KR101310972B1 - Position sensing device and flow control valve having the same - Google Patents

Abstract

The flow control valve of the present invention includes a body having an inner space with open ends, a disk rotatably installed in the inner space to selectively open and close the inner space, and the disk open the inner space. A control device for controlling the rotation of the disk to rotate between the first state and the second state, and generating first and second signals, respectively, when the disk reaches the first and second states, and generating the first and second signals. And a position detecting device for detecting the degree of rotation of the disk using two signals. Through this, the flow control valve can detect the position of the disk with a simple structure.

Description

POSITION SENSING DEVICE AND FLOW CONTROL VALVE HAVING THE SAME}

The present invention relates to a flow control valve that regulates the flow of fluid in accordance with the rotation of the disk disposed inside the valve body.

In general, a valve is installed in a part of a pipe formed by a pipe or the like which forms a passage of a fluid, and is a device that allows the flow to be stopped or the flow of the fluid to be controlled. Such a valve generally opens and closes the flow path according to the rotation of the disk installed inside the valve body, and is configured to rotate the disk using a power source such as a motor.

In air-based vehicles, flow-controlled air is supplied to the equipment in the system to ensure accurate temperature control. In order to control the flow rate of the valve to detect the exact position of the disk, there is a problem that it is difficult to install a position sensor for locating the opening and closing angle of the valve in a narrow space. Accordingly, there is a need for a method that can replace position detection, and a method of more easily configuring an apparatus for detecting a maximum opening angle and a maximum closing angle position may be considered.

The present invention is to solve the above problems, to provide a flow control valve capable of detecting the position of the disk in a form different from the conventional.

In addition, the present invention is to provide a flow control valve for detecting the opening degree of the valve accurately while being easy to manufacture.

According to an aspect of the present invention, a flow control valve includes a body having an internal space having both ends open, a disk rotatably installed in the internal space to selectively open and close the internal space, and the disk is the internal space. A control device for controlling the rotation of the disk to rotate between the first state and the membrane opening the second state, and generating first and second signals, respectively, when the disk reaches the first and second states, and And a position sensing device for detecting a degree of rotation of the disk using first and second signals.

The position sensing device includes a position limiter configured to rotate together with the disk, and a limit switch pressed by the position limiter and switched by the pressing. The control device includes a rotation shaft connected to the disk and a drive motor for driving the rotation shaft, and the position limiter is configured to rotate together with the rotation shaft.

The body of the position limiter is formed in a circular arc shape formed along the outer circumference of the rotating shaft, the limit switch is provided with a plurality so as to be respectively pressed by both ends of the arc. The position limiter may be mounted to a reduction gear disposed between the drive motor and the rotating shaft. The driving motor is controlled by a pulse signal, and the position sensing device calculates the rotation amount per unit pulse of the disk by using the first and second signals, and uses the rotation amount per unit pulse of the disk. The degree of rotation can be detected.

In addition, the present invention is a position detecting device for detecting the degree of rotation of the disk for opening and closing the internal space of the flow control valve, the position limiter made to rotate with the disk, and the first opening the disk is the inner space The state and the membrane include a limit switch pressed by the position limiter and switched by the pressing to generate first and second signals, respectively, when the second state is reached, using the first and second signals to Provided is a position detecting device for detecting a degree of rotation of a disk.

The flow control valve of the present invention can easily sense the maximum opening angle and the maximum closing angle of the disc while limiting the rotation of the disc by using the position limiter and the limit switch.

In addition, in the present invention, since the body of the position limiter has an arc shape, the maximum opening angle and the maximum closing angle can be detected even in a narrower space. Through this, the rotation angle of the disk per unit pulse can be easily calculated, and furthermore, the opening and closing degree of the valve can be detected in real time.

1 is a front view of a flow control valve according to an embodiment of the present invention.
2 is a partial plan view of the flow control valve of FIG.
3 and 4 is an operation of the flow control valve of FIG.

Hereinafter, a flow control valve according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the present specification, the same or similar reference numerals are given to different embodiments in the same or similar configurations. As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

1 is a front view of a flow control valve according to an embodiment of the present invention.

The flow control valve according to the present embodiment may be mounted on a vehicle and may be configured to supply air to various equipment provided in the vehicle.

Referring to the drawings, the flow control valve may be a butterfly valve. Hereinafter, the butterfly valve will be described by way of example, but the present invention is not necessarily limited thereto. For example, the present invention can be applied to a ball valve or the like.

The butterfly valve body 100 is formed in a substantially cylindrical shape. Fluid may flow through the internal space 110 of the cylindrical body 100. More specifically, the internal space 110 forms a flow path through which the fluid can flow, and both ends of the valve body 100 are opened to allow the flow path to extend continuously without interruption.

The inner space 110 is provided with a disk unit (disk unit) for opening and closing the flow path. The disc unit opens and closes the flow path using the disc 120 rotatably mounted to the valve body 100. For example, the disk 120 is connected to the controller 130 and controlled to rotate in the internal space 110 by the controller. The lower portion of the body 100 may be installed to support the body 100 when mounted on the aircraft.

According to the illustration, the control device 130 includes a rotation shaft 131 and a drive motor 132.

The rotating shaft 131 is arranged in a direction crossing the flow path direction of the valve body 110. The disk 120 is rotated by the rotational force of the rotating shaft 131 transmitted to the disk 120.

The drive motor 132 supplies power to the rotating shaft 131 so that the rotating shaft 131 rotates. The disc 120 opens the flow path (first state, the state of FIG. 4), or closes the flow path while rotating about the rotation shaft 131 (second state, the state of FIG. 3). In order to fully open the flow path, the disc 120 should rotate approximately 90 ° in the second state.

More specifically, the reduction gear 133 is mounted to the end of the rotation shaft 131, the rotation of the gear of the drive motor 132 side corresponding to the reduction gear 133 is via the reduction gear 133 through the rotation shaft 131. Is delivered). However, the present invention is not limited thereto, and the rotational motion may be transmitted in other ways. For example, a worm wheel may be mounted at the end of the rotating shaft, and a corresponding worm may be mounted at the driving motor side.

According to the illustration, the flow control valve is provided with a position detecting device 200 for detecting the degree of rotation of the disk 120. The position sensing apparatus 200 generates first and second signals, respectively, when the disk 120 reaches the first and second states, and uses the first and second signals to determine the position of the disk 120. To detect the degree of rotation.

Hereinafter, the position sensing apparatus 200 will be described in more detail with reference to FIGS. 2 to 4. 2 is a partial plan view of the flow control valve of FIG. 1, and FIGS. 3 and 4 are operation diagrams of the flow control valve of FIG. 1.

According to the illustration, the position sensing device 200 includes a position limiter 210 and a limit switch 220.

The position limiter 210 is made to rotate with the disk 120. More specifically, the position limiter 210 is formed to rotate together with the rotation shaft 131, for example, is mounted on the reduction gear 133 disposed between the drive motor 132 and the rotation shaft 131. .

The body of the position limiter 210 is formed in an arc shape formed along the outer circumference of the rotation shaft 131. In this case, the center of the arc shape may be disposed on the rotation shaft 131.

Limit switches 220 are provided in plurality so as to be pressurized by both ends of the arc. According to the drawing, the first and second limit switches 221 and 222 are disposed in parallel in a direction perpendicular to the flow path inside the valve, respectively. The first and second limit switches 221 and 222 are respectively pressed by the position limiter 210 and are switched by the pressing. According to this structure, the first and second limit switches 221 and 222 are respectively opened at the maximum opening (first state, see FIG. 4) and the maximum closing (second state, see FIG. 3) of the disc 120. Will generate a first and a second signal.

As a more specific example, when the disk 120 connected to the rotating shaft 131 is driven in the fully closed state, the position limiter 210 connected thereto operates the first limit switch 221 to transmit the first signal in the fully closed state. do. When the valve is driven in the fully open state, the position limiter 210 connected to the rotary shaft 131 operates the second limit switch 222 to transmit the second signal to the full open state. In order to prevent overload of the rotating shaft, the driving force of the drive motor is removed in the maximum open and maximum closed states.

 The driving motor 132 (refer to FIG. 1) is controlled by a pulse signal, and the position sensing apparatus 200 calculates the rotation amount per unit pulse of the disk 120 by using the first and second signals. The degree of rotation of the disk 120 is detected using the amount of rotation per unit pulse.

As such, when the maximum opening and closing angles are sensed within the operating range of the valve, and the angle at which the disc 120 rotates per unit pulse is calculated from the angle at which the initial rotation is started, the valve state can be determined. do.

Such a flow control valve is not limited to the configuration and manner of operation of the embodiments described above. The embodiments may be configured so that all or some of the embodiments may be selectively combined so that various modifications may be made.

Claims (7)

A body having an inner space having both ends open;
A disk rotatably installed in the inner space to selectively open and close the inner space;
A control device for controlling the rotation of the disk by using a pulse signal so that the disk rotates between a first state in which the disc opens the internal space and a membrane second state; And
When the disk reaches the first and second states, first and second signals are generated, respectively, the amount of rotation of the disk per unit pulse is calculated, the amount of rotation of the disk per unit pulse, and the first and second signals. And a position detecting device for detecting a degree of rotation of the disk using a second signal. The method of claim 1,
The position sensing device,
A position limiter configured to rotate with the disk; And
And a limit switch pressurized by the position limiter and switched by the pressurization. The method of claim 2,
The control device includes a rotating shaft connected to the disk, a drive motor for driving the rotating shaft,
And the position limiter is configured to rotate together with the rotation shaft. The method of claim 3,
The body of the position limiter is made of a circular arc shape formed along the outer periphery of the rotating shaft, the limit switch is provided with a plurality of pressure so as to be respectively pressed by both ends of the arc. The method of claim 3,
The position limiter is a flow control valve, characterized in that mounted on the reduction gear disposed between the drive motor and the rotating shaft. delete In the position sensing device for controlling the rotation of the disk to control the rotation by the pulse signal to open and close the internal space of the flow control valve,
A position limiter configured to rotate with the disk; And
A limit switch pressurized by said position limiter and switched by said pressurizing, so that said first state and said membrane open said internal space and said second state generates a first and a second signal, respectively, upon reaching said second state,
Calculating a rotation amount of the disk per unit pulse, and detecting the rotation degree of the disk by using the rotation amount of the disk per unit pulse and the first and second signals.

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