KR101817154B1 - Control method of adsorption type air dryer apparatus - Google Patents

Abstract

The present invention relates to a method for controlling an adsorption type air dryer. According to the present invention, the adsorption type air dryer includes: a first tank and a second tank which include absorbents; a first pipeline which is connected to a compressed air generator; a second pipeline which is connected to one end of the first tank through the first pipeline and a shuttle valve; a fifth pipeline which is connected to one end of the second tank through the first pipeline and the shuttle valve; a third pipeline which is connected to the other end of the first tank and includes a first main check valve on the pipeline; a fourth pipeline which is connected to the third pipeline through one side thereof and connected to a system requiring the dehumidified compressed air through the other side thereof; a sixth pipeline which is connected to the other end of the second tank through one side thereof, includes a second main check valve on the pipeline, and is connected to the fourth pipeline through the other side thereof; a seventh pipeline which ramifies and meets at the third pipeline and the sixth pipeline and includes a flow control means on the pipeline; an eighth pipeline which ramifies at the second pipeline and is connected to a first muffler and includes a first purge valve on the pipeline; a ninth pipeline which ramifies at the fifth pipeline and is connected to a second muffler and includes a second purge valve on the pipeline; and a controller which opens or closes the first purge valve and the second purge valve.

Description

[0001] The present invention relates to a control method of an adsorption type air dryer apparatus,

The present invention relates to a control method of an adsorption type air dryer apparatus for removing moisture of compressed air by using an adsorbent while alternately repeating adsorption and regeneration, and then supplying air to the system in which moisture is removed.

First, the following background art is intended to help understand the contents of the adsorption type air dryer apparatus and its control method which will be described later, and the contents mentioned in the background of the present invention do not need to be construed as prior art.

The air dryer apparatus is an apparatus for supplying dehumidified compressed air generated from a compressed air generating apparatus to a system requiring dehumidified compressed air such as electric, electronic, medical, pharmaceutical, food, chemical, and semiconductor processing.

The compressed air generator sucks air from the atmosphere, compresses it to a high pressure, and then discharges the compressed air to an industrial site. When the air is compressed to a high pressure, the temperature rises to a high temperature. The oil and moisture contained in the product may cause the life and function of the production line and various pneumatic machines to deteriorate, resulting in a fatal result that the productivity and quality are deteriorated.

Accordingly, the apparatus for drying the air discharged from the compressed air generating device is an air dryer. Such an air dryer can be divided into a suction type air dryer and a freezing air dryer. In the case of a refrigerated air dryer, After cooling through the aftercooler, the dust and the like are removed through the main filter, the moisture is removed through the heat exchanger, and then the foreign matter and moisture are removed through the line filter and the air filter, and then supplied to the necessary system.

In the case of the adsorption type air dryer, two tanks in which an adsorbent (alumina gel, zeolite, silica gel, morecular sieve, etc.) are accommodated are alternately repeated in dehumidification of the compressed air and regeneration of the adsorbent, System.

This type of adsorption type air drier is divided into several types according to the desorption method. The adsorption type air drier is divided into several types such as PSA (Pressure Swing Adsorption) Type Heatless Type and TSA (Thermal Swing Adsorption) Typical Heater Type (heater, Purge, etc.), and VSA (Vacuum Swing Adsorption) type.

Here, in the construction of the heatless type adsorption type air dryer apparatus, the adsorbent is contained in each of the first tank and the second tank, the compressed air discharged from the compressed air generating device is dehumidified through the first tank, In this process, some of the compressed air is moved to the second tank due to the pressure difference to remove the moisture of the adsorbent contained in the second tank, thereby regenerating the adsorbent of the second tank, And is discharged to the outside through the opening of the purge valve.

Thereafter, when the purge valve of the first tank side is opened while the first tank and the second tank are at the same pressure while the second tank side purge valve is closed, the compressed air discharged from the compressed air generating device is moved to the second tank, And the dehumidified compressed air is supplied to the system. In this process, some of the compressed air is moved to the first tank due to the pressure difference to remove the moisture of the adsorbent contained in the first tank, And then discharged to the outside through the opening of the first tank side purge valve,

Then, when the purge valve of the first tank side is closed and the purge valve of the second tank side is opened after the first tank and the second tank are at the same pressure, the first tank is dehumidified again, A series of processes to be performed is repeated.

However, the conventional heatless type adsorption type air dryer apparatus has the following problems.

That is, a part of the compressed air dehumidified in the process of supplying the compressed air dehumidified through the first tank to the system through the supply pipe is branched from the supply pipe in a depressurized state so that the first tank and the second tank are connected to each other At this time, a check valve is provided on the side of the regeneration pipe facing the first tank and the side facing the second tank so that the compressed air can be moved only to either the first tank or the second tank .

However, such a check valve can easily cause a problem in the intermittence of the compressed air flow due to deformation of the internal component due to long use and foreign substances accumulated in the inside, and the check valve is expensive There is a problem.

Korean Utility Model Publication No. 1993-0006482 (1993.089.24. Announcement)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is therefore an object of the present invention to provide a dehumidifying apparatus for dehumidifying compressed air and regenerating an adsorbent through an adsorbent contained in a pair of tanks, In the adsorption type air dryer apparatus, by improving the flow rate control means for preventing the compressed air discharged from the tank for dehumidifying action from moving toward the dehumidifying tank in the process of decompression and moving to the regeneration tank, The object of the present invention is to provide a control method of a suction type air dryer apparatus that can reduce the cost of manufacturing and installing the control means and further improve the efficiency of maintenance and management of the flow rate control means.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are not intended to limit the invention to the precise form disclosed. It will be understood clearly.

According to a preferred embodiment of the present invention, there is provided an adsorber comprising a first tank and a second tank in which an adsorbent is accommodated, a first conduit connected to the compressed air generating device, and a second conduit through a first conduit and a shuttle valve, A fifth conduit connected to one end of the second tank through the first conduit and the shuttle valve and a second conduit connected to the other end of the first tank, A fourth conduit connected to the third conduit on one side and to a system requiring dehumidified compressed air and a fourth conduit on the other side connected to the other end of the second tank, A second main check valve on the other side, a sixth conduit connected to the fourth conduit on the other side, and a third conduit connected to the third conduit and the sixth conduit, respectively, and flow control means is provided on the conduit A seventh conduit branched from the second conduit, A ninth conduit connected to the second muffler and having a first purge valve on the conduit, a ninth conduit branched from the fifth conduit and connected to the second muffler, and having a second purge valve on the conduit, And a control unit for controlling opening and closing of the first purge valve and the second purge valve.

More preferably, the first orifice and the second orifice may be respectively provided on opposite sides of the seventh conduit with the center needle valve interposed therebetween by the flow control means.

More preferably, the first solenoid valve and the second solenoid valve may be provided on opposite sides of the seventh conduit with the center needle valve therebetween, as the flow control means.

More preferably, a first pressure gauge and a second pressure gauge may be provided on the seventh conduit so as to individually determine whether the first orifice and the second orifice are abnormal.

More preferably, a first differential pressure gauge and a second differential pressure gauge may be provided on the seventh pipe so as to compare and determine the pressures at the forward and backward points of the first orifice and the forward or backward point of the orifice, respectively.

According to a preferred embodiment of the present invention, there is provided a control method of an adsorption type air dryer apparatus,

The second purge valve is opened and the compressed air in the second tank is discharged to the second muffler through the second purge valve and the ninth pipe to control the second tank to be in a low pressure state, The compressed air which is required to be dehumidified is introduced into the first tank through the first conduit, the shuttle valve and the second conduit, dehumidified by the adsorbent in the first tank, and then passed through the third conduit and the fourth conduit To a system that requires dehumidified compressed air through a first stage,

A portion of the compressed air passing through the third conduit passes through the second orifice while being depressurized while passing through the first orifice and the needle valve installed in the seventh conduit and then flows into the second tank through the sixth conduit A second step of regenerating the adsorbent in the second tank,

A third step in which the compressed air used for regenerating the adsorbent in the second tank is discharged to the second muffler through the second purge valve and the ninth pipe opened through the fifth pipe;

A fourth step in which the second purge valve is closed after a predetermined time by the control unit;

Wherein the first purge valve and the second purge valve are disposed in the first tank and the second tank so that the pressure of the first tank and the second tank becomes equal to each other within a predetermined time, 5,

After the fifth step, the first purge valve is opened by the control unit, and the compressed air in the first tank is discharged to the first muffler through the first purge valve and the eighth duct, so that the first tank becomes low pressure , The second tank is at a high pressure and the compressed air requiring dehumidification is introduced into the second tank through the first conduit, the shuttle valve and the fifth conduit, and then dehumidified by the adsorbent in the second tank. And then supplied to the system requiring compressed air dehumidified through the sixth conduit and the fourth conduit;

A portion of the compressed air passing through the sixth conduit passes through the first orifice while being depressurized while passing through the second orifice provided in the seventh conduit and the needle valve, 1) regenerating the adsorbent in the first tank while being introduced into the first tank,

The compressed air used for regenerating the adsorbent in the first tank is discharged to the first muffler through the first purge valve and the eighth conduit opened through the second conduit;

The first purge valve is closed and the pressure of the first tank and the second tank is made equal to each other within a predetermined time, and then the same pressure of the first tank and the second tank is maintained for a predetermined waiting time 10,

And the eleventh step wherein the first step to the tenth step are repeated while the first step is performed again after the tenth step and the cycle is repeated several times.

More preferably, in the fourth step, the opening time of the second purge valve is maintained at 3 minutes and 50 seconds, and in the fifth step, the first tank and the second tank are maintained at the same pressure within 60 seconds Wherein the first purge valve maintains the open time of 3 minutes and 50 seconds in the ninth step and the first tank and the second tank in 60 seconds It can be configured to have a waiting time of 10 seconds while maintaining the same pressure.

More preferably, the first pressure gauge and the second pressure gauge may be provided on the seventh conduit so as to individually determine whether the first orifice and the second orifice are abnormal.

More preferably, a first differential pressure gauge and a second differential pressure gauge may be provided on the seventh conduit so as to compare and determine the pressures at the forward and backward points of the first orifice and the forward or backward point of the orifice, respectively.

The control method of the adsorption type air dryer apparatus according to the described contents has the following effects.

In other words, when moving a part of the dehumidified compressed air discharged from the dehumidification side tank to the regeneration side tank, the orifice instead of the check valve is applied to prevent the compressed air from moving to the dehumidifying side tank other than the regeneration side tank It is possible to manufacture and install the flow control means at a low cost and to solve the problem that the maintenance is difficult due to the deformation of parts and the clogging of the pipeline according to the use period, So that the apparatus can be simplified and the flow of compressed air can be effectively controlled.

Here, since the effect of the contents described above is expected to be exercised by the constitution of the contents described irrespective of whether or not the inventor perceives it, the above-mentioned effects are only some effects according to the contents described, It should not be recognized that it is described.

It should also be understood that the effect of the described disclosure should be further understood by reference to the overall description of the specification and that, although not explicitly described, a person having ordinary skill in the art will appreciate It should be seen as an effect described in this specification.

1 is a front view illustrating an adsorption type air dryer apparatus according to an embodiment of the present invention.
FIG. 2 is a front view of a principal portion illustrating an important configuration of a suction type air dryer apparatus according to an embodiment of the present invention.
FIG. 3 is a view illustrating the operation of the adsorption type air dryer according to an embodiment of the present invention.
FIG. 4 is a configuration diagram illustrating another operation of the adsorption type air dryer according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims.

In addition, the sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation, and the terms defined specifically in consideration of the structure and operation of the contents described may vary depending on the intention or custom of the user or the operator And the definitions of these terms should be based on the contents throughout this specification.

1, the adsorption type air dryer apparatus includes a first tank 100 in which an adsorbent is contained therein, a second tank 100 disposed adjacent to the first tank 100 in the same shape as the first tank 100, And a second tank 200 accommodated therein.

3 or 4, the compressed air generated by the compressed air generator 500 is introduced into the first tank 100, and then the compressed air generated by the compressed air generator 500 The second tank 200 is connected to the first channel 310 and the second channel 320. After the compressed air generated from the compressed air generating apparatus 500 is introduced into the second tank 200, Is connected to the compressed air generating apparatus 500 through the first conduit 310 and the fifth conduit 350 so that the second conduit 310 can be removed.

The inner core is moved in accordance with the pressure change at the connection point between the first conduit 310 to which the compressed air generating apparatus 500 is connected and the second conduit 320 and the fifth conduit 350, And a shuttle valve 311 that communicates the first conduit 310 with the fifth conduit 350 is provided.

The third pipe (330) is installed in the first tank (100) so that the compressed air introduced into the first tank (100) through the second pipe (320) can be discharged and moved in a dehumidified state by absorbing moisture by the adsorbent. The third conduit 330 is connected to the fourth conduit 340 connected to the system 600 to which the dehumidified compressed air is supplied.

The sixth channel 360 is installed so that the compressed air introduced into the second tank 200 through the fifth channel 350 can be discharged and moved in a dehumidified state by absorbing moisture by the adsorbent, The sixth conduit 360 is connected to the fourth conduit 340 described above.

The third and fourth conduits 330 and 360 are connected to the fourth conduit 340 at a certain point so that the compressed air moving through the third conduit 330 to the fourth conduit 340 flows through the sixth conduit 340, The third channel 330 and the third channel 330 may be provided so as to prevent the compressed air moving to the pipeline 360 or moving to the fourth pipeline 340 through the sixth pipeline 360 from moving to the third pipeline 330. [ A first main check valve 331 and a second main check valve 361 are installed on the line of the six pipe line 360, respectively.

On the other hand, one side and the other side of the seventh conduit 370 are branched from each other in the third conduit 330 and the sixth conduit 360, and the seventh conduit 370 is provided with a flow control means using differential pressure The other side of the seventh conduit 370 is in a low pressure state when one side of the seventh conduit 370 is under high pressure and the flow control means is operated.

The flow control means provided on the seventh conduit 370 is not illustrated in the figure but is provided with a needle valve for controlling the pressure in the center on the seventh conduit 370, A solenoid valve can be installed, respectively.

Here, in the case of the solenoid valve, deformation and foreign matter contamination and malfunction may occur depending on the use period, and it is not inexpensive in manufacturing and installation and maintenance costs.

Accordingly, in the preferred embodiment, a needle valve 372 for pressure control is provided at the center on the seventh line 370 as shown in Figs. 2 and 3 and 4, and the needle valve 372 is provided on both sides A first orifice 371 and a second orifice 373 may be provided.

1, a first orifice 371 and a second orifice 373 are provided on the seventh conduit 370 so as to determine whether the first orifice 371 and the second orifice 373 are abnormal, A pressure gauge 710 may be provided and a second pressure gauge 720 may be provided at a point adjacent to the second orifice 373. [

In order to more accurately determine whether the first orifice 371 and the second orifice 373 are abnormal or not, the pressure difference between the front and rear points of the first orifice 371 is checked on the seventh conduit 370 A second differential pressure gauge 820 can be installed so that the pressure difference between both front and rear points can be confirmed with respect to the second orifice 373 as a first differential pressure gauge 810, 1 pressure gauge 710, a second pressure gauge 720, a first differential pressure gauge 810 and a second differential pressure gauge 820 may be provided together.

The second conduit 320 is connected to the first muffler 382 and the eighth conduit 380 is connected to the first muffler 382. The first conduit 380 is connected to the first conduit 380 through the first conduit 380, The ninth conduit 390 is branched and connected to the second muffler 392 and the ninth conduit 390 is opened or closed on the ninth conduit 390. In this case, A second purge valve 391 for closing the second purge valve 391 is provided.

The first purge valve 381 and the second purge valve 391 are connected to the controller 400. The first and second purge valves 381 and 391 are turned on and off under the control of the controller to turn on and off the first purge valve, , And the ninth pipe is opened and closed in accordance with the on / off of the second purge valve.

Therefore, when the flow rate control means is composed of the needle valve 372, the first orifice 371 and the second orifice 373, the first tank 100 and the second tank 200 maintain the same pressure The compressed air in the second tank 200 is discharged to the second muffler 392 through the ninth pipe 390 and the second purge valve 391 is opened in the second tank 200 The first and second orifices 370 and 370 and the fifth orifice passage 350 and the seventh or seventh conduit 370 through the needle valve 372 to the front end of the first orifice 371 The third channel 330, the fourth channel 340, the first tank 100, the second channel 320, and the third channel 340 are formed on the seventh channel 370, The high pressure is maintained to the front end of the first purge valve 381 in the conduit 310 and the eighth conduit 380.

Conversely, when the first purge valve 381 is opened while the first tank 100 and the second tank 200 maintain the same pressure, the compressed air in the first tank 100 flows through the eighth pipeline 380 The first and second ducts 320 and 320 and the third and fourth ducts 330 and 370 including the first tank 100 as shown in FIG. 4 as they are discharged to the first muffler 382, The second orifice 373 and the second orifice 373 are maintained at a low pressure and relatively lower on the seventh conduit 370 than the second orifice 373 and the sixth conduit 360, The second pipe 200 and the fifth conduit 350 and the first conduit 310 and the ninth conduit 390 maintain the high pressure to the front end of the second purge valve 391.

That is, when either the first purge valve 381 or the second purge valve 391 is selected and opened under the control of the controller 400, the pressure of either the first tank 100 or the second tank 200 is low The compressed air supplied from the compressed air generating apparatus 500 is moved toward the higher one of the first tank 100 or the second tank 200 according to the operation of the shuttle valve 311 The dehumidified compressed air is supplied to the required system 600. A part of the dehumidified compressed air is stably supplied to the first tank 100 or the second tank 200 through the flow rate control means, The first tank 100 and the second tank 200 alternately perform dehumidification and regeneration repeatedly while regenerating the adsorbent.

The control method of the adsorption type air dryer apparatus having such a structure will be described with reference to FIGS. 3 and 4. FIG.

3, when the second purge valve 391 is turned on under the control of the controller 400, the compressed air in the second tank 200 flows through the fifth conduit 350 and the second purge valve 391 The second tank 200 is maintained at a low pressure state and the compressed air generated by the compressed air generator 500 and the first pipe (not shown) is discharged to the outside through the second muffler 392 after being moved to the ninth pipe 390, The compressed air discharged from the compressed air generating apparatus 500 in accordance with the operation of the shuttle valve 311 is supplied to the first tank 100 connected to the first pipeline 310 and the second pipeline 320 at a high pressure, The compressed air introduced into the first tank 100 flows into the first tank 100 through one end of the first tank 100 through the pipeline 310 and the second pipeline 320, The compressed air from which moisture has been removed is supplied to the third channel 330 connected to the other end of the first tank 100 and the fourth channel 340 connected to the third channel 330 ) , The first step is supplied to the fourth conduit 340. The system 600 is connected with is carried out after the.

Here, for convenience, the pressure of the compressed air supplied from the compressed air generating apparatus 500 is assumed to be approximately 7 kgf / cm 2.

Part of the compressed air of about 7 kgf / cm 2, which is moved through the third line 330 during the first step, is moved to the seventh line 370 branched on the third line 330, Is reduced to approximately 0.35 kgf / cm 2 while passing through the first orifice 371 provided on the seventh conduit 370, passes through the needle valve 372 for pressure control, and then passes through the second orifice 373 The sixth channel 360 is moved to the sixth channel 360 and then the sixth channel 360 is moved to the inside of the second tank 200 connected to the other end so that the adsorbent contained in the second tank 200 is dried to regenerate the adsorbent A second step is performed.

Here, it is assumed that the adsorbent of the second tank 200 previously absorbs the moisture of the compressed air to contain moisture.

Thereafter, the compressed air introduced into the second tank 200 and used for regeneration of the adsorbent is discharged through the fifth channel 350 connected to one end of the second tank 200, and the control unit 400 The third purge valve 391 is maintained in the ON state and is then moved to the ninth conduit 390. The third purge valve 390 is then discharged to the outside through the second muffler 392 connected to the ninth conduit 390. [ Step is performed.

Then, the control unit 400 maintains the on-state open time of the second purge valve 391 for about 3 minutes and 50 seconds in the process of passing through the first step, the second step and the third step, A fourth step is performed.

When the control unit 400 turns off the second purge valve 391 through the fourth step, the compressed air discharged from the second tank 200 is not discharged to the outside and is filled in the second tank 200, At this time, the controller 400 controls the first tank 100 and the second tank 200 to have the same pressure of about 7 kgf / cm 2 for about 45 seconds to 50 seconds, preferably about 60 seconds, A fifth step is performed such that the first tank 100 and the second tank 200 have a waiting time of approximately 10 seconds at the same pressure.

4, when the first purge valve 381 is turned on according to the control of the control unit, the compressed air in the first tank 100 is supplied to the second conduit 320 and the first purge valve 381 and then discharged to the outside through the first muffler 382 so that the first tank 100 maintains the low pressure state and the compressed air generated by the compressed air generator 500 The second tank connected to the first pipeline 310 and the fifth pipeline 350 maintains a high pressure state and the compressed air discharged from the compressed air generating apparatus 500 in accordance with the operation of the shuttle valve 311 is approximately The compressed air introduced into the second tank 200 flows into the second tank 200 through one end of the second tank 200 through the first pipeline 310 and the fifth pipeline 350 at a pressure of 7 kgf / The water is removed through the adsorbent accommodated in the second tank 200 and the compressed air from which moisture is removed is discharged to the sixth pipe 360 connected to the other end of the second tank 200 The sixth conduit 340 is connected to the sixth conduit 360 and then the sixth conduit is supplied to the system 600 connected to the fourth conduit 340.

In the sixth step, part of the compressed air moving through the sixth channel 360 moves to the seventh channel 370 branched on the sixth channel 360, and the seventh channel 370 The pressure is reduced to about 0.35 kgf / cm 2 while passing through the second orifice 373 provided on the first orifice 371 and then through the needle valve 372 for pressure control and then through the first orifice 371 to the third conduit The third channel 330 is moved to the inside of the first tank 100 connected to the other end and the adsorbent contained in the first tank 100 is dried to regenerate the adsorbent do.

The compressed air used to regenerate the adsorbent flows into the first tank 100 through the second conduit 320 connected to one end of the first tank 100, The first purge valve 381 is maintained in the ON state and is then moved to the eighth duct 380. The eighth duct 380 is connected to the eighth duct 380 through the first muffler 382, Step is performed.

Then, the control unit 400 maintains the open time of the first purge valve 381 for about 3 minutes and 50 seconds in the process of passing through the sixth step, the seventh step and the eighth step, Is carried out.

When the control unit 400 turns off the first purge valve 381 through the ninth step, the compressed air discharged from the first tank 100 is not discharged to the outside and is filled in the first tank 100, At this time, the controller 400 controls the first tank 100 and the second tank 200 to be in a state of approximately 7 kgf / cm 2, which is the same pressure, for about 40 seconds to 50 seconds, The tenth step having a waiting time of approximately 10 seconds is performed when the first tank 100 and the second tank 200 become equal in pressure.

After the tenth step, the first step is performed again, and the tenth step to the tenth step constitutes one cycle, and the eleventh step in which the cycle is repeated a plurality of times is performed.

If an abnormality occurs in the first orifice 371 and the second orifice 373 on the seventh conduit 370 in the process of the second and seventh steps described above, The dehumidification and regeneration of the first tank 100 and the second tank 200 may not be accurately performed due to instability of the pressure of the first orifice 371 and the second orifice 373 on the seventh conduit 370, The first pressure gauge 710 and the second pressure gauge 720 may be provided adjacent to the first orifice 371 and the second orifice 373, respectively.

The first orifice 371 and the second orifice 373 are formed on the seventh conduit 370 so that the pressure difference between the first orifice 371 and the second orifice 373 can be more accurately determined. The first differential pressure gauge 810 and the second differential pressure gauge 810 may be provided at both the front and rear positions of the second orifice 373 and the pressure difference between the first orifice 371 and the second orifice 373 The first pressure gauge 710, the second pressure gauge 720, the first differential pressure gauge 810, and the second differential pressure gauge 810 may be installed together so as to accurately determine whether the first differential pressure gauge 810 and the second differential pressure gauge 810 are correctly positioned.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the appended claims. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

100: first tank 200: second tank
310: first conduit 311: shuttle valve
320: second conduit 330: third conduit
340: fourth pipeline 350: fifth pipeline
360: Sixth conduit 361: Second main check valve
370: the seventh conduit 371: the first orifice
372: Needle valve 373: Second orifice
380: Eighth pipeline 381: First sebb valve
382: first muffler 390: 9th duct
391: second purge valve 392: second muffler
400: controller 500: compressed air generator
600: System 710: First pressure gauge
720: second pressure gauge 810: first pressure gauge
820: Secondary pressure gauge

Claims (9)

delete delete delete delete delete As a control method of the adsorption type air dryer apparatus,
The second purge valve is opened and the compressed air in the second tank is discharged to the second muffler through the second purge valve and the ninth pipe to control the second tank to be in a low pressure state, The compressed air which is required to be dehumidified is introduced into the first tank through the first conduit, the shuttle valve and the second conduit, dehumidified by the adsorbent in the first tank, and then passed through the third conduit and the fourth conduit To a system that requires dehumidified compressed air through a first stage;
A portion of the compressed air passing through the third conduit passes through the second orifice while being depressurized while passing through the first orifice and the needle valve installed in the seventh conduit and then flows into the second tank through the sixth conduit A second step of regenerating the adsorbent in the second tank;
A third step of discharging the compressed air used for regenerating the adsorbent of the second tank to the second muffler through the second purge valve and the ninth pipe opened through the fifth pipe;
A fourth step wherein the second purge valve is closed after a predetermined time by the control unit;
Wherein the first purge valve and the second purge valve are disposed in the first tank and the second tank so that the pressure of the first tank and the second tank becomes equal to each other within a predetermined time, Step 5;
After the fifth step, the first purge valve is opened by the control unit, and the compressed air in the first tank is discharged to the first muffler via the first purge valve and the eighth duct, so that the first tank becomes low pressure , The second tank is at a high pressure and the compressed air requiring dehumidification is introduced into the second tank through the first conduit, the shuttle valve and the fifth conduit, and then dehumidified by the adsorbent in the second tank. And then supplied to the system requiring compressed air dehumidified through the sixth conduit and the fourth conduit;
A portion of the compressed air passing through the sixth conduit passes through the first orifice while being depressurized while passing through the second orifice provided in the seventh conduit and the needle valve, 1) regenerating the adsorbent in the first tank while being introduced into the first tank;
The compressed air used for regenerating the adsorbent in the first tank is discharged to the first muffler through the first purge valve and the eighth conduit opened through the second conduit;
A ninth step in which the first purge valve is closed after a predetermined time by the control unit;
The first purge valve is closed and the pressure of the first tank and the second tank is made equal to each other within a predetermined time, and then the same pressure of the first tank and the second tank is maintained for a predetermined waiting time Step 10; And
An eleventh step in which the first step to the tenth step are repeated while the first step is performed again after the tenth step and the cycle is repeated several times;
And a control unit for controlling the adsorption type air dryer. The method according to claim 6,
Wherein the second purge valve maintains the open time of 3 minutes and 50 seconds in the fourth step and the first tank and the second tank maintain the same pressure within 60 seconds in the fifth step, Time,
In the ninth step, the opening time of the first purge valve is maintained at 3 minutes and 50 seconds. In the tenth step, the first tank and the second tank are maintained at the same pressure within 60 seconds, Wherein the control unit controls the adsorption-type air dryer unit so that the adsorption-type air dryer unit and the adsorption- The method according to claim 6,
Wherein the first pressure gauge and the second pressure gauge are provided on the seventh conduit so as to individually determine whether the first orifice and the second orifice are abnormal. 9. The method according to claim 6 or 8,
And a first differential pressure gauge and a second differential pressure gauge are provided on the seventh conduit so as to compare and determine the pressures at the forward and backward points of the first orifice and the forward and backward points of the second orifice, respectively.

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