Steady flow valve and water heater

Abstract

The application discloses a steady flow valve and a water heater. The first valve core and the second valve core of the steady flow valve are sequentially arranged in the inside of the shell along the flow direction of the liquid. When the liquid pressure is below the preset pressure, the limiting part is connected with the second valve core and is used for limiting the position of the second valve core in the flow direction of the liquid. The first valve core moves in the inside of the shell under the action of the liquid pressure. When the liquid pressure is above the preset pressure, the limiting part is separated from the second valve core, and the second valve core moves in the flow direction of the liquid to block the outlet. According to the scheme, when the liquid is below the preset pressure, the flow area of the throttling opening is adjusted through the movement of the first valve core, so that the water pressure is stable. When the liquid is above the preset pressure, the second valve core can block the outlet, so that the parts downstream of the steady pressure valve are prevented from being cracked due to the excessive water pressure, and the parts downstream of the steady pressure valve are prevented from being frozen and cracked due to the excessively low temperature, and the steady pressure valve is still in the water passing state.

Description

TECHNICAL FIELD

[0001] The present application relates to a steady flow valve and a water heater. BACKGROUND

[0002] For the users of the water heater, the water flow at home is unstable, and if the water flow fluctuates or the pressure is too large, it will bring a bad feeling, such as the water flow fluctuation will cause the hot water outlet of the water heater to be hot and cold. In the prior art, a steady flow valve can be placed at the water inlet end to ensure normal water demand, even if the water flow fluctuates beyond the normal water demand, it will be stabilized under the action of the steady flow valve, and the fluctuation condition will not occur. However, the steady flow valve in the prior art may cause the parts to crack when the water pressure is too large, or the back end to crack when the temperature is too low to continue to water. SUMMARY

[0003] The technical problem to be solved by the present application is to overcome the defects that the steady flow valve in the prior art is prone to crack when the water pressure is too large and is prone to freeze crack when the temperature is too low, and to provide a steady flow valve and a water heater.

[0004] The present application solves the above technical problems by the following technical scheme:

[0005] A steady flow valve, the steady flow valve comprising a housing, a first valve core, a second valve core and a limiting part, the housing having a liquid inlet and a liquid outlet, liquid flowing into the liquid inlet and flowing out of the liquid outlet; the first valve core and the second valve core are sequentially arranged in the interior of the housing along the flow direction of the liquid,

[0006] When the liquid pressure is below a preset pressure, the limiting part is connected with the second valve core and is used to limit the position of the second valve core in the flow direction of the liquid; the first valve core moves in the interior of the housing under the action of the pressure of the liquid;

[0007] When the liquid pressure is above the preset pressure, the limiting part is separated from the second valve core, and the second valve core moves in the flow direction of the liquid to block the liquid outlet.

[0008] In the present application, the first valve core can move with the pressure of the liquid, so that when the liquid is below the preset pressure, the limiting part can limit the movement of the second valve core, and the flow area of the throttling port can be adjusted by the movement of the first valve core, so that the water pressure is stable. When the liquid is above the preset pressure, the limiting part can release the second valve core, so that the second valve core can block the liquid outlet, avoiding the condition that the parts downstream of the pressure stabilizing valve crack when the water pressure is too large, and the parts downstream of the pressure stabilizing valve crack when the temperature is too low, and the pressure stabilizing valve still waters.

[0009] Preferably, the steady flow valve further comprises a matching part, which is connected with the first valve core and moves with the first valve core;

[0010] When the liquid pressure is above the preset pressure, the matching part contacts the limiting part and makes the limiting part disengage from the second valve core, so that the second valve core blocks the liquid outlet.

[0011] In this solution, the first valve core itself serves as a component for adjusting the flow area of the throttling opening, and moves correspondingly with the change of water pressure. The matching part moves with the first valve core, so that when the liquid pressure is above the preset pressure, the matching part is driven by the first valve core to move to a position where the second valve core is disengaged, so that the second valve core can block the liquid outlet, avoiding excessive water pressure flowing to the downstream of the steady flow valve and causing the cracking of downstream components. Thus, the movement of the first valve core realizes pressure stabilization below the preset pressure, and the second valve core blocks the liquid outlet above the preset pressure.

[0012] Preferably, the limiting part is arranged in a direction having an angle with the flow direction of the liquid, and the limiting end of the limiting part extends towards the second valve core for connection with the second valve core.

[0013] At least part of the matching part extends in a direction parallel to the flow direction of the liquid, the matching part moves with the first valve core, the extending end of the matching part is close to and gradually extends into the limiting part, and the limiting part moves away from the second valve core.

[0014] In this solution, the limiting part can limit the position of the second valve core. The matching part can move with the first valve core along the flow direction of the liquid, gradually approach the limiting part arranged above and drive the limiting part away from the second valve core until the second valve core is disengaged. This arrangement has a simple structure and can make the operation process more reliable.

[0015] Preferably, the limiting part comprises a body and a limiting end, the limiting end is arranged at one end of the body close to the second valve core, and the limiting end is provided with a limiting groove.

[0016] The body is provided with a matching groove, which is used to contact the extending end of the matching part.

[0017] In this solution, the limiting groove can limit the second valve core, and also facilitate the disengagement of the second valve core during the movement of the limiting part away from the second valve core.

[0018] Preferably, the extending end of the matching part has a first inclined surface, the matching groove has a second inclined surface, the first inclined surface and the second inclined surface match each other, and the first inclined surface and the second inclined surface are both inclined towards the first valve core and the second valve core.

[0019] In the present solution, the matching part and the limiting part are in contact through the inclined surfaces, and during the movement of the matching part towards the limiting part, the limiting part can be gradually moved away from the second valve core under the pushing of the matching part by inclining the first inclined surface and the second inclined surface both towards the first valve core and the second valve core, which is simple and reliable in action and can gradually move the limiting part away from the second valve core, so that the limiting part can be quickly and accurately separated from the second valve core when the liquid pressure reaches the preset pressure.

[0020] Preferably, the flow stabilizing valve further comprises a first elastic member, the first elastic member is arranged on the side of the body away from the second valve core, and the two ends of the first elastic member are connected with the body and the shell respectively, and the first elastic member is used to provide a force for abutting the limiting part against the second valve core.

[0021] In the present solution, the first elastic member and its arrangement can reliably limit the second valve core when the limiting part limits the second valve core, avoiding the limitation failure caused by the movement of the limiting part due to water flow fluctuation and other factors.

[0022] Preferably, the limiting groove has at least one groove wall in the direction having an included angle with the flow direction of the liquid, and the groove wall is used to abut against the second valve core.

[0023] In the present solution, the at least one groove wall can limit the second valve core.

[0024] Preferably, the limiting part further comprises a reset rod, the reset rod is connected with the body and extends away from the body and out of the shell.

[0025] In the present solution, the reset rod can conveniently operate the position of the body, so that the body can move away from the second valve core, thereby leaving a corresponding space for the return movement of the second valve core.

[0026] Preferably, the matching part comprises a connecting rod and an unlocking rod, the connecting rod and the unlocking rod are connected and form an L-shaped member, the connecting rod is connected with the first valve core, the unlocking rod extends in a direction parallel to the flow direction of the liquid, and the extending end is the end of the unlocking rod.

[0027] In the scheme, the cooperation part is connected with the first valve core, and the cooperation part further has an unlocking rod moving along the liquid flow direction, the structure is simple, compact and convenient to manufacture, the movement of the first valve core can be stabilized below the preset pressure, and the movement of the first valve core is converted into the disengaging action of the second valve core above the preset pressure.

[0028] Preferably, the first valve core comprises a first valve body and an end wall, the end wall is connected with one end of the first valve body close to the liquid inlet, and is attached to the inner side wall of the shell.

[0029] The first valve body and the end wall are penetrated by a first flow hole along the axial direction of the first valve core; the hole diameter of the liquid inlet is larger than the hole diameter of the first flow hole, and is smaller than the diameter of the end wall.

[0030] In the scheme, the liquid can flow through the first flow hole, the contact area of the first valve core and the liquid can be increased through the end wall, and the liquid inlet, the first flow hole and the end wall have the above size relationship, so that the liquid can flow to the liquid outlet only in the first flow hole, or the liquid flow drives the first valve core to move to stabilize the pressure or block the liquid outlet.

[0031] Preferably, the cooperation part of the flow stabilizing valve is connected with the end wall of the first valve core.

[0032] In the scheme, the connection between the cooperation part and the first valve core is realized, and when the first valve core is pushed by the liquid, the liquid can also contact the cooperation part, so that the end wall of the first valve core and the cooperation part of the flow stabilizing valve, such as the connecting rod, can be pushed, so that the overall movement of the first valve core is more stable.

[0033] Preferably, the second valve core comprises a second valve body and a ring side wall, the ring side wall surrounds the outer side wall of the second valve body, and is attached to the inner side wall of the shell.

[0034] The second valve body is penetrated by a second flow hole along the axial direction of the second valve core; the second flow hole is communicated with the first flow hole.

[0035] In the scheme, the liquid can flow from the first valve core to the second valve core through the communication between the second flow hole and the first flow hole, and then flow out of the shell through the liquid outlet. By arranging the ring side wall, the limiting part can limit the movement of the second valve core, and the second valve core is attached to the inner side wall of the shell, which can guide the movement of the second valve core, so that the movement of the second valve core is more stable.

[0036] Preferably, one end of the first valve body close to the liquid outlet extends into the second valve body.

[0037] In the scheme, the second valve body is sleeved on the first valve body, when the second valve body moves, the first valve body can guide the movement of the second valve body. And when the second valve body does not move, the second valve body can also be attached to the inner side wall of the shell through the ring side wall, by sleeving on the first valve body, the second valve body is more stable, avoiding tilting and other conditions.

[0038] Preferably, the limiting groove of the limiting portion abuts against the ring side wall.

[0039] In the scheme, the limiting method is simple, easy to realize limiting, and also easy to detach.

[0040] Preferably, the shell comprises a first chamber and a second chamber, the second chamber is communicated with the first chamber along a direction having an angle with the flow direction of the liquid;

[0041] The first valve core and the second valve core are both arranged in the first chamber, and the liquid inlet and the liquid outlet are arranged at both ends of the first chamber; the limiting portion is arranged in the second chamber.

[0042] In the scheme, the above structure meets the requirements of the arrangement position of the first valve core, the second valve core and the limiting portion.

[0043] Preferably, the inner side wall of the first chamber is provided with an abutting wall, the abutting wall is arranged along a direction having an angle with the flow direction of the liquid; the first valve body passes through the abutting wall and extends into the second valve body;

[0044] The second elastic member is arranged between the end wall and the abutting wall, and the third elastic member is arranged between the ring side wall and the abutting wall.

[0045] In the scheme, by arranging the abutting wall, the first valve core and the second valve core can be arranged with corresponding elastic members between the shell, the second elastic member can improve the pressure stabilizing effect of the liquid, and the third elastic member can push the second valve core to block the liquid outlet.

[0046] Preferably, the side wall of the second chamber is provided with a first hole and a second hole, the first hole is arranged towards the matching part of the flow stabilizing valve, for the matching part to extend into the limiting portion; the second hole is used for the reset rod of the limiting portion to extend out of the second chamber;

[0047] Preferably, the shell further comprises a third chamber, the third chamber is communicated with the side wall of the first chamber, the connecting rod of the matching part is arranged in the third chamber, and the unlocking rod of the matching part passes through the third chamber and extends out of the third chamber.

[0048] Preferably, a throttling column is arranged at the liquid outlet of the first chamber, the throttling column extends along the flow direction of the liquid, and the space between the first valve core and the throttling column is a throttling opening; the first valve core moves inside the first chamber under the pressure of the liquid to change the flow area of the throttling opening.

[0049] Preferably, the liquid outlet is arranged on the side wall of the first chamber.

[0050] A water heater comprising the flow stabilizing valve as described above.

[0051] The positive progress effect of the present application is that the first valve core can move with the pressure of the liquid, so that when the liquid is below the preset pressure, the limiting portion can limit the movement of the second valve core, the flow area of the throttling opening can be adjusted by the movement of the first valve core, so that the water pressure is stable. When the liquid is above the preset pressure, the limiting portion can release the second valve core, so that the second valve core can block the liquid outlet, avoiding the condition that the pressure stabilizing valve or the parts downstream of the pressure stabilizing valve burst when the water pressure is too high, and the pressure stabilizing valve freezes when the temperature is too low. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 A structural schematic diagram of a flow stabilizing valve provided for an embodiment of the present application;

[0053] Figure 2 A sectional view of a flow stabilizing valve provided for an embodiment of the present application, wherein the flow stabilizing valve is in a state that the user has no water demand or the water flow is lower than the flow stabilizing point;

[0054] Figure 3 A sectional view of a flow stabilizing valve provided for an embodiment of the present application, wherein the water flow of the flow stabilizing valve is higher than the pressure stabilizing point fluctuation;

[0055] Figure 4 A sectional view of a flow stabilizing valve provided for an embodiment of the present application, wherein the water pressure of the flow stabilizing valve gradually increases to reach a dangerous point;

[0056] Figure 5 A sectional view of a flow stabilizing valve provided for an embodiment of the present application, wherein the flow stabilizing valve automatically closes the liquid outlet and closes the liquid inlet, at this time, in the state of no water pressure;

[0057] Figure 6 A structural schematic diagram of a first valve core and a matching portion in a flow stabilizing valve provided for an embodiment of the present application;

[0058] Figure 7 A structural schematic diagram of a limiting portion in a flow stabilizing valve provided for an embodiment of the present application;

[0059] Figure 8 A schematic diagram of a shell of a flow stabilizing valve provided for an embodiment of the present application;

[0060] Figure 9 for Figure 8 Sectional view at point AA;

[0061] Figure 10 for Figure 8 Sectional view at point BB.

[0062] Explanation of reference numerals in the attached figures

[0063] Flow control valve 1, housing 100, first chamber 110, abutment wall 111, first space 112, second space 113, radial inner wall 114, throttling column 115, first wall 116, second wall 117, second chamber 120, first hole 121, second hole 122, third hole 123, third chamber 130, connecting port 131, liquid inlet 101, liquid outlet 102, first valve core 200, first valve body 210, end wall 220, first flow hole 2 30, second valve core 300, second valve body 310, annular sidewall 320, second flow hole 330, limiting part 400, body 410, limiting groove 420, axial groove wall 421, radial groove wall 422, mating groove 430, second inclined surface 431, reset rod 450, mating part 500, connecting rod 510, unlocking rod 520, first inclined surface 521, first elastic element 610, second elastic element 620, third elastic element 630, liquid flow direction W. Detailed Implementation

[0064] 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.

[0065] This invention provides a flow stabilizing valve 1, such as... Figures 1-10 As shown, the flow control valve 1 includes a housing 100, a first valve core 200, a second valve core 300, and a limiting part 400. The housing 100 has an inlet 101 and an outlet 102, through which liquid flows in from the inlet 101 and out from the outlet 102. The first valve core 200 and the second valve core 300 are sequentially arranged inside the housing 100 along the liquid flow direction W.

[0066] When the liquid pressure is below the preset pressure, the limiting part 400 is connected to the second valve core 300 and is used to limit the position of the second valve core 300 in the liquid flow direction W; the first valve core 200 moves inside the housing 100 under the action of liquid pressure.

[0067] When the liquid pressure is above the preset pressure, the limiting part 400 disengages from the second valve core 300, and the second valve core 300 moves in the liquid flow direction W to block the liquid outlet 102.

[0068] The first valve core 200 can move according to the pressure of the liquid. When the liquid is below the preset pressure, the limiting part 400 can restrict the movement of the second valve core 300. The flow area of ​​the throttling port can be adjusted by the movement of the first valve core 200, thereby stabilizing the water pressure. When the liquid is above the preset pressure, the limiting part 400 can release the second valve core 300, so that the second valve core 300 can block the outlet 102. This prevents the components downstream of the pressure regulator from cracking when the water pressure is too high, and prevents the components downstream of the pressure regulator from freezing and cracking when the temperature is too low, while the pressure regulator continues to flow water. Specifically, when the temperature is too low, the components downstream of the pressure regulator freeze and crack, which will cause the water pressure in the pressure regulator 1 to fluctuate rapidly and the water pressure difference to be large. This solution can use this pressure difference to make the second valve core 300 block the outlet 102.

[0069] In other words, when the liquid pressure is below the preset pressure, the flow stabilizing valve 1 plays a role in stabilizing the flow so that the liquid at the outlet 102 can be kept within a certain pressure range; when the liquid pressure is above the preset pressure, the flow stabilizing valve 1 plays a role in cutting off the flow.

[0070] The preset pressure is the pressure corresponding to the danger point, meaning that when the liquid pressure exceeds this danger point pressure, the downstream components of the pressure regulator are at risk of bursting. Specifically, it can be the minimum withstand pressure value of the system equipped with the flow regulator. This pressure value can be determined according to actual usage requirements. Furthermore, the preset pressure can be a single value or a range of values ​​to accommodate system variations. This range is typically small and can be approximated as a fixed value.

[0071] like Figures 2 to 6 As shown, the flow control valve 1 also includes a mating part 500, which is connected to the first valve core 200 and moves with the first valve core 200. When the liquid pressure is above the preset pressure, the mating part 500 contacts the limiting part 400 and causes the limiting part 400 to disengage from the second valve core 300, so that the second valve core 300 blocks the liquid outlet 102.

[0072] The first valve core 200, acting as a component to regulate the flow area of ​​the throttling orifice, moves accordingly in response to changes in water pressure. This causes the mating part 500 to move along with the first valve core 200. When the liquid pressure reaches a preset pressure, the mating part 500, driven by the first valve core 200, moves to a position that disengages the second valve core 300. This allows the second valve core 300 to block the outlet 102, preventing excessive water pressure from flowing downstream of the pressure regulator and causing downstream components to burst. Thus, the movement of the first valve core 200 achieves pressure stabilization below the preset pressure, and blocks the outlet 102 of the second valve core 300 when the preset pressure is above it.

[0073] Specifically, such as Figures 2 to 4As shown, the mating part 500 moves with the first valve core 200. During this process, the mating part 500 moves from... Figure 2 From the initial position shown, move to Figure 3 The middle position shown, until it is moved to Figure 4 As shown in the final position, the limiting part 400 moves away from the second valve core 300 during this process until it disengages from the second valve core 300. After the second valve core 300 disengages from the limiting part 400, the second valve core 300 moves towards the liquid outlet 102 and blocks the liquid outlet 102.

[0074] In practical implementation, the limiting part 400 can be disengaged from the second valve core 300 through the mating part 500, or it can be achieved in other ways. For example, it can be achieved through an electronic control component, using a sensor to detect the liquid pressure and controlling the telescopic switch to move the limiting part 400 away from the second valve core 300 based on the sensor's detection result. When achieved through the mating part 500, this embodiment uses a purely mechanical structure, requiring no energy consumption and no corresponding electrical wiring; it is small in size, consumes no power, has a simple structure, and is easy and feasible to install in any direction.

[0075] like Figures 2 to 5 As shown, the limiting part 400 is arranged at an angle to the liquid flow direction W, and the limiting end of the limiting part 400 extends toward the second valve core 300 for connection with the second valve core 300. At least a portion of the mating part 500 extends parallel to the liquid flow direction W. The mating part 500 moves with the first valve core 200, and the extending end of the mating part 500 approaches and gradually extends into the limiting part 400. The limiting part 400 moves away from the second valve core 300. Through this arrangement, the limiting part 400 can restrict the position of the second valve core 300. Furthermore, the mating part 500 can move with the first valve core 200 along the liquid flow direction, gradually approaching the limiting part 400 and moving it away from the second valve core 300 until it disengages from the second valve core 300. This arrangement has a simple structure and makes the operation more reliable.

[0076] Specifically, such as Figure 2As shown, the liquid flow direction W is parallel to the axial direction of the first valve core 200 and the second valve core 300, and the arrangement direction of the limiting part 400 is perpendicular to the liquid flow direction W. The limiting part can contact and limit the second valve core 300 from the radial direction. A portion of the structure in the mating part 500 extends in a direction parallel to the axial direction of the first valve core 200, that is, perpendicular to the arrangement direction of the limiting part 400. It can be arranged using the radial positions of the first valve core 200 and the second valve core 300, that is, utilizing the radial space of the housing 100 to arrange the mating part 500 and the limiting part 400, thereby avoiding occupying the space in the housing 100 used to accommodate the first valve core 200 and the second valve core 300, allowing the liquid to flow through the first valve core 200 and the second valve core 300 to the outlet 102, improving the flow stabilization effect.

[0077] like Figures 2 to 5 and Figure 7 As shown, the limiting part 400 includes a body 410 and a limiting end. The limiting end is disposed at one end of the body 410 near the second valve core 300, and the limiting end is provided with a limiting groove 420. By providing the limiting groove 420, the second valve core 300 can be limited, and the limiting groove 420 can also facilitate the disengagement of the limiting part 400 from the second valve core 300 as the limiting part 400 moves away from the second valve core 300.

[0078] Furthermore, the limiting groove 420 has at least one groove wall in a direction that forms an angle with the liquid flow direction W, and the groove wall is used to abut against the second valve core 300. The limiting of the second valve core 300 can be achieved by means of at least one groove wall.

[0079] Specifically, such as Figure 7 As shown, the limiting portion 400 is generally cylindrical in shape, with its end serving as a limiting end, where a limiting groove 420 is provided. The limiting groove 420 is preferably formed by cutting away portions from the sidewalls and endwalls 220 of the cylindrical limiting portion 400. The groove wall located axially in the limiting portion 400 is an axial groove wall 421, which abuts against the second valve core 300, specifically against the annular sidewall 320 of the second valve core 300. The groove wall located radially in the limiting portion 400 is a radial groove wall 422, which may be spaced apart from or fitted to the annular sidewall 320.

[0080] Furthermore, such as Figures 2 to 5 and Figure 7 As shown, the body 410 is provided with a mating groove 430, which is used to contact the extended end of the mating part 500. In this embodiment, the mating groove 430 penetrates the body 410; in other embodiments, the mating groove 430 may also be recessed from the side wall of the body 410, and the distance of the recess is sufficient to allow the mating part 500 to move away from the second valve core 300.

[0081] like Figures 2 to 7 As shown, the extended end of the mating part 500 has a first inclined surface 521, and the mating groove 430 has a second inclined surface 431. The first inclined surface 521 and the second inclined surface 431 are mated together, and both the first inclined surface 521 and the second inclined surface 431 are inclined toward the first valve core 200 and the second valve core 300.

[0082] The mating part 500 and the limiting part 400 are in contact through inclined surfaces. During the movement of the mating part 500 toward the limiting part 400, the first inclined surface 521 and the second inclined surface 431 are both tilted toward the first valve core 200 and the second valve core 300. This allows the limiting part 400 to gradually move away from the second valve core 300 under the push of the mating part 500. This action method is simple and reliable, and can make the limiting part 400 gradually move away from the second valve core 300. When the liquid pressure reaches the preset pressure, the limiting part 400 can be quickly and accurately disengaged from the second valve core 300.

[0083] Specifically, the first inclined surface 521 and the second inclined surface 431 have the same inclination angle, and both are inclined towards the direction of the first valve core 200 and the second valve core 300. For example... Figure 6 As shown, the first inclined surface 521 is a surface located at the end of the mating part 500 and facing away from the first valve core 200, specifically a surface located at the end of the unlocking rod 520 facing away from the first valve core 200. Figure 7 As shown, the second inclined surface 431 is the surface in the mating groove 430 that is away from the second valve core 300.

[0084] like Figures 2 to 5 As shown, the flow control valve 1 also includes a first elastic element 610. The first elastic element 610 is disposed on the side of the body 410 opposite to the second valve core 300, and both ends of the first elastic element 610 are connected to the body 410 and the housing 100, respectively. The first elastic element 610 is used to provide a force that causes the limiting part 400 to abut against the second valve core 300. Figure 2 and Figure 3 As shown, the first elastic member 610 enables the limiting part 400 to reliably limit the second valve core 300 when it is being limited, preventing the limiting part 400 from moving due to factors such as water flow fluctuations and thus failing to limit the valve core. When the mating part 500 exits the mating groove 430, the first elastic member 610 enables the limiting part 400 to move back towards the second valve core 300, thereby limiting the second valve core 300 again.

[0085] like Figures 2 to 5 and Figure 7As shown, the limiting part 400 also includes a reset rod 450, which is connected to the body 410 and extends in a direction away from the body 410, extending beyond the housing 100. The reset rod 450 allows for convenient manipulation of the position of the body 410, enabling the body 410 to move away from the second valve core 300, thereby providing sufficient space for the second valve core 300 to return to its original position. Preferably, the reset rod 450 extends radially from the surface of the body 410 away from the mating part 500, along the limiting part 400.

[0086] like Figures 2 to 6 As shown, the mating part 500 includes a connecting rod 510 and an unlocking rod 520. The connecting rod 510 and the unlocking rod 520 are connected to form an L-shaped component. The connecting rod 510 is connected to the first valve core 200, and the unlocking rod 520 extends in a direction parallel to the liquid flow direction W, with the extended end being the end of the unlocking rod 520. This allows the mating part 500 to connect with the first valve core 200, and also enables the mating part 500 to have an unlocking rod 520 that moves along the liquid flow direction. This structure is simple, compact, and easy to manufacture. It can stabilize the movement of the first valve core 200 below a preset pressure, and convert it into a disengagement action from the second valve core 300 above the preset pressure.

[0087] like Figure 6 As shown, both the connecting rod 510 and the unlocking rod 520 are rod-shaped components. After the connecting rod 510 is connected to the second valve core 300, it extends along the radial direction of the second valve core 300. The unlocking rod 520 is connected to the connecting rod 510 and extends in a direction parallel to the axial direction of the second valve core 300. By configuring the extension length of the connecting rod 510, the required movement space of the first valve core 200 can be avoided. By configuring the extension length of the unlocking rod 520, the limiting part 400 can be disengaged from the second valve core 300 under a preset pressure.

[0088] like Figures 2 to 6 As shown, the first valve core 200 includes a first valve body 210 and an end wall 220. The end wall 220 is connected to the end of the first valve body 210 near the liquid inlet 101 and fits against the inner sidewall of the housing 100. Along the axial direction of the first valve core 200, the first valve body 210 and the end wall 220 are connected by a first flow hole 230. The diameter of the liquid inlet 101 is larger than the diameter of the first flow hole 230 and smaller than the diameter of the end wall 220.

[0089] Liquid can flow through the first flow hole 230, and the contact area between the first valve core 200 and the liquid can be increased through the end wall 220. Furthermore, the liquid inlet 101, the first flow hole 230, and the end wall 220 have the above-mentioned dimensional relationship, which makes it easy for the liquid to flow only through the first flow hole 230 to the liquid outlet 102, or for the liquid flow to drive the first valve core 200 to move for pressure stabilization or to block the liquid outlet 102.

[0090] like Figure 6 As shown, the mating part 500 of the flow regulator 1 is connected to the end wall 220 of the first valve core 200. This establishes a connection between the mating part 500 and the first valve core 200. Furthermore, when the first valve core 200 is pushed by liquid, the liquid can still contact the mating part 500, thereby pushing the end wall 220 of the first valve core 200 and the mating part 500 of the flow regulator 1, such as the connecting rod 510, making the overall movement of the first valve core 200 smoother. Preferably, the connecting rod 510 is connected to the end wall 220.

[0091] like Figure 6 As shown, the end wall 220 has a plate-like structure, the first valve body 210 has a cylindrical structure, and the first flow hole 230 penetrates the end wall 220 and the first valve body 210 to allow liquid to flow inside the first valve core 200. Figure 2 As shown, when liquid enters through inlet 101, and when the first valve core 200 is not moved, the liquid flows from the first flow hole 230 to the second valve core 300. Figure 3 As shown, when the pressure increases, liquid flows from the first flow hole 230 to the second valve core 300, simultaneously pushing the end wall 220, causing the first valve core 200 to move. Some of the liquid also pushes the connecting rod 510, ensuring smooth overall movement of the first valve core 200.

[0092] like Figures 2 to 5 As shown, the second valve core 300 includes a second valve body 310 and an annular sidewall 320. The annular sidewall 320 surrounds the outer sidewall of the second valve body 310 and fits against the inner sidewall of the housing 100. Along the axial direction of the second valve core 300, the second valve body 310 has a second flow hole 330. The second flow hole 330 communicates with the first flow hole 230.

[0093] The second flow hole 330 is connected to the first flow hole 230, allowing liquid to flow from the first valve core 200 to the second valve core 300 and out of the housing 100 through the outlet 102. The annular sidewall 320 allows the limiting part 400 to limit the second valve core 300, and the second valve core 300 fits against the inner sidewall of the housing 100, guiding the movement of the second valve core 300 for smoother movement.

[0094] like Figures 2 to 5As shown, the end of the first valve body 210 near the outlet 102 extends into the second valve body 310. The second valve body 310 is sleeved on the first valve body 210. When the second valve body 310 moves, the first valve body 210 can guide the movement of the second valve body 310. Furthermore, when the second valve body 310 is not moving, it can also fit against the inner wall of the housing 100 through the annular sidewall 320. By being sleeved on the first valve body 210, the second valve body 310 becomes more stable, preventing it from tilting or other issues.

[0095] like Figures 2 to 5 As shown, the limiting groove 420 of the limiting part 400 abuts against the annular sidewall 320. This limiting method is simple, easy to achieve, and easy to disengage. Specifically, the radial groove wall 422 of the limiting groove 420 is oriented opposite to the liquid flow direction W and abuts against the surface of the annular sidewall 320.

[0096] like Figures 2 to 5 As shown, the second valve body 310 has a cylindrical structure, and the annular sidewall 320 can be located in the middle region of the second valve body 310. The second valve body 310 is sleeved on the outer sidewall of the first valve body 210, which can guide the movement of the first valve body 210 and also make the axial structure of the flow control valve 1 compact. In other embodiments, the first valve body 210 can also be sleeved on the outer sidewall of the second valve body 310, and correspondingly, the annular sidewall 320 can be located at the end of the second valve body 310 away from the first valve core 200.

[0097] like Figures 2 to 5 as well as Figures 8 to 10 As shown, the housing 100 includes a first chamber 110 and a second chamber 120. The second chamber 120 communicates with the first chamber 110 along a direction that forms an angle with the liquid flow direction W. A first valve core 200 and a second valve core 300 are both disposed within the first chamber 110, with an inlet 101 and an outlet 102 located at opposite ends of the first chamber 110. A limiting part 400 is disposed within the second chamber 120. This satisfies the positional requirements of the first valve core 200, the second valve core 300, and the limiting part 400. Specifically, the axis of the first chamber 110 and the axis of the second chamber 120 are arranged perpendicularly.

[0098] like Figures 2 to 5 as well as Figure 9 and Figure 10 As shown, the inner wall of the first chamber 110 is provided with an abutment wall 111, which is arranged along a direction that makes an angle with the flow direction W of the liquid; the first valve body 210 passes through the abutment wall 111 and extends into the second valve body 310.

[0099] like Figure 2 and Figure 9As shown, the abutment wall 111 divides the first chamber 110 into two spaces, namely the first space 112 and the second space 113. The end wall 220 of the first valve core 200 is in contact with the inner wall of the first space 112 and moves within the first space 112. The annular side wall 320 of the second valve core 300 is in contact with the inner wall of the second space 113 and moves within the second space 113. When the first valve core 200 moves, the end wall 220 remains in contact with the inner wall of the first space 112, thereby preventing liquid from entering the space between the end wall 220 and the abutment wall 111, avoiding disturbance and erosion of the components located between the end wall 220 and the abutment wall 111. Furthermore, the first valve body 210 passes through the abutment wall 111, and its outer side wall is in contact with the inner side wall of the abutment wall 111, which can further prevent liquid from entering the space between the abutment wall 111 and the annular side wall 320, thus avoiding disturbance and erosion of the components located between the abutment wall 111 and the annular side wall 320.

[0100] Furthermore, such as Figure 2 and Figure 9 As shown, the first chamber 110 has a radial inner wall 114 at one end with a liquid outlet 102. The outer diameter of the second valve body 310 is adapted to the size of the corresponding through hole of the radial inner wall 114. The second valve body 310 can extend beyond the radial inner wall 114, and the radial inner wall 114 can guide the movement of the second valve body 310.

[0101] like Figure 2 , Figure 9 and Figure 10 As shown, a throttling column 115 is provided at the outlet 102 of the first chamber 110. The throttling column 115 extends along the flow direction W of the liquid. The space between the first valve core 200 and the throttling column 115 is a throttling orifice. Under the pressure of the liquid, the first valve core 200 moves inside the first chamber 110 to change the flow area of ​​the throttling orifice. The outlet 102 is located on the side wall of the first chamber 110.

[0102] like Figure 9As shown, the first chamber 110 has a first wall 116 and a second wall 117 at its two ends. The first wall 116 has an inlet 101 and also restricts the end wall 220 of the first valve core 200 to prevent the first valve core 200 from coming out of the inlet 101. The second wall 117 is a closed structure, and a throttling column 115 is provided inside the second wall 117. An outlet 102 is provided between the radial inner wall 114 and the second wall 117 of the first chamber 110. Preferably, there are multiple outlets 102, which are evenly arranged along the circumference of the first chamber 110. In other embodiments, the outlet 102 can also be provided on the second wall 117. Correspondingly, the end of the second valve core 300 facing the outlet 102 has a sealing wall. The size of the sealing wall is adapted to the outlet 102 so that liquid can flow out of the second valve core 300 normally, while the sealing wall can close the outlet 102.

[0103] like Figure 2 As shown, a second elastic element 620 is provided between the end wall 220 and the abutment wall 111, and a third elastic element 630 is provided between the annular side wall 320 and the abutment wall 111. The second elastic element 620 can improve the pressure stabilization effect of the liquid, and the third elastic element 630 can push the second valve core 300 to block the outlet 102. Specifically, the second elastic element 620 is used to provide a force to move the second valve core 300 towards the inlet 101, so that when the flow stabilizing valve 1 is in the flow stabilization stage, it provides a flow stabilizing force; when the flow stabilizing valve 1 leaves the danger point, it causes the first valve core 200 to return to its initial position. The third elastic element 630 is used to push the second valve core 300 towards the outlet 102 and block the outlet 102 when the limiting part 400 disengages from the second valve core 300.

[0104] The first elastic element 610, the second elastic element 620, and the third elastic element 630 are all preferably springs.

[0105] like Figure 8 and Figure 9 As shown, the side wall of the second chamber 120 is provided with a first hole 121 and a second hole 122. The first hole 121 is provided facing the mating part 500 of the flow regulator 1, for the mating part 500 to extend into the limiting part 400; the second hole 122 is used for the reset rod 450 of the limiting part 400 to extend out of the second chamber 120. The second hole 122 extends along the axial direction of the second chamber 120, and the extension length of the second hole 122 is sufficient to allow the limiting part 400 to leave the first chamber 110 when the reset rod 450 moves downward. Further, as... Figure 9 As shown, the side wall of the second chamber 120 is also provided with a third hole 123, which is positioned directly opposite the first hole 121 to allow space for the movement of the unlocking rod 520.

[0106] like Figure 9 andFigure 10 As shown, the housing 100 also includes a third chamber 130, which communicates with the side wall of the first chamber 110. A connecting rod 510 of the mating part 500 is disposed within the third chamber 130, and an unlocking rod 520 of the mating part 500 passes through the third chamber 130 and extends beyond it. Figure 10 As shown, the width of the communication port 131 between the third chamber 130 and the first chamber 110 is adapted to the width of the connecting rod 510, and the length of the communication port 131 is sufficient to meet the movement length required for the mating part 500 to move and push the limiting part 400.

[0107] Furthermore, the operation process of the flow stabilizing valve 1 provided in this embodiment is as follows:

[0108] like Figure 2 As shown, when the user has no water demand or the water flow is below the steady flow point, under the preload of the second elastic element 620, the overall structure is in a state of... Figure 2 At the position, cold water flows directly into the first valve core 200 and flows out at the outlet. Under the action of the first elastic member 610, the limiting part 400 limits the second valve core 300, and the limiting part 400 does not move.

[0109] like Figure 3 As shown, when the water flow fluctuates above the stabilizing point, the first valve core 200 moves to the right under the push of the water pressure, overcoming the elastic force of the second elastic element 620. At this time, the unlocking rod 520 of the mating part 500 also moves to the right with the first valve core 200. During the movement, the first inclined surface 521 of the unlocking rod 520 of the mating part 500 fits against the second inclined surface 431 of the limiting part 400. When the water pressure increases, it overcomes the elastic force of the first elastic element 610, causing the limiting part 400 to move downward, but does not cause the second valve core 300 to disengage from the limiting part 400. The second valve core 300 does not move. The overall stability of the water flow is still ensured by adjusting the pre-tightening force of the second elastic element 620 and the size of the flow area formed by the throttling column 115, and there will be no change in the flow rate.

[0110] like Figure 4 As shown, when the water pressure gradually increases to the danger point, the unlocking lever 520 of the first valve core 200 and the mating part 500 continues to move to the right, and the unlocking lever 520 of the mating part 500 pushes the limiting part 400 downward. Under the action of the third elastic element 630, the second valve core 300 disengages from the limiting part 400 and moves to the right. Finally, the second valve core 300 seals the liquid outlet 102 of the housing 100, preventing water from flowing out. This ensures that the rear end will not crack due to excessive water pressure or freeze due to low temperature, thus preventing unnecessary losses. The final movement state is as follows. Figure 4 As shown;

[0111] likeFigure 5 As shown, when the automatic closing of the outlet 102 occurs, the inlet is shut off. At this time, under no water pressure, the second elastic element 620 pushes the first valve core 200 to reset, and the unlocking rod 520 of the mating part 500 moves to the left. The limiting part 400 loses the function of the unlocking rod 520 of the mating part 500. Under the action of the first elastic element 610, the limiting part 400 moves upward, and finally the reset rod 450 and the housing 100 limit it. The overall state is as follows. Figure 5 As shown, in this state, by pushing the reset lever 450 downwards to its lowest position, and then using a tool to push the second valve core 300 to the left until it reaches its initial position, the reset lever 450 can be released. Under the action of the first elastic member 610, the limiting part 400 again limits the second valve core 300. At this time, the overall state is as follows. Figure 2 As shown, the entire structure has been restored to its original state.

[0112] The present invention also provides a water heater, which includes a flow regulator 1 as described above, wherein the flow regulator 1 is disposed at the water inlet of the water heater.

[0113] 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, a second valve core and a limiting part, the housing has a liquid inlet and a liquid outlet, liquid flows into the liquid inlet and flows out of the liquid outlet; the first valve core and the second valve core are sequentially arranged in the housing along the flow direction of the liquid, When the liquid pressure is below the preset pressure, the limiting part is connected with the second valve core and is used for limiting the position of the second valve core in the flow direction of the liquid; the first valve core moves in the housing under the action of the liquid pressure; When the liquid pressure is above the preset pressure, the limiting part is separated from the second valve core, and the second valve core moves in the flow direction of the liquid to block the liquid outlet; The steady flow valve further comprises a matching part, the matching part is connected with the first valve core and moves with the first valve core; When the liquid pressure is above the preset pressure, the matching part contacts the limiting part and separates the limiting part from the second valve core, so that the second valve core blocks the liquid outlet.

2. The steady flow valve of claim 1, wherein, The limiting part is arranged along a direction having an included angle with the flow direction of the liquid, and the limiting end of the limiting part extends to the second valve core for connection with the second valve core; At least part of the matching part extends along a direction parallel to the flow direction of the liquid, the matching part moves with the first valve core, the extending end of the matching part is close to and gradually extends into the limiting part, and the limiting part moves in a direction away from the second valve core.

3. The steady flow valve of claim 2, wherein, The limiting part comprises a body and a limiting end, the limiting end is arranged at one end of the body close to the second valve core, and the limiting end is provided with a limiting groove; The body is provided with a matching groove, and the matching groove is used for contacting the extending end of the matching part.

4. The steady flow valve of claim 3, wherein The extending end of the matching part has a first inclined surface, the matching groove has a second inclined surface, the first inclined surface and the second inclined surface are matched with each other, and the first inclined surface and the second inclined surface are both inclined to the direction close to the first valve core and the second valve core.

5. The steady flow valve of claim 3, wherein The steady flow valve further comprises a first elastic member, the first elastic member is arranged on the side of the body away from the second valve core, and the two ends of the first elastic member are connected with the body and the housing respectively, and the first elastic member is used for providing a force for abutting the limiting part and the second valve core; And / or, the limiting groove has at least one groove wall in a direction having an included angle with the flow direction of the liquid, and the groove wall is used for abutting the second valve core.

6. The steady flow valve of claim 3, wherein The limiting part further comprises a reset rod, the reset rod is connected with the body and extends in a direction away from the body and out of the housing.

7. The steady flow valve of claim 2, wherein The matching part comprises a connecting rod and an unlocking rod, the connecting rod and the unlocking rod are connected and form an L-shaped member, the connecting rod is connected with the first valve core, the unlocking rod extends along a direction parallel to the flow direction of the liquid, and the extending end is the end of the unlocking rod.

8. The steady flow valve of any one of claims 1-7, wherein, The first valve core comprises a first valve body and an end wall, the end wall is connected with one end of the first valve body close to the liquid inlet and is attached to the inner side wall of the housing; The first valve body and the end wall are penetrated by a first flow hole along the axial direction of the first valve core; the hole diameter of the liquid inlet is larger than that of the first flow hole and smaller than the diameter of the end wall.

9. The steady flow valve of claim 8, wherein, The matching part of the flow stabilizing valve is connected with the end wall of the first valve core.

10. The steady flow valve of claim 8, wherein, The second valve core comprises a second valve body and a ring side wall, which surrounds the outer side wall of the second valve body and is in contact with the inner side wall of the shell; The second valve body is penetrated by a second flow hole along the axial direction of the second valve core; the second flow hole is in communication with the first flow hole.

11. The steady flow valve of claim 10, wherein, The end of the first valve body close to the liquid outlet extends into the second valve body; And / or, the limiting groove of the limiting part is in abutment with the ring side wall.

12. The steady flow valve of claim 10, wherein, The shell comprises a first chamber and a second chamber, the second chamber is in communication with the first chamber along a direction having an included angle with the flow direction of the liquid; The first valve core and the second valve core are arranged in the first chamber, and the liquid inlet and the liquid outlet are arranged at the two ends of the first chamber; the limiting part is arranged in the second chamber.

13. The steady flow valve of claim 12, wherein, The inner side wall of the first chamber is provided with an abutment wall arranged along a direction having an included angle with the flow direction of the liquid; the first valve body penetrates the abutment wall and extends into the second valve body; The second elastic member is arranged between the end wall and the abutment wall, and the third elastic member is arranged between the ring side wall and the abutment wall; And / or, the side wall of the second chamber is provided with a first hole and a second hole, the first hole is arranged towards the matching part of the flow stabilizing valve, for the matching part to extend into the limiting part; the second hole is used for the reset rod of the limiting part to extend out of the second chamber; And / or, the shell further comprises a third chamber, the third chamber is in communication with the side wall of the first chamber, the connecting rod of the matching part is arranged in the third chamber, and the unlocking rod of the matching part penetrates the third chamber and extends out of the third chamber.

14. The steady flow valve of claim 12, wherein, The first chamber is provided with a throttling column at the liquid outlet, the throttling column extends along the flow direction of the liquid, the space between the first valve core and the throttling column is a throttling port, and the first valve core moves inside the first chamber under the pressure of the liquid to change the flow area of the throttling port; And / or, the liquid outlet is arranged on the side wall of the first chamber.

15. A water heater, characterized by The water heater comprises the flow stabilizing valve according to any one of claims 1-14. The water heater comprises the flow stabilizing valve according to any one of claims 1-14.

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