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A method for controlling the rotating speed of a refrigerator and its fan

A control method and fan speed technology, applied in household refrigerators, household refrigeration devices, lighting and heating equipment, etc., can solve the problems of manpower and time cost, affecting product production efficiency, poor fan compatibility, etc.

Active Publication Date: 2018-03-30
HISENSE RONSHEN GUANGDONG REFRIGERATOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It can be seen that the existing control method has poor compatibility with different fans, resulting in the need to invest manpower and time costs to upgrade the control software when replacing different fans, which affects product production efficiency

Method used

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  • A method for controlling the rotating speed of a refrigerator and its fan
  • A method for controlling the rotating speed of a refrigerator and its fan
  • A method for controlling the rotating speed of a refrigerator and its fan

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] Embodiments of the present invention provide a method for controlling fan speed, referring to figure 2 shown, including the following steps:

[0034] 201. After the fan of the refrigerator is powered on, measure and obtain the measured characteristic parameters of the fan.

[0035] The measured characteristic parameters include K group values ​​(A i , B i ), K≥1, 1≤i≤K, K and i are both integers.

[0036] Among them, A iis the driving parameter, and the driving parameter can specifically be the driving voltage of the fan or other quantities that reflect the driving force on the fan. is the duty cycle of the PWM signal, and when the speed of the fan is adjusted through the frequency of the control signal, the driving parameter may be the frequency of the control signal.

[0037] B i In accordance with the driving parameters A i When the fan is driven, the frequency of the feedback signal output by the fan is referred to as the feedback frequency hereinafter.

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PUM

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Abstract

The embodiment of the invention provides a refrigerator and a control method for the rotation speed of a fan of the refrigerator, and relates to the field of household appliances. The compatibility of the refrigerator to different fans can be improved. According to the specific scheme, measured characteristic parameters of the fan are measured after the fan is powered on; standard characteristic parameters matched with the measured characteristic parameters are determined by inquiring a preset matching table, and then a target frequency corresponding to the standard characteristic parameters is determined; the matching table comprises standard characteristic parameters of T types of fans and target frequencies corresponding to the T types of fans, and T is greater than or equal to 2; and the drive parameters of the fan are adjusted, so that the frequency of feedback signals outputted by the fan is maintained at the target frequency. The method is used for manufacturing of refrigerators.

Description

technical field [0001] The invention relates to the field of household appliances, in particular to a method for controlling the rotational speed of a refrigerator and a fan thereof. Background technique [0002] The fan is an important part of the air-cooled frost-free refrigerator. The cooling energy on the evaporator is transmitted to each room in the refrigerator through the fan to ensure the frost-free operation of the refrigerator. An existing fan structure such as figure 1 As shown, it includes fan blade 1 , motor 2 , power supply positive wire 3 , ground wire 4 and feedback signal wire 5 . The motor 2 rotates once to generate a fixed number of pulse signals, and the frequency of the output pulse signals is different at different speeds. The pulse signal is sent as a speed feedback signal to the controller of the refrigerator through the feedback signal line 5, and the controller adjusts the driving voltage of the fan according to the feedback signal to achieve the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25D29/00F25D11/00
CPCF25D11/00F25D29/003Y02B40/00
Inventor 龙晓芬刘小锋陈星
Owner HISENSE RONSHEN GUANGDONG REFRIGERATOR