KR20170000934A - Purge and non-purge type compressed air dryer that recycling tank using dryed and compressed air in cooling process and compressed air drying method - Google Patents

Abstract

The present invention relates to a compressed air drying method and a dryer for producing compressed dry air capable of removing moisture from humidifying air using a desiccant and, more specifically, to a compressed air drying method and a dryer, which can reduce the driving time of a blower to reduce power consumption, can reduce the energy by reusing dried air used in a recycling process without discharging the dried air to the outside, and can continuously operate the compressed air dryer through changing a compressed air flow without stopping the operation of the compressed air dryer, even if some components of the compressed air dryer are broken.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a purge and non-purge type compressed air dryer and a compressed air drying method,

The present invention relates to a compressed air drying method and apparatus for producing compressed dry air that removes moisture contained in a humidifier using a desiccant, and more particularly, to a method and apparatus for drying compressed air that can reduce a driving time of a blower to reduce power consumption, Energy can be saved by reusing dry air without releasing it to the outside,

And more particularly, to a compressed air drying method and apparatus capable of continuously operating a compressed air drying apparatus through changing the compressed air flow without stopping the operation of the compressed air drying apparatus even if some components of the compressed air drying apparatus fail.

Generally, compressed air drying apparatus for removing water contained in air is used in a wide variety of industrial fields such as automation equipment, semiconductor manufacturing line, coating line, and chemical process which causes chemical reaction in contact with moisture.

The compressed air drying apparatus includes a freezing type in which the temperature of compressed air is lowered by using a refrigerating compressor, and then the dehumidified water is condensed by condensing the moisture contained in the air, and the moisture contained in the humidifier Is adsorbed on the desiccant.

The adsorption type compressed air drying apparatus is classified into a non-heating type requiring no heat source and a heating type requiring a heat source according to the regeneration method of the desiccant. In the non-heating type, there is a disadvantage in that energy consumption is large due to the consumption of compressed air required for the regeneration work because the heat source is not required, and the heating type is advantageous in that the energy consumption is smaller than that of the non-heating type as the dehumidifying agent is regenerated by the heat source .

The adsorption-type compressed air drying apparatus constitutes two tanks filled with a dehumidifying agent. One tank performs the dehumidification process (dry air production process) of the humidifier while the other tank performs the regeneration process. After a certain time, The process tank is converted to the regeneration process, and the regeneration tank is switched to the dehumidification process (dry air production process).

As shown in Fig. 1, the adsorption-type compressed air drying apparatus constructed by the above heating method includes a first tank 10 and a second tank 20 filled with a dehumidifying agent, various valves for switching the air flow path, A heater 50 installed to heat the dry air, and a cooler 70 installed in the flow path to cool the compressed air.

1 is a view showing a state in which the first tank 10 performs a compressed air dehumidification process and the second tank 20 undergoes a dehumidifying agent regeneration step.

In FIG. 1 and FIG. 2, a thick solid line indicates the air flow in the compressed air dehumidification process of the first tank 10, and a thick dotted line indicates the air flow in the dehumidifier regeneration process of the second tank 20.

When the humidified compressed air WA is supplied to the lower portion of the first tank 10 by the control of the valves 21 and 24 and the 23 valves are opened, wet compressed air WA is introduced into the first tank 10 The compressed and dried air DA is discharged to the upper portion of the first tank 10 to discharge the compressed air that has been dried by the control of the valves 32, 33, and 31, respectively.

The second tank 20 performs the dehumidifying agent regeneration process while the first tank 10 performs the compressed air dehumidification process. The dehumidifying agent regeneration process is divided into a heating process and a cooling process. FIG. 1 shows a state in which the second tank 20 is in a heating process, and FIG. 2 shows a state in which a second tank 20 is in a cooling process.

The blower 40 sucks the air in the atmosphere and heats the air to 200 to 230 DEG C with the heater 50 to control the heated air by the control of the valve (33, 35 valve closed, 34 valve open) 2 tank (20).

After the heated air passes through the second tank 20, the dehumidifying agent in the second tank 20 is heated and regenerated, and then the muffler (not shown) is controlled by the control of the valve (valves 21 and 24 are closed and valves 22 and 37 are opened) 60 to the atmosphere.

After the heating process of the second tank 20 is completed, the heater 50 stops operating and the air supplied from the blower 40 is discharged by the valve control (valve 35 opened, 36 valve closed) The cold air that has been cooled down by the cooler 70 is supplied to the lower portion of the second tank 20 and discharged to the upper portion of the second tank 20 so that the desiccant in the second tank 20 And then discharged through the muffler 60 to the atmosphere.

When the dehumidifying agent regeneration process of the second tank 20 is completed, the first tank 10 is switched to the dehumidifying agent regeneration process in the compressed air dehumidification process and the second tank 20 is regenerated in the dehumidifying agent regeneration process It is converted to a compressed air dehumidification process.

In the conventional compressed air drying method and apparatus constructed as described above, air in the air is sucked in the desiccant regeneration process.

The rainy season air has a high humidity. This high humidity air requires more heat to heat to a constant temperature than the dry air. Further, the blower 40 is operated during the dehumidifying agent regeneration process, and there is a problem that a lot of electric power is consumed and noise is generated in operating the blower 40.

Further, during the regeneration process, the dehumidifying agent is heated and the cooled air is discharged to the atmosphere through the muffler 60. In this process, a large noise is generated for a long time.

Document 1: Korean Patent Registration No. 10-1518297 entitled "Method and Apparatus for Drying Compressed Air Cooling Type Regeneration Tank Using Compressed Dry Air". Document 2: Korean Patent Application No. 10-1509153, entitled " Method and Apparatus for Drying Compressed Air Combined through Cooler after Cooling with Part of Compressed Moisture Air during Cooling Step " Document 3: Korean Patent Registration No. 10-1509152, entitled " Method and Apparatus for Drying Compressed Air to be circulated to a Dehumidifying Tank after Cooling Compressed Moisture Cooler during Cooling Stage "

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide an air conditioner, in which a compressed air produced in a compressed air dehumidification process is heated by a slight pressure through a blower, It is an object of the present invention to provide a compressed air drying method and apparatus capable of drastically reducing power consumption by reducing power consumption of a desiccant regeneration process and preventing a blower from being driven during a cooling process,

Further, during the regeneration process of the dehumidifying agent, the air used in the heating process is not discharged to the atmosphere but is joined with the inlet humidifier, and the mixed air is returned to the compressed air dehumidifying process to produce dried compressed air, Energy can be saved and no noise is generated during the discharge process, and some dry air is circulated without cooling during the cooling process, and then it is joined with the discharge drying air, so that the energy is widened It is an object of the present invention to provide a compressed air drying method and apparatus that saves the compressed air.

It is another object of the present invention to provide a compressed air drying method and apparatus capable of continuously operating a compressed air drying apparatus through changing the compressed air flow without stopping the operation of the compressed air drying apparatus even if some components of the compressed air drying apparatus fail Is an object of the present invention.

In order to accomplish the above object, there is provided a method for drying compressed air using both a purge and a non-purging compressed air using a part of dry air according to the present invention for regeneration, comprising the steps of sucking a humidifier through a suction port (101) A dehumidifying step of discharging the dry air produced by passing through one of the tanks to the discharge port 102; A part of the dry air that has been subjected to the dehumidification process is sucked into the blower 130 and is boosted and heated by the heater 140 to flow into another tank filled with the desiccant to heat and regenerate the desiccant. And a part of the air is branched by the discharge pressure of the dry air produced through the dehumidifying step and heated by the heater 140. The dehumidifying material is heated by heating the dehumidifying material to another tank filled with the dehumidifying agent, A heating step during a regeneration process of regenerating and discharging the regenerated fuel to the outside through the silencer 180; The dry air produced through the dehumidification process is branched, a part of the air is discharged to the discharge port 102, the remaining part of the air is flowed to the tank through the heating step to cool the tank, and the compressed air passing through the heating- A part of the dry air produced through the dehumidification process and flowing to the discharge port 102 is branched into the discharge pressure of the dry air to cool the tank through the heating step, And a cooling step during a regeneration process in which the cooling air cooled in the tank subjected to the heating step is discharged to the outside through the silencer 180.

At this time, the compressed air used for heating and drying the dehumidifying agent in the other tank in the heating step during the regeneration process is cooled by the cooler before merging with the humidifier sucked in the inlet port 101, and is then merged.

In addition, after the compressed air used for heating and drying the dehumidifying agent flows through the other tank in the heating step during the regeneration process, the water is removed by the separator 170 before joining to the suction port 101, So as to be merged.

Further, in the regeneration step, the flow rate of the dry air produced through the dehumidification process in the cooling step is branched and the flow rate control valve is provided in the flow path to the discharge port to adjust the ratio of the dry air flowing into the tank through the discharge port and the heating step .

The compressed air drying apparatus for purge and non-purge combined use of a part of the dry air according to the present invention for the regeneration process is provided in parallel with the flow path connecting the inlet 101 and the outlet 102, A tank 110 and a second tank 120; Valves (201 to 210) for diverting the flow of compressed air to the first tank (110) or the second tank (120); A cooling line 153 having cooling line valves 151 and 152 that are opened only when the compressed air drying apparatus is operated in the non-purging type to flow the cooled compressed air; A heating line 143 having heating line valves 141 and 142 that are opened only when the compressed air drying apparatus is operated in the non-purging type and flows the heated compressed air to the first tank 110 or the second tank 120; A purging line 182 having a purging line valve 181 that is opened only when the compressed air drying apparatus is operated in the purging type and supplies a part of dry air discharged to the discharge port 102 to the heating line 143; A blower 130 for sucking and boosting the dry air discharged to the discharge port 102 in the heating process during the regeneration process when the compressed air drying apparatus is operated in the non-purging type, and supplying it to the heating line 143; A heater 140 for heating the drying air flowing through the heating line 143; A first cooler 150 which cools the compressed air that has cooled the first tank 110 or the second tank 120 to join with the dry air flowing to the discharge port 102; A second cooler 160 for cooling the compressed air heated by the first tank 110 or the second tank 120 to join the humidifier sucked in the inlet 101; And a muffler 180 for discharging the dry air heated or cooled to the first and second tanks 110 and 120 when the compressed air drying apparatus is operated as a purging type.

The separator 170 may further include a separator 170 for removing moisture of the compressed air cooled by the second cooler 160.

The first tank 110 and the second tank 120 are installed in the flow path between the first and second tanks 110 and 120 and the discharge port 102. The first tank 110 or the second tank 120, And a pressure regulating valve 190 for regulating the flow rate of the dry air to be branched into the second tank 120 and the discharge port 102.

The flow control valve 190 has a supply valve 191 and a manual valve 193 and an AUX valve 192 provided in parallel in a flow path connected to the discharge port 102 to lock the supply valve 191, The AUX valve 192 is opened and then the manual valve 193 adjusts the flow rate to adjust the branching ratio.

According to the present invention configured as described above, the produced compressed air is heated so that the blower is operated only during the heating process during the dehumidifying agent regeneration process, and the blower is not driven during the cooling process, thereby reducing power consumption.

In addition, since the compressed air used in the heating process during the dehumidifying agent regeneration process is combined with the inlet humidifier without releasing it to the atmosphere, the mixed air is regenerated by returning to the compressed air dehumidification process, In the cooling process, some of the dry air is circulated without cooling during the cooling process, so that it is combined with the discharge drying air after the cooling, so there is no power consumed in driving the blower, It is possible to reduce the cost.

Further, even if some components of the compressed air drying apparatus fail, there is an effect that the compressed air drying apparatus can be operated continuously by changing the compressed air flow without stopping the operation of the compressed air drying apparatus for maintenance and repair.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 and FIG. 2 are flow diagrams illustrating compressed air flow in a conventional compressed air dryer. FIG.
3 is a circuit diagram of a compressed air drying apparatus according to the present invention.
4 to 7 are circuit diagrams of a non-purge type compressed air drying apparatus of the present invention.
8 to 11 are circuit diagrams of a purge type compressed air drying apparatus of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, the present invention will be described in detail with reference to preferred embodiments of the present invention and the accompanying drawings, wherein like reference numerals refer to like elements.

It is to be understood that when an element is referred to as being "comprising" another element in the description of the invention or in the claims, it is not construed as limiting that the element is comprised only of the element And the like.

As shown in FIG. 3, the compressed air drying apparatus according to the present invention includes an inlet (Wet Air Inlet) 101 through which external air flows into the compressed air drying apparatus, a Dried Air Outlet A first tank 110 and a second tank 120 which are installed in parallel between pipes for connecting the inlet 101 and the discharge port 102 and a discharge port 102 A blower 130 for feeding back the dry air flowing into the first tank 110 or the second tank 102 in the regeneration process heating process, A first cooler 150 and a second cooler 160 for cooling the dry air used in the regeneration process and joining to the pipe on the side of the inlet port 101 or on the side of the discharge port 102, And valves (201 to 210) for diverting the flow of compressed air to the first tank (110) or the second tank (120).

The valves 201 to 210 are opened and closed by a controller (not shown).

While the dehumidifying process in which the tanks of either the first tank 110 or the second tank 120 filled with the dehumidifying agent is dried with the dry air is performed, the remaining tanks are subjected to a regeneration process of drying and regenerating the moisture- .

FIG. 4 is a schematic view showing a state in which the first tank 110 performs a dehumidification process of drying the humidifier with dry air, and the second tank 120 performs a drying process of compressed air Lt; RTI ID = 0.0 > compressed air < / RTI >

The solid line in the figure is a line indicating the flow of compressed air used in the dehumidification process and the dotted line is a line indicating the flow of compressed air used in the heating process during the regeneration process.

4, the humidifier introduced into the compressed air drying apparatus through the inlet 101 is supplied to the lower portion of the first tank 110 through the control of the valve (opening the valve 201 and closing the valve 202 and 203) And the dried compressed air passing through the dehumidifying agent in the first tank 110 is discharged to the discharge port 102 of the compressed air drying apparatus through the control of the valve (valve 205 is open, and valves 206, 207 and 208 are closed).

The blower 130 supplies a part of the dry air produced through the dehumidification process of the first tank 110 and discharged to the discharge port 102 to the second tank 120, Used for dehumidifying agent regeneration process.

The heating line valves 141 and 142 are opened to open the heating line 143 and the blower 130 is combined with the dry air produced through the dehumidification process of the first tank 110 and discharged to the discharge port 102, The heater 140 heats the dry air to a temperature of 200 to 230 ° C. and then transfers the heated dry air to the second tank 120 by controlling the valve (opening the valve 210, opening the valves 207, 208, and 209) As shown in FIG.

While the heated compressed air passes from the upper portion to the lower portion of the second tank 120, the dehumidifying agent in the second tank 120 is heated to remove moisture adsorbed on the desiccant, thereby regenerating the desiccant.

The dry air that has absorbed the moisture of the dehumidifying agent while passing through the second tank 120 is conveyed to the second cooler 160 by the control of the valve (the valve 204 is open and the valves 202 and 203 are closed), and the second cooler 160 ) Cools the hot air and joins the humidifier supplied from the outside through the inlet 101 to the inside of the compressed air drying apparatus as shown in FIG. 4 to re-enter the dehumidification process.

Since the compressed air used in the heating process during the regeneration process is at a high temperature, the efficiency of adsorbing moisture by the dehumidifying agent is very low. Therefore, the compressed air is cooled by the second cooler 160 and then combined with the external humidifier do.

At this time, since the compressed air that has been cooled through the second cooler 160 generates a lot of water during the cooling process, it is preferable to remove water generated through the separator 170 and to join the air to the compressed air drying device from the outside .

After the second tank 120 is heated and regenerated through the heating process during the regeneration process, the second tank 120 is switched to the cooling process during the regeneration process after the heating process is completed.

The cooling process during the regeneration process of the second tank 120 is shown in FIG.

In FIG. 5, the solid line represents the flow of the compressed air used in the dehumidification process state, and the one-dot chain line represents the flow of the compressed air used during the cooling process during the regeneration process of the second tank 120.

The cooling line valves 151 and 152 are opened and the cooling line 153 is opened and the dry air produced in the first tank 110 is controlled by the valves 205, 207 and 152, and valves 206, 208 and 210 are closed. And the rest is supplied to the lower portion of the second tank 120 by the control of the valve (204 valve is open, 202, 203 valve is closed).

The compressed air supplied to the lower part of the second tank 120 flows into the second tank 120 and cools the dehumidifying agent in the second tank 120 and is discharged to the upper part of the second tank 120, (209 valve is opened, 206, 208 and 210 valves are closed) to be cooled to the first cooler 150 and cooled.

Since the desiccant in the second tank 120 is in a heated state, the compressed air having passed through the second tank 120 is in a high temperature state. Therefore, it is cooled through the first cooler 150 and connected to the discharge port 102 of the compressed air drying apparatus It should be joined by piping.

The dry air produced in the first tank 110 is branched into the discharge port 102 side and the second tank 120 as described above and the flow control valve 190 is formed in the flow path to the discharge port 102 It is preferable to configure the flow rate of the dry air to be branched.

5, the flow control valve 190 includes a supply valve 191, a manual valve 193, and an AUX valve 192 in parallel with a pipe directed to the discharge port 102. The supply valve 191 is closed and the AUX valve 192 is opened to open the manual valve 193 in a state in which the AUX valve 192 is opened when the flow rate of the compressed air flowing to the discharge port 102 is adjusted by the flow control valve 190 constructed as above. The flow rate of the compressed air flowing into the discharge port 102 can be adjusted.

Alternatively, the flow rate of the compressed air to be branched may be adjusted by configuring the 205 valve as a proportional control valve. Since the proportional control valve is a well-known technology, a detailed description thereof will be omitted.

As shown in FIGS. 4 and 5, while the first tank 110 performs the regeneration process for about 4 hours, the second tank 120 performs the regeneration process consisting of the heating process for 2 hours and the cooling process for 2 hours.

When the regeneration process of the second tank 120 is completed, the first tank 110 is switched to the regeneration process in the dehumidification process and the second tank 120 is regenerated in the regeneration process and the dehumidification process as shown in Figs. 6 and 7 .

The solid line in the figure is a line indicating the flow of compressed air used in the dehumidification process and the dotted line is a line indicating the flow of compressed air used in the heating process during the regeneration process.

The humidifier introduced into the inlet port 101 by the control of the valve (the valve 203 is opened and the valve 204 is closed) is supplied to the lower part of the second tank 120 and discharged to the upper part. And the dry air flows to the discharge port 102 by the control of the valve (208 valve is opened, 205, 209, 210 valve is closed).

The heating line valves 141 and 142 are opened to open the heating line 143 and a part of the dry air produced and discharged through the dehumidification process of the second tank 120 is sucked by the blower 130, (110) to be used in the heating process during the regeneration process of the first tank (110).

6, the dry air produced through the dehumidification process of the second tank 120 is sucked and transferred to the heater 140. The heater 140 heats the dry air to 200 to 230 DEG C, To the top of the first tank 110 by the control of the valve (207 valve is opened, 205, 206, 210 valve is closed).

While the heated compressed air passes from the upper portion to the lower portion of the first tank 110, the dehumidifying agent in the first tank 120 is heated to remove moisture adsorbed in the desiccant, thereby regenerating the desiccant.

The compressed air that has adsorbed the moisture of the dehumidifying agent while passing through the first tank 110 is conveyed to the second cooler 160 by the control of the valve (the valve is opened 202 and the valve 204 is closed) As shown in FIG. 6, to cool the compressed air in a hot state, and to join the humidifier supplied from the outside to the inside of the compressed air drying apparatus to perform the re-humidification process again.

After the first tank 110 is regenerated and the dehumidifying agent is heated and regenerated, the first tank 110 completes the heating process during the regeneration process and is switched to the cooling process during the regeneration process.

The cooling process during the regeneration process of the first tank 110 is shown in FIG.

In FIG. 7, the solid line represents the flow of the compressed air used in the dehumidification process state, and the one-dot chain line represents the flow of the compressed air used during the cooling process during the regeneration process of the first tank 110.

The cooling line valves 151 and 152 are opened and the cooling line 153 is opened and the dry air produced in the second tank 120 is controlled by the valves 208 and 210 and the valves 205 and 207, And the rest is supplied to the lower portion of the first tank 110 by the control of the valve (the valve 202 is opened and the valve 201, 204 is closed).

The compressed air supplied to the lower portion of the first tank 110 flows to the upper portion of the first tank 110 after cooling the dehumidifying agent in the first tank 110 while flowing in the first tank 110, (206 valve is opened, 205, 207 valve is closed) of the first cooler (150).

Since the dehumidifying agent in the first tank 110 is heated by the heating process during the regeneration process, the compressed air having passed through the first tank 110 is in a high temperature state. Therefore, the dehumidifier in the first tank 110 is cooled through the first cooler 150, To be connected to the discharge port (102).

The dry air produced in the second tank 120 is branched into the discharge port 102 side and the first tank 110 as described above and the flow control valve 190 is formed in the flow path to the discharge port 102 It is preferable to configure the flow rate of the dry air to be branched.

Alternatively, the flow rate of the compressed air to be branched may be adjusted by configuring the 208 valve as a proportional control valve. Since the proportional control valve is a well-known technology, a detailed description thereof will be omitted.

6 and 7, the first tank 110 performs a regeneration process consisting of a heating process of 2 hours and a cooling process of 2 hours while the second tank 110 performs the regeneration process for about 4 hours.

When the regeneration process of the first tank 110 is completed, the second tank 120 is switched to the regeneration process in the dehumidification process as shown in FIGS. 4 and 5, and the first tank 110 is regenerated in the regeneration process .

The compressed air drying method and apparatus according to the present invention configured as described above sucks a part of the dry air flowing into the discharge port 102 by the blower 130 to be used in the regeneration process and discharges the used compressed air to the outside And a part of the dry air is used for the cooling process during the regeneration process by using the discharge pressure of the dry air flowing to the discharge port 102 and the compressed air It is joined to the piping on the side of the discharge port 102 without being discharged to the outside, and is recycled so that there is no loss of compressed air.

Further, since the compressed air used in the regeneration process is not discharged to the outside, noise is not generated and the blower having a large power consumption during the cooling process during the regeneration process is not used, so energy consumption can be greatly reduced.

However, when the compressed air drying apparatus is operated for a long time, a blower or a cooler may fail, and the operation of the compressed air drying apparatus must be emphasized for repairing or maintaining such a trouble.

In order to solve this problem, the present invention operates as a non-purge type in which the compressed air used in the regeneration process of the compressed air drying apparatus is recovered without withdrawing the compressed air as shown in FIGS. 4 to 7 , When the blower or cooler of the compressed air drying system breaks down, or when the blower or cooler must be shut down for the maintenance and repair of the unit, the replacement and repair of parts can be carried out without stopping the entire operation of the compressed air drying unit (Purge type).

8 to 11 are diagrams showing a state in which the compressed air drying apparatus operates in a purge type.

8, the humidifier introduced into the compressed air drying apparatus through the inlet 101 is supplied to the lower portion of the first tank 110 through the control of the valve (opening the valve 201 and closing the valves 202 and 203) And the dried compressed air passing through the dehumidifying agent in the first tank 110 is discharged to the discharge port 102 of the compressed air drying apparatus through the control of the valve (valve 205 is open, and valves 206, 207 and 208 are closed).

At this time, the heating line valves 141 and 142 are closed and the dry air flowing into the discharge port 102 in a state in which the purge line valve 181 is opened is delivered to the heater 140 through the purge line 182 by the discharge pressure, The heater 140 heats the dry air to a temperature of 200 to 230 ° C, and then supplies the heated dry air to the upper portion of the second tank 120 by controlling the valves (210 valves opened, 207, 208, and 209 valves closed).

While the heated compressed air passes from the upper portion to the lower portion of the second tank 120, the dehumidifying agent in the second tank 120 is heated to remove moisture adsorbed on the desiccant, thereby regenerating the desiccant.

The dry air that has adsorbed the moisture of the dehumidifying agent while passing through the second tank 120 is delivered to the silencer 180 by the control of the valve (the valve 204 is open, and the valves 202, 203, 142 and 152 are closed).

Since the blower 130 and the first and second coolers 150 and 160 are not used in this process, the blower 130 and the first and second coolers 150 and 160 can be repaired or replaced without stopping the operation of the compressed air drying apparatus .

When the heating process is completed during the regeneration process of the second tank 120, the second tank 120 is switched to the cooling process during the regeneration process.

9, the humidifier introduced into the compressed air drying apparatus through the inlet 101 is supplied to the lower portion of the first tank 110 through the control of the valve (opening the valve 201 and closing the valve 202 and 203) The compressed air that has passed through the dehumidifying agent in the tank 110 and is dried is discharged to the discharge port 102 of the compressed air drying apparatus through the control of the valve (the valve 205 is open, and the valves 206, 207 and 208 are closed).

The heating line valves 141 and 142 and the cooling line valves 151 and 152 are closed so that the heating line 143 and the cooling line 153 are closed and the drying air flowing into the discharge port 102 in a state where the purge line valve 181 is opened Is returned by the discharge pressure to enter the upper portion of the second tank 120 by the combination of the valves (the valve 210 is opened, and the valves 207, 208 and 209 are closed).

The desiccant inside the second tank 120 is cooled while the dry air passes through the inside of the second tank 120 and the desiccant is discharged to the outside through the muffler 180 by the control of the valve (the valve 204 is open and the valves 202, 203, .

Since the blower 130 and the first and second coolers 150 and 160 are not used in this process, the blower 130, the first and second coolers 150 and 160, and the heater 140 are repaired Or replace it.

8 and 9, when the dehumidification process for the first tank 110 for four hours, the heating process during the regeneration process for the two hours of the second tank 120 and the cooling process during the regeneration process for the time are completed, The first tank 110 is switched to the regeneration process and the second tank 120 is switched to the dehumidification process.

10, the humidifier introduced into the compressed air drying apparatus through the inlet 101 is supplied to the lower portion of the second tank 120 through the control of the valve (opening the valve 203 and closing the valve 201 and 204) And the dried compressed air passing through the dehumidifying agent in the second tank 120 is discharged to the discharge port 102 of the compressed air drying apparatus through the control of the valve (the valve 208 is opened, and the valves 205, 209 and 210 are closed).

At this time, the heating line valves 141 and 142 and the cooling line valves 151 and 152 are closed, and the drying air flowing into the discharge port 102 with the purge line valve 181 opened is transferred to the heater 140 by the discharge pressure, The heater 140 heats the dry air to a temperature of 200 to 230 DEG C, and then supplies the heated dry air to the upper portion of the first tank 110 by controlling the valves (the 207 valves are opened, 205, 206 and 210 valves are closed).

While the heated compressed air passes from the upper portion to the lower portion of the first tank 110, the dehumidifying agent in the first tank 110 is heated to remove moisture adsorbed on the desiccant, thereby regenerating the desiccant.

The dry air that has absorbed the moisture of the dehumidifying agent while passing through the first tank 110 is delivered to the silencer 180 by the control of the valve (the valve 202 is open, and the valves 201, 204, 142 and 152 are closed).

When the heating process is completed during the regeneration process of the first tank 110, the first tank 110 is switched to the cooling process during the regeneration process.

As shown in FIG. 11, the humidifier introduced into the compressed air drying apparatus through the inlet 101 is supplied to the lower portion of the second tank 120 through the control of the valve (opening the valve 203 and closing the valve 201 and 204) The compressed air that has been dried through the dehumidifying agent in the tank 120 is discharged to the discharge port 102 of the compressed air drying apparatus through the control of the valve (valve 208 is opened, valves 205, 209 and 210 are closed).

The heating line valves 141 and 142 and the cooling line valves 151 and 152 are closed so that the heating line 143 and the cooling line 153 are closed and the drying air flowing into the discharge port 102 in a state where the purge line valve 181 is opened Is returned by the discharge pressure to enter the upper portion of the first tank 110 by the combination of the valves (207 valve is opened, 205, 206, 210 valve is closed).

The desiccant inside the first tank 110 is cooled while the drying air passes through the inside of the first tank 110 and the desiccant is discharged to the outside through the silencer 180 by the control of the valve (the valve 202 opens, 201, 204, 142, .

Since the blower 130 and the first and second coolers 150 and 160 are not used in this process, the blower 130 and the first and second coolers 150 and 160 can be repaired or replaced without stopping the operation of the compressed air drying apparatus .

10 and 11, when the dehumidification process of the second tank 120 for 4 hours, the heating process of the regeneration process of the first tank 110 for 2 hours and the cooling process of the regeneration process for the time are completed, The first tank 110 is switched to the dehumidifying process and the second tank 120 is switched to the regeneration process.

According to the present invention configured as described above, the blower is operated only during the heating process during the regeneration process, and the blower is not driven during the cooling process, thereby reducing power consumption.

In addition, since the compressed air used in the heating process during the regeneration process is combined with the inlet humidifier without releasing it to the atmosphere, the mixed air is regenerated by returning to the compressed air dehumidification process, In order to reduce the energy consumed and to prevent the generation of noise during the discharge, some dry air is circulated without cooling during the cooling process, and after cooling, it is combined with the discharge drying air, There is an effect that can be saved.

Further, even if some components of the compressed air drying apparatus fail, there is an effect that the compressed air drying apparatus can be operated continuously by changing the compressed air flow without stopping the operation of the compressed air drying apparatus for maintenance and repair.

The technical idea of the present invention has been described above with reference to the embodiments.

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 or scope of the inventions.

Further, although not explicitly shown or described, those skilled in the art can make various modifications including the technical idea of the present invention from the description of the present invention Which is still within the scope of the present invention.

The above-described embodiments described with reference to the accompanying drawings are described for the purpose of illustrating the present invention, and the scope of the present invention is not limited to these embodiments.

101: inlet
102:
110: first tank
120: Second tank
130: Blower
140: heater
141, 142: Heating line valve
143: Heating line
150: First cooler
151,152: Cooling line valve
153: Cooling line
160: Second Cooler
170: Separator
180: Silencer
181: Purging line valve
182: Purge line
293: Purge valve
190: Flow control valve
191: Supply valve
192: AUX valve
193: Manual valve
201, 202, 203, 204, 205, 206, 207, 208,

Claims (8)

A dehumidifying step of sucking a humidifier through a suction port (101) of the compressed air drying device and passing the produced dry air through one of two tanks filled with a dehumidifying agent to the discharge port (102);
A part of the dry air that has been subjected to the dehumidification process is sucked into the blower 130 and is boosted and heated by the heater 140 to flow to another tank filled with the desiccant to heat and regenerate the desiccant, And the dehumidification process is performed again,
A portion of the dry air produced through the dehumidification process is branched and heated by the heater 140. The dehumidified material is heated and regenerated by flowing into the other tank filled with the dehumidifying agent and then discharged to the outside through the muffler 180 A heating step during a regeneration process;
The dry air produced through the dehumidification process is branched, a part of the air is discharged to the discharge port 102, the remaining part of the air is flowed to the tank through the heating step to cool the tank, and the compressed air passing through the heating- Cooled with the cooler and joined with the dry air flowing into the discharge port 102,
A part of the dry air produced through the dehumidification process and flowing to the discharge port 102 is branched into the discharge pressure of the dry air to flow into the tank through the heating step to cool the drying air, And a regeneration step of regenerating the compressed air in the regeneration process, wherein the regeneration process is a regeneration process of discharging the regeneration air to the outside through the regeneration unit (180).
The method according to claim 1,
In the heating step during the regeneration step,
And the compressed air used for heating the dehumidifying agent by flowing in another tank is cooled and cooled by a cooler before joining with the humidifier sucked in the inlet port 101, Non-fuzzy compressed air drying method.
3. The method of claim 2,
In the heating step during the regeneration step,
The compressed air used for heating and drying the dehumidifying agent by flowing in another tank is cooled, and thereafter the water is removed by the separator (170) before joining to the air intake sucked air introducer (101) A method for drying compressed air using both purging and non-purging, wherein a part of the compressed air is used in a regeneration process.
The method according to claim 1,
In the cooling step during the regeneration process,
Wherein the dry air produced through the dehumidifying step is branched to adjust a ratio of dry air flowing into the tank through the discharge port and the heating stage by providing a flow rate control valve in the flow path to the discharge port. A compressed air drying method for both purge and non-purging used in a regeneration process.
A first tank 110 and a second tank 120, which are installed in parallel in a flow path connecting the inlet 101 and the discharge port 102 and are respectively filled with the dehumidifying agent;
Valves (201 to 210) for diverting the flow of compressed air to the first tank (110) or the second tank (120);
A cooling line 153 having cooling line valves 151 and 152 that are opened only when the compressed air drying apparatus is operated in the non-purging type to flow the cooled compressed air;
A heating line 143 having heating line valves 141 and 142 that are opened only when the compressed air drying apparatus is operated in the non-purging type and flows the heated compressed air to the first tank 110 or the second tank 120;
A purging line 182 having a purging line valve 181 that is opened only when the compressed air drying apparatus is operated in the purging type and supplies a part of dry air discharged to the discharge port 102 to the heating line 143;
A blower 130 for sucking and boosting the dry air discharged to the discharge port 102 in the heating process during the regeneration process when the compressed air drying apparatus is operated in the non-purging type, and supplying it to the heating line 143;
A heater 140 for heating the drying air flowing through the heating line 143;
A first cooler 150 which cools the compressed air that has cooled the first tank 110 or the second tank 120 to join with the dry air flowing to the discharge port 102;
A second cooler 160 for cooling the compressed air heated by the first tank 110 or the second tank 120 to join the humidifier sucked in the inlet 101;
And a silencer (180) for discharging the dry air heated or cooled to the first and second tanks (110, 120) when the compressed air drying apparatus is operated as a purging type. A compressed air drying device for both purge and non-purging.
6. The method of claim 5,
Further comprising a separator (170) for removing moisture of the compressed air cooled by the second cooler (160).
6. The method of claim 5,
And is installed in the flow path between the first and second tanks 110 and 120 and the discharge port 102,
The first tank 110 or the second tank 120 which is produced in the first tank 110 or the second tank 120 and which is a cooling process and the flow rate of the dry air branched to the discharge port 102 And a pressure control valve (190) for controlling the pressure of the compressed air.
8. The method of claim 7,
The flow control valve (190)
A supply valve 191 and a manual valve 193 and an AUX valve 192 are provided in parallel in a flow path connected to the discharge port 102 to lock the supply valve 191 and open the AUX valve 192, A purge and non-purge combined compressed air dryer configured to regulate the flow rate by regulating the flow rate with a valve (193).

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