Water valve and gas appliance comprising same

Abstract

The application discloses a water valve and a gas equipment with the same, and relates to the technical field of valves, in particular to a water valve and a gas equipment with the same. The water valve comprises a valve body, a valve core, a valve seat and a spring. The valve body defines a valve cavity, and an inlet and an outlet are arranged at the axial ends of the valve body. The inlet and the outlet are communicated through the valve cavity. The valve core is arranged in the valve cavity, and the valve core defines a water channel communicated with the valve cavity. The valve seat is arranged in the valve cavity and located at the downstream side of the valve core, and the valve seat is provided with a valve plug arranged opposite to the axial outlet of the water channel. The spring is sleeved on the valve core for adjusting the distance between the valve plug and the axial outlet. The pressure reduction structure is arranged in the valve cavity and located at the upstream side of the valve core, and the pressure reduction structure plays a throttling and pressure reduction role on the water flow in the valve cavity. According to the water valve, the flow rate of the water flow can be reduced by arranging the pressure reduction structure, the steady flow effect is achieved, the positive impact of the water flow on the spring is reduced, the stability of the spring in the valve cavity is improved, the spring extension amount is adjusted according to the water temperature, and then the opening of the water valve is accurately adjusted by the spring, so that the stability of the water valve flow is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a water valve and a gas equipment with the same. BACKGROUND

[0002] When a gas water heater is used, pressure fluctuation of a water pipe will cause obvious water flow fluctuation in the water pipe, so that the water outlet temperature is unstable. To solve such problems, the gas water heater is designed with a memory alloy temperature control valve, which will adjust the opening degree of the water valve according to the change of the temperature to meet the hot water requirement. However, the water valve in the related art relies on the structure of the tail of the valve body to realize throttling, so that the flow rate of the memory alloy valve is large and the turbulent flow is also large, which easily causes the pipe to make a large sound. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art to some extent.

[0004] To this end, one purpose of an embodiment of the first aspect of the present application is to provide a water valve, which is stable in flow and low in noise under different water temperature conditions.

[0005] One purpose of an embodiment of the second aspect of the present application is to provide a gas equipment, which comprises the above water valve.

[0006] The water valve according to the embodiment of the present application comprises: a valve body, which defines a valve cavity, and has a water inlet at one axial end and a water outlet at the other end, and the water inlet and the water outlet are communicated through the valve cavity; a valve core, which is arranged in the valve cavity and defines a water channel communicated with the valve cavity; a valve seat, which is arranged in the valve cavity and located at the downstream side of the valve core, and is provided with a valve plug arranged opposite to the axial outlet of the water channel; a spring, which is sleeved on the valve core for adjusting the distance between the valve plug and the axial outlet; and a pressure reduction structure, which is arranged in the valve cavity and located at the upstream side of the valve core, and plays a role of throttling and pressure reduction on the water flow in the valve cavity.

[0007] The water valve according to the embodiment of the present application can reduce the flow rate of the water flow to achieve the effect of stable flow, reduce the positive impact of the water flow on the spring, improve the stability of the spring in the valve cavity, so that the extension amount of the spring is adjusted according to the water temperature, and then the opening degree of the water valve is accurately adjusted through the water valve to ensure the stability of the water valve flow.

[0008] In addition, the water valve according to the above-mentioned embodiment of the present application can also have the following additional technical features:

[0009] According to one embodiment of the present application, the pressure reducing structure is a baffle plate, which is arranged horizontally in the valve cavity, and which is provided with a plurality of water passing channels.

[0010] According to one embodiment of the present application, the baffle plate comprises a central plate and a plurality of connecting ribs connected between the central plate and the inner wall of the valve cavity, and the connecting ribs are arranged at intervals to form the water passing channels.

[0011] According to one embodiment of the present application, the connecting ribs are distributed uniformly in a radial manner around the outer periphery of the central plate.

[0012] According to one embodiment of the present application, the central plate has a circular cross section.

