A solenoid valve 10 including a valve sleeve 41, and a solenoid portion 20 which is mounted at one end along axial direction of the valve sleeve 41. A plurality of ports 51 to 54 are formed on the valve sleeve 41. In at least an outlet port 51 of the plurality of ports, a relation of S1≧S0 is fulfil
A solenoid valve 10 including a valve sleeve 41, and a solenoid portion 20 which is mounted at one end along axial direction of the valve sleeve 41. A plurality of ports 51 to 54 are formed on the valve sleeve 41. In at least an outlet port 51 of the plurality of ports, a relation of S1≧S0 is fulfilled, where S1 is an opening area of valve portion when the spool 60 moves in an axial direction to maximally open the valve portion between the outlet port 51 and the internal flow passage 47, and S0 is the total flow passage cross-sectional area.
대표청구항▼
1. A solenoid valve comprising a valve sleeve, inside of which a spool is movably arranged in an axial direction, and a solenoid portion mounted on an axial end of said valve sleeve to give a force for moving said spool in an axial direction, wherein: a plurality of ports are formed on said valve sl
1. A solenoid valve comprising a valve sleeve, inside of which a spool is movably arranged in an axial direction, and a solenoid portion mounted on an axial end of said valve sleeve to give a force for moving said spool in an axial direction, wherein: a plurality of ports are formed on said valve sleeve to properly communicate to an internal flow passage internally formed in the valve sleeve; andthe plurality of said ports includes at least an outlet port, a control port and a feedback port and said control port and said feedback port are communicating with each other outside of said solenoid valve,an anterior end of said spool contacts a spring along an axial direction, and a posterior end of said spool contacts a rod along the axial direction, said spool receives a first pressure of said spring, a second pressure due to movement of a plunger which presses said spool via said rod due to an electromagnetic force of an magnetic field generated by electricity applied to the coil, and a third pressure based on a pressure generated by a control fluid from said feedback port,said spool moves in an axial direction so that the first pressure, the second pressure, and the third pressure come into balance with one another,a relation of S1≧S0 is fulfilled in at least an outlet port of the plurality of ports, where S1 is defined as an opening area of a valve portion between said outlet port and said internal flow passage when said spool moves in an axial direction to maximally open the valve portion, and S0 is defined as a total flow passage cross-sectional area of said outlet port;a ring-shaped groove extending in a circumferential direction is formed on an inner circumference surface of a valve seat of said valve sleeve, where said outlet port is formed,by moving said spool in an axial direction and blocking said ring-shaped groove with a first large-diameter portion formed on said spool, said valve portion is closed to block communication of said outlet port and said internal flow passage, andsaid opening area S1 can be expressed by π×D1×Wmax, wherein said D1 is an outer diameter of said first large-diameter portion and said Wmax is the maximum value of the distance W between a posterior end of said first large-diameter portion and a posterior end side face of said ring-shaped groove. 2. The solenoid valve as set forth in claim 1, wherein: one or more of said outlet port is formed, and a cross-section of each outlet port is circular. 3. The solenoid valve as set forth in claim 1, wherein: a relation of S1′≧S0′ is fulfilled in at least an input port of the plurality of ports, where S1′ is defined as an opening area of a valve portion between said input port and said internal flow passage when said spool moves in an axial direction to maximally open the valve portion, and S0′ is defined as a total flow passage cross-sectional area of said input port. 4. The solenoid valve as set forth claim 2, wherein a relation of S1′≧S0′ is fulfilled in at least an input port of the plurality of ports, where S1′ is defined as an opening area of a valve portion between said input port and said internal flow passage when said spool moves in axial direction to maximally open the valve portion, and S0′ is defined as a total flow passage cross-sectional area of said input port. 5. The solenoid valve as set forth in claim 1, wherein the spool includes a second large-diameter portion having an outer diameter substantially equal to the outer diameter of the first large-diameter portion, and a third large-diameter portion having an outer diameter less than the outer diameters of both the first and second large-diameter portions, and wherein the second large-diameter portion is disposed between the first large-diameter portion and the third large-diameter portion. 6. The solenoid valve as set forth in claim 5, wherein the second large-diameter portion is configured to open and close a space between an input port of the plurality of ports and the internal flow passage, and the third large-diameter portion is configured to open and close a space between the feedback port and the internal flow passage.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (8)
Tominaga Tsutomu (Himeji JPX), Flow control solenoid valve apparatus.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.