KR101155658B1 - Power saving solenoid valve - Google Patents

Abstract

PURPOSE: A power saving solenoid valve is provided to selectively implement an manual control and an electric control and to stabilize operation of the power saving solenoid valve. CONSTITUTION: A power saving solenoid valve comprises a valve body(10), a valve seat(20), a plunger(30), a core(40), a first coil(L1), a permanent magnet(50), a second coil(L2), a restoring spring(60), and a control circuit. A passage is formed inside the valve body. The valve seat opens and closes the passage of the valve body while sliding. The plunger is coupled to the valve seat and is slid along a longitudinal direction. The core is arranged in a position to be spaced from the plunger and is composed of a ferromagnetic substance. The first coil and the permanent magnet magnetize the core. The second coil attenuates magnetic force of the core magnetized by the permanent magnet. The restoring spring elastically support so that the plunger can be apart from the core. The control circuit controls the operation of the first and second coils.

Description

POWER SAVING SOLENOID VALVE {POWER SAVING SOLENOID VALVE}

The present invention relates to a power saving solenoid valve, and more particularly, to a power saving solenoid valve in which a flow path is opened and closed by electrical control.

The solenoid valve has an electromagnet and a valve, and the magnetic force is changed by the energization of the solenoid coil.

In general, the solenoid valve is arranged in the intermediate position of the flow passage, mainly used for steam, water, refrigerant, etc., and the structure varies depending on the application.

As an example of the prior art document there is disclosed a registered patent No. 476832. This patent is to manually open and close the solenoid valve for unexpected accidents such as power outages.

However, this prior art has a problem that the solenoid valve is operated only manually so that it can not cope quickly in an electrostatic situation.

In addition, since the solenoid valve is not operated against the power failure, there is a problem that the blocking and induction control is not made in time.

Registered Patent # 497632

The present invention has been made in order to solve the above problems, it is possible to selectively perform manual control and electrical control to quickly cope with unexpected accidents such as power outages to provide a power-saving solenoid valve that can be blocked and guided in time It aims to provide.

Other objects of the present invention will become more apparent from the following detailed description and preferred embodiments in which specific advantages and novel features are associated with the accompanying drawings.

Energy-saving solenoid valve according to the present invention, the valve body with a flow path formed therein, a valve seat for opening and closing the flow path of the valve body while the slide operation, the plunger is coupled to the valve seat, the slide along the longitudinal direction, and A core disposed at a position spaced apart from the plunger and made of a ferromagnetic material that is magnetizable, a first coil arranged to magnetize the core while power is applied from the outside, and the core to be magnetized A permanent magnet, a second coil disposed to attenuate the magnetic force of the core magnetized by the permanent magnet while power is applied from the outside, and a resilient spring for elastically supporting the plunger away from the core; It includes a control circuit for controlling the operation of the first coil and the second coil.

In the energy-saving solenoid valve according to the present invention, a plunger shaft fixed to the plunger and extending to be exposed to the outside through the core and a manual operator installed at one end of the plunger shaft to manually slide the plunger shaft Preferably, the manual control unit is fixed to the plunger shaft, the groove is formed in a direction crossing the central axis of the plunger shaft, a portion is protruded and inserted into the groove formed in the block is slide More preferably, a cam, a cam shaft rotatable with the cam while extending from the cam, and a knob fixed to the cam shaft and rotating the cam shaft.

In the power saving solenoid valve according to the present invention, the control circuit includes a first power switch for selectively supplying power, a first relay connected in series with the first power switch, and connected in parallel with the first relay A first capacitor, a first diode connected in series with the first capacitor to block current flow from the first relay, a second relay connected in parallel to the first capacitor, and parallel with the second relay A second capacitor connected to the second capacitor, a second diode connected in series with the second capacitor to block current from flowing in a second relay, a first coil selectively connected in parallel with the second capacitor, and the first coil; A second coil alternately connected to the second capacitor in parallel with the coil, and operated by the first relay to selectively connect the first coil and the second coil to the second capacitor. Is a switch which is switched on / off by a first switching switch and the second relay, and connects a first line and a second line to the first coil and the second coil in parallel. A second switching switch to be connected to the first coil and a point on the line between the second coil and the second switching switch, and the bypass is turned on / off by the first power switch. And a second power switch disposed on the bypass line and configured to turn on / off the bypass line irrespective of the first power switch.

According to the present invention, the present invention can be provided with the convenience of selectively performing manual control and electric control.

In addition, it is possible to quickly cope with unexpected accidents, such as power outages, so that blocking and induction control can be made in a timely manner, the operation of the power-saving solenoid valve can be made stable.

1 is a cross-sectional view showing a closed state of the energy-saving solenoid valve according to an embodiment of the energy-saving solenoid valve according to the present invention;
2 is a cross-sectional view showing an open state of the energy-saving solenoid valve of the embodiment of FIG.
3 is a circuit diagram when a control circuit of an embodiment of a power saving solenoid valve according to the present invention opens the valve;
4 is a circuit diagram when the control circuit of the embodiment of FIG. 3 closes the valve;
5 is a circuit diagram showing an operation during power failure of the control circuit of the embodiment of FIG.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the energy-saving solenoid valve according to the present invention.

1 is a cross-sectional view showing a closed state of a power saving solenoid valve according to an embodiment of the power saving solenoid valve according to the present invention, and FIG. 2 is a cross-sectional view showing an open state of a power saving solenoid valve of the embodiment of FIG. 1.

Energy-saving solenoid valve according to the present invention, the valve body 10, the valve seat 20, the plunger 30, the core 40, the first coil (L1), permanent magnet 50, the second coil (L2) , Restoring spring 60, control circuit 100.

The valve body 10 has a flow path formed therein so that the fluid can flow.

The valve seat 20 opens and closes the flow path of the valve body 10 while sliding, and the valve seat 20 intercepts the fluid passing through the inside of the valve body 10.

The plunger 30 is coupled to the valve seat 20 and slides along the longitudinal direction. The plunger 30 is made of metal and slides away from the valve body 10 by the electromagnet magnetic force when the electromagnet magnetic force is generated. The flow path of the valve body 10 is separated from the flow path of the valve body 10 while the plunger 30 and the valve seat 20 slide together, and the fluid flows.

The core 40 is disposed at a position spaced apart from the plunger 30 and is made of a ferromagnetic material that is a material that can be magnetized. The non-magnetized core 40 is disposed spaced apart from the plunger 30 in a closed state, but the core 40 changed to magnetization slides the plunger 30 toward the core 40 and attaches to the core 40 to open the state. Make it.

The first coil L1 is disposed to magnetize the core 40 while power is applied from the outside. The first coil L1 is disposed around the plunger 30 and the core 40, and the magnetized core 40 due to the first coil L1 disposed around the plunger 30 is connected to the core 40. Slide toward to open the flow path of the valve body 10 that was closed.

The permanent magnet 50 is arranged to magnetize the core 40 in the same manner as the first coil L1. The permanent magnet 50 continuously opens the flow path of the valve body 10 opened by the first coil L1. The permanent magnet 50 is in contact with the lower portion of the second coil (L2), the permanent magnet 50 is disposed around the plunger 30, like the first coil (L1) and the second coil (L2).

The second coil L2 is disposed to attenuate the magnetic force of the core 40 magnetized by the permanent magnet 50 while power is applied from the outside. The second coil L2 is disposed around the plunger 30, is disposed below the first coil L1, and the core 40 whose magnetic force is attenuated by the second coil L2 disposed around the The plunger 30 slides toward the valve body 10 by the elastically supporting force of the restoring spring 60 which will be described below to close the flow path of the valve body 10 which is open.

The resilient spring 60 serves to elastically support the plunger 30 away from the core 40. Normally, the plunger 30 is in contact with the valve body 10 while closing the flow path while being spaced apart from the core 40 due to the elastically supporting force of the restoring spring 60. The core 40 spaced apart from the plunger 30 is magnetized by the first coil L1 to slide the plunger 30 toward the core 40 to open the flow path of the closed valve body 10. This is because the force of the magnetized core 40 is greater than the force that the resilient spring 60 supports elastically. In addition, the valve body 10 in which the flow path is opened can maintain the attachment state with the plunger 30 as the core 40 is magnetized due to the permanent magnet 50, so that the flow path of the valve body 10 is continuously opened. This is because the force of the magnetized core 40 due to the permanent magnet 50 is greater than the elastically supporting force of the restoring spring 60. On the contrary, the plunger 30 attached to the core 40 is attenuated by the core 40 by the second coil L2 and slides toward the valve body 10 due to the restoring spring 60. This is because the force that the resilient spring 60 elastically supports is larger than the magnetic force of the damped core 40.

The yoke 90 is magnetized by the permanent magnet 50 to maintain the open flow path of the valve body 10 together with the permanent magnet 50. The yoke 90 has a cylindrical shape in which the first coil L1, the second coil L2, and the permanent magnet 50 are accommodated, and the yoke 90 is magnetized by the permanent magnet 50 accommodated therein. . The magnetized yoke 90 may keep the flow path of the valve body 10 open because the plunger 30 is still attached to the core 40 even when the power supply to the first coil L1 is stopped. The present invention is installed so that the yoke 90 can accommodate the first coil (L1), the second coil (L2), the permanent magnet 50, the yoke 90 is the first coil (L1), the second coil (L2), the yoke may be omitted if the magnetic force from the permanent magnet 50 is sufficiently transmitted to the core 40.

The plunger shaft 70 is fixed to the plunger 30 and extends through the core 40 to be exposed to the outside. The plunger shaft 70 is fixed to the plunger 30 through a groove formed in the center of the core 40.

Manual manipulator 80 is installed at one end of the plunger shaft 70 to manually slide the plunger shaft 70, the manual manipulator 80 is a block 81, cam 82, cam shaft 83 , Knob 84.

The block 81 is fixed to the plunger shaft 70, and a groove is formed in a direction crossing the central axis of the plunger shaft 70.

A part of the cam 82 protrudes and slides with a groove formed in the block 81.

The camshaft 83 extends from the cam 82 and is rotatable with the cam 82. The camshaft 83 is made in the direction transverse to the slide axis of the plunger shaft 70.

The knob 84 is provided at the other end of the cam shaft 83 to rotate the cam shaft 83. The knob 84 rotates the camshaft 83 in the opening direction, and the plunger 30 slides upward with the plunger shaft 70 due to the rotation of the camshaft 83. On the contrary, when the cam shaft 83 is rotated in the closing direction by the knob 84, the plunger 30 and the plunger shaft 70 slide together downward due to the rotation of the cam shaft 83. In general, the plunger shaft 70 can be manually slided, but the manual override 80 is installed for more effective manual operation.

The control circuit 100 controls the operation of the first coil L1 and the second coil L2.

A control circuit of such a power saving solenoid valve is shown in FIGS. 3 to 5.

Control circuit 100 of the energy-saving solenoid valve according to the present invention, the first power switch 101, the first relay 102, the first capacitor (C1), the first diode 103, the second relay 104 , The second capacitor C2, the second diode 105, the first coil L1, the second coil L2, the first switch 106, the second switch 107, the bypass line 108 ), And a second power switch 109.

The first power switch 101 is an open switch to selectively supply power.

The first relay 102 is connected in series with the first power switch 101 and is operated by the power supplied through the first power switch 101.

The first capacitor C1 is connected in parallel with the first relay 102.

The first diode 103 is connected in series with the first capacitor C1 to block the flow of current to the first relay 102. The first diode 103 is a device that allows current to flow in one direction so that power supplied from the first relays 102 connected in parallel flows toward the first capacitor C1.

The second relay 104 is connected in parallel to the first capacitor C1, and the second relay 104 is operated together with the first relay 102 by the power supplied through the first power switch 101. .

The second capacitor C2 is connected in parallel with the second relay 104.

The second diode 105 is connected in series with the second capacitor C2 to block the flow of current to the second relay 104. The second diode 105 is a device that allows current to flow in one direction so that the power supplied from the second relay 104 connected in parallel flows toward the second capacitor C2.

The first coil L1 is selectively connected in parallel with the second capacitor C2, and the second coil L2 is connected in parallel with the second capacitor C2 by alternating with the first coil L1. The first coil L1 and the second coil L2 may be formed by partitioning one coil as illustrated in FIGS. 3 to 5, but the shape may be changed to another shape as long as it meets the purpose. have.

The first switching switch 106 is operated by the first relay 102 to selectively connect the first coil L1 and the second coil L2 to the second capacitor C2.

The first switching switch 106 is a switch that is switched between the first state and the second state, the first switching switch 106 is to switch the first line 110 when the first state is in the first state by the first relay 102 The first coil L1 is connected in parallel, and in the second state, the second line 120 is connected in parallel with the second coil L2.

The second switching switch 107 is a switch to be switched on (ON) / off (OFF) by the second relay 104, the first line 110 and the second line 120 to the first coil ( It is connected to L1) and the second coil (L2) in parallel.

The bypass line 108 connects power to a point on the line between the first coil L1 and the second coil L2 and the second switching switch 107 and is turned on by the first power switch 101. ON) / OFF (OFF).

The second power switch 109 is disposed on the bypass line 108 to turn on / off the bypass regardless of the first power switch 101.

The first power switch 101 is to open the flow path of the energy-saving solenoid valve to the open switch, due to the power supplied by pressing the first power switch 101 for selectively connecting the power as shown in FIG. The first relay 102 is activated. As the first relay 102 is operated, current passes through the first diode 103. The current passing through the first diode 103 is charged in the first capacitor C1 connected in series, and the current passing through the first diode 103 operates the second relay 104 connected in parallel. As the second relay 104 is operated, current passes through the second diode 105 connected in parallel, and the current passing through the second diode 105 is charged to the second capacitor C2 connected in series. The first switching switch 106 connected in parallel with the second capacitor C2 is switched to the first state by the first relay 102, and the current switched by the first relay 102 to the first state is first. It is transmitted to the first coil (L1) connected in parallel via the first line (110). In addition, power supplied through the first power switch 101 connected to the bypass line 108 is directly transmitted to the first coil L1. As a result, the first coil L1 magnetizes the core 40, and the core 40 magnetized by the first coil L1 slides the plunger 30 toward the core 40 to close the valve body ( Open the flow path of 10).

In addition, the valve body 10 in which the flow path is opened may be maintained even when the power supplied through the first power switch 101 is cut off, but the core 40 magnetized by the permanent magnet 50 may have a plunger ( The attachment state with 30 is maintained to continuously open the flow path of the valve body 10. This is because the force attached to the magnetized core 40 and the plunger 30 due to the permanent magnet 50 is larger than the elastically supporting force of the restoring spring 60, so that the attachment between the core 40 and the plunger 30 is reduced. The state can be kept constant.

The second power switch 109 is a closing switch to close the flow path of the power saving solenoid valve, and as shown in FIG. 4, the second power switch 109 connected to the bypass line 108 to selectively connect power. The power supplied by pressing is directly transmitted to the second coil (L2). Here, the first switch 106 transmits the power to the second coil L2 connected in parallel through the second line 120 in the second state. As a result, the second coil L2 attenuates the magnetic force of the core 40 magnetized by the permanent magnet 50, and the core 40 of which the magnetic force is attenuated is elastically supported by the restoring spring 60. The core 40 and the plunger 30 attached thereto are separated and slide toward the valve body 10 to close the flow path of the valve body 10 which is in an open state. Since the magnetic force of the damped core 40 is smaller than the elastically supporting force of the restoring spring 60, the permanent magnet 50 alone cannot maintain the attachment state between the core 40 and the plunger 30, so that the plunger 30 ) Will be slide towards the valve body 10 while being separated.

On the other hand, when there is a power failure in the process of operating the energy-saving solenoid valve as shown in FIG. 5, the first relay 102 is not operated so that the first switching switch 106 is switched to the second state and the second line 120 is connected to the second coil (L2), the first capacitor (C1) starts to discharge, the current of the first capacitor (C1) that started the discharge is the first diode 103 connected in series to the current It does not flow to one relay 102. The current of the first capacitor C1 operates the second relay 104 connected in parallel. The first capacitor C1 operates the second relay 104 for a predetermined time according to the discharged capacity. The second switching switch 107 is switched to the ON state by the second relay 104. At this time, since the second switching switch 107 is not judged to be a power failure for a predetermined time due to the first capacitor C1, the valve body 10 The flow path continues to open. Since the second relay 104 is not operated while the discharge capacity of the first capacitor C1 is exhausted, the second relay 104 switches the second switching switch 107 to the OFF state. The second switching switch 107 switched to the OFF state due to the non-operating second relay 104 transmits current to the second coil L2 connected in parallel with the second capacitor C2. It is transmitted to the second coil (L2) connected in parallel. As a result, the second coil L2 attenuates the magnetic force of the core 40 magnetized by the permanent magnet 50, and the core 40 of which the magnetic force is attenuated is elastically supported by the restoring spring 60. The core 40 and the plunger 30 attached thereto are separated and slide toward the valve body 10 to close the flow path of the valve body 10 which is in an open state.

An embodiment of the present invention described above and illustrated in the drawings should not be construed as limiting the technical spirit of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention, as will be apparent to those skilled in the art.

10: valve body 20: valve seat
30: Plunger 40: Core
50: permanent magnet 60: restoring spring
70: plunger shaft 80: manual operation
81: block 82: cam
83: camshaft 84: knob
90: yoke 100: control circuit
101: first power switch 102: the first relay
103: first diode 104: second relay
105: second diode 106: first switch
107: second switching switch 108: bypass line
109: second power switch 110: the first line
120: second line C1: first capacitor
C2: second capacitor L1: first coil
L2: 2nd coil

Claims (4)

A valve body having a flow path formed therein,
A valve seat for opening and closing the flow path of the valve body while the slide operation,
A plunger coupled to the valve seat and sliding along the longitudinal direction;
A core disposed at a position spaced apart from the plunger and made of a ferromagnetic material which is a magnetizable material;
A first coil disposed to magnetize the core while power is applied from the outside;
A permanent magnet disposed to magnetize the core,
A second coil disposed to attenuate the magnetic force of the core magnetized by the permanent magnet while power is applied from the outside;
A resilient spring for resiliently supporting the plunger away from the core;
Energy saving solenoid valve comprising a control circuit for controlling the operation of the first coil and the second coil.
The method of claim 1,
The power-saving solenoid valve further comprises a plunger shaft fixed to the plunger and extended to penetrate the core to be exposed to the outside and a manual operator installed at one end of the plunger shaft to manually slide the plunger shaft. .
The method of claim 2,
The manual control unit,
A block fixed to the plunger shaft and having a groove formed in a direction transverse to a central axis of the plunger shaft;
A cam which is partially protruded and inserted and slides into a groove formed in the block;
A camshaft extending from the cam and rotatable with the cam,
And a knob fixed to the camshaft to rotate the camshaft.
The method of claim 1,
The control circuit,
A first power switch for selectively supplying power,
A first relay connected in series with the first power switch;
A first capacitor connected in parallel with the first relay;
A first diode connected in series with the first capacitor and blocking current from flowing through the first relay;
A second relay connected in parallel to the first capacitor;
A second capacitor connected in parallel with the second relay;
A second diode connected in series with the second capacitor and blocking current from flowing through a second relay;
A first coil selectively connected in parallel with the second capacitor,
A second coil alternately connected to the first coil and connected in parallel with the second capacitor;
A first switching switch operated by the first relay to selectively connect the first coil and the second coil to the second capacitor;
A switch that is switched on / off by the second relay, the second switching switch connecting the first line and the second line to the first coil and the second coil in parallel;
A bypass line which connects power to a point on the line between the first coil and the second coil and the second switching switch and is turned on / off by the first power switch;
And a second power switch disposed on the bypass line to turn on / off the bypass line irrespective of the first power switch.

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