Patent US3920067A successfully refreshed from Google Patents.
US3920067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger for continuous flow fluid heater
Assignee: MMS Ltd
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Filing: 1973-04-11
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Granted: 1975-11-18
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Expires: 1993-04-11
Abstract
Abstract A heat exchanger of the continuous flow tubular type which includes chambered header means including inlet chamber means and exhaust chamber means, a plurality of tubular elements communicating between said inlet chamber means and said exhaust chamber means along a flow path to maintain a minimum temperature differential between the interior and exterior of said tubular elements. A by-pass is defined whereby a portion of fluid is diverted from the inlet chamber to the exhaust chamber independent of said tubular elements, said by-pass including a variable flow restrictor device capable of maintaining a continuous diverted flow from said inlet chamber to said exhaust chamber in a degree related to the velocity of the fluid entering said inlet chamber. The baffle is formed of spring material capable of being deflected responsive to pressure within said inlet chamber and is mounted in intercepting relation to the mouth of the by-pass opening.
Inventors
- 👤 Herbert Schindler
- 👤 Willard O Ware
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:00
CPC Classifications
F; F28; F28F; F28F27/00; F28F27/02; F24; F24H; F24H1/00; F24H1/10; F24H1/12; F24H1/14; F24H1/145; F28F2250/00; F28F2250/06; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/7888; Y10T137/7891
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
158 words
A continuous flow fluid heater comprising: heat exchange means, means defining an outlet for delivering fluid to be heated to said heat exchange means and means defining an outlet for receiving heated fluid from said heat exchange means and delivering said heated fluid therefrom, means defining a by-pass passage capable of diverting continuously a selected portion of said fluid to be heated from said inlet to said outlet independent of said heat exchange means, and flow control means arranged at said by-pass passage adjustably to control the quantity of diverted fluid between a minimum quantity and a variable quantity related to pressure conditions within said inlet, said flow control means comprising resilient deflectable baffle and means for securing said a resilient baffle positioned over said by-pass passage and spaced therefrom to define a minimum clearance passage effective to maintain continuous fluid flow through said by-pass passage, said baffle being deflectable about an axis spaced from said by-pass passage.
Claim 2
Dependent Claim
158 words
A continuous flow fluid heater comprising: heat exchange means, means defining an outlet for delivering fluid to be heated to said heat exchange means and means defining an outlet for receiving heated fluid from said heat exchange means and delivering said heated fluid therefrom, means defining a by-pass passage capable of diverting continuously a selected portion of said fluid to be heated from said inlet to said outlet independent of said heat exchange means, and flow control means arranged at said by-pass passage adjustably to control the quantity of diverted fluid between a minimum quantity and a variable quantity related to pressure conditions within said inlet, said flow control means comprising resilient deflectable baffle and means for securing said a resilient baffle positioned over said by-pass passage and spaced therefrom to define a minimum clearance passage effective to maintain continuous fluid flow through said by-pass passage, said baffle being deflectable about an axis spaced from said by-pass passage.
Claim 3
Dependent Claim
31 words
The structure as claimed in claim 1 in which said baffle is responsive to fluid pressure within said inlet whereby variably to increase the clearance between it and said by-pass passage.
Claim 4
Dependent Claim
18 words
The structure as claimed in claim 2 in which said baffle is a planar member of spring metal.
Claim 5
Dependent Claim
29 words
The structure as claimed in claim 2 in which said baffle member is formed of a bimetallic material whereby to be responsive additionally to temperature conditions within said inlet.
Claim 6
Dependent Claim
36 words
The structure as claimed in claim 1 in which said securing means comprise framing means secured within said by-pass passage and bridging means integral with said baffle and said framing means for establishing said minimum clearance.
Claim 7
Dependent Claim
16 words
The structure as claimed in claim 1 in which said baffle comprises a spring metal member.
Claim 8
Dependent Claim
52 words
The structure as claimed in claim 1 in which said means securing said baffle at the by-pass opening comprises a U-shaped frame of size and configuration selected to seat within said by-pass passage, means on said frame for retaining same within said passage and bridging means joining said baffle to said frame.
Claim 9
Dependent Claim
18 words
The structure as claimed in claim 7 in which the arms of said frame lie in parallel planes.
Claim 10
Dependent Claim
18 words
The structure as claimed in claim 7 in which said arms of said frame line in intersecting planes.
Claim 11
Dependent Claim
198 words
A continuous flow fluid heater comprising: heat exchange means, means defining an inlet for delivering fluid to be heated to said heat exchange means and means defining an outlet for receiving heated fluid from said heat exchange means and delivering said heated fluid therefrom, means defining a by-pass passage capable of diverting a selected portion of said fluid to be heated from said inlet to said outlet independent of said heat exchange means, and flow control means arranged at said by-pass passage adjustably to control the quantity of diverted fluid between a minimum quantity and a variable quantity related to pressure conditions within said inlet, said flow control means comprising resilient baffle means and means for securing said resilient baffle means in intercepting relation to flow through said by-pass passage, and last-mentioned securing means comprising a U-shaped frame of size and configuration to enable seating within said by-pass passage, means on said frame for retaining same within said passage and connecting means joining said baffle means to said frame, tab means on said frame at the free ends of the arms thereof and directed inwardly of said frame, said tab means capable of securement within said by-pass passage.
Claim 12
Dependent Claim
198 words
A continuous flow fluid heater comprising: heat exchange means, means defining an inlet for delivering fluid to be heated to said heat exchange means and means defining an outlet for receiving heated fluid from said heat exchange means and delivering said heated fluid therefrom, means defining a by-pass passage capable of diverting a selected portion of said fluid to be heated from said inlet to said outlet independent of said heat exchange means, and flow control means arranged at said by-pass passage adjustably to control the quantity of diverted fluid between a minimum quantity and a variable quantity related to pressure conditions within said inlet, said flow control means comprising resilient baffle means and means for securing said resilient baffle means in intercepting relation to flow through said by-pass passage, and last-mentioned securing means comprising a U-shaped frame of size and configuration to enable seating within said by-pass passage, means on said frame for retaining same within said passage and connecting means joining said baffle means to said frame, tab means on said frame at the free ends of the arms thereof and directed inwardly of said frame, said tab means capable of securement within said by-pass passage.
Claim 13
Dependent Claim
107 words
The structure as claimed in claim 1 in which said heat exchange means comrises a plurality of hollow tubular heat exchanger elements arranged in heat exchange relation with a heating medium wherein the temperature varies between areas thereof, said heat exchange elements being coupled between said inlet means and said outlet means and means defining a flow path through said heat exchanger elements by way of selected ones of said tubes in the direction of continuously increasing tube temperature whereby the temperature differential between the ambient to which the tube is subjected and the interior of the tubular element is minimized along the length of said path.
Claim 14
Dependent Claim
29 words
The strUcture as claimed in claim 11 in which said flow path first traverses the cooler tubes, then continues through the plural tubes in the direction of increasing temperature.
Claim 15
Dependent Claim
190 words
A continuous flow heat exchanger of the tubular type which includes an inlet, an outlet, a plurality of tubular elements communicating between the inlet and the outlet and disposed in heat transfer relation to a differentially heated medium wherein there are areas of differing temperature, means defining a flow path to direct the fluid to be heated through the tubes from the inlet to the outlet in order or increasing tube temperature whereby the temperature differential between the ambient to which the tube is subjected and the interior temperature of the fluid within the tube is minimized progressively along said flow path, and means are provided defining a by-pass passage between the inlet and the outlet independent of said tubes, said by-pass passage having a deflectable baffle disposed in intercepting relation to fluid flow therethrough, said baffle being spaced from said passage to define a minimum clearance to enable continuous flow of fluid from the inlet therethrough, the clearance between said by-pass passage and said baffle being variable above said minimum, responsive to fluid pressure within the onlet, said baffle being deflectable about an axis spaced from said by-pass passage.
Claim 16
Dependent Claim
190 words
A continuous flow heat exchanger of the tubular type which includes an inlet, an outlet, a plurality of tubular elements communicating between the inlet and the outlet and disposed in heat transfer relation to a differentially heated medium wherein there are areas of differing temperature, means defining a flow path to direct the fluid to be heated through the tubes from the inlet to the outlet in order or increasing tube temperature whereby the temperature differential between the ambient to which the tube is subjected and the interior temperature of the fluid within the tube is minimized progressively along said flow path, and means are provided defining a by-pass passage between the inlet and the outlet independent of said tubes, said by-pass passage having a deflectable baffle disposed in intercepting relation to fluid flow therethrough, said baffle being spaced from said passage to define a minimum clearance to enable continuous flow of fluid from the inlet therethrough, the clearance between said by-pass passage and said baffle being variable above said minimum, responsive to fluid pressure within the onlet, said baffle being deflectable about an axis spaced from said by-pass passage.
Claim 17
Dependent Claim
17 words
The heat exchanger is claimed in claim 13 in which said baffle comprises a resilient sheet member.
Claim 18
Dependent Claim
16 words
The structure as claimed in claim 13 in which said baffle is formed of spring metal.
Claim 19
Dependent Claim
22 words
The structure as claimed in claim 14 in which said baffle is formed of a bimetal whereby to be additionally temperature responsive.
Claim 20
Dependent Claim
34 words
The structure as claimed in claim 13 in which said baffle comprises a sheet of spring metal held fixedly a predetermined distance from the mouth of said by-pass passage to establish said minimum clearance.
Claim 21
Dependent Claim
23 words
The structure as claimed in claim 17 in which said spring metal is bimetallic, being responsive additionally to temperature to vary the clearance.
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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) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |