A noiseless solenoid valve

Abstract

This invention provides a noiseless solenoid valve, comprising a valve body, an electromagnetic control device, and a sealing assembly. The valve body has an inlet channel, an outlet channel, and a valve chamber. The sealing assembly, in conjunction with the electromagnetic control device, enables the connection or blockage between the inlet and outlet channels. The sealing assembly includes a baffle plate. The valve chamber includes a first valve chamber located above the baffle plate, and a second and third valve chamber located below the baffle plate and separated by a sealing seat on the valve body. A baffle plate connected to the sealing assembly is disposed in the third valve chamber, which communicates with the outlet channel. When the solenoid valve is open, the water flows through the guide channel on the baffle plate before flowing into the outlet, thus dispersing the water flow and effectively reducing noise. Furthermore, the water flow creates a back pressure between the baffle plate and the third valve chamber, allowing the sealing assembly to close slowly, preventing water hammer and valve-closing noise caused by closing too quickly, thereby effectively improving product performance.

Description

Technical Field

[0001] This invention relates to the field of valve technology, specifically a noiseless solenoid valve. Background Technology

[0002] Currently, there are many types of solenoid valves, but their basic principles are the same. Solenoid inlet valves have a compact structure, are easy to control, and are widely used in many home appliance products, such as washing machines, water dispensers, water purifiers, smart toilets, and smart showers. The structure of existing solenoid valves on the market is basically composed of components such as a coil, valve core sleeve, baffle plate, sealing ring, spring, valve core, rubber core, and valve body. Their working principle is based on the water pressure at the inlet of the solenoid valve, which acts on the sealing ring through the side holes of the baffle plate inside the valve to achieve a seal. When the coil is energized, it generates electromagnetic force, lifting the valve core. Water pressure is released from the center hole of the baffle plate, making the pressure on the back of the sealing ring less than the inlet pressure, causing the sealing ring to lift and thus opening the solenoid valve. However, with this type of solenoid valve, the sound of flowing water increases with increasing water pressure. Furthermore, some solenoid valves under municipal tap water pressure also produce a "plop plop" noise when opening and closing the valve, and this noise increases with increasing pressure. Therefore, most customers find this sound of flowing water or the "plop plop" noise very uncomfortable during use. Therefore, designing a valve that optimizes product performance, improves water flow noise, and reduces manufacturing costs is a major current challenge.

[0003] The existing solenoid valves on the market are basically composed of components such as coil, valve core sleeve, baffle plate, sealing ring, spring, valve core, rubber core, and valve body. Their structure increases the height of the sealing port or adds limiting ribs to the baffle plate. Their working principle is to control the water flow noise of the solenoid valve by controlling the opening height of the sealing ring. However, this type of solenoid valve only plays a switching control role. Its maximum effect is to reduce the "plop plop" noise when switching the valve under municipal tap water pressure, but it cannot solve the problem of water flow noise or valve switching noise under high water pressure (0.8MPa). Therefore, the problems of water flow noise or switching noise of existing solenoid valve structures have not been completely solved. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a noiseless solenoid valve. The technical solution adopted by this invention is as follows:

[0005] A noiseless solenoid valve includes a valve body, an electromagnetic control device, and a sealing assembly. The valve body has an inlet channel, an outlet channel, and a valve chamber. The electromagnetic control device includes a coil assembly, a spring, and a valve core assembly. The sealing assembly cooperates with the electromagnetic control device to achieve the connection or blockage between the inlet channel and the outlet channel. The sealing assembly includes a baffle plate. The valve chamber includes a first valve chamber located above the baffle plate, and a second valve chamber and a third valve chamber located below the baffle plate and separated by a sealing seat on the valve body. The third valve chamber is connected to the outlet channel, and the second valve chamber is connected to the inlet channel to form an inlet chamber. The baffle plate has a side hole connecting the second valve chamber and the first valve chamber, and a pressure relief hole connecting the first valve chamber and the third valve chamber. The pressure relief hole is located on a central hole seat in the middle of the baffle plate. The valve also includes a flow-blocking assembly connected to the baffle plate. The flow-blocking assembly includes a baffle plate with a flow-guiding channel extending into the third valve chamber and contacting at least a portion of the inner wall of the third valve chamber.

[0006] With the above structure, the baffle plate moves together with the baffle plate when it opens or closes, which can effectively remove foreign objects and scale from the water outlet channel. When the solenoid valve is opened, the water flow does not flow directly out of the outlet like a normal solenoid valve, but flows through the guide channel on the baffle plate before flowing into the outlet. This disperses the water flow and effectively reduces noise. In addition, the baffle plate is designed in the water outlet channel. When the solenoid valve is opened, the water flow forms a back pressure between the baffle plate and the third valve chamber, which allows the sealing component to close slowly. This prevents water hammer effect caused by closing too quickly and the valve closing noise, which can effectively improve product performance.

[0007] Preferably, the baffle plate forms a flow guiding channel with the inner wall of the third valve chamber through several grooves on its outer wall. When the sealing assembly and the electromagnetic control device work together to achieve the connection between the water inlet channel and the water outlet channel, the fluid in the second valve chamber enters the third valve chamber and flows to the water outlet channel through the grooves. During this process, the grooves on the baffle plate will divide the single water flow into multiple small water flows before flowing into the water outlet, thus effectively reducing the abnormal noise of the switching valve and the noise of the water flow.

[0008] Preferably, the flow-blocking assembly further includes a fixed seat connected to the flow-blocking plate. The fixed seat is connected to the guide cylinder on the baffle plate. The guide cylinder has an installation hole. The outer periphery of the fixed seat fits into the inner wall of the installation hole, and the installation hole communicates with the pressure relief hole. A pressure relief channel is provided through the fixed seat, and the pressure relief channel communicates with the pressure relief hole and the third valve chamber.

[0009] Within the mounting hole, the pressure relief channel is spaced a distance from the pressure relief hole, creating a buffer zone between the fixing seat and the pressure relief hole. After the baffle plate is assembled with the baffle plate, a buffer zone is formed within the mounting hole of the guide cylinder. Thus, after the water flows through the pressure relief hole, the water flow first fills the buffer zone before passing through the pressure relief channel on the fixing seat. This effectively reduces the noise of high-pressure water flow after the water flow is restricted in the buffer zone.

[0010] It also includes a water-blocking wall arranged in a ring or fan-shaped manner inside the second valve chamber, wherein the water-blocking wall is spaced a certain distance from the lower end face of the water baffle plate; in order to avoid blocking the connection between the second valve chamber and the water inlet channel, the water-blocking wall can be arranged in a fan-shaped manner to leave a gap at the connection between the second valve chamber and the water inlet channel; if the height of the water-blocking wall does not affect the connection between the second valve chamber and the water inlet channel, it can be arranged in a ring.

[0011] By installing a water-blocking wall in the second valve chamber, the water storage space in the valve chamber is reduced compared to a regular solenoid valve. This reduces the water flow velocity within the valve chamber, thus minimizing the abnormal noise caused by the rapid water flow when the solenoid valve closes, which is often accompanied by the sealing ring assembly shutting down. This effectively solves the "plop plop" noise during valve opening and closing.

[0012] Preferably, the water-blocking wall is arranged in a fan-shaped ring inside the second valve chamber, and a notch is formed at the position where the second valve chamber connects with the water inlet channel, so that the fluid enters from the water inlet channel through the notch between the water-blocking wall and the water-retaining plate.

[0013] The sealing assembly also includes a sealing ring. The positioning part of the baffle plate passes through the sealing ring to limit the fit between the two. The specific fit can be as follows: the positioning part includes a positioning post and a positioning head. The positioning post passes through a positioning hole located on the sealing ring and is connected to the positioning head. The diameter of the positioning head is larger than the diameter of the positioning hole, so that it cannot come out of the positioning hole, thereby limiting the sealing ring between the baffle plate body and the positioning head. The water-blocking wall is also provided with a positioning groove. The positioning part extends into the positioning groove after passing through the sealing ring.

[0014] Preferably, the sealing assembly further includes a sealing ring that mates with the baffle plate. The upper surface of the sealing seat is the sealing surface, which is planar and contacts the sealing surface of the sealing ring when the solenoid valve is closed. Compared with the arc-shaped sealing port of a common solenoid valve, the planar structure of the sealing surface has several advantages. First, it reduces the flow velocity of tap water when passing through the sealing surface. Second, it increases the contact area between the sealing ring and the sealing surface when the sealing ring is closed, reducing the contact pressure and thus reducing wear. This significantly improves the product's service life. Third, the arc-shaped sealing surface forms a flared opening at the rounded corner when it mates with the sealing ring, which can easily generate noise when water flows through. With a planar structure, the sealing ring mates with the sealing surface in a parallel manner, resulting in a uniform and stable closing gap, effectively reducing noise during valve opening and closing.

[0015] The beneficial effects of the present invention are as follows:

[0016] Firstly, by setting a baffle plate connected to the sealing assembly in the third valve chamber that is connected to the water outlet channel, the baffle plate moves together with the baffle plate when it opens or closes to remove foreign objects and scale on the water outlet channel. When the solenoid valve is opened, the water flows through the guide channel on the baffle plate and then into the water outlet, so that the water flow is dispersed and noise can be effectively reduced.

[0017] Secondly, a baffle plate is designed in the third valve chamber. After the solenoid valve is opened, the water flow forms a back pressure between the baffle plate and the third valve chamber, allowing the sealing component to close slowly when closed. This prevents water hammer effect caused by closing too quickly and reduces valve noise, which can effectively improve product performance.

[0018] Thirdly, this structure does not increase difficulties in production and assembly, and the requirements for size control are not high, resulting in a lower production scrap rate, which can reduce production costs and has strong practical value. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of the present invention.

[0020] Figure 1 This is a schematic diagram of the exploded structure of Example 1;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of Example 1;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the water-retaining plate in Example 1;

[0023] Figure 4 A schematic diagram showing the working state of the water baffle plate and the flow baffle assembly;

[0024] Figure 5 This is a schematic diagram of the flow-blocking component structure in Example 1;

[0025] Figure 6 This is a schematic diagram of the cross-sectional structure of the flow-blocking component;

[0026] Figure 7 Top view of the airflow baffle assembly;

[0027] Figure 8 This is a top view of the sealing seat of the valve body in Example 1;

[0028] Figure 9 This is a schematic diagram of the cross-sectional structure of the water sealing seat;

[0029] Figure 10 This is a schematic diagram of the sealing ring assembly in Example 1;

[0030] Figure 11 This is a schematic diagram of the water-retaining plate structure in Example 1;

[0031] Figure 12 This is a schematic diagram of the sealing ring structure in Example 1;

[0032] In the diagram, 1-valve body, 11-inlet channel, 12-outlet channel, 13-valve chamber, 1301-first valve chamber, 1302-second valve chamber, 1303-third valve chamber, 131-water-blocking wall, 1311-notch, 1312-positioning groove, 132-sealing seat, 1321-sealing port, 13211-sealing surface, 1322-outlet channel, 14-inlet chamber, 2-coil assembly, 3-valve core assembly, 4-sealing assembly, 41-water baffle plate, 411-side hole, 412-center hole seat, 4121-pressure relief hole, 413-guide cylinder, 4131-mounting hole, 414-positioning part, 42-sealing ring, 5-spring, 6-flow-blocking assembly, 61-fixed seat, 611-pressure relief channel, 62-flow-blocking plate, 621-groove, 7-buffer area. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] It should be noted that all uses of "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of the present invention. Subsequent embodiments will not explain this in detail.

[0035] The directional and positional terms used in this invention, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for illustrating and understanding this invention, and not for limiting the scope of protection of this invention.

[0036] Example 1

[0037] like Figure 1-4As shown, a noiseless solenoid valve includes a valve body 1, an electromagnetic control device, and a sealing assembly 4. The valve body 1 is provided with an inlet channel 11, an outlet channel 12, and a valve chamber 13. The electromagnetic control device includes a coil assembly 2, a spring 5, and a valve core assembly 3. The sealing assembly 4 cooperates with the electromagnetic control device to realize the connection or blockage between the inlet channel 11 and the outlet channel 12. The sealing assembly 4 includes a baffle plate 41, and the valve chamber 13 includes a first valve chamber 1301 located above the baffle plate 41, and a second valve chamber 1302 and a third valve chamber 1302 located below the baffle plate 41 and separated by a sealing seat 132 on the valve body 1. 03, the third valve chamber 1303 is connected to the water outlet channel 12, and the second valve chamber 1302 is connected to the water inlet channel 11 to form the water inlet chamber 14; the baffle plate 41 is provided with a side hole 411 connecting the second valve chamber 1302 and the first valve chamber 1301, and a pressure relief hole 4121 connecting the first valve chamber 1301 and the third valve chamber 1303, the pressure relief hole 4121 being opened in the middle hole seat 412 of the baffle plate 41; it also includes a flow-blocking assembly 6 connected to the baffle plate 41, the flow-blocking assembly 6 including a flow-blocking plate 62, the flow-blocking plate 62 extending into the third valve chamber 1303 and contacting and cooperating with part of the inner wall of the third valve chamber 1303;

[0038] like Figure 5-7 As shown, the baffle plate 62 forms a flow guiding channel with the inner wall of the third valve chamber 1303 through a plurality of grooves 621 provided on its outer wall. When the sealing assembly 4 cooperates with the electromagnetic control device to realize the connection between the water inlet channel 11 and the water outlet channel 12, the fluid in the second valve chamber 1302 enters the third valve chamber 1303 and flows to the water outlet channel 12 through the aforementioned grooves 621.

[0039] The flow-blocking assembly 6 also includes a fixed base 61 connected to the flow-blocking plate 62, and the fixed base 61 is connected to the guide cylinder 413 on the water-blocking plate 41.

[0040] The guide cylinder 413 has a mounting hole 4131, and the outer periphery of the fixing seat 61 is fitted into the inner wall of the mounting hole 4131, as shown in the following figure. Figure 4 The outer periphery of the fixing seat 61 is concave and convex and the inner wall of the mounting hole 4131 is concave and convex and interlocked, and the mounting hole 4131 is connected to the pressure relief hole 4121.

[0041] A pressure relief channel 611 is provided through the fixed base 61, and the pressure relief channel 611 connects the pressure relief hole 4121 and the third valve chamber 1303.

[0042] Within the mounting hole 4131, the pressure relief channel 611 is spaced apart from the pressure relief hole 4121, so that a buffer area 7 is formed between the fixing seat 61 and the pressure relief hole 4121.

[0043] like Figure 8-9 As shown, it also includes a water-blocking wall 131 arranged in a ring or fan-shaped manner within the second valve chamber 1302. The water-blocking wall 131 is spaced a certain distance from the lower end face of the water baffle plate 41. To avoid blocking the connection between the second valve chamber 1302 and the water inlet channel 11, the water-blocking wall 131 can be arranged in a fan-shaped manner to leave a gap at the connection between the second valve chamber 1302 and the water inlet channel 11. If the height of the water-blocking wall 131 does not affect the connection between the second valve chamber 1302 and the water inlet channel 11, it can be arranged in a ring.

[0044] In this embodiment, the water-blocking wall 131 is arranged in a fan-shaped ring inside the second valve chamber 1302, and a notch 1311 is formed at the position where the second valve chamber 1302 communicates with the water inlet channel 11, so that the fluid enters from the water inlet channel 11 through the notch 1311 between the water-blocking wall 131 and the water baffle plate 41.

[0045] Reference Figure 10-12 The sealing assembly also includes a sealing ring 42. The positioning part 414 of the water baffle 41 passes through the sealing ring 42 to limit the two to fit together. In this embodiment, the specific fitting method is as follows: the positioning part 414 includes a positioning post and a positioning head. The positioning post passes through the positioning hole located on the sealing ring and is connected to the positioning head. The diameter of the positioning head is larger than the diameter of the positioning hole, so that it cannot be removed from the positioning hole, thereby limiting the sealing ring 42 between the water baffle 41 body and the positioning head. The water blocking wall 131 is also provided with a positioning groove 1312. The positioning part 414 passes through the sealing ring 42 and extends into the positioning groove 1312.

[0046] The sealing assembly also includes a sealing ring 42 that cooperates with the baffle plate 41. The sealing seat 132 is provided with a sealing port 1321, the upper end of which is a sealing surface 13211. The sealing surface 13211 is planar, and the sealing surface 13211 contacts and cooperates with the sealing surface 421 of the sealing ring 42 when the solenoid valve is closed.

[0047] The above description discloses only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A noiseless solenoid valve, comprising a valve body (1), an electromagnetic control device, and a sealing assembly (4), wherein the valve body (1) is provided with an inlet channel (11), an outlet channel (12), and a valve chamber (13), and the sealing assembly (4) cooperates with the electromagnetic control device to realize the connection or blockage between the inlet channel (11) and the outlet channel (12), characterized in that: The sealing assembly (4) includes a baffle plate (41), and the valve chamber (13) includes a first valve chamber (1301) located above the baffle plate (41), and a second valve chamber (1302) and a third valve chamber (1303) located below the baffle plate (41) and separated by a sealing seat (132) on the valve body (1). The third valve chamber (1303) is connected to the water outlet channel (12), and the second valve chamber (1302) is connected to the water inlet channel (11) to form a water inlet chamber (14). The baffle plate (41) is provided with a side hole (411) connecting the second valve chamber (1302) and the first valve chamber (1301), and a pressure relief hole (4121) connecting the first valve chamber (1301) and the third valve chamber (1303). It also includes a flow-blocking assembly (6) connected to the baffle plate (41), the flow-blocking assembly (6) including a baffle plate (62) extending into the third valve chamber (1303), the baffle plate (62) being provided with a flow-guiding channel, and the baffle plate (62) contacting and engaging with at least a portion of the inner wall of the third valve chamber (1303); The baffle (62) forms a flow channel by cooperating with the inner wall of the third valve chamber (1303) through a number of grooves (621) provided on its outer wall; The flow-blocking assembly (6) also includes a fixed seat (61) connected to the flow-blocking plate (62), and the fixed seat (61) is connected to the guide cylinder (413) on the water-blocking plate (41).

2. The noiseless solenoid valve according to claim 1, characterized in that, The guide cylinder (413) has an installation hole (4131), the outer periphery of the fixing seat (61) is fitted with the inner wall of the installation hole (4131), and the installation hole (4131) is connected to the pressure relief hole (4121).

3. The noiseless solenoid valve according to claim 2, characterized in that, A pressure relief channel (611) is provided through the fixed base (61), and the pressure relief channel (611) connects the pressure relief hole (4121) and the third valve chamber (1303).

4. The noiseless solenoid valve according to claim 3, characterized in that, Within the mounting hole (4131), the pressure relief channel (611) is spaced apart from the pressure relief hole (4121) by a certain distance, so that a buffer area (7) is formed between the fixing seat (61) and the pressure relief hole (4121).

5. The noiseless solenoid valve according to claim 1, characterized in that: It also includes a water-blocking wall (131) arranged in a ring or fan-shaped manner in the second valve chamber (1302), wherein the water-blocking wall (131) is spaced a certain distance from the lower end face of the water baffle (41).

6. The noiseless solenoid valve according to claim 5, characterized in that, The water-blocking wall (131) is arranged in a fan-shaped ring inside the second valve chamber (1302), and a notch (1311) is formed at the position where the second valve chamber (1302) communicates with the water inlet channel (11).

7. The noiseless solenoid valve according to claim 5, characterized in that: The sealing assembly also includes a sealing ring (42), and the positioning part (414) of the water baffle (41) passes through the sealing ring (42) to limit the two to fit together. The water blocking wall (131) is also provided with a positioning groove (1312), and the positioning part (414) extends into the positioning groove (1312) after passing through the sealing ring (42).

8. The noiseless solenoid valve according to claim 1, characterized in that: The sealing assembly also includes a sealing ring (42) that cooperates with the baffle plate (41). The upper surface of the sealing seat (132) is flat, and the upper surface of the sealing seat (132) contacts and cooperates with the sealing ring (42) when the solenoid valve is closed.

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