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A frequency conversion type flue-cured tobacco heat pump double-power curing barn and a curing and blending process thereof

A variable-frequency, dual-power technology, applied in the fields of tobacco, tobacco preparation, application, etc., can solve the problems that the temperature adjustment is not fine and stable, the output power can only be controlled in sections, and the heating efficiency is low, so as to ensure the coordination of color setting, The effect of preventing tobacco leaves from being roasted under high temperature conditions and reducing the rate of defective products

Active Publication Date: 2019-01-18
YUNNAN ACAD OF TOBACCO AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although electromagnetic heating heats up quickly, it consumes a lot of energy, has low thermal efficiency, and is not energy-saving; while electric heating ovens such as resistance heating and infrared heating remove (or retain) the original heating equipment in the oven, and replace the original heating equipment in the oven. Install multiple sets of resistance wires or far-infrared carbon fiber electric heating tubes in the heating room and the flue-cured tobacco room, and adjust the temperature in the barn by controlling different combinations of multiple sets of resistance wires or far-infrared carbon fiber electric heating tubes. Although the control is relatively simple, no matter the resistance wire Or far-infrared carbon fiber electric heating tubes have low heating efficiency and output power can only be controlled in sections, resulting in the problem that the temperature adjustment is not fine and stable enough

Method used

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  • A frequency conversion type flue-cured tobacco heat pump double-power curing barn and a curing and blending process thereof
  • A frequency conversion type flue-cured tobacco heat pump double-power curing barn and a curing and blending process thereof
  • A frequency conversion type flue-cured tobacco heat pump double-power curing barn and a curing and blending process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] 1A. After the tobacco leaves are loaded into the barn, after ignition, the dry bulb temperature is raised from room temperature to 37.0°C at a synchronous heating rate of 2.0°C / h, and the wet bulb temperature is 36.0°C. The humid air discharged from the flue-cured tobacco room 1a in 1h is pre-cooled and discharged to the heat pump evaporator 4a, and the humid air condenses on the surface of the heat pump evaporator 4a to form droplets to achieve dehumidification, so that the humid air can be dehumidified before entering Tobacco flue-curing room 1a, until the tobacco leaves in the high-temperature layer turn yellow by 6-8 cm;

[0076] 1B. With a synchronous temperature rise rate of 1.0°C / h, the dry bulb temperature is raised to 38.0°C and the wet bulb temperature is 37.0°C, and then the heat exchange device 7 is operated to absorb the humid air discharged from the flue-cured tobacco room 1a in the air duct for 1h, The moist air is pre-cooled and discharged to the heat pu...

Embodiment 2

[0090] (1) Yellowing period

[0091] 1A. After the tobacco leaves are loaded into the barn, after ignition, the dry bulb temperature is raised from room temperature to 38.0°C at a synchronous heating rate of 2.0°C / h, and the wet bulb temperature is 37.0°C. The humid air discharged from the flue-cured tobacco room 1a in 1h is pre-cooled and discharged to the heat pump evaporator 4a, and the humid air condenses on the surface of the heat pump evaporator 4a to form droplets to achieve dehumidification, so that the humid air can be dehumidified before entering Tobacco flue-curing room 1a, until the tobacco leaves in the high-temperature layer turn yellow by 6-8 cm;

[0092] 1B. With a synchronous heating rate of 1.0°C / h, the dry bulb temperature is raised to 40.0°C, and the wet bulb temperature is 38.0°C, and then the heat exchange device 7 is operated to absorb the humid air discharged from the flue-cured tobacco room 1a in the air duct for 1h, The moist air is pre-cooled and di...

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Abstract

The invention discloses a frequency conversion type flue-cured tobacco heat pump double-power curing barn and a curing preparation process thereof. The frequency conversion type flue-cured tobacco heat pump dual-power curing barn comprises a flue-cured tobacco chamber, a heating chamber, a heat pump unit, a biomass fuel stove, an air inlet for supplying circulating heating air flow between the flue-cured tobacco chamber and the heating chamber, an air return port, and a heat pump unit and a biomass fuel stove in the heating chamber. The frequency conversion type flue-cured tobacco heat pump dual-power curing and curing process comprises a yellowing period, a wilting period, a color fixing period and a dry rib period. The invention adopts gas flow closed-circuit circulation and biomass fuelfurnace external heating to be used simultaneously or alternately. As the double power curing is for and controlled automatically by the control device, the temperature change can be controlled precisely, the heat utilization efficiency is high, the curing cost is low and the energy is save, the curing loss of tobacco curing is reduced, the curing quality is improved, the tobacco leaves turn yellow and the color fixation are coordinated, the drying and the fragrance are matched, and the curing goal of curing tobacco leaves is realized.

Description

technical field [0001] The invention belongs to the technical field of tobacco curing equipment, and in particular relates to a frequency conversion type flue-cured tobacco heat pump dual-power curing barn and a curing modulation process thereof, which can effectively reduce energy consumption and improve heat utilization efficiency. Background technique [0002] With the rapid development of the tobacco industry, the demand for tobacco leaves is getting higher and higher. The production of high-quality tobacco leaves is the main direction of future development. The development of tobacco through science and technology has become the main theme of the development of traditional agriculture to modern tobacco leaves. Using advanced science and technology to highlight the supporting facilities of the curing barn, continuously improving the internal and external quality of tobacco leaves, reducing labor intensity and production costs, and increasing economic benefits have become ...

Claims

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Application Information

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IPC IPC(8): A24B3/10
CPCA24B3/10
Inventor 崔国民何德意飞鸿杨雪彪
Owner YUNNAN ACAD OF TOBACCO AGRI SCI
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