Motor switching circuit of full automatic coffee machine

Abstract

The invention discloses a motor switching circuit of a full automatic coffee machine. The motor switching circuit of the full automatic coffee machine comprises a master control module, a motor forward rotation control module, a motor reverse rotation control module and a motor selection control device. The motor selection control module comprises a third single-pole double-throw electromagnetic switch, wherein the third single-pole double-throw electromagnetic switch comprises a third fixed end, a fifth contact and a sixth contact, the fifth contact is electrically connected with a first end of a first motor, and the sixth contact is electrically connected with a first end of a second motor. The motor forward rotation control module comprises a first single-pole double-throw electromagnetic switch, wherein a fixed end of the first single-pole double-throw electromagnetic switch is respectively electrically connected with a second end of the first motor and a second end of the second motor. The motor reverse rotation control module comprises a second single-pole double-throw electromagnetic switch, wherein a fixed end of the second single-pole double-throw electromagnetic switch is connected with the third fixed end. The motor switching circuit of the full automatic coffee machine uses three relays to control forward rotation and reverse rotation of two motors, saves cost and reduces energy consumption.

Description

technical field [0001] The invention relates to a motor switching circuit of a fully automatic coffee machine. Background technique [0002] Generally, fully automatic coffee machines have the functions of pressing, discharging coffee powder and controlling water flow. These two functions are usually realized by controlling the forward rotation and reverse rotation of two motors, and each motor needs two relays to control the motor. Switching between forward rotation and reverse rotation requires four relays to control two motors, which not only increases the design cost of the power supply, but also increases energy consumption. Contents of the invention [0003] The technical problem mainly solved by the present invention is to provide a motor switching circuit of a fully automatic coffee machine, which can use three relays to control the forward rotation and reverse rotation of two motors, thereby saving costs and reducing energy consumption. [0004] In order to solve...

AI Technical Summary

Problems solved by technology

[0002] Generally, fully automatic coffee machines have the functions of pressing, discharging coffee powder and controlling water flow. These two functions are usually realized by controlling the forward rotation and reverse rotation of two motors, and each motor needs two relays to control the motor. Switch between forward rotation and reverse rotation, so two motors need four relays to control, which not only increases the design cost of the power supply, but also increases the energy consumption

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