Steady flow valve and water heater comprising same

Abstract

The utility model provides a steady flow valve and a water heater comprising the same, the steady flow valve comprises: a housing, a containing cavity with an opening is formed in the housing, and the bottom wall of the containing cavity is provided with a water outlet; the valve element is arranged in the containing cavity, a cavity is formed between the valve element and the inner wall of the containing cavity, the valve element comprises a tubular part and a plate body which are connected, the plate body is arranged corresponding to the opening, the first end, close to the opening, of the tubular part is open to form a water inlet, and the second end, away from the opening, of the tubular part is closed in the axial direction; a water passing opening penetrating through the wall thickness of the tubular part is formed in the side wall of the tubular part, the valve element can be pushed by liquid to leave the initial position and move in the flowing direction of the liquid so as to reduce the overflowing area of the water passing opening, and the valve element can move back to the initial position in the direction opposite to the flowing direction of the liquid under the action of the first elastic structural body. The first end of the tubular part is closed, liquid flows through the water passing opening in the side wall, resonance of the valve element can be reduced, noise of the flow stabilizing valve is reduced, and user experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of gas-fired water heating, and in particular to a flow regulator valve and a water heater containing the same. Background Technology

[0002] The valve core of existing flow control valves is generally a tubular structure, with the center for water passage and the surrounding area relying on the balance port to maintain balance. The flow control effect is not good, and the valve core is prone to vibration, causing resonance and generating noise. At the same time, the noise generated by the water circuit is also relatively loud, affecting the user experience. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the valve core in the prior art that is prone to vibration, resonance and noise, and to provide a flow stabilizing valve and a water heater containing the same.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A flow regulating valve, comprising:

[0006] The housing has an open receiving cavity formed inside, and a water outlet is provided on the bottom wall of the receiving cavity;

[0007] A valve core is disposed within the accommodating cavity, and a cavity is formed between the valve core and the inner wall of the accommodating cavity. The valve core includes a connected tubular portion and a plate body. The plate body is disposed corresponding to the opening. The first end of the tubular portion near the opening is open to form a water inlet, and the second end of the tubular portion axially away from the opening is closed. A water passage through its wall thickness is provided on the side wall of the tubular portion. The valve core can be pushed away from the initial position by the liquid and move along the flow direction of the liquid to reduce the flow area of ​​the water passage. Under the action of the first elastic structure, it can move back to the initial position in the opposite direction of the liquid flow.

[0008] The flow stabilizing valve also includes a flow path, which passes through the inlet, the outlet, the cavity, and the outlet in sequence.

[0009] In this technical solution, the first end of the tubular section near the inlet is opened to form an inlet, while the second end of the tubular section away from the inlet along the axial direction is closed. A through-hole is provided on the side wall of the valve core, penetrating its wall thickness. After the liquid flows into the valve core from the inlet, it flows out of the valve core from the through-hole on the side wall, instead of flowing out from the second end of the tubular section. This ensures that the flow path of the liquid in the tubular section is from the inlet at the first end to the through-hole on the side wall, thus entering the cavity. During this process, the flow direction of the liquid is first along the axial direction of the valve core and then changes to radial outward flow along the valve core. This can effectively alleviate the vertical vibration of the valve core in its axial direction, reduce the resonance phenomenon of the valve core, and reduce the noise generated by the valve core. By placing the valve core in the bottom of the accommodating cavity, and providing an outlet on the bottom wall of the housing, the valve core can be pushed away from its initial position by the liquid and move along the direction of liquid flow to reduce the flow area of ​​the outlet. Under the action of the first elastic structure, it can move back to its initial position in the opposite direction of liquid flow. The valve core, the first elastic structure, and the housing form a flow stabilizing valve, and the flow path of the flow stabilizing valve is an inlet, an outlet, a cavity, and an outlet.

[0010] Preferably, along the direction of liquid flow, the flow area of ​​the cavity is larger than the flow area of ​​the water inlet.

[0011] In this technical solution, by setting the flow area of ​​the cavity to be larger than that of the water inlet, the water inlet and the cavity form a sound-amplifying cavity silencer. When the liquid flows from the water inlet into the cavity, the sound-amplifying cavity silencer can reduce the noise generated by the liquid flow. Moreover, the structure of this expansion silencer is relatively simple and easy to manufacture and use.

[0012] Preferably, along the flow direction of the liquid, the flow area of ​​the cavity is larger than the flow area of ​​the water outlet, and the flow area of ​​the cavity is larger than the flow area of ​​the water outlet.

[0013] In this technical solution, by setting the flow area of ​​the cavity to be greater than that of the water outlet, the water outlet and the cavity form a sound-amplifying cavity silencer. When the liquid flows from the water outlet into the cavity, the sound-amplifying cavity silencer can reduce the noise generated by the liquid flow. Since the flow area of ​​the cavity is greater than that of the water outlet, that is, the flow area of ​​the water outlet is smaller than that of the cavity, the water outlet can accelerate the liquid flowing out of the valve core.

[0014] Preferably, the first elastic structure is a helical spring.

[0015] In this technical solution, by setting the first elastic structure as a helical spring, the structure is simple and the existing products have various specifications, which can be directly selected.

[0016] Preferably, the helical spring is coaxially arranged with the valve core to divide the cavity into a first cavity and a second cavity distributed from the inside to the outside in a radial direction, and the gap of the spring forms a valve port; the flow path passes through the water inlet, the first cavity, the valve port, the second cavity and the water outlet in sequence.

[0017] In this technical solution, a spring is installed in the cavity between the valve core and the housing. The gap of the spring forms the valve port. When the valve core moves, the spring also changes to different compression lengths. The size of the valve port can change with the valve core, which also has a secondary regulation effect on the flow rate of the liquid, thus improving the flow stabilization performance of the flow stabilizing valve.

[0018] Preferably, along the direction of liquid flow, the flow area of ​​the first cavity is larger than the flow area of ​​the water inlet.

[0019] In this technical solution, by setting the flow area of ​​the first cavity to be larger than the flow area of ​​the water inlet, the water inlet and the first cavity form a sound amplification cavity silencer. When the liquid flows from the water inlet into the first cavity, the sound amplification cavity silencer can reduce the noise generated by the liquid flow.

[0020] Preferably, along the direction of liquid flow, the flow area of ​​the first cavity is larger than the flow area of ​​the water inlet, and the flow area of ​​the first cavity is larger than the flow area of ​​the valve port.

[0021] In this technical solution, by setting the flow area of ​​the first cavity to be larger than the flow area of ​​the water inlet, the water inlet and the first cavity form a sound amplification cavity silencer. When the liquid flows from the water inlet into the first cavity, the sound amplification cavity silencer can reduce the noise generated by the liquid flow. The area of ​​the first cavity is larger than the flow area of ​​the valve port, that is, the flow area of ​​the valve port is smaller than the flow area of ​​the first cavity. The valve port can accelerate the liquid flowing out of the first cavity.

[0022] Preferably, along the direction of liquid flow, the flow area of ​​the second cavity is larger than the flow area of ​​the valve port.

[0023] In this technical solution, by setting the flow area of ​​the second cavity to be larger than that of the valve port, the valve port and the second cavity form a sound amplification cavity silencer. When liquid flows from the valve port into the second cavity, the sound amplification cavity silencer can reduce the noise generated by the liquid flow.

[0024] Preferably, along the direction of liquid flow, the flow area of ​​the second cavity is larger than the flow area of ​​the valve port, and the flow area of ​​the second cavity is larger than the flow area of ​​the outlet.

[0025] In this technical solution, by setting the flow area of ​​the second cavity to be greater than that of the valve port, the valve port and the second cavity form a sound amplification cavity silencer. When liquid flows from the valve port into the second cavity, the sound amplification cavity silencer can reduce the noise generated by the liquid flow. Since the flow area of ​​the second cavity is greater than that of the valve port, that is, the flow area of ​​the valve port is smaller than that of the second cavity, the valve port can accelerate the liquid flowing out of the second cavity.

[0026] Preferably, the two ends of the first elastic structure abut against the bottom wall of the plate and the accommodating cavity, respectively.

[0027] This technical solution provides a specific arrangement of the first elastic structure.

[0028] Preferably, the second end of the tubular portion is inserted into the bottom wall of the accommodating cavity.

[0029] In this technical solution, by inserting the second end of the tubular part into the bottom wall, when the tubular part moves downward, the length of the tubular part inserted into the bottom wall increases, and the flow area of ​​the water inlet decreases accordingly; conversely, the flow area of ​​the water inlet increases. This change in the flow area of ​​the water inlet through the relative movement of the tubular part and the bottom wall makes the overall structure of the flow control valve simpler. Simultaneously, by inserting the tubular part into the bottom wall, the bottom wall provides circumferential restraint to the tubular part, causing the valve core to sway.

[0030] Preferably, the width of the water inlet gradually increases along the direction of liquid flow.

[0031] In this technical solution, by setting the width of the water inlet to gradually increase along the direction of liquid flow, the larger the water pressure, the faster the communication area between the water inlet and the cavity shrinks, which is beneficial to improving the flow stabilization performance of the flow stabilizing valve.

[0032] Preferably, a sealing element is provided on the outer peripheral wall of the plate, and the sealing element is in contact with the inner wall of the housing.

[0033] In this technical solution, by setting a sealing element on the outer periphery of the plate to fit the inner wall of the shell, the sealing performance at the contact point between the plate and the shell is improved, and water leakage is prevented.

[0034] Preferably, the flow stabilizing valve further includes a pressure sampling device, which is disposed in a mounting groove on the bottom wall of the accommodating cavity. The pressure sampling device abuts against the second end of the tubular portion and is used to collect the pressure value received by the valve core when it is in different positions.

[0035] In this technical solution, a pressure sampling device is installed in the flow stabilizing valve. The pressure sampling device abuts against the closed end of the valve core to collect the pressure value when the valve core is in different positions. The collected pressure value has a guiding role in the adjustment of other components in the entire flow path.

[0036] Preferably, the pressure-collecting device includes a second elastic structure and a piezoelectric module, wherein the tubular portion, the second elastic structure, and the piezoelectric module abut against each other in sequence along the force direction of the piezoelectric module.

[0037] In this technical solution, a specific arrangement of a pressure sampling device is provided. The pressure sampling device includes a second elastic structure and a piezoelectric module. The second elastic structure allows the valve core to have room to move while changing the pressure value generated by the piezoelectric module.

[0038] A water heater comprising a flow regulator valve as described above.

[0039] In this technical solution, by installing the flow stabilizing valve as described above in the water heater, the noise generated during the process of liquid flowing into the water heater can be reduced, thereby improving the user experience.

[0040] The positive and progressive effects of this utility model are as follows:

[0041] This invention opens the first end of the tubular section near the inlet to form an inlet, while closing the second end of the tubular section axially away from the inlet. A through-hole is provided on the side wall of the valve core, penetrating its wall thickness. After the liquid flows into the valve core from the inlet, it flows out of the valve core from the through-hole on the side wall, instead of flowing out from the second end of the tubular section. This ensures that the flow path of the liquid in the tubular section is from the inlet at the first end to the through-hole on the side wall, thus entering the cavity. During this process, the flow direction of the liquid is first along the axial direction of the valve core and then changes to radial outward flow. This effectively alleviates the vertical vibration of the valve core in its axial direction, reduces the resonance phenomenon of the valve core, and reduces the noise generated by the valve core. By placing the valve core in the bottom of the accommodating cavity, and providing an outlet on the bottom wall of the housing, the valve core can be pushed away from its initial position by the liquid and move along the direction of liquid flow to reduce the flow area of ​​the outlet. Under the action of the first elastic structure, it can move back to its initial position in the opposite direction of liquid flow. The valve core, the first elastic structure, and the housing form a flow stabilizing valve, and the flow path of the flow stabilizing valve is an inlet, an outlet, a cavity, and an outlet. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the flow stabilizing valve according to a preferred embodiment of the present invention.

[0043] Figure 2 This is a schematic diagram of the shell structure of a preferred embodiment of the present invention (I).

[0044] Figure 3 This is a schematic diagram (II) of the shell structure of a preferred embodiment of the present invention.

[0045] Figure 4 This is a schematic diagram (I) of the valve core of a preferred embodiment of the present invention.

[0046] Figure 5 This is a schematic diagram (II) of the valve core structure of a preferred embodiment of the present invention.

[0047] Figure 6 This is a cross-sectional structural schematic diagram (I) of a preferred embodiment of the flow stabilizing valve of this utility model.

[0048] Figure 7 This is a cross-sectional structural schematic diagram (II) of a preferred embodiment of the flow stabilizing valve of this utility model.

[0049] Explanation of reference numerals in the attached figures:

[0050] Flow stabilizer 001

[0051] Casing 1

[0052] 101 Container

[0053] Outlet 102

[0054] Mounting slot 103

[0055] Valve core 2

[0056] Inlet 201

[0057] 202 water outlet

[0058] Tubular portion 21

[0059] Board 22

[0060] First elastic structure 3

[0061] Valve port 301

[0062] Cavity 4

[0063] First cavity 41

[0064] Second cavity 42

[0065] Seal 5

[0066] Pressure-collecting device 6

[0067] Second elastic structure 601

[0068] Piezoelectric module 602

[0069] Outlet 104 Detailed Implementation

[0070] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0071] Example 1

[0072] like Figures 1-7 As shown, this embodiment provides a flow regulating valve 001, which includes a housing 1, a valve core 2, and a first elastic structure 3, as shown. Figure 4 As shown, the valve core includes a tubular portion 21 and a plate 22. (As indicated...) Figure 1 , Figure 6 and Figure 7 As shown, a receiving cavity 101 with an opening is formed inside the housing 1, and a water outlet 102 is provided on the bottom wall of the receiving cavity 101. The valve core 2 is disposed inside the receiving cavity 101, and a cavity 4 is formed between the valve core 2 and the inner wall of the receiving cavity 101. The first end of the tubular portion 21 near the opening of the receiving cavity 101 is open to form a water inlet 201, while the second end of the tubular portion 21 away from the opening of the receiving cavity 101 is closed. A water passage 202 penetrating through its wall thickness is provided on the side wall of the tubular portion 21. The valve core 2 can be pushed away from the initial position by the liquid and move along the flow direction of the liquid to reduce the flow area of ​​the water passage 202. Furthermore, the valve core 2 can move in the opposite direction of the liquid flow under the action of the first elastic structure 3 to return to the initial position. The flow path of the flow stabilizing valve 001 passes through the inlet 201 of the valve core 2, the outlet 202 on the side wall of the tubular part 21, the cavity 4 between the valve core 2 and the housing 1, and the outlet 102 on the bottom wall of the housing 1 in sequence.

[0073] By opening the first end of the tubular portion 21 near the inlet 201 to form the inlet 201, and closing the second end of the tubular portion 21 away from the inlet 201, a through-hole 202 is provided on the side wall of the tubular portion 21, penetrating its wall thickness. After the liquid flows into the valve core 2 from the inlet 201, it flows out of the tubular portion 21 from the through-hole 202 on the side wall, instead of flowing out from the second end of the tubular portion 21 away from the inlet 201. This makes the flow path of the liquid in the valve core 2 from the inlet 201 at the first end of the tubular portion 21 to the through-hole 202 on the side wall and then into the cavity 4. In this process, the flow direction of the liquid is first along the axial direction of the valve core 2 and then changes to flow radially outward along the valve core 2. This can effectively alleviate the up-and-down shaking of the valve core 2 in its axial direction, reduce the resonance phenomenon of the valve core 2, and reduce the noise generated by the valve core 2. By placing the valve core 2 in the accommodating cavity 101 of the housing 1, and the bottom wall of the housing 1 is also provided with an outlet 102, the valve core 2 can be pushed away from the initial position by the liquid and move along the flow direction of the liquid to reduce the flow area of ​​the outlet 202, and can move back to the initial position in the opposite direction of the liquid flow under the action of the first elastic structure 3. The valve core 2, the first elastic structure 3 and the housing 1 form a flow stabilizing valve 001. The flow path of the flow stabilizing valve 001 is the inlet 201, the outlet 202, the cavity 4 and the outlet 102.

[0074] In other words, in this embodiment, such as Figure 6 The arrows shown indicate the flow path of the flow regulator valve. The liquid flows sequentially in the flow regulator valve along the directions indicated by a, b, and c. The flow regulation principle of this flow regulator valve can be summarized as follows: the water flow direction is as follows... Figure 6 As shown by the middle arrow, liquid flows into the tubular section 21 from the inlet 201, flows out through the outlet 202, and finally flows out of the flow stabilizing valve from the outlet 102. When the water pressure increases, the valve core 2 moves downward under pressure. The elastic force of the first elastic structure interacts with the downward pressure of the increased water pressure, reducing the flow rate and achieving a flow stabilizing effect. Conversely, the valve core 2 moves upward, increasing the flow rate.

[0075] Specifically, in this embodiment, the cavity formed by the valve core 2 and the inner wall of the housing 1 is a cavity formed by the surface of the tubular portion 21 facing the housing 1, the lower surface of the plate 22, and the inner wall of the housing 1.

[0076] Specifically, in this embodiment, the flow area of ​​cavity 4 is larger than that of inlet 202 along the direction of liquid flow. By setting the flow area of ​​cavity 4 to be larger than that of inlet 202, inlet 202 and air form a sound-amplifying cavity silencer with a flow area that gradually increases. When liquid flows from inlet 202 with a smaller flow area to cavity 4 with a relatively larger flow area, the sound-amplifying cavity silencer can reduce the noise generated by the liquid flow. Moreover, the structure of this expansion silencer is relatively simple, easy to manufacture and use.

[0077] In this embodiment, the flow area of ​​cavity 4 is not only larger than that of water inlet 202, but also larger than that of outlet 102. By making the flow area of ​​cavity 4 larger than both the flow area of ​​water inlet 202 and the flow area of ​​outlet 102, that is, the flow area of ​​outlet 102 is smaller than that of cavity 4, the flow velocity of the liquid will decrease when it flows from water inlet 202 into cavity 4. The smaller flow area of ​​outlet 102 compared to cavity 4 allows outlet 102 to accelerate the liquid flowing out of valve core 2.

[0078] In this embodiment, the first elastic structure 3 is a helical spring. By setting the first elastic structure 3 as a helical spring, the structure is simple and existing products have various specifications that can be directly selected.

[0079] like Figure 7 As shown, specifically in this embodiment, the helical spring is coaxially arranged with the valve core 2. The helical spring divides the cavity 4 into a first cavity 41 and a second cavity 42 distributed radially from the inside to the outside. The gap of the spring forms the valve port 301 through which the liquid must flow. The liquid flow path passes sequentially through the water inlet 202, the first cavity 41, the valve port 301, the second cavity 42, and the water outlet 102. By setting the spring in the cavity 4 between the valve core 2 and the housing 1, the gap of the spring forms the valve port 301. When the valve core 2 moves, the spring also changes to different compression lengths. The size of the valve port 301 can change with the valve core 2, which also has a secondary regulating effect on the liquid flow rate, improving the flow stabilization performance of the flow stabilizing valve 001.

[0080] In this embodiment, in order to retain the structure of the amplification cavity silencer while the spring has a secondary adjustment function, the flow area of ​​the first cavity 41 is set to be larger than the flow area of ​​the water inlet 202, so that the water inlet 202 and the first cavity 41 form the amplification cavity silencer. At the same time, the flow area of ​​the first cavity 41 is also set to be larger than the flow area of ​​the valve port 301, that is, the flow area of ​​the valve port 301 is smaller than the flow area of ​​the first cavity 41, and the valve port 301 can accelerate the liquid flowing out of the first cavity 41.

[0081] Meanwhile, in this embodiment, the flow area of ​​the second cavity 42 is larger than that of the valve port 301. By setting the flow area of ​​the second cavity 42 to be larger than that of the valve port 301, the valve port 301 and the second cavity 42 form a sound-amplifying cavity silencer. When liquid flows from the valve port 301 into the second cavity 42, the sound-amplifying cavity silencer can reduce the noise generated by the liquid flow. The water outlet 202 and the first cavity 41 form a sound-amplifying cavity silencer, and the valve port 301 and the second cavity 42 also form a sound-amplifying cavity silencer, so that the flow stabilizing valve 001 has two sound-amplifying cavity silencers, and its noise reduction effect is better.

[0082] In this embodiment, the flow area of ​​the second cavity 42 is also set to be greater than the flow area of ​​the outlet 102, so as to accelerate the liquid flowing out of the flow stabilizing valve 001 from the second cavity 42 through the outlet 102.

[0083] like Figure 4 , Figure 5 and Figure 6 As shown, in this embodiment, the valve core 2 includes a tubular portion 21 and a plate 22 connected to each other. The water inlet 202 is provided on the tubular portion 21, and the plate 22 is provided corresponding to the opening. The two ends of the first elastic structure 3 abut against the bottom wall of the accommodating cavity 101 and the plate 22, respectively.

[0084] Of course, in other embodiments, the first elastic structure 3 can also be connected by other methods in the prior art, as long as the first elastic structure 3 can be compressed as the valve core 2 moves in the direction of liquid flow, and the valve core 2 can return to its initial position in the opposite direction of liquid flow when the liquid pressure on the valve core 2 decreases.

[0085] In this embodiment, the second end of the tubular portion 21 is inserted into the bottom wall of the accommodating cavity 101. That is, a cavity capable of accommodating the tubular portion 21 is also provided on the bottom wall of the accommodating cavity 101. When the tubular portion 21 moves downward, the length of the tubular portion 21 inserted into the bottom wall increases, and the flow area of ​​the water outlet 202 decreases accordingly. Conversely, the flow area of ​​the water outlet 202 increases. In this way, the flow area of ​​the water outlet 202 is changed by the relative movement of the tubular portion 21 and the bottom wall, making the overall structure of the flow stabilizing valve simpler. At the same time, the bottom wall has a circumferential limiting effect on the tubular portion 21, which can prevent the valve core 2 from shaking.

[0086] In this embodiment, the width of the water inlet 202 gradually increases along the liquid flow direction. By setting the width of the water inlet 202 to gradually increase along the liquid flow direction, the larger the water pressure, the faster the communication area (flow area) between the water inlet 202 and the cavity 4 shrinks, which is beneficial to improving the flow stabilization performance of the flow stabilizing valve 001.

[0087] like Figure 4 and Figure 5 As shown, in this embodiment, there are specifically six water inlets 202, which are evenly distributed along the circumference of the tubular portion 21. Of course, in other embodiments, the number of water inlets can also be four, eight, ten, or other numbers of multiple water inlets 202, which are evenly distributed along the circumference of the tubular portion 21. By using multiple water inlets 202, and ensuring that these multiple water inlets are evenly distributed along the circumference of the tubular portion 21, the liquid flows out evenly along the circumference of the valve core 2, further reducing the vibration of the valve core 2.

[0088] Of course, in more embodiments, the number of water inlets 202 can also be set to only one.

[0089] Similarly, such as Figure 2 and Figure 3 As shown, there are 12 outlets 102, which are evenly distributed along the circumference of the housing 1. Of course, in other embodiments, the number of water inlets can also be set to 4, 8, 10, or other numbers of outlets, with the multiple outlets evenly distributed along the circumference of the housing 1. By setting multiple outlets 102 and evenly distributing the multiple water inlets 202 along the circumference of the housing 1, the flow rate of liquid flowing out of the flow stabilizing valve 001 is relatively uniform along the circumference of the flow stabilizing valve 001.

[0090] Of course, in more embodiments, the number of outlets 102 can also be set to only one.

[0091] like Figure 6 As shown, in this embodiment, a sealing element 5 is provided on the outer peripheral wall of the plate 22, and the sealing element 5 fits against the inner wall of the housing 1. Specifically, an annular groove is formed on the outer peripheral wall of the plate 22, and the sealing element 5 is disposed in the annular groove and protrudes relative to the outer peripheral wall of the plate 22, so that the sealing element 5 can be embedded in the plate 22. Utilizing the elasticity of the sealing element 5, the protruding part fits against the inner wall of the housing 1, improving the sealing performance at the contact point between the plate 22 and the housing 1 and preventing water leakage. Specifically, the sealing element is a rubber ring, but it is not limited to this and can also be other components with sealing functions.

[0092] like Figure 6As shown, in this embodiment, the flow stabilizing valve 001 further includes a pressure sampling device 6. The pressure sampling device 6 is disposed in a mounting groove 103 on the bottom wall of the accommodating cavity 101. The pressure sampling device 6 abuts against the closed end of the valve core 2. The pressure sampling device 6 is used to collect the pressure value experienced by the valve core 2 when it is in different positions. By providing the pressure sampling device 6 in the flow stabilizing valve 001, and by having the pressure sampling device 6 abut against the closed end of the valve core 2, the pressure value experienced by the valve core 2 when it is in different positions is collected. The collected pressure value has a guiding role in the adjustment of other components in the entire flow path.

[0093] Specifically, in this embodiment, the pressure sampling device 6 includes a second elastic structure 601 and a piezoelectric module 602. The valve core 2, the second elastic structure 601, and the piezoelectric module 602 abut against each other sequentially along the force direction of the piezoelectric module 602. The second elastic structure 601 allows the valve core 2 to have movement space while simultaneously changing the pressure value generated on the piezoelectric module 602. The valve core 2, the second elastic structure 601, and the piezoelectric module 602 abut against each other sequentially along the force direction of the piezoelectric module 602. The piezoelectric module 602 abuts against the bottom wall of the mounting groove 103. During the movement of the valve core 2, the piezoelectric module 602 does not shift, resulting in a more stable overall structure. Simultaneously, a cable outlet 104 is provided on the bottom wall of the accommodating cavity 101. This cable outlet 104 is used to connect the pressure sampling module to the outside world to achieve signal output. The pressure sampling principle of the pressure sampling device can be summarized as follows: when the water pressure increases, the valve core 2 moves down, and the second elastic structure is compressed and transmits the pressure to the piezoelectric module 602. The core component of the piezoelectric module 602 is PZT piezoelectric material, which has a piezoelectric effect and can output different voltages under different surface pressures. The pressure difference can be calculated using the voltage difference.

[0094] In this embodiment, the second elastic structure 601 is an elastic pad. The piezoelectric module 602 is a commercially available product.

[0095] This embodiment also provides a water heater that includes the flow regulating valve 001 described above. By installing the flow regulating valve 001 as described above in the water heater, the noise generated during the liquid flow into the water heater can be reduced, thus improving the user experience.

[0096] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model 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 this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A flow regulating valve, characterized in that, It includes: The housing has an open receiving cavity formed inside, and a water outlet is provided on the bottom wall of the receiving cavity; A valve core is disposed within the accommodating cavity, and a cavity is formed between the valve core and the inner wall of the accommodating cavity. The valve core includes a connected tubular portion and a plate body. The plate body is disposed corresponding to the opening. The first end of the tubular portion near the opening is open to form a water inlet, and the second end of the tubular portion axially away from the opening is closed. A water passage through its wall thickness is provided on the side wall of the tubular portion. The valve core can be pushed away from the initial position by the liquid and move along the flow direction of the liquid to reduce the flow area of ​​the water passage. Under the action of the first elastic structure, it can move back to the initial position in the opposite direction of the liquid flow. The flow stabilizing valve also includes a flow path, which passes through the inlet, the outlet, the cavity, and the outlet in sequence.

2. The flow regulating valve as described in claim 1, characterized in that, Along the direction of liquid flow, the flow area of ​​the cavity is greater than the flow area of ​​the inlet; or, along the direction of liquid flow, the flow area of ​​the cavity is greater than the flow area of ​​the inlet, and the flow area of ​​the cavity is greater than the flow area of ​​the outlet.

3. The flow regulating valve as described in claim 1, characterized in that, The first elastic structure is a helical spring; and / or, the helical spring is coaxially arranged with the valve core to divide the cavity into a first cavity and a second cavity distributed from the inside to the outside in a radial direction, and the gap of the spring forms a valve port; The flow path passes sequentially through the water inlet, the first cavity, the valve port, the second cavity, and the water outlet.

4. The flow regulating valve as described in claim 3, characterized in that, Along the direction of liquid flow, the flow area of ​​the first cavity is greater than the flow area of ​​the water inlet; or, along the direction of liquid flow, the flow area of ​​the first cavity is greater than the flow area of ​​the water inlet, and the flow area of ​​the first cavity is greater than the flow area of ​​the valve port.

5. The flow regulating valve as described in claim 3, characterized in that, Along the direction of liquid flow, the flow area of ​​the second cavity is greater than the flow area of ​​the valve port; or, along the direction of liquid flow, the flow area of ​​the second cavity is greater than the flow area of ​​the valve port, and the flow area of ​​the second cavity is greater than the flow area of ​​the outlet.

6. The flow regulating valve as described in claim 1, characterized in that, The two ends of the first elastic structure abut against the bottom wall of the plate and the accommodating cavity, respectively; and / or, One closed end of the tubular portion is inserted into the bottom wall of the accommodating cavity.

7. The flow regulating valve as described in claim 6, characterized in that, The width of the inlet gradually increases along the direction of liquid flow; And / or, a sealing element is provided on the outer peripheral wall of the plate, and the sealing element is in contact with the inner wall of the housing.

8. The flow regulating valve according to any one of claims 1-7, characterized in that, The flow stabilizing valve also includes a pressure sampling device, which is installed in a mounting groove on the bottom wall of the accommodating cavity. The pressure sampling device abuts against the second end of the tubular part and is used to collect the pressure value received by the valve core when it is in different positions.

9. The flow regulating valve as described in claim 8, characterized in that, The pressure-collecting device includes a second elastic structure and a piezoelectric module, with the tubular portion, the second elastic structure, and the piezoelectric module sequentially abutting against each other along the force direction of the piezoelectric module.

10. A water heater, characterized in that, The water heater includes a flow regulating valve as described in any one of claims 1-9.

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