CN102690047A - Heating furnace for glass tempering - Google Patents
Heating furnace for glass tempering Download PDFInfo
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- CN102690047A CN102690047A CN2011100740962A CN201110074096A CN102690047A CN 102690047 A CN102690047 A CN 102690047A CN 2011100740962 A CN2011100740962 A CN 2011100740962A CN 201110074096 A CN201110074096 A CN 201110074096A CN 102690047 A CN102690047 A CN 102690047A
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Abstract
The invention provides a heating furnace for glass tempering; a sealed heating space is formed in a furnace body, and is partitioned into an upper space and a lower space by a horizontal roller and glass to be processed on the horizontal roller, wherein the upper and lower spaces are relatively sealed and not communicated with each other; a plurality of upper high temperature blower fans are disposed in the upper space, with air inlets being communicated with the upper space, and air outlets being communicated with an upper main air pipe; the upper main air pipe is communicated with a plurality of upper convection pipes which are disposed above the horizontal roller, are arranged with intervals, and are parallel to each other; a plurality of jet holes are disposed at the lower side of each upper convection pipe with uniform intervals; an upper electric heating element is parallelly disposed between any two adjacent upper convection pipes; and the upper electric heating element is in a same horizontal plane as the upper convection pipes. With the invention, each part of the glass to be processed can be heated rapidly and accurately into a temperature at which glass tempering can be completed.
Description
Technical field
The present invention relates to a kind of process furnace that glass tempering is handled that is used to carry out.
Background technology
The temperature of different sites can independent control in the processing requirement heating stove furnace chamber of glass tempering, just can processed glass various piece be heated to the temperature that glass can be accomplished tempering exactly.
At present, be widely used in glass tempering, particularly the stove of glass heats more efficiently of coated glass tempering all is derived from utility model patent 200920006859.8.The temperature of warm air different sites in stove that this process furnace convection tubes ejects can not independent control; When needing the temperature of different sites in the control stove; Only rely on the temperature of an electric heating element of regulating each independent heating region, realize by the different heats of an electric heating element radiating.Because convection tubes is between an electric heating element and the processed glass; The radiation length of an electric heating element is far away; And the partial radiation heat is blocked by convection tubes, so that the temperature of an electric heating element through regulating each independent heating region is controlled the temperature-controlled process of different sites temperature in the stove is very insensitive.At the big space of a whole page glass of the heating version width of cloth greater than 1m * 1m; Especially during coated glass, the peripheral temperature of glass often is higher than the temperature of middle part, causes each position tempering stress of glass inconsistent; The granularity of middle part does not reach requirement when smashing check, is difficult to satisfied tempering effect.
Summary of the invention
Main purpose of the present invention is, provides a kind of glass tempering to use process furnace, and the radiation length that solves an electric heating element is far away, and the partial radiation heat is accelerated the heat-up rate of processed glass by the problem of convection tubes blocking-up.
Main purpose of the present invention also is; Provide a kind of glass tempering to use process furnace; Temperature control to different sites temperature in the net configuration heated glass annealing furnace stove is insensitive; Processed glass various piece can not be heated to the temperature that glass can be accomplished tempering exactly, and seriously inconsistent, the middle part granularity of each position tempering stress of glass does not reach the defective of requirement behind the especially big space of a whole page glass tempering.
Technical scheme of the present invention is:
A kind of glass tempering is used process furnace; Has a body of heater; Be formed with the heating space of sealing in this body of heater; Be spaced many horizontal rollers on the horizontal plane in the heating space of this body of heater, the glass to be processed that is positioned on this horizontal roller can be divided into disconnected upper space of relative closure and lower space with this heating space; It is characterized in that:
In this upper space, be provided with several top high-temperature blowers; The air intake vent of each top high-temperature blower all is connected with this upper space; The air outlet of each this top high-temperature blower is communicated with a top air main; Each top air main is communicated with many again and is positioned at this horizontal roller top and spaced top convection tubes that is parallel to each other, and every top convection tubes downside evenly is interval with a plurality of fluid orifices;
Between any two adjacent upper convection tubess, be arranged with a top an electric heating element in parallel, described top an electric heating element and described top convection tubes are on the same horizontal plane.
In a preferable technical scheme:
Below this horizontal roller, be provided with several bottom high-temperature blowers; The air intake vent of each bottom high-temperature blower all is connected with this lower space; The air outlet of each bottom high-temperature blower is communicated with a bottom air main; Each bottom air main is communicated with many again and is positioned at this horizontal roller below and spaced bottom convection tubes that is parallel to each other, and every bottom convection tubes upside evenly is interval with a plurality of fluid orifices;
Between any two adjacent bottom convection tubess, be arranged with a bottom an electric heating element in parallel, described bottom an electric heating element and described bottom convection tubes are on the same horizontal plane.
In a preferable technical scheme: each top or bottom high-temperature blower all are close to the inner side-wall setting of this body of heater, and respectively by a drive device drives rotation of being located on the body of heater outer side wall.
In a preferable technical scheme: each top or bottom convection tubes all are to be parallel to the straight tube that this horizontal roller is provided with; The two ends of each top convection tubes respectively be arranged on two sidewalls of body of heater on the top air main be connected, the two ends of each bottom convection tubes respectively be arranged on two sidewalls of body of heater on the bottom air main be connected.
In a preferable technical scheme: several adjacent top an electric heating element are connected in series and constitute a top heating module, and each top heating module is furnished with a by-pass cock and a thermopair.
In a preferable technical scheme: several adjacent top an electric heating element are connected in series and constitute a top heating module; Several adjacent bottom an electric heating element are connected in series and constitute a lower heating module, and each top heating module all is furnished with a by-pass cock and a thermopair with each lower heating module.
In a preferable technical scheme: this top heating module and lower heating module are all rectangular.
In a preferable technical scheme: between each bottom an electric heating element and this horizontal roller, be provided with a protective guard, this protective guard is that transmitance is not less than 30% perforation thin plate.
In a preferable technical scheme: the perforation on this protective guard is that diameter is not more than 9 millimeters circular hole, and each circular hole is evenly arranged by matrix form.
In a preferable technical scheme: the distance between this top convection tubes and this top an electric heating element and the horizontal roller upper surface equals the distance between this bottom convection tubes and this bottom an electric heating element and the horizontal roller upper surface.
In a preferable technical scheme: the distance between this top convection tubes and this top an electric heating element and the horizontal roller upper surface is in 60mm～120mm scope; And the distance between this bottom convection tubes and this bottom an electric heating element and the horizontal roller upper surface is in 130mm～220mm scope.
In a preferable technical scheme: this top convection tubes equates with the quantity of this bottom convection tubes and is over against arranging; Up and down over against two upper and lower part convection tubess between fluid orifice be and be dislocatedly distributed, two top that level is adjacent or the fluid orifice between the convection tubes of bottom also are and are dislocatedly distributed.
Compared with prior art; The beneficial effect that the present invention has is: the present invention has shortened the radiation length between an electric heating element and the processed glass; And do not had the processed glass of blocking of convection tubes to be exposed to fully under the thermal radiation of an electric heating element, the temperature of having strengthened an electric heating element through regulating each independent heating region is controlled the ability of different sites temperature in the stove.Processed glass can be heated to glass very soon can accomplish the temperature of tempering; And the temperature of an electric heating element that can be through regulating respective regions makes each position temperature of processed glass consistent; Can produce the toughened glass of each satisfaction that position stress is consistent, granularity is consistent; That is, can quickly and accurately processed glass various piece be heated to the temperature that glass can be accomplished tempering.
Description of drawings
Fig. 1 is a process furnace transverse sectional view of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 2.
Embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, a kind of glass tempering provided by the invention is used process furnace, and it has a body of heater 2, and this body of heater 2 is formed with the heating space of sealing in (comprising frame and lagging material);
Many horizontal rollers 1 have been spaced on the horizontal plane in the heating space of this body of heater 2, the equal rotational support in the two ends of every horizontal roller 1 both sides outside body of heater 2; In the time of work of the present invention, the different shapes and the area glass 7 to be processed that are positioned on this horizontal roller 1 can be divided into disconnected upper space 21 of relative closure and lower space 22 with this heating space;
In this upper space 21 and lower space 22, be respectively equipped with several top high-temperature blowers 41 and bottom high-temperature blower 42; Each high-temperature blower 41,42 all is close to the sidewall setting of this body of heater 2; And respectively by drive unit 43 (like a phonomoter or oil engine) driven rotary of being located on body of heater 2 outer side walls; The air intake vent 411,421 of each high-temperature blower 41,42 is all towards the central position of the heating space of this body of heater 2, and each air intake vent 411,421 also is connected with lower space 22 with the upper space 21 of this body of heater 2 respectively;
The air outlet 412,422 of each this top and bottom high-temperature blower 41,42 is communicated with top and bottom air main 31,32; And each top and the side of bottom air main 31,32 towards the central position of the heating space of this body of heater 2 are communicated with many tops and bottom convection tubes 61,62, and every top and bottom convection tubes 61,62 evenly are interval with a plurality of fluid orifices 63 towards a side of horizontal roller 1 horizontal plane of living in.
In the time of the present invention's operation, high temperature air (its thermal source is an an electric heating element 51,52, and there is detailed argumentation the back) is sucked by the air intake vent 411,421 of high-temperature blower 41,42 earlier; Air outlet 412,422 from high-temperature blower extrudes again; After getting into air main 31,32, get into again in the convection tubes 61,62, from fluid orifice 63, spray to processed glass 7 upper and lower surfaces on the horizontal roller 1 then; Sucked by the air intake vent 411,421 of high-temperature blower 41,42 once more afterwards, constitute the furnace air recycle system.
And it is emphasized that in the present embodiment that all top convection tubess 61 are on the same horizontal plane, all bottom convection tubess 62 also are on another horizontal plane, thereby can realize the processed glass on the horizontal roller 17 is carried out even heating; And; In the present embodiment; Each top and bottom convection tubes 61,62 all are to be parallel to the straight tube that horizontal roller 1 is provided with; And the two ends of each top convection tubes 61 respectively be arranged on 2 two sidewalls of body of heater on top air main 31 be connected; The two ends of each bottom convection tubes 62 respectively be arranged on 2 two sidewalls of body of heater on bottom air main 32 be connected, the air main 31,32 through both sides pours into high temperature air simultaneously in this convection tubes 61,62, make top and bottom convection tubes 61,62 internal gas pressures more greatly, more stable.
In order to control the Heating temperature of different sites in the heating space flexibly, the present invention also is respectively arranged with a plurality of tops and bottom an electric heating element 51,52 in upper space 21 and lower space 22.In the present embodiment; This top and bottom an electric heating element 51,52 all are strip; And top an electric heating element 51 is arranged with top convection tubes 61 parallel interval; Bottom an electric heating element 51 is arranged with bottom convection tubes 61 parallel interval, makes described top an electric heating element 51 and described top convection tubes 61 be on the same horizontal plane, and described bottom an electric heating element 52 is on the same horizontal plane with described bottom convection tubes 62.Thus; Not only reduced the distance between an electric heating element 51,52 and the glass to be processed 7; Strengthened yield of radiation, also can not stop the convective heat exchange between convection tubes 61,62 and the glass to be processed 7, can more quickly processed glass 7 be heated to glass and close on softening temperature.Described glass closes on softening temperature, generally is between 600 ℃～650 ℃.
In the present embodiment; Several adjacent top an electric heating element 51 are connected in series and constitute a top heating module 91; Several adjacent bottom an electric heating element 52 are connected in series and constitute a lower heating module 92 (described heating module 91,92 is all shown in the dotted rectangle among Fig. 3; Rectangular), each heating module 91,92 all is furnished with a by-pass cock (not giving diagram) and a thermopair (also not giving diagram).This thermopair can be measured each regional temperature of glass to be processed in real time, thereby controls the keying of each heating module 91,92 on this basis.Thus, when simplifying temperature control difficulty, reducing cost, can also keep temperature controlled handiness.For example; In thermocouple measurement that certain heating module 91,92 is disposed when the corresponding zone (like the middle portion of this glass) of processed glass 7 needs extra heating; Then will open with processed glass 7 these corresponding zone part opposite heating modules 91,92; Close simultaneously and processed glass 7 superheat section opposite heating modules 91,92 (representing a heating module), the quantity of radiant energy that processed glass 7 middle portions are received increases, and reaches the purpose of local warming; Certainly; Also can make power increasing with processed glass 7 middle portion opposite heating modules 91,92; Make power reduction simultaneously with processed glass 7 peripheral part opposite heating modules 91,92; Also can realize local warming, processed glass 7 whole planar temperature reached unanimity, and then exactly processed glass 7 various pieces are heated to the temperature that glass can be accomplished tempering.Described glass can be accomplished the temperature of tempering, generally is between 680 ℃～720 ℃.
The bottom an electric heating element 52 of damage level roller-way 1 below when preventing that glass cullet that processed glass 7 produces when broken from falling, the present invention also is provided with protective guard 8 between bottom an electric heating element 52 and this horizontal roller 1.In the present embodiment; Described protective guard 8 is that transmitance is not less than 30% perforation thin plate, and the perforation on this protective guard 8 is that diameter is not more than 9 millimeters circular hole, and each circular hole is evenly arranged by matrix form; Thus, this protective guard 8 just can not cause the resistance of too big influence to air cycle.The material of protective guard 8 is resistant to elevated temperatures stainless steel, is the strip plate, and each protective guard 8 covers the top of each root bottom an electric heating element 52 separately.
For the rate of heating at the upper and lower surfaces place that makes processed glass 7 consistent; In the present embodiment; Distance between top convection tubes 61 and top an electric heating element 51 and horizontal roller 1 upper surface equals the distance between bottom convection tubes 62 and bottom an electric heating element 52 and horizontal roller 1 upper surface.
In general; Distance between top convection tubes 61 and top an electric heating element 51 and horizontal roller 1 upper surface is in 60mm～120mm scope, and the distance between bottom convection tubes 62 and bottom an electric heating element 52 and horizontal roller 1 upper surface is in 130mm～220mm scope.
In addition; Can see that from Fig. 2 this top equates with the quantity of bottom convection tubes 61,62, and is over against arranging; From Fig. 1, then can see; Up and down over against two top and bottom convection tubes 61, fluid orifice 63 between 62 be and be dislocatedly distributed, can see from Fig. 3 that again two convection tubess 61, the fluid orifice between 62 63 that level is adjacent also are and are dislocatedly distributed.Adopt the distribution form of such fluid orifice dislocation, purpose is to prevent that high temperature air relative or that adjacent fluid orifice 63 blows out is superimposed upon formation wind spot on the processed glass 7.
Referring to Fig. 1, introduce the heating means of process furnace of the present invention again:
Air in the body of heater 2 circulates under the driving of described high-temperature blower 41,42; Take away the heat that an electric heating element 51,52 produces; Being ejected into processed glass 7 surfaces after the pressurization heats with the mode of convection current; Concrete circulating path is as shown in Figure 1 to be a → b → c → d → e → a, and the air of the top of horizontal roller 1, below in the body of heater 2 is because the relatively independent circulating path of each self-forming of partition of processed glass 7; The heat that described an electric heating element 51,52 produces also can directly be delivered to heat through the radiating form surface of processed glass 7;
In the whole heat-processed; Be to be that principal mode heats processed glass 7 with the convective heating earlier; Be heated to after glass closes on softening temperature to processed glass 7; Be that principal mode heats processed glass 7 with heating module 91,92 radiation heatings again, reach the temperature that glass can be accomplished tempering until processed glass 7.
Adopt the purpose of above-mentioned heating means; It is the characteristic of utilizing convective heating faster than radiation heating; Can regional thermoregulated characteristics according to the matrix radiation heating of equipment; Earlier the temperature of processed glass is closed on softening temperature to glass fast, with the mode of matrix radiation heating the various piece of processed glass all is heated to the temperature that glass can be accomplished tempering again with the mode of convective heating.
Wherein: described convective heating is that principal mode heats processed glass, is meant each an electric heating element 51,52 with heating with full power, and high-temperature blower 41,42 is to be not less than the rotating speed smooth operation of specified speed 80%.Process furnace is under this working order; An electric heating element 51,52 is with heating with full power; Processed glass surface is taken away and be ejected into to air with the heat major part that an electric heating element produces in the body of heater; The heat direct radiation of having only few part is to processed glass surface, and macroscopical temperature of processed glass can raise up at this working stage apace.
Wherein: described matrix radiation heating is that principal mode heats processed glass, is meant that each heating module 91,92 independently opens or close, and high-temperature blower 41,42 is with the rotating speed smooth operation that is not higher than specified speed 20% or shut down.Process furnace is under this working order; The interior air cycle of body of heater weakens or stops; It is very little to take away and be ejected into the heat that an electric heating element of processed glass surface produces by air; Most heat is to arrive processed glass surface with forms of radiation, because the radiation heating of heating module 91,92 can regional temperature adjustment, the temperature at each position can independent very delicately control in the process furnace again.The various piece of processed glass can be heated to the temperature that can accomplish tempering quickly and accurately.
Can know from above-mentioned record, adopt embodiment of the present invention, can quickly and accurately processed glass various piece be heated to the temperature that glass can be accomplished tempering, avoid because non-uniform temperature causes the tempering failure.
The embodiment that the foregoing description is very complete a, composition optimizes; In actual use; Can do a lot of replacements and modification, as: the above-mentioned furnace air recycle system only is set in the upper of furnace body space, and the above-mentioned furnace air recycle system is not set in the lower space; Perhaps reduce the quantity of the convection tubes in the lower space, all be fine; The shape of convection tubes also can adopt other geometrical shapies except straight tube-like; High-temperature blower the position is set, except sidewall, also can be arranged on the position such as roof or diapire of body of heater; Yet in any case revise, those of ordinary skills understand, and modification, variation or the equivalence under the situation of spirit that does not break away from claim and limited and scope, made all will fall within protection scope of the present invention.
Claims (12)
1. a glass tempering is used process furnace; Has a body of heater; Be formed with the heating space of sealing in this body of heater; Be spaced many horizontal rollers on the horizontal plane in the heating space of this body of heater, the glass to be processed that is positioned on this horizontal roller can be divided into disconnected upper space of relative closure and lower space with this heating space; It is characterized in that:
In this upper space, be provided with several top high-temperature blowers; The air intake vent of each top high-temperature blower all is connected with this upper space; The air outlet of each this top high-temperature blower is communicated with a top air main; Each top air main is communicated with many again and is positioned at this horizontal roller top and spaced top convection tubes that is parallel to each other, and every top convection tubes downside evenly is interval with a plurality of fluid orifices;
Between any two adjacent upper convection tubess, be arranged with a top an electric heating element in parallel, described top an electric heating element and described top convection tubes are on the same horizontal plane.
2. glass tempering according to claim 1 is used process furnace, it is characterized in that:
Below this horizontal roller, be provided with several bottom high-temperature blowers; The air intake vent of each bottom high-temperature blower all is connected with this lower space; The air outlet of each bottom high-temperature blower is communicated with a bottom air main; Each bottom air main is communicated with many again and is positioned at this horizontal roller below and spaced bottom convection tubes that is parallel to each other, and every bottom convection tubes upside evenly is interval with a plurality of fluid orifices;
Between any two adjacent bottom convection tubess, be arranged with a bottom an electric heating element in parallel, described bottom an electric heating element and described bottom convection tubes are on the same horizontal plane.
3. glass tempering according to claim 2 is used process furnace, it is characterized in that, each top or bottom high-temperature blower all are close to the inner side-wall setting of this body of heater, and respectively by a drive device drives rotation of being located on the body of heater outer side wall.
4. glass tempering according to claim 2 is used process furnace; It is characterized in that; Each top or bottom convection tubes all are to be parallel to the straight tube that this horizontal roller is provided with; The two ends of each top convection tubes respectively be arranged on two sidewalls of body of heater on the top air main be connected, the two ends of each bottom convection tubes respectively be arranged on two sidewalls of body of heater on the bottom air main be connected.
5. glass tempering according to claim 1 is used process furnace, it is characterized in that, several adjacent top an electric heating element are connected in series and constitute a top heating module, and each top heating module is furnished with a by-pass cock and a thermopair.
6. glass tempering according to claim 2 is used process furnace; It is characterized in that; Several adjacent top an electric heating element are connected in series and constitute a top heating module; Several adjacent bottom an electric heating element are connected in series and constitute a lower heating module, and each top heating module all is furnished with a by-pass cock and a thermopair with each lower heating module.
7. glass tempering according to claim 6 is used process furnace, it is characterized in that, this top heating module and lower heating module are all rectangular.
8. glass tempering according to claim 2 is used process furnace, it is characterized in that, between each bottom an electric heating element and this horizontal roller, is provided with a protective guard, and this protective guard is that transmitance is not less than 30% perforation thin plate.
9. glass tempering according to claim 8 is used process furnace, it is characterized in that, the perforation on this protective guard is that diameter is not more than 9 millimeters circular hole, and each circular hole is evenly arranged by matrix form.
10. glass tempering according to claim 2 is used process furnace; It is characterized in that; Distance between this top convection tubes and this top an electric heating element and the horizontal roller upper surface equals the distance between this bottom convection tubes and this bottom an electric heating element and the horizontal roller upper surface.
11. glass tempering according to claim 10 is used process furnace; It is characterized in that; Distance between this top convection tubes and this top an electric heating element and the horizontal roller upper surface is in 60mm～120mm scope, and the distance between this bottom convection tubes and this bottom an electric heating element and the horizontal roller upper surface is in 130mm～220mm scope.
12. glass tempering according to claim 2 is used process furnace; It is characterized in that; This top convection tubes equates with the quantity of this bottom convection tubes and is over against arranging; Up and down over against two upper and lower part convection tubess between fluid orifice be and be dislocatedly distributed, two top that level is adjacent or the fluid orifice between the convection tubes of bottom also are and are dislocatedly distributed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100740962A CN102690047A (en) | 2011-03-25 | 2011-03-25 | Heating furnace for glass tempering |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100740962A CN102690047A (en) | 2011-03-25 | 2011-03-25 | Heating furnace for glass tempering |
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| CN102690047A true CN102690047A (en) | 2012-09-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105562693A (en) * | 2014-10-14 | 2016-05-11 | 宁波江丰电子材料股份有限公司 | Protecting device for heating equipment |
| CN106986528A (en) * | 2017-05-04 | 2017-07-28 | 绥中远图科技发展有限公司 | A kind of glass tempering furnace convection heating system |
| CN108002712A (en) * | 2017-11-23 | 2018-05-08 | 鹤山市正大汽车玻璃有限公司 | A kind of outer uniform apparatus for baking of odd test material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105562693A (en) * | 2014-10-14 | 2016-05-11 | 宁波江丰电子材料股份有限公司 | Protecting device for heating equipment |
| CN105562693B (en) * | 2014-10-14 | 2018-05-08 | 宁波江丰电子材料股份有限公司 | heating equipment protection device |
| CN106986528A (en) * | 2017-05-04 | 2017-07-28 | 绥中远图科技发展有限公司 | A kind of glass tempering furnace convection heating system |
| CN108002712A (en) * | 2017-11-23 | 2018-05-08 | 鹤山市正大汽车玻璃有限公司 | A kind of outer uniform apparatus for baking of odd test material |
| CN108002712B (en) * | 2017-11-23 | 2020-06-19 | 鹤山市正大汽车玻璃有限公司 | External-pumping type material uniform baking device |
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Application publication date: 20120926 |