Patent US3840070A successfully refreshed from Google Patents.
US3840070A
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Evaporator-condenser
Assignee: Linde GmbH
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Filing: 1972-03-01
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Granted: 1974-10-08
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Expires: 1992-03-01
Abstract
Abstract An evaporator-condenser for at least two fluids passed in indirect heat-exchanging relationship through respective flow passages of the heat exchanger. The latter is constituted by pairs of plates defining the flow passages. Alternating pairs of plates are sealed together at opposite sides of the rectangular array from the sides of each neighboring pair whereby each pair of plates defines one fluid passage and the next pair of plates defines the other fluid passage. The plates are of corrugated or wrinkled (profiled) configuration so that, at least in the flow path of the condensable fluid, the corrugations or undulations define flanks which are inclined to the outlet of the condensate and form chutes or ramps along which the liquid is guided.
Inventors
- 👤 R Becker
- 👤 W Ulbrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:02
CPC Classifications
F; F28; F28B; F28B9/00; F28B9/08; F25; F25J; F25J5/00; F25J5/002; F25J5/005; F28B1/00; F28D; F28D9/00; F28D9/0012; F28D9/0018; F28F; F28F13/00; F28F13/04; F28F3/00; F28F3/02; F28F3/04; F28F3/042; F28F3/046; F25J2250/00; F25J2250/02; F25J2250/04; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/357; Y10S165/358
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
177 words
A heat exchanger for effecting heat transfer between at least two fluids including a condensable fluid, said heat exchanger comprising a stack of generally rectangular upright heatexchanger plates of thermally conductive material defining between successive pairs of said plates respective flow compartments alternating for said fluids, means for passing said condensable fluid through the passages of first pairs of said plates, and means for passing another of said fluids through the passages of second pairs of said plates, adjoining first and second pairs of plates having one plate in common for heat transfer between said fluids, said plates of said first pairs having transversely spaced linearly extending mutually parallel sawtooth profiles of acute-angle vertices extending inwardly into the passage for the condensable fluid and running at different angles to a condensate fall line along the plates defining the condensable-fluid passages whereby crests of said profiles bear against one another at spaced locations over the areas of the plates defining the condensable fluid passages, said profiles forming liquid-flow ramps leading downwardly toward a condensatedischarge side of said stack.
Claim 2
Dependent Claim
177 words
A heat exchanger for effecting heat transfer between at least two fluids including a condensable fluid, said heat exchanger comprising a stack of generally rectangular upright heatexchanger plates of thermally conductive material defining between successive pairs of said plates respective flow compartments alternating for said fluids, means for passing said condensable fluid through the passages of first pairs of said plates, and means for passing another of said fluids through the passages of second pairs of said plates, adjoining first and second pairs of plates having one plate in common for heat transfer between said fluids, said plates of said first pairs having transversely spaced linearly extending mutually parallel sawtooth profiles of acute-angle vertices extending inwardly into the passage for the condensable fluid and running at different angles to a condensate fall line along the plates defining the condensable-fluid passages whereby crests of said profiles bear against one another at spaced locations over the areas of the plates defining the condensable fluid passages, said profiles forming liquid-flow ramps leading downwardly toward a condensatedischarge side of said stack.
Claim 3
Dependent Claim
47 words
The heat exchanger defined in claim 1 wherein at least some of said liquid-flow ramps extend at a steep angle to the horizontal approximating the condensate fall line and extend substantially to respective ones of said locations at which crests of said profiles bear against one another.
Claim 4
Dependent Claim
23 words
The heat exchanger defined in claim 2 wherein said profiles are provided in vertically extending horizontally spaced strips separated by narrow unprofiled strips.
Claim 5
Dependent Claim
19 words
The heat exchanger defined in claim 1 wherein said ramps are formed by substantially horizontal flanks of the sawtooth.
Claim 6
Dependent Claim
30 words
The heat exchanger defined in claim 1 wherein the profiles of each plate are formed in a plurality of horizontally offset zones of different profile inclinations to the fall line.
Claim 7
Dependent Claim
76 words
The heat exchanger defined in claim 1 wherein said means for passing said condensable fluid through the passages of said first pair of plates is constructed and arranged so as to displace said condensable fluid generally horizontally through the passages between said first pair of plates and said means for passing said other fluid through the passages of said other fluid to traverse said passages of said second pair of plates in a generally vertical direction.
Claim 8
Dependent Claim
36 words
The heat exchanger defined in claim 6 wherein said stack has the configuration of a circular ring with said plates lying generally in radial planes, said condensable fluid traversing the respective flow passages generally radially inwardly.
Claim 9
Dependent Claim
101 words
The heat exchanger defined in claim 7 wherein the ring-shaped stack of plates is received in a pot-shaped tray, said heat exchanger further comprising a cylindrical receptacle receiving said tray and is divided thereby into an upper portion receiving a vaporizable liquid forming said other fluid and a lower portion receivable said condensable fluid, said passages of said one pair of plates being open along the exterior of said tray and communicating with said lower portion, and a condensate collecting trough along the inner periphery of said ring and communicating with said condensable fluid passages for conducting away from said stack.
Claim 10
Dependent Claim
176 words
A heat exchanger for effecting heat transfer between at least two fluids including a condensable fluid, said heat exchanger comprising a stack of generally rectangular upright heat exchanger plates of thermally conductive material defining between successive pairs of said plates respective flow compartments alternating for said fluids, means for passing said condensable fluid through the passages of first pairs of said plates, and means for passing another of said fluids through the passages of second pairs of said plates, adjoining first and second pairs of plates having one plate in common for heat transfer between said fluids, said plates of said first pairs having transversely spaced linearly extending mutually parallel profiles extending inwardly into the passage for the condensable fluid and running at different angles to a condensate fall line along the plates defining the condensable fluid passages whereby crests of said profiles bear directly against one another at spaced locations over the areas of the plates defining the condensable fuid pasSages, said profiles forming liquid-flow ramps leading downwardly toward a condensate-discharge side of said stack.
Claim 11
Dependent Claim
176 words
A heat exchanger for effecting heat transfer between at least two fluids including a condensable fluid, said heat exchanger comprising a stack of generally rectangular upright heat exchanger plates of thermally conductive material defining between successive pairs of said plates respective flow compartments alternating for said fluids, means for passing said condensable fluid through the passages of first pairs of said plates, and means for passing another of said fluids through the passages of second pairs of said plates, adjoining first and second pairs of plates having one plate in common for heat transfer between said fluids, said plates of said first pairs having transversely spaced linearly extending mutually parallel profiles extending inwardly into the passage for the condensable fluid and running at different angles to a condensate fall line along the plates defining the condensable fluid passages whereby crests of said profiles bear directly against one another at spaced locations over the areas of the plates defining the condensable fuid pasSages, said profiles forming liquid-flow ramps leading downwardly toward a condensate-discharge side of said stack.
References Cited (Backward Citations)
US2616530A
Cited
US3631923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |