US1712699A - Hot-air furnace - Google Patents

Hot-air furnace Download PDF

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Publication number
US1712699A
US1712699A US198788A US19878827A US1712699A US 1712699 A US1712699 A US 1712699A US 198788 A US198788 A US 198788A US 19878827 A US19878827 A US 19878827A US 1712699 A US1712699 A US 1712699A
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United States
Prior art keywords
furnace
plates
fire pot
hot
air furnace
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Expired - Lifetime
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US198788A
Inventor
John J Grefenstette
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Individual
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Priority to US198788A priority Critical patent/US1712699A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0052—Details for air heaters

Definitions

  • the present invention is directed to improvements in hot air furnaces.
  • the primary object of the invention is to provide a furnace wherein a series of bafiie plates are mounted in vertical spaced relation in the fire pot thereof in order that the heat from the burner will be directed against the inner surface of the fire pot wall to cf fectively heat the same, whereby the fresh air will bethoroughly heated.
  • Another object of theinvention is to pro vide battle plates so constructed that they can be conveniently placed in the fire pot of a furnace already installed as an attachment therefor.
  • Figure 1 is a vertical, sectional view through a furnace, showing the battle plates in the fire pot thereof.
  • Figure 2 asectional view on line 2-2 of Figure l.
  • Figure 3 is a transverse sectional view through a pot, showing a modified form of support for the baffle plates.
  • Figure is a sectional view on line dl of Figure 3.
  • 1 designates the outer casing and 2 an inner casing, which, in the type of furnace shown, provides a fresh air inlet space 3 which communicates with the space 4- defined by the wall of the fire pot 5and the hood 6. It will be obvious that the fresh air passing through the space 4: will be subjected to heat'radiating from the wall of the fire pot.
  • the fire pot is of a conventional type and into which is directed the heat generated by the gas burner 7.
  • baflle plates 8 are pro vided, the peripheries of which are spaced from the fire pot wall to permit passage of the flame and heat.
  • the baffle plates are formed from a plurality of semi-circular sections 9 and 10, in order that they may be conveniently passed through the door opening, not shown,
  • Each section is provided with a pair of openings 11 for reception of the tie rods 12, four of which are used.
  • the lower ends of the tie rods engage upon the upper ends of the pedestals 13, the lower ends of said pedestals resting upon the foundation 14.
  • Spacing sleeves 153 are engaged upon the rods between the baffle plates and serve to maintain the battle plates in vertical spaced relation, the lowermost baffle plate being engaged upon the collars 16 of the pedestals.
  • the sections 9 and 10 after being engaged upon the rods 12 have their straight sides retained thus by clan'iping bolts 17.
  • the uppermost baliie plate is connected with the adjacent baffle plate by relatively short tie rods 18, and maintained spaced therefrom by sleeves 19.
  • the fire pot is shown equipped with a pair of lugs 20 which support baffle plates 21 which are also formed from sections 22 and 23, the sections 23 being hingedly connected to the fire pot wall, as at 24-. These sections are also connected in overlapped. relation by clamping bolts 25 and are used in connection with fire boxes especially equipped for the installation of the bail-1e plates by the provision of the lugs 20.
  • bafiie plates located coaxially with the walls of the fire pot, each bave plate consisting of a pair of sections having their inner edges overlapped, means for securing the overlapped edges, tie rods passing through the sections and having their lower ends resting upon the pedestals, and sleeves engaged upon the tie rods and disposed between the baflie plates, the lowermost bafiie plate resting upon said collars as and for the purpose set forth.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Baking, Grill, Roasting (AREA)

Description

May 14, 1929.
J. J. GREFENSTETTE now AIR mumps 2 Sheets-Shed Filed 'June 1 192'? y 14, 1929- J. J. GREFENSTETTE 1.712.699
HOfI' AIR FURNACE Filed June 14, 1927 ZSheets-Sheet 2 gmxmtoc JJ a a/( 2225522558.
IIIIIIIIIII.
Patented May 14, 1929.,
UNITED STATES JOHN J. GREFENSTET'I'E, 0F TOLEDO, OHIO.
HOT AIR, FURNACE.
Application filed June 14,
The present invention. is directed to improvements in hot air furnaces.
The primary object of the invention is to provide a furnace wherein a series of bafiie plates are mounted in vertical spaced relation in the fire pot thereof in order that the heat from the burner will be directed against the inner surface of the fire pot wall to cf fectively heat the same, whereby the fresh air will bethoroughly heated.
Another object of theinvention is to pro vide battle plates so constructed that they can be conveniently placed in the fire pot of a furnace already installed as an attachment therefor.
In the accompanying drawings:
Figure 1 is a vertical, sectional view through a furnace, showing the battle plates in the fire pot thereof.
Figure 2 asectional view on line 2-2 of Figure l.
Figure 3 is a transverse sectional view through a pot, showing a modified form of support for the baffle plates.
Figure is a sectional view on line dl of Figure 3.
Referring to the drawings, 1 designates the outer casing and 2 an inner casing, which, in the type of furnace shown, provides a fresh air inlet space 3 which communicates with the space 4- defined by the wall of the lire pot 5and the hood 6. It will be obvious that the fresh air passing through the space 4: will be subjected to heat'radiating from the wall of the fire pot. v
The fire pot is of a conventional type and into which is directed the heat generated by the gas burner 7.
In order that the flame and heat from the burner will be directed against the inner surface of the fire pot 5 to effectively heat the same a plurality of baflle plates 8 are pro vided, the peripheries of which are spaced from the fire pot wall to permit passage of the flame and heat.
The baffle plates are formed from a plurality of semi-circular sections 9 and 10, in order that they may be conveniently passed through the door opening, not shown,
, disposed in overlapped relation anc 1927. Serial No. 198,788.
of the furnace, in order be installed in a furnace already in use. Each section is provided with a pair of openings 11 for reception of the tie rods 12, four of which are used. The lower ends of the tie rods engage upon the upper ends of the pedestals 13, the lower ends of said pedestals resting upon the foundation 14. Spacing sleeves 153 are engaged upon the rods between the baffle plates and serve to maintain the battle plates in vertical spaced relation, the lowermost baffle plate being engaged upon the collars 16 of the pedestals. The sections 9 and 10 after being engaged upon the rods 12 have their straight sides retained thus by clan'iping bolts 17. The uppermost baliie plate is connected with the adjacent baffle plate by relatively short tie rods 18, and maintained spaced therefrom by sleeves 19.
In Figures 3 and 4, the fire pot is shown equipped with a pair of lugs 20 which support baffle plates 21 which are also formed from sections 22 and 23, the sections 23 being hingedly connected to the fire pot wall, as at 24-. These sections are also connected in overlapped. relation by clamping bolts 25 and are used in connection with lire boxes especially equipped for the installation of the bail-1e plates by the provision of the lugs 20. "Having thus described the invention, I claim The combination with the fire pot of a furnace, of a plurality of pedestals mounted therein and provided with collars, a plurality of vertically spaced inpervious bafiie plates located coaxially with the walls of the lire pot, each baiile plate consisting of a pair of sections having their inner edges overlapped, means for securing the overlapped edges, tie rods passing through the sections and having their lower ends resting upon the pedestals, and sleeves engaged upon the tie rods and disposed between the baflie plates, the lowermost bafiie plate resting upon said collars as and for the purpose set forth.
" In testimonywhereof I aflix my signature.
JOHN J.'GREFENSTETTE. [n s] that they may
US198788A 1927-06-14 1927-06-14 Hot-air furnace Expired - Lifetime US1712699A (en)

Priority Applications (1)

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US198788A US1712699A (en) 1927-06-14 1927-06-14 Hot-air furnace

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US1712699A true US1712699A (en) 1929-05-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3816055A (en) * 1972-06-12 1974-06-11 Lear Motors Corp Reigniter means for power combustors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3816055A (en) * 1972-06-12 1974-06-11 Lear Motors Corp Reigniter means for power combustors

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