JPH0631131A - Rotary adsorptive dryer - Google Patents

Abstract

PURPOSE:To improve the regeneration efficiency and to continuously use without lowering the dehumidifying performance by installing a cooling zone between a dehumidifying zone and a regeneration zone. CONSTITUTION:Spaces opposite to both ends of an adsorptive rotor 2 in a vessel 22 are divided by a partition to form regeneration zones 8a, 8b and simultaneously to be connected to a cooling passage 25 in the turning direction of the adsorptive rotor 2. By the cooling gas passage 2, cooling gas is conveyed to one cooling zone 24a and is passed through the adsorptive rotor 2 and reaches the other cooling zone 24b. As a result, heat transfer from regeneration parts 8a, 8b of the adsorptive rotor 2 which underwent temperature rise to dehumidifying parts 7a, 7b is prevented to improve the regeneration efficiency without lowering the dehumidifying performance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reproducible rotary adsorption dryer.

[0002]

2. Description of the Related Art Conventionally, a rotary adsorption type dryer 1 shown in FIGS. 5 and 6 is known, and an adsorption rotor 2 is housed in a container 3. The adsorption rotor 2 has a cylindrical shape and is made of a material having a fine fluid flow path in the axial direction, for example, a honeycomb structure material in which silica gel is chemically synthesized with ceramics. Further, the adsorption rotor 2 is supported by a shaft 4 coupled to an output shaft of a motor (not shown) and is rotatable in a direction indicated by an arrow A in FIG. The small circles in FIG. 6 represent the fine fluid flow paths of the adsorption rotor 2. The container 3 has a space having an inner diameter substantially the same as the outer diameter of the adsorption rotor 2, and the adsorption rotor 2 supported by a shaft 4 coupled to an output shaft of a motor (not shown) is rotatably accommodated in the space. There is. Further, in the container 3, the adsorption rotor 2
Partition walls 5, 6 that extend in the radial direction in the space facing both end faces of the
The dehumidifying zones 7a, 7b and the regeneration zones 8a, 8b formed on both sides of the adsorption rotor 2 are formed by partitioning by.

In FIG. 6, the suction rotor 2 shown in FIG.
Only the partition walls 5 and 6 on the right side of the middle are shown, but the suction rotor 2
Similar partition walls 5 and 6 are provided on the left side of FIG. Of these, the regeneration zones 8a and 8b are provided by fan-shaped casings 9a and 9b provided on both sides of the adsorption rotor 2,
Further, it is separated from the dehumidifying zones 7a and 7b. Also,
The container 3 includes a dehumidifying gas channel 10 that communicates with the dehumidifying zones 7a and 7b and a regenerating gas channel 1 that communicates with the regenerating zones 8a and 8b.
It is connected to 1. Then, while rotating the adsorption rotor 2, the dehumidified gas flow path 10 sends the moist gas from the left side in FIG. 5 to the dehumidification zone 7a, and penetrates the adsorption rotor 2 to adsorb the moisture in the gas to the adsorption rotor 2. Then, the dried gas is sent from the dehumidifying zone 7b to the dehumidifying gas passage 10 on the right side in FIG.

On the other hand, a high temperature gas is sent to the regeneration zone 8a from the right side in FIG. 5 through the regeneration gas flow passage 11 to penetrate the adsorption rotor 2. Since this high-temperature gas has a lower vapor partial pressure than the portion of the adsorption rotor 2 containing water, the moisture adsorbed in this portion is released and contained as vapor, and the adsorption rotor 2 is regenerated. After passing through the regeneration zone 8b, it flows out to the regeneration gas channel 11 on the left side in FIG. In addition,
In the regeneration zone 8b, water droplets are discharged to the outside of the container 3 by a drain pipe (not shown). As described above, in the dryer 1, the adsorption rotor 2, which is a dehumidifying agent, is rotated to continuously perform dehumidification and regeneration.

[0005]

SUMMARY OF THE INVENTION The above conventional dryer 1
Since dehumidification and regeneration are performed at the same time, and the higher the regeneration efficiency, the higher the dehumidification performance. Therefore, considering only this point, it is preferable that the temperature of the gas sent from the regeneration gas passage 11 to the dryer 1 is higher. become. On the other hand, in order to improve the dehumidifying performance, it is preferable that the temperature of the adsorption rotor 2 is lower.
However, in this dryer 1, the dehumidification zones 7a, 7a
b and the regeneration zones 8a and 8b are adjacent to each other, when a gas having a higher temperature than the regeneration gas flow path 11 is sent to the adsorption rotor 2, the temperature of the portion of the adsorption rotor 2 facing the dehumidification zones 7a and 7b also rises. , The dehumidification performance is reduced.

Therefore, although a dryer having a natural cooling zone provided between the dehumidifying zones 7a and 7b and the regeneration zones 8a and 8b is also made, this dryer is used for dehumidifying the compressed gas discharged from the compressor. In that case, there is a problem in that the temperature of the portion of the adsorption rotor 2 facing the dehumidification zone cannot be sufficiently lowered by the natural cooling zone. The present invention has been made to solve the problems of the related art, improve the regeneration efficiency without reducing the dehumidification performance,
It is intended to provide a rotary adsorption dryer that can be continuously used.

[0007]

In order to solve the above-mentioned problems, the present invention comprises an adsorption rotor and a container, which has a cylindrical shape and has a large number of fine fluid flow paths in the axial direction. The container is made of material, and the adsorption rotor is rotatably housed in a space having a circular cross section having an inner diameter substantially the same as the outer diameter of the adsorption rotor. Is provided with a dehumidification zone and a regeneration zone formed on both sides of the adsorption rotor, and is connected to a dehumidification gas channel and a regeneration gas channel, and the dehumidification gas channel is one of the dehumidification channels. Wet gas is sent to the zone, the dry gas that has passed through the adsorption rotor from this dehumidification zone and reached the other dehumidification zone is sent out, and the regenerated gas flow channel is a high temperature gas in one regenerated zone. In the rotary adsorption type dryer, which sends out the high temperature gas reaching the dehumidifying zone on the other side through the adsorption rotor from this regeneration zone, the opposite spaces of both end surfaces of the adsorption rotor are Partitioned by a partition wall extending in the radial direction, with respect to the rotation direction of the adsorption rotor, on the entry side of the regeneration zone,
While forming a cooling zone, it is connected to a cooling gas flow path, this cooling gas flow path sends the cooling gas to one of the cooling zones, penetrates the adsorption rotor from this cooling zone, and the other cooling zone of the other. The cooling gas that has reached the temperature is sent out.

[0008]

With the configuration as described above, it is possible to prevent heat from being transferred from the heated regenerating portion of the adsorption rotor to the dehumidifying portion.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show a rotary suction dryer 21 according to the present invention, and portions common to the dryer 1 shown in FIGS. 5 and 6 are given the same reference numerals and description thereof is omitted. In this embodiment, the space in the container 22 facing both end surfaces of the adsorption rotor 2 is provided in addition to the partition walls 5 and 6 similar to the above.
The adsorbing rotor 2 is partitioned by a partition wall 23 provided on the entry side with respect to the rotation direction, and the dehumidifying zones 7 are provided on both sides of the adsorbing rotor 2.
a, 7b, regeneration zones 8a, 8b, and cooling zone 2
4a and 24b are formed. In FIG. 2, only the partition wall 23 on the right side of the adsorption rotor 2 is shown in FIG. 2, but the same partition wall 23 is provided on the left side of FIG. 1 as compared with the partition walls 5 and 6. It is the same.

In FIG. 3, for the sake of clarity, only the cooling zones 24a and 24b are shown by chain double-dashed lines for the sake of convenience. In addition, in FIG.
The a and 8b and the cooling zones 24a and 24b do not always appear so as to be clearly distinguished from each other, but both of them partially overlap. Further, the container 22 includes a cooling zone 24a,
It is connected to a cooling gas passage 25 leading to 24b. Then, in the dryer 21 having the above-described configuration, the cooling gas is sent from the right side in FIG. 1 to the cooling zone 24a to penetrate the rotating adsorption rotor 2, and from the cooling zone 24b,
It is formed so as to be sent out to the cooling gas passage 25 on the left side in FIG. In this way, the cooling gas is cooled by the cooling zone 2
The portion of the adsorption rotor 2 facing 4a is cooled to prevent heat from being transferred from the heated regenerating portion of the adsorption rotor 2 to the dehumidification side of the adsorption rotor 2. As a result, the regeneration efficiency is improved without lowering the dehumidification performance of the adsorption rotor 2,
It can be used continuously.

Next, FIG. 4 shows a compressor which is an example of a specific application of the dryer 21. This compressor includes a suction silencer 33, a suction filter 34, an intake control valve 35 in a suction passage 32 of a compressor body 31, and a discharge silencer 37, a first check valve 38, a rear cooler in a discharge passage 36. 39, 1st drain separator 40, 1st injector 41, 2nd injector 4
2, a dryer 21, and a second check valve 43. Here, the discharge flow path 36 is adapted to pass through the dehumidifying zone 7a, the adsorption roller 2 and the dehumidifying zone 7b in the dryer 21, and is also a dehumidifying gas flow path. Further, the discharge flow path 36 is branched between the first check valve 38 and the rear cooler 39, and the first flow control valve 44, the regeneration zone 8a of the dryer 21, the adsorption roller 2, the regeneration zone 8b, After passing through the bypass cooler 45 and the second drain separator 46,
A regeneration gas flow channel 47 is provided that joins the discharge flow channel 36 at the first injector 41.

Furthermore, the discharge flow path 36 between the first drain separator 40 and the first injector 41 is branched,
After passing through the cooling zone 24a of the dryer 21, the suction roller 2, the cooling zone 24b, and the second flow rate control valve 48, the second
A cooling gas passage 43 is provided which joins the discharge passage 36 with the injector 42. In addition, in FIG. 4, the mark indicates that the same numbers are continuous with each other. Then, the air sucked into the compressor body 31 from the suction flow passage 32 via the suction silencer 33, the suction filter 34, and the intake control valve 35 is compressed and discharged from the compressor body 31, and the compressed air is discharged and silenced. It is led to the rear cooler 39 via the device 37 and the first check valve 38. The compressed air is cooled by the rear cooler 39, and the moisture in the compressed air is supersaturated by the rear cooler 39, and drain water is generated. The drain water is separated from the compressed air by the first drain separator 40 and discharged to the outside of the machine.

The compressed air that has passed through the rear cooler 39 and the first drain separator 40 is not completely dewatered, so that the compressed air is further passed through the first injector 4.
After passing through the dehumidifying part of the dryer 21 through the first and second injectors 42, and after dehumidifying here, the dryer 21 is dried and sent to the user side via the second check valve 50. On the other hand, after the high temperature compressed air branched from the discharge flow path 36 by the regeneration gas flow path 47 is passed through the first flow rate control valve 44, the adsorption roller 2 is heated through the regeneration part of the dryer 21, This is reproduced. Further, the high-temperature compressed air containing moisture that has exited from the dryer 21 is cooled by the bypass cooler 45, and the drain water generated there
The drain separator 46 discharges the compressed air to the outside of the machine and sends the compressed air to the discharge passage 36 via the first injector 41. In addition, in the first injector 41, a portion which constitutes a part of the discharge flow passage 36 inside is an orifice, and at this portion, the flow velocity of the compressed air in the discharge flow passage 36 is increased to reduce the pressure. The compressed air from the regeneration gas flow path 47 is drawn in by.

Further, after the cooled compressed air branched from the discharge passage 36 by the cooling gas passage 43 is passed through the second flow rate adjusting valve 48, the dehumidifying of the adsorption roller 2 is performed through the cooling portion of the dryer 21. The cooling section between the regenerating section and the regenerating section is cooled to prevent heat of the regenerating section from being transferred to the dehumidifying section. Then, this compressed air for cooling is sent into the discharge flow path 36 via the second injector 42. This second
The injector 42 has the same function as the first injector 41.

In the compressor, by applying the dryer 21 as described above, the compression heat of the compressed air discharged from the compressor body 31 and the rear cooler 3 are used.
9. The cold heat of the compressed air discharged from the drain drain separator 40 is effectively used to improve the regeneration efficiency without lowering the dehumidification performance of the dryer 21, and the dryer 21 is continuously used. As shown in FIG. 4, the dryer 21 is applied not only to a compressor having a single compressor main body 31 but also to a multi-stage compressor having two or more compressor main bodies arranged in series. To be done.

[0016]

As is apparent from the above description, according to the present invention, the adsorption rotor and the container are provided, and the adsorption rotor has a cylindrical shape and has a large number of fine fluid flow paths in the axial direction. The container comprises the adsorption rotor rotatably housed in a space having a circular cross section having an inner diameter substantially the same as the outer diameter of the adsorption rotor, and a space facing both end surfaces of the adsorption rotor is arranged in a radial direction. Partitioned by an extended partition wall, the dehumidification zone and the regeneration zone formed on both sides of the adsorption rotor are provided, and the dehumidification gas channel and the regeneration gas channel are connected, and the dehumidification gas channel is one of the dehumidification zones. Wet gas is sent to, through the adsorption rotor from this dehumidification zone, the dry gas that has reached the other dehumidification zone is sent out, and the regenerated gas flow path supplies high temperature gas to one of the regenerated zones. In the rotary adsorption type dryer, which sends out the high temperature gas reaching the other dehumidifying zone from the regeneration zone through the adsorption rotor, the opposite spaces of both end surfaces of the adsorption rotor are set in the container. Is partitioned by a partition wall extending in the radial direction to the entrance side of the regeneration zone with respect to the rotation direction of the adsorption rotor,
While forming a cooling zone, it is connected to a cooling gas flow path, this cooling gas flow path sends the cooling gas to one of the cooling zones, penetrates the adsorption rotor from this cooling zone, and the other cooling zone of the other. It is configured to send out the cooling gas that has reached.

Therefore, it is possible to prevent heat from being transferred from the heated regenerating portion of the adsorption rotor to the dehumidifying portion, improving the regenerating efficiency without lowering the dehumidifying performance,
The effect is that it can be used continuously.

[Brief description of drawings]

FIG. 1 is a plan view of a dryer according to the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a perspective view showing a suction roller portion of the dryer shown in FIG.

4 is an overall configuration diagram of a compressor which is an application example of the dryer shown in FIG.

FIG. 5 is a plan view of a conventional dryer.

6 is a sectional view taken along line VV of FIG.

[Explanation of symbols]

2 Adsorption rotors 5, 6 Partition walls 7a, 7b Dehumidification zone 8
a, 8b Regeneration zone 10 Dehumidification gas flow channel 11 Regeneration gas flow channel 21 Dryer 22 Container 23 Partition wall 25 Cooling gas flow channel

Claims (1)

[Claims] 1. An adsorption rotor and a container are provided, the adsorption rotor is made of a material having a cylindrical shape and having a number of fine fluid flow paths in the axial direction, and the container has an outer diameter substantially equal to that of the adsorption rotor. The adsorption rotor was rotatably housed in a space having a circular cross section with the same inner diameter, and the space facing both end surfaces of the adsorption rotor was partitioned by radially extending partition walls to form on both sides of the adsorption rotor. A dehumidification zone and a regeneration zone are provided, and the dehumidification gas channel and the regeneration gas channel are connected to each other, and the dehumidification gas channel sends the moist gas to one of the dehumidification zones and penetrates the adsorption rotor from the dehumidification zone. Then, the dry gas that has reached the other dehumidifying zone is sent out, and the regeneration gas flow path sends the high temperature gas to one of the regeneration zones, and penetrates the adsorption rotor from this regeneration zone. In the rotary adsorption dryer for delivering the high temperature gas reaching the other dehumidification zone, the opposite spaces of both end faces of the adsorption rotor are partitioned by partition walls extending in the container in the radial direction, and the adsorption is performed. With respect to the rotation direction of the rotor, on the entry side of the regeneration zone,
While forming a cooling zone, it is connected to a cooling gas flow path, this cooling gas flow path sends the cooling gas to one of the cooling zones, penetrates the adsorption rotor from this cooling zone, and the other cooling zone of the other. The rotary adsorption dryer is characterized in that the cooling gas that has reached the temperature is sent out.