a food processor

Abstract

An embodiment of the invention discloses a food processor. The food processor is characterized in that the food processor comprises a main control unit and a first heating circuit, wherein the first heating circuit comprises a first heating device and a sampling resistance which are connected with a power supply in series; the main control unit samples current and voltage values of the first heating device during operation through the sampling resistance; the food processor further comprises a second heating device with positive temperature coefficient PTC; the main control unit is also used for collecting current and voltage values of the second heating device during heating through the sampling resistance; the temperature of a cup body at the location of the second heating device is detected according to the collected current and voltage values; pulping process is regulated, and / or slurry state is detected according to the detected cup temperature. The food processor has the advantages of achieving multiple functions such as cup temperature detection, accurate detection of water level, power-down memory and small power constant temperature detection according to the scheme of the embodiment and based on the application of the heating device with the positive temperature coefficient PTC, and improving pulping effects.

Description

technical field [0001] The embodiment of the present invention relates to cooking equipment control technology, especially to a food processing machine. Background technique [0002] Existing food processors on the market (such as soybean milk machines) generally use a heating tube for heating, and the minimum heating power will be above 700W. Most of them choose 1000W, and it is difficult to obtain a small and uniform heating power. [0003] The reasons are as follows: Relays and SCRs are generally used for the control of resistive loads: [0004] 1) It is difficult for the relay to achieve continuous fast switching, so it is difficult to reduce the power, even if the average power requirement is achieved by controlling the on and off time, but the heat release of the heating tube is uneven, which will cause slurry The paste at the bottom and the sudden change in pulp temperature are also difficult to guarantee a good taste; [0005] 2) The most common way is to control t...

AI Technical Summary

Problems solved by technology

[0004] 1) It is difficult for the relay to achieve continuous fast switching, so it is difficult to reduce the power, even if the average power requirement is achieved by controlling the on and off time, but the heat release of the heating tube is uneven, which will cause slurry The paste at the bottom and the sudden change in pulp temperature are also difficult to guarantee a good taste;

[0005] 2) The most common way is to control the silicon controlled rectifier and reduce the power by dropping waves. However, when the power is less than 1 / 4 of the rated power in this way, it is difficult to pass the national safety certification, and the heating power at this time is also start to get uneven

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