U.S. patent application number 17/428901 was filed with the patent office on 2022-09-29 for vortex tube having at least two generators.
The applicant listed for this patent is TESLLON INC.. Invention is credited to Sang Phil LEE.
Application Number | 20220307734 17/428901 |
Document ID | / |
Family ID | 1000006432277 |
Filed Date | 2022-09-29 |
United States Patent
Application |
20220307734 |
Kind Code |
A1 |
LEE; Sang Phil |
September 29, 2022 |
VORTEX TUBE HAVING AT LEAST TWO GENERATORS
Abstract
A vortex tube according to an embodiment of the present
disclosure includes a cold and heat separation chamber; a cold air
outlet provided at an end of the cold and heat separation chamber,
a generator provided between the cold air outlet and the cold and
heat separation chamber, a hot air outlet provided at another end
of the cold and heat separation chamber and including a hot air
adjusting valve, and an outer tube cover having a compressed air
inlet and surrounding the cold and heat separation chamber at a
predetermined gap while blocking the cold and heat separation
chamber at an outside thereof, so that introduced compressed air
can be supplied into the generator, wherein the compressed air
flowing through the compressed air inlet generates rapid rotating
wind by passing through the generator to be moved into the cold and
heat separation chamber to separate cold and heat from each
other.
Inventors: |
LEE; Sang Phil;
(Gyeongsangbuk-do, KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
TESLLON INC. |
Daegu |
|
KR |
|
|
Family ID: |
1000006432277 |
Appl. No.: |
17/428901 |
Filed: |
October 27, 2020 |
PCT Filed: |
October 27, 2020 |
PCT NO: |
PCT/KR2020/014715 |
371 Date: |
August 5, 2021 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F25B 9/04 20130101 |
International
Class: |
F25B 9/04 20060101
F25B009/04 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 24, 2020 |
KR |
10-2020-0106553 |
Claims
1. A vortex tube comprising: a cold and heat separation chamber; a
cold air outlet provided at an end of the cold and heat separation
chamber; a generator provided between the cold air outlet and the
cold and heat separation chamber; a hot air outlet provided at
another end of the cold and heat separation chamber and including a
hot air adjusting valve; and an outer tube cover comprising a
compressed air inlet and surrounding the cold and heat separation
chamber at a predetermined gap while blocking the cold and heat
separation chamber at an outside thereof, so that introduced
compressed air can be supplied into the generator, wherein the
compressed air flowing through the compressed air inlet generates
rapid rotating wind by passing through the generator to be moved
into the cold and heat separation chamber to separate cold and heat
from each other.
2. The vortex tube of claim 1, wherein a counterflow prevention cap
is inserted in the hot air outlet including the hot air adjusting
valve.
3. A vortex tube comprising: a cold and heat separation chamber; a
cold air outlet provided at an end of the cold and heat separation
chamber; a first generator, a sleeve, and a second generator
provided between the cold air outlet and the cold and heat
separation chamber; a compressed air inlet provided at a portion
close to the first generator and the second generator and
configured to supply compressed air into the first generator and
the second generator; and a hot air outlet provided at another end
of the cold and heat separation chamber and including a hot air
adjusting valve, wherein an outlet of the sleeve has a diameter
larger than a diameter of an entrance of the cold air outlet and
smaller than an inner diameter of each of the generators.
4. The vortex tube of claim 3, wherein the sleeve is inclined such
that an entrance of the sleeve has a diameter larger than the
diameter of the outlet of the sleeve.
5. The vortex tube of claim 3, wherein a diameter of an entrance of
the sleeve coincides with the inner diameter of the first
generator.
6. The vortex tube of claim 5, wherein the diameter of the outlet
of the sleeve satisfies the following equation. [diameter of
entrance of cold air outlet+{(inner diameter of cold and heat
separation chamber-diameter of entrance of cold air
outlet)/2.+-.(inner diameter of cold and heat separation
chamber-diameter of entrance of cold air outlet)/4}]
7. The vortex tube of claim 3, further comprising: a third
generator in addition to the second generator.
8. The vortex tube of claim 7, further comprising: a second sleeve
in which the third generator is provided, wherein a passage in the
second sleeve is inclined such that an entrance of the second
sleeve has a diameter larger than a diameter of an outlet thereof.
Description
CROSS REFERENCE TO RELATED APPLICATIONS AND CLAIM OF PRIORITY
[0001] This application claims benefit under 35 U.S.C. 119(e), 120,
121, or 365(c), and is a National Stage entry from International
Application No. PCT/KR2020/014715, filed Oct. 27, 2020, which
claims priority to the benefit of Korean Patent Application No.
10-2020-0106553 filed in the Korean Intellectual Property Office on
Aug. 24, 2020, the entire contents of which are incorporated herein
by reference.
BACKGROUND
1. Technical Field
[0002] The present disclosure relates to a vortex tube and, more
particularly, to a vortex tube having at least two generators to
have improved performance when compared to a conventional vortex
tube.
2. Background Art
[0003] The vortex tube (which is also called Ranque-Hilsch vortex
tube) separates compressed air into a hot flow and a cold flow.
When the compressed air is injected toward a swirl chamber, the air
is accelerated and rotated at a high velocity. Only air rotated
outside the tube is discharged from the tube due to a conical
nozzle at the tube. The rest of the compressed air not discharged
from the tube receives a force returning the air in the opposite
direction and is returned to generate a vortex inside an outer
vortex.
[0004] In other words, the vortex tube is a revolutionary cooling
device that separates the supplied general compressed air (3-10
kg/cm.sup.2) into the hot and cold flows without electricity or any
chemicals. When the compressed air is supplied into the vortex tube
through a pipe, the compressed air is primarily supplied into the
swirl chamber and is rotated at a high velocity of about 1,000,000
RPM. When the rotated air (first vortex) is moved toward a hot air
outlet, a portion of the air is discharged through the hot air
outlet (30.degree. C..about.90.degree. C.) by an adjusting valve
and the rest of the air is returned from the adjusting valve to
generate a second vortex and then is discharged through a cold air
outlet. A flow of the second vortex loses heat as the second vortex
passes through a lower pressure area inside the flow of the first
vortex and is moved toward the cold air outlet.
[0005] The cold air discharged through the cold air outlet of the
vortex tube is used in various industries. For example, the cold
air is applied in various field, such as machine operation cooling,
CNC milling cutting cooling, grinding, cutting, drill cooling,
welding operation cooling in a dockyard, electronic product
assembly cooling, and local cooling in a semiconductor factory.
[0006] The vortex tube has various advantages in addition to not
requiring a refrigerant. For example, the vortex tube has
advantages, such as improvement of work efficiency, being
maintenance-free, clean cooling, tool life extension, easy
maintenance, instantaneous cooling, etc.
[0007] Recently, a rapid cooling function is increasingly used in
combination with a precision machine or an electronic device by
using cold of the vortex tube. In this case, the temperature of the
discharged cold becomes an important factor influencing
performance.
[0008] However, although the vortex tube has been developed for
over 150 years and has various uses, there have not been many
attempts to improve the performance of the product by changing the
structure thereof. The above problem is caused from reasons such
that the vortex tube is not composed of many elements and the
principle thereof is still not clearly known.
SUMMARY
[0009] Accordingly, the present disclosure has been made keeping in
mind the above problems occurring in the related art, and an
objective of the present disclosure is to provide a vortex tube
configured to lower the temperature of discharged cold air, so that
the efficiency of rapid cooling required for precision machinery or
electronic devices among functions of the vortex tube is improved
and precision operation without causing environmental pollution is
possible.
[0010] Another objective of the present disclosure is to propose a
vortex tube having at least two generators generating rapid
rotating wind, the generators being partitioned by a sleeve, to
lower the temperature of discharged cold air and thus to
significantly improve the efficiency of rapid cooling.
[0011] A further objective of the present disclosure is to provide
a vortex tube having an outer tube cover with a compressed air
inlet surrounding a cold and heat separation chamber to facilitate
storage and usage and to pre-cooling the cold and heat separation
chamber with introduced compressed air.
[0012] A further objective of the present disclosure is to provide
a vortex tube having a counterflow prevention cap inserted in a
temperature adjusting valve in preparation for difficulty of
discharging hot air to the outside of the vortex tube when the
vortex tube is in an area where outside pressure is high.
[0013] An objective of the present disclosure is not limited to the
above-mentioned objectives, and other objectives not mentioned will
be clearly understood by one of ordinary skill in the art to which
the present disclosure belongs (hereinbelow, `those skilled in the
art`) in the following description.
[0014] In order to accomplish the above objective and to perform
characteristic features of the present disclosure, the present
disclosure provides a vortex tube configured as follows.
[0015] The vortex tube includes: a cold and heat separation
chamber; a cold air outlet provided at an end of the cold and heat
separation chamber; a generator provided between the cold air
outlet and the cold and heat separation chamber; a hot air outlet
provided at another end of the cold and heat separation chamber and
including a hot air adjusting valve; and an outer tube cover having
a compressed air inlet and surrounding the cold and heat separation
chamber at a predetermined gap while blocking the cold and heat
separation chamber at an outside thereof, so that introduced
compressed air may be supplied into the generator, wherein the
compressed air flowing through the compressed air inlet generates
rapid rotating wind by passing through the generator to be moved
into the cold and heat separation chamber to separate cold and heat
from each other.
[0016] According to the above embodiment of the present disclosure,
a counterflow prevention cap may be inserted in the hot air outlet
including the hot air adjusting valve.
[0017] According to another embodiment of the present disclosure, a
vortex tube may include: a cold and heat separation chamber; a cold
air outlet provided at an end of the cold and heat separation
chamber; a first generator, a sleeve, and a second generator
provided between the cold air outlet and the cold and heat
separation chamber; a compressed air inlet provided at a portion
close to the first generator and the second generator and
configured to supply compressed air into the first generator and
the second generator; and a hot air outlet provided at another end
of the cold and heat separation chamber and including a hot air
adjusting valve, wherein an outlet of the sleeve may have a
diameter larger than a diameter of an entrance of the cold air
outlet and smaller than an inner diameter of each of the
generators.
[0018] In addition, the vortex tube may include a third generator
in addition to the second generator.
[0019] According to the present disclosure, the vortex tube is
configured to lower the temperature of discharged cold air so that
the efficiency of rapid cooling required for precision machinery or
electronic devices among functions of the vortex tube is improved
and precision operation without causing environmental pollution can
be realized. Accordingly, since the vortex tube of the present
disclosure includes at least two generators generating rapid
rotating wind, which are partitioned by the sleeve, to lower the
temperature of discharged cold, the efficiency of the rapid cooling
can be significantly improved.
[0020] The vortex tube of the present disclosure includes the outer
tube cover with the compressed air inlet surrounding the cold and
heat separation chamber. Accordingly, storage and usage of the
vortex tube can be easier and the cold and heat separation chamber
can be pre-cooled with the introduced compressed air.
[0021] The vortex tube of the present disclosure includes the
counterflow prevention cap inserted in the temperature adjusting
valve. Accordingly, difficulty for hot air to be discharged from
the outside of the vortex tube occurring when the vortex tube is in
the area with high outside pressure can be prevented.
[0022] Effects of the present disclosure are not limited to the
above-mentioned effects, and other effects not mentioned are
clearly recognized by those skilled in the art in the following
description.
BRIEF DESCRIPTION OF THE DRAWINGS
[0023] FIG. 1 is a view showing a conventional vortex tube in
contrast to the present disclosure.
[0024] FIG. 2 is a view showing a vortex tube having two generators
according to a first embodiment of the present disclosure.
[0025] FIG. 3 is a view showing a vortex tube having two generators
according to a second embodiment of the present disclosure.
[0026] FIG. 4 is a view showing a vortex tube having two generators
according to a third embodiment of the present disclosure.
[0027] FIG. 5 is an exploded-perspective view showing the vortex
tube of the third embodiment shown in FIG. 4.
[0028] FIG. 6 is a view showing a vortex tube having three
generators according to a fourth embodiment of the present
disclosure.
[0029] FIG. 7 is a view showing a hot air adjusting part of the
above embodiments, the hot air adjusting part having a counterflow
prevention cap inserted therein to efficiently discharge hot
air.
DETAILED DESCRIPTION
[0030] In the following description, "cold ratio" is the ratio of
the amount of air exiting a cold side to the amount of supplied
compressed air. When the cold ratio is 40%, the ratio of the amount
of the compressed air consumption to the amount of cold side
discharged air is 100:40.
[0031] "Rapid rotating wind" means rotating air generated such that
compressed air is supplied into a vortex tube through a pipe and is
primarily supplied into a vortex (swirl) chamber to be rotated at
an ultra-high velocity of about 1,000,000 RPM. The rapid rotating
wind is referred to as "vortex" or "cyclone". These terms have the
same meaning.
[0032] In the following description, the structural or functional
description specified to exemplary embodiments according to the
concept of the present disclosure is intended to describe the
exemplary embodiments, so it should be understood that the present
disclosure may be variously embodied.
[0033] It should be understood that the exemplary embodiments
according to the concept of the present disclosure are not limited
to the embodiments which will be described hereinbelow with
reference to the accompanying drawings, but various modifications,
equivalents, additions and substitutions are possible, without
departing from the scope and spirit of the invention.
[0034] It will be understood that, although the terms first,
second, etc. may be used herein to describe various elements, these
elements should not be limited by these terms. These terms are only
used to distinguish one element, from another element. For
instance, a first element discussed below could be termed a second
element without departing from the teachings of the present
disclosure. Similarly, the second element could also be termed the
first element.
[0035] It will be understood that when an element is referred to as
being "coupled" or "connected" to another element, it can be
directly coupled or connected to the other element or intervening
elements may be present therebetween.
[0036] In contrast, it should be understood that when an element is
referred to as being "directly coupled" or "directly connected" to
another element, there are no intervening elements present.
[0037] The terms used herein to describe a relationship between
elements, for example, "between", "directly between", "adjacent",
or "directly adjacent" should be interpreted in the same manner as
those described above.
[0038] In the following description, the same reference numerals
will be used to refer to the same or like elements. Meanwhile, the
terms used herein to describe a relationship between elements, for
example, "between", "directly between", "adjacent", or "directly
adjacent" should be interpreted in the same manner as those
described above.
[0039] An element expressed in a singular form in this
specification may be plural elements unless it is necessarily
singular in the context. The terms "comprise" and/or "comprising"
means inclusion of a shape, number, process, operations, member,
element, and/or a group of those, but do not mean exclusion of or
denial of addition of another shape, number, process, operation,
element, and/or a group of those.
[0040] Hereinbelow, embodiments of the present disclosure will be
described in detail with reference to accompanying drawings.
[0041] FIG. 1 is a view showing a conventional vortex tube in
contrast to the present disclosure. Furthermore, FIG. 1 is a
comparative example in contrast to the embodiments shown in FIGS.
2, 3, and 4 disclosed in the present disclosure.
[0042] Figures shown in the drawings represent an actual device
produced and tested by the applicant in the drawings, and there is
one generator 3000, and six generator wings 3010 are provided for a
purpose of the generator. Each of six air intake grooves 3020 has a
size of height of 0.3 and width of 0.5 mm. An entrance 305 of the
cold air outlet has a diameter of 2.2 mm.
[0043] FIGS. 2 and 3 have a difference of having two generators
(300 and 400) and a sleeve (500, 510) located between the two
generators in comparison with FIG. 1. In case of the generator
wings 301, 401 provided for the generator to be serve as the
generator, the first generator 300 has three generator wings 301
and the second generator 400 has three generator wings 401.
[0044] In case of air intake grooves 302, 402 formed between the
generator wings 301, 401, the first generator 300, 310 has three
air intake grooves 302, and the second generators 400 has three air
intake grooves 402. Each of the air intake grooves 302, 402 has the
same size of height of 0.3 and width of 0.5 mm as the air intake
grooves provided in the vortex tube shown in FIG. 1.
[0045] The reason for limiting the numerical value of the vortex
tube as described above is to accurately compare an effect by
testing the vortex tube of the present disclosure in the same state
as the related art shown in FIG. 1. However, in actual industrial
application, those skilled in the art may change the number, size,
etc. as much as needed on the basis of the operating principle of
the vortex tube.
[0046] The reason, the number of the air intake grooves in FIG. 1
is six; FIGS. 2 and 3 respectively have the total six air intake
grooves; and all the air intake grooves have the same size, is to
control the volume of compressed air, so that the same volume of
the compressed air supplied to operate and measure the vortex tube
in the same condition. In this way, the effect of the invention
shown in FIGS. 2 and 3 may be objectively measured. In FIGS. 1 to
3, the entrance of the cold air outlet has a diameter of 2.2 m.
[0047] A thickness of the sleeve 510 in FIG. 2 is not a sensitive
problem. However, a diameter of a sleeve entrance 505 and a
diameter of a sleeve outlet 507 are the same. Therefore, it is
preferable that a rapid rotating wind diameter 307 of the first
generator 300 has the same diameter as the diameter of the sleeve
entrance 505. In FIG. 2, the diameter of the sleeve entrance 505 is
4.5 mm.
[0048] In FIG. 3, a thickness of the sleeve 500 affects the
inclination of an inclined portion of the sleeve so as to affect
the effectiveness of the vortex tube. Therefore, those skilled in
the art may change the number, size, etc. as needed on the basis of
the operating principle of the vortex tube. In the embodiment shown
in FIG. 3, the sleeve with a thickness of 2 mm is used.
[0049] A point in the above configuration is the relationship
between a diameter of an entrance 305 of a cold air outlet, an
inner diameter of a cold and heat separation chamber 210, diameters
of the sleeve entrance 505 and the sleeve outlet 507. It is
preferable that the rapid rotating wind diameter 307 of the first
generator 300 may be slightly different from the diameter of the
sleeve entrance 505, but be equal to the diameter of the sleeve
entrance 505.
[0050] The diameter of the sleeve entrance 505 may be changed as
needed, but the diameter thereof is fundamentally formed equal to
or larger than the diameter of the sleeve outlet 507. In addition,
the diameter of the sleeve outlet 507 is fundamentally formed
larger than the diameter than the diameter of the entrance 305 of
the cold air outlet and smaller than the inner diameter of the cold
and heat separation chamber 210.
[0051] The diameter of the sleeve outlet 507 may be changed as
needed on the premise that the first generator 300, 320 and the
second generator 400 generate rapid rotating wind on the basis of a
value obtained by adding the diameter of the entrance 305 of the
cold air outlet and the inner diameter of the cold and heat
separation chamber 210 and dividing the sum by 2 to allow the flow
in a direction of the cold and heat separation chamber 210 to be
efficiently performed.
[0052] Whether or not the first generator 300, 320 and the second
generator 400 generate the rapid rotating wind to efficiently
perform the flow in the direction of the cold and heat separation
chamber is significantly affected by the air intake grooves 302,
402 and a value of obtained by subtracting the diameter of the
entrance 305 of the cold air outlet from the inner diameter of the
cold and heat separation chamber 210.
[0053] The size of the air intake grooves 302, 402 is small and the
value obtained by subtracting the diameter of the entrance 305 of
the cold air outlet from the inner diameter of the cold and heat
separation chamber 210 is large. Therefore, the diameter of the
sleeve outlet 507 may further deviate from the value optioned by
adding the diameter of the entrance 305 of the cold air outlet to
the inner diameter of the cold and heat separation chamber 210 and
dividing the sum by 2.
[0054] Those skilled in the art can determine an appropriate value
of the diameter of the sleeve outlet 507 through repeatedly
experiments by recognizing the principle of operation of the
present disclosure.
[0055] Generally, it is preferable that the diameter of the sleeve
outlet 507 satisfies [the diameter of the entrance of the cold air
outlet+{(the inner diameter of the cold and heat separation
chamber-the diameter of the entrance of the cold air
outlet)/2.+-.(the inner diameter of the cold and heat separation
chamber-the diameter of the entrance of the cold air
outlet)/4}].
[0056] FIG. 4 is a view showing the vortex tube shown in FIG. 3,
wherein an outer tube cover 700 surrounding the cold and heat
separation chamber 210 causes an effect that the compressed air
flowing into the vortex tube through a compressed air inlet 110
cools the cold and heat separation chamber 210 with high
temperature. Furthermore, a hot air adjusting valve 230 with a
different shape is shown in the drawing.
[0057] Hereinbelow, the derivation of a comparative example and
embodiments will be described.
[0058] The vortex tubes shown in FIGS. 1 to 3 are tested and
compared to each other under the same conditions. The
specifications of the manufactured vortex tubes are as shown in
FIGS. 1 to 3, and metal used in the vortex tubes is SUS 316L.
[0059] The thickness of the sleeve is 2 mm and diameters of the
sleeve entrance 505 and the sleeve outlet 507 in FIG. 2 are 4.5 mm.
The diameter of the sleeve entrance 505 in FIG. 3 is 7 mm and the
diameter of the sleeve outlet 507 is 4.5 mm. The compressed air
supplied into the vortex tubes is controlled to remain at 7 bar
continuously.
[0060] Experiments were conducted 5 times each by dividing the cold
ratio into five stages of 30%, 32%, 34%, 36%, 38%, and 40%. Between
the experiments, the temperature of the vortex tube was lowered to
15.degree. C. by forcibly cooling so that following experiments
were started in a stable state.
[0061] As a result of the experiment, discharge temperature at a
cold side is measured, and the measurement time was determined in
consideration that the temperature reaches a steady state in 1
minute, and cold discharge temperatures, which appear in exactly 3
minutes and 4 minutes after the compressed air supply time, was
measured and averaged. In the experiment, the compressed air
supplied in the vortex tube is controlled to generate the rapid
rotating wind (cyclone) of 1,200,000 RPM.
[0062] As a result of the measurement, it was found that the vortex
tube with the two generators as shown in FIGS. 2 and 3 is more
efficient than the conventional vortex tube in FIG. 1. The reason
of the above result is estimated as follows. For example, when 100%
of compressed air generates the rapid rotating wind from one
generator, a large volume of the compressed air is naturally moved
forward along an outside an outer portion of an inside surface of
the cold and heat separation chamber 210.
[0063] However, a large volume of the compressed air may be
absorbed into a cold vortex flowing through a center portion of the
cold and heat separation chamber 210 to the entrance of the cold
air outlet.
[0064] Accordingly, when the vortex tube includes the two
generators, a volume of the compressed air supplied into the first
generator 300, 310 is a half of the total volume of the compressed
air. A volume of a portion of the rapid rotating wind generated by
the first generator 300, 310, the portion being absorbed in the
cold vortex returned to the entrance 305 of the cold air outlet
(volume that is population parameter, actually, is a value of
multiplying population parameter by absorption rate) may be
theoretically reduced to 50% of the total volume.
[0065] When the sleeve is inclined, the rapid rotating wind
generated from the first generator 300, 310 is discharged through
the sleeve without loss and is moved to the cold and heat
separation chamber 210.
[0066] Under the above condition, 50% of the compressed air
supplied through the compressed air inlet generates the rapid
rotating wind through the second generator 400. The rapid rotating
wind is generated by the first generator 300, 310 and is located at
an outer portion of the rapid rotating wind that has a slightly
reduced diameter while passing through the inclined sleeve.
Accordingly, 100% of the rapid rotating wind may be moved toward
the cold and heat separation chamber without contact with the cold
vortex.
[0067] Therefore, the vortex tube with the two generators of the
present disclosure may be considered to generate cold air colder
than the vortex tube with the single generator. Of course, the
diameter of the sleeve outlet 507 is larger than the diameter of
the entrance 305 of the cold air outlet. Conventionally, it is
preferable that the diameter of the sleeve outlet 507 is a value
equal to 1/2 of the sum of the inner diameter of the cold and heat
separation chamber 210 and the diameter of the entrance 305 of the
cold air outlet.
[0068] According to the present disclosure, the inner diameter of
the cold and heat separation chamber 210 is 7 mm and the diameter
of the entrance 305 of the cold air outlet is 2.2 mm. Therefore,
4.6 mm is suitable as the diameter of the sleeve outlet 507, but
the vortex tube may be sufficiently operated with the diameter from
4.1 to 5.1 m. The vortex tube of the present disclosure adopts the
diameter of 4.5 mm at the sleeve outlet 507.
TABLE-US-00001 TABLE 1 [Comparative Example] Result of measurement
of conventional product shown in FIG. 1 (measure: .degree. C.)
Classification 30% 32% 34% 36% 38% 40% Average Cold Run 1 -34.2
-33.8 -32.9 -32.4 -31.2 -30.4 discharge Run 2 -35.2 -34.4 -33.3
-32.9 -30.8 -30.9 temper- Run 3 -33.8 -33.5 -33.7 -31.9 -30.5 -29.6
ature Run 4 -34.9 -32.9 -32.4 -32.8 -31.9 -31.1 Run 5 -35.4 -34.8
-33.8 -31.4 -31.4 -30.2 Deviation 1.6 1.9 1.4 1.4 1.3 1.5 1.5
Average -34.7 -33.9 -33.2 -32.3 -31.2 -30.4 -32.6
TABLE-US-00002 TABLE 2 [Embodiment 1] Result of measurement of
product of present disclosure shown in FIG. 2 (measure: .degree.
C.) Classification 30% 32% 34% 36% 38% 40% Average Cold Run 1 -36.5
-36.0 -35.8 -34.2 -32.7 -31.8 discharge Run 2 -37.2 -34.5 -35.1
-33.7 -31.8 -31.2 temper- Run 3 -34.9 -36.7 -34.1 -32.2 -33.3 -30.1
ature Run 4 -36.9 -35.3 -33.6 -34.9 -31.9 -32.1 Run 5 -37.3 -35.9
-34.7 -32.9 -32.4 -31.5 Deviation 2.4 2.2 2.2 2.7 1.5 2.0 2.2
Average -36.6 -35.7 -34.7 -33.6 -32.4 -1.3 -34.1
TABLE-US-00003 TABLE 3 [Embodiment 2] Result of measurement of
product of present disclosure shown in FIG. 3 (measure: .degree.
C.) Classification 30% 32% 34% 36% 38% 40% Average Cold Run 1 -38.5
-37.9 -37.5 -36.5 -35.2 -33.4 discharge Run 2 -39.7 -38.8 -36.9
-35.1 -34.1 -32.1 temper- Run 3 -37.5 -37.2 -38.2 -36.8 -35.5 -33.8
ature Run 4 -40.3 -38.4 -36.4 -35.4 -33.9 -33.1 Run 5 -38.8 -38.1
-37.4 -36.2 -34.9 -32.5 Deviation 2.8 1.6 1.8 1.7 1.6 1.7 Average
-39.0 -38.1 -37.2 -36.0 -34.7 -33.0 -36.3
[0069] FIG. 6 is a view showing a vortex tube with three generators
by adding one generator to the vortex tube in FIG. 3.
[0070] The first generator and the second generator in FIG. 6 are
designed with the same structure as the first generator and the
second generator of the vortex tube in FIG. 3. The third generator
in FIG. 6 is manufactured to have three wings and three air intake
grooves of the same size like the vortex tube in FIG. 3. Other
numerical values are as shown in
[0071] FIG. 5. Therefore, the vortex tube in FIG. 6 has nine air
intake grooves, so the compressed air is supplied 41 to 43% more
than the vortex tube in FIGS. 1 to 3.
TABLE-US-00004 TABLE 4 [Embodiment 3] Result of measurement of
product of present disclosure shown in FIG. 6 (measure: .degree.
C.) Classification 30% 32% 34% 36% 38% 40% Average Cold Run 1 -35.5
-35.8 -35.1 -33.8 -32.2 -31.2 discharge Run 2 -37.2 -33.9 -34.8
-32.9 -31.5 -30.5 temper- Run 3 -34.8 -36.2 -34.1 -34.1 -32.9 -29.9
ature Run 4 -36.1 -35.6 -33.4 -34.5 -33.0 -32.0 Run 5 -36.7 -35.4
-34.4 -32.6 -32.3 -31.3 Deviation 2.4 2.3 1.7 1.9 1.5 2.1 2.0
Average -36.1 -35.4 -34.4 -33.6 -32.4 -31.0 -33.8
[0072] FIG. 7 is a view showing an embodiment in which a
counterflow prevention cap 150 is inserted in the hot air adjusting
valve so that the vortex tube may be operated even under external
pressure. The counterflow prevention cap 150 is generally made of
synthetic resin containing rubber properties, but may be made of
metal with elasticity. The counterflow prevention cap 150 does not
act as a resistor when heat is discharged to the outside of the
vortex tube, but when the outside air flows into the inside of the
vortex tube, the counterflow prevention cap 150 spreads to serve as
the resistor.
[0073] Although a preferred embodiment of the present disclosure
has been described for illustrative purposes, those skilled in the
art will appreciate that various modifications, additions and
substitutions are possible, without departing from the scope and
spirit of the present disclosure as disclosed in the accompanying
claims.
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