts. Specifically, flange structures can be provided on the first pipe 13 and the second pipe 14, and then the first pipe 13 and the second pipe 14 are fixed by bolts and flange structures. The first pipe 13 and the second pipe 14 can also be fixed by other methods such as threaded connection, as long as the connecting hole 144 can be aligned with the threaded connecting hole 133.

[0064] The aforementioned plate is disposed within the threaded connection hole 133 and can be fixed by abutting one end of the air intake pipe 12. The plate has multiple micro-gap sections. Air enters through the air intake channel 121 of the air intake pipe 12, passes through the plate, flows into the threaded connection hole 133 via the micro-gap sections, and finally flows into the throat of the throat pipe through the connection hole 144. Because there are multiple micro-gap sections, the air can be sheared and divided into multiple streams of higher-pressure fine air. These fine air streams mix with water to form microbubble water.

[0065] In this embodiment, multiple plates can be configured, spaced apart. These multiple plates allow for repeated shearing and segmentation of the air, resulting in finer air entering the threaded connection hole 133 and thus enhancing the microbubble water effect. Preferably, the micro-gap of the multiple plates is staggered to improve the shearing effect on the air, causing it to be sheared into more strands, thereby increasing the number of bubbles in the microbubble water.

[0066] For example, the aforementioned plate can be made of foam-like metal, in which case the micro-gaps are formed by the pores of the foam-like metal. The aforementioned plate can also be made of porous plate or porous graphite, in which case the micro-gaps are formed by the pores on it.

[0067] In this embodiment, a one-way valve (not shown in the figure) is provided in the air intake channel 121. It is preferably provided in the air intake channel 121 of the air intake pipe 12, and the one-way valve is provided upstream of the plate to prevent water from flowing into the air intake channel 121 through the threaded connection hole 133.

[0068] For reference Figure 9 The microbubble water generator 1 in this embodiment further includes a third pipe 15, which is sealed to one end of the second pipe 14, and the third pipe 15 has a fourth liquid channel 152 that communicates with the second liquid channel 141. An outlet communicating with the fourth liquid channel 152 is provided on the third pipe 15, and this outlet is connected to the water outlet connector 3, allowing the generated microbubble water to flow into the water outlet connector 3 through the outlet. In this embodiment, the third pipe 15 and the second pipe 14 are sealed together by a threaded connection and a sealing ring.

[0069] In this embodiment, an air pump 10 can also be connected to one end of the air intake pipe 12. The air pump 10 pumps air into the air intake pipe 12, and with the automatic adsorption of the throat, the air can be more easily dissolved in the water, thus making the formed microbubble water effect better. In addition, when the water pressure is too high, the air pump 10 can be used to boost the air to the throat, making the air more easily dissolved in the water.

[0070] Preferably, the microbubble water generator 1 of this embodiment further includes a bypass pipe 17, which connects to both sides of the throat of the throat tube. By providing the bypass pipe 17, water can flow through the throat of the throat tube and mix with fine air to form microbubble water, while another part mixes with the formed microbubble water, thereby changing the bubble content in the microbubble water flowing out of the outlet. In this embodiment, one end of the bypass pipe 17 is connected to the inlet of the first pipe 13, and the other end is connected to the second pipe 14 (… Figure 12 As shown, the second pipe 14 has a connecting hole 142 that connects to the second liquid channel 141, and the bypass pipe 17 is sealed and connected to the connecting hole 142.

[0071] To better achieve stepless adjustment of the bubble content in the microbubble water flowing out of the outlet, the microbubble water generator 1 of this embodiment also includes a distribution valve 18. The inlet of the distribution valve 18 is connected to the inlet of the first pipe 13, and it has two outlets, respectively connected to the bypass pipe 17 and the first liquid channel 131. Through the distribution valve 18, the ratio of water entering the bypass pipe 17 and the first liquid channel 131 can be adjusted, thereby changing the bubble content of the microbubble water formed in the throat of the throat. Furthermore, by mixing the water in the bypass pipe 17 with the microbubble water formed in the second liquid channel 141, the bubble content of the final microbubble water can be adjusted to meet the requirements of different users. In addition, by setting the distribution valve 18, this embodiment can adjust the pressure of the water entering the throat, thereby avoiding excessive water pressure that prevents air from effectively dissolving, thus further increasing the probability of microbubble water generation. The above-mentioned distribution valve 18 is a common structure in the prior art, and its structure and principle will not be discussed here.

[0072] In another preferred embodiment, the microbubble water generator 1 described above can also be as follows: Figure 13 and Figure 14 The structure shown, specifically, is as follows: Figure 13 and Figure 14 As shown, the microbubble water generator 1 includes a throat, and sintered filter elements (which are the gas cutter 11 of this invention) are stacked along the axial direction of the throat. Air can enter the throat through the micro-pores of the sintered filter elements and mix with the hot water flowing out of the heat exchanger 2 to form microbubble water. This invention, by setting a sintered filter element at the throat, allows air to enter the throat and mix with water due to the micro-pore structure of the sintered filter element itself. Because the micro-pores of the sintered filter element are small, they can shear the air, thus turning it into finer air with higher pressure. Simultaneously, the throat structure increases the water flow rate and lowers the pressure. Combined with the higher-pressure finer air, this allows more air to easily and readily integrate into the water, resulting in microbubble water containing up to 10 bubbles per milliliter. 6 The microbubble water generator 1 of this invention produces better microbubble water and can continuously generate microbubble water. Moreover, the microbubble water generator 1 of this invention can produce microbubble water with a bubble diameter of 47 micrometers at 0.3 MPa, which is smaller than the bubble particle size produced by bubble generators in the prior art, and achieves better cleaning effect.

[0073] like Figure 13 and Figure 14 As shown, the microbubble water generator 1 includes a sintered filter element, an air inlet pipe 12, a first pipe 13, and a second pipe 14, wherein:

[0074] One end of the second pipe 14 is sealed inside the first pipe 13, and the two together form a throat with the sintered filter element, which is located at the throat of the throat. Exemplarily, a first liquid channel 131 is provided inside the first pipe 13, one end of which is used for the entry of hot water into the heat exchanger 2. The end of the first liquid channel 131 near the second pipe 14 includes a first diameter-reducing section 1311, and the diameter of the first diameter-reducing section 1311 gradually decreases along the direction pointing towards the second pipe 14. A second liquid channel 141 is provided in the second pipe 14, one end of which is connected to the first liquid channel 131, and the other end is connected to the water outlet pipe 3. The second liquid channel 141 includes a second diameter-reducing section 1411 at its end near the first liquid channel 131. Along the direction pointing towards the first pipe 13, the diameter of the second diameter-reducing section 1411 gradually decreases. A sintered filter element is disposed between the first diameter-reducing section 1311 and the second diameter-reducing section 1411. This structure allows the first liquid channel 131, the sintered filter element, and the second liquid channel 141 to collectively form the aforementioned throat structure. When hot water flows into the throat in the heat exchanger 2, the throat generates an adsorption force that draws air into the micro-gap between the sintered filter elements. The air is then sheared by the micro-gap into finer, higher-pressure air, which subsequently mixes with the water to form microbubble water.

[0075] A threaded connection hole 133 is provided on the first pipe 13, which is positioned directly opposite the sintered filter element. Through this threaded connection hole 133, outside air can flow to the sintered filter element and then enter the throat through the micro-gap of the sintered filter element. In addition, the air intake pipe 12 of this embodiment can be threaded to the threaded connection hole 133. An air intake channel 121 is provided in the air intake pipe 12, which is connected to the threaded connection hole 133. Outside air can enter the air intake channel 121 and the threaded connection hole 133, and finally enter the micro-gap of the sintered filter element.

[0076] Preferably, one end of the second pipe 14 is fixedly connected to the first pipe 13 by bolts. Specifically, flange structures can be provided on the first pipe 13 and the second pipe 14, and then the first pipe 13 and the second pipe 14 are fixed by bolts and flange structures. The first pipe 13 and the second pipe 14 can also be fixed by other methods such as threaded connection.

[0077] In this embodiment, a rubber gasket 19 is provided between the sintered filter element and the first pipe 13. This rubber gasket 19 prevents water flow from impacting the sintered filter element and causing damage. The water pressure is buffered by the rubber gasket 19 and does not directly act on the end face of the sintered filter element, thus effectively protecting it. Furthermore, the rubber gasket 19 also prevents the sintered filter element from being damaged by impact or pressure during the assembly of the microbubble water generator 1 in this embodiment.

[0078] For reference Figure 14 The microbubble water generator 1 in this embodiment also includes a third pipe 15, which is sealed to the end of the first pipe 13 away from the sintered filter element. The third pipe 15 has a third liquid channel 151 that connects to the first liquid channel 131, and this third liquid channel 151 connects to the outlet of the heat exchanger 2. An inlet is provided on the third pipe 15 that connects to the third liquid channel 151, allowing hot water in the heat exchanger 2 to enter the third liquid channel 151 through the inlet, and then enter the first liquid channel 131. In this embodiment, one end of the third pipe 15 is placed inside the first pipe 13, and the two are fixedly connected by a flange and bolts, with a sealing ring provided between them for sealing.

[0079] Preferably, a detection device 16 is provided at one end of the third pipe 15. This detection device 16 is used to detect flow rate, pressure, and / or temperature. For example, the detection device 16 can be a temperature sensor to detect the temperature of the water flowing into the third liquid channel 151, a pressure sensor to detect the pressure of the water flowing into the third liquid channel 151, or a flow sensor to detect the flow rate of the water flowing into the third liquid channel 151. Devices that simultaneously detect two or more of temperature, pressure, and flow rate can also be used. By detecting flow rate, pressure, and / or temperature, a controller can be used to control the water flow rate, pressure, and temperature to meet different needs.

[0080] In this embodiment, an air pump 10 can also be connected to one end of the air intake pipe 12. The air pump 10 pumps air into the air intake pipe 12, and with the automatic adsorption of the throat, the air can be more easily dissolved in the water, thus making the formed microbubble water effect better. In addition, when the water pressure is too high, the air pump 10 can be used to boost the air to the throat, making the air more easily dissolved in the water.

[0081] Preferably, the microbubble water generator 1 of this embodiment further includes a bypass pipe 17, which connects to both sides of the throat of the throat tube. By providing the bypass pipe 17, water can flow through the throat of the throat tube and mix with fine air to form microbubble water, while another part mixes with the formed microbubble water, thereby changing the bubble content in the microbubble water flowing out of the outlet. In this embodiment, one end of the bypass pipe 17 is connected to the inlet of the third pipe 15, and the other end is connected to the second pipe 14 (… Figure 14 As shown, the second pipe 14 has a connecting hole 142 that connects to the second liquid channel 141, and the bypass pipe 17 is sealed and connected to the connecting hole 142.

[0082] To better achieve stepless adjustment of the bubble content in the microbubble water flowing out of the outlet, the microbubble water generator 1 of this embodiment also includes a distribution valve 18. The inlet of the distribution valve 18 is connected to the inlet of the third pipe 15, and it has two outlets, respectively connected to the bypass pipe 17 and the third liquid channel 151. Through the distribution valve 18, the ratio of water entering the bypass pipe 17 and the third liquid channel 151 can be adjusted, thereby changing the bubble content of the microbubble water formed in the throat of the throat. Furthermore, by mixing the water in the bypass pipe 17 with the microbubble water formed in the second liquid channel 141, the bubble content of the final microbubble water can be adjusted to meet the requirements of different users. In addition, by setting the distribution valve 18, this embodiment can adjust the pressure of the water entering the throat, thereby avoiding excessive water pressure that prevents air from effectively dissolving, thus further increasing the probability of microbubble water generation. The aforementioned distribution valve 18 is a common structure in the prior art, and its structure and principle will not be discussed here.

[0083] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A gas-fired water heater capable of generating microbubble water, characterized in that, The device includes a housing, a microbubble water generator (1) and a heat exchanger (2) disposed within the housing. The microbubble water generator (1) is connected to the outlet pipe of the heat exchanger (2), and the outlet of the microbubble water generator (1) is connected to an outlet pipe (3). The microbubble water generator (1) includes a throat and a gas cutter (11). The gas cutter (11) is disposed at the throat of the throat. Outside air can enter the throat through the micro-gap of the gas cutter (11) and mix with water to form microbubble water. The microbubble water flows out through the outlet pipe (3). The microbubble water generator (1) includes a first pipe (13) and a second pipe (14), and the throat is formed between the first pipe (13) and the second pipe (14); The gas cutting component (11) is a gasket, which is stacked along the axial direction of the throat tube at the throat of the throat tube, and the micro gap is formed between the gaskets; a plurality of shearing grooves (111) are formed on the surface of the gasket along both sides of the axial direction. The gasket includes a first sheet (112) and a second sheet (113) arranged in a stepped manner. The first sheet (112) and the second sheet (113) are integrally formed. The diameter of the first sheet (112) is smaller than the diameter of the second sheet (113). The shear groove (111) is provided on the surface of both the first sheet (112) and the second sheet (113). The gasket forms an annular space with the end face of the first pipe (13) adjacent to it, the end face of the second pipe (14) and two adjacent gaskets. One end of the second pipe (14) is threaded to the first pipe (13). The gasket is sandwiched between the first pipe (13) and the second pipe (14). By screwing the second pipe (14), the clamping force applied to the gasket by the second pipe (14) and the first pipe (13) can be adjusted, thereby adjusting the size of the micro-gap between the gaskets.

2. The gas water heater capable of generating microbubble water according to claim 1, characterized in that, The sidewalls of the gaskets have surface roughness, and the micro-gap is formed between the sidewalls of adjacent gaskets.

3. The gas water heater capable of generating microbubble water according to any one of claims 1-2, characterized in that, The microbubble water generator (1) includes a bypass pipe (17) which is connected to both sides of the throat of the throat tube.

4. The gas water heater capable of generating microbubble water according to claim 3, characterized in that, The microbubble water generator (1) also includes a distribution valve (18) configured to adjust the ratio of water flowing into the throat inlet and the bypass pipe (17).

5. The gas water heater capable of generating microbubble water according to claim 1, characterized in that, The microbubble water generator (1) includes an air inlet pipe (12) and an air pump (10). The air inlet pipe (12) is connected to the throat of the throat pipe, and the air pump (10) is connected to the air inlet pipe (12).

6. The gas water heater capable of generating microbubble water according to claim 5, characterized in that, A support (4) is installed inside the housing, and the throat tube and the air pump (10) are fixed on the support (4).

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