KR102274726B1 - Valve for supplying fluid - Google Patents

Abstract

The present invention relates to a flow control valve for supplying a fluid, comprising: a flow path unit having a first flow path unit guiding an introduced fluid to one direction, a second flow path unit communicating with the first flow path unit to be formed in a direction perpendicular to the first flow path unit, and a third flow path unit extending in a horizontal direction, being in disagreement with the first flow path unit, at the end of the second flow path unit to form an outflow direction of the fluid; and a solenoid disposed in a vertical direction on the second flow path unit and having a poppet that contacts the end of the second flow path unit in accordance with an inflow state of the fluid while moving up and down to limit the inflow of the fluid. The flow control valve for supplying the fluid in accordance with the present invention can prevent the rapid flow of the fluid flowing when the fluid is supplied, and control the flow rate of the supplied fluid by stabilizing pressure fluctuations that may occur along the flow path. In addition, since the size of the solenoid valve can be reduced, the flow control valve, if applied to an automobile fuel system, can reduce power consumption through weight reduction to improve fuel efficiency.

Description

Valve for supplying fluid

The present invention relates to a valve for controlling the flow rate for supplying a fluid, and more particularly, it is possible to control the flow rate of the supplied fluid by preventing the rapid flow of the fluid flowing when the fluid is supplied, and stabilizing the pressure fluctuation that may occur along the flow path. In addition, the present invention relates to a valve for controlling a flow rate for supplying a fluid that can improve fuel efficiency when applied to a fuel cell vehicle by reducing the size of the valve.

The fuel cell system is a kind of power generation system that directly converts chemical energy of fuel into electrical energy in a fuel cell stack without converting it into heat by combustion.

Among them, a fuel cell vehicle equipped with a fuel cell system generates electricity by supplying hydrogen used as a fuel to a fuel cell stack, and operates an electric motor with the electricity produced by the fuel cell stack to drive the vehicle.

In such a fuel cell system, high-purity hydrogen is supplied from a hydrogen storage tank to the anode of the fuel cell during operation, and air in the atmosphere is directly supplied to the cathode of the fuel cell using an air supply device such as an air blower. do.

Accordingly, the hydrogen supplied to the fuel cell stack is separated into hydrogen ions and electrons in the catalyst of the anode, the separated hydrogen ions are passed to the cathode through the polymer electrolyte membrane, and the oxygen supplied to the cathode is external. It combines with the electrons entering the cathode through the conductor to generate water and generate electrical energy.

In general, a fuel cell vehicle acquires driving power of the vehicle by driving a motor using electricity generated by reacting hydrogen and oxygen in a stack. For this, it is necessary to supply hydrogen with an appropriate pressure required by the stack.

In addition, since it is necessary to store a larger amount of hydrogen in order to increase the cruising distance of the fuel cell vehicle, a high-pressure hydrogen tank having a pressure of several hundred atmospheres is used as a hydrogen storage means in the fuel cell vehicle.

In addition, the number of points to measure leakage after manufacturing/maintenance increases, increasing airtightness test time and cost. In addition, in general, when fittings and tubing are used to construct a gas supply line, the connection portion increases, assembly using an automatic tool is difficult, and assembly torque management is difficult. Therefore, fuel cell vehicle manufacturers are making efforts to reduce the connection area/volume of the fuel processing system including valves and regulators.

On the other hand, since the volume and weight increase by applying one solenoid valve, the efficiency of the system to which the valve is applied is deteriorated, so a method for reducing the size and weight of the solenoid valve is required.

Japanese Patent No. 5458178 (2014.04.02. Hydrogen gas supply device for fuel cell system)

An object of the present invention is to prevent the rapid flow of the fluid flowing when the fluid is supplied, to adjust the flow rate of the supplied fluid by stabilizing the pressure fluctuation that may occur along the flow path, and to miniaturize the size of the valve for fuel cell vehicles, etc. To provide a valve for regulating a flow rate for supplying a fluid capable of improving fuel efficiency when applied.

The object of the present invention is not limited to the object mentioned above, and other objects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description.

In order to achieve the above object, the valve for controlling the flow rate for supplying fluid according to the first embodiment of the present invention communicates with the first flow path part for guiding the inflowing fluid in one direction and the first flow path part, so that the first flow path part a flow passage having a second flow passage formed in a perpendicular direction and a third flow passage extending in a horizontal direction crossing the first flow passage at a terminal end of the second flow passage portion to form an outflow direction of the fluid; and a solenoid disposed along the second flow path part and moving up and down and abutting against the end of the second flow path part according to the inflow state of the fluid to limit the inflow of the poppet and the poppet moving the poppet. It is formed in the shape of a long sphere having a first width and a third width different from the second width on the upper and lower sides of the second width as the center, and the poppet forms a gap with the inner peripheral surface of the second width by a predetermined distance to form a second flow path The movable body moving along the negative axial direction and the movable body extend in the horizontal direction wider than the width of the outlet of the second flow path at the end of the movable body, and are narrower than the width of the outlet of the second flow path at the end of the extended area to a predetermined area in the downward direction A plug formed in a tapered shape and a vortex prevention part extending downward from the lower end of the plug to prevent a vortex of the flowing fluid, the plug may be in contact with the taper-shaped outer circumferential surface and the width of the outlet of the second flow passage In this case, it is possible to block the movement of the fluid.

The second flow path part according to the second embodiment of the present invention further includes a fourth width extending downwardly narrower than the terminal end of the third width from the end of the third width, and the poppet has the end of the vortex prevention part having a fourth width. It may further include a fluid stabilizing unit extending further along the width, formed in a tapered shape at the starting point side of the third flow path at the end of the extended vortex prevention unit to stabilize the flowing fluid.

The third flow path according to the third embodiment of the present invention includes an additional extension extending in multiple stages in a downward direction from the bottom surface of the starting point side of the third flow path, and the poppet further extends downward from the end of the vortex prevention unit. It extends along the inner circumferential surface of the part, is expanded so as to abut against the inner circumferential surface of the additional extension part at the end, and further includes an extension part that is in close contact with at least one or more sealing parts, and is introduced into the third channel part by connecting the third channel part and the additional extension part It may further include a; feedback line for re-delivering a predetermined amount of fluid to the third flow path portion to adjust the pressure fluctuation.

The valve for regulating the flow rate for supplying fluid according to a fourth embodiment of the present invention includes a first flow path for guiding an incoming fluid in one direction and a second flow path in communication with the first flow path and formed in a direction perpendicular to the first flow path. a flow path part having a third flow path part extending in a horizontal direction crossing the first flow path part at the ends of the part and the second flow path part to form an outflow direction of the fluid; and a solenoid disposed in the vertical direction on the second flow path part and having a poppet configured to limit the inflow of the fluid by contacting the end of the second flow path part according to the inflow state of the fluid while moving up and down. It is formed in a long shape having a first width and a third width different from the second width on the upper and lower sides with the second width as the center, and the poppet has an outer peripheral surface of one side in contact with the upper inner peripheral surface of the second width. A movable body having one or more sealing bodies, the other end of which extends toward the inlet side of the third flow path, and the end of the movable body extends wider than the diameter of the movable body to block the movement of the fluid when it comes into contact with the width of the outlet of the second flow path It may further include; a feedback line having a blocking portion and connected to the second width from the third passage portion to transfer a predetermined amount of fluid flowing into the third passage portion to the second width to adjust the pressure fluctuation.

Here, the poppet may further include a vortex prevention unit extending in a vertical downward direction from the lower end of the blocking unit to prevent a vortex flow of the flowing fluid.

Here, the poppet may be formed such that a step is formed at a position connected to the feedback line, so that one end thereof extends to a first width.

Here, the blocking part may include a first through-hole through which the fluid flows in the same horizontal direction as the first flow path and a second through-hole formed vertically through the first through-hole.

In the first to fourth embodiments, the solenoid is formed as a solenoid for proportional control, is disposed to abut against the rear end of the poppet to control the movement of the poppet, and the poppet extends radially from the front end of the second width at the rear end A stopper may be further provided.

The valve for controlling the flow rate for supplying a fluid according to the present invention can prevent the rapid flow of the fluid flowing when the fluid is supplied, and regulate the flow rate of the supplied fluid by stabilizing pressure fluctuations that may occur along the flow path.

In addition, since the size of the solenoid valve can be reduced, when applied to an automobile fuel system, power consumption through weight reduction can be reduced, thereby improving fuel efficiency.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art from the following description.

1 is a view of a valve for controlling a flow rate for supplying a fluid according to a first embodiment of the present invention.
2 is a view of a valve for controlling a flow rate for supplying a fluid according to a second embodiment of the present invention.
3 is a view of a valve for controlling a flow rate for supplying a fluid according to a third embodiment of the present invention.
4 is a view of a valve for controlling a flow rate for supplying a fluid according to a fourth embodiment of the present invention.
5 to 7 are diagrams illustrating a state in which a solenoid is coupled to the upper end of a valve for controlling a flow rate for supplying a fluid according to a fifth embodiment of the present invention.
8 to 9 are views of a valve for controlling a flow rate for supplying a fluid according to a sixth embodiment of the present invention.
10 to 11 are views showing a state in which a solenoid is coupled to the upper end of the seventh fluid supply flow rate control valve.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this case, it should be noted that in the accompanying drawings, the same components are denoted by the same reference numerals as much as possible. In addition, detailed descriptions of well-known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some components are exaggerated, omitted, or schematically illustrated in the accompanying drawings.

In addition, throughout the specification, when a part "includes" a certain component, this means that other components may be further included, rather than excluding other components, unless otherwise stated. In addition, throughout the specification, "on" means to be located above or below the target part, and does not necessarily mean to be located above the gravitational direction.

First, the fluid to be described below may be formed of a fluid or a liquid, and the fluid may be formed of any one of hydrogen, liquid, water, and hydraulic oil, and in particular, is formed of hydrogen supplied to a stack of a fuel cell system to form a hydrogen vehicle. It can be used for the purpose of operating the electric motor of the, but the fluid is not limited thereto.

1 is a view of a valve for controlling a flow rate for supplying a fluid according to a first embodiment of the present invention.

Referring to FIG. 1 , the valve for controlling the flow rate for supplying fluid according to the first embodiment of the present invention includes a solenoid 130 having a flow path part 110 and a poppet 120 .

The flow path part 110 includes a first flow path part 111 , a second flow path part 112 , and a third flow path part 113 . The first flow path part 111 guides the fluid from the fluid tank (not shown) in the horizontal direction. The second flow path part 112 communicates with the first flow path part 111 and is formed in a direction perpendicular to the first flow path part 111 . The third flow path part 113 extends in a horizontal direction crossing the first flow path part 111 from the lower end of the second flow path part 112 to form an outflow direction of the fluid. The first flow path part 111 , the second flow path part 112 , and the third flow path part 113 are integrally formed to compactly form the flow path part, so that the effect of fuel saving can be expected through weight reduction.

The second flow path part 112 has a first width 1121 and a third width 1123 that are different from the second width 1122 on the upper and lower sides with respect to the second width 1122 located in the center. It may be formed in a shape. In this case, the third width 1123 may be formed to be relatively longer than the first width 1121 so that the blocking portion 122 of the poppet, which will be described later, is disposed.

The poppet 120 is provided in the solenoid 130 and is driven according to the operation of the solenoid 130, is disposed along the second flow path part 112, and moves up and down according to the inflow state of the fluid. 112) to limit the inflow of the fluid, and may include a movable body 121, a blocking part 122, and a vortex prevention part 123.

The movable body 121 forms a predetermined distance gap with the inner circumferential surface of the second width 1122 to move along the axial direction of the second flow path part 112 . A fluid may be introduced along the gap formed between the movable body 121 and the inner circumferential surface of the second width 1122 , and pressure may be applied to the poppet 120 to close the poppet 120 .

The blocking part 122 extends in the horizontal direction wider than the width of the outlet of the second flow path part 112 at the end of the movable body 121, and the outlet of the second flow path part 112 downwardly at the end of the extended area. It is formed in a tapered shape that becomes narrower to a predetermined area than the width of the , so that leakage of fluid can be prevented. For this reason, when the blocking part 122 formed in the tapered shape moves in the downward direction, when the outer circumferential surface contacts the width of the outlet of the second flow path part 112 , it is possible to block the movement of the fluid.

The vortex prevention part 123 extends downwardly from the lower end of the blocking part 122 . Therefore, it is possible to prevent the fluid moving along the side of the blocking portion 122 from being in contact with each other to form a vortex, thereby providing smooth fluid movement.

According to the present invention, when the poppet 120 moves upward through the solenoid, the fluid moves along the third flow path part 123 , and a gap formed between the blocking part 122 and the second flow path part 112 . As the fluid moves along the , pressure is applied to the poppet 120 and the process of closing the poppet 120 is repeated, so that the inflow of the fluid can be controlled, so that the fluid can be stably and precisely.

2 is a view of a valve for controlling a flow rate for supplying a fluid according to a second embodiment of the present invention.

Referring to FIG. 2 , the second flow path part 122 of the valve for controlling the flow rate for supplying fluid according to the second embodiment of the present invention is from the end of the third width 1123 to the end of the third width 1123 . It may further include a fourth width 1124 that is narrowly formed and extended in the downward direction. The fourth width 1124 may be formed to be the same as the outlet width of the second flow path part 122 of the first embodiment. And, in the poppet 120, the end of the vortex prevention part 123 further extends along the fourth width 1124, and at the end of the extended vortex prevention part 123 at the starting point of the third flow path part 113 It may further include a fluid stabilizing unit 124 formed in a tapered shape to stabilize the fluid pressure fluctuation of the flow path and provide stabilization of the dynamic characteristics of the valve.

When describing the fluid stabilization unit 124 in more detail, the fluid stabilization unit 124 includes a first inclined part 1241 , a first vertical extension part 1242 , a second inclined part 1243 , and a second vertical extension part. (1244). The first inclined portion 1241 is formed in a tapered shape of the upper and lower light. The vertical extension portion 1242 is formed to extend a predetermined distance downward from the end of the first inclined portion 1241 . In addition, the second inclined portion 1242 is formed in the opposite direction to the first inclined portion 1241 at the end of the vertical extension portion 1242 in a tapered shape of the upper and lower narrows. In this case, the inclination of the second inclined portion 1242 may be formed more gently than that of the first inclined portion 1241 to more stably induce the fluid moving in the downward direction.

The second vertical extension portion 1244 extends in the same direction as the first vertical extension portion 1242 at the end of the second inclined portion 1242 , and is relatively smaller than the extended length of the first vertical extension portion 1242 . is extended In this way, the fluid stabilization unit 124 prevents the rapid flow of the flowing fluid and removes noise that may occur according to the fluid movement by forming a long, stabilizing fluid pressure fluctuation by stably and constantly supplying the fluid, The dynamic characteristics of the valve can be stabilized.

3 is a view of a valve for controlling a flow rate for supplying a fluid according to a third embodiment of the present invention.

Referring to FIG. 3 , the valve for controlling the flow rate for supplying fluid according to the third embodiment of the present invention may further include an additional extension 1131 , a feedback line 1132 , and an extension 125 . For overlapping reference numbers, refer to FIGS. 1 to 2 .

The additional extension part 1131 is extended in multiple stages along the downward direction from the bottom surface of the starting point side of the third flow path part 113 . At this time, the additional extension portion 1131 may be formed in a multi-stage of two stages downward.

The extension part 125 extends downward along the inner peripheral surface of the additional extension part 1131 at the end of the vortex prevention part 123 , and is drilled so as to abut against the inner peripheral surface of the additional extension part 1131 . The expanded part 125 may include at least one sealing 1134 on the outer circumferential surface to increase adhesion to the inner circumferential surface, thereby effectively preventing fluid leakage.

The feedback line 1132 connects the third flow path part 113 and the additionally extended part 1131 to re-deliver a predetermined amount of fluid flowing into the third flow path part 113 to the third flow path part 113 to flow path. By stabilizing the negative pressure fluctuation, it is possible to stably transfer the fluid.

4 is a view of a valve for controlling a flow rate for supplying a fluid according to a fourth embodiment of the present invention.

Referring to FIG. 4 , the fluid supply valve according to the fourth embodiment of the present invention includes a flow path portion 210 and a solenoid 230 having a poppet 220 .

The flow path part 210 includes a first flow path part 211 , a second flow path part 212 , and a third flow path part 213 . The first flow path part 211 guides the fluid from the fluid tank (not shown) in the horizontal direction. The second flow path part 212 communicates with the first flow path part 211 and is formed in a direction perpendicular to the first flow path part 211 . The third flow path part 213 extends in a horizontal direction crossing the first flow path part 211 at the end of the second flow path part 212 to form an outflow direction of the fluid.

The second flow path part 212 has a first width 2121 and a third width 2123 different from the second width 2122 on the upper side and the lower side, respectively, with respect to the second width 2122 located in the center. It may be formed in a long ball shape. In this case, the third width 2123 may be formed relatively wider than the first width 2121 so that the blocking portion 222 of the poppet 220, which will be described later, is disposed.

The poppet 220 controls the inflow of a fluid while moving vertically and vertically, and may include a movable body 221 , a blocking part 222 , and a vortex prevention part 223 .

The movable body 221 is provided with at least one sealing body 2211 on the outer circumferential surface of one side of the upper end, and is disposed in close contact with the upper inner circumferential surface of the second width 2122 . The blocking part 222 blocks the movement of the fluid when it extends wider than the diameter of the movable body 221 at the end of the movable body 221 and comes in contact with the width of the outlet of the second flow path part 212 . To this end, the blocking portion 222 is formed in a tapered shape along the downward direction in the expanded state. The vortex prevention part 223 extends downward from the lower end of the blocking part 222 and prevents the fluid moving along the side of the blocking part 222 from gathering in the center, thereby preventing the formation of a vortex, thereby providing smooth fluid movement. have.

A feedback line 214 connected from the third flow passage 213 to the second width 2122 is provided. The feedback line 214 prevents noise by controlling pressure fluctuations by transferring a predetermined amount of fluid among the fluids moving along the third flow path 213 to the second width 2122 along the feedback line 214 . Thus, it is possible to prevent pressure fluctuations by ensuring that the fluid is constantly supplied.

The upper end of the second width 2122 is multi-staged, and the lower side has a relatively wide width compared to the upper side. In addition, the upper end of the poppet 220 is formed in multi-stage to correspond to the multi-stage shape of the second width 2122 . At this time, the upper end of the poppet 220 is formed in multiple stages at a position spaced a predetermined distance downward from the upper end of the stepped second width 2122 so as to allow the inflow of the fluid connected from the feedback line 214 . In addition, at least one sealing body may be provided on the outer peripheral surface of the multi-stage poppet 220 to prevent air from flowing along the abutting surface.

Accordingly, the fluid transferred to the feedback line 214 may be transferred along the spaced apart space. In addition, the poppet 220 penetrates vertically to the first through hole 2221 and the first through hole 2221 through which the fluid flows into the blocking portion 222 in the same horizontal direction as the first flow passage 211 upward. A formed second through hole 2222 may be provided. A plurality of first through holes 2221 may be formed in a radial direction along a radial direction.

5 to 7 are views illustrating a state in which a solenoid is coupled to the upper end of a valve for controlling a flow rate for supplying a fluid according to a fifth embodiment of the present invention.

5 to 7, the solenoid 300 in the valve for controlling the flow rate for supplying fluid according to the fifth embodiment of the present invention is different from the above-described embodiments in that the poppet 120 is the solenoid 130 and each other. can be driven independently. And, the solenoid 300 may be formed as a solenoid for proportional control.

The ends of the solenoid 300 are disposed to abut against the rear ends of the poppets 120 and 220 to control the pressure of the chamber of the solenoid 300 of the poppets 120 and 220 . In this case, the poppets 120 and 220 may further include a stopper 126 extending radially so that movement is restricted from the front end of the second width 1122 to the third width 1123 at the rear end.

In this way, when the poppet 120 and the solenoid 130 are formed in two stages independently of each other, the size of the solenoid 130 can be reduced, so that the size of the overall system can be reduced. Therefore, when applied to a vehicle fuel cell system, there is a feature that can improve fuel efficiency by reducing power consumption through a reduction in solenoid weight.

8 to 9 are views of a fluid supply valve according to a sixth embodiment of the present invention.

8 to 9 , in the fluid supply valve according to the sixth embodiment of the present invention, the positions of the first flow path part 111 and the third flow path part 113 are swapped.

That is, in the valve for supplying fluid according to another embodiment of the present invention, a first flow path part 411 is formed on the lower side, and a second flow path part 412 is formed in a vertical direction to the first flow path part 411, A third flow path part 413 extending in a direction crossing the first flow path part 411 may be formed at the end of the second flow path part 412 to transport the flowing fluid. That is, the inlet of the fluid is formed at the lower side, and the discharge port is formed at the upper side. Although not shown in the present invention, the solenoid may be formed to include a poppet.

10 to 11 are views illustrating a state in which a solenoid is coupled to the upper end of a valve for controlling a flow rate for supplying a fluid, unlike FIGS. 8 to 9 .

10 to 11 , the valve for controlling the flow rate for supplying the fluid of the present invention may be formed in which the solenoid is separated from the poppet, unlike the above-described FIGS. 8 to 9 .

In this case, unlike the above, a solenoid 500 capable of additionally controlling the opening/closing state of the poppet 420 may be disposed at the rear end of the poppet 420 . According to the present invention, the poppet 420 can control the poppet 420 without a stopper 126 extending in the radial direction so that movement is restricted from the front end of the second width at the rear end, and the overall size can be reduced. When applied to a fuel system, there is a feature that can improve fuel efficiency by reducing power consumption.

In this way, the valve for controlling the flow rate for supplying the fluid according to the present invention can prevent the rapid flow of the fluid flowing when the fluid is supplied, and regulate the flow rate of the supplied fluid by stabilizing pressure fluctuations that may occur along the flow path. In addition, since the size of the solenoid valve can be reduced, when applied to an automobile fuel system, power consumption through weight reduction can be reduced, thereby improving fuel efficiency.

On the other hand, the embodiments of the present invention disclosed in the present specification and drawings are only presented as specific examples to easily explain the technical contents of the present invention and help the understanding of the present invention, and are not intended to limit the scope of the present invention. It will be apparent to those of ordinary skill in the art to which the present invention pertains that other modifications based on the technical spirit of the present invention can be implemented in addition to the embodiments disclosed herein.

110, 210: flow path part 111, 211: first flow path part
112, 212: second flow path part 113, 212: third flow path part
120, 220: poppet 122, 222: plug
123, 223: vortex prevention part 124, 224: fluid stabilization part
1132, 214: feedback line 130, 230, 300, 500: solenoid

Claims (9)

A first flow path part for guiding the inflowing fluid in one direction, a second flow path part communicating with the first flow path part and formed in a direction perpendicular to the first flow path part, and the first flow path part at the end of the second flow path part a flow passage portion extending in a horizontal direction alternated with the flow passage portion having a third passage portion in which the outflow direction of the fluid is formed; and
and a solenoid disposed along the second flow path part and moving up and down and contacting the end of the second flow path part according to the inflow state of the fluid to limit the flow of the fluid to move the poppet; and
The second flow path part,
It is formed in a long shape having a first width and a third width different from the second width on the upper and lower sides about the second width located in the center, and at the end of the third width, at the end of the third width It includes a fourth width narrowly extending in the downward direction,
The poppet is
a movable body moving along the axial direction of the second flow path by forming a predetermined distance gap with the inner circumferential surface of the second width, and horizontally extending wider than the width of the outlet of the second flow path at the end of the movable body, the expansion A blocking portion formed in a tapered shape that is narrower to a predetermined area than the width of the outlet of the second flow path in the downward direction from the end of the closed area, and a vortex prevention that extends downward from the lower end of the blocking portion to prevent vortex flow of the flowing fluid to have wealth,
The end of the vortex prevention part is further extended along the fourth width, and a fluid stabilizing part is formed in a tapered shape from the end of the extended vortex prevention part at the starting point side of the third flow path part to stabilize the flowing fluid further comprising,
The blocking part,
When the tapered outer peripheral surface and the width of the outlet of the second flow passage come into contact, the valve for controlling the flow rate for supplying fluid, characterized in that it blocks the movement of the fluid.
delete A first flow path part for guiding the inflowing fluid in one direction, a second flow path part communicating with the first flow path part and formed in a direction perpendicular to the first flow path part, and the first flow path part at the end of the second flow path part a flow passage portion extending in a horizontal direction alternated with the flow passage portion having a third passage portion in which the outflow direction of the fluid is formed; and
and a solenoid disposed along the second flow path part and moving up and down and contacting the end of the second flow path part according to the inflow state of the fluid to limit the flow of the fluid to move the poppet; and
The second flow path part,
It is formed in a janggu shape having a first width and a third width different from the second width on the upper and lower sides around the second width located in the center,
The third flow path part,
Including an additional extension extending in multiple stages in a downward direction from the bottom surface of the starting point side of the third flow path part,
The poppet is
a movable body moving along the axial direction of the second flow path by forming a predetermined distance gap with the inner circumferential surface of the second width, and horizontally extending wider than the width of the outlet of the second flow path at the end of the movable body, the expansion A blocking portion formed in a tapered shape that is narrower to a predetermined area than the width of the outlet of the second flow path in the downward direction from the end of the closed area, and a vortex prevention that extends downward from the lower end of the blocking portion to prevent vortex flow of the flowing fluid to have wealth,
It extends along the inner circumferential surface of the additional extension in the downward direction from the end of the vortex prevention portion, and is expanded so as to contact the inner circumferential surface of the additional extension at the end, and further includes an extension that is in close contact with at least one sealing, and the third It further includes a feedback line connecting the flow path part and the additional extension part to re-deliver a predetermined amount of fluid flowing into the third flow path part to the third flow path part to adjust the pressure fluctuation,
The blocking part,
When the tapered outer peripheral surface and the width of the outlet of the second flow passage come into contact, the valve for controlling the flow rate for supplying fluid, characterized in that it blocks the movement of the fluid.
delete delete delete delete 4. The method of claim 1 or 3,
The solenoid is
It is formed as a solenoid for proportional control and is disposed to abut against the rear end of the poppet to control the movement of the poppet,
The poppet is
Flow rate control valve for fluid supply, characterized in that it further comprises a stopper extending in the radial direction from the front end of the second width at the rear end.
4. The method of claim 1 or 3,
The fluid is
A valve for controlling the flow rate for supplying a fluid, characterized in that any one of hydrogen, liquid, water or hydraulic oil.

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