US3901212A - Fireplace heat extractor - Google Patents

Fireplace heat extractor Download PDF

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Publication number
US3901212A
US3901212A US494027A US49402774A US3901212A US 3901212 A US3901212 A US 3901212A US 494027 A US494027 A US 494027A US 49402774 A US49402774 A US 49402774A US 3901212 A US3901212 A US 3901212A
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fireplace
header
opening
array
hood
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US494027A
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James S Stites
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/185—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion
    • F24B1/188—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by use of heat exchange means , e.g. using a particular heat exchange medium, e.g. oil, gas  
    • F24B1/1885—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by use of heat exchange means , e.g. using a particular heat exchange medium, e.g. oil, gas   the heat exchange medium being air only
    • F24B1/1886—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by use of heat exchange means , e.g. using a particular heat exchange medium, e.g. oil, gas   the heat exchange medium being air only the heat exchanger comprising only tubular air ducts within the fire

Definitions

  • ABSTRACT The disclosure is of a fireplace heat extractor comprising a generally horizontal header to be positioned across the fireplace opening.
  • a blower directs air through the header and an array of tubular air ducts which extend downwardly and rearwardly from the header to function also as a fire basket. The ducts then extend up along the back of the fireplace and forwardly to open outward of the fireplace.
  • a hood and fire curtain assembly is slidably carried on the protruding ends of the air ducts to be adjustably positioned against the front of the fireplace.
  • I provide a horizontal header which extends from a small blower alongside the fireplace opening, back into the opening and thereacross.
  • An array of hot air ducts open from the header and extend downwardly and rearwardly to form a receptacle serving as a fire basket. From the rear of the fireplace opening, the air ducts extend upwardly along the rear wall of the fireplace and then forwardly across the flue opening to open outwardly of the fireplace.
  • a hood and fireplace curtain assembly is Slidably carried on the forwardly extending portions for adjustable positioning thereon.
  • Adjustable means are provided to adjust the height of the header and duct array whereby the hood may be leveled just above the fireplace opening and then positioned on the forward extensions until it is flush with the fireplace.
  • the total cross-section area of the air ducts is slightly greater than that of the header whereby the heated air will be projected from the open upper ends efficiently but quietly.
  • FIG. 1 is a view in perspective, partially broken away, showing a fireplace heat extractor embodying features of this invention
  • FIG. 2 is a front elevation view showing the fireplace heat extractor in place
  • FIG. 3 is a section view taken along line 33 of FIG. 2;
  • FIG. 4 is a partial section view taken along line 44 of FIG. 3.
  • a more or less conventional fireplace 10 including a face 12 of brick or the like, an opening 14 and a rear wall 16 sloping upwardly and forwardly to the flue 18, opening to the chimney.
  • the heat extractor 10 of this invention comprises a header 22 connected to the outlet duct 24 of a blower 26 by means of a rearwardly directed transition piep 28 which enables the header to be positioned well within the fireplace while the blower 26 is outside. While the header 22 is illustrated as being circular in crosssection, it is apparent that it may be rectangular, or of any other suitable configuration.
  • Connected to open from the rear of the header is an array of tubular air ducts 30 which are formed to slope downwardly from the header; then extend in a generally horizontal disposition toward the rear wall 16 where they bend upwardly at 32 to form a receptacle adapted to function as a fire basket to support fuel burning therein.
  • the array of tubular ducts 30 extend upwardly at an angle generally parallel to the rear wall of the fireplace and finally terminate in forward extensions 34 which open at 36 outward of the fireplace.
  • tubular ducts 30 are secured together as by means of reinforcing bars 38 and 40, which unify the overall structure and add considerable rigidity thereto.
  • the distal end 23 of the header 22 is blanked off, whereby air drawn in by the blower 26 is directed from the header, through the air ducts 30 and out the ports 36 into the room.
  • the ducts 30 are heated both by direct contact with the burning coals and, in the forwardly extending upper portions, by the heat rising through the flue 18.
  • the total cross-sectional area of the tubular air ducts 30 is slightly greater than that of the header 22, whereby the warm air will exit from the ports efficiently and quietly without velocity-induced noise.
  • I employ a header having an internal diameter of 2 /2 inches together with an array of seven air ducts, each with an internal diameter of one inch.
  • a hood 46 Slidably received on the upper, forwardly extending portions 34 of the air duct 30 is a hood 46.
  • Bearing sleeves 47(FIGS. 3 and 4 welded to the hood 46 around at least some of the openings 48 receive the upper air duct portions 34 whereby the sleeves 47 may be slidably adjusted along the portions 34 and secured in place, as by means of set screws 49.
  • a curtain rod 50 which carries a conventional fire curtain 52, as of steel mesh or the like, is formed in two overlapped sections secured secured to a mounting bracket 54 welded to the middle bearing sleeve 47.
  • the header and array are placed within a fireplace opening 14, and the height of the legs 42 and 44 are adjusted to bring the hood 46 to an elevation slightly above the top of the fireplace opening. Then the hood is pushed back into firm engagement with the face 12 of the fireplace to provide a neat, custom-made appearance.
  • An opening 56 may be provided in the screen to accommodate the transition section 28 of the header, whereby the blower is positioned outside and adjacent the fireplace opening 14 with the header itself well within the fireplace.
  • a fireplace heat extractor comprising:
  • a tubular, generally horizontal header adapted to be positioned within and across the lower portion of a fireplace opening
  • a horizontal curtain rod carried on at least one of said air duct top portions and extending below the array thereof adapted to span said fireplace opening;
  • the fireplace heat extractor defined by Claim 1 including:
  • a hood supporting said curtain rod and slidably carried on said air duct top portions, whereby, said means for adjusting the position of the curtain rod and said extensible legs may be employed jointly to position the hood snugly against the fireplace across the opening thereof.
  • the total flow capacity of said array of air ducts is slightly greater than that of said header.
  • a fireplace heat extractor comprising:
  • a tubular, generally horizontal header adapted to be positioned within and across the lower portion of a fireplace opening
  • a horizontal hood slidably carried on at least one of said air duct top portions and adapted to span said fireplace opening;

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Housings, Intake/Discharge, And Installation Of Fluid Heaters (AREA)
  • Baking, Grill, Roasting (AREA)

Abstract

The disclosure is of a fireplace heat extractor comprising a generally horizontal header to be positioned across the fireplace opening. A blower directs air through the header and an array of tubular air ducts which extend downwardly and rearwardly from the header to function also as a fire basket. The ducts then extend up along the back of the fireplace and forwardly to open outward of the fireplace. A hood and fire curtain assembly is slidably carried on the protruding ends of the air ducts to be adjustably positioned against the front of the fireplace.

Description

United States Patent [1 1 Stites Aug. 26, 1975 FIREPLACE HEAT EXTRACTOR [76] Inventor: James S. Stites, 615 Hunter Ln.,
Santa Rosa, Califv 95404 [22] Filed: Aug. 2, 1974 [21] Appl. No.: 494,027
[52] US. Cl 126/121; 126/165 [51] Int. Cl. F24B 7/00 [58] Field of Search 126/121, 165
[56] References Cited UNITED STATES PATENTS 1,747,259 2/1930 Pierce 126/121 2,161,723 6/1939 Rutland 126/121 FOREIGN PATENTS OR APPLICATIONS 978,392 12/1964 United Kingdom 126/121 900,622 7/1962 United Kingdom..... 126/121 354,485 10/1905 France 126/121 545,247 5/1942 United Kingdom l26/l2l Primary ExaminerWilliam F. ODea Assistant Examiner-Peter D. Ferguson Attorney, Agent, or FirmMelvin R. Stidham, Esq.
[ 5 7] ABSTRACT The disclosure is of a fireplace heat extractor comprising a generally horizontal header to be positioned across the fireplace opening. A blower directs air through the header and an array of tubular air ducts which extend downwardly and rearwardly from the header to function also as a fire basket. The ducts then extend up along the back of the fireplace and forwardly to open outward of the fireplace. A hood and fire curtain assembly is slidably carried on the protruding ends of the air ducts to be adjustably positioned against the front of the fireplace.
4 Claims, 4 Drawing Figures HI 0" amt! FIREPLACE HEAT EXTRACTOR BACKGROUND OF THE INVENTION Conventional fireplaces are notoriously inefficient as a source of heat inasmuch as a great percentage of the heat merely rises up and out of the chimney. As a result, fireplaces are provided primarily for appearance and decorative effect and other heating systems are generally required. Efforts have been made to utilize the fireplace heat by heating air blown through ducts and out into the room, but such have generally detracted from the ornamental appearance of the fireplace.
OBJECTS OF THE INVENTION It is an object of this invention to provide a fireplace heat extractor which may be adjusted to fit neatly and attractively within a fireplace opening.
It is a further object of this invention to provide a fireplace heat extractor which functions jointly as a fire basket.
It is a further object of this invention to provide a fireplace heat extractor which utilizes the heretofore wasted heat while porviding an attractive complement to the fireplace.
It is a further object of this invention to provide a fireplace heat extractor which enhances both the appearance and the heating efficiency of the fireplace.
Other objects and advantages of this invention will become apparent from the description to follow when read in conjunction with the accompanying drawings.
SUMMARY OF THE INVENTION In carrying out this invention, I provide a horizontal header which extends from a small blower alongside the fireplace opening, back into the opening and thereacross. An array of hot air ducts open from the header and extend downwardly and rearwardly to form a receptacle serving as a fire basket. From the rear of the fireplace opening, the air ducts extend upwardly along the rear wall of the fireplace and then forwardly across the flue opening to open outwardly of the fireplace. Slidably carried on the forwardly extending portions for adjustable positioning thereon, is a hood and fireplace curtain assembly. Adjustable means are provided to adjust the height of the header and duct array whereby the hood may be leveled just above the fireplace opening and then positioned on the forward extensions until it is flush with the fireplace. The total cross-section area of the air ducts is slightly greater than that of the header whereby the heated air will be projected from the open upper ends efficiently but quietly.
BRIEF DESCRIPTION OF THE DRAWINGS In the drawings:
FIG. 1 is a view in perspective, partially broken away, showing a fireplace heat extractor embodying features of this invention;
FIG. 2 is a front elevation view showing the fireplace heat extractor in place;
FIG. 3 is a section view taken along line 33 of FIG. 2; and
FIG. 4 is a partial section view taken along line 44 of FIG. 3.
DESCRIPTION OF A PREFERRED EMBODIMENT Referring now to the drawings with greater particularity, there is shown a more or less conventional fireplace 10 including a face 12 of brick or the like, an opening 14 and a rear wall 16 sloping upwardly and forwardly to the flue 18, opening to the chimney.
The heat extractor 10 of this invention comprises a header 22 connected to the outlet duct 24 of a blower 26 by means of a rearwardly directed transition piep 28 which enables the header to be positioned well within the fireplace while the blower 26 is outside. While the header 22 is illustrated as being circular in crosssection, it is apparent that it may be rectangular, or of any other suitable configuration. Connected to open from the rear of the header is an array of tubular air ducts 30 which are formed to slope downwardly from the header; then extend in a generally horizontal disposition toward the rear wall 16 where they bend upwardly at 32 to form a receptacle adapted to function as a fire basket to support fuel burning therein. The array of tubular ducts 30 extend upwardly at an angle generally parallel to the rear wall of the fireplace and finally terminate in forward extensions 34 which open at 36 outward of the fireplace.
The tubular ducts 30 are secured together as by means of reinforcing bars 38 and 40, which unify the overall structure and add considerable rigidity thereto. Extensible legs 42 and 44 secured to the cross bar 40 and the header 22, respectively, support the unified structure 20 and enable adjustment of its height and level.
The distal end 23 of the header 22 is blanked off, whereby air drawn in by the blower 26 is directed from the header, through the air ducts 30 and out the ports 36 into the room. The ducts 30 are heated both by direct contact with the burning coals and, in the forwardly extending upper portions, by the heat rising through the flue 18. I
Preferably the total cross-sectional area of the tubular air ducts 30 is slightly greater than that of the header 22, whereby the warm air will exit from the ports efficiently and quietly without velocity-induced noise. For example, in one embodiment, I employ a header having an internal diameter of 2 /2 inches together with an array of seven air ducts, each with an internal diameter of one inch.
Slidably received on the upper, forwardly extending portions 34 of the air duct 30 is a hood 46. Bearing sleeves 47(FIGS. 3 and 4 welded to the hood 46 around at least some of the openings 48 receive the upper air duct portions 34 whereby the sleeves 47 may be slidably adjusted along the portions 34 and secured in place, as by means of set screws 49. A curtain rod 50 which carries a conventional fire curtain 52, as of steel mesh or the like, is formed in two overlapped sections secured secured to a mounting bracket 54 welded to the middle bearing sleeve 47.
In installation of the device, the header and array are placed within a fireplace opening 14, and the height of the legs 42 and 44 are adjusted to bring the hood 46 to an elevation slightly above the top of the fireplace opening. Then the hood is pushed back into firm engagement with the face 12 of the fireplace to provide a neat, custom-made appearance. An opening 56 may be provided in the screen to accommodate the transition section 28 of the header, whereby the blower is positioned outside and adjacent the fireplace opening 14 with the header itself well within the fireplace.
While this invention has been described in conjunction with a preferred embodiment thereof, it is obvious that modifications and changes therein may be made by those skilled in the art without departing from the spirit and scope of this invention.
What is claimed as invention is:
l. A fireplace heat extractor comprising:
a tubular, generally horizontal header adapted to be positioned within and across the lower portion of a fireplace opening;
an air inlet tubular section connected at one end of said header and disposed to extend outward of a fireplace opening;
a blower connected to said inlet tubular section;
the other end of said header being imperforate; an array of tubular air ducts opening from said header and extending downwardly and rearwardly therefrom to form a receptacle for fireplace fuel and then upwardly, terminating in forwardly extending top portions adapted to be directed outwardly of said fireplace opening across the upper portion thereof;
outlet openings in the ends of said top portions;
a horizontal curtain rod carried on at least one of said air duct top portions and extending below the array thereof adapted to span said fireplace opening;
extensible legs supporting said header and air duct array for adjusting the elevation and level of said curtain rod;
means for adjusting the position of said curtain rod foreand aft of said duct top portion;
a fire curtain carried on said curtain rod; and
an opening in said curtain through which said air inlet tubular section extends.
2. The fireplace heat extractor defined by Claim 1 including:
a hood supporting said curtain rod and slidably carried on said air duct top portions, whereby, said means for adjusting the position of the curtain rod and said extensible legs may be employed jointly to position the hood snugly against the fireplace across the opening thereof.
3. The fireplace heat extractor defined by claim 1 wherein:
the total flow capacity of said array of air ducts is slightly greater than that of said header.
4. A fireplace heat extractor comprising:
a tubular, generally horizontal header adapted to be positioned within and across the lower portion of a fireplace opening;
an air inlet tubular section connected at one end of said header and disposed to extend outward of a fireplace opening;
a blower connected to said inlet tubular section;
the other end of said header being imperforate;
an array of tubular air ducts opening from said header and extending downwardly and rearwardly therefrom to form a receptacle for fireplace fuel, and then upwardly, terminating in forwardly extending top portions adapted to be directed outwardly of said fireplace opening across the upper portion thereof;
outlet openings in the ends of said top portions;
a horizontal hood slidably carried on at least one of said air duct top portions and adapted to span said fireplace opening;
means for adjusting the position of said hood fore and aft of said duct top portion; and
extensible legs supporting said header and air duct array for adjusting the elevation and level of said hood.

Claims (4)

1. A fireplace heat extractor comprising: a tubular, generally horizontal header adapted to be positioned within and across the lower portion of a fireplace opening; an air inlet tubular section connected at one end of said header and disposed to extend outward of a fireplace opening; a blower connected to said inlet tUbular section; the other end of said header being imperforate; an array of tubular air ducts opening from said header and extending downwardly and rearwardly therefrom to form a receptacle for fireplace fuel and then upwardly, terminating in forwardly extending top portions adapted to be directed outwardly of said fireplace opening across the upper portion thereof; outlet openings in the ends of said top portions; a horizontal curtain rod carried on at least one of said air duct top portions and extending below the array thereof adapted to span said fireplace opening; extensible legs supporting said header and air duct array for adjusting the elevation and level of said curtain rod; means for adjusting the position of said curtain rod foreand aft of said duct top portion; a fire curtain carried on said curtain rod; and an opening in said curtain through which said air inlet tubular section extends.
2. The fireplace heat extractor defined by Claim 1 including: a hood supporting said curtain rod and slidably carried on said air duct top portions, whereby, said means for adjusting the position of the curtain rod and said extensible legs may be employed jointly to position the hood snugly against the fireplace across the opening thereof.
3. The fireplace heat extractor defined by claim 1 wherein: the total flow capacity of said array of air ducts is slightly greater than that of said header.
4. A fireplace heat extractor comprising: a tubular, generally horizontal header adapted to be positioned within and across the lower portion of a fireplace opening; an air inlet tubular section connected at one end of said header and disposed to extend outward of a fireplace opening; a blower connected to said inlet tubular section; the other end of said header being imperforate; an array of tubular air ducts opening from said header and extending downwardly and rearwardly therefrom to form a receptacle for fireplace fuel, and then upwardly, terminating in forwardly extending top portions adapted to be directed outwardly of said fireplace opening across the upper portion thereof; outlet openings in the ends of said top portions; a horizontal hood slidably carried on at least one of said air duct top portions and adapted to span said fireplace opening; means for adjusting the position of said hood fore and aft of said duct top portion; and extensible legs supporting said header and air duct array for adjusting the elevation and level of said hood.
US494027A 1974-08-02 1974-08-02 Fireplace heat extractor Expired - Lifetime US3901212A (en)

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Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4008704A (en) * 1975-06-10 1977-02-22 Petrie Henry W Universally adjustable forced air fireplace heater
US4018209A (en) * 1975-11-12 1977-04-19 Gene Ferruccio Bonvicini Air heater
US4018210A (en) * 1975-08-28 1977-04-19 Shenandoah Manufacturing Company, Inc. Forced air convector/heater fireplace grate structure
USD245097S (en) * 1975-04-28 1977-07-19 Production Experts, Inc. Housing for heat dispenser for a tubular fireplace heater
US4049196A (en) * 1976-03-08 1977-09-20 Bergami Jr Samuel S Fireplace heater, circulator, and humidifier system
US4068650A (en) * 1975-12-18 1978-01-17 Nelson Clifford H Fireplace heating channel
USD248565S (en) * 1977-03-04 1978-07-18 Watson Covington B Combined heat exchanger and fireplace grate or the like
US4112914A (en) * 1975-01-02 1978-09-12 Brown Rex M Combined fireplace hood and heating unit
US4129113A (en) * 1977-03-30 1978-12-12 Thermograte, Inc. Combination glass door and heat-exchanging grate for fireplaces
US4131106A (en) * 1976-09-30 1978-12-26 Rusinek Jr Stanley Energy saving fireplace
US4163442A (en) * 1977-10-17 1979-08-07 Welty Robert O Fireplace heat system
US4175539A (en) * 1978-01-30 1979-11-27 Fireplace Energy Inc. Fireplace heater and home pressurization system
US4195778A (en) * 1977-11-15 1980-04-01 Hyten Jesse G Auxiliary air heater for fireplaces
US4197829A (en) * 1978-06-29 1980-04-15 Heatco, Inc. Heat exchanger for use in fireplace
US4204519A (en) * 1978-07-24 1980-05-27 Towery Mark W Forced hot air fireplace attachment
US4213443A (en) * 1978-03-13 1980-07-22 All Nighter Stove Works, Inc. Stove construction
US4219005A (en) * 1978-03-06 1980-08-26 Alfred Boahn Fireplace heating unit
US4254757A (en) * 1979-07-24 1981-03-10 Charles Emmendorfer Fireplace heat generating system
USRE30725E (en) * 1980-02-26 1981-09-01 Fireplace grate
FR2478271A1 (en) * 1980-03-12 1981-09-18 Faure Rene Michel Heat recuperator for open fireplace - comprises grid of open ended tubes carrying burning logs and circulating heated air into room
EP0038000A2 (en) * 1980-04-14 1981-10-21 von Arx, Paul Heating insert for fireplace
US4320740A (en) * 1978-12-22 1982-03-23 Lassy Carl O Fireplace heater with reflector, heat retainer, forced draft and grate
US4414957A (en) * 1982-03-17 1983-11-15 Ting Enterprises, Inc. Fireplace and stove apparatus
US5934270A (en) * 1997-01-30 1999-08-10 Kim; Sinil Fireplace heat exchange device
US20050257787A1 (en) * 2004-05-18 2005-11-24 Dolton Edward G Iii Fireplace heat recovery system
US20060088418A1 (en) * 2002-11-27 2006-04-27 Revcor, Inc. Fan assembly and method
US7354244B2 (en) 2004-09-01 2008-04-08 Aos Holding Company Blower and method of conveying fluids
US20160054005A1 (en) * 2014-08-21 2016-02-25 Ortal - Heating & Air Conditioning Systems Ltd. Heating system including a safety screen

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4535751A (en) * 1984-05-14 1985-08-20 Foyer D'aciernergie Inc. Heat recuperator for fireplace

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1747259A (en) * 1928-07-09 1930-02-18 Jefferson F Pierce Heater for fireplaces
US2161723A (en) * 1938-07-29 1939-06-06 Jesse B Boyett Fireplace heater

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1747259A (en) * 1928-07-09 1930-02-18 Jefferson F Pierce Heater for fireplaces
US2161723A (en) * 1938-07-29 1939-06-06 Jesse B Boyett Fireplace heater

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112914A (en) * 1975-01-02 1978-09-12 Brown Rex M Combined fireplace hood and heating unit
USD245097S (en) * 1975-04-28 1977-07-19 Production Experts, Inc. Housing for heat dispenser for a tubular fireplace heater
US4008704A (en) * 1975-06-10 1977-02-22 Petrie Henry W Universally adjustable forced air fireplace heater
US4018210A (en) * 1975-08-28 1977-04-19 Shenandoah Manufacturing Company, Inc. Forced air convector/heater fireplace grate structure
US4018209A (en) * 1975-11-12 1977-04-19 Gene Ferruccio Bonvicini Air heater
US4068650A (en) * 1975-12-18 1978-01-17 Nelson Clifford H Fireplace heating channel
US4049196A (en) * 1976-03-08 1977-09-20 Bergami Jr Samuel S Fireplace heater, circulator, and humidifier system
US4131106A (en) * 1976-09-30 1978-12-26 Rusinek Jr Stanley Energy saving fireplace
USD248565S (en) * 1977-03-04 1978-07-18 Watson Covington B Combined heat exchanger and fireplace grate or the like
US4129113A (en) * 1977-03-30 1978-12-12 Thermograte, Inc. Combination glass door and heat-exchanging grate for fireplaces
US4163442A (en) * 1977-10-17 1979-08-07 Welty Robert O Fireplace heat system
US4195778A (en) * 1977-11-15 1980-04-01 Hyten Jesse G Auxiliary air heater for fireplaces
US4175539A (en) * 1978-01-30 1979-11-27 Fireplace Energy Inc. Fireplace heater and home pressurization system
US4219005A (en) * 1978-03-06 1980-08-26 Alfred Boahn Fireplace heating unit
US4213443A (en) * 1978-03-13 1980-07-22 All Nighter Stove Works, Inc. Stove construction
US4197829A (en) * 1978-06-29 1980-04-15 Heatco, Inc. Heat exchanger for use in fireplace
US4204519A (en) * 1978-07-24 1980-05-27 Towery Mark W Forced hot air fireplace attachment
US4320740A (en) * 1978-12-22 1982-03-23 Lassy Carl O Fireplace heater with reflector, heat retainer, forced draft and grate
US4254757A (en) * 1979-07-24 1981-03-10 Charles Emmendorfer Fireplace heat generating system
USRE30725E (en) * 1980-02-26 1981-09-01 Fireplace grate
FR2478271A1 (en) * 1980-03-12 1981-09-18 Faure Rene Michel Heat recuperator for open fireplace - comprises grid of open ended tubes carrying burning logs and circulating heated air into room
EP0038000A2 (en) * 1980-04-14 1981-10-21 von Arx, Paul Heating insert for fireplace
EP0038000A3 (en) * 1980-04-14 1981-12-30 von Arx, Paul Heating insert for fireplace
US4414957A (en) * 1982-03-17 1983-11-15 Ting Enterprises, Inc. Fireplace and stove apparatus
US5934270A (en) * 1997-01-30 1999-08-10 Kim; Sinil Fireplace heat exchange device
US20060088418A1 (en) * 2002-11-27 2006-04-27 Revcor, Inc. Fan assembly and method
US20050257787A1 (en) * 2004-05-18 2005-11-24 Dolton Edward G Iii Fireplace heat recovery system
US7354244B2 (en) 2004-09-01 2008-04-08 Aos Holding Company Blower and method of conveying fluids
US20160054005A1 (en) * 2014-08-21 2016-02-25 Ortal - Heating & Air Conditioning Systems Ltd. Heating system including a safety screen
US9835336B2 (en) * 2014-08-21 2017-12-05 Ortal—Heating & Air Conditioning Systems Ltd. Heating system including a safety screen

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