Patent US599214A successfully refreshed from Google Patents.
US3760873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate heat exchangers
Assignee: SPX Flow Technology Crawley Ltd
•
Filing: 1972-02-24
•
Granted: 1973-09-25
•
Expires: 1992-02-24
Abstract
Abstract A heat exchanger plate has an unperforated port portion to separate passes. This portion is reinforced by a reinforcement having edge formations whereby the effect of an annular diaphragm around the reinforcement is avoided. In a preferred form, the inner wall of a gasket recess surrounding the port portion is formed with alternating zones of local widening, cooperating with the lobes or full diameter zones of the reinforcing element, and normal width zones cooperating with reduced diameter zones of the reinforcing element, with reinforcing ribs to strengthen the widened space between the reinforcing element and the inner wall of the gasket recess.
Inventors
- 👤 F Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:22
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/08; F28F3/083
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
110 words
In a heat exchanger plate having an unperforated port zone therein adapted to be aligned with perforated ports in similar plates in a pack, the said unperforated port zone being surrounded by a gasket recess having inner and outer walls and a base adapted to contact the sealing face of a gasket on an adjacent plate, the said unperforated port zone being provided with a reinforcing element secured to the plate and having a flat area for engagement on an adjacent plate: the improvement that a zone of the plate defined between the inner wall of the gasket recess and the reinforcing element is interrupted by reinforced and corrugated parts.
Claim 2
Dependent Claim
110 words
In a heat exchanger plate having an unperforated port zone therein adapted to be aligned with perforated ports in similar plates in a pack, the said unperforated port zone being surrounded by a gasket recess having inner and outer walls and a base adapted to contact the sealing face of a gasket on an adjacent plate, the said unperforated port zone being provided with a reinforcing element secured to the plate and having a flat area for engagement on an adjacent plate: the improvement that a zone of the plate defined between the inner wall of the gasket recess and the reinforcing element is interrupted by reinforced and corrugated parts.
Claim 3
Dependent Claim
21 words
A heat exchanger plate as claimed in claim 1, in which the flat area is substantially coplanar with the said base.
Claim 4
Dependent Claim
26 words
A heat exchanger plate as claimed in claim 1, in which the reinforcing element is in the form of a disc having areas of increased diameter.
Claim 5
Dependent Claim
28 words
A heat exchanger plate as claimed in claim 1, in which the inner wall of the gasket recess is formed with zones of local widening of the recess.
Claim 6
Dependent Claim
26 words
A heat exchanger plate as claimed in claim 4, in which each zone of the local widening comprises a plurality of small areas of local widening.
Claim 7
Dependent Claim
33 words
A heat exchanger plate as claimed in claim 5, in which the reinforcing element is in the form of a disc having areas of increased diameter and intervening areas of a reduced diameter.
Claim 8
Dependent Claim
75 words
A heat exchanger plate as claimed in claim 6, in which the zones of local widening of the gasket recess cooperate with the areas of increased diameter, and the intervening zones of the gasket recess cooperate with the areas of the reinforcing element of reduced diameter, and in which there provided additional reinforcing formations in the plates between the inner wall of the gasket recess and the areas of reduced diameter of the reinforcing element.
Claim 9
Dependent Claim
125 words
In a heat exchanger comprising a pack of plates including at least one plate having an unperforated port zone therein adapted to be aligned with the perforated ports in the other plates in the pack, the said unperforated port zone being surrounded by a gasket recess having inner and outer walls and the base adapted to contact the sealing face of a gasket on the adjacent plate, the said unperforated port zone being provided with the reinforcing element secured to the plate and having a flat area for engagement on the adjacent plate: the improvement that the zone of the plate with the unperforated port zone between the reinforcing element and the inner wall of the gasket recess is interrupted by reinfOrced and corrugated parts.
Claim 10
Dependent Claim
125 words
In a heat exchanger comprising a pack of plates including at least one plate having an unperforated port zone therein adapted to be aligned with the perforated ports in the other plates in the pack, the said unperforated port zone being surrounded by a gasket recess having inner and outer walls and the base adapted to contact the sealing face of a gasket on the adjacent plate, the said unperforated port zone being provided with the reinforcing element secured to the plate and having a flat area for engagement on the adjacent plate: the improvement that the zone of the plate with the unperforated port zone between the reinforcing element and the inner wall of the gasket recess is interrupted by reinfOrced and corrugated parts.
Claim 11
Dependent Claim
69 words
A heat exchanger as claimed in claim 8, in which at least one of the port zones of each of the plates includes a gasket recess having an inner wall with zones of local widening spaced by zones of normal width, adjacent plates in the pack being so formed tht the zones of local widening align with zones of normal width in the adjacent plates to provide interplate support.
Claim 12
Dependent Claim
29 words
A heat exchanger as claimed in claim 9, in which the zones of normal width are associated with additional reinforcing ribs for interplate support with zones of local widening.
References Cited (Backward Citations)
US3179165A
Cited
US3195625A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |