CN104195791A - Fuzzy weighing method and pulsator washing machine - Google Patents

Fuzzy weighing method and pulsator washing machine Download PDF

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Publication number
CN104195791A
CN104195791A CN201410277553.1A CN201410277553A CN104195791A CN 104195791 A CN104195791 A CN 104195791A CN 201410277553 A CN201410277553 A CN 201410277553A CN 104195791 A CN104195791 A CN 104195791A
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CN
China
Prior art keywords
rotary speed
washing machine
impeller
drum washing
rotary
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CN201410277553.1A
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Chinese (zh)
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CN104195791B (en
Inventor
谷虎
刘玉春
刘文祥
石新国
湛国庆
陈伟波
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Hisense Shandong Refrigerator Co Ltd
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Hisense Ronshen Guangdong Refrigerator Co Ltd
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Priority to CN201410277553.1A priority Critical patent/CN104195791B/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F17/00—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid
    • D06F17/06—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid by rotary impellers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/18—Condition of the laundry, e.g. nature or weight

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

The embodiment of the invention provides a fuzzy weighing method and a pulsator washing machine, and relates to the field of control of pulsator washing machines. The time used for the pulsator washing machine to determine weight of clothes to be washed can be saved, and accordingly washing time is shortened every time. The fuzzy weighing method includes the steps that a motor drives pulsators of the pulsator washing machine to rotate quicker and quicker until the pulsators reach a rated rotation speed; the motor and the pulsators are in the speed reduction process at the same time, the first rotation speed of the pulsators is obtained, the first rotation speed is the rotation speed of the pulsators after the speed reduction process of the pulsators lasts for a first preset time period, and the first rotation speed is not equal to zero; the weight of the clothes in the pulsator washing machine is determined according to the first rotation speed. The fuzzy weighing method is used for the pulsator washing machine to determine the weight of the clothes.

Description

A kind of fuzzy Weighing method and rotary drum washing machine
Technical field
The present invention relates to rotary drum washing machine control field, relate in particular to a kind of fuzzy Weighing method and rotary drum washing machine.
Background technology
In the washing process of rotary drum washing machine, can, according to the Weight control wash time of washing clothes, flooding time, inflow and washing beat, therefore, before washing, generally need to determine the weight of washing clothes.
The method that detects at present the weight of washing clothes is mainly after rotary drum washing machine is put into clothing, controlling motor makes the impeller of rotary drum washing machine along a direction rotation to First Speed, then allow impeller freely slow down, obtaining impeller is freely decelerated to zero process from First Speed, the umber of pulse of motor output, according to described umber of pulse, can obtain the weight of clothing in rotary drum washing machine, but while measuring clothes weight by this method, uncontrollable impeller was freely decelerated to for zero time used from First Speed, and generally, it is longer that described impeller is freely decelerated to the lasting time of zero process from First Speed, while therefore causing rotary drum washing machine to determine washing clothes weight, the used time is longer, and then cause the time of each laundry longer.
Summary of the invention
Embodiments of the invention provide a kind of fuzzy Weighing method and rotary drum washing machine, can save the weight time that rotary drum washing machine is determined washing clothes, and then shorten the time of each laundry.
For achieving the above object, embodiments of the invention adopt following technical scheme:
On the one hand, provide a kind of fuzzy Weighing method, for rotary drum washing machine, the motor of described rotary drum washing machine is external rotor electric machine, and described fuzzy Weighing method comprises:
Described in described driven by motor, the impeller of rotary drum washing machine accelerates rotation to the first specified rotary speed;
Described motor and described impeller are simultaneously in moderating process, obtain the first rotary speed of described impeller, the moderating process that described the first rotary speed is described impeller continues the first default duration rotary speed of described impeller afterwards, and described the first rotary speed is non-vanishing;
According to described the first rotary speed, determine the weight of clothing in described rotary drum washing machine.
Optionally, in the impeller acceleration of rotary drum washing machine described in described driven by motor, rotate to the first specified rotary speed, described method also comprises:
Described in described driven by motor, impeller continues with described the first specified rotary speed rotation in the second default duration.
Optionally, described, according to described the first rotary speed, before determining the weight of clothing in described rotary drum washing machine, described method also comprises:
Obtain the second rotary speed, described the second rotary speed is while there is not clothing in described rotary drum washing machine, and described impeller continue to slow down from the first specified rotary speed after the described first default duration, the rotary speed of described impeller;
Described according to described the first rotary speed, determine that the weight of clothing in described rotary drum washing machine comprises:
According to the difference of described the first rotary speed and described the second rotary speed, determine the weight of described clothing;
Or according to the ratio of described the first rotary speed and described the second rotary speed, determine the weight of described clothing.
On the one hand, provide a kind of rotary drum washing machine, the motor of described rotary drum washing machine is external rotor electric machine, and described rotary drum washing machine comprises control module, for:
Control described motor, the impeller of rotary drum washing machine accelerates rotation to the first specified rotary speed described in described driven by motor;
Control described motor, described motor and described impeller are simultaneously in moderating process;
Described rotary drum washing machine also comprises acquiring unit, and for obtaining the first rotary speed of described impeller, the moderating process that described the first rotary speed is described impeller continues the first default duration rotary speed of described impeller afterwards, and described the first rotary speed is non-vanishing;
Determining unit, for according to described the first rotary speed, determines the weight of clothing in described rotary drum washing machine.
Optionally, described control module also for:
Control described motor, impeller described in described driven by motor is continued with described the first specified rotary speed rotation in the second default duration.
