US3601115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchangers
Assignee: Weather Rite Manufacturing
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Filing: 1970-02-05
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Granted: 1971-08-24
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Expires: 1990-02-05
Abstract
Abstract A high-flame facing area heat exchanger in which the air passageways pass both around and through the combustion chamber in a repetitive crisscross pattern. Some of the passageways which pass through the chamber are isolated and connected to feed the burner with preheated combustion air.
Inventors
- 👤 Richard N Weatherston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:50
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/06; F24H3/08; F24H3/087
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
179 words
A fuel burning heat exchanger comprising in combination: a combustion chamber having an elongate direction and a multitude of apertures along a first side which is generally parallel to said elongate direction, said multitude of apertures adapted to admit air to said combustion chamber over substantially the entire elongate length of the combustion chamber and further having a plurality of apertures contiguous to the air admission apertures, said plurality of apertures connected to a source of fuel and adapted to admit fuel to said combustion chamber over substantially the entire length of the combustion chamber; first plenum chamber means connected to said multitude of apertures so as to supply air thereto; a plurality of air passageways disposed around and throUgh said combustion chamber shaped to present a maximum area toward the combustion area inside said combustion chamber; means connecting at least one of said air passageways disposed through the combustion chamber to said first plenum chamber means so as to supply preheated air thereto; and blower means connected to said plurality of air passageways operable to move air therethrough.
Claim 2
Dependent Claim
179 words
A fuel burning heat exchanger comprising in combination: a combustion chamber having an elongate direction and a multitude of apertures along a first side which is generally parallel to said elongate direction, said multitude of apertures adapted to admit air to said combustion chamber over substantially the entire elongate length of the combustion chamber and further having a plurality of apertures contiguous to the air admission apertures, said plurality of apertures connected to a source of fuel and adapted to admit fuel to said combustion chamber over substantially the entire length of the combustion chamber; first plenum chamber means connected to said multitude of apertures so as to supply air thereto; a plurality of air passageways disposed around and throUgh said combustion chamber shaped to present a maximum area toward the combustion area inside said combustion chamber; means connecting at least one of said air passageways disposed through the combustion chamber to said first plenum chamber means so as to supply preheated air thereto; and blower means connected to said plurality of air passageways operable to move air therethrough.
Claim 3
Dependent Claim
71 words
The apparatus of claim 1 in which said plurality of air passageways disposed around said combustion chamber are defined by an outer housing surrounding said combustion chamber, said plurality of passageways around the combustion chamber comprising the spaces between the combustion chamber and said outer housing; and in which the plurality of air passageways disposed through said combustion chamber comprise heat conductive tunnels passing through generally orthogonal to said elongate direction.
Claim 4
Dependent Claim
26 words
The apparatus of claim 2 in which said tunnels comprise a first groups of generally similar tubes interwoven with a second group of generally similar tubes.
Claim 5
Dependent Claim
77 words
The apparatus of claim 3 in which said first group of tubes pass through the combustion chamber generally in a first diagonal direction and said second group of tubes pass through the combustion chamber generally in a second diagonal direction which forms an angle with respect to said first diagonal direction so that the exit ends of the tubes pass on either side of said first side of said combustion chamber with said multitude of apertures therebetween.
Claim 6
Dependent Claim
56 words
The apparatus of claim 4 in which said multitude of apertures comprise first and second apertures members positioned on each side of said plurality of fuel admission apertures and said first plenum chamber means comprises a first chamber in communication with said first apertured member and a second chamber in communication with said second apertured member.
Claim 7
Dependent Claim
50 words
The apparatus of claim 5 in which at least one of said first group of generally similar tubes is connected at its exit end to said first chamber and at least one of said second group of generally similar tubes is connected at its exit end to said second chamber.
Claim 8
Dependent Claim
43 words
The apparatus of claim 6 including a second plenum chamber means located and connected between said blower means and the entrance ends of said first and second groups of tubes and the entrance ends of the passageways which pass around the combustion chamber.
Claim 9
Dependent Claim
58 words
The apparatus of claim 7 in which said second plenum chamber means is defined by said outer housing and comprises the space between said outer housing and the second side of said combustion chamber which second side is opposite from said first side and disposed generally between the entrance ends of said first and second groups of tubes.
Claim 10
Dependent Claim
54 words
The apparatus of claim 8 including deflection plates disposed in said first and second chambers positioned to spread and diffuse air introduced from said tubes and in which plurality of fuel admitting apertures comprise a series of nozzles in a fuel feed tube disposed between said apertured plates and generally along said elongate direction.
Claim 11
Dependent Claim
46 words
The apparatus of claim 9 in which said apertured plates and said nozzled fuel feed tube comprise a separate assembly adapted to be removably positioned in a recess in said first side of said combustion chamber so as to form therein said first and second chambers.
References Cited (Backward Citations)
US1389408A
Cited
US3068854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |