KR100215335B1 - Pressure swing type air dryer - Google Patents

Abstract

The present invention relates to a dehumidification control device and a control method thereof, wherein the relative humidity of a fluid supplied into a first dehumidification / regeneration container and a second dehumidification / regeneration container is detected to detect the first dehumidification / regeneration container and the second dehumidification / regeneration. By controlling the dehumidification / regeneration process in the vessel, the efficiency of dehumidification / regeneration can be increased, the dehumidification cost can be reduced, and the relative flow of the fluid passing through the adsorbents in the first dehumidification / regeneration vessel and the second dehumidification / regeneration vessel is achieved. Accurately control the switching times of the dehumidification and regeneration processes by detecting humidity, without overburdening the adsorbents in the first dehumidification / regeneration vessel and the second dehumidification / regeneration vessel. It has a very good effect to improve it.

Description

Dehumidification control device and control method {PRESSURE SWING TYPE AIR DRYER}

The present invention relates to a dehumidification control device and a control method thereof, and more particularly, to a dehumidification control device for removing moisture contained in a fluid such as compressed air and a control method thereof.

Conventional dehumidification control apparatus for removing moisture contained in the fluid, such as compressed air and the like to remove the moisture contained in the fluid and the moisture adsorbed by the adsorbent from the adsorbent to the adsorbent to return the adsorbent to the initial state. A dehumidification / regeneration vessel with a heating heater, a valve for opening / closing a fluid supply path to supply fluid into the dehumidification / regeneration vessel, and a dew point of the fluid to measure the amount of moisture contained in the fluid ( DEW POINT) was composed of dew point measuring unit.

The conventional dehumidification control device configured as described above measures the dew point of the fluid in the dehumidification / regeneration vessel in the dew point measuring unit. The valve is then opened so that the user does not open the valve by the control of the control means or supply the fluid to the dehumidification / regeneration vessel according to the dew point of the fluid measured by the dew point measurement unit. Had been closed.

Fig. 6A is a curve showing the rise time of the outlet dew point for the new adsorbent, and Fig. 6B is the curve showing the rise time of the outlet dew point for the adsorbent used for a long time.

However, the conventional dehumidification control apparatus as described above has a high probability that an error occurs with respect to the detected dew point because the change of the dew point at the outlet of the dehumidification / regeneration vessel is very gentle, as shown in Figs. 6A and 6B.

Also, as shown in Figs. 6A and 6B, there was a difference of 2-3 hours between the rise time T1 of the dew point for the new adsorbent and the rise time of the dew point for the adsorbent used for a long time. Therefore, when the adsorbent installed in the dehumidification / regeneration vessel is a new adsorbent, moisture adsorbed on the adsorbent has accumulated. As a result, since the adsorption exceeding the regeneration capacity of the adsorbent occurs, the lifetime of the adsorbent is reduced.

In addition, the dew point measuring unit for measuring the dew point of the fluid is expensive and the dew point measuring unit is difficult to operate.

In addition, the conventional dehumidification control apparatus by detecting dew point has a problem that the progress curve of the dehumidification process cannot be displayed on the operation panel because the change curve of the dew point is gentle.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to reduce the cost of removing moisture from the fluid, to improve the durability of the product, and to dehumidify the dehumidification / regeneration container. It is an object of the present invention to provide a dehumidification control device and a control method thereof capable of accurately determining a reproduction time.

In order to achieve the above object, the dehumidification control device according to the present invention includes a dehumidification / regeneration vessel for removing moisture contained in a fluid by an adsorbent and applying heat to the adsorbent to separate moisture from the adsorbent, and a fluid into the dehumidification / regeneration vessel A first electronic operating valve for opening / closing a fluid supply path to supply a gas, a relative humidity sensor for detecting a relative humidity of a fluid around the adsorbent, and a relative humidity of the adsorbent detected by the relative humidity sensor. (1) Control means for controlling the dehumidification time and the regeneration time of the dehumidification / regeneration vessel by opening / closing the electronic control valve, and receiving a display signal from the control means to determine the relative humidity of the fluid around the adsorbent detected by the relative humidity sensor. Characterized in that it comprises a display means for displaying.

In addition, the control method of the dehumidification control device according to the present invention is such that the relative humidity of the fluid in the dehumidification / regeneration container may reach the set relative humidity within the preset regeneration time set in the control means during the dehumidification / regeneration container. If the dehumidification and alarm sound generation step to continue the dehumidification process and generate an alarm sound to inform the overload, and the same time as the default regeneration time set in the control means during the dehumidification process in the dehumidification / regeneration container A dehumidification / regeneration vessel replacement step of replacing the dehumidification / regeneration vessel to be dehumidified when the relative humidity of the fluid in the dehumidification / regeneration vessel reaches a set relative humidity, and control means during the dehumidification process in the dehumidification / regeneration vessel. The relative humidity of the fluid in the dehumidification / regeneration vessel is set in excess of the preset default regeneration time. When the relative humidity has not been reached, the regeneration stop and dehumidification execution step of continuously executing the dehumidification process in the dehumidification / regeneration vessel under dehumidification without supplying dehumidified air to the other dehumidification / regeneration vessel being regenerated. do.

1 is an external perspective view of a dehumidification control device according to an embodiment of the present invention;

2 is a cross-sectional view of the dehumidification control device shown in FIG.

Figure 3 is a control circuit block diagram of the dehumidification control device according to an embodiment of the present invention.

4A to 4C are flowcharts of a control method of the dehumidification control device according to an embodiment of the present invention.

5 is a graph showing a change in relative humidity of a fluid around an adsorbent in a dehumidification / regeneration vessel in the dehumidification control device according to an embodiment of the present invention.

6 is a graph showing a change in dew point of a fluid discharged from an outlet of a dehumidification / regeneration container in the dehumidification control device according to the prior art.

Explanation of symbols for main parts of the drawings

4: first dehumidification / regeneration container 6: second dehumidification / regeneration container

12: second fluid flow pipe 14: flow control valve

26, 28: adsorbent 30: display means

38: first heater 40: second heater

42: first electronically operated valve 46: third electromagnetically operated valve

56 fourth electronic control valve 62 first relative humidity sensor

66: fifth electronic control valve 70: second relative humidity sensor

80: second check valve 86: control means

116: fifth switching circuit 124: sixth switching circuit

128: seventh switching circuit

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

As shown in FIG. 1, the support leg 2 is contained in a fluid which removes moisture contained in the fluid by the adsorbent 26 and heats the adsorbent 26 to separate the moisture from the adsorbent 26. A first dehumidification / regeneration vessel (4) for removing moisture, and a second for removing moisture from the adsorbent (28) by removing moisture contained in the fluid by the adsorbent (28) and applying heat to the adsorbent (28). The dehumidification / regeneration container 6 is provided.

In one embodiment of the present invention, the regeneration means that the moisture absorbed in the adsorbents 26 and 28 is separated from the adsorbents 26 and 28 by applying heat to the adsorbents 26 and 28. Means to return (26, 28) to its original state.

When the first dehumidification / regeneration vessel 4 and the second dehumidification / regeneration vessel 6 are regenerated between the first dehumidification / regeneration vessel 4 and the second dehumidification / regeneration vessel 6. A water discharge pipe 8 for discharging water in the first dehumidification / regeneration container 4 and the second dehumidification / regeneration container 6 is provided.

Between the first dehumidification / regeneration vessel 4 and the second dehumidification / regeneration vessel 6, a fluid is supplied from an external fluid supply means (not shown), and the first dehumidification / regeneration vessel 4 is connected with the first dehumidification / regeneration vessel 4. The first dehumidification / regeneration vessel 4 and the first dehumidification / regeneration vessel 4 and the second dehumidification / regeneration vessel 6 and the second dehumidification / regeneration vessel 6 are simultaneously supplied to the second dehumidification / regeneration vessel 6. A fluid flow tube 10 is provided to discharge moisture in the second dehumidification / regeneration container 6.

The regeneration of the first dehumidification / regeneration vessel 4 and the second dehumidification / regeneration vessel 6 is performed between the first dehumidification / regeneration vessel 4 and the second dehumidification / regeneration vessel 6. 1 to supply a part of the dehumidified fluid from the dehumidification / regeneration vessel 4 and the second dehumidification / regeneration vessel 6 to the first dehumidification / regeneration vessel 4 and the second dehumidification / regeneration vessel 6. The second fluid flow pipe 12 is provided.

The second fluid flow pipe 12 is provided with a flow rate control valve 14 that cuts down the amount of fluid flowing in the second fluid flow pipe 12.

The pressure of the fluid in the fluid flow tube 10 above the first dehumidification / regeneration vessel 4 between the first dehumidification / regeneration vessel 4 and the second dehumidification / regeneration vessel 6. The 1st pressure gauge 16 which displays is provided. Between the first dehumidification / regeneration vessel 4 and the second dehumidification / regeneration vessel 6, a second pressure gauge 18 for indicating the pressure of the fluid in the second fluid flow tube 12 is installed. It is. Between the first dehumidification / regeneration vessel 4 and the second dehumidification / regeneration vessel 6, the fluid in the second fluid flow tube 12 above the first dehumidification / regeneration vessel 4 is formed. A third pressure gauge 20 for displaying the pressure is provided.

Between the first dehumidification / regeneration container 4 and the second dehumidification / regeneration container 6, a user's operation command regarding dehumidification is input, and the first dehumidification / regeneration container 4 and the second are carried out. The operation panel 22 which displays the dehumidification state in the dehumidification / regeneration container 6 is provided.

The operation panel 22 is a power supply and operation start switch 24 for supplying power to the inside of the product and at the same time starting the dehumidification operation, the first dehumidification / regeneration vessel 4 and the second dehumidification / regeneration vessel ( 6) the display means 30 which displays the relative humidity of the adsorbents 26 and 28 in the inside, and the volume | volume regarding the dehumidification state in the said 1st dehumidification / regeneration container 4, and the said 2nd dehumidification / regeneration container 6. It consists of a speaker 32 for outputting.

FIG. 2 is a cross-sectional view of the dehumidification control device showing the hydraulic circuit of the dehumidification control device shown in FIG. As shown in FIG. 2, the fluid flow pipe (not shown) supplies fluid from the external fluid supply means (not shown) to the first dehumidification / regeneration vessel 4 and the second dehumidification / regeneration vessel 6. 10, an inlet 34 is formed.

The second fluid flow tube 12 is formed with an outlet 36 to supply the dehumidified fluid from the first dehumidification / regeneration container 4 and the second dehumidification / regeneration container 6 to a desired location. .

The moisture contained in the fluid passing through the first dehumidification / regeneration vessel 4 and the second dehumidification / regeneration vessel 6 in the first dehumidification / regeneration vessel 4 and the second dehumidification / regeneration vessel 6. Adsorbents 26 and 28 are provided to absorb the water. The adsorbents 26 and 28 are powders of polymeric materials that absorb moisture and evaporate the moisture when subjected to heat.

In the first dehumidification / regeneration vessel 4 and the second dehumidification / regeneration vessel 6, heat is applied to the adsorbents 26 and 28 to evaporate the moisture absorbed by the adsorbents 26 and 28. The 1st heater 38 and the 2nd heater 40 are provided, respectively.

The inlet 34 to open / close the flow path for selectively supplying the fluid flowing from the inlet 34 to one of the first dehumidification / regeneration vessel 4 and the second dehumidification / regeneration vessel 6. The 1st solenoid valve 42 is provided in this.

The outlet 36 may be configured to open and close a flow path for supplying the dehumidified fluid from one of the first dehumidification / regeneration container 4 and the second dehumidification / regeneration container 6 to a desired location. The electromagnetic operation valve 44 is provided.

A third electronic operation to open and close the flow path for discharging water from the vessel in which the regeneration process is in progress among the first dehumidification / regeneration vessel 4 and the second dehumidification / regeneration vessel 6 to the water discharge pipe 8; The valve 46 is provided.

On the upper surface and the lower surface of the first dehumidification / regeneration container 4, the first dehumidification /

An adsorbent 26 is installed in the regeneration vessel 4, or the adsorbent distribution hole 48 is disposed to discharge the adsorbent 26 in the first dehumidification / regeneration vessel 4 to the outside of the first dehumidification / regeneration vessel 4. ) Is formed. The adsorbent distribution hole 48 is closed by a cock 50 to prevent the adsorbent 26 in the first dehumidification / regeneration vessel 4 from escaping to the outside.

An adsorbent 28 is installed in the second dehumidification / regeneration vessel 6 on the upper and lower surfaces of the second dehumidification / regeneration vessel 6 or the adsorbent 28 in the second dehumidification / regeneration vessel 6. The second distribution hole 52 is formed to discharge the gas to the outside of the second dehumidification / regeneration container 6. The second flow hole 52 is closed by a second cock 54 to prevent the adsorbent 26 in the second dehumidification / regeneration vessel 6 from escaping to the outside.

The first dehumidification / regeneration vessel 4 is provided with a fourth solenoid valve 56 so as to pass / block a fluid around the adsorbent in the first dehumidification / regeneration vessel 4. The filter 58 is connected to the fourth solenoid valve 56 so as to filter foreign matter contained in the fluid that has passed through the fourth solenoid valve 56. The filter 58 is provided with a first relative humidity sensor 62 to detect the relative humidity of the fluid passing through the filter 58.

An air hole 64 is formed at the bottom of the first relative humidity sensor 62 to circulate the fluid in the first relative humidity sensor 62. An electric wire 65 is connected to the first relative humidity sensor 62 so as to transmit the relative humidity detected by the first relative humidity sensor 62 to a control means described later.

The second dehumidification / regeneration vessel 6 is provided with a fifth solenoid valve 66 so as to pass / block fluid around the adsorbent in the second dehumidification / regeneration vessel 6. A second filter 68 is connected to the fifth solenoid valve 66 so as to filter foreign matter contained in the fluid that has passed through the fifth solenoid valve 66. The second filter 68 is provided with a second relative humidity sensor 70 to detect the relative humidity of the fluid passing through the second filter 68.

A second air hole 72 is formed at the bottom of the second relative humidity sensor 70 to circulate the fluid in the second relative humidity sensor 70. An electric wire 74 is connected to the second relative humidity sensor 70 so as to transmit the relative humidity detected by the second relative humidity sensor 70 to a control means described later.

An orifice 76 is formed in the second fluid flow tube 12 to reduce the pressure of the fluid flowing from the second solenoid valve 44 in the upward direction of the second fluid flow tube 12.

The second fluid flow tube 12 is provided with a first check valve 78 to allow fluid to flow only from the orifice 76 in the direction of the first dehumidification / regeneration vessel 4.

The second fluid flow pipe 12 is provided with a second check valve 80 so that the fluid flows only from the orifice 76 in the direction of the second dehumidification / regeneration container 6.

The first dehumidification / regeneration vessel 4 has a support 82 for stably coupling the fluid flow tube 10 and the second fluid flow tube 12 to the first dehumidification / regeneration vessel 4. Formed.

The second dehumidification / regeneration vessel 6 has a support 84 for stably coupling the fluid flow tube 10 and the second fluid flow tube 12 to the first dehumidification / regeneration vessel 4. Formed.

As shown in Fig. 3, the control means 86 is a microcomputer for controlling the dehumidification and regeneration operations of the dehumidification control apparatus according to the embodiment of the present invention.

The DC voltage generating means 88 receives the AC voltage of 220V from the external AC power supply 90 via the power supply and operation start switch 24 and outputs a DC voltage of 5V to the control means 86. It is connected to the control means 86.

A bridge diode 94 is connected to the first relative humidity sensor 62 to convert the voltage output from the first relative humidity sensor 62 into a periodic wave voltage. The bridge diode 94 is connected with a smoothing circuit 96 for smoothing the periodic wave voltage output from the bridge diode 94 and converting it into a direct current voltage. An analog-digital surface changer 98 is connected to the smoothing circuit 96 so as to output a digital value of a binary number corresponding to the DC voltage output from the smoothing circuit 96 to the control means 86.

The bridge diode 100 having the same function as the bridge diode 94, the smoothing circuit 96, and the analog-to-digital converter 98 connected to the first relative humidity sensor 62 is also connected to the second relative humidity sensor 70. ), A smoothing circuit 102 and an analog-to-digital converter 104 are connected.

The first switching circuit 106 supplies or cuts the DC voltage output from the DC voltage generating means 88 to the first electronic control valve 42 according to the control signal output from the control means 86. It is connected to the control means 86.

The second switching circuit 108 supplies or cuts the DC voltage output from the DC voltage generating means 88 to the second electronic control valve 44 in accordance with the control signal output from the control means 86. It is connected to the control means 86.

The third switching circuit 112 supplies / blocks the DC voltage output from the DC voltage generating means 88 to the third electronic control valve 46 according to the control signal output from the control means 86. It is connected to the control means 86.

The fourth switching circuit 114 is configured to supply / block the DC voltage output from the DC voltage generating means 88 to the fourth electronic control valve 56 according to the control signal output from the control means 86. It is connected to the control means 86.

The fifth switching circuit 116 is configured to supply / block the DC voltage output from the DC voltage generating means 88 to the fifth electronic control valve 66 according to the control signal output from the control means 86. It is connected to the control means 86.

The display means 30 receives a display signal from the control means 86, a first humidity indicator 118 for displaying the relative humidity of the fluid in the first dehumidification / regeneration vessel 4, and the control means 86. A second humidity indicator 120 for receiving a display signal from the second dehumidification / regeneration vessel 6 and displaying a relative humidity of the fluid in the second dehumidification / regeneration vessel 6; 4) and a dehumidification / regeneration time display portion 122 for separately displaying the dehumidification time and the regeneration time of the second dehumidification / regeneration container 6, respectively.

The sixth switching circuit 124 is configured to supply / block the DC voltage output from the DC voltage generating means 88 to the first heater 38 according to the control signal output from the control means 86. 86).

The seventh switching circuit 128 supplies the DC voltage output from the DC voltage generating means 88 to the second heater 40 according to the control signal output from the control means 86. 86).

Hereinafter, a control method of a dehumidification control device according to an embodiment of the present invention in connection with a dehumidification control device according to an embodiment of the present invention will be described in detail with reference to FIG. 4.

In Fig. 4, S denotes a step STEP.

As an initial condition for operation description, the power supply and operation start switch 24 is turned off, the inlet 34 is connected to an external fluid supply means (not shown), and the outlet 36 is a user. Assume that is connected to where you want to supply fluid.

Meanwhile, as shown in FIG. 2, it is assumed that the first electromagnetic control valve 42 is positioned to close the right flow path of the fluid flow pipe 10. On the other hand, it is assumed that the second solenoid valve 44 is positioned to close the right flow path of the second fluid flow tube 12 as shown in FIG. On the other hand, it is assumed that the third solenoid valve 46 is positioned to close the left flow path of the fluid flow pipe (10).

On the other hand, it is assumed that the fourth solenoid valve 56 and the fifth solenoid valve 66 is closed. On the other hand, it is assumed that the flow control valve 14 is open. On the other hand, it is assumed that no voltage is supplied to the first heater 38 and the second heater 40.

First, when the user turns on the power supply and operation switch 24 in step S1, the DC voltage generating means 88 from the external AC power supply 90 via the power supply and operation start switch 24 in step S2. A DC voltage of 220 V is supplied to the control unit. Then, a DC voltage of 5 V is output from the DC voltage generating unit 88 to the control unit 86.

Subsequently, in step S3, a control signal is output from the control means 86 to the fourth switching circuit 114, the fifth switching circuit 116, and the seventh switching circuit 128. Then, the fourth switching circuit 114, the fifth switching circuit 116, and the seventh switching circuit 128 are turned on. A DC voltage of 12 V is output from the DC voltage generating means 88 to the fourth electronic control valve 56 via the fourth switching circuit 114. The fourth electronically operated valve 56 is then opened. At the same time, a DC voltage of 12 V is output from the DC voltage generating means 88 to the fifth electronic control valve 66 via the fifth switching circuit 116. The fifth solenoid valve 66 is then opened. At the same time, a DC voltage of 12V is applied from the DC voltage generating means 88 to the second heater 40 via the seventh switching circuit 128. Then heat is generated from the second heater 40.

Next, in step S4, the fluid is supplied from the inlet 34 to the first dehumidification / regeneration container 4 through the first solenoid valve 42.

Then, in step S5, moisture contained in the fluid is adsorbed to the adsorbent in the first dehumidification / regeneration vessel 4 to remove moisture from the fluid. The dehumidified fluid is then discharged from the first dehumidification / regeneration vessel 4 to the second fluid flow conduit 12. Next, the fluid reaching the second fluid flow pipe 12 passes through the second solenoid valve 44 to the outlet 36 and at the same time the fluid reaches the second fluid flow pipe 12. Some of them pass through the second solenoid valve 44 and move in the direction of the flow regulating valve 14. Fluid flowing through the second solenoid valve 44 in the direction of the flow regulating valve 14 passes through the second solenoid valve 44 and moves to the outlet 36 through 5 to 5. 10%.

Subsequently, in step S6, fluid is supplied from the adsorbent 26 in the first dehumidification / regeneration vessel 26 to the first relative humidity sensor 62 via the fourth electromagnetic control valve 56 and the filter 58. Supplied. The first dehumidification / regeneration vessel is then transferred from the first relative humidity sensor 62 to the control means 86 via the bridge diode 94, the smoothing circuit 96 and the analog-to-digital converter 98. The relative humidity of the fluid in (4) is output. The display signal is then output from the control means 86 to the first humidity indicator 118. The relative humidity of the fluid in the first dehumidification / regeneration vessel 4 is then displayed on the first humidity indicator 118.

The relative humidity of the fluid in the first dehumidification / regeneration vessel 4 is displayed on the first humidity indicator 118 and at the same time, the dehumidification time and the regeneration time from the control means 86 to the dehumidification / regeneration time display portion 122. Is output. Then, the first dehumidification / regeneration vessel (from the time point at which fluid starts to be supplied into the first dehumidification / regeneration vessel 4 via the first electronic control valve 42 in the dehumidification / regeneration time display portion 122) 4) Dehumidification time which elapsed when dehumidifying adsorbent in it is displayed. At the same time, in the dehumidification / regeneration time display section 122, the second dehumidification / regeneration container 6 starts from the time when the fluid starts to be supplied into the first dehumidification / regeneration vessel 4 via the first electromagnetic control valve 42. The regeneration time that has elapsed since the regeneration of the adsorbent in () is displayed.

Next, in step S7, the fluid discharged from the outlet 36 is moved to a place desired by the user through a connecting pipe (not shown).

At the same time as the fluid is discharged from the outlet 36, the fluid which has passed through the second solenoid valve 44 in the direction of the flow control valve 14 in step S8 passes through the second check valve 80. Is supplied into the second dehumidification / regeneration vessel 6. The moisture absorbed by the adsorbent in the second dehumidification / regeneration vessel 6 is then absorbed by the fluid supplied into the second dehumidification / regeneration vessel 6 by the dehumidified fluid. The fluid absorbing the moisture then passes through the third solenoid valve 46 to reach the water discharge tube 8.

Subsequently, fluid is supplied from the adsorbent in the second dehumidification / regeneration vessel 6 to the second relative humidity sensor 70 via the fifth solenoid valve 66 and the second filter 68. The second dehumidification / regeneration vessel is then transferred from the second relative humidity sensor 70 to the control means 86 via the bridge diode 100, the smoothing circuit 102 and the analog-digital converter 104. The relative humidity of the fluid in 6 is output. Then, a display signal is output from the control means 86 to the second humidity indicator 120. The relative humidity of the fluid in the second dehumidification / regeneration vessel 6 is then displayed on the second humidity indicator 120.

Next, in step S9, the fluid absorbing the moisture is discharged from the water discharge pipe 8 into the atmosphere outside of the first dehumidification / regeneration container 4 and the second dehumidification / regeneration container 6. The adsorbent 28 in the second dehumidification / regeneration vessel 6 is then regenerated.

Next, in the step S10, the control means 86 passes the first electromagnetic control valve 42 and the time elapsed from the time when the fluid is supplied into the first dehumidification / regeneration vessel 4 to the present time is controlled. It is determined whether the means 86 is smaller than the basic reproduction time set in advance. The default reproduction time set in advance in the control means 86 is, for example, 4 hours. As a result of this determination, the basic regeneration time set in advance by the control means 86 is the time elapsed from the time when the fluid was supplied to the first dehumidification / regeneration container 4 through the first solenoid valve 42 to the present. If it is determined that it is not smaller, the flow proceeds to step S11 (if NO).

In step S11, the control means 86 passes through the first solenoid valve 42 and the time elapsed from the time when the fluid is supplied into the first dehumidification / regeneration container 4 to the present time is controlled by the control means 86. Determine whether or not the same as the default playback time set in advance. As a result of this determination, the time elapsed from the time when the fluid is supplied into the first dehumidification / regeneration container 4 through the first electronic control valve 42 to the present time is set in advance to the control means 86 in the basic regeneration time. If it is determined to be equal to (YES), the flow proceeds to step S12.

In step S12, the control means 86 determines whether the relative humidity input from the first relative humidity sensor 62 is equal to the set humidity. As a result of this determination, when it is determined that the relative humidity input from the first relative humidity sensor 62 is equal to the set humidity, the flow proceeds to step S12 (if YES).

In step S13, the first switching circuit 106, the second switching circuit 108, the third switching circuit 112, the sixth switching circuit 124 and the seventh switching circuit 128 from the control means 86. The control signal is output to. Then, the first switching circuit 106, the second switching circuit 108, the third switching circuit 112, and the sixth switching circuit 124 are turned on. At the same time, the seventh switching circuit 128 is turned off. Next, a DC voltage of 12 V is output from the DC voltage generating means 88 to the first electromagnetic operation valve 42 via the first switching circuit 106. At the same time, a DC voltage of 12 V is output from the DC voltage generating means 88 to the second electromagnetic operation valve 44 via the second switching circuit 108. At the same time, a DC voltage of 12V is output from the DC voltage generating means 88 to the third electromagnetic operation valve 46 via the third switching circuit 112. Then, the first electromagnetic control valve 42 moves to close the left flow path of the fluid flow pipe 10. At the same time, the second solenoid valve 44 moves to close the left flow passage of the second fluid flow tube 12. At the same time, the third solenoid valve 46 moves to close the right flow passage of the fluid flow pipe 10. At the same time, a DC voltage of 12 V is output from the DC voltage generating means 88 to the first heater 38 via the sixth switching circuit 124. The first heater 38 is then heated. At the same time, since the fifth switching circuit 116 is turned off, no voltage is applied to the second heater 40 from the DC voltage generator 88 so that no heat is generated from the second heater 40.

Next, in step S14, the fluid is supplied from the inlet 34 to the second dehumidification / regeneration container 6 through the first solenoid valve 42.

The moisture contained in the fluid is then adsorbed to the adsorbent in the second dehumidification / regeneration vessel 6 to remove moisture from the fluid. The dehumidified fluid is then discharged from the second dehumidification / regeneration vessel 6 to the second fluid flow conduit 12. The fluid which has reached the second fluid flow tube 12 next moves through the second solenoid valve 44 to the outlet 36 and at the same time reaches the second fluid flow tube 12. Some of them pass through the second solenoid valve 44 and move in the direction of the flow regulating valve 14. The fluid moving through the second solenoid valve 44 in the direction of the flow regulating valve 14 passes through the second solenoid valve 44 and moves to the outlet 36 through 5 to 5. 10%.

Subsequently, in step S16, the second relative humidity sensor 70 is moved from the adsorbent 28 in the second dehumidification / regeneration vessel 6 via the fifth solenoid valve 66 and the second filter 68. Fluid is supplied. The second dehumidification / regeneration vessel is then transferred from the second relative humidity sensor 70 to the control means 86 via the bridge diode 100, the smoothing circuit 102 and the analog-digital converter 104. The relative humidity of the fluid in (6) is output. Then, a display signal is output from the control means 86 to the second humidity indicator 120. The relative humidity of the fluid in the second dehumidification / regeneration vessel 6 is then displayed on the second humidity indicator 120.

The relative humidity of the fluid in the second dehumidification / regeneration vessel 6 is displayed on the second humidity indicator 120 and at the same time, the dehumidification time and the regeneration time from the control means 86 to the dehumidification / regeneration time display portion 122. Is output. Then, the dehumidification / regeneration time display unit 122 dehumidifies the dehumidifying agent 28 in the second dehumidification / regeneration vessel 6 from the time when the closing direction of the first electronic control valve 42 is changed. The time is displayed. At the same time, the dehumidification / regeneration time display section 122 regenerates the regeneration of the adsorbent 26 in the first dehumidification / regeneration vessel 4 from the time when the dehumidification / regeneration time display unit 122 changes to the closing direction of the first electronic control valve 42. The time is displayed.

Next, in step S17, the fluid discharged from the outlet 36 is moved to a place desired by the user through a connecting pipe (not shown).

At the same time as the fluid is discharged from the outlet 36, the fluid which has passed through the second solenoid valve 44 in the direction of the flow control valve 14 in step S18 passes through the first check valve 78. Is supplied into the first dehumidification / regeneration vessel 4. Then, the moisture absorbed by the adsorbent 26 in the first dehumidification / regeneration vessel 4 by the dehumidified fluid is absorbed by the fluid supplied into the second dehumidification / regeneration vessel 6. The fluid absorbing the moisture then passes through the third solenoid valve 46 to reach the water discharge tube 8.

Subsequently, fluid is supplied from the adsorbent 26 in the first dehumidification / regeneration vessel 4 to the first relative humidity sensor 62 via the fourth electromagnetic control valve 56 and the filter 58. The first dehumidification / regeneration vessel is then transferred from the first relative humidity sensor 62 to the control means 86 via the bridge diode 94, the smoothing circuit 96 and the analog-to-digital converter 98. The relative humidity of the fluid in (4) is output. Then, a display signal is output from the control means 86 to the first humidity indicator 118. The relative humidity of the fluid in the first dehumidification / regeneration vessel 4 is then displayed on the first humidity indicator 118.

Next, in step S19, the moisture absorbed fluid is discharged from the water discharge pipe 8 into the atmosphere outside of the first dehumidification / regeneration vessel 4 and the second dehumidification / regeneration vessel 6. The adsorbent in the first dehumidification / regeneration vessel 4 is then regenerated.

Next, in step S20, the control means 86 dehumidifies the dehumidifying time that elapses from dehumidifying the adsorbent in the second dehumidification / regeneration vessel 6 from the time when the closing direction of the first electronic control valve 42 is changed. It is determined whether the control means 86 is smaller than the preset basic reproduction time. As a result of this determination, when it is determined that the time elapsed from the time of turning on the power supply and operation start switch 24 to the present is not less than the basic reproduction time preset in the control means 86 (if NO) Proceed to step S21.

In step S21, the control means 86 determines whether the time elapsed from the time of turning on the power supply and operation start switch 24 to the present is equal to the default reproduction time set in the control means 86 in advance. As a result of this determination, if it is determined that the time elapsed from the time of turning on the power supply and operation start switch 24 to the present is equal to the basic reproduction time preset in the control means 86 (if YES) Proceed to S22.

In step S22, the control means 86 determines whether the relative humidity input from the second relative humidity sensor 70 is equal to the set humidity. As a result of this determination, when it is determined that the relative humidity input from the second relative humidity sensor 70 is equal to the set humidity, the flow proceeds to step S23 (if YES).

In step S23, the first switching circuit 106, the second switching circuit 108, the third switching circuit 112, the sixth switching circuit 124, and the seventh switching circuit 128 are released from the control means 86. The control signal is output to. The first switching circuit 106, the second switching circuit 108, the third switching circuit 112, and the sixth switching circuit 124 are turned off. At the same time, the seventh switching circuit 128 is turned on.

Subsequently, no voltage is applied from the DC voltage generating means 88 to the first solenoid valve 42 so that the first solenoid valve 42 is at an initial position. Then, the first electronic control valve 42 is moved to close the right flow path of the fluid flow pipe 10. At the same time, no voltage is applied from the DC voltage generating means 88 to the second solenoid valve 44 so that the second solenoid valve 44 is in the initial position. Then, the second electromagnetic operation valve 44 moves to close the right flow passage of the second fluid flow pipe 12. At the same time, a voltage is not applied from the DC voltage generating means 88 to the third electromagnetic operation valve 46, so that the third electromagnetic operation valve 46 is at the initial position. Then, the third solenoid valve 46 is moved to close the left flow path of the fluid flow tube 10. At the same time, no voltage is applied to the first heater 38 from the DC voltage generating means 88. No heat is generated from the first heater 38.

At the same time, no voltage is applied to the second heater 40 from the DC voltage generating means 88 so that heat is not generated from the second heater 40. At the same time, a DC voltage of 12V is applied from the DC voltage generating means 88 to the second heater 40 via the seventh switching circuit 128. Then heat is generated from the second heater 40.

Next, in step S24, the control means 86 determines whether the power supply and operation start switch 24 is in the silver state. As a result of this determination, when it is determined that the power supply and operation start switch 24 is not in the silver state (if NO), the control means 86 is because the power supply and operation start switch 24 is in an off state. The control signal is output from the first switching circuit 106 to the eighth switching circuit 130. Since the voltage is not applied from the DC voltage generating means 88 to the first solenoid valve 42 to the flow regulating valve 14, the first solenoid valve 42 to the flow regulating valve 14 is in an initial state. Is located. At the same time, since the voltage is not applied to the first heater 38 and the second heater 40 from the DC voltage generating means 88, the first heater 38 and the second heater 40 do not generate heat.

On the other hand, in step S10, the control means 86 passes the first electromagnetic control valve 42 and the time elapsed from the time when the fluid is supplied into the first dehumidification / regeneration vessel 4 to the present time is controlled. If it is determined in the means 86 that it is smaller than the preset basic playback time, the process proceeds to step S25 (if YES).

In step S25, the control means 86 determines whether the relative humidity input from the first relative humidity sensor 62 to the control means 86 is equal to or greater than a preset relative humidity set in the control means 86. The preset relative humidity set in advance in the control means 86 is, for example, 100%. As a result of this determination, when it is determined from the first relative humidity sensor 62 that the relative humidity input to the control means 86 is equal to or higher than the preset relative humidity set in the control means 86 (in case of YES) Since the moisture contained in the fluid is so high that the adsorbent in the first dehumidification / regeneration vessel 4 absorbs the moisture quickly, the flow proceeds to step S26.

In step S26, the sound signal is output from the control means 86 to the speaker 32. Then, a warning sound is generated that the current fluid supply state from the speaker 32 is overloaded. The user then hears the warning sound from the speaker 32 and takes the necessary action.

On the other hand, when it is determined in step S25 that the relative humidity input from the first relative humidity sensor 62 to the control means 86 is not greater than or equal to a preset relative humidity set in the control means 86 (N0 day). In the case), the process proceeds to step S4 to remove moisture contained in the fluid supplied into the first dehumidification / regeneration container 4 as described above.

On the other hand, in the step S11, the time elapsed from the time when the fluid is supplied into the first dehumidification / regeneration vessel 4 from the external fluid supply means through the first electromagnetic operation valve 42 is the control means. If the control means 86 determines that it is not equal to the preset basic playback time at 86, it proceeds to step S27 (if NO).

In step S27, the control means 86 passes from the external fluid supply means to the first dehumidification / regeneration vessel 4 through the first electronic operation valve 42, and has elapsed from the present time to the present. It is determined whether the control means 86 is larger than the basic reproduction time set in advance. As a result of this determination, the time elapsed from the time when the fluid is supplied from the external fluid supply means to the first dehumidification / regeneration vessel 4 through the first electromagnetic operation valve 42 is the control means 86. If it is determined that is greater than the preset basic playback time, the process proceeds to step S28 (if YES).

In step S28, the control means 86 determines whether the relative humidity input from the first relative humidity sensor 62 to the control means 86 is equal to or higher than the preset relative humidity set in the control means 86. As a result of this determination, when it is determined from the first relative humidity sensor 62 that the relative humidity input to the control means 86 is equal to or higher than the preset relative humidity set in the control means 86 (if YES) Since a sufficient amount of moisture is absorbed by the adsorbent 26 in the first dehumidification / regeneration vessel 4, the flow proceeds to the step Sl3 and the first electromagnetic operation valve 42 and the second electronic operation as described above. The valve closing state of the valve 44 and the third solenoid valve 46 is changed, and the heating state of the first heater 38 and the second heater 40 is changed.

On the other hand, when it is determined in step S28 that the relative humidity input from the first relative humidity sensor 62 to the control means 86 is not greater than or equal to a preset relative humidity set in the control means 86 (NO day). In this case, the second dehumidification / regeneration vessel 6 is sufficiently regenerated so that a part of the fluid passing through the first dehumidification / regeneration vessel 4 does not need to be supplied to the second dehumidification / regeneration vessel 6. The process proceeds to step S29.

In step S29, the control signal is output from the control means 86 to the eighth switching circuit 130. Then, the eighth switching circuit 130 is turned on. Subsequently, a DC voltage of 12 V is applied from the DC voltage generating means 88 to the flow rate control valve 14 via the eighth switching circuit 130. As a result, the flow control valve 14 is closed to close the flow path between the second solenoid valve 44 and the orifice 76. Therefore, the fluid dehumidified while passing through the first dehumidification / regeneration vessel 4 moves only in the direction of the outlet 36 without being dispersed in the direction of the second dehumidification / regeneration vessel 6. Next, the process proceeds to the step S4 to remove the moisture contained in the fluid supplied into the first dehumidification / regeneration container (4) as described above.

On the other hand, when it is determined in step S12 that the relative humidity input from the first relative humidity sensor 62 to the control means 86 is not greater than or equal to a preset relative humidity set in the control means 86 (NO day). In this case, the second dehumidification / regeneration vessel 6 is sufficiently regenerated so that a part of the fluid passing through the first dehumidification / regeneration vessel 4 does not need to be supplied to the second dehumidification / regeneration vessel 6. Therefore, the flow proceeds to step S29 to block the flow path from the first dehumidification / regeneration vessel 4 toward the second dehumidification / regeneration vessel 6 as described above.

Meanwhile, in the step S20, the control means 86 passes from the external fluid supply means through the first solenoid valve 42 to the second dehumidification / regeneration vessel 6 from the time when the fluid is supplied to the present time. If it is determined that the elapsed time is less than the basic playback time set in advance in the control means 86, the flow proceeds to step S30 (if YES).

In step S30, the control means 86 determines whether the relative humidity input from the second relative humidity sensor 70 to the control means 86 is equal to or greater than a preset relative humidity set in the control means 86. The preset relative humidity set in advance in the control means 86 is, for example, 100%. As a result of this determination, when it is determined from the second relative humidity sensor 70 that the relative humidity input to the control means 86 is equal to or higher than the preset relative humidity set in the control means 86 (if YES) Since the moisture contained in the fluid is so high that the adsorbent 28 in the second dehumidification / regeneration vessel 6 absorbs moisture from the fluid, the flow proceeds to step S31.

In step S31, the sound signal is output from the control means 86 to the speaker 32. Then, a warning sound is generated that the current fluid supply state from the speaker 32 is overloaded. The user then hears the warning sound from the speaker 32 and takes the necessary action.

On the other hand, if it is determined in step S30 that the relative humidity input from the second relative humidity sensor 70 to the control means 86 is not greater than or equal to a preset relative humidity set in the control means 86 (NO day). In the case), the process proceeds to step S14 to continuously remove moisture contained in the fluid supplied into the second dehumidification / regeneration container 6 as described above.

On the other hand, the time elapsed from the time when the fluid is supplied into the second dehumidification / regeneration vessel 6 from the external fluid supply means through the first electromagnetic operation valve 42 in the step S21 is present. If the control means 86 determines that it is not equal to the basic reproduction time set in advance at 86, it proceeds to step S32 (if NO).

In step S32, the control means 86 passes from the external fluid supply means to the second dehumidification / regeneration vessel 6 through the first electronic operation valve 42, and has elapsed from the present time to the present. It is determined whether the control means 86 is larger than the basic reproduction time set in advance.

As a result of this determination, the time elapsed from the time when the fluid is supplied from the external fluid supply means to the second dehumidification / regeneration vessel 6 through the first electromagnetic operation valve 42 is increased to the present time. If it is determined in step 86) that it is greater than the preset basic playback time, the process proceeds to step S33 (if YES).

In step S33, the control means 86 determines whether the relative humidity input from the second relative humidity sensor 70 to the control means 86 is equal to or greater than a preset relative humidity set in the control means 86. As a result of this determination, when it is determined from the second relative humidity sensor 70 that the relative humidity input to the control means 86 is equal to or higher than the preset relative humidity set in the control means 86 (if YES) The flow proceeds to step S23 to change the closed state of the first solenoid valve 42, the second solenoid valve 44, and the third solenoid valve 46 as described above. At the same time, the flow regulating valve 14 is opened as in the initial state. At the same time, the heating state of the first heater 38 and the second heater 40 is changed.

On the other hand, in the step S32, the time elapsed from the time when the fluid is supplied into the second dehumidification / regeneration vessel 6 from the external fluid supply means through the first electromagnetic operation valve 42 is controlled. If it is determined that the means 86 is not larger than the preset default regeneration time, the process proceeds to step S20 (if NO), and the first solenoid valve 42 is removed from the external fluid supply means as described above. It is determined whether the time elapsed from the time when the fluid is supplied into the second dehumidification / regeneration vessel 6 to the present is smaller than the basic regeneration time set in the control means 86.

On the other hand, when it is determined in step S33 that the relative humidity input from the second relative humidity sensor 70 to the control means 86 is not greater than or equal to a preset relative humidity set in the control means 86 (NO day). In this case, the first dehumidification / regeneration vessel 4 is sufficiently regenerated so that a part of the fluid passing through the second dehumidification / regeneration vessel 6 does not need to be supplied to the first dehumidification / regeneration vessel 4. The process proceeds to step S34.

In step S34, the control signal is output from the control means 86 to the eighth switching circuit 130. Then, the eighth switching circuit 130 is turned on. Subsequently, a DC voltage of 12 V is applied from the DC voltage generating means 88 to the flow rate control valve 14 via the eighth switching circuit 130. Then, the flow rate control valve 14 is closed to close the flow path between the second solenoid valve 44 and the orifice 76. Therefore, the fluid dehumidified while passing through the first dehumidification / regeneration vessel 4 moves only in the direction of the outlet 36 without being dispersed in the direction of the second dehumidification / regeneration vessel 6. Next, the process proceeds to step S14 to continuously remove moisture contained in the fluid supplied into the second dehumidification / regeneration container 6 as described above.

On the other hand, when it is determined in step S22 that the relative humidity input from the second relative humidity sensor 70 to the control means 86 is not greater than or equal to a preset relative humidity set in the control means 86 (NO day). In this case, the first dehumidification / regeneration vessel 4 is sufficiently regenerated so that a part of the fluid passing through the second dehumidification / regeneration vessel 6 does not need to be supplied to the first dehumidification / regeneration vessel 4. Therefore, the flow proceeds to step S34 to block the flow path from the second dehumidification / regeneration vessel 6 toward the first dehumidification / regeneration vessel 4 as described above.

On the other hand, if the control means 86 determines that the power supply and operation start switch 24 is in the step S24 (YES), the process proceeds to the step S4 and the external fluid as described above. The fluid supplied from the supply means to the inlet 34 is dehumidified.

In Fig. 5, (c) is a rising curve of the relative humidity of the fluid around the new adsorbent when a new adsorbent is installed in the dehumidification / regeneration vessels 4 and 6, and (c) is a dehumidification / regeneration vessel 4, 6) When the adsorbent used for a long time is installed in the reactor, the relative humidity of the fluid around the adsorbent used for a long time is increased. If a new adsorbent is installed in the dehumidification / regeneration vessels 4 and 6, the adsorbent used for a long time in the time point T4 at which the relative humidity of the fluid reaches 100% and in the dehumidification / regeneration vessel 4 and 6 may be installed. In this case, it can be seen that the time point T3 at which the relative humidity of the fluid reaches 100% is almost identical. Therefore, the dehumidification control device according to the present invention has a very excellent effect of accurately detecting the time point of dehumidification under the influence of the change in the performance of the adsorbent.

In addition, as shown in Fig. 5, since the inclination of the relative humidity curve (C) is large, it is possible to easily and accurately detect the change in the relative humidity. Therefore, by accurately determining the switching time of the dehumidification process and the regeneration process can increase the efficiency of the product, there is a very excellent effect to reduce the dehumidification cost. Further, no heavy burden is placed on the adsorbents in the first dehumidification / regeneration vessel and the second dehumidification / regeneration vessel. Therefore, by extending the life of the adsorbent has a very excellent effect that can improve the durability of the product.

In addition, by configuring the product by the relative humidity sensor which is inexpensive to switch between the dehumidification process and the regeneration process, it is possible to lower the cost of the product and to simplify the composition of the product.

In addition, by displaying the relative humidity, the dehumidification time and the regeneration time of the fluid in the dehumidification / regeneration container on the operation panel, the user can easily and conveniently grasp the dehumidification process and the regeneration process of the fluid.

In addition, if an excessive amount of fluid is supplied for normal dehumidification, an alarm sound is output from the speaker, so that the user can quickly take safety measures.

On the other hand, according to the control method of the dehumidification control device according to the present invention, when the dehumidification capacity of the other dehumidification / regeneration container at the time when the regeneration in one dehumidification / regeneration container has a margin, By discharging the entire dehumidified fluid through the outlet without supplying the dehumidification / regeneration container, there is a very good effect of improving the operating efficiency of the product and reducing the operating cost of the product.

Claims (2)

A dehumidification / regeneration vessel that removes moisture contained in the fluid by the adsorbent and heats the adsorbent to separate the moisture from the adsorbent, and a first electron which opens / closes the fluid supply path to supply fluid into the dehumidification / regeneration vessel. The dehumidification / regeneration vessel by opening / closing the first electronic control valve according to the relative humidity of the operation valve, the relative humidity sensor detecting the relative humidity of the fluid around the adsorbent, and the adsorbent detected by the relative humidity sensor. Control means for controlling the dehumidification time and the regeneration time of the control unit; and display means for receiving the display signal from the control means and displaying the relative humidity of the fluid around the adsorbent detected by the relative humidity sensor. During the dehumidification / regeneration vessel, if the relative humidity of the fluid in the dehumidification / regeneration vessel reaches the set relative humidity within the default regeneration time set by the control means, an alarm indicating that the dehumidification process is continued and an overload is performed. The relative humidity of the fluid in the dehumidification / regeneration vessel is set at the same time as the default regeneration time set in the control means during the dehumidification execution and alarm sound generation step of generating sound and the dehumidification / regeneration process in the dehumidification / regeneration vessel. A dehumidification / regeneration container replacement step of replacing a dehumidification / regeneration container to be dehumidified when the relative humidity is reached; If the relative humidity of the fluid in the dehumidification / regeneration vessel has not reached the set relative humidity while the dehumidification / regeneration vessel has exceeded the default regeneration time set by the control means while executing the dehumidification process, the other dehumidification / regeneration / regeneration is being performed. And a regeneration stop and a dehumidification execution step of continuously executing a dehumidification process in the dehumidification / regeneration vessel which was being dehumidified without supplying dehumidified air to the regeneration vessel.

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