Soft ice cream machine with the frequency conversion control function

Abstract

The present invention discloses a soft ice cream machine with the control function of frequency conversion; the present invention comprises a power interface, a mixing motor, a mixer, a refrigeration motor, a refrigeration device and a first frequency conversion control; the power output of the mixing motor drives the mixer to provide power for the refrigeration motor through the power interface; the refrigeration motor provides power for the refrigeration device; the mixing motor is a three-phase squirrel-cage asynchronous motor; the power interface is connected with the first frequency conversion control and the output of frequency conversion of the first frequency conversion control controls the a three-phase squirrel-cage asynchronous motor. The present invention provides a soft ice cream machine equipped with the driving function of frequency conversion; in the process of mixing paste, the soft ice cream machine has little noise and is convenient for timing; the starting torque is stable with high efficiency and the paste of ice cream is homogeneous.

Description

technical field [0001] The invention relates to a food machine, in particular to a soft ice cream machine. Background technique [0002] The soft ice cream machine mainly includes a power device, a stirring device and a refrigeration device, and the power device is used to provide power for the stirring device and the refrigeration device of the soft ice cream machine. At present, most of the soft ice cream machines used in the market use single-phase power as the power supply, and the motors that output power generally use single-phase dual-value capacitor asynchronous motors (such as YL90S4-1.1KW). As shown in Figure 3, it is an internal wiring method of a single-phase double-value capacitor asynchronous motor, including a main winding U1-U2, an auxiliary winding Z1-Z2, a starting capacitor C1 (150uF / 275V), a running Capacitor C2 (35uF / 400V) and a centrifugal switch V1-V2, the U2 end of the main winding and the Z2 end of the auxiliary winding are connected in parallel; th...

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Problems solved by technology

[0004] 1. Due to the defects in the manufacturing process of this type of motor, for example, the shaft of the motor will shake up and down intermittently along the radial direction, and it is easy to generate a magnetic gap. When working, the current is large and the noise is also large. It is difficult to start and stop frequently when making cakes.

[0005] 2. When the powder-slurry mixture is made into a cake shape, due to the large current, the contacts of the centrifugal switch of the motor are easily damaged by arc ablation, causing the starting capacitor and running capacitor to be burned, resulting in damage to the motor

[0006] 3. Due to the high speed of the single-phase motor, the unbalanced load torque, the low energy efficiency of the motor, and the inability to adjust the speed, this will cause the colloid in the mixed slurry to be easily crushed, so that the adhesion of the finished cake body is not enough, and the adhesion is broken. layers, the cake body does not hold enough time for forming, and the appearance is not beautiful

[0007] 4. Since the drive of the traditional refrigeration compressor uses a fixed-speed compressor to start under full pressure, the current is very large, usually 4-6 times the rated operating current, which will have a great impact on the grid circuit where it is located; in addition That is, single-phase motors have high noise, low work efficiency, and high power consumption per unit output.

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