Heater for bulk curing barn

Abstract

The invention discloses a heater for a bulk curing barn, which comprises a heating furnace and a heat exchanger. A furnace top heat radiating fin is arranged on a furnace top gland; a secondary air inlet passage for negative-pressure combustion is arranged on the outer wall of a furnace body; the heat exchanger comprises a left fire box, a right fire box and a heat exchange pipe which is positioned between the two fire boxes and communicated with the fire boxes; a bracket and a smoke passage which is communicated with an inner cavity of the furnace body are installed on the furnace top gland;a fin is arranged on the outer wall of the smoke passage; the bracket is supported under the left fire box of the heat exchanger; and the right fire box of the heat exchanger is communicated with theinner cavity of the furnace body through the smoke passage. The heater disclosed by the invention not only has a compact structure but also has the natural convection heat exchange efficiency of reaching more than 44 percent and the ventilating heat exchange efficiency of reaching more than 47 percent; the equipment is provided with a dust removing device, reduces the accumulated dust on a heat radiating pipe and is provided with a positive-pressure combustion-supporting fan, a negative-pressure combustion-supporting fan and a proper chimney; accordingly, compared with the traditional heater,the heater has good heat exchange effect and improves the precision of temperature control.

Description

technical field [0001] The invention belongs to a heating device for flue-cured tobacco, in particular to a heater used in a dense barn. Background technique [0002] The current flue-cured tobacco equipment not only cannot burn coal fully, but also cannot fully utilize the heat. In order to improve the thermal efficiency of the flue-cured tobacco equipment, the "Intensive Environmental Protection and Energy-saving Flue-cured Tobacco Device" with the patent application number of 200720117320. area, and re-sent the incompletely burned hot flue gas to the tail of the furnace body, which not only absorbs the exhaust temperature, but also helps the combustion chamber to support the combustion, supplements the heat of the heat dissipation pipe, so that the coal can be fully burned without black smoke. This arrangement improves thermal efficiency. However, the heat exchange efficiency of this intensive environment-friendly and energy-saving flue-cured tobacco device is relatively...

AI Technical Summary

Problems solved by technology

[0002] The current flue-cured tobacco equipment not only cannot burn coal fully, but also cannot fully utilize the heat. In order to improve the thermal efficiency of the flue-cured tobacco equipment, the "Intensive Environmental Protection and Energy-saving Flue-cured Tobacco Device" with the patent application number of 200720117320. area, and re-sent the incompletely burned hot flue gas to the tail of the furnace body, which not only absorbs the exhaust temperature, but also helps the combustion chamber to support combustion, supplement the heat of the heat dissipation pipe, so that the coal can be fully burned without black smoke. This device improves thermal efficiency

However, the heat exchange efficiency of this intensive environment-friendly and energy-saving flue-cured tobacco device is relatively low.

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