KR820002189B1 - The device for removing moisture from pressure gas - Google Patents

Abstract

The device cools press. gas to remove moisture and heats it to obtain dry air. Space between vessel(1) & heat transfer body(2) is used as a cooling fluid channel (A) shaped like screw. Heat transfer body & separate wall body(7) make a cooling gas channel(B). Separate wall body & eddy flow tube (4) make a heating fluid channel(D). Space in eddy flow tube is used as an eddy flow channel(C). Through gas inlet(11), cooling fluid channel is continuous to drain space(E) & gas outlet(12) is continuous to heat fluid channel. Channel construction body(5) makes eddy flow channel & heating fluid channel continuous to drain space. Lower part of eddy flow channel becomes continuous by inclined path(f) & junction path(h).

Description

Pressurized Gas Dehumidifier

1 is a longitudinal front view of a pressurized gas dehumidifier of the present invention.

2 is a right side view of the terminal (except the front view of the auto drain trap installed at the bottom)

3 is a longitudinal sectional view of an auto drain trap showing the moment when the float is sucked in.

4 is a longitudinal sectional view of an auto drain trap showing a state where the piston is lowered.

The present invention relates to a pressurized gas dehumidifier in which a pressurized gas is cooled to remove moisture and then heated to obtain a dry gas. In recent years, compressed air is frequently used in various industries in various applications.

For example, it is widely used as a coating spray, the air for operation of an automatic control apparatus, the power medium of an air pressure tool, or an air pressure apparatus.

In this case, dry pressurized gas with low dew point is required. Otherwise, drainage occurs in the pressurized gas, for example, when used for painting, splashing or staining occurs on the painted surface, and when the pneumatic equipment is driven, the metal member is rusted. Therefore, it is necessary to remove the drain in the compressed air beforehand.

Various dehumidifiers have already been proposed for this purpose. In many cases these dehumidifiers are used in combination with two heat exchangers. That is, a first heat exchanger that cools the pressurized gas to sufficiently lower the atmospheric pressure during saturation to condense water vapor, and a second heat exchanger that heats the gas from which the condensed water is removed and heats it to a temperature suitable for use.

Such dehumidifiers apply various principles such as refrigeration, adsorption, absorption, and compression. However, most dehumidifiers require a cooling medium or an adsorbent material, are complicated in construction, have high operating costs, and are complicated to operate.

The present invention solves the above-mentioned drawbacks, and does not require a separate cooling heating medium by using a medium required for cooling and heating separately from the gas to be dehumidified.

In more detail, when the pressurized gas is introduced at high speed into the vicinity of the jetted pore laid in the tangential direction and generates a vortex in the pipe, a natural phenomenon in which the gas is separated into a cold air and a hot air is used. In other words, due to the vortex action, the high speed flow outside the vortex becomes a hot body, and the low speed flow inside the cold air is used as the cooling medium of the first heat exchanger, and the other heat medium is the second heat exchange. It is used as a heating medium of group.

In addition, the present invention can arrange two heat exchangers concentrically, so that the entire apparatus is extremely small, and it is possible to provide an excellent and efficient dehumidifier without requiring piping for coupling the heat exchanger.

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

1 is a longitudinal front view of the pressurized gas dehumidifier of the present invention, and FIG. 2 is a longitudinal right side view.

However, the auto drain trap attached to the lower part of FIG. 2 shows the external appearance of a front view.

In the drawing, reference numeral 1 denotes a cylindrical container. The container 1 can be made of a metal material, a synthetic resin, or the like. However, a cold-molded nylon having excellent pressure resistance and acid resistance is particularly suitable.

(2) is a heat exchange cylinder, and spiral feathers are formed in the inner surface and the outer surface. In the upper flange portion of the heat exchange cylinder 2, the gas inlet 11 and the gas outlet 12 open side by side on the approximately same horizontal line.

Coupling of the container 1 and the heat exchanger cylinder 2 is performed by inserting a 0-ring 51 between the flange of the upper portion of the container 1 and the flange of the heat exchanger cylinder 2, and by means of the king nut 14. It is strongly fixed.

By the above combination, a spiral cooling passage A is formed between the inner surface of the container 1 and the outer spiral-shaped feather of the heat exchange cylinder 2.

The upper portion of the cooling passage A communicates with the aforementioned gas inlet, and the lower portion communicates with the drain space E, respectively.

Then, a spiral cold air flow path B is formed between the inner spiral target of the heat exchange cylinder 2 and the partition cylinder 7 inserted into the heat exchange cylinder 2. The cold air flow path B communicates with the cold air outlet 17 above the heat exchange cylinder 2, and the cold air outlet 17 is installed in a direction perpendicular to the straight line connecting the gas inlet 11 and the outlet 12. The silencer 16 is attached thereto. On the other hand, the gas discharge passage 20 is drilled in the upper portion of the partition cylinder 7, leading to the gas outlet 12.

0-rings 52 and 53 are inserted and sealed at the position where the gas discharge passage 20 is sandwiched between the partition wall cylinder 7 and the heat exchange cylinder 2. The partition wall body 7 preferably uses a thick heat insulating member to prevent heat from being dissipated.

This is because, as will be described later, the bulkhead cylinder 7 and the outside correspond to the first heat exchanger and the inside the second heat exchanger, and therefore it is necessary to actively block heat conduction therebetween.

The vortex tube 4 of thickness is inserted in the inside of the partition body 7. Four types of cylinders, that is, the container 1, the heat exchange cylinder 2, the partition wall cylinder 7, and the vortex tube 4 are arranged in the center of the core, and among these, the container 1, the heat exchange cylinder 2, and the partition wall cylinder ( 7) are in contact with each other, but only the vortex tube 4 is isolated.

As will be described later, the inside of the vortex tube 4 is a vortex path C in which the high speed vortex gradually rises, and the space between the vortex tube 4 and the partition wall body 7 becomes the heating space D.

(5) is a passage constituent member, the heat exchange cylinder (2) is fixedly attached to the lower end, to provide a passage for connecting the drain space (E) and each flow path (B), (C), (D). Numeral 13 covers the lower end of the passage structural member 5 as a filter.

The filter 13 is sandwiched by the filter band 22 on the outer surface of the heat exchange cylinder 2 at the upper periphery, and fixedly attached to the passage member 5 at the lower end by means of a screw.

Passage member 5 is coupled to the bottom surface and the inner surface of the heat exchange cylinder (2) through the 0-ring (55), 56, respectively.

An injection hole g, an upward passage k, a downward passage f, and a branch passage h are installed inside the passage constituting member 5.

The injection hole g is pierced in a tangential direction so as to be opened in the vortex tube 4, that is, at the lower end of the vortex path c, so that the gas has entered the vortex path g in the tangential direction from the injection hole c. Becomes a high speed vortex and ascends while turning inside the vortex tube 4.

The rising passage k is drilled at the lower end of the heating passage D, so that the gas entering the heating passage D in the rising passage k is gradually heated by receiving heat from the vortex tube 4.

The descending passage f is installed at the blocking of the vortex passage c and is connected to the branch passage h.

The gas passing through the vortex (C) is a high-speed vortex, and by the vortex action, the cold air is separated into the center and the heat is separated outward. Therefore, the hot air body on the outside rises as it is, but the cold air on the center portion is lowered on the contrary because the relative specific gravity is large.

The descending cold air enters the descending passage (f), passes through the branch passage (h), and enters the cold air passage (D).

The present invention artfully utilizes a hole in which gas is naturally separated into a cold air of a hot body by vortex action, and uses it as a heating medium and a cooling medium, respectively.

The passage constructing member 5 provides a passage for properly distributing such a medium. In the figure, 16 is a silencer screwed between the lower end of the vortex tube 4 and the upper surface portion of the passage constitution member 5.

At the upper end of the vortex tube 4, a cap 24 having a thin hole j is fitted. On the upper part of the cap 24 is attached a hot air discharge valve 6 for opening and closing the opening 25.

In the opening / closing operation of the opening 25, the cap-shaped hot air discharge valve 6 screwed to the upper spiral portion of the partition cylinder 7 opens and closes the opening 25 by the valve body 19. Reference numeral 23 denotes a lock nut for fixing the hot air discharge valve 6.

FIG. 1 shows the valve thread open state, and FIG. 2 shows the valve closed state. The silencer 18 is built in the hot air discharge valve 6. The silencer 16 of the cold air outlet 17 and the silencer 18 of the hot air discharge valve 6 which maintain the pressurized state inside the aircraft and prevent noise are sufficient for the inside of the vortex plate 4. To generate the vortex of velocity, the flow path losses of the silencers 16 and 18 must be set to an appropriate value.

The configuration of the dehumidifier main body has been described above.

Next, the structure of the auto drain trap 3 is demonstrated.

A drain hole 29 is provided in the lower surface of the dehumidifier container 1 to be used for drain discharge.

The drain valve may be simply attached thereto, and sometimes the valve may be opened to discharge the drain.

However, in this example, the drain is kept in place, and an auto drain trap which discharges the drain when it reaches a certain amount or more is attached.

The drain hole 29 communicates with the primary drain storage chamber M via the inlet hole 33 and the through hole 39.

In the primary drain storage chamber M, a light float 31 is provided.

An opening is located at the center of the partition wall between the primary drain storage chamber M and the secondary drain chamber N, and the opening valve seat 41 of the sleeve 37 is provided in the opening.

The tip valve seat 41 has a cylindrical shape, and a valve hole 42 is opened at the side surface.

Reference numeral 36 serves as a valve body to be fitted into the valve seat 41 to open and close the valve hole.

The head of the valve body 36 is sandwiched and supported by the space inside the float 31. When the float 31 is lowered, the valve body 36 is pushed down, and is lifted by the partition wheel 43 when the float 31 rises above a certain height.

In other words, hysterisis operation is performed following the float 31. 34 sucks the magnetic substance 35 attached to the upper surface of the float 31 as a magnet.

Reference numeral 32 in the drawing is a piston that is free to lift.

Usually, since the primary drain storage chamber M is pressurized and the secondary drain chamber N is under atmospheric pressure, the piston 32 is pressed upward.

The space above the piston 32 communicates with the secondary drain chamber N via the passage 5.

The operation of the auto drain trap in the above structure will be described.

At first, the float 31 is in the lowest position, and the valve body 36 blocks the valve hole 42.

Therefore, the piston 32 is in the uppermost position due to the pressure difference.

In the dehumidifier, the drain falls through the drain hole 29 and the through hole 39 in the primary drain storage chamber M and is stored therein. As the storage amount of the drain increases, the float 31 rises under buoyancy. When the magnet 34 of the magnetic body 35 approaches this distance by this synergistic action, the magnetic force overcomes the increasing force, and the float 31 is sucked up and rises rapidly.

3 shows such a suction state.

At this time, since the partition wheel 43 of the float 31 raises the head of the valve body 36, the valve hole 42 is opened.

The drain is then injected from the primary storage chamber M into the secondary drain chamber N and discharged again from the through hole 45 of the sleeve 37.

When the drain is completely excluded from the primary drain storage chamber M, the pressure is equal because the primary storage chamber M and the secondary drain chamber N communicate with each other.

As a result, the force for rolling up the piston 32 is lost, and the piston 32 descends due to self-sustainment, and the float is pressed down as its tip.

4 shows such a state.

The float 31 falls, and the valve body 36 closes the valve hole 42. When the drain is discharged to some extent from the secondary drain chamber N, the gas in the secondary drain chamber N runs to the atmosphere, so that the atmospheric pressure of the secondary drain chamber N becomes equal to the atmospheric pressure.

The piston 32 then rises under the pressure from the primary drain reservoir and returns to its original position.

The configuration and operation of the auto drain trap are as described above.

Next, the operation of the dehumidifier will be described.

The heating gas is supplied from the gas inlet 11, and the pressurized gas entering from the gas inlet 11 enters the spiral cooling flow path A and is cooled while turning down the flow path A.

The cooling medium is a cold air in the cold air flow path (B).

Since the gas under normal pressure was compressed, the partial pressure of water vapor was increased by that ratio, and approximated to the saturated steam pressure of water at that temperature.

Since it cools in such a state, saturated steam pressure becomes lower than the steam partial pressure of the gas.

Water vapor corresponding to the secondary partial pressure condenses and becomes a drain, and is stored gradually in the drain space (in the case of installing the auto drain trap 3 in the primary drain storage chamber M).

Some of the gas which passed the filter 13 intrudes as a tangential high speed airflow from the injection hole g into the vortex path C, and starts vortex movement in it.

As described above, the outer side of the vortex is separated into a hot air body, and the center is separated into a cold air body.

The hot air body rises while heating the gas in the heating flow path D through the vortex pipe 4, and enters the silencer 18 of the hot air discharge valve 6 via the upper opening j, where the red Extremely reduced pressure is discharged to the outside.

On the other hand, since the cold gas generated in the center of the vortex path C has a large specific gravity, it descends and enters the cold air path B via the descending path f and the branch path h.

Here, the inlet gas in the cooling flow path A is sufficiently cooled through the heat exchange cylinder 2 while rising along the spiral cold air flow path B. Then, the pressure is reduced by the silencer 16 and discharged from the cold air outlet 17.

The remaining gas which does not flow into the injection hole (g) enters into the heating passage (D) from the rising passage (k), and rises while being heated by the vortex tube (4).

Since it is sufficiently heated here, it is sufficiently hotter than the dew point of the gas and discharged from the gas outlet 12.

The pressurized gas discharged from the gas outlet 12 is used for a required use such as paint spray, air pressure equipment, and the like.

The gas from which the drain is removed in this way has a low dew point and contains little moisture, so that no drain is generated in any application.

According to the present invention, the pressurized dry gas can be made extremely easy.

That is, it does not need a cooling medium or a heating gas in another, and separates the pressurized gas and uses it as a medium for cooling heating.

In addition, since the first heat exchanger and the second heat exchanger are provided separately and concentrically arranged, they are extremely simple.

And since the gas inlet 11 and the gas outlet 12 can be arrange | positioned in the same straight line, piping is also convenient.

As mentioned above, this invention is very excellent and useful.

Claims (1)

A heat exchange cylinder (2) having spiral feathers formed on the outer and inner surfaces thereof is inserted into the container (1), and the partition cylinder (7) is installed to be inscribed in the heat exchange cylinder (2). Is equipped with a vortex tube (4), and a passage forming member (5) is fixedly attached to the lower end of the heat exchange cylinder (2) and spirally cooled between the container (1) and the heat exchange cylinder (2). A flow path A is formed between the heat exchange cylinder 2 and the partition cylinder, and a spiral air flow path B is provided. A heating path D is formed between the partition cylinder 7 and the vortex tube 4. A vortex path (C) is formed inside the vortex pipe (4), respectively, and the vessel (1) is passed through the cooling flow path (A) in which the gas inlet (11) which is drilled and installed in the flange of the heat exchange cylinder (2). The gas outlet 12 communicated with the drain space E of the lower part, and perforated in the flange of the heat exchange cylinder 2, communicates with the heating flow path D, and is tangentially perforated and installed in the passage constituting member 5, respectively. direction The drain space (E) and the vortex (C) and the heating channel (D) communicate with each other by the injection hole (g) and the upward passage (k), and the cold air above the lower end of the vortex (C). B) is communicated by the descending passage f and the branch passage h, and the silencers 16 and 18 are provided at the outlet 17 and the hot air outlet of the cold air passage B. Pressurized gas dehumidifier.

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