KR20170005745A - Open typed system for air cooling - Google Patents

Open typed system for air cooling Download PDF

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Publication number
KR20170005745A
KR20170005745A KR1020150144156A KR20150144156A KR20170005745A KR 20170005745 A KR20170005745 A KR 20170005745A KR 1020150144156 A KR1020150144156 A KR 1020150144156A KR 20150144156 A KR20150144156 A KR 20150144156A KR 20170005745 A KR20170005745 A KR 20170005745A
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KR
South Korea
Prior art keywords
air
nozzle
compression
expansion
compression member
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KR1020150144156A
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Korean (ko)
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김남주
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김남주
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Publication of KR20170005745A publication Critical patent/KR20170005745A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0003—Exclusively-fluid systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/001—Compression cycle type

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

The present invention relates to an open-type air cooling system, comprising: a blower; and a main body having a compression unit which is compressed while outside air supplied from the blower is passed, a nozzle through which the compressed air passes while passing through the compression unit, and an expansion unit through which the air passing through the nozzle diffuses and expands.

Description

Open typed system for air cooling < RTI ID = 0.0 >

The present invention relates to a system for cooling air, and more particularly, to a system for cooling air efficiently by eliminating a complicated structure for circulating refrigerant and refrigerant by using the principle of the single thermal expansion and the Joule-Thomson principle To an open air cooling system.

Generally, in the air cooling system, a system is used in which a refrigerant is primarily cooled using a compression and expansion valve using a refrigerant, and a refrigerant is secondarily passed through an air fin tube to cool the air.

1, the air conditioner includes a compressor 10 for compressing a refrigerant, a condenser 11 for liquefying the refrigerant compressed through the compressor 10, a condenser 11 for condensing the refrigerant in the condenser 11, An expansion valve 12 for reducing the condensed refrigerant and an evaporator 13 for warming and humidifying the hot room air by using the refrigerant expanded through the expansion valve 12. In addition, there is a disadvantage in that a large amount of energy is consumed to operate the high-pressure compressor 10.

On the other hand, it is already known that the refrigerant used in this air conditioner is mainly used as the refrigerant gas, and the chemical substance emitted from the freon gas breaks the oxygen bond of the ozone and destroys the ozone layer in the stratosphere. In view of this, environment-friendly refrigerants have recently been introduced and used in many devices. However, this is also the reality that the refrigerant is prohibited from a certain point in time, or is expensive and has no market competitiveness because it is regulated by the Montreal Convention or the Kyoto Convention .

In other words, in order to realize a method of cooling the air while circulating the refrigerant through compression, condensation, expansion, evaporation, etc., it requires a lot of energy and electricity, requires complicated devices and expensive parts, There is a problem such as purchasing.

Korean Patent Publication No. 10-2004-0097582 (published on November 18, 2004) Korean Patent Publication No. 10-2009-0113809 (Published on November 2, 2009) Korean Patent No. 10-0310819 (Announcement of Dec. 17, 2001)

It is an object of the present invention, which is devised to overcome the above-described problems, to provide an apparatus and a method for supplying air of a surrounding ambient temperature by utilizing the principle of the Ji- And to provide an open air cooling system in which cooling air is discharged by repeating compression and expansion.

To achieve the above object, an open air cooling system according to the present invention includes: a blowing device; And a main body having a compression section that is compressed while the outside air supplied from the air blowing apparatus passes and an expansion section that diffuses and expands air that has passed through the compression section.

Here, the compressed portion is provided with an air compressing member for compressing air as it passes, and the air compressing member is a porous plug, a mesh type medium or a plurality of beads accommodated therein so as to compress air passing therethrough, And is in a mixed form.

In one specific embodiment, the main body includes: a first compression portion having a compression space into which air supplied to the air blowing device flows, and a first nozzle through which air in the compression space passes; A first air compression member into which air having passed through the first nozzle flows and is compressed, a second nozzle through which compressed air passes through the first air compression member, a first nozzle through which air passing through the second nozzle diffuses and expands, A compression / expansion unit having an expansion space and a third nozzle through which air in the first expansion space passes; A second compression unit including a second air compression member into which air having passed through the third nozzle flows and is compressed and a fourth nozzle through which compressed air passes while passing through the second air compression member; And an expansion part having a second inflation space through which the air that has passed through the inflow is diffused and expanded and then is discharged to the outside.

At least one of the first air compression member and the second air compression member may be a porous plug, a mesh type medium or a plurality of beads, or at least two of them may be mixed.

Further, the porous plug or mesh-like medium or bead is at least one of copper, copper alloy, aluminum, aluminum alloy, graphene, charcoal and activated carbon.

The first nozzle, the second nozzle, the third nozzle and the fourth nozzle are at least one perforated hole.

At least one of the first nozzle, the second nozzle, the third nozzle, and the fourth nozzle may be processed to have the same diameter on both sides or to be expanded in diameter so that air is diffused and jetted, Is reduced in diameter so as to be injected at a higher pressure.

Also, the compression / expansion part is divided into a partition wall in which the second nozzle is machined, and the first air compression member is arranged in one side space having a large area or a long side on the side, and the other side space So that the first expansion space is formed.

The fourth nozzle-side surface of the second expansion space is an inclined surface that is inclined at an angle smaller than the vertical angle on the side surface in order to prevent the generation of vortex of the air that has passed through the fourth nozzle.

And the cross-sectional area of the compression / expansion portion is wider than the cross-sectional area of the first compression portion so that the air having passed through the first nozzle diffuses and flows into the first air compression member, And the cross-sectional area of the expanding portion is in the form of at least one of the shapes wider than the cross-sectional area of the second compression portion so that air passing through the fourth nozzle diffuses.

As described above, according to the present invention, by circulating ambient air at room temperature and cooling it while repeatedly compressing and expanding, it is possible to lower the temperature of the surrounding space without using a specific gas or refrigerant like a conventional air conditioner.

Further, since only a general blowing fan or a turbo fan is driven instead of using a number of precise parts including a high-pressure compressor as in the past, the electric power can be saved remarkably, and the cost for maintenance due to simple parts and structure can be reduced There is an effect that can be.

Further, since ambient air is used without using refrigerant such as helium or freon which hinders the environment, there is an effect of being environmentally friendly without any generation of waste that damages the environment such as ozone layer destruction.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description, serve to further the understanding of the technical idea of the invention, Should not be interpreted.
Fig. 1 is a schematic view showing the basic structure of a general air conditioner.
Figure 2 is a general isenthalf diagram.
3 is a Ts diagram of a general refrigeration cycle.
4 is a schematic configuration diagram of a general refrigeration cycle.
5 is a diagram schematically illustrating a basic structure of a general Gipford-McMahon cycle.
6 is a graph relating to general thermal expansion.
7 is a diagram showing the basic principle of an open air cooling system according to the present invention.
Figure 8 is a cross-sectional side view of a preferred embodiment of an open air cooling system implemented on the basis of the basic principles of Figure 7;
FIG. 9 is a location-specific thermal distribution diagram showing the simulation results of the air cooling system of FIG.
FIG. 10 is a graph showing the temperature change by length in FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

<Configuration>

Figure 2 is a general isenthalf diagram. 3 is a T-s diagram of a general refrigeration cycle. 4 is a schematic configuration diagram of a general refrigeration cycle. 5 is a graph relating to general thermal expansion. FIG. 6 is a diagram schematically showing a basic structure of a general Gipford-Macmaon cycle.

The open air cooling system according to the present invention has a basic structure of the Gifford-Mcmahon cycle without Joule-Thomson (JT) refrigeration and displacer, Principle. Therefore, in order to understand the principle of the present invention, the principle of the refrigeration method and the thermal expansion of the line-Thomson will be briefly described.

First, the Joule-Thomson (J-T) freezing method is a method of obtaining a low temperature by using the line-Thomson effect generated when the high-pressure gas is freely expanded to low pressure. The J-T refrigerator using this method has a simple structure, and is free from mechanical vibration or friction, and can be stably operated for a long time. However, the J-T refrigerator internally generates a lot of entropy due to the irreversibility of the J-T expansion process. This is less efficient than a regenerative cryocooler using a reverse-brayton cycle refrigerator or a regenerative heat exchanger that expands the gas using an expander There is a disadvantage.

However, since JT refrigerators using mixed refrigerants as working fluids can greatly reduce the irreversibility that occurs internally, a well-designed mixed-refrigerant JT chiller can achieve sufficient efficiency to compete with the other types of chillers mentioned above have. Therefore, in the case of a refrigeration cycle in which a mechanical expander can not be used due to hydraulic problems arising from the expansion of the two-phase fluid, the mixed refrigerant JT refrigerator can be used in place of a retro-Brayton cycle or regenerative heat exchanger have. In addition, it is composed of other refrigerators and multi-stages in order to obtain very low temperature with a simple structure and is used in hybrid form. As such, J-T refrigerators are also used in various fields today.

Hereinafter, the development process of the J-T refrigerator will be described.

The JT refrigeration system is based on the Linde-Hamson cycle, a refrigeration cycle using the JT effect. Here, the JT effect refers to a phenomenon in which the temperature changes along an isenthalpic curve (see FIG. 2) when the actual gas expands freely while passing through an insulated narrow passage such as a capillary, an orifice, or the like. That is, except for helium (He), hydrogen (H 2 ) and neon (Ne), the temperature of most gases becomes low when they are freely expanded at high pressure or room temperature. Therefore, the lower the temperature, the larger the JT effect, so the lower the temperature through precooling, the larger the JT effect can be.

A refrigerating cycle (Linde-Hampson) cycle using the J-T effect can be represented by a T-s diagram as shown in FIG. 3, and a schematic diagram of the system of this cycle can be shown in FIG. In this cycle, the refrigerant at normal temperature and high pressure is precooled by heat exchange with low-temperature and low-pressure refrigerant that has undergone the expansion process while passing through the heat exchanger, and the precooled refrigerant is heat- After cooling the object to be cooled (③-> ④), it is used to pre-cool the supply refrigerant while passing through the heat exchanger (④-> ⑤). After that, the refrigerant exiting the heat exchanger is compressed again through the compressor and circulated (⑤-> ①) or discharged to the outside and discarded.

At this time, a system circulating through a compressor is called a closed cycle, and a system in which a gas is supplied from a high-pressure reservoir and is used for refrigeration and then discharged to the outside is called an open cycle. Here, the closed cycle is advantageous in that continuous use of gas can be maintained because a constant pressure ratio can be maintained because no gas is consumed because the gas charged in an appropriate amount is continuously circulated and used. However, there are many considerations such as the heat generated during the compression of the gas and the problem of the working fluid being dissolved in the oil, thus making the whole system large and complicated. On the other hand, since the open cycle does not use a compressor, it is advantageous in that it can be configured simply and in a small size even when the pressure ratio of high and low pressure is designed to be very large for rapid cooling. However, since the gas in the high-pressure reservoir is continuously consumed during the operation, it is difficult to maintain a constant pressure ratio for a long period of operation, and the refrigeration performance is gradually reduced.

Therefore, when the refrigeration cycle using the JT effect can not discharge the working fluid to the outside or is applied to a large-scale refrigeration system requiring continuous operation for a long time at a fixed position, it is configured as a closed cycle, Or in a small refrigeration system such as cooling of a moving device. Typical applications are closed circu- lar cycles such as large liquefaction plants, recondensers, and mixed refrigerant JT chillers that use active gas as a working fluid. The open cycle is used to cool small infrared sensors used in missiles and military equipment, Cooling of small electronic devices, probes for cryogenic surgery and the aerospace sector.

As shown in FIG. 5, the basic structure of the gefod-McMahon cycle is such that a warm piston and a cold piston are disposed on both sides and a porous regenerator And a compression space is provided between the heat exchanger and the warm piston, and an expansion space is provided between the heat exchanger and the cold piston.

Based on this basic structure, the principle is first to maintain the temperature of Ta in the state of the first ⓐ without compressing the internal gas.

Next, in the state where the warm piston is pressed, the inner gas is compressed and passes through the porous heat exchanger.

Next, when the cold piston is pressed back while the cold piston is backward, the gas inside is passed through the heat exchanger and compressed to the maximum.

Finally, when the cold piston rises back again, the gas expands to the maximum temperature T L and then falls.

Using helium gas for this principle can reach a cryogenic temperature of 4K. However, in order to realize this, it must be a closed cycle.

On the other hand, adiabatic expansion is a phenomenon in which the volume of a substance is increased without exchanging heat with the outside (see FIG. 6), and the three-phase substance (gas, liquid, solid) Increasing the temperature increases the volume. In other words, the temperature of the three-phase material is lowered when the material is expanded in the state of being insulated from the outside. Particularly, the thermal expansion is remarkable in the gas.

Expressing this expression, in the first law of thermodynamics,

ΔQ = ΔU + ΔW

ΔQ = ΔU + PΔV

(ΔQ: heat energy supplied to the gas, ΔU: increase in gas internal energy, ΔW: gas externally, P: pressure, ΔV: volume change)

(U: internal energy, n: mole number, R: gas constant, T: absolute temperature) is obtained by substituting the energy of ideal gas U = 3 / 2nRT,

0 = 3 / 2nR? T + P? V

Thus, when the volume expands (V> 0), the temperature decreases (ΔT <0)

The principle of this thermal expansion is applied to a cryocooler, and this cryocooler is made to reach a cryogenic temperature by thermally expanding helium or nitrogen.

Hereinafter, the open air cooling system according to the present invention will be described in detail.

7 is a diagram showing the basic principle of an open air cooling system according to the present invention. Figure 8 is a cross-sectional side view of a preferred embodiment of an open air cooling system implemented on the basis of the basic principles of Figure 7; FIG. 9 is a location-specific thermal distribution diagram showing the simulation results of the air cooling system of FIG. FIG. 10 is a graph showing the temperature change by length in FIG.

The basic principle of the open air cooling system according to the present invention, which is created based on the above-described basic structure of the line-Thomson refrigeration system and the Gifford-Mcmahon cycle and the principle of the monotonic expansion, Air is forcedly injected from one side to the surrounding room while being passed through the heat exchanger, and the compressed air is rapidly expanded to be cooled, and then discharged to the other side. In particular, the air cooling system of the present invention is characterized in that surrounding air is used without using a refrigerant of a specific gas such as helium or Freon, and air of normal temperature is introduced from one side and air cooled to the other side is discharged. Structure. It is also possible to cool the air in the structure excluded from the displacer that moves with the piston in the GipoD-McMahon cycle.

The open air cooling system of the present invention, which is manufactured on the basis of these basic principles and features, comprises a main body 200 having a predetermined length as shown in FIG. 8, and a blower 100 mounted on the main body 200.

The air blowing apparatus 100 is mounted on one side of the main body 200 so as to supply ambient air at room temperature to the main body 200. The air blowing apparatus 100 may be a normal general fan or a turbo fan capable of blowing more strongly. The air blowing apparatus 100 blows ambient air in an atmospheric pressure state and supplies the ambient air to the main body 200. At this time, when the surrounding air is strongly blown out to the blower 100, the pressure of the air changes to a higher pressure than the pressure of the introduced air. In other words, when a conventional blower fan is operated, the ambient air flows at a higher air velocity than the surrounding air, and changes to a higher pressure than the ambient air. The air blowing apparatus 100 utilizing such a phenomenon can supply the surrounding air to the main body 200 at a slightly higher pressure than the surrounding air without any additional operation. However, since the temperature of the cooling air finally discharged through the main body 200 can be further lowered as the surrounding air is supplied more strongly, it is preferable to use a turbo fan, and a blower stronger than the turbo fan may be used. To this end, the air blowing device 100 may be directly connected to the main body 200, so that the high-pressure air discharged from the air blowing device 100 may be supplied to the main body 200. It is also possible to adjust the length of the connection pipe between the air blowing device 100 and the main body 200 to adjust the pressure of air discharged from the air blowing device 100 to a desired range and supply the air to the main body 200.

The main body 200 comprises a compression unit for compressing the air supplied from the air blowing apparatus 100, a nozzle through which compressed air passes through the compression unit, and an expanding unit for expanding air that has passed through the nozzle. In order to further improve the cooling efficiency, the main body 200 is preferably made of an insulating material in order to block heat transfer inside and outside. Here, a porous plug is disposed in the compression unit, or a mesh-type medium or a plurality of beads are accommodated in the compression unit to compress the introduced air. At this time, the porous plug or mesh-like medium or bead can be manufactured using at least one of copper, copper alloy, aluminum, aluminum alloy, graphene, charcoal and activated carbon. In addition, the porous plug or mesh type medium or beads may be disposed singly or in combination, and these may be the first air compression member 221 or the second air compression member 231 described later.

Further, the nozzle is arranged between the porous plug and the expanding portion, and configured to discharge the compressed air through the porous plug to the expanding portion.

The expanding portion has a large expansion space so that it can expand while rapidly diffusing the air discharged from the nozzle. Each of the compression unit, the nozzle and the expansion unit may be arranged in sequence, or a plurality of compression units, a nozzle, and an expansion unit may be arranged in connection with each other.

Hereinafter, the main body 200 will be described in detail based on the embodiment shown in FIG.

The main body 200 includes a first compression unit 210, a compression / expansion unit 220, a second compression unit 230, and an expansion unit 240. It is preferable that the main body 200 is made of a circular tube having a circular cross section so that the flow of air does not occur as much as possible.

The first compression unit 210 includes a compression space 211 for supplying the air supplied from the blowing apparatus 100 to the first nozzle 212 and a compression / And a first nozzle 212 for discharging air to the nozzle 220.

First, in the compression space 211, since a small amount of air flowing from the air blowing device 100 passes through the first nozzle 212, the air is compressed at a constant rate while staying temporarily. The sectional area of the first compression portion 210 or the compression space 211 is approximately the same as or similar to the sectional area of the discharge port of the fan apparatus 100. The cross sectional area of the first compression space 211 may be smaller than the cross sectional area of the first air compression member 221 and the first expansion space 224 and may be equal to or smaller than the cross sectional area of the second air compression member 231 May be similar or larger.

Further, the first nozzle 212 is formed as one or more perforated holes between the compression space 211 and the first air compression member 221 of the compression / expansion unit 220 described later. The first nozzle 212 can calculate the amount of air passing through the first air compression member 221 per hour and determine the diameter and the number of the air. That is, the diameters and the number of the first nozzles 212 are determined by the amount of air supplied from the air blowing apparatus 100, the amount of air supplied to the first air compression member 221, The pressure of the air to be taken into account. The first nozzle 212 is formed so that the diameter of the first air compression member 221 side portion is smaller than the diameter of the compression space 211 so that air in the compression space 211 can be diffused and passed through the first air compression member 221. [ Side than a diameter of a part on the side of the side wall. Of course, the diameters of both side portions may be processed into the same shape.

The compression / expansion unit 220 includes a first air compression member 221, a partition 222, a second nozzle 223, a first expansion space 224, and a third nozzle 225. In the compression / expansion part 220, most of the internal space divided by the partition wall 222 provided therein is filled with the first air compression member 221, and the remaining part is made into the first expansion space 224. The sectional area of the first air compression member 221 or the first expansion space 224 is larger than the sectional area of the compression space 211 and the second air compression member 231 and is equal to the sectional area of the second expansion space 241 Or similar. The side length of the compression / expansion part 220 may be longer than the side length of the first compression part 210 and may be shorter than the side length of the second compression part 230, May be the same or similar to the side length.

The first air compression member 221 is a medium for primarily compressing the air introduced through the first nozzle 212 and is disposed in the most space partitioned by the partition 222 in the compression / expansion unit 220 . The first air compression member 221 may be a porous plug, a mesh-like medium, or a plurality of beads may be accommodated. In addition, conventional devices and members capable of compressing air while passing through them may be used . Here, the diameter of the mesh or the diameter of the beads may be variously varied from a size smaller than a few micrometers to a size of a few tens of millimeters depending on the amount of air flowing through the first air compression member 221 and / .

The size of the first air compression member 221 occupying the entire space of the compression / expansion unit 220 is determined by the air pressure expanded in the first expansion space 224 and the air pressure expanded in the second air compression member 231 Of the air pressure. In other words, the size of the first inflation space 224 and the second air compression member 231 can be set in consideration of the temperature of the finally cooled air in the second inflation space 241. The above-mentioned size may be an area or a side length.

The partition 222 is provided by dividing the compression / expansion part 220 into a most space filled with the first air compression member 221 and a part of the space used as the first expansion space 224.

At least one of the second nozzles 223 is formed in the partition 222 so as to allow the first compressed air passing through the first air compression member 221 to flow into the first expansion space 224, Process in the form of a hole. The second nozzles 223 may be machined to have the same diameter at both ends and be inclined so as to have the same diameter as the first nozzles 212. The diameter and the number of the second nozzles 223 are set so that the pressure of the air passing through the first air compression member 221, the pressure of the air staying in the first expansion space 224, The amount and pressure of the air passing through the air-fuel ratio sensor, and the like.

The first expansion space 224 is a space compressed by the first air compression member 221 and expanding by allowing the air that has passed through the second nozzle 223 to be rapidly diffused. That is, the air having passed through the first air compression member 221 may be firstly cooled while rapidly diffusing and expanding in the first expansion space 224, and the cooling temperature at this time may not be greatly different from the room temperature. The air that has passed through the first air compression member 221 is cooled in the first expansion space 224 but is immediately introduced into the second air compression member 231 in a state in which space and time for sufficiently cooling are not provided , It is possible to see a phenomenon that the cooling returns to the previous temperature after progressing as shown in FIG. The size of the first expansion space 224 can be set in proportion to the size of the second air compression member 231 and the second expansion space 241 in consideration of the temperature of the air cooled in the second expansion space 241 have. For example, in the compression / expansion part 200, the first expansion space 224 may be provided in a part of the space except the most space where the first air compression member 221 is disposed. This is because the function of the preliminary expansion is given priority over the cooling of the air. At this time, the size may be an area or a side length.

The third nozzle 225 may have one or more than two nozzles 225 so that the air in the first expansion space 224 can pass through the second air compression member 231 of the second compression unit 230, It is processed into perforated holes. The third nozzle 225 may be formed in the same shape as the second nozzle 223 at both ends thereof or may be inclined so as to have the same diameter as the first nozzle 212. The diameter and the number of the third nozzles 225 are determined by the cross sectional area of the second air compression member 231, the pressure of the air in the first expansion space 224 and the air flowing into the second air compression member 231 And the like. Here, the diameters of the second nozzle 223 and the third nozzle 225 may be the same or different.

Meanwhile, the second compression unit 230 includes a second air compression member 231 and a fourth nozzle 232. The cross-sectional area of the second compression portion 230 is narrower than the cross-sectional area of the first compression portion 210, and the length on the side surface thereof may be longer than the length of the compression / expansion portion 220.

Here, the second air compression member 231 is a medium for finally compressing the air introduced through the third nozzle 225. The second air compression member 231 may be disposed to occupy the internal space of the second compression unit 230. For example, the second air compression member 231 may be disposed in the form of a porous plug, a mesh medium, In addition, conventional power devices and members that can be compressed while passing air can be used. The size, the length, and the area of the second air compression member 231 are determined in consideration of the temperature of air that is expanded and cooled in the second expansion space 241. The cross sectional area of the second air compression member 231 may be narrower than the cross sectional area of the first air compression member 221 and the length on the lateral side may be longer than the lateral length of the second air compression member 231 have. This is for the purpose of directing the maximum compression of the air, such as compressing the flowing air more than the first air compression member 221.

In addition, the fourth nozzle 232 is punched into one or two or more holes so that the air of the second air compression member 231 can pass through the second expansion space 241. The fourth nozzle 232 may be machined to have the same diameter as the first nozzle 212 or may be machined to have the same diameter at both ends as the second and third nozzles 223 and 225. 8, the fourth nozzle 232 may be inclined such that the diameter of the second expansion chamber 241 side portion is smaller than that of the second air compression member 231 side portion. This is because compressed air passing through the second air compression member 231 is supplied to the second expansion space 241 and injected at a higher pressure to cool down to a lower temperature upon diffusion and expansion.

Meanwhile, the expansion unit 240 includes a second expansion space 241 so that air passing through the fourth nozzle 232 can be expanded while being diffused. Sectional area and lateral length of the expansion portion 240 or the second expansion space 241 may be the same as or similar to the compression / expansion portion 220 or the first expansion space 224, and the first compression portion 210 Or the compression space 211, the second compression unit 230, or the second air compression member 231, respectively. In the second expansion space 241, the air that is firstly expanded in the first expansion space 224 is compressed again by the second air compression member 231, and then is rapidly diffused and expanded while being cooled. The cooled air in the second expansion space (241) is discharged to the outside. Here, one surface of the second expansion space 241 on the side of the fourth nozzle 232 has an inclined surface 242 so that air discharged from the fourth nozzle 232 is diffused and vortex is not generated. The angle of this slope 242 is less than 90 degrees on the side, and may be greater than 60 degrees. If the angle is greater than 90 °, vortexes tend to occur. If the angle is less than 60 °, the diffusion and expansion degree may be lowered, resulting in lower cooling efficiency.

In order to further lower the temperature of the cooled air, at least one of the compression / expansion unit 220 and the second compression unit 230 may be installed. Alternatively, the size, the area, or the degree of porosity may be adjusted to further increase the air compressive force in the first air compression member 221 or the second air compression member 231. Alternatively, the diameter of the second nozzle 223 or the fourth nozzle 232 may be adjusted to further increase the degree of diffusion and expansion of the air discharged from the first air compression member 221 or the second air compression member 231 It is possible.

As a result of the simulation of the open air cooling system according to the present invention constructed as described above, the temperature distribution of the finally discharged air is significantly lower than the temperature of the introduced air as shown in FIG. That is, the ambient temperature at room temperature supplied from the air blowing apparatus 100 is finally discharged into the second expansion space 241, and the temperature can be clearly lowered. In contrast, as shown in FIG. 10, the air passing through the second air compression member 231 is suddenly lowered, and then the second expansion space 241 is slightly raised while being in contact with the outside air. Of course, it is natural that the temperature of the cooling air finally discharged in the second expansion space 241 is discharged to a much lower temperature than the external temperature.

As described above, those skilled in the art will appreciate that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the appended claims, rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and equivalents of the claims are to be construed as being included within the scope of the present invention do.

100: blower
200:
210: first compression section
211: compression space
212: first nozzle
220: compression / expansion part
221: first air compression member
222:
223: Second nozzle
224: first expansion space
225: third nozzle
230: second compression section
231: second air compression member
232: fourth nozzle
240: Expansion part
241: second inflation space
242: sloping surface.

Claims (10)

And a main body (200) having a compression section that is compressed while the outside air supplied from the outside air blowing apparatus (100) passes, and an expansion section where the air that has passed through the compression section spreads and expands.
The method according to claim 1,
Wherein the compression section includes an air compression member for compressing air as it passes,
Wherein the air compression member is a porous plug, a mesh-type medium or a plurality of beads is accommodated in order to compress air passing therethrough, or at least two of them are mixed.
The method according to claim 1,
The main body 200 includes a first compression unit 210 having a compression space 211 into which air supplied to the air blowing apparatus 100 is introduced and a first nozzle 212 through which air in the compression space 211 passes, ),
A first air compression member 221 through which the air having passed through the first nozzle 212 flows and is compressed, a second nozzle 223 through which compressed air passes through the first air compression member 221, Expanding portion 220 having a first expansion space 224 through which air that has passed through the second nozzle 223 diffuses and expands and a third nozzle 225 through which air in the first expansion space 224 passes, ),
A second air compression member 231 through which the air having passed through the third nozzle 225 flows and is compressed and a fourth nozzle 232 through which compressed air passes through the second air compression member 231, A second compression unit 230,
And an expansion unit (240) having a second expansion space (241) through which the air that has passed through the fourth nozzle (232) flows and diffuses and expands and then is discharged to the outside.
The method of claim 3,
At least one of the first air compression member 221 and the second air compression member 231 may be a porous plug, a mesh type medium or a plurality of beads may be accommodated, or at least two of them may be mixed Open air cooling system.
The method according to claim 2 or 4,
Wherein the porous plug or mesh medium or bead is at least one of copper, copper alloy, aluminum, aluminum alloy, graphene, charcoal and activated carbon.
The method of claim 3,
Wherein the first nozzle (212), the second nozzle (223), the third nozzle (225) and the fourth nozzle (232) are at least one perforated hole.
The method according to claim 6,
At least one of the first nozzle 212, the second nozzle 223, the third nozzle 225 and the fourth nozzle 232 may be formed so that both sides thereof have the same diameter, An open air cooling system in which the diameter is machined to an expanded form or the diameter is reduced so that the incoming air is injected at a higher pressure.
The method of claim 3,
The compression / expansion unit 220 is partitioned by the partition wall 222 in which the second nozzle 223 is formed, and the first air compression member 221 is disposed in a space having a large area or a long side face, And the other side space having a narrow area or a short side length is a first expansion space (224).
The method of claim 3,
One surface of the second expansion space 241 on the side of the fourth nozzle 232 is an inclined surface 242 inclined at an angle smaller than a vertical angle on the side surface in order to prevent generation of vortex of air passing through the fourth nozzle 232 An open air cooling system.
10. The method according to any one of claims 3, 4, 6, 7, 8, 9,
The cross-sectional area of the compression / expansion part 220 may be larger than the cross-sectional area of the first compression part 210 so that the air having passed through the first nozzle 212 is diffused and introduced into the first air compression member 221, The cross sectional area of the second compression portion 230 is narrower than the cross sectional area of the compression / expansion portion 220 to recompress air passing through the third nozzle 225, 4 nozzles 232. The open air cooling system of claim 1, wherein the at least one of the first and second nozzles has a width that is less than the width of the second compressed portion.
KR1020150144156A 2015-07-06 2015-10-15 Open typed system for air cooling KR20170005745A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU199366U1 (en) * 2020-03-12 2020-08-28 Сергей Александрович Гордин Joule-Thompson effect air conditioner indoor unit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000021120A (en) 1998-09-25 2000-04-15 윤덕용 Ultra low temperature freezer using reverse brayton cycle
KR20040097582A (en) 2003-05-12 2004-11-18 정규진 Aaccumulate cold type air Refrigerating machines
KR20090113809A (en) 2009-10-13 2009-11-02 정방균 Air cooler

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000021120A (en) 1998-09-25 2000-04-15 윤덕용 Ultra low temperature freezer using reverse brayton cycle
KR20040097582A (en) 2003-05-12 2004-11-18 정규진 Aaccumulate cold type air Refrigerating machines
KR20090113809A (en) 2009-10-13 2009-11-02 정방균 Air cooler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU199366U1 (en) * 2020-03-12 2020-08-28 Сергей Александрович Гордин Joule-Thompson effect air conditioner indoor unit

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