KR20230085581A - Integrated Air Control Valve of single-shaft two-valve type - Google Patents

Abstract

A function-integrated air control valve of a single-shaft and two-valve type is disclosed. The function-integrated air control valve of a single-shaft and two-valve type includes: a valve housing including an air inlet passage and an air outlet passage sided by side on the left and right formed to be connected to the air inlet and air outlet of a fuel cell stack; an inlet valve seat installed in the air inlet passage to form an inlet gate; an outlet valve seat installed in the air outlet passage to form an outlet gate; a valve shaft installed across the air inlet passage and the outlet passage; a driving unit rotating the valve shaft; a blocking valve body installed on the valve shaft so as to be inside the air inlet passage and opening and closing the inlet gate by rotation of the valve shaft; and a control valve body installed on the valve shaft so as to be inside the outlet passage, rotating integrally with the blocking valve body, closing the outlet gate in a section in which the blocking valve body closes the inlet gate, and adjusting the opening amount of the outlet gate in at least some sections in which the blocking valve body opens the inlet gate. Accordingly, economic efficiency improves by reducing the number of parts.

Description

Integrated Air Control Valve of single-shaft two-valve type}

The present invention relates to a fuel cell valve that can be applied to an air supply system of a fuel cell, and more particularly, to a fuel cell air supply system in which the functions of an air shutoff valve and an air pressure control valve are integrated. It relates to a two-valve type air control valve with integrated functions.

In general, a hydrogen fuel cell system supplies fuel to hydrogen and an oxidizer to an anode to produce electrical energy through a chemical reaction occurring therebetween, and is used in a hydrogen vehicle, which is an environmentally friendly future vehicle. Air containing oxygen is used as the oxidizing agent, and pure hydrogen or hydrocarbon-based fuel (LNG, LPG, CH ₃ OH) or reformed gas containing a large amount of hydrogen generated by reforming hydrocarbon-based fuel is used as the fuel.

In such a hydrogen fuel cell system, an air supply system is installed to supply air, which is an oxidizing agent, and the air supply system must block air as part of a method to prevent a reaction between air and fuel when the operation of the fuel cell stack is stopped. , For this purpose, an air shut-off valve (SIV: STACK air isolation 　Valve) is installed. In addition, in the hydrogen fuel cell system, the amount of opening on the exhaust side can be variably adjusted to adjust the internal pressure of the fuel cell stack that optimally matches the driving condition by discharging wet air generated inside the fuel cell stack to the outside. An air pressure control valve (SPC: STACK Pressure Control valve) is installed.

In other words, in the prior art, an air shut-off valve (SIV: STACK air isolation valve) for blocking (sealing) the inflow of air by blocking (sealing) the air inlet/outlet when the fuel cell starts and stops for the realization of a hydrogen fuel cell system and fuel In order to control cell operation efficiency, an air supply system including all air pressure control valves (SPC: STACK Pressure Control valve) that regulates the internal pressure of the fuel cell stack by adjusting the opening of the air outlet passage is used.

On the other hand, the hydrogen fuel cell system requires light weight to improve the fuel efficiency of hydrogen vehicles. The volume and weight of the air supply system including the air cut-off valve and the air pressure control valve are large, so the weight is reduced and thus the fuel efficiency of hydrogen vehicles is improved. followed by restrictions. In addition, there is a problem that the load of the vehicle control unit, that is, the electronic control unit (ECU) is large due to many electrification parts entering the system.

Publication No. 10-2018-0074216 (published on July 3, 2018) Registration No. 10-2242020 (registered on April 13, 2021)

The problem to be solved by the present invention is to integrate the function of the air shutoff valve and the function of the air pressure control valve to realize weight reduction for fuel efficiency, reduce the load of the ECU when applying hydrogen vehicles, and reduce the number of parts. It is to provide a function-integrated air control valve of a 1-axis 2-valve type with improved economic efficiency due to reduction.

A function-integrated air control valve for a hydrogen fuel cell according to an aspect of the present invention includes: a valve housing including an air inlet passage and an air outlet passage formed to be connected to an air inlet and an air outlet of a fuel cell stack side by side; an inlet valve seat installed in the air inlet passage to form an inlet gate; an outlet valve seat installed in the air outlet passage to form an outlet gate; a valve shaft installed to cross the air inlet passage and the outlet passage; a driving unit for rotationally driving the valve shaft; a shut-off valve body installed on the valve shaft so as to be inside the air inlet passage and opening and closing the inlet gate by rotation of the valve shaft; and is installed on the valve shaft so as to be inside the outlet passage, rotates integrally with the shutoff valve body, and closes the outlet gate in a section where the shutoff valve body closes the inlet gate, and the shutoff valve body includes a control valve body for adjusting an opening amount of the outlet gate in at least a portion of a section in which the inlet gate is opened.

The inlet valve seat includes one inlet valve seat surface and an opposite inlet valve seat surface facing each other on a first virtual circle on a cross section perpendicular to the valve shaft, and the outlet valve seat includes a cross section perpendicular to the valve shaft. and a one-side outlet valve seat surface and an opposite-side outlet valve seat surface facing each other on a second imaginary circle, wherein the shut-off valve body, at an angular position at which the valve shaft rotates, the one-side inlet valve seat surface and the one-side outlet valve seat surface face each other. It may include a blocking valve plate having a first blocking arc area and a second blocking arc area passing through the first imaginary circle on both sides so as to contact the opposite inlet valve seat surface at the same time.

The control valve body includes a first control arc area and a second control arc area simultaneously contacting the one outlet valve seat surface and the opposite outlet valve seat surface at the rotation start angle of the valve shaft, and the second control valve body. A third control arc area that forms a predetermined angle with the arc area and does not contact the outlet valve seat surface may be included passing through the second imaginary circle.

At the angle of rotation of the valve shaft when the inlet gate is fully opened for the first time, the second control arc area faces the one-side outlet valve seat surface in a spaced apart state, and the third control arc area faces the opposite outlet valve seat surface. Facing the seat surface at a distance from each other, while the valve shaft further rotates to the maximum operating angle beyond the rotation angle position of the valve shaft when the inlet gate is first fully opened, the shut-off valve body While maintaining the inlet gate in a fully open state, the control valve body may change an opening amount of the outlet gate.

The center of the first imaginary circle may be eccentric in X and Y axes with respect to the center of the valve shaft, and the center of the second imaginary circle may be eccentric in X and Y axes with respect to the center of the valve shaft.

The shape of the cut-off valve body and the shape of the control valve body may be configured differently.

The air control valve for a hydrogen fuel cell according to the present invention integrates the functions of an air cut-off valve and an air pressure control valve to realize weight reduction for fuel efficiency and reduce the load of the ECU when applying a hydrogen vehicle. , it has the advantage of improved economic feasibility by reducing the number of parts.

1 is a perspective view illustrating a function-integrated air control valve according to an embodiment of the present invention.
2 is a plan view illustrating a function-integrated air control valve according to an embodiment of the present invention.
3 is a cut-away perspective view of a function-integrated air control valve according to an embodiment of the present invention.
4 is a perspective view illustrating a coupling structure of a valve shaft, a shutoff valve body, and a control valve body.
5 is a cross-sectional view taken by cutting the center of the shut-off valve body in a direction perpendicular to the valve shaft.
6 is a cross-sectional view taken by cutting the center of the control valve body in a direction perpendicular to the valve shaft.
7 illustrates changes in opening and closing states and opening amounts of an inlet gate and an outlet gate according to a change in rotational angle of a valve shaft.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. This invention may be embodied in many different forms and is not limited to the embodiments set forth herein.

In describing the present invention, the size or shape of the components shown in the drawings may be exaggerated or simplified for clarity and convenience of explanation.

In addition, terms specifically defined in consideration of the configuration and operation of the present invention may vary according to the intentions or customs of users and operators. These terms should be interpreted as meanings and concepts corresponding to the technical spirit of the present invention based on the contents throughout this specification.

In order to clearly explain the present invention, descriptions of parts not related to the technical spirit of the present invention are omitted, and the same reference numerals are given to the same or similar components throughout the specification.

In addition, in various embodiments, components having the same configuration will be described only in representative embodiments using the same reference numerals, and in other embodiments, only configurations different from the representative embodiments will be described.

Throughout the specification, when a part is said to be “connected” to another part, this includes not only a case where it is “directly connected” but also a case where it is “indirectly connected” through another member. In addition, when a certain component is said to "include", it may mean that it further includes other components rather than excluding other components unless otherwise stated.

A function-integrated air control valve according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7 .

1 is a perspective view showing a function-integrated air control valve according to an embodiment of the present invention, FIG. 2 is a plan view showing a function-integrated air control valve according to an embodiment of the present invention, and FIG. It is a cut-away perspective view of a function-integrated air control valve according to an embodiment, and FIG. 4 is a perspective view showing a coupling structure of a valve shaft, a shut-off valve body, and a control valve body, and FIG. 5 is a shut-off valve in a direction orthogonal to the valve shaft. 6 is a cross-sectional view of the control valve body cut through the center of the body in a direction orthogonal to the valve shaft, and FIG. 7 is an inlet gate and an outlet gate according to a change in the rotational angle of the valve shaft. It shows the opening/closing state and the change in opening amount.

As shown in FIGS. 1 to 7 , the function-integrated air control valve according to the first embodiment of the present invention is applied to the hydrogen fuel cell system, and the function of the STACK air isolation valve (SIV) and the air It is configured to integrally perform the function of a pressure control valve (SPC: STACK Pressure Control valve), and the valve housing 100 including an air inlet passage 102 and an air outlet passage 104 formed side by side, An inlet valve seat 200 installed in the upper opening of the air inlet passage 102 to form one inlet gate 2 and an inlet valve seat 200 installed in the upper opening of the air outlet passage 104 to form one inlet gate 2. An outlet valve seat 300 forming the outlet gate 4, a valve shaft 400 installed to cross the air inlet passage 102 and the outlet passage 104 from side to side, A drive unit 500 for rotationally driving the valve shaft 400, installed on the valve shaft 400 so as to be inside the air inlet passage 102, and the inlet gate ( 2) is installed on the valve shaft 400 so as to open and close the shutoff valve body 600 and the outlet passage 104, and rotates integrally with the shutoff valve body 600, and the shutoff valve body ( 600 closes the outlet gate 4 in a section in which the inlet gate 2 is closed, and in at least a part of the section in which the shut-off valve body 600 opens the inlet gate 2, the outlet It includes a control valve body 700 that adjusts the pressure of the fuel cell stack (not shown) by adjusting the opening amount of the gate 4 .

The valve housing 100 includes a flat upper surface 110 coupled to a fuel cell stack (not shown) and a front surface 120 orthogonal to the upper surface 110 . A gasket 115 is installed on the upper surface 110 to ensure airtightness between the upper surface 110 and the fuel cell stack. The air inlet passage 102 is arranged to be connected to an air inlet (not shown) of the fuel cell stack, and the air outlet passage 104 is arranged to be connected to an air outlet (not shown) of the fuel cell stack.

The upper opening of the air inlet passage 102 and the upper opening of the air outlet passage 104 are provided with an inlet valve seat 200 and an outlet valve seat 300 formed in a ring shape and selectively performing a sealing function, and A substantially circular inlet gate 2 is formed inside the valve seat 200 and a substantially circular outlet gate 4 is formed inside the outlet valve seat 300 . The front opening of the air inlet passage 102 and the front opening of the air outlet passage 104 are parallel to the front face 120 of the valve housing 100 . In this embodiment, the front opening of the air inlet passage 102 is formed therein by a circular inlet pipe 122 extending forward from the front face 120, and the air outlet passage 114 has a circular shape. It is formed inside it by the outlet tube 124.

The air inlet passage 102 and the outlet passage 104 are separated from each other by a partition wall provided in the valve housing 100 . The above-described valve shaft 400 is rotatably installed through shaft holes formed in both side walls and partition walls of the valve housing 100, and airtightness is maintained between the valve shaft 400 and the inner circumferential surfaces of the shaft holes, so that the valve shaft ( 400) does not occur through the shaft hole inserted.

The inlet valve seat 200 has one side inlet valve seat surface 220a and the opposite side inlet valve seat facing each other on a first imaginary circle A1 on a cross section orthogonal to the valve shaft 400. It includes face 220b. The one side inlet valve seat surface 220a and the opposite side inlet valve seat surface 220b may include an arc shape of a first imaginary circle A1 passing through them. In addition, the inlet valve seat 200 may perform a seal function to secure airtightness.

The outlet valve seat 300 has one side outlet valve seat surface 320a and the opposite side outlet valve seat facing each other on a second imaginary circle A2 on a cross section orthogonal to the valve shaft 400. It includes face 320b. The one side outlet valve seat surface 320a and the opposite side outlet valve seat surface 320b may have an arc shape of a second imaginary circle A2 passing through them. In addition, the outlet valve seat 300 may perform a seal function to secure airtightness.

The shut-off valve body 600 and the control valve body 700 are integrally coupled to the valve shaft 400 and rotate simultaneously by the rotation of the valve shaft 400 . As mentioned above, according to the rotation of the valve shaft 400, the shut-off valve body 600 opens or closes the inlet gate 2 formed by the inlet valve seat 200, and the control valve body ( 700 controls the pressure inside the fuel cell stack (not shown) by closing the outlet gate 4 formed by the outlet valve seat 300 or adjusting the opening amount of the outlet gate 4.

When the valve shaft 400 is at a certain rotation operating angle, the shut-off valve body 600 and the control valve body 700 make the inlet gate 2 and the outlet gate 4 into a closed closed state. . In addition, as the valve shaft 400 rotates in one direction in the closed state, the inlet gate 2 of the shut-off valve body 600 is opened, and the control valve body 700 rotates the valve shaft 400 The amount of opening of the outlet gate 4 is changed within a predetermined rotation operating range of. An angular section in which the shut-off valve body 600 and the control valve body 700 close (close) the inlet gate 2 and the outlet gate 4 is less than 20 degrees, and at least part of the remaining angular sections By setting the section as the section for adjusting the opening amount of the outlet gate 4 by the control valve body 700, the shut-off function and the pressure control function can be simultaneously implemented.

In this specification, as shown in FIG. 7 , assuming that the rotation start angle of the valve shaft 400 is 0 degrees, the rotation angle of the valve shaft 400 when the inlet gate 2 is fully opened for the first time. Assume that is 90 degrees. When the rotation start angle of the valve shaft 400, that is, the rotation angle is 0 degrees, the cut-off valve body 600 and the control valve body 700 are connected to the inlet gate 2 and the outlet gate 4 ) is in the immersion state that closes.

In this case, the shut-off valve body 600 opens the inlet gate 2 and the control valve body 700 almost closes the outlet gate 4 until the valve shaft 400 passes through 0 degrees and reaches an angle of 90 degrees. It can be seen that it is placed in the state of the minimum opening amount. When the valve shaft 400 has a rotation angle of 90 degrees, the inlet gate 2 first has a completely open state.

Thereafter, while the valve shaft 400 is additionally rotated to the maximum operating angle after passing through the 90-degree rotation angle position of the valve shaft 400, for example, the rotation operating angle changes from 90 degrees to 135 degrees to 180 degrees. While doing this, the fully open state of the inlet gate 2 by the shutoff valve body 600 is maintained, and the opening amount of the outlet gate 4 by the control valve body 700 is the rotation angle of the valve shaft 400. may increase gradually as Accordingly, both air cut-off control and air pressure control can be performed by rotation of the valve shaft 400 and the shut-off valve body 600 and control valve body 700 coupled thereto.

The shut-off valve body 600 is in a closed state, that is, when the rotation start angle position of the valve shaft 400, that is, when the rotation angle is 0 degrees, the one side inlet valve seat surface 220a and the opposite side inlet valve seat surface and a substantially arcuate shut-off valve plate portion 620 blocking the inlet gate 2 by contacting 220b. In addition, the shutoff valve body 600 is formed on both sides of the shutoff valve plate portion 620 and includes a pair of side plate portions 640 and 640 through which the valve shaft 400 is coupled. Also, the shut-off valve body 600 includes an empty space between the pair of side plate portions 640 and 640, and the empty space is open to both left and right sides. In the closed state, that is, when the rotation operating angle of the valve shaft 40 is 0 degrees, the shut-off valve plate part 620 has the one side inlet valve seat surface 220a and the opposite side inlet valve seat surface 220b Equipped with a first cut-off arc region 622a and a second cut-off arc region 622b on both sides, which contact at the same time. At this time, the first blocking arc area 622a and the second blocking arc area 622b pass through the first imaginary circle A1. Although the first cut-off arc area 622a and the second cut-off arc area 622b are divided by a straight line area in the middle, the middle area also includes the first cut-off arc area 622a or the second cut-off arc area ( 622b) may be a continuous circular arc area.

The center C1 of the first imaginary circle A1 is eccentric from the center C0 of the valve shaft 400 by a predetermined distance in the X and Y axes, for example, by 1 mm, respectively. Preferably, the angle between the first blocking arc area 622a and the second blocking arc area 622b is about 90 degrees to about 120 degrees. When the valve shaft 400 whose rotation angle is 0 degrees is rotated by 90 degrees and the rotation angle reaches 90 degrees, the first blocking arc area 622a moves away from the inlet valve seat surface 220a on one side, but 0 degrees The second blocking arc area 622b, which was in contact with the opposite side inlet valve seat surface 220b at the rotational operating angle, moves to a position facing the one side inlet valve seat surface 220a. Since the center C1 of the first imaginary circle A1 and the center of the valve shaft C0 are eccentric in the X-axis and the Y-axis, at this time, the second blocking arc area 622b is the one-side inlet valve seat surface 220a. ), it is spaced apart from the pull-side valve seat surface 220a even in a state of facing.

When the center C0 of the valve shaft 400 does not coincide with the center C1 of the first imaginary circle A1 and is eccentric, that is, when the rotation angle of the valve shaft 400 is around 0 degrees. Only, the inlet valve seat 200 and the shut-off valve body 600 contact each other, and the inlet valve seat 200 and the shut-off valve body 600 are spaced apart from each other in the remaining angular section, allowing the inlet gate 2 to be opened. When the center (C1) of the first imaginary circle (A1) and the center (C0) of the valve shaft 400 are eccentric with respect to only one of the X axis and the Y axis, the inlet valve seat at a specific angle or a specific angle section. Unwanted friction may occur between the valve 200 and the shut-off valve body 600, but in this embodiment, the center C1 of the first imaginary circle A1 and the center C0 of the valve shaft 400 are Since they are eccentric at the same distance on both the X and Y axes, unwanted friction between the inlet valve seat 200 and the shut-off valve body 600 can be prevented from occurring. It can be seen that the open state of the inlet gate 2 is maintained even when the rotation angle of the valve shaft 400 is 135 and 180 degrees.

The control valve body 700 contacts the one-side outlet valve seat surface 320a and the opposite outlet valve seat surface 320b in a closed state, that is, when the rotation angle of the valve shaft 400 is 0 degrees, It includes a control valve plate part 720 that blocks the outlet gate 4 and adjusts the amount of opening of the outlet gate 4 according to the rotation angle after the outlet gate 4 is rotated beyond a certain angle. In addition, the control valve body 700 is formed on both sides of the control valve plate part 720 and includes a pair of side plate parts 740 and 740 through which the valve shaft 400 is coupled. Also, the control valve body 700 includes an empty space between the pair of side plate portions 740 and 740 .

The control valve plate part 720 includes a first control arc area 722a, a second control arc area 722b, and a third control arc area 722c within a predetermined angle range. The first control arc area 722a, the second control arc area 722b, and the third control arc area 722c pass through the second imaginary circle A2 in common. Based on the center C2 of the second imaginary circle A2, the first control arc area 722a and the second control arc area 722b form an interval of about 90 degrees, and the second control arc area 722b and the third control arc area 722b The control arc regions 722c are spaced approximately 90 degrees apart. The first control arc area 722a, the second control arc area 722b, and the third control arc area 722c may be in one continuous arc area.

When the rotation angle of the valve shaft 400 is 0 degrees, the first control arc area 722a and the second control arc area 722b are the one outlet valve seat surface 320a and the opposite outlet valve seat surface. (320b) at the same time airtightly closes the outlet gate (4). As described above, in the vicinity of the 0 degree rotation angle of the valve shaft 400, the inlet gate 2 and the outlet gate 4 are completely blocked by the cut-off valve body 600 and the control valve body 700, and the fuel cell stack Air supply to (not shown) is cut off.

The center C2 of the second imaginary circle A2 is eccentric from the center of the valve shaft 400 in the X and Y axes by a predetermined distance, for example, 1 mm, respectively. When the valve shaft 400 whose rotation operating angle is 0 degrees is rotated by 90 degrees and the rotation angle reaches 90 degrees, the first control arc area 722a is out of the one-side outlet valve seat surface 320a, but the rotation angle is 0 degrees. The second control arc area 722b, which was in contact with the opposite outlet valve seat surface 320b at the rotational operating angle, moves to a position facing the one outlet valve seat surface 320a while being slightly spaced apart, and participates in air opening amount control. The third control arc area 722c, which was not released, moves to a position where it faces the opposite outlet valve seat surface 320b at a slight distance from it. In the state where the outlet gate 4 is rotated 90 degrees, the outlet gate 4 is in a state of almost minimum opening amount, and in this state, the opening amount is gradually changed by the rotation of the control valve body 700 according to the additional rotation of the valve shaft 400. .

Since the center C2 of the second imaginary circle A2 and the center C0 of the valve shaft 400 are eccentric to the X and Y axes, the second and third control valve body 700 rotated 90 degrees. The control arc regions 722b and 722c are spaced apart from each other while facing the one-side outlet valve seat surface 320a and the opposite outlet valve seat surface 320b. When the center C0 of the valve shaft 400 does not coincide with the center C2 of the second imaginary circle A2 and is eccentric, that is, when the rotation angle of the valve shaft 400 is around 0 degrees. In this case, the control valve body 700 completely blocks the outlet gate 4 and allows the opening amount of the outlet gate 4 to be controlled by the rotation of the control valve body 700 in most of the remaining angular sections. When the center (C2) of the second imaginary circle (A2) and the center (CO) of the valve shaft 400 are eccentric with respect to only one axis of the X axis and the Y axis, the outlet valve seat 300 in the 90 degree section Although unwanted friction may occur between the control valve body 700 and the control valve body 700, in this embodiment, the center C2 of the second imaginary circle A2 and the center C0 of the valve shaft 400 are aligned with the X-axis. Since the Y-axis is eccentric at the same distance, unwanted friction between the outlet valve seat 300 and the control valve body 700 can be prevented. As the rotation angle of the valve shaft 400 changes from 90 degrees to 135 degrees to 180 degrees, it can be seen that the opening degree of the outlet gate 4 gradually changes. It is possible to control the internal pressure of the fuel cell stack by changing the opening amount of the outlet gate 4 .

As described above, the air control valve for a hydrogen fuel cell according to the present invention integrates the functions of an air cutoff valve and an air pressure control valve to realize weight reduction for fuel efficiency and, when applied to a hydrogen vehicle, the ECU It can reduce the load and has the advantage of improved economic efficiency due to the reduction in the number of parts.

In the above, the present invention has been described in detail using preferred embodiments, but the scope of the present invention is not limited to specific embodiments, and should be interpreted according to the appended claims. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

100: valve housing 200: inlet valve seat
300: outlet valve seat 400: valve shaft
500: driving unit 600: shut-off valve body
700: control valve body

Claims (6)

a valve housing including left and right air inlet passages and air outlet passages formed to be connected to the air inlet and air outlet of the fuel cell stack;
an inlet valve seat installed in the air inlet passage to form an inlet gate;
an outlet valve seat installed in the air outlet passage to form an outlet gate;
a valve shaft installed to cross the air inlet passage and the outlet passage;
a driving unit for rotationally driving the valve shaft;
a shut-off valve body installed on the valve shaft so as to be inside the air inlet passage and opening and closing the inlet gate by rotation of the valve shaft; and
It is installed on the valve shaft so as to be inside the outlet passage, rotates integrally with the shut-off valve body, closes the outlet gate in a section where the shut-off valve body closes the inlet gate, and the shut-off valve body and a control valve body for controlling an opening amount of the outlet gate in at least a partial section among sections in which the inlet gate is opened. The method of claim 1,
The inlet valve seat includes one inlet valve seat surface and an opposite inlet valve seat surface facing each other on a first imaginary circle on a cross section orthogonal to the valve shaft,
The outlet valve seat includes one outlet valve seat surface and an opposite outlet valve seat surface facing each other on a second imaginary circle in a cross section orthogonal to the valve shaft,
The blocking valve body may include a first blocking arc area and a second blocking arc passing through the first imaginary circle so as to simultaneously contact the one side inlet valve seat surface and the opposite side inlet valve seat surface at the rotation start angle of the valve shaft. A function-integrated air control valve comprising a shut-off valve plate having zones on both sides. The method of claim 2,
The control valve body includes a first control arc area and a second control arc area simultaneously contacting the one outlet valve seat surface and the opposite outlet valve seat surface at the rotation start angle of the valve shaft, and the second control valve body. and a third control arc area that forms a predetermined angle with the arc area and does not contact the outlet valve seat surface passing through the second imaginary circle. The method of claim 3,
At the angle of rotation of the valve shaft when the inlet gate is fully opened for the first time, the second control arc area faces the one-side outlet valve seat surface in a spaced apart state, and the third control arc area faces the opposite outlet valve seat surface. Facing the seat surface at a distance,
The shut-off valve body maintains the inlet gate in a fully open state while the valve shaft further rotates to the maximum operating angle beyond the rotational angular position of the valve shaft when the inlet gate is initially fully opened, The function-integrated air control valve, characterized in that the control valve body changes the opening amount of the outlet gate. The method of claim 4,
The center of the first virtual circle is eccentric in the X and Y axes with respect to the center of the valve shaft, and the center of the second virtual circle is eccentric in the X and Y axes with respect to the center of the valve shaft. function integrated air control valve. The method of claim 1,
A function integrated air control valve, characterized in that the shape of the cut-off valve body and the shape of the control valve body are different.

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