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A method for controlling the speed of a refrigerator condenser fan

A condenser fan and speed control technology, applied in refrigerator condenser fan speed control, refrigerator field, can solve the problems of condensing fan failure false alarm, high noise, high fan power consumption, etc., achieve timely response, reduce noise, and solve fault errors The effect of the alarm

Active Publication Date: 2020-08-07
CHANGHONG MEILING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The object of the present invention is to provide a method for controlling the speed of the condenser fan in a refrigerator. By collecting the operating power of the compressor and obtaining the adjustment parameters of the condenser fan according to the operating power of the compressor, the speed of the condenser fan can be controlled, which solves the problem of existing problems. Condenser fan has high power consumption, loud noise, and some condensing fan failure false alarms

Method used

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  • A method for controlling the speed of a refrigerator condenser fan
  • A method for controlling the speed of a refrigerator condenser fan
  • A method for controlling the speed of a refrigerator condenser fan

Examples

Experimental program
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Effect test

Embodiment 1

[0044] A refrigerator, including a compressor, a condenser fan, a control unit, and a compressor operation parameter acquisition module;

[0045] The compressor is an inverter compressor;

[0046] The main control board is integrated with a control unit and a compressor power acquisition module;

[0047] The control unit is respectively connected with the compressor power collection module, the condenser fan and the display board;

[0048] The compressor power collection module is electrically connected with the compressor.

[0049] A method for controlling the speed of a refrigerator condenser fan, comprising a condenser fan, a control unit, a compressor operation parameter acquisition module and a control unit, the control unit is electrically connected to the compressor operation parameter acquisition module and the condenser fan respectively, and the compressor operation parameters The acquisition module is electrically connected to the compressor;

[0050] The control ...

Embodiment 2

[0077] For example: when the refrigerator is powered on for the first time, the ambient temperature is 35 degrees, and the compressor runs at 3600rpm. At this time, due to the high temperature of the cabinet and the heavy load, the actual operating power of the compressor in the first half hour is about 138W (higher than the reference power)

[0078] Fan speed adjustment coefficient = 138 / 114 = 1.21, the actual execution adjustment coefficient is 1.15, then the fan speed is adjusted to 1.15*1060=1219rpm

[0079] If the ambient temperature is 12 degrees and the compressor runs at 1200rpm, the actual operating power of the compressor is about 32W, the fan speed adjustment coefficient is 32 / 38=0.84, and the actual execution adjustment coefficient is 0.8, then the fan speed is adjusted to 0.8*700= 560rpm

[0080] In practical applications, the operating power of the compressor is detected every 3 minutes, and the operating speed of the fan is determined according to the fan speed ...

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Abstract

The invention discloses a rotation speed control method for a refrigerator condenser fan and relates to the field of refrigeration equipment. The rotation speed control method for the refrigerator condenser fan comprises the steps that current running power of a compressor is collected through a compressor power collection module; a control unit compares the collected running power of the compressor with reference power to obtain a calculated adjustment coefficient eta i; an actual adjustment coefficient eta j corresponding to the calculated adjustment coefficient eta i is obtained according to a fan rotation speed adjusting coefficient mapping relation table; and the control unit controls and adjusts the rotation speed of the condenser fan according to the obtained actual adjustment coefficient eta j. According to the rotation speed control method, the adjustment parameter of the condenser fan is obtained through the comparison value of the running power of the compressor and the reference power, so that dynamic control over the rotation speed of the condenser fan is achieved, the problems that an existing condenser fan is high in power consumption and high in noise and speed adjustment is inaccurate and not timely correspondingly are solved, and compressor protection control can be carried out in time in case of abnormities of the condenser fan.

Description

technical field [0001] The invention belongs to the technical field of refrigeration equipment, and in particular relates to a refrigerator and a method for controlling the speed of a fan of a refrigerator condenser. Background technique [0002] With the continuous improvement of user needs, large-capacity refrigerators are becoming more and more popular among consumers. Large-volume refrigerators are generally equipped with a compressor and a condenser in the mechanical room at the bottom. In order to improve the heat exchange efficiency, the condenser is equipped with a heat dissipation fan and adopts forced convection heat exchange. Refrigerators are used in different environments, and the heat dissipation of the compressor and condenser is different under conditions such as the temperature inside the box. In order to meet different condensation and heat dissipation requirements, the condenser fan generally chooses a higher fixed speed. will increase to varying degrees....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25D29/00F25B49/02
CPCF25B49/027F25B2600/111F25D29/00
Inventor 马长州刘全义李子胜
Owner CHANGHONG MEILING CO LTD
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