Soya-bean milk making machine circuit

Abstract

The invention discloses a soymilk machine circuit. The soymilk circuit comprises a controlling unit, an executive unit and a power unit. The controlling unit comprises a central processing chip; the executive unit comprises a motor, an electric heating device, a first switch connected in series with the electric heating device, and a first relay and a first relay controlling circuit for controlling the on and off of the first switch, wherein, the first relay controlling circuit is connected with the central processing chip. The soymilk machine circuit is characterized in that: the first relay controlling circuit comprises at least two triodes in series connection and the triodes in series connection are connected with the first relay. Compared with the prior art, the soymilk machine circuit improves the first relay controlling circuit: at least two triodes in series connection are arranged, therefore, only the short circuit happening on the triodes can result in the malfunction of the soymilk machine and the reliability of the performance of the soymilk machine is further improved.

Description

technical field [0001] The invention relates to a soybean milk machine circuit, in particular to a control circuit for an electric heating device of a soybean milk machine. Background technique [0002] The heating device of the soybean milk machine sold on the market is realized by the central processing chip through the relay and its control circuit. Since the current relay control circuit has only one triode, the triode often has a short circuit, which leads to the malfunction of the soymilk machine and unreliable performance of the soymilk machine; in addition, because the central processing chip only outputs simple high and low levels To control the electric heating device, so the control process is unreliable. For example, when the relay control pin of the central processing chip is always at high level due to reasons such as the central processing chip crash or water ingress, the heating device keeps heating and causes accidents. Contents of the invention [0003] ...

AI Technical Summary

Problems solved by technology

Since the current relay control circuit has only one triode, the triode often has a short circuit, which leads to the malfunction of the soymilk machine and unreliable performance of the soymilk machine; in addition, because the central processing chip only outputs simple high and low levels To control the electric heating device, so the control process is unreliable. For example, when the relay control pin of the central processing chip is always at a high level due to reasons such as a central processing chip crash or water ingress, the heating device continues to heat and cause accidents.

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