CN2182962Y - Indirect air heater burning oil or gas - Google Patents
Indirect air heater burning oil or gas Download PDFInfo
- Publication number
- CN2182962Y CN2182962Y CN 93222027 CN93222027U CN2182962Y CN 2182962 Y CN2182962 Y CN 2182962Y CN 93222027 CN93222027 CN 93222027 CN 93222027 U CN93222027 U CN 93222027U CN 2182962 Y CN2182962 Y CN 2182962Y
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- CN
- China
- Prior art keywords
- air
- heat exchange
- gas
- cylindrical shell
- burner
- 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 - Fee Related
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Abstract
The utility model discloses an indirect air heater burning oil or gas using the oil, the gas and the natural gas as the fuel to generate clean hot air, comprising a burner 1, a smoke return chamber, a heat exchange cylinder and a blower 6. The heat exchange cylinder is composed of an air guiding plate 2, a ceramic throttle ring 3, a group of concentric tubes 4 and a safety furnace door 5. The components are connected by flanges and bolts and are fixed on a movable frame 7 finally. The complete machine has the advantages of compact structure and flexible moving. The utility model can provide ideal clean hot air with higher temperature about 400 DEG in the drying industry. The control system of the utility model can achieve the desired hot air temperature of the technology by regulating the temperature of a fume outlet, the air quantity and the air-fuel ratio of the burner.
Description
Fuel oil (gas) indirect type air-heater is to be the device that fuel produces the cleaning hot blast with oil or coal gas, natural gas.
The hot air generator that now general drying equipment is joined is mostly with steam or electric as thermal source.The former limitation is that hot blast temperature is low and heat recovery rate is low, and the latter's shortcoming is that power consumption is big, and cost is high and be subjected to the restriction of distribution capacity in some area.Need just can not satisfy the requirement of technology with these hot air generators in the drying equipment of high-temperature hot-air (400 ℃) at some like this.Based on of the requirement of current drying industry to hot air generator, in conjunction with the present Energy Situation of China, developed high heat recovery rate, can produce fuel oil (gas) the indirect type air-heater that the suitable coal G﹠O of high-temperature hot-air acts as a fuel.
The hot blast that is used for drying equipment is to produce like this, the high-temperature flue gas that oil or (gas) produce through burner combustion, by the heat exchange cylindrical shell with the cold air indirect to the technological requirement temperature, supply with all kinds of drying equipments with the cleaning hot blast, constitute advanced drying system.
Concrete structure of the present utility model is provided by following examples and accompanying drawing.
Below in conjunction with its structure of description of drawings and working condition.
Fuel oil (gas) indirect type air-heater structure as shown in drawings, it is combined into burner 1 usefulness bolt by burner, oil pump, combustion fan and is connected with the smoke backflow chamber that exhanst gas outlet is arranged, be connected with the heat exchange cylindrical shell that hot-blast outlet is arranged that has wind deflector 2, ceramic restrictor ring 3, concentric tube group 4, safe fire door 5 compositions by flange then, its heat exchange cylindrical shell is communicated with air blast 6 by pipeline, is fixed in movably on the vehicle frame 7 by support at last.
Burner 1 is a burner, the organic assembling body of oil pump and combustion fan, efficiency of combustion height.The heat exchange cylindrical shell is the two comprehensive heat exchangers of backhaul radiation one convection current of flue gas and air.In order to reduce the flue gas discharge temperature, improve the heat recovery rate of complete machine, in the heat exchange cylindrical shell, designed the flue gas recirculation system.It is a power with the high-speed and high-temperature flue gas of burner ejection, and in the indoor generation negative pressure of smoke backflow, the part low-temperature flue gas of the feasible heat exchange of process cylindrical shell enters inner barrel by wind deflector 2 backflows of smoke backflow chamber, thereby realizes the recirculation of flue gas.Owing to the backflow of low-temperature flue gas, strengthened the flue gas flow of inner core, improved the radiation one convection current integrated heat transfer coefficient of flue gas and heat exchange cylinder inboard wall.The flue-gas temperature of inner core is reduced, improved condition of work, make thereby can choose than the material of low gear.Establish in the inner core a ceramic restrictor ring 3 it by the higher accumulation of heat of ceramic material, keep the inner core flue-gas temperature stable.Because the backflow of flue gas reduces the ignition temperature of fuel, reduces the exhaust smoke level to atmosphere, complete machine flue gas NOx discharge capacity reduces, and reduces air pollution.
In general radiation one convection current heat exchanger, air duct all is to reflux through urceolus to enter discharge pipe.The present invention has carried out bigger improvement in the design of air duct, the cold air that is blasted by air blast 6 enters crack 12 between the concentric tube group 4 made with heat resisting steel and the external tube of heat exchanger tube respectively by air duct 8, two strands of air-flows enter crack 13 between the heat exchange cylindrical shell inner core again, hot blast after heat exchange is discharged by hot-blast outlet 11, uses for drying equipment.The hot flue gas that fuel oil produces enters crack between the inside and outside tube by the cylindrical shell central space through rear portion 4 circular holes 14, a part is discharged from exhanst gas outlet 10, and the space that enters the cylindrical shell center again through restrictor ring 3 is mixed in the wind hole that the high velocity air that a part is sprayed by burner sucks on wind deflector 2.Concentric tube group 4 directly contacts high-temperature flue gas at inner core, and thermograde strengthens, and has improved the integrated heat transfer coefficient between flue gas and the air.This air flow can provide the cleaning hot blast of higher temperature (can reach 400 ℃) for drying equipment.
In the heat exchange cylindrical shell, flue gas and air duct are all two backhauls.Connection between two rings is dead with the steel pipe weldering, guarantees flue gas and the sealing that is preheated air.The annular passage through strengthening that concentric tube group front end and cold air duct communicate is connected and is welded together, the bending-type structure is adopted in the coupling part of itself and inner core, reduce because of the uneven stress that is produced that is heated, heat exchange cylindrical shell inner core is a free end by 9 places, smoke backflow chamber, it has guaranteed the channel cross-sectional area between each cylindrical shell, also is beneficial to the integral body assembling of main frame.Inlet of cold air place urceolus enlarged diameter guarantees that urceolus air duct flow velocity is even, avoids afterbody overheated.
Have the hole that links to each other with the concentric tube group on the heat exchange cylindrical shell endocyclic tube, hole that links to each other with hot-blast outlet 11 and exhanst gas outlet hole 14, wherein 11 of hot-blast outlets and endocyclic tube are welded together.
Pottery restrictor ring 3 materials are fireclay refractory, and its front console outer rim engages with inner core, engages with inner tube wall with gusset on the restrictor ring inner core length direction, keeps the position stability of restrictor ring.
Heat exchange cylindrical shell endocyclic tube, its material of concentric tube group and wind deflector is a heat-resisting alloy steel, the outer shroud tube material of its heat exchange cylindrical shell can be with general silicon steel manufacturing.
Heat exchange cylindrical shell afterbody is provided with a safe fire door 5, is connected with hinging manner with the heat exchange cylinder back-end, when causing the blower fan blowing-out because of faults such as power failures, can open fire door and make cold air enter cylindrical shell, avoids because the overheated in short-term inner core that causes damages.
Air-heater disposes control system, and it can pass through the exhanst gas outlet temperature, and the adjusting of air capacity and burner air-fuel ratio reaches the required hot blast temperature of technology.
Fuel oil (gas) indirect type air-heater comprises burner, the smoke backflow chamber, air blast and heat exchange cylindrical shell, as the integral installation of compactness on removable vehicle frame 7, the flexible use and the shift in position that help equipment can be the cleaning hot blast that dry industry provides desirable higher temperature.
Claims (3)
1, a kind of fuel oil (gas) indirect type air-heater, it is made up of burner, air blast, it is characterized in that: burner 1 usefulness bolt is connected with the smoke backflow chamber that exhanst gas outlet is arranged, be connected with the heat exchange cylindrical shell that hot-blast outlet is arranged that has wind deflector 2, ceramic restrictor ring 3, concentric tube group 4, safe fire door 5 compositions through flange then, its heat exchange cylindrical shell is communicated with air blast 6 by pipeline, is fixed in movably on the vehicle frame 7 by support at last.
2, air-heater according to claim 1 is characterized in that: heat exchange cylindrical shell inner core is a free end by place, smoke backflow chamber.
3, air-heater according to claim 1 is characterized in that: safe fire door 5 is arranged on heat exchange cylindrical shell afterbody.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93222027 CN2182962Y (en) | 1993-08-23 | 1993-08-23 | Indirect air heater burning oil or gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93222027 CN2182962Y (en) | 1993-08-23 | 1993-08-23 | Indirect air heater burning oil or gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2182962Y true CN2182962Y (en) | 1994-11-16 |
Family
ID=33800726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93222027 Expired - Fee Related CN2182962Y (en) | 1993-08-23 | 1993-08-23 | Indirect air heater burning oil or gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2182962Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901216A (en) * | 2011-07-28 | 2013-01-30 | 江苏南方涂装环保股份有限公司 | Gas heating system |
| CN104522867A (en) * | 2014-11-07 | 2015-04-22 | 重庆汇田机械制造有限公司 | Silkworm cocoon curing barn radiator |
| CN104359219B (en) * | 2014-11-07 | 2017-07-28 | 重庆汇田机械制造有限公司 | Silk cocoon barn combustion heating system |
-
1993
- 1993-08-23 CN CN 93222027 patent/CN2182962Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901216A (en) * | 2011-07-28 | 2013-01-30 | 江苏南方涂装环保股份有限公司 | Gas heating system |
| CN104522867A (en) * | 2014-11-07 | 2015-04-22 | 重庆汇田机械制造有限公司 | Silkworm cocoon curing barn radiator |
| CN104359219B (en) * | 2014-11-07 | 2017-07-28 | 重庆汇田机械制造有限公司 | Silk cocoon barn combustion heating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |