Heat pump drying room

Abstract

The invention discloses a heat pump drying room. The heat pump drying room comprises at least one drying house and at least one set of heat pump drying systems, wherein each set of heat pump drying systems comprises at least one group of heat pump units, and a condenser outlet of each heat pump unit is equipped with a centrifugal fan capable of discharging air by 360 degrees; one set of heat pumpdrying systems is arranged in each drying room, and the centrifugal fan is arranged on the top or the bottom of the middle position of the drying room; high-temperature dried air generated by each heat pump drying system is diffused to the periphery from the top or the bottom of the middle position of the drying room; and adjacent two drying rooms share one set of heat pump drying systems, and thecentrifugal fan is arranged on the top or the bottom of the middle position of a partition wall shared by adjacent two drying rooms; and high-temperature dried air generated by each heat pump dryingsystem is diffused towards the periphery for conveying towards the two drying rooms.

Description

technical field [0001] The invention relates to the technical field of dehumidification device design, in particular to a heat pump drying room. Background technique [0002] In the era when coal, diesel, natural gas and other fossil energy hot blast stoves and biomass particle hot blast stoves are used as heat sources for drying tobacco leaves and agricultural products, the heating room is usually separated from the drying room (baking room) and set outside the drying room; During the dry operation, the high-temperature dry air produced by the hot blast stove is input into the drying room, and after heat and moisture exchange with the wet tobacco leaves, granular agricultural products and other moisture-containing materials in the drying room, it becomes a warm and humid air flow and then discharged out of the drying room; [0003] The heating room is usually separated from the drying room (baking room) and placed outside the drying room, first of all, it is conducive to sa...

AI Technical Summary

Problems solved by technology

[0005] 1. Uneven drying

[0006] Taking the drying of tobacco leaves as an example, after the dry air sent by the coal-fired hot air stove in the left heating room enters the drying room, the air flow field is asymmetrical and uneven: near the heating room, the static pressure head of the air flow is small and the dynamic pressure head is large , far away from the heating chamber, the static pressure head of the airflow is large and the dynamic pressure head is small, resulting in uneven airflow field passing through the tobacco leaves and uneven drying speed of the tobacco leaves;

[0007] 2. Large loss of heat leakage

[0008] Since the heating room is placed outside, the heating device is in a high temperature area, and the radiation and convection heat leakage to the environment is serious. The air duct connecting the heating device and the drying room has serious radiation and convection heat leakage to the environment, and the heat leakage loss is large.

[0009] 3. The long flow line of the dry air flow has a large resistance

[0010] Since the heating room is located outside, the streamline of the heated fresh air and the heat and humidity exchange in the flue-cured tobacco room is long, and the flow resistance is large, which increases the power consumption of the fan;

[0011] 4. Large loss of spice substances

[0012] Due to the use of external moisture removal, fresh air is continuously added, and warm and humid air containing water vapor and flavoring substances of tobacco leaves is continuously discharged, resulting in a large loss of flavoring substances during the curing process and a decline in the quality of flue-cured tobacco.

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