Control method for rack-mounted variable-frequency air conditioner and rack-mounted variable-frequency air conditioner

Abstract

The invention relates to a control method for a rack-mounted variable-frequency air conditioner. The control method comprises the following steps that: return air temperature is sampled; set temperature is sampled; real-time temperature difference is calculated; a set compressor operation frequency is obtained based on the real-time temperature difference; whether the operation frequency is the minimum operating frequency of a compressor is judged; if the operation frequency is the minimum operating frequency of the compressor, whether the real-time temperature difference belongs to a temperature difference intervention interval or not is judged; if the operation frequency is not the minimum operating frequency of the compressor, the compressor operates according to the set compressor operation frequency; if the real-time temperature difference belongs to the temperature difference intervention interval, an indoor draught fan and / or an outdoor draught fan are / is controlled to work at an intervention rotation speed smaller than the set rotating speed of the indoor draught fan and / or the outdoor draught fan; and if the real-time temperature difference does not belong to the temperature difference intervention interval, the compressor is controlled to stop. The invention further discloses a rack-mounted type variable frequency air conditioner. According to the control method and the rack-mounted variable-frequency air conditioner, real-time temperature difference is monitored, the compressor is automatically controlled to operate within a reasonable frequency range, so that refrigerating capacity output is matched with the heating capacity of main equipment, and therefore, temperature fluctuation caused by the frequent starting of the compressor is avoided, and a refrigerating system is dynamically optimal while energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of air conditioning equipment, in particular to a control method for a rack-type variable frequency air conditioner and a rack-type variable frequency air conditioner. Background technique [0002] In recent years, as cloud computing has penetrated into all walks of life, many enterprises will build a small information node computer room nearby in order to support network access. This has greatly promoted the development of intelligent computer room products. The heat generated in the cabinet is large, and the rack-type inverter air conditioner is usually designed to cool the internal environment of the cabinet through internal circulation. The rack-type inverter air conditioner is usually integrated with the main equipment inside the cabinet as an independent system, and its indoor unit can be installed at the bottom of the cabinet. Automatically adjusts to changes in the thermal load within the cabinet. ...

AI Technical Summary

Problems solved by technology

This may cause the minimum cooling capacity of the rack-mounted air conditioner to still be greater than the heat generated by the server. In this case, the compressor will start and stop frequently, resulting in large temperature fluctuations in the cabinet and affecting the reliability of the main equipment.

On the other hand, it may happen that the air conditioner operates at high frequency and the heat dissipation of the main equipment is small, which will also increase energy consumption and reduce the overall efficiency of the rack air conditioner

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