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WO2010010591A2 - Séchoir pour gaz comprimé et procédé de production du séchoir - Google Patents

Séchoir pour gaz comprimé et procédé de production du séchoir Download PDF

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Publication number
WO2010010591A2
WO2010010591A2 PCT/IT2009/000326 IT2009000326W WO2010010591A2 WO 2010010591 A2 WO2010010591 A2 WO 2010010591A2 IT 2009000326 W IT2009000326 W IT 2009000326W WO 2010010591 A2 WO2010010591 A2 WO 2010010591A2
Authority
WO
WIPO (PCT)
Prior art keywords
drier
sides
compressed gas
flattening direction
fins
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.)
Ceased
Application number
PCT/IT2009/000326
Other languages
English (en)
Other versions
WO2010010591A3 (fr
Inventor
Stefano Bernardinello
Andrea Bottazzo
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.)
MTA SpA
Original Assignee
MTA SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MTA SpA filed Critical MTA SpA
Publication of WO2010010591A2 publication Critical patent/WO2010010591A2/fr
Publication of WO2010010591A3 publication Critical patent/WO2010010591A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F28D7/04—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 spirally coiled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/265—Drying gases or vapours by refrigeration (condensation)
    • 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
    • B21D53/027—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers by helically or spirally winding elongated elements
    • 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
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
    • 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
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/16—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being integral with the element, e.g. formed by extrusion
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0038—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for drying or dehumidifying gases or vapours
    • 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
    • F28F2255/16—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes extruded

Definitions

  • the present invention relates to a drier for compressed gas of the type including the features set out in the preamble of the main claim and a method for producing the exchanger itself.
  • the present invention is particularly, though not exclusively, suitable for driers having small dimensions and low levels of power.
  • Those passages can be, for example, of the type having mini-channels and/or micro-channels, as described in Italian patent applications PD2007A000250 and PD2007A000251 by the same applicant.
  • a drier of the above-described type is a solution which can readily be implemented for installed power levels in the order of 1 kW or above.
  • driers of low power are typically used in thermal plants or machines of small dimensions, it is necessary for such driers also to have small dimensions and compact forms which are impossible to obtain with the solutions described in the two patent applications set out above since the constructions with mini-channels and/or micro-channels are characterized by a main spatial requirement in a main longitudinal direction.
  • the main object of the present invention is to provide a drier for compressed gas and a method for producing that drier which are configured to overcome all the disadvantages set out with reference to the cited prior art, in such a manner as to provide a drier for compressed gas of low power which is simple and compact, with at least the same thermal efficiency as solutions having greater power,
  • This object and other objects which will be appreciated from the following are addressed and achieved by the invention by means of a drier for compressed gas and a method for producing that drier which are constructed in accordance with the appended claims.
  • FIG. 1 is an axonometric view of a drier for compressed gas constructed in accordance with the invention
  • Figures 2 and 3 are two axonometric sections of two details of the drier of Figure 1, respectively;
  • Figure 4 is an axonometric top view of a component of the drier of Figure 1;
  • - Figure 5 is an axonometric bottom view of the component of Figure 4;
  • - Figures 6 and 7 are two views, a side view and an axonometric section, of a component of the drier of Figure 1, respectively;
  • a drier for compressed gas in particular compressed air, is generally designated 1.
  • the drier 1 comprises a housing 2 having a cylindrical outer surface 3 with an axis X and two curved ends 4a, b which are axially opposed. There are provided in the curved end 4a an intake pipe 5 for a flow 6 of moist air to be dried and a discharge pipe 7 for a flow 8 of dry air. There are provided on the curved end 4b a discharge pipe 9 for the condensate and two pipes 10, 11 for the intake and discharge of a flow 12 of coolant fluid, respectively.
  • the drier 1 comprises an exchanger 13 which includes a first exchange element 14 for pre-exchange adjacent to the curved end 4a, a second exchange element 15 which acts as an evaporator and a space 16 for collecting the condensate, adjacent to the curved end 4b.
  • the first exchange element 14 is of double-spiral-like form obtained by winding about the axis X two extrusion profiles 16 which are positioned beside each other.
  • the second exchange element 15 is in the form of a spiral obtained by winding about the axis X an extrusion profile 17.
  • the extrusion profiles 16, 17 have a flattened cross-section in two flattening directions Y and Z which are arranged parallel with the axis X, respectively.
  • the flattened sections of the extrusion profiles 16, 17 are each provided with two mutually opposing sides 18a, b and 19a, b which are parallel with the flattening directions Y and Z, respectively.
  • the sides 18a and 19a are directed towards the axis X and the sides 18b and 19b are directed the other way.
  • Two fins 20a, b and 21a, b extend from the sides 18a and 19a, respectively, and are orthogonal relative to the flattening directions Y and Z and are regularly spaced-apart along the same axes Y and Z.
  • Three fins 22a, b,c and 23a, b,c extend from the sides 18b and 19b, respectively, and are orthogonal relative to the flattening directions Y and Z and are regularly spaced apart along the same axes Y and Z. All the fins 20a,b, 21a, b and 22a, b,c, 23a, b,c are of equal length in the direction orthogonal relative to the flattening directions Y and Z and are provided in such a manner that each of the fins 20a, b and 21a, b is spaced, in accordance with the flattening directions Y and Z, apart from each of the fins 22a, b,c and 23a, b, c, respectively.
  • the ends of the fins at the sides 18a and 19a are placed in contact with the sides 18b and 19b ( Figure 6), respectively, so as to produce several pluralities of spiral passages which are mutually parallel and positioned side by side along the axis X, and through which the same heat exchange fluid flows.
  • the first exchange element 14 comprises two pluralities of passages 24, 25 which are delimited by the extrusion profiles 16 and which continue as two diametrically opposed outer ends 16a, b of the exchange element 14 having two substantially semi-cylindrical cavities 26, 27 which are positioned at the centre of the exchange element 14 and which are separated by a wall 26a.
  • the two pluralities of passages 24, 25 receive the flow of air 6 to be dried and a flow of cold dry air from the space 16, respectively.
  • the side 18a is in contact with one or other of the fluids in the passages 24, 25 and the side 18b is in contact with the other of the two fluids in the passages 24, 25.
  • the exchange 13 comprises two circular plates 28, 29, an upper plate and an intermediate plate, respectively, which are orthogonal relative to the axis X and between which there are interposed the extrusion profiles 16 of the pre- exchange element 14.
  • the upper plate 28 is directed towards the end 4a and comprises two openings 30, 31 for connection between the intake pipe 5 and the passages 24 and between the semi-cylindrical cavity 27 and the discharge pipe 7.
  • the intermediate plate 29 comprises a central opening 32 for connection between the semi-cylindrical cavity 26 and a cavity 15a which is positioned at the centre of the second exchange element 15.
  • the second exchange element 15 comprises a plurality of passages 33 which are delimited by the sides 19a, b and by the fins 21a, b and 23a, b,c and through which the cooled moist air from the passages 24 travels through the opening 32.
  • the spiral passages 33 extend from an end 33a, which is adjacent to the cavity 15a, to an opposite end 33b which is positioned at the perimeter of the exchange element 15.
  • the passages 33 are in thermal contact with a plurality of passages 34, of the type having mini-channels and/or micro-channels, which are formed in the section of the extrusion profile 17 and in which the coolant fluid flows from the intake pipe 10, flowing through the passages 34 from one end 34a, positioned along the perimeter of the element 15 at the end 33b, to the opposite end 34b, positioned at the centre of the element 15, at the end 33a.
  • the drier 1 comprises two connection tubes 35, 36 which are positioned between the pipe 10 and the end 34a and between the end 34b and the discharge pipe 11, respectively.
  • the exchanger 13 comprises a lower circular plate 37 which is orthogonal relative to the axis X, the extrusion profile 17 of the element 15 being interposed between the plates 29 and 37.
  • the lower plate 37 comprises two openings 38, 39 which are connected to the connection tubes 35, 36 for the passage of the coolant fluid from and towards the exchange element 15, respectively.
  • the lower plate 37 comprises another opening 40, in an outer connection position between the end 33b of the passages 33 and the space 16.
  • turbulence-inducing insert 100 which is adjacent to the sides 19a, b, which is of metal tubing or is constituted by a bundle of long and fine metal filings, for example, of steel.
  • the insert 100 allows an increase in the turbulence inside the pipes 33, thereby increasing the efficiency of the thermal exchange at the same time.
  • the sides 19a, b of the extrusion profile 17 do not have fins and there is therefore provided a single spiral passage 133 which is delimited by the sides 19a, b and the plates 29 and 37 and through which the cooled moist air from the passages 24 flows.
  • a turbulence-inducing insert 200 which is adjacent to the sides 19a, b, which is of metal tubing or is constituted by a bundle of long and fine metal filings, for example, of steel.
  • a method for producing the exchange element 14 comprises the steps of: a) extruding two extrusion profiles having a geometry corresponding to that of the extrusion profile 16; b) winding in a spiral manner the extrusion profiles of the preceding step a) about the axis X parallel with the flattening direction Y of the extrusion profile 16, so that the ends of the extrusion profiles positioned along the perimeter of the spiral are diametrically opposed.
  • a method for producing the exchange element 15 comprises the steps of: c) extruding an extrusion profile having a geometry corresponding to that of the extrusion profile 17, in which there are formed a plurality of passages having mini-channels and/or micro-channels; d) winding in a spiral manner the extrusion profile of the preceding step c) about the axis X parallel with the flattening direction Z of the extrusion profile 17.
  • the exchanger 13 is simply produced by positioning the plate 28, the exchange element 14, the plate 29, the exchange element 15, the pipes 41, 42 and the plate 37 close together, in that order, so that the opening 32 is positioned at the semi- cylindrical cavity 26 and the pipes 41, 42 allow the cold dry air from the space 16 to be introduced into the exchange element 14 at the end 16b of the passages 25.
  • the complete drier 1 is obtained in a similarly simple manner by connecting the tubes 35, 36 to the openings 38, 39 of the plate 37, inserting the assembly obtained in this manner into the cylindrical outer surface 3 and connecting to the cylindrical outer surface 3 the curved ends 4a, 4b comprising the pipes 5, 7, 9, 10 and 11, respectively.
  • the invention overcomes the problem set out with reference to the cited prior art, allowing a drier for compressed gas to be obtained having low power and compact dimensions, with a simple construction, and, at the same time, allowing production costs to be kept in check.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Drying Of Gases (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

Un séchoir pour gaz comprimé comprend au moins un élément d'échange de forme spirale qui est produit par un profil d'extrusion à section aplatie enroulé dans une direction d'aplatissement. La section est pourvue de deux côtés opposés qui sont parallèles à la direction d'aplatissement et de chacun des côtés s'étend au moins une ailette qui est orthogonale à la direction d'aplatissement, les ailettes étant de longueur égale dans la direction orthogonale par rapport à la direction d'aplatissement et étant espacées les unes des autres dans la direction d'aplatissement.
PCT/IT2009/000326 2008-07-24 2009-07-22 Séchoir pour gaz comprimé et procédé de production du séchoir Ceased WO2010010591A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPD2008A000222 2008-07-24
ITPD2008A000222A IT1393386B1 (it) 2008-07-24 2008-07-24 Essiccatore per gas compressi e metodo di produzione di detto scambiatore

Publications (2)

Publication Number Publication Date
WO2010010591A2 true WO2010010591A2 (fr) 2010-01-28
WO2010010591A3 WO2010010591A3 (fr) 2010-05-06

Family

ID=40888190

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2009/000326 Ceased WO2010010591A2 (fr) 2008-07-24 2009-07-22 Séchoir pour gaz comprimé et procédé de production du séchoir

Country Status (2)

Country Link
IT (1) IT1393386B1 (fr)
WO (1) WO2010010591A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012177584A1 (fr) * 2011-06-20 2012-12-27 Praxair Technology, Inc. Système et procédé de condensation cryogénique
WO2018225592A1 (fr) * 2017-06-08 2018-12-13 Smc株式会社 Échangeur de chaleur à air comprimé, unité de déshumidification utilisant un échangeur de chaleur et système de déshumidification pourvu d'une unité de déshumidification

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023108228A1 (de) * 2023-03-30 2024-10-02 Kaeser Kompressoren Se Wärmetauscher eines Adsorptionstrockners

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3007680A (en) * 1959-07-02 1961-11-07 William E Harris Heat exchange device
US3340588A (en) * 1960-10-19 1967-09-12 Heinz E Mueller Method of making heat exchangers
US4287724A (en) * 1979-12-17 1981-09-08 Morehouse Industries, Inc. Air chiller/drier
DE3422088A1 (de) * 1984-06-14 1985-12-19 Etablissement Agura, Vaduz Gasheizofen mit einem spiralig geformten rauchzug
GB2193567B (en) * 1986-08-06 1990-09-19 Samsung Electronics Co Ltd Heat exchanger
US20020092646A1 (en) * 2000-01-07 2002-07-18 Carsten Kuhn Spiral heat exchanger
JP2007017132A (ja) * 2005-07-11 2007-01-25 Denso Corp 熱交換用チューブおよび熱交換器

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012177584A1 (fr) * 2011-06-20 2012-12-27 Praxair Technology, Inc. Système et procédé de condensation cryogénique
WO2018225592A1 (fr) * 2017-06-08 2018-12-13 Smc株式会社 Échangeur de chaleur à air comprimé, unité de déshumidification utilisant un échangeur de chaleur et système de déshumidification pourvu d'une unité de déshumidification
JP2018204914A (ja) * 2017-06-08 2018-12-27 Smc株式会社 圧縮空気用の熱交換器、その熱交換器を用いた除湿ユニット、及びその除湿ユニットを備えた除湿システム
CN110720019A (zh) * 2017-06-08 2020-01-21 Smc株式会社 压缩空气用的热交换器、使用了该热交换器的除湿单元、以及具备该除湿单元的除湿系统
US11135548B2 (en) 2017-06-08 2021-10-05 Smc Corporation Compressed-air heat exchanger, dehumidification unit using heat exchanger, and dehumidification system provided with dehumidification unit
RU2759885C2 (ru) * 2017-06-08 2021-11-18 ЭсЭмСи КОРПОРЕЙШН Теплообменник сжатого воздуха, установка осушения с использованием этого теплообменника и система осушения, снабженная установкой осушения
TWI756429B (zh) * 2017-06-08 2022-03-01 日商Ｓｍｃ股份有限公司 壓縮空氣用的熱交換器、使用該熱交換器的除濕單元、及具備該除濕單元的除濕系統

Also Published As

Publication number Publication date
WO2010010591A3 (fr) 2010-05-06
ITPD20080222A1 (it) 2010-01-25
IT1393386B1 (it) 2012-04-20

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