KR101738587B1 - Door operator - Google Patents

Abstract

The door opening and closing device of the present invention is characterized in that it comprises an opening and closing door which is openably and closably provided at an outlet of a duct and one end of a rod which can be retracted forward and backward is coupled to the opening and closing door, A valve positioner connected to the inside of the cylinder to sense the protruding / retracting length of the rod and to transmit air pressure to the inside of the cylinder according to an open / close signal transmitted from outside, and a valve positioner electrically connected to the valve positioner And a controller for transmitting the selected opening / closing signal to the valve positioner to vary the opening / closing degree of the opening / closing door.

Description

{DOOR OPERATOR}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a door opening / closing apparatus, and more particularly, to a door opening / closing apparatus capable of changing a position of an opening / closing door in accordance with selected opening /

2. Description of the Related Art Generally, a pneumatic cylinder used in an opening / closing apparatus has a form in which a piston reciprocates linearly by the pressure of a fluid and moves the opening / closing door.

The pneumatic cylinder for this purpose is composed of a body and a rod for reciprocating the opening and closing door while moving forward and backward by a predetermined stroke distance from the front end of the body.

For example, the pneumatic cylinder may be connected to a door of a front end such as a duct. In this case, the pneumatic cylinder may vary the open / close state of the door depending on the protruding / retracting length of the rod.

Such a conventional pneumatic cylinder can switch the opening / closing door to the closed or open state by advancing the rod to the maximum length or by retracting the rod to the minimum length.

However, when the conventional pneumatic cylinder is switched to the open state, there is a difficulty in variably controlling the opening degree of the opening and closing door or accurately positioning the rod of the cylinder by a desired length.

Prior art relating to the present invention is Korean Registration Practice No. 20-0223448 (Feb. 28, 2001), which discloses an automatic closing device using a pneumatic cylinder.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a door opening / closing apparatus and a door opening / closing apparatus which can detect the position of a cylinder rod in real time and then adjust the position of the opening / closing door in accordance with the selected opening / closing information, And it is an object of the present invention to provide a door opening / closing apparatus that can be operated at a long distance and thus can ensure ease of use.

The door opening / closing device according to the present invention is characterized in that the door opening / closing device is provided with an opening / closing door which is openably and closably provided at an outlet of a duct, one end of a rod capable of projecting back and forth is coupled to the opening / closing door, A valve positioner connected to the inside of the cylinder to sense the protruding / retracting length of the rod and to transmit air pressure to the inside of the cylinder according to an open / close signal transmitted from the outside, and a valve positioner electrically connected to the valve positioner And a controller for transferring the selected opening / closing signal to the valve positioner to change the opening / closing degree of the opening / closing door.

In this case, the controller is provided with opening / closing information that is divided into a closed state and a plurality of open states, and the valve positioner varies the protruding / retracting length of the rod according to the opening / closing information transmitted from the controller.

It is preferable that the opening / closing information is previously set by dividing the position of the opening / closing door into 0% (closed) to 100% (opened).

The valve positioner may include a housing coupled to an outer periphery of the cylinder, an air pump installed inside the housing, and a valve for adjusting the pumping direction of the air pump.

The air pump may be connected to the cylinder by a connecting line, and a pressure gauge may be further provided on the connecting line for displaying the air pressure externally.

The connection line connects the air pump and the rear end of the cylinder, and connects the front end of the cylinder and the air pump to the front end of the cylinder so that the rod retracts. And a second connection pipe for supplying the air pressure to the rear end of the cylinder to advance the rod.

Preferably, the valve positioner further includes a position sensing unit for sensing the protrusion length of the rod.

In addition, the position sensing unit may convert the linear motion of the rod into rotational motion, and then obtain the protruding length of the rod through the rotated angle sensing.

The position sensing unit may include a connection member installed to be able to protrude and retract from the front and rear of the valve positioner with a front end coupled to the rod and having an inclined surface formed at an upper end thereof along the forward and backward directions, A rotary member rotatably installed inside the valve positioner and having a different angle of rotation according to a height of the elevation member, And a sensor for transmitting the rotation angle sensing signal to the controller may be provided.

Further, a bracket is further coupled to the outside of the duct, a front end of the cylinder is coupled to the bracket, and the rod penetrates the bracket and is coupled to one end of the opening / closing door.

The present invention detects the position of the cylinder rod in real time and then adjusts the position of the opening and closing door according to the selected opening and closing information to variously select and adjust the opening cross sectional area of the outlet and accurately position the opening and closing door at a desired position And it is possible to operate at a long distance, so that the convenience of use can be secured.

1 is a front view showing a door opening and closing apparatus according to the present invention.
2 is a plan view showing a door opening / closing apparatus according to the present invention.
3 is a side view showing a door opening / closing apparatus according to the present invention.
4 is a block diagram illustrating a method of operating the door opening and closing apparatus according to the present invention.
5 is a table for showing opening / closing information of the door opening / closing apparatus according to the present invention.

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

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving it will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings.

The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

In the following description, well-known functions or constructions are not described in detail to avoid obscuring the subject matter of the present invention.

FIG. 1 is a front view showing a door opening / closing apparatus according to the present invention, and FIG. 2 is a plan view showing a door opening and closing apparatus according to the present invention.

4 is a block diagram illustrating a method of operating the door opening / closing apparatus according to the present invention. FIG. 5 is a block diagram of a door according to an embodiment of the present invention. It is a table for showing the opening and closing information of the opening and closing apparatus.

1 to 5, a door opening and closing apparatus according to the present invention includes an opening / closing door 100, a cylinder 200, a valve positioner 300, and a controller 400.

First, the opening and closing door 100 is installed in the outlet 11 of the duct 10 so that the outlet 11 of the duct 10 is opened and closed by the opening and closing operation of the opening and closing door 100.

In this case, the duct 10 may extend in a predetermined length from the incinerator or the like. At this time, the opening and closing door 100 may be installed so as to pass through the end or a part of the outlet 11.

In this state, the opening and closing door 100 can be moved to the inner closed position of the duct 10 or the outer open position of the duct 10 in cooperation with the rod 210 of the cylinder 200, which will be described later.

The cylinder 200 is provided to move the opening and closing door 100 to a closed or open position. The cylinder 200 may be installed in parallel to the moving direction of the opening and closing door 100.

One end of the rod 210 is reciprocally coupled to the inside of the cylinder 200, and the opposite end of the rod 210 is coupled to one side of the opening / closing door 100.

That is, the cylinder 200 can vary the position (closed / open) of the opening / closing door 100 by adjusting the protruding / retracting length of the rod 210.

For example, as shown in FIGS. 1 and 2, when the rod 210 of the cylinder 200 advances to its maximum length, the opening and closing door 100 is moved to the inner closed position of the duct 10, (11) is closed.

When the rod 210 of the cylinder 200 is retracted to the maximum length, the opening and closing door 100 is moved to the external opening position of the duct 10 to open the outlet 11 of the duct 10 .

A bracket 20 for coupling the cylinder 200 to the set position may be further provided on the outside of the duct 10. The front end of the cylinder 200 may be coupled to one side of the bracket 20. [

At this time, the front end of the cylinder 200 and one side of the bracket 20 can be fixedly coupled by separate fastening members, and the rod 210 of the cylinder 200 penetrates the bracket 20, 100, respectively.

The valve positioner 300 is connected to the inside of the cylinder 200 to sense the protrusion length of the rod 210 and to transmit the air pressure to the inside of the cylinder 200 according to an open / close signal transmitted from the outside.

Here, the valve positioner 300 may include a housing 310, an air pump 320, and a valve 330 as shown in FIG.

The housing 310 may be coupled to the outside of the cylinder 200 and a separate information display window may be formed outside the housing 310.

The air pump 320 is installed inside or outside the housing 310 to generate air pressure and the air pump 320 may be provided with a discharge port to which connection lines L1 and L2 to be described later are connected.

The connection lines L1 and L2 may be provided as a first connection pipe L1 and a second connection pipe L2 as shown in FIGS.

The first connection pipe L1 connects the air pump 320 to the front end of the cylinder 200 and supplies the air pressure from the air pump 320 through the front end of the cylinder 200, To be retracted.

The second connection pipe L2 connects the air pump 320 and the rear end of the cylinder 200 and supplies the air pressure from the air pump 320 through the rear end of the cylinder 200, .

The first connection pipe L1 and the second connection pipe L2 may be applied as metal piping so as to withstand the air pressure to be moved along the inside of the first connection pipe L1 and the second connection pipe L2.

The first connection pipe L1 and the second connection pipe L2 may be respectively provided with pressure gauges 600 for indicating the internal pressure.

The pressure gauge 600 may use a digital display mode in which a separate scale, a needle or a numeral is displayed so that the user can visually confirm it.

The pressure gauge 600 is installed in the first connection pipe L1 and the second connection pipe L2, respectively, so that the pressure can be individually displayed.

The valve 330 is for regulating or opening the air discharge direction of the air pump 320 and can selectively control the opening and closing states of the first connection pipe L1 and the second connection pipe L2.

The valve positioner 300 may further include a position sensing unit 500 for sensing the protrusion length of the rod 200 of the cylinder 200.

The position sensing unit 500 switches the linear motion of the rod 210 to a rotational motion, and then detects the rotated angle and transmits a sensing signal to a controller 400 to be described later.

The position sensing unit 500 is installed so that the front end of the position sensing unit 500 is coupled to the rod 210 and is capable of protruding forward and backward from the valve positioner 300.

More specifically, the position sensing unit 500 may include a connecting member 510, an elevating member 520, a rotating member 530, and a sensing sensor 540.

First, the connecting member 520 is installed to be slidable forward and backward of the cylinder 200, and the front end of the connecting member 520 is coupled to the outer periphery of the rod 210.

Here, the connecting member 520 may be installed to be slidable in the front-rear direction at the upper end of the cylinder 200.

At an upper end of the connecting member 520, an inclined surface 511 having a predetermined angle along the forward and backward directions is formed.

The inclined surface 511 may be formed to adjust the height of the elevating member 520 to be described later according to the protruding and retreating position of the connecting member 520 and gradually increase in height toward the rear.

However, the inclined surface 511 may have a shape in which the height gradually decreases toward the rear side.

The elevating member 520 converts the linear motion of the cylinder 200 rod 210 into the rotational motion of the rotating member 530 to be described later.

To this end, the elevating member 520 is seated on the upper end of the inclined surface 511 and varies in height according to the position of the inclined surface 511.

For example, when the connecting member 520 advances, the elevating member 520 ascends to a predetermined height, and when the connecting member 520 retreats, the elevating member 520 descends to a predetermined height.

That is, the elevation member 520 can vary the rotation angle of the rotation member 530, which will be described later, through the height variation, and the detection sensor 540, which will be described later, can detect the rotation angle of the rotation member 530 have.

The rotary member 530 is rotatably installed inside the valve positioner 530 and changes the angle of rotation according to the height of the elevation member 520.

One end of the elevating member 520 may be coupled to one side of the rotating member 530 and the rotating member 530 may be rotated at a predetermined angle as the height of the elevating member 520 varies.

For example, on the outer surface of the rotary member 530, a separate mark may be formed to detect the angle of rotation of the detection sensor 540, which will be described later.

The sensing sensor 540 senses the rotation angle of the rotating member 530 and the sensing sensor 540 may be electrically connected to the controller 400 to be described later.

Here, the sensing sensor 540 may be installed inside the housing 310 and may transmit a rotation angle sensing signal to a controller 400 to be described later.

The sensing sensor 540 may selectively use various types of sensors (position sensors, photo sensors, etc.) that can sense the reference angle and the changing angle of the rotary member 530.

For example, the sensing sensor 540 can sense the rotating member 530 at an angle of 0 to 90 degrees. When the rod 210 is moved to the closed position, the sensing sensor 540 is closed at a zero degree And transmit the status detection signal to the controller 400. [

In contrast, when the rod 210 is moved to the open position, the sensing sensor 540 may transmit a 1 to 90 degree opening state sensing signal to the controller 400.

Of course, the sensing angle of the sensing sensor 540 can be arbitrarily set as needed, and the rotation angle of the rotation member 530 can be arbitrarily set.

The controller 400 is electrically connected to the valve positioner 300 and transmits an opening / closing signal selected by the user to the valve positioner 300 to control the operation of the cylinder 200.

The valve positioner 300 sets the protruding / retracting length of the rod 210 by the air pressure according to the opening / closing information D, .

The opening / closing information D is preferably divided into the opening / closing degree of 0% (closed) to 100% (opened) as shown in FIG.

The opening / closing information D can be set by specifying a distance (mm) such that the current signal in units of (mA) is converted into a voltage signal in units of (V) and then proportional to the converted voltage signal.

For example, as shown in FIG. 5, the current range is set to 4 mA to 23 mA, the voltage range is set to 1 to 10 V to follow the current range, and the distance range of the rod 210 is set to 100 to 100 V, 1000 mm.

At this time, the opening / closing door 100 is partially opened from the voltage of 1V to the voltage of 9V, and the opening / closing door 100 is fully opened at the voltage of 10V.

The opening / closing information D shown in Fig. 5 is for showing an example, and the opening / closing information D can be arbitrarily set as necessary.

An operation switch (not shown) and an information display window (not shown) for selecting the closed state and the open degree of the opening / closing door 100 may be formed outside the controller 400.

For example, when the opening / closing door 100 is to be moved to the open state, the degree of opening is selected by using the operation switch of the controller 400.

In this case, the controller 400 drives the valve positioner 300 to cause the rod 210 of the cylinder 200 to retreat at a distance of 1 to 100%, and the opening / closing door 100 coupled to the rod 210 And moves to the position where the outlet 11 is opened.

On the other hand, when the opening / closing door 100 is to be moved to the closed state, the closed state is selected using the operation switch of the controller 400. [

In this case, the controller 400 drives the valve positioner 300 to move the rod 210 of the cylinder 200 to a distance of 0%, and the opening / closing door 100 coupled to the rod 210 is moved (11).

The controller 400 may be disposed at a remote location spaced apart from the valve positioner 300 and the cylinder 200. In this case, the operator may move the outlet door 11 of the duct 2, The opening and closing state can be varied.

As a result, the present invention can monitor the position of the cylinder 200 rod 210 in real time and then move the opening / closing door 100 to the closed or multi-step opening position in accordance with the selected opening / closing information D .

Accordingly, the present invention can variously select and adjust the open cross-sectional area of the outlet 11 of the duct 10, accurately position the opening / closing door 100 at a desired position, and can operate at a long distance, .

Although a specific embodiment of the door opening / closing apparatus of the present invention has been described so far, it is apparent that various modifications can be made without departing from the scope of the present invention.

Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

It is to be understood that the foregoing embodiments are illustrative and not restrictive in all respects and that the scope of the present invention is indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

10: duct 11: outlet
100: opening / closing door 200: cylinder
210: load 300: valve positioner
310: housing 320: air pump
400: controller 500: position sensing unit
510: connecting member 511: inclined surface
520: lifting member 530: rotating member
540: Detection sensor 600: Pressure gauge
D: opening / closing information L1: first connecting pipe
L2: second connector

Claims (10)

An opening / closing door that is openably and closably installed at an outlet of the duct;
A rod coupled to the opening and closing door to adjust the opening and closing state of the opening and closing door;
A valve positioner connected to the inside of the cylinder to sense the protruding / retracting length of the rod and to transmit air pressure to the inside of the cylinder according to an open / close signal transmitted from outside; And
And a controller electrically connected to the valve positioner and transmitting the selected opening / closing signal to the valve positioner to vary the opening / closing degree of the opening / closing door. The method according to claim 1,
In the controller,
Closing and opening / closing information in which a plurality of opened states are divided is preset,
The valve positioner includes:
Wherein the controller changes the protruding / retracting length of the rod according to the opening / closing information transmitted from the controller. The method of claim 2,
The open /
Wherein the door opening / closing device is previously set by dividing the position of the opening / closing door from 0% (closed) to 100% (opened). The method according to claim 1,
The valve positioner includes:
A housing coupled to an outer periphery of the cylinder,
An air pump installed inside the housing,
And a valve for adjusting a pumping direction of the air pump. The method of claim 4,
In the air pump,
Connected to the cylinder by a connecting line,
On the connection line,
Further comprising a pressure gauge for externally displaying the air pressure. The method of claim 5,
The connection line includes:
A first connection pipe connecting the air pump and the front end of the cylinder and supplying air pressure to the front end of the cylinder to retract the rod;
And a second connection pipe connecting the air pump and a rear end of the cylinder and supplying air pressure to a rear end of the cylinder to advance the rod. The method according to claim 1,
In the valve positioner,
Further comprising a position sensing unit for sensing the length of the rod. The method of claim 7,
The position sensing unit includes:
Wherein the control unit converts the linear motion of the rod into the rotary motion, and then obtains the protruding / retracting length of the rod through the rotated angle sensing. The method of claim 7,
The position sensing unit includes:
A connecting member installed so as to protrude forward and rearward of the valve positioner with a front end coupled to the rod and having an inclined surface formed at an upper end thereof along the front-
An elevating member mounted on an upper end of the inclined surface and installed to be movable up and down according to a height of the inclined surface,
A rotating member rotatably installed inside the valve positioner, the rotating member rotating at different angles with the height of the elevating member,
And a sensor for sensing a rotation angle of the rotary member and transmitting a rotation angle sensing signal to the controller. The method according to claim 1,
On the outside of the duct,
The brackets are further coupled,
The cylinder
Wherein a front end is coupled to the bracket and the rod passes through the bracket and is coupled to one end of the opening and closing door.

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