Cascade drying system and its control method, device and storage medium
A technology of drying system and control device, applied in drying, dryer, refrigeration and liquefaction, etc., can solve problems such as poor control performance
Active Publication Date: 2020-08-11
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
[0004] Based on this, it is necessary to provide a cascade drying system with good temperature control performance and its control method, device and storage medium for the technical problem of poor control performance of the traditional cascade system
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[0036] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0037] In one embodiment, such as figure 1 As shown, a cascade drying system includes a control device, a low-temperature side compressor unit 110, a high-temperature side compressor unit 120, a condensation-evaporator assembly, a first control valve, a second control valve, a first condenser and a single To the conduction device, the control device is connected to the low temperature side compressor unit 110, the high temperature side compressor unit 120, the first control valve and the second control valve, the low temperature side compressor unit 110 is connected to the...
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The invention relates to a cascade type drying system, a control method, a device and a storage medium thereof. The control device acquires the outdoor environment temperature and the temperature of the drying room; determining the operation stage of the drying system according to the temperature of the drying room and the preset temperature of the drying room; and according to the operation stage of the drying system, the outdoor environment temperature and the preset low-temperature circulation are suitable for controlling the starting and stopping of all the components of the drying system under the highest evaporation temperature, so that the difference between the temperature of the drying room and the target temperature of the preset drying room is maintained within a preset temperature difference threshold value range, wherein each component of the drying system comprises a low-temperature side compression unit, a high-temperature side compression unit, a first control valve and a second control valve. The operation modes are switched through different drying stages, so that the difference value between the temperature of the drying room and the target temperature of the preset drying room is maintained the temperature in the drying room is maintained within the preset temperature difference threshold value range, and the temperature control performance is high.
Description
technical field [0001] The present application relates to the technical field of heat pump drying, in particular to a cascade drying system and its control method, device and storage medium. Background technique [0002] Heat pump drying is widely used in industrial and agricultural fields, and its use areas are all over the country. [0003] The cascade system has the characteristics of expanding the temperature difference of cyclic work. my country has a vast territory and a large temperature span. Therefore, the cascade system can adapt to the temperature conditions in different regions and is widely used in drying systems. The stable temperature of the drying room in the drying system is conducive to improving the quality of the finished product, ensuring the excellent hue and aroma of the product, and improving economic benefits. In the drying process, the temperature and humidity of the air in the drying room have a profound impact on the quality of the dried product. ...
Claims
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IPC IPC(8): F26B21/00F26B21/06F25B7/00F25B49/02
CPCF25B7/00F25B49/02F26B21/002F26B21/06
Inventor 何建发王晓红陆飞荣张鸿宙郑神安
Owner GREE ELECTRIC APPLIANCES INC