KR101089497B1 - Apparatus of cooling and drying an air using vortex and system utilizing the same - Google Patents

Abstract

An air cooling drying apparatus using vortex is provided. The air-cooled drying apparatus includes a lower chamber that rotates and accelerates hot and humid air introduced from the outside to remove moisture from the air and to dry the upper chamber, and an upper chamber through which the air is discharged. An EVA tube communicating with the upper and lower chambers, having a tube surrounded by a cooling tube, and cooling the dried air while the dried air flows into the upper chamber is provided. A plurality of heat pipes are disposed around the EVA tube in the lower chamber and extend to the upper chamber, and heat exchange with the air to cool the air. The cooling air introduced into the upper chamber through the eva tube cools and exhausts the heat pipe.

Description

Air cooling and drying apparatus using vortex and system using same {APPARATUS OF COOLING AND DRYING AN AIR USING VORTEX AND SYSTEM UTILIZING THE SAME}

The present invention relates to an air cooling drying apparatus and a system using the same, and more particularly, to an air cooling drying apparatus using a vortex and a system using the same.

In general, the air conditioning system is configured to operate in combination with the driving device for performing various air conditioning, and is composed of a pressure source, a cooler, a dryer, a purifier, a control valve and other accessories. Here, the driving device refers to a device that converts compressed air energy into mechanical linear kinetic energy or rotational energy.

Applications of air conditioning systems include medical, instrumentation / control equipment, powder coating, general pneumatics and sand blasting. Accordingly, the technology in the general pneumatic field to which the present invention can be applied is expected to bring a variety of applications in the future. Moreover, the fields of use of air coolers and dryers applied to such air conditioning systems are extensive, such as machine tools, pneumatic and air cylinders, general automation processes, general coating, precision field, measuring equipment, textile industry, raw material transfer, powder coating, precision Since many studies are being conducted to apply to the life around us, such as parts drying line, semiconductor electronic components, pharmaceutical industry, ultra precision industry, chemical industry, medical purpose, optics, food processing industry, etc., it is expected that the present invention will be utilized in various ways. Can be.

The air conditioning system generally goes through the following process. Compressed air generated from the compressor, which is an air pressure source, is heated up to 150-250 ° C by adiabatic compression and is supplied to the tank. The air here may be air. The air entering the tank is cooled in a cooler and then passed through a dryer and discharged with water removed. Subsequently, the moisture-depleted air passes through a filter, which is a purifier, to separate and remove foreign substances and residual moisture. The air from which foreign matters and the like is removed is provided to a drive device requiring such air after the pressure is reduced in the pressure control valve.

The above-mentioned cooler has a tube enclosed by a coolant tube through which a coolant flows, and hot air is cooled through heat exchange with the coolant tube. The cooler may be an after cooler. However, the apparatus has an expensive and complicated configuration, and a cooling means for cooling the refrigerant cannot be separately installed, and thus, the apparatus is not suitable for installation in a narrow place.

In addition, the dryer is classified into an adsorption type and an absorption type according to a drying method. The adsorption type compresses the air, and the saturated water vapor is sucked through the compressor and compressed. After that, the compressed air is cooled by a cooler to remove the condensed water first, and the moisture of the wet air containing the uncondensed saturated water vapor. Is removed by adsorption of an adsorbent (silica gel, alumina gel, synthetic zeolite, etc.). This method has a problem in that it is necessary to determine the consumption time of the desiccant in order to continue providing the desiccant. Absorption is a method of absorbing moisture using a hygroscopic solution (aqueous lithium salt solution, toriethylene glycol, etc.). Absorption was also inconvenient, including frequent replacement of the hygroscopic solution.

Accordingly, not only various attempts have been made to solve the above-described problems in the cooler and the dryer, but researches for implementing these functions in one apparatus are being conducted.

The technical problem to be achieved by the present invention is to provide an air-cooled drying apparatus that contributes to performing the cooling and drying functions at the same time, as well as having an excellent cooling and drying efficiency.

Another technical problem to be achieved by the present invention is to provide a system having an air-cooled drying apparatus that simultaneously performs cooling and drying functions and contributes to excellent cooling and drying efficiency.

The object of the present invention is not limited to the above-mentioned object, other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention for achieving the above technical problem, the air-cooled drying device is a lower chamber and the air is discharged by rotating the hot and humid air flowing from the outside to remove moisture from the air to dry And an upper chamber. An EVA tube communicating with the upper and lower chambers, having a tube surrounded by a cooling tube, and cooling the dried air while the dried air flows into the upper chamber is provided. A plurality of heat pipes are disposed around the EVA tube in the lower chamber and extend to the upper chamber, and heat exchange with the air to cool the air. The cooling air introduced into the upper chamber through the eva tube cools and exhausts the heat pipe.

In some embodiments of the present invention, a plurality of vortex generators may be provided disposed between the heat pipes to partition the heat pipes, in which the air generates a vortex flow in each of the heat pipes.

In another embodiment, the heat pipe is an outer heat pipe, with a plurality of inner heat pipes extending between the eva tube and the outer heat pipe in the lower chamber to the upper chamber. Located in the lower chamber and disposed between the outer heat pipe and the inner heat pipe, the air flows from the bottom of the outer heat pipe to the top, and the air flowing upwards from the top to the bottom of the inner heat pipe. An outer partition wall may be provided to form a flow path of the air to face.

In another embodiment, the cooling tube may include a CFC refrigerant, a refrigerant cooler for cooling the CFC refrigerant and a case for receiving the upper and lower chambers may be provided. The refrigerant cooler may be included in the case or spaced apart from the case.

In another embodiment, a vortex tube may be disposed to discharge the cooling air passing through the eva tube into cold and hot air, and to supply the cold air to the cooling tube.

According to another aspect of the present invention for achieving the above technical problem, the system includes a compressor, a tank for storing the air compressed from the compressor and an air cooling drying device for cooling and drying the air flowing from the tank. The air-cooled drying apparatus includes a lower chamber that rotates and accelerates hot and humid air introduced from the outside to remove moisture from the air and to dry the upper chamber, and an upper chamber through which the air is discharged. An EVA tube communicating with the upper and lower chambers, having a tube surrounded by a cooling tube, and cooling the dried air while the dried air flows into the upper chamber is provided. A plurality of heat pipes are disposed around the EVA tube in the lower chamber and extend to the upper chamber, and heat exchange with the air to cool the air.

Specific details of other embodiments are included in the detailed description and the drawings.

According to the present invention, an air cooling drying apparatus has a chamber for turning and accelerating air and a plurality of heat pipes installed inside the lower chamber. The hot and humid air is cooled by contacting and exchanging heat with a plurality of heat pipes and simultaneously removing moisture in the air as the air is accelerated while rotating in the chamber using a Coanda effect. In addition, by forming a vortex of air flow around the plurality of heat pipes, the effective contact with the heat pipes can be increased, so that the cooling efficiency can be increased. In addition, as the air is cooled, the air may be dried, thereby improving drying efficiency.

In addition, the air-cooled drying apparatus may be surrounded by a plurality of heat pipes, and may have an eva tube formed in a spiral form with a cooling tube on the outside thereof. Here, the cooling tube may be connected to the Vollex tube, and the Vollex tube may discharge the cooling dry air provided from the Eva tube into cold and hot air and supply the cold air to the cooling tube. Accordingly, the CFC may not be used as the refrigerant of the cooling tube, thereby solving the problem of environmental pollution.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings and the contents described below. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments disclosed herein are being provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Like numbers refer to like elements throughout. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, the singular forms also include the plural unless specifically stated otherwise in the text. As used herein, “comprises” and / or “comprising” refers to the presence of one or more other components, steps, operations and / or elements in which the mentioned components, steps, operations and / or elements are known. Or does not exclude additions.

Hereinafter, an air cooling drying apparatus according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2. 1 is a schematic view of an air cooling drying apparatus according to an embodiment of the present invention, Figure 2 is a schematic cross-sectional view taken along the line A-B of FIG.

Referring to FIG. 1, the air cooling and drying apparatus 100 may dry and cool the high pressure, high temperature, and humid air introduced through the chamber inlet 106 from an external compressor or a tank storing air, thereby cooling the outlet 124. To the external device. Herein, the air may be various gases used in an external device, and for convenience of description, the air will be described as an example. In the case of air, it may be adiabatic compressed from the compressor to a temperature of about 150-250 ° C.

The air cooling and drying apparatus 100 includes a lower chamber 102 for removing moisture and drying water from high temperature and high humidity air introduced from the outside, an upper chamber 104 through which air is discharged, and upper and lower chambers 102 and 104. It includes a case (not shown) to accommodate. In this case, the upper portion of the lower chamber 102 may be formed in a cylindrical shape, and the lower portion of the lower chamber 102 may be formed in a conical shape so as to increase the revolution speed of air. Accordingly, since the air of high temperature and humidity rotates and accelerates along the inner sidewall of the lower chamber 102, the moisture and impurities in the air are separated from the air by centrifugal force and the Coanda effect, and thus the drain ( Through 120).

The air cooling drying apparatus 100 communicates the upper and lower chambers 102 and includes an eva tube 118 surrounded by a spiral cooling tube 122. The cooling tube 122 may include a refrigerant, and may be, for example, a CFC gas or an FCFC gas. The cooling tube 122 is connected to the refrigerant cooler 128, and the refrigerant cooler 128 cools the CFC whose temperature is increased due to heat exchange occurring in the cooling process of air performed in the eva tube 118, which will be described later. It can be circulated to the cooling tube 122. The refrigerant cooler 128 may be integrally included in the case or installed separately from the case. Accordingly, when the installation place is narrow, for example, when the installation place is installed in the engine room of various ships, the machine room of industrial equipment, or the like, only the refrigerant cooler 128 can be separately installed. In addition, the hot air coming out of the refrigerant cooler 128 separately installed can be used as heating in the required space.

On the other hand, the air cooling drying apparatus 100 includes a plurality of outer heat pipes 110 disposed around the eva tube 118 in the lower chamber 102. The outer heat pipes 110 are disposed at equal intervals along the outer circumference of the eva tube 118 and extend from the lower chamber 102 to the upper chamber 104. The outer heat pipe 110 may be filled with a liquid having excellent heat transfer rate. The outer heat pipe 110 exchanges heat while contacting air in the lower chamber 102. In this case, heat exchange through the outer heat pipe 110 can be efficiently performed as air flows in the form of a large vortex along the inner wall of the lower chamber 102. As a result, the air is cooled through the outer heat pipe 110 as well as the air generated in the lower chamber 102 described above, so that moisture in the air can be separated.

In addition, the vortex guide vanes 108 disposed between the outer heat pipes 110 and partitioning the outer heat pipes 110 may be disposed in the lower chamber 102. The vortex guide vane 108 may be composed of walls facing the inner wall and spaced apart from the inner wall of the lower chamber 102. Thereby, the air rotates along the inner wall of the lower chamber 102 while having local vortex flow in the region between the vortex guide vanes 108, as shown in FIG. To increase the effective contact between the two.

In addition, the air cooling drying apparatus 100 is located between the eva tube 118 and the outer heat pipe 110 in the lower chamber 102 and includes a plurality of inner heat pipes 114 extending to the upper chamber 104. The outer partition 112 may be disposed in the lower chamber 102 and disposed between the outer heat pipe 110 and the inner heat pipe 114. The inner heat pipe 114 is substantially the same in structure and function as the outer heat pipe 110 described above. The outer partition 112 moves the air flow path from the bottom of the outer heat pipe 110 to the top thereof, as shown in FIG. 1, and then flows from the top of the inner heat pipe 114 to the bottom thereof. Can be deployed. Accordingly, the air is sufficiently in contact with the outer heat pipe 110 and the inner heat pipe 114 to achieve efficient heat exchange.

In addition, an inner partition 116 disposed between the eva tube 118 and the inner heat pipe 114 may be located in the lower chamber 102. The inner partition 116 has a plurality of inlets 117 at the top to induce the vortex around the eva tube 118, as shown in FIG. 2, and the inlet 117 surrounds the eva tube 118. Are arranged at equal intervals along the direction of the circumference, and may be formed so that air flows substantially horizontally with a predetermined portion of the circumference. For reference, in FIG. 2, the outer partition and the inner heat pipe are omitted. Accordingly, the air in contact with the upper portion of the inner heat pipe 114 forms a rotational flow around the eva tube 118, which may be cooled and dried by the Coanda phenomenon and centrifugal force.

Hereinafter, an operation process of the air cooling drying apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

Hot humid air flowing from the compressor or the like is introduced through the chamber inlet 106 of the lower chamber 102 to form a large rotational flow in the lower chamber 102. Accordingly, the air is primarily cooled and dried by the Coanda phenomenon and centrifugal force, and impurities such as moisture and waste lubricant in the air are separated and discharged through the drain 120.

Subsequently, the first cooled and dried air is secondarily cooled while being heat exchanged through contact with the outer heat pipe 110. In this case, air is caused by the vortex guide vanes 108 partitioning the outer heat pipes 110 to form a vortex locally in the vicinity of the outer heat pipe 110, as shown in FIG. Contact with pipe 110. The air heat-exchanged with the outer heat pipe 110 is cooled by the upper side of the inner heat pipe 114 along the outer partition 112 to be heat-exchanged. Moisture in the air may also be separated through the above-described secondary and tertiary cooling.

Air heat exchanged with the inner heat pipe 114 is led to the top of the eva tube 118 along the inlet 117 of the inner partition 116. As shown in FIG. 2, the air introduced through the inlet 117 forms a rotational flow around the Eva tube 118, and is further cooled by the Coanda phenomenon and centrifugal force to further remove residual moisture. .

Air guided to the lower end of the eva tube 118 by the inner partition 116 is introduced into the eva tube 118 and moved to the upper chamber 104. As air moves to the upper chamber 104, a dew point environment is created through the cooling tube 122. As a result, the moisture in the air is converted into droplets at the dew point and flows down the Eva tube 118 by gravity. Meanwhile, the air cooled and dried through the eva tube 118 is formed in the upper chamber 104 to form a vortex and extends to the upper chamber 104 of the inner heat pipe 114 and the outer heat pipe 110. The liquid can be cooled. That is, the cooled liquid may circulate with the fluid that has become hot by heat exchange under the inner heat pipe 114 and the outer heat pipe 110. In addition, the air introduced into the upper chamber 104 may provide the external device with dry air whose temperature slightly rises by heat exchange with the inner heat pipe 114 and the outer heat pipe 110.

3 to 5, the air-cooled drying apparatus according to another embodiment of the present invention will be described in detail. Figure 3 is a schematic diagram of an air cooling drying apparatus according to another embodiment of the present invention, Figure 4 is a schematic cross-sectional view of a vortex tube applied to the air cooling drying apparatus according to another embodiment of the present invention, Figure 5 is a present invention A schematic cross-sectional view of a venturi nozzle applied to an air cooling drying apparatus according to another embodiment of the present invention.

This embodiment is substantially the same except for the vortex tube which is connected to the cooling tube of the air cooling drying apparatus mentioned in the embodiment of FIGS. Therefore, the description will be mainly focused on this.

Referring to FIG. 3, the air cooling and drying apparatus 100a is configured to pivot and accelerate high temperature and high humidity air introduced from the outside to remove moisture from the air and dry the lower chamber 102 as in the embodiment of FIG. 1. The upper chamber 104, upper and lower chambers 102 and 104, through which air is discharged, and having a tube surrounded by the cooling tube 122, while the air flows into the upper chamber 104. And a plurality of outer heat pipes 110 disposed around the eva tube 118 in the lower chamber 102 and extending to the upper chamber 104 for cooling. In addition, the air cooling drying apparatus 100a may include a plurality of vortex guide vanes 108 disposed between the outer heat pipes 110 such that air in each of the outer heat pipes 110 generates a vortex flow. .

In addition, a plurality of inner heat pipes 114 and outer heat pipes 110 and positioned between the eva tube 118 and the outer heat pipe 110 in the lower chamber 102 and extending to the upper chamber 104; An outer partition 112 disposed between the inner heat pipes 114 may be located. In addition, an inner partition wall disposed between the eva tube 118 and the inner heat pipe 114 in the lower chamber 102 and having a plurality of inlets 117 at the top to induce the vortex around the eva tube 118. 116 may be installed.

Meanwhile, the cooling tube 122 may receive a cooling gas from the supply pipe 142 connected to the vortex tube 130. The vortex tube 130 classifies the cooling air passing through the eva tube 118 into cold and hot air, supplies cold air to the cooling pipe 122 through the cold air exhaust pipe 144, and sprays hot air to the venturi nozzle 150. You can. The vortex tube 130 may operate in the following process.

Referring to FIG. 4, when the cooling air passing through the eva tube 118 is supplied to the vortex tube inlet 132, the compressed air is introduced into the vortex rotating chamber 134 of the tubular shape to make the ultra-high rotation at the first millions of RPM. Done. This rotating air (hereinafter referred to as the primary vortex) is partially discharged through the hot air outlet 136, and the remaining air is returned by the control valve 139 to form the secondary vortex inside the primary vortex. It exits through the cold air outlet 138. That is, in the inner space of the vortex tube 130, separate vortices are formed that run in opposite directions along the longitudinal direction from the outside and the inside.

At this time, the secondary vortex flow loses heat and is directed towards the cold air outlet 138 while passing through the region of lower pressure inside the primary vortex flow. Here, the two air streams rotated as described above are rotated in the same direction and at the same angular velocity, wherein the air particles in the inner flow (secondary vortex) are rotated one time with the air particles in the outer flow (primary vortex). (The same angular velocity), the actual speed of motion is lower in the inner flow than in the outer flow. This difference in kinetic speed means that the kinetic energy is reduced, and this lost kinetic energy is converted to heat, raising the air temperature in the outer flow (primary vortex), and the inner flow (secondary vortex) becoming more and more cool. It goes down.

Inside the vortex tube 130 of FIG. 4, the spiral arrow (proceeding to the right) indicated relatively outward represents the flow of the primary vortex, and the spiral arrow (proceeding to the left) marked inside represents the flow of the secondary vortex. Indicates.

According to this embodiment, since the CFC may not be used as the refrigerant of the cooling tube, the problem of environmental pollution can be solved.

As described above, the venturi nozzle 150 may be provided with heat from the vortex tube 130 through the first nozzle inlet 152, as shown in FIG. 5. In this case, the heat is in the form of a vortex. The furnace may be introduced into the first nozzle inlet 152. In addition, the venturi nozzle 150 may be provided with warm dry air supplied from the outlet 124 of the upper chamber 104 through the second nozzle inlet 154. In addition, the second nozzle inlet 154 may receive the cool air of the cooling pipe 122 together with the warm dry air of the outlet 124.

The hot, warm dry air and cold air are mixed in the mixing section 156, and the mixed air is turned into air having a high velocity flow through the narrow inlet. High-speed flow of air may be exhausted through an outlet 158 that is connected to an external device.

Hereinafter, a system to which an air cooling and drying apparatus according to an embodiment of the present invention is applied will be described with reference to FIG. 6. 6 is a system employing an air cooling drying apparatus according to an embodiment of the present invention.

The system 200 provides air, such as low temperature dry air, to an external device as needed, including a compressor 210 for adiabatic compression of air, a tank 220 for storing compressed air, and cooling and drying the stored air to discharge it. It may be composed of an air cooling air device 100 and an external device 230 for receiving cooled and dried air. In this case, the air cooling air apparatus may adopt the air cooling drying apparatus mentioned in the embodiment of FIG. 1 or FIG. 3.

In addition, a storage tank (not shown) for temporarily storing the air discharged from the upper chamber of the air cooling air device 100 between the air cooling drying device 100 and the external device 230 according to the pressure in the storage tank. Control means (not shown) for controlling the compressor on / off may be further provided.

Although the present invention has been described in detail through the representative embodiments, those skilled in the art to which the present invention pertains can make various modifications without departing from the scope of the present invention. Will understand. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by all changes or modifications derived from the claims and the equivalent concepts as well as the following claims.

1 is a schematic diagram of an air cooling drying apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view taken along the line A-B of FIG. 1.

3 is a schematic view of an air cooling drying apparatus according to another embodiment of the present invention.

Figure 4 is a schematic cross-sectional view of the vortex tube applied to the air cooling drying apparatus according to another embodiment of the present invention.

5 is a schematic cross-sectional view of a venturi nozzle applied to an air-cooled drying apparatus according to another embodiment of the present invention.

6 is a system employing an air cooling drying apparatus according to an embodiment of the present invention.

Claims (13)

A lower chamber that rotates and accelerates hot and humid air introduced from the outside to remove moisture from the air and to dry it; An upper chamber through which the air is discharged; An EVA tube communicating with the upper and lower chambers, the tube being surrounded by a cooling tube, and cooling the dried air while the dried air flows into the upper chamber; And A plurality of heat pipes disposed around the EVA tube in the lower chamber and extending to the upper chamber, the plurality of heat pipes for cooling the air by heat exchange with the air, And cooling air introduced into the upper chamber through the eva tube cools and heats the heat pipe. The method of claim 1, And a plurality of vortex guide vanes disposed between the heat pipes to partition the heat pipes and direct the air adjacent the heat pipe to have a vortex. The method of claim 1, The heat pipe is an outer heat pipe, A plurality of inner heat pipes positioned between the eva tube and the outer heat pipe in the lower chamber and extending to the upper chamber and heat-exchanging with the air to cool the air; And Located in the lower chamber and disposed between the outer heat pipe and the inner heat pipe, the air flows from the bottom of the outer heat pipe to the top, and the air flowing upwards from the top to the bottom of the inner heat pipe. And an outer partition defining an air stream path directed thereto. The method of claim 3, wherein And an inner partition disposed between the eva tube and the inner heat pipe in the lower chamber, the inner partition having a plurality of inlets at the top to induce vortex around the eva tube. The method of claim 4, wherein And the inlets are arranged at equal intervals along the direction of the circumference surrounding the eva tube, and are formed such that air flows horizontally with a predetermined portion of the circumference. The method of claim 1, The upper portion of the lower chamber is formed in a cylindrical shape, the lower portion of the lower chamber is air-cooled drying apparatus is formed in a conical shape so as to increase the revolution speed of the air. The method of claim 1, The air cooling and drying apparatus further comprises a vortex tube for discharging the cooling air passing through the EVA tube into cold and hot air and supplying the cold air to the cooling tube. The method of claim 7, wherein And a venturi nozzle through which the refrigerant discharged from the cooling pipe and the discharged air from the upper chamber flow. And the venturi nozzle is configured to mix the hot air provided from the vortex tube with the refrigerant and the discharged air, and supply the mixed air to an external device. The method of claim 1, The cooling tube includes a CFC refrigerant, A refrigerant cooler cooling the CFC refrigerant; And Air cooling drying apparatus further comprises a case for receiving the upper chamber, the lower chamber. The method of claim 9, The refrigerant cooler is included in the case or air cooling drying apparatus is installed spaced apart from the case. compressor; A tank for storing air compressed from the compressor; And Including an air-cooled drying device for cooling and drying the air flowing from the tank, The air-cooled drying apparatus includes a lower chamber that rotates and accelerates hot and humid air introduced from the outside to remove moisture from the air and to dry it; An upper chamber through which the air is discharged; An EVA tube communicating with the upper and lower chambers, the tube being surrounded by a cooling tube, and cooling the dried air while the dried air flows into the upper chamber; And A plurality of heat pipes disposed around said eva tube in said lower chamber and extending to said upper chamber, said plurality of heat pipes heat-exchanging with said air to cool said air. The method of claim 11, The cooling air introduced into the upper chamber through the eva tube cools and exhausts the heat pipe. The method of claim 11, A storage tank for temporarily storing the air discharged from the upper chamber; And Control means for controlling the compressor on / off in accordance with the pressure in the storage tank.

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