电磁阀、制冷设备及车辆

Abstract

本实用新型公开了一种电磁阀、制冷设备及车辆，涉及阀门技术领域，其中，电磁阀包括：阀座，具有阀腔及连通阀腔的阀口，阀座上设有第一吸合面；阀套，固定于阀座上；活塞，活动设于阀腔内，用以打开或封闭阀口；芯铁，活动设于阀套内，芯铁上设有第二吸合面，第二吸合面与第一吸合面相对设置以相互吸合；减磁结构，设于第二吸合面与第一吸合面之间，减磁结构用以减小第二吸合面与第一吸合面的重叠区域。本实用新型提供的技术方案降低了剩磁力对于阀门开关的影响。

Claims

1. An electromagnetic valve characterized by comprising: include: A valve seat having a valve cavity and a valve port communicating with the valve cavity, and a first suction surface being provided on the valve seat; Valve sleeve, fixed to the valve seat; A piston is movably disposed within the valve chamber to open or close the valve port; The core iron is movably disposed inside the valve sleeve. The core iron is provided with a second suction surface, which is arranged opposite to the first suction surface to attract each other. A demagnetizing structure is disposed between the second attraction surface and the first attraction surface, the demagnetizing structure being used to reduce the overlap area between the second attraction surface and the first attraction surface.

2. The electromagnetic valve according to claim 1, wherein The demagnetizing structure is configured as a demagnetizing groove, which is disposed on at least one of the second attraction surface and the first attraction surface.

3. The electromagnetic valve according to claim 2, wherein The demagnetizing groove includes a first demagnetizing groove disposed on the edge of the second attraction surface, and the first demagnetizing groove extends circumferentially around the core iron.

4. The electromagnetic valve according to claim 3, wherein The depth of the first demagnetizing groove is a, where 0.05mm≤a≤0.3mm.

5. The electromagnetic valve according to claim 2, wherein The solenoid valve also includes a valve needle disposed on the core iron, and the piston is also provided with a flow guide port. The first contact surface is provided with a first through hole communicating with the valve cavity. The valve needle passes through the first through hole to block the flow guide port. The demagnetizing structure also includes a second demagnetizing groove. The second demagnetizing groove is disposed on the second contact surface. The second demagnetizing groove is coaxial with the first through hole, and the outer diameter of the second demagnetizing groove is not less than the diameter of the first through hole.

6. The electromagnetic valve according to claim 5, wherein The depth of the second demagnetizing groove is b, where 0.05mm≤b≤0.3mm.

7. The electromagnetic valve according to claim 5, wherein The core iron has a cavity, and the solenoid valve further includes a first elastic element, which is housed within the cavity. The core iron and the valve needle are connected through the first elastic element.

8. The electromagnetic valve according to claim 7, wherein The cavity has an opening at the top and a flange around the periphery of the opening. The first elastic member is inserted into the cavity through the opening, and the flange is used for bending to confine the first elastic member within the cavity.

9. The electromagnetic valve according to claim 8, wherein During the flanging and bending process, the second demagnetizing groove is used to cooperate with the processing equipment to support the core iron and suspend the second suction surface.

10. The electromagnetic valve according to claim 7, wherein The second demagnetizing groove is connected to the cavity, and the valve needle passes through the cavity and the second demagnetizing groove in sequence.

11. The electromagnetic valve according to claim 2, wherein The demagnetizing groove also includes a third demagnetizing groove, which is disposed on the first attraction surface.

12. The solenoid valve according to claim 11, wherein The third demagnetizing groove extends circumferentially along the first contact surface to divide the first contact surface into two parts. The solenoid valve also includes a magnetic shielding pad, which is disposed in the third demagnetizing groove, and the projection of the third demagnetizing groove along the axial direction of the core iron is located in the second contact surface.

13. The solenoid valve according to claim 1, wherein The demagnetizing structure includes: The first demagnetizing groove is provided at the edge of the second attraction surface and extends around the circumference of the second attraction surface. The second demagnetizing groove is located in the middle of the second attraction surface; The third demagnetizing groove is disposed on the first contact surface and extends around the first contact surface in the circumferential direction; The first demagnetizing groove, the second demagnetizing groove, and the third demagnetizing groove are offset from each other radially in the valve seat.

14. A refrigeration appliance characterized in that, The solenoid valve includes any one of claims 1 to 13.

15. A vehicle characterized by comprising: Includes the refrigeration equipment as described in claim 14.

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