KR101567435B1 - 3-way valve apparatus for electrical driving type vehicle - Google Patents

Abstract

The present invention relates to a three-way valve for cooling water of an electric vehicle. The valve for an electric vehicle controls the circulation of the cooling water by being installed in a cooling water circulation circuit of the vehicle using electricity as motive power. The valve for the cooling water for an electric vehicle includes: a valve body; a valve member located in the inner space of the valve body and opening and closing a first output port or a second output port; a power transmitting module connected to the valve member and moving the valve member to the first output port or the second output port; and a power providing unit providing power for the power transmitting module. The valve body comprises: an input port wherein the heat-exchanged cooling water is inputted by passing through a motor; the first output port transmitting the cooling water supplied through the input port to a chiller; and the second output port transmitting the cooling water supplied through the input port to an on-board charger (OBC).

Description

[0001] The present invention relates to a three-way valve for an electric powered vehicle,

The present invention relates to a cooling three-way valve for an electric powered vehicle, and more particularly, to a three-way valve for cooling an electric powered vehicle in which the flow of cooling water is intermittently controlled so that the cooling water heat exchanged via a motor can be supplied to a cooling device or a vehicle- To an electric powered vehicle cooling water valve.

Electric vehicles (EV) are the most promising alternatives to solve future automobile pollution and energy problems.

Electrically driven vehicles are classified into fuel cell driven type driven by electricity generated by chemical change and secondary battery or battery powered powered by AC or DC motor through battery power, And a method of obtaining power by supplying electric power in other ways. Such an electric drive vehicle generates a large amount of heat when electric power is supplied to the driving portion of the vehicle.

In addition, the electric drive automobile has a problem in that when the waste heat is generated, the resistance rises together to accelerate the discharge, reduce the charging efficiency and the discharge efficiency, and shorten the service life. Therefore, a cooling water circulation circuit is provided for cooling the heat appropriately.

In the electric driving type vehicle, a refrigerant circulation circuit for cooling and heating indoor space, an air circulation circuit for ventilation of indoor air, and the like are provided in a similar manner to a conventional internal combustion engine vehicle.

As described above, the electric drive vehicle is provided with various types of valve devices capable of distributing, controlling, and controlling the flow of the fluid to the air circulation circuit, the circulation circuit of the refrigerant, and the like, as well as the cooling water circulation circuit of the battery.

Among these various types of valve devices, a rotary valve includes a valve body having two or more ports and a valve member rotatable about a rotation axis in the valve body to selectively open and close two or more ports. Such a rotary valve is often used for a cooling water circulation circuit of a battery.

An example of such a rotary valve is disclosed in US 6315267 B1 (hereinafter referred to as Patent Document 1). The rotary valve according to the related art includes a valve body having an inlet port and an outlet port communicating with a valve chamber; A valve member rotatably installed in the valve chamber between an open position and a closed position; A curved resilient seal member interposed between any one of the inlet port and the outlet port and the valve member; A torque motor attached to the valve body to rotate the valve member; And spring means for elastically biasing the rotor and the valve member of the torque motor to open.

This prior art rotary valve is characterized in that when the inlet port or the outlet port of the valve body is opened by the rotation of the valve member, the elastic sealing member is elastically interposed between the port of the valve body and the valve member, And is configured to be sealed to prevent leakage of the fluid.

However, the conventional rotary valve is disadvantageous in that the sealing force of the elastic sealing member is weak, and the sealing property of the valve body to the inflow port or the outflow port is low, so that the fluid leaks to a great extent.

US 6315267 B1 (Nov. 13, 2001)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a cooling three-way valve of an electrically driven vehicle capable of reliably sealing the outflow port and valve member formed in the valve body, The purpose is to provide.

In addition, the structure of the valve member provided inside the valve body is simplified, and the electric power supplied to the valve member is supplied to the power supply so as to minimize the load, thereby precisely controlling the flow of the cooling water. A three-way valve is provided.

According to an aspect of the present invention, there is provided an electrically driven valve device for an automobile, which is installed in a cooling water circulation circuit of a vehicle powered by electric power and controls the circulation of cooling water, A first output port for sending an input port for inputting cooling water and a cooling water supplied through the input port to a cooling device and a cooling water supplied through the input port to an on-board charger A valve member which is located in an internal space of the valve body to open and close the first output port or the second output port and a valve member which is connected to the valve member to connect the valve member to the first output port, Or a second output port, and a power providing unit for providing power to the power transmission module Way valve of the drive vehicle.

Here, it is preferable that the valve member has a spherical shape and is in line contact with the first output port or the second output port.

Further, the valve member may have a shape of a sphere, and coupling grooves may be formed at one side and the other side of the valve member. The power transmission module may have a coupling portion inserted into one of the coupling grooves formed at one side and the other side of the valve member, And a pivot arm connected to the main shaft and pivotally rotating according to the operation of the power providing portion, and a fixing pin inserted into the valve member through the free end of the coupling portion.

Preferably, the valve member is formed with protrusions extending toward the pivot arm between the coupling grooves formed at one side and the other side, and the protrusions are inserted into the seating portion formed between the engaging portions of the pivot arm.

The power transmission module includes a pivot arm connected to the main shaft of the power providing portion and pivotally rotated according to the operation of the power providing portion. The valve member is coupled to the free end of the pivot arm by a hinge pin, It is preferable that the valve member rotates at the end.

It is preferable that the first output port and the second output port are provided with a seat ring on a valve seat in line contact with the valve member, wherein the seat ring has a spherical surface formed in a portion contacting the valve member, .

Preferably, the valve member has a cylindrical shape and is in surface contact with the first output port or the second output port by moving linearly between the first output port and the second output port.

Here, the power transmission module includes a rotating member that is rotated by the power of the power providing unit, and a converting member that is integral with the valve member and converts the rotational motion of the rotating member into linear motion to linearly move the valve member, Wherein the rotary member includes a pinion that is connected to a main shaft of the power providing portion and rotates in a forward or reverse direction in accordance with an operation of the power providing portion, and the converting member includes a rack which is engaged with the pinion and is integrally formed with the valve member .

In addition, the first output port and the second output port are provided with a seat ring on a valve seat which is in surface contact with the valve member, and the valve member has an insertion portion inserted into the inner diameter of the seat ring at both side ends thereof, And an extension portion formed around the rear outer diameter and in surface contact with the seat ring.

According to the cooling-accommodating three-way valve of the electrically driven vehicle according to the present invention, the cooling water heat-exchanged via the motor is opened and closed through the first output port through the cooling device or the second output port so as to flow into the vehicle- The valve member has a simple structure in which each output port is opened or closed by rotating or linearly moving by the pivot arm, thereby improving the sealing performance with respect to the output port.

Further, the present invention has a structure in which the valve member linearly moves between the first output port and the second output port to close the first output port, thereby reducing the load of the power providing unit even if a large pressure is formed in the internal space of the valve body, Or the flow rate of the cooling water supplied to the second output port can be precisely controlled.

1 is an exploded perspective view showing a first embodiment of a three-way valve for cooling the electric powered vehicle according to the present invention.
Fig. 2 is an engagement sectional view of a cooling-accommodating three-way valve of the electrically driven vehicle according to the first embodiment.
Figs. 3 and 4 are sectional views showing an operating state of the cooling-accommodating three-way valve of the electrically driven vehicle according to the first embodiment.
5 is a cross-sectional view showing still another modification of the first embodiment.
6 is an exploded perspective view showing a second embodiment of a three-way valve for cooling the electric powered vehicle according to the present invention.
7 is an engagement sectional view of a cooling-accommodating three-way valve of the electrically driven vehicle according to the second embodiment.
Figs. 8 and 9 are cross-sectional views showing an operating state of the cooling-accommodating three-way valve of the electrically driven vehicle according to the second embodiment.
10 is a cross-sectional view showing still another modification of the second embodiment.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor may properly define the concept of the term to describe its invention in the best possible way And should be construed in accordance with the principles and meanings and concepts consistent with the technical idea of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First Embodiment

Fig. 1 is an exploded perspective view showing a first embodiment of a cooling-accommodating three-way valve of an electrically driven vehicle according to the present invention, Fig. 2 is an engaging sectional view of a cooling- to be.

The cooling three-way valve of the electrically driven vehicle according to the first embodiment is installed in an electric drive vehicle installed in a cooling water circulation circuit of a vehicle powered by electricity and controlling the circulation of cooling water So that the heat exchanged cooling water can be sent to the cooling device or the vehicle-mounted charger via the motor.

The three-way valve for cooling the electric powered vehicle of the present invention comprises a valve body 100, a valve member 200, a power transmission module 300, and a power supply (not shown) The first output port 120 and the second output port 130 are formed in three directions of the body 100 and the second output port 130 is formed between the first output port 120 and the second output port 130. [ The valve member 200 is positioned and opens or closes the first output port 120 or the second output port 130 as the valve member 200 moves.

The main shaft 410 of the power providing part and the valve member 200 are connected to the power transmission module 300 (not shown) And the valve member 200 closes the first output port 120 or the second output port 130 in accordance with the rotation of the main shaft 410 to connect the valve body 100 through the input port 110 The flow of the cooling water supplied to the internal space is interrupted.

The valve body 100 forms an input port 110, a first output port 120 and a second output port 130. The input port 110 is connected to the input / And the first output port 120 and the second output port 130 are connected to a cooler or an on-board charger (OBC) for supplying cooling water supplied through the input port 110 to a cooling device or an on- to be.

The first output port 120 and the second output port 130, which are configured to send the cooling water supplied to the valve body 100 to the cooling device or the on-board type charger, The first output port 120 or the second output port 130 is closed according to the movement of the valve member 200 which is formed on the concentric circle and connected to the power transmission module 300.

The valve body 100 has an inlet port 110, a first output port 120 and a second outlet port 130. The valve body 100 is connected to the valve body 100 through an input port 110, For opening and closing the first output port (120) or the second output port (130) to send the first output port (120) or the second output port (130) to the cooling device or the vehicle onboard charger through the first output port Is installed.

The valve member 200 has a spherical shape as shown in FIGS. 1 to 5 and comes into line contact with the first output port 120 or the second output port 130. That is, the valve member 200 has a shape of a sphere having a diameter larger than an inner diameter diameter of the first output port 120 and the second output port 130 and has a first output port 120 and a second output port 130, And closes the first output port 120 or closes the second output port 130 as the valve member 200 moves.

The valve member 200 is connected to the power transmission module 300 and is moved to the first output port 120 or the second output port 130. The valve member 200 and the power transmission module 300 The valve member 200 is formed with a coupling groove 210 recessed at one side and the other side and the power transmission module 300 is coupled to the valve member 200 by the pivot arm 310. [

That is, the pivot arm 310 of the power transmission module 300 is formed with a coupling portion 311 to be inserted into the coupling groove 210 formed at one side and the other side of the valve member 200, And the valve member 200 is connected to the first output port 120 or the second output port 130 by pivoting according to the operation of the power providing unit.

At this time, the free end of the coupling portion 311 is penetrated by the fixing pin 320, so that the valve member 200 is fixed to the free end of the coupling portion 311. A pivot arm 310 is provided between the coupling groove 210 formed at one side and the other side of the valve member 200 so that the valve member 200 fixed to the free end of the coupling portion 311 can be more firmly fixed. A protruding portion 220 extending from the protruding portion 220 is formed between the protruding portion 220 and the seating portion 330 so that the protruding portion 220 is inserted into the protruding portion 220, The valve member 200 can be firmly fixed to the pivot arm 310 according to the engagement.

When the valve member 200 is connected to the power supplier by the pivot arm 310, the main shaft 410 rotates in accordance with the operation of the power providing unit to pivot the pivot arm 310. At this time, And may be implemented by a motor that rotates at a certain angle according to a pulse signal such as a stepping motor.

The pivot arm 310 is connected to the main shaft 410 of the power providing unit. The pivot arm 310 is formed with an insertion hole 312 into which the main shaft 410 is inserted. The pivot arm 310 and the main shaft 410 are fixed by key engagement so that the pivot arm 310 is pivoted in the same manner as the main shaft 410 is rotated. A snap ring fixing groove 414 with a snap ring 430 interposed therebetween is formed at the end of the main shaft 410 to prevent the pivot arm 310 from being displaced in the axial direction of the main shaft 410.

On the other hand, in some cases, the valve member 200 may be formed to rotate at the free end of the pivot arm 310. To this end, the valve member 200 is coupled to the free end of the pivot arm 310 by a hinge pin (not shown) to rotate the valve member 200 at the free end of the pivot arm 310.

When the valve member 200 is provided to rotate at the free end of the pivot arm 310 so that the valve member 200 is in contact with the first output port 120 or the second output port 130 So that the wear of the valve member 200 can be minimized, thereby improving the sealing performance of the three-way valve for cooling water.

The first output port 120 and the second output port 130 are provided with a seat ring 140 so as to maintain a tight contact state when the valve member 200 is in contact with the valve member 200. The seat ring 140 may be made of an elastomer such as EPDM (ethylene propylene) or the like so that the shape thereof can be deformed into a spherical shape of the valve member 200 as the valve member is in close contact with the first output port 120 or the second output port 130. [ diene monomer), and the like.

The operation of the cooling three-way valve of the electrically driven vehicle according to the first embodiment having the above-described configuration will be described with reference to Figs. 3 and 4. Fig.

Figs. 3 and 4 are sectional views showing an operating state of the cooling-accommodating three-way valve of the electrically driven vehicle according to the first embodiment. Referring to the drawings, when cooling water heat-exchanged through a motor via an input port 110 is supplied to the valve body 100, the cooling water can be supplied to a cooling device or a vehicle-mounted charger The power providing unit operates to close the valve member 200 by moving the valve member 200 to the first output port 120 or the second output port 130.

3, the main shaft 410 of the power providing unit rotates toward the second output port 130 to rotate the valve member 200 when the cooling water is to be sent to the cooling device through the first output port 120. [ The main shaft 410 of the power providing part is connected to the first output port 120 when the cooling water is to be sent to the on-board type charger through the second output port 130. On the contrary, So that the valve member 200 closes the first output port 120.

According to the cooling-accommodating three-way valve of the electric drive vehicle according to the first embodiment, the valve member 200 and the power transmission module 300 associated with the valve member 200 are disposed in the inner space of the valve body 100 The amount of the cooling water introduced into the internal space of the valve body 100 can be increased by minimizing the volume occupied by the valve body 100 and the cooling water can be supplied to the first output port 120 or the second output port 130 at a constant pressure therefrom. have.

In addition, since the valve member 200 is closed in line contact with the first output port 120 or the second output port 130, the wear of the valve member 200 is minimized, Or the second output port 130, as shown in FIG.

The valve member 200 closes the first output port 120 or the second output port 130 so that the first output port 120 and the second output port 130 are closed to prevent the cooling water from flowing into the corresponding output port, The seat ring 140 may be provided with a spherical surface 141 as shown in FIG. The spherical surface 141 formed in the seat ring 140 is formed to conform to the curvature of the valve member 200 so that the valve member 200 and the seat ring 140 when the valve member 200 contacts the seat ring 140 ) Is increased to improve the sealing property.

Meanwhile, the cooling three-way valve of the electrically driven vehicle according to the present invention is connected to the first output port (120) by a valve member (200) moving linearly between the first output port (120) and the second output port 120 and the second output port 130 as well as the load of the power providing part for moving the valve member 200 can be reduced to improve the accuracy of the product. The cooling-accommodating three-way valve of the electrically driven vehicle according to the second embodiment will be described with reference to Figs. 6 to 10. Fig.

Second Embodiment

FIG. 6 is an exploded perspective view showing a second embodiment of the cooling-accommodating three-way valve of the electrically driven vehicle according to the present invention, and FIG. 7 is an engagement sectional view to be.

The cooling three-way valve for the electric drive vehicle according to the second embodiment is similar to the structure described in the first embodiment in that the valve body 100, the valve member 200, the power transmission module 300) and a power supply (not shown). The cooling water is installed in an electric drive vehicle that is installed in a cooling water circulation circuit of a vehicle that uses electric power and controls the circulation of cooling water. The cooling water is heat- It is controlled so that it can be sent to an on-board charger.

The valve body 100 according to the second embodiment has an input port 110 in the three directions of the valve body 100 in which the internal space is formed as in the valve body 100 described in the first embodiment, A valve member 200 having a cylindrical shape is provided between the first output port 120 and the second output port 130 so that the first output port 120 and the second output port 130 are formed. The first output port 120 or the second output port 130 is intermittently moved by moving linearly between the port 120 and the second output port 130.

That is, the valve member 200 according to the second embodiment has a cylindrical shape, and one end and the other end of the valve member 200 face the first output port 120 and the second output port 130, respectively, The first output port 120 or the second output port 130 is closed as the first output port 200 moves towards the first output port 120 or moves toward the second output port 130.

At this time, one end and the other end of the valve member 200 have the shape of a circular plate having an outer diameter larger than the inner diameters of the first output port 120 and the second output port 130, respectively, The first output port 120 and the second output port 130 are in surface contact with each other to control the flow of the cooling water.

When the valve member 200 moves linearly between the first output port 120 and the second output port 130 to close the first output port 120 or the second output port 130 as described above, The power transmission module 300 is integrally formed with the rotary member and the valve member 200 that are rotated by the power of the power providing unit and converts the rotary motion of the rotary member into linear motion, ) For linear motion.

At this time, the rotating member includes a pinion 340 connected to the main shaft 410 of the power providing portion and rotating in the forward or reverse direction according to the operation of the power providing portion, and the converting member is engaged with the pinion 340, And the pinion 340 rotates in the forward or reverse direction according to the operation of the power providing unit to connect the valve member 200 to the first output port 120 and the second output port 130, As shown in FIG.

The pinion 340 installed on the main shaft 410 of the power providing portion engages with the rack 230 formed on the valve member 200 so that the pinion 340 is rotated in the forward direction (toward the first output port) or in the reverse direction The valve member 200 moves toward the first output port 120 or the second output port 130 so as to be in surface contact with the corresponding output port so that the input port 110 The cooling water supplied to the inner space of the valve body 100 flows through the open output port.

Meanwhile, when the valve member 200 according to the second embodiment moves between the first output port 120 and the second output port 130 to close each output port, the linear movement of the valve member 200 A guide block 500 having a guide groove 510 is formed in the inner space of the valve body 100 so as to guide the valve body 100. The valve member 200 is formed with guide protrusions 232 corresponding to the guide grooves 510 formed in the guide block 500 so that the valve member 200 is rotated by the rack 230 and the pinion 340, When the valve member 200 is moved toward the port 120 or the second output port 130, the movement of the valve member 200 is guided to be straight.

The power providing unit for providing power for rotating the pinion 340 can be realized by a motor that rotates at a certain angle according to a pulse signal such as a stepping motor as in the case of the power supply of the first embodiment.

The first output port 120 and the second output port 130 are provided with a seat ring 150 so as to maintain a state of being in tight contact when the valve member 200 moves linearly. The valve member 200 may be formed of a material such as EPDM (ethylene) or the like, so that the shape of the valve member 200 can be deformed into a spherical shape of the valve member 200 as the valve member 200 is brought into close contact with the first output port 120 or the second output port 130. [ propylene diene monomer), and the like.

In this case, the valve member 200, which is in surface contact with the seat ring 150, may be implemented in various forms to improve the sealing properties of the first output port 120 and the second output port 130. For example, An insertion portion 151 is formed at both side ends of the valve member 200 to be inserted into the seat ring 150 as shown in Figure 10 and the seat ring 150 is formed around the rear outer diameter of the insertion portion 151. [ The first output port 120 and the second output port 130 are connected to each other by an increased contact area when the valve member 200 closes the first output port 120 or the second output port 130. [ Or the sealing property of the second output port 130 can be improved.

The operation of the cooling three-way valve of the electrically driven vehicle according to the second embodiment having the above-described configuration will be described with reference to Figs. 8 and 9. Fig. Figs. 8 and 9 are cross-sectional views showing an operating state of the cooling-accommodating three-way valve of the electrically driven vehicle according to the second embodiment.

The cooling water supplied to the internal space of the valve body 100 through the input port 110 flows into the cooling device through the first output port 120 or flows into the cooling device through the second output port 120 depending on the state of the vehicle. Through the port 130 to the vehicle-mounted charger.

The valve member 200 according to the second embodiment is configured such that the cooling water can be supplied to the first output port 120 or the second output port 130. The valve member 200 according to the second embodiment includes the first output port 120 and the second output port 130 The pinion 340 and the rack 230 convert linear motion of the main shaft 410 according to the operation of the power providing unit to linear motion of the valve member 200, The port 120 or the second output port 130 is closed.

8, when the cooling water is to be sent to the cooling device through the first output port 120, the main shaft 410 of the power providing part rotates toward the second output port 130 to rotate the valve member 200, The main shaft 410 of the power supply unit is connected to the first output port 120 (the first output port 130), and the second output port 130 is connected to the second output port 130 So that one end of the valve member 200 closes the first output port 120.

According to the third embodiment of the present invention, the valve member 200 moves linearly between the first output port 120 and the second output port 130, The flow rate of the cooling water supplied to the first output port 120 or the second output port 130 can be precisely controlled by reducing the load of the power providing unit even if a large pressure is generated in the internal space of the valve body 100. [ Can be controlled.

The valve member 200 according to the second embodiment linearly moves opposite to the first output port 120 and the second output port 130 so that one end and the other end of the valve member 200 are connected to the first output port 120, The contact area between each output port and the valve member 200 is maximized and the sealing performance between each output port and the valve member 200 is improved. do.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

For example, in the second embodiment, the power transmission module is mounted on the rack 230 and the pinion 340 such that the valve member 200 provided between the first output port 120 and the second output port 130 linearly moves. And the power providing portion for rotating the pinion 340 is described as being realized by the stepping motor, the power providing portion may be implemented by an actuator and the rod drawn out from the actuator may be connected to the valve The valve member 200 may be connected to the member 200 so that the valve member 200 moves linearly between the first output port 120 and the second output port 130.

Further, when the power providing unit is implemented by a motor, a speed reducer may be installed in the power providing unit so that the main shaft 410 rotates at a proper speed when the main shaft 410 rotates according to the operation of the stepping motor.

100: Valve body 110: Input port
120: first output port 130: second output port
140, 150: seat ring 141: spherical surface
151: insertion part 152: extension part
200: valve member 210: engaging groove
220: protrusion 230: rack
232: guide projection 300: power transmission module
310: pivot arm 311:
312: insertion hole 320: fixing pin
330: seat part 340: pinion
410: main shaft 412: key groove
414: snap ring fixing groove 420: key
430: Snap ring 500: Guide block
510: guide groove

Claims (6)

An electrically driven automotive valve device installed in a cooling water circulation circuit of a vehicle powered by electricity to control the circulation of cooling water,
A first output port through which an input port for inputting heat-exchanged cooling water via a motor, a first output port for sending cooling water supplied through the input port to a cooling device, and a cooling water supplied through the input port to an on- On-Board Charger), the valve body having a second output port formed therein;
A valve member located in an inner space of the valve body to open or close the first output port or the second output port;
A power transmission module connected to the valve member to move the valve member to the first output port or the second output port; And
And a power supply for supplying power to the power transmission module for moving the valve member,
Wherein the valve member is in the form of a sphere and is in line contact with the first output port or the second output port,
The power transmission module includes a pivot arm connected to the main shaft of the power providing portion and pivotable according to the operation of the power providing portion, and a free end of the coupling portion, And a fixing pin inserted through the valve member,
Wherein the valve member is formed with protrusions extending toward the pivot arm between the coupling grooves formed at one side and the other side of the valve member, the protrusions being inserted into a seating portion formed between the engaging portions of the pivot arm,
Wherein the first output port and the second output port are provided with a seat ring on a valve seat in line contact with the valve member, wherein the seat ring has a spherical surface formed in a portion contacting the valve member, A three-way valve for cooling the electrically driven vehicle.
delete delete delete delete An electrically driven automotive valve device installed in a cooling water circulation circuit of a vehicle powered by electricity to control the circulation of cooling water,
A first output port through which an input port for inputting heat-exchanged cooling water via a motor, a first output port for sending cooling water supplied through the input port to a cooling device, and a cooling water supplied through the input port to an on- On-Board Charger), the valve body having a second output port formed therein;
A valve member located in an inner space of the valve body to open or close the first output port or the second output port;
A power transmission module connected to the valve member to move the valve member to the first output port or the second output port; And
And a power supply for supplying power to the power transmission module for moving the valve member,
The power transmission module includes:
A rotating member that is rotated by the power of the power providing unit; And
And a conversion member integral with the valve member and converting the rotary motion of the rotary member into linear motion to linearly move the valve member,
Wherein the rotating member includes a pinion connected to a main shaft of the power providing unit and rotating in a forward or reverse direction according to an operation of the power providing unit,
And the converting member includes a rack which is engaged with the pinion and integrally formed with the valve member.

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