US3882927A - Seal for rotary regenerative heat exchanger - Google Patents

Seal for rotary regenerative heat exchanger Download PDF

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Publication number
US3882927A
US3882927A US345272A US34527273A US3882927A US 3882927 A US3882927 A US 3882927A US 345272 A US345272 A US 345272A US 34527273 A US34527273 A US 34527273A US 3882927 A US3882927 A US 3882927A
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United States
Prior art keywords
blocks
seal
matrix
face
heat exchanger
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Expired - Lifetime
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US345272A
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English (en)
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Robert Noel Penny
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Individual
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Individual
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Publication of US3882927A publication Critical patent/US3882927A/en
Anticipated expiration legal-status Critical
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
    • F28D19/047—Sealing 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
    • Y10S165/02—Seal and seal-engaging surface are relatively movable
    • Y10S165/021—Seal engaging a face of cylindrical heat storage mass

Definitions

  • a seal for engagement with an end face of the matrix of a rotary regenerative heat exchanger is formed from a plurality of blocks arranged end-to-end in a guide housing, adjacent end faces of the blocks being shaped to form a joint permitting articulation of adjacent blocks about a pivotal axis extending transversely of the blocks and parallel with the plane of the end face of the matrix, the blocks being of sufficiently short length and sufficient in number to permit the seal to conform to the surface profile of the end face of the matrix.
  • the invention relates to a seal for a rotary regenerative heat exchanger.
  • the matrix Under operating conditions the matrix will be heated to a high temperature which may result in the matrix being distorted to a dished shape or where 'it is of large diameter it may not be perfectly flat. Under such conditions the seals,even when formed from blocks arranged end-to-end as taught in. the foregoing Application cannot follow the dished shape of the matrix and leakage of air or gas will occur between the end faces of the matrix and the seals.
  • a seal for engagement with an end face of the matrix of a rotary regenerative heat exchanger or a portion of a seal is formed from a plurality of blocks arranged end-to-end in a guide housing, adjacent end faces of the blocks being shaped to form a joint permitting articulation of adjacent blocks about a pivotal axis extending transversely of the blocks and parallel with the plane of the end face of the matrix, the blocks being of sufficiently short length and sufficient in number to permit the whole seal or said portion thereof to conform to the surface profile of the end face of the matrix.
  • One of the end faces of a pair of adjacent blocks may be of cylindrical concave shape and the adjacent end face of the co-operating block may be of complementary cylindrical convex shape.
  • both adjacent end faces of a pair of adjacent blocks may be of concave cylindrical shape, a cylindrical roller being positioned between the bloc-ks and located in the concave end faces.
  • the adjacent blocks may abut together the rollers may be of a synthetic plastics material, such in the manner of a knuckle joint or they may be hinged by a pin.
  • the blocks may be resiliently biased into engagement with the adjacent end face of the matrix by spring means or by a pressurized fluid.
  • the blocks may be urged in their guide housing by spring means or a pressurized fluid into sealing engagement with an arcuate seal with which the bar seal is to form a closed figure.
  • the blocks from which the seal is constructed may be made from any suitable material for rubbing seals and capable of withstanding the working temperature of the seal.
  • the seal blocks may be made of carbon or nickel oxide or be coated with nickel oxide or other material capable as for example, nylon; but at the hotter end, the rollers would be made of carbon or nickel oxide or another material capable of withstanding a high operating temperature.
  • seal blocks of a seal, or a portion thereof, constructed in accordance with this invention may be made of different materials having differing coefficients of linear expansion, the materials and the lengths of respective blocks being so chosen that the effective coefficient of linear expansion of the seal or seal por-. tion is substantially the same as that of supporting structure therefor, the heat exchanger housing or another portion of the seal.
  • the blocks from which the bar seal portion is con structed may be made of different materials having different coefficients of linear expansion and the lengths of the blocks of different materials may be so chosen that the effective coefficient of linear expansion of the bar seal portion is substantially the same as that of the arcuate seal portion and the annular seal housing, whereby on expansion or contraction of the whole seal and the housing, the bar seal portion will remain in constant engagement with the arcuate seal portion and there will be substantially no relative expansion or contraction between the bar seal portion and the annular housing.
  • the blocks from which the seal or seal portion is constructed in accordance with this invention may be provided with co-operating longitudinal grooves in their seal faces to control the effective sealing area of the whole seal as taught in my aforesaid co-pending Patent Application.
  • FIG. 1 is a plan view of a heat exchanger disc showing a closed figure seal to which the invention is applied;
  • FIG. 2 is a cross-sectional view to a larger scale of a portion of a first construction of the seal shown in FIG.
  • FIG. 3 is a section on the line IIIIII in FIG. 2;
  • FIG. 4 is a view similar to FIG. 3 of a portion of a second construction of seal
  • FIG. 5 is a view similar to FIG. 4 but to a larger scale of aknuckle joint of the sealshown in FIG. 4;
  • FIG. 6 is a section on the line VIVI in FIG. 5;
  • FIG. 7 is a view similar to FIG. 4 of a portion of a third construction of seal
  • FIG. 8 is a view in the direction of arrow VIII of the seal portion shown in FIG. 7;
  • FIG. 9 is a view similar to FIG. 3 of a portion of a forth construction of seal
  • FIG. 10 is a modification of the seal portion shown in FIG. 3, and
  • FIG. 11 is a view in the direction of arrow XI of the seal portion shown in FIG. 10.
  • FIGS. 2 to 11 may be employed in any longitudinal portion of the closed figure seal 1, 2 shown in FIG. 1, although the invention is particularly applicable to the diametral or chordwise portion 1 of the seal.
  • the need for permitting at least the diametral or chordwise portion 1 of the seal to articulate is because where a heat exchanger matrix is in the form of a rotatable disc 3 its end faces against which the seals engage may be distorted due to temperature change on operation of the heat exchanger and instead of being flat they become dished or undulate in some other way.
  • a matrix disc is of large diameter its end faces may not be perfectly flat.
  • the sections can articulate toward or away from the plane of the end face of the disc 3 and thereby remain in sealing contact with the end face of the disc 3 despite the end face being of dished or other non-flat form.
  • the first construction of seal comprises a plurality of short sealing blocks 4, 5 which are arranged end-to-end to form the complete seal or seal portion 1.
  • Adjacent faces of adjacent blocks are of mating concave and convex part-cylindrical shape so that the blocks can freely articulate with respect to each other and maintain an effectively continuous seal along the length of the complete seal or seal portion 1.
  • the blocks are guided in a stationary channel-shaped housing 6 extending along the length of the seal or seal portion 1.
  • the side edges 7 of the blocks closely engage a liner 8 in the channel of the housing 6 permitting the blocks to slide into or out of the channel in the direction of arrows X in FIG.
  • the blocks 4, 5 are maintained in contact with the adjacent end face of the rotating matrix disc 3 by compressed air or other pressurized fluid applied to the compartment 9 and the concave and convex faces of the blocks 4 and 5 permit the blocks to articulate relatively to each other to permit the blocks to follow the dished or other non-flat profile of the end face of the disc 3.
  • the adjacent faces of blocks 11 may be formed with semi-cylindrical grooves between which cylindrical rollers 12 are positioned to form the articulated joints as shown in FIG. 4.
  • a seal 13 is inserted in transverse grooves 14 and 15 formed in the roller and the blocks 11 respectively, as shown in FIGs. 5 and 6.
  • FIGS. 7 and 8 show the third construction of seal in which adjacent seal blocks 16 are provided with interfitting tongues 17 and grooves 18 having adjacent end faces spaced apart at 19 and 20 to permit sufficient free articulation. Adjacent blocks 16 are hinged together by hinge pins 21 extending through aligned holes in the blocks through the tongues and walls of the sockets.
  • the blocks are urged into contact with the disc face by compressed air or other pressurized fluid applied to the compartment 9 in the channel of the housing 6 shown in FIG. 2.
  • the blocks may be urged into engagement with the adjacent end face of the matrix disc 3 as shown in FIG. 9 by spring strips or wires 22 located in recesses 23 in the rear faces of blocks 24, 25, i.e. the faces opposite the faces engaging the matrix disc 3 and engaging a wall of the housing 6 which as shown in FIGS. 2 and 3 is formed with a channel guiding the blocks toward and away from the plane of the end face of the matrix disc 3.
  • a block 4 of FIG. 3 is constructed from two co-operating parts 26, 27 each having partwidth portions which are arranged side-by-side in the housing 6 to form a composite block as shown in plan in FIG. 11. Adjacent edges of the two parts 26, 27 in the faces thereof in the compartment 9 of the housing 6 are chamfered to form two non-aligned V-shaped grooves 28, 29 spaced apart between the convex or concave end faces of the composite block.
  • springs such as springs 22 shown in FIG. 9 could be arranged to urge the block parts 26, 27 apart as well as urging the blocks into engagement with the matrix disc.
  • the blocks of the seals are made of a material capable of withstanding the working temperature.
  • the seal blocks may be made of carbon or of nickel oxide or be coated with nickel oxide.
  • the rollers 12 or hinge pins 21 could be made of a material selected to withstand the working temperature to which the seal is to be subjected.
  • some of the blocks of each of the seal constructions as hereinbefore described may be made of one material and at least some of the remaining blocks may be made of a different material, the materials having different coefficients of linear expansion, the materials and the lengths of the respective blocks being so chosen that the effective coefficient of linear expansion of the seals is substantially the same as that of the seal housing.
  • a rotary regenerative heat exchanger havinga disk-like rotatable matrix and including a pair of seals of which one engages one end face of the matrix and the other engages the other end face of the matrix, at least a portion of one of the seals being formed from a plurality of blocks of which some are made of one material and at least some of the remaining blocks are made of another material having a different coefficient of linear expansion, said blocks arranged end-to-end in a guide housing, adjacent end faces of the blocks being shaped to form a joint permitting articulation of adjacent blocks about a pivotal axis extending transversely of the blocks and parallel with the plane of the end face of the matrix, the blocks being of sufficiently short length and sufficient in number to permit said portion of the seal to conform to the surface profile of the end face of the matrix, and the materials and the lengths of the respective blocks being such that the effective coefficient of linear expansion of the seal is substantially the same as that of the guide housing.
  • a rotary regenerative heat exchanger as claimed in claim 1 in which one of the end faces of a pair of adjacent blocks is of cylindrical convex shape and the adjacent end face of the co-operating block is of complementary cylindrical concave shape.
  • a rotary regenerative heat exchanger as claimed in claim 1 in which each pair of adjacent blocks have end faces formed respectively with a groove and an interfitting tongue, and a hinge pin extends through the tongue into the adjacent walls of the groove.
  • a rotary regenerative heat exchanger as claimed in claim 1 in which the blocks are arranged to be urged outwardly of the guide housing by fluid pressure acting directly on the blocks to urge them into sealing engagement with the end face of the heat exchanger matrix.
  • a rotary regenerative heat exchanger as claimed in claim 1 including spring means by which the blocks are urged outwardly of the guide housing, said spring means acting between the guide housing and the end faces of the blocks opposite the seal faces thereof.
  • a rotary regenerative heat exchanger as claimed in claim 1 in which at least one of the blocks is formed of two parts arranged to be pushed apart, thereby to increase the length of the seal, when the block is urged into sealing engagement with the matrix end face.

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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)
  • Sealing Devices (AREA)
US345272A 1972-03-28 1973-03-27 Seal for rotary regenerative heat exchanger Expired - Lifetime US3882927A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1440672A GB1404750A (en) 1972-03-28 1972-03-28 Seal for rotary regenerative heat exchanger

Publications (1)

Publication Number Publication Date
US3882927A true US3882927A (en) 1975-05-13

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ID=10040647

Family Applications (1)

Application Number Title Priority Date Filing Date
US345272A Expired - Lifetime US3882927A (en) 1972-03-28 1973-03-27 Seal for rotary regenerative heat exchanger

Country Status (5)

Country Link
US (1) US3882927A (hu)
JP (1) JPS5616359B2 (hu)
DE (1) DE2314710A1 (hu)
GB (1) GB1404750A (hu)
IT (1) IT980704B (hu)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4084634A (en) * 1975-09-22 1978-04-18 Nissan Motor Company, Limited Seal assembly for rotary disc-type matrix of gas turbine engine
US4185686A (en) * 1977-10-26 1980-01-29 British Steel Corporation Sealing apparatus for rotary heat exchangers
WO1997049941A1 (en) * 1996-06-25 1997-12-31 Wayne Kozacka Perimeter sealing element for regenerative heat exchanger
US7231958B1 (en) 2002-10-01 2007-06-19 Paragon Airheater Technologies, Llc Reinforced sealing element
US20090145574A1 (en) * 2007-12-05 2009-06-11 Frank Klisura Self-adjusting seal for a heat exchanger
US20110036536A1 (en) * 2009-08-17 2011-02-17 Paragon Airheater Technologies Full contact flexible seal assembly for heat exchanger
US20110037236A1 (en) * 2009-08-17 2011-02-17 Paragon Airheater Technologies Full contact flexible seal assembly for heat exchanger
US20120080160A1 (en) * 2010-10-01 2012-04-05 Townsend Randolph G Regenerative Heat Exchanger and Seal Apparatus Employing Labyrinth Seal
US20130139890A1 (en) * 2011-12-05 2013-06-06 Venmar Ces, Inc. Rotary wheel sealing system
US9772036B2 (en) 2011-12-05 2017-09-26 Nortek Air Solutions Canada, Inc. Self-adjusting rotary wheel sealing system with foam mount

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU81047A1 (fr) * 1978-03-16 1979-06-19 British Steel Corp Perfectionnements relatifs a des echangeurs de chaleur
JPS54155211A (en) * 1978-05-29 1979-12-07 Toshiba Ceramics Co Heat resistant material

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747843A (en) * 1949-09-20 1956-05-29 Power Jets Res & Dev Ltd Seals
US3273904A (en) * 1963-10-07 1966-09-20 Chrysler Corp Regenerator seal with diaphragm support
US3703297A (en) * 1970-12-21 1972-11-21 Thunderline Corp Articulated link seals

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS503019A (hu) * 1973-05-15 1975-01-13

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747843A (en) * 1949-09-20 1956-05-29 Power Jets Res & Dev Ltd Seals
US3273904A (en) * 1963-10-07 1966-09-20 Chrysler Corp Regenerator seal with diaphragm support
US3703297A (en) * 1970-12-21 1972-11-21 Thunderline Corp Articulated link seals

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4084634A (en) * 1975-09-22 1978-04-18 Nissan Motor Company, Limited Seal assembly for rotary disc-type matrix of gas turbine engine
US4185686A (en) * 1977-10-26 1980-01-29 British Steel Corporation Sealing apparatus for rotary heat exchangers
WO1997049941A1 (en) * 1996-06-25 1997-12-31 Wayne Kozacka Perimeter sealing element for regenerative heat exchanger
US5881799A (en) * 1996-06-25 1999-03-16 Kozacka; Wayne R. Perimeter sealing element for regenerative heat exchanger
US7231958B1 (en) 2002-10-01 2007-06-19 Paragon Airheater Technologies, Llc Reinforced sealing element
US20090145574A1 (en) * 2007-12-05 2009-06-11 Frank Klisura Self-adjusting seal for a heat exchanger
US20110036536A1 (en) * 2009-08-17 2011-02-17 Paragon Airheater Technologies Full contact flexible seal assembly for heat exchanger
US20110037236A1 (en) * 2009-08-17 2011-02-17 Paragon Airheater Technologies Full contact flexible seal assembly for heat exchanger
US8157266B2 (en) 2009-08-17 2012-04-17 Paragon Airheater Technologies, Inc. Full contact flexible seal assembly for heat exchanger
US8776864B2 (en) 2009-08-17 2014-07-15 Paragon Airheater Technologies, Inc. Full contact flexible seal assembly for heat exchanger
US20120080160A1 (en) * 2010-10-01 2012-04-05 Townsend Randolph G Regenerative Heat Exchanger and Seal Apparatus Employing Labyrinth Seal
US20130139890A1 (en) * 2011-12-05 2013-06-06 Venmar Ces, Inc. Rotary wheel sealing system
US9772036B2 (en) 2011-12-05 2017-09-26 Nortek Air Solutions Canada, Inc. Self-adjusting rotary wheel sealing system with foam mount
US9920940B2 (en) * 2011-12-05 2018-03-20 Nortek Air Solutions Canada, Inc. Rotary wheel sealing system

Also Published As

Publication number Publication date
GB1404750A (en) 1975-09-03
JPS5616359B2 (hu) 1981-04-15
JPS4915043A (hu) 1974-02-09
IT980704B (it) 1974-10-10
DE2314710A1 (de) 1973-10-11

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