KR20010081459A - Solenoid and solenoid valve assembly - Google Patents

Abstract

PURPOSE: A solenoid and a solenoid assembly are provided to generate driving power of an armature by instantaneous feeding a power using a magnetically operated solenoid. CONSTITUTION: A solenoid assembly is connected to the upper portion of a valve body having an opening extended to an outlet(12) and a bore(13). The valve body has a chamber(14) connected to inlet and outlet(12). The solenoid assembly is received in an armature guide assembly to control the water outlet(12) of the valve body by the magnetomotive force of an electromagnet, the magnetic force of a permanent magnet, and spring force. A bobbin(23) is included in the solenoid assembly. An electric coil(24) is wound on the bobbin, and the end lead wire is fixed in the valve body. A non-magnetic T-shaped magnet cap(25) is fitted to the opening an armature sliding portion(23a) of the bobbin. A magnet(27) is movably received in a closed space formed by a magnet reception groove(25a) and the upper face of a frame(26). The magnet is made of rubber for absorbing noise. An armature(21) including an armature body(21a), an extension(21b) and a taper(21c) opens and closes the water outlet(12) while lifting up and down by the magnetic flux formed around an electric coil(24). Another valve body(22d) formed in the lower portion of a tube(22a) inserted with the extension of the armature is adhered to a valve seat(12a) when the armature is maintained in an initial preset state. The valve body is thrust into the inner face of the water outlet to block up the outflow of water.

Description

Solenoid and solenoid valve assembly

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solenoid valve operated by electric power and electromagnetic applied to control water flow into an inlet of a kitchen appliance such as a dispenser, dishwasher, washing machine, or refrigerator ice maker used for heating in a general household.

Solenoid valves operate at low power and require small and low manufacturing costs. In particular, the distributor used for home heating has a solenoid driven by electric power, and the valve controlled by the solenoid is used to control the flow of fluid with long lasting durability and low power when connected to water of various water quality and chemical composition. Maneuverability to control the flow quickly is required.

Solenoidally actuated valves create special problems in controlling the flow of fluid by applying solenoid to the solenoid mechanism with the solenoid mechanism attached to the valve body, and rapidly driving the armature to open and close the valve.

Therefore, it has been required to find a method and a means by which the plunger can rely on the solenoid's magnetomotive force and speed up its maneuverability by other factors.

It has been well known by Korean Patent Publication No. 99-15204 to increase the magnetic force in having a permanent magnet having a constant magnetic force, that is, an element interacting with an armature provided in the solenoid. However, since the permanent magnet is fixed to the frame, this technology has no problem with the adsorption of the armature. However, when the plunger is restored to its original position, it is limited by the maneuvering force returned by the permanent magnet. Therefore, there is a need for structures and methods for rapidly controlling the flow of fluid using the permanent magnets.

An object of the present invention is to provide a solenoid operated magnetically by electric magnetic force and a magnetic force of a permanent magnet so that the driving force of an amateur can be obtained with a small power, that is, a momentary power application.

The present invention for achieving the object of the present invention comprises a valve body formed of a substantially square valve body made of a non-metal material having an opening formed through the one side wall and the inlet and outlet passages connecting the valve chamber; Valve seat means for defining said outlet passage into said valve chamber; Ferromagnetic armature means for reciprocating between an open position and a closed position on the valve seat; Armature guide means made of a non-magnetic material having an opening defining a surface for guiding movement of the armature means together with armature means inserted into the chamber; Means for sealing between the valve chamber and the armature guide means; Spring means operative to tighten the armature means to close the valve seat and arranged in an opening of the armature guide means; Electromagnetism means acting with electrical force for movement of the armature means to open the valve seat; Permanent magnetic means moving in a direction opposite to the armature means while physically attracting force is generated within a certain range of movement of the armature means; And a ferromagnetic frame means accommodating the magnetic force means and the permanent magnetic means and fastened to the valve body.

1 is a perspective view of a valve according to the present invention,

2 is a cross-sectional view taken along the line A-A of Figure 1 in the initial pre-setting state,

3 is a cross-sectional view showing an operating state of FIG.

4 is a cross-sectional view of FIG. 2 showing yet another embodiment of the present invention;

5 is a plan view showing another embodiment of the present invention,

6 is an exploded perspective view of FIG. 5;

7 is an enlarged perspective view of a main portion of FIG. 6.

Explanation of symbols on the main parts of the drawings

1: valve assembly 10: valve body

11: entrance 12: exit

14 chamber 17 cap

18: base 20: solenoid assembly

21: Amateur 22: Diaphragm

23: bobbin 24: electric coil

25: magnet cap 26: frame

27: magnet

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Referring to FIG. 1, the valve assembly indicated by reference numeral 10 has a plastic valve body 10 having a water inlet indicated by reference numeral 11 and an outlet indicated by reference numeral 12. The solenoid assembly indicated by reference numeral 20 is fastened to the upper portion of the valve body 10.

Referring to FIG. 2, the valve body 10 has an opening formed therein and extending upwardly to connect with the outlet 12 and a bore 13 having a small passage therein.

The valve body 10 has a chamber 14 connected to the inlet / outlet 11, 12, is open into an enlarged bore extending into the chamber 14, and extends upwardly of the bore 13. First and second receiving grooves 15 and 16 are formed to accommodate the armature guide assembly, respectively. The armature guide assembly is accommodated in the accommodating grooves 15 and 16, and the first and second accommodating grooves 15 and 16 have a structure in which a stepped portion is formed and is enlarged upward.

The armature guide assembly includes a cap 17 that is received in the first receiving groove 15. The cap 17 has a through hole 17a having a smaller diameter than the bore 13 at the center thereof, and has an annular groove 17b formed in the circumferential direction on the upper surface of the cap 17a.

The second accommodating groove 16 accommodates a base 18 having a U-shaped cross section. The base 18 has a through hole 18a which is slightly larger in diameter than the through hole 17a formed in the cap 17 at the bottom center thereof, and has a groove 18b upwardly formed at the bottom thereof. Assembled so as to be spaced a predetermined distance from the upper surface of (17). Between the cap 17 and the base 18 is sealed between the chamber 14 formed in the valve body 10 and the armature guide assembly, and at the same time the edge of the diaphragm 22 surrounding the armature 21 to be described below is narrowed. It is fixed. At this time, the upper surface of the base 18 is located on the same plane as the upper surface of the valve body 10.

The solenoid assembly indicated by reference numeral 20 is accommodated in the armature guide assembly to control the water supply outlet 12 formed in the valve body 10 by the magnetic force and the spring force of the electromagnet and the permanent magnet.

The solenoid assembly 20 includes a bobbin 23 having an armature sliding part 23a having a circular cross section through a central portion thereof and having a flange 23b outwardly formed at a lower end thereof. An electric coil 24 is wound around the bobbin 23 and the end lead wire of the bobbin 23 is fixed to the valve body 10 having an unillustrated terminal electrically connected to the outside.

The electric coil 24 is housed in a ferromagnetic frame 26 to complete the flow of magnetic flux formed around the coil. The frame 26 is fixed to the upper surface of the main body 27 by a sheet metal screw 26a.

In the armature sliding part 23a formed in the bobbin 23, a magnet cap 25 made of a nonmagnetic material and having a T-shaped cross section is fitted into the opening from above. The magnet cap 25 has a cylindrical accommodating groove 25a inserted into the armature sliding part 23a at a predetermined depth and whose bottom surface is closed, and a flange 25b extending radially outward from an end of the accommodating groove. And an electric coil 24 is positioned between the flange 25b and the flange 23b formed on the bobbin 23.

The magnet receiving groove 25a formed in the magnet cap 25 is accommodated in the sealed space formed by the magnet receiving groove 25a and the upper surface of the frame 26 so that the magnet 27 can move up and down. The magnet 27 is attached to the bottom of the frame 26 to maintain the initial preset state in this state, the magnetic flux is formed in the electric coil 24 when the momentary power input (direct current) in this state to raise the armature 21 And as the magnetic force is formed in the armature while the armature 21 is raised, the magnets attached to the frame are pulled down by pulling the magnetic force of the magnets together, and the armature is raised so that the armature is within the magnetic force range of the magnet even when there is no power supply. As a result, the water outlet of the valve body is opened by maintaining the elevated state. Again, when the momentary power input (reverse DC), the armature in the opposite direction is formed in the armature, and the magnetism and repulsion force of the magnet are generated, pushing the magnet to the upper frame. It will descend and block the water outlet.

Here, the magnet 27 is preferably made to have a rubber material to absorb the noise generated when moving in the magnet receiving groove (25a).

Code 21 is showing an amateur. The armature 21 opens and closes the water outlet 12 of the valve body 10 while moving up and down by a magnetic flux formed around the electric coil 24.

The armature 21 includes an armature main body 21a fitted reciprocally to an armature sliding part 23a formed in the center of the bobbin 23, and an extension portion 21b extending below the armature main body 21a. Between the armature main body 21a and the extension part 21b, the taper 21c by which the diameter was gradually reduced is formed.

The extension portion 21b is fitted to the tube 22a formed on the diaphragm 22. The diaphragm 22 is made of a silicon material and has a certain elasticity, and an upper portion thereof is squeezed between the cap 17 and the base 18 accommodated in the valve body 10 to fix the diaphragm 22. ) And a tube 22 extending downward from the constriction portion 22b, and the armature 21 extension portion 21b is inserted into the tube 22.

In addition, a flexible bridge 22c is formed integrally with these by the injection method between the constriction portion 22b and the tube 22a, and this bridge 22c is armature 21 when it is raised and lowered in the armature 21. A length longer than the moving distance of the armature 21 is ensured so as not to impair the driving force of the armature 21.

The lower part of the tube 22a into which the extension 21b of the armature 21 is inserted is outward so as to be in close contact with the valve seat 12a extended from the water outlet 12 by the extension 21b of the armature 21. The valve body 22d extended by this is formed. The valve body 22d is in close contact with the valve seat 12a when the armature 21 is kept in the initial presetting state when the energization of the electric coil 24 is interrupted. The valve body 22d is brought into the inner peripheral surface of the water outlet 12 by its flexibility. It is pushed in and no longer allows the water to flow out.

4 shows another embodiment of the armature. 4 is identical in configuration to that of FIG. 2, except that the groove 28 is formed on the upper surface of the armature 21, and the magnet 28 is provided with another magnet 29 in the groove 28. In cooperation with 27, the driving force of the armature 21 is improved.

2, the solenoid assembly 20 includes armature flow distance limiting means for limiting the lifting and lowering distance of the armature 21. This flow distance limiting means is inserted into the hollow portion of the base 18 accommodated in the valve body 10, and includes a coil spring 30, washer 31, spring pin 32.

The spring pin 32 penetrates in a radial direction the point where the end portion of the extension portion 21b of the armature 21 comes into close contact with the water outlet 12 and closes to the bottom surface of the base 18 at a position to block the flow of water. The lower end point is determined at the position of the pinhole 21d, and the spring pin 32 suppresses the armature 21 from lowering further, and furthermore, the armature 21 is engaged with the pinhole 21d. Will limit the sealing power of

In addition, the coil spring 30 and the washer 31 play a role of maintaining the initial preset state of the armature 21. The coil spring 30 is located between the bottom face of the flange 23b of the bobbin 23 and the washer 31. FIG. 2 shows an initial presetting state of the armature 21. As shown in FIG. In the state of FIG. 2, when the electric coil 24 is energized to form a magnetic flux around the armature 21, the armature 21 contracts the coil spring 30 by the magnetic force of the electric coil 24 as shown in FIG. 3. Ascending to the frame 26, the fluid flows as the outlet formed in the chamber 14 opens.

1 shows a valve assembly 1 with multiple water outlets. Referring to the drawings, the valve assembly 1 is introduced into the valve body 10 through which a plurality of chambers 14 are penetrated from the water inlet 11. Water introduced into the chamber 14 is selectively controlled to open or block the water outlet 12 by the magnetic flux formed in the solenoid assembly 20 assembled in each chamber 14 to control the flow flow.

Here, in the valve assembly 1, a plurality of chambers 14 are formed by one injection molded product, and the solenoid assembly 20 is assembled in correspondence with the respective chambers 14.

5 to 7 show another embodiment of the present invention. Referring to the drawings, it is illustrated that the valve body 10 and the solenoid assembly 20 may be configured as a unit unit of a valve assembly formed of units, and each unit unit may be combined and used in parallel as necessary.

Referring to FIG. 6, a gasket groove 33 is formed on the side wall of the valve body 10 formed of the unit unit in the circumferential direction of the chamber 14, and the engagement protrusion 34 is formed on the side wall of the valve body 10 coupled thereto. Is formed and the watertight state is maintained through the gasket 35 therebetween.

In addition, a plurality of bolt holes 36 are formed in the valve body 10 in each valve assembly 1 in the penetrating direction of the chamber 14, and after the bolts 37 are inserted into the bolt holes 36, the nut is provided. It can be fixed to (38) can be used to combine a plurality of valve assemblies according to the required number.

As described above, the present invention drives the armature by the magnetic force forming the magnetic flux by the electric power of the instantaneous power source, and at the same time, by providing the permanent magnet on the upper portion of the armature, The effect of opening and closing the exit can be obtained.

Claims (13)

In an electromagnet operated valve assembly, (a) a substantially square valve body means made of a non-metallic material having a valve chamber having an opening formed through one side wall and an inlet / outlet passage connecting the valve chambers, respectively; (b) valve seat means for defining said outlet passage into said valve chamber; (c) ferromagnetic armature means for reciprocating between the open and closed positions on the valve seat; (d) armature guide means made of a nonmagnetic material having an armature means inserted into the chamber and having an opening defining a surface for guiding movement of the armature means; (e) means for sealing between said valve chamber and said armature guide means; (f) spring means operative to tighten the armature means to close the valve seat and arranged in an opening of the armature guide means; (g) electromagnetizing means operating with electrical force for movement of the armature means to open the valve seat; (h) permanent magnetic means moving in the opposite direction to the armature means while physically attracting force is generated within a certain range of movement of the armature means; And (i) a magnet cap means for allowing the magnet to move with a certain space so as to move the magnet by suction and repulsive force of the armature; Solenoid valve assembly comprising a; (j) a ferromagnetic frame means for receiving the magnetic force means and the permanent magnetic means and is fastened to the valve body. The solenoid valve assembly according to claim 1, wherein the sealing means is made of a soft elastic member and directly closes or opens the valve seat with the armature means. 3. The solenoid valve assembly according to claim 2, wherein the armature means includes armature lowering range limiting means for limiting a pressing force in close contact with the valve seat. 2. A solenoid valve assembly according to claim 1, wherein the armature means is provided with another permanent magnetic means at a position corresponding to the permanent magnetic means. In an electromagnet operated valve assembly, (a) a substantially rectangular valve body means comprising a non-metallic material having a valve chamber having an opening formed through one side wall, an inlet passage connecting the valve chamber, and a plurality of outlet passages connecting the valve chamber; (b) a plurality of valve seat means correspondingly defining the plurality of outlet passages into the valve chamber, respectively; (c) a plurality of ferromagnetic armature means for reciprocating between an open position and a closed position on the plurality of valve seats; (d) armature guide means made of a non-magnetic material having a plurality of openings defining a surface for guiding movement of the plurality of armature means together with a plurality of armature means inserted into the chamber; (e) means for sealing between said plurality of valve chambers and said plurality of armature guide means; (f) a plurality of spring means operative to tighten the plurality of armature means to close the plurality of valve seats and arranged in the openings of the plurality of armature guide means; (g) a plurality of independent electromagnetism means each operating with electrical force for movement of the plurality of armature means to open the plurality of valve seats; (h) a plurality of permanent magnetic means moving in a direction opposite to the armature means while physically attracting force is generated within a certain range of movement of the armature means; And (i) a plurality of ferromagnetic frame means for receiving the plurality of magnetic force means and the plurality of permanent magnetic means and coupled to the valve body; 6. The solenoid valve assembly according to claim 5, wherein the plurality of sealing means is made of a soft elastic member and directly closes or opens the plurality of valve seats together with the plurality of armature means. 7. The solenoid valve assembly according to claim 6, wherein the plurality of armature means includes a plurality of armature lowering range limiting means for limiting the pressing force in close contact with the plurality of valve seats. 6. The solenoid valve assembly of claim 5, wherein the plurality of armature means is provided with another permanent magnetic means at a position corresponding to the plurality of permanent magnetic means. In the valve assembly, (a) a substantially square first valve body means made of a non-metallic material having a valve chamber having an opening formed through one side wall and an inlet / outlet passage connecting the valve chambers, respectively; (b) a substantially square second valve body means made of a non-metallic material having a valve chamber with openings formed through both side walls and an outlet passage connecting the valve chamber; (c) a substantially square third valve body means made of a non-metallic material having a valve chamber with openings formed through both side walls and an inlet / outlet passage connecting the valve chambers, respectively; (d) valve body connecting means for connecting the first, second and third valve body means to form the respective chambers in one passage; And (e) sealing means for sealing the connection portions of the respective chambers; valve assembly comprising a. In the solenoid valve assembly, (a) a substantially square first valve body means made of a non-metallic material having a valve chamber having an opening formed through one side wall and an inlet / outlet passage connecting the valve chambers, respectively; (b) a substantially square second valve body means made of a non-metallic material having a valve chamber with openings formed through both side walls and an outlet passage connecting the valve chamber; (c) a substantially square third valve body means made of a non-metallic material having a valve chamber with openings formed through both side walls and an inlet / outlet passage connecting the valve chambers; (d) valve body connecting means for connecting the first, second and third valve body means to form the respective chambers in one passage; (e) sealing means for sealing connecting portions of the respective chambers; (f) a plurality of valve seat means each correspondingly defining said plurality of outlet passages into said valve chamber; (g) a plurality of ferromagnetic armature means for reciprocating between an open position and a closed position on the plurality of valve seats; (h) armature guide means made of a non-magnetic material having a plurality of openings defining a surface for guiding movement of the plurality of armature means together with a plurality of armature means inserted into the chamber; (i) means for sealing between said plurality of valve chambers and said plurality of armature guide means; (j) a plurality of spring means operative to tighten the plurality of armature means to close the plurality of valve seats and arranged in the openings of the plurality of armature guide means; (k) a plurality of independent electromagnetism means each operating with electrical force for movement of the plurality of armature means to open the plurality of valve seats; (l) a plurality of permanent magnetic means moving in a direction opposite to the armature means while physically attracting force is generated within a certain range of movement of the armature means; And (m) a plurality of ferromagnetic frame means for receiving the plurality of magnetic force means and the plurality of permanent magnetic means and coupled to the valve body; solenoid valve assembly comprising a. 11. The solenoid valve assembly of claim 10, wherein the plurality of armature means is provided with another permanent magnetic means at a position corresponding to the plurality of permanent magnetic means. (a) ferromagnetic armature means; (b) armature guide means made of a non-magnetic material defining a surface for guiding movement of the armature means; (c) spring means for tightening the armature means to maintain an initial presetting state; (d) electromagnet means for operating with electrical force for movement of the armature means; (e) a plurality of permanent magnetic means moving in a direction opposite to the armature means while physically attracting force is generated within a certain range of movement of the armature means; And and (m) a ferromagnetic armature means for receiving the ferromagnetic armature means, the armature guide means, the spring means, the magnetic force means, and the permanent magnetic means and having an opening in which the armature means emerge. 13. The solenoid assembly of claim 12, wherein the plurality of armature means is provided with another permanent magnetic means at a position corresponding to the plurality of permanent magnetic means.