KR102152861B1 - Water supply valve - Google Patents

Abstract

Start the water supply valve.
A water supply valve according to an embodiment of the present invention includes a first opening and closing part 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 which closes the second flow path communicated with the first flow path only when the first opening/closing part fails, and a second solenoid for moving the second plunger. It includes, in order to move the first plunger from a closed position to close the first passage to an open position to open, the electromagnetic force acting on the first plunger from the first solenoid and maintaining the first plunger in the open position In order to do so, the magnitude of the electromagnetic force acting on the first plunger may be different.

Description

Water supply valve {WATER SUPPLY VALVE}

The present invention relates to a water supply valve, and more particularly, to a water supply valve in which heat generation of a solenoid for moving a plunger that opens and closes a flow path through which water flows is reduced so that thermal deformation does not occur.

The water supply valve is a device that supplies water to a water treatment device such as a water purifier. To this end, the water supply valve is connected to a water supply source such as water and a device such as a water treatment device.

In addition, a flow path through which water flows is formed in the water supply valve, and by opening and closing the flow path, water from a water supply source is supplied to a water treatment device or the like, or water to a water treatment device is stopped.

In order to open and close the flow path, the water supply valve is provided with a plunger and a solenoid that moves the plunger.

Then, when electricity is applied to the solenoid, the plunger moves between the closed position for closing the flow path and the open position for opening the flow path to open and close the flow path.

In the water supply valve, the flow path 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.

In addition, thermal deformation occurs in the water supply valve, in particular, the solenoid, the plunger, and the bobbin member made of a synthetic resin.

In this way, when thermal deformation occurs in the water supply valve, the water supply valve is damaged and a malfunction occurs.

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

On the other hand, in addition to the main plunger and solenoid that continuously open and close the flow path, the water supply valve may be provided with an auxiliary plunger and solenoid that open the flow path when the main plunger and solenoid operate normally, but close the flow path when the main plunger and solenoid fail. .

As described above, the auxiliary plunger must open the flow path when the main plunger and the solenoid operate normally, but can be moved by an external shock to close the flow path even when the main plunger and the solenoid operate normally.

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

The present invention has been made by recognizing at least one of the demands or problems occurring in the conventional water supply valve as described above.

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

Another aspect of the object of the present invention is to prevent damage or malfunction of the water supply valve by preventing thermal deformation from occurring in the water supply valve.

Another aspect of the object of the present invention is to prevent the second opening/closing part closing the second flow path connected to the first flow path when the first opening/closing part malfunctions to close the second flow path during normal operation of the first opening/closing part.

A water supply valve related 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 and closing portion 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 which closes the second flow path communicated with the first flow path only when the first opening/closing part fails, and a second solenoid for moving the second plunger. It includes, in order to move the first plunger from a closed position to close the first passage to an open position to open, the electromagnetic force acting on the first plunger from the first solenoid and maintaining the first plunger in the open position In order to do so, the magnitude of the electromagnetic force acting on the first plunger may be different.

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

In addition, the sustain voltage may be made smaller than the starting voltage.

In addition, the first plunger may be elastically supported by the first elastic member.

In addition, the second opening/closing part may further include a magnetic force generating member that applies magnetic force so that the second plunger moved from a closed position closing the second passage to an open position to open it continues to maintain the open position.

In addition, 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.

In addition, after applying a driving voltage to the second solenoid so that the second plunger is moved to the open position, a driving voltage may be periodically applied to the second solenoid.

In addition, the second plunger may be elastically supported by the second elastic member.

In addition, the first opening and closing portions and the second opening and closing portions may be integrally formed.

In addition, the first flow passage and the second flow passage are formed in one valve body, 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 May be provided on a second driving body connected to the valve body.

In addition, the first opening and closing portion and the second opening and closing portions are formed separately, and the first passage and the second passage may be connected by a connecting pipe.

In addition, the first flow path is formed in a first valve body, the first plunger and the first solenoid are provided in a first driving body connected to the first valve body, and the second flow path is formed in a second valve body. The second plunger and the second solenoid may be provided on a second driving body connected to the second valve body.

In addition, a first insertion hole is formed in the first driving body, and the first solenoid is provided on an outer periphery of the first insertion hole, and a first movable hole is formed therein to allow the first plunger to move. A first bobbin member may be provided.

In addition, a second insertion hole is formed in the second driving body, and the second solenoid is provided on an outer periphery of the second insertion hole, and a second movable hole is formed therein so that the second plunger is movable. Two bobbin members may be provided.

In addition, a first core member to which a first elastic member for elastically supporting the first plunger is connected may be provided in the first moving hole.

In addition, a second elastic member for elastically supporting the second plunger is connected to the second moving hole, and a magnetic force generating member for acting magnetic force is provided so that the second plunger maintains an open position in which the second passage is opened. The second core member may be provided.

In addition, one side of the first yoke member may be connected to one surface of the first driving body to contact the first core member, and the other side of the first yoke member may be connected to the other surface of the first driving body.

In addition, one side of the second yoke member may be connected to one surface 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 surface of the second driving body.

In addition, the first flow passage may include a first opening and closing hole opened and closed by the first plunger, and the second flow passage may include a second opening and closing hole opened and closed by the second plunger.

As described above, according to the exemplary embodiment of the present invention, when the first flow path is opened by the first plunger and when the first flow path is maintained, the magnitude of the electromagnetic force acting on the first plunger is different from the first solenoid. The heat generated can be reduced.

In addition, according to the exemplary embodiment of the present invention, since thermal deformation does not occur in the water supply valve, damage or malfunction of the water supply valve may not occur.

Further, according to an embodiment of the present invention, even after the second plunger of the second opening and closing portion closing the second flow passage connected to the first flow passage when the first opening and closing portion malfunctions, the second solenoid is Electromagnetic force is periodically applied to the plunger so that the second opening and closing portion does not close the second flow path during normal operation of the first opening and closing portion.

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' of FIG. 1;
4 to 6 are cross-sectional views as in FIG. 3 showing the operation of the water supply valve according to an embodiment of the present invention.
7 is a graph showing a voltage applied to a first solenoid included in a first opening/closing part of a water supply valve according to an embodiment of the present invention when switching to the state shown in FIG. 5.
8 is a graph showing a voltage applied to a second solenoid included in a second opening/closing part of a water supply valve according to an embodiment of the present invention at the time of conversion to the state shown in FIG. 4 and after the conversion.
9 is a cross-sectional view of a water supply valve according to another embodiment of the present invention.

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

Hereinafter, the described embodiments will be described on the basis of embodiments most suitable for understanding the technical features of the present invention, and the technical features of the present invention are not limited by the described embodiments, but the following, It is to illustrate that the present invention can be implemented as in the described embodiments. Accordingly, the present invention can be variously modified within the technical scope of the present invention through the embodiments described below, and such modified embodiments will fall within the technical scope of the present invention. And, with reference to the reference numerals in the accompanying drawings to aid in the understanding of the embodiments to be described below, related elements among the elements that perform the same function in each embodiment are indicated by numbers on the same or extension lines.

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 cross-sectional view taken along line A-A' in FIG. .

In addition, Figures 4 to 6 are cross-sectional views as in Figure 3 showing the operation of the water supply valve according to an embodiment of the present invention.

And, Figure 7 is a graph showing the voltage applied to the first solenoid included in the first opening and closing of the water supply valve according to an embodiment of the present invention when switching to the state shown in Figure 5, Figure 8 is shown in Figure 4 It is a graph showing the voltage applied to the second solenoid included in the second opening/closing part of the water supply valve according to an embodiment of the present invention at the time of and after the conversion to the switched state.

The water supply valve 100 according to an embodiment of the present invention may include a first opening/closing part 200 and a second opening/closing part 300 as shown in FIGS. 1 to 3. The first opening/closing part 200 and the second opening/closing part 300 may be integrally formed as shown.

However, as described later and shown in FIG. 9, the first opening/closing part 200 and the second opening/closing part 300 may be formed separately.

1st opening and closing part

The first opening/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. 4 and 5. In addition, the first solenoid 230 moves the first plunger 220.

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

Accordingly, the first plunger 220 may move by the electromagnetic force generated by the first solenoid 230. And, due to the electromagnetic force generated from the first solenoid 230, the first plunger 220 closes the first flow path 210 as shown in FIG. 4 and a closed position as shown in FIG. The first flow path 210 is opened and closed by moving between the open positions for opening the flow path 210.

The first passage 210 may be formed in one valve body BV together with the second passage 310 to be described later, as shown in FIG. 3. In addition, the first flow path 210 is connected to a water supply source (not shown) such as water through a connection pipe. Accordingly, water from a water supply source may flow into the first flow path 210.

The first passage 210 may include a first opening and closing hole 211 opened and closed by the first plunger 220. As shown in FIG. 4, when the first opening and closing hole 211 is closed by the movement of the first plunger 220 to the closed position, the water flowing into the first flow path 210 is transferred to the first flow path 210. It does not flow into the second flow path 310 to be described later of the connected second opening and closing part 300. And, as shown in Fig. 5, when the first opening and closing hole 211 is opened by the movement of the first plunger 220 to the open position, the water flowing into the first passage 210 is transferred to the second passage 220 ) To flow.

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

As shown in FIG. 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 above-described first opening and closing hole 211. It may contain more.

The first receiving hole 212 is connected to a water supply source. Accordingly, water from the water supply source may flow into the first flow path 210 through the first inlet hole 212.

The first plunger insertion hole 213 is connected to the first opening and closing hole 211 and the first receiving hole 212. In addition, one end of the first plunger 220 may be inserted into the first plunger insertion hole 213.

Accordingly, 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 or as shown in FIG. The first opening and closing hole 211 may be opened.

The first outlet hole 214 is connected to the first opening and closing hole 211. When the first plunger 220 closes the first opening/closing hole 211 as shown in FIG. 4, water flowing into the first receiving hole 212 flows only to the first plunger insertion hole 213.

In addition, as shown in Fig. 5, when the first plunger 220 opens the first opening and closing hole 211, the water flowing into the first receiving hole 212 is transferred to the first plunger insertion hole 213 and the first It flows to the first outlet hole 214 through the opening and closing hole 211. In this way, the water flowing through the first outlet hole 214 flows into the second flow path 310 of the second opening and closing part 300.

Meanwhile, as shown in FIG. 3, a closing member CL may be inserted and closed in a portion of the first outlet hole 214 that is open to the outside.

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 driving body BD1 may be connected to the valve body BV by a coupling member AS, as shown. However, the configuration in which the first driving body BD1 is connected to the valve body BV is not particularly limited, and any known configuration such as being connected by fitting or the like may be used.

In addition, a sealing member such as an O-ring (O-ring) is provided at the connection part between the first driving body BD1 and the valve body BV so that water in the first flow path 210 does not leak to the outside through the connection part, as shown in FIG. ) 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. In addition, a first solenoid 230 is provided on the outer periphery of the first bobbin member 250.

A first moving hole 251 may be formed inside the first bobbin member 250. The first moving hole 251 of the first bobbin member 250 communicates with the first plunger insertion hole 213 of the first flow path 210 described above. Therefore, water flowing into the first plunger insertion hole 213 of the first flow path 210 also flows into the first moving hole 251 of the first bobbin member 250 through the first plunger insertion hole 213. .

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

The first moving hole 251 of the first bobbin member 250 may be provided with a first elastic member 240 to elastically support the first plunger 220 as illustrated in FIG. 3. In addition, a first core member 260 to which the first elastic member 240 is connected may be provided in the first moving hole 251.

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

One side of the first driving body BD1, that is, the upper surface, is connected to one side of the first yoke member 270 so as to be in contact with the aforementioned first core member 260, and the other surface of the first driving body BD1, that is, the lower surface. The other side of the first yoke member 270 may be connected thereto.

To this end, the first yoke member 270 may have a'C' shape in cross section as shown in FIG. 2. However, the shape of the first yoke member 270 is not particularly limited, and one side is connected to contact the first core member 260 on one side of the first driving body BD1, and the other side is the first driving body BD1. Any shape is possible as long as it can be connected to the other side of the.

With this configuration, the first solenoid 230 may easily generate an electromagnetic force of a desired size, so that the first plunger 220 may be easily moved.

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

On the other hand, in the water supply valve 100 according to an embodiment of the present invention, in order to move the first plunger 220 from the closed position to the open position, the electromagnetic force acting on the first plunger 220 from the first solenoid 230 and In order to keep the first plunger 220 in the open position, the magnitude of the electromagnetic force acting on the first plunger 220 may be different.

And, for this purpose, when the first plunger 220 is moved from the closed position to the open position, the starting voltage V1 applied to the first solenoid 230 and the first plunger 220 are maintained in the open position. The sustain voltage V2 applied to the solenoid 230 may be different.

In addition, as shown in FIG. 7, the sustain 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 hydraulic pressure according 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 a 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 a downward direction.

Therefore, it is possible to maintain the first plunger 220 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.

In addition, even if the first solenoid 230 does not exert an electromagnetic force on the first plunger 220, only the self weight of the first plunger 220 and the elastic force of the first elastic member 240 make the first plunger 220 first. It is possible to move the opening and closing hole 211 to a closed position to close.

Accordingly, when the first plunger 220 is held in the open position, the first solenoid (V2) applied to the first solenoid 230 is transferred from the closed position to the open position. Even if it is smaller than the starting voltage V1 applied to the 230, the first opening/closing hole 211 can be opened and closed by the first plunger 220.

In this way, if the voltage applied to the first solenoid 230 is different, heat generated from the first solenoid 230 may be reduced by the applied voltage.

Therefore, it is possible to prevent thermal deformation from occurring in the water supply valve 100 according to an embodiment of the present invention, for example, the first bobbin member 250 provided with the first solenoid 230, and the water supply valve ( 100) damage and malfunction can be prevented.

2nd opening and closing part

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 passage 310 communicating with the above-described first passage 210 only when the first opening/closing portion 200 fails, as shown in FIG. 6.

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

Accordingly, when the first opening/closing part 200 fails, it is possible to prevent water supply from being supplied through the water supply valve 100 according to an embodiment of the present invention.

In addition, the second solenoid 330 moves the second plunger 320.

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

Accordingly, the second plunger 320 may move by the electromagnetic force generated from the second solenoid 330. In addition, by the electromagnetic force generated from the second solenoid 330, the second plunger 320 is in a closed position to close the second flow path 310 as shown in FIG. 6 and as shown in FIGS. 4 and 5. The second passage 310 is opened and closed by moving between the open positions for opening the second passage 310.

In this way, the second passage 310 opened and closed by the second plunger 320 may be formed in one valve body BV together with the first passage 210 as shown in FIG. 3 and described above.

In addition, the second flow path 310 may include a second opening and closing hole 311 opened and closed by the second plunger 320. As shown in Fig. 6, when the second opening and closing hole 311 is closed by the movement of the second plunger 320 to the closed position, the water flowing into the second flow path 310 is transferred to the second flow path 310. It does not flow to a device such as a connected water treatment device (not shown).

And, as shown in Figs. 4 and 5, when the second opening and closing hole 311 is opened by the movement of the second plunger 320 to the open position, water flowing into the second flow path 310 is connected thereto. It flows to a device such as a water treatment device.

Meanwhile, a 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.

As shown in FIG. 3, the second passage 310 includes a second inlet hole 312, a second plunger insertion hole 313, and a second outlet hole 314 in addition to the above-described second opening and closing hole 311. It may contain more.

The second receiving hole 312 is connected to the first flow path 210. As shown in FIG. 3, the second inlet hole 312 may be integrated with the first outlet hole 214 of the first passage 210 and connected to the first passage 210.

Accordingly, as shown in FIG. 5, when the first opening and closing hole 211 of the first opening and closing portion 200 is opened, the water of the first passage 210 flows into the second inlet hole 312.

However, the configuration in which the second inlet hole 312 is connected to the first flow path 210 is not particularly limited, and if it can be connected to the first flow path 210, a separate connection hole formed in the valve body BV (not shown) Not), such as being connected to the first flow path 210, etc., any known configuration is possible.

The second plunger insertion hole 313 is connected to the second opening and closing hole 311 and the second receiving hole 312. In addition, one end of the second plunger 320 may be inserted into the second plunger insertion hole 313.

Accordingly, one end of the second plunger 320 is inserted into the second plunger insertion hole 313 and moved, thereby closing the second opening/closing hole 311 as shown in FIG. 6 or shown in FIGS. 4 and 5. As described above, the second opening and closing hole 311 may be opened.

The second outlet hole 314 is connected to the second opening and closing hole 311. Therefore, as shown in FIG. 6, in a state in which the first plunger 220 cannot close the first opening/closing hole 211 due to a failure of the first opening/closing part 200, the second plunger 320 is When the 311 is closed, water introduced into the second inlet hole 312 flows only to the second plunger insertion hole 313.

In addition, as shown in FIG. 5, when the second plunger 320 opens the second opening and closing hole 311, when the first plunger 220 opens the first opening and closing hole 211, the first passage The water flowing through 210 and flowing into the second inlet hole 312 flows into the second outlet hole 314 through the second opening and closing hole 311 through the second plunger insertion hole 313.

Then, the water flowing through the second outlet hole 314 flows to a device such as a water treatment plant connected to the second outlet hole 314.

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

However, the configuration in which the second driving body BD1 is connected to the valve body BV is not particularly limited, and any known configuration such as being connected by fitting or the like may be used.

In addition, as shown in FIG. 3, the connection part between the second driving body BD2 and the valve body BV is provided with a sealing member such as O-ring so that water in the second flow path 310 does not leak to the outside through the connection part. ) May be provided.

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

A second moving hole 261 may be formed inside 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. Accordingly, the water flowing into the second plunger insertion hole 313 of the second flow path 310 also flows into the first moving hole 361 of the second bobbin member 360 through the second plunger insertion hole 313. .

In the second moving hole 361 of the second bobbin member 360, a second plunger 320 is provided to be movable.

A second elastic member 350 may be provided in the second moving hole 261 of the second bobbin member 360 to elastically support the second plunger 320 as illustrated in FIG. 3. In addition, a second core member 370 to which the second elastic member 350 is connected may be provided in the second moving hole 361.

In addition, a sealing member O such as an O-ring may be provided in the second moving hole 361 between the second core member 370 and the second bobbin member 360. Accordingly, it is possible to prevent leakage of water introduced into the second moving hole 361 to the outside.

One side of the second driving body BD2, that is, the upper surface, is connected to one side of the second yoke member 380 so as to contact the second core member 370 described above, and the other surface of the second driving body BD2, that is, the lower surface. The other side of the second yoke member 380 may be connected to.

To this end, the second yoke member 380 may have a'C' shape in cross section as shown in FIG. 2. However, the shape of the second yoke member 380 is not particularly limited, and one side is connected to contact the second core member 370 on one side of the second driving body BD2, and the other side is the second driving body BD2. Any shape is possible as long as it can be connected to the other side of the.

With this configuration, the second solenoid 330 can easily generate an electromagnetic force of a desired size, 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 is possible as long as the second plunger 320 can be easily moved. .

Meanwhile, the second opening/closing part 300 may further include a magnetic force generating member 340. Magnetic force may be generated in the magnetic force generating member 340. Further, the second plunger 320 moved from the closed position of closing the second flow path 310 to the open position of opening by the magnetic force generated by the magnetic force generating member 340 may keep the open position.

Accordingly, even with a relatively small electromagnetic force generated by the second solenoid 330, the second plunger 320 can be moved from the closed position to the open position. In addition, after the second plunger 320 moves to the open position, even if the second solenoid 330 does not continuously apply the electromagnetic force to the second plunger 320, the magnetic force generated from the magnetic force generating member 340 The second plunger 320 may maintain the open position.

Further, the second plunger 320 may be moved from the open position to the closed position even with a relatively small electromagnetic force generated by the second solenoid 330. In addition, after the second plunger 320 moves to the closed position, even if the second solenoid 330 does not continuously apply an electromagnetic force to the second plunger 320, the self-weight of the second plunger 320 and the second elastic member The second plunger 320 may maintain the closed position by the elastic force of 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 material such as an electromagnet may be used as long as it is capable of generating magnetic force.

The magnetic force generating member 340 may be provided in the above-described second core member 370 as shown in FIG. 3. However, the position of the magnetic force generating member 340 is not particularly limited, and any position may be used as long as it is a position capable of applying a magnetic force to the second plunger 320 so that the second plunger 320 maintains an open position.

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

Accordingly, in a state in which the second plunger 320 is maintained in the open position by the magnetic force of the magnetic force generating member 340, the second plunger 320 is influenced by the magnetic force of the magnetic force generating member 340 by an external impact. Even if it moves to the closed position by moving to the position where it does not receive the second plunger 320, the second plunger 320 may move back to the open position by the driving voltage V3 periodically applied to the second solenoid 330.

Different Example

9 is a cross-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 portions 200 and the two opening and closing portions 300 are separately formed. There is.

Accordingly, the different configurations will be mainly described, and the remaining configurations may be replaced with those described with reference to FIGS. 1 to 8.

The first opening/closing part 200 and the second opening/closing part 300 of the water supply valve 100 according to another embodiment of the present invention may be formed separately as shown in FIG. 9. In addition, the first flow path 210 of the first opening/closing part 200 and the second flow path 310 of the second opening/closing part 300 may be connected by a connection pipe TC as shown.

To this end, the first flow path 210 may be formed in the first valve body BV1. In addition, components of the first opening/closing part 200 including the first plunger 220 and the first solenoid 230 may be provided on the first driving body BD1 connected to the first valve body BV1.

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

In addition, the first outlet hole 214 of the first passage 210 is not integrated with the second inlet hole 312 of the second passage 310 as shown in FIG. 9 and the first valve body BV1 And the second valve body (BV2) are formed separately, and may be connected by a connection pipe (TC).

As described above, when the water supply valve according to the present invention is used, heat generated from the water supply valve may be reduced, and the damage or malfunction of the water supply valve may not occur by preventing thermal deformation from occurring at the water supply valve. It is possible to prevent the second opening and closing portion closing the second flow passage connected to the first flow passage in case of malfunction of the first opening and closing portion from closing the second passage during normal operation of the first opening and closing portion.

The water supply valve described above is not limitedly applicable to the configuration of the above-described embodiment, but the embodiments may be configured by selectively combining all or part of each of the embodiments so that various modifications can be made.

100: water supply valve 200: first opening and closing
210: first passage 211: first opening and closing hole
212: first inlet hole 213: first plunger insertion hole
214: first 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: 2nd opening and closing part 310: 2nd euro
311: second opening and closing hole 312: second receiving 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: 2nd valve body BD1: 1st drive body
IS1: 1st insertion hole IS2: 2nd 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: connector

Claims (20)

A first opening and closing part 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 that closes a second flow path communicating with the first flow path only when the first opening/closing part fails, and a second solenoid for moving the second plunger; Including,
In order to move the first plunger from the closed position to close the first flow path to the open position to open, the electromagnetic force acting on the first plunger from the first solenoid and the first to maintain the first plunger in the open position. 1 Make the magnitude of the electromagnetic force acting on the plunger different,
The second opening/closing part further includes a magnetic force generating member configured to apply a magnetic force so that the second plunger moved from a closed position closing the second passage to an open position to be opened continues to maintain the open position,
A water supply valve configured to periodically apply electromagnetic force to the second plunger in the second solenoid after the second plunger is moved to the open position. The method of claim 1, wherein a starting voltage applied to the first solenoid when moving the first plunger from a closed position to an open position and a holding voltage applied to the first solenoid when maintaining the first plunger in the open position The water supply valve that makes the difference. The water supply valve according to claim 2, wherein the sustain voltage is lower than the starting voltage. The water supply valve according to claim 1, wherein the first plunger is elastically supported by a first elastic member. delete The water supply valve according to claim 1, wherein the magnetic force generating member is a permanent magnet. delete The water supply valve according to claim 1, wherein a driving voltage is periodically applied to the second solenoid after applying a driving voltage to the second solenoid so that the second plunger is moved to an 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 portions and the second opening and closing portions are integrally formed. The method of claim 10, wherein the first flow passage and the second flow passage are formed in one valve body,
The first plunger and the first solenoid are provided on a first driving body connected to the valve body,
The second plunger and the second solenoid are water supply valves provided on a second driving body connected to the valve body. The water supply valve according to claim 1, wherein the first opening and closing portions and the second opening and closing portions are formed separately, and the first and second passages are connected by a connection pipe. The method of claim 12, wherein the first flow path is formed in a first valve body, and the first plunger and the first solenoid are provided in a first driving body connected to the first valve body,
The second flow path is formed in a second valve body, and the second plunger and the second solenoid are provided in a second driving body connected to the second valve body. The method of claim 11 or 13, wherein the first driving body is formed with a first insertion hole,
In the first insertion hole, the first solenoid is provided on an outer periphery, and a first bobbin member having a first moving hole in which the first plunger is movably provided is provided. The method of claim 11 or 13, wherein a second insertion hole is formed in the second driving body,
In the second insertion hole, the second solenoid is provided on the outer periphery, and a second bobbin member having a second movable hole in which the second plunger is movably provided is provided. The water supply valve according to claim 14, wherein a first core member is provided in the first moving hole to which a first elastic member for elastically supporting the first plunger is connected. 16. The magnetic force of claim 15, wherein a second elastic member for elastically supporting the second plunger is connected to the second moving hole, and the second plunger applies a magnetic force to maintain an open position to open the second passage. Water supply valve provided with a second core member provided with a generating member. The method of claim 16, wherein one side of the first yoke member is connected to one surface of the first driving body so as to contact the first core member,
A water supply valve to which the other side of the first yoke member is connected to the other surface of the first driving body. 18. The method of claim 17, wherein one side of the second yoke member is connected to one surface of the second driving body so as to contact the second core member,
A water supply valve to which the other side of the second yoke member is connected to the other surface of the second driving body. The method of claim 1, wherein the first flow path comprises a first opening and closing hole opened and closed by the first plunger,
The second flow path is a water supply valve including a second opening and closing hole opened and closed by the second plunger.

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