JP3126993U - Solenoid valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide common parts for both a solenoid that operates when retracted and opens a valve and a solenoid that operates when pushed out and closes the valve.
SOLUTION: A solenoid 10 for moving a rod 11 in one direction from an origin position when energized, and a spring 14 for returning the rod 11 to an origin position when the solenoid 10 is not energized, a fluid path as the rod 11 moves. This is a solenoid valve that controls a ball bubble that opens and closes the rod, and the rod 11 can be selectively provided with a ball valve on either side.
[Selection] Figure 1

Description

  The present invention relates to a solenoid valve mainly used in an air conditioning system for an aircraft.

  Pneumatically operated valves are used in aircraft air conditioning systems and the like for purposes such as air flow rate adjustment and shutoff. For example, as shown in FIG. 3, it is configured to open and close the butterfly valve 102 by passing the air pressure upstream of the butterfly valve 102 to the actuator 105 of the butterfly valve 102. A ball valve 100a (hereinafter referred to as a solenoid valve 100) by solenoid operation is installed, and the ball valve 100a is opened and closed by energizing or de-energizing the solenoid. The solenoid retracts or pushes out the armature when energized, so that the ball 112 of the ball valve 111 in FIGS. 4 and 5 moves and the fluid path is opened, so that the pressure to the cylinder 106 of the actuator 105 is changed to the valve upstream pressure or At atmospheric pressure, the butterfly valve 102 is opened and closed.

  By the way, this type of solenoid valve 100 has a pull-in operation type (FIG. 4) that pulls in the armature 113 and the rod 114 when energizing the coil 115, and a push-out operation type that pushes out the armature 113 and the rod 114 when energized ( There are two types, as shown in FIG. 5, which are properly used depending on whether the valve is in an open state or not in a non-energized state.

  In addition, in order to shorten the energization time in consideration of power saving, etc., in the case of the usage mode of “close time”> “open time” of the valve, a retracting operation type that opens the valve when energized (no energization, valve closed), In the case of the usage mode of “validation time” <“opening time” of the valve, there is also a proper use such as a push-out operation type that closes the valve when energized (no valve energized, valve open).

  However, whether to pull the armature 113 or push it out when energized is determined at the design stage, and separate solenoid valves 100 are required, and cannot be changed after manufacturing.

In addition, the solenoid valve 100 needs to be provided with separate parts, except for some parts such as the coil 114, according to the pull-in type and the push-out type, and the parts cannot be shared. Invite up.

Furthermore, whether or not the solenoid attached to the solenoid valve 100 is operating properly cannot be confirmed when attached to the solenoid valve 100, and cannot be confirmed unless some parts are disassembled.

  The present invention solves the above-described problems, and provides a solenoid valve that can cope with common parts regardless of whether the solenoid opens when the valve is retracted or the solenoid closes when the solenoid is pushed out. For the purpose.

  The present invention includes a solenoid that moves the rod in one direction from the origin position when energized, and a spring that returns the rod to the origin position when the solenoid is not energized, and opens and closes the fluid path as the rod moves The rod is configured such that a valve portion can be selectively disposed on either side of the rod.

  In addition, a cap is attached to the end of the rod where the valve portion is not disposed so that the rod is not exposed to the outside.

  Furthermore, a sensor for detecting the amount of advancement / retraction of the rod is attached to the both ends of the rod where the valve portion is not disposed.

  In the present invention, since two types of solenoids having different pull-in operations and push-out operations when energized can be realized by a common solenoid, it is possible to share parts and contribute to cost reduction. Moreover, it becomes possible to confirm the operation | movement in the state attached to the valve | bulb. In addition, when removing the solenoid cap and checking the operation of the amateur, it is possible to check the operation of the solenoid at a remote location by attaching a switch circuit that turns ON / OFF with the stroke of the amateur instead of the cap. It becomes.

  This embodiment will be described below with reference to FIGS. As shown in FIG. 3, the flow rate adjustment mechanism of the aircraft air conditioner controls the opening / closing control of the butterfly valve 102 provided in the pipe 101 with respect to the passage amount of the fluid flowing through the pipe 101 (engine bleed air used for air conditioning). It is adjusted by this. The butterfly valve 102 is driven by an actuator 105 that uses the pressure of the fluid flowing through the pipe 101 without separately using electrical energy or the like.

  Specifically, the fluid is led from the upstream of the butterfly valve 102 in the pipe 101 through the introduction passage 103, and is set to a predetermined amount for driving the actuator 105 through the solenoid valve 100, and the actuator 105 for driving the butterfly valve 102. It is supplied to the cylinder 106. The cylinder 106 is provided with a piston 107 that can advance and retreat. When a fluid is supplied, the fluid pressure pushes the piston 107 downward in the figure against the urging force of the spring 108, and the butterfly valve 102 is connected via the link mechanism 109. Is configured to open.

  The present embodiment is particularly characterized by the solenoid valve 100 and will be described with reference to FIGS. This solenoid 10 includes a magnetic core composed of a rod 11 and an armature 12 fixed to the rod 11, a coil 13 that generates magnetism by passing a current, a spring 14 that urges a force in a direction to return the rod 11 to the origin, The frame 15 that accommodates these is the main component. The rod 11 has a length such that a part of the rod 11 protrudes from the frame 15 on both sides along the axial center. When energized, the rod 11 moves upward in the figure, so that the lower end of the rod 11 is The upper end is pushed out from the frame 15 side.

  Thus, when such a solenoid 10 is used as a retractable solenoid valve, the cap 16 is covered with a cap 16 so as not to expose the upper end of the rod 11 unnecessary for the operation of the valve as shown in FIG. The lower end of the rod 11 is configured to contact a ball of a ball valve (not shown). When no current is applied, the ball valve is closed by transmitting the urging force of the spring 14 to the ball by the rod 11, and when energized, the rod 11 is moved by electromagnetic force to release the ball from the urging force of the spring 14. The ball valve opens.

  Further, when used for an extrusion-type solenoid valve, the lower end side of the rod 11 unnecessary for the operation of the valve is covered with a cap 16 as shown in FIG. The upper end of the rod 11 is configured to contact the ball of the ball valve. Then, when energized, the ball valve is closed by transmitting electromagnetic force to the ball by the rod 11, and when not energized, the rod 11 is moved in the direction of the origin by the biasing force of the spring 14 to release the ball, The ball valve opens.

  In addition, as described above, the rod 11 on the side unnecessary for the operation of the ball valve is covered with the cap 16, so that the rod 11 can be protected or protected from unnecessary invading objects such as dust.

  Further, by removing the cap 16, it is also possible to check the operation of the solenoid 10 by monitoring the advance and retreat of the rod 11. Further, the operation of the solenoid 10 can be confirmed even at a remote location by removing the cap 16 and attaching a switch circuit that is turned ON / OFF by the stroke of the rod 11.

The schematic block diagram in the case of using the solenoid valve of a present Example as a drawing-in action type | mold. The schematic block diagram in the case of using the solenoid valve of a present Example as an extrusion action | operation type. The schematic block diagram regarding the pneumatically-actuated valve incorporating the solenoid valve. FIG. 6 is a schematic configuration diagram of a conventional retractable solenoid valve. The schematic block diagram of the conventional pushing action | operation type | mold solenoid valve.

Explanation of symbols

10 Solenoid 11 Rod 12 Amateur 13 Coil 14 Spring 15 Frame 16 Cap

Claims (3)

A solenoid that moves the rod in one direction from the origin position when energized, and a spring that returns the rod to the origin position when the solenoid is not energized, controls the valve unit that opens and closes the fluid path as the rod moves It is a solenoid valve, Comprising: The said rod is comprised so that the said valve | bulb part can be selectively arrange | positioned in any of both ends. 2. The solenoid valve according to claim 1, wherein a cap is attached to one of the both ends of the rod where the valve portion is not disposed so that the rod is not exposed to the outside. The solenoid valve according to claim 1, wherein a sensor for detecting an advance / retreat amount of the rod is attached to a side of the rod where the valve portion is not disposed on both ends.

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