Water inlet electromagnetic valve with flow limiting assembly
By designing a flow-limiting component in the inlet solenoid valve and using the central baffle of the flow-limiting cover to buffer the high-pressure water flow, the problem of uneven flow under high water pressure is solved, and stable flow control at the far and near outlets is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANYU GRP CO LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-05-12
AI Technical Summary
The existing inlet solenoid valve has a large flow rate at the far outlet under high water pressure, but a small flow rate or no flow at the near outlet, making it impossible to achieve stable flow control.
A water inlet solenoid valve with a flow limiting component was designed, including a valve body, a coil assembly, an opening and closing assembly, and a flow limiting component. The flow limiting component consists of a flow limiting gasket, a flow limiting valve seat, and a flow limiting cover. By buffering the high-pressure water flow through the central baffle of the flow limiting cover, the water flow is ensured to be evenly distributed, thereby achieving stable flow control.
Under high water pressure, the flow rate at both the far and near outlets is uniform and stable, enabling precise control of the inlet valve flow rate and avoiding the problem of uneven flow.
Smart Images
Figure CN224229335U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an inlet solenoid valve with a flow limiting component, which may be classified as F16K 15 / 14 or F16K27 / 02 by IPC. Background Technology
[0002] Currently, most inlet solenoid valves on the market control the flow rate during operation through a flow-limiting valve assembly. This assembly includes a valve seat, a fitted flow-limiting pad, and a flow-limiting column. Under different water pressures, the flow-limiting pad deforms differently depending on the height of the flow-limiting column, causing changes in the gap between the pad and the valve seat. This controls the water flow area and thus the flow rate. For inlet valves with two or more outlets, under high water pressure, water tends to rush to the farthest outlet. Therefore, the outlet farther from the inlet has a larger flow rate, while the outlet closer to the inlet has a smaller flow rate or even no flow, making it impossible to generate a stable flow rate.
[0003] For terms and knowledge, unless otherwise specified in this manual, please refer to the "IEC Dictionary of Electrical and Electronic Standards Terminology" (China Standards Press, 1st edition, 1992), "Electrical Manufacturing Technology" (Mechanical Industry Press, 1st edition, 1982), "Mechanical Engineering Handbook" and "Electrical Engineering Handbook" (Mechanical Industry Press, 1st edition, 1978 and 2nd edition, 1997), as well as the national standard GB / T21465-2008 "Valve Terminology" and the national light industry standard QB / T1291 "Solenoid Valves for Automatic Washing Machines". Utility Model Content
[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an inlet solenoid valve with a flow-limiting component, which can ensure a stable flow rate at both the distal and proximal outlets under high water pressure.
[0005] In a first aspect, this utility model provides a water inlet solenoid valve with a flow-limiting component, comprising: a valve body, a coil assembly, an opening and closing assembly, and a flow-limiting component disposed within the water inlet of the valve body. The valve body has an inlet cavity communicating with the water inlet along the water inlet direction, and a plurality of outlets at unequal distances from the water inlet are disposed on the peripheral wall of the inlet cavity. The flow-limiting component is provided with a flow-limiting rubber pad, a flow-limiting valve seat, and a flow-limiting cover in sequence along the water inlet direction. The flow-limiting valve seat has a circular base with an outer peripheral wall protruding from the outer edge of the circular base. A mounting post protrudes axially from the center of one end of the base, and a cavity with one end closed and the other end open is formed inside the mounting post. A first water passage hole penetrating the bottom of the base is formed between the outer peripheral wall and the mounting post of the base. The flow-limiting rubber pad has a mounting hole in its center, and the flow-limiting rubber pad is sleeved on the mounting post through the mounting hole. A central baffle is disposed in the center of the flow-limiting cover, and a second water passage hole is disposed outside the central baffle. The projected area of the central baffle along the central axis completely or partially covers the projected area of the first water passage hole.
[0006] The water inlet solenoid valve according to the present utility model embodiment has at least the following beneficial effects: by setting a flow limiting cover in the flow limiting component, when the water inlet solenoid valve is working under high water pressure, the high pressure water flow is blocked by the central baffle of the flow limiting cover after passing through the first water passage of the flow limiting valve seat, the water flow is buffered, and then sprayed out from the second water passage, so that the water flow entering the inner cavity of the water inlet valve becomes uniform, and a stable flow rate can be obtained at both the far end outlet and the near end outlet, so as to achieve precise control of the water inlet valve flow rate and cross flow.
[0007] According to some embodiments of this utility model, the flow-limiting cover is integrally or separately disposed at the bottom of the base of the flow-limiting valve seat.
[0008] According to some embodiments of this utility model, the outer edge of the base also has a flange protruding, and the inner wall of the flange protrudes towards the center to form a retaining ring. The flow-limiting cover is snapped between the retaining ring and the base to form an integral part. The integrated design can improve the concentricity of the flow-limiting valve seat and the flow-limiting cover.
[0009] According to some embodiments of this utility model, the inner wall of the water inlet is provided with an annular boss, the end face of the flow limiting cover has an annular convex surface, the annular convex surface is embedded in the inner wall of the annular boss, and the flow limiting valve seat axially presses the flow limiting cover to form a separate arrangement, so that the installation of the flow limiting cover is more stable.
[0010] According to some embodiments of this utility model, the bottom of the inner cavity of the mounting column is provided with several flow-limiting holes, which can balance the water inflow when the water pressure is low.
[0011] According to some embodiments of this utility model, the flow-limiting valve seat is provided with flow-limiting columns. The flow-limiting columns are arranged in groups at one end of the mounting column on the base of the flow-limiting valve seat, distributed around the center of the mounting column, and each group of flow-limiting columns has a different height. The different height dimensions of each group of flow-limiting columns result in different degrees of deformation of the flow-limiting rubber pad under different pressures, changing the cross-sectional area of the water passage gap between the bottom and the flow-limiting rubber pad, thereby controlling the inlet water flow rate.
[0012] According to some embodiments of this utility model, the inlet of the valve body is further provided with a cylindrical filter assembly, which axially presses against the flow-limiting assembly to axially limit the flow-limiting assembly. This prevents the flow rate from becoming unstable due to axial displacement of the flow-limiting assembly.
[0013] According to some embodiments of this utility model, the central baffle of the flow-limiting cover is provided with barbs on the end face opposite to the first water passage hole, which are used to puncture air bubbles in the water and reduce the noise of the flowing water. Attached Figure Description
[0014] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.
[0015] Figure 1 This is an overall schematic diagram of the water inlet solenoid valve provided in one embodiment of the present utility model;
[0016] Figure 2 yes Figure 1 A side view of the inlet solenoid valve is shown.
[0017] Figure 3 yes Figure 2 The diagram shows the AA cross-section of the inlet solenoid valve;
[0018] Figure 4 yes Figure 2 A cross-sectional view AA of another embodiment of the water inlet solenoid valve is shown;
[0019] Figure 5 yes Figure 2 The diagram shows the BB cross-section of the inlet solenoid valve;
[0020] Figure 6 yes Figure 3 A schematic diagram of the integrated current limiting component is shown.
[0021] Figure 7 yes Figure 6 A side view of the current limiting component is shown.
[0022] Figure 8 yes Figure 7The CC cross-sectional view of the current limiting component is shown;
[0023] Figure 9 yes Figure 8 A partial enlarged view A of the current limiting component is shown;
[0024] Figure 10 yes Figure 8 A partially enlarged view B of the current limiting component is shown;
[0025] Figure 11 yes Figure 6 The front view of the flow-limiting valve seat is shown;
[0026] Figure 12 yes Figure 4 The front view of the flow-limiting cover is shown;
[0027] Figure 13 yes Figure 3 or Figure 4 The front view of the flow-limiting adhesive pad is shown;
[0028] Figure 14 yes Figure 3 A partial enlarged view C of the current limiting component is shown.
[0029] Icon labels:
[0030] Valve body 100; Inlet 110; Annular boss 111; Outlet 120; Filter assembly 130; Inlet chamber 140; Coil assembly 200; Opening and closing assembly 300; Flow limiting assembly 400; Flow limiting gasket 410; Mounting hole 411; Flow limiting valve seat 420; Base 421; First water passage hole 422; Mounting post 423; Snap ring 424; Flow limiting hole 425; Flow limiting post 426; Flow limiting cover 430; Second water passage hole 431; Center baffle 432; Annular convex surface 433; Barb 434. Detailed Implementation
[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0032] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0033] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.
[0034] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0035] Reference Figures 1 to 7 and Figures 11 to 13 The inlet solenoid valve includes: a valve body 100, a coil assembly 200, an opening and closing assembly 300, and a flow limiting assembly 400 disposed within the inlet 110 of the valve body 100. The valve body 100 has an inlet chamber 140 communicating with the inlet 110 along the water inlet direction. The peripheral wall of the inlet chamber 140 has multiple outlets 120 communicating with the inlet 110, and the distance between each outlet 120 and the inlet 110 is unequal. The flow limiting assembly 400 includes, in sequence along the water inlet direction, a flow limiting gasket 410, a flow limiting valve seat 420, and a flow limiting cover 430. The flow-limiting valve seat 420 has a circular base 421. The outer edge of the circular base 421 has a raised outer peripheral wall. A mounting post 423 is raised axially at the center of one end of the base 421. The mounting post 423 forms a cavity with one end closed and the other end open. A first water passage hole 422 is formed between the outer peripheral wall of the base 421 and the mounting post 423, which passes through the bottom of the base 421. Several reinforcing ribs are provided around the first water passage hole 422 and connected to the mounting post 423 to enhance the stability of the base 421 and the mounting post 423.
[0036] It is understood that multiple outlets 120 can be arranged side by side or inclined along the axis of the inlet chamber. The distance between each outlet 120 and the inlet 110 is not equal. The number of outlets 120 can be set as needed. In this embodiment, two outlets are preferred.
[0037] The flow-limiting pad 410 is an elastic gasket, generally made of materials such as rubber or silicone, with a through mounting hole 411 in the center. The flow-limiting pad 410 is fitted onto the mounting post 423 through the mounting hole 411. The flow-limiting cover 430 has a central baffle 432 in the center. The projected area of the central baffle 432 along the central axis completely or partially covers the projected area of the first water passage hole 422. Several evenly distributed second water passage holes 431 are provided on the outer side of the central baffle 432 along the circumferential direction of the axis. In other embodiments, the second water passage hole 431 can also be a separately provided annular through hole. For example, the inlet solenoid valve is provided with multiple parallel outlets 120. The flow limiting component 400 is provided with a flow limiting pad 410, a flow limiting valve seat 420, and a flow limiting cover 430 in sequence along the water inlet direction. When the inlet solenoid valve is working under high water pressure, the high-pressure water flow enters from the inlet 110, flows through the flow limiting valve seat 420, and is ejected from the first water passage 422. The high-pressure water flow is buffered by the central baffle 432 of the flow limiting cover 430, and then flows out from the second water passage 431. At this time, the water flow becomes uniform and will not spray directly to the far outlet 120, so that both the near and far outlets 120 can obtain a stable flow rate. For example, when the water pressure is 3 bar, the cross flow rate of the near outlet 120 is 3.508 L / min, and the flow rate of the far outlet 120 is 3.204 L / min. Under the same water pressure, the flow rates at the near and far outlets 120 are similar, resulting in a balanced and stable water output.
[0038] Understandably, the more the projected area of the central baffle 432 along the central axis covers the projected area of the first water passage hole 422, the better the buffering effect will be. This can be set according to actual needs.
[0039] The flow-limiting cover 430 can be either a single unit or a separate unit. For details on the single unit design, please refer to [link / reference needed]. Figures 8 to 9 The flow-limiting valve seat 420 has a flange protruding from the outer edge of its base 421. The inner wall of the flange tip protrudes towards the center to form a retaining ring 424. The flow-limiting cover 430 is engaged between the retaining ring 424 and the base 421, making the flow-limiting cover 430 and the flow-limiting valve seat 420 a single unit. This integrated design improves the concentricity of the flow-limiting valve seat 420 and the flow-limiting cover 430, resulting in a more balanced flow rate and more stable flow through each orifice during water passage. For a separate design, please refer to [link to documentation]. Figure 3 , Figure 12 and Figure 14 The inlet 110 has an annular boss 111 on its inner wall, and the flow limiting cover 430 has an annular protrusion 433 on its end face. The annular protrusion 433 is embedded in the inner wall of the annular boss 111, and the flow limiting valve seat 420 presses the flow limiting cover 430 to make the flow limiting cover 430 more securely installed.
[0040] refer to Figure 8A flow-limiting orifice 425 is provided at the bottom of the inner cavity of the mounting column 423. In this embodiment, the flow-limiting orifice 425 is evenly distributed circumferentially to balance the inlet water flow rate under low water pressure. Part of the inlet water flows through the flow-limiting orifice 425, and another part flows out from the first water passage hole 422 through the water passage gap between the flow-limiting valve seat 420 and the flow-limiting rubber pad 410.
[0041] Understandably, the number of flow restricting orifices 425 can be set to multiple depending on the situation, and the preferred number of flow restricting orifices 425 is 8.
[0042] refer to Figure 8 The flow-limiting valve seat 420 is also equipped with flow-limiting columns 426. These columns are arranged in groups at one end of the mounting column 423 on the base 421 of the flow-limiting valve seat 420, distributed around the center of the mounting column 423. Each group of flow-limiting columns 426 has a different height. The different heights of the flow-limiting columns 426 result in different degrees of deformation of the flow-limiting gasket 410 under different pressures, changing the cross-sectional area of the water passage gap between the flow-limiting valve seat 420 and the flow-limiting gasket 410, thereby controlling the water flow rate. Each group of flow-limiting columns 426 includes four columns 426 of different heights, evenly spaced circumferentially around the center of the mounting column 423 to prevent the flow-limiting gasket 410 from tilting.
[0043] Understandably, the number and height of each set of flow-limiting columns 426 can be set according to requirements to achieve more precise flow control. No specific limit is made here regarding the number and height of the flow-limiting columns 426.
[0044] refer to Figures 2 to 4 The valve body 100 is also provided with a cylindrical filter assembly 130 at the inlet 110. The filter assembly 130 axially presses the flow limiting assembly 400 to limit the flow limiting assembly 400 axially, preventing the flow limiting assembly 400 from moving axially and causing unstable flow. At the same time, it filters impurities in the flowing water to prevent impurities from entering.
[0045] refer to Figure 10 and Figure 12 The central baffle 432 of the flow-limiting cover 430 has a pointed barb 434 on its end face opposite to the first water passage 422. The barb 434 can puncture air bubbles in the water and reduce noise. Specifically, air bubbles are inevitably generated during water flow. The presence of air bubbles can cause noise when the water inlet solenoid valve is working. By setting the barb 434 on the central baffle 432, the air bubbles can be punctured by the barb 434 when the water flows through the first water passage 422, thereby reducing the noise when the water inlet solenoid valve is working.
[0046] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A water inlet solenoid valve including a flow limiting component (400), comprising: The valve body (100), coil assembly (200), opening and closing assembly (300), and flow limiting assembly (400) disposed in the inlet (110) of the valve body (100) are characterized in that the valve body (100) is provided with an inlet cavity (140) communicating with the inlet (110) along the water inlet direction, and a plurality of outlets (120) at different distances from the inlet (110) are provided on the peripheral wall of the inlet cavity (140). The flow limiting assembly (400) is provided with a flow limiting pad (410), a flow limiting valve seat (420), and a flow limiting cover (430) in sequence along the water inlet direction. The flow limiting valve seat (420) has a circular base (421), the outer edge of the circular base (421) protruding with an outer peripheral wall, and the center of one end of the base (421) along the... An axially protruding mounting post (423) is provided, and a cavity with one end closed and the other end open is formed inside the mounting post (423). A first water passage hole (422) penetrating the bottom of the base (421) is formed between the outer peripheral wall and the mounting post (423). A mounting hole (411) is provided in the center of the flow-limiting rubber pad (410), and the flow-limiting rubber pad (410) is sleeved on the mounting post (423) through the mounting hole (411). A central baffle (432) is provided in the center of the flow-limiting cover (430), and a second water passage hole (431) is provided on the outside of the central baffle (432). The projected area of the central baffle (432) along the central axis completely or partially covers the projected area of the first water passage hole (422).
2. The inlet solenoid valve according to claim 1, characterized in that, The flow limiting cover (430) is integrally or separately disposed at the bottom of the base (421) of the flow limiting valve seat (420).
3. The inlet solenoid valve according to claim 2, characterized in that, The outer edge of the base (421) also has a flange protruding, and the inner wall of the flange protrudes towards the center to form a retaining ring (424). The flow-limiting cover (430) is snapped between the retaining ring (424) and the base (421) to form an integral part.
4. The inlet solenoid valve according to claim 2, characterized in that, The inner wall of the inlet (110) is provided with an annular boss (111), and the end face of the flow limiting cover (430) has an annular convex surface (433). The annular convex surface (433) is embedded in the inner wall of the annular boss (111), and the flow limiting valve seat (420) axially presses the flow limiting cover (430) to form a separate arrangement.
5. The inlet solenoid valve according to claim 1, characterized in that, The bottom of the inner cavity of the mounting post (423) is provided with several flow-limiting holes (425).
6. The inlet solenoid valve according to claim 1, characterized in that, The flow limiting valve seat (420) is provided with flow limiting columns (426). The flow limiting columns (426) are arranged in groups at one end of the mounting column (423) on the base (421) of the flow limiting valve seat (420), and are distributed around the center of the mounting column (423). The height of each group of flow limiting columns (426) is different.
7. The inlet solenoid valve according to claim 1, characterized in that, The inlet (110) of the valve body (100) is also provided with a cylindrical filter assembly (130), which axially presses the flow limiting assembly (400) to limit the flow limiting assembly (400) axially.
8. The inlet solenoid valve according to claim 1, characterized in that, The center baffle (432) of the flow restrictor (430) is provided with barbs (434) on the end face opposite to the first water passage (422).