Electromagnetic valve
View Patent ↗An electromagnetic valve, including a valve body, a valve sleeve, a valve element, a static iron core, a movable iron core and a first valve port portion, and further including a limiting member, a first spring and a second spring. One end of the first spring abuts against the limiting member, and the other end of the first spring abuts against the static iron core. One end of the second spring abuts against the movable iron core, and the other end of the second spring abuts against the valve element. The limiting member includes a first limiting portion, and the movable iron core includes a second limiting portion. The valve element includes a third limiting portion, and the movable iron core includes a fourth limiting portion.
1. An electromagnetic valve, comprising a valve body, a valve sleeve, a valve core, a static iron core, a movable iron core and a first valve port portion, wherein the static iron core is fixedly connected with the valve sleeve, and the movable iron core is at least partially located in an inner cavity of the valve sleeve; the valve body comprises a flow path inlet end and a flow path outlet end, and the valve core is configured to abut against the first valve port portion; wherein the electromagnetic valve further comprises a limiting member, a first spring and a second spring,
the limiting member is at least partially located in an inner cavity of the movable iron core, and the limiting member is configured to abut against the valve core; one end of the first spring is abutted against the limiting member, and another end of the first spring is abutted against the static iron core; one end of the second spring is abutted against the movable iron core, and another end of the second spring is abutted against the valve core;
the limiting member comprises a first limiting portion, the movable iron core comprises a second limiting portion configured to abut against the first limiting portion, and the movable iron core is configured to drive the limiting member to move toward the static iron core;
the valve core comprises a third limiting portion, the movable iron core comprises a fourth limiting portion configured to abut against the third limiting portion, and the movable iron core is configured to drive the valve core to move toward the static iron core.
2. The electromagnetic valve according to claim 1 , wherein the limiting member is cylindrical and comprises a first outer flange portion, the first outer flange portion serves as the first limiting portion, the movable iron core comprises a first inner flange portion, the first inner flange portion serves as the second limiting portion, and the first spring is abutted against the first outer flange portion.
3. The electromagnetic valve according to claim 2 , wherein when the electromagnetic valve is closed, an axial minimum distance between the movable iron core and the static iron core is defined as H1, an axial minimum distance between the third limiting portion and the fourth limiting portion is defined as H2, and an axial minimum distance between the first limiting portion and the second limiting portion is defined as H3, and, H1, H2 and H3 satisfy the following: H1 is greater than H2, and H2 is greater than or equal to H3.
4. The electromagnetic valve according to claim 2 , wherein the valve body further comprises a second valve port portion,
the electromagnetic valve comprises a piston component; the piston component comprises a sealing portion, a first flow passage and the first valve port portion; the piston component is disposed in a valve cavity of the electromagnetic valve, the sealing portion is configured to abut against the second valve port portion, and the first flow passage is configured to communicate a valve port of the first valve port portion with a valve port of the second valve port portion.
5. The electromagnetic valve according to claim 1 , wherein the valve core comprises a second outer flange portion, the second outer flange portion serves as the third limiting portion, the movable iron core comprises a second inner flange portion, the second inner flange portion serves as the fourth limiting portion, and the second spring is abutted against the second outer flange portion.
6. The electromagnetic valve according to claim 5 , wherein the movable iron core comprises a core body and a nested member, the core body is fixedly connected with the nested member, the nested member is cylindrical, the nested member comprises a lower flange portion, and the second spring is abutted against the lower flange portion.
7. The electromagnetic valve according to claim 6 , wherein when the electromagnetic valve is closed, an axial minimum distance between the movable iron core and the static iron core is defined as H1, an axial minimum distance between the third limiting portion and the fourth limiting portion is defined as H2, and an axial minimum distance between the first limiting portion and the second limiting portion is defined as H3, and, H1, H2 and H3 satisfy the following: H1 is greater than H2, and H2 is greater than or equal to H3.
8. The electromagnetic valve according to claim 6 , wherein the valve body further comprises a second valve port portion,
the electromagnetic valve comprises a piston component; the piston component comprises a sealing portion, a first flow passage and the first valve port portion; the piston component is disposed in a valve cavity of the electromagnetic valve, the sealing portion is configured to abut against the second valve port portion, and the first flow passage is configured to communicate a valve port of the first valve port portion with a valve port of the second valve port portion.
9. The electromagnetic valve according to claim 5 , wherein when the electromagnetic valve is closed, an axial minimum distance between the movable iron core and the static iron core is defined as H1, an axial minimum distance between the third limiting portion and the fourth limiting portion is defined as H2, and an axial minimum distance between the first limiting portion and the second limiting portion is defined as H3, and, H1, H2 and H3 satisfy the following: H1 is greater than H2, and H2 is greater than or equal to H3.
10. The electromagnetic valve according to claim 5 , wherein the valve body further comprises a second valve port portion,
the electromagnetic valve comprises a piston component; the piston component comprises a sealing portion, a first flow passage and the first valve port portion; the piston component is disposed in a valve cavity of the electromagnetic valve, the sealing portion is configured to abut against the second valve port portion, and the first flow passage is configured to communicate a valve port of the first valve port portion with a valve port of the second valve port portion.
11. The electromagnetic valve according to claim 1 , wherein when the electromagnetic valve is closed, an axial minimum distance between the movable iron core and the static iron core is defined as H1, an axial minimum distance between the third limiting portion and the fourth limiting portion is defined as H2, and an axial minimum distance between the first limiting portion and the second limiting portion is defined as H3, and, H1, H2 and H3 satisfy the following: H1 is greater than H2, and H2 is greater than or equal to H3.
12. The electromagnetic valve according to claim 11 , wherein a stiffness of the first spring is greater than a stiffness of the second spring, and when the electromagnetic valve is opened, the limiting member is abutted against the valve core, and the valve core is not abutted against the first valve port portion; and when the electromagnetic valve is closed, the limiting member is abutted against the valve core, and the valve core is abutted against the first valve port portion.
13. The electromagnetic valve according to claim 1 , wherein the valve body further comprises a second valve port portion,
the electromagnetic valve comprises a piston component; the piston component comprises a sealing portion, a first flow passage and the first valve port portion; the piston component is disposed in a valve cavity of the electromagnetic valve, the sealing portion is configured to abut against the second valve port portion, and the first flow passage is configured to communicate a valve port of the first valve port portion with a valve port of the second valve port portion.
14. The electromagnetic valve according to claim 13 , wherein the piston component comprises a piston body and a piston core, and the piston body is configured to drive the piston core to move toward the movable iron core; the valve body further comprises an upper limiting portion and a lower limiting portion, wherein the upper limiting portion is configured to limit a stroke of the piston body moving toward the movable iron core, and the lower limiting portion is configured to limit a stroke of the piston body moving toward the second valve port portion.
15. The electromagnetic valve according to claim 14 , wherein the valve body comprises a body and a mounting seal cap, the mounting seal cap is fixedly connected to the body, the valve sleeve is fixedly connected to the mounting seal cap, and the mounting seal cap comprises the upper limiting portion.
16. The electromagnetic valve according to claim 15 , wherein the mounting seal cap is cylindrical, an upper end portion of the mounting seal cap comprises an outer protruding portion, a lower end portion of the mounting seal cap comprises an inner protruding portion, the inner protruding portion serves as the upper limiting portion, an end surface of the outer protruding portion is abutted against an upper end surface of the body to form a welding surface, and a lower end of the valve sleeve is abutted against the inner protruding portion.