KR100650187B1 - Apparatus for controlling air dryer and method using the same - Google Patents

Abstract

The present invention automatically repeats the operation of removing the moisture contained in the compressed air discharged by the compressor to produce dry air and drying the dehumidifying agent containing moisture in the process of passing the dry air through the dehumidifying agent. A control method of an air dryer is disclosed. In the control method of the air dryer of this invention, the 1st step which drives a timer, the 1st regeneration air discharge valve which discharge | releases the regeneration air which comes out of a 1st dehumidification tank is controlled to the off state, and it exits from a 2nd dehumidification tank. In a state in which the second regenerative air release valve releasing regenerative air is controlled to be in an on state, when the time of the timer passes the first time by comparing the time transmitted from the timer with the set first time, 2 is a second step of controlling the regeneration air release valve to be turned off, and after a predetermined time after the step is installed in a conduit connecting the first dehumidification tank and the second dehumidification tank to equalize the pressure of the first and second dehumidification tanks. A third step of controlling the dynamic pressure valve to be on; comparing the time transmitted from the timer with a set second time so that the time of the timer becomes the second time A fifth step of controlling the dynamic pressure valve to be turned off, and a fifth time of controlling the first regenerative air release valve to be turned on after a predetermined time has passed after the adding step, and controlling the second regenerative air release valve to be turned off. Step 6, comparing the time transmitted from the timer with the first time to control the first regeneration air discharge valve to turn off when the time of the timer passes the first time time, a fixed time after the step A seventh step of controlling the dynamic pressure valve on afterward, and an eighth step of comparing the time transmitted from the timer with the second time to control the dynamic pressure valve off when the time of the timer passes the second time It includes.

Drying, air, dehumidification, tank, dehumidifier, timer, controller

Description

Control device of air dryer and control method using same {Apparatus for controlling air dryer and method using the same}

1 is a view for explaining the configuration and operation of the embodiment according to the present invention.

2 is a view for explaining the operation of the embodiment according to the present invention.

3 is a block diagram for explaining the main configuration of the control device according to the present invention.

4 and 5 are flowcharts for explaining an embodiment according to the present invention.

The present invention relates to a control device for an air dryer and a control method using the same, and more particularly, to automatically control a process of producing dry air by removing moisture contained in compressed air discharged by a compressor. In addition, the present invention relates to a control device of an air dryer and a control method using the same, which can automatically remove moisture of the dehumidifying agent and improve production efficiency.

In general, the adsorption-type air dryer includes first and second dehumidification tanks in which an adsorbent is stored, and air pipes for supplying or discharging air are disposed at one side of the first and second dehumidification tanks. On the other side of the dehumidification tank are further air lines for supplying or discharging air. In addition, the air ducts are provided with valves for supplying compressed air alternately to the first and second dehumidification tanks. The adsorption-type air dryer alternately supplies compressed air to the first and second dehumidification tanks to remove moisture contained in the compressed air.

The conventional adsorption-type air dryer has a problem in that compressed air is alternately supplied to the first and second dehumidification tanks by using an analog timer, which makes it difficult to precisely control the time and obtains compressed air of low quality.

Therefore, the present invention has been proposed to solve the above problems, and an object of the present invention is to continuously and efficiently perform the operation of dehumidifying and dehumidifying the compressed air for a certain time to obtain a high quality dry air air dryer To provide a control device and a control method using the same.

In order to achieve the above object, the present invention provides a first regeneration air release valve for releasing regeneration air from a first dehumidification tank, and a second regeneration air release valve for releasing regeneration air from a second dehumidification tank. And a dynamic pressure valve installed in a conduit connecting the first dehumidification tank and the second dehumidification tank after a predetermined time to equally control the pressure of the first dehumidification tank and the second dehumidification tank, a timer, and Is electrically connected to the timer and receives the signal, and the dehumidification of the compressed air occurs in the first dehumidification tank and the dehumidification material is regenerated in the second dehumidification tank by comparing the time of the timer with the set time. The dehumidification material is regenerated in the dehumidification tank and the dehumidification material is repeatedly used to dehumidify the compressed air in the second dehumidification tank. Discharge valve, the second reproduction air release valve, and provides an air dryer control jangchieul comprising a controller for controlling the braking pressure valve.

In addition, in the present invention, the first step of driving the timer, the first regeneration air release valve for discharging the regeneration air from the first dehumidification tank is controlled in the off state, and the regeneration air from the second dehumidification tank is controlled. With the second regenerative air release valve releasing controlled in the on state, the second regenerative air is compared when the time of the timer passes the first time by comparing the time transmitted from the timer with the set first time. A second step of controlling the discharge valve to be turned off, and after a certain time after the step is installed in the conduit connecting the first dehumidification tank and the second dehumidification tank to turn on the dynamic pressure valve to equalize the pressure of the first and second dehumidification tanks In the third step of controlling, comparing the time transmitted from the timer and the set second time, if the time of the timer passes the second time, the dynamic pressure A fourth step of controlling the switch to OFF, a fifth step of controlling the first regenerative air release valve to ON after a predetermined time has passed after the adding step, and the timer to control the second regeneration air discharge valve to OFF. A sixth step of controlling the first regenerative air release valve to be turned off when the time of the timer passes the first time by comparing the time transmitted from the first time with the first time; And a seventh step of controlling ON, and an eighth step of comparing the time transmitted from the timer with the second time and controlling the dynamic pressure valve to be OFF when the time of the timer passes the second time. A control method using a control device of a dryer is provided.

In addition, the present invention further includes a ninth step of determining the operation state of the power switch after the eighth step and performing termination if the power switch is in the off state, and repeatedly performing the eighth step in the first step if the power switch is in the on state. .

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

1 and 2 are diagrams for explaining the main configuration and operation process according to the present invention, showing an air dryer and a device for controlling the same. The air dryer includes a first dehumidification tank 1 having a dehumidifying agent contained therein, and a second dehumidification tank 3 having the same shape as the first dehumidification tank 1 and disposed in an adjacent position. The first dehumidification tank 1 includes a compressed air generator and first and second pipes P1 so that air generated in a compressed air generator (not shown) is introduced to dehumidify moisture contained in the air by the dehumidifier. , P2). In addition, the second dehumidification tank 3 includes a compressed air generator, a first pipe line P1, and a third unit so that air generated in the compressed air generator is introduced to dehumidify moisture contained in the compressed air by the dehumidifier. It is connected to the pipeline (P3).

A portion of the first conduit P1 branched into the second and third conduits P2 and P3 may move compressed air passing through the first conduit P1 to one of the second and third conduits P2 and P3. The first valve V1 is provided. The second and third pipe lines P2 and P3 are branched, and the fourth and fifth pipe lines P4 and P5 are installed, and the dehumidification is delivered from the first dehumidification tank 1 or the second dehumidification tank 3. It can exhaust air. The fourth and fifth pipelines P4 and P5 are provided with a first regeneration air discharge valve 5 and a second regeneration air discharge valve 7 controlled by the controller C.

The first regenerative air release valve 5 is controlled to the off state (hereinafter, the same expression is used in a state in which air does not flow) and the second regenerative air release valve 7 is turned on (air flows). In the case where the state is controlled in the following state, the same expression is used), it is possible to discharge the regeneration air (air containing a large amount of moisture by removing moisture of the dehumidifying agent) coming out through the second dehumidification tank 3. have. And when the first regenerative air release valve 5 is controlled to the on state and the second regenerative air release valve 7 is controlled to the off state, the regeneration coming out through the first dehumidification tank 1 is performed. Can release the air.

The first dehumidification tank 1 is connected to a sixth conduit P6 which is a conduit through which moisture contained in the compressed air is removed and discharged. The sixth conduit P6 is connected to a seventh conduit P7 for discharging dried air. In addition, the second dehumidification tank 3 is connected to an eighth conduit P8 which is a conduit through which moisture contained in the compressed air is removed and discharged. The eighth pipe P6 is connected to a seventh pipe P7 through which the dried air is discharged.

On the other hand, the sixth conduit (P6) and the eighth conduit (P8) is provided with a first, second check valve (CV1, CV2) is provided at a predetermined distance to dry air passing through the first dehumidification tank (1) 2 is moved to the dehumidification tank (3) side is discharged to the seventh conduit (P7). In addition, the dry air passing through the second dehumidification tank 3 by the first and second check valves CV1 and CV2 is discharged to the seventh conduit P7 while being blocked from moving to the first dehumidification tank 1 side. Can be.

A portion of the seventh pipeline P6 and the eighth pipeline P8 branches to form a ninth pipeline P9 and a tenth pipeline P10, respectively. The ninth conduit P9 and the tenth conduit P10 are connected to each other, and an eleventh conduit P11 branched from the seventh conduit P7 is connected to the connection point. The ninth conduit P9 and the tenth conduit P10 are opposite to the directions of the first and second check valves CV1 and CV2 installed in the sixth conduit P6 and the seventh conduit P7. The third check valve CV3 and the fourth check valve CV4 are provided. The third check valve CV3 and the fourth check valve CV4 have a part of air dehumidifying agent of the dehumidification tank through the eleventh pipe P11 when the air dried through the seventh pipe P7 is discharged. It is to pass the compressed air so that it can play.

On the other hand, the eleventh conduit P11 is provided with a dynamic pressure valve CV5 controlled by the controller C so as to adjust the pressures of the first and second dehumidification tanks 1 and 3 in the same manner.

This structure is not limited to the examples described in the present invention, the present invention can be applied to the structure described in the Republic of Korea Patent Application Publication No. 2001-0017540 filed by the applicant.

3 is a block diagram illustrating an embodiment of the present invention, and shows a control device of an air dryer. In the control device of the air dryer, a power switch SW and a timer T are electrically connected to the controller C. The controller C is a first regeneration air release valve 5 and a second regeneration device. The air release valve 7 and the dynamic pressure valve CV5 are electrically connected to control the opening and closing degree.

The timer T may be set to a plurality of times, and preferably has a structure for continuously transmitting time data to the controller C.

The control device of the air dryer sequentially and accurately controls the above-described first regeneration air release valve 5, the second regeneration air release valve 7, and the dynamic pressure valve CV5 by the controller C. To improve the quality of the dry air required.

If described in detail with reference to Figures 4 and 5 the operating process of the present invention made as follows.

First, the power switch SW is turned on (ST1). Then, an arbitrary time (for example, 4 minutes) is set as the first time in the timer T (ST3). Then, the timer T sets a second time which is another arbitrary time (for example, 1 minute 5 seconds) (ST5). The first time and the second time may be determined by the degree of dehumidification of the compressed air or the total required amount of the dry air, and the like.

In this state, the controller C controls the first regeneration air discharge valve 5 to the off state, and controls the second regeneration air discharge valve 7 to the on state (ST7, initial state). ). The controller C controls to operate the timer T (ST9) and receives a signal of the timer T. This state is a state where compressed air is supplied to the 1st dehumidification tank 1 side. Then, the compressed air passes through the first dehumidification tank 1 through the first conduit P1 and the second conduit P2. The compressed air passing through the first dehumidification tank 1 removes moisture contained in the air by the dehumidifying agent contained therein. The compressed air from which moisture is removed is discharged through the sixth conduit P6 and the seventh conduit P7 and used where necessary. At this time, the discharged dry air is limited to move to the second dehumidification tank (3) by the second check valve (CV2). The dry air discharged into the seventh conduit P7 is introduced into the second dehumidification tank 3 through the eleventh conduit P11 and the tenth conduit P10. At this time, the dry air flowing into the second dehumidification tank (3) is approximately 15% and blocks the movement to the first dehumidification tank side (1) by the third check valve CV3 and the second dehumidification tank (3). Some dry air flows into the side only. The air introduced into the second dehumidification tank 3 is discharged to the outside through the third conduit P3 and the fifth conduit P5 while drying the dehumidifying agent.

In this state, the controller C compares the time transmitted from the timer T with the set first time (for example, 4 minutes) so that the time of the timer is the first time (for example, 4 minutes). After passing, the second regenerative air release valve 7 is controlled to be OFF (ST13).

And a dynamic pressure valve CV5 installed in an eleventh pipeline P11 connecting the first dehumidification tank 1 and the second dehumidification tank 3 to equalize the pressure of the first and second dehumidification tanks 1 and 3. ) Is controlled to ON (ST15). Then, as dry air flows into the first and second dehumidification tanks 1 and 3, the same pressure is achieved. The controller C compares the time of the timer with the second time (for example, 1 minute 5 seconds) (ST17) to turn off the dynamic pressure valve CV5 when the time of the timer T passes the second time. Control to operate (ST19).

The controller C controls the first regeneration air release valve 5 to be on, and controls the signal of the timer T while the second regeneration air discharge valve 7 is controlled to be OFF (ST21). In response to the input, it is determined whether the time of the timer T is equal to or greater than the first time (for example, 4 minutes) (ST23). At this time, compressed air is supplied to the 2nd dehumidification tank 3 side. Then, the compressed air passes through the second dehumidification tank 3 through the first conduit P1 and the third conduit P3. In the compressed air passing through the second dehumidification tank 3, moisture contained in the compressed air is removed by a dehumidifying agent contained therein. The compressed air from which moisture has been removed is discharged through the eighth conduit P8 and the seventh conduit P7 and used where necessary. At this time, the discharged dry air is limited to move to the first dehumidification tank (1) by the first check valve (CV1). In addition, a part of the dry air discharged into the seventh conduit P7 is introduced into the first dehumidification tank 1 through the eleventh conduit P11 and the ninth conduit P9. At this time, the dry air flowing into the first dehumidification tank 1 is about 15% and the movement to the second dehumidification tank side 2 by the fourth check valve CV4 is blocked and the first dehumidification tank 1 It will only flow into the side. The air introduced into the first dehumidification tank 1 is discharged to the outside through the second conduit P2 and the fourth conduit P4.

In this state, the controller C compares the time transmitted from the timer T with the set first time (for example, 4 minutes), and the time of the timer has passed the first time (4 minutes) ( The first regeneration air release valve 5 is controlled to be OFF (ST25).

And the dynamic pressure valve CV5 installed in the eleventh conduit P11 connecting the first dehumidification tank 1 and the second dehumidification tank 3 to equalize the pressure of the first and second dehumidification tanks 1 and 3. ) To ON (ST27). Then, as dry air flows into the first and second dehumidification tanks 1 and 3, the same pressure is achieved. The controller C compares the time of the timer with the second time (for example, 1 minute 5 seconds) (ST29), and turns off the dynamic pressure valve CV5 when the time of the timer T passes the second time. Control to operate (ST31).

In addition, the controller C determines whether the power switch SW inputs an off signal and terminates when the power switch SW is turned off. If the controller C is turned on, the controller C repeatedly performs the above-described steps from the step before the ST7 (ST33).

Accordingly, the present invention allows the controller C to precisely control the valves at regular time intervals so that dehumidification of the compressed air takes place in the first and second dehumidification tanks 1 and 3 alternately for a predetermined time, and at the same time, 2 The valves can be controlled at regular time intervals so that the moisture contained in the dehumidifier in the dehumidification tanks (1, 3) can be repeatedly removed for a certain period of time to produce high quality dry compressed air. It can be maximized.

In the above description, the valve is in an on state to be controlled to allow air or the like to pass through the conduit, and the valve is to be in an off state to be blocked from passing through the air. In addition, the regeneration air is air that dries the dehumidifier and air that is discharged to the outside after drying the dehumidifier.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the scope of the invention.

As such, the present invention can automatically open and close the operation valves precisely according to the control time so that the dehumidification of the compressed air and the regeneration of the dehumidifying agent can be continuously and efficiently performed for a predetermined time, thereby obtaining high quality dry air. Has the effect of maximizing the performance of the product.

Claims (3)

A first step of driving a timer; The first regenerative air release valve releasing regenerative air from the first dehumidification tank is controlled in an off state, and the second regenerative air release valve releasing regenerative air from the second dehumidification tank is controlled in an on state. In the set state, comparing the time transmitted from the timer with the set first time and controlling the second regeneration air release valve to be off when the time of the timer passes the first time; A third step of controlling a dynamic pressure valve on a pipe connecting the first dehumidification tank and the second dehumidification tank after a predetermined time, thereby controlling the pressure of the first and second dehumidification tanks to be on; A fourth step of comparing the time transmitted from the timer with a set second time and controlling the dynamic pressure valve to be off when the time of the timer passes the second time; A fifth step of controlling the first regenerative air release valve to be turned on after a predetermined time after the adding step and controlling the second regenerative air release valve to be turned off; A sixth step of comparing the time transmitted from the timer with the first time and controlling the first regeneration air release valve to be off when the time of the timer passes the first time time; A seventh step of controlling the dynamic pressure valve on after a predetermined time after the step; An eighth step of comparing the time transmitted from the timer with the second time and controlling the dynamic pressure valve to be off when the time of the timer passes the second time; Control method using the control device of the air dryer comprising a. The method of claim 1, wherein after the eighth step And a ninth step of determining an operation state of the power switch to perform an end if it is in an off state and repeatedly performing the eighth step in the first step if it is in an on state. A first regenerative air release valve for releasing regeneration air from the first dehumidification tank, a second regeneration air release valve for releasing regeneration air from the second dehumidification tank, and the first dehumidification tank and A dynamic pressure valve installed in a conduit connecting the second dehumidification tank to equally control pressure of the first dehumidification tank and the second dehumidification tank; timer; Is electrically connected to the timer and receives the signal, and the dehumidification of the compressed air occurs in the first dehumidification tank and the dehumidification material is regenerated in the second dehumidification tank by comparing the time of the timer with the set time. A controller for repeatedly controlling the first regeneration air release valve, the second regeneration air release valve, and the dynamic pressure valve to regenerate the dehumidifying material in the dehumidification tank and dehumidify the compressed air in the second dehumidification tank; Air dryer control device comprising a.

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