JP2805138B2 - Compressed air dehumidifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing moisture and moisture contained in compressed air (high-pressure air) and drying the compressed air. In particular, it is useful as an air source for pneumatic equipment as a device for removing compressed air.

[0002]

2. Description of the Related Art Conventionally, compressed air is cooled using a refrigerant such as Freon gas, and water vapor in the compressed air is condensed and removed.
A dehumidifier that discharges as dry compressed air is known, but there is a problem in terms of pollution because it uses Freon gas.In addition, compressors and condensers that cool the refrigerant of Freon gas, heat exchangers that cool compressed air, etc. A device was required, and it was expensive and large. Furthermore, since this dehumidifier is operated by electricity, the running cost is also high. For this reason, this dehumidifier is installed at a position close to the compressor that sends out compressed air for economic reasons. There is a problem that the dry compressed air passing through the air pipe becomes wet again due to the generation or dew condensation or the outside air entering from the joint of the air pipe. As another dehumidifying device, there is known a device that removes moisture and dust in compressed air by passing compressed air through a filter provided in the device.
However, if the filter becomes very wet, there is a problem that the moisture adhering to the filter together with the compressed air passing through the filter is pushed out to the back surface of the filter, and the dehumidified compressed air becomes wet again. If the filter becomes saturated with moisture, it becomes more noticeable and the dehumidifying effect is reduced, so that the cleaning power cannot be maintained unless the filter is periodically cleaned and replaced, which requires labor and labor for maintenance. There was a problem.

[0003]

SUMMARY OF THE INVENTION The problem to be solved by the present invention is to solve these conventional problems and maintain an extremely high dehumidifying effect without requiring maintenance.
It is an object of the present invention to provide a compressed air dehumidifier which is small, inexpensive, requires no running cost, can be easily attached to an air pipe near an air device for supplying dry compressed air, and has excellent durability.

[0004]

Means for Solving the Problems The constitution of the present invention which has solved the above problems is as follows: 1) An introduction passage for introducing compressed air into the inside of the cylindrical body is provided at the lower part of the side surface of a vertical cylindrical body having a hollow chamber. A turning path for discharging compressed air at an upper portion of the cylindrical body, the turning section turning the compressed air blown out from the opening of the introduction path at a collision surface close to the opening at a right angle or an angle close to a right angle. A guide portion for flowing the compressed air diverted by the diverting portion along the circumferential direction of the inner surface of the cylindrical body to open the hollow chamber of the cylindrical body, and a drain communicating with the hollow chamber. A tank is provided below the cylindrical body, and a receiving plate having a substantially conical opening at the center and having a ventilation hole is provided at the upper part of the hollow chamber to partition the hollow chamber vertically, and the upper part is partitioned by the receiving plate. Is connected to the discharge passage , and the compressed air in the introduction passage is
Collision of a turning part almost parallel to the opening that blows out toward the center of the vacancy
The compressed air is turned at right angles to
Arc-shaped guy that sends compressed air along the inner surface of the cylinder
A compressed air dehumidifying device, wherein the opening portion is provided continuously with the diverting portion. 2) The compressed air dehumidifying device according to 1), wherein the opening area of the introduction path is narrowed narrowly. 3) Ventilation of a receiving plate. A horizontal plate slightly wider than the opening area of the mouth is opposed to the upper side of the vent with a space therebetween, and a passage for passing compressed air is formed between the peripheral end of the horizontal plate and the inner surface of the hollow chamber. Or 2) The dehumidifier for compressed air described in 4) 4) Up and down the upper hollow chamber partitioned by the receiving plate with a baffle plate having a large number of air holes formed in a plane portion outside the surface facing the ventilation port of the receiving plate. The compressed air dehumidifier according to the above 1) or 2) 5) A pressure is applied to the lower part of the side of a vertical cylindrical body having a hollow space inside.
Providing an introduction path for introducing compressed air into the cylindrical body,
A discharge path for discharging compressed air is provided at the top of the cylindrical body,
The compressed air blown out from the opening of the introduction path was brought close to the opening.
A turning part is provided at the collision surface, which turns at a right angle or near a right angle.
The compressed air diverted by the diverting portion to the inner surface of the cylindrical body.
Flow along the circumferential direction of the cylinder to open it into the hollow chamber of the cylindrical body.
A drain tank communicating with the hollow chamber.
Is provided below the cylindrical body and has a substantially conical shape with an open center.
A receiving plate having a ventilation hole formed at the top of the hollow chamber
Partition to check up and down in serial, hollow upper partitioned by the receiving plate
The chamber is connected to the discharge path, and the opening area of the vent of the receiving plate is
A slightly wide horizontal plate is placed above the ventilation holes with a space between them.
Compressed air between the peripheral edge of the horizontal plate and the inner surface of the hollow chamber.
The compressed air dehumidifier has a passage formed therein .

[0005] The compressed air blown out from the opening of the introduction path is
It is not limited to blowing out toward the center of the hollow chamber, but may blow out in a direction shifted from the center of the hollow chamber. The collision surface desirably faces the compressed air blown out from the opening of the introduction path at a right angle. However, the compressed air may collide with the collision surface facing the angle slightly deviated from the right angle. The distance between the opening surface of the introduction path and the collision surface is desirably 6 mm, but this distance varies in the range of 3 to 15 mm depending on the speed of the compressed air. In order to increase the blowing speed of the compressed air blown out from the introduction path, there are cases where the opening area of the introduction path is narrowed down, and cases where the diameter of the introduction path is reduced and the blowing speed of the compressed air passing through the introduction path is increased. In some cases, the diameter of an air pipe that sends compressed air supplied to the introduction path is reduced to increase the speed of the compressed air supplied to the introduction path to increase the blowing speed .

[0006]

According to the present invention, the compressed air introduced into the hollow chamber through the introduction path violently collides with the collision surface of the diverting portion and is deflected to a right angle or an angle close to a right angle. When abruptly changing direction with this small radius of curvature, the moisture and moisture contained in the compressed air become droplets. Deflected and separated moisture and air
The guide flows along the circumferential direction of the inner surface of the cylindrical body and is opened to the hollow chamber. For this reason, while the compressed air continues to rotate in the circumferential direction as it is along the inner surface of the cylinder, water having a large specific gravity is separated from the air by centrifugal force, and the separated droplets fall below the hollow chamber and fall into the drain The air rises as it is drawn from the center, and the air and moisture are separated. The water that has fallen below the hollow chamber falls into the drain as it is, but the water that has adhered to the inner surface of the hollow chamber flows down along the inner peripheral surface of the cylindrical body as a liquid flow and flows into the drain. The compressed air that rises around the hollow chamber rises vertically through a vent formed in the center of the receiving plate and is discharged through a discharge passage. Therefore, even if the water is lifted without dropping due to the flow velocity of the air, the water flowing near the inner surface of the cylindrical body due to the centrifugal force and its own weight cannot pass through the vent formed in the center of the receiving plate. And flows down along the inclined surface of the receiving plate as a liquid flow, and falls downward. The compressed air sufficiently dehumidified in this way is discharged as dry compressed air. As described in claim 2,
The blowing speed can be increased by narrowing the opening area of the introduction path to a small extent, and the compressed air can be violently collided with the collision surface to change the compressed air at a high speed to efficiently separate moisture from the air. If the horizontal plate or the baffle plate is opposed to the upper side of the ventilation hole as described in claim 3, the compressed air rising through the ventilation hole is between the horizontal plate and the inner surface of the cylinder or As it rises through the air hole of the baffle plate and is discharged from the discharge path, even if moisture is mixed in the compressed air, the moisture adheres to this horizontal plate or baffle plate and removes moisture from the compressed air I can do it. The moisture attached to the horizontal plate or the baffle plate falls downward through the vent and is sent to the drain.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a partially cut-out state of the embodiment, and FIG.
FIG. 3 is a plan view of the present embodiment, FIG. 3 is a sectional view taken along line AA in FIG.
4 is a cross-sectional view taken along the line BB in FIG. 2, FIG. 5 is a cross-sectional view taken along the line CC in FIG. 1, FIG.
Is an explanatory diagram showing the dehumidification situation in the present embodiment, FIG. 8 is an explanatory diagram showing an experiment performed using the dehumidifier of the present embodiment, FIG. 9 is a graph showing the experimental result, and FIG. 10 is another example. FIG.

In the figure, 1 is a dehumidifier, 2 is metal and has a diameter of 1
A hollow cylinder having a height of about 230 mm, a thickness of about 230 mm, a wall thickness of about 3 mm, and an arc-shaped bottom wall, and 3 is for introducing compressed air provided at the lower part of the side wall of the cylinder 2 into the cylinder 2. Reference numeral 4 denotes a narrowed portion obtained by narrowing the introduction path 3 on the inner side of the cylindrical body 2 to a diameter of about 8 mm, 5 denotes a compressed air discharge path provided at the center of the ceiling wall of the cylindrical body 2, and 6 denotes a bottom wall of the cylindrical body 2. , A drain attached to the bottom wall of the cylindrical body 2 and communicating with the drain 6, a hollow 8 formed inside the cylindrical body 2, and a compressed air 9 introduced therein 7 is turned in the clockwise circumferential direction of the inner surface of the hollow chamber 8 in the drawing of FIG. 7, and 10 is approximately 6 m from the end face of the introduction passage 3 inside the cylindrical body 2.
A collision surface 11 of a diverter disposed so as to be at a distance of about m and perpendicular to the introduction path 3, and a compressed air 20 diverted by a collision surface 10 of the diverter 9 integrated with the diverter 9. An arc-shaped guide portion guided along the inner surface of the hollow chamber 8, 12 is an outlet of the guide portion 11, and 13 is approximately 22 mm from the ceiling surface of the hollow chamber 8.
A baffle plate about the inner diameter of the cylindrical body 2 mounted horizontally inside the cylindrical body 2 distant from, a closed surface 14 having a diameter of about 26 mm formed at the center of the baffle plate 13, and a closed surface 1 of the baffle plate 13
24 air holes radially opened from 4 and having a diameter of about 5 mm; 17 is an inverted conical shape attached to the outer peripheral edge of the lower surface of the baffle plate 13; , 18 are vents of the receiving plate 17, 19 is an extending portion of the receiving plate 17 at the periphery of the vent 18 extending downward, 20.
Is compressed air, 21 is water, 22 is dry compressed air, 23 is an air pipe, 25 is blue colored water, 26 is a tank containing the water 25, 27 is a compressor, 28 is an air spray gun, and 29 is a hose. , 30 is white paper.

In this embodiment shown in FIGS. 1 to 9, the dehumidifier 1 of this embodiment is connected to the middle of an air pipe 23 near an air device for supplying dry compressed air 22, and compressed air passing through the air pipe 23. 20 is supplied to the pneumatic equipment via the dehumidifier 1. When the compressed air 20 passes through the introduction path 3 of the dehumidifier 1, the compressed air 20 passes through the throttle section 4 in which the diameter of the introduction path 3 is reduced to 8 mm in the middle of the introduction path 3. Since the collision surface 10 of the diverter 9 is opposed to the introduction path 3 at a right angle and the distance between them is narrow as 6 mm, the compressed air 20 collides with the collision surface 10 of the diverter 9 at high speed. The compressed air 20 diverted at a right angle and diverted all flows in the circumferential direction along the inner surface of the cylindrical body 2 by the guide portion 11, and is hollowed out from the outlet 12 provided near the inner surface of the cylindrical body 2. The compressed air 20 blown out into the chamber 8 is
The water 21 rises while continuing to rotate in the circumferential direction along the inner surface of the cylindrical body 2, and the water 21 falls below the hollow chamber 8 by its own weight and centrifugal force, flows into the auto drain 7 through the drainage channel 6, and flows through the compressed air 20. From the water 21. The water 21 that has fallen below the hollow chamber 8 falls into the auto drain 7 as it is, but the water 21 that has adhered to the inner surface of the hollow chamber 8 flows downward as a liquid flow and is sent to the auto drain 7. The water 21 attached to the receiving plate 17 is collected in the central vent 18 and falls because the receiving plate 17 has an inverted conical shape.
Further, the water 21 collected in the vent 18 is prevented from entering the upper hollow chamber 8 through the vent 18 by the extension 19 of the receiving plate 17. The compressed air 20 which rises while rotating around the hollow chamber 8 rises vertically through an air passage 18 formed in the center of the receiving plate 17, and is blown out from the discharge passage 5 through an air hole 15 of the baffle plate 13. . For this reason, even when the water 21 is lifted without falling due to the flow velocity of the compressed air 20, the water 2 flowing near the inner surface of the cylindrical body 2 due to centrifugal force and own weight.
1 cannot adhere through the vent hole 18 formed in the center of the receiving plate 17 and adheres to the receiving plate 17 to form a liquid flow in the same manner as described above.
Flows down along the inclined surface and falls downward. Thus, it rises vertically through the vent 18. The sufficiently dehumidified compressed air 20 collides with the closing surface 14 of the baffle plate 13 and rises through the air holes 15 formed around the closing surface 14, and is discharged from the discharge passage 5 to the outside of the hollow chamber 8. Therefore, if moisture remains in the compressed air 20, the water 21 adheres to the colliding closing surface 14, so that further dehumidification can be performed, and the compressed air 2 that has been further dehumidified
0 is discharged as dry compressed air 22 from the discharge path 5 through the air hole 15 of the baffle plate 13 and supplied to the pneumatic equipment.
Water 21 adhering to the baffle plate 13 such as the closing surface 14 falls to the lower receiving plate 17, and the inverted conical receiving plate 17 collects moisture in the central vent 18, and the lower water passes through the vent passage 18. It falls to the auto drain 7. The water 21 collected in the auto drain is automatically drained from the auto drain 7 to the outside without human intervention if the water level exceeds a certain level, so that the compressed air 20 can be continuously dehumidified.

As shown in FIG. 8, the following experiment is performed using the dehumidifier 1 of this embodiment. 100 cc of water 2 colored blue in the middle of the air pipe 23 connected to the introduction path 3 of the dehumidifier 1
5 is connected, and 10 cc of water 25 per minute is sprayed from this tank into the air pipe 23 continuously, and is sent out into the air pipe by the compressor 27 at a flow rate of 300 l / min. Moisture is contained in the compressed air 20, the wet compressed air 20 is sent into the dehumidifier 1 from the introduction path 3, and the dry compressed air 22 discharged from the discharge path 5 of the dehumidifier 1 is sprayed through a hose 29 through an air spray. The dry compressed air 22 is supplied to a white paper 30 from the air spray gun 28. As a result of this experiment, the white paper 30 did not stain blue and the auto drain 7
Blue water 25 collected in the area reached nearly 100 cc, 98
A water removal rate of ~ 99% was achieved. As a result of performing the same experiment as above by changing the flow rate (liter / minute) of the compressed air, a result of an extremely high water removal rate as shown in FIG. 9 was obtained.

An example of another dehumidifying device (see FIG. 10) 32 is a horizontal plate, and 33 is a support bar for horizontally supporting the horizontal plate 32. In another dehumidifier shown in FIG. 10, a horizontal plate 3 used in place of the baffle plate 13 in the dehumidifier of the present embodiment is used.
This is an example in which a support bar 33 is provided above the ventilation port 18 of the receiving plate 17 so as to face the support plate 33. Other symbols, configurations, and operational effects are the same as those of the above-described embodiment.

[0012]

As described above, according to the present invention, it is possible to remove about 99% of water and moisture in the compressed air and to obtain an extremely high dehumidifying effect while having a very simple structure without any driving mechanism. Was. Since the structure is simple and no drive source is required, miniaturization can be achieved, manufacturing costs can be extremely low, running costs are unnecessary, and maintenance is not required because there are no consumables, so an extremely high dehumidifying effect can be maintained. , With no failure and very high durability. If the opening area of the introduction path is narrowed as described in claim 2, the collision force of the compressed air colliding with the collision surface can be easily increased, and the water separation efficiency can be increased. If the horizontal plate and the baffle plate are provided above the ventilation hole of the receiving plate as opposed to the third and fourth aspects, the water droplets are mixed in the compressed air passing through the ventilation hole. The water hits the horizontal plate or baffle plate and adheres, and drops by the weight of the attached water to the drain through the ventilation hole of the receiving plate, so that the separated water is reliably removed and discharged from the discharge passage. The removal rate of the moisture of the compressed air is further improved.

[Brief description of the drawings]

FIG. 1 is a front view of this embodiment in a partially cut-away state.

FIG. 2 is a plan view in the present embodiment.

FIG. 3 is a sectional view taken along line AA in FIG. 1;

FIG. 4 is a sectional view taken along line BB in FIG. 2;

FIG. 5 is a sectional view taken along the line CC in FIG. 1;

FIG. 6 is an explanatory diagram showing a dehumidification situation in the present embodiment.

FIG. 7 is an explanatory diagram showing a dehumidification situation in the present embodiment.

FIG. 8 is an explanatory diagram showing an experiment performed using the dehumidifier of the present embodiment.

FIG. 9 is a graph showing experimental results.

FIG. 10 is an explanatory diagram showing another example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dehumidifier 2 Cylindrical body 3 Introductory path 4 Restriction part 5 Drainage path 6 Drainage path 7 Auto drain 8 Hollow chamber 9 Deflector 10 Collision surface 11 Guide part 12 Outlet 13 Baffle plate 14 Closing surface 15 Air hole 16 Missing number 17 Reception Plate 18 Ventilation path 19 Extension section 20 Compressed air 21 Water 22 Dry compressed air 23 Air tube 24 Missing number 25 Water 26 Tank 27 Compressor 28 Air spray gun 29 Hose 30 White paper 31 Missing number 32 Horizontal plate 33 Support rod

Claims (5)

(57) [Claims] 1. A side surface of a vertical cylindrical body having a hollow chamber inside.
The introduction path for introducing compressed air at the bottom inside of the cylinder body is provided, a discharge path is provided for discharging the compressed air to the upper portion of the cylindrical body, adjacent the compressed air blown from the opening of the introduction path to the opening A deflecting portion is provided that is deflected at a right angle or near a right angle at the collision surface, and the compressed air deflected by the deflecting portion is caused to flow along the circumferential direction of the inner surface of the cylindrical body, thereby hollowing the cylindrical body. A guide portion that opens to the chamber is provided, a drain tank communicating with the hollow chamber is provided below the cylindrical body, and a receiving plate having a substantially conical opening at the center and having a ventilation hole is provided at an upper portion of the hollow chamber. To separate the hollow chamber up and down, connect the upper hollow chamber partitioned by the receiving plate to the discharge path, and compress the introduction path.
Deflected almost parallel to the opening that blows air toward the center of the hollow chamber
Compressed air is turned at right angles with the collision surfaces of
To send the deflected compressed air along the inner surface of the cylinder
A compressed air dehumidifier , wherein an arc-shaped guide portion is provided continuously with the turning portion . 2. The method according to claim 1, wherein the opening area of the introduction path is narrowed.
A compressed air dehumidifier according to any of the preceding claims. 3. A horizontal plate slightly larger than the opening area of the ventilation hole of the receiving plate is opposed to the ventilation plate at an interval above the ventilation hole, and compressed air is supplied between the peripheral end of the horizontal plate and the inner surface of the hollow chamber. The compressed air dehumidifier according to claim 1 or 2, wherein a passage for passing the compressed air is formed. 4. An upper hollow chamber partitioned by a receiving plate by means of a baffle plate having a large number of air holes formed in a flat portion outside a surface of the receiving plate facing the ventilation port. A compressed air dehumidifier according to any of the preceding claims. 5. A side surface of a vertical cylindrical body having a hollow chamber inside.
An introduction passage for introducing compressed air into the cylindrical body is provided at a lower portion.
A discharge passage for discharging compressed air is provided above the cylindrical body.
The compressed air blown out from the opening of the introduction path is supplied to the opening.
Deflection that turns at a right angle or near a right angle at a close collision surface
Directional part, and the compressed air diverted in the diverting part
A hollow chamber of said cylindrical body flowing along the circumferential direction of the inner surface of the body
A guide part that opens to the inside, and a drain that communicates with the hollow chamber.
An in-tank is provided below the cylindrical body and has a substantially conical shape
A receiving plate having an opening and a vent formed on the upper portion of the hollow chamber
Provided to partition the hollow chamber up and down,
One of the hollow chambers is connected to the discharge path, and the opening of the vent of the receiving plate is opened.
A horizontal plate slightly larger than the area is spaced above the vent.
Between the peripheral edge of the horizontal plate and the inner surface of the hollow chamber.
A compressed air dehumidifier having a passage for passing compressed air.