Patent US3874442A successfully refreshed from Google Patents.
US3874442A
Expired / Lapsed
US
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Pack of heat absorbing material and a support member therefor
Assignee: Svenska Rotor Maskiner AB
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Filing: 1973-02-09
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Granted: 1975-04-01
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Expires: 1993-02-09
Abstract
Abstract A pack of heat absorbing material for a rotary regenerative heat exchanger composed of a stack of plate elements and a support member therefor. The support member comprises a frame structure contacting one end of the stack and a lift element extending through the stack and projecting from the opposite end thereof. The stack is further provided with two rods passing through the plates and each having a head projecting outside the plates at opposite fronts of the stack.
Inventors
- 👤 Bo Johnsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:04
CPC Classifications
F; F28; F28D; F28D19/00; F28D19/04; F28D19/041; F28D19/042; F28D19/044; Y; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S165/042; Y10S165/043
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
228 words
A pack of rectangular element plates for rotary regenerative heat exchangers which have a cylindrical regenerator body including radial and circumferential division plates defining walls of sectorial compartments of the regenerator body, said pack of rectangular element plates comprising: a stack of plates which are profiled to form open-ended passages for the heat exchanging fluids, and have a first pair of opposite edges forming two parallel end surfaces of the stack between which the open-ended passages extend and a second pair of opposite edges forming together with faces of the outermost plates side surfaces of the stack exposed to the walls of the sectorial compartment; means engaging said plaTes to at least retain said plates in a preset relative alignment; a support member comprising a frame structure supportingly engaging one of said parallel end surfaces of the stack of plates and exposing the side surfaces of the stack; and at least one elongated lift element secured to said frame structure and extending through the stack between two adjacent plates, the free end of said lift element being accessible at the other of said parallel end surfaces and having means adapted to be engaged by a hoisting device, said plates of the stack when positioned in a sectorial compartment being held together and to said lift element by the walls of said sectorial compartment and said frame structure, respectively.
Claim 2
Dependent Claim
228 words
A pack of rectangular element plates for rotary regenerative heat exchangers which have a cylindrical regenerator body including radial and circumferential division plates defining walls of sectorial compartments of the regenerator body, said pack of rectangular element plates comprising: a stack of plates which are profiled to form open-ended passages for the heat exchanging fluids, and have a first pair of opposite edges forming two parallel end surfaces of the stack between which the open-ended passages extend and a second pair of opposite edges forming together with faces of the outermost plates side surfaces of the stack exposed to the walls of the sectorial compartment; means engaging said plaTes to at least retain said plates in a preset relative alignment; a support member comprising a frame structure supportingly engaging one of said parallel end surfaces of the stack of plates and exposing the side surfaces of the stack; and at least one elongated lift element secured to said frame structure and extending through the stack between two adjacent plates, the free end of said lift element being accessible at the other of said parallel end surfaces and having means adapted to be engaged by a hoisting device, said plates of the stack when positioned in a sectorial compartment being held together and to said lift element by the walls of said sectorial compartment and said frame structure, respectively.
Claim 3
Dependent Claim
19 words
A pack as defined in claim 1, including means for releasably joining the plate stack to the support member.
Claim 4
Dependent Claim
23 words
A pack as defined in claim 2, in which the plate stack is in a compressed state when joined to the support member.
Claim 5
Dependent Claim
18 words
A pack as defined in claim 3, including strapping means joining the plate stack to the support member.
Claim 6
Dependent Claim
40 words
A pack as defined in claim 1, in which the frame structure includes two longitudinal girders, extending substantially perpendicular to the plates of the stack, and a number of cross-pieces, extending substantially parallel to the plates and interconnecting said girders.
Claim 7
Dependent Claim
32 words
A pack as defined in claim 5, in which the contour of the frame structure is substantially similar to that of the contacting surface of the plate stack but of smaller size.
Claim 8
Dependent Claim
46 words
A pack as defined in claim 6, in which each plate is provided with at least one hole therein, said holes registering with each other to form a channel through the stack generally perpendicular to said open-ended passages, said channel enclosing a rod slidably mounted therein.
Claim 9
Dependent Claim
46 words
A pack as defined in claim 7, in which the stack of plates is provided with two slidably mounted rods, each of said rods having at one end thereof a head wider than the corresponding channel, said heads being disposed at opposite sides of the stack.
Claim 10
Dependent Claim
35 words
A pack as defined in claim 8, in which each of said holes in the plates forming a channel for a rod is located a fixed distance from the adjacent edge of the related plate.
Claim 11
Dependent Claim
19 words
A pack as defined in claim 5, in which the lift element is secured to one of the cross-pieces.
Claim 12
Dependent Claim
29 words
A pack as defined in claim 10, in which the thickness of the lift element is smaller than the distance between the middle planes of the two adjacent plates.
Claim 13
Dependent Claim
22 words
A pack as defined in claim 11, in which the lift element is disposed perpendicularly to the plane of the frame structure.
Claim 14
Dependent Claim
26 words
A pack as defined in claim 1 wherein said means engaging said plates comprises at least one rod extending through substantially aligned apertures in said plates.
Claim 15
Dependent Claim
28 words
A pack as defined in claim 13 comprising a pair of said rods, each extending through a plurality of said plates from respective opposite ends of said pack.
Claim 16
Dependent Claim
27 words
A pack as defined in claim 1, in which said lift element is located so as to substantially pass through the center of gravity of the pack.
Claim 17
Dependent Claim
124 words
A pack of rectangular element plates for rotary regenerative heat exchangers having walled sectorial compartments, comprising: a stack of plates defining open-ended passages between adjacent plates; means engaging said plates to at least retain said plates in a preset relative alignment; a frame structure on which said plates are mounted and supported; and at least one elongated lift element secured to the frame structure, said lift element having a length so as to extend from the frame structure and to project beyond the plates when the plates are supported on the frame structure, said plates of the stack when positioned in a sectorial compartment being held together and to said lift element by the walls of said sectorial compartment and said frame structure, respectively.
Claim 18
Dependent Claim
124 words
A pack of rectangular element plates for rotary regenerative heat exchangers having walled sectorial compartments, comprising: a stack of plates defining open-ended passages between adjacent plates; means engaging said plates to at least retain said plates in a preset relative alignment; a frame structure on which said plates are mounted and supported; and at least one elongated lift element secured to the frame structure, said lift element having a length so as to extend from the frame structure and to project beyond the plates when the plates are supported on the frame structure, said plates of the stack when positioned in a sectorial compartment being held together and to said lift element by the walls of said sectorial compartment and said frame structure, respectively.
Claim 19
Dependent Claim
22 words
A pack as defined in claim 16, in which the lift element extends through the stack of plates bEtween two adjacent plates.
Claim 20
Dependent Claim
26 words
A pack as defined in claim 16 wherein said means engaging said plates comprises at least one rod extending through substantially aligned apertures in said plates.
Claim 21
Dependent Claim
28 words
A pack as defined in claim 16 comprising a pair of said rods, each extending through a plurality of said plates from respective opposite ends of said pack.
References Cited (Backward Citations)
US2549583A
Cited
US2432198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |