Micro-bubble water electric water heater

Abstract

The present application belongs to the technical field of electric water heaters, and discloses a micro-bubble water electric water heater, which comprises a shell, an inner container arranged in the shell, a water outlet pipe connected with the inner container, and a micro-bubble water generator connected with the outlet of the water outlet pipe. The micro-bubble water generator comprises a throat pipe, a gas cutting piece, an air inlet pipeline and a detection device. The gas cutting piece is arranged at the throat position of the throat pipe, and the air inlet pipeline is connected with the throat. External air can enter through the air inlet pipeline, cut through the micro gap of the gas cutting piece, and then enter the throat pipe to mix with water to form micro-bubble water. The detection device is arranged in the air inlet pipeline and used for detecting the flow, pressure and / or temperature of water flowing through the throat. The present application can produce micro-bubble water for users to use. The generated micro-bubble water has higher bubble content and stronger cleaning performance, and the user experience is improved.

Description

Technical Field

[0001] This invention relates to the field of electric water heater technology, and more particularly to a microbubble water electric water heater. Background Technology

[0002] Domestic water heater products mainly include electric water heaters, gas water heaters, solar water heaters, and air source water heaters. Among them, the water heater sector is dominated by traditional electric water heaters and gas water heaters.

[0003] Microbubbles are tiny bubbles with a diameter of less than 50 μm. They are produced by mixing gas (such as air) with water under pressure to form a gas-water solution. The solution is then expanded to release pressure, causing the dissolved gas to suddenly aggregate and form 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. Existing technologies combine microbubble generators with electric water heaters; however, the microbubble water produced by these heaters has a low bubble content, resulting in poor cleaning performance and a poor user experience. Summary of the Invention

[0004] The purpose of this invention is to provide a microbubble water heater that can produce microbubble water for users, which has stronger cleaning performance and improves user experience.

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

[0006] A microbubble water heater includes a shell, an inner tank disposed within the shell, a water outlet pipe connected to the inner tank, and a microbubble water generator connected to the outlet of the water outlet pipe. The microbubble water generator includes a throat, a gas cutter, an air inlet pipe, and a detection device. The gas cutter is disposed at the throat of the throat, and the air inlet pipe is connected to the throat. Outside air can enter through the air inlet pipe, and after being cut by the micro-gap of the gas cutter, it enters the throat and mixes with water to form microbubble water. The detection device is placed inside the air inlet pipe and is used to detect the flow rate, pressure, and / or temperature of the water flowing through the throat.

[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, an insertion channel is formed between two adjacent gaskets, and the detection end of the detection device extends into the throat through the insertion channel.

[0010] Preferably, the gas cutting element is a plate disposed inside the air intake pipe, and the plate has a plurality of the micro-gaps.

[0011] Preferably, the intake pipe is provided with a one-way valve, which is located upstream of the plate.

[0012] Preferably, the plate has a first through hole, and the detection end of the detection device extends into the throat through the first through hole.

[0013] 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.

[0014] Preferably, the sintered filter element has a second through hole, and the detection end of the detection device extends into the throat through the second through hole.

[0015] Preferably, the microbubble water heater further includes a control board disposed within the housing, the control board being connected to the detection device.

[0016] The beneficial effects of this invention are as follows: By connecting a microbubble water generator to the outlet of the water pipe, and incorporating a gas-cutting element in the microbubble water generator, 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 be used for bathing. Furthermore, the generated microbubble water has a higher bubble content and stronger cleaning performance, greatly improving the user experience. In addition, by incorporating a detection device, the water flow rate, pressure, and / or temperature can be monitored in real time, allowing the electric water heater to more accurately adjust water parameters. Attached Figure Description

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

[0018] Figure 2 This is a cross-sectional view of the first microbubble water generator provided by the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the gasket for the first microbubble water generator provided by the present invention;

[0020] Figure 4 This is a cross-sectional view of the second type of microbubble water generator provided by the present invention;

[0021] Figure 5 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;

[0022] Figure 6 This is a cross-sectional view of the first pipe of the second type of 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 second type of microbubble water generator provided by the present invention;

[0024] Figure 8 This is a cross-sectional view of the third type of microbubble water generator provided by the present invention.

[0025] In the picture:

[0026] 1. Microbubble water generator; 11. Gas cutting component; 111. Shear groove; 112. First plate; 113. Second plate; 114. Half hole; 12. Air inlet pipe; 121. Air inlet channel; 13. First pipe; 131. First liquid channel; 1311. First diameter changing section; 132. Annular chamber; 133. Threaded connection hole; 14. Second pipe; 141. Second liquid channel; 1411. Second diameter changing section; 1412. Constant diameter section; 142. Gas connecting hole; 143. Sealing groove; 15. Third pipe; 151. Third liquid channel; 152. Fourth liquid channel; 16. Rubber gasket; 10. Detection device. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] This invention provides a microbubble water heater that can generate microbubble water, which can then be used by users for bathing. It also has stronger cleaning performance and greatly improves the user experience.

[0032] like Figure 1 As shown, the above-mentioned microbubble water heater includes a shell, an inner tank disposed inside the shell, a water outlet pipe connected to the inner tank, and a microbubble water generator connected to the outlet of the water outlet pipe. Water passes through the microbubble water generator 1 and mixes with air to form microbubble water, which is then supplied to the user.

[0033] In this embodiment, the microbubble water generator 1 can be made of an insulating and heat-resistant material, or the outer shell of the microbubble water generator 1 can be made of an insulating material, thereby preventing the water from becoming electrified and improving safety performance.

[0034] In this embodiment, the microbubble water generator 1 includes a throat, a gas cutter 11, an air inlet pipe 12, and a detection device 10. The gas cutter 11 is located at the throat of the throat, and the air inlet pipe 12 is connected to the throat. Outside air can enter through the air inlet pipe 12, and after being cut by the micro-gap of the gas cutter 11, it enters the throat and mixes with water to form microbubble water. The detection device 10 is located inside the air inlet pipe 12 and is used to detect the flow rate, pressure, and / or temperature of the water flowing into the throat. For example, the detection device 10 can be a temperature sensor to detect the temperature of the water flowing into the throat, a pressure sensor to detect the pressure of the water flowing into the throat, or a flow sensor to detect the flow rate of the water flowing into the throat. Devices that simultaneously detect two or more of the temperature, pressure, and flow rate can also be used. Through this detection device 10, the flow rate, pressure, and / or temperature of the water can be detected in real time, enabling the microbubble water heater to more accurately adjust the water parameters.

[0035] For example, such as Figure 2 As shown, in one 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 providing gaskets at the throat, air enters the throat tube through the micro-gap between the gaskets and mixes with water. Due to the small size of the micro-gap between the gaskets, the air can be sheared, thereby turning the air into finer air with higher pressure. Simultaneously, in conjunction with the throat tube structure, the water flow rate increases and the pressure decreases. This, combined with the higher-pressure finer air, allows more air to easily integrate 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.

[0036] like Figure 2 As shown, the microbubble water generator 1 includes a gasket, an air inlet pipe 12, a first pipe 13, a second pipe 14, and a detection device 10, wherein:

[0037] One end of the second pipe 14 is sealed inside the first pipe 13, forming the aforementioned 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, allowing hot water from the outlet pipe to flow into it. A second liquid channel 141 is formed inside the second pipe 14, with one end connected to the first liquid channel 131 and the other end connected to the inside of the inlet pipe 2. Along the direction pointing towards the gasket, the diameters of both the first liquid channel 131 and the second liquid channel 141 gradually decrease near the gasket, forming a throat. When hot water from the outlet pipe flows into the throat, 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 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.

[0038] 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.

[0039] 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 formed inside 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. Outside air enters the air intake channel 121 through the suction generated by the throat tube, and then enters the annular chamber 132, where it is distributed in a ring. Subsequently, it enters the micro-gap between the gaskets evenly along the circumference of the gaskets, making the generation of microbubble water more uniform and the effect better. In this embodiment, it should be noted that one end of the air intake pipe 12 extends out of the side wall of the water inlet pipe 2 in a sealed manner so that outside air can enter the air intake channel 121 of the air intake pipe 12.

[0040] 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.

[0041] 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 faster.

[0042] 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.

[0043] In this embodiment, it can be referred to Figure 3 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.

[0044] 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.

[0045] 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.

[0046] In this embodiment, the plurality of shear grooves 111 can be arranged in parallel or crosswise. Figure 3 (as shown), to achieve shearing of the air inside the annular chamber 132.

[0047] For reference Figure 3The 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.

[0048] In this embodiment, the gasket has a groove (not shown in the figure) 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. That is, the groove 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 shear groove 111 can also be formed on the sidewall of the groove in this embodiment.

[0049] In this embodiment, it should be noted that the detection device 10 extends into the air intake channel 121, and the detection end of the detection device 10 extends into the gap between the two gaskets and is placed at the throat of the throat tube, thereby enabling real-time detection of water flow rate, pressure, and / or temperature. Optionally, as... Figure 3 As shown, in this embodiment, an insertion channel is formed on the contact surfaces of the two gaskets. Specifically, a semi-hole 114 can be radially formed on one of the gaskets. Figure 3 As shown), another half-hole is formed on another gasket, and the two half-holes merge to form the aforementioned insertion channel, which connects to the hole in the middle of the gasket. The detection end of the aforementioned detection device 10 extends into the throat through this insertion channel.

[0050] For reference Figure 2The 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 that communicates with the first liquid channel 131. An inlet is provided on the third pipe 15 that communicates with the third liquid channel 151. This inlet is connected to a water outlet pipe, and hot water in the water outlet pipe 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.

[0051] In another preferred embodiment, the microbubble water generator 1 described above can also be as follows: Figure 4 The structure shown indicates 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 the present invention) is installed inside the air inlet pipe 12. The plate has multiple micro gaps, through which air can enter the throat and mix with water to form microbubble water. A detection device 10 is disposed inside the air inlet pipe 12 and is used to detect the flow rate, pressure and / or temperature of the water flowing into the throat of the throat.

[0052] This invention, by incorporating a plate with multiple micro-gaps within the air intake pipe 12, allows air to be sheared into multiple streams of higher-pressure fine air through these micro-gaps. Simultaneously, the water flow rate within the pipe increases while the pressure decreases. This combination of higher-pressure fine air and water 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.

[0053] Specifically, such as Figure 6 As shown, the microbubble water generator 1 includes a plate, an air inlet pipe 12, a first pipe 13, a second pipe 14, and a detection device 10, wherein:

[0054] One end of the second pipe 14 is sealed inside the first pipe 13, forming the aforementioned throat between them. The air inlet pipe 12 is provided with an air inlet channel 121, which is connected to the outside and the throat of the throat. Exemplarily, a first liquid channel 131 can be provided inside the first pipe 13, allowing hot water from the outlet pipe 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, 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, with one end connected to the first liquid channel 131 and the other end connected to the inside of the water inlet pipe 2. 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 this structure, the first liquid channel 131 and the second liquid channel 141 together form the aforementioned throat tube structure. When hot water flows into the throat tube from the outlet pipe, the throat tube generates an adsorption force that draws air into the micro-gap of the plate, where it is sheared into finer, higher-pressure air. This fine air is then drawn to the throat and mixes with water to form microbubble water.

[0055] In this embodiment, a threaded connection hole 133 is provided in the middle of the first pipe 13. Figure 5 and Figure 6 As shown), a gas communication hole 142 is provided on the second pipe 14. Figure 4 and Figure 7 As shown), the gas communication hole 142 connects the equal diameter section 1412 and the threaded connection hole 133. One end of the air intake pipe 12 is threaded to the threaded connection hole 133 so that the air intake channel 121 is connected to the gas communication hole 142 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.

[0056] In this embodiment, the detection end of the detection device 10 passes through the gas communication hole 142 and is placed in the equal diameter section 1412, thereby realizing the detection of water flow rate, pressure and / or temperature.

[0057] Preferably, refer to Figures 4-7The 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 gas communication hole 142 on the second pipe 14 aligns directly with the threaded connection 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.

[0058] 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 gas communication hole 142 is aligned with the threaded connection hole 133.

[0059] 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 gas communication hole 142. 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.

[0060] It should be noted that the plate in this embodiment has a first through hole in the middle, and the detection end of the detection device 10 passes through the first through hole and extends into the equal diameter section 1412.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] For reference Figure 6 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, through which the generated microbubble water can flow out. In this embodiment, the third pipe 15 and the second pipe 14 are sealed together by a threaded connection and a sealing ring.

[0065] In another preferred embodiment, the microbubble water generator 1 described above can also be as follows: Figure 8 The structure shown, specifically, is as follows: Figure 8 As shown, the microbubble water generator 1 includes a throat tube, and sintered filter elements (which are the gas cutting element 11 of this invention) are stacked along the axial direction of the throat tube. Air can enter the throat tube through the micropores of the sintered filter element and mix with water to form microbubble water. This invention, by setting a sintered filter element at the throat tube, allows air to enter the throat tube and mix with water due to the micropore structure of the sintered filter element itself. Because the micropores of the sintered filter element are small, they can shear the air, thus turning it into finer air with higher pressure. Simultaneously, the throat tube 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.

[0066] like Figure 8 As shown, the microbubble water generator 1 includes a sintered filter element, an air inlet pipe 12, a first pipe 13, a second pipe 14, and a detection device 10, wherein:

[0067] 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 disposed at the throat of the throat. Exemplarily, a first liquid channel 131 is provided inside the first pipe 13, allowing hot water from the outlet pipe 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, whose diameter gradually decreases along the direction pointing towards the second pipe 14. A second liquid channel 141 is provided in the second pipe 14, with one end connected to the first liquid channel 131 and the other end connected to the inlet pipe 2. 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, with a hole in the middle. 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 from the outlet pipe, the throat generates an adsorption force that draws air into the micro-gap between the sintered filter elements. The air is then sheared into finer, higher-pressure air by the micro-gap, subsequently mixing with water to form microbubble water.

[0068] 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 connects to the outside air and the threaded connection hole 133. Outside air can enter the threaded connection hole 133 through the air intake channel 121 and finally enter the micro-gap of the sintered filter element.

[0069] 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.

[0070] In this embodiment, a rubber gasket 16 is provided between the sintered filter element and the first pipe 13. This rubber gasket 16 prevents water flow from impacting the sintered filter element and causing damage. The water pressure is buffered by the rubber gasket 16 and does not directly act on the end face of the sintered filter element, thus effectively protecting it. Furthermore, the rubber gasket 16 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.

[0071] Optionally, the sintered filter element has a second through hole in the radial direction, and the detection end of the detection device 10 passes through the second through hole and extends into the throat of the aforementioned throat tube.

[0072] For reference Figure 8 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 sintered filter element. The third pipe 15 has a third liquid channel 151 that connects to the first liquid channel 131 and is connected to the water pump 3. An inlet is provided on the third pipe 15 that connects to the third liquid channel 151. This inlet connects to the outlet pipe, and hot water in the outlet pipe 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 fixedly connected by a flange and bolts, with a sealing ring between them for sealing.

[0073] The microbubble water heater of the present invention further includes a control board disposed inside the housing. The control board is connected to the detection device to receive information detected by the detection device and adjust the water parameters according to the received information.

[0074] 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 microbubble water heater, characterized in that, The device includes a housing, an inner liner disposed within the housing, a water outlet pipe connected to the inner liner, and a microbubble water generator (1) connected to the outlet of the water outlet pipe. The microbubble water generator (1) includes a throat, a gas cutter (11), an air inlet pipe (12), and a detection device (10). The gas cutter (11) is disposed at the throat of the throat. The air inlet pipe (12) is connected to the throat. Outside air can enter through the air inlet pipe (12) and enter the throat after being cut by the micro gap of the gas cutter (11) to mix with water and form microbubble water. The detection device (10) is placed inside the air inlet pipe (12). The detection end of the detection device (10) extends through the gas cutter (11) into the throat and is used to detect the flow rate, pressure, and / or temperature of the water flowing through the throat. 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; The microbubble water generator (1) further includes a first pipe (13) and a second pipe (14) with one end sealed inside the first pipe (13). The throat is formed between the first pipe (13) and the second pipe (14). 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 microbubble water heater 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 microbubble water heater according to claim 1, characterized in that, An insertion channel is formed between two adjacent gaskets, and the detection end of the detection device (10) extends into the throat through the insertion channel.

4. The microbubble water heater according to any one of claims 1-3, characterized in that, The microbubble water heater also includes a control board disposed inside the housing, and the control board is connected to the detection device (10).

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