A gas water heater mixing tank

Abstract

The application relates to a mixed water tank of a gas water heater and belongs to the technical field of the gas water heater. The application specifically comprises a tank body, a first-stage shunt cylinder arranged in the tank body and a second-stage shunt plate arranged in the tank body, a water containing cavity for containing hot water is arranged in the tank body, the second-stage shunt plate divides the water containing cavity into a first mixed water cavity and a second mixed water cavity, a plurality of rows of through first shunt holes are arranged on the cylinder wall of the first-stage shunt cylinder in the axial direction, and a plurality of rings of through second shunt holes are arranged on the second-stage shunt plate in the circumferential direction. The water flow at the water outlet end of the gas water heater is first shunted through the plurality of rows of first shunt holes of the first-stage shunt cylinder, and the water flow in the first mixed water cavity is second shunted through the plurality of rings of second shunt holes of the second-stage shunt plate, so that the cold and hot fluid layers are completely broken, the water flow is fully mixed, the mixing effect and the mixing efficiency of the water flow are improved, and the impact noise of the water flow is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of gas water heater technology, and in particular to a mixing tank for a gas water heater. Background Technology

[0002] Gas water heaters are widely used hot water supply devices in homes and commercial establishments. They heat water by burning natural gas or other gas and deliver hot water to the user. In practical use, to achieve constant water temperature, gas water heaters are usually equipped with a mixing tank. This tank mixes the fluctuating water output from the heater with the existing hot water, thereby reducing temperature fluctuations and improving user comfort.

[0003] In existing technologies, gas water heater mixing tanks typically employ either a vertically positioned cylindrical structure or a horizontally positioned cylindrical structure. Horizontal mixing tanks, due to their smaller footprint and ease of installation within the water heater, are widely used in built-in and wall-mounted gas water heaters. However, existing horizontal mixing tanks still have the following shortcomings in practical applications:

[0004] 1. Uneven mixing: The concentrated water flow impacts a local area of ​​the tank, forming a significant velocity gradient across the tank's cross-section. This results in uneven mixing of the fluid causing temperature fluctuations at the gas water heater's outlet with the hot water inside the tank, potentially leading to fluctuations in the outlet water temperature and affecting the user experience.

[0005] 2. High impact noise: The high-speed water flow directly impacts the inner wall of the tank or the existing hot water, producing obvious water flow impact noise and bubble bursting noise, which does not meet the increasingly higher requirements for quiet performance of current household gas water heaters.

[0006] 3. Slow temperature response: Because the water flow is concentrated in a local area, the hot water on the side of the tank away from the inlet is almost still. The convective heat transfer efficiency between the hot and cold fluids is low, resulting in a long temperature response time for the mixing tank and a significant lag when the user adjusts the water temperature.

[0007] Therefore, there is an urgent need for a gas water heater mixing tank that can improve the water mixing effect and efficiency and effectively reduce the noise of water flow impact in the mixing tank, so as to improve the constant temperature performance and user experience of gas water heaters. Summary of the Invention

[0008] The purpose of this invention is to address the shortcomings of the prior art by providing a mixing tank for a gas water heater that can improve the mixing effect and efficiency of water flow, effectively reduce the impact noise of water flow, and thus enhance the constant temperature performance and user experience of the gas water heater.

[0009] This invention proposes a mixing tank for a gas water heater, comprising a tank body, a primary diverter cylinder disposed within the tank body, and a secondary diverter plate disposed within the tank body. The tank body has a water-containing cavity for accommodating hot water, and the secondary diverter plate divides the water-containing cavity into a first mixing cavity and a second mixing cavity. The primary diverter cylinder has multiple rows of through-holes along the axial direction on its cylinder wall, which are used to evenly distribute the water entering the tank body into the first mixing cavity along the axial direction. The secondary diverter plate has multiple rings of through-holes along the circumferential direction, which are used to evenly distribute the water in the first mixing cavity into the second mixing cavity along the circumferential direction.

[0010] Furthermore, the two adjacent rows of the first diversion holes are staggered at a preset angle in the circumferential direction so that the water flowing into the main body of the tank is evenly distributed in the circumferential direction into the first mixing chamber.

[0011] Furthermore, along the direction of water flow, the diameter of the first diversion holes in the odd-numbered rows is the first diameter, and the diameter of the first diversion holes in the even-numbered rows is the second diameter, with the first diameter being larger than the second diameter.

[0012] Furthermore, the primary diversion cylinder is equipped with a spiral flow guide assembly, which is used to cause the water flowing into the main body of the tank to generate a rotating flow.

[0013] Furthermore, the spiral guide assembly includes a spiral guide member arranged along the axial direction of the primary diverter cylinder. The spiral guide member extends spirally within the primary diverter cylinder, causing the water flow in the main body of the tank to rotate under the guiding action of the spiral guide member.

[0014] Furthermore, the spiral guide assembly also includes a noise-reducing spring arranged axially along the primary diverter cylinder. The noise-reducing spring extends spirally within the primary diverter cylinder and is coaxial with the spiral guide component, in order to reduce the impact noise of the water flow entering the tank body.

[0015] Furthermore, the outer wall of the tank body is provided with a water inlet, the primary diverter is located at the water inlet and extends vertically within the tank body; the gas water heater mixing tank also includes a water inlet connector communicating with the primary diverter, the outer side of the water inlet is provided with a first groove along the circumference, the outer wall of the water inlet connector is provided with a first protrusion along the circumference, and when the water inlet connector is inserted into the water inlet, the first protrusion and the first groove are nested together.

[0016] Furthermore, each of the multiple second diversion holes is an inclined hole with a preset angle between its axis and the axis of the tank body, which is used to generate a rotating flow when the water flows through it, so as to generate multiple rotating water flows in the second mixing chamber.

[0017] Furthermore, the second diversion hole includes an inner diversion hole and an outer diversion hole. The inner diversion hole is an inclined hole with its axis having a first preset angle with the axis of the tank body. The outer diversion hole is an inclined hole with its axis having a second preset angle with the axis of the tank body. The first preset angle and the second preset angle are different.

[0018] Furthermore, the two ends of the tank body have a first port and a second port arranged coaxially, the first port being located at one end of the first mixing chamber and the second port being located at one end of the second mixing chamber; the gas water heater mixing tank also includes a first end cap and a second end cap, the first end cap being used to close the first port and the second end cap being used to close the second port, so as to form a sealed water-containing chamber inside the tank body.

[0019] Furthermore, the second end cap is provided with a water outlet, and the gas water heater mixing tank also includes a water collecting component located at the water outlet and extending to the second mixing chamber. The water collecting component has a water collecting groove on one radial side, and the water collecting groove is located on the side of the water collecting component facing the top of the tank body, so that the upper layer of water in the second mixing chamber enters the water collecting component through the water collecting groove.

[0020] Furthermore, the gas water heater mixing tank also includes a water outlet connector that communicates with the water collection component. The outer side of the water outlet installation port is provided with a second groove along the circumferential direction, and the outer wall of the water outlet connector is provided with a second protrusion along the circumferential direction. When the water outlet connector is inserted into the water outlet installation port, the second protrusion and the second groove are nested and engaged.

[0021] Furthermore, the gas water heater mixing tank also includes a mounting bracket disposed on the outer wall of the tank body. The mounting bracket consists of two L-shaped mounting brackets spaced apart and facing away from each other on the outer wall of the tank body. The two L-shaped mounting brackets are provided with mounting holes for fixing the tank body to the gas water heater.

[0022] Furthermore, the two L-shaped mounting brackets have different extension lengths in the direction away from the outer wall of the tank body, so as to adapt to the installation of gas water heaters on different mounting planes.

[0023] This invention proposes a mixing tank for a gas water heater, which has the following beneficial effects:

[0024] (1) This mixing tank performs primary diversion of the water flow from the outlet of the gas water heater through multiple rows of first diversion holes in the primary diversion cylinder, so that the water flow is evenly distributed into the first mixing chamber along the axial direction of the primary diversion cylinder. At the same time, it performs secondary diversion of the water flow in the first mixing chamber through multiple rings of second diversion holes along the secondary diversion plate, so that the water flow is evenly distributed into the second mixing chamber along the circumference of the secondary diversion plate. This completely breaks the stratification of hot and cold fluids, achieves full mixing of water flow, and improves the mixing effect and mixing efficiency of water flow. At the same time, it effectively reduces the impact noise of water flow.

[0025] (2) The mixing tank is arranged in a staggered manner at a preset angle in the circumferential direction through two adjacent rows of first diversion holes, which further evenly disperses the water flow delivered by the gas water heater into the first mixing chamber, so that it is evenly mixed with the hot water contained in the first mixing chamber, thereby effectively reducing the water flow impact noise of the mixing tank, improving the hot and cold water mixing efficiency of the mixing tank, and thus improving the constant temperature performance and user experience of the gas water heater.

[0026] (3) This mixing tank, through the alternating action of odd-numbered rows of large-diameter first diversion holes and even-numbered rows of small-diameter first diversion holes, makes the water flow repeatedly undergo the process of "expansion-contraction" in the longitudinal direction, effectively breaking the axial inertia of the water flow, forcing the water flow to be redistributed continuously in the circumferential direction, thereby making the water outlet of each row of first diversion holes more uniform in the cross-section of the first mixing chamber, further improving the mixing uniformity of hot and cold water, reducing water flow impact noise, and improving the constant temperature performance and user experience of the gas water heater;

[0027] (4) The spiral guide of this mixing tank is arranged along the axial direction of the first-stage diverter and extends in a spiral shape inside the first-stage diverter, so that the fluid entering the first-stage diverter will generate a rotating flow under the guiding action of the spiral guide. The rotating water flows out through the first diverter hole, thereby fully mixing with the hot water already in the first mixing chamber, effectively reducing the water flow impact noise of the mixing tank, improving the hot and cold water mixing efficiency of the mixing tank, and thus improving the constant temperature performance and user experience of the gas water heater.

[0028] (5) The sound-absorbing spring and the spiral guide are coaxially matched in this mixing tank, so that after the water flows into the first-stage diverter, it is buffered and silenced by the sound-absorbing spring, and at the same time, it is guided and rotated by the spiral guide. Thus, while achieving swirling mixing, the water flow impact noise of the mixing tank is further reduced, and the quiet performance of the gas water heater is improved.

[0029] (6) All the second diversion holes of this mixing tank are inclined holes with a preset angle between the axis and the axis of the main body of the tank. As a result, when the water flows through the secondary diversion plate, multiple rotating water flows are formed in the second mixing chamber. Through the mutual collision and shearing between the multiple rotating water flows, the disturbance and mixing between the hot and cold water are effectively enhanced, thereby completely breaking the stratification of hot and cold water, achieving deep mixing, and further improving the mixing uniformity and mixing efficiency of hot and cold water.

[0030] (7) The first preset included angle of the inner ring diversion hole of this mixing tank is different from the second preset included angle of the outer ring diversion hole. Therefore, when the water flows through the inner ring diversion hole and the outer ring diversion hole, different rotation speeds are generated, resulting in multiple water flows with different rotation speeds in the second mixing chamber. This intensifies the mutual collision and shearing between the water flows, further enhances the disturbance and mixing between hot and cold water, and improves the mixing uniformity and mixing efficiency of hot and cold water.

[0031] (8) The water collection tank has the water collection slot on one radial side of the water collection component and facing the top of the second mixing chamber. This allows the water collection component to collect the upper layer of water in the second mixing chamber that is at a higher temperature and is more thoroughly mixed. At the same time, it forces the fluid in the second mixing chamber to flow into the water collection component only when the liquid level is greater than the height of the water collection slot. This prevents unmixed fluid from being discharged directly, ensuring the uniformity of the outlet water temperature, and thus improving the constant temperature performance and user experience of the gas water heater. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In these drawings, similar reference numerals are used to denote similar elements.

[0033] Figure 1 This is a cross-sectional schematic diagram of a mixing tank for a gas water heater according to an embodiment of the present invention;

[0034] Figure 2 This is an exploded view of a mixing tank for a gas water heater according to an embodiment of the present invention;

[0035] Figure 3 This is an exploded view showing the connection between the first and second end caps of a gas water heater mixing tank and the main body of the tank, according to an embodiment of the present invention.

[0036] Figure 4 This is an exploded view of the installation of the water inlet and water outlet of a gas water heater mixing tank according to an embodiment of the present invention.

[0037] Figure 5 This is a cross-sectional schematic diagram of the connection between the inlet connector of the mixing tank of a gas water heater and the primary distribution cylinder according to an embodiment of the present invention.

[0038] Figure 6 This is a schematic diagram of the structure of a two-stage flow divider plate in the mixing tank of a gas water heater according to an embodiment of the present invention;

[0039] Figure 7 for Figure 1 Enlarged view of point A in the middle;

[0040] Figure 8This is a schematic diagram of the structure of a gas water heater mixing tank installed in a gas water heater according to an embodiment of the present invention.

[0041] In the diagram: 1. Tank body; 11. First mixing chamber; 12. Second mixing chamber; 13. Water inlet; 131. First groove; 14. First port; 15. Second port; 2. Primary flow divider; 21. First flow divider hole; 22. Spiral guide; 23. Silencing spring; 3. Secondary flow divider plate; 31. Outer ring flow divider hole; 32. Inner ring flow divider hole; 4. Water inlet connector; 41. First protrusion; 42. First guide chamfer; 5. First end cap; 6. Second end cap; 61. Water outlet; 611. Second groove; 7. Water collection component; 71. Water collection trough; 8. Water outlet connector; 81. Second protrusion; 82. Second guide chamfer; 9. L-shaped mounting bracket; 91. Main body; 92. Flanged edge; 921. Mounting hole; 10. Gas water heater. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Please see Figures 1 to 8 An embodiment of the present invention provides a mixing tank for a gas water heater, comprising a tank body 1, a primary diverter 2, and a secondary diverter 3. The tank body 1 is a horizontally arranged cylindrical structure with a water-containing cavity inside, which contains hot water. The primary diverter 2 and the secondary diverter 3 are both located inside the tank body 1. The secondary diverter 3 divides the water-containing cavity into a first mixing cavity 11 and a second mixing cavity 12. The first mixing cavity 11 is located near the water inlet end of the tank body 1, and the second mixing cavity 12 is located near the water outlet end of the tank body 1.

[0044] The primary diversion cylinder 2 is a hollow cylindrical structure extending vertically within the first mixing chamber 11, with an open top and a closed bottom. When the tank body 1 is positioned at the outlet of the gas water heater 10, the water flow from the outlet of the gas water heater 10 enters the primary diversion cylinder 2 through the inlet of the tank body 1 and the open end of the primary diversion cylinder 2.

[0045] The first-stage diversion cylinder 2 has multiple rows of through first diversion holes 21 arranged axially on its cylinder wall. Water entering the first-stage diversion cylinder 2 flows out through the multiple rows of first diversion holes 21 on the cylinder wall of the first-stage diversion cylinder 2, thereby evenly dispersing the water flow from the outlet of the gas water heater 10 into the first mixing chamber 11 along the axial direction of the first-stage diversion cylinder 2, thus realizing the first-stage diversion of water flow. The water flow evenly dispersed into the first mixing chamber 11 mixes with the hot water contained in the first mixing chamber 11 for the first time.

[0046] The secondary diversion plate 3 is a circular plate-shaped structure located in the middle of the tank body 1. Its outer wall is adapted to the inner wall of the water-containing cavity, thereby dividing the water-containing cavity into a first mixing cavity 11 and a second mixing cavity 12. The secondary diversion plate 3 has multiple rings of through-holes along its circumference. As the water flow in the first mixing cavity 11, after the first mixing, flows through the secondary diversion plate 3 to the second mixing cavity 12, the multiple rings of through-holes evenly distribute the water flow along the circumference of the secondary diversion plate 3 into the second mixing cavity 12, realizing the secondary diversion of the water flow. The water flow evenly distributed into the second mixing cavity 12 mixes a second time with the hot water contained in the second mixing cavity 12, and is finally output to the user end through the outlet of the tank body 1.

[0047] In this application, the water flow at the outlet of the gas water heater 10 is firstly diverted through multiple rows of first diversion holes 21 in the first diversion cylinder 2, so that the water flow is evenly distributed into the first mixing chamber 11 along the axial direction of the first diversion cylinder 2. At the same time, the water flow in the first mixing chamber 11 is secondarily diverted through multiple rings of second diversion holes along the second diversion plate 3, so that the water flow is evenly distributed into the second mixing chamber 12 along the circumference of the second diversion plate 3. This completely breaks the stratification of hot and cold fluids, realizes the full mixing of water flow, and improves the mixing effect and mixing efficiency of water flow, while effectively reducing the impact noise of water flow.

[0048] Specifically, in this embodiment, the two ends of the tank body 1 have a first port 14 and a second port 15 coaxially arranged, respectively. The first port 14 is located at one end of the first mixing chamber 11, and the second port 15 is located at one end of the second mixing chamber 12. The gas water heater mixing tank also includes a first end cap 5 and a second end cap 6, wherein the first end cap 5 is fixedly connected to the tank body 1 to close the first port 14, and the second end cap 6 is fixedly connected to the tank body 1 to close the second port 15, thereby forming a sealed cavity for the water-containing chamber.

[0049] Specifically, in this embodiment, the top of the tank body 1 is provided with a water inlet 13, and the primary diverter 2 is located at the water inlet 13. The gas water heater mixing tank also includes a water inlet connector 4, which is installed at the water inlet 13 and connected to the open end of the primary diverter 2. Thus, when the tank body 1 is located at the outlet end of the gas water heater 10, the water inlet connector 4 is connected to the outlet end of the gas water heater 10 through the water inlet pipe, so that the water flow from the outlet end of the gas water heater 10 passes through the water inlet pipe, the water inlet connector 4, and the open end of the primary diverter 2, and enters the primary diverter 2.

[0050] Furthermore, in this embodiment, the water inlet mounting port 13 is provided with a downwardly recessed first groove 131 along the circumference, and the outer wall of the water inlet connector 4 is provided with a first protrusion 41 along the circumference. When the water inlet connector 4 is inserted into the water inlet mounting port 13, the first protrusion 41 and the first groove 131 are nested together to control the installation height of the first-stage diverter 2 in the first mixing chamber 11.

[0051] Specifically, the lower end of the water inlet connector 4 is a cylindrical section, and the first protrusion 41 is provided on the outer wall of the cylindrical section; the water inlet installation port 13 is a through hole that connects the first mixing chamber 11 to the outside, and the first groove 131 is provided on the side of the through hole facing outward, so that the water inlet installation port 13 forms a stepped structure.

[0052] When connecting the water inlet connector 4 to the water inlet installation port 13, the cylindrical section at the lower end of the water inlet connector 4 is inserted into the through hole, so that the cylindrical section extends into the first mixing chamber 11 to connect to the top of the first-stage diverter 2. At the same time, the first protrusion 41 on the outer wall of the cylindrical section is nested and engaged with the first groove 131 on the outer side of the through hole, thereby realizing the connection between the water inlet connector 4 and the water inlet installation port 13 of the tank body 1, and the upper end of the water inlet connector 4 extends outside the tank body 1 to connect to the outlet of the gas water heater 10.

[0053] In this application, the nested cooperation between the first protrusion 41 and the first groove 131 not only improves the stability of the connection between the water inlet connector 4 and the water inlet installation port 13, thereby improving the stability of the first-stage diverter 2 installed in the tank body 1, but also precisely controls the installation height of the first-stage diverter 2 in the first mixing chamber 11, so as to ensure that the water outlet position of the first diverter hole 21 is in the optimal mixing area, so that the water flow output by the gas water heater 10 can be fully mixed with the hot water stored in the tank body 1.

[0054] Furthermore, in this embodiment, the bottom end of the water inlet connector 4 is provided with a first guide chamfer 42, which is used to guide the insertion of the water inlet connector 4 into the opening end of the first-stage diverter 2. Specifically, the end of the water inlet connector 4 is provided with a first guide chamfer 42 that slopes inward from the outer wall, forming a conical guide surface.

[0055] During assembly, the end of the water inlet connector 4 is inserted into the open end of the first-stage diverter 2. During this process, the first guide chamfer 42 plays a guiding and positioning role, ensuring that the two are quickly and accurately aligned and avoiding misalignment. After the water inlet connector 4 and the open end of the first-stage diverter 2 are inserted into place, a circumferential sealing weld is performed between the outer wall of the open end of the first-stage diverter 2 and the outer wall of the water inlet connector 4 to ensure a full weld and reliable connection.

[0056] In this application, by setting a first guide chamfer 42 at the end of the water inlet connector 4, the assembly difficulty is reduced and the production efficiency is improved. At the same time, the sealing between the water inlet connector 4 and the first-stage diversion cylinder 2 is ensured, effectively preventing water leakage and the resulting water flow turbulence and noise problems, thereby improving the constant temperature performance and user experience of the gas water heater 10.

[0057] Specifically, the water inlet connector 4 is made of the same or compatible metal material as the first-stage diverter 2 to ensure good sealing performance and structural connection strength between it and the opening end of the first-stage diverter 2, and to prevent fluid leakage at the connection.

[0058] Furthermore, in this embodiment, two adjacent rows of first diversion holes 21 are staggered at a preset angle in the circumferential direction, so that the water flow delivered by the gas water heater 10 to the first-stage diversion cylinder 2 is further evenly dispersed along the circumference of the first-stage diversion cylinder 2 as it flows out through multiple rows of first diversion holes 21.

[0059] In this application, by arranging two adjacent rows of first diversion holes 21 at a preset angle in the circumferential direction, the water flow delivered by the gas water heater 10 is further evenly dispersed into the first mixing chamber 11, so that it is evenly mixed with the hot water contained in the first mixing chamber 11, thereby effectively reducing the water flow impact noise of the mixing tank, improving the hot and cold water mixing efficiency of the mixing tank, and thus improving the constant temperature performance and user experience of the gas water heater 10.

[0060] Furthermore, in this embodiment, along the flow direction of the fluid, the aperture of the odd-numbered rows of first diversion holes 21 is the first aperture, and the aperture of the even-numbered rows of first diversion holes 21 is the second aperture, with the first aperture being larger than the second aperture.

[0061] Since the fluid flows from the top to the bottom of the first-stage diversion cylinder 2, if the diameter of each row of first diversion holes 21 is the same, the fluid tends to maintain a high flow velocity inertia in the longitudinal direction after passing through each row of first diversion holes 21. This causes the water to be concentrated and sprayed into a certain section of the longitudinal direction of the first mixing chamber 11, resulting in excessive mixing in that area and insufficient mixing in other areas, leading to poor circumferential mixing uniformity.

[0062] Therefore, this application sets the aperture of the first diversion hole 21 to alternate along the flow direction of the water flow, that is, the aperture of the odd-numbered rows of the first diversion holes 21 is a larger first aperture, and the aperture of the even-numbered rows of the first diversion holes 21 is a smaller second aperture, so that the aperture of the first diversion holes 21 is arranged in the order of "large aperture, small aperture, large aperture, small aperture..." along the flow direction of the water flow.

[0063] When the fluid passes through the large-diameter first diversion holes 21 in the odd-numbered rows, the outflow rate is large and the flow velocity is low, and the water flow is fully diffused in the first mixing chamber 11. When the fluid flows to the adjacent small-diameter first diversion holes 21 in the even-numbered rows, the fluid is accelerated and squeezed out due to the sudden reduction in the flow area, which breaks the low-speed laminar flow formed in the previous row and produces a disturbance effect.

[0064] This application utilizes the alternating action of odd-numbered rows of large-diameter first diversion holes 21 and even-numbered rows of small-diameter first diversion holes 21 to cause the water flow to repeatedly undergo an "expansion-contraction" process in the longitudinal direction, effectively breaking the axial inertia of the water flow and forcing the water flow to continuously redistribute in the circumferential direction. This makes the water outlet of each row of first diversion holes 21 more uniform in the cross-section of the first mixing chamber 11, further improving the mixing uniformity of hot and cold water, reducing water flow impact noise, and enhancing the constant temperature performance and user experience of the gas water heater 10.

[0065] Specifically, in actual implementation, from the top to the bottom of the first-stage diversion cylinder 2, there are sequentially arranged first diversion holes 21 in the first row, second row, third row, and fourth row. The first diversion holes 21 in the first row and the third row have larger first diameters, while the first diversion holes 21 in the second row and the fourth row have smaller second diameters.

[0066] Preferably, in this embodiment, the diameter of the first diversion hole 21 in the first row and the first diversion hole 21 in the third row is 5mm, and the diameter of the first diversion hole 21 in the second row and the first diversion hole 21 in the fourth row is 3.5mm.

[0067] Furthermore, in this embodiment, a spiral guide component is provided inside the primary diversion cylinder 2. After the water flow from the outlet of the gas water heater 10 enters the primary diversion cylinder 2, it rotates and flows to the bottom end of the primary diversion cylinder 2 under the guidance of the spiral guide component.

[0068] During this process, the rotating water flows out through the first diversion hole 21, thereby fully mixing with the hot water already in the first mixing chamber 11, effectively reducing the water flow impact noise of the mixing tank, improving the hot and cold water mixing efficiency of the mixing tank, and thus improving the constant temperature performance and user experience of the gas water heater 10.

[0069] In this embodiment, the spiral guide assembly includes a spiral guide 22, which is arranged axially along the primary flow divider 2 and extends spirally within the primary flow divider 2, so that the fluid entering the primary flow divider 2 will generate a rotating flow under the guiding action of the spiral guide 22.

[0070] Specifically, the spiral guide 22 extends spirally from the top to the bottom along the axial direction of the primary flow divider 2, that is, the spiral guide 22 spirals up or spirals down around the central axis of the primary flow divider 2, thereby forming a spiral fluid channel inside the primary flow divider 2.

[0071] When water flows from the outlet of the gas water heater 10 into the open end (i.e., the top) of the primary distribution cylinder 2, it flows along the spiral channel under the guidance of the spiral guide 22, thus generating a rotating flow within the primary distribution cylinder 2. In actual implementation, the spiral guide 22 can be any one of a spiral blade, a spiral rib, or a spiral vane.

[0072] Furthermore, in this embodiment, the helix angle of the spiral guide 22 is 15° to 45°. When the helix angle is too large, the circumferential guiding effect of the spiral guide 22 on the water flow is weak, and the water flows in a straight line with a large axial velocity in the first-stage diverter 2, with insufficient rotation, and cannot effectively achieve swirling mixing and noise reduction effects.

[0073] When the helix angle is too small, the circumferential guiding effect of the helical guide element 22 on the water flow is too strong. The water flow is subjected to a large circumferential constraint force in the first-stage diverter 2, which increases the flow resistance and makes the water flow residence time too long, affecting the water output efficiency. Preferably, the helix angle is 30°, which ensures the swirling effect while taking into account both the flow resistance and the water output efficiency.

[0074] Specifically, the outer wall of the spiral guide component 22 is attached to the inner wall of the first-stage diverter 2 and is fixedly connected to the inner wall of the first-stage diverter 2 by spot welding. The spot welding method ensures a firm connection between the spiral guide component 22 and the first-stage diverter 2, preventing it from loosening, while avoiding the impact of large-area welding on the structural strength of the cylinder. At the same time, the spot welding process is simple and has low processing costs.

[0075] Furthermore, in this embodiment, the spiral guide assembly also includes a noise-reducing spring 23 arranged along the axial direction of the primary diverter 2. The noise-reducing spring 23 extends spirally within the primary diverter 2 and is coaxially arranged with the spiral guide component 22.

[0076] The noise-reducing spring 23 is used to reduce the impact noise of the fluid entering the first-stage diversion cylinder 2. When the high-speed water flow enters the first-stage diversion cylinder 2, it impacts the noise-reducing spring 23. The noise-reducing spring 23 absorbs the impact energy of the water flow through its own elastic deformation, thereby effectively reducing the noise generated by the water flow impact.

[0077] Specifically, the noise-absorbing spring 23 extends from the closed end of the first-stage diverter 2 to the open end, and part of its outer wall is in contact with the inner wall of the spiral guide 22, and is fixedly connected to the inner wall of the spiral guide 22 by spot welding.

[0078] The silencing spring 23 and the spiral guide 22 are coaxially arranged so that after the water flows into the first-stage diverter 2, the water is buffered and silenced by the silencing spring 23, and at the same time, it is guided and rotated by the spiral guide 22. Thus, while achieving swirling mixing, the water flow impact noise of the mixing tank is further reduced, and the quiet performance of the gas water heater 10 is improved.

[0079] Furthermore, in this embodiment, the multiple second diversion holes are all inclined holes with a preset angle between their axes and the axis of the tank body 1. Thus, when the water flows through the secondary diversion plate 3, it not only flows radially to the second mixing chamber 12, but also generates a rotational component in the axial direction due to the existence of the inclination angle, thereby forming multiple rotating water flows in the second mixing chamber 12.

[0080] The collision and shearing between multiple rotating water streams effectively enhances the disturbance and mixing between hot and cold water, thereby completely breaking down the hot and cold water stratification, achieving deep mixing, and further improving the mixing uniformity and efficiency of hot and cold water.

[0081] Specifically, in this embodiment, the multi-ring second diversion holes include an inner ring diversion hole 32 that is uniformly arrayed at equal angles along the circumference of the secondary diversion plate 3, and an outer ring diversion hole 31 that is uniformly arrayed at equal angles along the circumference of the secondary diversion plate 3.

[0082] The inner ring diversion holes 32 are located inside the outer ring diversion holes 31, meaning the circumferential radius of the inner ring diversion holes 32 is smaller than that of the outer ring diversion holes 31. Both are concentrically distributed around the center of the secondary diversion plate 3. A sufficient annular gap is maintained between the inner ring diversion holes 32 and the outer ring diversion holes 31 to ensure the structural strength of the secondary diversion plate 3 and to prevent mutual interference between adjacent second diversion holes.

[0083] As the water flows through the second mixing chamber 11 through the secondary diversion plate 3 to the second mixing chamber 12, the inner ring diversion hole 32 and the outer ring diversion hole 31 simultaneously divert the water flow, thereby dividing the water flow into multiple streams and dispersing it evenly in the circumference within the second mixing chamber 12. This avoids local water flow concentration and allows the water entering the second mixing chamber 12 to mix evenly with the hot water in the second mixing chamber 12 in the circumference, further improving the mixing uniformity and mixing efficiency of the hot and cold water.

[0084] Furthermore, in this embodiment, the inner ring diversion hole 32 is an inclined hole with its axis having a first preset angle with the axis of the tank body 1, and the outer ring diversion hole 31 is an inclined hole with its axis having a second preset angle with the axis of the tank body 1, and the first preset angle and the second preset angle are different.

[0085] When water flows through the inner ring diversion hole 32 and the outer ring diversion hole 31 to the second mixing chamber 12, due to the existence of the tilt angle, the water flow generates a rotational component in the axial direction, thereby forming multiple rotating water flows in the second mixing chamber 12. Through the mutual collision and shearing between the multiple rotating water flows, the disturbance and mixing between the hot and cold water are effectively enhanced, thereby completely breaking the hot and cold stratification, achieving deep mixing, and further improving the mixing uniformity and mixing efficiency of hot and cold water.

[0086] In this application, the first preset angle is different from the second preset angle. Therefore, when the water flows through the inner ring diversion hole 32 and the outer ring diversion hole 31, different rotation speeds are generated, thereby generating multiple water flows with different rotation speeds in the second mixing chamber 12, which intensifies the mutual collision and shearing between the water flows, further enhances the disturbance and mixing between hot and cold water, and improves the mixing uniformity and mixing efficiency of hot and cold water.

[0087] Specifically, in this embodiment, the first preset included angle is 15°, that is, the axis of the inner ring diversion hole 32 is inclined at 15° relative to the axis of the tank body 1; the second preset included angle is 30°, that is, the axis of the outer ring diversion hole 31 is inclined at 30° relative to the axis of the tank body 1, thereby ensuring that the difference in rotational speed between the inner and outer ring diversion holes is moderate, which can effectively promote mixing without causing water flow turbulence due to excessive speed difference.

[0088] Furthermore, in this embodiment, the second end cap 6 is provided with a water outlet 61, and the gas water heater mixing tank also includes a water collecting component 7 located at the water outlet 61 and extending into the second mixing chamber 12. Specifically, the water collecting component 7 is a hollow tubular structure extending horizontally within the second mixing chamber 12, with one end open and the other end closed, and the open end of the water collecting component 7 located on one side of the water outlet 61, and the closed end extending into the interior of the second mixing chamber 12.

[0089] The water collecting component 7 has a water collecting slot 71 on one radial side. The water collecting slot 71 is located on the side of the water collecting component 7 facing the top of the second mixing chamber 12, so that the upper layer of water in the second mixing chamber 12 enters the interior of the water collecting component 7 through the water collecting slot 71 and then flows out from the open end of the water collecting component 7.

[0090] Because hot water is less dense than cold water, hot water rises and cold water sinks, resulting in a clear hot-cold stratification phenomenon in the second mixing chamber 12. The upper layer of water is warmer and more thoroughly mixed, while the lower layer of water is colder and less thoroughly mixed.

[0091] Therefore, in this application, the water collection slot 71 is opened on one radial side of the water collection component 7 and faces the top of the second mixing chamber 12, so that the water collection component 7 collects the upper layer of water in the second mixing chamber 12 with higher water temperature and more thorough mixing. At the same time, it forces the fluid in the second mixing chamber 12 to flow into the water collection component 7 only when the liquid level is greater than the height of the water collection slot 71, thereby avoiding the direct discharge of unmixed fluid, ensuring the uniformity of the outlet water temperature, and thus improving the constant temperature performance and user experience of the gas water heater 10.

[0092] Furthermore, in this embodiment, when the water collecting component 7 is horizontally arranged in the second mixing chamber 12, its axial direction is consistent with the length direction of the tank body 1, and the two are parallel to each other, so that the water collecting component 7 can fully collect the upper layer of water in the second mixing chamber 12 along the axial direction of the tank body 1.

[0093] Meanwhile, the axis of the water collecting component 7 is located above the axis of the tank body 1, meaning that the water collecting component 7 is entirely positioned in the upper half of the second mixing chamber 12. This allows the water collecting slot 71 of the water collecting component 7 to be closer to the top of the tank body 1, raising the liquid level that can enter the water collecting component 7 within the second mixing chamber 12. This allows more water to enter the water collecting component 7 at a higher liquid level and participate in circulation and mixing, further promoting thorough mixing of cold and hot water within the tank body 1. Furthermore, the water collecting slot 71 preferentially collects the higher-temperature upper layer of hot water, preventing the lower layer of low-temperature water from mixing into the outlet channel, thereby improving the constant temperature effect of the outlet water.

[0094] In this embodiment, the water outlet structure also includes a water outlet connector 8, which is installed at the water outlet installation port 61. One end of the water outlet connector 8 is sealed to the open end of the water collection component 7, and the other end extends to the outside of the tank body 1. Thus, the upper layer of water in the second mixing chamber 12 enters the interior of the water collection component 7 through the water collection groove port 71, and then flows out from the open end of the water collection component 7. The water outlet connector 8 extends to the outside of the tank body 1 and is connected to an external water outlet pipe, thereby delivering the uniformly mixed constant temperature hot water to the user end.

[0095] Furthermore, in this embodiment, the water outlet mounting port 61 is provided with a downwardly recessed second groove 611 along the circumference, and the outer wall of the water outlet connector 8 is provided with a second protrusion 81 along the circumference. When the water outlet connector 8 is inserted into the water outlet mounting port 61, the second protrusion 81 and the second groove 611 are nested and engaged.

[0096] Specifically, the lower end of the water outlet connector 8 is a cylindrical section, and the second protrusion 81 is provided on the outer wall of the cylindrical section; the second protrusion 81 is a through hole provided on the second end cover 6, and the second groove 611 is provided on the side of the through hole facing outward, so that the water outlet installation port 61 forms a stepped structure.

[0097] When connecting the water outlet connector 8 to the water outlet mounting port 61, the cylindrical section at the lower end of the water outlet connector 8 is inserted into the through hole, so that the cylindrical section extends into the second mixing chamber 12 to connect to the open end of the water collecting component 7. At the same time, the second protrusion 81 on the outer wall of the cylindrical section is nested and engaged with the second groove 611 on the outer side of the water outlet mounting port 61, thereby realizing the connection between the water outlet connector 8 and the water outlet mounting port 61, and making one end of the water outlet connector 8 extend outside the tank body 1 to connect to the user end.

[0098] In this application, the nested engagement of the second protrusion 81 and the second groove 611 can effectively limit the position of the water outlet connector 8 within the water outlet mounting port 61, preventing the water outlet connector 8 from moving axially, thereby ensuring the stability of the connection between the water outlet connector 8 and the second end cap 6.

[0099] Furthermore, in this embodiment, the end of the water outlet connector 8 is provided with a second guide chamfer 82, which is used to guide the insertion of the water outlet connector 8 into the opening end of the water collection component 7. Specifically, the end of the water outlet connector 8 is provided with a second guide chamfer 82 that slopes inward from the outer wall, forming a conical guide surface.

[0100] During assembly, the end of the water outlet connector 8 is inserted into the open end of the water collection component 7. During this process, the second guide chamfer 82 plays a guiding and positioning role, ensuring that the two are quickly and accurately aligned and avoiding misalignment. After the water outlet connector 8 and the open end of the water collection component 7 are inserted into place, a circumferential sealing weld is performed between the outer wall of the open end of the water collection component 7 and the outer wall of the water outlet connector 8 to ensure a full weld and reliable connection.

[0101] In this application, by setting a guide chamfer at the end of the water outlet connector 8, the assembly difficulty is reduced and the production efficiency is improved. At the same time, the sealing between the water outlet connector 8 and the water collection component 7 is ensured, effectively preventing water leakage and the resulting water flow turbulence and noise problems, thereby improving the constant temperature performance and user experience of the gas water heater 10.

[0102] Specifically, the water outlet connector 8 is made of the same or compatible metal material as the water collection component 7 to ensure good sealing performance and structural connection strength between it and the open end of the water collection component 7, and to prevent fluid leakage at the connection.

[0103] Furthermore, in this embodiment, the gas water heater mixing tank also includes an installation bracket disposed on the outer wall of the tank body 1. The installation bracket is fixedly connected to the gas water heater 10 to realize the fixed installation of the tank body 1 on the gas water heater 10, thereby making the installation of the horizontal mixing tank on the embedded or wall-mounted gas water heater 10 stable and reliable, and thus ensuring the user experience and safety of the gas water heater 10.

[0104] Specifically, the mounting bracket consists of two L-shaped mounting brackets 9 located on the outer wall of the tank body 1. The two L-shaped mounting brackets 9 are spaced apart and facing away from each other on the outer wall of the tank body 1, that is, the two L-shaped mounting brackets 9 are located on both sides of the tank body 1 and are away from each other, so that the two L-shaped mounting brackets 9 are evenly stressed. Then, the two L-shaped mounting brackets 9 are fixedly connected to the gas water heater 10, thereby improving the stability of the horizontal mixing tank installed on the embedded or wall-mounted gas water heater 10.

[0105] Specifically, the L-shaped mounting bracket 9 includes a main body 91 and a flanged part 92. One end of the main body 91 is fixedly connected to the tank body 1, and the other end extends vertically away from the tank body 1. The flanged part 92 is located at the end of the main body 91 away from the tank body 1 and extends horizontally, thereby forming an L-shaped structure and improving the load-bearing performance of the mounting bracket.

[0106] In this application, the flanged part 92 is provided with a mounting hole 921, which is used to fix and connect with the gas water heater 10 by screws or other fasteners, thereby realizing the firm installation of the tank body 1 on the gas water heater 10, and thus improving the stability of the horizontal mixing tank installed on the embedded or wall-mounted gas water heater 10.

[0107] Furthermore, in this embodiment, the main body 91 of the two L-shaped mounting brackets 9 have different vertical extension lengths in the direction away from the tank body 1, that is, the main body 91 of one L-shaped mounting bracket 9 extends vertically for a longer length, while the main body 91 of the other L-shaped mounting bracket 9 extends vertically for a shorter length, and there is a height difference between the two.

[0108] Since the installation plane (such as the installation position on the inner wall of the casing) of the embedded gas water heater 10 and the wall-mounted gas water heater 10 may be at different heights, by setting the main body 91 of the two L-shaped mounting brackets 9 to different vertical extension lengths, the tank body 1 can be adapted to the installation requirements of different installation planes of the gas water heater 10, ensuring that the tank body 1 can be stably installed on gas water heaters 10 of different models or different installation methods.

[0109] Specifically, the main body 91 of the L-shaped mounting bracket 9 near the first port 14 has a shorter vertical extension length, while the main body 91 of the L-shaped mounting bracket 9 near the second port 15 has a longer vertical extension length. This allows the tank body 1 to be slightly tilted during installation, which facilitates the natural accumulation of hot water in the water-containing cavity towards the water outlet 61 under the action of gravity, thus promoting the smooth output of constant temperature water.

[0110] In actual implementation, one end of the main body 91 is fixedly connected to the outer wall of the tank body 1 by welding or riveting, and the connection point is located in the middle area of ​​the tank body 1 in the axial direction. This concentrates the supporting effect of the mounting bracket on the tank in the middle of the tank, effectively preventing the tank from tilting or deforming due to its own weight or vibration, and further improving the stability of the overall structure.

[0111] The above-described contents can be implemented individually or in various combinations, and these variations are all within the protection scope of this invention.

[0112] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mixing tank for a gas water heater, characterized in that: The system includes a tank body (1), a primary diversion cylinder (2) disposed within the tank body (1), and a secondary diversion plate (3) disposed within the tank body (1). The tank body (1) is provided with a water-containing cavity for holding hot water. The secondary diversion plate (3) divides the water-containing cavity into a first mixing cavity (11) and a second mixing cavity (12). The primary diversion cylinder (2) has multiple rows of through first diversion holes (21) arranged axially on its cylinder wall. The multiple rows of first diversion holes (21) are used to evenly distribute the water flow entering the tank body (1) into the first mixing cavity (11) axially. The secondary diversion plate (3) has multiple rings of through second diversion holes arranged circumferentially on its surface. The multiple rings of second diversion holes are used to evenly distribute the water flow in the first mixing cavity (11) into the second mixing cavity (12) circumferentially.

2. The mixing tank for a gas water heater as described in claim 1, characterized in that: The two adjacent rows of the first diversion holes (21) are staggered at a preset angle in the circumferential direction so that the water flow entering the tank body (1) is evenly distributed in the circumferential direction into the first mixing chamber (11).

3. A mixing tank for a gas water heater as described in claim 2, characterized in that: Along the direction of water flow, the diameter of the first diversion hole (21) in the odd-numbered row is the first diameter, and the diameter of the first diversion hole (21) in the even-numbered row is the second diameter. The first diameter is larger than the second diameter.

4. A mixing tank for a gas water heater as described in claim 1, characterized in that: The primary diverter (2) is equipped with a spiral guide assembly, which is used to make the water flowing into the tank body (1) rotate.

5. A mixing tank for a gas water heater as described in claim 4, characterized in that: The spiral guide assembly includes a spiral guide (22) arranged along the axial direction of the primary diversion cylinder (2). The spiral guide (22) extends spirally within the primary diversion cylinder (2) so that the water flow in the tank body (1) rotates under the guiding action of the spiral guide (22).

6. A mixing tank for a gas water heater as described in claim 5, characterized in that: The spiral guide assembly also includes a noise-reducing spring (23) arranged along the axial direction of the primary diversion cylinder (2). The noise-reducing spring (23) extends spirally inside the primary diversion cylinder (2) and is coaxial with the spiral guide component (22) to reduce the impact noise of water flow entering the tank body (1).

7. A mixing tank for a gas water heater as described in claim 1, characterized in that: The outer wall of the tank body (1) is provided with a water inlet (13), the first-stage diverter (2) is located at the water inlet (13) and extends vertically inside the tank body (1); the gas water heater mixing tank also includes a water inlet connector (4) connected to the first-stage diverter (2), the outer side of the water inlet (13) is provided with a first groove (131) along the circumferential direction, the outer wall of the water inlet connector (4) is provided with a first protrusion (41) along the circumferential direction, when the water inlet connector (4) is inserted into the water inlet (13), the first protrusion (41) and the first groove (131) are nested together.

8. A mixing tank for a gas water heater as described in claim 1, characterized in that: The second diversion holes are all inclined holes with a preset angle between their axis and the axis of the tank body (1), which are used to generate a rotating flow when the water flows through them, so as to generate multiple rotating water flows in the second mixing chamber (12).

9. A mixing tank for a gas water heater as described in claim 8, characterized in that: The second diversion hole includes an inner diversion hole (32) and an outer diversion hole (31). The inner diversion hole (32) is an inclined hole with its axis having a first preset angle with the axis of the tank body (1). The outer diversion hole (31) is an inclined hole with its axis having a second preset angle with the axis of the tank body (1). The first preset angle and the second preset angle are different.

10. A mixing tank for a gas water heater as described in claim 1, characterized in that: The tank body (1) has a first port (14) and a second port (15) coaxially arranged at both ends. The first port (14) is located at one end of the first mixing chamber (11), and the second port (15) is located at one end of the second mixing chamber (12). The gas water heater mixing tank also includes a first end cap (5) and a second end cap (6). The first end cap (5) is used to close the first port (14), and the second end cap (6) is used to close the second port (15) to form a sealed water-containing cavity in the tank body (1).

11. A mixing tank for a gas water heater as described in claim 10, characterized in that: The second end cap (6) is provided with a water outlet (61). The gas water heater mixing tank also includes a water collection component (7) located at the water outlet (61) and extending to the second mixing chamber (12). The water collection component (7) has a water collection slot (71) on one radial side. The water collection slot (71) is located on the side of the water collection component (7) facing the top of the tank body (1), so that the upper layer of water in the second mixing chamber (12) enters the water collection component (7) through the water collection slot (71).

12. A mixing tank for a gas water heater as described in claim 11, characterized in that: The gas water heater mixing tank also includes a water outlet connector (8) that communicates with the water collection component (7). The outer side of the water outlet installation port (61) is provided with a second groove (611) along the circumferential direction. The outer wall of the water outlet connector (8) is provided with a second protrusion (81) along the circumferential direction. When the water outlet connector (8) is inserted into the water outlet installation port (61), the second protrusion (81) and the second groove (611) are nested together.

13. A mixing tank for a gas water heater as described in claim 1, characterized in that: The gas water heater mixing tank also includes an installation bracket on the outer wall of the tank body (1). The installation bracket consists of two L-shaped installation brackets (9) spaced apart and facing away from each other on the outer wall of the tank body (1). The two L-shaped installation brackets (9) are provided with installation holes for fixing the tank body (1) on the gas water heater (10).

14. A mixing tank for a gas water heater as described in claim 13, characterized in that: The two L-shaped mounting brackets (9) have different extension lengths in the direction away from the outer wall of the tank body (1) to adapt to the installation of the gas water heater (10) on different mounting planes.

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