US1889928A - Furnace - Google Patents

Furnace Download PDF

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Publication number
US1889928A
US1889928A US364477A US36447729A US1889928A US 1889928 A US1889928 A US 1889928A US 364477 A US364477 A US 364477A US 36447729 A US36447729 A US 36447729A US 1889928 A US1889928 A US 1889928A
Authority
US
United States
Prior art keywords
furnace
ware
chamber
preheating
burning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US364477A
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English (en)
Inventor
Leo W Manion
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vibrantz Corp
Original Assignee
Ferro Enamel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ferro Enamel Corp filed Critical Ferro Enamel Corp
Priority to US364477A priority Critical patent/US1889928A/en
Priority to BE370399D priority patent/BE370399A/fr
Priority to GB15338/30A priority patent/GB353976A/en
Priority to FR696504D priority patent/FR696504A/fr
Application granted granted Critical
Publication of US1889928A publication Critical patent/US1889928A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
    • C23D9/00—Ovens specially adapted for firing enamels
    • C23D9/04—Non-electric tunnel ovens

Definitions

  • This invention relates to furnaces and more particularly to a U orhairpin type furnace which is adapted for such use asburning enamel ware.
  • Another object is to provide a continuous furnace of the U orhairpintype,inwhich Ware is moved in a burning chamber and carried through an arc of 180.A and then moved out of the burning chamber.
  • Another object is to direct the path of the products of combustion away from the burning chamber but adjacent the unburned Ware to preheat the unburned Ware.
  • a further object includes providing a furnace having a closed end wherein circulation of air is reduced to a minimum thereby conserving heat.
  • a further object is to conserve heat by providing shoe plates and other means for a continuous sliding cover for the slotted opening through which the Ware supporting parts extend.
  • Other objects include supporting the ware on points and convenient carriers which facilitate burning and handling.
  • a still further object is to provide pivotal connections in the ware carrying mechanism which will permit the ware to be continuously supported on upwardly directed supports and while permitting angular movement between various parts of the carrying mechanism. p.
  • Fig. 1 is a side elevation of my furnace along with ware conveying 1929. Serial N0. 364,477.
  • Fig. 2 is a 'horizontal section taken along the lines2-2 of Fig. 1;
  • Fig. 3 is a vertical section taken alongv the lines 3 3 of Fig. 2;
  • Fig. 4 is a front elevation of the furnace;
  • Figs. 5.and 6 are vertical sections taken along the lines 5-5 and 6--6'respectlvely of Fig. 2;
  • Fig. 7 is an enlarged side ele-l vation taken at the front of the furnace showingvthe conveying structure and shoe plate guides;
  • Fig. 8 is a perspective of one of the shoe plates.
  • a furnace 1 which may be constructed of suitable materials such as fire brick and the like according to well known precepts.
  • the furnace comprises essentially a burning chamber ⁇ 2 and a preheating and cooling chamber 3.
  • Suitable ports or doors 4 and 5 being only large enough to receive Ware with appropriate carriage, are provided at the front end of the furnace, the back end of the furnace being closed.
  • a conveying system is illustrated forv carrying-the Ware into and out of the furnace and comprises essentially a continuous, suitably supported, trackway 10 carrying trolleys 11 from which are-suspended ware carrying and transporting means.
  • the conveying system also comprises an endless chain 12 of which certain links, see Fig. 7, are pivotally sus-- pended from the trolleys and in turn pivotally support trunnions 13 by which the ware is moved int-o and out of the furnace.
  • the trunnions are engaged in split bearings 14 which in turn pivotally support hanger rods 15 through pins 16 whereby a swinging movement is permitted between the trunnions and the hanger rods.
  • the lower ends ofthe -rods 15 have eyes 17 for pivotally receiving work engaging tools 18, see Figs. 1 and/1, or work carrying trays 19 as shown in Figs. 3 and 5.
  • the tools 18 have pointed ends for directly supporting certain shapes of ware, and the trays 19 have point supports for such articles as pots and pans as shown.
  • the pivotal connection between the trolleys, links, trunnions, rods and tools permit various parts to be angularly displaced While the tools and trays keepY a constant position relative to the Ware. hereby the pointed supports which enga e the ware ang vertical.
  • Carried andsupported bycollars 20 on the hanger rods is a continuous articulated shield 21 which com rises shoe plates, see Fi 8,
  • the shoe plates 22 are stepped an amount substantially equal to their thicki ness and havev round holes in their forward) ends engaging hanger rods by which they are drawn, and have elongated holes in their rearward ends to facilitate their turning.
  • the track 23 comprises a pair ofangle bars which overhang the front of the furnace and are declined to slidably receive the shoe plates. The bars constituting the track lie on opposite sides of a continuous U-shaped slotA 24 through which the rods 15 extend and progress through the furnace.
  • the chain 12 passes over horizontally disposed sprocket wheels at opposite ends of its travel located at the extreme left and right of Fig. 1.
  • vAt least one of lthese sprocket wheels is driven by suitable means, not shown, thereby moving the ware through the furnace.
  • K at the front end of the furnace near the doors 4 and 5, the unburned ware entering through the door 5 and progressing through the pre.- heating and cooling chamber to the burning chamber, whence it is carried through an arc 0f 180 and returned through the preheating and cooling chamber out of the door 4 where it is unloaded.
  • I provide a plurality of burners 29 which are directed Yalternately and oppositely under the floor of the burning chamber 2.' The burners project into combustion chambers 30, the tops 0f which are covered with high refractory material preferably laid asA inverted Vs to ⁇ give a maximum surface for radiation and conduction.
  • The-ends of the chambers 30 ar deviation of the other parts from the
  • the ware is loaded andunloaded opposite the burners ⁇ communicate freely with'chambers 31 which constitute the side walls of the burning chamber and are interiorl lined with high refractory material throug which heat is transmitted to the ware.
  • the flame and products of combustion from the burners pass under the ioor of the burning chamber and along the side walls, out of. contact with the ware which moves through the chamber.
  • the refractory lining of the bottom and sides of the burning is, infact, the part from which heat emanates and iiows to the'ware, and -if electrical heating" elements were similarly disposed, the effect within the burning chamber would be substantially the same.
  • the selection of theheating means may hinge upon the cost of power and fuel in various localities.
  • One ofthe advantagesin using a ⁇ combustible fuel' is that the products of combustion may be used after they leave the vicinity of the burning chamber to preheat A the ware duringits inward passage through the preheating and cooling chamber.
  • Communicating with the uppr portions ofthe chambers 31, l provide exhaust openings 32and 33 through which the products of combustion pass downwardly and then laterally partlythrough the passage 34 and into a longitudinally extending passage 35 (seev Figs. 2 and 5) which extends under the iioor of the side of the preheating and cooling chamber over which t e incoming ware passes.
  • the passage 35 may conveniently terminate in a stack 36 adjacent the door of .the furnace.
  • the incoming ware enters the port or door 5 and is carried along above the passage 35 and laterally adjacent the hot burned ware which 'leaves the fur-4 nace by the door 4.
  • the incoming ware is thus preheated both by its proximlty to the roductsof combustion and also by its proxi the burning chamber and itl is my intention.
  • the preheating and cooling chamber is about twice as'long as the burning chamber, although variations in the relative lengths of the chambers may be found advisable according to the character of the duty imposed upon the furnace.
  • said furnace having a roof provided with a continuous U-shaped opening for receiving said supporting members, and means for' preventing the escape of heat through sald continuous opening, said last named means comprising overlapping plates engaged by said supporting members and slida le along the furnace roof, said plates being solely sup.- ported by -said roof while over the furnace and by said supporting members when away from the furnace.
  • Affurnace comprising a reheating and cooling chamber, a burning c amber located at one end of said preheating and cooling chamber, means substantially covering the walls and floor of said burning chamber whence heatemanates into said chamber,
  • a U type furnace having a burning chamber heated by combustible fuel, a preheating and cooling chamber through which Aburned and-'unburned ware are conveyedin close proximity in opposite directions whereby the unburned ware is preheated by the burned ware, and means for conduct-in the products of combustion through the pre eat- 5.
  • the method of burning ware which consists in conveying a contmuously .moving stream of ware through an enclosed chamber, turning the stream of ware through -an arc on from the burning chamber subof 180, burning a combustible fuel at or near the point of turning and directing the heat ltherefrom onto the ware at that point to burn it, conveying the ware from the point of turning back in a direction opposite to the movement of the unburned ware and in close proximity thereto, whereby heat flows from the burned to the unburned lware topreheat it and causing the products of combustion to flow in a path parallel the path of the unburned ware and in a direction opposite to the movement thereof and proximate thereto forpreheating the unburned ware.
  • a furnace comprising a preheating and cooling chamber, a burning chamber located at one end of said preheating and cooling chamber, means for heating said burning chamber, means for conveying articles through said preheating and cooling chamber and said burning chamber whereby said articles are conveyed into and from'said preheating and cooling chamber in substantially parcontinuous opening, said covering members including overla ping plates engaged by said supporting mem ers and slidable along the furnace roof, said supporting plates being wholly supported bythe furnace roof while over said continuous opening and by said supporting members while away from said continuous opening.
  • said last name means comprising overlapping plates enga ed by said supporting members and slida 1e along the furnace roof, said plates being solel supported by said roof while o'tfer said lishaped opening in said furnace and by said supporting members when away from said furnace.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Tunnel Furnaces (AREA)
  • Baking, Grill, Roasting (AREA)
US364477A 1929-05-20 1929-05-20 Furnace Expired - Lifetime US1889928A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US364477A US1889928A (en) 1929-05-20 1929-05-20 Furnace
BE370399D BE370399A (enrdf_load_stackoverflow) 1929-05-20 1930-05-19
GB15338/30A GB353976A (en) 1929-05-20 1930-05-19 Improvements in and relating to furnaces in particular for burning enamel ware
FR696504D FR696504A (fr) 1929-05-20 1930-05-20 Procédé et four, en particulier, pour la cuisson de produits et plus spécialement de produits émaillés

