Principle
the coal burns in the grate,then smoke rise in the smoke way and discharge through the exhaust port .the air enter the air way through inlet port and discharge through Hot air outlet.Air and flue gas by indirect heat exchange through the furnace wall,to get pollution hot air.
Features
The stove set Combustion and heat transfer as one ,smoke and air flow in their way.Pollution,high Efficiency,Heating up fast,Small size,easy installation,lowprice.Taking high temperature resistant measures,,and the life Extend then other stove.Using technology of smoke Vertical erosion heat sink,the regenerator section has not gas.can has stable thermal.Variety of coal or firewood as fuel.
Scope of application
The stove is the versatile hot air equipment,can match with various drying equipment.Widely used to heat grain,seed, feed,fruits,dehydrated vegetables,Mushrooms,edible fungus,tea.Tobacco and other agricultural products,food,medicine, chemical raw materials.
Schematic of stracture

Technical parameters
| type | heat amount output 105KCal/h | air amount output(㎡/h) | coal combustion capacity(kg/h) | hot air temperature(℃) | cocking blower for cocking |
| JRF4-2.5 | 1.045 | 1500-560 | 60-200 | 10-12 | 炊事用鼓风 80-100W |
| JRF4-4 | 1.672 | 3500-930 | 600-200 | 14-17 | 炊事用鼓风 200-300W |
| JRF4-8 | 3.344 | 5600-1480 | 60-200 | 18-24 | Y5-47 No2.8C 1.1kw |
| JRF5-15 | 6.270 | 12000-2160 | 60-300 | 40-45 | Y5-47 No4C 2.2kw |
| JRF5-30 | 12.54 | 25000-4330 | 60-300 | 80-45 | Y5-47 No4C 3.0kw |
| JRF5-40 | 16.72 | 28000-5600 | 60-300 | 115-125 | Y5-47 No4C 3.0kw |
| JRF5-60 | 25.08 | 45000-8600 | 60-300 | 160-170 | Y5-47 No4C 3.0kw |
| JRF6-80 | 33.44 | 83000-12500 | 60-300 | 240-250 | GY2-111kw |
| JRF6-160 | 66.88 | 134400-23000 | 60-300 | 480-490 | GY4-118.5kw |
| JRF6-200 | 83.60 | 170000-28000 | 60-300 | 600-620 | GY4-118.5kw |