Steady flow valve and water heater comprising same

Abstract

The utility model discloses a steady flow valve and a water heater comprising the same, the steady flow valve comprises a shell, a first end and a second end are arranged on the shell in the flowing direction of fluid, and the first end and the second end are oppositely arranged; the pressure bearing disc is arranged in the shell and located at the first end of the shell; the magnetic assembly is arranged in the shell and located between the second end of the shell and the pressure bearing disc, and at least part of the magnetic assembly is connected with the pressure bearing disc; the pressure bearing disc can be pushed by fluid to move from an initial position to the second end of the shell in the flowing direction of the fluid, and can move back to the initial position in the direction opposite to the flowing direction of the fluid under the action of magnetic restoring force of the magnetic assembly. By means of the mechanism, the flow of the fluid can be adjusted, and the stability of the flow of the fluid is kept. Specifically, when the flow is increased, the pressure-bearing disc is pushed to generate displacement, so that the size of the cross section of the fluid discharged from the liquid outlet through the shell is reduced, and control over the flow of the fluid is achieved.

Description

Technical Field

[0001] The utility model relates to the field of water heaters, in particular to a flow stabilizing valve and a water heater comprising the same. Background Art

[0002] For water heater users, the water flow in their homes is unstable. If the water flow fluctuates or the pressure is too high, it will bring a bad experience. For example, water flow fluctuations will cause the water outlet of the water heater to fluctuate between hot and cold. Excessive water pressure may cause parts to bulge and crack, or the temperature may be too low, causing the back end to freeze and crack while continuing to flow water.

[0003] Therefore, the water flow control problem of water heaters has become the focus of attention now. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects in the prior art and provide a flow stabilizing valve and a water heater comprising the same.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] A flow-stabilizing valve, comprising:

[0007] A shell, on which a first end and a second end are arranged opposite to each other along a flow direction of the fluid;

[0008] A pressure plate, disposed inside the shell and located at a first end of the shell;

[0009] A magnetic assembly is disposed inside the shell and between the second end of the shell and the pressure plate, and at least a portion of the magnetic assembly is connected to the pressure plate;

[0010] Wherein, the pressure plate can be pushed by the fluid to move from the initial position along the flow direction of the fluid toward the second end of the shell, and can move back to the initial position along the opposite direction of the fluid flow under the action of the magnetic restoring force of the magnetic component.

[0011] In this technical solution, the pressure plate can move along the flow direction of the fluid under the push of the fluid, and return to the initial position under the action of the magnetic restoring force of the magnetic component. Such a mechanism can adjust the flow rate of the fluid and maintain the stability of the fluid flow rate. Specifically, when the flow rate increases, the pressure plate will be pushed to displace, thereby reducing the cross-sectional size of the fluid discharged from the liquid outlet through the shell, thereby achieving the control of the fluid flow rate. Conversely, the magnetic force of the magnetic component pushes the pressure plate back to its initial position, thereby avoiding the problem of flow fluctuations and improving the flow stabilization effect of the flow stabilization valve.

[0012] In addition, since the flow regulating valve mainly relies on the interaction between the magnetic restoring force of the magnetic component and the fluid pressure to regulate the flow, it does not have a complex mechanical structure and is therefore more reliable, reducing the probability of failure due to mechanical wear.

[0013] In addition, in the present technical solution, the magnetic component can be used to absorb iron filings and their alloys, as well as impurities such as mud and sand contained in the fluid, which can purify the water quality and make the bath water cleaner.

[0014] Preferably, when the fluid pressure does not reach the steady flow point, the pressure plate is located at the initial position of the pressure plate;

[0015] When the fluid pressure reaches the steady flow point and approaches the dangerous point, the pressure plate starts to move along the flow direction of the fluid under the push of the fluid, and leaves the initial position of the pressure plate and approaches the limit position of the pressure plate, so as to gradually reduce the size of the liquid outlet between the pressure plate and the second end of the shell;

[0016] When the fluid pressure reaches a dangerous point, the pressure plate is located at a limit position of the pressure plate, and the pressure plate and the second end of the shell are fitted together to limit the size of the liquid outlet between the pressure plate and the second end of the shell.

[0017] In the present technical solution, this structural form is adopted, and the pressure plate can be pushed by the fluid to leave its initial position and move to different positions inside the shell along the flow direction of the fluid, thereby producing different working states of the flow stabilizing valve. The flow stabilizing valve can realize precise control of the flow rate according to different working states, thereby protecting the pipeline and equipment from excessive flow shock and damage, ensuring stable and safe flow control, and improving the user experience and comfort.

[0018] Preferably, the magnetic assembly includes a first magnet connected to the pressure plate and located at the second end of the pressure plate facing the shell, and a second magnet opposite to the first magnet and arranged on the inner wall surface of the second end of the shell, and the first magnet and the second magnet have a mutually repelling force.

[0019] In the present technical solution, this structural form is adopted, and the mutual repulsive force between the first magnet and the second magnet can accurately control the displacement of the pressure plate. When the fluid pressure is small, the pressure plate can be pushed back to its initial state by the mutual repulsive force between the first magnet and the second magnet, thereby changing the displacement of the pressure plate, that is, reducing the magnetic gap between the first magnet and the second magnet, so as to achieve the regulation and stabilization of the flow. At the same time, due to the rapid response characteristics of the magnetic force, when the fluid flow changes, the magnetic component can quickly adjust the position of the pressure plate to adapt to the new flow demand. In addition, the control of the pressure plate by the mutual repulsive force of the magnetic component is based on the magnetic principle, so there is no need to rely on an external power supply or control system. This design simplifies the structure of the steady flow valve, improves the stability and reliability of the steady flow valve, and compared with the traditional mechanical valve, this steady flow valve structure has lower energy consumption and better energy-saving and environmental protection effects.

[0020] Preferably, the first magnet and / or the second magnet is an annular bar structure.

[0021] In this technical solution, the annular strip structure can enhance the concentration and focusing effect of the magnetic force. Due to the special shape of the annular strip structure, the magnetic field can be better concentrated inside the ring, making the effect of the magnetic force in the magnetic component stronger, which can increase the repulsive force of the magnetic component and improve the displacement control effect of the pressure plate. At the same time, the magnet with an annular strip structure has a more uniform magnetic field distribution, which can improve the stability and reliability of the flow control valve. By reasonably designing and optimizing the structure of the magnet, the non-uniformity of the magnetic field can be reduced, making the flow control valve more stable and reliable during operation.

[0022] Preferably, the flow stabilizing valve further comprises a piezoelectric ceramic sandwiched between the pressure plate and the first end of the shell, for collecting the voltage difference at both ends of the piezoelectric ceramic along the flow direction of the fluid by using the piezoelectric effect.

[0023] In this technical solution, the piezoelectric effect is: the piezoelectric ceramic is polarized by the thrust of the fluid, and bound charges with opposite signs appear on the surfaces of the two ends of the piezoelectric ceramic. The charge density is proportional to the external mechanical force. This phenomenon is the positive piezoelectric effect. Therefore, by collecting the voltage difference at both ends of the piezoelectric ceramic, the change of fluid pressure can be known after analysis, so that accurate monitoring and feedback control of the flow rate can be achieved, further improving the stability and accuracy of the flow control valve.

[0024] Preferably, a receiving groove for receiving the piezoelectric ceramic is provided at the first end of the pressure plate facing the shell, and the cross-sectional dimension of the receiving groove is matched with the cross-sectional dimension of the piezoelectric ceramic.

[0025] In this technical solution, the piezoelectric ceramic can be stably fixed between the pressure plate and the shell through the design of the receiving groove. The cross-sectional dimensions of the receiving groove are adapted to the cross-sectional dimensions of the piezoelectric ceramic, ensuring close contact between the piezoelectric ceramic and the receiving groove to prevent displacement or loosening during operation. This ensures that the piezoelectric ceramic can accurately sense the pressure changes of the fluid flow and generate a corresponding voltage difference.

[0026] Preferably, the piezoelectric ceramic and the pressure plate are fixedly connected;

[0027] Wherein, the piezoelectric ceramic is fixedly connected to the pressure plate by silicone adhesive.

[0028] In the present technical solution, this structural form is adopted. Silicone glue is an adhesive with excellent bonding properties and high temperature resistance. By using silicone glue to fix the piezoelectric ceramics and the pressure plate, a stable connection can be achieved, and silicone glue can provide strong bonding force to ensure a firm connection between the piezoelectric ceramics and the pressure plate to avoid loosening or displacement during operation. Secondly, silicone glue also has good vibration and impact absorption performance. During the operation of the flow regulating valve, fluid vibration and impact may occur. By using silicone glue to bond the piezoelectric ceramics and the pressure plate, the impact of vibration and impact on the connection can be reduced, and the stability of the connection can be maintained.

[0029] Preferably, the flow stabilizing valve further comprises piezoelectric ceramics, a liquid inlet is provided at the first end of the shell, and the cross-sectional dimensions of the piezoelectric ceramics and / or the pressure plate are smaller than the cross-sectional dimensions of the liquid inlet.

[0030] In the present technical solution, by designing the cross-sectional dimensions of the piezoelectric ceramic and / or the pressure plate to be smaller than the cross-sectional dimensions of the liquid inlet, the smooth flow of the fluid channel can be ensured while also achieving a steady flow effect.

[0031] Preferably, a liquid inlet is provided at the first end of the shell, and a liquid outlet is provided at the second end of the shell;

[0032] The pressure plate is a truncated cone structure, the end of the pressure plate with the largest cross-sectional dimension is arranged toward the liquid inlet, the end of the pressure plate with the smallest cross-sectional dimension is arranged toward the liquid outlet, and a gap is provided between the peripheral side wall surface of the pressure plate and the inner wall surface of the shell for fluid circulation;

[0033] The cross-sectional dimension of the liquid outlet is not greater than the minimum cross-sectional dimension of the pressure plate.

[0034] In this technical solution, the fluid can flow smoothly between the pressure plate and the shell through the truncated cone structure of the pressure plate and the gap between the pressure plate and the inner wall of the shell. The arrangement of the liquid inlet and outlet and the change of the cross-sectional size of the pressure plate help maintain the smooth flow of the fluid, avoid or reduce the blockage or obstruction of the fluid, and ensure stable flow control.

[0035] At the same time, the end with the largest cross-sectional dimension of the pressure plate is arranged toward the liquid inlet, while the end with the smallest cross-sectional dimension is arranged toward the liquid outlet. Such a design can produce flow velocity changes and increase the speed difference of the fluid passing through the pressure plate. Due to the existence of the speed difference, the piezoelectric ceramic or the pressure plate can more sensitively sense the pressure changes of the fluid, thereby improving the accuracy of flow control.

[0036] A water heater, comprising a flow regulating valve as described above.

[0037] In the technical solution, the water heater using this structural form of the flow-stabilizing valve can stably control the flow of hot water according to the set requirements, ensuring that a stable flow of hot water can be obtained when the water heater is used. This can improve the comfort and convenience of using hot water. At the same time, the flow-stabilizing valve has a stable flow control capability and can prevent sudden changes in water temperature. When the water inlet temperature or water supply pressure of the water heater changes, the flow-stabilizing valve can automatically adjust the flow of hot water to maintain a stable water temperature output, preventing users from being affected by sudden changes in water temperature during use.

[0038] The positive and progressive effects of the utility model are:

[0039] 1. The structural form of the flow stabilizing valve enables the pressure plate to move along the flow direction of the fluid under the push of the fluid, and return to the initial position under the action of the magnetic restoring force of the magnetic component. Such a mechanism can adjust the flow of the fluid and maintain the stability of the fluid flow. Specifically, when the flow increases, the pressure plate will be pushed to displace, thereby reducing the cross-sectional size of the fluid discharged from the liquid outlet through the shell, thereby achieving the control of the fluid flow. Conversely, the magnetic force of the magnetic component pushes the pressure plate back to its initial position, thereby avoiding the problem of flow fluctuations and improving the flow stabilizing effect of the flow stabilizing valve.

[0040] In addition, since the flow regulating valve mainly relies on the interaction between the magnetic restoring force of the magnetic component and the fluid pressure to regulate the flow, it does not have a complex mechanical structure and is therefore more reliable, reducing the probability of failure due to mechanical wear.

[0041] In addition, in the present technical solution, the magnetic component can be used to absorb iron filings and their alloys, as well as impurities such as mud and sand contained in the fluid, which can purify the water quality and make the bath water cleaner.

[0042] 2. The water heater can stably control the flow of hot water according to the set requirements, ensuring that a stable flow of hot water can be obtained when the water heater is used. This can improve the comfort and convenience of using hot water. At the same time, the flow control valve has a stable flow control capability to prevent sudden changes in water temperature. When the water inlet temperature or water supply pressure of the water heater changes, the flow control valve can automatically adjust the flow of hot water to maintain a stable water temperature output, preventing users from being affected by sudden changes in water temperature during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a schematic diagram of the structure of the flow stabilizing valve of Example 1.

[0044] Figure 2 This is a schematic diagram of the internal structure of the flow stabilizing valve of Example 1 from the first perspective.

[0045] Figure 3 This is a schematic diagram of the internal structure of the flow stabilizing valve of Example 1 from a second perspective.

[0046] Description of reference numerals:

[0047] Flow control valve 100

[0048] Housing 11

[0049] First End 111

[0050] Second end 112

[0051] Liquid inlet 113

[0052] Liquid outlet 114

[0053] Pressure plate 12

[0054] Accommodation slot 121

[0055] Magnetic component 13

[0056] The first magnet 131

[0057] The second magnet 132

[0058] Piezoelectric ceramics 14

[0059] Fluid flow direction X DETAILED DESCRIPTION

[0060] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0061] [Example 1]

[0062] like Figure 1-Figure 3 As shown, this embodiment discloses a steady flow valve 100 .

[0063] Among them, the flow regulating valve 100 includes a shell 11, a pressure plate 12 and a magnetic component 13, and the shell 11 is provided with a first end 111 and a second end 112 which are relatively arranged along the flow direction of the fluid. Specifically, the pressure plate 12 is arranged inside the shell 11 and located at the first end 111 of the shell 11, and the magnetic component 13 is arranged inside the shell 11 and located between the second end 112 of the shell 11 and the pressure plate 12, and at least part of the magnetic component 13 is connected to the pressure plate 12.

[0064] Therefore, the pressure plate 12 can be pushed by the fluid to move from the initial position along the flow direction of the fluid toward the second end 112 of the shell 11, and can move back to the initial position along the opposite direction of the fluid flow under the action of the magnetic restoring force of the magnetic component 13.

[0065] In this embodiment, the pressure plate 12 can move along the flow direction of the fluid under the push of the fluid, and return to the initial position under the action of the magnetic restoring force of the magnetic component 13. Such a mechanism can regulate the flow rate of the fluid and maintain the stability of the fluid flow rate.

[0066] Specifically, when the flow rate increases, the pressure plate 12 is pushed to move, thereby reducing the cross-sectional size of the fluid discharged from the liquid outlet 114 through the housing 11, thereby achieving control of the fluid flow rate. Conversely, the pressure plate 12 is pushed back to its initial position by the magnetic force of the magnetic component 13, thereby avoiding the problem of flow fluctuation and improving the flow stabilization effect of the flow stabilization valve 100.

[0067] Furthermore, since the flow regulating valve 100 mainly relies on the interaction between the magnetic restoring force of the magnetic component 13 and the fluid pressure to adjust the flow rate, and has no complicated mechanical structure, it has high reliability and reduces the probability of failure due to mechanical wear.

[0068] In addition, in the present technical solution, the magnetic component 13 can adsorb iron filings and their alloys, as well as impurities such as mud and sand contained in the fluid, which can purify the water quality and make the bath water cleaner.

[0069] like Figure 2-Figure 3 As shown, the magnetic assembly 13 specifically includes a first magnet 131 and a second magnet 132 .

[0070] Among them, the first magnet 131 is connected to the pressure plate 12 and is located at the second end 112 of the pressure plate 12 facing the shell 11, and the second magnet 132 is opposite to the first magnet 131 and is arranged on the inner wall surface of the second end 112 of the shell 11, that is, the second magnet 132 is arranged at the second end 112 of the shell 11 and close to the liquid outlet 114.

[0071] At the same time, there is a mutual repulsive force between the first magnet 131 and the second magnet 132 .

[0072] In this embodiment, by adopting this structural form, the mutual repulsive force between the first magnet 131 and the second magnet 132 can accurately control the displacement of the pressure plate 12. When the fluid pressure is small, the pressure plate 12 can be pushed back to its initial state by the mutual repulsive force between the first magnet 131 and the second magnet 132, thereby changing the displacement of the pressure plate 12, that is, reducing the magnetic gap between the first magnet 131 and the second magnet 132, so as to achieve the regulation and stabilization of the flow. At the same time, due to the rapid response characteristics of the magnetic force, when the fluid flow changes, the magnetic component 13 can quickly adjust the position of the pressure plate 12 to adapt to the new flow demand. In addition, the control of the pressure plate 12 by the mutual repulsive force of the magnetic component 13 is based on the principle of magnetic force, so there is no need to rely on an external power supply or control system. This design simplifies the structure of the steady flow valve 100, improves the stability and reliability of the steady flow valve 100, and compared with the traditional mechanical valve, this steady flow valve 100 structure has lower energy consumption and better energy-saving and environmental protection effects.

[0073] Preferably, the first magnet 131 and the second magnet 132 are annular bar structures.

[0074] In this embodiment, the annular strip structure can enhance the concentration and focusing effect of the magnetic force. Due to the special shape of the annular strip structure, the magnetic field can be better concentrated inside the ring, making the effect of the magnetic force in the magnetic component 13 stronger, which can increase the repulsive force of the magnetic component 13 and improve the displacement control effect of the pressure plate 12. At the same time, the magnet of the annular strip structure has a more uniform magnetic field distribution, which can improve the stability and reliability of the flow control valve 100. By reasonably designing and optimizing the structure of the magnet, the inhomogeneity of the magnetic field can be reduced, making the flow control valve 100 more stable and reliable during operation.

[0075] In other embodiments, only the first magnet 131 or only the second magnet 132 may be configured as an annular strip structure, or the first magnet 131 and the second magnet 132 may be configured as other structural forms, as long as the magnetic restoring force on the pressure plate 12 is generated.

[0076] like Figure 1-Figure 3 As shown, the flow regulating valve 100 further includes a piezoelectric ceramic 14, which is sandwiched between the pressure plate 12 and the first end 111 of the housing 11, and is used to collect the voltage difference at both ends of the piezoelectric ceramic 14 along the flow direction of the fluid using the piezoelectric effect.

[0077] The piezoelectric effect is that the piezoelectric ceramic 14 is polarized by the thrust of the fluid, and bound charges with opposite signs appear on the surfaces of both ends of the piezoelectric ceramic 14. The charge density is proportional to the external mechanical force. This phenomenon is called the positive piezoelectric effect.

[0078] Therefore, by collecting the voltage difference across the piezoelectric ceramic 14 , the change in fluid pressure can be known after analysis, so that accurate monitoring and feedback control of the flow rate can be achieved, further improving the stability and accuracy of the flow regulating valve 100 .

[0079] At the same time, if Figure 2-Figure 3 As shown, a receiving groove 121 for receiving the piezoelectric ceramic 14 is provided at the first end 111 of the pressure plate 12 facing the housing 11 , and the cross-sectional dimension of the receiving groove 121 is matched with the cross-sectional dimension of the piezoelectric ceramic 14 .

[0080] Through the design of the receiving groove 121, the piezoelectric ceramic 14 can be stably fixed between the pressure plate 12 and the housing 11. The cross-sectional dimensions of the receiving groove 121 are adapted to the cross-sectional dimensions of the piezoelectric ceramic 14, ensuring close contact between the piezoelectric ceramic 14 and the receiving groove 121 to prevent displacement or loosening during operation. In this way, the piezoelectric ceramic 14 can accurately sense the pressure changes of the fluid flow and generate a corresponding voltage difference.

[0081] In addition, the piezoelectric ceramic 14 is fixedly connected to the pressure plate 12. Preferably, the piezoelectric ceramic 14 is fixedly connected to the pressure plate 12 by silicone adhesive.

[0082] In this embodiment, this structural form is adopted. Silicone glue is an adhesive with excellent bonding properties and high temperature resistance. By using silicone glue to fix the piezoelectric ceramic 14 and the pressure plate 12, a stable connection can be achieved, and silicone glue can provide strong bonding force to ensure a firm connection between the piezoelectric ceramic 14 and the pressure plate 12 to avoid loosening or displacement during operation. Secondly, silicone glue also has good vibration and impact absorption performance. During the operation of the flow regulating valve 100, fluid vibration and impact may be generated. By using silicone glue to bond the piezoelectric ceramic 14 and the pressure plate 12, the impact of vibration and impact on the connection can be reduced, and the stability of the connection can be maintained.

[0083] In other embodiments, other fixed connection methods may be used to fixedly connect the piezoelectric ceramic 14 and the pressure plate 12 , as long as the two can move synchronously.

[0084] Preferably, a liquid inlet 113 is provided at the first end 111 of the shell 11, and a liquid outlet 114 is provided at the second end 112 of the shell 11. In the present embodiment, the pressure plate 12 is a conical structure, and the end of the pressure plate 12 with the largest cross-sectional dimension is arranged toward the liquid inlet 113, and the end of the pressure plate 12 with the smallest cross-sectional dimension is arranged toward the liquid outlet 114, and a gap is provided between the circumferential side wall surface of the pressure plate 12 and the inner wall surface of the shell 11 for fluid circulation.

[0085] The cross-sectional dimension of the liquid outlet 114 is not greater than the minimum cross-sectional dimension of the pressure plate 12 .

[0086] In this embodiment, the fluid can flow smoothly between the pressure plate 12 and the housing 11 through the truncated cone structure of the pressure plate 12 and the gap between the pressure plate 12 and the inner wall of the housing 11. The arrangement of the liquid inlet 113 and the liquid outlet 114 and the change in the cross-sectional size of the pressure plate 12 help maintain the smooth flow of the fluid, avoid or reduce the blockage or obstruction of the fluid, and ensure stable flow control.

[0087] At the same time, the end of the pressure plate 12 with the largest cross-sectional dimension is arranged toward the liquid inlet 113, while the end with the smallest cross-sectional dimension is arranged toward the liquid outlet 114. Such a design can produce a change in flow rate and increase the speed difference of the fluid passing through the pressure plate 12. Due to the existence of the speed difference, the piezoelectric ceramic 14 or the pressure plate 12 can more sensitively sense the pressure change of the fluid, thereby improving the accuracy of flow control.

[0088] Moreover, the cross-sectional dimension of the piezoelectric ceramic 14 is smaller than the cross-sectional dimension of the liquid inlet 113. By designing the cross-sectional dimension of the piezoelectric ceramic 14 and / or the pressure plate 12 to be smaller than the cross-sectional dimension of the liquid inlet 113, the smooth flow of the fluid channel can be ensured while also achieving a steady flow effect.

[0089] In summary, in the flow stabilizing valve 100 of this embodiment, there are at least the following three motion states of the pressure plate 12:

[0090] When the fluid pressure does not reach the steady flow point, the pressure plate 12 is located at the initial position of the pressure plate 12;

[0091] When the fluid pressure reaches the steady flow point and approaches the dangerous point, the piezoelectric ceramic 14 drives the pressure plate 12 to start moving along the flow direction of the fluid under the push of the fluid, and the pressure plate 12 leaves the initial position of the pressure plate 12 and approaches the limit position of the pressure plate 12, so as to gradually reduce the size of the liquid outlet 114 between the pressure plate 12 and the second end 112 of the shell 11;

[0092] When the fluid pressure reaches the danger point, the piezoelectric ceramic 14 drives the pressure plate 12 to be located at the limit position of the pressure plate 12, and the pressure plate 12 and the second end 112 of the shell 11 fit together to limit the size of the liquid outlet 114 between the pressure plate 12 and the second end 112 of the shell 11.

[0093] In the present technical solution, this structural form is adopted, and the pressure plate 12 can be pushed by the fluid to leave its initial position and move to different positions inside the shell 11 along the flow direction of the fluid, thereby producing different working states of the flow stabilizing valve 100. The flow stabilizing valve 100 can realize precise control of the flow rate according to different working states, thereby protecting the pipeline and equipment from excessive flow shock and damage, ensuring stable and safe flow control, and improving the user experience and comfort.

[0094] Among them, the initial position of the pressure plate 12 refers to: the pressure plate 12 is pushed by the magnetic action of the magnetic component 13 to push the piezoelectric ceramic 14 so that the side surface of the piezoelectric ceramic 14 facing the first end 111 of the shell 11 is in contact with the inner wall surface of the shell 11. The contact here means that there is no gap or a tiny gap between the surface of the piezoelectric ceramic 14 and the inner wall surface of the shell 11.

[0095] The limit position of the pressure plate 12 means that the pressure plate 12 is pushed by the fluid so that the side surface of the pressure plate 12 facing the second end 112 of the shell 11 fits with the inner wall surface of the shell 11. The fit here means that there is no gap or a tiny gap between the surface of the pressure plate 12 and the inner wall surface of the shell 11.

[0096] [Example 2]

[0097] This embodiment discloses a water heater, which adopts the steady flow valve 100 of Embodiment 1.

[0098] In this embodiment, the water heater using the flow-stabilizing valve 100 of this structure can stably control the flow of hot water according to the set requirements, ensuring that a stable flow of hot water can be obtained when the water heater is used. This can improve the comfort and convenience of using hot water. At the same time, the flow-stabilizing valve 100 has a stable flow control capability and can prevent sudden changes in water temperature. When the water inlet temperature or water supply pressure of the water heater changes, the flow-stabilizing valve 100 can automatically adjust the flow of hot water to maintain a stable water temperature output, thereby preventing users from being affected by sudden changes in water temperature during use.

[0099] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A flow-stabilizing valve, characterized in that: It includes: A shell, on which a first end and a second end are arranged opposite to each other along a flow direction of the fluid; A pressure plate, disposed inside the shell and located at a first end of the shell; A magnetic assembly is disposed inside the shell and between the second end of the shell and the pressure plate, and at least a portion of the magnetic assembly is connected to the pressure plate; Wherein, the pressure plate can be pushed by the fluid to move from the initial position along the flow direction of the fluid toward the second end of the shell, and can move back to the initial position along the opposite direction of the fluid flow under the action of the magnetic restoring force of the magnetic component.

2. The flow control valve according to claim 1, characterized in that: When the fluid pressure does not reach the steady flow point, the pressure plate is located at the initial position of the pressure plate; When the fluid pressure reaches the steady flow point and approaches the dangerous point, the pressure plate starts to move along the flow direction of the fluid under the push of the fluid, and leaves the initial position of the pressure plate and approaches the limit position of the pressure plate, so as to gradually reduce the size of the liquid outlet between the pressure plate and the second end of the shell; When the fluid pressure reaches a dangerous point, the pressure plate is located at a limit position of the pressure plate, and the pressure plate and the second end of the shell are fitted together to limit the size of the liquid outlet between the pressure plate and the second end of the shell.

3. The flow regulating valve according to claim 1, characterized in that: The magnetic assembly includes a first magnet connected to the pressure plate and located at the second end of the pressure plate facing the shell, and a second magnet opposite to the first magnet and arranged on the inner wall surface of the second end of the shell, the first magnet and the second magnet have a mutually repelling force.

4. The flow regulating valve according to claim 3, characterized in that: The first magnet and / or the second magnet is an annular bar structure.

5. The flow regulating valve according to claim 1, characterized in that: The flow stabilizing valve further includes a piezoelectric ceramic sandwiched between the pressure plate and the first end of the shell, which is used to collect the voltage difference at both ends of the piezoelectric ceramic along the flow direction of the fluid by using the piezoelectric effect.

6. The flow regulating valve according to claim 5, characterized in that: A receiving groove for receiving the piezoelectric ceramic is provided at the first end of the pressure plate facing the housing, and the cross-sectional dimension of the receiving groove is matched with the cross-sectional dimension of the piezoelectric ceramic.

7. The flow regulating valve according to claim 5, characterized in that: The piezoelectric ceramic and the pressure plate are fixedly connected; Wherein, the piezoelectric ceramic is fixedly connected to the pressure plate by silicone adhesive.

8. The flow regulating valve according to claim 1 or 5, characterized in that: The flow stabilizing valve further comprises piezoelectric ceramics. A liquid inlet is provided at the first end of the housing. The cross-sectional dimensions of the piezoelectric ceramics and / or the pressure plate are smaller than the cross-sectional dimensions of the liquid inlet.

9. The flow regulating valve according to claim 1, characterized in that: A liquid inlet is provided at the first end of the shell, and a liquid outlet is provided at the second end of the shell; The pressure plate is a truncated cone structure, the end of the pressure plate with the largest cross-sectional dimension is arranged toward the liquid inlet, the end of the pressure plate with the smallest cross-sectional dimension is arranged toward the liquid outlet, and a gap is provided between the peripheral side wall surface of the pressure plate and the inner wall surface of the shell for fluid circulation; The cross-sectional dimension of the liquid outlet is not greater than the minimum cross-sectional dimension of the pressure plate.

10. A water heater, characterized in that: The water heater comprises a flow regulating valve as claimed in any one of claims 1 to 9.

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