Patent US5832993A successfully refreshed from Google Patents.
US5832993A
Expired / Lapsed
US
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Heat-exchange element
Assignee: Ebara Corp
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Filing: 1996-12-26
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Granted: 1998-11-10
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Expires: 2016-12-26
Abstract
Abstract A heat-exchange element has a plurality of heat-exchange components each having a circular heat-exchange plate. The circular heat-exchange plate has a plurality of ribs projecting from a surface thereof and extending generally in one direction. The outer circumferential edge of the circular heat-exchange plate is divided into four substantially equal edges. The circular heat-exchange plate includes a pair of sealing ribs extending respectively along two diametrically opposite ones of the edges substantially parallel to the ribs, and a pair of end walls extending respectively along two other diametrically opposite ones of the edges substantially transversely to the ribs. The heat-exchange components are stacked into a cylindrical shape in which the end walls of each of the circular heat-exchange plates fittingly engage the sealing ribs of another one of the circular heat-exchange plates.
Inventors
- 👤 Naruo Ohata
- 👤 Toru Saito
- 👤 Kenji Odashima
- 👤 Takashi Kawanishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:53
CPC Classifications
F; F28; F28F; F28F13/00; F28F13/06; F28D; F28D9/00; F28D9/0012; F28D9/0062; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/387; Y10S165/389
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
155 words
A heat-exchange element comprising: a plurality of heat-exchange components each having a circular heat-exchange plate; said circular heat-exchange plate having a plurality of ribs projecting from a surface thereof and extending in one direction, said circular heat-exchange plate having an outer circumferential edge thereof divided into four substantially equal edges, and including a pair of sealing ribs extending respectively along two diametrically opposite ones of said edges substantially parallel to said ribs, and a pair of end walls extending respectively along two other diametrically opposite ones of said edges substantially transversely to said ribs, said heat-exchange components being stacked into a cylindrical shape in which said end walls of each of the circular heat-exchange plates fittingly engage the sealing ribs of another one of the circular heat-exchange plates, and wherein said end walls are positioned radially outwardly of said sealing ribs which are engaged by said end walls, said end walls having arcuate outer surfaces.
Claim 2
Dependent Claim
155 words
A heat-exchange element comprising: a plurality of heat-exchange components each having a circular heat-exchange plate; said circular heat-exchange plate having a plurality of ribs projecting from a surface thereof and extending in one direction, said circular heat-exchange plate having an outer circumferential edge thereof divided into four substantially equal edges, and including a pair of sealing ribs extending respectively along two diametrically opposite ones of said edges substantially parallel to said ribs, and a pair of end walls extending respectively along two other diametrically opposite ones of said edges substantially transversely to said ribs, said heat-exchange components being stacked into a cylindrical shape in which said end walls of each of the circular heat-exchange plates fittingly engage the sealing ribs of another one of the circular heat-exchange plates, and wherein said end walls are positioned radially outwardly of said sealing ribs which are engaged by said end walls, said end walls having arcuate outer surfaces.
Claim 3
Dependent Claim
145 words
A heat-exchange element comprising: a plurality of heat-exchange components each having a circular heat-exchange plate; said circular heat-exchange plate having a plurality of ribs projecting from a surface thereof and extending in one direction, said circular heat-exchange plate having an outer circumferential edge thereof divided into four substantially equal edges, and including a pair of sealing ribs extending respectively along two diametrically opposite ones of said edges substantially parallel to said ribs, and a pair of end walls extending respectively along two other diametrically opposite ones of said edges substantially transversely to said ribs, said heat-exchange components being stacked into a cylindrical shape in which said end walls of each of the circular heat-exchange plates fittingly engage the sealing ribs of another one of the circular heat-exchange plates, and wherein each of said ribs has a plurality of teeth projecting laterally from a side thereof.
Claim 4
Dependent Claim
145 words
A heat-exchange element comprising: a plurality of heat-exchange components each having a circular heat-exchange plate; said circular heat-exchange plate having a plurality of ribs projecting from a surface thereof and extending in one direction, said circular heat-exchange plate having an outer circumferential edge thereof divided into four substantially equal edges, and including a pair of sealing ribs extending respectively along two diametrically opposite ones of said edges substantially parallel to said ribs, and a pair of end walls extending respectively along two other diametrically opposite ones of said edges substantially transversely to said ribs, said heat-exchange components being stacked into a cylindrical shape in which said end walls of each of the circular heat-exchange plates fittingly engage the sealing ribs of another one of the circular heat-exchange plates, and wherein each of said ribs has a plurality of teeth projecting laterally from a side thereof.
Claim 5
Dependent Claim
161 words
A heat-exchange element comprising: a plurality of heat-exchange components each having a circular heat-exchange plate; said circular heat-exchange plate having a plurality of ribs projecting from a surface thereof and extending in one direction, said circular heat-exchange plate having an outer circumferential edge thereof divided into four substantially equal edges, and including a pair of sealing ribs extending respectively along two diametrically opposite ones of said edges substantially parallel to said ribs, and a pair of end walls extending respectively along two other diametrically opposite ones of said edges substantially transversely to said ribs, said heat-exchange components being stacked into a cylindrical shape in which said end walls of each of the circular heat-exchange plates fittingly engage the sealing ribs of another one of the circular heat-exchange plates, and wherein said circular heat-exchange plate has a plurality of bosses projecting from at least one surface thereof and being disposed in vertically spaced relation from portions of an adjacent heat exchange plate.
Claim 6
Dependent Claim
161 words
A heat-exchange element comprising: a plurality of heat-exchange components each having a circular heat-exchange plate; said circular heat-exchange plate having a plurality of ribs projecting from a surface thereof and extending in one direction, said circular heat-exchange plate having an outer circumferential edge thereof divided into four substantially equal edges, and including a pair of sealing ribs extending respectively along two diametrically opposite ones of said edges substantially parallel to said ribs, and a pair of end walls extending respectively along two other diametrically opposite ones of said edges substantially transversely to said ribs, said heat-exchange components being stacked into a cylindrical shape in which said end walls of each of the circular heat-exchange plates fittingly engage the sealing ribs of another one of the circular heat-exchange plates, and wherein said circular heat-exchange plate has a plurality of bosses projecting from at least one surface thereof and being disposed in vertically spaced relation from portions of an adjacent heat exchange plate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-11-09 | 2002-05-11 | 2002-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-09 | 2006-05-11 | 2006-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-09 | 2010-05-11 | 2010-11-10 | $7700.00 | Window Closed / Lapsed |