Self-holding solenoid valve
A solenoid valve and self-maintaining technology, applied in the field of solenoid valves, can solve the problems of lowering the driving voltage and voltage value, difficulty in closing the solenoid valve, etc.
Active Publication Date: 2018-11-16
RINNAI CORP
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Problems solved by technology
[0007] However, for the self-holding solenoid valve proposed above, there is a problem in that the drive voltage applied to the solenoid coil is set to be low when the valve is closed. If the battery continues to be consumed, the voltage value of the drive voltage will decrease, and the offset will be offset. The magnetic force of the permanent magnet magnetic force is reduced, making it difficult to close the solenoid valve
Method used
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Embodiment Construction
[0030] figure 1 It is an explanatory diagram showing the internal structure and operating principle of a self-holding solenoid valve (hereinafter referred to as a lock valve) 100 of this embodiment. exist figure 1 (a) shows a cross-sectional view of the lock valve 100 in the closed state, in figure 1 (b) is a cross-sectional view of the lock valve 100 in an open state. First, refer to figure 1 (a) A rough internal structure of the lock valve 100 will be described.
[0031] Such as figure 1 As shown in (a), the lock valve 100 has: an electromagnetic coil 102 formed into a hollow substantially cylindrical shape by winding an electric wire; a movable iron core 104 inserted into the central axis of the electromagnetic coil 102 in a slidable state; The fixed iron core 106 is fixed at a position above the movable iron core 104 in the central axis of the electromagnetic coil 102; the disc-shaped permanent magnet 108 is arranged to be in contact with the upper end of the fix...
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The invention provides a self-maintaining electromagnetic valve capable of realizing valve closing regardless of the battery consumption. In a state that the voltage of a power supply is not reduced, coil current is sharply increased due to the exertion of the driving voltage, so that the part favorable for the valve closing of the electromagnetic valve is a part with the coil current passing through the valve closing range immediately after the driving voltage exertion. At the moment, if the driving voltage is shortly exerted in multiple times, the valve closing occasion of the electromagnetic valve can be increased; the valve can be reliably closed. On the other hand, in the state that the voltage of the power supply is reduced, compared with the condition that the voltage of the power supply is not reduced, the condition is that the coil current is reduced along with the driving voltage reduction; in addition, the increase trend of the coil current becomes gentle. Under the condition, if the number of exerting times of the driving voltage is reduced and the exerting time in each time is prolonged, the coil current can be increased, and the electromagnetic valve is remained in the valve closing range for a long time, so that the electromagnetic valve realizes the reliable valve closing.
Description
technical field [0001] The present invention relates to a solenoid valve (self-holding type solenoid valve) capable of maintaining the switched on-off state even if the energization is stopped after the electromagnetic coil is energized to switch the on-off state. Background technique [0002] The self-holding type solenoid valve needs to energize the solenoid coil when switching between the valve open state and the valve closed state, but has an excellent characteristic of being able to maintain the state of the solenoid valve without continuing to flow the current after the switching is completed. Therefore, electric power consumption can be suppressed, and it is especially widely used as a solenoid valve operated using a battery. [0003] This self-holding solenoid valve operates based on the following principle. First, when the electromagnetic coil is energized, the movable iron core biased by the valve closing spring is pulled into the electromagnetic coil, the valve c...
Claims
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IPC IPC(8): F16K31/06F16K1/00
Inventor 野野山昌生
Owner RINNAI CORP