US3670713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-fired heater means
Assignee: Trane US Inc
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Filing: 1970-06-18
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Granted: 1972-06-20
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Expires: 1990-06-18
Abstract
Abstract Improved gas-fired heater means are provided for supplying heat to a space, such as a room, house, building, or the like. Basically, the improved heater means comprises a combination of highly efficient heat exhanger means for transferring heat generated by the combustion of a combustible gas-air mixture to air circulated between the heat exchanger means and the space to be heated at a rate of at least 3,500 BTU of heat per hour per pound of heat exchanger means material and high intensity combustor means for mixing fuel-gas with pressurized air to produce the combustible gas-air mixture and to burn that mixture to provide a source of heat of sufficient intensity to meet the heat transferring ability of the highly efficient heat exchanger means. The improved heater means provided by the present invention permits considerable weight and volume reduction and consequent cost savings in heat exchanger means material over conventional gas-fired heaters of comparable heating capacity.
Inventors
- 👤 Roy W Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:00
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/06; F24H3/08; F24H3/087
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
167 words
Improved gas-fired space heater means, comprising the combination of: heat exchanger means for transferring heat generated by the combustion of a combustible gas-air mixture to air circulated between said heat exchanger means and the space to be heated and combustor means for mixing fuel-gas with pressurized air to produce said combustible gas-air mixture and to burn said mixture; said heat exchanger comprising a plurality of tubes provided with fins on the exterior thereof; said combustor means comprising burner means including a generally horizontal trough-shaped member forming a primary mixing area and a secondary mixing area spaced apart by an ignition area, means including a plurality of gas inlet apertures adjacent the bottom of said trough-shaped member for supplying pressurized fuel-gas to said primary mixing area; and means for supplying pressurized air to said mixing areas including primary air inlet apertures adjacent the lower portion of said trough-shaped member and above said gas inlet apertures and secondary air inlet apertures along the upper portion of said trough-shaped member.
Claim 2
Dependent Claim
167 words
Improved gas-fired space heater means, comprising the combination of: heat exchanger means for transferring heat generated by the combustion of a combustible gas-air mixture to air circulated between said heat exchanger means and the space to be heated and combustor means for mixing fuel-gas with pressurized air to produce said combustible gas-air mixture and to burn said mixture; said heat exchanger comprising a plurality of tubes provided with fins on the exterior thereof; said combustor means comprising burner means including a generally horizontal trough-shaped member forming a primary mixing area and a secondary mixing area spaced apart by an ignition area, means including a plurality of gas inlet apertures adjacent the bottom of said trough-shaped member for supplying pressurized fuel-gas to said primary mixing area; and means for supplying pressurized air to said mixing areas including primary air inlet apertures adjacent the lower portion of said trough-shaped member and above said gas inlet apertures and secondary air inlet apertures along the upper portion of said trough-shaped member.
Claim 3
Dependent Claim
176 words
Improved gas-fired space heater means, comprising the combination of: heat exchanger means for transferring heat generated by the combustion of a combustible gas-air mixture to air circulated between said heat exchanger means and the space to be heated and combustor means for mixing fuel-gas with pressurized air to produce said combustible gas-air mixture and to burn said mixture; said combustor means comprising burner means including a horizontal trough having spaced side walls and a bottom wall forming a primary mixing area and a secondary mixing area spaced apart by an ignition area, means for supplying pressurized fuel-gas to said primary mixing area, and means for supplying pressurized air to said mixing areas; said means for supplying pressurized fuel-gas including a plurality of gas inlet apertures adjacent the bottom wall of said trough; and said means for supplying pressurized air to said mixing areas includes primary air inlet apertures in the primary mixing area of said trough and above said gas inlet apertures and secondary air inlet apertures along the upper portion of said trough side walls.
Claim 4
Dependent Claim
176 words
Improved gas-fired space heater means, comprising the combination of: heat exchanger means for transferring heat generated by the combustion of a combustible gas-air mixture to air circulated between said heat exchanger means and the space to be heated and combustor means for mixing fuel-gas with pressurized air to produce said combustible gas-air mixture and to burn said mixture; said combustor means comprising burner means including a horizontal trough having spaced side walls and a bottom wall forming a primary mixing area and a secondary mixing area spaced apart by an ignition area, means for supplying pressurized fuel-gas to said primary mixing area, and means for supplying pressurized air to said mixing areas; said means for supplying pressurized fuel-gas including a plurality of gas inlet apertures adjacent the bottom wall of said trough; and said means for supplying pressurized air to said mixing areas includes primary air inlet apertures in the primary mixing area of said trough and above said gas inlet apertures and secondary air inlet apertures along the upper portion of said trough side walls.
Claim 5
Dependent Claim
136 words
A gas-fired space heater means comprising the combination of: burner means including an elongate horizontally extending member of generally U-shaped cross section including opposed walls and an interconnecting wall; means for supplying pressurized fuel-gas to said burner means including a plurality of gas inlet apertures adjacent said interconnecting wall and extending substantially the length of said member; said opposed walls having at least one row of primary air apertures extending longitudinally thereof adjacent said gas inlet apertures and at least one row of secondary air apertures spaced from said row of primary air apertures; means for supplying pressurized air to said apertures; a heat exchanger comprising a plurality of parallel finned tubes; and elongate conduit means extending substantially the length of said elongate member connecting the open side of said elongate member to said heat exchanger.
Claim 6
Dependent Claim
136 words
A gas-fired space heater means comprising the combination of: burner means including an elongate horizontally extending member of generally U-shaped cross section including opposed walls and an interconnecting wall; means for supplying pressurized fuel-gas to said burner means including a plurality of gas inlet apertures adjacent said interconnecting wall and extending substantially the length of said member; said opposed walls having at least one row of primary air apertures extending longitudinally thereof adjacent said gas inlet apertures and at least one row of secondary air apertures spaced from said row of primary air apertures; means for supplying pressurized air to said apertures; a heat exchanger comprising a plurality of parallel finned tubes; and elongate conduit means extending substantially the length of said elongate member connecting the open side of said elongate member to said heat exchanger.
Claim 7
Dependent Claim
22 words
A gas-fired heater means according to claim 3 including a pressurized air supply plenum surrounding the side walls of said elongate member.
Claim 8
Dependent Claim
127 words
A gas-fired space heater means comprising the combination of: burner means including an elongate horizontal member of generally U-shaped cross section including opposed walls and an interconnecting wall; a perforated fuel gas pipe positioned within said member adjacent said interconnecting wall and extending substantially the length of said member; each of said opposed walls having at least one row of primary air apertures extending longitudinally of said member adjacent said gas pipe and at least one row of secondary air apertures spaced from said gas pipe; means for supplying pressurized air to said apertures; a heat exchanger comprising a plurality of finned tubes; and elongate conduit means extending substantially the length of said elongate member connecting said elongate member to one end of said heat exchanger tubes.
Claim 9
Dependent Claim
127 words
A gas-fired space heater means comprising the combination of: burner means including an elongate horizontal member of generally U-shaped cross section including opposed walls and an interconnecting wall; a perforated fuel gas pipe positioned within said member adjacent said interconnecting wall and extending substantially the length of said member; each of said opposed walls having at least one row of primary air apertures extending longitudinally of said member adjacent said gas pipe and at least one row of secondary air apertures spaced from said gas pipe; means for supplying pressurized air to said apertures; a heat exchanger comprising a plurality of finned tubes; and elongate conduit means extending substantially the length of said elongate member connecting said elongate member to one end of said heat exchanger tubes.
Claim 10
Dependent Claim
37 words
A gas-fired space heater means according to claim 5 in which said perforated gas pipe introducing fuel gas generally parallel to said opposed walls and said air apertures introducing air under pressure horizontally into said elongate member.
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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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |