Self-cleaning detection method of range hood based on DC motor drive

Abstract

The invention relates to a self-cleaning detection method for a range hood driven by a DC motor. The self-cleaning detection method considers that there are often differences in the DC motors configured by each range hood after leaving the factory. The ex-factory current value of the test range hood is used for quotient processing, and then the obtained quotient value is multiplied by the ex-factory current value corresponding to the ex-factory range hood, so that each self-cleaning reminder current value obtained is automatically Adapt to the need to judge the cleaning treatment of the range hood after leaving the factory, so as to avoid the idealization and inaccurate detection problems caused by the traditional method of ideally setting the same threshold for the cleaning conditions of different range hoods. In this way, the self-cleaning reminder current value obtained for the range hood after leaving the factory is more targeted and personalized, effectively solving the problem of inaccurate self-cleaning reminder detection for range hoods due to different DC motors .

Description

technical field

[0001] The invention relates to the field of range hoods, in particular to a self-cleaning detection method for range hoods driven by a DC motor. Background technique

[0002] In the current field of kitchen equipment, range hoods have increasingly become indispensable equipment and are accepted by the majority of users. A range hood with a DC motor is a range hood that is popular with users.

[0003] Due to the special working environment rich in soot in the kitchen where the range hood is located, a large amount of pollutants (mainly oil) will adhere to the range hood after running for a period of time, which seriously affects the working efficiency of the range hood.

[0004] In order to timely judge when the range hood needs cleaning reminders, there are currently three main methods for judging range hood cleaning reminders:

[0005] The first is to judge according to the running time of the fan in the range hood. When the running time of the fan is gre...

Examples

Embodiment Construction

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0036] see figure 1 As shown, this embodiment provides a self-cleaning detection method for a range hood driven by a DC motor. The self-cleaning detection method for a range hood includes the following steps 1 to 8:

[0037] Step 1, select N identical range hoods as test range hoods; wherein, N≥1; for example, select 10 identical range hoods in this embodiment, that is, set N=10;

[0038] Step 2, respectively obtain the direct-axis current values ​​corresponding to N sets of test range hoods operating in preset gears, and obtain N direct-axis current values; wherein, the i-th test range hood is in the preset The corresponding direct-axis current value during gear operation is marked as Id(i), 1≤i≤N; in addition, the term "direct-axis current" belongs to the common knowledge of those skilled in the art, and will not be repeated here;

[0039]...

technical field

[0001] The invention relates to the field of range hoods, in particular to a self-cleaning detection method for range hoods driven by a DC motor. Background technique

[0002] In the current field of kitchen equipment, range hoods have increasingly become indispensable equipment and are accepted by the majority of users. A range hood with a DC motor is a range hood that is popular with users.

[0003] Due to the special working environment rich in soot in the kitchen where the range hood is located, a large amount of pollutants (mainly oil) will adhere to the range hood after running for a period of time, which seriously affects the working efficiency of the range hood.

[0004] In order to timely judge when the range hood needs cleaning reminders, there are currently three main methods for judging range hood cleaning reminders:

[0005] The first is to judge according to the running time of the fan in the range hood. When the running time of the fan is gre...

Examples

Embodiment Construction

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0036] see figure 1 As shown, this embodiment provides a self-cleaning detection method for a range hood driven by a DC motor. The self-cleaning detection method for a range hood includes the following steps 1 to 8:

[0037] Step 1, select N identical range hoods as test range hoods; wherein, N≥1; for example, select 10 identical range hoods in this embodiment, that is, set N=10;

[0038] Step 2, respectively obtain the direct-axis current values ​​corresponding to N sets of test range hoods operating in preset gears, and obtain N direct-axis current values; wherein, the i-th test range hood is in the preset The corresponding direct-axis current value during gear operation is marked as Id(i), 1≤i≤N; in addition, the term "direct-axis current" belongs to the common knowledge of those skilled in the art, and will not be repeated here;

[0039]...

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