KR20170033970A

KR20170033970A - Water Valve Assembly

Info

Publication number: KR20170033970A
Application number: KR1020150131870A
Authority: KR
Inventors: 서상원; 오민영; 김희창
Original assignee: 두얼메카닉스 주식회사
Priority date: 2015-09-17
Filing date: 2015-09-17
Publication date: 2017-03-28

Abstract

The present invention relates to an electric water supply valve assembly for home appliances, and more particularly to an electric water supply valve assembly for household appliances, which comprises an inlet 11 into which water is introduced, an outlet 12 through which water introduced through the inlet 11 flows, A valve body 10 including an orifice portion 13 formed with an orifice hole 13A; A magnetic force generating unit 20 installed on the upper side of the orifice part 13 and generating a magnetic force when power is applied to the coil; A cylindrical plunger housing 30 installed to penetrate the inside of the magnetic force generating section 20; A plunger (40) installed inside the plunger housing (30) and receiving an elastic force downward by a spring (S); And a diaphragm 50 located at an upper portion of the orifice hole 13A and selectively shielding the orifice hole 13A by the lifting and lowering action of the plunger 40. The plunger housing 30 is opened at the bottom, A cylindrical housing main body 31 into which the plunger 40 is inserted; A coupling portion 32 having a relatively large diameter at the lower end of the housing main body 31 and projecting downward to be coupled with the valve body 10; And a blocking portion 33 protruding from the inner circumferential surface of the coupling portion 32 and spaced apart from the inner circumferential surface of the coupling portion 32 and blocking water from flowing into the upper portion of the diaphragm 50. According to this configuration, Water can be supplied or blocked more accurately.

Description

[0001] The present invention relates to a water valve assembly for a domestic appliance,

The present invention relates to an electric water supply valve assembly for an electric appliance, and more particularly, to an electric water supply valve assembly for an electric appliance, such as a washing machine, a water purifier, and a cold / hot water heater, Assembly.

1, a conventional water supply valve is provided with an inlet A for introducing water and a water inlet A for supplying water to the inside of the home appliance such as a washing machine, a water purifier, And an orifice portion C for installing the plunger 100 and the diaphragm 110 to supply or cut off the water.

At this time, the diaphragm 110 is provided with a small-diameter outlet hole 111, and the plunger 100 is installed to be resiliently supported by a spring. When the power is not applied, the plunger 100 is lowered The orifice portion C is closed by the diaphragm 110 while the upper surface of the diaphragm 110 is kept pressed and the water introduced from the inflow portion A flows through the orifice portion C into the outflow port B It blocks the flow.

When the power is applied, the plunger 100 is lifted while compressing the spring, whereby the water outlet hole 111 of the diaphragm 110 is opened, whereby a small amount of water remaining in the orifice portion C flows out The diaphragm 110 is lifted up by the pressure of the water introduced from the inlet A and the orifice C is discharged from the orifice C through the outlet 111, And the water flows from the inlet A to the outlet B.

In the conventional water supply valve having the above structure, there is a problem that foreign matter is easily caught in the water outlet hole 111. When the water outlet hole 111 is closed, water remaining in the orifice portion C is discharged through the water outlet hole 111 So that the diaphragm 110 is prevented from rising due to the pressure of the water applied at the inlet A. As a result, the water supply and shutoff operation using the water supply valve can not be accurately performed, The diaphragm 110 can not be brought into close contact with the flow path of the orifice portion C, and the flow path shutting operation can not be accurately performed.

In order to solve the problems of the conventional water supply valve, a fine sieve net is provided on the side of the inlet A so that the water outlet hole 111 of the diaphragm 110 is not easily blocked by foreign matter. However, Since the outflow hole 111 is closed in the mid to long term, the service life is somewhat extended, but the solution is not a fundamental solution.

KR 10-1115717 B1 KR 10-1115723 B1 KR 10-1115153 B1 KR 10-2000-0002817 A

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the conventional household water supply valve assembly, and it is an object of the present invention to accurately perform a diaphragm shielding operation by the diaphragm, And it is an object of the present invention to provide a household water supply valve assembly in which a flow path is not easily obstructed by a foreign matter without installing a fine sieve.

It is an object of the present invention to provide a water supply valve assembly including a valve body including an inlet through which water flows into the inlet, an outlet through which the water introduced through the inlet is discharged, and an orifice formed with an orifice hole, ; A magnetic force generating unit installed on the upper side of the orifice and generating a magnetic force when power is applied to the coil; A cylindrical plunger housing installed through the inside of the magnetic force generating portion; A plunger installed inside the plunger housing and receiving an elastic force downward by a spring; And a diaphragm disposed at an upper portion of the orifice hole and selectively shielding the orifice hole by a lifting operation of the plunger, wherein the plunger housing has a cylindrical housing body having a lower portion thereof opened and a plunger inserted therein; A coupling portion formed on the lower end of the housing main body and having a relatively large diameter and projecting downward to be coupled to the valve main body; And a blocking portion protruding from the inner circumferential surface of the coupling portion at a predetermined distance and blocking water from flowing into the upper portion of the diaphragm.

In the plunger of the present invention, a coupling protrusion is formed at a lower portion of the diaphragm, and an upper portion of the diaphragm is provided with a coupling portion to be coupled with the coupling protrusion, thereby moving the diaphragm in conjunction with the plunger.

Further, the diaphragm of the present invention is characterized in that a conical protrusion is formed so that the resistance generated when the plunger is lifted by the water introduced into the plunger housing is reduced.

According to the present invention, the inflow of water into the upper portion of the diaphragm of the household water supply valve assembly is interrupted, so that the pressure of the water that hinders the rise of the diaphragm is not large. Accordingly, the diaphragm is attached to the lower end of the plunger, Even if the diaphragm is raised, the diaphragm can be easily raised. As a result, it is not necessary to form a conventional water outlet hole for discharging the water on the upper side of the diaphragm, and furthermore, Such as leakage of water, is prevented.

1 is a sectional view showing an example of a conventional water supply valve assembly for a washing machine,
FIG. 2 is a perspective view showing an example of a domestic water supply valve assembly according to the present invention,
FIG. 3 is an exploded perspective view of FIG. 2,
4 is a sectional view showing an example of a valve body according to the present invention,
FIG. 5 is a sectional view showing an example of a coupling structure of a magnetic force generation, a plunger housing, a plunger, and a diaphragm according to the present invention,
6 is a sectional view showing an example of a plunger housing according to the present invention,
7 is a sectional view showing an example of a plunger and a diaphragm according to the present invention,
8 is an exploded view showing an example in which the orifice hole is blocked by the appliance water valve assembly according to the present invention.
9 is a state view showing an example in which the orifice hole is opened by the appliance water valve assembly according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

According to the present invention, it is not necessary to form an outlet hole for removing the pressure of water in the diaphragm, and the diaphragm can accurately perform the shielding operation of the orifice. Thus, 2 and 3, the water supply valve assembly of the present invention includes a valve body 10, a magnetic force generating portion 20, a plunger housing 30, a plunger 40, and a diaphragm 50 ).

3 and 4, the valve body 10 includes an inlet 11 through which water flows into the inside, an outlet 12 through which the water introduced through the inlet 11 flows, an inlet 11, And an orifice portion 13, which is positioned between the orifices 13A and 13B.

The valve body 10 having the above-described structure is configured such that the diaphragm 50 described later is located on the upper portion of the orifice hole 13A and selectively closes or separates from the upper surface of the orifice hole 13A, By this operation, water flowing in the inlet port 11 is discharged to the outside of the valve body 10 through the orifice hole 13A and the discharge port 13. [

5, the magnetic force generating unit 20, which is installed on the upper side of the valve body 10 and raises the plunger 40, which will be described later, by the magnetic force when the power is applied, is a general water supply valve (solenoid valve) When the power is supplied to the plunger 40, the plunger 40 is raised by the magnetic force, and when the power supply is interrupted, the spring S is closed. As a result, The plunger 40 is kept in the lowered state and the flow path is kept shut off while the power is not applied.

The magnetic force generating unit 20 is widely used in general solenoid valves and the like, and a detailed description of the structure and operation of the magnetic force generating unit 20 will be omitted.

6, the plunger housing 30, which is made of a non-magnetic material and inserted through a central portion of the magnetic force generating portion 20, has an insertion hole 31A having a lower portion thereof opened to insert the plunger 40 therein, A coupling portion 32 formed to have a relatively large diameter at the lower end of the housing main body 31 and projecting downward to be coupled with the valve body 10, And a blocking portion 33 protruding from the inner circumferential surface of the diaphragm 50 so as to be separated from the inner circumferential surface of the diaphragm 50 by a predetermined distance.

5 and 8, a spring S is inserted into the plunger housing 30 and the plunger 40 is elastically supported by the spring S, And the fitting portion 32 of the plunger housing 30 is assembled and installed so as to be hermetically held in the orifice portion 13 of the valve body 10. [ At this time, an O-ring (not shown) is provided so as to be in close contact with the lower end of the coupling portion 32 to maintain the airtightness of the coupling portion 32 and the orifice portion 13.

The blocking portion 33 is configured to cover the periphery of the diaphragm 50 to be described later so that the water flowing through the inlet 11 is prevented from being easily introduced into the upper portion of the diaphragm 50, 50) are easily elevated to ensure an accurate ascending and descending operation.

That is, in the diaphragm 50 according to the present invention, the water remaining on the upper side of the diaphragm is discharged to the outflow port to remove the pressure, and the complicated operation of lifting the diaphragm is not required. Further, The problem of leakage such as leaking water is fundamentally solved.

Since the blocking portion 33 prevents the water flowing in the inlet 11 from directly pressing the upper surface of the diaphragm 50 when the diaphragm 50 is lifted to open the orifice hole 13A The downward pressure is reduced and the magnetic force generating section 20 can easily raise the plunger 40 without increasing the intensity of the voltage supplied to raise the plunger 40. [

As shown in FIG. 7, the plunger 40 inserted into the insertion hole 31A of the plunger housing 30 and moved up and down by the magnetic force of the spring S is formed with a coupling protrusion 41 at the lower portion thereof, A diaphragm 50 to be described later is engaged with the engaging projection 41 so that the diaphragm 50 is moved up and down together with the lifting operation of the plunger 40. [

The water inside the plunger housing 30 can not be quickly released due to the lifting action of the plunger 40 when the plunger 40 is lifted while water is flowing into the plunger housing 30, In order to solve this problem, a conical protrusion 42 is formed at the upper end of the plunger 40 so that the plunger 40 is inserted when the plunger 40 is lifted. The water remaining in the hole 31A easily escapes through the conical protrusion 42 and the plunger 40 is easily raised.

In addition, in the present invention, when the plunger 40 is raised by forming the discharge groove (not shown) radially along the circumference of the insertion hole 31A, water remaining in the insertion hole 31A through the discharge groove It can easily be carried out so as to be able to escape downward.

The diaphragm 50, which is coupled to the lower end of the plunger 40 and selectively shields the orifice hole 13A by the lifting operation, is formed of a cylindrical block made of soft rubber or the like as shown in Fig. 7, And an engaging portion 51 protruding from the engaging projection 41 of the plunger 40 is provided on the upper surface.

8, when the power is not applied to the magnetic force generating unit 20, the water supply valve assembly for a washing machine has a spring S (not shown) inserted into the insertion hole 31A of the plunger housing 30, The diaphragm 50 coupled to the lower end of the plunger 40 is held in a state of shielding the orifice hole 13A so that the valve body 10 is closed, The water flowing inward through the inlet 11 of the water inlet 13 is prevented from passing through the orifice hole 13A and the water supply is interrupted.

When power is applied to the magnetic force generating unit 20, the plunger 40 is lifted while compressing the spring S by the magnetic force generated by the magnetic force generating unit 20 as shown in FIG. 9, The diaphragm 50 coupled to the lower end of the plunger 40 is lifted together and the diaphragm 50 is lifted so that the orifice hole 13A is opened and the insertion hole 31A of the plunger housing 30 and the orifice portion A small amount of water remaining in the valve body 13 and the water flowing through the inlet 11 are combined and flow to the outlet 12 and are discharged to the outside of the valve body 10. [

As described above, the water supply valve assembly for a washing machine according to the present invention is structured such that the blocking part blocks water from being introduced into the upper part of the diaphragm from the inlet side to prevent the diaphragm from moving up and down. As a result, There is no need to form an outflow hole for discharging, and thereby, the problem of the residual water such as leakage of water due to clogging of the outflow hole with foreign substances is fundamentally eliminated.

1: Water supply valve assembly 10: Valve body
11: inlet 12: outlet
13: Orifice part 13A: Orifice ball
20: magnetic force generating section 30: plunger housing
31: housing body 31A: insertion hole
32: engaging portion 33:
40: plunger 41: engaging projection
42: protrusion 50: diaphragm
S: Spring

Claims

1. A water supply valve assembly installed in a household appliance to supply and shut off water,
An orifice hole 13A positioned between the inlet 11 and the outlet 12 for discharging water introduced through the inlet 11 and an outlet 12 for discharging the water introduced through the inlet 11, A valve body (10) including a formed orifice portion (13);
A magnetic force generating unit 20 installed above the orifice 13 to generate a magnetic force when power is applied to the coil;
A cylindrical plunger housing 30 installed through the inside of the magnetic force generating portion 20;
A plunger (40) installed inside the plunger housing (30) and receiving an elastic force downward by a spring (S);
And a diaphragm 50 located above the orifice hole 13A and selectively shielding the orifice hole 13A by the lifting operation of the plunger 40,
The plunger housing (30) has a cylindrical housing body (31) having a lower portion opened and into which the plunger (40) is inserted; A coupling part 32 having a relatively large diameter at a lower end of the housing main body 31 and projecting downward to be coupled with the valve body 10; And a blocking portion (33) protruding from the inner circumferential surface of the coupling portion (32) at a predetermined distance and blocking water from flowing into the upper portion of the diaphragm (50).

The method according to claim 1,
The plunger 40 has a coupling protrusion 41 formed at a lower portion thereof,
Wherein the diaphragm (50) is provided with an engaging portion (51) to be engaged with the engaging projection (41) on an upper surface of the diaphragm (50) .

The method according to claim 1 or 2,
A conical protrusion 42 is formed on the upper portion of the diaphragm 50 so that the resistance generated when the plunger 40 is lifted by the water introduced into the plunger housing 30 is reduced. Wherein the valve assembly comprises: