KR102011888B1 - Fluid flow control apparatus for internal-combustion engine and check valve including the same - Google Patents

Abstract

Disclosed is a fluid flow control device installed in a moving passage of a fluid to improve a moving speed of the fluid. To this end, the body is formed in a cylindrical structure so that the vacuum state can be installed on the movement path of the fluid selectively introduced, the center hole to form a venturi passage in the vertical direction in the center of the body, and the center hole It provides a fluid flow control device including a plurality of side holes provided in the vertical direction of the body along the outer circumferential surface of the body to form a passage different from the center hole. The fluid flow control device of the present invention can be easily installed in an existing device using a fluid to maintain a constant flow of fluid even when a vacuum is introduced.

Description

FLUID FLOW CONTROL APPARATUS FOR INTERNAL-COMBUSTION ENGINE AND CHECK VALVE INCLUDING THE SAME}

The present invention relates to a fluid flow control device for an internal combustion engine and a check valve including the same, and more particularly, is installed in an intake air moving passage connected to an engine or a brake device, and the like, even if a vacuum environment is formed on the moving passage. The present invention relates to a fluid flow control device for an internal combustion engine and a check valve including the same, which significantly reduce the mutual interference between the air flows, thereby regulating the flow of the fluid so that the air can be smoothly moved.

In general, the four-stroke driving of an internal combustion engine engine generates power by operating in the order of suction, compression, explosion, and exhaust.

The source of this engine output is the thermal energy generated in the combustion chamber in the cylinder. In this case, the combustion chamber instantaneously burns the atomized fuel and air enclosed therein in the head of the engine to obtain power, and in order to increase the power, more fuel must be combusted so as to increase energy generated in a unit time. This requires more intake air volume.

However, it is not just to increase combustion, but to achieve certain high efficiencies, several ambient conditions must be matched.

The increase in engine power is directly proportional to the amount of air used, and in order to increase the amount of intake air, the amount of air is changed by changing the displacement of each cylinder, improving the flow of air, or using the number of cylinders. At this time, the intake apparatus is a passage for supplying the air necessary for the combustion chamber, and is a very important device for increasing the durability of the engine.

During the four-stroke operation of these engines, intake and exhaust pressures are generated at several intricate stages that act as a resistance to the air flow up to the inlet of the first intake air and the final exhaust outlet.

The path from the first intake port to the final exhaust port is shown in FIG. 1 as shown in FIG. 1, the intake filter 31, the intake 32, the throttle body 33, the surge tank 34, the intake manifold 35, and the head (intake port). 36, in-cylinder combustion chamber 37, head (exhaust port: 38), exhaust manifold 39, exhaust pipe 40, catalyst device 41, intermediate pipe 42, main silencer 43, Via the tail pipe 44 sequentially. Here, the intake means a pipe connecting the intake filter and the throttle body.

Divided broadly, intake pressure at the inlet stage and exhaust pressure at the outlet stage are resistance to air flow.

In addition, there is a valve overlap time in which the intake valve and the exhaust valve are open at the same time in order to improve the filling efficiency by using the inertia of the air flow.

The overlap occurs repeatedly several tens to hundreds of times per second depending on the rotational speed of the engine, and at the valve overlap time, the role of the airtight state of the intake valve is lost, thereby providing a cause of backfire. In order to prevent this, if the valve overlap period is not provided, the valve overlap period is inevitably designed due to the contradiction of the use of air inertia as well as mechanical loads of considerable air pressure in the vertical reciprocating motion of the piston, resulting in very low efficiency. .

In addition, the intake pulsation wave is generated by the inertia force of the inlet force during the intake stroke, which is applied by the closing of the intake valve to generate the opposite flow. This affects the air intake filter (air cleaner inlet), which is one of the causes of the engine power drop.

In order to cope with this problem, various types of techniques have been proposed. Generally, tornadoes, cyclones, jet valves, turbochargers, superchargers, intercoolers, and the like, camshafts for obtaining variable inertia effects of valve overlap timing are known.

They are a means to guide the inhaled air into a more efficient inertial effect, devices that allow forced pressure to flow, or coolers that are difficult to achieve as expected and, when supplied at higher densities, have to cool high density air. Complementary device configurations, such as arrangements have the disadvantage of being very complex and costly manufacturing.

On the other hand, in the case of four-cylinder and six-cylinder, parallel V6, V8, and V12 engines, the manifolds connected to the engine are arranged according to the number of pistons, but the intake duct (intake) is composed of one or two. At this time, when the engine is operated, there is a common point that a vacuum state is introduced into the manifold / surge tank / intake due to the UP / DOWN operation of the piston.

As described above, the vehicle has various intake structures according to the engine type, but uses a method of forcibly blowing compressed air by using a natural suction method and a turbo device according to fuel. Although the suction method is different, intake air is supplied through the intake / surge tank / manifold in a vacuum state in common.

The amount of air corresponding to the theoretical optimum air-fuel ratio should be supplied equally to the piston in a vacuum state, and the amount of air should be supplied equally in the process of separating the intake amount supplied to the manifold through the surge tank according to the vehicle speed and instantaneous acceleration. In the case of fast suction from the intake filter in the state, the amount of intake air supplied to the manifold is sucked uniformly due to the frictional resistance according to the engine structure (inner diameter size / design / distance when inhaling air from the throttle valve to the intake filter). If the amount of air supplied to the piston is not supplied, the result is incomplete combustion.

In addition, when the driver presses the brake, the vehicle is stopped by receiving power by the vacuum booster which is a component of the brake system. According to the structure of the vehicle, a check valve is installed in the hose connecting the vacuum power booster and the intake manifold.

The check valve stores the vacuum formed and at the same time remains constant. In the stopped state, it is possible to prevent the mixer from flowing into the vacuum booster. In particular, diesel vehicles generally use a separate vacuum pump driven by an engine.

As such, the suction pressure is very important in the vacuum state. Therefore, since the suction pressure in the vacuum state varies according to the vehicle speed and the momentary acceleration, the diaphragm assembled inside the check valve assembled in the vacuum power supply device is checked because the amount of opening in the diaphragm varies according to the suction pressure in the vacuum state. Insufficient space for storing the vacuum in the valve, and when the instantaneous suction pressure increases, it is difficult to maintain a constant pressure at the same time, resulting in a lack of suction pressure.

Republic of Korea Patent No. 10-0786297 (August 21, 2007) Republic of Korea Patent Publication No. 10-2016-0108332 (Published September 19, 2016) Republic of Korea Patent Publication No. 10-2015-0040901 (published April 15, 2015)

Accordingly, a first object of the present invention is to divide the air passages into a plurality of air passages, which are fluids flowing into the internal combustion engine, so that the air flows into the internal combustion engine even if the flow opposite to the air flowing into the internal combustion engine is induced from the internal combustion engine. An object of the present invention is to provide a fluid flow control device for an internal combustion engine that moves the opposite flow of air to a different passage so that the inflow of outside air is not disturbed.

In addition, a second object of the present invention is a center hole formed with a venturi passage and a plurality of center holes different from the center hole even when a check valve installed on a moving passage of intake air is exposed to a vacuum environment according to the movement of an engine piston connected to a manifold. It is to provide a check valve for providing a constant flow of air into the engine having a fluid flow control device provided with a passage.

In order to achieve the first object of the present invention described above, in one embodiment of the present invention, a body formed in a cylindrical structure so as to be installed on a movement path of a fluid in which a vacuum state is selectively introduced, and in the middle of the body A center hole forming a venturi passage in a direction, and a plurality of side holes provided along the outer circumferential surface of the body around the center hole in a vertical direction to form a passage different from the center hole; Provide the device.

In addition, in order to achieve the second object of the present invention, in one embodiment of the present invention, a first hollow is formed, a first opening communicating with the first hollow is formed, and an internet port communicating with the first hollow is provided. And a second opening coupled to the cap, the second opening corresponding to the first opening of the cap, a second hollow communicating with the second opening, and an outer port communicating with the second hollow. A check valve comprising a housing, wherein the body is formed in a cylindrical structure so as to be installed on a moving path of a fluid in which a vacuum state is selectively introduced into an outer port communicated with the second hollow; A center hole forming a venturi passage in an up and down direction in the center, and provided in an up and down direction of the body along an outer circumferential surface of the body around the center hole to form a different passage from the center hole; It provides a number of check valve comprising a fluid flow control device including the side hole.

Fluid flow control device according to the present invention can be easily installed in the existing device using the fluid to maintain a constant flow of the fluid. Specifically, in the present invention, even though a mechanical load of considerable air pressure acts on the air passage by the vertical reciprocating motion of the pistons connected to each intake manifold, the suction force and the pushing force are separated by a single passage. It can be prevented to act simultaneously in the phase. In addition, even if the air entering by the inertia force during the intake stroke generates the opposite flow as the pressure is applied by the closing of the intake valve, it creates several passages on the single passage of air, so that the inflow of outside air is disturbed by the opposite flow. Do not receive.

In addition, when the present invention is used in an internal combustion engine connected to a vehicle engine such as an intake (intake duct), regardless of the high speed or low speed driving of the vehicle, the role of the surge tank in the intake, that is, is sucked to the outside and passes through the intake filter It stores a constant air and supplies air at a constant pressure during engine operation. In other words, the flow rate of the fluid supplied to the engine according to the low speed and high speed driving of the vehicle is supplied in relation to the engine crank rotation speed, so that the air supply is not constant, so that the specific gravity of the vehicle fuel is high and the specific gravity is low in the air. There may be a problem of not complete combustion. However, when the fluid flow control device according to the present invention is assembled between the throttle valve tip and the end of the intake, it serves as a surge tank for storing the fluid, and when the cylinder head is operated, the fluid is connected to the intake manifold. The effect is to keep the engine constant.

In addition, the fluid flow control device according to the present invention can improve the problem of the surge tank in the front end of the intake manifold. Specifically, there is a surge tank at the front end of the intake manifold, but when the vehicle is at high speed, a certain amount of air supplies air from the surge tank to the intake manifold, but at a low speed, the surge tank lacks air to the intake manifold line. Can't supply air in certain amount. In contrast, when the fluid flow control device of the present invention is assembled between the intake and the throttle body, between the throttle body and the surge tank, between the surge tank and the intake manifold, and in the check valve, the fluid together with the surge tank even when the vehicle is traveling at a low speed. Since the flow control device stores the air and sends it to the intake manifold, when the fluid flow control device is installed, the air can be supplied to the intake manifold constantly regardless of the speed of the vehicle.

Furthermore, the fluid flow control device according to the present invention stores the vacuum pressure in the check valve of the vacuum booster and distributes the fluid suction force to the various passages, so that the vacuum pressure force and the vacuum booster are generated by the continuous operation of the piston reciprocating stroke. Since the force of the vacuum pressure due to the pressurization of the brake can be released, the suction force in the check valve is kept constant, and smooth braking of the vacuum power booster is possible.

In addition, the fluid flow control apparatus according to the present invention may be formed on the surface of the taperon coating layer to reduce the frictional resistance to accelerate the fluid flow.

1 is a schematic diagram showing a valve overlap state as an internal combustion engine engine configuration including a conventional intake and exhaust device.
Figure 2 is a perspective view for explaining an embodiment of a fluid flow control device according to the present invention.
3 is a rear perspective view showing the fluid flow control device of FIG.
4 is a cross-sectional view showing the fluid flow control device of FIG.
Figure 5 is a schematic diagram for explaining the flow of the fluid through the fluid flow control device according to the present invention.
6 is a front view for explaining another embodiment of the fluid flow control device according to the present invention.
FIG. 7 is a cross-sectional view illustrating the fluid flow regulating device of FIG. 6.
8 is a perspective view showing a check valve equipped with a fluid flow adjusting device according to the present invention.
FIG. 9 is a perspective view illustrating a cap of the check valve of FIG. 8.
FIG. 10 is a rear perspective view of the cap of the check valve of FIG. 8.
FIG. 11 is a cross-sectional view illustrating a flow of a fluid passing through the check valve of FIG. 8.
12 is a perspective view illustrating a housing of the check valve of FIG. 8.
FIG. 13 is a rear perspective view illustrating a housing of the check valve of FIG. 8.
14 is a partially enlarged cross-sectional view illustrating the check valve of FIG. 8.

Hereinafter, with reference to the accompanying drawings will be described in detail a fluid flow control device for an internal combustion engine (hereinafter, abbreviated as "fluid flow control device") according to the preferred embodiments of the present invention.

Figure 2 is a perspective view for explaining an embodiment of the fluid flow control device according to the present invention, Figure 3 is a rear perspective view showing the fluid flow control device of Figure 2, Figure 4 shows the fluid flow control device of Figure 2 It is a cross section.

2 to 4, the fluid flow adjusting device according to the present invention includes a body 10 formed in a cylindrical structure, a center hole 20 forming a venturi passage in the center of the body 10, and the It includes a plurality of side holes 30 provided in the up and down direction of the body 10 along the edge of the body 10, optionally a plurality of middle holes provided between the center hole 20 and the side holes (30) 40 may further include.

The fluid flow control device is installed in an internal combustion engine such as an automobile using fluids such as air and fuel, and provides a function of continually moving a certain amount of fluid even when a vacuum state is introduced into a moving passage of the internal combustion engine.

Of course, the fluid flow regulating device of the present invention can be applied not only to internal combustion engines such as automobiles, but also to various machines and mechanisms having a moving passage of fluid exposed to a vacuum environment.

Hereinafter, each component will be described in more detail with reference to the accompanying drawings.

2 to 4, the fluid flow control device according to the present invention includes a body (10).

The body 10 is formed in a cylindrical structure so that the vacuum state can be installed on the movement path of the fluid to be selectively introduced, and when used in the engine, between the cylinder head and the intake manifold, the inlet portion of the intake manifold (surge) Before the tank, the end of the intake duct (intake) between the intake filter and the intake manifold, the position immediately after passing through the intake filter, and the like. Here, the intake means a pipe connecting the intake filter and the throttle body.

More specifically, when applied to a gasoline engine, the body 10 may be coupled to be inserted into the throttle body or intake duct assembly. And when applied to a diesel engine or a turbo engine, the body 10 can be combined to be interpolated in the throttle body or intake hose (intercooler rear end).

If necessary, the body 10 according to the present invention may be provided with an inlet groove 11 in the upper portion where the fluid is introduced as shown in FIG. The inlet groove 11 is formed in a gentle curve so that the fluid passing through the interior of the body 10 can be smoothly introduced into the center hole 20, the fluid passing through the body 10 is the body 10 It provides a function to reduce the resistance generated when contacting the top of the.

In addition, the body 10 may have a lower surface, that is, a rear end of which the fluid is discharged, may be formed flat or round as shown in FIG. 3.

In addition, the body 10 is preferably formed to have a streamlined top and bottom cross-section of the outer peripheral surface as shown in FIG. Specifically, the body 10 is formed such that the central portion has an outer diameter longer than the upper and lower portions. This is to minimize the air resistance through a streamlined structure.

In a particular aspect, the body 10 according to the present invention has a streamlined structure by forming a wide inlet and outlet of the side hole 30, and narrower than the inlet and outlet of the passage between the inlet and the outlet.

2 to 4, the fluid flow control device according to the present invention includes a center hole (20).

The center hole 20 is to form a venturi passage in the vertical direction in the center of the body 10, it can increase the flow rate of the fluid passing through the venturi passage. Here, the venturi passage means a passage having a wide cross-sectional area at both ends and narrowing toward the middle portion. When the air flows through the inside of the venturi passage, the air is discharged at a higher speed due to the pressure difference between the large and small sections.

In other words, the air flowing into the center hole 20 is changed by the air pressure by the venturi passage while passing through the venturi passage so that the air flow is formed very quickly.

If necessary, the center hole 20 may be provided with a spiral guide groove 24 on the inner peripheral surface of the venturi passage. The spiral guide groove 24 provides a function of applying rotational force to the fluid so that the fluid passing through the venturi passage as shown in FIG.

In detail, the center hole 20 has a sharp edge or protrudes when the inflow portion into which the fluid flows is increased, so that the loss of the flow separation zone increases, so that the inflow portion is formed to have a curved surface. In addition, the center hole 20 is preferably formed to have a curved surface to reduce the frictional resistance to the fluid in the discharge portion from which the fluid is discharged. In other words, when the curved surface is formed at the inlet and outlet of the center hole 20, the wake resistance and friction are reduced.

As such, the center hole 20 further increases the amount of air supplied to the engine, and not only changes the flow of air in a vortex according to the action of the spiral guide groove 24, Likewise, the rate of air flow into the engine is significantly increased.

Accordingly, the center hole 20 increases the suction speed of the air to more finely split the water particles in the air, which is one of the incomplete combustion factors, and allows the fuel and air to be mixed more smoothly by the swirling air flow. In addition, by supplying a large amount of air to the engine, the air compression ratio, heat of compression, and ignition point in the engine are increased, and the fuel mixture ratio is completely burned, thereby preventing the environmental pollution caused by soot, reducing fuel and increasing the engine output. to provide.

2 to 4, the fluid flow control device according to the present invention includes a plurality of side holes (30).

The plurality of side holes 30 are provided in the up and down direction of the body 10 along the outer circumferential surface of the body 10 with respect to the center hole 20 to form a passage different from the center hole 20. Although not particularly limited, it may be changed depending on the size of the control device, it is preferred that two to eight are formed.

The side hole 30 provides a passage through which the opposite flow can move even if a flow opposite to the suction direction of the air is generated by the engine piston or the like. In other words, even if pressure is generated in a direction opposite to the direction of movement of the sucked air, it is passed as a part of the side hole 30 and the sucked air is moved to the center hole 20 and the other side hole 30, Do not conflict with each other.

In addition, the side hole 30 is the inner surface of the pipe so as to prevent the fluid passing through the center hole 20 and the middle hole 40 hit the inner surface of the pipe providing a path of fluid flow such as intake Create a fluid to move along. In other words, the side holes 30 reduce the frictional resistance that may be generated between the fluid passing through the center hole 20 and the middle hole 40 and the pipe by providing an air curtain effect on the inner surface of the pipe. Let's do it.

If necessary, ribs 50 may be formed between the side holes 30 to separate the side holes 30. At this time, the rib 50 is provided in the vertical direction of the body 10. The rib 50 is twisted or inclined to the side of the body 10 in the vertical direction of the body 10 so that the fluid introduced through the side hole 30 is discharged while rotating to form a vortex as shown in FIG. It is preferable that the fork curve is provided. As such, the rib 50 forms a vortex in the fluid introduced into the side hole 30 to reduce the resistance acting on the fluid introduced into the side hole 30.

As such, when the inside of the intake is in a vacuum state according to the amount of opening of the throttle body, the side hole 30 serves as an air curtain so that the flow rate of the fluid passing through the center hole 20 does not fall.

2 to 4, the fluid flow adjusting device according to the present invention may further include a plurality of middle holes 40.

The plurality of middle holes 40 are disposed between the center hole 20 and the plurality of side holes 30 and the vertical direction of the body 10 along the edge of the center hole 20 about the center hole 20. It is formed as, it is not particularly limited because it can be changed according to the size of the fluid flow control device, it is preferable that two to eight are formed. At this time, the upper portion of the middle hole 40 through which the fluid is introduced is provided in the inlet groove of the body 10, it may be in communication with the inlet of the center hole 20.

This middle hole 40 allows the fluid passed as shown in FIG. 5 to have a straight flow. In other words, the middle hole 40 creates a straight air flow acting as a guide, so that the vortex formed along the spiral guide groove 24 of the center hole 20 passes through the distal end of the center hole 20 and then moves. While the vortex state prevents the vanish from colliding with the wall surface of the passage or the air passing through the side hole 30, and the vortex type air flow passing through the center hole 20 and the side hole 30 maintains the vortex, respectively. Allow the engine to be fed.

Here, it is preferable that the sum of the cross-sectional areas of the plurality of middle holes 40 is 1.1 to 1.5 times the minimum cross-sectional area of the center hole 20. The flow rate through the middle hole 40 compensates for the portion where the flow rate of the fluid passing through the center hole 20 changes according to the flow rate and pressure of the fluid generated at the front end of the center hole 20. It also plays a role. And the vortex phenomenon occurs in the rear end as the fluid flows through the center hole 20, the fluid passing through the middle hole 40 serves as an air curtain so that the flow rate of the fluid passing through the center hole 20 does not fall.

In addition, the middle hole 40 has a problem that the amount of fluid passing along the spiral guide groove 24 of the center hole 20 per unit time may be insufficient when the fluid flowing into the fluid flow control device is introduced at a low speed. Provide complementary features. In other words, since the middle hole 40 has a shorter moving path than the long center hole 20, the middle hole 40 passes the fluid at a lower speed faster than the center hole 20, so that even if a strong pressure is not applied. Provides a stable supply of fluid.

As such, when the inside of the intake is in a vacuum state, the middle hole 40 serves as a vent so that the flow rate of the fluid passing through the center hole 20 does not fall.

As described above, the fluid flow control device according to the present invention, when a vacuum state is introduced into the moving passage of the intake air through the reciprocating motion of the piston, when the piston reciprocates at a high speed, based on the center hole 20 The side hole 30 and the middle hole 40 serve as vents for the intake air supplied to the surge tank and serve to divide the intake air so that the flow rate of the fluid passing through the center hole 20 does not fall. do.

On the other hand, if the point where the center hole 20 and the side hole 30 and the middle hole 40 ends are the same, a fine vortex phenomenon occurs in the fluid passing through the center hole 20 and the side hole 30, lift This occurrence can lower the acceleration of the fluid.

In order to prevent the degradation of the fluid acceleration, the lower portion of the body 10 through which the fluid is discharged may be provided with an extension tube having a passage communicating with the middle hole 40 so that the middle hole 40 extends.

The extension pipe mitigates the micro vortices and lift generated at the replacement point of the center hole 20 and the side hole 30 when the flow of the fluid flow is completed by the center hole 20 and the side hole 30, It serves to delay vortex formation and provides the effect of making the fluid flow stably.

If necessary, the extension tube is preferably formed to be tapered (taper) with respect to the central axis of the middle hole (40). More specifically, the extension tube is formed such that the outer diameter is gradually reduced from the front end in contact with the body 10 to the rear end away from the body 10.

When the extension pipe is formed to be tapered, the lift force acting on the first fluid when the first fluid passing through the center hole 20 moves toward the middle hole 40 between the center hole 20 and the middle hole 40. The effect of mitigating the lifting force acting on the second fluid when the second fluid passing through the side hole 30 between the side hole 30 and the middle hole 40 toward the middle hole 40 is relaxed. To provide.

Fluid flow control device according to the invention may further comprise a Teflon coating layer (not shown).

The Teflon coating layer is provided on the surface of the body 10 and the inner surface of the center hole 20 and the side hole 30, and helps the fluid flow control device to withstand the high temperature environment.

In addition, the Teflon coating layer reduces the frictional resistance of the fluid passing through the fluid flow control device, and prevents carbon from adhering to the surface of the fluid flow control device when the fluid is diesel.

6 is a front view for explaining another embodiment of the fluid flow control device according to the present invention, Figure 7 is a cross-sectional view showing the fluid flow control device of FIG.

6 and 7, the fluid flow control device according to the present invention may further include a fluid reservoir 60 and an innet hose coupler 70.

The fluid reservoir 60 and the innet hose coupler 70 are provided to couple the fluid flow control device between the pipe and the pipe, and may be formed to have an integral structure with the main body. At this time, the outer circumferential surface of the end of the body 10 located in the opposite direction to the fluid reservoir 60 may be provided with a fitting holding projection for fitting the body 10 to the inside of the pipe.

Specifically, the fluid reservoir 60 has an expanded diameter than the body 10 to serve as an auxiliary surge tank. To this end, the fluid reservoir 60 is installed at the tip of the body 10, the hollow is formed in communication with the center hole 20 and the side hole (30). Since the fluid reservoir 60 is disposed between the pipe and the pipe, the fluid reservoir 60 is preferably formed to have a diameter larger than the inner diameter of the pipe so as to seal each pipe.

The inlet hose coupling part 70 is provided at the front end of the fluid reservoir 60 located in the opposite direction to the body 10, and communicates with the fluid reservoir 60 and is smaller than the fluid reservoir 60. It is formed to have a diameter. At this time, the innet hose coupling portion 70 may be provided with a fitting projection on the outer circumferential surface of the other end opposite to the one end in contact with the fluid reservoir (60).

The body 10 and the innet hose coupler 70 may be coupled to each pipe through a clamp or the like.

The present invention provides a check valve equipped with the above-described fluid flow control device.

8 is a perspective view showing a check valve equipped with a fluid flow adjusting device according to the present invention.

Referring to FIG. 8, the check valve according to the present invention includes a cap 100 having an inlet port 130, a housing 200 coupled to the cap 100 and having an outer port 230, and And a diaphragm 300 provided between the cap 100 and the housing 200.

More specifically, as shown in FIGS. 9 and 10, the cap 100 includes a first hollow 110, a first opening 120 communicating with the first hollow 110, An internet port 130 communicating with the first hollow 110 is provided. At this time, the outer circumferential surface of the internet port 130 may be provided with a fitting holding projection for fitting the Internet port 130 to the inside of the pipe.

In addition, the cap 100 may be provided between the first hollow 110 and the internet port 130, and may be provided with a first partition wall 140 in which a plurality of first through holes 142 are formed along an edge thereof. Here, the first through hole 142 is formed to have a predetermined length as shown in FIG. 11 to disperse the fluid passing through the first partition wall 140 and have the fluid have a linear flow. At this time, the first through hole 142 is not particularly limited because it may be changed according to the size of the check valve, it is preferable that 4 to 10 is formed.

As shown in FIGS. 12 and 13, the housing 200 corresponds to the first opening 120 of the cap 100 so that the fluid passing through the first opening 120 of the cap 100 may be introduced. A second opening 220 is formed, a second hollow 210 communicating with the second opening 220 is formed, and an outer port 230 communicating with the second hollow 210 is provided. In this case, the outer circumferential surface of the outnet port 230 may be provided with a fitting retaining protrusion for fitting the outer port 230 into the inside of the pipe.

In addition, the housing 200 may be provided with a second partition wall 240 inside the housing 200 to divide the second hollow 210 into two hollows (primary and secondary hollow). A plurality of second through holes 242 are formed along the edge of the second partition wall 240. Here, as shown in FIG. 11, the second through hole 242 has a housing 200 in which the fluid entering the primary hollow of the housing 200 is dispersed through the first opening 120 of the cap 100. To disperse the fluid to enter the secondary hollow. At this time, the second through hole 242 may be changed according to the size of the check valve, but is not particularly limited, but 4 to 10 is preferably formed.

As described above, the check valve according to the present invention provides a fluid reservoir 222 which is an empty space between the second partition 240 and the outlet port 230, as shown in FIG. 2 Vortex is generated in the fluid passing through the through hole 242.

On the other hand, the above-described fluid flow adjusting device is provided inside the outnet port 230 according to the present invention. For example, the fluid flow control device includes a body 10 formed in a cylindrical structure so as to be installed on a movement path of a fluid in which a vacuum state is selectively introduced, and a venturi passage in a vertical direction in the center of the body 10. The center hole 20 and the plurality of the center hole 20 is provided along the outer circumferential surface of the body 10 along the outer circumferential surface of the body 10 to form a passage different from the center hole 20. It includes a side hole (30).

If necessary, the fluid flow control device may be separately manufactured as described above and then inserted into the check valve, but may be integrally formed with the outlet port 230 as shown in FIG. 13. As such, when the fluid flow regulator is integrally formed with the outer port 230, the body 10 of the fluid flow regulator replaces the outer port 230.

The diaphragm 300 is configured to selectively block the housing 200 and the cap 100 so that fluid inside the housing 200 does not flow back into the cap 100. When the fluid is introduced into the housing through the 142, the first through hole 142 is opened by being spaced apart from the first through hole 142 by bending. When the fluid does not flow from the cap 100, the diaphragm 300 closes the first through hole 142 to close the first through hole 142.

Although the above has been described with reference to the preferred embodiments of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. It will be appreciated.

10 body 20 center hole
30: side hole 40: middle hole
50: rib 60: fluid reservoir
70: innet hose joint 100: cap
110: first hollow 120: first opening
130: internet port 140: the first partition wall
142: first through hole 200: housing
210: second hollow 220: second opening
222: fluid storage 230: outnet port
240: second partition 242: second through hole

Claims (8)

A body formed in a cylindrical structure to be installed on a movement path of a fluid in which a vacuum state is selectively introduced;
A center hole forming a venturi passage in a vertical direction in the center of the body and having a spiral guide groove formed on an inner circumferential surface of the venturi passage;
A plurality of side holes provided in an up and down direction of the body along an outer circumferential surface of the body with respect to the center hole to form a passage different from the center hole;
A plurality of middle holes disposed between the center holes and the plurality of side holes, the plurality of middle holes being formed in an up and down direction of the body along an edge of the center hole and having a straight flow; And
An extension tube provided to have a passage communicating with the middle hole so that the middle hole extends from the lower part of the body,
The body is fluid flow control device characterized in that the inlet and outlet of the side hole is wide and the central portion has a longer outer diameter than the top and bottom so that the passage connecting the inlet and outlet of the side hole is narrow. delete The method of claim 1, wherein the middle hole and the side hole
Fluid flow control device, characterized in that formed two to eight. The method of claim 1, wherein the plurality of side holes
A rib is formed between the side holes to separate side holes, and the ribs are curved to be inclined to the side of the body in the up and down direction of the body so that the fluid introduced through each side hole can be discharged while rotating. Fluid flow control device. According to claim 1,
And a teflon coating layer on the surface of the body and the inner surfaces of the center hole and the side hole. According to claim 1,
A fluid reservoir installed at a front end of the body, the hollow communicating with the center hole and the side hole and having an expanded diameter than the body; And
And an inlet hose coupling portion provided at the front end of the fluid reservoir and in communication with the fluid reservoir and having a reduced diameter than the fluid reservoir. A first hollow formed therein, a first opening formed in communication with the first hollow, and a cap having an inlet port communicating with the first hollow; and a second coupled to the cap, the second opening corresponding to the first opening of the cap. A check valve comprising: a housing having an opening formed therein, a second hollow communicating with the second opening, and having an outer port communicating with the second hollow; and a diaphragm provided between the cap and the housing.
A body formed in a cylindrical structure so as to be installed on a moving path of a fluid in which a vacuum state is selectively introduced into the outer port communicating with the second hollow, and a venturi passage in a vertical direction in the center of the body; And a plurality of side holes formed in the inner circumferential surface of the venturi passage and provided with a spiral guide groove in a vertical direction along the outer circumferential surface of the body around the center hole to form a passage different from the center hole. A plurality of middle holes disposed between the hole and the center hole and the plurality of side holes, the plurality of middle holes being formed in the up and down direction of the body along the rim of the center hole to have a linear flow; And an extension tube provided to have a passage communicating with the middle hole so that the middle hole extends from the lower part of the body. It includes a section unit,
The body has a check valve, characterized in that the inlet and outlet of the side hole is wide and the central portion has a longer outer diameter than the top and bottom so that the passage connecting the inlet and outlet of the side hole is narrow. The method of claim 7, wherein
A first partition wall disposed between the first hollow and the internet port and having a plurality of first through holes formed along an edge thereof; And
And a second partition wall provided inside the housing to divide the second hollow into two hollows and having a plurality of second through holes formed along an edge thereof.

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