A gas water heater

Abstract

The present application belongs to the technical field of water heaters, and discloses a gas water heater, which comprises a shell, a micro-bubble water generator, a heating assembly and a bypass pipeline arranged in the shell, the micro-bubble water generator is communicated with a water outlet pipe of the heating assembly, 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 a micro gap of the gas cutting piece and mix with water to form micro-bubble water, the bypass pipeline is respectively communicated with a water inlet pipe of the heating assembly and a water outlet end of the micro-bubble water generator, and the bypass pipeline is configured to deliver cold water to the water outlet end to mix with the micro-bubble water. By arranging the micro-bubble water generator, the air can enter the throat pipe through the micro gap of the gas cutting piece and mix with the water to form the micro-bubble water, the cleaning effect is higher, and the user experience is better. By arranging the bypass pipeline, the waste heat temperature rise of the gas water heater can be prevented from being too high, and adverse conditions such as aging of the heating assembly can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water heaters, in particular to a gas water heater. BACKGROUND

[0002] Micro-bubbles refer to micro-bubbles with a diameter of less than 50 um, which mix gas (such as air) and water sufficiently under a certain pressure to form a gas-water mixed solution, and then release pressure through expansion to cause the gas dissolved in the water to suddenly aggregate to form fine micro-bubbles and appear milky white. The micro-bubble water formed in this process has strong decontamination power. When the micro-bubbles in the water break, the pressure and heat generated can instantly remove dirt, achieving deep cleaning effect.

[0003] As a common household appliance in people's life, the gas water heater brings great convenience to people's life. However, in the process of using the existing gas water heater, the situation of turning off and then turning on again may occur. Because part of the water will stay at the heating assembly due to the closing of the water outlet valve before the water outlet valve is closed, the residual heat of the heating assembly will heat the water again, causing the temperature to rise. When the user opens the water outlet valve again, the water temperature may be too high to scald the user. In addition, with the increasing requirement of people for cleanliness, the existing gas water heater gradually cannot meet the requirements of people. At this time, the application of micro-bubble water can meet the requirements of people for cleanliness. The existing gas water heater does not generally have the function of generating micro-bubble water, or only provides an idea without specific structure. Therefore, how to design a gas water heater that can combine micro-bubble water and does not have the problem of water temperature rising too high due to residual heat is a problem to be solved at present. SUMMARY

[0004] The purpose of the present application is to provide a gas water heater which can output micro-bubble water for users to use, and can prevent the residual heat temperature rise of the gas water heater from being too high, avoid the occurrence of adverse conditions such as aging of the heating assembly, and improve the user experience.

[0005] To achieve this purpose, the present application adopts the following technical scheme: a gas water heater, comprising a shell, a micro-bubble water generator, a heating assembly and a bypass pipeline arranged in the shell, the micro-bubble water generator being communicated with a water outlet pipe of the heating assembly, the micro-bubble water generator comprising a throat pipe and a gas cutting piece, the gas cutting piece being arranged at a throat position of the throat pipe, external air can enter the throat pipe through the micro gap of the gas cutting piece and mix with water to form micro-bubble water, the bypass pipeline being communicated with a water inlet pipe of the heating assembly and a water outlet end of the micro-bubble water generator respectively, the bypass pipeline being configured to deliver cold water to the water outlet end to mix with the micro-bubble water.

[0006] Preferably, the bypass pipe includes a first end connected to the water outlet, the first end extending in a direction pointing towards the interior of the microbubble water generator, so that the water flowing out of the first end and the microbubble water flowing out of the water outlet are in a convection state.

[0007] Preferably, the port at the first end is tilted towards the pipe wall at the water outlet end.

[0008] Preferably, the angle α between the axis of the port at the first end and the axis of the portion of the bypass pipe located outside the outlet end is 30°-60°.

[0009] 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.

[0010] Preferably, the sidewalls of the gaskets have a surface roughness, and the microgap is formed between the sidewalls of adjacent gaskets.

[0011] Preferably, the gasket has several shearing grooves on both sides of its axial direction.

[0012] 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.

[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 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] The beneficial effects of this invention are as follows: By incorporating a microbubble water generator with a gas cutter, air can enter the throat through the micro-gap of the gas cutter and mix with water to form microbubble water, which is then ready for user use. This results in higher cleaning efficiency and a better user experience. Furthermore, by providing a bypass pipe connecting the inlet pipe of the heating element to the outlet of the microbubble water generator, when the heating element stops heating, the water inside is heated by residual heat. When the heating element is restarted, the water heated by the residual heat is passed through the microbubble water generator to form microbubble water, the temperature of which is higher than the user-set temperature. At this time, cold water is supplied to the outlet of the microbubble water generator through the bypass pipe and mixed with the higher-temperature microbubble water. This lowers the temperature of the high-temperature microbubble water formed by the residual heat of the heating element, preventing scalding to the user and eliminating water waste. This also prevents excessive temperature rise of the gas water heater's residual heat, avoiding problems such as aging of the heating element. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the gas water heater provided by the present invention;

[0017] Figure 2 This is an assembly diagram of the gas water heater microbubble water generator and heating component provided by the present invention;

[0018] Figure 3 This is a partial schematic diagram of the bypass pipe of the gas water heater provided by the present invention;

[0019] Figure 4 This is a three-dimensional structural diagram of the first microbubble water generator provided by the present invention;

[0020] Figure 5 This is a cross-sectional view of the first microbubble water generator provided by the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the gasket for the first microbubble water generator provided by the present invention;

[0022] 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;

[0023] Figure 8 This is a three-dimensional structural diagram of the second type of microbubble water generator provided by the present invention;

[0024] Figure 9 This is a cross-sectional view of the second type of microbubble water generator provided by the present invention;

[0025] Figure 10This is a schematic diagram of the structure of the first pipe of the second type of microbubble water generator provided by the present invention;

[0026] 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;

[0027] 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;

[0028] Figure 13 This is a cross-sectional view of the third type of microbubble water generator provided by the present invention.

[0029] In the picture:

[0030] 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 changing section; 132. Annular chamber; 133. Threaded connection hole; 14. Second pipe; 141. Second liquid channel; 1411. Second diameter changing section; 1412. Equal diameter section; 142. Connecting hole; 143. Sealing groove; 144. Connecting hole; 15. Third pipe; 151. Third liquid channel; 152. Fourth liquid channel; 16. Detection device; 17. Rubber gasket; 10. Air pump; 2. Heating component; 3. Bypass pipe; 31. First end; 4. Housing. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] This invention provides a gas water heater capable of producing microbubble water for user consumption, offering superior cleaning performance and a better user experience. Figure 1 and Figure 2 As shown, the gas water heater includes a housing 4, a microbubble water generator 1, a heating element 2, and a bypass pipe 3 disposed within the housing 4. The microbubble water generator 1 is connected to the outlet pipe of the heating element 2, and the outlet end of the microbubble water generator 1 can be connected to the outlet pipe. Cold water flows into the heating element 2 and is heated by it. Then, it flows into the microbubble water generator 1 through the outlet pipe and mixes with the air flowing into the microbubble water generator 1 to form microbubble water. The water is then delivered to faucets, shower heads, etc., through the outlet pipe for user use.

[0036] One end of the bypass pipe 3 is connected to the inlet pipe of the heating component 2, and the other end is connected to the outlet of the microbubble water generator 1. Through this bypass pipe 3, some of the cold water delivered to the inlet pipe can flow directly into the outlet of the microbubble water generator 1 and mix with the microbubble water produced by the microbubble water generator 1 to reduce the temperature of the microbubble water. It should be noted that an electrically controlled valve is provided on the bypass pipe 3 to realize the opening and closing of the bypass pipe 3.

[0037] When the gas water heater of this invention is in use, after the heating element 2 stops heating, the water inside the heating element 2 will be heated by residual heat. When the heating element 2 is turned on again, the water heated by the residual heat of the heating element 2 will form microbubble water through the microbubble water generator 1. The temperature of the microbubble water formed is higher than the temperature set by the user. At this time, cold water is supplied to the outlet of the microbubble water generator 1 through the bypass pipe 3 and mixed with the higher temperature microbubble water. This reduces the temperature of the high temperature microbubble water formed by the residual heat of the heating element 2. The microbubble water mixed with cold water will not scald the user and will not waste water resources. This also prevents the residual heat of the gas water heater from rising too high and avoids aging of the heating element 2 and other adverse conditions.

[0038] In this embodiment, see Figure 2 and Figure 3 The bypass pipe 3 includes a first end 31 that connects to the outlet end of the microbubble water generator 1. The first end 31 extends in the direction of pointing into the interior of the microbubble water generator 1 so that the water flowing out of the first end 31 and the microbubble water flowing out of the outlet end are in a convective state, which enables the cold water to be fully mixed with the high-temperature microbubble water formed after being heated by residual heat, thereby better cooling the high-temperature microbubble water.

[0039] Preferably, the port of the first end 31 is inclined towards the pipe wall of the outlet end. This structure allows the cold water in the bypass pipe 3 to flow towards the pipe wall of the outlet end, and to flow in a reverse spiral along the inner wall of the outlet end. This allows for a longer contact time with the high-temperature microbubble water flowing in the outlet end, resulting in a better cooling effect on the microbubble water. For example, as... Figure 3 As shown, the angle α between the axis of the port of the first end 31 and the axis of the part of the bypass pipe 3 located outside the outlet end is 30°-60°. This angle setting allows the cold water in the bypass pipe 3 to flow in a reverse spiral along the inner wall of the outlet end.

[0040] 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 water outlet of the heating component 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.

[0041] In one embodiment, exemplarily, such as Figure 4 and Figure 5As shown, in this embodiment of the microbubble water generator 1, the gas cutting element 11 consists of multiple gaskets, which are stacked along the axial direction of the throat tube at the throat. By setting 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 heating element 2. 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.

[0042] 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:

[0043] 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 hot water from the outlet pipe of the heating assembly 2 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 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 gradually decrease near the gasket end to form a throat. When hot water from the outlet pipe of the heating assembly 2 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] For reference Figure 6 The 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.

[0054] 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.

[0055] For reference Figure 5The 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, and this inlet is connected to the outlet pipe of the heating component 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.

[0056] 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.

[0057] In this embodiment, as Figure 7 As shown, the second pipe 14 is also provided with a connecting hole 142 that connects to the second liquid channel 141. The first end 31 of the bypass pipe 3 is sealed and extended into the connecting hole 142, and the port of the first end 31 of the bypass pipe 3 is inclined and points towards the pipe wall of the second liquid channel 141. Specifically, the pointing direction of the first end 31 is the direction pointing towards the first pipe 13.

[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 from the heating element 2 to form microbubble water. By placing a plate inside the air inlet pipe 12 with multiple micro-gap structures, air can be sheared into multiple streams of higher-pressure fine air through the micro-gap structures. 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 more air to be incorporated into the water more easily, resulting in microbubble water containing up to 10 bubbles per milliliter. 6The 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 intake passage 121 is provided inside the air intake pipe 12, which connects to the throat of the throat. Exemplarily, a first liquid passage 131 can be provided inside the first pipe 13, one end of which is connected to the outlet pipe of the heating assembly 2, allowing hot water from the heating assembly 2 to flow into the first liquid passage 131. The end of the first liquid passage 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 passage 141 is provided in the second pipe 14, one end of which connects to the first liquid passage 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 can together form the throat tube structure. When hot water in the heating assembly 2 flows into the throat tube, 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 9-12 The 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 a water outlet pipe, allowing the generated microbubble water to flow into the water outlet pipe for user use. 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, such as Figure 12 As shown, the second pipe 14 in this embodiment has a connecting hole 142 that connects to the second liquid channel 141. The first end 31 of the bypass pipe 3 is sealed and extends into the connecting hole 142, and the port of the first end 31 of the bypass pipe 3 is inclined and points towards the pipe wall of the second liquid channel 141. Specifically, the pointing direction of the first end 31 is the direction pointing towards the first pipe 13.

[0071] In another preferred embodiment, the microbubble water generator 1 described above can also be as follows: Figure 13 The structure shown, specifically, is as follows: Figure 13 As shown, the microbubble water generator 1 includes a throat tube, and sintered filter elements (which are the gas cutter 11 of this invention) are stacked along the axial direction of the throat tube. Air can enter the throat tube through the micro-pores of the sintered filter element and mix with the hot water flowing out of the heating component 2 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 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 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.

[0072] like Figure 13 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:

[0073] 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, one end of which is used for the entry of hot water into the heating assembly 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 connector 3. The second liquid channel 141 includes a second variable diameter 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 variable diameter section 1411 gradually decreases. A sintered filter element is disposed between the first variable diameter section 1311 and the second variable diameter 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 from the heating assembly 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.

[0074] 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.

[0075] 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 the flange structures. The first pipe 13 and the second pipe 14 can also be fixed by other methods such as threaded connection.

[0076] In this embodiment, a rubber gasket 17 is provided between the sintered filter element and the first pipe 13. This rubber gasket 17 prevents water flow from impacting the sintered filter element and causing damage. The water pressure is buffered by the rubber gasket 17 and does not directly act on the end face of the sintered filter element, thus effectively protecting it. Furthermore, the rubber gasket 17 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.

[0077] For reference Figure 13 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 this third liquid channel 151 is connected to the outlet pipe of the heating component 2. An inlet is provided on the third pipe 15 that connects to the third liquid channel 151. Hot water in the heating component 2 can 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.

[0078] 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.

[0079] 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.

[0080] like Figure 13 As shown, the second pipe 14 in this embodiment has a connecting hole 142 that connects to the second liquid channel 141. The first end 31 of the bypass pipe 3 is sealed and extends into the connecting hole 142, and the port of the first end 31 of the bypass pipe 3 is inclined and points towards the pipe wall of the second liquid channel 141. Specifically, the pointing direction of the first end 31 is the direction pointing towards the first pipe 13.

[0081] 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 water heater, characterized in that, The device includes a housing, a microbubble water generator (1), a heating component (2), and a bypass pipe (3) disposed within the housing. The microbubble water generator (1) is connected to the outlet pipe of the heating component (2). 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 bypass pipe (3) is connected to the inlet pipe of the heating component (2) and the outlet of the microbubble water generator (1). The bypass pipe (3) is configured to deliver cold water to the outlet to mix with the microbubble water. The microbubble water generator (1) includes a first pipe (13) and a second pipe (14) sealed at one end inside the first pipe (13). A first liquid channel (131) is provided in the first pipe (13), and a second liquid channel (141) is provided in the second pipe (14). One end of the first liquid channel (131) is used to allow hot water from the outlet pipe of the heating component (2) to flow in. One end of the second liquid channel (141) is connected to the first liquid channel (131), and the other end is connected to the bypass pipe (3). The first pipe (13) is provided with an air inlet and an annular chamber (132) connected to the air inlet. The gas cutting component (11) consists of multiple gaskets. The multiple gaskets are stacked along the axial direction of the throat tube at the throat of the throat tube. Along the direction pointing to the gaskets, the diameter of the first liquid channel (131) and the second liquid channel (141) near the gaskets is the same. The size gradually decreases to form the throat; the gasket includes a first piece (112) and a second piece (113) distributed in a stepped manner. The first piece (112) and the second piece (113) are integrally formed, and the diameter of the first piece (112) is smaller than the diameter of the second piece (113). The surfaces of the first piece (112) and the second piece (113) are provided with shearing grooves (111). The gasket and the end face of the adjacent first pipe (13), the end face of the second pipe (14), and the two adjacent gaskets can form an annular space. When air flows into the annular chamber (132), the air in the annular chamber (132) will be evenly distributed in the annular space, and then flow 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), and be sheared to form fine air. One end of the second pipe (14) is threaded to the first pipe (13). 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 according to claim 1, characterized in that, The bypass pipe (3) includes a first end (31) connected to the water outlet end. The first end (31) extends in the direction pointing into the microbubble water generator (1) so that the water flowing out of the first end (31) and the microbubble water flowing out of the water outlet end are in a convection state.

3. The gas water heater according to claim 2, characterized in that, The port of the first end (31) is tilted towards the pipe wall of the outlet end.

4. The gas water heater according to claim 3, characterized in that, The angle α between the axis of the port of the first end (31) and the axis of the part of the bypass pipe (3) located outside the outlet end is 30°-60°.

5. The gas water heater according to any one of claims 1-4, 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).

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