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US364477A US1889928A (en) 1929-05-20 1929-05-20 Furnace

Publications (1)

Publication Number Publication Date
US1889928A true US1889928A (en) 1932-12-06

Family

ID=23434694

Family Applications (1)

Application Number Title Priority Date Filing Date
US364477A Expired - Lifetime US1889928A (en) 1929-05-20 1929-05-20 Furnace

Country Status (4)

Country Link
US (1) US1889928A (enrdf_load_stackoverflow)
BE (1) BE370399A (enrdf_load_stackoverflow)
FR (1) FR696504A (enrdf_load_stackoverflow)
GB (1) GB353976A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2530595A (en) * 1947-08-27 1950-11-21 Selas Corp Of America Tile furnace
US2608740A (en) * 1950-07-26 1952-09-02 Ferro Corp Continuous furnace
US20080286718A1 (en) * 2005-04-13 2008-11-20 Ruediger Franke Device and Process For Dimensionally Stable Sintering of Ceramic Pre-Shaped Articles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2530595A (en) * 1947-08-27 1950-11-21 Selas Corp Of America Tile furnace
US2608740A (en) * 1950-07-26 1952-09-02 Ferro Corp Continuous furnace
US20080286718A1 (en) * 2005-04-13 2008-11-20 Ruediger Franke Device and Process For Dimensionally Stable Sintering of Ceramic Pre-Shaped Articles
US8119058B2 (en) * 2005-04-13 2012-02-21 3M Innovative Properties Company Device and process for dimensionally stable sintering of ceramic pre-shaped articles

Also Published As

Publication number Publication date
GB353976A (en) 1931-08-06
FR696504A (fr) 1930-12-31
BE370399A (enrdf_load_stackoverflow) 1930-08-30

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