KR200473129Y1

KR200473129Y1 - Solenoid valve

Info

Publication number: KR200473129Y1
Application number: KR2020130009594U
Authority: KR
Inventors: 김철민
Original assignee: 김철민
Priority date: 2013-11-21
Filing date: 2013-11-21
Publication date: 2014-06-17

Abstract

The present invention relates to a cap having an inlet orifice formed therein; A valve body having a valve seat formed with a discharge orifice formed in the same line as the inlet orifice by screwing with the cap portion; And a valve body formed inside the valve body and having a valve surface formed at an end portion thereof for selectively opening and closing the discharge orifices so as to abut on the valve seat and recessed to the valve surface in the longitudinal direction, And a plunger including a pair of first grooves symmetrically formed and a second groove passing through the center of the valve surface as a concave groove elongated on the valve surface, To prevent movement, and to provide an advantageous effect of minimizing the space limitation due to the installation of the solenoid valve.

Description

[0001] The present invention relates to a solenoid valve,

The present invention relates to a solenoid valve, and more particularly, to a normally open type solenoid valve.

A solenoid valve refers to a valve that is automatically opened and closed using the electromagnetic force of an electromagnetic coil.

A solenoid valve disclosed in Korean Patent Publication No. 10-2012-0003302 (published on Jan. 10, 2012, hereinafter referred to as Document 1) includes a plunger, a valve body, and a valve seat provided inside the housing. The plunger is actuated through the electromagnetic force of the coil, which selectively opens and closes the valve seat while reciprocating the plunger to selectively block fluid passing through the valve seat.

The valve surface of the plunger and the valve seat are closely contacted to selectively block the fluid passing through the valve seat.

Normally open type solenoid valve. In the normal state in which the coil is not energized, an elastic member for returning the plunger causes the valve surface of the plunger to move away from the valve seat to induce fluid to flow. When electricity is applied to the coil, the plunger operates, The valve means a solenoid valve that closes the fluid to block the flow of the fluid.

However, when the valve surface and the valve seat are in close contact with each other, the valve surface and the valve seat are adhered to each other due to the viscosity of the fluid.

On the other hand, the solenoid valve disclosed in Korean Patent Laid-Open Publication No. 10-2013-0090636 (published on March 13, 2014, hereinafter referred to as Document 2) is disposed perpendicular to the longitudinal direction of the pipe. Therefore, the solenoid valve disclosed in Document 2 has a problem of occupying a large space.

Korean Patent Publication No. 10-2012-0003302 (published on Jan. 10, 2012)

Accordingly, it is an object of the present invention to provide a solenoid valve capable of preventing a valve surface and a valve seat from adhering to each other due to viscosity of a fluid.

It is another object of the present invention to provide a solenoid valve that minimizes the spatial constraint.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned here can be understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a valve body including a cap portion having an inlet orifice formed thereon, and a discharge orifice formed by being screwed to the cap portion and formed in line with the inlet orifice, A pair of valves formed on an end surface of the valve seat so as to selectively open and close the discharge orifices and recessed to the valve surface in the longitudinal direction and symmetrically formed with respect to the center of the valve seat, And a plunger including a first groove of the valve surface and a second groove passing through the center of the valve surface as a concave groove formed to be long on the valve surface.

Preferably, the second groove may be connected to the first groove.

Preferably, a plurality of third grooves formed in the valve surface and connected to the second grooves may be formed.

Preferably, the third groove is symmetrically formed with respect to the second groove.

Preferably. The second grooves may be bent and at least two of the third grooves may be arranged at predetermined intervals along the circumferential direction with respect to the center of the valve surface.

According to one embodiment of the present invention, a groove connected to the center of the valve surface is formed on the valve surface to minimize the adhesion area between the valve seat and the valve surface and to accommodate the deposited fluid, Thereby providing an advantageous effect of preventing movement.

According to an embodiment of the present invention, the inlet orifice and the discharge orifice are formed in the same line to provide an advantageous effect of minimizing the spatial restriction due to the installation of the solenoid valve.

FIG. 1 is a view showing a solenoid valve according to a preferred embodiment of the present invention;
Fig. 2 is an exploded perspective view of the solenoid valve shown in Fig. 1,
FIG. 3 is a view showing the flow of fluid in the normally open state of the solenoid valve shown in FIG. 1,
FIG. 4 is a view showing a valve surface of the solenoid valve shown in FIG. 1,
5 is a view showing a valve surface formed by the second groove and a space of the valve seat,
6 is a view showing a third groove,
Fig. 7 is a view showing another modification of the valve surface of the solenoid valve shown in Fig. 1. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. It will be appreciated that those skilled in the art can change or modify the embodiments without departing from the scope and spirit of the invention.

The present invention is characterized in that a groove is formed in the valve surface of the plunger to prevent adhesion between the valve surface and the valve seat.

FIG. 1 is a view showing a solenoid valve according to a preferred embodiment of the present invention, and FIG. 2 is an exploded perspective view of the solenoid valve shown in FIG. 1 and 2 clearly show only the main feature parts in order to clearly understand the concept of the present invention and as a result various variations of the illustration are expected and the scope of the present invention Need not be limited.

1 and 2, a solenoid valve according to an embodiment of the present invention may include a cap portion 100, a valve body 200, and a plunger 300. [

The cap portion 100 includes an inlet orifice 110. A screw thread 120 may be formed on the inner circumferential surface of the cap part 100. One side of the cap part 100 is connected to the fluid pipe and the other side is connected to the plunger 300 by screwing with the valve body 200.

The valve body 200 forms a receiving space including the plunger 300 therein. At the end of the valve body 200, a discharge orifice 210 is formed. The discharge orifices 210 may be formed in the same line as the inlet orifices 110. Specifically, the inlet orifice 110 and the discharge orifice 210 may be formed along the center line C passing through the center of the cross section of the valve body 200 and the plunger 300. As a result, the flow of the fluid passing through the solenoid valve, the flow of the fluid flowing in the fluid pipe, and the flow of the fluid discharged into the fluid pipe according to the embodiment can be formed in parallel.

As shown in FIG. 2, since the coil 1 can be formed along the longitudinal direction of the valve body 200, that is, the longitudinal direction of the fluid tube, the installation space of the solenoid valve can be minimized.

The end of the valve body 200 can be fixed to the coil 1 through the nut 2. [ A screw thread 230 is formed on the other side of the valve body 200 so as to be screwed into the cap portion 100.

A valve seat 220 connected to the discharge orifice 210 may be formed inside the end of the valve body 200. The valve seat 220 is where the valve face 310 of the plunger 300 abuts.

The plunger 300 reciprocates within the valve body 200 to selectively open and close the discharge orifice 210. At the end of the plunger 300, a valve surface 310 to which the valve seat 220 abuts is formed.

A first groove 320 may be formed on the outer circumferential surface of the plunger 300 so as to be concave up to the valve surface 310 in the longitudinal direction. The first groove 320 serves to smooth the flow of the fluid flowing between the outer peripheral surface of the plunger 300 and the inner wall of the valve body 200 and the reciprocating movement of the plunger 300. The first grooves 320 may be symmetrical with respect to the center of the cross section of the plunger 300 to form a pair.

The elastic member 340 may be formed around the plunger 300. The elastic member 340 returns the plunger 300 in a normally open state with the valve face 310 and the valve seat 220 in close contact with each other.

A hole 350 communicating with the inlet orifice 110 of the cap portion 100 may be formed inside the end portion of the plunger 300. The end of the hole 350 is formed to extend from the center of the end face of the plunger 300 to the outer circumferential surface to guide fluid introduced through the inlet orifice 110 between the outer circumferential surface of the plunger 300 and the inner wall of the valve body 200.

3 is a view showing the flow of fluid in the normally open state of the solenoid valve shown in Fig.

Referring to FIG. 3, in a normal state in which no electricity is applied, the valve face 310 is separated from the valve seat 220. As a result, the fluid introduced into the inlet orifice 110 of the cap portion 100 flows through the hole 350 and flows between the outer peripheral surface of the plunger 300 and the inner wall of the valve body 200. Thereafter, the fluid flows to the discharge orifice 210 through the space between the valve surface 310 and the valve seat 220 and is discharged.

FIG. 4 is a view showing the valve surface of the solenoid valve shown in FIG. 1, and FIG. 5 is a view showing a space between the valve surface and the valve seat formed by the second groove.

On the valve surface 310, a second groove 330 passing through the center C of the valve surface 310 may be formed. The second groove 330 is recessed to a predetermined width to minimize the area of the valve seat 310 and the valve seat 220 to be engaged with each other. In addition, the second groove 330 may receive the deposited fluid that causes adhesion between the valve surface 310 and the valve seat 220 to prevent adhesion from occurring.

5, since there is a space between the second groove 330 and the valve seat 220, it is possible to prevent the valve face 310 and the valve seat 220 from moving due to the adhesion, can do.

Meanwhile, the second groove 330 may be formed to be connected to the first groove 320. The space between the outer circumferential surface of the plunger 300 and the inner wall of the valve body 200 and the second groove 330 can be isolated through the valve seat 220 with the valve seat 220 abutting against the valve surface 310 have.

FIG. 6 is a view showing a third groove, and FIG. 7 is a view showing another modification of the valve surface of the solenoid valve shown in FIG.

Meanwhile, as shown in FIG. 6, a third groove 360 may be formed in the valve surface 310. A plurality of third grooves 360 may be formed along the second grooves 330. Specifically, the third grooves 360 may be connected to the second grooves 330 at a predetermined interval in a direction perpendicular to the longitudinal direction of the second grooves 330. The width of the third groove 360 may be smaller than the width of the second groove 330. The third groove 360 may be formed symmetrically with respect to the second groove 330.

The third groove 360 further minimizes the adhesion area of the valve seat 220 and the valve surface 310, and more effectively accommodates the deposited fluid, thereby enhancing the effect of preventing adhesion. In addition, the valve seat 220 functions to prevent fluid from being deposited by inducing vigorous flow of the fluid around the valve seat 220 in the process of the valve seat 220 and the valve face 310 being separated from each other.

7, as a modification of the second groove 330, the second groove 330 may be bent in a clockwise or counterclockwise direction with respect to the center C of the valve face 310 have. A plurality of second grooves 330 may be formed at predetermined intervals along the circumferential direction so as to have an overall impeller shape.

The second groove 330 of Figure 7 not only reduces the area of adhesion between the valve seat 220 and the valve surface 310 but also reduces the area of the valve seat 220 in the process of the valve seat 220 and the valve surface 310 falling, It is possible to effectively prevent the valve seat 220 and the valve face 310 from being adhered to each other.

As described above, the solenoid valve according to one preferred embodiment of the present invention has been specifically described with reference to the accompanying drawings.

It will be understood by those skilled in the art that various modifications, substitutions and alterations can be made hereto without departing from the spirit and scope of the present invention as defined by the appended claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical idea of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas which are within the scope of the same should be interpreted as being included in the scope of the present invention.

100: cap part
110: inlet orifice
200: Valve body
210: Discharge orifice
220: Valve seat
300: plunger
310: valve face
320: First Home
330: 2nd home
340: elastic member
350: hole
360: Third Home

Claims

A cap portion having an inlet orifice formed therein;
A valve body having a valve seat formed with a discharge orifice formed in the same line as the inlet orifice by screwing with the cap portion; And
A valve body formed inside the valve body and having a valve surface formed at an end portion thereof for selectively opening and closing the discharge orifices in contact with the valve seat and recessed to the valve surface in the longitudinal direction on the outer circumferential surface, And a second groove passing through the center of the valve surface as a concave groove formed to be long on the valve surface,
And a solenoid valve.

The method according to claim 1,
And the second groove is connected to the first groove.

3. The method of claim 2,
And a plurality of third grooves formed on the valve surface and connected to the second grooves.

The method of claim 3,
And the third groove is symmetrically formed with respect to the second groove.

5. The method of claim 4,
Wherein the second grooves are bent and at least two of the third grooves are disposed at predetermined intervals along the circumferential direction with respect to the center of the valve surface.