US3373797A - Regenerative heat exchanger - Google Patents

Regenerative heat exchanger Download PDF

Info

Publication number
US3373797A
US3373797A US597586A US59758666A US3373797A US 3373797 A US3373797 A US 3373797A US 597586 A US597586 A US 597586A US 59758666 A US59758666 A US 59758666A US 3373797 A US3373797 A US 3373797A
Authority
US
United States
Prior art keywords
rotor
sector plates
sector
heat exchanger
sealing means
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
US597586A
Other languages
English (en)
Inventor
Nyberg Ake Lennart
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.)
Svenska Rotor Maskiner AB
Original Assignee
Svenska Rotor Maskiner 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 Svenska Rotor Maskiner AB filed Critical Svenska Rotor Maskiner AB
Application granted granted Critical
Publication of US3373797A publication Critical patent/US3373797A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • Y10S165/022—Seal defining sector-shaped flow area

Definitions

  • the present invention relates to a regenerative heat exchanger of the type which comprises a stationary housing in which is provided a cylindrical rotor containing a regenerative mass.
  • the housing includes ducts for the heat exchanging fluids and these ducts have openings at either end of the rotor for directing separate flows of fluid through the regenerative mass.
  • sealing means between the rotor and the housing which include swingable sector plates hinged at their radial inner ends to the stationary housing and located in sealing proximity to the end surfaces of the rotor for separating adjacent duct openings, each sector plate at one end of the rotor being axially aligned with a sector plate at the opposite end. Further there are provided axial sealing means extending between aligned sector plates and cooperating with the outer cylindrical rotor surface.
  • the deformations may be so large as to cause jamming of the rotor due to contact between the rotor and the sector plates and axial sealing means respectively.
  • the sector plates and the axial sealing means are actutaed by means yieldingly forcing them towards stop members determining their operative positions. In this manner jamming of the rotor is prevented as the sector plates and/or the axial sealing means move away against the action of the yielding force when they come into contact with the rotor so that this contact only results in a certain braking of the rotor but not in a total stand-still.
  • This braking action in turn results in a greater power demand indicated by a suitable instrument or alarm device so that the positions of the sector plates and/or the axial. sealing means may be manually adjusted.
  • motion transmitting means interconnecting the sector plates and the axial sealing means such that an increase of the distance between the outer ends of aligned sector plates refrom the position shown.
  • the drawing illustrates the invention as applied to a heat exchanger of the type shown in our US. Patent No. 3,250,316, granted May 10, 1966 and more particularly to such a heat exchanger provided with a device according to FIG. 14 of said patent application.
  • FIG. 10 indicates a cylindrical rotor which is divided into sectorial compartments by partitions 12.
  • the rotor 10 is rotatably mounted in a housing 14 which is provided with ducts for the heat exchanging fluids parts of which are shown in broken lines in the drawing at 16 and 18.
  • the openings of the ducts 16 and 18 are in knownmanner separated by sector-shaped plates two sector plates being provided at each end of the rotor and each sector plate at one end of the rotor being in axial alignment with a sector plate at the other end of the rotor.
  • two axially aligned sector plates viz. an upper sector plate 20 and a lower sector plate 22'.
  • the sector plates 20 and 22 are hinged to stationary center plates (not shown) so that they are swingable in an axial plane.
  • a rod 24 is secured to the lower sector plate 22 and extends upwardly through a tubular member 26 secured to the' upper sect'or plate 20 and passing freely through a stationary casing end wall 28.
  • a nut (not shown) which serves as an adjustable stop member determining the minimum distance between the ends of the sector plates 20 and 22.
  • a link 30 is pivotally connected to the housing end wall 28 and supports a lever 32 one arm of said lever 32 carrying a weight 34.
  • the other arm of the lever 32 is pivotally connected to a suspension lever 36 which is provided with a plurality of holes for the suspension of the rod 24.
  • the upper end of the rod 24 is connected to a hole located vertically below the pivotal connection between the lever 32 and the suspension lever 36.
  • One end of the suspension lever 36 is inserted between an eccentric 38 and a stop member 40 carried by a bracket 42 secured to the tubular member 26,
  • the eccentric 38 and the stop member 40 are located such that they prevent counterclockwise swingin g of the suspensionlever 36
  • To each sector plate is secured a radially outwardly extending bar 44 onto which is threaded a tube 46.
  • Each tube 46 carries a yoke member 48' the ends of which are connected to a frame-like link element 50 which in turn is connected to an axially extending sealing member 52 cooperating with the outer cylindrical surface of the rotor 10.
  • the link elements 50 form an angle of about 45 with the axis of rotation and converge towards this axis.
  • the ends of the bars 44 and the tubes 46 protrude through holes in the housing 14 which holes are such as to permit a certain axial movement of the bars and the tubes.
  • Each tube end is threaded and carries a nut 54 which is rotatably connected to the end of the bar 44. It is evident that turning of the nut 54 will result in a radial movement of the yoke 48.
  • the holes in the housing 14 are surrounded by bellows-like seals 56.
  • Each link element 50 carries an axially directed lever member 58. At the free end of one of the lever members 58 there is provided a pin 60 which engages a slot 62 at the end of the other lever member 58, The levers 58 form a coupling means between the link elements 50 so that these elements swing substantially synchronously in opposite directions.
  • the axial sealing member 52 is substantially U-shaped in cross section and its substantially radial side-portions cooperate with radial walls 64 secured to the inside of the housing 14 in order to prevent mingling of the fluid flows in the space between the rotor and the housing 14.
  • the weight 34 forms a counter-weight which counterbalances the weight of the sector plates and 22, the axial sealing means 52 and all parts carried by these elements. Therefore, a very little force is required to swing the whole system so that a normal deformation of the rotor is possible without any risk of harmful contact pressure between the rotor and the sector plates and axial sealing means respectively.
  • the counter-weight 34 also produces a force biasing the sector plates towards each other and towards the position determined by the above-mentioned stop member provided on the rod 24. Due to the link elements 50 this stop member also determines the position of the axial sealing member 52.
  • the position of the axial sealin-g member 52 may be adjusted such that there is always a desired small clearance of uniform width also when the outer surface of the rotor becomes slightly conical.
  • By turning one of the nuts 54 it is possible to vary the inclination of the sealing member 52 and by turning both.
  • the eccentric 38 is provided with a handle 39 by means of which the eccentric 38 can be turned such that the suspension lever 36 is swung clockwise whereby the sector plates are separated.
  • the housing 14 is provided with suitable openings through which the stop members on the rods 24 are accessible for adjustment.
  • the invention is not limited to embodiments of heat exchangers in which the force biassing the sealing elements towards their operative positions are produced by weights but may be applied also to such exchangers in which the said biassing force is exerted by springs.
  • a regenerative heat exchanger comprising a stationary housing, a cylindrical rotor provided in said housing and containing a regenerative mass, said housing including ducts for the heat exchanging fiiuds and said ducts having openings at either end of said rotor for directing separate flows of fluid through said regenerative mass, sealing means between said rotor and said housing for preventing mingling of the fluid flows, said sealing means including swingable sector plates hinged at their radially inner ends to the stationary housing and located in sealing proximity to the end surfaces of the rotor for separating adjacent duct openings, each sector plate at one end of the rotor being axially aligned with a sector plate at the opposite end, and axial sealing means extending between aligned sector plates and cooperating with the outer cylindrical rotor surface, and motion transmitting means interconnecting said sector plates and said axial sealing means such that an increase of the distance between the outer ends of aligned sector plates results in a radial outward movement of the adjacent axial sealing means.
  • connection points of said links to said sector plates are radially adjustable.
  • a heat exchanger as defined in claim 5 in which said coupling means includes two lever members each being rigidl secured at one end to one of the links to swing therewith, the free ends of said lever members being pivotably and slidably connected in order to transmit swinging motion from one link to the other.
  • each link forms an angle of about 45 with the axis of rotation in the normal working position of the sector plates and axial sealing means.
  • a heat exchanger as defined in claim 7 comprising: means for manual separation of said sector plates.
  • a heat exchanger as defined in claim 7 comprising. means interconnecting the outer ends of said axially aligned sector plates, said means comprising a lever system including a suspension lever, a first element carried by the upper one of said sector plates and a second element carried by the lower one of said sector plates, said two elements being attached to two horizontally spaced,
  • a substantially horizontal double arm lever swingably mounted on a stationary support, a counter-Weight secured to one arm of said doublearmed lever, the other arm of said double-armed lever being pivotally connected to said suspension lever such as to exert a force on said suspension lever tending to move said sector plates towards each other While said counter-weight counterbalances the Weight of the sector plates and associated movable parts.

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)
US597586A 1965-11-29 1966-11-29 Regenerative heat exchanger Expired - Lifetime US3373797A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB50526/65A GB1118710A (en) 1965-11-29 1965-11-29 Regenerative heat exchanger

Publications (1)

Publication Number Publication Date
US3373797A true US3373797A (en) 1968-03-19

Family

ID=10456226

Family Applications (1)

Application Number Title Priority Date Filing Date
US597586A Expired - Lifetime US3373797A (en) 1965-11-29 1966-11-29 Regenerative heat exchanger

Country Status (5)

Country Link
US (1) US3373797A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE1501633B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR1503067A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1118710A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SE (1) SE310697B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4024907A (en) * 1976-01-08 1977-05-24 The Air Preheater Company, Inc. Sealing plate support
US4284125A (en) * 1979-09-17 1981-08-18 The Air Preheater Company, Inc. Fail safe arrangement
US5029632A (en) * 1990-10-22 1991-07-09 The Babcock & Wilcox Company Air heater with automatic sealing
US5063993A (en) * 1990-10-22 1991-11-12 The Babcock & Wilcox Company Air heater with automatic sealing
WO1993019339A3 (en) * 1992-03-20 1993-11-11 Wes Technology Inc Modifications to air heaters
US5628360A (en) * 1996-02-21 1997-05-13 Abb Air Preheater, Inc. Adjustable axial seal plates for rotary regenerative air preheaters

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4124063A (en) * 1977-08-19 1978-11-07 The Air Preheater Company, Inc. Sector plate
US4122891A (en) * 1977-09-06 1978-10-31 The Air Preheater Company, Inc. Sector plate support

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2873952A (en) * 1952-09-06 1959-02-17 Svenska Rotor Maskiner Ab Rotary regenerative heat exchangers for gaseous media
US3246687A (en) * 1964-03-31 1966-04-19 Air Preheater Thermal actuated sector plate
US3250316A (en) * 1963-04-19 1966-05-10 Svenska Rotor Maskiner Ab Regenerative heat exchangers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE925853C (de) * 1952-09-06 1955-03-31 Kraftanlagen Ag Umlaufender Regenerativ-Vorwaermer mit beweglichen Abdeckplatten

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2873952A (en) * 1952-09-06 1959-02-17 Svenska Rotor Maskiner Ab Rotary regenerative heat exchangers for gaseous media
US3250316A (en) * 1963-04-19 1966-05-10 Svenska Rotor Maskiner Ab Regenerative heat exchangers
US3246687A (en) * 1964-03-31 1966-04-19 Air Preheater Thermal actuated sector plate

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4024907A (en) * 1976-01-08 1977-05-24 The Air Preheater Company, Inc. Sealing plate support
US4284125A (en) * 1979-09-17 1981-08-18 The Air Preheater Company, Inc. Fail safe arrangement
US5029632A (en) * 1990-10-22 1991-07-09 The Babcock & Wilcox Company Air heater with automatic sealing
US5063993A (en) * 1990-10-22 1991-11-12 The Babcock & Wilcox Company Air heater with automatic sealing
WO1993019339A3 (en) * 1992-03-20 1993-11-11 Wes Technology Inc Modifications to air heaters
GB2280017A (en) * 1992-03-20 1995-01-18 Wes Technology Inc Modifications to air heaters
US5628360A (en) * 1996-02-21 1997-05-13 Abb Air Preheater, Inc. Adjustable axial seal plates for rotary regenerative air preheaters
WO1997031235A1 (en) * 1996-02-21 1997-08-28 Abb Air Preheater, Inc. Adjustable axial seal plates for rotary regenerative air preheaters

Also Published As

Publication number Publication date
DE1501633B1 (de) 1969-09-04
FR1503067A (fr) 1967-11-24
SE310697B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1969-05-12
GB1118710A (en) 1968-07-03

Similar Documents

Publication Publication Date Title
US3373797A (en) Regenerative heat exchanger
US3250316A (en) Regenerative heat exchangers
US2873952A (en) Rotary regenerative heat exchangers for gaseous media
US1909118A (en) Diaphragm apparatus for x-ray tubes
US3527291A (en) Expansion accommodating means and method
GB1560194A (en) Damper with curved extension plates for wide range flow control
US4176690A (en) Regulator for a damper assembly
US2458159A (en) Heat exchanger
US4625642A (en) Inking unit of a rotary offset press
US2521484A (en) Electric switch whose blade swings and twists
US3404727A (en) Rotary regenerative heat exchangers
US2296714A (en) Automatic control apparatus
US2931363A (en) Concave overload release mechanism
US766820A (en) Thermosensitive device.
DE2205838B2 (de) Regenerativ-luftvorwaermer mit selbststaetig verstellbarer verschleissbegrenzung an den umfangsdichtungen
US2615708A (en) Spring support
US2776669A (en) Fluid pressure relay
US3785431A (en) Rotary regenerative heat exchangers
US2122176A (en) Air preheater
US3088518A (en) Differential temperature compensator for radial seals
US3769904A (en) Continuous press for dehydration
US4284125A (en) Fail safe arrangement
US2628032A (en) Automatic thermostatic control device
US2473231A (en) Adjustable mirror observation unit for smoke indicators
US3889552A (en) Actuating device for multiple dampers