[0013] According to one embodiment of the present application, the valve cavity is provided with an inner protrusion, which forms a throat cavity, and the baffle plate is arranged at the outlet end of the throat cavity.

[0014] According to one embodiment of the present application, along the flow direction of the fluid, the valve body comprises at least a first pipe section, a second pipe section, a third pipe section and a fourth pipe section, and the inner diameter of the second pipe section is smaller than that of the first pipe section and the third pipe section.

[0015] According to one embodiment of the present application, the inner diameter of the third pipe section is smaller than that of the fourth pipe section.

[0016] According to one embodiment of the present application, the first pipe section, the second pipe section, the third pipe section and the fourth pipe section are all equal diameter pipes.

[0017] According to one embodiment of the present application, the first pipe section, the second pipe section, the third pipe section and the fourth pipe section are integrally formed.

[0018] According to one embodiment of the present application, the first pipe section, the second pipe section, the third pipe section and the fourth pipe section are integrally formed.

[0019] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a front view of a water valve according to one embodiment of the present application;

[0021] Figure 2 is a sectional view along line A-A in Figure 1

[0022] Figure 3 is a sectional view of a valve body and a pressure reducing structure according to one embodiment of the present application

[0023] ​Figure 4 It is along Figure 3 Sectional view of the middle BB line;

[0024] Figure 5 This is a perspective view of a valve core according to an embodiment of the present invention;

[0025] Figure 6 This is a front view of a valve core according to an embodiment of the present invention;

[0026] Figure 7 It is along Figure 6 A cross-sectional view of the CC line;

[0027] Figure 8 This is a perspective view of a valve seat according to an embodiment of the present invention;

[0028] Figure 9 This is a front view of a valve seat according to an embodiment of the present invention;

[0029] Figure 10 It is along Figure 9 Sectional view of the DD line;

[0030] Figure 11 This is a side view of a valve seat according to an embodiment of the present invention.

[0031] Figure label:

[0032] Water valve 100,

[0033] Valve body 10, valve chamber 101, inlet 102, outlet 103, inner protrusion 104, first pipe section 11, second pipe section 12, third pipe section 13, fourth pipe section 14

[0034] Valve core 20, water channel 201, axial inlet 202, lateral inlet 203, axial outlet 204, first limiting structure 21, first limiting groove 211, limiting plate rib 212, water passage hole 213, annular baffle 214, main body 22, annular inclined surface 23

[0035] Valve seat 30, drain channel 301, valve plug 31, tail 311, head 312, first inclined surface 3121, second inclined surface 3122, second limiting structure 32, partition plate 33, diversion hole 331.

[0036] Spring 40,

[0037] Pressure-reducing structure 50, center plate 51, connecting rib 52, water passage 501.

[0038] The flow rotor is 60°, with inclination angles α and β. Detailed Implementation

[0039] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0040] In the commonly used memory alloy valve, water flows into from the flow measurement impeller, through the valve core 20, and flows out from the valve seat 30. The flow measurement impeller assembly is mainly used for measuring the water flow in the valve, the valve core 20 and the valve seat 30 constitute a throttling hole to achieve throttling, and the spring 40 is made of a memory alloy material, and the stiffness is different at different temperatures, that is, the opening degree of the valve core 20 and the valve seat 30 is different under the same water force, so as to change the flow. Under different water inlet pressures, since the flow is constant, the flow rate of the water flowing out of the valve seat 30 is the same, and the water expands after passing through the valve core 20, so that the turbulent flow of the tail flow is generated, and the noise of the water valve 100 is large.

[0041] The present application provides a water valve 100 and a gas equipment with the same, and the water valve 100 according to an embodiment of the present application is described below with reference to the accompanying drawings. Figures 1 to 11 As shown in Figure 1 , Figure 2 and Figure 3 , the water valve 100 can generally include a valve body 10, a valve core 20, a valve seat 30, a spring 40 and a pressure reduction structure 50, wherein the valve body 10 has a valve cavity 101 therein, and the pressure reduction structure 50 plays a role of throttling and pressure reduction on the water flow in the valve cavity 101.

[0042] According to the water valve 100 of the embodiment of the present application, by arranging the pressure reduction structure 50, the flow rate of the water flow can be reduced to achieve the effect of stable flow, the positive impact of the water flow on the spring 40 is reduced, the stability of the spring 40 in the valve cavity 101 is improved, the extension amount of the spring 40 is adjusted according to the water temperature, and then the opening degree of the water valve 100 is accurately adjusted by the spring, so as to ensure the stability of the water flow of the water valve 100.

[0043] Specifically, as shown in Figure 2 , the valve body 10 defines the valve cavity 101, one end of the valve body 10 in the axial direction is provided with a water inlet 102, and the other end is provided with a water outlet 103, the water inlet 102 and the water outlet 103 are communicated through the valve cavity 101. The valve core 20 is arranged in the valve cavity 101, and the valve core 20 defines a water channel 201 communicated with the valve cavity 101. The valve seat 30 is arranged in the valve cavity 101 and located on the downstream side of the valve core 20.

[0044] During the working process of the water valve 100, water enters the valve cavity 101 from the water inlet 102, and then flows out of the valve cavity 101 from the water outlet 103 after passing through the water channel 201 of the valve core 20 and the valve seat 30.

[0045] The valve seat 30 is provided with a valve plug 31 opposite to the axial outlet 204 of the water channel 201, and the spring 40 is sleeved on the valve core 20 to adjust the distance between the valve plug 31 and the axial outlet 204. Thus, the distance between the valve plug 31 and the axial outlet 204 of the water channel 201 is adjusted by the spring 40, that is, the spring 40 can adjust the size of the axial outlet 204 of the water channel 201, thereby changing the opening of the water valve 100.

[0046] In the working process of the water valve 100, in an ideal case, the opening of the water valve 100 will only change with the change of temperature. In the actual case, the water flow will generate an axial impact force on the valve core 20, and since the spring 40 is sleeved on the valve core 20, the impact of the water flow will affect the deformation amount of the spring 40. Therefore, in order to improve the accuracy of the water valve 100, the water valve 100 should minimize the impact of the water flow on the valve core 20. In addition, since the flow rate is constant, the water flow rate out of the valve seat 30 is the same, and when the water flow rate is large, the water flow out of the valve seat 30 will generate a turbulent flow, thereby generating noise.

[0047] In order to reduce the impact of the axial impact force of the water flow, as shown in Figure 2 In combination with Figure 3 and Figure 4 , the application sets a pressure reduction structure 50, which is arranged in the valve cavity 101 and located on the upstream side of the valve core 20. The pressure reduction structure 50 throttles and reduces the pressure of the water flow in the valve cavity 101. Thus, after the water flow enters the valve cavity 101, it is throttled and reduced in pressure by the pressure reduction structure 50, and the flow rate and pressure of the water flow are reduced, thereby reducing the axial impact force of the water flow on the valve core 20, improving the accuracy of the water valve 100, and inhibiting the generation of turbulent flow, which is conducive to reducing noise.

[0048] In one embodiment, the spring 40 is made of a memory alloy material, and the stiffness of the spring 40 is different under different temperature conditions. Thus, under the same water action force, the deformation amount of the spring 40 is different, that is, the opening of the water valve 100 is different, thereby changing the flow rate. When the opening of the water valve 100 changes, the water inlet pressure also changes. Under different water inlet pressures, since the flow rate is constant, the water flow rate out of the valve seat 30 is the same, and thus, a turbulent flow of the tail flow is generated, thereby generating noise. Under the same temperature conditions, when the water flow rate is too fast, the turbulent flow phenomenon at the tail end of the valve body 10 is obvious, and the noise is large.

[0049] In some embodiments, as shown in Figure 3 In combination with Figure 4As shown, the pressure reducing structure 50 is a baffle plate arranged horizontally in the valve cavity 101, and the baffle plate is provided with a plurality of water passing channels 501. When the water flow passes through the baffle plate, the water flow collides with the baffle plate, so that the flow direction of the water flow is changed, and the water flow enters the valve core 20 from the plurality of water passing channels 501, thereby playing a role of throttling and reducing pressure.

[0050] In some optional embodiments, as shown in Figure 4 As shown, the baffle plate includes a center plate 51 and a plurality of connecting ribs 52 connected between the center plate 51 and the inner wall of the valve cavity 101, and the plurality of connecting ribs 52 are arranged at intervals to form a plurality of water passing channels 501. In other words, the water passing channels 501 are defined by the valve body 10, the center plate 51 and the connecting ribs 52, and the center plate 51 and the connecting ribs 52 play a role of reducing pressure, reducing resistance and changing the flow direction of the water flow. After the water flow is changed in direction, the water flow enters the valve core 20 through the water passing channels 501.

[0051] In some specific embodiments, as shown in Figure 4 As shown, the connecting ribs 52 are uniformly distributed in a radial manner at the outer periphery of the center plate 51. The plurality of connecting ribs 52 are respectively connected to the inner peripheral wall of the valve body 10 and the center plate 51, which can improve the connection stability of the center plate 51 and the valve body 10. In addition, the connecting ribs 52 are uniformly distributed in a radial manner, which can keep the areas of the plurality of water passing channels 501 consistent, thereby ensuring that the flow rate and water pressure of the water flow after passing through each water passing channel 501 are the same.

[0052] In some specific embodiments, as shown in Figure 4 As shown, the center plate 51 has a circular cross section. Of course, the above-mentioned embodiments are only illustrative, and cannot be understood as a limitation on the protection scope of the present application. For example, the center plate 51 can also be in the shape of an equilateral triangle, a square, an equilateral pentagon, an equilateral hexagon or a trapezoid.

[0053] In some specific embodiments, as shown in Figure 2 As shown, the valve cavity 101 is provided with an inner protrusion 104, and the baffle plate is formed at the outlet end of the throat cavity formed by the inner protrusion 104. By arranging the inner protrusion 104, the throat cavity is formed in the inner protrusion 104, which can play a role of guiding the flow on the one hand, and can also increase the contact area of the baffle plate and the inner protrusion 104, thereby improving the connection strength of the baffle plate and the valve body 10, and improving the stability of the water valve 100.

[0054] In addition, as shown in Figure 2 The flow rotor 60 is arranged between the inner protrusion 104 and the water inlet 102 of the valve body 10, and the flow rotor 60 is used to measure the flow rate of the water flow. By arranging the inner protrusion 104, the side of the inner protrusion 104 close to the water inlet 102 abuts against the flow rotor 60, thereby playing a role of positioning and limiting.

[0055] In some embodiments, as shown in Figure 1Combining Figure 2 and Figure 3 As shown in the drawings, along the flow direction of the fluid, the valve body 10 at least includes a first pipe segment 11, a second pipe segment 12, a third pipe segment 13 and a fourth pipe segment 14, the inner diameter of the second pipe segment 12 is smaller than the first pipe segment 11 and the third pipe segment 13. In this way, on the one hand, the structural strength of the valve body 10 can be increased, and on the other hand, a step is formed between the second pipe segment 12 and the first pipe segment 11 and between the second pipe segment 12 and the third pipe segment 13, which can limit the position and facilitate installation and positioning.

[0056] In some optional embodiments, as shown in Figure 1 , Figure 2 and Figure 3 , the inner diameter of the third pipe segment 13 is smaller than the inner diameter of the fourth pipe segment 14. In this way, after the water flow passes through the third pipe segment 13 and enters the fourth pipe segment 14, the water flow velocity is reduced and the water pressure is reduced, which can reduce the circumferential impact force of the water flow on the valve core 20, further improve the accuracy of the water valve 100, and also play a role in preventing mistakes and facilitating installation.

[0057] In some optional embodiments, the first pipe segment 11, the second pipe segment 12, the third pipe segment 13 and the fourth pipe segment 14 are all equal-diameter pipes.

[0058] From the above, the inner diameters of the first pipe segment 11, the second pipe segment 12, the third pipe segment 13 and the fourth pipe segment 14 are not limited to the above cases, for example, the inner diameter of the first pipe segment 11 can be smaller than the inner diameter of the second pipe segment 12, and the inner diameters of the second pipe segment 12, the third pipe segment 13 and the fourth pipe segment 14 are the same.

[0059] In some optional embodiments, the first pipe segment 11, the second pipe segment 12, the third pipe segment 13 and the fourth pipe segment 14 are integrally formed. Of course, the first pipe segment 11, the second pipe segment 12, the third pipe segment 13 and the fourth pipe segment 14 can also be welded together.

[0060] In some embodiments, as shown in Figure 2 Combining Figure 5 , Figure 6 and Figure 7 , the valve core 20 has an axial inlet 202 and an axial outlet 204 which communicate with a water channel 201, and the valve core 20 is also provided with a lateral inlet 203 which communicates with the water channel 201. After passing through the pressure reducing structure 50, the water flow enters the valve core 20, specifically, the water flow passes through the water passage 501 and then enters the water channel 201 through the axial inlet 202 and the lateral inlet 203 respectively, and then flows out from the axial outlet 204. In other words, the valve core 20 has a lateral inlet 203 and an axial inlet 202, and the water flow can enter the water channel 201 from the lateral inlet 203, thereby playing a role in flow splitting, reducing the axial impact force of the water flow on the valve core 20, and improving the stability and accuracy of the water valve 100.

[0061] In some optional embodiments, as shown in Figure 5 , Figure 6 and Figure 7 , the lateral inlet 203 is arranged close to one end of the axis inlet 202 of the valve core 20. Thus, the water flow entering the water channel 201 from the lateral inlet 203 and the axis inlet 202 respectively converges and then flows out of the axial outlet 204 after the flow direction is made consistent by the flow regulation of the water channel 201.

[0062] In some specific embodiments, as shown in Figure 6 and Figure 7 , a plurality of lateral inlets 203 are arranged in the same circumferential direction of the valve core 20. By arranging a plurality of lateral inlets 203, the water flow can be further divided. For example, the lateral inlets 203 include two, three or four arranged at intervals along the valve core 20.

[0063] In one specific embodiment, two lateral inlets 203 are arranged in the same circumferential direction of the valve core 20. After a large number of experiments, the inventor found that when the number of lateral inlets 203 is greater than two, the water flow between the lateral inlets 203 will affect each other, and the flow of the water valve 100 at a certain temperature will easily jump, which cannot guarantee the stability of the flow. Arranging two lateral inlets 203 helps to stabilize the valve core 20, so that the flow of the water valve 100 at a certain temperature tends to be stable.

[0064] Further, the two lateral inlets 203 are symmetrically arranged relative to the central axis of the valve core 20. Thus, the water flow entering the water channel 201 from the two lateral inlets 203 collides and loses energy to each other, which is conducive to reducing the flow rate of the two water flows, so that the water flow after the flow regulation of the water channel 201 is stable.

[0065] In some embodiments, as shown in Figure 5 , Figure 6 and Figure 7 , the shape of the lateral inlet 203 is circular or square. Of course, the above embodiments are only illustrative and cannot be understood as limiting the scope of protection of the present application. For example, the shape of the lateral inlet 203 can also be triangular, oval, pentagonal, etc.

[0066] In some specific embodiments, as shown in Figure 2 in combination with Figure 5 , Figure 6 and Figure 7As shown, the axis inlet end of the valve core 20 is provided with a first limiting structure 21, the first limiting structure 21 defines a first limiting groove 211, the valve seat 30 is provided with a second limiting structure 32, the second limiting structure 32 defines a second limiting groove 321, one end of the spring 40 is arranged in the first limiting groove 211, and the other end of the spring 40 is arranged in the second limiting groove 321. In this way, the spring 40 is sleeved on the outer circumferential surface of the valve core 20, and the spring 40 is clamped between the first limiting structure 21 and the second limiting structure 32, so that the installation of the spring 40 is stable. It can also be seen that when the valve core 20 is subjected to axial impact, the valve core 20 transmits the impact force to the spring 40, the spring 40 deforms, and thus the valve core 20 as a whole moves, thereby changing the distance between the axial outlet 204 of the valve core 20 and the valve plug 31 to change the opening of the valve core 20 and the valve seat 30, and the flow rate is changed. Therefore, in some cases, the opening of the water valve 100 can also be changed according to the size of the water pressure.

[0067] In one embodiment, as shown in Figure 5 In combination Figure 6 And Figure 7 As shown, the first limiting structure 21 includes a plurality of limiting plate ribs 212 and an annular baffle 214, the plurality of limiting plate ribs 212 are connected to the outer circumferential surface of the valve core 20, adjacent limiting plate ribs 212 define a water passage hole 213 in communication with the lateral inlet 203, and the annular baffle 214 is connected to the outer circumferential edge of the limiting plate rib 212. In this way, the water flow enters the valve cavity 101 from the water inlet 102, a part of the water flow passes through the water passage hole 213 after throttling by the baffle, and then enters the water channel 201 through the lateral inlet 203, another part of the water flow directly enters the water channel 201 through the axial inlet 202, and the water flow after entering the water channel 201 from the lateral inlet 203 and the axial inlet 202 flows out of the water channel 201 after rectification from the axial outlet 204. Among them, the annular baffle 214 extends along the axial direction of the water valve 100, so that the annular baffle 214, the plurality of limiting plate ribs 212 and the main body 22 of the valve core 20 define the first limiting groove 211, and one end of the spring 40 can extend into the first limiting groove 211, thereby improving the connection stability of the spring 40.

[0068] In some embodiments, as shown in Figure 2 In combination Figure 8 And Figure 10 As shown, the valve seat 30 defines a drainage passage 301, and the axial outlet end 204 of the valve core 20 at least partially extends into the drainage passage 301. In this way, the drainage passage 301 not only plays a role in positioning the valve core 20, but also allows the valve core 20 to move along the axial direction of the drainage passage 301 to adjust the gap between the axial outlet 204 and the valve plug 31, thereby facilitating the adjustment of the opening.

[0069] In some embodiments, as shown inFigure 2 In combination Figure 7 As shown in FIG. 2, the axial outlet 204 of the valve core 20 is formed as an annular inclined surface with an inclination angle a between 10° and 40°. For example, a can be 10°, 20°, 30° or 40°, and in one embodiment, a is 31°. The water flow from the axial outlet 204 of the valve core 20 flows away from the axis of the valve core 20 after being guided by the annular inclined surface 23, which increases the flow area and reduces the flow rate of the water flow from the valve core 20. In addition, the annular inclined surface of the axial outlet 204 is also conducive to adjusting the opening between the valve core 20 and the valve seat 30.

[0070] In some embodiments, as shown in FIG. 3, Figure 2 In combination Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown in FIG. 2, the valve seat 30 defines a drain passage 301 that communicates with the water channel 201, and the drain passage 301 has an outlet provided with a valve plug 31. The head 312 of the valve plug 31 extends into the drain passage 301 and is opposite the axial outlet 204, and the tail 311 of the valve plug 31 extends out of the drain passage 301. The upstream section of the tail 311 has a smaller cross section than the downstream section.

[0071] In the related art, the water flow from the drain passage 301 spreads outwards and is prone to generate noise. In the present application, the water flow from the axial outlet 204 of the valve core 20 enters the drain passage 301 and then flows out of the drain passage 301. The water flow flows along the surface of the tail 311 (i.e., the tail 311 functions as a guide). Since the upstream section of the tail 311 has a smaller cross section than the downstream section, a negative pressure zone is formed near the surface of the tail 311, which can press the water flow against the surface of the tail 311. The water flow converges towards the middle, which functions as a flow collector. In this way, the water valve 100 achieves stable flow and reduces noise. The shape of the tail 311 of the valve plug 31 can be tapered, such as a conical shape. The tail 311 can also be divided into N sections, where the outer diameter of the Nth section is smaller than that of the (N-1)th section. The outer diameter of each section in the axial direction can be the same or different.

[0072] In some optional embodiments, as shown in FIG. 4, Figure 8 , Figure 10 and Figure 11 The drain passage 301 is provided with a partition plate 33, the valve plug 31 penetrates through the partition plate 33, and the partition plate 33 is provided with a plurality of flow dividing holes 331. The tail 311 of the valve plug 31 extends out of the drain passage 301. In this way, the water flow from the valve core 20 enters the drain passage 301 and then flows out of the plurality of flow dividing holes 331. Since the upstream section of the tail 311 has a smaller cross section than the downstream section, flow collection can be achieved.

[0073] In some embodiments, as shown in Figure 8 and Figure 11 the shunt holes 331 are evenly distributed around the valve plug 31. In this way, the flow rate and flow velocity of the water streams flowing out of the plurality of shunt holes 331 are uniform, facilitating the collection of the water streams at the tail portion 311 of the valve plug 31.

[0074] In one embodiment, as shown in Figure 2 , Figure 8 , Figure 9 and Figure 10 the tail portion 311 of the valve plug 31 is conical. Of course, the above embodiment is only illustrative and should not be construed as limiting the scope of protection of the present application. For example, the valve plug 31 can also be a circular truncated cone or a conical frustum, or a combination of at least one of the above.

[0075] In some embodiments, the end of the tail portion 311 is flush with the outlet end of the valve cavity 101 or located inside the valve cavity 101. In this way, the water streams flow out of the water outlet 103 of the water valve 100 after being collected, achieving good collection effect and generating less noise.

[0076] After the water streams flow out of the valve core 20, they directly impact the valve plug 31, causing a large number of vortexes between the valve core 20 and the valve plug 31. The vortexes generate an axial force on the valve core 20 in the opposite direction of the water flow, pushing the valve core 20 to move in the opposite direction of the water flow. However, under the action of water pressure, the valve core 20 tends to move in the same direction as the water flow, and since the spring 40 is sleeved on the outer peripheral surface of the valve core 20, it causes vibration of the valve core 20, resulting in noise and unstable water pressure.

[0077] To solve the above technical problems, as shown in Figure 10 the head portion 312 of the valve plug 31 of the present application forms a first inclined surface 3121 and a second inclined surface 3122, and the first and second inclined surfaces 3122 form a buffer channel with the annular inclined surface 23. By providing the buffer channel, vortexes between the valve core 20 and the valve seat 30 can be avoided, reducing noise and stabilizing the flow.

[0078] In some embodiments, as shown in Figure 2 in combination with Figure 7 and Figure 10As shown, the inclination angle of the first and second inclined surfaces 3122 is β, and β is between 10° and 30°, wherein β is less than α. For example, β is 10°, 20° or 30°. By setting β to be less than α, the distance between the annular inclined surface 23 and the mating surface of the first and second inclined surfaces 3121 and 3122 gradually decreases, the valve core 20 is gently decompressed, and the water pressure in the buffer channel has a buffering effect on the valve core 20; on the contrary, by setting β to be greater than α, the water pressure is lost quickly, and a pressure vortex is easily generated between the valve core 20 and the valve seat 30, which has a reverse force on the valve core 20, thereby very easily generating whole machine vibration noise and poor stability.

[0079] In one specific embodiment, β is 20° and α is 31°. It should be noted that α and β in the present application are the angles between the inclined surface and the plane perpendicular to the axis direction of the water valve 100.

[0080] By setting the decompression structure, the valve core side water inlet structure and the valve plug tail flow collecting structure of the valve seat, the present application can realize step-by-step decompression, can avoid the spring from being subjected to a large axial water flow impact force, can effectively improve the reliability of the water valve, especially when the spring is a memory alloy material, can further improve the sensitivity and reliability of the spring to temperature response, and can also avoid generating a vortex and reducing noise.

[0081] The gas equipment according to the embodiment of the present application comprises the water valve 100 described above, the gas equipment has less noise, and the water outlet amount is more accurate.

[0082] In the description of the present application, it should be understood that the terms "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0083] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0084] In the present application, unless otherwise explicitly specified and limited, a first feature "on" or "under" a second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "over", "above" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. The first feature "under", "below" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0085] In the description of the present application, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the particular feature, structure, material or characteristic being described is included in at least one embodiment or example of the present application. The illustrative description of the above terms in the present specification does not necessarily indicate that the terms refer to the same embodiment or example. Moreover, the description of particular features, structures, materials or characteristics in the present application can be combined in any suitable manner in one or more embodiments or examples. In addition, different embodiments or examples described in the present specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction, if necessary.

[0086] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A water valve, characterized in that The water valve comprises: a valve body defining a valve cavity, the valve body having a water inlet at one axial end and a water outlet at the other axial end, the water inlet and the water outlet being in communication through the valve cavity; a valve core arranged in the valve cavity, the valve core defining a water channel in communication with the valve cavity, an axial outlet end of the valve core forming an annular inclined surface, the inclined surface having an inclination angle α, the angle α being between 10° and 40°; a valve seat arranged in the valve cavity and located at a downstream side of the valve core, the valve seat being provided with a valve plug arranged axially opposite to the water channel outlet, a head of the valve plug forming a first inclined surface and a second inclined surface, the first and second inclined surfaces and the annular inclined surface forming a buffer channel, the first and second inclined surfaces having an inclination angle β, the angle β being between 10° and 30°, wherein the angle β is smaller than the angle α, the valve seat defining a drainage channel in communication with the water channel, the drainage channel being provided with a partition plate, the valve plug penetrating through the partition plate, the partition plate being provided with a plurality of shunt holes, the shunt holes being uniformly distributed around the valve plug; a spring sleeved on the valve core for adjusting the distance between the valve plug and the axial outlet; a pressure reduction structure arranged in the valve cavity and located at an upstream side of the valve core, the pressure reduction structure throttling and reducing the water flow in the valve cavity.

2. The water valve of claim 1, wherein The pressure reduction structure is a baffle arranged horizontally in the valve cavity, the baffle being provided with a plurality of water passing channels.

3. The water valve of claim 2, wherein The baffle comprises a central plate and a plurality of connecting ribs connected between the central plate and the inner wall of the valve cavity, the connecting ribs being arranged at intervals to form the plurality of water passing channels.

4. The water valve of claim 3, wherein The connecting ribs are uniformly distributed in a radial manner around the outer periphery of the central plate.

5. The water valve of claim 3, wherein The central plate has a circular cross section.

6. The water valve of claim 3, wherein The valve cavity is provided with an inner protrusion, the inner protrusion defining a throat cavity, the baffle being formed at an outlet end of the throat cavity.

7. The water valve of claim 1, wherein In the flow direction of the fluid, the valve body comprises at least a first pipe segment, a second pipe segment, a third pipe segment and a fourth pipe segment, the inner diameter of the second pipe segment being smaller than the first pipe segment and the third pipe segment.

8. The water valve of claim 7, wherein The inner diameter of the third pipe segment is smaller than the inner diameter of the fourth pipe segment.

9. The water valve of claim 7, wherein The first pipe segment, the second pipe segment, the third pipe segment and the fourth pipe segment are equal-diameter pipes.

10. The water valve of claim 7, wherein The first pipe segment, the second pipe segment, the third pipe segment and the fourth pipe segment are integrally formed.

11. A gas appliance characterised in that, The water valve comprises any one of claims 1-10.

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