Refrigerant volume control method for modular water cooler

Abstract

The invention discloses a refrigerant volume control method for a modular water cooler. The refrigerant volume control method for the modular water cooler includes the steps of obtaining the temperature of outdoor environment, setting an initial opening of an electronic expansion valve according to adaptability of the temperature of the outdoor environment to adjust the electronic expansion valve, and setting an opening degree adjusting range of the electronic expansion valve according to the adaptability of the temperature of the outdoor environment; and obtaining the present superheat degree of the system, and adjusting the opening degree of the electronic expansion valve according to the adaptability of the present superheat degree. The opening degree of the electronic expansion valve can adapt to the current temperature condition so that the system can stably start working, the adjusting time is effectively shortened to rapidly reach the stable status, the adjusting range of the electronic expansion valve is preset so that the system reliability influenced by out of control of the electronic expansion valve adjustment in some abnormal status can be avoided; by adjusting the refrigerant volume through the adaptability of the superheat degree of the system, the refrigerant volume of the system can be controlled to operate in a position close to the optimal performance point, so that the superheat degree of the system is controlled, the reliable operation of the system is guaranteed, and the condition that a compressor operates with carrying liquid is avoided effectively.

Description

technical field [0001] The invention relates to the technical field of air-conditioning equipment, and more specifically, to a method for controlling the refrigerant flow rate of a modular water machine. Background technique [0002] The modular water machine system only entered the Chinese market in the 1980s. With its advantages of convenient expansion, free control, high efficiency and energy saving, and easy installation and maintenance, it quickly occupied an important position in the central air-conditioning market. [0003] The operating range of the modular water machine system is very wide, the cooling can be operated in the range of -5°C-48°C, and the heating can be operated in the ambient temperature of -15°C-30°C. Such a wide operating range requires extremely strong capacity adjustment capabilities. In addition, a system of modular water machines can be connected to multiple internal machines, and multiple internal machines can be independently controlled freel...

AI Technical Summary

Problems solved by technology

[0010] In view of this, the first object of the present invention is to provide a method for controlling the flow of refrigerant in a modular water machine. The structural design of the method for controlling the flow of refrigerant in a modular water machine can effectively solve the problem of poor control of existing modular water machines. Technical problems such as poor system stability and low energy efficiency ratio

Images