A high-efficiency and stable magnetic levitation chiller, control method and device

Abstract

The invention discloses an efficient and stable magnetic levitation chiller, a control method and a device. The chiller can effectively increase the supercooling degree of the refrigerant by adopting the way of taking liquid afterward, thereby reducing the flashing of the refrigerant and improving the overall The energy efficiency ratio of the chiller; the control method calculates the load through the actual outlet water temperature, sets the target temperature of the outlet water, and compares the actual outlet water temperature with the target temperature, combining the difference between the actual outlet water temperature and the target temperature and starting The temperature difference or the size of the shutdown temperature difference, adjust the working state of the compressor of the chiller, and divide the working state of the chiller into four working states: load the corresponding load per cycle, increase the compressor, unload the corresponding load per cycle and reduce the number of compressors. , improve the control accuracy of the chiller, reduce the frequency of compressor start and stop, and make the operation of the system more stable and reliable.

Description

technical field [0001] The invention relates to the field of air-conditioning and refrigeration devices and their control, in particular to an efficient and stable magnetic levitation chiller, a control method and a device. Background technique [0002] The magnetic levitation chiller has the advantages of energy saving and high efficiency, low operating noise and vibration, high efficiency and no friction loss, low starting current, low daily maintenance costs, green environmental protection and high system sustainability, and has become an important role in central air conditioning. [0003] Existing maglev chillers generally use the inlet temperature or outlet temperature of chilled water as a reference temperature to adjust the operating status of each component to achieve the required current temperature. [0004] If the chiller adjusts the operating state of each component of the chiller with the goal of keeping the chilled water outlet temperature constant within the ...

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Problems solved by technology

[0006] In view of the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a highly efficient and stable magnetic levitation chiller, aiming to solve the technical problems of the magnetic levitation chiller in the prior art that the operation is not stable enough and the energy efficiency is low

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