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System and method for controlling rotating speed of variable-frequency compressor

A variable frequency compressor and rotational speed control technology, which is applied in pump control, liquid variable capacity machinery, mechanical equipment, etc., can solve the problems of poor noise in refrigerators, achieve the effect of eliminating errors, eliminating abnormal noise, and improving experience

Inactive Publication Date: 2020-12-29
JIAXIPERA COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention mainly solves the problem that the compressors of the existing refrigerators operate at a preset specific economic speed, and the noise performance of individual refrigerators is poor due to the differences between refrigerator parts and compressor parts. Inverter compressor speed control system and method for adjusting the speed of the compressor according to the noise to reduce the noise generated by the operation of the refrigerator

Method used

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  • System and method for controlling rotating speed of variable-frequency compressor
  • System and method for controlling rotating speed of variable-frequency compressor

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Embodiment 1

[0029] In this embodiment, a variable frequency compressor speed control system, such as figure 1 As shown, it includes a control box 1 and a controller, the control box is arranged on the compressor 2, the control box is provided with a sound sensor, the controller is respectively connected to the sound sensor and the compressor, the control box is provided with a sound transmission hole 3, and the controller Set in the control box.

[0030] The sound sensor collects the sound of the frequency conversion compressor running in the refrigerator at each speed range, and the controller selects the speed at which the sound is the smallest in each speed range as the optimal operating speed of the compressor in this speed range. During operation, the controller controls the compressor to run at the optimum speed in this speed range, effectively avoiding the abnormal noise of the refrigerator and eliminating the abnormal noise caused by the difference of each compressor.

[0031] Co...

Embodiment 2

[0041] Compared with Embodiment 1, this embodiment is different in that the speed control system of the variable frequency compressor is different. The speed control system of the variable frequency compressor includes a refrigerator main control board and a sound sensor, and the refrigerator main control board is respectively connected with the sound sensor and the compressor.

Embodiment 3

[0043] In this embodiment, a method for controlling the speed of an inverter compressor includes the following steps:

[0044] S1: After the refrigerator is turned on, it is judged whether the acquisition of the best rotational speed of all rotational speed segments is completed, if not, proceed to step S11, and if so, proceed to step S2;

[0045] S11: given compressor speed segment;

[0046] S12: make the compressor run in a given speed range by sweeping up the speed and obtain the noise generated by the operation of the refrigerator in real time, and at the same time establish the corresponding relationship between the speed of the compressor and the noise generated by the equipment including the compressor;

[0047] S13: Select the compressor speed when the noise is the least to be the best speed in the given speed range;

[0048] S2: Determine the rotational speed segment of the compressor according to the ambient temperature and load, and obtain the optimal rotational sp...

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Abstract

The invention relates to a system and a method for controlling rotating speed of a variable-frequency compressor. The system comprises a control box and a controller, wherein the control box is arranged on the compressor, a sound sensor is arranged in the control box, and the controller is connected to the sound sensor and the compressor, separately. The system can further comprise a refrigeratormain control panel and a sound sensor, wherein the refrigerator main control panel is connected to the sound sensor and the compressor. The method comprises the steps of judging whether the optimum rotating speeds of all rotating speed sections are obtained or not, if not, obtaining the optimum rotating speed, and if yes, entering the next step; determining the rotating speed section in operationof the compressor; and setting a target rotating speed of the compressor as the optimum rotating speed of the rotating speed section. The system and method have the advantages that the optimum operating rotating speed of the compressor in each rotating speed section is determined by recording the operating sound of the variable-frequency compressor in the refrigerator in each rotating speed section, so that it is ensured that the refrigerator operates at the optimum rotating speed in each rotating speed, and therefore, abnormal noises are avoided, noise abnormality due to individual differenceis eliminated, and errors caused by empirical determination of the rotating speed are eliminated.

Description

technical field [0001] The invention relates to the field of compressor control, in particular to a system and method for controlling the rotational speed of an inverter compressor. Background technique [0002] With the improvement of the consumption level of residents in today's society, the noise requirements for refrigerators are becoming more and more stringent. At present, the proportion of refrigerators using inverter compressors is increasing. Refrigerator designers can use experience to make compressors operate at a certain economic speed However, the noise performance of each refrigerator in the customer's home is still not exactly the same. This is caused by the differences in refrigerator parts and compressor parts. Resonance leads to increased noise and brings bad user experience to customers. Consumers would welcome it if each refrigerator could find its own optimum rotational speed and avoid abnormal noise. Contents of the invention [0003] The present in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/06F04B49/20
CPCF04B49/06F04B49/20
Inventor 储呈国武守飞陆龙泉
Owner JIAXIPERA COMPRESSOR
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