Safety device of food processor and control module thereof

Abstract

The present invention provides a safety device of food processor, which comprises: an agitator; a motor; a control module, which includes a driver for receiving a sinusoidal AC input voltage and a trigger signal, and generating a driving voltage according to the trigger signal and the input power; and a phase controller electrically connected between the driver and the motor, and comprises a detecting unit for detecting the rotational speed of the motor to obtain an actual rotational speed; a subtraction unit for receiving the actual rotational speed and a target rotational speed, and performing a subtraction based on the target rotational speed and the actual rotational speed to obtain a rotational speed difference; a proportional integrating unit for receiving the rotational speed difference, and performing the proportional integrating operation on the rotational speed difference to obtain a phase variance with nonlinear fluctuation, and generate the trigger signal according to the phase variance.

Description

technical field [0001] The invention relates to a device and a module, in particular to a food cooking machine safety device, a control module and a phase controller. Background technique [0002] With the development of technology, modern people often use motors to complete some strenuous work when cooking food; for example, various blenders are suitable for different application requirements such as boiling soup or making juice. example. However, if the mixer contains high-temperature fluid objects, when the user inadvertently increases the operating speed of the mixer suddenly, the high-temperature fluid objects may be scattered and splashed, causing danger. [0003] Moreover, the existing control module (not shown in the figure) is used to adjust the driving voltage for driving the motor with a fixed variation, which has the following disadvantages: [0004] 1. The response is slow, when the load increases, it cannot respond immediately. [0005] 2. When the motor is ...

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Problems solved by technology

[0004] 1. The response is slow, when the load increases, it cannot respond immediately

[0005] 2. When the motor is operating at low speed, if it changes from no-load state to load state, the motor speed will change unstable and not smooth. Even if the load is too large, such as adding some difficult-to-stir food, the motor may stop rotating

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