JP3687734B2 - Manual and electromagnetic water supply valve device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, a diaphragm valve is installed in a water supply piping line such as tap water (hereinafter referred to as a line), and the diaphragm valve is manually opened and closed to open and close the pilot orifice of the diaphragm valve. The present invention relates to a pilot valve type water supply valve device that opens and closes a main valve seat in conjunction with each other.
[0002]
[Prior art]
Conventionally, for example, a normally closed pilot valve type electromagnetic water supply valve (hereinafter referred to as a conventional valve) mounted on an electric appliance for home use (for example, a fully automatic washing machine, a dishwasher, a local washing device, etc.). A soft diaphragm so that the main valve seat is closed to a valve body in which an inflow port, an inflow conduit, an inflow chamber, a main valve seat, an outflow conduit, and an outflow port are integrally molded with a synthetic resin molding member (for example, polypropylene resin). A valve (valve body) is installed, and a synthetic resin molded member (for example, nylon resin) guide case (the inside is referred to as a back pressure chamber) is pressed so as to press the liquid-tight packing portion of the diaphragm valve against the valve body. A hard magnetic member (for example, a flexible pilot valve (valve element) of an elastic member (for example, silicon rubber) is fixed so that the pilot orifice of the diaphragm valve is closed on the inner periphery of the guide case. Tensile steel rod) and coil spring (for example, stainless steel wire) that constantly urges the plunger are housed, and copper wire (for example, enameled wire) is cylindrical on the outer periphery of the guide case It is known that a solenoid (coil) that is wound around a bobbin (for example, nylon resin) and connected to a terminal piece (for example, Faston terminal # 250) or a lead wire (electric wire) is installed.
[0003]
In the outer periphery of the inflow port, for example, the screw connection and the diameter of the water supply hose and the like are standardized in the industry, such as a thread joint nominal PT3 / 4 and a diameter nominal 20, for example, 10 mountains).
The inner peripheral part of the inlet (the pressure of the inflowing water is referred to as the primary pressure or the high pressure side) includes a metal filter of about 60 mesh for preventing foreign matter (eg insects, sand, iron scraps, etc.) from mixing, In many cases, a flow rate adjusting component or the like is incorporated so that the flow rate is substantially constant regardless of the (dynamic water pressure of the line).
[0004]
Although there is an exception, in the case of a flow rate adjustment component when the predetermined water flow rate is less than 10 L / min, as disclosed in, for example, Japanese Utility Model Publication Nos. 59-28796 and 62-18787, upstream Synthetic resin molding member (for example, polyphenylene oxide resin, polyphenylene ether resin, polyacetal resin) on the side and a soft annular disc (hereinafter referred to as flow controller) of an elastic member (for example, nitrile rubber) on the downstream side. It is common to install a flow rate adjusting component having a conical inclined concave shape in which a chamfer is formed in a through hole.
When the primary pressure is supplied to the flow rate adjusting component at a low water pressure (for example, 0.05 to 0.10 MPa [megapascal] or less), the hard cup only presses the flow controller slightly due to the water pressure. , The flowing water passage provided in the hard cup (for example, V groove, stepped groove, etc. in the case of a circumferential arrangement, through hole, etc. in the case of a substantially central portion) is secured as it is, Water below the water flow rate passes.
When the primary pressure is supplied at a medium water pressure (for example, about 0.10 to 0.50 MPa), the hard cup presses the flow controller more strongly than the low water pressure due to the water pressure, and is provided on the hard cup. In addition, the flow control bite into the flowing water passage, the flowing water passage is narrowed, and a predetermined amount of water or less water passes therethrough.
Furthermore, when the primary pressure is supplied at a high water pressure (for example, 0.50 to 0.75 MPa or more), the hard cup almost bites into the flow control by the water pressure, and the flowing water passage is almost blocked, A predetermined amount of water or less will pass through.
[0005]
Although there are exceptions, in the flow rate adjustment component when the predetermined water flow rate is about 10 L / min to 35 L / min, for example, as disclosed in FIGS. 6 and 7 of Japanese Utility Model Laid-Open No. 2-102744, etc. The conical slanted concave shape is formed so that the through hole (also called an orifice, which is a flowing water pipe) at the center of both end surfaces is bent by a change in water pressure or fluid flow, and the cross sectional area of the flowing water pipe is easily changed. A soft annular disk (hereinafter referred to as a flow sheet) of an elastic member (for example, nitrile rubber) molded with a hard color (backflow) of a synthetic resin molded member (for example, polypropylene resin or polyacetal resin), which may be omitted. It is a common practice to install a flow control component composed of:
As for the flow rate adjusting component, the flow sheet is bent and deformed by a change in the water pressure or the flow rate of the fluid, and the water flow conduit that is the substantially central through hole is narrowed, so that water having a predetermined water flow rate or less passes therethrough. It will be.
[0006]
In a conventional valve, as described above, a flow rate adjusting component is generally provided at the inlet, but for example, disclosed in Japanese Utility Model Laid-Open No. 56-136665, registered utility model No. 3021488, and the like. As described above, a flow rate adjusting component may be disposed on the outlet side.
[0007]
The inflow conduit is a passage that guides the water at the inflow port to the inflow chamber. However, in order to facilitate cavitation in the inflow conduit (to ensure water hammer pressure that causes the diaphragm valve to float from the main valve seat). In addition, the pipe line is often lengthened. In addition, since the water flow becomes turbulent by the flow rate adjusting component, it is necessary to rectify once in order to make cavitation more likely to occur. Often).
[0008]
The inflow chamber is a chamber surrounded by the inner wall of the valve body and the outer periphery of the outflow pipe, and has a function of propagating water pressure to the diaphragm valve. Normally, cavitation generated in the inflow conduit is lost in the inflow chamber.
[0009]
The main valve seat is an end surface portion of the outflow conduit. In order to improve the water stop performance, the diaphragm valve has a shape that makes it easy to bite.
[0010]
The outlet is the outlet of the outflow line. On the outer periphery of the outlet, there is an annular projection (rib) or the like for preventing the water supply hose from coming off.
[0011]
The diaphragm valve is provided on one surface of a hard disk of a synthetic resin molding member (for example, polyacetal resin), for example, in at least one small hole and one inner hole provided in a soft diaphragm of an elastic member (for example, silicon rubber). Further, at least one small protrusion and one middle protrusion are connected by insertion (for example, as disclosed in Registered Utility Model No. 3010806, etc., a plurality of small holes and small protrusions are provided for insertion and connection. The small protrusion protrudes from the outer peripheral portion of the diaphragm valve, and both side orifices (small holes and bleed holes) that pass through the inflow chamber and the back pressure chamber (inside the guide case) are provided. The central projection of the diaphragm valve protrudes, and a pilot orifice (medium hole) penetrating the back pressure chamber and the back pressure chamber outlet is provided. There.
When the diaphragm valve is installed in the valve body so as to close the main valve seat, the side orifice is located at the outlet of the inflow line. This is because the cavitation generated in the inflow pipe is compressed extremely rapidly in the inflow chamber and disappears, causing a rapid pressure rise (water hammer pressure), and the diaphragm valve floats from the main valve seat. This is because it is presumed that this is the driving force that causes the water in the inflow chamber to flow into the back pressure chamber from the side orifice due to the pressure difference (= water hammer pressure−back pressure chamber pressure).
[0012]
When a current is passed through the solenoid (normally, an AC voltage of 100 V is applied to excite the solenoid), the plunger is attracted to the center of the guide case installed inside the solenoid, and the pilot is -The pilot valve that had closed the orifice is released. Then, the water in the inflow chamber flows into the back pressure chamber from the side orifice, passes through the pilot orifice and the back pressure chamber outlet, and flows out to the outflow pipe and the outlet. When this passage is opened, the diaphragm valve slightly floats from the main valve seat due to the decrease in the pressure of the water in the back pressure chamber and the pressure of the water in the inflow chamber. Since the water flowing into the back pressure chamber from the side orifice contracts at one end at the side orifice, the pressure decreases and cavitation occurs. The water in the back pressure chamber has a sudden pressure increase (water hammer pressure) due to the disappearance of cavitation, and constantly presses the diaphragm valve floating from the main valve seat, while the outflow pipe, the flow It is estimated that it is flowing out to the exit. Since most of the water in the inflow chamber flows out to the main valve seat, the outflow pipe, and the outflow port, the hydrostatic pressure water in the line is lowered to the dynamic water pressure and becomes a flowing water state. The flow rate adjusting component incorporated in the inlet causes the water to shrink once, so that the pressure drops, cavitation occurs in the inflow conduit, disappears in the inflow chamber, and a sudden pressure rise (water It is presumed that the diaphragm valve is floated from the main valve seat. In addition, the pressure wave generated due to the sudden pressure rise is not propagated to the line side (or the amount of propagation is small) because the water flow flows out from the inflow port through the flow path of the outflow port. ). Therefore, during the valve opening operation of the conventional valve, the hydraulic pressure of the line (which decreases when the flow rate is high) is stable.
For reference, when the flow rate adjustment component is not installed, the pressure loss (= primary pressure-secondary pressure) of the conventional valve at the dynamic water pressure in the line is 0.01 MPa to 0.02 MPa, so cavitation disappears. After that, it can be seen that the pressure almost recovered to the primary pressure.
[0013]
Next, when the current to the solenoid is stopped (usually, the AC 100V voltage is cut off and demagnetized), the plunger is restored to the normal position by the coil spring, and the pilot valve closes the pilot orifice. To do. Then, the water flowing into the back pressure chamber from the side orifice loses its place, but in the back pressure chamber as described above, a sudden pressure increase (water hammer pressure) occurs due to the disappearance of cavitation. Therefore, the diaphragm valve floating from the main valve seat is pressed against the main valve seat. Then, the main valve seat is suddenly closed by the diaphragm valve to stop water, and the water in the inflow chamber cannot flow into the back pressure chamber from the side orifice, and the valve closing operation of the conventional valve is completed. To do.
[0014]
[Problems to be solved by the invention]
However, since the conventional valve mounted on household electrical equipment is naturally driven by electricity (electromagnetic), for example, there is a problem that the on-off valve operation (water supply and water stop) cannot be performed manually when no power is applied due to a power failure or the like. There is a point.
[0015]
The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a pilot valve system that enables manual on-off valve operation (water supply and water stoppage). A manual water supply valve device is to be provided.
[0016]
[Means for Solving the Problems]
In order to achieve the above object, a pilot valve type water supply valve device according to the present invention includes an inflow port through which water flows, an inflow conduit, an inflow chamber for propagating water pressure to a diaphragm valve, A diaphragm valve is installed in the main valve seat, which is provided at the approximate center and the end of the outflow pipe, and the valve body that integrally forms the outflow pipe and the outflow port from which water flows out, so as to close the main valve seat. The pilot valve is fixed so that the pilot orifice of the diaphragm valve is closed on the inner periphery of the guide case so as to press the liquid-tight packing portion of the diaphragm valve against the valve body. A plunger provided with a magnet (A), and a coil spring that constantly urges and urges the plunger, and a movable member provided with a magnet (B) is installed on the outer peripheral upper surface of the guide case. Configured pilot In this type of water supply valve device, when the movable member is manually displaced, the magnet (B) contacts and separates [the magnet (B) contacts and separates from the plunger axial direction (sliding direction) to the guide case]. The magnet (A) in the case slides (suction / repulsion operation and recovery operation), and the pilot valve connected to the plunger opens and closes the pilot orifice of the diaphragm valve, thereby linking the diaphragm valve to the main valve. The seat is opened and closed.
[0017]
Alternatively, an inflow port through which water flows, an inflow conduit, an inflow chamber for propagating water pressure to the diaphragm valve, and a main valve seat that is provided at an approximately center of the inflow chamber and is an end portion of the outflow conduit, A diaphragm valve is installed in a valve body integrally formed with an outflow pipe and an outlet through which water flows out so as to close the main valve seat, and the liquid-tight packing portion of the diaphragm valve is pressed against the valve body. A plunger that is fixed to the pilot valve and provided with a magnet (A) so that the pilot orifice of the diaphragm valve is closed on the inner periphery of the guide case, and the plunger is constantly impacted. The energized coil spring is accommodated, a solenoid (coil) is installed on the outer periphery of the guide case , and the magnet (B) is provided so that the magnet (B) comes to the outer peripheral upper surface of the guide case . established the movable member, In the water supply valve assembly of the pilot valve system which is configured by installing a coil spring which always resiliently urging the valve body and the movable member, when the manually displacing the movable member against Hanaredo of the magnet (B) [ The magnet (B) is moved toward and away from the guide case from the axial direction (sliding direction) of the plunger. The magnet (A) in the guide case slides (suction / repulsion operation and recovery operation) and is connected to the plunger. By opening and closing the pilot orifice of the diaphragm valve with the pilot valve thus formed, the main valve seat is opened and closed in conjunction with the diaphragm valve.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the invention will be described with reference to the drawings.
FIG. 1 shows a single-type normally closed pilot valve type manual water supply valve device 10 (hereinafter, this device 10) according to an embodiment of the present invention when the movable member 50 is stopped at the origin (recovery) position. It is a front longitudinal cross-sectional view. FIG. 2 is a front longitudinal sectional view of the apparatus 10 when the movable member 50 is stopped at the maximum displacement position.
In the present apparatus 10, an inflow port 11 through which water flows in, an inflow conduit 12, an inflow chamber 13 for propagating water pressure to the diaphragm valve 30, an outflow conduit 14, and an outflow pipe provided at substantially the center of the inflow chamber 13. The main valve seat 15 which is the end of the passage 14 and the valve body 17 (which may be made of synthetic resin or brass) integrally formed with the outlet 16 from which water flows out are closed to the diaphragm so as to close the main valve seat 15. A valve 30 is installed, and the guide case 40 is pressed against the valve body 17 so as to press the liquid-tight packing portion 33 of the diaphragm valve 30, and the pilot orifice of the diaphragm valve 30 is disposed on the inner periphery of the guide case 40. A plunger provided with a pilot valve 41 and a magnet (A) 49 (a rare earth magnet is preferable. For prevention of rust, a plunger lid body 48 is preferably used for waterproofing) so that 31 is closed. 2 and a coil spring 43 that constantly urges and urges the plunger 42, and a magnet (B) 51 (a rare earth magnet is good) is provided on the outer peripheral upper surface 39 of the guide case 40. A member 50 (for example, a key top, a push button of a power switch) and a coil spring 52 that constantly urges and urges the movable member 50 are installed.
[0019]
As shown in FIG. 1, when the movable member 50 is stopped at the origin (recovery) position, the pilot orifice 41 of the diaphragm valve 30 is connected to the plunger 42 by the elastic force of the coil spring 43. The diaphragm valve 30 also closes the main valve seat 15.
[0020]
As shown in FIG. 2, when the magnet (B) 51 comes close to the guide case 40 from the axial direction (sliding direction) of the plunger 42 and the movable member 50 stops at the maximum displacement position, the magnet (B) ) Due to the proximity of 51, the magnet (A) 49 in the guide case 40 slides with an attractive force, and the pilot valve 41 connected to the plunger 42 opens the pilot orifice 31 of the diaphragm valve 30. In conjunction with this, the diaphragm valve 30 also opens the main valve seat 15.
As described above, the open / close valve operation (water supply and water stoppage) can be performed manually or the like even in a non-energized state due to a power failure or the like.
[0021]
FIG. 3 shows a single-handed normally closed pilot valve type manual and electromagnetic water supply valve device 60 (hereinafter, this device 60) according to another embodiment of the present invention when the movable member 53 is stopped at the origin (recovery) position. FIG.
In this apparatus 60, an inflow port 11 through which water flows in, an inflow conduit 12, an inflow chamber 13 for propagating the pressure of water to the diaphragm valve 30, an outflow conduit 14, and an outflow pipe provided substantially at the center of the inflow chamber 13. The main valve seat 15 which is the end of the passage 14 and the valve body 17 (which may be made of synthetic resin or brass) integrally formed with the outlet 16 from which water flows out are closed to the diaphragm so as to close the main valve seat 15. A valve 30 is installed, and the guide case 40 is pressed against the valve body 17 so as to press the liquid-tight packing portion 33 of the diaphragm valve 30, and the pilot orifice of the diaphragm valve 30 is disposed on the inner periphery of the guide case 40. A plunger 42 fixed with a pilot valve 41 and provided with a magnet (A) 49 so as to be closed, and a coil spring 43 that constantly urges and urges the plunger 42. A solenoid (coil) 47 in which a copper wire 44 called a magnet wire is wound around a cylindrical bobbin 45 and connected to a terminal piece 46 is installed on the outer periphery of the case 40. movable member 53 provided with the magnet (B) 51 to the magnet (B) 51 come (shape, for example, the key-top, push button of the power switch) is installed, and a valve body 17 and the movable member 53 it is obtained by installing a coil spring 54 you always resilient biasing.
[0022]
In this device 60, the same operation as that of a normal electromagnetic water supply valve device is possible by passing a current through the solenoid 47 (usually applying and exciting an AC voltage of 100V). Further, for example, even when there is no energization due to a power failure or the like , the on- off valve operation (water supply and water stoppage) can be performed manually or the like by manual displacement of the movable member 53 .
[0023]
Although various combinations and the like have been described for the preferred embodiments of the present invention, the present invention is not limited to the embodiments described above, and many combinations and modifications are possible without departing from the spirit of the invention. Of course, etc. can be given.
The pilot valve type manual water supply valve device (or manual and electromagnetic water supply valve device) of the present invention is a normally closed type, but may be a normally open type. Further, a self-holding (latch) type combining a magnet (C) and a solenoid (coil) may be used, and a movable member may be used for recovery. In this case, the repulsive force between the magnet (C) and the magnet (B) may be used.
Further, a direct-acting valve type manual feed valve may be used. In this case, the direct acting valve requires a suction force more than the pilot valve. (Since the main valve seat hole diameter is larger than the pilot orifice hole diameter, the opening / closing force per cross-sectional area increases and the plunger's own weight increases accordingly. Therefore, it is preferable to use magnets (A) and (B) having a high magnetic flux density.
[0024]
【The invention's effect】
In the pilot valve type manual and electromagnetic water supply valve device and the like of the present invention, the same operation as that of a normal electromagnetic water supply valve device is performed by passing a current through the solenoid 47 (usually applying and exciting an AC voltage of 100 V). In addition, for example, there is an effect that the on- off valve operation (water supply and water stoppage) can be manually performed by the manual displacement of the movable member 53 even when there is no power supply due to a power failure or the like .
[Brief description of the drawings]
FIG. 1 is a front longitudinal sectional view of a single-type normally closed pilot valve type manual water supply valve device according to an embodiment of the present invention when a movable member is stopped at an origin (recovery) position.
FIG. 2 is a front longitudinal sectional view of a single-type normally closed pilot valve type manual water supply valve device according to an embodiment of the present invention when a movable member is stopped at a maximum displacement position.
FIG. 3 is a front longitudinal sectional view of a single normally closed pilot valve type manual and electromagnetic water supply valve device according to another embodiment of the present invention when the movable member is stopped at the origin (recovery) position. .
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... This apparatus of one Example, 11 ... Inflow port, 12 ... Inflow conduit, 13 ... Inflow chamber, 14 ... Outflow conduit, 15 ... Main valve seat, 16 ... Outlet, 17 ... Valve body, 20 ... Inner wall , 30 ... Diaphragm valve, 31 ... Pilot orifice, 33 ... Liquid tight packing part, 39 ... Guide case outer peripheral upper surface part, 40 ... Guide case, 41 ... Pilot valve, 42 ... Plunger, 43 ... Coil spring, 44 ... Copper wire 45 ... cylindrical bobbin, 46 ... terminal piece, 47 ... solenoid, 48 ... plunger lid, 49 ... magnet (A), 50 ... movable member of one embodiment, 51 ... magnet (B), 52 ... coil spring 53, movable members of other embodiments, 54, coil springs of other embodiments, 60, this apparatus of other embodiments.

Claims (2)

An inflow port through which water flows, an inflow conduit, an inflow chamber for propagating water pressure to the diaphragm valve, a main valve seat provided at an approximate center of the inflow chamber and an end of the outflow conduit, and an outflow tube A valve case in which a flow passage and an outflow port from which water flows out is integrally formed, a diaphragm valve is installed so as to close the main valve seat, and a guide case is pressed against the valve body against the liquid-tight packing portion of the diaphragm valve A plunger with a pilot valve fixed and provided with a magnet (A) so that the pilot orifice of the diaphragm valve is closed on the inner periphery of the guide case, and the plunger is always elastically energized. and which houses the coil spring, the outer periphery of the guide case established a solenoid, the outer peripheral upper surface portion of the guide case established a movable member provided with magnet (B) as the magnet (B) comes , the valve body and movable In the water supply valve assembly of the pilot valve system which is configured by installing a coil spring which always resiliently biasing a timber and is manually displaced movable member by contact Hanaredo of the magnet (B) within the guide casing A pilot valve characterized in that the main valve seat is opened and closed in conjunction with the diaphragm valve by sliding the magnet (A) and opening and closing the pilot orifice of the diaphragm valve with the pilot valve connected to the plunger. Manual and electromagnetic water supply valve device. Magnets (B) manually and electromagnetic water supply valve assembly of the pilot valve system according to claim 1, characterized in that contact Hanaredo the guide case from the axial direction of the plunger (sliding direction).

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