JPS6242725A - Air dehumidifier - Google Patents

Abstract

PURPOSE:To simultaneously remove water, oil and dust in compressed air by spouting the compressed air into a cooling liq. in a tank provided with a cooling means and furnished with an ultrasonic transmitter on its inner wall. CONSTITUTION:A cooling pipe 2 is arranged in a tank 1, an ultrasonic transmitter 12 is provided on the inner wall of the tank 1 and a liq. 8 such as an antifreezing soln. is charged in the tank 1. Compressed air from an inlet 5 is spouted as the air bubbles from an ejection pipe 10 into the liq. 8 and diffused by an air foam diffuser 11. The wafer is condensed by the direct heat exchange between the liq. cooled by the cooling pipe 2 and the air bubbles. The air bubbles are pulverized by the action of the ultrasonic transmitter 12, hence the deposition of the bubbles on the wall of the cooling pipe 2 is prevented, the heat exchange is improved and the load of a refrigerator 3 is reduced. When the air bubbles are removed from water, foreign matter such as oil, dust, etc., are separated, floated to the liq. surface 8a and discharged from a collector 13. The air bubbles are passed through drain separators 15 and 16 provided in a space 9 and discharged as dry air from an outlet 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air dehumidifier for removing moisture, oil, dust, etc. contained in air, particularly compressed air.

[Conventional technology]

Pressure equipment, air conditioning equipment, etc. generally rely on clean compressed air, but for example, the compressed air produced by a compressor may contain moisture that was contained in the air before compression, as well as moisture from the compressor. When compressed air flows through pipes during the process, oil such as lubricating oil and dust are mixed in, so in order to obtain clean compressed air, these foreign substances such as moisture, oil, and dust must be removed. .

Conventionally, the air dehumidifier used for this purpose is shown in Figure 3.In Figure 1, 1 is a tank, 2 is a cooling pipe installed in this tank, and this cooling pipe is 2
is the heat exchange part of Frozen@3, and this Frozen! In addition to the cooling pipe 2, the j13 is a conventional one consisting of a compressor, an expansion valve, a condenser, etc. (not shown).

Details of the explanation will be omitted. 4] is a puffful plate disposed in the tank 1; 5 is an inlet for introducing compressed air provided at the bottom 1a of the tank 1 in which the puffful plate 4 is disposed; 6 is an inlet 5 provided therein; A discharge pipe 6a attached to the bottom m 1 a to discharge moisture etc. is connected to this discharge pipe 6.
The gap valve 7 is an outlet for the dehumidified dry air 61q into the Z section lb of the tank 1 equipped with this discharge pipe 6.

Next, I will explain the effect. When compressed air from which moisture is to be removed flows into the tank l from the inlet 5, it is cooled by the cooling pipe 2, reaches the dew point, and the compressed air containing water droplets collides with the buckle plate 4 and flows around the cooling pipe 2. During the flow, the air is cooled by tangential heat exchange through the pipe wall of the cooling pipe 2, and moisture contained in the air condenses to become dehumidified dry air, which flows out from the outlet 117.

[Problem that the invention attempts to solve]

However, when attempting to dehumidify the moisture contained in the air by condensing it with S, there was a problem in that air bubbles landed on the V-wall of the cooling pipe 2, impairing heat exchange. Also,
In order to obtain clean compressed air, 1 In addition to removing moisture, in order to remove oil, guest parts, etc. from the compressed air,
Since a line filter is used, the overall equipment space is large and the workability is poor.

[F-stage to solve problems]

This invention was made to solve these problems, and includes a jetting means for spouting compressed air as bubbles into the liquid in the tank, a cooling means for cooling the liquid in the tank, and a cooling means for cooling the liquid in the tank. The tank is equipped with an ultrasonic transmitter installed on the inner wall of the tank, and a discharge stage for discharging oil, dust, etc. floating in the liquid from the liquid surface inside the tank, which is equipped with the Mi sonic wave transmitter. The object of the present invention is to provide an air dehumidifier that simultaneously dehumidifies moisture and removes oil, dust, etc. contained in compressed air.

〔Example〕

An embodiment of the present invention will be described based on FIG. Third
Same as the conventional example (equivalent) component cost, east is the same (equivalent)
They are indicated by symbols, and repeated explanations will be omitted.

In the figure, 8 is a liquid such as antifreeze in tank l, and 9
is in communication with the outlet [17] of the dry air that has been dehumidified in the space of the tank 1 containing this liquid 8; In the pipe, open the spout so that the compressed air becomes bubbles and spews out evenly at each part of the horizontal cross section of the tank 1. 11 is a bubble disperser installed between this jet '1ilo and the cooling pipe 2, 12 is an ag'i wave oscillator signal installed on the inner wall of the tank l to which this bubble disperser 11 is attached. a collector 13 which is a discharge means for collecting oil, dust, etc. floating on the liquid surface 8a of the liquid 8 contained in the tank l in which the ultrasonic transmitter 12 is installed and discharging the collected oil and dust to the outside of the tank 1;
a is a discharge pipe of the collector 13, 14 is a switching valve between the discharge pipe 13a and the discharge pipe 6, 15 is a collision type drain separator installed in the space 9 of the tank 1, and 16 is a demister-η!
It is a drain separator.

The effect will be explained.

When compressed air is introduced into the jet pipe 10 from the inlet 5, it becomes bubbles and jets out into the liquid 8.The air bubbles are evenly distributed in the tank 1 without being concentrated in the center, and rise due to buoyancy, forming a bubble disperser. 11, the liquid is cooled by the cooling pipe 2, which is a cooling means, and is dispersed. Through direct heat exchange between the liquid and the bubbles, the cooled and condensed water moves to the liquid and approaches the liquid surface 8a while being dehumidified.

Also, while the bubbles are moving upwards in the liquid 8, ultrasonic waves are emitted rS.
Due to the action of the 81 sound waves propagated from 12 to the liquid, the bubbles are fragmented, and the constant cleaning of the pipe wall of the cooling pipe 2 is reduced, thereby stably promoting heat exchange and reducing the load on the refrigerator 3. Reduce.

In addition, water is removed from the air bubbles, as well as oil.

Foreign matter such as dust is separated and floats on the liquid surface 8a, collected by the collector 13, and discharged from the discharge pipe 13a to the outside of the tank 1. Air bubbles float from the liquid surface 8a to the empty flit 9, and are Drain separator 15.16 attached to 9! f
The drain is separated by the action of the ultrasonic wave from the i-wave signal device 12, and the compressed air becomes clean, dehumidified dry air and flows out from the output lower.

In this embodiment, instead of cooling the compressed air by indirect heat exchange through an air layer between the cooling tube wall and the cooling tube wall as in the conventional device, the compressed air is cooled in the cooling liquid 8. Compressed air compressed at a pressure close to atmospheric pressure is ejected in the form of bubbles, and the temperature of this air is cooled and lowered to near the temperature of the liquid, reaching the dew point equivalent to the same temperature and being contained in the air. It is possible to remove moisture and foreign substances such as oil and dust at the same time.

In addition, the air dehumidifying device of this embodiment does not require a factory filter to remove oil, dust, etc. after removing moisture, so the device can be made smaller and requires less installation space. Piping work is easy, costs are low, and one device can dehumidify, remove oil, and dust.

[Other Examples]

In another embodiment of the invention, the compressed air is injected into the liquid 8 in the tank 1 without pre-cooling, but as shown in FIG. tube 5
a, and this pre-cooling pipe 5a is arranged in the space 9. Therefore, when the compressed air passes through the pre-cooling pipe 5a before being cooled by the cooling pipe 2, the compressed air becomes low in humidity from the liquid level 8a. The load on the refrigerator 3 can be reduced, and the ultrasonic waves emitted from the sonic wave transmitter 12 can prevent droplets from adhering to the outer wall of the precooler v5a, making it possible to efficiently generate dry compressed air. , moreover, e.g.

Industrial measurement system: Pressure/vacuum/level measurement, p. 468.
Since a level controller 17 as shown in Kogyo Shimbunsha (1969) is provided, the liquid level of the tank to which internal pressure is applied can be automatically controlled to the predetermined upper and lower limits. It can have similar effects.

A pipe 5b that sends the compressed air from the precooling pipe 5a to the ejection pipe 10.
If it is installed in tank 1, the equipment space will be small.
Further, if a three-way valve is provided between the discharge pipe 6 and the discharge pipe 13a, water, oil, dust, etc. can be discharged to the outside of the tank 1 by switching the valve.

[Effect of Shot 1!1] As explained north, this f! In this method, compressed air is ejected into the liquid cooled by a cooling pipe and floated in the liquid, making it possible to remove oil and dust contained in the compressed air. Since it is placed on the inner wall, the action of ultrasonic waves breaks up the bubbles, prevents them from adhering to the cooling means, and improves heat exchange.
One device can dehumidify and remove oil, dust, etc. at the same time, and the space required for installation is small, making installation and piping easier.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram II of an embodiment of the present invention, FIG. 2 is an explanatory diagram of an equivalent embodiment, and FIG. 3 is an explanatory diagram of a conventional device. 1...Tank 2...Cooling pipe 7...Out [1 8...Liquid 8a...Liquid [m 9... ... Space IO ... Ejection pipe 12 ... Ultrasonic transmitter 13 ... ... Collector In each figure, the same reference numerals indicate the same or corresponding parts. Figure 7 Figure 2 Figure 7, Tasig 2: Oki fI71F 7° Boro δ: 34V Hayashi 8a, Liquid level 9: g!閤

Claims (1)

[Claims] A tank containing a liquid leaving a space communicating with an outlet of dehumidified dry air, a jetting means for spouting compressed air as bubbles into the liquid in the tank, and a cooling means for spouting the bubbles from the liquid in the tank. A cooling means for cooling, an ultrasonic transmitter installed on the inner wall of a tank equipped with this cooling means, and a tank equipped with this ultrasonic transmitter and cooling means to remove oil, dust, etc. floating in the liquid. It is characterized by comprising a discharge means for discharging the liquid from the liquid level in the space, and simultaneously dehumidifying moisture contained in the compressed air and removing oil, dust, etc. through direct heat exchange with the cooled liquid. Air dehumidifier.