US20130025834A1 - Double tube type heat exchange pipe - Google Patents
Double tube type heat exchange pipe Download PDFInfo
- Publication number
- US20130025834A1 US20130025834A1 US13/547,442 US201213547442A US2013025834A1 US 20130025834 A1 US20130025834 A1 US 20130025834A1 US 201213547442 A US201213547442 A US 201213547442A US 2013025834 A1 US2013025834 A1 US 2013025834A1
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- US
- United States
- Prior art keywords
- heat exchange
- gas
- liquid coolant
- inner tube
- type heat
- 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.)
- Abandoned
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
- F28F1/424—Means comprising outside portions integral with inside portions
- F28F1/426—Means comprising outside portions integral with inside portions the outside portions and the inside portions forming parts of complementary shape, e.g. concave and convex
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/06—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of metal tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
- F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/08—Tubular elements crimped or corrugated in longitudinal section
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/10—Particular pattern of flow of the heat exchange media
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
- F28F2255/08—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes pressed; stamped; deep-drawn
Definitions
- the present invention relates to a double tube type heat exchange pipe, and more particularly, to a double tube type heat exchange pipe having an inner tube with a spiral groove, through which a gas and a liquid pass, so that the gas and liquid continuously collide with a plurality of protrusions to be cooled by heat exchange, and the cooled gas and liquid are collected in a second collecting groove to be discharged through through-holes.
- an air-conditioning apparatus used in a vehicle is configured to cool the inside of the vehicle in summertime, heat it in wintertime, or defrost a windshield in the rain or in wintertime, securing front and rear fields of vision of a driver.
- the air-conditioning apparatus includes both a heating system and a cooling system to selectively introduce outdoor air or indoor air to be heated or cooled and blown into the vehicle, cooling, heating or ventilating the inside of the vehicle.
- the air-conditioning apparatus includes a double tube type internal heat exchanger configured to cool the air supplied into the vehicle.
- FIG. 1 is a cross-sectional view showing the double tube type internal heat exchanger.
- the double tube type internal heat exchanger includes an inner tube 10 having a low-pressure flow path 11 formed therein and a spiral portion 12 formed at an outer surface thereof which accommodates high-pressure flow, and an outer tube 20 coupled to an outer circumferential surface of the inner tube 10 in a double tube structure to form a high-pressure flow path 21 whose both ends are coupled at their outer circumferential surfaces to inlet/outlet pipes 22 and 23 configured to supply and discharge a gas.
- coolant passes through the low-pressure flow path 11 of the inner tube 10 to cool the inner tube 10
- a gas passes through the high-pressure flow path 21 formed by the spiral portion 12 of the inner tube 10 to heat-exchange with the inner tube 10 so that the gas is cooled and supplied into the vehicle.
- outer circumferential surface of the outer tube 20 has the same diameter as the diameter of the inner tube 10 , and enlarged portions 24 increased to a certain extent are formed at both ends of the outer circumferential surface of the outer tube 20 to which the inlet/outlet pipes 22 and 23 are coupled.
- any one of the enlarged portions 24 of the outer tube 20 collects a certain amount of gas such that the gas supplied through the inlet pipe 22 is continuously supplied to the high-pressure flow path 21 , and the other one collects a certain amount of gas such that the gas cooled by the heat exchange is continuously discharged through the outlet pipe 23 .
- a structure in which the enlarged portions 24 are formed at the outer tube 20 to collect the gas such that the gas is continuously supplied from the inlet pipe 22 and discharged to the outlet pipe 23 is problematic in that the enlarged portions 24 should be formed at a specific section of the outer tube 20 .
- formation of the enlarged portions 24 increases a volume of the outer tube 20 , and increases manufacturing costs and manufacturing time.
- a double tube type heat exchange pipe in which a gas or liquid coolant passes through a flow path hole to cool an inner tube, the gas or liquid coolant supplied through through-holes of an outer tube is collected at a first collecting groove formed in the inner tube, the gas or liquid coolant passes through a spiral groove of the inner tube to continuously collide with a plurality of protrusions to be cooled by heat exchange, and the cooled gas or liquid coolant is collected at a second collecting groove of the inner tube to be discharged through the through-holes of the outer tube.
- the present invention is directed to a double tube type heat exchange pipe including: a hollow inner tube having a flow path hole through which a gas or liquid coolant passes, an annular spiral groove formed at an outer surface thereof in a longitudinal direction at predetermined intervals, a plurality of protrusions protruding along the spiral groove, and first and second collecting grooves formed at both ends of the spiral groove and in which the gas or liquid coolant is collected; and a hollow outer tube adhered to an outer surface of the inner tube and having through-holes formed at both ends of an outer circumferential surface thereof and in communication with the first and second collecting grooves of the inner tube.
- the through-holes of the outer tube may have diameters smaller than widths of the first and second collecting grooves of the inner tube.
- a plurality of protrusions may protrude from outer surfaces of the first and second collecting grooves.
- the inner tube may be formed of any one of aluminum, copper and a copper alloy.
- the first and second collecting grooves may have any one of a hemispherical shape, an oval shape, and a polygonal shape.
- the protrusions may have any one of a circular shape, a hemispherical shape, an oval shape, and a polygonal shape.
- FIG. 1 is a cross-sectional view showing a conventional double tube type internal heat exchanger
- FIG. 2 is a schematic view showing a state in which a double tube type heat exchange pipe in accordance with the present invention is installed in a cooling apparatus for a vehicle;
- FIG. 3 is a perspective view showing the double tube type heat exchange pipe in accordance with the present invention.
- FIG. 4 is an exploded perspective view showing the double tube type heat exchange pipe in accordance with the present invention.
- FIG. 5 is a side cross-sectional view showing a state in which the double tube type heat exchange pipe in accordance with the present invention is used.
- FIG. 2 is a schematic view showing a state in which a double tube type heat exchange pipe in accordance with the present invention is installed in a cooling apparatus for a vehicle
- FIG. 3 is a perspective view showing the double tube type heat exchange pipe in accordance with the present invention
- FIG. 4 is an exploded perspective view showing the double tube type heat exchange pipe in accordance with the present invention
- FIG. 5 is a side cross-sectional view showing a state in which the double tube type heat exchange pipe in accordance with the present invention is used.
- a hollow inner tube 100 includes a flow path hole 101 through which a gas or liquid coolant passes, an annular spiral groove 102 formed in an outer surface thereof in a longitudinal direction at predetermined intervals, a plurality of protrusions 103 protruding along the spiral groove 102 , and first and second collecting grooves 104 a and 104 b formed at both ends of the spiral groove 102 to collect the gas or liquid coolant.
- the gas or liquid coolant passes through the flow path hole 101 of the inner tube 100 to be cooled.
- the inner tube 100 collects the gas or liquid coolant supplied from the outside to the first collecting groove 104 a to continuously supply the gas or liquid coolant to the spiral groove 102 , and collects the cooled gas or liquid coolant in the second collecting groove 104 b to continuously discharge the gas or liquid coolant to the outside.
- Widths of the first and second collecting grooves 104 a and 104 b may be larger than diameters of through-holes 201 of an outer tube 200 .
- the first and second collecting grooves 104 a and 104 b may have any one of a hemispherical shape, an oval shape, and a polygonal shape.
- a plurality of protrusions 103 ′ protrude from outer surfaces of the first and second collecting grooves 104 a and 104 b so that the gas or liquid coolant collected in the first collecting groove 104 a continuously collides with the protrusions 103 ′ to undergo heat exchange and be supplied to the spiral groove 102 to improve cooling efficiency, and the cooled gas or liquid coolant collected in the second collecting groove 104 b collides with the protrusions 103 ′ in the second collecting groove 104 b to be continuously cooled and discharged to the outside.
- the gas or liquid coolant passes through the spiral groove 102 of the inner tube 100 and collides with the plurality of protrusions 103 formed along the spiral groove 102 to be rapidly cooled.
- the interval and angle of the spiral groove 102 can be manufactured according to selection of a user.
- a cooling rate of the gas or liquid coolant varies according to the number of protrusions 103 and 103 ′ undergoing heat exchange with the gas, and the number of protrusions 103 and 103 ′ can be adjusted and manufactured according to selection of a user.
- the protrusions 103 and 103 ′ of the inner tube 100 may have any one of a circular shape, a hemispherical shape, an oval shape, and a polygonal shape.
- the inner tube 100 is formed of any one of aluminum, copper and a copper alloy.
- the inner tube 100 may be formed of a copper material having good thermal conductivity, and may be manufactured of a non-metallic material according to selection of a user.
- the outer tube 200 which is hollow, is adhered to an outer surface of the inner tube 100 , and has the through-holes 201 formed at both ends of an outer circumferential surface thereof to be in communication with the first and second collecting grooves 104 a and 104 b of the inner tube 100 .
- the outer tube 200 is adhered to the outer surface of the inner tube 100 to guide the gas or liquid coolant to the spiral groove 102 .
- the outer tube 200 receives the gas or liquid coolant supplied through either one of the through-holes 201 , and discharges the gas or liquid coolant through the other one of the through-holes 201 .
- the outer tube 200 includes an inlet pipe 301 and an outlet pipe 302 respectively installed in the through-holes 201 .
- the outer tube 200 may have a cylindrical shape with a flat outer surface.
- the through-holes 201 of the outer tube 200 have diameters smaller than widths of the first and second collecting grooves 104 a and 104 b of the inner tube 100 .
- the double tube type heat exchange pipe in accordance with the present invention configured as described above is used as follows, and an example in which the double tube type heat exchange pipe is installed in a cooling apparatus for a vehicle will be described.
- a compressor 400 configured to compress a gas
- a condenser 500 connected to the compressor 400 and configured to condense the gas ejected from the compressor 400 is installed.
- the outer tube 200 is connected to the condenser 500 to receive a liquid coolant having a high temperature and pressure ejected from the condenser 500
- the inner tube 100 is disposed in the outer tube 200 to guide the liquid coolant supplied to the outer tube 200 to the spiral groove 102 formed at the outer surface.
- An expansion valve 600 is connected to the outer tube 200 to depressurize and expand liquid coolant discharged through the spiral groove 102 of the inner tube 100 , converting the liquid coolant into a gas coolant having a low temperature and pressure.
- An evaporator 700 is connected to the expansion valve 600 to convert the gas coolant having a low temperature and pressure into liquid coolant having a low temperature and pressure.
- the evaporator 700 is connected to one end of the inner tube 100 to communicate with the flow path hole 101 , and the other end is connected to the compressor 400 .
- the gas having a high temperature and pressure ejected from the compressor 400 is supplied to the condenser 500 , and the liquid coolant having a high temperature and pressure condensed through the condenser 500 is supplied to the outer tube 200 .
- the liquid coolant having a high temperature and pressure supplied to the outer tube 200 is guided to the spiral groove 102 of the inner tube 100 and continuously collides with the plurality of protrusions 103 to be rapidly cooled, and the cooled liquid coolant is converted into the gas coolant having a low temperature and pressure through the expansion valve 600 to be supplied into the evaporator 700 .
- the liquid coolant having a low temperature and pressure ejected from the evaporator 700 passes through the flow path hole 101 of the inner tube 100 and is re-conveyed to the compressor 400 to cool the inner tube 100 , and the liquid coolant passing through the spiral groove 102 of the cooled inner tube 100 is cooled through heat exchange.
- the gas coolant having a low temperature and pressure introduced into the evaporator 700 undergoes heat exchange with the air blowing into the vehicle to evaporate and simultaneously cool the air blowing into the vehicle by the coolant absorbing latent heat of evaporation and being converted into the coolant having a low temperature and pressure.
- the liquid coolant supplied through the outer tube 200 is collected in the first collecting groove 104 a of the inner tube 100 , the liquid coolant collected in the first collecting groove 104 a is supplied into the spiral groove 102 to be cooled through heat exchange, the liquid coolant cooled via the spiral groove 102 is collected in the second collecting groove 104 b, and the liquid coolant collected in the second collecting groove 104 b is supplied into the expansion valve 600 through the through-holes 201 of the outer tube 200 .
- a flow of the liquid coolant supplied into the spiral groove 102 and the expansion valve 600 is continued by the liquid coolant collected in the first and second collecting grooves 104 a and 104 b.
- first and second collecting grooves 104 a and 104 b may have any one of a hemispherical shape, an oval shape, and a polygonal shape.
- first and second collecting grooves 104 a and 104 b of the inner tube 100 have widths larger than diameters of the through-holes 201 of the outer tube 200 , an amount of collected liquid coolant is increased to prevent a decrease in supply amount of the liquid coolant supplied into the spiral groove 102 and the expansion valve 600 .
- the plurality of protrusions 103 ′ protrude from outer surfaces of the first and second collecting grooves 104 a and 104 b so that the gas or liquid coolant collected in the first collecting groove 104 a continuously collides with the protrusions 103 ′ to be supplied into the spiral groove 102 after heat exchange to increase cooling efficiency, and the cooled gas or liquid coolant collected in the second collecting groove 104 b collides with the protrusions 103 ′ in the second collecting groove 104 b to be continuously cooled and discharged to the outside.
- the interval and angle of the spiral groove 102 may be adjusted and manufactured according to selection of a user.
- the cooling rate of the gas or liquid coolant varies according to the number of protrusions 103 and 103 ′ undergoing heat exchange with the gas, the number of protrusions 103 and 103 ′ can be adjusted and manufactured according to selection of a user, and the protrusions 103 and 103 ′ may have any one of a circular shape, a hemispherical shape, an oval shape, and a polygonal shape.
- the cooling rate of the gas or liquid coolant can vary according to the shape of the protrusions 103 and 103 ′.
- the inner tube 100 may be formed of any one of aluminum, copper and a copper alloy, preferably, a copper material having good thermal conductivity, or may be manufactured of a non-metallic material according to selection of user.
- the outer tube 200 is adhered to the outer surface of the inner tube 100 to guide the gas or liquid coolant to the spiral groove 102 , so that the gas or liquid coolant is supplied through either one of the through-holes 201 and the gas or liquid coolant is discharged through the other one of the through-holes 201 .
- the inlet pipe 301 and the outlet pipe 302 may be respectively installed in the through-holes 201 to guide supply and discharge of the liquid coolant.
- outer tube 200 may have a cylindrical shape with a flat outer surface.
- the through-holes 201 of the outer tube 200 have diameters smaller than widths of the first and second collecting grooves 104 a and 104 b of the inner tube 100 .
- the double tube type heat exchange pipe of the present invention is described herein as being installed in a cooling apparatus for a vehicle and used so that the liquid coolant having a low temperature and pressure passes through the flow path hole 101 of the inner tube 100 and the liquid coolant having a high temperature and pressure passes through the spiral groove 102 of the inner tube 100 to be cooled, a gas coolant may be supplied and used instead of the liquid coolant, depending on the cooling apparatus,.
- the gas or liquid coolant supplied through the through-holes 201 of the outer tube 200 is collected in the first collecting groove 104 a of the inner tube 100 to be supplied into the spiral groove 102 , and the gas or liquid coolant cooled via the spiral groove 102 is collected in the second collecting groove 104 b to be discharged through the through-holes 201 of the outer tube 200 .
- the gas or liquid coolant is collected in the first and second collecting grooves 104 a and 104 b of the inner tube 100 to enable easy continuous supply and discharge, and the through-holes 201 through which the gas or liquid coolant passes can be easily manufactured in the outer surface of the outer tube 200 through punching, and a volume of the outer tube 200 is minimized because there is no need of separate machining.
- the double tube type heat exchange pipe in accordance with the present invention has advantages as follows: the gas or liquid coolant is collected in the first and second collecting grooves of the inner tube to enable easy continuous supply and discharge, the through-holes through which the gas or liquid coolant passes can be easily manufactured in the outer surface of the outer tube through punching, a volume of the outer tube is minimized because there is no need of separate machining, manufacturing cost is reduced, and rapid manufacturing is possible.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
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- Thermal Sciences (AREA)
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Provided is a double tube type heat exchange pipe, in which a gas or liquid coolant passes through a flow path hole to cool an inner tube, the gas or liquid coolant supplied through through-holes of an outer tube is collected in a first collecting groove formed in an inner tube, the gas and liquid coolant is guided to a spiral groove of the inner tube and continuously collides with a plurality of protrusions to undergo heat exchange and be cooled, and the cooled gas and liquid coolant is collected in a second collecting groove of the inner tube to be discharged to the outside via the through-hole of the outer tube.
Description
- 1. Field of the Invention
- The present invention relates to a double tube type heat exchange pipe, and more particularly, to a double tube type heat exchange pipe having an inner tube with a spiral groove, through which a gas and a liquid pass, so that the gas and liquid continuously collide with a plurality of protrusions to be cooled by heat exchange, and the cooled gas and liquid are collected in a second collecting groove to be discharged through through-holes.
- 2. Discussion of Related Art
- In general, an air-conditioning apparatus used in a vehicle is configured to cool the inside of the vehicle in summertime, heat it in wintertime, or defrost a windshield in the rain or in wintertime, securing front and rear fields of vision of a driver.
- The air-conditioning apparatus includes both a heating system and a cooling system to selectively introduce outdoor air or indoor air to be heated or cooled and blown into the vehicle, cooling, heating or ventilating the inside of the vehicle. Here, the air-conditioning apparatus includes a double tube type internal heat exchanger configured to cool the air supplied into the vehicle.
FIG. 1 is a cross-sectional view showing the double tube type internal heat exchanger. - The double tube type internal heat exchanger includes an
inner tube 10 having a low-pressure flow path 11 formed therein and aspiral portion 12 formed at an outer surface thereof which accommodates high-pressure flow, and anouter tube 20 coupled to an outer circumferential surface of theinner tube 10 in a double tube structure to form a high-pressure flow path 21 whose both ends are coupled at their outer circumferential surfaces to inlet/outlet pipes - Here, coolant passes through the low-
pressure flow path 11 of theinner tube 10 to cool theinner tube 10, and a gas passes through the high-pressure flow path 21 formed by thespiral portion 12 of theinner tube 10 to heat-exchange with theinner tube 10 so that the gas is cooled and supplied into the vehicle. - In addition, the outer circumferential surface of the
outer tube 20 has the same diameter as the diameter of theinner tube 10, and enlargedportions 24 increased to a certain extent are formed at both ends of the outer circumferential surface of theouter tube 20 to which the inlet/outlet pipes - Further, any one of the enlarged
portions 24 of theouter tube 20 collects a certain amount of gas such that the gas supplied through theinlet pipe 22 is continuously supplied to the high-pressure flow path 21, and the other one collects a certain amount of gas such that the gas cooled by the heat exchange is continuously discharged through theoutlet pipe 23. - However, a structure in which the enlarged
portions 24 are formed at theouter tube 20 to collect the gas such that the gas is continuously supplied from theinlet pipe 22 and discharged to theoutlet pipe 23 is problematic in that the enlargedportions 24 should be formed at a specific section of theouter tube 20. In addition, formation of the enlargedportions 24 increases a volume of theouter tube 20, and increases manufacturing costs and manufacturing time. - In order to solve the above problems, it is an objective of the present invention to provide a double tube type heat exchange pipe, in which a gas or liquid coolant passes through a flow path hole to cool an inner tube, the gas or liquid coolant supplied through through-holes of an outer tube is collected at a first collecting groove formed in the inner tube, the gas or liquid coolant passes through a spiral groove of the inner tube to continuously collide with a plurality of protrusions to be cooled by heat exchange, and the cooled gas or liquid coolant is collected at a second collecting groove of the inner tube to be discharged through the through-holes of the outer tube.
- It is another objective of the present invention to provide a double tube type heat exchange pipe having an outer tube with through-holes of smaller diameters than widths of first and second collecting grooves of an inner tube so that a gas or liquid coolant is continuously supplied or discharged through through-holes of the outer tube.
- In order to accomplish these objectives, the present invention is directed to a double tube type heat exchange pipe including: a hollow inner tube having a flow path hole through which a gas or liquid coolant passes, an annular spiral groove formed at an outer surface thereof in a longitudinal direction at predetermined intervals, a plurality of protrusions protruding along the spiral groove, and first and second collecting grooves formed at both ends of the spiral groove and in which the gas or liquid coolant is collected; and a hollow outer tube adhered to an outer surface of the inner tube and having through-holes formed at both ends of an outer circumferential surface thereof and in communication with the first and second collecting grooves of the inner tube.
- In the double tube type heat exchange pipe in accordance with the present invention, the through-holes of the outer tube may have diameters smaller than widths of the first and second collecting grooves of the inner tube.
- In the double tube type heat exchange pipe in accordance with the present invention, a plurality of protrusions may protrude from outer surfaces of the first and second collecting grooves.
- In the double tube type heat exchange pipe in accordance with the present invention, the inner tube may be formed of any one of aluminum, copper and a copper alloy.
- In the double tube type heat exchange pipe in accordance with the present invention, the first and second collecting grooves may have any one of a hemispherical shape, an oval shape, and a polygonal shape.
- In the double tube type heat exchange pipe in accordance with the present invention, the protrusions may have any one of a circular shape, a hemispherical shape, an oval shape, and a polygonal shape.
- The above and other objects, features and advantages of the present invention will become more apparent to those of ordinary skill in the art by describing in detail example embodiments thereof with reference to the attached drawings, in which:
-
FIG. 1 is a cross-sectional view showing a conventional double tube type internal heat exchanger; -
FIG. 2 is a schematic view showing a state in which a double tube type heat exchange pipe in accordance with the present invention is installed in a cooling apparatus for a vehicle; -
FIG. 3 is a perspective view showing the double tube type heat exchange pipe in accordance with the present invention; -
FIG. 4 is an exploded perspective view showing the double tube type heat exchange pipe in accordance with the present invention; and -
FIG. 5 is a side cross-sectional view showing a state in which the double tube type heat exchange pipe in accordance with the present invention is used. - Hereinafter, example embodiments of the present invention will be described in detail with reference to the accompanying drawings.
-
FIG. 2 is a schematic view showing a state in which a double tube type heat exchange pipe in accordance with the present invention is installed in a cooling apparatus for a vehicle,FIG. 3 is a perspective view showing the double tube type heat exchange pipe in accordance with the present invention,FIG. 4 is an exploded perspective view showing the double tube type heat exchange pipe in accordance with the present invention, andFIG. 5 is a side cross-sectional view showing a state in which the double tube type heat exchange pipe in accordance with the present invention is used. - A hollow
inner tube 100 includes aflow path hole 101 through which a gas or liquid coolant passes, an annularspiral groove 102 formed in an outer surface thereof in a longitudinal direction at predetermined intervals, a plurality ofprotrusions 103 protruding along thespiral groove 102, and first and second collectinggrooves spiral groove 102 to collect the gas or liquid coolant. - The gas or liquid coolant passes through the
flow path hole 101 of theinner tube 100 to be cooled. - The
inner tube 100 collects the gas or liquid coolant supplied from the outside to the first collectinggroove 104 a to continuously supply the gas or liquid coolant to thespiral groove 102, and collects the cooled gas or liquid coolant in the second collectinggroove 104 b to continuously discharge the gas or liquid coolant to the outside. - Widths of the first and second collecting
grooves holes 201 of anouter tube 200. - The first and second collecting
grooves - A plurality of
protrusions 103′ protrude from outer surfaces of the first and second collectinggrooves groove 104 a continuously collides with theprotrusions 103′ to undergo heat exchange and be supplied to thespiral groove 102 to improve cooling efficiency, and the cooled gas or liquid coolant collected in the second collectinggroove 104 b collides with theprotrusions 103′ in the second collectinggroove 104 b to be continuously cooled and discharged to the outside. - The gas or liquid coolant passes through the
spiral groove 102 of theinner tube 100 and collides with the plurality ofprotrusions 103 formed along thespiral groove 102 to be rapidly cooled. - As an interval within the
spiral groove 102 of theinner tube 100 is reduced, a rate of a temperature change of the gas or liquid coolant cooled via thespiral groove 102 increases, and as the interval between thespiral groove 102 is increased, the variation speed of the gas or liquid coolant decreases. - The interval and angle of the
spiral groove 102 can be manufactured according to selection of a user. - In the
inner tube 100, a cooling rate of the gas or liquid coolant varies according to the number ofprotrusions protrusions - The
protrusions inner tube 100 may have any one of a circular shape, a hemispherical shape, an oval shape, and a polygonal shape. - The
inner tube 100 is formed of any one of aluminum, copper and a copper alloy. - The
inner tube 100 may be formed of a copper material having good thermal conductivity, and may be manufactured of a non-metallic material according to selection of a user. - The
outer tube 200, which is hollow, is adhered to an outer surface of theinner tube 100, and has the through-holes 201 formed at both ends of an outer circumferential surface thereof to be in communication with the first and second collectinggrooves inner tube 100. - The
outer tube 200 is adhered to the outer surface of theinner tube 100 to guide the gas or liquid coolant to thespiral groove 102. - The
outer tube 200 receives the gas or liquid coolant supplied through either one of the through-holes 201, and discharges the gas or liquid coolant through the other one of the through-holes 201. - The
outer tube 200 includes aninlet pipe 301 and anoutlet pipe 302 respectively installed in the through-holes 201. - The
outer tube 200 may have a cylindrical shape with a flat outer surface. - The through-
holes 201 of theouter tube 200 have diameters smaller than widths of the first and second collectinggrooves inner tube 100. - The double tube type heat exchange pipe in accordance with the present invention configured as described above is used as follows, and an example in which the double tube type heat exchange pipe is installed in a cooling apparatus for a vehicle will be described.
- First, a
compressor 400 configured to compress a gas is provided, and acondenser 500 connected to thecompressor 400 and configured to condense the gas ejected from thecompressor 400 is installed. Theouter tube 200 is connected to thecondenser 500 to receive a liquid coolant having a high temperature and pressure ejected from thecondenser 500, and theinner tube 100 is disposed in theouter tube 200 to guide the liquid coolant supplied to theouter tube 200 to thespiral groove 102 formed at the outer surface. Anexpansion valve 600 is connected to theouter tube 200 to depressurize and expand liquid coolant discharged through thespiral groove 102 of theinner tube 100, converting the liquid coolant into a gas coolant having a low temperature and pressure. Anevaporator 700 is connected to theexpansion valve 600 to convert the gas coolant having a low temperature and pressure into liquid coolant having a low temperature and pressure. Theevaporator 700 is connected to one end of theinner tube 100 to communicate with theflow path hole 101, and the other end is connected to thecompressor 400. Here, when the cooling apparatus is operated, the gas having a high temperature and pressure ejected from thecompressor 400 is supplied to thecondenser 500, and the liquid coolant having a high temperature and pressure condensed through thecondenser 500 is supplied to theouter tube 200. The liquid coolant having a high temperature and pressure supplied to theouter tube 200 is guided to thespiral groove 102 of theinner tube 100 and continuously collides with the plurality ofprotrusions 103 to be rapidly cooled, and the cooled liquid coolant is converted into the gas coolant having a low temperature and pressure through theexpansion valve 600 to be supplied into theevaporator 700. The liquid coolant having a low temperature and pressure ejected from theevaporator 700 passes through theflow path hole 101 of theinner tube 100 and is re-conveyed to thecompressor 400 to cool theinner tube 100, and the liquid coolant passing through thespiral groove 102 of the cooledinner tube 100 is cooled through heat exchange. - Here, the above-mentioned process is repeated to cool the air blowing into the vehicle.
- In addition, the gas coolant having a low temperature and pressure introduced into the
evaporator 700 undergoes heat exchange with the air blowing into the vehicle to evaporate and simultaneously cool the air blowing into the vehicle by the coolant absorbing latent heat of evaporation and being converted into the coolant having a low temperature and pressure. - Further, the liquid coolant supplied through the
outer tube 200 is collected in thefirst collecting groove 104 a of theinner tube 100, the liquid coolant collected in thefirst collecting groove 104 a is supplied into thespiral groove 102 to be cooled through heat exchange, the liquid coolant cooled via thespiral groove 102 is collected in thesecond collecting groove 104 b, and the liquid coolant collected in thesecond collecting groove 104 b is supplied into theexpansion valve 600 through the through-holes 201 of theouter tube 200. - Here, a flow of the liquid coolant supplied into the
spiral groove 102 and theexpansion valve 600 is continued by the liquid coolant collected in the first and second collectinggrooves - In addition, the first and second collecting
grooves - Meanwhile, as the first and second collecting
grooves inner tube 100 have widths larger than diameters of the through-holes 201 of theouter tube 200, an amount of collected liquid coolant is increased to prevent a decrease in supply amount of the liquid coolant supplied into thespiral groove 102 and theexpansion valve 600. - Here, the plurality of
protrusions 103′ protrude from outer surfaces of the first and second collectinggrooves first collecting groove 104 a continuously collides with theprotrusions 103′ to be supplied into thespiral groove 102 after heat exchange to increase cooling efficiency, and the cooled gas or liquid coolant collected in thesecond collecting groove 104 b collides with theprotrusions 103′ in thesecond collecting groove 104 b to be continuously cooled and discharged to the outside. - In addition, as the interval within the
spiral groove 102 of theinner tube 100 is reduced, a rate of a temperature change of the gas or liquid coolant cooled via thespiral groove 102 increases, and as the interval within thespiral groove 102 is increased, the rate of a temperature change of the cooled gas or liquid coolant decreases. - Here, the interval and angle of the
spiral groove 102 may be adjusted and manufactured according to selection of a user. - In addition, in the
inner tube 100, the cooling rate of the gas or liquid coolant varies according to the number ofprotrusions protrusions protrusions - Here, the cooling rate of the gas or liquid coolant can vary according to the shape of the
protrusions - In addition, the
inner tube 100 may be formed of any one of aluminum, copper and a copper alloy, preferably, a copper material having good thermal conductivity, or may be manufactured of a non-metallic material according to selection of user. - Next, the
outer tube 200 is adhered to the outer surface of theinner tube 100 to guide the gas or liquid coolant to thespiral groove 102, so that the gas or liquid coolant is supplied through either one of the through-holes 201 and the gas or liquid coolant is discharged through the other one of the through-holes 201. - Here, the
inlet pipe 301 and theoutlet pipe 302 may be respectively installed in the through-holes 201 to guide supply and discharge of the liquid coolant. - In addition, the
outer tube 200 may have a cylindrical shape with a flat outer surface. - Further, the through-
holes 201 of theouter tube 200 have diameters smaller than widths of the first and second collectinggrooves inner tube 100. - While the double tube type heat exchange pipe of the present invention is described herein as being installed in a cooling apparatus for a vehicle and used so that the liquid coolant having a low temperature and pressure passes through the flow path hole 101 of the
inner tube 100 and the liquid coolant having a high temperature and pressure passes through thespiral groove 102 of theinner tube 100 to be cooled, a gas coolant may be supplied and used instead of the liquid coolant, depending on the cooling apparatus,. - As described above, the gas or liquid coolant supplied through the through-
holes 201 of theouter tube 200 is collected in thefirst collecting groove 104 a of theinner tube 100 to be supplied into thespiral groove 102, and the gas or liquid coolant cooled via thespiral groove 102 is collected in thesecond collecting groove 104 b to be discharged through the through-holes 201 of theouter tube 200. Accordingly, the gas or liquid coolant is collected in the first and second collectinggrooves inner tube 100 to enable easy continuous supply and discharge, and the through-holes 201 through which the gas or liquid coolant passes can be easily manufactured in the outer surface of theouter tube 200 through punching, and a volume of theouter tube 200 is minimized because there is no need of separate machining. - As can be seen from the foregoing, the double tube type heat exchange pipe in accordance with the present invention has advantages as follows: the gas or liquid coolant is collected in the first and second collecting grooves of the inner tube to enable easy continuous supply and discharge, the through-holes through which the gas or liquid coolant passes can be easily manufactured in the outer surface of the outer tube through punching, a volume of the outer tube is minimized because there is no need of separate machining, manufacturing cost is reduced, and rapid manufacturing is possible.
- While the invention has been shown and described with reference to certain example embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A double tube type heat exchange pipe comprising:
a hollow inner tube (100) having a flow path hole (101) through which a gas or liquid coolant passes, an annular spiral groove (102) formed at an outer surface thereof in a longitudinal direction at predetermined intervals, a plurality of protrusions (103) protruding along the spiral groove (102), and first and second collecting grooves (104 a, 104 b) formed at both ends of the spiral groove (102) and in which the gas or liquid coolant is collected; and
a hollow outer tube (200) adhered to an outer surface of the inner tube (100) and having through-holes (201) formed at both ends of an outer circumferential surface thereof and in communication with the first and second collecting grooves (104 a, 104 b) of the inner tube (100).
2. The double tube type heat exchange pipe according to claim 1 , wherein the through-holes (201) of the outer tube (200) have diameters smaller than widths of the first and second collecting grooves (104a, 104b) of the inner tube (100).
3. The double tube type heat exchange pipe according to claim 1 , wherein a plurality of protrusions (103′) protrude from outer surfaces of the first and second collecting grooves (104 a, 104 b).
4. The double tube type heat exchange pipe according to claim 1 , wherein the inner tube (100) is formed of any one of aluminum, copper and a copper alloy.
5. The double tube type heat exchange pipe according to claim 1 , wherein the first and second collecting grooves (104 a, 104 b) have any one of a hemispherical shape, an oval shape, and a polygonal shape.
6. The double tube type heat exchange pipe according to claim 1 , wherein the protrusions (103) have any one of a circular shape, a hemispherical shape, an oval shape, and a polygonal shape.
7. The double tube type heat exchange pipe according to claim 3 , wherein the protrusions (103′) have any one of a circular shape, a hemispherical shape, an oval shape, and a polygonal shape.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2020110006795U KR200459178Y1 (en) | 2011-07-26 | 2011-07-26 | Double tube type heat exchange pipe |
KR20-2011-0006795 | 2011-07-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20130025834A1 true US20130025834A1 (en) | 2013-01-31 |
Family
ID=46578928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/547,442 Abandoned US20130025834A1 (en) | 2011-07-26 | 2012-07-12 | Double tube type heat exchange pipe |
Country Status (6)
Country | Link |
---|---|
US (1) | US20130025834A1 (en) |
EP (1) | EP2551622A3 (en) |
JP (1) | JP2013029303A (en) |
KR (1) | KR200459178Y1 (en) |
CN (1) | CN102901382A (en) |
RU (1) | RU2012129344A (en) |
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US20150224561A1 (en) * | 2010-08-18 | 2015-08-13 | Halla Visteon Climate Control Corp. | Double pipe type heat exchanger and method for manufacturing the same |
US20150338126A1 (en) * | 2013-01-02 | 2015-11-26 | Swerea Mefos Ab | Pressure vessel and method of heating a gas in a pressurised pipe |
WO2016011090A1 (en) * | 2014-07-14 | 2016-01-21 | Toma Hani | Evaporator with heat exchange |
WO2019050258A1 (en) * | 2017-09-06 | 2019-03-14 | Contitech Fluid Korea Ltd. | Double tube for heat exchange |
US20190100079A1 (en) * | 2016-03-21 | 2019-04-04 | Pyongsan Corp. | Internal heat exchanger double-tube structure of air conditioning system having alternative refrigerant applied thereto |
US10525414B2 (en) * | 2015-05-29 | 2020-01-07 | Sumitomo Chemical Company, Limited | Spiral-wound acid gas separation membrane element, acid gas separation membrane module, and acid gas separation apparatus |
US10982796B2 (en) * | 2017-08-18 | 2021-04-20 | Han Yong Cho | Dual pipe |
US11060795B2 (en) * | 2016-05-20 | 2021-07-13 | Contitech Fluid Korea Ltd. | Double tube for heat exchange |
CN113758060A (en) * | 2021-08-23 | 2021-12-07 | 陈胜举 | Evaporative condenser for refrigerating system |
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GB2523107A (en) * | 2014-02-12 | 2015-08-19 | Eaton Ind Ip Gmbh & Co Kg | Heat exchanger |
EP3290854B1 (en) * | 2015-04-28 | 2021-12-22 | Panasonic Intellectual Property Management Co., Ltd. | Heat exchanger and refrigeration cycle device using same |
CN106556266B (en) * | 2015-09-25 | 2019-04-23 | 格朗吉斯铝业(上海)有限公司 | Aluminium heater, its manufacturing method and the refrigeration system including this aluminium heater |
KR101797177B1 (en) * | 2016-03-21 | 2017-12-01 | 주식회사 평산 | Double pipe heat exchanger method of maufacturing and the double pipe |
WO2017164456A1 (en) * | 2016-03-25 | 2017-09-28 | 콘티테크플루이드코리아 유한회사 | Double pipe for heat exchange |
KR101759110B1 (en) * | 2016-08-10 | 2017-07-19 | 주식회사 화승알앤에이 | Double pipe heat exchanger and method for manufacturing the same |
KR20190001142A (en) * | 2017-06-26 | 2019-01-04 | 엘지전자 주식회사 | Heat Exchanger |
KR20230090547A (en) | 2021-12-15 | 2023-06-22 | 주식회사 신영씨티씨 | Heat exchange pipe |
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Cited By (14)
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US20150224561A1 (en) * | 2010-08-18 | 2015-08-13 | Halla Visteon Climate Control Corp. | Double pipe type heat exchanger and method for manufacturing the same |
US9821364B2 (en) * | 2010-08-18 | 2017-11-21 | Hanon Systems | Double pipe type heat exchanger and method for manufacturing the same |
US20150338126A1 (en) * | 2013-01-02 | 2015-11-26 | Swerea Mefos Ab | Pressure vessel and method of heating a gas in a pressurised pipe |
WO2016011090A1 (en) * | 2014-07-14 | 2016-01-21 | Toma Hani | Evaporator with heat exchange |
US9568229B2 (en) | 2014-07-14 | 2017-02-14 | Hani Toma | Evaporator with heat exchange |
US10525414B2 (en) * | 2015-05-29 | 2020-01-07 | Sumitomo Chemical Company, Limited | Spiral-wound acid gas separation membrane element, acid gas separation membrane module, and acid gas separation apparatus |
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CN113758060A (en) * | 2021-08-23 | 2021-12-07 | 陈胜举 | Evaporative condenser for refrigerating system |
CN113758060B (en) * | 2021-08-23 | 2022-12-23 | 深圳英创能源环境技术有限公司 | Evaporative condenser for refrigerating system |
Also Published As
Publication number | Publication date |
---|---|
JP2013029303A (en) | 2013-02-07 |
KR200459178Y1 (en) | 2012-03-22 |
CN102901382A (en) | 2013-01-30 |
EP2551622A3 (en) | 2014-06-11 |
RU2012129344A (en) | 2014-01-20 |
EP2551622A2 (en) | 2013-01-30 |
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