Refrigeration equipment and shutdown control method of compressor of refrigeration equipment

Abstract

The invention provides refrigeration equipment and a shutdown control method of a compressor of the refrigeration equipment, and relates to the field of compressor control. According to the refrigeration equipment and the shutdown control method of the compressor of the refrigeration equipment, the shutdown stability of the compressor is improved, and the problem that noise is generated due to thefact that the compressor shakes when the compressor is shut down in a high-rotating-speed state can be solved. The refrigeration equipment comprises a compressor, a temperature detection device and acontrol device; the temperature detection device is used for detecting the temperature of a temperature control area of the refrigeration equipment; the control device is configured to control the compressor to be decelerated to a first preset rotating speed at a first preset acceleration if it is determined that the rotating speed of the compressor is greater than the first preset rotating speedwhen a shutdown instruction is received or the detection temperature of the temperature detection device reaches a set temperature; then the compressor is controlled to be decelerated to a preset shutdown rotating speed at a second preset acceleration; the second preset acceleration is smaller than the first preset acceleration; and the compressor is controlled to to stop after maintaining the target duration at the preset stop rotating speed.

Description

Technical field [0001] This application relates to the field of compressor control, and in particular to a refrigeration equipment and a method for controlling shutdown of a compressor of the refrigeration equipment. Background technique [0002] With the improvement of people's living standards, people have higher and higher requirements for the quality of life, especially in the use of electrical appliances, paying more and more attention to the feature of low noise. For refrigerators, air conditioners, and other refrigeration equipment that are cooled by compressors, their internal compressors will stop directly when their internal temperature reaches the set temperature. Because the compressor's movement is stopped at a high speed, there will be great rotational inertia. That is to say, the movement is in an unbalanced state. In this case, asynchronous movement between the movement and the compressor casing will occur, causing the compressor to shake and generate noise. In a...

AI Technical Summary

Problems solved by technology

For refrigeration equipment such as refrigerators and air conditioners that are refrigerated by compressors, the internal compressors will stop directly when the internal temperature reaches the set temperature. Since the core of the compressor stops at high speed, there will be a large rotational inertia. That is, the movement is in an unbalanced state. In this case, there will be asynchronous movement between the movement and the casing of the compressor, causing the compressor to vibrate, resulting in noise

In addition, in practice, in order to ensure the dynamic balance of the compressor during operation, a balance block will be installed on the crankshaft of the compressor to ensure the dynamic balance of the compressor core during operation, but the core stops from a high-speed state. At this time, the balance weight is eccentric (centrifugal), which will cause the instability of the movement, which also makes the compressor produce a large vibration when the compressor stops directly from high speed, and even the cylinder collision phenomenon caused by the collision between the movement and the shell, resulting in noise

In addition, refer to figure 1 As shown, in practice, the internal pipeline 100 of the compressor is artificially coiled, and the consistency of the pipeline 100 is poor. After the internal pipeline 100 is installed, the pipeline stress will cause the movement to be biased, making the movement of the compressor The distance between the casing and the casing is reduced, and vibration is generated at the moment the compressor stops, and even the movement and the casing collide with each other to cause a cylinder collision, resulting in noise

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