KR20150122829A - Water supply valve - Google Patents

Abstract

Disclosed is a water supply valve. According to an embodiment of the present invention, the water supply valve comprises: a first opening and closing part including a first plunger to open and close a first flow path wherein water flows, and a first solenoid to move the first plunger; and a second opening and closing part including a second plunger to close a second flow path connected with the first flow path only when the first opening and closing part is failed, and a second solenoid to move the second plunger. The sizes of an electromagnetic force applied to the first plunger to maintain the first plunger in an open position, and an electromagnetic force applied to the first plunger in the first solenoid to move the first plunger to an open position to open from a close position to close the first flow path can be different.

Description

Water supply valve {WATER SUPPLY VALVE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply valve, and more particularly, to a water supply valve that prevents heat generation from occurring in a solenoid for moving a plunger that opens and closes a flow path through which water flows.

The water supply valve is a device for supplying water to a water treatment device such as a water purifier. For this purpose, the water supply valve is connected to a water supply source such as a water supply, and a water treatment apparatus.

A flow path through which water flows is formed in the water supply valve. By opening and closing the flow path, water in the water supply source is supplied to the water treatment apparatus or the like, or water supply to the water treatment apparatus is stopped.

A solenoid for moving the plunger and the plunger is provided in the water supply valve to open and close the flow path.

When the solenoid is energized, the plunger moves between a closed position for closing the flow path and an open position for opening the flow path, thereby opening and closing the flow path.

In the water supply valve, the passage is opened and closed relatively frequently. Therefore, as described above, a relatively large amount of heat is generated in the solenoid to which electricity is applied.

Such heat generation causes thermal deformation in the bobbin member made of a synthetic resin, in which a solenoid is provided and a plunger is movably provided.

As described above, when thermal deformation occurs in the water supply valve, the water supply valve is broken and a malfunction occurs.

Accordingly, there is a need to provide a water supply valve that does not suffer from such a problem.

On the other hand, the water supply valve may be provided with an auxiliary plunger and a solenoid for closing the flow path when the main plunger and the solenoid fail, in addition to the main plunger and the solenoid for continuously opening and closing the flow path, .

As described above, the auxiliary plunger must open the flow path at the time of normal operation of the main plunger and the solenoid. However, the auxiliary plunger can move due to external impact and close the flow path even when the main plunger and the solenoid are normally operated.

Therefore, there is a need to provide a water supply valve that does not cause such a problem.

The present invention is realized by recognizing at least any one of the requirements or problems occurring in the conventional water supply valve.

One aspect of the object of the present invention is to reduce the heat generated in the water supply valve.

Another aspect of the present invention is to prevent thermal deformation from occurring in the water supply valve so that damage or malfunction of the water supply valve does not occur.

Another aspect of the present invention is that the second opening / closing part for closing the second flow path connected to the first flow path does not close the second flow path during normal operation of the first opening / closing part when the first opening and closing part malfunctions.

A water supply valve according to an embodiment for realizing at least one of the above problems may include the following features.

A water supply valve according to an embodiment of the present invention includes a first opening / closing part including a first plunger for opening / closing a first flow path through which water flows, and a first solenoid for moving the first plunger; A second opening and closing part including a second plunger for closing the second flow path communicating with the first flow path only when the first opening and closing part fails, and a second solenoid for moving the second plunger; And an electromagnetic force acting on the first plunger in the first solenoid and an electromagnetic force acting on the first plunger in the open position to move the first plunger from the closed position to close the first flow path to the open position, The magnitude of the electromagnetic force acting on the first plunger can be made different.

In this case, when the first plunger is moved from the closed position to the open position, the starting voltage applied to the first solenoid and the holding voltage applied to the first solenoid are different from each other when the first plunger is held in the open position .

Further, the holding voltage can be made smaller than the starting voltage.

The first plunger may be elastically supported by the first elastic member.

The second opening and closing portion may further include a magnetic force generating member that applies a magnetic force to the second plunger, which is moved from a closed position to close the second flow path to an open position where the second plunger is opened, to keep the open position.

The magnetic force generating member may be a permanent magnet.

In addition, after the second plunger is moved to the open position, the second solenoid may periodically apply an electromagnetic force to the second plunger.

The drive voltage may be periodically applied to the second solenoid after the drive voltage is applied to the second solenoid so that the second plunger is moved to the open position.

The second plunger may be elastically supported by the second elastic member.

The first opening and closing part and the second opening and closing part may be integrally formed.

The first plunger and the first solenoid are provided in a first driving body connected to the valve body, and the second plunger and the second solenoid are connected to the valve body. May be provided on a second driving body connected to the valve body.

The first opening / closing part and the second opening / closing part may be separately formed, and the first flow path and the second flow path may be connected by a connection pipe.

Also, the first flow path is formed in the first valve body, the first plunger and the first solenoid are provided in the first drive body connected to the first valve body, and the second flow path is formed in the second valve body And the second plunger and the second solenoid may be provided in a second driving body connected to the second valve body.

The first driving body is provided with a first insertion hole, the first insertion hole is provided with the first solenoid on the outer periphery thereof, and a first moving hole is formed therein in which the first plunger is movably provided A first bobbin member may be provided.

The second driving body is provided with a second insertion hole, and the second insertion hole is provided with the second solenoid on the outer periphery thereof and a second movement hole in which the second plunger is movably provided. 2 bobbin member may be provided.

The first moving hole may include a first core member to which a first elastic member for elastically supporting the first plunger is connected.

Further, a second elastic member for elastically supporting the second plunger is connected to the second moving hole, and a magnetic force generating member for applying a magnetic force to maintain the open position of the second plunger to open the second flow path is provided The second core member may be provided.

One side of the first yoke member may be connected to one side of the first driving body so as to contact the first core member, and the other side of the first yoke member may be connected to the other side of the first driving body.

One side of the second yoke member may be connected to one side of the second driving body to contact the second core member, and the other side of the second yoke member may be connected to the other side of the second driving body.

The first flow path includes a first opening and closing hole that is opened and closed by the first plunger, and the second flow path includes a second opening and closing hole that is opened and closed by the second plunger.

As described above, according to the embodiment of the present invention, when the first flow path is opened by the first plunger and when the first flow path is opened, the magnitude of the electromagnetic force acting on the first plunger in the first solenoid is different from that in the water supply valve Can be reduced.

In addition, according to the embodiment of the present invention, thermal deformation does not occur in the water supply valve, so that breakage or malfunction of the water supply valve may not occur.

In addition, according to the embodiment of the present invention, even when the second plunger of the second opening and closing part that closes the second oil connected to the first flow path opens the second flow path when the first opening and closing part malfunctions, It is possible to prevent the second opening and closing part from closing the second flow path during normal operation of the first opening and closing part by periodically applying an electromagnetic force to the plunger.

1 is a perspective view of a water supply valve according to an embodiment of the present invention.
2 is an exploded perspective view of a water supply valve according to an embodiment of the present invention.
3 is a cross-sectional view taken along line A-A 'in Fig.
4 to 6 are sectional views of the water supply valve according to an embodiment of the present invention, as shown in FIG.
FIG. 7 is a graph illustrating a voltage applied to the first solenoid included in the first opening / closing part of the water supply valve according to the embodiment of the present invention when the state is changed to the state shown in FIG.
FIG. 8 is a graph showing a voltage applied to a second solenoid included in a second opening / closing part of the water supply valve according to an embodiment of the present invention after switching and after switching to the state shown in FIG.
9 is a sectional view of a water supply valve according to another embodiment of the present invention.

In order to facilitate understanding of the features of the present invention as described above, the water supply valve related to the embodiment of the present invention will be described in more detail.

Hereinafter, exemplary embodiments will be described based on embodiments best suited for understanding the technical characteristics of the present invention, and the technical features of the present invention are not limited by the illustrated embodiments, It is to be understood that the present invention may be implemented as illustrated embodiments. Therefore, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. In order to facilitate understanding of the embodiments to be described below, in the reference numerals shown in the accompanying drawings, the related elements among the elements that perform the same function in the embodiments are indicated by the same or an extension line number.

FIG. 1 is a perspective view of a water supply valve according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a water supply valve according to an embodiment of the present invention, and FIG. 3 is a sectional view taken along line A-A ' .

4 to 6 are sectional views showing the operation of the water supply valve according to an embodiment of the present invention, as shown in FIG.

7 is a graph showing a voltage applied to the first solenoid included in the first opening / closing part of the water supply valve according to the embodiment of the present invention when the state is changed to the state shown in FIG. 5, and FIG. 8 is a graph And a second solenoid included in a second opening and closing part of the water supply valve according to an embodiment of the present invention.

The water supply valve 100 according to an embodiment of the present invention may include a first opening and closing part 200 and a second opening and closing part 300 as shown in FIGS. The first opening and closing part 200 and the second opening and closing part 300 may be integrally formed as shown in FIG.

However, the first opening and closing part 200 and the second opening and closing part 300 may be separately formed as described later and as shown in FIG.

The first opening /

The first opening and closing part 200 may include a first plunger 220 and a first solenoid 230. The first plunger 220 opens and closes the first flow path 210 through which water flows as shown in FIGS. Also, the first solenoid 230 moves the first plunger 220.

The first solenoid 230 may generate an electromagnetic force when electricity is applied. The first plunger 220 may be made of a material, for example, metal, which is affected by an electromagnetic force.

Accordingly, the first plunger 220 can be moved by the electromagnetic force generated in the first solenoid 230. The electromagnetic force generated in the first solenoid 230 causes the first plunger 220 to move to the closed position to close the first flow path 210 as shown in FIG. And opens and closes the first flow path 210 by moving between the open positions where the flow path 210 is opened.

The first flow path 210 may be formed in one valve body BV together with a second flow path 310, which will be described later, as shown in FIG. In addition, the first flow path 210 is connected to a water supply source (not shown) such as a water line by a connection pipe. Accordingly, water in the water supply source can flow into the first flow path 210.

The first flow path 210 may include a first opening / closing hole 211 opened / closed by the first plunger 220. 4, when the first open / close hole 211 is closed by the movement of the first plunger 220 to the closed position, the water introduced into the first flow path 210 flows into the first flow path 210 And does not flow into the second flow path 310, which will be described later, of the second opening and closing part 300 connected thereto. 5, when the first open / close hole 211 is opened by the movement of the first plunger 220 to the open position, the water introduced into the first flow path 210 flows into the second flow path 220 ).

The first plunger 220 may be provided at one end with a sealing member O to facilitate opening and closing of the first opening and closing hole 211.

3, the first flow path 210 includes a first inlet hole 212, a first plunger insertion hole 213, and a first outlet hole 214 in addition to the first opening / closing hole 211 .

The first intake hole 212 is connected to a water source. Accordingly, the water of the water supply source can flow into the first flow path 210 through the first intake hole 212.

The first plunger insertion hole 213 is connected to the first opening / closing hole 211 and the first intake hole 212. One end of the first plunger 220 can be inserted into the first plunger insertion hole 213.

As a result, one end of the first plunger 220 is inserted into the first plunger insertion hole 213 and moved, thereby closing the first opening / closing hole 211 as shown in FIG. 4, The first opening / closing hole 211 can be opened.

The first outlet hole 214 is connected to the first opening / closing hole 211. 4, when the first plunger 220 closes the first open / close hole 211, the water flowing into the first water intake hole 212 flows only to the first plunger insertion hole 213. As shown in FIG.

5, when the first plunger 220 opens the first open / close hole 211, the water introduced into the first intake hole 212 flows into the first plunger insertion hole 213 and the first plunger And flows into the first water outlet hole 214 through the opening / closing hole 211. Thus, the water flowing into the first water outlet hole 214 flows into the second flow path 310 of the second opening and closing part 300.

On the other hand, a portion of the first outflow hole 214 that is open to the outside can be closed by fitting a closing member CL as shown in Fig.

As shown in FIGS. 2 and 3, the first plunger 220 and the first solenoid 230 may be provided on the first driving body BD1 connected to the valve body BV. The first drive body BD1 may be connected to the valve body BV by a coupling member AS as shown. However, the structure in which the first drive body BD1 is connected to the valve body BV is not particularly limited, and any known construction such as being connected by fitting or the like is possible.

As shown in FIG. 3, a sealing member O (O) such as O-ring is provided on the connection portion between the first driving body BD1 and the valve body BV so that the water in the first flow path 210 is not leaked to the outside through the connection portion. May be provided.

As shown in FIG. 2, a first insertion hole IS1 may be formed in the first driving body BD1. A first bobbin member 250 may be provided in the first insertion hole IS1. The first solenoid 230 is provided on the outer periphery of the first bobbin member 250.

A first moving hole 251 may be formed in the first bobbin member 250. The first moving hole 251 of the first bobbin member 250 is communicated with the first plunger insertion hole 213 of the first flow path 210 described above. The water introduced into the first plunger insertion hole 213 of the first flow path 210 flows into the first movement hole 251 of the first bobbin member 250 through the first plunger insertion hole 213 .

The first plunger 220 is movably provided in the first moving hole 251 of the first bobbin member 250.

A first elastic member 240 may be provided on the first moving hole 251 of the first bobbin member 250 to elastically support the first plunger 220 as shown in FIG. The first moving hole 251 may be provided with a first core member 260 to which the first elastic member 240 is connected.

The first moving hole 251 between the first core member 260 and the first bobbin member 250 may be provided with a sealing member O such as an O-ring. Accordingly, it is possible to prevent the water flowing into the first moving hole 251 from leaking to the outside.

One side of the first yoke member 270 is connected to one side of the first driving body BD1 to be in contact with the first core member 260. The other side of the first driving body BD1, The other side of the first yoke member 270 may be connected.

For this, the first yoke member 270 may have a 'C' shape in cross section as shown in FIG. However, the shape of the first yoke member 270 is not particularly limited, and one side of the first yoke member 270 may be connected to the first core member 260 on one side of the first driving body BD1 and the other side thereof may be connected to the first driving body BD1, Any shape can be used as long as the shape can be connected to the other side of the frame.

With such a configuration, the first plunger 220 can be easily moved by generating an electromagnetic force of a desired magnitude easily in the first solenoid 230.

However, the configuration including the first solenoid 230 for moving the first plunger 220 is not particularly limited, and any well-known configuration is possible as long as the first plunger 220 can be easily moved .

In order to move the first plunger 220 from the closed position to the open position in the water supply valve 100 according to the embodiment of the present invention, the electromagnetic force acting on the first plunger 220 at the first solenoid 230 The magnitude of the electromagnetic force acting on the first plunger 220 can be made different in order to keep the first plunger 220 in the open position.

When the first plunger 220 is moved from the closed position to the open position and the first voltage V1 applied to the first solenoid 230 and the first plunger 220 are maintained at the open position, The sustain voltage V2 applied to the solenoid 230 can be made different.

Further, as shown in Fig. 7, the holding voltage V2 can be made smaller than the starting voltage V1.

When the first plunger 220 is in the closed position as shown in FIG. 4, the first plunger 220 is in contact with water other than the self weight of the first plunger 220 and the elastic force of the first elastic member 240 The force due to water pressure due to the difference in area between the lower surface and the upper surface of the first plunger 220 acts in the same direction, that is, in the downward direction.

However, when the first plunger 220 is in the open position, only the self weight of the first plunger 220 and the elastic force of the first elastic member 240 act on the first plunger 220 in the downward direction.

Therefore, the first plunger 220 can be held in the open position even with a force smaller than the force for moving the first plunger 220 from the closed position to the open position.

The first plunger 220 can be moved to the first plunger 220 only by the self weight of the first plunger 220 and the elastic force of the first elastic member 240 without applying an electromagnetic force to the first plunger 220 in the first solenoid 230. [ It is possible to move to the closed position for closing the opening / closing hole 211.

Therefore, when the first plunger 220 is moved from the closed position to the open position by holding the holding voltage V2 applied to the first solenoid 230 when the first plunger 220 is held in the open position, The opening / closing of the first opening / closing hole 211 by the first plunger 220 can be performed even if the starting voltage V1 applied to the first plunger 230 is smaller than the starting voltage V1 applied to the first plunger 230.

If the voltages applied to the first solenoid 230 are different from each other, the heat generated in the first solenoid 230 can be reduced by the applied voltage.

Therefore, it is possible to prevent thermal deformation from occurring in the first bobbin member 250 having the water supply valve 100, for example, the first solenoid 230 according to an embodiment of the present invention, 100 can be prevented from being damaged or malfunctioned.

The second opening /

The second opening and closing part 300 may include a second plunger 320 and a second solenoid 330. The second plunger 320 closes the second flow path 310 communicated with the first flow path 210 only when the first opening and closing part 200 fails, as shown in FIG.

Therefore, as shown in FIGS. 4 and 5, when the first opening and closing part 200 is not broken, the second opening and closing part 200 always opens the second flow path 310.

Accordingly, when the first opening and closing part 200 fails, water can not be supplied through the water supply valve 100 according to an embodiment of the present invention.

Also, the second solenoid 330 moves the second plunger 320.

The second solenoid 330 can generate an electromagnetic force when electricity is applied. The second plunger 320 may be made of a material, for example, a metal, which is affected by an electromagnetic force.

Accordingly, the second plunger 320 can be moved by the electromagnetic force generated in the second solenoid 330. The electromagnetic force generated by the second solenoid 330 causes the second plunger 320 to move between a closed position for closing the second flow path 310 as shown in FIG. 6 and a closed position for closing the second flow path 310 as shown in FIGS. 4 and 5 And moves between the open positions where the second flow path 310 is opened, thereby opening and closing the second flow path 310.

The second flow path 310 opened and closed by the second plunger 320 may be formed in one valve body BV together with the first flow path 210 as described above and shown in FIG.

The second flow path 310 may include a second opening / closing hole 311 that is opened / closed by the second plunger 320. 6, when the second open / close hole 311 is closed by the movement of the second plunger 320 to the closed position, the water introduced into the second flow path 310 flows into the second flow path 310 (Not shown) or the like connected thereto.

4 and 5, when the second open / close hole 311 is opened by the movement of the second plunger 320 to the open position, the water introduced into the second flow path 310 is connected Such as a water treatment device.

On the other hand, the sealing member O may be provided at one end of the second plunger 320 to facilitate opening and closing of the second opening / closing hole 311.

The second flow path 310 is provided with the second intake hole 312, the second plunger insertion hole 313, and the second water outlet hole 314 in addition to the second opening / closing hole 311 as shown in Fig. 3 .

The second intake hole 312 is connected to the first flow path 210. 3, the second intake hole 312 may be integrally formed with the first outlet hole 214 of the first flow path 210 and connected to the first flow path 210.

5, when the first open / close hole 211 of the first opening and closing part 200 is opened, the water in the first flow path 210 flows into the second water intake hole 312.

However, the configuration in which the second intake hole 312 is connected to the first flow path 210 is not particularly limited and may be a separate connection hole (not shown) formed in the valve body BV if it can be connected to the first flow path 210 (Not shown) connected to the first flow path 210 by way of example.

The second plunger insertion hole 313 is connected to the second opening / closing hole 311 and the second intake hole 312. One end of the second plunger 320 can be inserted into the second plunger insertion hole 313.

As a result, one end of the second plunger 320 is inserted and moved into the second plunger insertion hole 313 to close the second opening / closing hole 311 as shown in Fig. 6, The second opening / closing hole 311 can be opened as shown in FIG.

The second outlet hole 314 is connected to the second opening / closing hole 311. 6, in a state in which the first plunger 220 can not close the first opening / closing hole 211 due to the failure of the first opening and closing part 200, the second plunger 320 moves to the second open / The water flowing into the second water intake hole 312 flows only to the second plunger insertion hole 313.

5, when the first plunger 220 opens the first open / close hole 211 while the second plunger 320 opens the second open / close hole 311, The water flowing into the second intake hole 312 flows into the second intake hole 314 through the second plunger insertion hole 313 through the second opening and closing hole 311. [

Then, the water that has flowed into the second water outlet hole 314 flows to a device such as a water treatment apparatus connected to the second water outlet hole 314.

As shown in FIGS. 2 and 3, the second plunger 320 and the second solenoid 330 may be provided on the second driving body BD2 connected to the valve body BV. The second drive body BD2 may be connected to the valve body BV by a coupling member AS as shown.

However, the structure in which the second drive body BD1 is connected to the valve body BV is not particularly limited, and any known construction such as being connected by fitting or the like is possible.

3, in order to prevent water in the second flow path 310 from leaking to the outside through a connection part, a sealing member O (O) such as O-ring is provided at a connection part between the second driving body BD2 and the valve body BV, May be provided.

As shown in FIG. 2, a second insertion hole IS2 may be formed in the second driving body BD2. And a second bobbin member 360 may be provided in the second insertion hole IS2. A second solenoid 330 is provided on the outer periphery of the second bobbin member 360.

A second moving hole 261 may be formed in the second bobbin member 360. The first moving hole 261 of the second bobbin member 360 communicates with the second plunger insertion hole 313 of the second flow path 310 described above. The water introduced into the second plunger insertion hole 313 of the second flow path 310 flows into the first moving hole 361 of the second bobbin member 360 through the second plunger insertion hole 313 .

A second plunger 320 is movably provided in the second moving hole 361 of the second bobbin member 360.

A second elastic member 350 may be provided on the second moving hole 261 of the second bobbin member 360 to elastically support the second plunger 320 as shown in FIG. The second moving hole 361 may be provided with a second core member 370 to which the second elastic member 350 is connected.

The second moving hole 361 between the second core member 370 and the second bobbin member 360 may be provided with a sealing member O such as an O-ring. Thereby, it is possible to prevent the water flowing into the second moving hole 361 from leaking to the outside.

One side of the second yoke member 380 is connected to one side of the second driving body BD2 to be in contact with the second core member 370 and the other side of the second driving body BD2, The other side of the second yoke member 380 may be connected.

For this purpose, the second yoke member 380 may have a 'C' shape in cross section as shown in FIG. However, the shape of the second yoke member 380 is not particularly limited. One side of the second yoke member 380 is connected to one side of the second driving body BD2 so as to be in contact with the second core member 370 and the other side thereof is connected to the second driving body BD2. Any shape can be used as long as the shape can be connected to the other side of the frame.

With this configuration, the second solenoid 330 can easily generate an electromagnetic force of a desired magnitude, so that the first plunger 320 can be easily moved.

However, the configuration including the second solenoid 330 for moving the second plunger 320 is not particularly limited, and any known configuration may be used as long as the second plunger 320 can be easily moved .

The second opening and closing part 300 may further include a magnetic force generating member 340. A magnetic force may be generated in the magnetic force generating member 340. [ The second plunger 320 moved from the closed position closing the second flow path 310 to the open position opened by the magnetic force generated by the magnetic force generating member 340 can be kept in the open position.

This allows the second plunger 320 to move from the closed position to the open position with relatively little electromagnetic force generated by the second solenoid 330. Even after the second plunger 320 has moved to the open position, the second solenoid 330 does not continue to apply the electromagnetic force to the second plunger 320, the magnetic force generated by the magnetic force generating member 340 The second plunger 320 can maintain the open position.

The second plunger 320 can also be moved from the open position to the closed position with relatively little electromagnetic force generated by the second solenoid 330. Even if the second solenoid 330 does not continuously apply the electromagnetic force to the second plunger 320 after the second plunger 320 moves to the closed position, the weight of the second plunger 320, The second plunger 320 can be held in the closed position by the elastic force of the elastic member 350.

The magnetic force generating member 340 may be a permanent magnet. However, the magnetic force generating member 340 is not particularly limited, and any known magnetic member such as an electromagnet can be used as long as it can generate magnetic force.

The magnetic force generating member 340 may be provided on the second core member 370 as shown in FIG. However, the position of the magnetic force generating member 340 is not particularly limited, and any position can be used as long as the second plunger 320 can act on the second plunger 320 so that the second plunger 320 maintains the open position.

In the second solenoid 330, after the second plunger 320 is moved to the open position as shown in FIGS. 4 and 5, the second plunger 320 can periodically apply an electromagnetic force to the second plunger 320. 8, after the driving voltage V3 is applied to the second solenoid 330 so that the second plunger 320 is moved to the open position, the driving voltage V3 is periodically applied to the second solenoid 330 V3) can be applied.

The second plunger 320 is prevented from being influenced by the magnetic force of the magnetic force generating member 340 due to external impact in a state in which the second plunger 320 keeps the open position by the magnetic force of the magnetic force generating member 340 The second plunger 320 can be moved to the open position again by the driving voltage V3 periodically applied to the second solenoid 330. In this case,

Other Example

9 is a sectional view of a water supply valve according to another embodiment of the present invention.

The water supply valve 100 according to another embodiment of the present invention is different from the water supply valve 100 described with reference to FIGS. 1 to 8 in that the first opening and closing part 200 and the second opening and closing part 300 are separately formed, .

Therefore, the different configurations will be mainly described, and the remaining configurations can be replaced with those described with reference to Figs. 1 to 8 above.

The first opening and closing part 200 and the second opening and closing part 300 of the water supply valve 100 according to another embodiment of the present invention may be separately formed as shown in FIG. The first flow path 210 of the first opening and closing part 200 and the second flow path 310 of the second opening and closing part 300 may be connected by a connection pipe TC as shown in FIG.

For this purpose, the first flow path 210 may be formed in the first valve body BV1. The components of the first opening and closing part 200 including the first plunger 220 and the first solenoid 230 may be provided in the first driving body BD1 connected to the first valve body BV1.

The second flow path 310 is formed in the second valve body BV2 which is formed separately from the first valve body BV1 and the second opening and closing part 300 including the second plunger 320 and the second solenoid 330 May be provided on the second driving body BD2 connected to the second valve body BV2.

9, the first outlet hole 214 of the first flow path 210 is not integrated with the second inlet hole 312 of the second flow path 310 but is connected to the first valve body BV1, And the second valve body BV2, and may be connected by a connection tube TC.

As described above, by using the water supply valve according to the present invention, heat generated from the water supply valve can be reduced, and thermal deformation does not occur in the water supply valve, so that breakage or malfunction of the water supply valve can be prevented. The second opening and closing part for closing the second flow path connected to the first flow path when the one opening and closing part malfunction can prevent the second flow path from being closed at the time of normal operation of the one opening and closing part.

The above-described water supply valve can be applied to a limited number of configurations of the above-described embodiments, but the embodiments can be configured by selectively or in combination of all or part of the embodiments so that various modifications can be made.

100: water supply valve 200: first opening / closing part
210: first flow path 211: first opening and closing hole
212: first intake hole 213: first plunger insertion hole
214: first water outlet hole 220: first plunger
230: first solenoid 240: first elastic member
250: first bobbin member 251: first moving hole
260: first core member 270: first yoke member
300: second opening and closing part 310:
311: second open / close hole 312: second take-in hole
313: second plunger insertion hole 314: second outlet hole
320: second plunger 330: second solenoid
340: magnetic force generating member 350: second elastic member
360: second bobbin member 361: second moving hole
370: second core member 380: second yoke member
BV: valve body BV1: first valve body
BV2: second valve body BD1: first drive body
IS1: first insertion hole IS2: second insertion hole
BD2: second driving body O: sealing member
V1: Starting voltage V2: Holding voltage
V3: driving voltage CL: closing member
AS: coupling member TC: coupling tube

Claims (20)

A first opening and closing unit including a first plunger for opening and closing a first flow path through which water flows, and a first solenoid for moving the first plunger; And
A second opening / closing part including a second plunger for closing the second flow path communicating with the first flow path only when the first opening and closing part fails, and a second solenoid for moving the second plunger; / RTI >
An electromagnetic force acting on the first plunger in the first solenoid and an electromagnetic force acting on the first plunger to move the first plunger in the open position to move the first plunger from the closed position closing the first flow path to the open position, 1 Water supply valve for varying the magnitude of the electromagnetic force acting on the plunger. The method as claimed in claim 1, further comprising: comparing a starting voltage applied to the first solenoid when the first plunger is moved from the closed position to the open position and a holding voltage applied to the first solenoid when the first plunger is held in the open position Water valve. The water supply valve according to claim 1, wherein the holding voltage is made smaller than the starting voltage. The water supply valve according to claim 1, wherein the first plunger is elastically supported by a first elastic member. The apparatus according to claim 1, wherein the second opening and closing part further includes a magnetic force generating member that acts on the second plunger, which is moved from a closed position to close the second flow path to an open position, Water supply valve. The water supply valve according to claim 5, wherein the magnetic force generating member is a permanent magnet. The water supply valve according to claim 5, wherein the second solenoid periodically applies an electromagnetic force to the second plunger after the second plunger is moved to the open position. The water supply valve according to claim 7, wherein a drive voltage is periodically applied to the second solenoid after applying a drive voltage to the second solenoid so that the second plunger is moved to the open position. The water supply valve according to claim 1, wherein the second plunger is elastically supported by a second elastic member. The water supply valve according to claim 1, wherein the first opening and closing part and the second opening and closing part are integrally formed. 11. The apparatus of claim 10, wherein the first flow path and the second flow path are formed in one valve body,
Wherein the first plunger and the first solenoid are provided in a first driving body connected to the valve body,
Wherein the second plunger and the second solenoid are provided in a second driving body connected to the valve body. The water supply valve according to claim 1, wherein the first opening and closing part and the second opening and closing part are separately formed, and the first flow path and the second flow path are connected by a connection pipe. 13. The apparatus of claim 12, wherein the first flow path is formed in a first valve body, the first plunger and a first solenoid are provided in a first drive body connected to the first valve body,
Wherein the second flow path is formed in the second valve body and the second plunger and the second solenoid are provided in the second drive body connected to the second valve body. [14] The apparatus of claim 11 or 13, wherein the first driving body is provided with a first insertion hole,
Wherein the first insertion hole is provided with the first solenoid on its outer periphery and a first bobbin member having a first movement hole formed therein to movably accommodate the first plunger. 14. The apparatus of claim 11 or 13, wherein a second insertion hole is formed in the second driving body,
Wherein the second insertion hole is provided with the second solenoid on the outer periphery and a second bobbin member having a second movement hole formed therein so that the second plunger is movable. 15. The water supply valve according to claim 14, wherein the first moving hole is provided with a first core member to which a first elastic member for elastically supporting the first plunger is connected. 16. The apparatus according to claim 15, wherein a second elastic member for elastically supporting the second plunger is connected to the second moving hole, and a magnetic force acting on the second plunger so as to maintain an open position where the second plunger opens the second flow path And a second core member provided with a generating member. [17] The method of claim 16, wherein one side of the first yoke member is connected to one side of the first driving body so as to contact the first core member,
And the other side of the first yoke member is connected to the other surface of the first driving body. [17] The apparatus of claim 17, wherein one side of the second yoke member is connected to one side of the second driving body so as to contact the second core member,
And the other side of the second yoke member is connected to the other surface of the second driving body. The apparatus according to claim 1, wherein the first flow path includes a first opening and closing hole that is opened and closed by the first plunger,
And the second flow path includes a second open / close hole that is opened and closed by the second plunger.

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