US5452708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal horizontal-vertical (H-V) direct-vented gas heating unit
Assignee: HEARTH TECHNOLOGIES Inc
•
Filing: 1993-11-24
•
Granted: 1995-09-26
•
Expires: 2013-11-24
Abstract
Abstract A novel horizontal-vertical (H-V) direct vented gas heating unit comprises a box-shaped heating unit having seven walls which surround a combustion chamber. One of the seven walls comprises a diagonal wall connected between the back vertical wall and the top wall. An exhaust stack extends through the diagonal wall and is surrounded at its exit by a coaxial fresh air inlet adapter which connects to a fresh air passageway which extends down the back wall. An inner heat exchanger comprise passageways which extend along six of the seven walls outside the combustion chamber. The fresh air passageway on the back wall extends through the heat exchanger passageway in the back wall and enters a plenum having two exits, one of which is positioned opposite the upper level and the other opposite the lower level of a dual level burner.
Inventors
- 👤 Ronald J. Shimek
- 👤 Chad T. Vogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:10
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/1808
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
296 words
A universal horizontal-vertical direct-vented gas heating fireplace for installation in an interior space to be heated, comprising: a box-shaped heating unit having seven walls comprising a top wall, a bottom wall, four vertical side walls and a diagonal back wall, said diagonal back wall connecting between said top wall and a back vertical wall of one of said four vertical walls, said diagonal back wall having a first heat exchanger passageway and an outer fresh combustion air passageway connected therein, a combustion chamber connected in said box-shaped heating unit inside said seven walls, a second heat exchanger comprising baffle means connected to the two sidewalls of the combustion chamber adjacent to the rear wall, said baffle means includes an inlet connected to said first heat exchanger passageway, an exhaust stack extending through said diagonal back wall and through said first heat exchanger passageway and connected into said combustion chamber at an angle perpendicular to said diagonal back wall, a fresh combustion air inlet adapter mounted on said diagonal back wall surrounding said exhaust stack and connected to said outer fresh combustion air passageway in said diagonal back wall, inner heat exchanger passageways connected to said combustion chamber in said bottom wall, said top wall and a back vertical wall and being interconnected with said first heat exchanger passageway in said diagonal back wall, a fresh air passageway in said back vertical wall connected to said outer fresh combustion air passageway in said diagonal wall and connected into the back of said combustion chamber, and said exhaust stack and said combustion air inlet adapter being directed both backward and upward at an inclining angle so that an elbow connection of approximately forty-five degrees will connect the fireplace to either a horizontal or a vertical exhaust stack extension.
Claim 2
Dependent Claim
296 words
A universal horizontal-vertical direct-vented gas heating fireplace for installation in an interior space to be heated, comprising: a box-shaped heating unit having seven walls comprising a top wall, a bottom wall, four vertical side walls and a diagonal back wall, said diagonal back wall connecting between said top wall and a back vertical wall of one of said four vertical walls, said diagonal back wall having a first heat exchanger passageway and an outer fresh combustion air passageway connected therein, a combustion chamber connected in said box-shaped heating unit inside said seven walls, a second heat exchanger comprising baffle means connected to the two sidewalls of the combustion chamber adjacent to the rear wall, said baffle means includes an inlet connected to said first heat exchanger passageway, an exhaust stack extending through said diagonal back wall and through said first heat exchanger passageway and connected into said combustion chamber at an angle perpendicular to said diagonal back wall, a fresh combustion air inlet adapter mounted on said diagonal back wall surrounding said exhaust stack and connected to said outer fresh combustion air passageway in said diagonal back wall, inner heat exchanger passageways connected to said combustion chamber in said bottom wall, said top wall and a back vertical wall and being interconnected with said first heat exchanger passageway in said diagonal back wall, a fresh air passageway in said back vertical wall connected to said outer fresh combustion air passageway in said diagonal wall and connected into the back of said combustion chamber, and said exhaust stack and said combustion air inlet adapter being directed both backward and upward at an inclining angle so that an elbow connection of approximately forty-five degrees will connect the fireplace to either a horizontal or a vertical exhaust stack extension.
Claim 3
Dependent Claim
47 words
A universal horizontal-vertical heating unit as set forth in claim 1 wherein said baffle means includes an outlet, and blower means in said heat exchanger passageway in said bottom wall having an inlet coupled to the outlet of said baffle means and to said heat exchanger passageway.
Claim 4
Dependent Claim
55 words
A universal horizontal-vertical heating unit as set forth in claim 2 wherein said blower means further comprises exhaust means for directing preheated air from said baffle means and from said heat exchanger passageway in said bottom wall into said rear vertical wall having an inner heat exchanger passageway and a outer second heat exchanger passageway.
Claim 5
Dependent Claim
32 words
A universal horizontal-vertical heating unit as set forth in claim 3 wherein said second heat exchanger comprises an outer passageway in said top wall connected to said outer second heat exchanger passageway.
Claim 6
Dependent Claim
234 words
A universal horizontal-vertical direct-vented gas heating fireplace, comprising: a box-shaped outer fireplace unit comprising a plurality of connected sheet metal panels, a combustion chamber inside of and spaced apart from said outer fireplace unit comprising a plurality of connected sheet metal panels, said sheet metal panels of said fireplace unit and said combustion chamber forming a plurality of interconnected walls therebetween, a room air heat exchanger comprising interconnected bottom, back vertical, back diagonal and top walls, a second room air heat exchanger comprising a sheet metal panel in said back vertical and back diagonal walls and connected to back vertical and back diagonal panels of said combustion chamber, a fresh air passageway comprising a formed sheet metal panel connected to back vertical and back diagonal panels in said back vertical and back diagonal walls, a combustion air plenum inside said combustion chamber connected to said fresh air passageway, a fresh combustion air opening formed in back diagonal panel of said fireplace unit and opening into said fresh air passageway, an exhaust stack extending through said back diagonal wall, said fresh air passageway and said second heat exchanger and having an opening connecting into said combustion chamber, and an adjustable exhaust draft baffle in said combustion chamber spaced apart from and covering said exhaust stack opening for restricting the flow of hot exhaust gases and for increasing the thermal efficiency of said gas heating fireplace.
Claim 7
Dependent Claim
234 words
A universal horizontal-vertical direct-vented gas heating fireplace, comprising: a box-shaped outer fireplace unit comprising a plurality of connected sheet metal panels, a combustion chamber inside of and spaced apart from said outer fireplace unit comprising a plurality of connected sheet metal panels, said sheet metal panels of said fireplace unit and said combustion chamber forming a plurality of interconnected walls therebetween, a room air heat exchanger comprising interconnected bottom, back vertical, back diagonal and top walls, a second room air heat exchanger comprising a sheet metal panel in said back vertical and back diagonal walls and connected to back vertical and back diagonal panels of said combustion chamber, a fresh air passageway comprising a formed sheet metal panel connected to back vertical and back diagonal panels in said back vertical and back diagonal walls, a combustion air plenum inside said combustion chamber connected to said fresh air passageway, a fresh combustion air opening formed in back diagonal panel of said fireplace unit and opening into said fresh air passageway, an exhaust stack extending through said back diagonal wall, said fresh air passageway and said second heat exchanger and having an opening connecting into said combustion chamber, and an adjustable exhaust draft baffle in said combustion chamber spaced apart from and covering said exhaust stack opening for restricting the flow of hot exhaust gases and for increasing the thermal efficiency of said gas heating fireplace.
Claim 8
Dependent Claim
68 words
A universal horizontal-vertical heating unit as set forth in claim 5 which further includes two level burner means having a lower and an upper level mounted on said combustion chamber floor and said fresh air plenum, respectively, and a lower slot combustion air exit and an upper slot combustion air exit in said fresh air plenum opposite the lower and upper levels of said two level burner means.
Claim 9
Dependent Claim
43 words
A universal horizontal-vertical heating unit as set forth in claim 5 which further includes means for restricting the flow of exhaust gases from said burner means to variably compensate for variable draft conditions in said exhaust stack imposed by different exhaust stack extensions.
Claim 10
Dependent Claim
31 words
A universal horizontal-vertical heating unit as set forth in claim 5, which further includes means in said combustion chamber for automatically adjusting the draft of exhaust gases in said exhaust stack.
Claim 11
Dependent Claim
38 words
A universal horizontal-vertical heating unit as set forth in claim 8 wherein said means for adjusting the draft of exhaust gases in said exhaust stack comprises a movable diverter mounted in said combustion chamber over said exhaust stack.
Claim 12
Dependent Claim
34 words
A universal horizontal-vertical heating unit as set forth in claim 8 wherein said means for adjusting the draft of exhaust gases in said exhaust stack comprises a movable damper mounted in said exhaust stack.
Claim 13
Dependent Claim
59 words
A universal horizontal-vertical heating unit as set forth in claim 8 wherein said means for adjusting the draft of exhaust gases in said exhaust stack comprises means for sensing the temperature in said combustion chamber coupled to said means for automatically decreasing the draft of said exhaust gases from said combustion chamber when a predetermined lower threshold temperature occurs.
Claim 14
Dependent Claim
37 words
A universal horizontal-vertical heating unit as set forth in claim 5 which further includes a decorative top unit mounted on said heating unit and a pedestal unit for supporting said heating unit to provide a direct-vented stove.
Claim 15
Dependent Claim
230 words
A universal horizontal-vertical direct vented gas heating fireplace, comprising: a box-shaped outer fireplace unit comprising a plurality of connect sheet metal panels, a combustion chamber inside and spaced apart from said outer fireplace unit comprising a plurality of connected sheet metal panels, said sheet metal panels of said fireplace unit and said combustion chamber forming a plurality of interconnected walls between said fireplace unit and said combustion chamber, room air heat exchanger means comprising interconnected bottom, back vertical, back diagonal and top walls, a fresh air passageway comprising a formed sheet metal panel connected to panels in said back vertical and back diagonal walls outside of said combustion chamber, a burner system in said combustion chamber, a combustion air plenum in said combustion chamber extending under said burner system, a fresh combustion air opening extending through a back diagonal panel of said fireplace unit and connecting into said fresh air passageway, an exhaust stack extending through said back diagonal wall of said fireplace and through said fresh air passageway forming an opening connecting into said combustion chamber, and an exhaust draft baffle in said combustion chamber spaced apart from and covering said exhaust stack opening, said exhaust draft baffle having means for adjustably restricting the flow of hot exhaust gases from combustion chamber to compensate for different draft conditions and for increasing the thermal efficiency of said gas heating fireplace.
Claim 16
Dependent Claim
230 words
A universal horizontal-vertical direct vented gas heating fireplace, comprising: a box-shaped outer fireplace unit comprising a plurality of connect sheet metal panels, a combustion chamber inside and spaced apart from said outer fireplace unit comprising a plurality of connected sheet metal panels, said sheet metal panels of said fireplace unit and said combustion chamber forming a plurality of interconnected walls between said fireplace unit and said combustion chamber, room air heat exchanger means comprising interconnected bottom, back vertical, back diagonal and top walls, a fresh air passageway comprising a formed sheet metal panel connected to panels in said back vertical and back diagonal walls outside of said combustion chamber, a burner system in said combustion chamber, a combustion air plenum in said combustion chamber extending under said burner system, a fresh combustion air opening extending through a back diagonal panel of said fireplace unit and connecting into said fresh air passageway, an exhaust stack extending through said back diagonal wall of said fireplace and through said fresh air passageway forming an opening connecting into said combustion chamber, and an exhaust draft baffle in said combustion chamber spaced apart from and covering said exhaust stack opening, said exhaust draft baffle having means for adjustably restricting the flow of hot exhaust gases from combustion chamber to compensate for different draft conditions and for increasing the thermal efficiency of said gas heating fireplace.
Claim 17
Dependent Claim
36 words
A universal horizontal-vertical heating unit as set forth in claim 13 wherein said fresh air passageway comprises a channel shaped member connected to the back of said combustion chamber in said room air heat exchanger means.
References Cited (Backward Citations)
US2131763A
Cited
US3096754A
Cited
US4015581A
Cited
US4285327A
Cited
US4262608A
Cited
US4519376A
Cited
US4653467A
Cited
US4793322A
Cited
US5014684A
Cited
US4909227A
Cited
US5016609A
Cited
US5076254A
Cited
US5218953A
Cited
US5267552A
Cited
US5320086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-09-25 | 1999-03-27 | 1999-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-25 | 2003-03-27 | 2003-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-25 | 2007-03-27 | 2007-09-26 | $7700.00 | Window Closed / Lapsed |