我厂制造的JRF系列立筒式金属体燃煤间接加热热风炉产品，是由中国农业工程研究设计院设计，经过五次升级换代达到了车内水平，并干一九八九年二月二日获得国家技术产品。该炉采用了集燃烧与换热为一体，以炉体高温部位进行换热的间接加热技术。烟气和空气各走其道，加热无污染，热效率高达65-80%，升温快，体积小，安装方便、使用可靠，且价格低 (与1吨锅炉相比，该加热系统只相当干锅炉加热系统价格的一半)。采取了耐高温措施，从而使其寿命比列管式热风炉大大提高，输出热风温度可达300度，采用特殊设计输出热风温度可达500-800度，同时采用了烟气纵向冲刷散热片和负压吸式排烟方式，换热部位不积灰尘，无须清理，热性能稳定。可使用各种煤或柴作燃料，并配有二次进风装置，燃烧*。
该炉的各项技术经济指标均达到了国内水平。
该炉为通用性热风加热装置，与各种物料的干燥设计设备使用。广泛用于粮食，种子，饲料，果品·脱水蔬菜，香菇·木耳，银耳·茶叶，烟叶等农产品，食品、医药药品，化工原料，轻重工业产品的加热除湿。还可用于各种设施的加热以及库房除湿等。
目前该炉己形成十个产品，三大系列、其输出热量为：
1.045x1O5 kj/h 6.270xlO5 kj/h 2.508X1O6 kj/h 6.688x1O6 kj/h 1.672x1O5 kj/h 1.254x1O6 kj/h 3.344x1O6 kj/h
8.360x1O6 kj/h 3.344x1O5 kj/h 1.672x106 kj/h

Model JRF series coal fuel hot ar furnace manufactured by our factory is a vertical cylinder metallic case coal fuel indirect heating hot air furnace.It was designed by China Agricultural Engineering Institute. Through five times improving.its quality is in the leading position in China.It had been approbated as China paten product on February 2,1989.The furnace integrates combustion and heat exchange in its one body and adapts the newest indirect heating technology with the part of high temperature to carry out heat exchangers heat efficiency can reach as high as 65-80%.its features are quickj in temperatureraising,compact.convenient in installation,reliable in operating,cheap in price(Compaared with 1 ton of sent hot air will be 300.1f adapt special design,the temperature of sent hot air will be 500-800.Meamwhile being adapted vertical scouring type radiation pieces and negativ pressure suction to remove smoke,mthe place of heat exchange does not accumulate dust.So it does not need to clean and its thermal performance is stable.It can use all kinds of coal offirewc
equipped secondary air in device,its combustion is fully.All technical and economic indexes are in leading place domestic.
The furnace is a universal hot air heating device.It can be equipped with all kinds of drying equipment.It is woide used for damp removing of agricultural products such as grain,seeds,reedstuff,fruits, dehydrated vegetables,passnia fungus ,agaric,white fungus,tea ,tobacco leaf;foofstuff,medicines,chemical raw materials,products of light and heavy industry.It can alse used for all kinds of facilities to heat and three series.Its heat to be output is:
1.045xl05kj/h 6.270xl05kj/h 2.508xl06kj/h 6.688xl06kj/h 1.672xl05kj/h 1.254xl06kj/h 3.344xl06kj/h
8.360xl06kj/h 3.344xl05kj/h 1.672xl06kj/h