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Electric device, washing machine containing electric device and driving and braking method thereof

An electric device, washing machine technology, applied to electromechanical devices, other washing machines, washing devices, etc., can solve the problems of power consumption, power consumption defects, time-consuming drum washing machines, etc., and achieve the effect of simple structure and low cost

Inactive Publication Date: 2016-10-05
NANJING MENGQI INTELLIGENT TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The drum washing machine has the disadvantages of time-consuming and power consumption, which is generally acceptable to consumers (the laundry process is generally more than one hour, and the pulsator washing machine is about 40 minutes), but power consumption is an obvious defect, although the use of frequency conversion technology can alleviate its consumption. The disadvantage of electricity, but it is an indisputable fact that drum washing machines consume more power than other types of washing machines

Method used

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  • Electric device, washing machine containing electric device and driving and braking method thereof
  • Electric device, washing machine containing electric device and driving and braking method thereof
  • Electric device, washing machine containing electric device and driving and braking method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] A power-saving pulsator type washing machine, the horizontal section of the frame 4 is a square with a side length of 450 mm and a height of 550 mm, and a rotary drum 5 with a circumference of 1000 mm and a height of 400 mm is selected, and the raised ribs at the bottom of the rotary drum are aligned with the conventional wave. The design of the wheel washing machine is similar; the electric device is designed as a combination of 12 rotor units 3b and 4 stator units 3a, and its structure is shown as Figure 9 Brief description: The washing machine is connected to a household 220V AC power supply, which is changed to a 48V DC power supply through a conventional transformer / rectifier device, which first meets the design requirements of safety first for household appliances.

[0083] The rotor unit is made of high-quality magnetic steel, processed into a small unit with a thickness of 2mm, a length and a width of 25mm, and the 12 permanent magnet rotor units are processed i...

Embodiment 2

[0094] On the basis of Embodiment 1, the power-on program of the power supply modulator is optimized: the T 1 The power-on time domain is set to 5 stages of current with the same power-on time but the current intensity decreases regularly, and the power-on intensity of the 5 stages is according to K*I 1 The linear relationship of / A decreases step by step, and the decrease coefficient K is 0.8, that is, T 1 The five-stage current intensity set in the power-on time domain is 25A, 20.0A, 16.0A, 12.8A, and 10.24A, respectively. The material of the rotor unit 3b is changed to conventional NdFeB.

[0095] The rest is similar to that of Embodiment 1. This embodiment can reduce the heat accumulation of the electric device, and the power saving effect is relatively good.

Embodiment 3

[0097] Change the amplitude of the pulse subset in embodiment 2 to be continuously decreasing, that is, the power modulator corresponds to T 1 When the starting current is 26A, the amplitude envelope trend in the power-on time domain is The law of decreasing, where is the dynamic angle formed by the rotor unit around the axis and the normal determined by the axis and the stator unit and the normal determined by the axis, Determined by the coincidence of the tangential direction of the rotor unit around the axis and the direction of the electromagnetic force it receives value.

[0098] In order to improve the working reliability of position signal sensing, this embodiment sets two sensing units.

[0099] In this embodiment, because the envelope of the pulse subset output by the power modulator 1 selects a more optimal time sequence decreasing relationship, the power saving effect of the washing machine is better than that of the embodiment 2.

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Abstract

The invention discloses an electric device and a washing machine containing the electric device. The electric device comprises a power supply modulator, a stator unit and a rotor unit. More than one rotor unit group is arranged on a rotary drum of the washing machine. Each rotor unit group comprises at least four rotor units arranged at intervals. The material of the rotor unit comprises permanent magnets or magnetizers or combination of the above. Multiple permanent magnet rotor units are arranged around a rotary drum in the same magnetic pole direction. The stator unit at least is installed on a frame fixation part. The periodic relative air gap formed by the stator unit and the rotor unit is no greater than 80 mm. The power supply modulator is used for supplying power to a winding in the stator unit in order to form a magnetic pole direction which is opposite to the polarity opposite to the motion direction of the permanent magnet rotor units. The power supply modulator outputs corresponding time sequence current to a winding of the stator unit such that drive / brake of the electric device is achieved. The washing machine is at least provided with one set of electric devices.

Description

technical field [0001] The invention relates to the field of electric design of a washing machine, in particular to a structure of an electric device of a washing machine, a power modulation method, and a method for driving and braking the electric device of the washing machine. Background technique [0002] Washing machines are household appliances that affect millions of households. Energy saving and emission reduction are of great significance. It is estimated that there are at least 200 million washing machines in my country. If each machine uses 1 kWh less electricity per month, 2.4 billion kWh of electricity can be saved every year. At present, the washing machines in the Chinese market mainly include drum washing machines and pulsator washing machines, both of which have their own advantages and disadvantages. [0003] The drum washing machine originated in Europe. The washing method is designed to imitate the principle of hitting the clothes with a hammer. The mechan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06F37/30D06F39/00H02K16/00H02K1/27H02K11/00H02K3/28
Inventor 刘粤荣刘通
Owner NANJING MENGQI INTELLIGENT TECH
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