Refrigerant pump control method and device, refrigeration equipment

Abstract

The invention discloses a refrigerating medium pump control method and device and a refrigeration device. The refrigerating medium pump control method comprises the steps of obtaining a pressure value of a refrigerating medium discharged by an evaporator; comparing the obtained pressure value with a preset reference pressure value range; adjusting the refrigerating medium conveying rate of a refrigerating medium pump according to a comparison result. The refrigerating medium pump control method and device adjusts the refrigerating medium conveying rate of the refrigerating medium pump by comparing the pressure value of the refrigerating medium discharged by the evaporator with the preset reference pressure value range, can improve the accuracy of temperature control and adjustment of a refrigerating system, simplifies control strategies of the refrigerating system, strengthens the flexibility of the refrigerating system and ensures the functional reliability of the refrigerating system.

Description

technical field [0001] The present invention relates to the field of refrigeration and air conditioning, and in particular, to a control method and device for a refrigerant pump, and refrigeration equipment. Background technique [0002] In recent years, with the continuous development of Internet business scale and the rise of cloud computing, the energy consumption of data center computer rooms has gradually increased. Taking the United States as an example, in 2005, 1.2% of the electricity generated in the United States was used for the energy consumption of data center equipment rooms, which was more than double the power consumption of data center equipment rooms in 2000. In the electricity cost of data center equipment, the power consumption of air conditioners accounts for more than 50% of the total electricity. Therefore, how to reduce the air-conditioning energy consumption of the data center plays a crucial role in the energy-saving measures of the data center. T...

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Problems solved by technology

However, for the energy-saving air conditioner using the outdoor cold source in the diffuse horizontal air supply mode of the cabinet channel, it is controlled by the same method as the air conditioner, and it will be found that compared with the air conditioner, there is a problem of regulation lag, and it is difficult to achieve the effect of accurately controlling the indoor temperature.

[0004] Aiming at the problem of hysteresis in temperature control and adjustment based on the temperature difference between the indoor and outdoor units as the parameters of the power system of the refrigeration cycle in the related art, no effective solution has been proposed so far

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