Patent US3800860A successfully refreshed from Google Patents.
US3800860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regenerator bodies for rotary regenerative heat exchangers
Assignee: Svenska Rotor Maskiner AB
•
Filing: 1971-10-29
•
Granted: 1974-04-02
•
Expires: 1991-10-29
Abstract
Abstract A regenerator body for a rotary regenerative heat exchanger of the type which comprises a cylindrical outer shell and a central core, and radial partitions subdividing the annular space between the shell and the core into sectorial compartments which are in turn subdivided into sections by tangential walls. At least some of the tangential walls are yieldable in the peripheral direction of the body, by means of pairs of overlapping peripherally space slits in the walls, in order to reduce the thermal stresses arising within the body during operation of the heat exchanger.
Inventors
- 👤 B Johnsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:58
CPC Classifications
F; F28; F28D; F28D19/00; F28D19/04; F28D19/041; F28D19/042; F28D19/044; Y; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S165/013; Y10S165/016; Y10S165/026
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
160 words
A regenerator body for a rotary regenerative heat exchanger comprising a core portion and a number of coaxial substantially cylindrical wall structures interconnected by a number of radial partitions welded thereto, said radial partitions dividing the regenerator body into a plurality of open-ended sectorial compartments and dIviding said wall structures into a plurality of wall portions, each open-ended sectorial compartment being subdivided by wall portions of said wall structures into a number of segments for containing a heat exchanging mass, the improvement wherein each wall structure, at least in one wall portion thereof disposed between two consecutive openended sectorial compartments, is provided with at least two peripherally spaced slits extending in the axial direction from opposite ends of the body and overlapping each other in the axial direction, the ratio between the peripheral width of the wall portion between two adjacent overlapping slits and the axial distance between the end points of said slits being less than 3 to 10.
Claim 2
Dependent Claim
160 words
A regenerator body for a rotary regenerative heat exchanger comprising a core portion and a number of coaxial substantially cylindrical wall structures interconnected by a number of radial partitions welded thereto, said radial partitions dividing the regenerator body into a plurality of open-ended sectorial compartments and dIviding said wall structures into a plurality of wall portions, each open-ended sectorial compartment being subdivided by wall portions of said wall structures into a number of segments for containing a heat exchanging mass, the improvement wherein each wall structure, at least in one wall portion thereof disposed between two consecutive openended sectorial compartments, is provided with at least two peripherally spaced slits extending in the axial direction from opposite ends of the body and overlapping each other in the axial direction, the ratio between the peripheral width of the wall portion between two adjacent overlapping slits and the axial distance between the end points of said slits being less than 3 to 10.
Claim 3
Dependent Claim
45 words
A regenerator body as defined in claim 1, wherein the ratio between the peripheral width of the wall portion between two adjacent overlapping slits and the axial distance between the end points of said slits is between about 1.5 to 10 and 2.5 to 10.
Claim 4
Dependent Claim
59 words
A regenerator body as defined in claim 1, wherein a number of slitted wall portions are evenly spaced around the periphery of a substantially cylindrical wall structure and the ratio between the number of slitted wall portions of each wall structure disposed between two consecutive partitions and the number of the partitions is a maximum of 1 to 2.
Claim 5
Dependent Claim
66 words
A regenerator body as defined in claim 1, wherein the radially outermost substantially cylindrical wall structure forming a shell of the body at each axial edge thereof carries a ring for cooperation with seals rotatably mounted relative to the body, each ring being comprised of ring segments, each of said ring segments extending between two adjacent slits in the adjoining edge of the carrying wall structure.
Claim 6
Dependent Claim
21 words
A regenerator body as defined in claim 1, wherein said wall portions of said substantially cylindrical wall structures are substantially rectangular.
References Cited (Backward Citations)
US2680598A
Cited
US3267562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |