KR101543315B1 - High Pressure Solenoid Valve - Google Patents

Abstract

The present invention relates to a high-pressure solenoid valve. The present invention provides, as an embodiment of the present invention, an air conditioner comprising: a body portion having an input port and an output port and having a flow path connecting the input port and the output port; a valve body coupled to the body portion, And a coil portion coupled to the valve portion and surrounding the outer circumference of the valve portion and operating the valve portion with an electromagnet, wherein the valve element has a valve seal which is in close contact with the flow passage when the flow passage is closed And the valve body is provided with an internal flow path through which a part of the fluid flowing into the input port flows into the valve packing.

Description

High Pressure Solenoid Valve

The present invention relates to a high-pressure solenoid valve that opens or closes a flow path of a fluid.

Generally, in a fluid storage system, a valve is used to interrupt the supply of fluid from the storage location.

In particular, a solenoid pressure valve is often used as a factor for interrupting the supply of fluid from a storage place in a system storing gas stored at high pressure such as CNG, LPG, LNG, etc.

The conventional solenoid pressure valve employs a mode in which the main valve opens and closes the flow passage by opening and closing the discharge port in the housing. Here, the main valve opens and closes the flow path by moving by the action of the solenoid.

However, in general solenoid pressure valves, the solenoid capacity determines the overall valve sealing performance.

Therefore, it is necessary to increase the capacity of the solenoid in order to open and close the flow of the high-pressure fluid. However, in the case of a solenoid pressure valve having a large capacity, the size is large and the unit price is high. On the other hand, if the performance of the solenoid is deteriorated due to the deterioration of performance, there is a problem that the valve may malfunction because there is no factor to compensate the deterioration.

Korea Public Utility Model 20-2011-0001852 (2011.2.24)

The present invention proposes a high-pressure solenoid valve capable of effectively opening and closing a flow of a high-pressure fluid while having a small solenoid capacity.

Other objects and advantages of the present invention will become apparent to those skilled in the art from the following detailed description.

According to an embodiment of the present invention, there is provided an air conditioner comprising: a body having an input port and an output port and having a flow path connecting the input port and the output port; And a coil part which is coupled to the valve part and surrounds the outer periphery of the valve part and magnetizes the valve part to operate the valve part, wherein the valve element is in close contact with the flow path when closing the flow path, Pressure solenoid valve in which an internal flow path for allowing a part of the fluid flowing into the input port to flow to the valve packing is formed in the valve body.

In this case, the body may be further provided with a body packing which is inserted into the passage of the body part so as to be replaceable and has a hole, and the valve body opens and closes the hole to open and close the passage.

Meanwhile, the valve packing provided on the valve body may be made of any one of NBR (Nitrile-Butadiene Rubber), EPDM rubber (Ethylene Propylene Diene M-class rubber) and VITON rubber, and the body packing may be made of Teflon.

The valve body may include a first fitting groove formed at one end of the valve body and having one end of the valve packing inserted therein, a second fitting groove formed at one end of the valve body in the left-right direction, And an inner flow path formed from the side surface of the valve body to the second fitting groove.

Here, the inner flow path may include a first inner flow path formed in the horizontal direction from the side surface of the valve element, and a second inner flow path formed in the vertical direction from the second fitting groove of the valve element .

In addition, the valve packing may include a first fitting protrusion coupled to the first fitting groove and a second fitting protrusion coupled to the second fitting groove, and the second fitting protrusion may be formed with a circumferential groove have.

The high-pressure solenoid valve according to the embodiment of the present invention can effectively open and close the flow of high-pressure fluid even with a small solenoid capacity.

Specifically, a flow path through which the input fluid flows into the valve packing is formed in the valve body, so that even when pressure changes, the same pressure is applied to the valve packing, thereby increasing the sealing force.

In addition, since the body packing is replaceable, foreign bodies are introduced into the valve, so that even if the inner wall of the valve is damaged, only the body packing is replaced and the maintenance is easy.

The effects of the present invention will be clearly understood and understood by those skilled in the art, either through the specific details described below, or during the course of practicing the present invention.

1 is a perspective view of a high-pressure solenoid valve according to an embodiment of the present invention;
FIG. 2 is an exploded perspective view of a high-pressure solenoid valve according to the embodiment shown in FIG. 1; FIG.
3 is a cross-sectional view of a high-pressure solenoid valve according to the embodiment shown in Fig.
Fig. 4A is a sectional view of the valve body employed in the embodiment shown in Fig. 1, and Fig. 4B is a perspective view of the valve body.
FIG. 5A is a cross-sectional view of the valve packing employed in the embodiment shown in FIG. 1, and FIG. 5B is a perspective view of the valve packing.
6 to 8 are operation diagrams of a solenoid according to the embodiment shown in Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, It will be possible. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Hereinafter, a high-pressure solenoid valve according to an embodiment of the present invention will be described in detail with reference to the drawings. In the present specification, the same reference numerals are assigned to the same components in different embodiments, and the description thereof is replaced with the first explanation.

A high-pressure solenoid valve 100 according to an embodiment of the present invention includes a body portion 1, a valve portion 2, and a coil portion 3.

The body part 1 has an input port 11 and an output port 12 and a flow path connecting the input port 11 and the output port 12 is formed.

The valve portion 2 is provided with a valve body 24 which is engaged with the body portion 1 and opens or closes the flow path of the body portion 1.

The valve body 24 has a valve seal 244, and when the flow passage is closed, the valve packing 244 comes into close contact with the flow passage to close the valve. The valve body 24 is formed with an internal flow passage 243 through which a part of the fluid 10 flowing into the input port 11 flows to the valve packing 244.

The coil part 3 surrounds the outer periphery of the valve part 2 and is coupled to the valve part 2, and the valve part 2 is made of an electromagnet to operate the valve.

In the high-pressure solenoid valve 100 constructed as described above, a part of the fluid 10 flowing through the input port 11 at the time of closing the valve flows into the valve packing 244 through the internal flow passage 243 of the valve body 24 The pressure is applied to the valve seal 244 even when there is a change in the pressure of the input fluid 10 by pressing the valve seal 244 so that the sealing force is increased.

Hereinafter, the configuration of each part will be described in detail with reference to the drawings.

FIG. 1 is a perspective view of a high-pressure solenoid valve according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a high-pressure solenoid valve according to the embodiment shown in FIG. 1, Sectional view of the solenoid valve.

The body part (1) is a body part of the high-pressure solenoid valve (100) and has a passage formed therein. Wherein the body part 1 includes an input port 11, an output port 12, an inlet hole 13, a discharge hole 14 and a valve coupling hole 15, and further includes a body packing 16 can do.

Referring to FIG. 1, an input port 11 and an output port 12 are formed on both sides of the body 1. The input port 11 is a portion where the fluid 10 flows in and the output port 12 is a portion where the fluid 10 is discharged. A connecting member (not shown) may be coupled to the input port 11 and the output port 12.

On the other hand, an inlet hole 13 is formed from the input port 11 and an outlet hole 14 is formed from the output port 12. Further, a valve engagement hole 15 into which the valve portion 2 is inserted is formed from the upper side. The inlet hole 13 is connected to the discharge hole 14 through the end of the valve engagement hole 15. Thus, the connection structure of each of the holes forms a flow path.

A body packing 16 may be provided in the flow path of the body part 1 to be replaceable. Referring to the drawings, the body packing 16 is fitted to the end of the valve coupling hole 15 and a hole 161 is formed at a center thereof so that the fluid 10 can pass therethrough. The valve body 24 opens and closes the main orifice 17 by opening and closing the hole of the body packing 16. [

The body packing 16 may be made of Teflon. Teflon materials are excellent in heat resistance, non-tackiness, chemical resistance, and insulation stability. In addition, when the body packing 16 is damaged, the end of the hook-shaped body can be replaced by pulling the body packing 16 using a sharp tool and removing it by removing the force.

When the body packing 16 is provided to open and close the oil passage together with the valve body 24 and the body packing 16 can be replaced, foreign substances may flow into the valve body 16, Maintenance is easy because it can be used separately.

The valve portion 2 is coupled to the body portion 1 and has a valve body 24 to open or close the flow path of the body portion 1. [ Here, the valve portion 2 includes a housing 21, a core 22, a flange 23, and a valve body 24.

Referring to the drawings, a hole is formed in the housing 21 in the longitudinal direction, and a core 22, a flange 23, and a valve body 24 are sequentially inserted into the hole. A coil portion (3) is coupled to the outside of the housing (21). A plurality of holes 211 are formed at the end of the housing 21 so that the fluid 10 introduced into the input port 11 passes through the holes 211 and enters the valve portion 2.

The core 22 is hermetically coupled to the housing 21 and is electromagnetized by the coil part 3 to pull the flange 23 to open the pilot orifice 245.

A screw 221 is formed at one end of the core 22. The portion of the screw 221 passes through one end of the housing 21 and falls outside the housing 21. In this state, after inserting the coil part 3 outside the housing 21, the coil 22 is inserted into the screw 221 of the core 22 through the washer 222 and assembled with the nut 223, (3).

The flange 23 is coupled to the housing 21 and moves upward or downward by the operation of the core 22 to open and close the pilot orifice 245. Here, the flange 23 includes a flange body 231, a flange packing 232, and a connecting pin 233.

The flange 23 is inserted into the housing 21 and slightly spaced from the inside of the housing 21. That is, a slight gap is formed between the flange 23 and the housing 21. Between these gaps, the fluid 10 entering the valve portion 2 is filled through the holes 211 of the housing 21 on the input side. An elastic member 25 such as a spring is interposed between the flange 23 and the core 22. The flange 23 has an initial state in which the flange 23 is pushed down by the action of the elastic member 25 since the flange 23 is a movable configuration and the core 22 is fixed.

The flange packing 232 is coupled to one end of the flange body 231 and closes the pilot orifice 245 formed in the valve body 24 when the flange 23 is lowered, The pilot orifice 245 is opened. The flange packing 232 may be made of a rubber material or a synthetic resin material.

The connection pin 233 protrudes from the flange body 231 and is coupled to a hole formed in the valve body 24 so that the flange 23 and the valve body 24 are integrated. The hole 246 formed in the valve body 24 is elongated in the vertical direction so that the flange 23 can move up and down along the hole 246.

The valve body 24 serves to open and close the flow path. The valve body 24 is provided with a valve seal 244 and the valve seal 244 opens and closes a flow passage formed in the body portion 1. Here, the valve body 24 includes a first fitting groove 241, a second fitting groove 242, an internal flow passage 243, and a valve packing 244.

Referring to the drawing, the first fitting groove 241 is formed at one end of the valve body 24 in the vertical direction, and one end of the valve packing 244 is fitted. The second fitting groove 242 is formed laterally at one end of the valve body 24 and the other end of the valve packing 244 is fitted. The inner flow path 243 is formed from the side surface of the valve body 24 to the second fitting groove 242. The plurality of fitting grooves fix the packing firmly, and the input side pressure is transmitted to the valve packing 244 by the internal flow path 243, thereby sealing the flow path corresponding to the change of the input side pressure.

The inner flow path 243 includes a first inner flow path 243 formed in the horizontal direction from the side surface of the valve element 24 and a second inner flow path 243 formed in the vertical direction from the second fitting groove 242 of the valve element 24 2 inner flow path 243.

The valve seal 244 includes a first fitting protrusion 244a coupled to the first fitting groove 241 and a second fitting protrusion 244b coupled to the second fitting groove 242, The protrusion 244b may be provided with a groove 244c in the circumferential direction. The fluid 10 introduced through the inner flow path 243 can apply a closing pressure to the entire circumference of the valve packing 244 while flowing along the groove 244c.

The inclined surface of the valve packing 244 is inclined and the inclined surface of the body packing 16 is also inclined so that the inclined surface of the valve packing 244 abuts the inclined surface of the hole of the body packing 16 to close the valve. have. Such an inclined surface configuration enhances the adherence effect of the valve packing 244 and the body packing 16.

Meanwhile, the valve packing 244 provided on the valve body 24 may be made of any one of NBR (Nitrile-Butadiene Rubber), EPDM rubber (Ethylene Propylene Diene M-class rubber) and VITON rubber. If the valve packing 244 is made of the above material and the body packing 16 is made of the Teflon material, the sealing performance of the valve packing 244 and the body packing 16 can be improved.

The coil section 3 is coupled to the valve section 2 while surrounding the outer periphery of the valve section 2 and magnetizes the valve section 2 to operate the coil section 3.

More specifically, the coil part 3 is provided with a solenoid coil 31 for valve actuation. When a current flows through the coil 31, the core 22 of the valve part 2 is magnetized by an induced current.

The flange 23 is initially pushed downward by the action of a spring to close the pilot orifice 245. When the core 22 is magnetized, the flange 23 is moved toward the core 22 by the magnetic force. As a result, the flange 23 rises to open the pilot orifice 245 and the valve 2 is opened.

On the other hand, when the current is interrupted in the coil 31, the core 22 loses its magnetic force and the flange 23 is lowered again by the action of the spring to close the pilot orifice 245, Operation is performed.

The high-pressure solenoid valve 100 constructed as above operates as follows.

6 to 8 are operation diagrams of a high-pressure solenoid valve according to the embodiment shown in FIG. Referring to the drawing, the high-pressure solenoid valve as described above performs an opening / closing function while operating through an initial blocking step, a primary operating step, and a secondary operating step.

In the initial blocking step, as shown in FIG. 6, the fluid 10 having the pressure introduced from the input port 11 passes through the hole formed at the end of the housing 21 and is filled in the valve portion 2. In the initial state, the fluid 10 spreads evenly through the gap formed between the housing 21 and the flange 23 and the valve body 24.

On the other hand, the fluid 10 having pressure also flows into the inner flow path 243 at the same time and pressurizes the valve packing 244 to maintain the closed state more stably. The flange 23 is pushed against the spring 251 and the flange packing 232 is kept in equilibrium with the pilot orifice 245 of the valve body 24 closed.

Even if the pressure on the input side is changed, the same pressure is applied to the valve packing 244, so that the sealing force remains stable.

7, when power is applied to the solenoid coil 31 for valve actuation, the flange 23 is moved and contacts the fixed core 22, so that the pilot orifice 245 is moved to the primary Open. As a result, the pressure in the closed space is primarily reduced to change the internal pressure condition so that the valve body 24 is easily raised.

The secondary operating step is a step in which the inner pressure condition is changed as shown in Figure 8 so that the valve body 24 connected to the flange 23 rises and the gap between the body packing 16 and the valve packing 244 So that the main orifice 17 is fully opened. Thereby allowing the fluid 10 having the pressure input to the input port 11 to pass therethrough.

The interruption of the fluid proceeds in the reverse order of the above opening operation.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: Body part
11: input port 12: output port 13: inlet hole 14: exhaust hole
15: valve coupling hole 16: body packing 17: main orifice
2:
21: housing 211: hole
22: core 221: screw 222: washer 223: nut
23: Flanger
231: Flange body 232: Flange packing 233: Connecting pin
24:
241: first fitting groove 242: second fitting groove
243: inner flow path 243a: first inner flow path 243b:
244: valve packing 244a: first fitting protrusion 244b: second fitting protrusion 244c: groove
245: pilot orifice 246: hole
25: elastic member 251: spring
3: coil part
31: Solenoid coil
10: Fluid
100: High-pressure solenoid valve

Claims (6)

A body portion having an input port and an output port and having a flow path connecting the input port and the output port,
A valve unit coupled to the body unit and having a valve body that opens or closes a flow path of the body unit;
And a coil portion which is coupled to the valve portion while surrounding an outer periphery of the valve portion and magnetizes and operates the valve portion
Lt; / RTI >
Wherein the valve body has a valve seal which is in close contact with the flow passage when the flow passage is closed, and an inner flow passage is formed in the valve body so that a part of the fluid flowing into the input port flows into the valve packing,
Wherein the valve body comprises:
A first fitting groove formed at one end of the valve body in a vertical direction and having one end of the valve packing fitted therein,
A second fitting groove formed at one end of the valve body in the left-right direction and in which the other end of the valve packing is fitted,
And an inner flow path formed from the side surface of the valve body to the second fitting groove,
The valve pack includes a first fitting protrusion coupled to the first fitting groove and a second fitting protrusion coupled to the second fitting groove, wherein the second fitting protrusion includes a high pressure solenoid valve . The method of claim 1,
Wherein the valve body further comprises a body packing for opening and closing the oil passage by opening and closing the hole. 3. The method of claim 2,
Wherein the valve packing provided on the valve body is made of any one of NBR (Nitrile-Butadiene Rubber), EPDM rubber (Ethylene Propylene Diene M-class rubber) and VITON rubber, and the body packing is made of Teflon. delete The method of claim 1,
The internal passage
A first internal flow path formed in the horizontal direction from the side surface of the valve body,
And a second inner channel formed in a hole in a vertical direction from the second fitting groove of the valve body,
Pressure solenoid valve. delete

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