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A frequency conversion flue-cured tobacco heat pump dual-power curing barn and its curing modulation process

A frequency conversion, dual-power technology, applied in tobacco, tobacco preparation, application, etc., can solve the problems that the temperature adjustment is not precise and stable, the output power can only be controlled in sections, and the heating efficiency is low, so as to ensure the yellowing and constant temperature. The effect of color coordination, prevention of high temperature condition curing tobacco leaves, and high heat utilization efficiency

Active Publication Date: 2021-05-04
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 flue-cured tobacco heat pump dual-power curing barn and its curing modulation process
  • A frequency conversion flue-cured tobacco heat pump dual-power curing barn and its curing modulation process
  • A frequency conversion flue-cured tobacco heat pump dual-power curing barn and its curing modulation process

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Experimental program
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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 dual power barn and a roasting modulation process thereof. The variable-frequency flue-cured tobacco heat pump dual-power barn includes a flue-cured tobacco room, a heating room, a heat pump unit, and a biomass fuel furnace. An air inlet and a return air port for supplying heated air to circulate and flow are arranged between the flue-cured tobacco room and the heating room, and a heat pump is installed in the heating room. unit, biomass fuel furnace. The frequency conversion type flue-cured tobacco heat pump dual-power baking modulation process includes a yellowing period, a withering period, a color-fixing period and a gluten-drying period. The invention adopts the closed-circuit circulation of air flow and the external heating of the biomass fuel furnace to be used simultaneously or alternately to form dual-power baking, and the automatic control is realized through the control device, which can finely control the temperature change, high heat utilization efficiency, and low baking cost and energy saving, reduce the loss of tobacco leaf curing modulation, improve the quality of curing, make the tobacco leaf yellowing and color fixing coordinate, drying and aroma match, and achieve the baking goal of tobacco leaf curing yellowing, drying and roasting aroma.

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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Patent Type & Authority Patents(China)
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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