Miele & Cie has filed a patent for a method of executing a spin program for a cleaning appliance with a non-ribbed drum. The method involves supplying motion signals to the appliance’s drive interface to achieve specific rotational speeds in different directions, ultimately reaching a predetermined maximum rotational speed. The drum then executes a final rotational motion at this maximum speed. GlobalData’s report on Miele & Cie gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on Miele & Cie, Smart home appliances was a key innovation area identified from patents. Miele & Cie's grant share as of September 2023 was 48%. Grant share is based on the ratio of number of grants to total number of patents.
Method for executing a spin program for a cleaning appliance
A recently filed patent (Publication Number: US20230287618A1) describes a method for executing a spin program for a cleaning appliance with a rotatable non-ribbed drum for holding textiles. The method involves several steps to achieve specific rotational speeds and directions of the drum.
The method begins by supplying a first motion signal to the drive interface of the cleaning appliance, causing the drum to rotate in a first direction until it reaches a first target rotational speed. Then, a second motion signal is supplied to the drive interface, causing the drum to rotate in the opposite direction until it reaches a second target rotational speed higher than the first. This process is repeated with further first and second motion signals, each time increasing the target rotational speed. The repetition continues until a predetermined maximum rotational speed is reached.
Once the maximum rotational speed is achieved, a third motion signal is supplied to the drive interface, causing the drum to rotate at the maximum speed in the same direction as the previous steps.
The patent also mentions a step of calculating the maximum rotational speed using a predetermined g-factor, the drum radius value, and the gravitational constant.
Additionally, the method involves supplying the second, further first, and further second motion signals for a predetermined period of time, corresponding to half the period duration of a rocking frequency. The rocking frequency is determined using the drum radius value and can be increased by a predetermined factor.
The first, second, further first, and further second motion signals cause a constant acceleration of the drum, with each signal causing a greater acceleration than the previous one.
The patent also includes claims for a control unit configured to execute the method and a non-transitory computer-readable medium with program code for executing the method.
Furthermore, the patent describes a cleaning appliance with a rotatable non-ribbed drum, a drive for the drum, and a control unit capable of executing the method.
In summary, the patent presents a method for achieving specific rotational speeds and directions of a cleaning appliance's drum, along with calculations for determining the maximum rotational speed and the rocking frequency. The method involves supplying motion signals to the drive interface and repeating the process until the maximum speed is reached. The patent also includes claims for a control unit and a computer-readable medium with program code for executing the method.
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