JP2006070706A5

JP2006070706A5 -

Info

Publication number: JP2006070706A5
Application number: JP2004251288A
Authority: JP
Filing date: 2004-08-31
Publication date: 2007-01-11
Anticipated expiration: 2024-08-31

Claims

A drive valve having a valve stem;
A swing member having an arm portion formed of a magnetic material and extending from one end connected to the valve shaft toward the other end swingably supported by the support member;
A core provided facing the arm portion; and a coil pivoted on the core; and when a current is passed through the coil to apply an electromagnetic force to the swing member, the core and the arm An electromagnet forming a magnetic circuit passing through the section;
A permanent magnet having a magnetic axis along the magnetic circuit and provided to act on a magnetic flux flowing through the magnetic circuit;
The swing member includes a first swing member and a second swing member that are spaced apart from each other, and the electromagnet is disposed between the first swing member and the second swing member. And
The magnetic circuit includes a first magnetic circuit that passes through the core and the arm portion of the first swing member, and a second magnetic circuit that passes through the core and the arm portion of the second swing member. ,
The permanent magnet is arranged so as to strengthen the magnetic flux flowing through one of the first magnetic circuit and the second magnetic circuit and weaken the magnetic flux flowing through the other of the first magnetic circuit and the second magnetic circuit. And
The oscillating member oscillates with the other end as a fulcrum by electromagnetic force applied from the electromagnet, and the drive valve that receives the oscillating motion of the oscillating member via the one end includes the valve An electromagnetically driven valve that reciprocates along the direction in which the shaft extends.

The electromagnetically driven valve according to claim 1, wherein the permanent magnet is provided in the core.

The electromagnetically driven valve according to claim 1 or 2, wherein the permanent magnet is provided between the core and the coil.

The permanent magnet is built in the core,
4. The electromagnetically driven valve according to claim 1, wherein the core is divided on the magnetic circuit by the permanent magnet. 5.

2. The electromagnetic drive according to claim 1, wherein the coil includes a first coil facing the arm portion of the first swing member, and a second coil facing the arm portion of the second swing member. valve.

A drive valve having a valve stem;
The drive valve includes a first swing member and a second swing member that are spaced apart from each other, and is connected to the valve shaft and swings between a first position and a second position. An oscillating member that reciprocates along the direction in which the valve shaft extends;
A first magnet that is disposed between the first swing member and the second swing member and passes through the first swing member and the second swing member to apply an electromagnetic force to the swing member. An electromagnet forming a circuit and a second magnetic circuit;
A permanent magnet arranged to strengthen a magnetic flux flowing through one of the first magnetic circuit and the second magnetic circuit and weaken a magnetic flux flowing through the other of the first magnetic circuit and the second magnetic circuit; An electromagnetically driven valve control method comprising:
A first step of starting the swinging member at the first position toward the second position by stopping the current supply to the electromagnet;
An electromagnetically driven valve comprising: a second step of starting current supply to the electromagnet after the first step and before the swinging member reaches an intermediate position between the first position and the second position. Control method.

7. The electromagnetically driven valve according to claim 6, wherein the first position is a swing end on the valve opening side of the drive valve, and the second position is a swing end on the valve closing side of the drive valve. Control method.

7. The electromagnetically driven valve according to claim 6, wherein the first position is a swing end on the valve closing side of the drive valve, and the second position is a swing end on the valve opening side of the drive valve. Control method.