Driving control method and device for cooking utensil and ultrasonic vibrator
A technology of ultrasonic waves and vibrators, which is applied in the field of drive control of cooking utensils and ultrasonic vibrators. It can solve the problems of reduced product life, damage to transducer elements, and failure to detect the working status of ultrasonic transducers, so as to prolong product life and reduce damage. Effect
Active Publication Date: 2021-07-20
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
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Problems solved by technology
[0004] However, the ultrasonic vibrator driving technology in the related art is to input a fixed frequency AC signal to the input end of the ultrasonic vibrator LC resonant circuit to control the operation of the ultrasonic vibrator, without detecting the working state of the ultrasonic transducer, because the ultrasonic vibrator is in the process of vibrating. Affected by conditions such as temperature, pressure, and load changes, changes in the electrical parameters of the ultrasonic vibrator will cause the natural frequency of the ultrasonic vibrator to drift. This drift will easily lead to an increase in the reactance component of the circuit, an increase in reactive power, and a further increase in temperature. Transducer elements are prone to damage, reducing product life
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[0036]Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0037] The driving control method and device for a cooking appliance and an ultrasonic vibrator according to an embodiment of the present invention will be described below with reference to the accompanying drawings.
[0038] figure 1 It is a flow chart of the driving control method of the ultrasonic vibrator according to the embodiment of the present invention.
[0039] Such as figure 2 As shown, the driving control circuit of the ultrasonic vibrator involved in the driving control method of the ultrasonic vibrator according t...
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The invention discloses a cooking appliance and a drive control method and device for an ultrasonic vibrator, wherein the method includes: obtaining the current of a resonant circuit where the ultrasonic vibrator is located; and adjusting the frequency of an AC control signal input to the resonant circuit according to the current. Therefore, by obtaining the current of the resonant circuit where the ultrasonic vibrator is located, the PWM output frequency is adjusted according to the current, so that the ultrasonic transducer works in the best state, effectively reduces the damage of the transducer element, and prolongs the product life.
Description
technical field [0001] The invention relates to the technical field of household electrical appliances, in particular to a cooking appliance and a driving control method and device for an ultrasonic vibrator. Background technique [0002] Due to the high pressure in the pot when the pressure cooker is cooking, the food cannot be rolled over, so that the food cannot be rolled over, and nutrients are difficult to separate out, resulting in light porridge soup with poor taste. [0003] In the related technology, by placing the vibrator rod of the ultrasonic transducer in the water in the pot, when the ultrasonic vibrator vibrates, the water molecules in the pot will be mechanically vibrated at high frequency and transmitted to the food to decompose the food nutrients. Among them, the ultrasonic vibrator transducer is an important core component of ultrasonic pressure cooking. The ultrasonic vibrator is generally made of piezoelectric materials, and its electrical characteristic...
Claims
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IPC IPC(8): A47J27/08A47J36/00
CPCA47J27/0802A47J36/00
Inventor 曾露添雷俊梅若愚王志锋
Owner FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD