A steady flow valve and a water heater assembly comprising the same

Abstract

The application discloses a steady flow valve and a water heater assembly comprising the same, and relates to the technical field of water heaters. The steady flow valve comprises a shell, a first valve core and a second valve core. The shell is provided with an inlet and an outlet. A main flow channel and an auxiliary flow channel are arranged between the inlet and the outlet. After flowing into the shell from the inlet, a flow medium can flow to the outlet through the main flow channel and the auxiliary flow channel respectively. The shell is provided with a first communication port and a second communication port on the flow paths of the main flow channel and the auxiliary flow channel respectively. The first end of the first valve core is matched with the first communication port. The first valve core is movably arranged in the shell. The second valve core is arranged in the auxiliary flow channel and matched with the second communication port. The second valve core can be extended or retracted along the flow direction of the flow medium in the auxiliary flow channel to open or close the second communication port, thereby driving the first valve core to move and adjusting the flow area between the first end of the first valve core and the first communication port, so that the flow of the flow medium discharged from the outlet will not have large fluctuations.

Description

Technical Field

[0001] This invention relates to the field of water heater technology, and in particular to a flow regulator valve and a water heater assembly including the same. Background Technology

[0002] In the field of gas water heater technology, the inlet pipe of a gas water heater delivers cold water to a heat exchanger, where gas combustion heats the water, which is then delivered to the user through the outlet pipe. However, gas water heaters face many uncertainties during use, such as fluctuations in the inlet water flow, the purity of the combustion gas, and the strength of the external wind. These factors can affect the constant temperature performance of the gas water heater or cause it to malfunction.

[0003] Taking the inlet water flow rate as an example, when the water flow speed in the water pipe fluctuates or the pressure in the water pipe changes, the water flow rate entering the water heater will fluctuate greatly. When this fluctuation reaches a certain level, with the heat provided by the gas in the water heater being constant, it will cause a huge change in the time it takes for the water to be heated, ultimately resulting in a large change in the water temperature at the water heater outlet, which brings a poor user experience. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defect in the prior art that the water flow rate through the water heater will fluctuate greatly when the water flow speed or pressure in the water pipe changes, and to provide a flow stabilizing valve and a water heater assembly including the same.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A flow regulating valve is characterized in that the flow regulating valve includes a housing, a first valve core, and a second valve core; the housing is provided with an inlet and an outlet, and a main flow channel and an auxiliary flow channel are provided between the inlet and the outlet; after the flowing medium enters the housing from the inlet, part of it flows to the outlet through the main flow channel, and the other part flows to the outlet through the auxiliary flow channel.

[0007] The housing is provided with a first communication port on the flow path of the main channel, the first end of the first valve core cooperates with the first communication port, and the first valve core is movably disposed within the housing.

[0008] The housing is provided with a second connection port on the flow path of the auxiliary flow channel. The second valve core is located in the auxiliary flow channel and cooperates with the second connection port. The second valve core is retractable along the flow direction of the flow medium in the auxiliary flow channel to open or close the second connection port, thereby driving the first valve core to move and adjusting the flow area between the first end of the first valve core and the first connection port.

[0009] In this design, when liquid enters the housing through the inlet, because the first end of the first valve core engages with the first connecting port, the liquid cannot be discharged from the main flow channel through the first connecting port. Instead, it preferentially enters the auxiliary flow channel and reaches the second valve core. As the liquid volume increases, the resulting pressure causes the second valve core to expand and contract, thereby opening the second connecting port, through which the liquid is discharged. When the liquid flow rate increases or the pressure at the inlet increases to a certain value, the pressure in the main flow channel is greater than the pressure in the auxiliary flow channel, causing the first valve core to move continuously. The flow area between the first end of the first valve core and the first connecting port continuously increases, and some liquid is discharged through the first connecting port of the main flow channel. When the pressure in the main flow channel and the pressure in the auxiliary flow channel reach equilibrium, the flow area between the first end of the first valve core and the first connecting port no longer increases, thus ensuring a stable liquid outflow from the first connecting port. If the liquid velocity fluctuates or the pressure at the inlet suddenly changes, the pressure in the main flow channel and the pressure in the auxiliary flow channel will change simultaneously and quickly reach a pressure balance. This will alleviate the movement of the first valve core to a certain extent, so that the flow area between the first end of the first valve core and the first connecting port will not change too much, and the liquid flow rate discharged through the outlet will not fluctuate significantly.

[0010] Furthermore, the liquid outlet is located at one end of the housing along the axial direction, the opening of the first connecting port is aligned with the opening of the liquid outlet, and the liquid inlet is positioned in the radial direction of the housing.

[0011] In this design, the first connecting port is oriented in the same direction as the liquid outlet and is located at one end of the shell along the axial direction. It is also set perpendicular to the direction of the liquid inlet, forming a "T" shaped structure. This makes the internal layout of the shell more reasonable, and the flowing medium from the liquid inlet enters the shell vertically, making it easier to divide into two paths that flow simultaneously to the main channel and the auxiliary channel.

[0012] Furthermore, the first valve core includes a protrusion that extends radially toward the inner wall of the housing, the periphery of the protrusion being fitted to the inner wall of the housing, and a first through hole being formed through the protrusion.

[0013] In this solution, by setting a protrusion on the first valve core and using the outer periphery of the protrusion to fit against the inner wall of the housing, it saves more material compared to the entire outer periphery of the first valve core fitting against the inner wall of the housing. Furthermore, the first through hole is opened through the protrusion as a path for the auxiliary flow channel, making the structure more reasonable and the first valve core simpler to process.

[0014] Furthermore, there are multiple first through holes, and all of the multiple first through holes penetrate the protrusion.

[0015] In this scheme, by setting the number of first through holes to multiple, and having multiple first through holes simultaneously serve as the path of the auxiliary flow channel, the flowing medium can quickly enter the auxiliary flow channel. When the flow velocity at the inlet suddenly increases, the pressure difference between the main flow channel and the auxiliary flow channel can be quickly balanced, further alleviating the movement of the first valve core.

[0016] Furthermore, the housing is provided with a baffle on the flow path of the auxiliary flow channel, the baffle is provided with a one-way channel, and the second connecting port is provided on the baffle. The protrusion and the baffle divide the interior of the housing into a first cavity, a second cavity and a third cavity in sequence. The first connecting port is located in the first cavity, and the one-way channel connects the second cavity and the third cavity. The second end of the first valve core is engaged with the second connecting port and is movable within the second connecting port.

[0017] In this design, the interior of the housing is sequentially divided into a first cavity, a second cavity, and a third cavity using a protrusion and a partition. A second connecting port is located on the partition, and a one-way channel connects the second cavity and the third cavity. The second end of the first valve core engages with the second connecting port. Liquid entering the second cavity will enter the third cavity through the one-way channel, making it easier to move the second valve core and open the second connecting port. The overall layout is more reasonable and it is easier to use the pressure difference between the first cavity and the second cavity to move the first valve core.

[0018] Furthermore, the interior of the first valve core is provided with a through hole along the axial direction of the housing. One end of the through hole is connected to the second communication port, and the other end of the through hole is located at the liquid outlet.

[0019] In this design, by setting a through hole inside the first valve core and connecting it to the second connecting port, and setting the other end of the through hole at the liquid outlet, the liquid in the auxiliary flow channel is eventually discharged at the liquid outlet. Compared with opening another outlet to discharge the liquid in the auxiliary flow channel, the internal structure of the flow stabilizing valve is more reasonable.

[0020] Furthermore, the flow control valve also includes an elastic mechanism, wherein the second communication port extends radially inward at one end near the third cavity to form a stepped portion, one end of the elastic mechanism abuts against the first valve core, and the other end of the elastic mechanism abuts against the stepped portion.

[0021] In this solution, the elastic mechanism provides driving force for the first end of the first valve core to cooperate with the first connecting port. At the same time, the pressure difference between the main flow channel and the auxiliary flow channel is used to compress the elastic mechanism, which drives the flow area between the first end of the first valve core and the first connecting port to change, making the operation simpler.

[0022] Furthermore, a stepped hole is provided inside the second end, which communicates with the through hole. The inner diameter of the stepped hole is larger than the inner diameter of the through hole, and one end of the elastic mechanism is disposed inside the stepped hole.

[0023] In this solution, by setting a stepped hole inside the second end of the first valve core and accommodating the elastic mechanism within the stepped hole, the position of the elastic mechanism is made more fixed and the movement of the first valve core is more stable.

[0024] Furthermore, the second valve core includes a valve core body and a sealing spring. The sealing spring is connected to the valve core body and causes the valve core body to close the second communication port. The flow medium in the auxiliary flow channel can drive the valve core body to move and flow into the second communication port.

[0025] In this design, the sealing spring provides elastic force to the valve core body, causing the valve core body to close the second connection port. At the same time, the pressure generated by the flowing medium in the auxiliary flow channel causes the valve core body to move and open the second connection port, making the structure of the entire second valve core more reasonable and the movement simpler.

[0026] Furthermore, the first end of the first valve core has a gradually decreasing longitudinal cross-sectional dimension, at least locally, in the liquid flow direction of the first communication port, so that the flow area of ​​the first communication port gradually increases as the first valve core approaches the second valve core.

[0027] In this design, as the first valve core approaches the second valve core, the flow area of ​​the first connecting port also increases continuously, and the amount of liquid discharged through the first connecting port also gradually increases, thus preventing the first connecting port from suddenly opening and causing a sharp increase in the liquid discharge speed.

[0028] Furthermore, in the direction of liquid flow at the first connection port, the longitudinal cross-sectional dimension of the outer wall of the first end gradually decreases, so that the first end forms a frustum structure.

[0029] In this scheme, this configuration is a preferred configuration for the first end of the first valve core, that is, the longitudinal cross-sectional dimensions of the outer wall of the first end gradually decrease, so that the first end forms a frustum structure.

[0030] Furthermore, at the end face of the first end, the frustum structure extends outward along the liquid flow direction of the first connecting port, and the longitudinal cross-sectional dimension of the extension gradually increases to form an enlarged inverted frustum structure.

[0031] In this scheme, with this setting, when the liquid flow rate at the inlet increases sharply or continuously, causing the pressure in the main channel to suddenly exceed or continuously exceed the pressure in the auxiliary channel, the movement of the first valve core is large. The inverted frustum structure can be used to reduce the area of ​​the first flow port that is opened, preventing the first connecting port from being fully opened and the liquid from being discharged too quickly.

[0032] A water heater assembly, characterized in that the water heater assembly includes: a water heater and a flow regulator valve as described above, wherein the outlet of the flow regulator valve is connected to the inlet of the water heater.

[0033] In this solution, the outlet of the flow stabilizer valve is connected to the inlet of the water heater, so that the liquid velocity entering the inlet of the water heater can be stabilized. Under the condition that the heat provided by the gas in the water heater is constant, the heating time of the water flow will not change too much, thereby ensuring that the liquid temperature from the outlet of the water heater can be stable.

[0034] The positive and progressive effects of this invention are as follows:

[0035] When external liquid enters the housing through the inlet, the liquid preferentially enters the auxiliary flow channel and reaches the second valve core because the first end of the first valve core engages with the first connecting port. As the liquid volume increases, the resulting pressure causes the second valve core to expand and contract, opening the second connecting port and allowing the liquid to be discharged. When the liquid flow rate increases or the pressure at the inlet increases to a certain value, the pressure in the main flow channel is greater than the pressure in the auxiliary flow channel, causing the first valve core to move continuously. The flow area between the first end of the first valve core and the first connecting port continuously increases, and some liquid is discharged through the first connecting port of the main flow channel. When the pressure in the main flow channel and the pressure in the auxiliary flow channel reach equilibrium, the flow area between the first end of the first valve core and the first connecting port no longer increases, thus ensuring a stable liquid outflow from the first connecting port. If the liquid velocity fluctuates or the pressure at the inlet suddenly changes, the pressure in the main flow channel and the pressure in the auxiliary flow channel will change simultaneously and quickly reach a pressure balance. This will alleviate the movement of the first valve core to a certain extent, so that the flow area between the first end of the first valve core and the first connecting port will not change too much. As a result, the liquid flow rate discharged through the outlet will not fluctuate significantly, thus achieving a stable flow effect. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure of the flow stabilizing valve in one embodiment of the present invention.

[0037] Figure 2 This is a cross-sectional structural diagram of the shell in one embodiment of the present invention.

[0038] Figure 3 This is a cross-sectional structural diagram of the first valve core in one embodiment of the present invention.

[0039] Figure 4 This is a cross-sectional view of the flow stabilizing valve in one embodiment of the present invention, with the second valve core in the closed state.

[0040] Figure 5 This is a cross-sectional view of the flow stabilizing valve in one embodiment of the present invention, with the second valve core in the open state.

[0041] Explanation of reference numerals in the attached figures:

[0042] 100 shell

[0043] Inlet 110

[0044] First connecting port 111

[0045] Liquid outlet 120

[0046] Second connector 121

[0047] Step section 1210

[0048] Partition 130

[0049] One-way channel 131

[0050] First valve core 200

[0051] Protrusion 210

[0052] First through hole 211

[0053] Through hole 220

[0054] Step hole 230

[0055] 240 truncated cone structure

[0056] Inverted frustum structure 250

[0057] First end 260

[0058] Second end 270

[0059] Second valve core 300

[0060] Valve core body 310

[0061] Sealing spring 320

[0062] Flexible mechanism 400

[0063] First cavity 500

[0064] Second cavity 600

[0065] Third cavity 700 Detailed Implementation

[0066] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0067] This embodiment discloses a flow regulating valve, which includes a housing 100, a first valve core 200, and a second valve core 300. The housing 100 is provided with an inlet 110 and an outlet 120, and a main flow channel is provided between the inlet 110 and the outlet 120 (see reference). Figure 5 (solid arrow in the middle) and auxiliary flow channel (reference) Figure 5 (The dashed arrow in the image); After the flowing medium enters the housing 100 through the inlet 110, part of it flows through the main channel to the outlet 120, and the other part flows through the auxiliary channel to the outlet 120; The housing 100 is provided with a first connecting port 111 on the flow path of the main channel, and the first end 260 of the first valve core 200 cooperates with the first connecting port 111. The first valve core 200 is movable within the housing 100; The housing 100 is provided with a second connecting port 121 on the flow path of the auxiliary channel, and the second valve core 300 is located in the auxiliary channel and cooperates with the second connecting port 121. The second valve core 300 is retractable along the flow direction of the flowing medium in the auxiliary channel to open or close the second connecting port 121, thereby driving the first valve core 200 to move and adjusting the flow area between the first end 260 of the first valve core 200 and the first connecting port 111.

[0068] Specifically, such as Figure 1 As shown, from the overall appearance of the flow control valve, the flow control valve includes a housing 100, on which a liquid inlet 110 and a liquid outlet 120 are provided. The liquid outlet 120 is located at one end of the housing 100 along the axial direction, and the liquid inlet 110 is arranged towards the radial direction of the housing 100, that is, the liquid outlet 120 and the liquid inlet 110 are perpendicular to each other. The internal structure of the housing 100 is as follows. Figure 2 As shown, a first connecting port 111 is provided near the outlet 120, and the opening orientation of the first connecting port 111 is consistent with the opening orientation of the outlet 120. Of course, in other embodiments, the positions of the inlet 110 and the outlet 120 can also be adjusted on the housing 100 according to actual needs, for example, they can be respectively set at both ends of the housing 100. However, with the arrangement in this embodiment, the interior of the housing 100 is set into a "T" shape, making the internal layout of the housing 100 more reasonable. The flowing medium of the inlet 110 enters the housing 100 vertically, making it easier to divide into two paths that flow simultaneously to the main channel and the auxiliary channel.

[0069] Furthermore, a first valve core 200 is provided inside the housing 100, and the specific structure of the first valve core 200 is as follows: Figure 3 As shown, the position of the first valve core 200 within the housing 100 is as follows: Figure 4 and Figure 5As shown. The main structure of the first valve core 200 is a cylinder, and the radial direction of the cylinder is consistent with the radial direction of the housing 100. A protrusion 210 extends radially towards the inner wall of the housing 100 on the first valve core 200, and the outer periphery of the protrusion 210 fits against the interior of the housing 100. A first through hole 211 is provided through the protrusion 210. The outer periphery of the protrusion 210 fits against the inner wall of the housing 100. Of course, in other embodiments, the protrusion 210 may not be provided, and the outer wall of the first valve core 200 may directly fit against the inner wall of the housing 100. However, the first through hole 211 needs to be provided inside the first valve core 200. Compared with this method, the provision of the protrusion 210 and the provision of the first through hole 211 in the protrusion 210 in this embodiment saves more material. The first through hole 211 can serve as the path of the auxiliary flow channel, which is more reasonable in structure, and the first valve core 200 is also simpler to process.

[0070] like Figure 2 , Figure 4 and Figure 5 As shown, the housing 100 has a baffle 130 on the flow path of the auxiliary flow channel. The baffle 130 has a one-way channel 131, and the second connecting port 121 is provided on the baffle 130. The protrusion 210 and the baffle 130 divide the interior of the housing 100 into a first cavity 500, a second cavity 600 and a third cavity 700 in sequence. The first connecting port 111 is located in the first cavity 500, and the one-way channel 131 connects the second cavity 600 and the third cavity 700. The second end 270 of the first valve core 200 is connected to the second connecting port 121 and is movable within the second connecting port 121.

[0071] Specifically, the baffle 130 is located at the end of the housing 100 away from the liquid outlet 120. The baffle 130 extends radially inward on the housing 100 to form a baffle platform and forms a through hole structure in the center. This through hole structure is the second communication port 121 of the flow stabilizing valve. One end of the first valve core 200 is connected to the second communication port 121 and can move within the second communication port 121. The protrusion 210 on the first valve core 200 and the partition 130 on the housing 100 sequentially divide the interior of the housing 100 into a first cavity 500, a second cavity 600, and a third cavity 700. The first connecting port 111 is located in the first cavity 500. A one-way channel 131 is provided on the partition 130 to connect the second cavity 600 and the third cavity 700. This allows the liquid in the inlet 110 to enter the second cavity 600 through the first through hole 211 on the protrusion 210, and then enter the third cavity 700 through the one-way channel 131 on the partition 130. Thus, the pressure of the liquid can be used to move the second valve core 300 in the third cavity 700, thereby opening the second connecting port 121. The overall layout is more reasonable and it is more convenient to use the pressure difference between the first cavity 500 and the second cavity 600 to drive the movement of the first valve core 200.

[0072] Furthermore, a through hole 220 is provided inside the first valve core 200 along the axial direction of the housing 100. One end of the through hole 220 is connected to the second communication port 121, and the other end of the through hole 220 is located at the liquid outlet 120, so that the liquid in the auxiliary flow channel is eventually discharged at the liquid outlet 120. Compared with opening another outlet to discharge the liquid in the auxiliary flow channel, the internal structure of the flow stabilizing valve is more reasonable.

[0073] like Figure 4 and Figure 5As shown, the flow control valve includes an elastic mechanism 400. The second connecting port 121 extends radially inward at one end near the third cavity 700, forming a stepped portion 1210. One end of the elastic mechanism 400 abuts against the first valve core 200, and the other end abuts against the stepped portion 1210. By providing the elastic mechanism 400, a driving force is provided for the first end 260 of the first valve core 200 to engage with the first connecting port 111. Simultaneously, the pressure difference between the main flow channel and the auxiliary flow channel causes the elastic mechanism 400 to compress, driving a change in the flow area between the first end 260 of the first valve core 200 and the first connecting port 111, simplifying operation. Furthermore, a stepped hole 230 is formed inside the second end 270 of the first valve core 200. The stepped hole 230 communicates with the through hole 220. The inner diameter of the stepped hole 230 is larger than the inner diameter of the through hole 220. One end of the elastic mechanism 400 is disposed inside the stepped hole 230. By housing the elastic mechanism 400 within the stepped hole 230, the position of the elastic mechanism 400 becomes more fixed, and the movement of the first valve core 200 becomes more stable. In this embodiment, the elastic mechanism 400 directly adopts a compression spring, which has a relatively simple structure. However, in other embodiments, the elastic mechanism 400 can adopt any specific elastic structure existing in the prior art, as long as it can provide driving force for the first end 260 of the first valve core 200 to cooperate with the first communication port 111 and be retractable.

[0074] like Figure 4 and Figure 5 As shown, the second valve core 300 includes a valve core body 310 and a sealing spring 320. The sealing spring 320 is connected to the valve core body 310 and causes the valve core body 310 to close the second communication port 121. The flowing medium in the auxiliary flow channel can drive the valve core body 310 to move and flow into the second communication port 121.

[0075] Specifically, a second valve core 300 is provided in the third cavity 700. The second valve core 300 includes a valve core body 310 and a sealing spring 320. The sealing spring 320 is sleeved on the valve core body 310. A fixing structure for fixing the valve core body 310 is provided in the third cavity 700. The fixing structure includes a first wall and a second wall. The first wall is located between the outlet of the one-way channel 131 and the second connecting port 121. The specific structure of the first wall is a thin-walled cylindrical structure. The second wall is located at the end of the third cavity 700 away from the one-way channel 131. Its specific structure is a cross-shaped bracket structure. The cross-shaped bracket has an opening at the center connection. One end of the valve core body 310 is engaged with the center of the ring on the first wall. The other end of the valve core body 310 passes through the central opening of the cross-shaped bracket, so that the valve core body 310 is movable relative to the fixing structure. One end of the sealing spring 320 abuts against the cross-shaped bracket, and the other end abuts against the valve core body 310. The elastic force of the sealing spring 320 causes the valve core body 310 to close the second communication port 121. As the amount of liquid flowing into the third cavity 700 through the one-way channel 131 gradually increases, the pressure of the liquid squeezes one end of the valve core body 310, causing the sealing spring 320 to compress, thereby causing the valve core body 310 to move, so that the liquid in the third cavity 700 flows into the second communication port 121.

[0076] like Figure 3 , Figure 4 and Figure 5 As shown, the first end 260 of the first valve core 200 has a gradually decreasing longitudinal cross-sectional dimension, at least partially, in the liquid flow direction of the first connecting port 111. This allows the flow area of ​​the first connecting port 111 to gradually increase as the first valve core 200 approaches the second valve core 300. Specifically, the longitudinal cross-sectional dimension of the outer wall of the first end 260 gradually decreases in the liquid flow direction of the first connecting port 111, so that the first end 260 forms a frustum structure 240. This arrangement ensures that the flow area of ​​the first connecting port 111 continuously increases as the first valve core 200 approaches the second valve core 300, and the amount of liquid discharged through the first connecting port 111 gradually increases, preventing the first connecting port 111 from suddenly opening and causing a sharp increase in the liquid discharge rate. Of course, in other embodiments, the first end 260 of the first valve core 200 does not need to have all its longitudinal cross-sectional dimensions gradually reduced to form a frustum structure 240. It is sufficient that the longitudinal cross-sectional dimensions of the local area gradually decrease, so that the flow area of ​​the first communication port 111 continuously increases as the first valve core 200 approaches the second valve core 300.

[0077] Furthermore, the frustum structure 240 extends outward from the end face of the first end 260 along the liquid flow direction of the first connecting port 111, and the longitudinal cross-sectional dimension of the extension gradually increases to form an enlarged inverted frustum structure 250. With this arrangement, when the liquid flow velocity at the inlet 110 increases sharply or continuously, causing the pressure in the main flow channel to suddenly exceed or continuously exceed the pressure in the auxiliary flow channel, the movement of the first valve core 200 is large. The inverted frustum structure 250 can be used to reduce the area of ​​the first flow port that is opened, preventing the first connecting port 111 from being fully opened and the liquid from being discharged too quickly.

[0078] The overall working principle of the flow stabilizing valve in this embodiment is as follows:

[0079] like Figure 5 As shown in the diagram, the solid arrows represent the flow path of the main channel, and the dashed arrows represent the flow path of the auxiliary channel. When liquid enters the housing 100 through the inlet 110, because the first end 260 of the first valve core 200 engages with the first connecting port 111, the liquid cannot be discharged from the main channel through the first connecting port 111. Instead, it preferentially enters the auxiliary channel and reaches the second valve core 300. As the liquid volume increases, the resulting pressure causes the second valve core 300 to expand and contract, thereby opening the second connecting port 121, through which the liquid is discharged. When the liquid flow rate increases or the pressure at the inlet 110 increases to a certain value, the pressure in the main channel is greater than the pressure in the auxiliary channel, causing the first valve core 200 to move continuously. The flow area between the first end 260 of the first valve core 200 and the first connecting port 111 continuously increases, and some liquid is discharged through the first connecting port 111 of the main channel. When the pressure in the main flow channel and the pressure in the auxiliary flow channel reach equilibrium, the flow area between the first end 260 of the first valve core 200 and the first connecting port 111 no longer increases, thus ensuring the stability of the liquid outflow at the first connecting port 111. If the liquid velocity fluctuates or the pressure at the inlet 110 suddenly changes, the pressure in the main flow channel and the pressure in the auxiliary flow channel change simultaneously and quickly reach a pressure equilibrium state. This reduces the movement of the first valve core 200 to some extent, ensuring that the flow area between the first end 260 of the first valve core 200 and the first connecting port 111 does not change excessively, and the liquid flow rate discharged through the outlet 120 does not fluctuate significantly.

[0080] Furthermore, by providing a frustum structure 240 and an inverted frustum structure 250 at the first end 260 of the first valve core 200, the discharge flow of liquid is controlled. When the liquid initially flows into the housing 100 through the inlet 110, it flows into the third cavity 700 through the one-way channel 131. The pressure applied by the liquid at this time is insufficient to push the valve core body 310 of the second valve core 300, so the first end 260 of the first valve core 200 will not move, thereby preventing the liquid from flowing out through the first connecting port 111. As liquid continuously enters, the pressure exerted by the liquid in the third chamber 700 continuously increases. When a certain pressure value is reached, the valve core body 310 of the second valve core 300 is pushed, causing the second connecting port 121 to open. Liquid is discharged through the second connecting port 121. The size of the second connecting port 121 can be adjusted according to actual conditions. At this time, the second chamber 600 and the third chamber 700 are connected to the outside atmosphere and the pressure decreases. Then, the pressure in the first chamber 500 gradually becomes greater than the pressure in the second chamber 600, causing the first valve core 200 to move. The frustum structure 240 located at the first end 260 of the first valve core 200 disengages from the first connecting port 111, thereby opening the first connecting port 111. Until the pressure in the first chamber 500 is the same as the pressure in the second chamber 600, the first valve core 200 no longer moves, and the liquid is stably discharged from the first connecting port 111. When the liquid flow rate at the inlet 110 increases, liquid simultaneously enters the first chamber 500 and the second chamber 600, allowing for rapid adjustment of the pressure within both chambers to quickly reach equilibrium. This ensures that the frustum structure 240 at the first end 260 of the first valve core 200 does not experience significant displacement relative to the first connecting port 111, thus preventing excessive fluctuations in the liquid output from the first connecting port 111. However, when the flow rate at the inlet 110 increases rapidly, the pressure in the first chamber 500 increases rapidly, becoming significantly greater than the pressure in the second chamber 600. At this point, the first valve core 200 quickly repositions itself. The inverted frustum structure 250 at the first end 260 of the first valve core 200 continuously approaches the first connecting port 111, further reducing the open area of ​​the first connecting port 111 and preventing a sharp increase in the liquid output through the first connecting port 111.

[0081] In addition, in this embodiment, the number of first through holes 211 is set to one, but in other embodiments, several first through holes 211 can be opened on the protrusion 210, so that multiple first through holes 211 can simultaneously serve as the path of the auxiliary flow channel, allowing the flowing medium to quickly enter the auxiliary flow channel. When the flow rate of the liquid inlet 110 suddenly increases, it can also quickly balance the pressure difference between the main flow channel and the auxiliary flow channel, further alleviating the movement of the first valve core 200.

[0082] This embodiment also provides a water heater assembly, which includes a water heater and a flow regulator valve as described above. The outlet 120 of the flow regulator valve is connected to the inlet of the water heater, so that the liquid velocity entering the inlet of the water heater can be stabilized. Under the condition that the heat provided by the gas in the water heater is constant, the heating time of the water flow will not change too much, thereby ensuring that the liquid temperature from the outlet of the water heater can be stable.

[0083] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A steady flow valve characterized by, The steady flow valve comprises a housing, a first valve core and a second valve core; the housing is provided with an inlet and an outlet, and has a main flow channel and an auxiliary flow channel between the inlet and the outlet; after the flow medium enters the housing from the inlet, a part of the flow medium flows to the outlet through the main flow channel, and another part of the flow medium flows to the outlet through the auxiliary flow channel; The housing is provided with a first communication port on the flow path of the main flow channel, and the first end of the first valve core is matched with the first communication port, and the first valve core is movably arranged in the housing; The housing is provided with a second communication port on the flow path of the auxiliary flow channel, and the second valve core is located in the auxiliary flow channel and matched with the second communication port, and the second valve core is telescopic along the flow direction of the flow medium in the auxiliary flow channel to open or close the second communication port, thereby driving the first valve core to move and adjusting the flow area between the first end of the first valve core and the first communication port, the outlet is located at one end of the housing in the axial direction, the opening directions of the first communication port and the outlet are consistent, and the inlet is arranged in the radial direction of the housing; the first valve core comprises a protruding part, the protruding part extends to the inner wall of the housing in the radial direction of the first valve core, the periphery of the protruding part is attached to the inner wall of the housing, and a first through hole is formed through the protruding part; The housing is provided with a barrier part on the flow path of the auxiliary flow channel, the barrier part is provided with a one-way channel, and the second communication port is arranged on the barrier part, the protruding part and the barrier part sequentially divide the interior of the housing into a first cavity, a second cavity and a third cavity, the first communication port is located in the first cavity, and the one-way channel communicates the second cavity and the third cavity; the second end of the first valve core is matched with the second communication port and is movable in the second communication port; a through hole is formed in the interior of the first valve core along the axial direction of the housing, one end of the through hole communicates with the second communication port, and the other end of the through hole is arranged at the outlet.

2. The steady flow valve of claim 1, wherein, The number of the first through holes is multiple, and the multiple first through holes are all through the protruding part.

3. The steady flow valve of claim 1, wherein, The steady flow valve further comprises an elastic mechanism, one end of the elastic mechanism abuts against the first valve core, and the other end of the elastic mechanism abuts against a stepped part formed by the second communication port extending inward in the radial direction close to the third cavity.

4. The steady flow valve of claim 3, wherein A stepped hole is formed in the interior of the second end, the stepped hole communicates with the through hole, the inner diameter of the stepped hole is larger than that of the through hole, and one end of the elastic mechanism is arranged in the interior of the stepped hole.

5. The steady flow valve of claim 1, wherein, The second valve core comprises a valve core body and a sealing spring, the sealing spring is connected to the valve core body and drives the valve core body to close the second communication port, and the flow medium in the auxiliary flow channel can drive the valve core body to move and flow into the second communication port.

6. The steady flow valve of claim 1, wherein, The first end of the first valve core gradually decreases in longitudinal section size in the liquid flow direction of the first communication port, so that the first valve core gradually increases the flow area of the first communication port when approaching the second valve core.

7. The steady flow valve of claim 6, wherein, The peripheral wall of the first end gradually decreases in longitudinal section size in the liquid flow direction of the first communication port, so that the first end forms a circular truncated cone structure.

8. The steady flow valve of claim 7, wherein, The circular truncated cone structure extends outward along the liquid flow direction of the first communication port at the end surface of the first end, and the extended longitudinal section size gradually increases to form a circular inverted truncated cone structure with an expanding diameter.

9. A water heater assembly comprising: The water heater assembly comprises: a water heater; The flow stabilizing valve according to any one of claims 1-8, wherein the liquid outlet of the flow stabilizing valve is connected to the water inlet of the water heater.

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