WO2010144032A1 - Rotor pour échangeur de chaleur rotatif et procédé de fabrication de ce rotor - Google Patents

Rotor pour échangeur de chaleur rotatif et procédé de fabrication de ce rotor Download PDF

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Publication number
WO2010144032A1
WO2010144032A1 PCT/SE2010/050603 SE2010050603W WO2010144032A1 WO 2010144032 A1 WO2010144032 A1 WO 2010144032A1 SE 2010050603 W SE2010050603 W SE 2010050603W WO 2010144032 A1 WO2010144032 A1 WO 2010144032A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
peripheral
radial
sections
clamping means
Prior art date
Application number
PCT/SE2010/050603
Other languages
English (en)
Inventor
Mikael Swanteson
Original Assignee
Heatex Ab
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 Heatex Ab filed Critical Heatex Ab
Publication of WO2010144032A1 publication Critical patent/WO2010144032A1/fr

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
    • F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
    • F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
    • F28D19/041—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier with axial flow through the intermediate heat-transfer medium
    • F28D19/042—Rotors; Assemblies of heat absorbing masses
    • F28D19/044—Rotors; Assemblies of heat absorbing masses shaped in sector form, e.g. with baskets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/08—Fastening; Joining by clamping or clipping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/20—Fastening; Joining with threaded elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply

Definitions

  • the present invention relates to a rotor of a rotating heat exchanger having an essential cylindrical shape and comprising at least two sections, arranged around an axis and being provided with at least one peripheral element, at least one radial element, located between adjacent sections, and clamping means, for fastening the at least two sections of the rotor.
  • the rotating heat exchangers are mainly used to recover heat in exhaust air leaving a ventilation system of a building, but are also, for instance, used in systems for climate control, dehumidification and humidification.
  • Rotating heat exchangers come in a large variety of sizes, having air handling capacities of typically 500 m 3 /h to 100 000 m 3 /h.
  • the largest rotating heat exchangers can have diameters of 4-6 m.
  • the rotors are cut into sections in the shape of a pie pieces.
  • the sections can then be individually transported to the site where the heat exchanger is about to be mounted. At the mounting site the sections are put together to form a rotor.
  • Radial elements in form of spokes for example, made of flat bar iron are placed between each section.
  • the outer periphery of each section is covered by a peripheral element, for instance in form of a metal band or flexible metal sheet. The radial elements and the peripheral elements are then connected and locked to each other in order to lock all sections of the rotor together.
  • An increase in radial element tension often leads to a reduction of the peripheral element tension.
  • stepwise adjustment is required. The tension is therefore difficult to check.
  • there can even be compressive forces in either the radial elements or the peripheral elements which can lead to mechanical instability of the rotor.
  • At least one clamping means connected to the radial element and to the peripheral elements of said adjacent sections, simultaneously applies tension to said radial element and said peripheral elements when tightened, whereby the peripheral elements being pulled against each other by sliding along an inclined surface.
  • the clamping means is fastened to the radial element and being connected to at least two peripheral elements. Two, or more, peripheral elements make the rotor more stable since they function as additional support on the periphery of the rotor.
  • the fastening means can comprise a tensioning block and a tightening device.
  • the radial element has a threaded portion, located at its external end, related to the centre axis of the rotor. This is yet another simple solution for fastening the tensioning block on the radial elements.
  • the peripheral element covers, at least partly, the periphery of said section. This increases the stability of the rotor.
  • the peripheral element is provided with a wedge shaped protrusion arranged at least at one end of the peripheral element, said protrusion having an inclined surface, which being intended to engage into the tensioning block.
  • the peripheral element can as an alternative have one end of the peripheral element bent outwards from said periphery, in a radial direction, to form an inclined surface, which being intended to engage into said tensioning block. This is also a fast and simple way of locking the peripheral elements into the tensioning block, as no other fastening means are needed. This solution is also requires less material and labour.
  • Another aspect of the invention is a method for manufacturing a rotor for a rotating heat exchanger, wherein the rotor is divided into at least two sections, at least one radial element is arranged between each two adjacent sections, and a clamping means is provided, wherein when tightening the clamping means, tension being applied simultaneously to at least said radial element and to a periphery of at least two adjacent sections, whereby the peripheral elements being pulled against each other by sliding along an inclined surface.
  • the clamping means tension being applied simultaneously to at least said radial element and to a periphery of at least two adjacent sections, whereby the peripheral elements being pulled against each other by sliding along an inclined surface.
  • Figure 1 shows a schematically partial side view of a rotor according to the present invention.
  • Figure 2 shows an enlarge cross section view of two embodiments of a clamping means of the rotor according to figure 1.
  • Figure 3 shows a schematically view from above of the clamping means of the rotor according to figure 1.
  • Figure 1 shows two sections 2 of a rotor 1 according to the present invention.
  • a number of such sections 2 are mounted on a circular centre axis 3 to form the rotor 1 in an essentially cylindrical shape.
  • the rotor 1 having radial elements 4 located between two adjacent sections 2 and a number of peripheral elements 5 located towards a periphery 7 of the rotor 1.
  • a clamping means 6 connected to the radial element 4 and to the peripheral elements 5 being used for holding the sections 2 together.
  • the rotor 1 itself is made of alternating layers of corrugated and flat aluminium sheets (not shown in detail) suitable for heat transfer.
  • the rotor 1 is created by winding one corrugated and one flat aluminium sheet around the axis 3. This means that every second layer is a flat sheet and every second layer is a corrugated sheet.
  • the two sheets form a spiral (not shown in detail) building up the rotor 1.
  • the sections 2 are then created by simply cutting up the rotor 1 , into pie-shaped sections 2. Each section 2 is self-supporting and no additional elements are needed in order to maintain the shape of the sections 2.
  • the rotor 1 consists of at least two pie-shaped sections 2, mounted to the circular centre axis 3, forming an essential cylindrical rotor 1.
  • the number of pie-shaped sections 2 depends on the size of the rotor 1.
  • a smaller rotor 1 having a diameter up to 2.5 m, as an example, may be divided in up to six pie-shaped sections 2.
  • a larger rotor 1 having a diameter of 6,0 m, as an example, may have twelve pie-shaped sections 2 and each such section 2 may also be divided into several elements (not showed) in the radial direction of the rotor 1.
  • the rotor 1 having eight pie-shaped sections 2.
  • At least one radial element 4 is mounted between adjacent sections 2, the radial element 4 having a length of at least a majority of the radial length of the sections 2.
  • the radial element 4 is mounted, at one end, to the centre axis 3.
  • the radial element 4 extends, from the centre axis 3, in a radial direction towards the outer periphery 7 of the rotor 1.
  • Clamping means 6 are applied in order to connect the radial element 4 to the peripheral elements 5.
  • the peripheral element 5 is shaped as an arch in order to abut the outer periphery 7 of the rotor 1.
  • the peripheral element 5 covers at least partly the periphery 7 of a section 2.
  • the radial element 4 is provided with one or several threaded portions 9, fastened in relation to the centre axis 3 of the rotor 1 , to an exterior end 8 of the radial element 4 by welding or in other known manner.
  • the peripheral elements 5 are, in one embodiment of the invention, provided with a bent end portion to form an outwardly inclined surface 10a or in another embodiment of the invention, provided with wedge shaped protrusions 11 , having an inclined surface 10b, and being fastened at the end of each peripheral element 5, i.e. where the peripheral elements 5 meet the radial elements 4.
  • the clamping means 6 comprising a tension block 12, having an inner conical surface 13 shaped to match the inclined surface 10a and 10b on the peripheral elements 5 or the protrusions 11.
  • the tension block 12 is intended to lock the peripheral elements 5, at assembly of the radial elements 4 to the rotor 1 , and at tightening of the clamping means 6 the inclined surface 10a or 10b sliding against the conical surface 13, whereby the peripheral elements being pulled against each other.
  • the tension block 12 is pulled down towards the centre of the rotor 1 and sliding along the inclined surface 10a or 10b, tightening the radial elements 4 and at the same time pulling two adjacent peripheral elements 5 together.
  • at least one clamping means 6, connected to the radial element 4 and to the peripheral elements 5 of said adjacent sections will upon tightening simultaneously applies tension to said radial element 4 and said peripheral elements 5.
  • each radial element 4 have a separate tension block 12 located close to each side of the rotor 1 , but it is also possible to use only one tension block, which extends across the width of the rotor 1 , and having a centrally located screw.
  • the inclined surface 10a or 10b may extend across the entire width of the rotor 1 or at discrete positions preferably located close to each side of the rotor 1.
  • the tightening device must not be a screw or a threaded means.
  • Various kinds of quick locks can advantageously be utilized. It is, for instance, also possible to let the outer portion of the radial element protrude through the tension block, and for instance use a nut to tighten the radial element and thus also the peripheral elements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

La présente invention porte sur un rotor (1) d'un échangeur de chaleur rotatif, dont la forme est principalement cylindrique et qui comporte au moins deux sections (2), disposées autour d'un axe (3) et pourvues au moins d'un élément périphérique (5), au moins d'un élément radial (4), disposé entre des sections adjacentes (2), et de moyens de serrage (6), pour fixer les deux sections (2), ou plus, du rotor (1). Selon l'invention, au moins l'un des moyens de serrage (6), relié à l'élément radial (4) et aux éléments périphériques (5) desdites sections adjacentes, applique simultanément une tension sur ledit élément radial (4) et lesdits éléments périphériques (5) lors du serrage, tirant ainsi les éléments périphériques (5) les uns contre les autres par coulissement le long d'une surface inclinée (10a, 10b).
PCT/SE2010/050603 2009-06-10 2010-06-02 Rotor pour échangeur de chaleur rotatif et procédé de fabrication de ce rotor WO2010144032A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0950440A SE533839C2 (sv) 2009-06-10 2009-06-10 Rotor för en roterande värmeväxlare och en metod för att tillverka en sådan rotor
SE0950440-8 2009-06-10

Publications (1)

Publication Number Publication Date
WO2010144032A1 true WO2010144032A1 (fr) 2010-12-16

Family

ID=43309095

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2010/050603 WO2010144032A1 (fr) 2009-06-10 2010-06-02 Rotor pour échangeur de chaleur rotatif et procédé de fabrication de ce rotor

Country Status (2)

Country Link
SE (1) SE533839C2 (fr)
WO (1) WO2010144032A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015189410A1 (fr) 2014-06-13 2015-12-17 Amarant Industri Ab Roue thermique
US11041679B2 (en) 2019-01-21 2021-06-22 Johnson Controls Technology Company Energy recovery wheel assembly for an HVAC system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6422299B1 (en) * 2001-11-06 2002-07-23 Thermotech Enterprises, Inc. Wheel system for an air handling unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6422299B1 (en) * 2001-11-06 2002-07-23 Thermotech Enterprises, Inc. Wheel system for an air handling unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015189410A1 (fr) 2014-06-13 2015-12-17 Amarant Industri Ab Roue thermique
US11041679B2 (en) 2019-01-21 2021-06-22 Johnson Controls Technology Company Energy recovery wheel assembly for an HVAC system

Also Published As

Publication number Publication date
SE533839C2 (sv) 2011-02-01
SE0950440A1 (sv) 2010-12-11

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