Silent electromagnetic valve

Abstract

The utility model relates to the technical field of air path pipe valve parts, specifically discloses a mute solenoid valve, which comprises a valve body, the valve body is equipped with a valve cavity and a valve port communicating with the valve cavity, a valve core, the valve core is slidably arranged in the valve cavity and is arranged opposite to the valve port, wherein the valve core comprises a rigid main body, and the rigid main body is provided with an outwardly protruding elastic component opposite to the end face of the valve port, the mute solenoid valve can effectively solve the problem that the existing solenoid valve is prone to noise and vibration caused by rigid collision.

Description

Technical Field

[0001] This utility model relates to the field of gas pipeline valve technology, and in particular to a silent solenoid valve. Background Technology

[0002] As a core actuator in fluid control, the reliability of solenoid valves and their operating noise level directly affect equipment performance and user experience. In traditional air valves, the valve core and body make direct, rigid contact under electromagnetic force during opening and closing. Especially in high-speed applications, this rigid impact generates significant instantaneous impact noise. This noise issue is particularly pronounced in applications requiring high quietness, such as airbag mattresses, severely hindering product quality and user satisfaction.

[0003] Therefore, existing solenoid valves need to be improved to solve the problem of noise and vibration caused by rigid impacts.

[0004] The information disclosed in this background section is included only to enhance the understanding of the context of this disclosure, and therefore may contain information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] One objective of this invention is to provide a silent solenoid valve that can effectively solve the problem that existing solenoid valves are prone to noise and vibration due to rigid collisions.

[0006] To achieve the above objectives, this utility model provides a silent solenoid valve, comprising:

[0007] A valve body, wherein the valve body is provided with a valve cavity and a valve port communicating with the valve cavity;

[0008] A valve core, which is slidably disposed within the valve cavity and positioned directly opposite the valve port;

[0009] The valve core includes a rigid body, and the rigid body has an outwardly protruding elastic component at least on the end face facing the valve port.

[0010] Optionally, the end face of the rigid body is provided with an accommodating groove with an opening structure;

[0011] The elastic component includes an internal elastic element located within the receiving groove, and an externally protruding elastic element that abuts against the internal elastic element and protrudes outward through the opening of the receiving groove.

[0012] The hardness of the convex elastic element is greater than that of the internal elastic element.

[0013] Optionally, the internal elastic element includes a silicone block with a spring cavity and a buffer spring located within the spring cavity.

[0014] Optionally, the convex elastic element is a rubber block.

[0015] Optionally, the elastic components are provided at both ends of the rigid body.

[0016] Optionally, a coil is provided inside the valve body;

[0017] The coil is arranged around the valve cavity and is used to drive the rigid body to slide away from the valve port when energized, so as to open the valve port.

[0018] Optionally, a return spring is fitted at the end of the rigid body away from the valve port;

[0019] The return spring is used to drive the valve core to slide towards the valve port to block the valve port.

[0020] Optionally, a limiting block is provided at the end of the valve cavity away from the valve port, and the limiting block abuts against the end of the return spring away from the valve port.

[0021] Optionally, the limiting block is threadedly sealed to the valve body.

[0022] Optionally, the valve body is further provided with an air inlet channel communicating with an air inlet to the valve cavity and an air outlet channel communicating with an air outlet to the valve cavity;

[0023] The valve port includes the air inlet and / or the air outlet.

[0024] The beneficial effects of this utility model are as follows: It provides a silent solenoid valve in which, when the valve core is driven by electromagnetic force to contact the valve body, the elastic component (such as rubber or silicone material) will preferentially contact the valve body. The elastic material absorbs the impact energy through its own deformation at the moment of collision, transforming the "hard-on-hard" collision between rigid components (between the valve body and the rigid main body) into a flexible buffering process.

[0025] This buffering effect significantly prolongs the duration of the collision, dispersing and weakening the impact force, thus avoiding the high-frequency noise generated by instantaneous rigid collisions in traditional designs. Simultaneously, the high damping properties of the elastic material can quickly dissipate the vibration energy generated by the collision, effectively suppressing valve core rebound and subsequent aftershocks, and blocking the path of vibration transmission outward through the valve body.

[0026] Furthermore, during the valve closing phase, the continuous deformation of the elastic component due to pressure allows it to adaptively conform to the valve port, improving sealing reliability. The overall design, employing a "softness overcoming rigidity" approach, achieves systematic control of noise and vibration while maintaining the valve's rapid response.

[0027] Therefore, the silent solenoid valve provided by this utility model can effectively solve the problem that existing solenoid valves are prone to noise and vibration due to rigid collisions. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the structure of a single-sealed silent solenoid valve provided for an embodiment;

[0030] Figure 2 A schematic diagram of the structure of the double-sealed silent solenoid valve provided for the embodiment.

[0031] In the picture:

[0032] 1. Valve body; 101. Valve chamber; 102. Inlet passage; 1021. Inlet; 103. Outlet passage; 1031. Outlet;

[0033] 2. Valve core; 201. Rigid body; 202. Elastic component; 2021. Internal elastic element; 2021a. Silicone block; 2021b. Buffer spring; 2022. Outwardly protruding elastic element;

[0034] 3. Coil;

[0035] 4. Return spring;

[0036] 5. Limiting block. Detailed Implementation

[0037] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this utility model. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0038] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0039] In the description of this utility model, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" logical relationship.

[0040] In this invention, terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy, or order between these entities or operations.

[0041] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this invention is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0042] Similar to the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0043] In the description of the embodiments of this utility model, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the convenience of describing the specific embodiments of this utility model or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0044] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this utility model, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this utility model pertains, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0045] See Figure 1 This utility model provides a silent solenoid valve, including a valve body 1 and a valve core 2.

[0046] The valve body 1 is provided with a valve cavity 101 and a valve port communicating with the valve cavity 101. The valve body 1 is also provided with an air inlet channel 102 communicating with an air inlet 1021 of the valve cavity 101 and an air outlet channel 103 communicating with an air outlet 1031 of the valve cavity 101; wherein, the valve port includes the air inlet 1021 and / or the air outlet 1031.

[0047] It should be noted that, see Figure 2 When the valve port includes both the air inlet 1021 and the air outlet 1031, the air inlet 1021 and the air outlet 1031 are located at the same end of the valve cavity 101, and the end face of the valve core 2 facing the air inlet 1021 and the air outlet 1031 is larger, so that the end face of the valve core 2 can simultaneously seal or open the air inlet 1021 and the air outlet 1031.

[0048] The valve core 2 is slidably disposed within the valve cavity 101 and is positioned directly opposite the valve port. Specifically, the valve core 2 includes a rigid body 201, and the rigid body 201 has an outwardly protruding elastic component 202 on at least the end face facing the valve port.

[0049] The core innovation of the silent solenoid valve provided in this embodiment lies in the elastic component 202 added to the end of the valve core 2. When the valve core 2 is driven by electromagnetic force to contact the valve body 1, the elastic component 202 (e.g., made of rubber or silicone) will preferentially contact the valve body 1. The elastic material absorbs the impact energy through its own deformation at the moment of impact, transforming the "hard-on-hard" collision between rigid components (between the valve body 1 and the rigid main body 201) into a flexible buffering process.

[0050] This buffering effect significantly prolongs the duration of the collision, dispersing and weakening the impact force, thus avoiding the high-frequency noise generated by instantaneous rigid collisions in traditional designs. At the same time, the high damping characteristics of the elastic material can quickly dissipate the vibration energy generated by the collision, effectively suppressing the rebound of valve core 2 and subsequent aftershocks, and blocking the path of vibration transmission outward through valve body 1.

[0051] Furthermore, during the valve closing phase, the continuous deformation of the elastic component 202 due to pressure allows it to adaptively conform to the valve port, improving sealing reliability. The overall design, employing a "softness overcoming rigidity" approach, achieves systematic control of noise and vibration while maintaining the valve's rapid response.

[0052] Therefore, the silent solenoid valve provided by this utility model can effectively solve the problem that existing solenoid valves are prone to noise and vibration due to rigid collisions.

[0053] Optionally, the rigid body 201 has an open receiving groove at its end face; the elastic component 202 includes an inner elastic element 2021 located within the receiving groove, and an outer convex elastic element 2022 abutting against the inner elastic element 2021 and protruding outward through the opening of the receiving groove. The hardness of the outer convex elastic element 2022 is greater than the hardness of the inner elastic element 2021.

[0054] The high hardness of the convex elastic element 2022 ensures the flatness of the sealing surface when in contact with the valve port, while the low hardness of the internal elastic element 2021 provides the main impact energy absorption function. The hardness difference between the two forms a step-by-step buffering mechanism, which not only ensures the reliability of the seal, but also prolongs the time gradient of impact energy absorption.

[0055] In this embodiment, the internal elastic element 2021 includes a silicone block 2021a with an internal spring cavity and a buffer spring 2021b located in the spring cavity. Optionally, the externally protruding elastic element 2022 is a T-shaped rubber block.

[0056] The combination of springs and silicone can quickly dissipate impact vibration energy through the high damping properties of silicone, and provide stable rebound support by utilizing the linear restoring force of springs, thus maintaining the long-term stability of the buffer structure.

[0057] In some other embodiments, the internal elastic element 2021 may also be a single silicone block 2021a or a single buffer spring 2021b.

[0058] In this embodiment, the elastic components 202 are provided at both ends of the rigid body 201. The elastic components 202 are provided at both ends of the valve core 2, so that the solenoid valve can absorb impact energy during bidirectional movement (opening / closing), eliminating the rebound noise hazard that may be caused by unidirectional buffering.

[0059] The valve body 1 is provided with a coil 3. The coil 3 is arranged around the valve cavity 101 and is used to drive the rigid body 201 to slide away from the valve port when energized, so as to open the valve port.

[0060] Accordingly, a return spring 4 is fitted onto the end of the rigid body 201 away from the valve port; a limiting block 5 is provided at the end of the valve cavity 101 away from the valve port. The limiting block 5 abuts against the end of the return spring 4 away from the valve port, causing the return spring 4 to drive the valve core 2 to slide towards the valve port, thereby blocking the valve port.

[0061] Optionally, the limiting block 5 is threadedly sealed to the valve body 1. By turning the limiting block 5, the position of the limiting block 5 can be adjusted, thereby adjusting the preload of the return spring 4.

[0062] The silent solenoid valve provided in this embodiment operates in the following detailed manner:

[0063] S10: Initial state (valve port closed)

[0064] (1) Valve core 2 positioning

[0065] The valve core 2 (including the rigid body 201 and the elastic components 202 at both ends) is tightly attached to the valve port under the preload of the return spring 4.

[0066] The convex elastic element 2022 (rubber block) is deformed under pressure and forms a sealing contact with the valve port; the internal elastic element 2021 (silicone + spring) is in a pre-compressed state.

[0067] (2) Flow channel closed

[0068] The valve port is simultaneously sealed by the valve core 2, cutting off the fluid passage from the air inlet passage 102 to the air outlet passage 103.

[0069] S20: Power-on process

[0070] (1) Generation of electromagnetic force

[0071] When the coil 3 is energized, the axial magnetic field generated around the valve cavity 101 applies an electromagnetic force to the rigid body 201 of the valve core 2, in the opposite direction to the force of the return spring 4.

[0072] (2) Valve core 2 moves

[0073] The electromagnetic force overcomes the preload of the return spring 4 and drives the valve core 2 to slide away from the valve port.

[0074] First stage: The rigid body 201 drives the elastic component 202 (close to the valve port end) at one end to gradually move away from the cavity wall where the valve port is located, thereby gradually opening the valve port.

[0075] Second stage: The elastic component 202 (away from the valve port end) at the other end of the valve core 2 contacts the limiting block 5, the outwardly protruding elastic element 2022 undergoes compression deformation first, and the internal elastic element 2021 absorbs the remaining kinetic energy.

[0076] (3) Flow channel is open

[0077] When the valve core 2 is completely separated from the valve port, the air inlet 1021 and the air outlet 1031 form a continuous fluid channel through the valve cavity 101, and the fluid flows through the valve cavity 101.

[0078] S30: Power-off shutdown process

[0079] (1) Electromagnetic force disappears

[0080] When coil 3 is de-energized, the magnetic field disappears and the electromagnetic force returns to zero.

[0081] (2) Reset spring 4 drive

[0082] The return spring 4 releases the stored elastic potential energy, pushing the valve core 2 to accelerate towards the valve port.

[0083] (3) Buffer sealing stage

[0084] Before the impact: When the valve core 2 approaches the valve port, the outwardly protruding elastic element 2022 (rubber block) first contacts the edge of the valve port, and the impact time is extended by deformation, thereby reducing the peak impact force.

[0085] Post-collision stage: The internal elastic element 2021 (silicone + spring) is further compressed. The silicone damping dissipates the vibration energy, and the spring provides linear restoring force to prevent rebound.

[0086] (4) Completely sealed

[0087] The valve core 2 returns to its initial position, and the elastic component 202 maintains continuous compression to ensure an adaptive seal at the valve port.

[0088] In summary, the silent solenoid valve provided in this embodiment has the following advantages:

[0089] ① An elastic component 202 is provided on the end face of the valve core 2: the elastic material preferentially contacts the valve body 1, which transforms rigid collision into flexible buffer, effectively absorbs impact energy, and significantly reduces noise and vibration.

[0090] ② Layered elastic structure (outer convexity + inner elastic element 2021): The high hardness of the outer elastic element 2022 ensures the flatness of the sealing surface, while the low hardness of the inner elastic element 2021 provides the main buffer, forming a step-by-step energy absorption mechanism that balances sealing and noise reduction.

[0091] ③ Threaded connection limit stop 5: By adjusting the position of the stop, the preload of the reset spring 4 can be changed to adapt to different working conditions and improve the flexibility of valve control.

[0092] ④ The convex elastic element 2022 has a priority contact mechanism: During the collision, the convex elastic element 2022 deforms first to prolong the impact time and disperse the peak impact force, while the internal elastic element 2021 absorbs energy secondarily to suppress aftershocks.

[0093] ⑤ 202 Elastic Component Adaptive Sealing: Under pressure deformation, it continuously fits the valve port, compensating for manufacturing tolerances and wear, and improving sealing reliability and service life.

[0094] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application, and that utilize the content described in the text and drawings of this application to make equivalent structural or procedural substitutions or modifications, as well as any direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A silent solenoid valve, characterized in that, include: The valve body (1) is provided with a valve cavity (101) and a valve port communicating with the valve cavity (101); Valve core (2), which is slidably disposed in the valve cavity (101) and is positioned directly opposite the valve port; The valve core (2) includes a rigid body (201), and the rigid body (201) has an outwardly protruding elastic component (202) at least on the end face facing the valve port. The rigid body (201) has an open accommodating groove at its end face; The elastic component (202) includes an internal elastic element (2021) located within the receiving groove, and an externally protruding elastic element (2022) abutting against the internal elastic element (2021) and protruding outward through the opening of the receiving groove. The hardness of the convex elastic element (2022) is greater than that of the internal elastic element (2021).

2. The silent solenoid valve according to claim 1, characterized in that, The internal elastic element (2021) includes a silicone block (2021a) with a spring cavity and a buffer spring (2021b) located in the spring cavity.

3. The silent solenoid valve according to claim 2, characterized in that, The convex elastic element (2022) is a rubber block.

4. The silent solenoid valve according to claim 1, characterized in that, The elastic components (202) are provided at both ends of the rigid body (201).

5. The silent solenoid valve according to claim 1, characterized in that, The valve body (1) is equipped with a coil (3); The coil (3) is arranged around the valve cavity (101) and is used to drive the rigid body (201) to slide away from the valve port after being energized, so as to open the valve port.

6. The silent solenoid valve according to claim 5, characterized in that, A return spring (4) is fitted at the end of the rigid body (201) away from the valve port. The return spring (4) is used to drive the valve core (2) to slide toward the valve port to block the valve port.

7. The silent solenoid valve according to claim 6, characterized in that, The valve chamber (101) is provided with a limiting block (5) at one end away from the valve port, and the limiting block (5) abuts against the end of the reset spring (4) away from the valve port.

8. The silent solenoid valve according to claim 7, characterized in that, The limiting block (5) is threadedly sealed to the valve body (1).

9. The silent solenoid valve according to claim 1, characterized in that, The valve body (1) is also provided with an air inlet channel (102) connected to the air inlet (1021) of the valve cavity (101) and an air outlet channel (103) connected to the air outlet (1031) of the valve cavity (101). The valve port includes the air inlet (1021) and / or the air outlet (1031).

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