Carbon tank electromagnetic valve with resonant cavity

Abstract

The utility model discloses a carbon tank solenoid valve with a resonant cavity, which comprises a valve body and a valve cover arranged on the valve body, a valve mechanism is arranged in the valve body, an air inlet pipe is arranged on the valve body, an air outlet pipe is arranged on the valve cover, a lower partition plate is arranged in the valve body, an upper partition plate is arranged on the valve cover, and the resonant cavity is arranged on the valve cover. The upper partition plate and the lower partition plate divide the valve body into an air inlet cavity and an air outlet cavity, an arc-shaped noise reduction partition plate is arranged in the air inlet cavity, a resonant cavity is formed between the noise reduction partition plate and the valve body, the air inlet pipe is communicated with the resonant cavity, a supporting frame is arranged in the resonant cavity, a first baffle is arranged on the supporting frame, and a second baffle is arranged on the first baffle. A first baffle is arranged above the valve body, a first air inlet groove is formed between the first baffle and the valve body, a second baffle is arranged above the first baffle, and a second air inlet groove is formed between the second baffle and the noise reduction partition plate. By optimizing an airflow path, the noise of airflow is reduced, equipment is quieter in the operation process, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valves, in particular to a carbon canister electromagnetic valve with a resonant cavity. Background Art

[0002] The carbon canister solenoid valve is a device installed on cars or motorcycles to reduce air pollution caused by fuel evaporation emissions and increase fuel efficiency. The activated carbon canister of a car is usually designed as a long box connected between the fuel tank and the engine intake manifold. The carbon canister solenoid valves of different models look different, but their functions are the same. The box has an air inlet and an exhaust port, usually designed on the same side. The interior of the carbon canister is designed to be divided into two or three cavities to increase the path for oil and gas to pass through in order to achieve better adsorption and desorption efficiency. The cavity is filled with granular activated carbon made through a special process that is particularly suitable for adsorbing oil and gas molecules. The air inlet of the carbon canister is connected to the pipeline from the fuel tank, and the exhaust port is connected to the engine intake manifold through a solenoid valve.

[0003] The existing carbon canister solenoid valve is prone to generating eddy currents and aerodynamic noise when the airflow passes through the solenoid valve, especially under high flow and high pressure difference conditions. This will cause the equipment to generate loud noise during operation, affecting the user experience, especially in automobiles or household appliances. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a carbon canister solenoid valve with a resonant cavity, which reduces the noise of the airflow by optimizing the airflow path, makes the equipment quieter during operation, and improves the user experience.

[0005] In order to solve the above technical problems, the utility model provides a carbon canister solenoid valve with a resonant cavity, comprising a valve body and a valve cover arranged on the valve body, wherein a valve mechanism is arranged in the valve body, an air inlet pipe is arranged on the valve body, an air outlet pipe is arranged on the valve cover, a lower partition is arranged in the valve body, an upper partition is arranged on the valve cover, the upper partition abuts against the lower partition, the upper and lower partitions separate the valve body into an air inlet cavity and an air outlet cavity, the air outlet pipe extends downward into the air outlet cavity and is communicated with the air outlet cavity, the valve mechanism is arranged in the air outlet cavity, the lower partition The two sides are connected to the valve body, and connecting grooves are provided on both sides of the upper partition. An arc-shaped noise reduction partition is provided in the air intake cavity, and a resonance cavity is formed between the noise reduction partition and the valve body. The air intake pipe is connected to the resonance cavity, and a support frame is provided in the resonance cavity. A first baffle is provided on the support frame, and a first air intake groove is formed between the first baffle and the valve body. A second baffle is provided above the first baffle, and a second air intake groove is formed between the second baffle and the noise reduction partition. The gas in the resonance cavity moves along the curve through the first air intake groove and the second air intake groove in turn.

[0006] A filter assembly is also provided in the resonant cavity, and the support frame is arranged above the filter assembly.

[0007] The filter assembly includes a filter bracket, a filter plate is provided on the filter bracket, and the filter plate is a porous filter screen.

[0008] The valve mechanism includes a skeleton, a static iron core is provided on the skeleton, a valve core assembly is provided above the static iron core, a moving iron core is provided in the valve core assembly, a through hole is provided on the static iron core, a limiting column is provided in the through hole, a convex ring is provided on the limiting column, the convex ring abuts against the static iron core, a moving valve core is provided on the moving iron core, and the moving valve core abuts against the outlet pipe.

[0009] The moving iron core includes a magnetic disc, the moving valve core is arranged on the magnetic disc, the edge of the magnetic disc is provided with a side wall extending downward, the side wall is arranged around the limit column, and a return spring is provided between the side wall and the limit column, the upper end of the return spring abuts on the magnetic disc, and the lower end abuts on the convex ring.

[0010] An upper support plate and a lower support plate are further provided in the valve body, a magnetic conductive sleeve is provided between the upper support plate and the lower support plate, and the frame is provided in the magnetic conductive sleeve.

[0011] The lower end of the valve body is also provided with an electrical connection port, and an insert is provided in the electrical connection port, and the insert is connected to the lower end of the frame.

[0012] A sealing member is further provided at the lower end of the frame. The sealing member is made of insulating material. The insert passes through the sealing member and is connected to the frame.

[0013] A limit plate is provided in the valve cover, and the upper support plate abuts against the limit plate.

[0014] When the utility model is in use, gas enters the resonant cavity through the air inlet pipe. The filter assembly removes impurities to ensure gas cleanliness. The gas then passes through the first and second air inlet slots in sequence, moving along a curved path to reduce noise. After entering the air inlet chamber, the gas enters the air outlet chamber through the connecting slot. When the power is turned on, current flows into the frame through the power port and the plug, stimulating the static iron core to generate a magnetic field, causing the moving iron core to be attracted to the static iron core. The movement of the moving iron core guides the moving valve core to open, allowing air to be discharged through the air outlet pipe. When the power is turned off, the return spring returns the moving iron core and the moving valve core to their initial positions, ensuring the valve is closed and preventing gas leakage.

[0015] The beneficial effects brought by the utility model are:

[0016] The utility model reduces the noise of the airflow by optimizing the airflow path, making the device quieter during operation and improving the user experience.

[0017] The utility model can effectively remove impurities and particles in the air flow and extend the service life of the solenoid valve.

[0018] The valve mechanism can quickly and accurately adjust the airflow to adapt to different working conditions, improving the reliability and safety of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the present utility model.

[0020] Figure 2 It is a cross-sectional view of the present utility model.

[0021] Figure 3 It is a bottom view of the valve cover of the utility model.

[0022] Figure 4 It is a structural diagram of the support frame of the utility model.

[0023] Figure 5 It is a structural diagram of the filter assembly of the utility model.

[0024] Figure 6 It is a cross-sectional view of the valve mechanism of the present utility model.

[0025] In the figure: 1. valve body; 2. valve cover; 3. valve mechanism; 4. air inlet pipe; 5. air outlet pipe; 6. lower partition; 7. upper partition; 8. air inlet cavity; 9. air outlet cavity; 10. connecting groove; 11. noise reduction partition; 12. resonant cavity; 13. support frame; 14. first baffle; 15. first air inlet groove; 16. second baffle; 17. second air inlet groove; 18. filter bracket; 19. filter plate; 20. skeleton; 21. static iron core; 22. valve core assembly; 23. moving iron core; 24. through hole; 25. limiting column; 26. convex ring; 27. moving valve core; 28. magnetic disc; 29. ​​side wall; 30. reset spring; 31. upper support plate; 32. lower support plate; 33. magnetic sleeve; 34. electrical interface; 35. plug; 36. seal; 37. limiting plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] according to Figures 1 to 4As shown, the present invention shows a carbon canister solenoid valve with a resonant cavity 12, comprising a valve body 1 and a valve cover 2 mounted on the valve body 1. The valve body 1 is provided with a valve mechanism 3 to control the flow of gas. An inlet pipe 4 is connected to the valve body 1, while the valve cover 2 is provided with an outlet pipe 5. The outlet pipe 5 extends downward into and communicates with an outlet cavity 9. A lower baffle 6 is provided within the valve body 1, while an upper baffle 7 is provided on the valve cover 2. The two baffles abut against each other, thereby dividing the interior of the valve body 1 into an inlet cavity 8 and an outlet cavity 9. Both sides of the lower baffle 6 are connected to the valve body 1, while both sides of the upper baffle 7 are provided with connecting grooves 10, connecting the inlet cavity 8 and the outlet cavity 9 via the connecting grooves 10. Furthermore, an arc-shaped noise-reducing baffle 11 is provided within the inlet cavity 8, forming a resonant cavity 12 between the valve body 1 and the valve body 1. The inlet pipe 4 is also connected to the resonant cavity 12. A support frame 13 is also provided inside the resonant cavity 12, and a first baffle 14 is provided on the support frame 13. A first air inlet groove 15 is formed between the first baffle 14 and the valve body 1. After the gas in the air inlet cavity 8 passes through this groove, it further flows upward to the second baffle 16. A second air inlet groove 17 is formed between the second baffle 16 and the noise reduction partition 11. The gas then passes through the second air inlet groove 17, passes through the connecting groove 10 along a curved path, and enters the air outlet cavity 9.

[0028] according to Figure 5 As shown, a filter assembly is provided in the resonant cavity 12, and the filter assembly includes a filter bracket 18. The support frame 13 is arranged above the filter bracket 18. A filter plate 19 is provided on the filter bracket 18. The filter plate 19 is a porous filter screen that can effectively capture particulate matter and impurities in the airflow to ensure the cleanliness of the gas passing through the valve body 1.

[0029] according to Figure 6 As shown, the valve mechanism 3 includes a skeleton 20, on which a static iron core 21 is installed, and above the static iron core 21 a valve core assembly 22 is provided, and the valve core assembly 22 includes a moving iron core 23, and a limiting column 25 is installed in the through hole 24 provided on the static iron core 21, and a convex ring 26 is provided on the limiting column 25, and the convex ring 26 abuts against the static iron core 21. At the same time, a moving valve core 27 is provided on the moving iron core 23, and the moving valve core 27 is in direct contact with the outlet pipe 5, and is responsible for opening or closing the airflow to ensure smooth air outlet. The moving iron core 23 includes a magnetic disc 28, and the edge of the magnetic disc 28 has a side wall 29 extending downward. The side wall 29 is arranged around the limit column 25. A return spring 30 is provided between the side wall 29 and the limit column 25. The upper end of the spring abuts on the magnetic disc 28, and the lower end abuts on the convex ring 26, ensuring that the moving iron core 23 can return to its original position when no force is applied, thereby achieving reliable valve closure.

[0030] An upper support plate 31 and a lower support plate 32 are further provided in the valve body 1, and a magnetic sleeve 33 is provided between the upper support plate 31 and the lower support plate 32. The setting of the magnetic sleeve 33 can effectively improve the magnetic properties of the solenoid valve, ensure good conduction of the electromagnetic field, and thereby enhance the response speed and control accuracy of the valve. At the same time, the skeleton 20 is cleverly placed in the magnetic sleeve 33, forming a compact and efficient structure. In addition, a limit plate 37 is provided inside the valve cover 2, and the contact between the upper support plate 31 and the limit plate 37 provides additional support, ensuring the stability of the entire valve body 1.

[0031] At the lower end of the valve body 1, an electrical port 34 is additionally provided, in which plugs 35 are installed. These plugs 35 are connected to the lower end of the skeleton 20 to ensure stable access to the power supply. The lower end of the skeleton 20 is also equipped with a seal 36. The seal 36 is made of insulating material to effectively prevent current leakage and ensure the safety of the system. The plugs 35 pass through the seal 36 and are connected to the skeleton 20 to form a closed and safe electrical connection.

[0032] When the present invention is in use, gas enters the resonant cavity 12 through the air inlet pipe 4, and the filter assembly removes impurities to ensure gas cleanliness. The gas then passes through the first air inlet slot 15 and the second air inlet slot 17 in sequence, moving along a curved path to reduce noise. After entering the air inlet chamber 8, the gas enters the air outlet chamber 9 through the connecting slot 10. When the power is turned on, current flows into the skeleton 20 through the power port 34 and the plug 35, stimulating the static iron core 21 to generate a magnetic field, causing the moving iron core 23 to be attracted by the static iron core 21. The movement of the moving iron core 23 guides the moving valve core 27 to open, thereby allowing the air flow to be discharged through the air outlet pipe 5. When the power is turned off, the return spring 30 returns the moving iron core 23 and the moving valve core 27 to their initial positions, ensuring that the valve is closed and preventing gas leakage.

[0033] The beneficial effects brought by the utility model are:

[0034] The utility model reduces the noise of the airflow by optimizing the airflow path, making the device quieter during operation and improving the user experience.

[0035] The utility model can effectively remove impurities and particles in the air flow and extend the service life of the solenoid valve.

[0036] The valve mechanism can quickly and accurately adjust the airflow to adapt to different working conditions, improving the reliability and safety of the system.

[0037] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.

Claims

1. A carbon canister solenoid valve with a resonant cavity, comprising a valve body and a valve cover disposed on the valve body, wherein the valve body is provided with a valve mechanism, the valve body is provided with an air inlet pipe, and the valve cover is provided with an air outlet pipe, characterized in that: The cam is provided with a plurality of connecting rods and a plurality of connecting rods, and the connecting rods are connected to the cam face and the cam face respectively. The cam face is provided with a plurality of connecting rods and a plurality of connecting rods are connected to the cam face.

2. The carbon canister solenoid valve with a resonant cavity according to claim 1, characterized in that: A filter assembly is also provided in the resonant cavity, and the support frame is arranged above the filter assembly.

3. The carbon canister solenoid valve with a resonant cavity according to claim 2, characterized in that: The filter assembly includes a filter bracket, a filter plate is provided on the filter bracket, and the filter plate is a porous filter screen.

4. The carbon canister solenoid valve with a resonant cavity according to claim 1, characterized in that: The valve mechanism includes a skeleton, a static iron core is provided on the skeleton, a valve core assembly is provided above the static iron core, a moving iron core is provided in the valve core assembly, a through hole is provided on the static iron core, a limiting column is provided in the through hole, a convex ring is provided on the limiting column, the convex ring abuts against the static iron core, a moving valve core is provided on the moving iron core, and the moving valve core abuts against the outlet pipe.

5. The carbon canister solenoid valve with a resonant cavity according to claim 4, characterized in that: The moving iron core includes a magnetic disc, the moving valve core is arranged on the magnetic disc, the edge of the magnetic disc is provided with a side wall extending downward, the side wall is arranged around the limit column, and a return spring is provided between the side wall and the limit column, the upper end of the return spring abuts on the magnetic disc, and the lower end abuts on the convex ring.

6. The carbon canister solenoid valve with a resonant cavity according to claim 4, characterized in that: An upper support plate and a lower support plate are further provided in the valve body, a magnetic conductive sleeve is provided between the upper support plate and the lower support plate, and the frame is provided in the magnetic conductive sleeve.

7. The carbon canister solenoid valve with a resonant cavity according to claim 4, characterized in that: The lower end of the valve body is also provided with an electrical connection port, and an insert is provided in the electrical connection port, and the insert is connected to the lower end of the frame.

8. The carbon canister solenoid valve with a resonant cavity according to claim 7, characterized in that: A sealing member is further provided at the lower end of the frame. The sealing member is made of insulating material. The insert passes through the sealing member and is connected to the frame.

9. The carbon canister solenoid valve with a resonant cavity according to claim 6, characterized in that: A limit plate is provided in the valve cover, and the upper support plate abuts against the limit plate.

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