Air source heat pump drying device and drying method thereof

Abstract

The invention discloses an air source heat pump drying device and a drying method thereof. The air source heat pump drying device comprises a drying room and an air source heat pump drying machine, wherein the drying room is connected between a hot source air inlet and a hot source air outlet of the air source heat pump drying machine through an air flue in a communication mode, the air source heat pump drying machine comprises a compressor, a condenser, an expansion valve and an evaporator which sequentially communicate with one another and form a circulating pipeline, the condenser is provided with two openings for forming the hot source air inlet and the hot source air outlet, and the condense is further provided with a dehumidification mechanism used for discharging dampness in airstreams. The air source heat pump drying device improves control for the drying degree, reduces pollution to environment, adds a humidification device, and meets drying demands of special woods.

Description

technical field [0001] The invention relates to the technical field of wood drying equipment, in particular to an air source heat pump drying device and a drying method thereof. Background technique [0002] Wood contains a certain amount of moisture. The amount of moisture in wood varies with tree species, age and felling season. In order to ensure the quality of wood and wood products and prolong the service life, appropriate measures must be taken to reduce the moisture (moisture content) in the wood to a certain extent. To reduce the moisture content of wood, it is necessary to increase the temperature of the wood, so that the water in the wood evaporates and moves outward. In the air with a certain flow rate, the water leaves the wood quickly to achieve the purpose of drying. [0003] There are a lot of existing drying equipment, some of which use coal, fuel oil or biomass to generate high-temperature steam through the heat exchange coil, and blow out hot air to achie...

AI Technical Summary

Problems solved by technology

There are many shortcomings in this equipment, for example: 1. Coal, biomass, oil, etc. are all non-renewable energy sources, and there are waste gas emissions during combustion, polluting the environment, and the energy utilization rate is not high

2. Steam is generated by heating water, the cost is high, the temperature control is not accurate, and the quality control of the drying product is not good

3. It cannot have its own dehumidification function, and the hot and humid steam in the drying room cannot be discharged outside through the dehumidification fan

Therefore, this improved drying equipment does not have the function of humidification, and still cannot meet the drying needs of these special woods.

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