Control method and device of drying machine and drying machine

Abstract

The invention discloses a control method and device of a drying machine and the drying machine. The method comprises the following steps that whether the moisture content change condition of air at anair inlet in a drying chamber of the drying machine reaches a set moisture content change condition or not is determined, and / or whether the weight change condition of a to-be-dried material reachesa set weight change condition or not is determined; and if the moisture content change condition of the air reaches the set moisture content change condition, and / or if the weight change condition ofthe to-be-dried material reaches the set weight change condition, the drying machine is shut down. According to the scheme, the defects that in the prior art, the manual labor amount is large, the drying effect is poor and the quality of the material cannot be guaranteed can be overcome, and the beneficial effects that the manual labor amount is small, the drying effect is good and the quality ofthe material can be guaranteed can be achieved.

Description

technical field [0001] The invention belongs to the technical field of heat pump drying, and in particular relates to a control method and device of a drying machine, and a drying machine, in particular to an automatic control method of a heat pump drying machine, a device corresponding to the method, and a heat pump drying machine with the device . Background technique [0002] The heat pump is a heat raising device. The high-temperature heat pump drying unit uses the reverse Carnot principle to absorb heat from the surrounding environment and transfer it to the heated object (higher temperature object). At present, heat pump dryers are widely used in the drying of hotel bedding, food, medicinal materials, paper, mineral raw materials, etc. Traditional heat pump dryers are basically open-loop control, but in recent years, as users have gradually increased their attention to the drying quality of materials, closed-loop heat pump dryers have gradually replaced traditional op...

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Problems solved by technology

[0005] The object of the present invention is to, aiming at the above-mentioned defects, provide a drying machine control method, device and drying machine, so as to solve the problem that the heat pump drying machine in the prior art cannot accurately control the drying time and drying degree, which leads to drying. The problem of poor effect can achieve the effect of improving the drying effect

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