JPH11236877A - Air compression device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To feed water drips generated resultant from vapor condensation in an air tank together with compressed air from an air tank to a dehumidifier and to discharge it in one lot by the dehumidifier by a method wherein the air tank and the dehumidifier are intercommunicated through an air feed piping one end on the air tank side of which is released in the vicinity of the inner bottom of an air tank. SOLUTION: Compressed air generated by an air compressor 11 is stored in an air tank 13, and after compressed air stored in the air tank 13 is dehumidified by a dehumidifier 30, the compressed air is supplied to various pneumatic machines. In a so formed air compression device, an air feed piping 16 to intercommunicate an air tank 13 and the dehumidifier 30 is passed through a through-port 13a formed in the upper part of the air tank 13. One end on the air tank 13 side of the air feed piping 16 is disposed in a state to be released in the vicinity of the inner bottom of the air tank 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air compressor, and more particularly, supplies water generated by condensation in an air tank to a dehumidifier together with compressed air stored in the air tank. The present invention relates to an air compressor configured as described above.

[0002]

2. Description of the Related Art As a conventional air compressor, FIG.
However, there is an air compressor as shown in FIG.

Here, as shown in FIG. 3, reference numeral 10 denotes an air compressor, which takes in air from an air inlet (not shown) and rotates a motor 12 through an air compressor 11 through a belt device 14. The compressed air generated by the air compressor 11 is stored in the air tank 13 via the discharge pipe 15, and the stored compressed air is supplied to the dehumidifier 30 via the air supply pipe 23. It has a configuration.

However, compressed air can be sent from the air tank 13 to the air supply pipe B 17 as another route. The air supply pipe 2
In the middle of 3, a manual valve 18 and a manual valve 19 at the end of the air supply pipe 17 are provided.

On the other hand, a drain D1 in which water generated due to dew condensation in the air tank 13 accumulates at the bottom is disposed in the middle or at the end of a drain pipe 21 connected to a drain outlet 13b at the bottom of the air tank 13. The automatic drain trap 22 discharges the air at regular intervals. In this case, it is conceivable that the drain D1 is discharged by the automatic drain trap 22 when the drain D1 accumulates in a certain amount.

[0006]

However, such a conventional air compressor has the following problems. First, the drain D generated in the air tank 13
1 and the drain generated in the dehumidifier 30 were separately discharged, so that the automatic drain trap 22 for discharging the drain,
32 were required at two places, and the manufacturing cost of the apparatus was generally high.

Second, in order to separately supply compressed air from the air tank 13 and discharge the drain D1, in order to discharge the drain D1 collected at the bottom of the air tank 13,
It is necessary to machine a drain outlet 13b at the bottom of the air tank 13 and install a drain pipe 21 and an automatic drain trap 22. Further, in combination with an air supply pipe D 23 for supplying compressed air, the manufacturing of the apparatus is performed. The cost was generally high.

Third, the installation of the drain pipe 21 and the automatic drain trap 22 below the air tank 13 is a hindrance because the space between the bottom of the air tank 13 and the ground is narrow. An object of the present invention is to solve such a problem.

[0009]

SUMMARY OF THE INVENTION The present invention provides an air compressor 1;
1 is stored in an air tank 13 and the compressed air stored in the air tank 13 is dehumidified by a dehumidifier 30 and then supplied to various pneumatic machines. An air supply pipe a 16 communicating with the dehumidifier 30 is penetrated through a through hole 13 a above the air tank 13, and one end of the air supply pipe a 16 on the side of the air tank 13 is connected to the inside of the air tank 13. Characterized in that it is disposed close to and open to the bottom of the air supply pipe.
6 is characterized in that a check valve 20 is provided, and that one end of the air supply pipe A 16 on the side approaching the bottom inside the air tank 13 is cut obliquely. In addition, the above-mentioned problem is caused by that one end of the air supply pipe a 16 on the side approaching the bottom inside the air tank 13 is brought into contact with the bottom inside the air tank 13. Has been resolved.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An air compressor according to the present invention will be described in detail with reference to the drawings and embodiments. FIG. 1 is a diagram showing the entire air compressor according to the present invention, and FIG.
FIG. 2 is a detailed view showing an air tank side end of an air supply pipe a of the air compression device according to the present invention.

In FIG. 1, reference numeral 10 denotes an air compressor, which takes in air from an air inlet (not shown), and rotates a motor 12 through a belt device 14.
1, the compressed air generated by the air compressor 11 is stored in the air tank 13 via the discharge pipe 15, and the compressed air stored in the air tank 13 is condensed with the stored compressed air from one end of the air supply pipe A 16. Then, the generated water sucks together the drain D1 accumulated at the bottom and supplies the same to the dehumidifier 30 via the same air supply pipe A16.

In this case, the air supply pipe 16 protrudes from the inside at the through hole 13a above the air tank 13, and is sealed so that the compressed air in the air tank 13 does not leak from around the through hole 13a of the air tank 13. One end on the bottom side of the air tank 13 is opened near the bottom of the air tank 13 so that the drain D1 in the air tank 13 can be easily sucked.

A manual valve A 18 and a check valve 20 are arranged in the order described in the middle of the air supply pipe A 16 from the air tank 13 side. However, the order may be reversed.

Further, as shown in FIG. 2, the air supply pipe A is formed by cutting one end on the side approaching the bottom inside the air tank 13 by 5 to 60 degrees with respect to the horizontal. When the air supply pipe A 16 is attached to the air tank 13, even if the inside of the air tank 13 cannot be seen from the outside, it is possible to attach the air supply pipe A 16 in a state where the air supply pipe A is in contact with the bottom of the air tank 13. Thus, a gap can be reliably ensured between the air supply pipe A 16 and the bottom of the air tank 13.

As a method of sealing between the air supply pipe A 16 and the through hole 13a of the air tank 13, even if the air tank 13 and the air supply pipe A 16 are welded, packing or O-ring ..., etc., may be provided. Further, a method of fixing with a screw is also conceivable.

On the other hand, the air supply pipe 16 is provided with a dehumidifier 30.
Connected to The dehumidifier 30 includes a refrigeration type, a filter type, a desiccant, and the like. Of the compressed air sent from the air tank 13 and the drain D1,
The drain D1 and the drain generated in the dehumidifier 30 are put together, and the auto drain trap 3 disposed in the middle or at the end of the drain pipe 33 communicating with the dehumidifier main body 31.
It is discharged outside from 2.

Note that compressed air can be sent from the air tank 13 to the air supply pipe B 17 as another route.

The air compressor according to the present invention is configured as described above, and its operation will be described below.

First, when the motor 12 starts rotating, the air compressor 11 is operated via the belt device 14 and compressed air is stored in the air tank 13 via the discharge pipe 15 until a constant pressure is reached. The motor 12 stops.

The compressed air stored in the air tank 13 passes through the air supply pipe a 16, the dehumidifier 30, and the air supply pipe c, and is supplied to various types of air cylinders, air motors, etc. When the compressed air in the air tank 13 is supplied to the pneumatic machine and the compressed air in the air tank 13 becomes equal to or lower than a predetermined pressure, the motor 12 is driven again, and the air in the air tank 13 is replenished by the air compressor 11 to increase the pressure in the air tank 13. To stop and repeat.

Here, the dehumidifier 30 is removed from the air tank 13.
When the compressed air is supplied to the drain D1 at the bottom of the air tank 13, the drain D1 is sent to the dehumidifier 30 together with the compressed air, and the drain D1 and the drain generated in the dehumidifier 30 are collected. The air is discharged to the outside from an auto drain trap 32 provided in the middle of a drain pipe 33 communicating with the dehumidifier 30. On the other hand, when the drain D1 does not accumulate at the bottom of the air tank 13, only the compressed air is sent to the dehumidifier 30.

Since the check valve 20 is provided in the middle of the air supply pipe A16, the air tank 13 may be damaged or the manual valve B19 may be left open for any reason. In this case, even if the air pressure on the air tank 13 side becomes lower than the air pressure on the dehumidifier 30 side, the drain on the dehumidifier 30 side does not flow back to the air tank 13 side.

[0023]

As is clear from the above description, the following effects can be obtained by the present invention. First, because the air tank and the dehumidifier communicate with each other through the air supply pipe b, which is open at one end on the air tank side close to the bottom inside the air tank, dew forms inside the air tank. The resulting water droplets can be sent from the air tank to the dehumidifier together with the compressed air, and can be collectively discharged by the dehumidifier.

Second, since drainage from the lower portion of the air tank is not required, the bottom of the air tank can be processed and the auto drain trap and drain pipe can be removed. As a result, the manufacturing process can be simplified. In addition, the manufacturing cost was reduced, and ultimately it was possible to reduce the number of claims and improve the quality.

Third, by cutting the air supply pipe obliquely on the air tank side, the work of pressing the air supply pipe against the bottom of the air tank becomes possible, and the space between the air supply pipe and the bottom of the air tank is taken into consideration. Even if you do not do so, you can secure a certain level of quality.

Fourth, by disposing a check valve in the middle of the air supply pipe a, the air tank 13 may be damaged or the manual valve 19 may be left open for any reason. In this case, even if the air pressure on the air tank 13 side becomes lower than the air pressure on the dehumidifier 30 side, the drain on the dehumidifier 30 side can be prevented from flowing back to the air tank 13 side.

[Brief description of the drawings]

FIG. 1 is a diagram showing an entire air compression device according to the present invention.

FIG. 2 is a detailed view showing the air tank side tip of the air supply pipe of the air compressor according to the present invention.

FIG. 3 is a diagram showing an entire conventional air compressor.

[Explanation of symbols]

 10 Air compressor 11 Air compressor 12 Motor 13 Air tank 13a Through hole 13b・ Drain outlet 14 ・ ・ ・ ・ ・ ・ Belt device 15 ・ ・ ・ ・ ・ ・ Discharge pipe 16 ・ ・ ・ ・ ・ ・ Air supply pipe a 17 ・ ・ ・ ・ ・ ・ Air supply pipe b 18 ・ ・ ・ ・ ・ ・・ Manual valve a 19 ・ ・ ・ ・ ・ ・ Manual valve b 20 ・ ・ ・ ・ ・ ・ Check valve 21 ・ ・ ・ ・ ・ ・ Drain piping 22 ・ ・ ・ ・ ・ ・ Auto drain trap 23 ・ ・ ・ ・ ・ ・Air supply pipe D 30 Dehumidifier 31 Dehumidifier body 32 Auto drain trap 33 Drain pipe 34 Air Supply piping C D1 Drain

Claims (4)

[Claims] The compressed air generated by an air compressor (11) is stored in an air tank (13), and the compressed air stored in the air tank (13) is dehumidified by a dehumidifier (30). In the air compressor for supplying air to the pneumatic machine, an air supply pipe (16) communicating the air tank (13) and the dehumidifier (30) is connected to a through-hole (13a) at the upper part of the air tank (13). ), And one end of the air supply pipe a (16) on the side of the air tank (13) is disposed in a state of being opened close to the bottom inside the air tank (13). Air compression device. 2. In the middle of the air supply pipe a (16),
2. The air compressor according to claim 1, further comprising a check valve. 3. One end of the air supply pipe (16) on the side approaching the bottom inside the air tank (13),
The air compression device according to claim 1 or 2, wherein the air compression device is cut obliquely. 4. One end of the air supply pipe (16) on the side approaching the bottom inside the air tank (13),
The air compressor according to claim 3, wherein the air tank (13) is brought into contact with a bottom of the air tank (13).