CN1054577A - Gas fired radiant heater for furnace floor - Google Patents
Gas fired radiant heater for furnace floor Download PDFInfo
- Publication number
- CN1054577A CN1054577A CN 91101241 CN91101241A CN1054577A CN 1054577 A CN1054577 A CN 1054577A CN 91101241 CN91101241 CN 91101241 CN 91101241 A CN91101241 A CN 91101241A CN 1054577 A CN1054577 A CN 1054577A
- Authority
- CN
- China
- Prior art keywords
- glass plate
- furnace
- furnace bottom
- burner
- inlet
- 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.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 45
- 239000000446 fuel Substances 0.000 claims abstract description 22
- 239000011521 glass Substances 0.000 claims abstract description 22
- 238000002485 combustion reaction Methods 0.000 claims abstract description 15
- 239000002912 waste gas Substances 0.000 claims description 18
- 239000000758 substrate Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 238000007596 consolidation process Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 239000000567 combustion gas Substances 0.000 claims description 2
- 230000005855 radiation Effects 0.000 abstract description 19
- 239000003570 air Substances 0.000 description 12
- 239000005357 flat glass Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 238000005452 bending Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000005496 tempering Methods 0.000 description 4
- 235000009508 confectionery Nutrition 0.000 description 2
- 239000006063 cullet Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000005267 amalgamation Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B29/00—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins
- C03B29/04—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way
- C03B29/06—Reheating glass products for softening or fusing their surfaces; Fire-polishing; Fusing of margins in a continuous way with horizontal displacement of the products
- C03B29/08—Glass sheets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
- F23C3/002—Combustion apparatus characterised by the shape of the combustion chamber the chamber having an elongated tubular form, e.g. for a radiant tube
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
- F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
- F27B9/068—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated heated by radiant tubes, the tube being heated by a hot medium, e.g. hot gases
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Tunnel Furnaces (AREA)
- Combustion Of Fluid Fuel (AREA)
Abstract
The invention discloses a kind of radiation heater (12) that glass plate heating furnace (10) go up to use that is used for, this well heater comprises the base plate (40) that horizontally extending heat tunnel (28) are arranged on it and is located at cover plate (42) on the base plate (40) movably.Horizontal flame burner (30) provides horizontal flame with heating radiation heater (12) and stove (10) in heat tunnel (28), and burner (30) comprises combustion air and fuel inlet (54).A vertical middle portion (56) upwards reaches in the furnace bottom (22) from inlet (54), and the outlet of a horizontal extension (56) reaches from the upper end of this vertical middle portion between upper and lower surface in the horizontally extending heat tunnel (28).The horizontal flame that produces in the heat tunnel (28) has heated stove (10).
Description
The present invention relates on the roller forwarder, glass be carried out the glass plate heating furnace for the treatment of processess such as tempering, bending, bending and tempering.
Traditional glass plate heating furnace comprises a roller forwarder, and sheet glass is heated processing during by a heating chamber that links with the direction of basic horizontal on forwarder.The heat request that adds has to a certain degree been satisfied in upper and lower two surfaces and the convection current of hot gas in the heating chamber of the sheet glass that is transferred, and the heat conduction between the every sheet glass on roller that is heated on the forwarder and the forwarder also provides a part of heat.In addition, the preferred construction of this stove is the upper and lower settings resistance element at the forwarder roller, and like this, the upper and lower surface of sheet glass is subjected to radiation heating simultaneously.
Preferably as quickly as possible sheet glass is heated to and handles required temperature, can shorten the length of stove like this, reduce thermosteresis simultaneously, so that make its deflection as far as possible little during heating.Use resistance element just to need the input lot of energy, so that the furnace rising, and need its temperature is further risen.Simultaneously, in case reached preset temperature, still need to import very high energy for keeping this temperature.
The purpose of this invention is to provide a kind of glass plate heating furnace, this stove utilizes Sweet natural gas to heat.
Another object of the present invention provides a kind of radiant heat source by flammable Sweet natural gas heating in the stove.
A further object of the invention provides a kind of burner, and this burner can form the horizontal flame of heating radiant heat source.
For finishing above-mentioned and other purpose, glass plate heating furnace of the present invention is provided with shell and furnace bottom that is positioned at the end portion of heating chamber of a heating chamber, and furnace bottom has one towards last upper surface and prone lower surface towards heating chamber.Furnace bottom has the heat tunnel of a horizontal stretching, and this passage is positioned at a certain position between the furnace bottom surface up and down.Burner produces horizontal flame in passage, thereby also to heat this stove at the bottom of the process furnace.
In one embodiment of the invention, passage generally is a U-shaped, and an inlet and a waste gas outlet are arranged, and the U-shaped passage extends between inlet and waste gas outlet.
In a preferred embodiment of the invention, it is three bifid that passage is essentially, and it has a central branch road and two side branch roads.In the structure of a preferred embodiment, the opening on the central branch road is inlet, and the opening on the side branch road is a waste gas outlet.
In the another kind of structure of the preferred embodiments of the present invention, the perforate on the central branch road is a waste gas outlet, and the perforate on the side branch road is inlet.
In the preferred embodiments of the present invention, furnace bottom is made of stupalith.Wherein furnace bottom is the amalgamation structure, and it comprises the substrate that is provided with heat tunnel and as the cover plate of furnace bottom upper surface, heat tunnel is on the furnace bottom lower surface.Cover plate is installed on the substrate movably.Cover plate is preferably made by the consolidation carbofrax material.
Furnace bottom as the heating chamber end portion preferably is made of many radiation heaters.Two radiation heaters preferably make their that end opposite with the waste gas end be close to mutually, thereby form Heater group.Wherein, the waste gas outlet end is to become vertical arrangement in the distally and for process furnace.
Furtherly, radiation heater comprises a guiding groove that communicates with waste gas outlet, so that direct exhaust upwards flows.A plurality of Heater group laterally are placed in the process furnace each other, thereby have constituted the furnace bottom of stove, and combustion exhaust wherein forms the waste gas curtain of extends perpendicular at a certain end of Heater group.
Provide the burner of horizontal flame to comprise combustion air and fuel inlet, they are positioned at the below of furnace bottom lower surface.Burner also has one to extend into the horizontally extending outlet that vertical middle portion and in the furnace bottom constitutes the mixing and burning chamber from inlet, and combustion air and fuel mix therein, light and form the flame of horizontal extension.Burner and heat tunnel link, and therefore, flame just is introduced in the heat tunnel, thereby have heated stove.
Provide first pipe of combustion air to have inlet, vertical middle portion and horizontally extending outlet.Distal end portion in order to the horizontal stretching that fuel is provided is provided in the outlet of the horizontal stretching that second pipe of fuel is included in burner.There is the cup-shaped mixing tank in first aperture to be arranged on the distal end portion of second pipe and measures the flow of combustion air.Distal end portion comprises second aperture of metering fuel flow, like this, just can light above-mentioned fuel and make it produce horizontal flame, so that heat below furnace bottom.
The size in first aperture and second aperture preferably is decided to be in air-fuel ratio to be moved under the situation of the excess air of the stoichiometric ratio to 500% of fuel fabrication.Make these holes by certain size, make its opening ratio when operation reach 20 to 1.Make moderate change in second hole of distal end portion and just can use various geseous fuel.
In the other layout of burner, second pipe comprise substantially vertically the first part passed in the middle portion of first pipe and that communicate with it and that extend from this first part's substantial horizontal and in distal end portion the terminated second section.
These purposes of the present invention, feature and advantage are below with reference to seeing clearlyer in the detailed description of accompanying drawing to best mode work of the present invention.
Fig. 1 is a side section sketch map of glass plate heating furnace, and this stove combines use with gas-fired radiation process furnace and horizontal flame burner of the present invention.
Fig. 2 is the broken section skeleton view of a glass plate heating furnace, has represented gas-fired radiation well heater and horizontal flame burner among the figure.
Fig. 3 is the orthographic plan of expression one row's radiation heater.
Fig. 4 is the sectional elevation of getting along the 4-4 line along among Fig. 3, the heat tunnel of expression radiation heater among the figure.
Fig. 5 is the sectional elevation of getting along the 5-5 line among Fig. 3, this passage of expression and horizontal flame burner among the figure.
Fig. 6 is the skeleton view of burner of the present invention.
Fig. 7 is the sectional elevation of the burner of Fig. 6.
Fig. 8 is the part sectional elevation, the figure shows the relation between horizontal flame burner and the radiation heater.
Fig. 9 is the sectional elevation of another embodiment of burner of the present invention.
With reference now to Fig. 1,, the glass plate heating furnace shown in the figure all uses label 10 to represent, this process furnace is used for processing such as tempering, bending, bending and tempering are carried out in sheet glass G heating.Glass plate heating furnace 10 comprises gas-fired radiation well heater 12 of the present invention.Replace traditional resistance element well heater can conserve energy with the gas-fired radiation well heater 12 that below will be described in detail, make stove have better adaptability.
Stove 10 illustrated in figures 1 and 2 comprises a shell 14, and it defines a closed heating 16 basically, and in heating chamber, sheet glass G is heated to the suitable temp of handling in order to further.The roller forwarder 18 of stove 10 has horizontally extending roller 20, and pending sheet glass G passes through heating chamber 16 under the transmission of roller, thereby makes sheet glass be heated to the temperature of needed processing from room temperature in heating chamber.The glass cullet forwarder 21 that is positioned at roller forwarder 18 belows is used to carry the glass cullet of heating chamber 16.
Further Fig. 2 in reference to the accompanying drawings, passage 28 is three fork-shapeds substantially, wherein has one to be central branch road 32 and two side branch roads 34.Being used for the described passage of UNICOM and making horizontal flame be introduced into the interior inlet 36 of this path, is an opening that is positioned at central branch road 32.The exhaust outlet 38 that waste gas after burning is discharged is the opening that is positioned on the branch road 34.In contrast, outlet port 38 also can be used as combustion gases inlets and enters the mouth and 36 also can make the waste gas relief outlet.In a kind of layout in back, the efficient of burner slightly descends.
Fig. 3 in the accompanying drawing represents the preferred structure of furnace bottom 22, in a row be provided with many radiation heaters 12 on the furnace bottom, and these well heaters has constituted furnace bottom 22.In this diagram, the cover plate 42 of each radiation heater 12 all is removed, and the structure of passage 28 is just very obvious like this.As shown in the figure, each passage 28 is three bifid basically.
In a preferred embodiment, install mutually adjacent to each other another termination 46 opposite with exhaust side 48 of two radiation heaters, so just forms a Heater group 50.Waste gas end 48 thereby at distal end portion, and process furnace 10 becomes vertically relatively.Guiding groove 52 on the branch road 34 of passage 28 makes upwards discharging of waste gas.A plurality of Heater group laterally are installed on the process furnace 10 each other.Thereby this structure of well heater 50 lines up waste gas guiding groove 52 laterally to be striden across stove 10 and has formed the waste gas air curtain that twice are crossed stove 10.These waste gas curtains when stove loading, unloading sheet glass G as a kind of barrier that stops that ambient air is invaded.
The section of preferred radiation heater 12 in Fig. 4 and Fig. 5 presentation graphs 3.Fig. 4 represents to be installed in the cover plate 42 on the substrate 40 and the shape of passage 28.Fig. 5 represents burner 30, and this burner is installed on the substrate 40.Also show the formation of the central branch road 32 interior horizontal flame of passage 28 among the figure.
With reference to figure 6 to Fig. 9, burner 30 comprises combustion air and the fuel inlet 54 that is positioned at furnace bottom lower surface 26 belows, also have one 54 to extend upward into the vertical middle portion of furnace bottom 22 and form the horizontally extending outlet 58 of mixing and burning chamber from entering the mouth, combustion air and fuel mix in mixing section and light, and form horizontal-extending flame in heat tunnel 28.This horizontal flame heating radiation heater 12 and stove 10.
Fig. 6 and Fig. 7 represent an embodiment of burner 30.In this embodiment, first pipe 60 that is used to supply with combustion air has the horizontally extending outlet 58 of inlet 54, vertical middle portion 56 and burner 30.Second pipe 62 of fueling is included in the far-end that is used for transfer the fuel 64 that flatly stretches in the horizontal-extending outlet 58 of burner 30.The mixing tank 66 that is provided with on second pipe, 62 the far-end 64 makes air and fuel mix, puts burning mixt then and comes at the bottom of the process furnace passage 28 inside under 22 the upper surface to produce horizontal flame.
Another burner 30 ' embodiment in (as shown in Figure 9), second pipe 62 ' comprise substantially perpendicularly first part 68 by first pipe, 60 ' center ' and communicate with it and basically from first part's horizontal-extending and end at the second section 70 of far-end 64 ' interior '.
Done detailed description to finishing best mode of the present invention above, and to involved in the present invention to the personnel that are familiar with of technical field will recognize that, in the determined scope of claim of the present invention, also can select alternate manner to implement the present invention.
Claims (10)
1, a kind of glass plate heating furnace, it comprises a basic shell that surrounds heating chamber and a furnace bottom is arranged, furnace bottom is the end portion of heating chamber, described furnace bottom comprises and facing up and towards the upper surface and the ventricumbent lower surface of heating chamber, described furnace bottom also is included in, the heat tunnel that a certain position along continuous straight runs between lower surface extends; A burner that provides horizontal flame to heat stove in described also is provided.
2, according to the glass plate heating furnace of claim 1, it is characterized in that described passage is U-shaped basically, it has the entrance and exit in furnace bottom, and the U-shaped passage is located between the entrance and exit.
3, according to the glass plate heating furnace of claim 1, it is characterized in that described passage is three bifid, a central branch road and two side branch roads are wherein arranged: every branch road all has an opening at its distal end portion.
4, according to the glass plate heating furnace of claim 3, the opening that it is characterized in that central branch road is that inlet and horizontal flame are introduced in the passage by this inlet, and the opening on the side branch road is a waste gas outlet, and combustion gases are discharged from this outlet.
5, according to the glass plate heating furnace of claim 3, it is characterized in that the opening on the side branch road is that inlet and horizontal flame are introduced in the passage that communicates with it by this inlet, and the opening on the central branch road is a waste gas outlet, waste gas is discharged from this mouth.
6,, it is characterized in that described furnace bottom uses ceramic material according to the glass plate heating furnace of claim 1.
7, according to the glass plate heating furnace of claim 6, it is characterized in that described furnace bottom is a two-piece construction, it comprises a substrate and a cover plate, this substrate comprises the described passage on the lower surface, and cover plate comprises upper surface and covers movably on described base plate.
8,, it is characterized in that described cover plate made by the consolidation carbofrax material according to the glass plate heating furnace of claim 7.
9, according to the glass plate heating furnace of claim 1, it is characterized in that described burner comprises combustion air and the fuel inlet that is positioned at furnace bottom lower surface below, this burner also comprises from described inlet and extends up to vertical middle portion in the furnace bottom, constitutes the horizontally extending outlet of mixing and burning chamber, combustion air and fuel mix in the mixing and burning chamber, light, and in described heat tunnel, produce the flame of horizontal extension, thereby heated described stove.
10,, it is characterized in that described burner comprises according to the glass plate heating furnace of claim 9:
Supply with first pipe of combustion air, it has inlet, vertical middle portion and horizontally extending outlet;
Second pipe of fueling, it has the distal end portion that flatly extends in the horizontally extending outlet of burner, in order to fuel to be provided;
Be arranged on the distal end portion of described second pipe with so that the mixing tank of combustion air and fuel mix, so said mixture can be lighted and be created under the furnace bottom upper surface horizontal flame in order to heating.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/474,547 US5022911A (en) | 1990-02-02 | 1990-02-02 | Gas fired radiant heater for furnace floor |
| US474,548 | 1990-02-02 | ||
| US07/474,548 US5032163A (en) | 1990-02-02 | 1990-02-02 | Horizontal flame burner for furnace floor radiant heater |
| US474,547 | 1990-02-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1054577A true CN1054577A (en) | 1991-09-18 |
Family
ID=27044502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91101241 Pending CN1054577A (en) | 1990-02-02 | 1991-02-02 | Gas fired radiant heater for furnace floor |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN1054577A (en) |
| AU (1) | AU7258391A (en) |
| WO (1) | WO1991011397A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005118494A1 (en) * | 2004-06-03 | 2005-12-15 | Yan Zhao | Glass sheet heating furnace |
| CN105026864A (en) * | 2013-03-08 | 2015-11-04 | 株式会社Ihi | Continuous heating furnace |
| CN105043095A (en) * | 2015-06-25 | 2015-11-11 | 石家庄新华能源环保科技股份有限公司 | Double-heating rotary hearth ring furnace |
| TWI548840B (en) * | 2011-09-28 | 2016-09-11 | 中外爐工業股份有限公司 | Wall surface heat radiation type burner unit |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1246032B (en) * | 1991-03-08 | 1994-11-07 | Poppi Spa | HARDENING OVEN, IN PARTICULAR FOR GLASS AND SIMILAR SHEETS. |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US355568A (en) * | 1887-01-04 | simpeins | ||
| US346621A (en) * | 1886-08-03 | simpkins | ||
| US419369A (en) * | 1890-01-14 | Baker s oven | ||
| US1588603A (en) * | 1925-08-27 | 1926-06-15 | Hartford Empire Co | Apparatus for annealing glassware |
| US1630162A (en) * | 1926-11-05 | 1927-05-24 | Joseph Trefney | Furnace |
| US2105004A (en) * | 1933-08-16 | 1938-01-11 | Mortenson John | Furnace |
| US2086504A (en) * | 1936-03-05 | 1937-07-06 | Norton Co | Muffle plate |
| US2151983A (en) * | 1937-02-17 | 1939-03-28 | Hartford Empire Co | Method of and apparatus for decorating and annealing glassware |
| US3579983A (en) * | 1969-05-05 | 1971-05-25 | Snecma | Improvements in or relating to combustion chambers |
| US3816061A (en) * | 1972-12-04 | 1974-06-11 | C Guth | Fuel mixing chamber for heating torches |
| US4389848A (en) * | 1981-01-12 | 1983-06-28 | United Technologies Corporation | Burner construction for gas turbines |
-
1991
- 1991-01-23 WO PCT/US1991/000456 patent/WO1991011397A1/en unknown
- 1991-01-23 AU AU72583/91A patent/AU7258391A/en not_active Abandoned
- 1991-02-02 CN CN 91101241 patent/CN1054577A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005118494A1 (en) * | 2004-06-03 | 2005-12-15 | Yan Zhao | Glass sheet heating furnace |
| TWI548840B (en) * | 2011-09-28 | 2016-09-11 | 中外爐工業股份有限公司 | Wall surface heat radiation type burner unit |
| CN105026864A (en) * | 2013-03-08 | 2015-11-04 | 株式会社Ihi | Continuous heating furnace |
| CN105026864B (en) * | 2013-03-08 | 2016-11-23 | 株式会社Ihi | Continuous furnace |
| US9689613B2 (en) | 2013-03-08 | 2017-06-27 | Ihi Corporation | Continuous heating furnace |
| CN105043095A (en) * | 2015-06-25 | 2015-11-11 | 石家庄新华能源环保科技股份有限公司 | Double-heating rotary hearth ring furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| AU7258391A (en) | 1991-08-21 |
| WO1991011397A1 (en) | 1991-08-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |