US3789917A - Rotary heat-exchanger - Google Patents

Rotary heat-exchanger Download PDF

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Publication number
US3789917A
US3789917A US00225753A US3789917DA US3789917A US 3789917 A US3789917 A US 3789917A US 00225753 A US00225753 A US 00225753A US 3789917D A US3789917D A US 3789917DA US 3789917 A US3789917 A US 3789917A
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US
United States
Prior art keywords
matrix
rotary heat
exchanger according
exchanger
elastic
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.)
Expired - Lifetime
Application number
US00225753A
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English (en)
Inventor
P Jarry
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.)
LE MOTEUR MODERNE
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LE MOTEUR MODERNE
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
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Publication of US3789917A publication Critical patent/US3789917A/en
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Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F28D19/047—Sealing means
    • 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
    • F28D19/048—Bearings; Driving means
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/009—Heat exchange having a solid heat storage mass for absorbing heat from one fluid and releasing it to another, i.e. regenerator
    • Y10S165/013—Movable heat storage mass with enclosure
    • Y10S165/016—Rotary storage mass
    • Y10S165/029—Cylindrical storage mass with axial flow passages
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/1987—Rotary bodies
    • Y10T74/19893—Sectional
    • Y10T74/19921—Separate rim

Definitions

  • ABSTRACT A rotary heat exchanger of the type having a hot gas
  • the matrix has longitudinal passages there- [52] US. Cl. 165/8, 165/10, 64/27 NM, through capable of establishing communication b 74/446 165/ 9 tween said pipes.
  • the active periphery of the matrix is [51] 11''!!- Cl.
  • the present invention concerns a rotary heatexchanger of the kind having a hot-gas pipe, a cold-gas pipe and a rotary matrix made of a refractory material provided longitudinally with canals forming cells and disposed in an interrupted part of the pipes, the said canals being capable of establishing communication between said canals.
  • the rotating matrix which constitutes the active part of the exchanger is made of a refractory material and is fairly fragile. Furthermore, its periphery may be subjected to high centrifugal forces. Indeed, considerable differences of pressure are exerted radially on both sides of the parts of the matrix situated opposite the periphery of the sealing rings which, as is known, constitute a leak-tight joint between the upstream and downstream surfaces of the matrix and at least one of the pipe lines.
  • a rotary heat-exchanger according to the invention is characterized in that the periphery of the matrix is compressed by a peripheral elastic collar at a substantially constant tension.
  • the collar is elastic it continues-to exert an adequate clamping force on the periphery of the matrix, even if it is subjected to high temperatures or stresses and expands considerably.
  • This arrangement also does away, of course, with the need to mount the matrix in a leak-tight cover surrounding its driving mechanism, which greatly simplifies the manufacture and the repair of a rotary exchanger equipped in this way.
  • thermoelectric band interposed between the matrix and the said collar.
  • the said band which may be constituted by a coating, material or felt, forms a heat-screen protecting the collar. Furthermore, it provides a uniform distribution of the mechanical pressure stresses between the matrix and the collar.
  • the said collar is made of arcuate bands connected by elastic tension members each one of which acts between the overlapping end of two neighbouring strips.
  • the said elastic members include two stirrups each one of which abuts in a hook at the end of a band, both being subjected to an elastic force tending to separate them from each other.
  • the said elastic force may be provided by at least one set of spring washers operating against the inside faces of the stirrups and threaded on a shaft provided on .the stirrups.
  • the elastic members may include a flat spring each of whose ends abuts in a hook at the end of a band and an adjustment device able to position the central part of the leaf spring in relation to the said collar.
  • the nearer the central part of the flat spring is to the collar the greater is the force with which its ends abut against the hooks of the band.
  • the nearer the central part of the flat spring is to the collar the greater is the clamping force exerted by the collar on the periphery of the matrix.
  • the said adjustment device may include an excentric, which provides a very easy adjustment of the clamping tension of the collar.
  • thermo correction element inserted between the excentric and the central part of the flat spring.
  • thermostatic correction element expands and automatically increases the tension of the collar, maintaining therefore a substantially constant clamping force which is exerted on the periphery of the matrix whatever the temperature.
  • toothed ring disposed coaxially around the matrix, at least one of the said elastic members being fixed on the said ring whilst the others can move slightly circumferentially in relation to the ring.
  • a rotary heat-exchanger includes, one on each side of the toothed ring, two dish-shaped flanges whose lower parts are opposite each other and whose peripheral external faces provide a track for the rollers which are integral with the frame of the exchanger, at least one of these rollers being fixed to a drive shaft and having teeth engaged in the external teeth of the said ring.
  • the said rotating unit constitutes a sub-unit of the exchanger, which sub-unit can be preassembled before mounting and dismantled as a whole, in the case where a repair proves necessary, which makes the maintenance of the exchanger considerably easier and reduces its cost.
  • the bearings of the drive-roller are fixed, whilst the bearings of at least one of the other rollers are radially movable and are subjected, in the radial direction, to an elastic return-force.
  • the invention just described offers further the considerable advantage that it provides for the arrangement of the whole of the drive mechanism on the periphery of the matrix. Since this periphery does not have to support a counter-pressure, the mechanism can be at atmospheric pressure and at a low temperature, which allows in its manufacture the use of materials of only average quality. Moreover, this mechanism can be cooled by forced ventilation at ambient temperature.
  • FIG. 1 shows diagrammatically in axial section a rotary heat-exchanger according to the present invention
  • FIG. 2 shows the same heat-exchanger in crosssection
  • FIG. 3 shows, on a greater scale, the cross-section of a part of thesame exchanger
  • FIG. 4 is a detailed cross-section view showing an elastic tension member
  • FIG. 5 is a detailed plan view showing the overlapping ends of two neighbouring bands of the collar
  • FIG. 6 is an axial section of the member of FIG. 4;
  • FIG. 7 is a detailed cross-sectional view of yet another embodiment of an elastic tension member
  • FIG. 8 is a detailed cross-section view of yet another embodiment of an elastic tension member.
  • FIG. 9 is a detailed axial-section view showing the roller-track solid with the toothed ring, and a drive roller.
  • the rotary heat-exchanger shown in FIG. 1 includes a low-pressure hot-gas pipe 1 and a cold-gas pipe 2 in which the gas is at high pressure and flows counter to the hot-gas flow, as the arrows 3 show.
  • the active part of the exchanger is constituted by a rotary pyroceram matrix 4 crossed longitudinally, i.e. following the axis 5 of the exchanger, by canals forming cells. This matrix is arranged in an interrupted part of pipes l and 2 so that the canals can establish communication between the said pipes l and 2 in a known way, thus transferring the heat between the hot and cold gases.
  • the matrix 4 is provided, on each of its faces, with a sealing-ring 6 in gas-tight contact with the edge of compressed bellows 7 communicating with the highpressure gas pipe 2, the sealing-ring:determining the ratio of the active surfaces 8 and 9 on which depends the thermal output of the exchanger.
  • the periphery of the matrix is compressed by an elastic peripheral collar 10 at practically constant tension.
  • a heat-insulating band 11 is interposed between the matrix 4 and the collar 10.
  • This latter is made up of three arcuate bands of equal length 10a, 10b and 10c, connected by three elastic tension members 12, each of which operates between the overlapping ends of two neighbouring bands (FIG.
  • These elastic members may be, as FIGS. 2, 3, 4 and 7 show, each one made up of two stirrups such as 12a and 12b each of which abuts against the hooks 13b and 13a respectively at the ends of bands 10b and 10a.
  • the stirrups 12a and 12b are subjected to an elastic force tending to separate them from each other, this force being provided by four sets 14 of spring-washers, for example in the shape of truncated cones and opposed in twos.
  • the four sets 14 act between the inner faces of the stirrups and are threaded on shafts 15 provided on the stirrups to ensure the centring and tensioning of the washers.
  • the elastic tension members include a flat spring 16 whose ends 16b and 16a abut in hooks, 13a and 13b respectively at the ends of bands 10a and 10b.
  • An adjusting device provides for positioning of the central part of the flat spring in relation to the collar 10.
  • This device is made up of an excentric including two off-centre pins 17 and 18, pin 17 having a fixed axis in relation to the collar whilst pin 18 has its axis movable in relation to the collar by rotation of pin 17.
  • thermo correction element for example an aneroid capsule 20, which is inserted between the bearing 19 and the central part of the flat spring 16, which provides the advantage of an extra compensation, as mentioned above.
  • the apparatus for rotating the matrix is made up as follows (see FIGS. 1, 4, 7, 8 and 9).
  • the coupling between the matrix and the ring is effected radially by means of one of the three elastic tension members by locking a peg 22a in a groove 23 of the stirrup 12a and axially by pins, not illustrated (FIG. 4).
  • the two other elastic tension members also include pegs 22b and 220 but these last are slack in the openings 24b and 240 of the toothed ring 21, so that they may move slightly in relation thereto, in the direction of the circumference which offers the advantage mentioned above (FIG. 3).
  • the elastic tension member 12 to be locked on the toothed ring 21 carries a stop 25 wedged in a notch 26 of the ring.
  • the shaft of the fixed pin 17 is housed in an opening in the ring, which allows the coupling of the matrix and the ring, as well as the relative centring of toothed-wheel and matrix by means of the excentric.
  • the toothed wheel 21 is solid with two dished flanges whose lower parts are opposed '27 and 28 (FIG. 9).
  • the bearings 34 of the drive-roller 29 are fixed in relation to the frame 35 of the exchanger, whilst the bearings of roller 31 are movable radially and are subjected, in the radial direction, to an elastic return force, as shown diagrammatically by a spring 36 (FIG. 2).
  • the three rollers provide excellent radial and axial centring of the ring without there resulting stresses or excessive play, these being compensated by the radial movement of the bearings of roller 31.
  • the rotating unit of the exchanger is housed in a cover 37, defining a low pressure enclosure in communication with the hot gas of pipe 1 (FIG. 1).
  • the mechanism receives forced ventilation by a supply of air at atmospheric pressure and low temperature, as shown by arrows 41 in FIG. 2.
  • a rotary heat-exchanger according to claim 1, wherein a flexible heat-insulating band is interposed between the said thin arcuate bands and the active periphery of the matrix.
  • a rotary heat-exchanger according to claim 1, wherein said elastic tension members include two stirrups each one abutting in a hook at the end of a band and subjected to an elastic force tending to separate them from each other.
  • a rotary heat-exchanger according to claim 3, wherein said elastic force is provided by at least one set of spring-washers acting between the inner faces of the stirrups and threaded on shafts provided on the stirrups.
  • a rotary heat-exchanger according to claim 4, wherein the elastic tension members include a flat spring, each of whose ends abuts in a hook at the end of a band and an adjusting device capable of positioning the central part of the flat spring in relation to said collar.
  • a rotary heat-exchanger according to claim 5, wherein the adjusting device includes an eccentric.
  • a rotary heat-exchanger according to claim 6, wherein on at least one of the elastic tension members a thermostatic correction element is inserted between the eccentric and the central part of the flat spring.
  • a rotary heat-exchanger according to claim 1, wherein a toothed ring is externally disposed coaxially around the matrix, at least one of said elastic tension members being fixed on said toothed ring, whilst the others may move slightly in a circumferential direction in relation to thetoothed ring.
  • a rotary heat-exchanger wherein two dish-shaped flanges are disposedone on each side of the toothed ring, their lower parts being opposed and the external faces of their periphery forming a track for the rollers which are solid with the frame of the exchanger, at least one of which rollers is fixed on a drive-shaft and provided with teeth in engagement with the external teeth of the toothed wheel.

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  • 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)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)
US00225753A 1971-02-15 1972-02-14 Rotary heat-exchanger Expired - Lifetime US3789917A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7104935A FR2125148B1 (fr) 1971-02-15 1971-02-15

Publications (1)

Publication Number Publication Date
US3789917A true US3789917A (en) 1974-02-05

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US00225753A Expired - Lifetime US3789917A (en) 1971-02-15 1972-02-14 Rotary heat-exchanger

Country Status (8)

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US (1) US3789917A (fr)
JP (1) JPS5527276B1 (fr)
DE (1) DE2206621C3 (fr)
FR (1) FR2125148B1 (fr)
GB (1) GB1334481A (fr)
IT (1) IT947561B (fr)
NL (1) NL7201925A (fr)
SE (1) SE378669B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848663A (en) * 1973-11-19 1974-11-19 Ford Motor Co Rotary regenerator for a gas turbine engine with resilient mounts for positioning the regenerator
US3882926A (en) * 1972-10-18 1975-05-13 Bennes Marrel Rotary heat exchanger, in particular for a gas turbine
US3960209A (en) * 1974-04-22 1976-06-01 Daimler-Benz Aktiengesellschaft Regenerative heat exchanger of a gas turbine
US4057102A (en) * 1972-11-22 1977-11-08 Bennes Marrel, Zone Industrielle Rotary heat exchanger, in particular for a gas turbine
WO1996008678A1 (fr) * 1994-09-16 1996-03-21 Engelhard/Icc Ensembles de support rotatif de roues de traitement de fluide pour regeneration
US20120298326A1 (en) * 2010-11-25 2012-11-29 Balcke-Durr Gmbh Regenerative heat exchanger with a rotor seal with forced guidance

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59157486A (ja) * 1983-02-28 1984-09-06 Baanaa Internatl:Kk 回転式熱交換器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3525384A (en) * 1968-08-29 1970-08-25 Ford Motor Co Gas turbine heat exchanging system using an elastomeric pad for torque transmission

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3167115A (en) * 1961-11-13 1965-01-26 Continental Motors Corp Regenerator rim attachment
US3391727A (en) * 1966-11-14 1968-07-09 Ford Motor Co Disc type rotary heat exchanger
US3496993A (en) * 1968-08-29 1970-02-24 Ford Motor Co Gas turbine heat exchanging system using slotted brackets for torque transmission
GB1206246A (en) * 1968-09-17 1970-09-23 Leyland Gas Turbines Ltd Rotary regenerative heat exchanger

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3525384A (en) * 1968-08-29 1970-08-25 Ford Motor Co Gas turbine heat exchanging system using an elastomeric pad for torque transmission

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882926A (en) * 1972-10-18 1975-05-13 Bennes Marrel Rotary heat exchanger, in particular for a gas turbine
US4057102A (en) * 1972-11-22 1977-11-08 Bennes Marrel, Zone Industrielle Rotary heat exchanger, in particular for a gas turbine
US3848663A (en) * 1973-11-19 1974-11-19 Ford Motor Co Rotary regenerator for a gas turbine engine with resilient mounts for positioning the regenerator
US3960209A (en) * 1974-04-22 1976-06-01 Daimler-Benz Aktiengesellschaft Regenerative heat exchanger of a gas turbine
WO1996008678A1 (fr) * 1994-09-16 1996-03-21 Engelhard/Icc Ensembles de support rotatif de roues de traitement de fluide pour regeneration
US5595238A (en) * 1994-09-16 1997-01-21 Engelhard/Icc Rotatably supported regenerative fluid treatment wheel assemblies
US20120298326A1 (en) * 2010-11-25 2012-11-29 Balcke-Durr Gmbh Regenerative heat exchanger with a rotor seal with forced guidance

Also Published As

Publication number Publication date
DE2206621A1 (de) 1972-09-07
JPS5527276B1 (fr) 1980-07-19
NL7201925A (fr) 1972-08-17
DE2206621B2 (de) 1975-03-13
FR2125148B1 (fr) 1973-12-28
GB1334481A (en) 1973-10-17
SE378669B (fr) 1975-09-08
DE2206621C3 (de) 1975-11-06
IT947561B (it) 1973-05-30
FR2125148A1 (fr) 1972-09-29

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