CN110485110B - Method for increasing dehydration rotation speed of variable-frequency pulsator washing machine - Google Patents

Abstract

The invention discloses a speed increasing method for the dehydration rotation speed of a variable-frequency pulsator washing machine, and relates to the technical field of washing machines. The invention comprises the following steps: set target rotational speed rpm₁At an acceleration of α₁Operation t₁Time; step two:set target rotational speed rpm₂At an acceleration of α₂Operation t₂Time; step three: set target rotational speed rpm₃At an acceleration of α₁Operation t₁Time; step four: repeating the second step; step five: circularly executing the step three and the step four for a plurality of times; step six: repeating the third step; step seven: set target rotational speed rpm₄At an acceleration of α₃Operation t₃Time; step eight: set target rotational speed rpm₅At an acceleration of α₄Operation t₄Time; step nine: at an acceleration of alpha₅The operation is carried out to the rotating speed rpm and the operation is maintained until the dehydration is finished. According to the invention, through repeated acceleration and deceleration processes, the rotary barrel rapidly reaches a dynamic balance state, and then through twice acceleration processes, the final dehydration effect is realized, and the problems that the clothes in the conventional rotary barrel are easy to be eccentric, too much vibration is caused, and the dehydration effect is influenced are solved.

Description

Method for increasing dehydration rotation speed of variable-frequency pulsator washing machine

Technical Field

The invention belongs to the technical field of washing machines, and particularly relates to a speed increasing method for the dehydration rotation speed of a variable-frequency pulsator washing machine.

Background

At present, the national requirements on energy consumption of household electrical appliance products are higher and higher, and the use of a variable frequency motor is an effective way for improving the energy efficiency grade of a washing machine, and simultaneously, the noise value of the washing machine during dehydration can be reduced.

The existing frequency conversion washing machine generally adopts a step-type speed-up mode during dewatering: the target rotating speeds in different stages are set, after the target rotating speed is reached, the rotating barrel is maintained for a period of time, and then the rotating barrel is accelerated to the next target rotating speed after being stable.

Therefore, it is highly desirable to improve the dehydration manner of the existing washing machine to improve the dehydration efficiency and the stability of the washing machine.

Disclosure of Invention

The invention aims to provide a speed increasing method for the dehydration speed of a variable-frequency pulsator washing machine, which enables a rotary barrel to quickly reach the dynamic level through repeated acceleration and deceleration processesBalance steady state, then through alpha₄And alpha₅The speed increasing process achieves the effect of rapid dehydration, enables the rotary barrel to achieve the final dehydration rotating speed, and solves the problems that the clothes in the dehydration rotary barrel of the existing washing machine are not easy to be leveled and are easy to be eccentric, so that the vibration is too large and the dehydration effect is influenced.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a speed increasing method for the dehydration rotating speed of a variable-frequency pulsator washing machine, which comprises the following steps:

the method comprises the following steps: set target speed to rpm₁Washing machine variable frequency motor with acceleration alpha₁Operation t₁Time;

step two: set target speed to rpm₂Washing machine variable frequency motor with acceleration alpha₂Operation t₂Time, wherein rpm₁＞rpm₂；

Step three: set target speed to rpm₃Washing machine variable frequency motor with acceleration alpha₁Operation t₁Time, wherein rpm₃＞rpm₂；

Step four: the target rotational speed is again set to rpm₂Washing machine variable frequency motor with acceleration alpha₂Operation t₂Time, so that the washing machine gradually decelerates;

step five: circularly executing the step three and the step four for a plurality of times;

step six: repeating the third step;

step seven: set target speed to rpm₄Washing machine variable frequency motor with acceleration alpha₃Operation, operation t₃Time and reach the target rpm₄And maintaining the rotational speed rpm₄(ii) a Wherein the rpm₃＞rpm₄＞rpm₂；

Step eight: set target speed to rpm₅Washing machine variable frequency motor with acceleration alpha₄Operation t₄Time and reach the target rpm₅And maintaining the rotational speed rpm₅(ii) a Wherein the rpm₅＞rpm₃；

Step nine: setting the final dewatering target speed rpm, the washing machine frequency conversion motor acceleration alpha₅Operating until the final dehydration rpm is reached, and maintaining the rotation rpm until the dehydration is finished; wherein rpm > rpm₅。

Furthermore, the number of times of cycle execution in the fifth step is 1-3.

The invention has the following beneficial effects:

the invention realizes multiple acceleration and deceleration processes by repeating the third step to the sixth step, so that the rotary barrel quickly reaches a dynamic balance stable state, and then alpha in the seventh step₄And alpha in step eight₅The speed increasing process achieves the effect of rapid dehydration, and the rotary barrel achieves the final dehydration rotating speed, thereby improving the dehydration efficiency; the condition that the dewatering effect is influenced by overlarge vibration caused by the fact that clothes in the rotary drum of the washing machine are easy to be eccentric is avoided.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic drawing of the dehydration rotation speed curve of the variable frequency pulsator washing machine of the present invention

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention is a method for increasing the dewatering speed of a variable frequency pulsator washing machine, comprising the following steps:

the method comprises the following steps: starting a dehydration program, setting a variable frequency motor of the washing machine to accelerate at an acceleration alpha₁Operation t₁Time and maximum target speed set to rpm₁I.e. at t₁The maximum rotating speed of the variable frequency motor of the washing machine does not exceed rpm within the time₁(ii) a At operation t₁After the time, operating the step two;

step two: setting variable frequency motor of washing machine to acceleration alpha₂Operation t₂Time and maximum target speed set to rpm₂At t, too, at₂The maximum rotating speed of the variable frequency motor of the washing machine does not exceed rpm within the time₂(ii) a Wherein the rotation speed is set to the rpm₁＞rpm₂(ii) a At operation t₂After the time, operating the step three;

step three: setting variable frequency motor of washing machine to acceleration alpha₁Operation t₁Time and maximum target speed set to rpm₃Wherein the rotational speed is set to rpm₃＞rpm₂So that the rotating speed of the variable frequency motor of the washing machine realizes an acceleration process;

step four: resetting the variable frequency motor of the washing machine to accelerate the speed alpha₂Operation t₂Time and minimum target speed set to rpm₂Due to rpm₃＞rpm₂So that the speed reduction process of the variable frequency motor of the washing machine is realized;

step five: circularly executing the step three and the step four for a plurality of times; preferably, the number of times of cycle execution is 1-3; the specific cycle times can be correspondingly adjusted and selected according to the preset clothes washing amount, washing types and the like of the washing machine;

step six: repeating the third step; since the fourth step is a deceleration process, after the fifth step is completed, the third step is repeated to accelerate the rotary tub of the washing machine to the rpm again₃A state; the gravity center of clothes in the rotary drum is adjusted through multiple acceleration and deceleration processes, so that the rotary drum quickly reaches a dynamic balance stable state;

step seven: setting variable frequency motor of washing machine to acceleration alpha₄Operation, operation t₃Time, and target rotation speed is set to rpm₄To reach and maintain the rotational speed rpm₄(ii) a Wherein the rpm₃＞rpm₄＞rpm₂I.e. rpm₄At rpm of the rotational speed set point₂And rpm₃In the process of deceleration operation t₃Time, the rotating tub of the washing machine is more balanced in rotation, and the rotating tub has enough acceleration space;

step eight: setting variable frequency motor of washing machine to acceleration alpha₄Operation t₄Time, and target rotation speed is set to rpm₅Realizing the acceleration process, and achieving and maintaining the rotating speed rpm₅(ii) a Wherein the rpm₅＞rpm₃The drum of the washing machine realizes the accelerated dehydration of the first stage;

step nine: setting variable frequency motor of washing machine to acceleration alpha₅Running until the final dehydration rpm is reached, maintaining the rotation rpm for running for t time, and completing the dehydration after the t time is finished; wherein rpm > rpm₅So that the rotary tub of the washing machine realizes the second stage of accelerated dehydration.

Preferably, α is₄And alpha₅Are all greater than alpha₁、α₂And alpha₃And α₅≥α₄The variable-frequency motor of the washing machine can quickly reach the preset rotating speed in a short time, and the effect of quick dehydration is realized through large acceleration in two stages, so that the dehydration efficiency of the washing machine is improved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (2)

1. A method for increasing the dehydration rotation speed of a variable-frequency pulsator washing machine is characterized by comprising the following steps: the method comprises the following steps:

the method comprises the following steps: set target speed to rpm₁Washing machine variable frequency motor with acceleration alpha₁Operation t₁Time;

step two: set target speed to rpm₂Washing machine variable frequency motor with acceleration alpha₂Operation t₂Time, wherein rpm₁＞rpm₂；

Step three: set target speed to rpm₃Washing machine variable frequency motor with acceleration alpha₁Operation t₁Time, wherein rpm₃＞rpm₂；

Step four: the target rotational speed is again set to rpm₂Washing machine variable frequency motor with acceleration alpha₂Operation t₂Time, so that the washing machine gradually decelerates;

step five: circularly executing the step three and the step four for a plurality of times;

step six: repeating the third step;

step seven: set target speed to rpm₄Washing machine variable frequency motor with acceleration alpha₃Operation, operation t₃Time and reach the target rpm₄And maintaining the rotational speed rpm₄(ii) a Wherein the rpm₃＞rpm₄＞rpm₂；

Step eight: set target speed to rpm₅Variable frequency motor for washing machineAt an acceleration of alpha₄Operation t₄Time and reach the target rpm₅And maintaining the rotational speed rpm₅(ii) a Wherein the rpm₅＞rpm₃；

Step nine: setting the final dewatering target speed rpm, the washing machine frequency conversion motor acceleration alpha₅Operating until the final dehydration rpm is reached, and maintaining the rotation rpm until the dehydration is finished; wherein rpm > rpm₅。

2. The method for increasing the dewatering speed of the variable-frequency pulsator washing machine as claimed in claim 1, wherein the number of the cycle execution times in the step five is 1-3.

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