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Method and device for automatic identification of DC fan type

A DC fan, automatic identification technology, applied in the direction of machine/engine, mechanical equipment, pump control, etc., can solve the problems of high cost of gas water heater, increased hardware circuit cost of main controller, and increased after-sales service cost.

Active Publication Date: 2018-07-31
GUANGDONG WANHE THERMAL ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when using different types of DC fans from different suppliers, selecting the DC fan provided by one of the suppliers by manually operating the DIP switch or pressing buttons will increase the cost of the hardware circuit of the main controller And reduce the reliability of the product, resulting in an increase in the manufacturing cost of gas water heaters and an increase in after-sales service costs
In addition, if only a single type of DC fan provided by a single supplier is used, the cost of the gas water heater will be higher due to the supplier increasing the price of the DC fan

Method used

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  • Method and device for automatic identification of DC fan type
  • Method and device for automatic identification of DC fan type
  • Method and device for automatic identification of DC fan type

Examples

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Embodiment Construction

[0049] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0050] like figure 1 As shown, an automatic identification method of a DC blower type in a preferred embodiment of the present invention includes steps:

[0051] S11, after the power supply system of the DC fan is powered on, determine whether the PWM signal terminal of the motor chip of the DC fan receives a PWM signal;

[0052] S12, when it is judged that the PWM signal end of the DC fan has not received the PWM signal,

[0053] Obtain a preset frequency signal output by the FG signal terminal of the motor chip of the DC fan;

[0054] S13. Determine the type of the DC fan according to the frequency value of the preset frequency signal output by the FG signal terminal ...

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Abstract

The invention relates to the technical field of direct current blowers, and discloses an automatic recognition method and device for a direct current blower type. The automatic recognition method of the direct current blower comprises the steps that after a power supply system of the direct current blower is electrified, a preset frequency signal output from an FG signal end of an electromotor chip of the direct current blower is acquired when a PWM signal is not received from a PWM signal end of the direct current blower, and the type of the direct current blower is judged according to the frequency of the preset frequency signal output from the FG signal end of the electromotor chip of the direct current blower, so that the phenomenon that one type of the direct current blower is selected by manually operating a dial switch or making a key option is avoided, thereby reducing the hardware circuit cost of a main controller of a gas water heater and improving the reliability of the gas water heater, and reducing the manufacturing cost and after-sale service cost of the gas water heater. In addition, by the automatic recognition method of the direct current blower, the gas water heater can use different types of direct current blowers supplied by different suppliers, so that the cost of the gas water heater is reduced.

Description

technical field [0001] The invention relates to the technical field of DC fans, in particular to an automatic identification method and device for the type of DC fans. Background technique [0002] At present, the existing gas water heaters of the same model or series generally only use a single type of DC fan provided by a single supplier. When using different types of DC fans provided by different suppliers, it is necessary to manually operate the dial switch or carry out Press the button to select the DC fan provided by one of the suppliers, so as to send a corresponding signal to the main controller of the gas water heater, so that the main controller of the gas water heater knows which supplier of the DC fan is currently used. [0003] However, when using different types of DC fans from different suppliers, selecting the DC fan provided by one of the suppliers by manually operating the DIP switch or pressing buttons will increase the cost of the hardware circuit of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D27/00
CPCF04D27/00
Inventor 卢楚鹏杨志杰
Owner GUANGDONG WANHE THERMAL ENERGY TECH CO LTD
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