Flow control valve without shield ring

Abstract

The present application relates to the technical field of flow control valve, and belongs to a flow control valve without magnetic isolation ring, which comprises a valve body assembly, a fluid passage and a control assembly for controlling the opening and closing of the fluid passage are arranged in the valve body assembly, the fluid passage is arranged in a rotary manner, the control assembly is located at the rotary part of the fluid passage, the control assembly comprises a stop iron, the stop iron is connected to the valve body assembly, a groove structure is arranged on the outside of the stop iron, and a fourth blind hole and a fifth blind hole arranged in a stepped manner are arranged on the inside of the stop iron. Based on the unique electromagnetic structure of the stop iron, the magnetic circuit breaker structure is integrated, and the magnetic circuit structure is optimized. The magnetic field strength at the air gap of the electromagnetic valve is improved to obtain greater electromagnetic force; the lightweight structure design of the electromagnetic valve can obtain faster response speed under the driving of greater electromagnetic force.

Description

Technical Field

[0001] This invention relates to the field of flow control valve technology, specifically a flow control valve without a magnetic isolation ring. Background Technology

[0002] The solenoid valve in the battery cooling system is a crucial component of the thermal management system for new energy vehicles. It precisely controls the flow of coolant and can be coupled with the motor, electronic control system, and air conditioning system to form a multi-loop integrated thermal management system. The solenoid valve described in this patent boasts a response time and service life far exceeding those of commonly available solenoid valves on the market.

[0003] Most existing domestic and foreign solenoid valve products of the same type use platform or basin-type solenoid structures. Because these solenoid structures use the structure mode of magnetic circuit breakers, the external mating parts of the moving iron (moving parts) are usually processed into independent parts similar to bearings, and air is used in the middle to act as a magnetic circuit breaker, so that the magnetic field can pass through the moving iron (moving parts) to the maximum extent and obtain a larger electromagnetic force.

[0004] However, this design places high demands on product assembly and is prone to solenoid valve jamming. During the movement of the solenoid valve's moving iron, it is subjected to lateral attraction from the stationary iron. If the coaxiality of the external mating parts of the moving iron is poor, it can easily wobble and jam, causing the product to malfunction. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a flow control valve without a magnetic isolation ring.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a flow control valve without a magnetic isolation ring, comprising a valve body assembly, wherein the valve body assembly has a fluid channel and a control component for controlling the opening and closing of the fluid channel, the fluid channel is arranged in a rotary manner, the control component is located in the rotary part of the fluid channel, the control component includes a stop iron, the stop iron is connected inside the valve body assembly, the stop iron has a groove structure on its outside, and a fourth blind hole and a fifth blind hole arranged in a stepped manner inside the stop iron.

[0007] Preferably, the valve body assembly includes a valve body and a valve seat connected to the valve body, a yoke is sleeved and connected to the end of the valve body away from the valve seat, and a connecting plate is sleeved at the connection between the valve body and the yoke.

[0008] Preferably, the fluid channel consists of a first through hole and a first blind hole, wherein the first through hole is opened through the valve seat and the first blind hole is opened through the valve body.

[0009] Preferably, the tail of the yoke is provided with a seventh blind hole, and a pole shoe is provided in the seventh blind hole.

[0010] Preferably, the valve seat has a tapered sealing surface at the end near the yoke.

[0011] Preferably, the groove structure is provided with a coil assembly, the fourth blind hole is movably connected with an armature, the armature is provided with a third blind hole, and the third blind hole and the fifth blind hole are provided with springs.

[0012] Preferably, the end of the armature away from the stop is provided with a composite rubber pad.

[0013] Preferably, a sealing gasket is provided between the stop and the valve body.

[0014] Preferably, the bottom surface of the fourth blind hole is provided with a gasket.

[0015] Preferably, a thin film is installed between the outer wall of the armature and the fourth blind hole.

[0016] Preferably, both the valve seat and the outer wall of the valve body are provided with sealing grooves, and a sealing ring is provided in the sealing groove.

[0017] Compared with the prior art, the present invention provides a flow control valve without a magnetic isolation ring, which has the following advantages: This invention integrates the magnetic circuit breaker structure with the unique electromagnetic structure of the stop iron, optimizing the magnetic circuit structure. It increases the magnetic field strength at the air gap of the solenoid valve to obtain a greater electromagnetic force; the lightweight structural design of the solenoid valve, driven by the greater electromagnetic force, allows for a faster response speed.

[0018] Compared to the split or integrated magnetic shielding ring welding (press-fitting) design of other solenoid valve products, the retaining iron structure of this invention can be obtained through one-time integrated processing, thus having better coaxiality and roundness, which can greatly reduce the fitting accuracy between moving parts and obtain a longer service life.

[0019] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of a flow control valve without a magnetic isolation ring according to the present invention; Figure 2 , Figure 3 This is a schematic diagram of the valve body assembly of the present invention; Figure 4 A schematic diagram of the control component of this invention. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0022] See Figures 1-4 A flow control valve without a magnetic isolation ring includes a valve body assembly. The valve body assembly has a fluid channel and a control component for controlling the opening and closing of the fluid channel. The fluid channel is arranged in a rotary manner. The control component is located in the rotary part of the fluid channel. The control component includes a stop 9 connected inside the valve body assembly. The stop 9 has a groove structure on its exterior and a fourth blind hole 24 and a fifth blind hole 25 arranged in a stepped manner inside the stop 9.

[0023] Preferably, the valve body assembly includes a valve body 3 and a valve seat 1 connected within the valve body 3. A yoke 8 is sleeved and connected to the end of the valve body 3 away from the valve seat 1. A connecting plate 4 is sleeved at the connection between the valve body 3 and the yoke 8. The connecting plate 4 has a sixth blind hole 22 and a third through hole 21. The yoke 8 is assembled into the third through hole 21 by interference fit. This ensures efficient transmission of magnetic lines of force, improves the response efficiency and working stability of the electromagnetic component, and helps to distribute the working load and extend the service life of the component. The valve body 3 is interference-fitted into the sixth blind hole 22, which ensures the sealing between it and the connecting plate 4, prevents leakage of the working medium, maintains precise connection of the passage, maintains long-term reliable operation of the system, and reduces assembly complexity, improving the compactness and reliability of the structure.

[0024] Preferably, the fluid channel consists of a first through hole 16 and a first blind hole 17. The first through hole 16 is formed through the valve seat 1, and the first blind hole 17 is formed through the valve body 3. The first through hole 16 serves as an inlet, and the first blind hole 17 serves as an outlet.

[0025] Preferably, the tail of the yoke 8 is provided with a seventh blind hole 28, and the seventh blind hole 28 is provided with a pole shoe 11. Specifically, the pole shoe 11 and the seventh blind hole 28 are assembled with a clearance fit, and then the pole shoe 11 is fixed by wrapping the edge.

[0026] Preferably, the valve seat 1 has a tapered sealing surface 20 at the end near the yoke 8.

[0027] Preferably, the groove structure is provided with a coil assembly 10, the fourth blind hole 24 is movably connected with an armature 6, the armature 6 is provided with a third blind hole 23, and the third blind hole 23 and the fifth blind hole 25 are provided with springs 7.

[0028] Preferably, the armature 6 is provided at the end away from the stop 9, and the composite rubber pad 14 and the conical sealing surface 20 of the valve seat 1 form a seal under the action of the spring 7, which isolates the fluid passage and completes the valve closure.

[0029] Preferably, a sealing gasket 5 is provided between the stop 9 and the valve body 3 to prevent coolant from leaking from inside the solenoid valve.

[0030] Preferably, the bottom surface of the fourth blind hole 24 is provided with a gasket 12, which serves to reduce noise, extend product life, ensure working air gap, and prevent residual magnetism from sticking together.

[0031] Preferably, a thin film 13 is installed between the outer wall of the armature 6 and the fourth blind hole 24. The thin film 13 can reduce the friction between moving parts and extend the service life of the solenoid valve.

[0032] Preferably, both the valve seat 1 and the valve body 3 have sealing grooves on their outer walls, and a sealing ring 15 is provided in the sealing groove. The sealing ring 15 is used to form a seal with the external environment to prevent coolant leakage.

[0033] Furthermore, the stop iron 9, armature 6, yoke 8, and pole shoe 11 are all made of magnetically conductive metal materials, and the surfaces of the stop iron 9, armature 6, yoke 8, and pole shoe 11 are all coated with a wear-resistant and corrosion-resistant coating. Furthermore, the valve body 3, valve seat 1, spring 7, connecting plate 4, gasket 12, and sealing gasket 5 are all made of non-magnetic materials.

[0034] Working principle of the invention: When in operation: yoke 8, stop iron 9, pole shoe 11, and armature 6 form a closed magnetic circuit.

[0035] When the coil assembly 10 is energized, the armature 6 will move towards the stop 9 under the action of electromagnetic force. At this time, the armature 6 overcomes the elastic force of the spring 7 and drives the composite rubber pad 14 to disengage from the valve seat 1. The first through hole 16 is connected to the first blind hole 17 to realize the liquid inlet or liquid outlet function.

[0036] When the coil assembly 10 is de-energized, the armature 6 will be pushed towards the valve seat 1 by the elastic force of the spring 7. At this time, the composite rubber pad 14 will re-contact with the valve seat 1 to form a seal. The first through hole 16 and the first blind hole 17 will achieve the pressure holding function.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flow control valve without a magnetic isolation ring, characterized in that: The valve body assembly includes a fluid channel and a control component for controlling the opening and closing of the fluid channel. The fluid channel is arranged in a rotary manner. The control component is located in the rotary part of the fluid channel. The control component includes a stop (9). The stop (9) is connected inside the valve body assembly. The stop (9) has a groove structure on its outside and a fourth blind hole (24) and a fifth blind hole (25) arranged in a stepped manner inside the stop (9).

2. The flow control valve without magnetic isolation ring according to claim 1, characterized in that: The valve body assembly includes a valve body (3) and a valve seat (1) connected inside the valve body (3). A yoke (8) is sleeved and connected to the end of the valve body (3) away from the valve seat (1). A connecting plate (4) is sleeved at the connection between the valve body (3) and the yoke (8).

3. The flow control valve without magnetic isolation ring according to claim 2, characterized in that: The fluid channel consists of a first through hole (16) and a first blind hole (17). The first through hole (16) is opened through the valve seat (1), and the first blind hole (17) is opened through the valve body (3).

4. A flow control valve without a magnetic isolation ring according to claim 2, characterized in that: The tail of the yoke (8) is provided with a seventh blind hole (28), and the seventh blind hole (28) is provided with a pole shoe (11).

5. A flow control valve without a magnetic isolation ring according to claim 2, characterized in that: The valve seat (1) has a tapered sealing surface (20) at one end near the yoke (8).

6. The flow control valve without magnetic isolation ring according to claim 1, characterized in that: The groove structure is provided with a coil assembly (10), and an armature (6) is movably connected in the fourth blind hole (24). A third blind hole (23) is provided in the armature (6), and a spring (7) is provided in the third blind hole (23) and the fifth blind hole (25).

7. A flow control valve without a magnetic isolation ring according to claim 6, characterized in that: The armature (6) is provided with a composite rubber pad (14) at the end away from the stop (9).

8. A flow control valve without a magnetic isolation ring according to claim 6, characterized in that: A sealing gasket (5) is provided between the stop (9) and the valve body (3).

9. A flow control valve without a magnetic isolation ring according to claim 6, characterized in that: The bottom surface of the fourth blind hole (24) is provided with a gasket (12).

10. A flow control valve without a magnetic isolation ring according to claim 6, characterized in that: A thin film (13) is installed between the outer wall of the armature (6) and the fourth blind hole (24).

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