CN201306928Y - Air circulation structure of large straight-flow furnace - Google Patents
Air circulation structure of large straight-flow furnace Download PDFInfo
- Publication number
- CN201306928Y CN201306928Y CNU2008202165583U CN200820216558U CN201306928Y CN 201306928 Y CN201306928 Y CN 201306928Y CN U2008202165583 U CNU2008202165583 U CN U2008202165583U CN 200820216558 U CN200820216558 U CN 200820216558U CN 201306928 Y CN201306928 Y CN 201306928Y
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- 238000010438 heat treatment Methods 0.000 abstract description 13
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000009529 body temperature measurement Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 239000006104 solid solution Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model relates to an air circulation structure of a large straight-flow furnace. An air duct is arranged between a furnace body and a hearth; the upper wall of the furnace body is provided with a centrifugal fan communicated with the hearth; flow guiding cavities are respectively arranged between the two sides of the centrifugal fan and the air duct; and a heating unit is fixed in the air duct close to the flow guiding cavity. The utility model is of a traverse air circulation structure, the path through which the heat air of the hearth passes is short, the air speed is stable, the heat air flows from bottom to top, the resistance is small, and the flow is large, the heat-exchange area of the aluminium alloy wheel is large, and the heat is fast and uniform; the temperature measurement curve on heating the workpiece can reach the range of plus and minus 5 DEG C, the fan can be conveniently maintained and replaced, and the furnace is not blown out during production.
Description
Technical field
The utility model relates to a kind of heat treated large-scale straight-flow furnace of aluminium alloy that is used for, particularly the circulated air structure of its control furnace temperature uniformity.
Background technology
Aluminum alloy heat is handled because strict, and the solid solution heating-up temperature is near the burning temperature, and temperature retention time reaches 4～8 hours, and temperature uniformity requires at ± 5 ℃, and this just proposes higher requirement to its firing equipment.At present with the maximum automobile of cast aluminium alloy material, bike wheel, all select for use the large-scale straight-flow furnace of continous way more than annual capacity 50～1,000,000 to heat-treat.535 ± 5 ℃ of A356 material solid solution heating commonly used, 130～155 ± 5 ℃ of timeliness heating.
The solid solution stove burner hearth length that is used for the heat treated large-scale straight-flow furnace of aluminum-alloy wheel in 15～30m, aging furnace burner hearth length at 10～20m, burner hearth is wide and highly also between 2～m, workpiece mainly is to rely on the convection current conduction pattern to carry out during heating, this just requires burner hearth inside to have enough heats and rational circulated air mode to strengthen convection transfer rate, accelerate heat exchange, to guarantee the burner hearth thermal efficiency and even temperature field, make that each workpiece is in service in stove all to carry out same technology exactly.After heat and hot air flow were determined, the flow circuit mode of hot blast in burner hearth just played a part crucial.
The hot air circulation mode of present large-scale through burner hearth, all continue to use the vertical circulated air mode of long stove both at home and abroad, blow downwards by furnace roof one end, other end blower fan sucks back formation and follows bad, the defective of its existence is: 1. air supplying distance is long, and hot blast causes the hot blast temperature difference along its length along the heat radiation of burner hearth length direction.2. because furnace height is higher, cause upper furnace temperature height when hot blast takes a shorter way, temperature of lower is low, differs more than 10 ℃.To design the vertical circulated air more than two sections or two sections when 3. burner hearth is long, circulated air section before and after this just produces, phase mutual interference owing to the wind direction difference.In order to avoid disturbing, often set up in burner hearth that fire door separates it in one, this has increased heat loss and burner hearth length again.4. hot blast is big to the sidewall air supply resistance of workpiece, and the workpiece thermal uniformity is poor.5. blower fan maintenance furnace outage time is long.
Summary of the invention
The purpose of this utility model is to overcome circulated air mode and structural deficiency in the prior art, and a kind of circulated air structure that more effectively adapts to the large-scale straight-flow furnace of aluminum alloy heat treatment temperature uniformity requirement is provided.
The technical solution adopted in the utility model is: between body of heater and burner hearth the air channel is set, at the body of heater upper wall centrifugal blower is set and is communicated with burner hearth, between the both sides of centrifugal blower and air channel a diversion cavity is set respectively, heater is fixed near in the air channel of diversion cavity.
The utility model is the traverse cycle wind mechanism, can be along dividing a plurality of technology heat cycles wind district by the Technology for Heating Processing characteristic on the burner hearth length direction, each section length is between 2.5～3.2m, independently circulated air, heating, temperature-controlling system are equipped with in each district, hot blast enters burner hearth from the burner hearth both sides, implements circulation in the horizontal stove.
The utility model has the advantages that: 1. the distance of burner hearth hot blast process is short, and wind speed is more stable.2. burner hearth hot blast trend is from bottom to top, and resistance is little, flow is big, and the aluminum-alloy wheel heat exchange area is big, and heating is fast and even.3. workpiece heating thermometric curve can reach ± 5 ℃ of scopes in.4. blower fan maintenance, change convenient, during production without blowing out.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1. diversion cavity; 2. heater; 3. air channel; 4. burner hearth; 5. body of heater; 6. centrifugal blower.
The specific embodiment
As shown in Figure 1, between body of heater 5 and burner hearth 4 air channel 3 is set, thermal cycle centrifugal blower 6 that is communicated with burner hearth 4 of wall is made driving force on body of heater 5.Between the both sides of centrifugal blower 6 and air channel 3 diversion cavity 1 is set respectively, heater 2 is fixed near in the air channel 3 of diversion cavity 1.Circulated air flows to burner hearth 4 both sides along diversion cavity 1 air channel 3 contacts heating with heater 2, or the thermal current of combustion product is mixed, and enters in the stove from burner hearth 4 bottoms and carries out heat exchange with workpiece, is sucked back for 6 mouthfuls by the centrifugal blower of burner hearth 4 tops and finishes a circulation.Loop direction shown in arrow among Fig. 1.
The utility model can be pressed burner hearth length partition loops wind district quantity in the specific implementation, and heating zone circulated air district is advisable with 2.5～3.2m; Heat preservation zone circulated air section length is about 3 meters; Discharge zone for protecting the uniformity of furnace temperature, should be not more than 2.5 meters because near fire door, the outer wall radiation loss is big.Each is distinguished 3 in air channel and should isolate, and dilatation joint is stayed in the interval, and is trivial identical in the stove.The air quantity of thermal cycle centrifugal blower 6 is according to the empirical data of aluminum alloy heating furnace, and each distinguishes the hot air circulation number of times ratio of combustion space (hot air flow of each second with) should 〉=0.5 time/second; The air inlet width should be enough under the crosswind road reached.
Claims (1)
1. the circulated air structure of a large-scale straight-flow furnace, between body of heater (5) and burner hearth (4), air channel (3) is set, it is characterized in that: at body of heater (5) upper wall centrifugal blower (6) is set and is communicated with burner hearth (4), between the both sides of centrifugal blower (6) and air channel (3) diversion cavity (1) is set respectively, heater (2) is fixed near in the air channel (3) of diversion cavity (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202165583U CN201306928Y (en) | 2008-11-10 | 2008-11-10 | Air circulation structure of large straight-flow furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202165583U CN201306928Y (en) | 2008-11-10 | 2008-11-10 | Air circulation structure of large straight-flow furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201306928Y true CN201306928Y (en) | 2009-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202165583U Expired - Fee Related CN201306928Y (en) | 2008-11-10 | 2008-11-10 | Air circulation structure of large straight-flow furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN201306928Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219364A (en) * | 2011-06-21 | 2011-10-19 | 重庆飞达电炉有限公司 | Bottom lifting type resistance heating annealing furnace |
| CN104164546A (en) * | 2014-08-04 | 2014-11-26 | 苏州新凌电炉有限公司 | Heat exchanger for slow cooling and preheating of isothermal normalizing furnace |
| CN105603162A (en) * | 2016-02-23 | 2016-05-25 | 广州宏晟光电科技有限公司 | Box-type annealing furnace and annealing method using same |
| CN106755752A (en) * | 2016-11-14 | 2017-05-31 | 广东长盈精密技术有限公司 | A heat treatment method and heat treatment device for steel parts |
| CN107254576A (en) * | 2017-06-22 | 2017-10-17 | 宁波萨科森工业科技有限公司 | Annealing furnace swirl injection hot air circulation structure |
| CN107631600A (en) * | 2017-11-03 | 2018-01-26 | 天津市三木森电炉股份有限公司 | A kind of fireproof material drying oven |
| CN109827434A (en) * | 2019-03-26 | 2019-05-31 | 宜兴市恩创环保有限公司 | Electrode plate coating sintering furnace burner hearth with strong convection function |
| CN109827433A (en) * | 2019-03-26 | 2019-05-31 | 宜兴市恩创环保有限公司 | A kind of annular step-by-step movement electrode plate coating sintering furnace of automation |
| CN111440932A (en) * | 2019-01-16 | 2020-07-24 | 上海联赞工业炉有限公司 | Hot air circulating device of mesh belt furnace |
| CN111996355A (en) * | 2020-09-18 | 2020-11-27 | 湘潭华宇电炉制造有限公司 | Heat treatment heating furnace and heat treatment method |
-
2008
- 2008-11-10 CN CNU2008202165583U patent/CN201306928Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219364A (en) * | 2011-06-21 | 2011-10-19 | 重庆飞达电炉有限公司 | Bottom lifting type resistance heating annealing furnace |
| CN102219364B (en) * | 2011-06-21 | 2012-09-26 | 重庆飞达电炉有限公司 | Bottom lifting type resistance heating annealing furnace |
| CN104164546A (en) * | 2014-08-04 | 2014-11-26 | 苏州新凌电炉有限公司 | Heat exchanger for slow cooling and preheating of isothermal normalizing furnace |
| CN105603162A (en) * | 2016-02-23 | 2016-05-25 | 广州宏晟光电科技有限公司 | Box-type annealing furnace and annealing method using same |
| CN106755752A (en) * | 2016-11-14 | 2017-05-31 | 广东长盈精密技术有限公司 | A heat treatment method and heat treatment device for steel parts |
| CN107254576A (en) * | 2017-06-22 | 2017-10-17 | 宁波萨科森工业科技有限公司 | Annealing furnace swirl injection hot air circulation structure |
| CN107631600A (en) * | 2017-11-03 | 2018-01-26 | 天津市三木森电炉股份有限公司 | A kind of fireproof material drying oven |
| CN111440932A (en) * | 2019-01-16 | 2020-07-24 | 上海联赞工业炉有限公司 | Hot air circulating device of mesh belt furnace |
| CN109827434A (en) * | 2019-03-26 | 2019-05-31 | 宜兴市恩创环保有限公司 | Electrode plate coating sintering furnace burner hearth with strong convection function |
| CN109827433A (en) * | 2019-03-26 | 2019-05-31 | 宜兴市恩创环保有限公司 | A kind of annular step-by-step movement electrode plate coating sintering furnace of automation |
| CN109827433B (en) * | 2019-03-26 | 2024-06-18 | 宜兴市恩创环保有限公司 | Automatic annular stepping electrode plate coating sintering furnace |
| CN111996355A (en) * | 2020-09-18 | 2020-11-27 | 湘潭华宇电炉制造有限公司 | Heat treatment heating furnace and heat treatment method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090909 Termination date: 20161110 |