KR20200050330A - Pressure regulator using auxiliary pressure - Google Patents

Abstract

The present invention comprises: a housing in which an inlet through which fluid is introduced is formed at one side, and a valve seat in fluid communication is disposed; a valve member which is movably installed at the valve seat disposed at the housing, and is moved by the pressure of the fluid generated when the fluid is introduced into the valve seat to open and close the valve seat; a cap which is coupled to the housing, and in which an outlet is disposed to discharge the fluid introduced through the inlet to the outside; and an elastic body which is built in the cap to elastically pressurize the valve member in the direction in which the valve seat is arranged. Therefore, the fluid which has run through the valve seat to pressurize the valve member is introduced into a storage space formed at the side portion of the valve seat to generate an auxiliary pressure.

Description

Pressure regulator using auxiliary pressure {PRESSURE REGULATOR USING AUXILIARY PRESSURE}

The present invention relates to a pressure regulator using an auxiliary pressure, and more particularly, to a pressure regulator using an auxiliary pressure provided to a fuel return tube or a fuel tank, and configured to adjust the pressure of the fuel system.

In general, the pressure regulator is used in various fields, for example, it can be applied to the fuel system of a vehicle.

The pressure regulator applied to the vehicle's fuel system controls the pressure of the fuel supply line while operating according to the pressure of the fuel. For example, it is provided in the fuel return pipe and the fuel tank to return fuel to the fuel tank when the fuel is above a certain pressure. The fuel supply line of the fuel system can maintain a constant pressure.

Such a pressure regulator is disclosed in Patent No. 10-0958711 filed by the applicant of the present invention. Such a conventional pressure regulator, as shown in the patent document drawing, when the fluid flows into the inlet 52a of the housing 50, to the disk member 70 made of a metal disc spring by a snap ring 60b. As the fixed disc-shaped valve member 60 is raised by the pressure of the fluid, the valve seat 52 can be opened. Therefore, the fluid may be discharged through the outlet 90a after entering the inside of the cap 90 as the valve member 60 is raised.

On the other hand, when the pressure of the fluid drop as the disk member 70 is elastically supported by the elastic body 80, the valve member 60 is lowered by the pressing force of the elastic body 80, and accordingly the valve member 60 is a valve The seat 52 can be closed again.

Here, the above-described disk member 70 is formed with a fuel hole (72c) through which the fluid is communicated. Therefore, the fluid flowing into the cap 90 can be smoothly discharged through the fuel hole 72c to the outlet hole 90a of the cap 90.

Such a conventional pressure regulator uses the disk member 70 made of a metal disc spring in place of an expensive diaphragm, and thus has an advantage in that manufacturing cost can be greatly reduced and durability can be improved.

However, in the conventional pressure regulator, when the valve seat 52 is opened by the valve member 60, a pressure fluctuation occurs in the fuel supply line according to the flow rate of the fluid discharged to the cap 90, and the valve member Since the opening amount of (60) is determined by the lower area of the valve member (60) in contact with the fluid, it is limited to control the pressure fluctuation of the fuel supply line by sensitively adjusting the opening amount of the valve member (60). There is.

Accordingly, the present applicant has proposed the present invention to solve the above problems, and related prior art documents include a 'pressure regulator for a vehicle's fuel system' of Korean Patent No. 10-0958711.

The present invention is to solve the above problems, as the flow rate of the fluid passing through the gap formed between the valve member and the valve seat is increased so as to form an auxiliary pressure to move the valve member variably. The aim is to provide a configured pressure regulator.

In order to achieve the above object, the technical idea of the present invention is that the inlet through which the fluid flows is formed on one side, and the inside is provided with a valve seat for communicating fluid, and a valve seat provided on the housing is movably installed. The valve member opens and closes the valve seat while being moved by the pressure of the fluid generated as the fluid flows into the valve seat, and is provided with an outlet through which the fluid flowing from the inlet is discharged to the outside. A cap and an elastic body that elastically presses the valve member in a direction in which the valve seat is disposed in a state embedded in the cap, and the fluid flowing through the valve seat and pressing the valve member is formed on a side of the valve seat. Pressure control using auxiliary pressure, characterized in that it forms an auxiliary pressure by flowing into the storage space It is achieved by the flag.

Here, it is preferable that the valve seat further includes a sealer in close contact with the bottom of the valve member on an upper end facing the valve member.

In addition, it is operated by the auxiliary pressure generated in the side of the valve seat as the fluid flows into the side of the valve seat by the opening of the valve seat, and is connected to the valve member to be interlocked so that the auxiliary pressure is It is preferable to further include an auxiliary pressure providing member provided to the elastic body.

In addition, the auxiliary pressure providing member includes a coupling hole connected to the valve member, and a plurality of supply holes for supplying fluid to the inside of the cap, shielding the side of the valve member seated on the valve seat, and It is preferable to make the position of the valve member variable while being raised under pressure by a fluid diffused to the side of the valve seat.

In addition, it is preferable that the plurality of supply holes are provided at least four at a predetermined interval from each other along the circumferential direction of the auxiliary pressure providing member in an area disposed between the center portion and the edge of the auxiliary pressure providing member.

In addition, the diameter of the supply hole is preferably 1.2mm to 2mm when the plurality of supply holes is provided with six in the auxiliary pressure providing member.

In addition, it is preferable that the plane area of the plurality of supply holes is smaller than that of the hollow portion formed in the valve seat.

In addition, the pressure of the fluid applied to the elastic body is preferably the pressure of the fluid flowing through the valve seat to press the bottom of the valve member and the auxiliary pressure to press the bottom of the auxiliary pressure providing member.

Further, it is preferable that the fluid flowing through the valve seat flows into the inside of the cap through a space formed between the circumferential surface of the valve member and the inner surface of the housing or the cap.

In addition, the valve member is firstly pressurized by the pressure of the fluid flowing through the valve seat, and the bottom part is primarily pressurized by the auxiliary pressure generated as the fluid diffuses to the side of the valve seat. It is preferred that the circumference is pressurized.

In addition, the valve member is a bottom surface placed on top of the valve seat, a first inclined surface formed to be inclined upward in the radial direction around the bottom surface, and extended upward inclined in a radial direction around the top of the first inclined surface. , A second inclined surface having an inclined angle smaller than the inclined angle of the first inclined surface, a vertical surface extending vertically from the upper circumference of the second inclined surface, and a horizontal direction from the upper circumferential surface of the vertical surface toward the center of the bottom surface It is preferable to include a first horizontal plane extending from the third horizontally extending downwardly inclined downward from the inner side of the first horizontal surface, and a second horizontal surface connecting the lower circumference of the third horizontal surface.

In addition, the lower end of the elastic body is preferably inserted and seated in a space defined by the third inclined surface and the second horizontal surface.

In addition, the pressure of the fluid applied to the elastic body is preferably the pressure of the fluid flowing through the valve seat to press the bottom surface of the valve member and the auxiliary pressure to press the second inclined surface of the valve member.

In addition, it is preferable that the flat area of the space formed between the vertical surface of the valve member and the inner surface of the housing or the cap is smaller than the flat area of the hollow portion formed in the valve seat.

On the other hand, according to another technical idea of the present invention for achieving the above object, the inlet through which the fluid flows is formed on one side and the housing is provided with a valve seat for fluid communication therein, coupled to the housing and introduced from the inlet It is provided between a cap provided with an outlet for discharging fluid to the outside, an elastic body elastically pressurized in the direction in which the valve seat is disposed in the state embedded in the cap, and the housing and the valve seat, and fluid flows into the valve seat. The valve seat is opened and closed by the pressure of the fluid generated as it becomes, and the elastic body is pressed by the auxiliary pressure generated at the side of the valve seat as the fluid flows into the side of the valve seat by opening the valve seat. In the pressure regulator using an auxiliary pressure, characterized in that it comprises an auxiliary pressure providing member It is achieved.

Here, the auxiliary pressure providing member is preferably formed with a plurality of supply holes for supplying fluid to the interior of the cap.

In addition, the supply hole is preferably formed at regular intervals on the auxiliary pressure providing member around the axis of the elastic body.

In addition, it is preferable that the auxiliary pressure providing member further includes an elastic sheet that protrudes toward the inner circumferential surface of the elastic body and is placed at the end of the elastic body.

In addition, the elastic sheet is preferably a portion of the auxiliary pressure providing member is formed by bending toward at least one of the inner peripheral surface or the outer peripheral surface of the elastic body.

In addition, it is preferable that the auxiliary pressure providing member further includes a guide irregularity projecting in an inclined state toward an axis of the valve seat to guide fluid introduced through the valve seat to the side of the valve seat.

In addition, the valve seat preferably further comprises a sealer in close contact with the bottom of the auxiliary pressure providing member on the upper end facing the auxiliary pressure providing member.

The pressure regulator using the auxiliary pressure according to an embodiment of the present invention has a structure capable of increasing the amount of opening of the valve member by forming the auxiliary pressure according to an increase in the flow rate of the fluid flowing through the valve seat, thereby increasing the supply pressure. The pressure of the fuel supply line is kept constant without increasing, so that the fuel system operates stably.

In addition, the pressure regulator using the auxiliary pressure according to an embodiment of the present invention, so that the pressure state of the fuel supply line is kept constant, it is possible to prevent damage to the fuel system due to overpressure generated in the fuel system.

1 is a cross-sectional view of a pressure regulator using an auxiliary pressure according to an embodiment of the present invention.
Figure 2 is a sectional view showing a state in which the valve member of the pressure regulator shown in Figure 1 is raised.
3 is a plan view of a diaphragm according to an embodiment of the present invention.
Figure 4 is an experimental graph showing the change in the auxiliary pressure formed in the storage space according to the diameter of the plurality of supply holes.
5 is an experimental graph showing the pressure gradient of the fuel supply line according to the diameter of a plurality of supply holes.
6 is a cross-sectional view of a pressure regulator using an auxiliary pressure according to another embodiment of the present invention.
7 is a sectional view showing a state in which the valve member of the pressure regulator shown in FIG. 6 is raised.
8 is a perspective view of a valve member according to another embodiment of the present invention.
9 is a cross-sectional view of a valve member according to another embodiment of the present invention.
10 is a cross-sectional view showing another embodiment of a valve seat according to the present invention.
11 is a cross-sectional view showing another embodiment of the pressure regulator according to the present invention.

Advantages and features of the present invention, and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only the present embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains. It is provided to completely inform the person having the scope of the invention, and the present invention is only defined by the scope of the claims.

Hereinafter, a pressure regulator using an auxiliary pressure according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5. In describing the present invention, detailed descriptions of related known functions or configurations are omitted so as not to obscure the subject matter of the invention.

1 and 2, the pressure regulator 100 using the auxiliary pressure according to an embodiment of the present invention, the inlet port 110a through which the fluid flows is formed on one side and the valve seat through which the fluid communicates The housing 110 provided with (111) and the valve seat 111 provided in the housing 110 are movably installed, and the pressure P1 of the fluid generated as the fluid flows into the valve seat 111 The cap 130 and the cap (130) provided with the valve member (120) for opening and closing the valve seat (111) and the housing (110) and having an outlet (130a) for discharging fluid flowing from the inlet (110a) to the outside while being moved It is composed of an elastic body 140 that elastically presses the valve member 120 in the direction in which the valve seat 111 is disposed in a state embedded in 130).

In more detail, the housing 110 is formed in a concave container shape, and an inlet 110a through which fluid is introduced is formed on one side. At this time, the inlet 110a is preferably formed at the bottom of the housing 110 to be parallel to the longitudinal direction of the housing 110.

In addition, the valve seat 111 provided in the housing 110 may have a cylindrical shape, and is manufactured separately from the housing 110 and mounted on the lower end of the housing 110.

The valve member 120 is disposed on the top of the valve seat 111 to block the open top of the hollow portion 111a formed in the valve seat 111. Here, the hollow portion 111a may be referred to as a passage through which fluid can flow.

The valve member 120 may be made of a metal material having excellent durability, chemical resistance and corrosion resistance, and may also be made of a non-metal such as rubber or ceramic.

In addition, the valve seat 111 is provided with a sealing 112 in close contact with the bottom of the valve member 120 on the upper end facing the valve member as shown in FIG. The sealing 112 is made of a material that exhibits an elastic restoring force, and when the valve seat 111 and the valve member 120 are closed, the flow of fluid is blocked in a more airtight state to prevent fluid leakage and from this, Flow can be precisely controlled.

On the other hand, the cap 130 is formed with an outlet 130a for discharging the fluid discharged from the hollow portion 111a of the valve seat 111 to the outside. The outlet 130a may be provided in a plurality in the upper center of the cap 130 and its surroundings.

Accordingly, the fluid discharged from the valve seat 111 and flowing into the inner space of the cap 130 can be smoothly discharged to the outside through the outlet 130a.

The elastic body 140 may be composed of a coil spring, and may be disposed in an inner space formed by the cap 130. In addition, the lower end of the elastic body 140 may be seated on the upper portion of the valve member 120 and the lower end of the valve member 120 may be seated on the center of the ceiling surface of the cap 130. Accordingly, the elastic body 140 elastically presses the upper portion of the valve member 120 vertically.

On the other hand, the fluid that pressurized the valve member 120 by flowing through the hollow portion 111a of the valve seat 111 flows into the storage space S formed on the side of the valve seat 111, and the valve member 120 and The auxiliary pressure P2 may be formed in the storage space S by being blocked by the auxiliary pressure providing member 150 that is interlocked.

In other words, the auxiliary pressure providing member 150 may be elastically deformed when the bottom portion is pressurized by the auxiliary pressure P2 formed in the storage space S, and accordingly, a thin film-shaped metal material or plastic synthetic resin having elastic resilience. It can be made of ash and can have the shape of a disc as a whole.

In addition, the auxiliary pressure providing member 150 is configured to adjust the opening amount of the valve seat 111 by varying the position of the valve member 120 moved by the pressure P1 of the fluid, and accurately, the valve seat 111 It can be said to be a configuration that is deformed by the auxiliary pressure P2 formed on the side of) to press the elastic body 140.

For reference, the auxiliary pressure providing member 150, as shown in Figure 3, is disposed between the elastic body 140 and the valve member 120, the rim is fixed to the coupling portion of the housing 110 and the cap 130 And the central portion may be implemented as a diaphragm connected to the valve member 120.

The auxiliary pressure providing member 150 has a plurality of supply holes (151a) for transferring the fluid flowing into the hollow portion (111a) of the valve seat 111 to the interior space of the cap 130, the auxiliary pressure providing member 150 It is prepared at regular intervals from each other along the circumferential direction of.

In other words, at least four of the plurality of supply holes 151a are spaced apart from each other along the circumferential direction of the auxiliary pressure providing member 150 in an area disposed between the center portion and the edge of the auxiliary pressure providing member 150. It can be provided as above.

In addition, a coupling hole 151b into which the upper portion of the valve member 120 is inserted is provided in the central portion of the auxiliary pressure providing member 150.

The auxiliary pressure providing member 150 configured as above can shield the side of the valve member 120 seated on the valve seat 111 in cooperation with the housing 110, and also diffuse to the side of the valve seat 111. It has a configuration capable of pressing the lower end of the elastic body 140 upward while being elastically deformed by the auxiliary pressure (P2) formed by the fluid.

In other words, the fluid flowing through the hollow portion 111a of the valve seat 111 and pressurizing the bottom surface of the valve member 120 includes the bottom surface of the auxiliary pressure providing member 150 and the upper inner surface of the housing 110 and the valve. It can be said to be introduced into the storage space (S) divided by the upper circumferential surface of the sheet 111, and the auxiliary pressure (P2) to press the bottom of the auxiliary pressure providing member 150 as filling the storage space (S) It can be said to form.

In more detail, when the fluid flows into the hollow portion 111a of the valve seat 111, the fluid presses the bottom surface of the valve member 120 to raise the valve member 120 upward.

At this time, a space is formed between the bottom of the valve member 120 and the top of the valve seat 111, and fluid flows into the storage space S through the space.

In this state, when the flow rate of the fluid flowing into the storage space (S) increases, a new flow rate is added to the flow rate of the fluid stored in the storage space (S), thereby further filling the storage space (S). It can be said that the auxiliary pressure P2 that presses the bottom of the auxiliary pressure providing member 150 is formed in the storage space S.

Then, the auxiliary pressure providing member 150 compresses the elastic body 140 by pressing the lower end of the elastic body 140 as shown in FIG. 2.

Here, the pressure by the fluid applied to the elastic body 140 is substantially the pressure of the fluid (P1) and the auxiliary pressure providing member 150 through the valve seat 111 to press the bottom surface of the valve member 120 It can be said to be the sum of the auxiliary pressure (P2) to pressurize.

In addition, the diameter of the plurality of supply holes (151a) formed in the auxiliary pressure providing member 150, the auxiliary pressure (P2) by the fluid is formed in the storage space (S) to press the bottom of the auxiliary pressure providing member 150 It is desirable to have a diameter that allows the fluid to pass thereafter.

That is, the auxiliary pressure P may be formed in the storage space S only when the plurality of supply holes 151a are provided in the auxiliary pressure providing member 150 with the optimum diameter.

If, if the diameter of the supply hole (151a) is provided in the auxiliary pressure providing member 150 without having an optimal diameter, the auxiliary pressure (P2) to press the bottom of the auxiliary pressure providing member 150 in the storage space (S) This cannot be formed, and accordingly, the fluid flowing through the valve seat 111 is immediately discharged into the inside of the cap 130 through a plurality of supply holes 151a.

Therefore, as shown in FIGS. 4 and 5, when a plurality of supply holes 151a are provided in the auxiliary pressure providing member 150, the diameter of each of the supply holes 151a is 1.2 mm to 2 mm. desirable.

That is, in Fig. 4, when the diameter of each of the supply holes 151a is set to 1.2 mm, 1.4 mm, 1.6 mm, 1, 8 mm, and 2.0 mm, respectively, the pressure according to the increase in the flow velocity in the storage space S An experimental graph showing the change is shown.

As shown in the graph line (f) shown in FIG. 4, the supply hole formed in the pressure regulator mentioned in the prior art immediately flows through the valve seat 111 to immediately cap the fluid flowing into the storage space (S) ( Since the main purpose is to guide the interior of 113), it can be confirmed that the increase in pressure due to the increase in the fluid flowing into the storage space S is not large.

On the other hand, as shown in the graph line (a) to graph line (e) shown in Figure 4, when the diameter of the supply hole (151a) is set to 1.2mm ~ 2.0mm flow into the storage space (S) It can be seen that the increase in pressure is relatively larger than the pressure regulator in the prior art according to the increase in the fluid.

Among them, when the diameter of the supply hole (151a) is the smallest 1.2mm, it can be seen that the increase in pressure according to the increase of the fluid flowing into the storage space (S) is the largest, and then the supply hole (151a) When the diameter is set to 1.4 mm, it can be seen that the increase in pressure according to the increase of the fluid flowing into the storage space S is the second largest.

And, when the diameter of the supply hole (151a) is set to 2.0mm or more, although not shown in the experimental graph of Figure 4, the storage space (S) in a form close to the graph line (f) showing the pressure increase width of the prior art Can be expected to generate pressure.

Therefore, the diameter of the supply hole 151a for forming the auxiliary pressure P2 in the storage space S is preferably 1.2 mm to 2.0 mm, and most preferably the diameter of the supply hole 151 a is 1.2 mm. When set, it can be said to be the optimal condition for forming the auxiliary pressure P in the storage space S.

Meanwhile, FIG. 5 shows an experimental graph showing the pressure gradient of the fuel supply line when the diameters of the supply holes 151a are set to 1.2 mm, 1.4 mm, 1.6 mm, 1, 8 mm, and 2.0 mm, respectively.

As shown in the graph line (f) shown in Figure 5, it can be seen that the pressure gradient of the fuel supply line increases as the flow rate of the fluid flowing into the pressure regulator referred to in the prior art increases.

On the other hand, as shown in the graph line (a) to the graph line (e) shown in Figure 5, even if the flow rate of the fluid flowing into the pressure regulator 100 according to an embodiment of the present invention increases fuel It can be seen that the pressure in the supply line is kept constant.

In more detail, it is preferable to set the diameters of the plurality of supply holes 151a to 1.2 mm to 2.0 mm in the aspect of maintaining the pressure of the fuel supply line constant even when the flow rate of the fluid increases. When the diameter of the plurality of supply holes 151a is set to 2.0 mm or more, the pressure of the fuel supply line increases as the flow rate of the fluid increases, as shown in the graph line f shown in FIG. There is a problem that brings the load of the supply line.

In addition, it can be said that the plane area of the plurality of supply holes 151a having the above diameter is smaller than that of the hollow portion 111a formed in the valve seat 111.

Hereinafter, an operation process of the pressure regulator 100 using the auxiliary pressure according to an embodiment of the present invention configured as described above will be described as an example.

First, fluid flows into the hollow portion 111a of the valve seat 111 through the inlet 110a of the housing 110. At this time, the fluid introduced into the hollow portion 111a presses the bottom surface of the valve member 120 seated on the upper portion of the valve seat 111, and when the pressure according to the fluid increases above a certain pressure, the valve member ( 120) rises upward.

Then, as shown in FIG. 2, the valve member 120 presses the lower end of the elastic body 140 to compress the elastic body 140.

Then, the fluid flows into the storage space (S) through the space formed between the bottom surface of the valve member 120 and the top of the valve seat (111). At this time, some of the fluid flowing into the storage space (S) is introduced into the inner space of the cap 130 through a plurality of supply holes (151a) formed in the auxiliary pressure providing member 150, and the remaining fluid is the storage space (S) Temporarily.

When the flow rate of the fluid flowing into the storage space (S) in the above state is increased, the auxiliary pressure (P2) is formed in the storage space (S), and the auxiliary pressure providing member (150) is provided by the auxiliary pressure (P2). It can be raised to press the lower end of the elastic body 140.

Then, the pressing force of the elastic body 140 that was pressing the valve member 120 is reduced, so that the opening amount of the valve member 120 is increased without increasing the pressure P1 of the fluid that pressurizes the bottom of the valve member 120. Can be.

Conventionally, the valve seat 111 was opened only by the pressure of the fluid that pressurizes the bottom of the valve member 120, but the pressure control valve 100 using the auxiliary pressure according to an embodiment of the present invention has a storage space (S). The auxiliary pressure P2 is additionally formed to increase the degree to which the valve member 120 rises on the valve seat 111 to increase the opening amount of the valve seat 111.

Hereinafter, a pressure regulator 200 according to another embodiment of the present invention will be described with reference to FIGS. 6 to 9.

Pressure regulator 200 according to another embodiment of the present invention, unlike the pressure regulator 100 according to an embodiment of the present invention, without using the auxiliary pressure providing member 150, the auxiliary pressure in the storage space (S) It is characterized by having a structure such that (P2) is formed.

For reference, the pressure regulator 200 according to another embodiment of the present invention is provided with a valve member 300 having a different structure from the valve member 120 provided in the pressure regulator 100 according to an embodiment of the present invention, , The rest of the configuration except the valve member 300 has the same configuration as that of the pressure regulator 100 described in one embodiment of the present invention.

Therefore, hereinafter, in describing the pressure regulator 200 according to another embodiment of the present invention, the configuration of the valve member 300 will be mainly described.

6 to 9, the pressure regulator 200 according to another embodiment of the present invention, the fluid flowing through the valve seat 111, the circumferential surface of the valve member 300 and the housing 110 ) Or has a structure that flows into the interior of the cap 130 through the separation space formed between the inner surfaces of the cap 130, at this time, the auxiliary pressure in the storage space (S) formed on the side of the valve seat 111 (P2) may be formed.

That is, the valve member 300 is primarily pressurized by the pressure (P1) of the fluid flowing through the valve seat 111, as shown in Figure 7, secondarily the side of the valve seat 111 As a result, the lower circumference of the valve member 300 is pressurized by the auxiliary pressure P2 generated as the fluid is expanded.

8 and 9, the valve member 300 as above is inclined upward in the radial direction around the bottom surface 310 and the bottom surface 310 placed on the top of the valve seat 111. The formed first inclined surface 320 and the second inclined surface 330 extending upwardly in a radial direction around the upper end of the first inclined surface 320 and having a smaller inclination angle than the inclined angle of the first inclined surface 320 And, a vertical surface 340 extending vertically from the upper circumference of the second inclined surface 320, and a first extending horizontally from the upper circumference of the vertical surface 340 toward the center of the bottom surface 310. It includes a horizontal surface 350, a third inclined surface 360 extending downwardly from an inner side of the first horizontal surface 350, and a second horizontal surface 370 connecting the lower circumference of the third inclined surface 360. Can be.

The bottom surface 310 may be said to be a portion that is primarily pressurized to the fluid discharged to the hollow portion 111a of the valve seat 111, and open or block the hollow portion 111a of the valve seat 111. Is done.

In other words, as shown in FIG. 7, the fluid discharged to the hollow portion 111a of the valve seat 111 first presses the bottom surface 310 of the valve member 300 to press the valve member 300. It is raised on the valve seat 111.

At this time, a predetermined space is formed between the bottom surface 310 of the valve member 300 and the valve seat 111 and fluid flows into the storage space S through this space.

The fluid introduced into the storage space (S) is stored in the storage space (S) and at the same time, the separation space (400) formed between the vertical surface (340) of the valve member (300) and the inner surface of the housing (110) or the cap (130). Through it is introduced into the interior space of the cap 130.

In this state, when the flow rate of the fluid flowing into the storage space (S) increases, a new flow rate is added to the flow rate of the fluid stored in the storage space (S) to further fill the storage space (S), and accordingly, the valve An auxiliary pressure P2 for pressing the second inclined surface 330 of the member 300 is formed in the storage space S.

Then, the valve member 300 is further elevated on the valve seat 111 by the auxiliary pressure P2, and the elastic body 140 is further compressed by the auxiliary pressure P2.

Therefore, the pressure by the fluid applied to the elastic body 140 is substantially the pressure (P1) of the fluid that pressurizes the bottom surface 310 of the valve member 120 through the hollow portion 111a of the valve seat 111. And the auxiliary pressure P2 formed in the storage space S and pressing the second inclined surface 330 of the valve member 120.

On the other hand, the lower end of the elastic body 140 is inserted and seated in a groove-shaped space defined by the third inclined surface 360 and the second horizontal surface 370 of the valve member 300. Therefore, the flow in the left / right direction that occurs when the elastic body 140 is compressed or restored by the upward or downward movement of the valve member 3000 can be prevented, and accordingly, the valve member 300 maintains horizontal It rises or falls in a stable position.

In addition, since the first inclined surface 320 and the second inclined surface 330 of the valve member 300 are formed to be inclined toward the space 400, the second inclined surface 330 is pressed in the storage space S One fluid easily flows toward the space 400.

In addition, the flat area of the space 400 formed between the vertical surface 340 of the valve member 300 and the inner surface of the housing 110 or the cap 130 is smaller than that of the hollow part 111a formed in the valve seat 111. It can be said to be small.

If, if the plane area of the space 400 is larger than the plane area of the hollow portion 111a formed in the valve seat 111, the auxiliary pressure P2 cannot be formed in the storage space S, and accordingly, the valve member ( 300) can only be raised by the pressure (P1) of the fluid to pressurize the bottom surface (310).

Accordingly, when the valve member 300 is raised by the auxiliary pressure P2 and presses the lower end of the elastic body 140, the pressing force of the elastic body 140 that pressurized the second horizontal surface 370 of the valve member 300 is reduced. The valve member 300 that was raised on the valve seat 111 is further raised on the valve seat 111.

That is, the storage space (S) according to the flow rate of the fluid continuously flowing through the space formed between the bottom surface 310 of the valve member 300 and the top of the valve seat 111 without increasing the pressure (P1) of the fluid In the auxiliary pressure (P2) is formed, since the auxiliary pressure (P2) presses the bottom of the valve member 300, the valve member 300 is further raised on the valve seat 111.

So far, specific embodiments according to the present invention have been described, but various modifications are possible without departing from the scope of the present invention.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the claims described below, but also by the claims and equivalents.

For example, in the previous description, it is described that the valve member 120 is installed between the valve seat 111 and the auxiliary pressure providing member 150, but in some cases, the valve seat 111 and the auxiliary pressure providing member 150 It may be possible to control the flow of fluid. This will be described based on FIG. 11.

11 is a cross-sectional view showing another embodiment of a pressure regulator according to the present invention. Referring to the drawings, the pressure regulator of another embodiment includes a housing 110, a cap 130, an elastic body 140, and an auxiliary pressure providing member 150.

The housing 110 is provided with a valve seat 111 in which a fluid is introduced, and an inlet 110a through which fluid is introduced, and a fluid is communicated therein, and the cap 130 is coupled to the housing 110 and in the inlet 110a. An outlet 130a for discharging the inflowing fluid to the outside is provided.

In addition, the elastic body 140 is installed to elastically press in the direction in which the valve seat 111 is disposed in a state built in the cap 130, and the auxiliary pressure providing member 150 includes a housing 110 and a valve seat 111. It is installed between and opens and closes the valve seat 111 by the pressure of the fluid generated as the fluid flows into the valve seat 111, and the fluid enters the side of the valve seat 111 by opening the valve seat 111. As it becomes, the elastic body 140 is pressed by the auxiliary pressure generated on the side of the valve seat 111.

In particular, the auxiliary pressure providing member 150 according to another embodiment is formed with a plurality of supply holes (151a) for supplying fluid to the interior of the cap 130, these supply holes (151a) of the elastic body 140 It is formed at regular intervals on the auxiliary pressure providing member 150 around the axis. At this time, the supply hole 151a formed in the auxiliary pressure providing member 150 is the same as the structure described based on FIGS. 1 to 3.

The auxiliary pressure providing member 150 protrudes toward the inner circumferential surface of the elastic body 140 to form an elastic sheet 152 in which the end of the elastic body 140 is placed, and the elastic sheet 152 is an auxiliary pressure providing member 150 ) Is formed to be bent toward at least one of the inner circumferential surface or the outer circumferential surface of the elastic body 140.

As described above, when the elastic sheet 152 is formed on the auxiliary pressure providing member 150, the auxiliary pressure providing member 150 moves toward the cap 130 by the pressure of the fluid to press the elastic body 140 or vice versa. When the pressure of the elastic body 140 is smaller than the repulsive force of the elastic body 140 to return the auxiliary pressure providing member 150 to its original state, the elastic sheet 152 guides the operation of the auxiliary pressure providing member 150 and the elastic body 140. As a result, a uniform pressure is applied to the entire area of the auxiliary pressure providing member 150, thereby precisely controlling the flow of the fluid.

In addition, the valve seat 111 is provided with a sealing 112 in close contact with the bottom of the auxiliary pressure providing member 150 on the upper end facing the auxiliary pressure providing member. When the valve seat 111 and the auxiliary pressure providing member 150 are closed, the sealing 112 is made of a material that exhibits an elastic restoring force, thereby blocking the flow of fluid in a more airtight state to prevent leakage of the fluid. The flow of fluid can be precisely controlled.

The sealing 112 provided in the valve seat 111 is preferably located between the supply hole 151a and the elastic body 140 formed in the auxiliary pressure providing member 150 so that the valve seat 111 and the auxiliary pressure providing member ( When 150) is closed, the flow of fluid is blocked.

In addition, the auxiliary pressure providing member 150 protrudes in an inclined state toward the axis of the valve seat 111 and guides irregularities 153 that guide fluid flowing through the valve seat 111 to the side of the valve seat 111. ) Is formed.

As illustrated in FIG. 11, the guide irregularities 153 are formed in the shape of a cone protruding from the auxiliary pressure providing member 150 toward the valve seat 111, and the fluid flowing from the valve seat 111 is guide irregularities 153 ) Is guided to the inclined surface of the elastic body 140 and directed toward the bottom of the auxiliary pressure providing member 150 located directly under the elastic body 140 to press the elastic body 140 by the pressure of the fluid introduced through the valve seat 111. It is possible to smoothly open the valve seat 111 and the auxiliary pressure providing member 150 from this, so that the pressure regulator operates precisely.

The pressure regulator according to FIG. 11 having the above structure is composed of only the housing 110, the cap 130, the elastic body 140, and the auxiliary pressure providing member 150, so that the valve member 120 is unnecessary, so that the pressure regulator Not only can the manufacturing cost be lowered by reducing the number of parts, but the structure of the pressure regulator is simple, and the assembly is improved and the reliability of operation is excellent.

100: pressure regulator using auxiliary pressure
110: housing 110a: inlet
111: valve seat 111a: hollow
112: sealing 120: valve member
130: cap 131: outlet
140: elastic body 150: auxiliary pressure providing member
151a: supply hole 152: elastic sheet
153: Guide irregularities S: Storage space

Claims (4)

A housing provided with an inlet through which fluid is introduced, and a valve seat through which fluid is communicated;
A valve member which is movably installed in the valve seat provided in the housing, and opens and closes the valve seat while being moved by the pressure of the fluid generated as fluid flows into the valve seat;
A cap coupled to the housing and provided with an outlet to discharge fluid flowing from the inlet to the outside; And
It includes an elastic body that elastically presses the valve member in a direction in which the valve seat is disposed in a state embedded in the cap.
A pressure regulator using an auxiliary pressure, characterized in that the fluid flowing through the valve seat and pressurizing the valve member flows into the storage space formed on the side of the valve seat to form an auxiliary pressure.
According to claim 1,
As the fluid flows into the side of the valve seat by the opening of the valve seat, it is operated by the auxiliary pressure generated at the side of the valve seat, and is connected to the valve member to be interlocked to connect the auxiliary pressure to the elastic body. A pressure regulator using an auxiliary pressure, characterized in that it comprises a; providing auxiliary pressure providing member.
According to claim 2,
The auxiliary pressure providing member
It includes a coupling hole connected to the valve member, and a plurality of supply holes for supplying fluid to the inside of the cap,
Pressure regulator using an auxiliary pressure, characterized in that to shield the side of the valve member seated on the valve seat, the position of the valve member is variable as it is raised under pressure by the fluid diffused to the side of the valve seat .
A housing provided with an inlet through which fluid is introduced, and a valve seat through which fluid is communicated;
A cap coupled to the housing and provided with an outlet to discharge fluid flowing from the inlet to the outside;
An elastic body elastically pressurized in a direction in which the valve seat is disposed in a state embedded in the cap; And
It is installed between the housing and the valve seat, and opens and closes the valve seat by the pressure of the fluid generated as the fluid flows into the valve seat, and as the fluid flows into the side of the valve seat by opening the valve seat. A pressure regulator using an auxiliary pressure, characterized in that it comprises; an auxiliary pressure providing member for pressing the elastic body by the auxiliary pressure generated on the side of the valve seat.

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