EP2108902A2 - Vortexrohr - Google Patents

Vortexrohr Download PDF

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Publication number
EP2108902A2
EP2108902A2 EP09156855A EP09156855A EP2108902A2 EP 2108902 A2 EP2108902 A2 EP 2108902A2 EP 09156855 A EP09156855 A EP 09156855A EP 09156855 A EP09156855 A EP 09156855A EP 2108902 A2 EP2108902 A2 EP 2108902A2
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EP
European Patent Office
Prior art keywords
vortex
tube
sleeve
air
tube body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09156855A
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English (en)
French (fr)
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EP2108902A3 (de
Inventor
Rasmus Erik Tibell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Silvent AB
Original Assignee
Silvent AB
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Filing date
Publication date
Application filed by Silvent AB filed Critical Silvent AB
Publication of EP2108902A2 publication Critical patent/EP2108902A2/de
Publication of EP2108902A3 publication Critical patent/EP2108902A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/02—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using Joule-Thompson effect; using vortex effect
    • F25B9/04—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using Joule-Thompson effect; using vortex effect using vortex effect

Definitions

  • the present invention relates to a vortex tube designed to generate cold air.
  • a vortex tube also known as Ranque-Hilsch tube, is a device which is used in such cases where one wants to generate a flow of cold air.
  • a field of application for vortex tubes may be cooling of tools, for example grinding discs. Other fields of application comprise cooling of coatings within the plastic industry, for example.
  • a flow of air is sent through a vortex generator that causes the air to rotate and a vortex of air to move inside a tube.
  • the air vortex In a second end of the tube the air vortex meets a resistance and the air flow is divided into two parts, one flow of cold air and one flow of hot air.
  • the cold air flow moves backwards in a direction towards the vortex generator and out through a central opening therein.
  • the hot air flow leaves the vortex tube through another path.
  • Vortex tubes according to prior art are described in EP 1 396 690 A1 and US 3,183,273 , for instance.
  • a conceivable theoretic explanation of the effect of the vortex tube may be that the part of the air flow, which turns back at the resistance, delivers thermal energy to the air vortex moving forwards in a direction towards the resistance.
  • An object of the present invention is to provide an improved vortex tube.
  • it is, inter alia, an object to give the vortex tube a more compact design.
  • the present invention relates to a vortex tube for the generation of cold air.
  • the vortex tube comprises a tube body with a wall, the inner wall surface of which forms an inner channel with a circular-cylindrical cross section.
  • a vortex generator is located in a first end of the channel and a flow limiting body (a resistance) is located in a second end of the channel, and an outlet for hot air is also arranged at the second end of the channel.
  • the vortex generator has an opening, through which cold air may leave the channel in the first end of the channel, and further the vortex tube has at least one conduit for the supply of compressed air to the vortex generator.
  • Said at least one conduit for the supply of compressed air extends in the same axial direction as the tube body and runs from a rear end of the vortex tube up to an inlet to the vortex generator, and the rear end of the vortex tube is adapted to be connected to a source of compressed air.
  • said at least one conduit for the supply of compressed air extends/runs from a rear end of the very tube body through the wall of the tube body in parallel with the inner channel.
  • said at least one conduit for the supply of compressed air extends/runs from a rear end of the very tube body through the wall of the tube body in parallel with the inner channel.
  • the vortex tube has a plurality of conduits for compressed air extending/running through the wall of the tube body in parallel with the inner channel.
  • the conduits for compressed air may then be distributed around the circumference of the tube body, and preferably they are evenly distributed around the circumference of the tube body to give a uniform flow in the inner channel of the vortex tube.
  • the outlet for hot air which is arranged in connection to the second end of the channel, is preferably designed to discharge hot air radially outwardly from the tube body.
  • An axially adjustable first sleeve may possibly be arranged on the tube body in connection to the outlet for hot air, so that, by means of axial displacement of the first sleeve, one can adjust the size of the outlet for hot air.
  • the vortex generator may be designed so that it has passages, which at first converge and then diverge in a direction from the inlet of the vortex generator and towards the inner channel of the tube body.
  • the vortex tube may comprise a valve, which is arranged to be axially displaceable into the vortex generator or out of it, so that a flow of air through the vortex generator may be adjusted thereby.
  • a valve may be arranged inside a second sleeve.
  • Said second sleeve has a first end which is threaded onto the tube body so that, by screwing/turning the second sleeve, one may adjust the position of the valve in relation to the vortex generator.
  • Said second sleeve has an outwardly open second end through which cold air may flow out.
  • the second sleeve may possibly comprise one or more vanes arranged between the valve and the outwardly open second end of the second sleeve. Such vanes are arranged at least partly to convert a rotating air flow into a straight air flow.
  • the second, outwardly open end of the second sleeve may possibly be toothed along its circumference so that an air flow from the vortex tube is not blocked if the outwardly open end of the second sleeve would be pressed against a hindrance.
  • a sound-absorbing filter may be arranged on the tube body around the region of the outlet/outlets for hot air.
  • the sound-absorbing filter is suitably designed as a sleeve.
  • a vortex tube T according to prior art is shown.
  • Fig. 1 it is schematically shown how air from a source, not shown, of compressed air, is fed into the tube T via an inlet I.
  • the inlet I is arranged perpendicularly in relation to the longitudinal axis of the tube T.
  • a vortex generator V which may comprise vanes or channels (not shown) to put the air into rotation.
  • a vortex of air moves from the vortex generator V and in a direction to the right in the figure.
  • the air vortex meets a resistance M.
  • Vortex tubes of this kind are today used in industrial applications such as e.g. for cooling of tools.
  • a first embodiment of a vortex tube 1 for the generation of cold air according to the present invention is shown, while a second embodiment is shown in Fig. 26 .
  • the vortex tube 1 according to the first embodiment comprises i.a. a tube body 2 and a sleeve 21 which may be used for adjusting the air flow in a manner which will be explained later.
  • a sleeve 21 which may be used for adjusting the air flow in a manner which will be explained later.
  • cold air exits through an outwardly open end 23 of the sleeve 21.
  • Fig. 3 shows a cross section of the vortex tube shown in Fig. 2 .
  • the tube body 2 has a wall 5, the inner wall surface of which forms a channel 7.
  • the channel 7 has a round circular-cylindrical cross section.
  • Fig. 6 shows an additional cross section of the vortex tube 1 according to the first embodiment.
  • the crosscut has, however, been made in another plane and the vortex tube is shown dismounted into its components.
  • the channel 7 has a first end 9 and a second end 11.
  • a vortex generator 8 is placed in the first end 9 of the channel 7, and a flow limiting body 10 is placed in the second end 11 of the channel.
  • the flow limiting body 10 is a resistance which serves basically the same function as the resistance M in the vortex tube according to Fig. 1 .
  • At least one outlet 12 for hot air is arranged at the second end 11 of the channel 7. In certain embodiments of the invention, several outlets 12 for hot air may be provided.
  • the vortex tube 1 has at least one conduit 14 for the supply of compressed air to the vortex generator 8.
  • Said at least one conduit 14 for the supply of compressed air extends/runs through the wall 5 of the tube body 2 in parallel with the inner channel 7 from a rear end 3 of the tube body 2 up to an inlet 15 to the vortex generator 8.
  • the rear end 3 of the tube body 2 is adapted to be connected to a source 16 of compressed air.
  • compressed air may be fed into the conduit or conduits 14.
  • there is a plurality of conduits 14 for compressed air extending through the wall 5 of the tube body 5, distributed around the circumference of the tube body 2. With such an embodiment a larger flow may be obtained. Further, an essentially uniform flow in the vortex tube may be obtained, which results in a more efficient division of the air flow into a hot and a cold air flow.
  • the rear end 3 of the tube body 2 may be seen as a rear end of the very vortex tube 1.
  • the vortex tube 1 comprises parts lying behind the rear end 3 of the tube body. Such an embodiment is shown in Fig. 26 .
  • the tube body 2 has a rear end 3 and a front end 4.
  • Fig. 12 shows the front end 4 of the tube body 2 in the direction of the arrow B in Fig. 10 .
  • the vortex generator 8 may be provided with one or more passages 19 that are directed inwardly towards the inner channel 7 of the tube body 2.
  • the passages 19 may be designed as laval nozzles, which at first converge and then diverge in a direction from the inlet of the vortex generator towards the inner channel 7 of the tube body 2. Such a design contributes to increasing the speed of the air flow.
  • FIG. 13 This design of the passages 19 is best shown in Fig. 13 .
  • Fig. 18 also shows how each conduit 14 for compressed air extends to an inlet 15 to the vortex generator 8.
  • the vortex generator has an opening 13, through which cold air may leave the inner channel 7 in the first end 9 of the channel 7.
  • the vortex generator 8 may be made integral with the tube body 2 or it may be manufactured as a separate body which is then mounted onto the vortex tube 1, e.g. by fixing it in the tube body 2.
  • converging/diverging passages may be used also in such vortex tubes where air is transversally supplied like in the vortex tube shown in Fig. 1 .
  • the outlet 12 (or the outlets 12) for hot air is/are designed to discharge hot air radially outwardly from the tube body 2.
  • Fig. 10 shows the rear end 3 of the tube body 2, i.e. in the direction of the arrow A in Fig. 10 .
  • Fig. 11 shows the rear end 3 of the tube body 2, i.e. in the direction of the arrow A in Fig. 10 .
  • conduits 14 for compressed air that are distributed around the circumference of the tube body 2.
  • the conduits 14 run parallel with the channel 7.
  • FIG. 8 and Fig. 9 A possible design of the flow limiting body 10 (or the resistance 10) is shown in Fig. 8 and Fig. 9 .
  • the flow limiting body 10 In its end facing towards the vortex generator 8, the flow limiting body 10 has been divided into a plurality of vanes 34. These vanes may contribute to control the outer flow of hot air in a direction towards the outlet or outlets 12, when a vortex of rotating air reaches the flow limiting body 10.
  • Embodiments are also conceivable, where the flow limiting body 10 is not provided with such vanes 34.
  • a vortex tube 1 may comprise a first axially adjustable sleeve 17.
  • the function of this sleeve is more distinct shown in Fig. 5 .
  • the sleeve 17 is arranged on the tube body 2 and associated with the outlet 12 for hot air. Through an axial displacement of the first sleeve 17, one may adjust the size of the outlet 12 for hot air.
  • a way of achieving an axial displacement of the first sleeve 17 is shown in Fig. 5 .
  • an outer control sleeve 28 may be placed on the tube body 2 over the first sleeve 17.
  • the outer control sleeve has an inner thread 29 cooperating with an outer thread 30 on the first sleeve 17.
  • the outer control sleeve 28 is stationary in its axial position. When the outer control sleeve 28 is turned, the inner thread 29 of the control sleeve 28 will cooperate with the outer thread 30 of the axially displaceable first sleeve 17 such that the first sleeve 17 is displaced in an axial direction. In this way, one may increase or reduce the available outlet area of the outlet or outlets 12 for hot air.
  • the sleeve 17 is displaced by it having an outer thread 30 which cooperates with the inner thread 29 of the control sleeve.
  • the sleeve 17 does not utilize threads for displacement of the sleeve.
  • the sleeve could be loosely mounted on the tube body 2 but be so snugly fitted on the tube body that, in order to displace the sleeve 17, the friction must be overcome and a certain force must be used.
  • a sleeve which, at different angle positions, blocks the outlet/outlets 12 more or less.
  • a sleeve may be provided with an opening/openings which correspond(s) to the outlet/outlets 12 for hot air and which may be turned so that they completely or partly coincide with the outlet/outlets 12. The sleeve may then be given such a design that, in one angular position, it completely blocks the outlet/outlets 12 for hot air.
  • the axially displaceable and/or turnable sleeve 17 thus permits an adjustment of the amount of hot air leaving the vortex tube. This adjustment takes place independently of the total amount of air.
  • the vortex tube is designed such that the size of the outlet/outlets 12 for hot air can be adjusted. In this way, one can adjust the ratio between the amount of hot air discharged and the amount of cold air discharged. This adjustment is independent of the total flow.
  • the vortex tube 1 further comprises a valve 20, which is axially displaceable into the vortex generator 8 or out of it, so that a flow of air through the vortex generator 8 may be adjusted thereby.
  • a valve 20 which is axially displaceable into the vortex generator 8 or out of it, so that a flow of air through the vortex generator 8 may be adjusted thereby.
  • the valve 20 may be designed as a round body, on which a protruding male part 36 has been arranged.
  • the protruding male part 36 is designed to fit into the inlet 15 to the vortex generator and in the passages 19 of the vortex generator.
  • the dimensions of the male part 36 may be chosen somewhat smaller than the dimensions of the passages 19 in the vortex generator; they may be about 5 % smaller, for instance, so a certain play is obtained.
  • the valve 20 may possibly be manufactured in two parts; one front part 20a and a rear part 20b (see Fig. 18 , Fig. 20 ).
  • the front part 20a may then be an utmost end or the tip of the protruding male part 36 of the valve, while the rear part 20b forms the main part of the body of the valve 20 and also the base of the protruding male part 36.
  • the front part 20a may then be somewhat smaller than the dimensions of the passages 19 in the vortex generator; they may be about 5 % smaller, for instance, so that a certain play is obtained.
  • the dimensions of the portion of the protruding part 36 belonging to the rear part 20b may indeed be somewhat larger than the passages 19, say up to 4 % larger. In this way a sealing effect is obtained.
  • the valve 20 or at least its rear part 20b may then be manufactured of a comparatively soft material permitting a certain deformation.
  • the front part 20a may be manufactured of a material marketed by Bayer AG, Germany, under the trade name Makrolon ® 8035.
  • the rear part 20b may be manufactured of a material commercially available under the trade name Elastollan ® C60A HPM which is marketed by Elastogran GmbH (Elastogranstrasse 60, 49448 Lemförde, Germany), a subsidiary of BASF.
  • FIG. 18 a position is shown (exaggerated) where the valve 20 is completely separated from contact with the vortex generator 8. However, the protruding male part 36 is in a position to move into the inlet 15 and the passages 19.
  • Figure 19 shows, in perspective, how the valve 20 has moved up to the tube body 2 and how the protruding male part 36 has began to penetrate into the passages 19 in the vortex generator 8.
  • Fig. 20 it is shown how the protruding male part 36 of the valve 20 has penetrated a distance into the vortex generator 8. The same position is shown in perspective in Fig. 19 .
  • valve 20 need not necessarily be designed such that both the inlet 15 to the vortex generator and the passages 19 are blocked.
  • the protruding male part 36 of the valve could be designed to enter only into the inlet 15 or to enter only into the passages 19 of the vortex generator.
  • the position of the valve 20 in relation to the vortex generator 8 may be adjusted in different ways. A possible solution will now be explained more in detail with reference to Fig. 4a and Fig 4c . As may be seen from Fig. 4a and Fig. 4c , the valve 20 may be arranged inside a second sleeve 21.
  • the second sleeve 21 has a first end 22, which is screwed onto the tube body 2.
  • the tube body 2 may have an outer thread 41 that can cooperate with an inner thread 40 of the second sleeve 2.
  • By screwing/turning the second sleeve 21 one may force it to move axially on the tube body 2.
  • the valve 20 accompanies the second sleeve 21 in its axial motion.
  • By screwing the second sleeve 21 one may therefore adjust the position of the valve 20 in relation to the vortex generator 8. Thereby, the air flow from the conduits 14 and into the inner channel 7 of the tube body 2 may be adjusted.
  • the second sleeve 21 has an outwardly open end 23 through which cold air may flow out.
  • the second sleeve 21 may be manufactured in one single piece. As may be seen from Fig. 4a -4c and Figs. 6 to 7 , the second sleeve 21 may, however, comprise an outer sleeve part 21a and an inner sleeve part 21b, wherein the inner sleeve part 21b may possibly be fixed to the outer sleeve part 21a through gluing. Instead of gluing the outer sleeve part 21a to the inner sleeve part 21b, these parts can be connected by means of a snap-on connection.
  • the snap-on connection can be achieved by means of a recess or groove 45 formed on the inside of outer sleeve part 21 a and a corresponding protrusion 46 that can snap into the groove 45.
  • the outer sleeve part 2 1 a is separated from the inner sleeve part 21b.
  • these parts have been connected to each other to form the second sleeve 21 which is showed connected to the tube body 2.
  • the outer sleeve part 2 1 a has a wedge or rail 33 which may engage a groove 32 of the inner sleeve part 21b, such that the inner sleeve part 21b is locked against rotation in relation to the outer sleeve part 21 a. If the second sleeve 21 is to be made in one piece, this implies that it will be more difficult to manufacture. By manufacturing the second sleeve 21 in two parts 21a, 21b (or more than two parts), that are subsequently assembled, the production is simplified.
  • an additional component 50 which is placed inside the second sleeve 21.
  • This component is best shown in Fig. 21 .
  • the component 50 supports a plurality of vanes 24.
  • Embodiments with only one vane are conceivable, but preferably there is more than one vane.
  • the vane or vanes 24 is/are arranged between the valve 20 and the outwardly open second end 23 of the second sleeve 21.
  • the vane 24 or vanes 24 serves/serve at least partly to convert a rotating air flow into a straight air flow.
  • the additional component 50 with its vanes 24 therefore constitutes an air flow straightening device.
  • This straightening of the flow one may reduce the turbulence. This results in a lower noise level at the outlet for cold air.
  • a sound-absorbing filter which removes the higher frequencies.
  • Embodiments without flow straightening vanes 24 or sound-absorbing filters are, however, also conceivable.
  • the component 50 in Fig. 4a may as a whole be designed as a filter of a sound-absorbing material, which completely or partly (preferably completely) fills the outlet for the cold air.
  • a porous material that allows the cold air to pass but absorbs the sound.
  • the material of such a filter may e.g. be plastic foam. It has proved that a filter of plastic foam not only reduces the noise level but also may contribute to reduce the risk for clogging because of ice formation.
  • the axial length of such a filter may in realistic embodiments be 15 to 30 mm, for instance.
  • the axial length of the filter (e.g. a filter of plastic foam) may be for example, 25 mm.
  • a possible outer diameter of such a filter may be (for instance) in the range of 10 to 22 mm.
  • Such a sound-absorbing filter may have a round cross section but also other cross sections are conceivable, for instance rectangular, oval or hexagonal.
  • the outwardly open second end 23 of the second sleeve 21 may be toothed along its circumference, such that it has radially outwardly directed openings 25. If the second open end 23 of the second sleeve 21 would be pressed against a hindrance during the use of the vortex tube 1, air may then flow out through the opening 25, i.e. the air flow from the vortex tube 1 is not blocked. In this way, injury to persons may be avoided if the vortex tube 1 would unintentionally be pressed against the skin of a person.
  • a sound-absorbing filter 27 may be arranged on the tube body 2 in the region for the outlet or outlets 12 for hot air.
  • the sound-absorbing filter 27 is suitably designed as a sleeve.
  • the noise level of the vortex tube may be reduced by the sound-absorbing filter 27.
  • embodiments without such a sound-absorbing filter 27 are conceivable.
  • the conduits 14 in the tube body are rearwardly open.
  • the tube body 2 is arranged to be connected, direct or indirectly, to a source of compressed air.
  • One way to achieve this may be that the tube body 2 is designed to be fixed directly to a connection to compressed air.
  • the connection may instead be achieved by a nipple 31 which is screwed on the tube body 2.
  • the rear end 3 of the tube body 2 has an outer thread 42 that may cooperate with a first inner thread 43 of the nipple 31.
  • the nipple 31 may have a second inner thread 44 through which the nipple 31 may be mounted on a connection to a source of compressed air. It is realized that the connection of the tube body 2 backwards to a source of compressed air may be designed in many other ways.
  • Fig. 25 shows how the vortex tube 1 has been fastened with screws (or fastened in another way) on an air blow gun 70 which in its turn may be connected to a container containing compressed air.
  • the air blow gun can then serve as a source of pressurized air.
  • FIG. 24 Another way to utilize the vortex tube 1 of the invention is shown in Fig. 24 .
  • Fig. 24 a plurality of vortex tubes 1 has been placed together and in parallel in a bunch on a manifold 60.
  • the vortex tube 1 of the invention functions in the following way. Compressed air is admitted from the rear, possibly through activation of an air blow gun, such as the blow gun shown in Fig. 25 . The compressed air enters into the conduits 14 in the rear end 3 of the tube body 2. The compressed air passes through the conduits 14 up to the vortex generator 8 where the compressed air passes the passages 19 (see for instance Fig. 18 ). From the vortex generator 8 the air enters into the inner channel 7 of the tube body 2 and moves in a vortex backwards in the tube body 2 towards the flow limiting body 10.
  • an air blow gun such as the blow gun shown in Fig. 25 .
  • the compressed air enters into the conduits 14 in the rear end 3 of the tube body 2.
  • the compressed air passes through the conduits 14 up to the vortex generator 8 where the compressed air passes the passages 19 (see for instance Fig. 18 ). From the vortex generator 8 the air enters into the inner channel 7 of the tube body 2 and moves in a vortex backwards in the tube
  • the air flow When the air flow reaches the flow limiting body 10, the air flow will be divided into a hot air flow exiting through the outlet 12 or outlets 12 and a cold air flow moving back in a direction towards the vortex generator 8.
  • the cold air flow passes through the central opening 13 of the vortex generator 8 and out of the vortex tube. If the vortex tube has a valve 20, the cold air that exits the vortex tube will first pass through the opening 13 of the vortex generator and then through the opening 35 of the valve 20. If flow-straightening vanes 24 have been provided in the vortex tube 1, the air flow will pass also these ones.
  • a user of the vortex tube 1 wants to reduce the total amount of air, this may be done through screwing/turning the second sleeve 21, such that, thereby, the valve 20 will move axially in the vortex tube 1 and enter farther into the inlet of the vortex generator 8 so that the air flow is throttled. If one instead wants to increase the total air flow, the second sleeve 21 is screwed in the other direction so that the valve 20 moves out of the vortex generator 8.
  • the outer control sleeve 28 (see Fig. 5 ) is turned such that the first sleeve 17 is axially displaced forwards or backwards in the direction of arrow C.
  • the outlet or outlets 12 will be more or less open so that a larger or smaller share of hot air may leave the vortex tube.
  • the outlets 12 are entirely blocked so that no air exits through the outlets 12 for hot air. In such a case, however, no division of the air flow will take place and in such a case the air leaving the vortex tube 1 at the second end will not be cooled. However, if one lets out a certain amount of hot air, the air flow will be divided and cold air will flow out through the opening 13 in the vortex generator 8 and out of the vortex tube 1.
  • Both the tube body 2 and the other components in the vortex tube 1 may be manufactured of basically any material, for instance stainless steel or any other metallic material. However, it has proved that, from a manufacturing point of view, it may be suitable to choose a plastic material.
  • the axially running conduits 14 in the tube body 2 may be difficult to obtain with machining, as they are relatively narrow in relation to their length.
  • the tube body 2 may be made of a polyamide material, e.g. a material marketed under the trade name HTN PA, but also other choices of material are conceivable.
  • the vortex tube 1 may have a total length of about 170 mm and an outer diameter of about 20 to 25 mm but the vortex tube may, of course, have other sizes. For instance, embodiments are conceivable where the total length of the vortex tube 1 is in the range of 150 mm to 250 mm and the outer diameter of the vertex tube is larger than 25 mm or smaller than 20 mm.
  • FIG. 26 shows how the compressed air may run from a rear inlet 90 in the rear end 103 of the vortex tube 1 and up to an inlet 15 to the vortex generator 8. Inside the channel 7 the function is the same as according to the first embodiment and will therefore not be explained further.
  • Cold air leaves the vortex tube 1 through a conduit 300 that ends in an outlet 100 in a front end of the vortex tube 1.
  • the rear end 103 of the vortex tube 1 may be connected to a source of compressed air.
  • the vortex tube is, however, not as compact as in the first embodiment where the conduit/conduits for compressed air runs/run through the very wall of the tube body 2 but still the advantage is achieved that several vortex tubes may be grouped together and connected to a common source of compressed air via a manifold 60.
  • compressed air may be supplied in the axial direction of the vortex tube, it will be easier to use the vortex tube when it has been mounted on an air blow gun, for instance. A bulky radial connection is avoided.
  • conduits 14 for the supply of compressed air run axially (from one end of the tube body 2 up to the inlet to the vortex generator 2, in parallel with the inner channel 7 of the tube body 2) also another advantage is achieved.
  • This design makes it possible to adjust the total air flow by means of a valve 20 fitting into the mouths of the conduits 14.
  • the ratio between hot air and cold air can easily be adjusted.
  • the size of the outlet/outlets 12 can easily be adjusted.
  • the valve 20 If there is an adjustment possibility for the total air flow (the valve 20) and another adjustment possibility (the axially displaceable sleeve 17) for the adjustment of the ratio between hot air and cold air, one may adjust the total flow independently of the ratio between cold air and hot air. In a corresponding manner, the ratio between hot air and cold air may be adjusted independently of the total air flow.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
EP09156855.0A 2008-04-10 2009-03-31 Vortexrohr Withdrawn EP2108902A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0800805A SE532276C2 (sv) 2008-04-10 2008-04-10 Vortexrör

Publications (2)

Publication Number Publication Date
EP2108902A2 true EP2108902A2 (de) 2009-10-14
EP2108902A3 EP2108902A3 (de) 2014-11-12

Family

ID=40823372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09156855.0A Withdrawn EP2108902A3 (de) 2008-04-10 2009-03-31 Vortexrohr

Country Status (4)

Country Link
US (1) US20090255272A1 (de)
EP (1) EP2108902A3 (de)
CN (1) CN101556092A (de)
SE (1) SE532276C2 (de)

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RU2413579C1 (ru) * 2009-11-11 2011-03-10 Евгений Павлович Шелудяков Система неадиабатных вихревых труб для извлечения этана, пропан-бутана и конденсата из больших объемов природного газа
CN103673369A (zh) * 2012-09-26 2014-03-26 （株）京道商社 涡流管
US20150308103A1 (en) * 2012-11-30 2015-10-29 Rensselaer Polytechnic Institute Methods and systems of modifying air flow at building structures
WO2022263882A1 (en) * 2021-06-15 2022-12-22 Khalifa University of Science and Technology Vortex tube including secondary inlet with swirl generator

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CN102614749B (zh) * 2011-01-26 2014-10-22 北京星旋世纪科技有限公司 涡旋式冷热气体分离装置
SE537139C2 (sv) * 2012-10-09 2015-02-17 Nano Control Ab Anordning för avskiljning av partiklar från ett gasflöde
CN102937344B (zh) * 2012-11-13 2014-12-03 浙江大学 带轴向冷热切换机构的涡流管以及带有该涡流管的换热系统
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SE0800805L (sv) 2009-10-11
CN101556092A (zh) 2009-10-14
US20090255272A1 (en) 2009-10-15
SE532276C2 (sv) 2009-12-01
EP2108902A3 (de) 2014-11-12

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