KR101543158B1 - Expanded Chamber type Anti Surge Valve and Vehicle Turbo Charger System thereby - Google Patents

Abstract

An expanded chamber type anti-surge valve (1) of the present invention comprises: a valve assembly (50) fixated on a bottom of a diaphragm assembly (20) moved by a negative pressure (not higher than the atmospheric pressure) formed in an expanded chamber (5), and preventing eccentric movement to a valve guide (10). The expanded chamber (5) is divided into a control pressure chamber connected to a control pressure path nipple (3-2) forming the negative pressure (not higher than the atmospheric pressure), and a bypass chamber (5B) through which the high pressure and temperature supercharge air including blow-by oil mist from a turbocharger (200) passes. Therefore, the degradation of durability of a rubber diaphragm (21) caused by the blow-by oil mist is prevented, and the movement of a valve rod (53) is guided when being opened by a pre/post pressure difference of a throttle valve using a valve guide (10); thereby preventing eccentricity and improving internal confidentialness. A separated chamber type anti-surge valve (1) is applied, thus the present invention is able to reduce surge noise and form a vehicle turbocharger system without vibration of the engine in a speed reduction section and a shortage of output by the reduction of air flow.

Description

[0001] The present invention relates to an expansion chamber type anti-surge valve and a vehicle turbocharger system using the same,

The present invention relates to an anti-surge valve and, more particularly, to an anti-surge valve that is free from adverse effects due to high-temperature high-pressure supercharged intake including a blow-by-oil mist as an expansion chamber with an increased vertical height And an extended chamber type anti-surge valve is applied to thereby enable remarkable surge noise reduction as well as durability.

Generally, the turbocharger applied to the car is influenced by the surge noise generated by the turbo charger in the turbo charger when the accelerator pedal is turned off after the accelerator is turned off.

An example of such a vehicle is a commercial CNG (Compressed Natural Gas) vehicle.

As a result, a commercial CNG (Compressed Natural Gas) vehicle is composed of a turbocharger and an anti-surge valve, and an anti-surge valve reduces the noise of the turbocharger Charger durability is prevented.

For example, the anti-surge valve opens the valve outlet by acting on the negative pressure of the intake manifold caused by the throttle valve closing (the tail end of the throttle valve, about 1.18 bar), and the open valve outlet opens to the turbocharger side high- Valve shear, about 1.22 bar) to the duct to reduce surge noise. To this end, the anti-surge valve is provided with a rubber material diaphragm and an integrally formed diaphragm operating portion and an intake flow portion which are opened and closed by a pressure difference between the front and rear of the throttle valve.

In this way, the anti surge valve lowers the surge noise so that the durability of the turbocharger can be secured.

Korean Patent Publication 10- 2003-0005469 (January 23, 2003)

However, the rubber material diaphragm of the anti-surge valve is exposed to the high-temperature and high-pressure turbocharger supercharging air when the throttle valve is opened and closed by the pressure difference between the throttle valve and the blower included in the supercharged intake air of the high- Direct contact with the Blow-by-Oil Mist will result in poor durability.

This durability of the rubber diaphragm deteriorates the rubber material diaphragm as well as the tearing of the diaphragm. The rubber diaphragm is tapered so that the diaphragm connected to the diaphragm and the eccentricity of the intake flow move eccentrically to prevent the normal operation of the anti surge valve It is becoming a cause of difficulty.

Further, the abnormal operation of the anti-surge valve is caused by the engine auxiliary valve, which is a phenomenon in which the pressure introduced to the rear end of the throttle valve in the deceleration section is supplied to the engine, and the intake valve pressure, It is inevitable that there will be a shortage of output due to a decrease in supplied air flow rate.

In view of the above, the present invention can prevent direct contact between a high-temperature, high-pressure turbocharger supercharger intake air including a blow-by-oil mist, and a rubber material diaphragm by using an expansion chamber with an increased vertical height, A separation chamber type anti-surge valve is provided to prevent the cause of durability decrease of the diaphragm and to prevent the cause of eccentricity and to improve the internal airtightness by guiding movement of the diaphragm connection part when the throttle valve is opened by the pressure difference between the front and rear using the valve guider .

In view of the above, the present invention is applied to a separation chamber type anti-surge valve having anti-durability, prevention of eccentricity, and improved airtightness of a rubber diaphragm, And in particular, to provide a vehicle turbocharger system that does not suffer from an engine deceleration phenomenon in a deceleration section and a lack of output due to a decrease in air flow rate during acceleration.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided an expansion chamber type anti-surge valve comprising: a valve body having an inlet port for introducing a supercharged intake air compressed with air; and an outlet for discharging the supercharged intake air; A valve cover having a control pressure passage nipple which is coupled to the valve body by a fastening member to form a hollow internal space together with the valve body and to which pressure of the supercharged intake air is applied; A diaphragm disposed in the expansion chamber formed in the inner space and being moved to a negative pressure which is a subatmospheric pressure of the supercharged intake; A valve disc fixedly attached to the lower portion of the diaphragm; A valve rod inserted into a valve guide positioned on an upper surface of the inner space of the valve cover through the diaphragm while being fixed to the valve disc; Wherein the expansion chamber is divided into a control pressure chamber forming an upper space of the diaphragm to form the negative pressure and a bypass chamber having a lower space of the diaphragm through which the high temperature high pressure supercharged intake air passes.

Wherein the control pressure passage nipple is communicated with the control pressure chamber, and the inlet to the boosting air passage and the outlet to the boosting air passage are connected to the bypass chamber, and the inlet and outlet of the boosting air passage are connected to each other through a 90- .

The valve guide is located in a valve guide boss protruding from the upper surface of the inner space of the valve cover toward the inner space, and a guide bush through which the valve rod penetrates is provided.

The diaphragm is made of a rubber material, and a rim protruding from the valve body and the valve cover is formed at an edge of the diaphragm. One side of the diaphragm is padded with reinforcing steel. The diaphragm has a diaphragm cup through which the valve rod passes, and a valve disc ring is formed on a lower surface of the diaphragm to hold the hollow protruding boss of the valve disc.

The valve disc is fixed to the valve rod by rivets. The valve disc is fixed to the upper surface of the valve disc. The valve disc is fixed to the upper surface of the valve disc, To form a hollow projecting boss which is fitted into the valve disc ring projecting from the lower surface of the frame. The valve disc further includes an O-ring, and the O-ring is fitted in the valve disc to wrap the valve rod.

The valve body is provided with a body flange through which the coupling member passes, an airtight groove formed in a rim of the body flange so as to fit the rim of the diaphragm, Sheet seat surface is included.

The valve cover includes a cover flange through which the fastening member passes, and a valve guide boss in which the valve guide is located.

The fastening member is composed of at least four fastening members, and each of the fastening members tightens the valve body and the valve cover evenly.

In order to achieve the above object, according to the present invention, there is provided a vehicle turbocharger system including a valve body and a valve cover coupled to each other by a fastening member to form an expansion chamber partitioned by a control pressure chamber and a bypass chamber, A control pressure passage nipple forming a negative pressure in the chamber, a valve guide for preventing eccentric movement of the valve rod of the valve assembly, a diaphragm assembly moved to a negative pressure (under subatmospheric pressure), and a diaphragm assembly The valve assembly having a diaphragm assembly and a fixed valve assembly passing through the valve guide to open the bypass chamber, an inlet to the supercharged air passage communicating with the bypass chamber and having a phase difference of 90 degrees with respect to each other, and an anti- surge valve Anti Surge Valve); A turbine rotating with exhaust gas from an engine through an exhaust manifold; and a turbocharger having a compressor that compresses the air introduced into the air duct to form the supercharged intake air; A throttle valve for supplying the supercharged intake air cooled by the intercooler to the engine and changing the supercharged intake air flow rate; and a control unit for controlling the supercharged intake air at a front end portion of the throttle valve to a bypass chamber of the anti- An intake manifold for transmitting pressure from the supercharged intake at a rear end portion of the throttle valve to a control pressure chamber of the anti-surge valve; A bypass line connected to the anti-surge valve and adapted to feedback the supercharged intake air from the anti-surge valve to the compressor of the turbocharger; Is included.

The anti-surge valve of the present invention does not directly contact the high-temperature high-pressure supercharged intake valve including the blow-by-oil mist due to the separation of the control pressure chamber and the bypass chamber, The durability is greatly increased, and the endurance reliability of the anti-surge valve is improved by about 70% compared with the conventional one.

The throttle valve rear pressure (intake manifold pressure) is supplied to the control pressure chambers separated from each other, while the throttle valve front pressure (rear pressure of the intercooler) is supplied to the bypass chamber in the anti surge valve of the present invention. The accuracy of operation of the diaphragm due to the pressure fluctuation is greatly increased.

In addition, the anti-surge valve of the present invention has an effect of preventing the cause of eccentricity and enhancing the internal airtightness by guiding the movement of the diaphragm connecting part when the throttle valve is opened by the pressure difference between the front and rear using the valve guide .

In addition, the commercial vehicle turbocharger system according to the present invention is configured with an anti-surge valve whose durability reliability is improved by about 70% compared with the conventional anti-surge valve, thereby greatly reducing the surge noise, The distance has no effect on engine failures and lack of output due to air flow reduction during acceleration.

2 is a detailed configuration of a valve body in which an expansion chamber according to the present invention is formed, and FIG. 3 is a sectional view of a valve guide, a diaphragm assembly, Fig. 4 is a diagram showing the configuration of a vehicle turbocharger system to which an expansion chamber type anti-surge valve according to the present invention is applied, Fig. 5 is an operational state of an expansion chamber type anti- Is an operation diagram of a diaphragm according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which illustrate exemplary embodiments of the present invention. The present invention is not limited to these embodiments.

FIG. 1 shows a configuration of an expansion chamber type anti-surge valve according to the present embodiment, and FIG. 2 shows a detailed configuration of a valve body having an expansion chamber.

As shown, the expansion chamber type anti-surge valve 1 includes a valve body 2, a valve cover 3, a fastening member 9, a valve guide 10, a diaphragm assembly 20, A control spring 30, and a valve assembly 50.

Specifically, the valve body 2 forms an inner space having an upper opening with respect to a vertical cross section in the axial direction. The inlet 7-1 is connected to the inner space at the side of the valve body 2 and the outlet 7-2 is connected to the inlet 7-1 of the intake air passage 7-1 at an angle of 90 degrees And communicates with the inner space.

Particularly, the valve body 2 is made of ALDC material and has a heat resistance of about 180 캜 and a tensile strength of about 280 MPa.

In addition, the valve body 2 is provided with a body flange 2-1 formed on the upper surface of the valve body 2 with a size larger than the horizontal section of the valve body 2, And a valve seat seating surface (2-6) protruding from the bottom surface of the inner space and formed on the inlet surface of the supercharging air passage outlet (7-2).

The cover flange 3-1 of the valve cover 3 is in close contact with the body flange 2-1 and the fastening member 9 passes through the fastening hole of the cover flange 3-1, 1). The body flange 2-1 has a square shape with a fastening hole formed at each corner. The diaphragm 21 of the diaphragm assembly 20 is fitted in the airtight groove 2-3 so that the body flange 2-1 of the valve body 2 and the cover flange 2b of the valve cover 3, (3-1) is sealed with the diaphragm (21). The valve seat (52) of the valve assembly (50) is in close contact with and spaced from the valve seat seating surface (2-6), thereby opening and closing the supercharging air passage outlet (7-2).

Specifically, the valve cover 3 forms an inner space with its lower portion opened with respect to an axial vertical section. A control pressure passage nipple 3-2 communicates with the inner space at an upper portion of the valve cover 3.

Particularly, the valve cover 3 is made of ALDC material and has a heat resistance of about 180 캜 and a tensile strength of about 280 MPa.

In addition, the valve cover 3 is provided with a cover flange 3-1 formed on the bottom surface of the valve cover 3 in a size larger than the horizontal section of the valve cover 3, The valve guide boss 3-3 is further included.

The body flange 2-1 of the valve body 2 is closely attached to the cover flange 3-1 and the fastening member 9 passes through the fastening holes of the cover flange 3-1 to form the body flange 2-1, 1). The cover flange 3-1 has a square shape with a fastening hole formed at each corner.

At least four fastening members 9 are attached to the cover flange 3-1 of the valve cover 3 and the body flange 2-1 of the valve body 2 by bolts or screws, .

The internal space of the valve body 2 and the valve cover 3 coupled to each other through the fastening member 9 is formed by the expansion chamber 50 joined to each other and the valve body 2 and the valve cover 3, The control pressure chamber 5A and the bypass chamber 5B are separated by the diaphragm 21 of the diaphragm assembly 20 fixed between the control pressure chamber 5A and the bypass chamber 5B.

The control pressure chamber 5A forms an upper space of the diaphragm 21 and forms a negative pressure (subatmospheric pressure) to which a suction force is applied to the diaphragm 21 for opening and closing the valve assembly 50 do. The bypass chamber 5B is a space below the diaphragm 21 and is a supercharged air passage through which high-temperature, high-pressure intake air supercharged by a turbocharger passes. The inlet 7-1 and the supercharger air- (7-2).

The valve guide 10 includes a guide bushing 10-1 through which the valve rod 53 of the valve assembly 50 is passed and which surrounds the valve rod 53 to allow the diaphragm 21 of the diaphragm assembly 20 The eccentricity of the valve assembly 50 can be removed when the valve rod 53 is moved.

The diaphragm assembly 20 is composed of a diaphragm 21, a diaphragm cup 23 and a diaphragm plate 25 and is integrated with the valve rod 53 of the valve assembly 50 do. Particularly, the diaphragm assembly 20 is moved by receiving the suction force formed by the control pressure chamber 5A.

The control spring 30 provides an elastic restoring force upon returning the diaphragm assembly 20 to its initial position, and is made of a coil spring type.

The valve assembly 50 includes a valve disc 51, a valve seat 52 and a valve rod 53. When the diaphragm assembly 20 is moved by the suction force, So that the outlet 7-2 is opened to the charge air passage.

3 shows a detailed configuration of the valve guide 10, the diaphragm assembly 20, and the valve assembly 50 according to the present invention.

Specifically, the valve guide 10 is configured with a guide bush 10-1 through which the valve rod 53 of the valve assembly 50 passes. Particularly, since the position hole 10A having a diameter difference is further formed in the guide bush through-hole of the valve guide 10, the assembling position of the guide bush 10-1 is limited.

The diaphragm assembly 20 includes a diaphragm 21 and a diaphragm cup 23 located inside the diaphragm 21 in an integrated state and a valve rod 53 of the valve assembly 50 And is fixed to the flange nut 59 in the inner space of the diaphragm cup 23.

Specifically, the diaphragm 21 is made of a rubber material of FVMQ (hardness: 50) and has an open cup shape having a thickness of about 0.8 t. Particularly, the diaphragm 21 is fitted in the airtight groove 2-3 of the valve body 2 by forming the rim projection 21-1 at the rim of the diaphragm. The diaphragm 21 is fixed to the valve rod 53 of the valve assembly 50 to move the valve disc 51 and the body flange of the valve body 2, (2-1) and the cover flange (3-1) of the valve cover (3).

In addition, the durability of the diaphragm 21 can be greatly increased without changing the cross section of the diaphragm 21 by padding the ARAMID (NOMEX) reinforcing steel material 21-2 on the inner space of the diaphragm 21 . A valve disc 51 of the valve assembly 50 is provided on the inner circumferential surface of the valve disc ring 21-3 so that the valve disc ring 21-3 protrudes outwardly from the diaphragm 21, The bottom portion of the diaphragm 21 can be covered with the valve disc 51 to which the valve disc 51 is attached. Therefore, the diaphragm 21 of the rubber material can minimize the direct contact with the high-temperature high-pressure turbocharger supercharged intake air including the blow-by-oil mist, thereby greatly reducing the durability.

The diaphragm cup 23 is made of a steel material.

The valve assembly 50 includes a valve disc 51 for opening and closing the outlet 7-2 of the supercharging air passage and a valve 51 for closing the outlet of the supercharging air passage outlet 7-2, A seat 52, a valve rod 53 fixed to the valve disc 51 by a rivet 55, and an O-ring 57 fitted to the valve disc 51 and the valve rod 53 .

Specifically, the valve disc 51 is made of a metal material, and a hollow protruding boss for fitting the valve disc ring 21-3 formed in the diaphragm 21 of the diaphragm assembly 20 is formed on the upper surface thereof , And a stepped surface is formed on the bottom surface of the valve seat 52 so that the valve seat 52 stably adheres to the valve seat 52. The valve seat 52 is made of a rubber material and is in close contact with the stepped surface of the valve disc 51. The valve seat 52 is formed concentrically with the annular contact protrusion 52-1 so as to be in contact with the inlet surface of the supercharging air passage outlet 7-2 And is brought into close contact with the valve seat seating surface 2-6 formed. The valve rod 53 has a rod shape and one end passes through the valve disc 51 and the valve seat 52. The rivet 55 is fastened to one end of the valve rod 53 to integrate the valve disc 51 and the valve rod 53 to form a clamping force. The O-ring 57 is fitted in the hole of the valve disc 51 passing through one end in a state of wrapping one end of the valve rod 53.

Meanwhile, FIG. 4 shows a configuration of a vehicle turbocharger system to which the expansion chamber type anti-surge valve according to the present invention is applied.

As shown, the commercial vehicle turbocharger system includes an anti-surge valve 1, a turbocharger 200, a turbine (not shown) of the turbocharger 200 in the engine 100, The intake manifold 500 connected to the engine 100 from the compressor 220 of the turbocharger 200 and the intake manifold 500 connected to the intake manifold 500 connected to the intake manifold 500, And a bypass line 700 connected from the anti surge valve 1 to the compressor 220 of the turbocharger 200. The bypass line 700 is connected to the compressor 220 of the turbocharger 200. [

An example of such a vehicle is a commercial CNG (Compressed Natural Gas) vehicle.

The anti-surge valve 1 includes a control valve 5A and a bypass chamber 5B. The anti-surge valve 1 includes an expansion chamber 5 partitioned by a control pressure chamber 5A and a bypass chamber 5B. A control pressure passage nipple 3-2 for forming a negative pressure (subatmospheric pressure) in the body 2 and the valve cover 3, a control pressure chamber 5A, The diaphragm assembly 20 includes a valve guide 10 to prevent movement, a diaphragm assembly 20 to be moved to a negative pressure (under subatmospheric pressure), a valve guide 20 to open the bypass chamber 5B with movement associated with movement of the diaphragm assembly 20, (10), a valve assembly (50) fixed to the diaphragm assembly (20), an inlet air inlet (7-1) communicating with the bypass chamber (5B) (7-2). Therefore, the anti-surge valve 1 is the same as that of the expansion chamber type anti-surge valve described with reference to FIGS.

The turbine 210 of the turbocharger 200 is rotated by the exhaust gas from the engine 100 through the exhaust manifold 300 and the compressor 220 of the turbocharger 200 Compresses the air introduced into the air duct 400 and forms a supercharged air intake. The intercooler 600 lowers the temperature by cooling the supercharged intake air from the turbocharger 200.

The intake manifold 500 is provided with a throttle valve 500-1 and a super inlet air passage inlet 7-1 of the anti-surge valve 1 is provided at a front end portion of the throttle valve 500-1. And the control pressure passage nipple 3-2 of the anti-surge valve 1 is connected to a rear end portion of the throttle valve 500-1.

The bypass line 700 is connected to the outlet 7-2 of the super surge valve 1 so that the intake manifold 500 is removed from the front end of the throttle valve 500-1 The high-temperature and high-pressure supercharged intake air is fed back to the compressor 220 of the turbo charger 200.

5 shows an operating state of the anti-surge valve 1. FIG. 6 shows an operation diagram of the diaphragm 21 of the anti-surge valve 1. As shown in FIG.

The throttle valve rear end pressure A of the intake manifold 500 at the rear end position of the throttle valve acts on the control pressure chamber 5A of the anti-surge valve 1, The throttle valve front end pressure B of the intake manifold 500 at the front end position of the throttle valve acts on the bypass chamber 5B of the anti-surge valve 1.

When the acceleration is performed in the above-described state, the opening angle of the throttle valve 500-1 is increased, so that the rear end pressure A of the throttle valve must be relatively larger than the throttle valve front end pressure B. Therefore, the pressure formed in the control pressure chamber 5A of the anti-surge valve 1 is relatively larger than the pressure formed in the bypass chamber 5B, which causes the diaphragm 21 to contact the anti- The valve seat 52 of the valve disc 51 is pressed against the valve seat 5B formed on the inlet face of the outlet 7-2 to the supercharging air passage 5 by forming a swinging movement pushing the valve seat 5 toward the bypass chamber 5B of the surge valve 1, And maintains a close contact state with the surface (2-6).

Therefore, the anti-surge valve 1 is maintained in a closed state.

On the other hand, when the deceleration is performed in the above-described state, the opening angle of the throttle valve 500-1 is reduced, so that the throttle valve rear end pressure A becomes relatively smaller than the throttle valve front end pressure B. Therefore, the pressure formed in the control pressure chamber 5A of the anti-surge valve 1 is relatively smaller than the pressure formed in the bypass chamber 5B, which causes the control pressure chamber 5A to have a diaphragm Suction pressure is generated by pulling out the suction force.

Then, the diaphragm 21 is pulled away from the bypass chamber 6 of the anti-surge valve 1, and the pulling movement of the diaphragm 21 is fixed to the diaphragm 21 The valve disc 51 fixed to the valve rod 53 is moved together in the moving direction of the valve rod 53 by pulling the valve rod 53 together. At this time, the valve rod 53 is stably moved through the guide bushing 10-1 of the valve guide 10 without any eccentricity, so that the diaphragm 21 is prevented from being subjected to an additional local load due to the eccentricity of the valve rod 53 I will not receive it.

The valve seat 52 provided in the valve disc 51 is separated from the valve seat seating surface 2-6 formed on the inlet surface of the supercharging air passage outlet 7-2, 2) is opened. Accordingly, the anti-surge valve 1 is switched to the open state.

Therefore, the high-temperature high-pressure supercharged intake of the intake manifold 500, which flows into the bypass chamber 5B through the inlet 7-1 of the super surge valve 1 of the anti-surge valve 1, The high temperature and high pressure supercharged intake air discharged from the outlet 7-2 to the supercharging air passage is supplied to the compressor 220 of the turbocharger 200 through the bypass line 700, (Feedback). As a result, the anti-surge valve 1 reduces the surge noise.

Particularly, at the time of feedback of such high-temperature high-pressure supercharged intake air, the diaphragm 21 is shielded by the valve disc 51 to minimize the direct contact with the high-temperature high-pressure supercharged air introduced into the bypass chamber 5B, (21) is free from adverse influences due to blow-by-oil mist included in the supercharged intake of high temperature and high pressure.

As a result, it has been experimentally proven that the endurance reliability of the anti-surge valve 1 is improved by about 70% compared with the conventional one by increasing the durability of the diaphragm 21 made of rubber.

As described above, the expansion chamber type anti-surge valve 1 according to the present embodiment is provided with the valve body 2 coupled to each other by the fastening member 9 and the valve body 2 formed as the internal space of the valve cover 3 The diaphragm assembly 20 is fixed in a state of being tightly adhered to the lower portion of the diaphragm assembly 20 which is moved to a negative pressure (subatmospheric pressure) formed in the expansion chamber 5 and the valve chamber 10, A control pressure chamber 5A connected to a control pressure passage nipple 3-2 in which the expansion chamber 5 forms a negative pressure (subatmospheric pressure), a turbocharger And a bypass chamber 5B through which a high-temperature, high-pressure supercharged intake air including a blow-by-oil mist generated from the high-temperature high-pressure supercharger 200 is passed.

Therefore, it is possible to prevent the cause of the durability deterioration of the rubber material diaphragm 21 due to the blow-by oil mist included in the supercharged intake air and to prevent the throttle valve from being opened by the pressure difference between the front and rear of the throttle valve The anti-surge valve 1 is applied to reduce the surge noise. The anti-surge valve 1 prevents the eccentricity of the valve rod 53, And it is possible to realize a vehicle turbocharger system which does not suffer from an engine collision phenomenon in a deceleration section and an output shortage due to a decrease in air flow rate during acceleration.

1: Anti Surge Valve
2: Valve body 2-1: Body flange
2-3: airtight groove 2-6: seat surface of valve seat
3: Valve cover 3-1: Cover flange
3-2: Control pressure passage nipple 3-3: Valve guide boss
5: Expansion chamber 5A: Control pressure chamber
5B: Bypass chamber
7-1: Charge air outlet 7-2: Charge air outlet
9: fastening member
10: valve guide 10A: position hole
10-1: Guide Bush
20: diaphragm assembly 21: diaphragm
21-1: rim of the rim 21-2:
21-3: Valve disc ring 23: Diaphragm cup
30: control spring 50: valve assembly
51: valve disc 52: valve seat
52-1: annular adhered projection 53: valve rod
53-1: valve fixing portion 55: rivet
57: O ring
100: Engine 200: Turbo Charger
210: Turbine 220: Compressor
300: exhaust manifold 400: air duct
500: intake manifold 500-1: throttle valve
600: Intercooler 700: Bypass line

Claims (12)

A valve body having an inlet to the supercharged air passage into which the supercharged intake air compressed by the air flows and an outlet to the supercharged air passage through which the supercharged intake air is discharged;
A valve cover having a control pressure passage nipple which is coupled to the valve body by a fastening member to form a hollow internal space together with the valve body and to which pressure of the supercharged intake air is applied;
A diaphragm disposed in the expansion chamber formed in the inner space and being moved to a negative pressure which is a subatmospheric pressure of the supercharged intake;
A valve disc fixed on the lower portion of the diaphragm to form a hollow protruding boss on the upper surface of the diaphragm,
A valve seat in close contact with a stepped surface formed on a lower surface of the valve disc and in contact with a valve seat seating surface formed on the inlet surface of the outlet of the supercharging air passage outlet by a concentric annular fitting projection;
A valve rod inserted into a valve guide positioned on an upper surface of the inner space of the valve cover through the diaphragm while being fixed to the valve disc;
Wherein the expansion chamber is divided into a control pressure chamber forming the upper space of the diaphragm to form the negative pressure and a bypass chamber through which the high temperature high pressure supercharging air is passed through the lower space of the diaphragm;
Wherein the valve disc is integrally formed with the valve disc, the valve seat, the valve rod, and the rivet by a rivet which is fastened to one end of the valve rod and fixes the valve rod to the valve disc, Is moved to a pressure difference between the pressure of the control pressure chamber and the bypass chamber so as to close or open the inlet of the outlet to the boost air port.
2. The air conditioner according to claim 1, wherein the control pressure chamber is communicated with the control pressure passage nipple, and the bypass chamber is connected to the inlet of the supercharging air passage and the outlet of the supercharging air passage, Wherein the anti-surge valve has a phase difference of 90 degrees with respect to each other.
The expansion chamber type anti-surge as set forth in claim 1, wherein the valve guide is disposed in a valve guide boss protruding from the upper surface of the inner space of the valve cover toward the inner space, valve.
The expansion chamber type anti-surge valve according to claim 1, wherein the diaphragm is made of a rubber material, and rim protrusions are formed at the rim of the diaphragm to be fitted between the valve body and the close contact surface of the valve cover.
The expansion chamber type anti-surge valve according to claim 4, wherein a reinforcing steel is poured on one side of the diaphragm.
[5] The apparatus according to claim 4, wherein the diaphragm is provided with a diaphragm cup through which the valve rod penetrates, and a valve disc ring is formed on a lower surface of the diaphragm to receive a hollow protruding boss of the valve disc. Surge Valve.
delete The expansion chamber type anti-surge valve according to claim 1, wherein the valve disc further includes an O-ring, and the O-ring is fitted to the valve disc to surround the valve rod.
The valve body according to claim 1, wherein the valve body is formed with a body flange through which the fastening member passes, an airtight groove formed in a rim of the body flange so as to fit the rim of the diaphragm, And a valve seat seating surface in contact with the disc. The expansion chamber type anti-surge valve according to claim 1, wherein the valve cover includes a cover flange through which the fastening member passes, and a valve guide boss in which the valve guide is located.
The expansion chamber type anti-surge valve according to claim 1, wherein the fastening member comprises at least four fastening members (9), and the valve body and the valve cover are evenly tightened.
An anti-surge valve comprising: the anti-surge valve according to any one of claims 1 to 6;
A turbine rotating with exhaust gas from an engine through an exhaust manifold; and a turbocharger having a compressor that compresses the air introduced into the air duct to form the supercharged intake air;
A throttle valve for supplying the supercharged intake air cooled by the intercooler to the engine and changing the supercharged intake air flow rate; and a control unit for controlling the supercharged intake air at a front end portion of the throttle valve to a bypass chamber of the anti- An intake manifold for transmitting pressure from the supercharged intake at a rear end portion of the throttle valve to a control pressure chamber of the anti-surge valve;
A bypass line connected to the anti-surge valve and adapted to feedback the supercharged intake air from the anti-surge valve to the compressor of the turbocharger;
And a control unit for controlling the operation of the turbocharger.

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