Optionally, described acquiring unit also for:
Obtain the second rotary speed, described the second rotary speed is while there is not clothing in described rotary drum washing machine, and described impeller continue to slow down from the first specified rotary speed after the described first default duration, the rotary speed of described impeller;
Described determining unit specifically for:
According to the difference of described the first rotary speed and described the second rotary speed, determine the weight of described clothing;
Or according to the ratio of described the first rotary speed and described the second rotary speed, determine the weight of described clothing.
On the one hand, provide another kind of fuzzy Weighing method, for rotary drum washing machine, the motor of described rotary drum washing machine is inner rotor motor, and described fuzzy Weighing method comprises:
Described in described driven by motor, the impeller of rotary drum washing machine and wash bucket accelerate rotation to the second specified rotary speed simultaneously;
Described motor, described impeller and described wash bucket are simultaneously in moderating process, obtain the 3rd rotary speed of described impeller and described wash bucket, the rotary speed of described impeller and wash bucket after the default duration of moderating process lasting second that described the 3rd rotary speed is described impeller and wash bucket, the 3rd rotary speed is non-vanishing;
According to described the 3rd rotary speed, determine the weight of clothing in described rotary drum washing machine.
Optionally, at the impeller of rotary drum washing machine described in described driven by motor and wash bucket, accelerate rotation to the second specified rotary speed, described method also comprises simultaneously:
Described in described driven by motor, impeller and described wash bucket continue with described the second specified rotary speed rotation simultaneously in the described the 3rd default duration.
Optionally, described, according to described the 3rd rotary speed, before determining the weight of clothing in described rotary drum washing machine, described method also comprises:
Obtain the 4th rotary speed, described the 4th rotary speed is while there is not clothing in described rotary drum washing machine, and described impeller and wash bucket are from continue the to slow down rotary speed of described impeller and wash bucket after the described second default duration of the second specified rotary speed;
Described according to described the 3rd rotary speed, determine that the weight of clothing in described rotary drum washing machine comprises:
According to the difference of described the 3rd rotary speed and described the 4th rotary speed, determine the weight of described clothing;
Or according to the ratio of described the 3rd rotary speed and described the 4th rotary speed, determine the weight of described clothing.
Optionally, in described motor, described impeller and described wash bucket while, before moderating process, described method also comprises:
Clothing in described rotary drum washing machine is sprayed water, and continues the 4th default duration.
On the one hand, provide another kind of rotary drum washing machine, the motor of described rotary drum washing machine is inner rotor motor, and described rotary drum washing machine comprises control module, and described control module is used for:
Control described motor, make the impeller of rotary drum washing machine described in described driven by motor and wash bucket accelerate rotation to the second specified rotary speed simultaneously;
Control described motor, make described motor, described impeller and described wash bucket simultaneously in moderating process;
Described rotary drum washing machine also comprises acquiring unit, for obtaining the 3rd rotary speed of described impeller and described wash bucket, the rotary speed of described impeller and wash bucket after the default duration of moderating process lasting second that described the 3rd rotary speed is described impeller and wash bucket, the 3rd rotary speed is non-vanishing;
Determining unit, for according to described the 3rd rotary speed, determines the weight of clothing in described rotary drum washing machine.
Optionally, described control module also for:
Control described motor, impeller and described wash bucket described in described driven by motor are continued with described the second specified rotary speed rotation simultaneously in the described the 3rd default duration.
Optionally, described acquiring unit also for:
Obtain the 4th rotary speed, described the 4th rotary speed is while there is not clothing in described rotary drum washing machine, and described impeller and wash bucket are from continue the to slow down rotary speed of described impeller and wash bucket after the described second default duration of the second specified rotary speed;
Described determining unit specifically for:
According to the difference of described the 3rd rotary speed and described the 4th rotary speed, determine the weight of described clothing;
Or according to the ratio of described the 3rd rotary speed and described the 4th rotary speed, determine the weight of described clothing.
Optionally, described rotary drum washing machine also comprises water spray unit, for:
Clothing in described rotary drum washing machine is sprayed water, and continues the 4th default duration.
The embodiment of the present invention provides a kind of fuzzy Weighing method and rotary drum washing machine, owing to having adopted above technical scheme, has the following advantages:
(1) if the motor of described rotary drum washing machine is external rotor electric machine, when described rotary drum washing machine is when weighing to the clothing in rotary drum washing machine, first need the motor power supply for described rotary drum washing machine, make the impeller of rotary drum washing machine described in described driven by motor accelerate rotation to the first specified rotary speed, then stop as described motor power supply, make described motor and described impeller simultaneously in moderating process, obtain the first rotary speed of described impeller, the moderating process that described the first rotary speed is described impeller continues the first default duration rotary speed of described impeller afterwards, described the first rotary speed is non-vanishing, and then according to described the first rotary speed, determine the weight of clothing in described rotary drum washing machine.The rotor of described external rotor electric machine outside, and the quality of described rotor is larger, make the rotary inertia of external rotor electric machine larger, therefore when driven by motor impeller rotates, the rotary inertia of motor and impeller is larger, the moderating process of described impeller can continue the long period, and the first rotary speed that can slow down after the first default duration from the first specified rotary speed by impeller is determined the weight of clothing.Compared to prior art, described rotary drum washing machine is when weighing to the clothing in rotary drum washing machine, not needing to experience impeller, from the first specified rotary speed, to continue the speed that is decelerated to be zero process, only need impeller to reduce speed now from the first specified rotary speed, this moderating process continues the first default duration, the first rotary speed getting after the first default duration is non-vanishing, that is to say and be less than impeller by the first default duration from the first specified rotary speed, to be decelerated to speed be zero time used, thereby saved the time that described rotary drum washing machine is determined the weight of washing clothes, and then can shorten time of each laundry.
(2) if when the motor of described rotary drum washing machine is inner rotor motor, when described rotary drum washing machine is when weighing to the clothing in rotary drum washing machine, first need the motor power supply for described rotary drum washing machine, make impeller and the wash bucket of rotary drum washing machine described in described driven by motor accelerate rotation to the first specified rotary speed simultaneously, then stop as described motor power supply, make described motor, described impeller and described wash bucket are simultaneously in moderating process, obtain the 3rd rotary speed of described impeller and described wash bucket, the rotary speed of described impeller and wash bucket after the default duration of moderating process lasting first that described the 3rd rotary speed is described impeller and wash bucket, the 3rd rotary speed is non-vanishing, and then according to described the 3rd rotary speed, determine the weight of clothing in described rotary drum washing machine.The rotor of described inner rotor motor is at center, make the rotary inertia of described inner rotor motor less, when inner rotor motor drives the impeller of described rotary drum washing machine to rotate by belt transmission, the rotary inertia of motor and impeller is less, if just impeller rotates, it is very short that impeller is decelerated to the zero time from the first specified rotary speed, while there is clothing in described rotary drum washing machine, due to the frictional force impact between clothing and impeller, it is shorter that impeller is decelerated to the zero time from the first specified rotary speed, therefore cannot obtain by obtaining the default duration of impeller deceleration first rotary speed afterwards the weight of clothing.So if the motor of rotary drum washing machine is inner rotor motor, when the clothing in rotary drum washing machine carries out fuzzy weighing, can be so that impeller and wash bucket rotate simultaneously, rotary inertia is larger, and clothing can be followed wash bucket and rotated together, centrifugal force during clothing rotation has further increased rotary inertia, extended the deceleration time of described impeller and wash bucket, therefore can be by impeller and wash bucket the 3rd rotary speed after the first specified rotary speed is decelerated to the first default duration determine the weight of clothing.Compared to prior art, described rotary drum washing machine is when weighing to the clothing in rotary drum washing machine, not needing to experience impeller and wash bucket, from the first specified rotary speed, to continue the speed that is decelerated to be zero process simultaneously, only need impeller and wash bucket from the first specified rotary speed, to reduce speed now simultaneously, this moderating process continues the first default duration, the 3rd rotary speed getting after the first default duration is non-vanishing, that is to say and be less than impeller and wash bucket by the first default duration from the first specified rotary speed, to be decelerated to speed be zero time used simultaneously, thereby saved the time that described rotary drum washing machine is determined the weight of washing clothes, and then can shorten time of each laundry.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
A kind of fuzzy Weighing method flow chart that Fig. 1 provides for the embodiment of the present invention;
The structural representation of a kind of rotary drum washing machine that Fig. 2 provides for the embodiment of the present invention;
The fuzzy Weighing method flow chart of another kind that Fig. 3 provides for the embodiment of the present invention;
The structural representation of the another kind of rotary drum washing machine that Fig. 4 provides for the embodiment of the present invention;
The structural representation of another rotary drum washing machine that Fig. 5 provides for the embodiment of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of fuzzy Weighing method of rotary drum washing machine, and as shown in Figure 1, for rotary drum washing machine, the motor of described rotary drum washing machine is external rotor electric machine, and described fuzzy Weighing method comprises:
Described in step 101, described driven by motor, the impeller of rotary drum washing machine accelerates rotation to the first specified rotary speed.
Concrete, the motor that described rotary drum washing machine can be described rotary drum washing machine by control circuit is powered, and then control described external rotor electric machine and accelerate to rotate, drive the impeller rotation of described rotary drum washing machine to the first specified rotary speed, described the first specified rotary speed is predefined, in practical application, can set according to the concrete condition of rotary drum washing machine, the embodiment of the present invention does not limit this.
Preferably, can accelerate rotation to the first specified rotary speed at described impeller, make described impeller continue to rotate with the first specified rotary speed in the second default duration, the described second default duration is predefined, in practical application, can arrange according to the concrete condition of rotary drum washing machine, the embodiment of the present invention does not limit this.
Step 102, described motor and described impeller are simultaneously in moderating process, obtain the first rotary speed of described impeller, the moderating process that described the first rotary speed is described impeller continues the first default duration rotary speed of described impeller afterwards, and described the first rotary speed is non-vanishing.
The rotary drum washing machine that is external rotor electric machine for motor, when the impeller rotation of described rotary drum washing machine is to the first specified rotary speed, described rotary drum washing machine can stop as described external rotor electric machine power supply, now described impeller is in deceleration regime, then obtain the first rotary speed of described impeller, the moderating process that described the first rotary speed is described impeller continues the first default duration rotary speed of described impeller afterwards, and described the first rotary speed is non-vanishing.
Optionally, the rotary drum washing machine that is external rotor electric machine for motor, the rotary speed of impeller equates with the rotating speed of motor, can determine by the rotating speed of motor the rotary speed of impeller.Example, described motor can configure Hall element, and motor often turns around, 12 pulses of Hall element output, the umber of pulse that then described rotary drum washing machine can be exported by Hall element per second is obtained the rotating speed of motor.Concrete, the first specified rotary speed of supposing impeller is 100 revolutions per seconds, corresponding umber of pulse is 1200 pulses each second, when rotary drum washing machine detects Hall element and exports 1200 pulses each second, represent that impeller has reached the first specified rotary speed, timer starts timing, stop as motor power supply simultaneously, make motor and impeller simultaneously in free moderating process, when the time of timer reaches the first default duration, rotary drum washing machine detects the umber of pulse of Hall element output, then by described umber of pulse, obtain impeller rotary speed now as the first rotary speed.In practical application, the change frequency of the electromotive force that rotary drum washing machine can also be exported by motor is determined the rotating speed of motor, or lenticular lenses is set on motor, determines the rotating speed of motor by raster count.
Wherein, the described first default duration is predefined, can arrange according to the concrete condition of rotary drum washing machine, and the embodiment of the present invention does not limit this.
Preferably, the rotary drum washing machine that is external rotor electric machine for motor, the impeller that can work as described rotary drum washing machine continues with after the first specified rotary speed rotation in the second default duration, stop as described external rotor electric machine power supply, make described motor and described impeller simultaneously in moderating process, and obtain the first rotary speed of described impeller.
Step 103, according to described the first rotary speed, determine the weight of clothing in described rotary drum washing machine.
Because the motor of described rotary drum washing machine is external rotor electric machine, so the impeller of rotary drum washing machine and external rotor electric machine are coaxial rotation, the rotor of external rotor electric machine outside, and the quality of described rotor is larger, make the rotary inertia of external rotor electric machine larger, therefore when driven by motor impeller rotates, the rotary inertia of motor and impeller is larger, the moderating process of described impeller can continue the long period, and the first rotary speed that can slow down after the first default duration from the first specified rotary speed by impeller is determined the weight of clothing.
When clothing in rotary drum washing machine is more, frictional force between described clothing and impeller is larger, under the impact of described larger frictional force, the first rotary speed that described impeller obtains after the first specified rotary speed is slowed down the first default duration is less, now the first default duration need to arrange shorter duration, and the first rotary speed that can slow down after the first default duration from the first specified rotary speed by impeller is determined the weight of clothing.When clothing in rotary drum washing machine is less, frictional force between described clothing and impeller is less, under the impact of described less frictional force, the first rotary speed that described impeller obtains after the first specified rotary speed is slowed down the first default duration is larger, although this is the first default duration, longer duration can be set, if but the first default duration setting is longer, when clothing in rotary drum washing machine is more, probably in the first default duration, impeller has stopped the rotation, cannot obtain the first rotary speed, therefore, it during initialization, need to be the first default shorter duration of duration setting, the first rotary speed that can slow down after the first default duration from the first specified rotary speed by impeller is determined the weight of clothing.At the first default duration, arrange applicable in the situation that, so the weight of the clothing in rotary drum washing machine and described the first rotary speed are inversely proportional to.
Optionally, can be in the control chip of rotary drum washing machine pre-stored rotary speed table corresponding to clothes weight, described rotary speed from the corresponding table record of clothes weight different rotary speed corresponding clothes weight respectively, then according to the first rotary speed, inquire about the rotary speed table corresponding to clothes weight prestoring, can determine the weight of the clothing in rotary drum washing machine.
In practical application, also can pre-stored acceleration table corresponding to clothes weight, the corresponding table of described acceleration and clothes weight is corresponding, and different acceleration is distinguished corresponding clothes weight, after getting described the first rotary speed, can, according to the corresponding relation between rotary speed and acceleration, obtain the first acceleration corresponding to described the first rotary speed, then according to the first acceleration, inquire about the acceleration table corresponding to clothes weight prestoring, can determine the weight of described clothing.
So, at rotary drum washing machine motor, it is external rotor electric machine, and when rotary drum washing machine is weighed to clothing, the motor that first described rotary drum washing machine can be described rotary drum washing machine by control circuit is powered, make the impeller rotation of rotary drum washing machine described in described driven by motor to the first specified rotary speed, after reaching the first specified rotary speed, stop as described motor power supply, make described motor and described impeller simultaneously in moderating process, then obtain the first rotary speed of described impeller, the moderating process that described the first rotary speed is described impeller continues the first default duration rotary speed of described impeller afterwards, described the first rotary speed is non-vanishing, finally can be according to described the first rotary speed, determine the weight of clothing in described rotary drum washing machine.Compared to prior art, fuzzy Weighing method described in the embodiment of the present invention, not needing to experience impeller, from the first specified rotary speed, to continue the speed that is decelerated to be zero process, only need impeller to reduce speed now from the first specified rotary speed, this moderating process continues the first default duration, the first rotary speed getting after the first default duration is non-vanishing, that is to say and be less than impeller by the first default duration from the first specified rotary speed, to be decelerated to speed be zero time used, thereby saved the time that described rotary drum washing machine is determined the weight of washing clothes, and then can shorten time of each laundry.
Further, in the impeller acceleration of rotary drum washing machine described in described driven by motor, rotate to the first specified rotary speed, described motor can also drive described impeller in the second default duration, to continue with described the first specified rotary speed rotation.Example, it is that described motor is powered that rotary drum washing machine can also continue by control circuit, impeller described in described driven by motor is continued with described the first specified rotary speed rotation in the second default duration, like this can so that the rotary speed of the impeller of rotary drum washing machine stable maintain the first specified rotary speed, avoided the unstable accuracy that reduces described fuzzy Weighing method of speed due to described impeller.
Optionally, described according to described the first rotary speed, before determining the weight of clothing in described rotary drum washing machine, described rotary drum washing machine can also obtain the second rotary speed, described the second rotary speed is while there is not clothing in described rotary drum washing machine, described impeller continues to slow down from the first specified rotary speed after the described first default duration, the rotary speed of described impeller, then can, according to the difference of described the first rotary speed and described the second rotary speed, determine the weight of described clothing; Or according to the ratio of described the first rotary speed and described the second rotary speed, determine the weight of described clothing.In actual applications, if rotary drum washing machine is longer service time, can cause loss comparatively serious, make the frictional force of rotary drum washing machine inside larger, now, if only determine the weight of clothing in rotary drum washing machine by the first rotary speed, described the first rotary speed comprises the velocity variations that a part is caused by rotary drum washing machine internal factor, the clothes weight that makes to obtain is greater than the actual weight of clothing, if adopt the difference of described the first rotary speed and described the second rotary speed, determine the weight of clothing, can get rid of the impact causing due to rotary drum washing machine factor.The ratio of described the first rotary speed of same employing and described the second rotary speed, determines the weight of described clothing, also can get rid of the impact causing due to rotary drum washing machine factor.
In practical application, before rotary drum washing machine dispatches from the factory, the second rotary speed can be pre-stored in the control chip of rotary drum washing machine, when rotary drum washing machine carries out fuzzy weighing to clothing, can directly from described control chip, obtain the second rotary speed.The concrete steps of obtaining the second rotary speed during initialization are: while there is not clothing in the wash bucket of described rotary drum washing machine, motor power supply for rotary drum washing machine, make described in described driven by motor impeller rotation to described the first specified rotary speed, then stop as described motor power supply, make described motor and described impeller simultaneously in moderating process, the moderating process of obtaining described impeller continues the rotary speed of described impeller after the first default duration as the second rotary speed.
When rotary drum washing machine longer service time, wear and tear when larger, user also can redeterminate the second rotary speed according to the concrete steps of obtaining the second rotary speed, obtain the second new rotary speed, then by described the second new rotary speed, update stored in the second rotary speed in control chip, improve the degree of accuracy of the fuzzy Weighing method of rotary drum washing machine.
Optionally, according to the difference of described the first rotary speed and described the second rotary speed, while determining the weight of described clothing, the rotary speed difference that can prestore in the control chip of described rotary drum washing machine table corresponding to clothes weight, described rotary speed difference from the corresponding table record of clothes weight different rotary speed difference corresponding clothes weight respectively, then can be according to the difference of described the first rotary speed and described the second rotary speed, the rotary speed difference table corresponding to clothes weight prestoring by inquiry, can determine the weight of described clothing.
Optionally, according to the ratio of described the first rotary speed and described the second rotary speed, while determining the weight of described clothing, rotary speed ratio table corresponding to clothes weight can prestore in the control chip of described rotary drum washing machine, described rotary speed ratio from the corresponding table record of clothes weight different rotary speed ratio corresponding clothes weight respectively, then can be according to the ratio of described the first rotary speed and described the second rotary speed, the rotary speed ratio table corresponding to clothes weight prestoring by inquiry, can determine the weight of described clothing.
The fuzzy Weighing method that the embodiment of the present invention provides, when the rotary drum washing machine that is external rotor electric machine at motor is weighed to clothing, the motor that can be first described rotary drum washing machine by control circuit is powered, make the impeller rotation of rotary drum washing machine described in described driven by motor to the first specified rotary speed, after reaching the first specified rotary speed, stop as described motor power supply, make described motor and described impeller simultaneously in moderating process, then obtain the first rotary speed of described impeller, the moderating process that described the first rotary speed is described impeller continues the first default duration rotary speed of described impeller afterwards, described the first rotary speed is all non-vanishing, finally can be according to described the first rotary speed, determine the weight of clothing in described rotary drum washing machine.Or described in obtaining while there is no clothing in rotary drum washing machine, impeller is after the first specified rotary speed continues to slow down the described first default duration, the second rotary speed of described impeller, then according to difference or the ratio of the first rotary speed and the second rotary speed, determine the weight of clothing in described rotary drum washing machine.Compared to prior art, fuzzy Weighing method described in the embodiment of the present invention, not needing to experience impeller, from the first specified rotary speed, to continue the speed that is decelerated to be zero process, only need impeller to reduce speed now from the first specified rotary speed, this moderating process continues the first default duration, the first rotary speed getting after the first default duration is non-vanishing, that is to say and be less than impeller by the first default duration from the first specified rotary speed, to be decelerated to speed be zero time used, thereby saved the time that described rotary drum washing machine is determined the weight of washing clothes, and then can shorten time of each laundry.Further, because described rotary drum washing machine can also be according to difference or the ratio of the first rotary speed and the second rotary speed, determine the weight of clothing in described rotary drum washing machine, can get rid of the impact causing due to rotary drum washing machine factor, improved the accuracy of described fuzzy Weighing method.
The embodiment of the present invention provides a kind of rotary drum washing machine 20, and the motor of described rotary drum washing machine 20 is external rotor electric machine, and as shown in Figure 2, described rotary drum washing machine 20 comprises control module 201, acquiring unit 202 and determining unit 203.
Described control module 201 for: control described motor, make the impeller of rotary drum washing machine 20 described in described driven by motor accelerate rotation to the first specified rotary speed; Control described motor, make described motor and described impeller simultaneously in moderating process.
Concrete, the motor that described rotary drum washing machine 20 can be described rotary drum washing machine 20 by control circuit is powered, and then control described external rotor electric machine and accelerate to rotate, drive the impeller rotation of described rotary drum washing machine 20 to the first specified rotary speed, described the first specified rotary speed is predefined, in practical application, can set according to the concrete condition of rotary drum washing machine 20, the embodiment of the present invention does not limit this.Then can also stop powering for described external rotor electric machine by control circuit, now described motor and impeller be simultaneously in free deceleration regime.
Described acquiring unit 202, for obtaining the first rotary speed of described impeller, the moderating process that described the first rotary speed is described impeller continues the first default duration rotary speed of described impeller afterwards, and described the first rotary speed is non-vanishing.
General, acquiring unit 202 can timing when described moderating process starts, and when described impeller stops timing after described the first specified rotary speed is slowed down the first default duration, now obtains the rotary speed of described impeller as the first rotary speed.
Optionally, the rotary drum washing machine that is external rotor electric machine for motor, the rotary speed of impeller equates with the rotating speed of motor, can determine by the rotating speed of motor the rotary speed of impeller.Example, described motor can configure Hall element, and motor often turns around, 12 pulses of Hall element output, the umber of pulse that then described rotary drum washing machine can be exported by Hall element per second is obtained the rotating speed of motor.Concrete, the first specified rotary speed of supposing impeller is 100 revolutions per seconds, corresponding umber of pulse is 1200 pulses each second, when rotary drum washing machine detects Hall element and exports 1200 pulses each second, represent that impeller has reached the first specified rotary speed, timer starts timing, stop as motor power supply simultaneously, make motor and impeller simultaneously in free moderating process, when the time of timer reaches the first default duration, acquiring unit 202 detects the umber of pulse of Hall element output, then by described umber of pulse, obtain impeller rotary speed now as the first rotary speed.In practical application, the change frequency of the electromotive force that acquiring unit 202 can also be exported by motor is determined the rotating speed of motor, or lenticular lenses is set on motor, determines the rotating speed of motor by raster count.
Determining unit 203, for according to described the first rotary speed, determines the weight of clothing in described rotary drum washing machine 20.
Because the motor of described rotary drum washing machine 20 is external rotor electric machine, so the impeller of rotary drum washing machine 20 and external rotor electric machine are coaxial rotation, the rotor of external rotor electric machine outside, and the quality of described rotor is larger, make the rotary inertia of external rotor electric machine larger, therefore when driven by motor impeller rotates, the rotary inertia of motor and impeller is larger, the moderating process of described impeller can continue the long period, and the first rotary speed that can slow down after the first default duration from the first specified rotary speed by impeller is determined the weight of clothing.
Optionally, can be in the control chip of rotary drum washing machine pre-stored rotary speed table corresponding to clothes weight, described rotary speed from the corresponding table record of clothes weight different rotary speed corresponding clothes weight respectively, then according to the first rotary speed, inquire about the rotary speed table corresponding to clothes weight prestoring, can determine the weight of the clothing in rotary drum washing machine 20.
In practical application, also can pre-stored acceleration table corresponding to clothes weight, the corresponding table of described acceleration and clothes weight is corresponding, and different acceleration is distinguished corresponding clothes weight, after getting described the first rotary speed, can, according to the corresponding relation between rotary speed and acceleration, obtain the first acceleration corresponding to described the first rotary speed, then according to the first acceleration, inquire about the acceleration table corresponding to clothes weight prestoring, can determine the weight of described clothing.
So, at rotary drum washing machine motor, it is external rotor electric machine, and when rotary drum washing machine is weighed to clothing, the motor that first described rotary drum washing machine can be described rotary drum washing machine by control module is powered, make the impeller rotation of rotary drum washing machine described in described driven by motor to the first specified rotary speed, after reaching the first specified rotary speed, stop as described motor power supply, make described motor and described impeller simultaneously in moderating process, then by acquiring unit, obtain the first rotary speed of described impeller, the moderating process that described the first rotary speed is described impeller continues the first default duration rotary speed of described impeller afterwards, described the first rotary speed is non-vanishing, finally can be by determining unit according to described the first rotary speed, determine the weight of clothing in described rotary drum washing machine.Compared to prior art, rotary drum washing machine described in the embodiment of the present invention, not needing to experience impeller, from the first specified rotary speed, to continue the speed that is decelerated to be zero process, only need impeller to reduce speed now from the first specified rotary speed, this moderating process continues the first default duration, the first rotary speed getting after the first default duration is non-vanishing, that is to say and be less than impeller by the first default duration from the first specified rotary speed, to be decelerated to speed be zero time used, thereby saved the time that described rotary drum washing machine is determined the weight of washing clothes, and then can shorten time of each laundry.
Further, rotary drum washing machine 20 can also be controlled described motor according to described control module 201, and impeller described in described driven by motor is continued with described the first specified rotary speed rotation in the second default duration.Example, rotary drum washing machine 20 can also continue as described motor by control module 201 and power, the impeller of rotary drum washing machine described in described driven by motor is continued with described the first specified rotary speed rotation in the first default duration, like this can so that the rotary speed of the impeller of rotary drum washing machine stable maintain the first specified rotary speed, avoided the unstable accuracy that reduces described fuzzy Weighing method of speed due to described impeller.
Example, described acquiring unit 202 also for: obtain the second rotary speed, described the second rotary speed is while there is not clothing in described rotary drum washing machine 20, and described impeller continue to slow down from the first specified rotary speed after the described first default duration, the rotary speed of described impeller.
In practical application, before rotary drum washing machine 20 dispatches from the factory, the second rotary speed can be pre-stored in the control chip of rotary drum washing machine 20, when 20 pairs of clothings of rotary drum washing machine carry out fuzzy weighing, can directly from described control chip, obtain the second rotary speed.The concrete steps of obtaining the second rotary speed during initialization are: while there is not clothing in the wash bucket of described rotary drum washing machine 20, motor power supply for rotary drum washing machine 20, make described in described driven by motor impeller rotation to described the first specified rotary speed, then stop as described motor power supply, make described motor and described impeller simultaneously in moderating process, the moderating process of obtaining described impeller continues the rotary speed of described impeller after the first default duration as the second rotary speed.
When rotary drum washing machine longer 20 service times, wear and tear when larger, user also can redeterminate the second rotary speed according to the concrete steps of obtaining the second rotary speed, obtain the second new rotary speed, then by described the second new rotary speed, update stored in the second rotary speed in control chip, improve the degree of accuracy of the fuzzy Weighing method of rotary drum washing machine 20.
Described determining unit 203 specifically for: according to the difference of described the first rotary speed and described the second rotary speed, determine the weight of described clothing; Or according to the ratio of described the first rotary speed and described the second rotary speed, determine the weight of described clothing.
Optionally, according to the difference of described the first rotary speed and described the second rotary speed, while determining the weight of described clothing, the rotary speed difference that can prestore in the control chip of described rotary drum washing machine 20 table corresponding to clothes weight, described rotary speed difference from the corresponding table record of clothes weight different rotary speed difference corresponding clothes weight respectively, then can be according to the difference of described the first rotary speed and described the second rotary speed, the rotary speed difference table corresponding to clothes weight prestoring by inquiry, can determine the weight of described clothing.
Optionally, according to the ratio of described the first rotary speed and described the second rotary speed, while determining the weight of described clothing, rotary speed ratio table corresponding to clothes weight can prestore in the control chip of described rotary drum washing machine 20, described rotary speed ratio from the corresponding table record of clothes weight different rotary speed ratio corresponding clothes weight respectively, then can be according to the ratio of described the first rotary speed and described the second rotary speed, the rotary speed ratio table corresponding to clothes weight prestoring by inquiry, can determine the weight of described clothing.
It is external rotor electric machine rotary drum washing machine that the embodiment of the present invention provides motor, when clothing is weighed, the motor that can be first described rotary drum washing machine by control module is powered, make the impeller rotation of rotary drum washing machine described in described driven by motor to the first specified rotary speed, after reaching the first specified rotary speed, stop as described motor power supply, make described motor and described impeller simultaneously in moderating process, then by acquiring unit, obtain the first rotary speed of described impeller, the moderating process that described the first rotary speed is described impeller continues the first default duration rotary speed of described impeller afterwards, described the first rotary speed is all non-vanishing, finally can be by determining unit according to described the first rotary speed, determine the weight of clothing in described rotary drum washing machine.Or described in obtaining while there is no clothing in rotary drum washing machine by acquiring unit, impeller is after the first specified rotary speed continues to slow down the described first default duration, the second rotary speed of described impeller, then according to difference or the ratio of the first rotary speed and the second rotary speed, determine the weight of clothing in described rotary drum washing machine.Compared to prior art, rotary drum washing machine described in the embodiment of the present invention, not needing to experience impeller, from the first specified rotary speed, to continue the speed that is decelerated to be zero process, only need impeller to reduce speed now from the first specified rotary speed, this moderating process continues the first default duration, the first rotary speed getting after the first default duration is non-vanishing, that is to say and be less than impeller by the first default duration from the first specified rotary speed, to be decelerated to speed be zero time used, thereby saved the time that described rotary drum washing machine is determined the weight of washing clothes, and then can shorten time of each laundry.Further, because described rotary drum washing machine can also be according to difference or the ratio of the first rotary speed and the second rotary speed, determine the weight of clothing in described rotary drum washing machine, can get rid of the impact causing due to rotary drum washing machine factor, improved the accuracy of described fuzzy Weighing method.
The embodiment of the present invention provides a kind of fuzzy Weighing method of rotary drum washing machine, and as shown in Figure 3, for rotary drum washing machine, the motor of described rotary drum washing machine is inner rotor motor, and described fuzzy Weighing method comprises:
Described in step 301, described driven by motor, the impeller of rotary drum washing machine and wash bucket accelerate rotation to the second specified rotary speed simultaneously.
Concrete, described rotary drum washing machine can be that described inner rotor motor is powered by control circuit, impeller and the wash bucket of rotary drum washing machine described in described driven by motor rotated to described the second specified rotary speed simultaneously, described the second specified rotary speed is predefined, in practical application, can set according to the concrete condition of rotary drum washing machine, the embodiment of the present invention does not limit this.
Preferably, can accelerate rotation to the second specified rotary speed at described impeller and described wash bucket simultaneously, make described impeller and described wash bucket in the 3rd default duration, continue to rotate with the second specified rotary speed simultaneously, the described the 3rd default duration is predefined, in practical application, can arrange according to the concrete condition of rotary drum washing machine, the embodiment of the present invention does not limit this.
Step 302, described motor, described impeller and described wash bucket are simultaneously in moderating process, obtain the 3rd rotary speed of described impeller and described wash bucket, the rotary speed of described impeller and wash bucket after the default duration of moderating process lasting second that described the 3rd rotary speed is described impeller and wash bucket, the 3rd rotary speed is non-vanishing.
The rotary drum washing machine that is inner rotor motor for motor, when described impeller and described wash bucket rotate to the second specified rotary speed simultaneously, described rotary drum washing machine can stop powering for described inner rotor motor by control circuit, described motor now, described impeller and described wash bucket are simultaneously in deceleration regime, then obtain the 3rd rotary speed of described impeller and described wash bucket, the rotary speed of described impeller and wash bucket after the default duration of moderating process lasting described second that described the 3rd rotary speed is described impeller and wash bucket, described the 3rd rotary speed is non-vanishing.
Optionally, the rotary drum washing machine that is inner rotor motor for motor, motor drives impeller and wash bucket to rotate by belt transmission simultaneously, and the rotary speed of impeller equates with the rotating speed of motor or be proportional, can determine by the rotating speed of motor the rotary speed of impeller and wash bucket.Example, described motor can configure Hall element, and motor often turns around, 12 pulses of Hall element output, the umber of pulse that then described rotary drum washing machine can be exported by Hall element per second is obtained the rotating speed of motor.Concrete, the rotating speed of supposing motor becomes 1:2 with the rotary speed of impeller and wash bucket, the second specified rotary speed of impeller and wash bucket is 100 revolutions per seconds, corresponding umber of pulse is 600 pulses each second, when the pulse that Hall element output detected when rotary drum washing machine reaches 600 of each seconds, the rotary speed that represents impeller and wash bucket has reached the second specified rotary speed, this hour counter starts timing, and stop as motor power supply, make described motor, described impeller and described wash bucket are simultaneously in moderating process, when the time of timer record reaches the second default duration, detect the umber of pulse of Hall element output each second, by described umber of pulse, obtain impeller and washing machine rotary speed now as the 3rd rotary speed.In practical application, the change frequency of the electromotive force that rotary drum washing machine can also be exported by motor is determined the rotating speed of motor, or lenticular lenses is set on motor, determines the rotating speed of motor by raster count.
Wherein, the described second default duration is predefined, can arrange according to the concrete condition of rotary drum washing machine, and the embodiment of the present invention does not limit this.
Preferably, the rotary drum washing machine that is inner rotor motor for motor, after the impeller of described rotary drum washing machine and wash bucket continue with the second specified rotary speed rotation in the 3rd default duration, stop the inner rotor motor power supply for described rotary drum washing machine, when making to state impeller and wash bucket, in moderating process, and obtain the 3rd rotary speed of described impeller and described wash bucket.
Step 303, according to described the 3rd rotary speed, determine the weight of clothing in described rotary drum washing machine.
Because the motor of described rotary drum washing machine is inner rotor motor, so need belt transmission between the impeller of rotary drum washing machine and inner rotor motor, the rotor of inner rotor motor is at center, make the rotary inertia of described inner rotor motor less, when inner rotor motor drives the impeller of described rotary drum washing machine to rotate, the rotary inertia of motor and impeller is less, if just impeller rotates, it is very short that impeller is decelerated to the zero time from the second specified rotary speed, while there is clothing in described rotary drum washing machine, due to the frictional force impact between clothing and impeller, it is shorter that impeller is decelerated to the zero time from the second specified rotary speed, therefore cannot obtain by obtaining the default duration of impeller deceleration second rotary speed afterwards the weight of clothing.So if the motor of rotary drum washing machine is inner rotor motor, when the clothing in rotary drum washing machine carries out fuzzy weighing, can be so that impeller and wash bucket rotate simultaneously, rotary inertia is larger, and clothing can be followed wash bucket and rotated together, centrifugal force during clothing rotation has further increased rotary inertia, extended the deceleration time of described impeller and wash bucket, therefore can be by impeller and wash bucket the 3rd rotary speed after the second specified rotary speed is decelerated to the second default duration determine the weight of clothing.
When clothing in rotary drum washing machine is more, the rotary inertia of impeller, wash bucket and clothing is larger, and the 3rd rotary speed that therefore described impeller and wash bucket slow down after the second default duration from the second specified rotary speed is larger; When clothing in rotary drum washing machine is less, the rotary inertia of impeller, wash bucket and clothing is less, therefore described impeller and wash bucket the 3rd rotary speed after the default duration of the second specified rotary speed deceleration second is less, so the weight of the clothing in rotary drum washing machine was directly proportional to the described very first time.
Optionally, can be in the control chip of rotary drum washing machine pre-stored rotary speed table corresponding to clothes weight, described rotary speed from the corresponding table record of clothes weight different rotary speed corresponding clothes weight respectively, then according to the 3rd rotary speed, inquire about the rotary speed table corresponding to clothes weight prestoring, can determine the weight of the clothing in rotary drum washing machine.
In practical application, also can be in the control chip of rotary drum washing machine pre-stored acceleration table corresponding to clothes weight, the corresponding table of described acceleration and clothes weight is corresponding, and different acceleration is distinguished corresponding clothes weight, after getting the 3rd rotary speed, can be according to the corresponding relation between rotary speed and acceleration, obtain the second acceleration corresponding to described the 3rd rotary speed, then according to the second acceleration, inquire about acceleration table corresponding to clothes weight, can determine the weight of described clothing.
So, at rotary drum washing machine motor, it is external rotor electric machine, and when rotary drum washing machine is weighed to clothing, first described rotary drum washing machine can be that motor is powered by control circuit, make impeller and described wash bucket described in described driven by motor accelerate rotation to described the second specified rotary speed simultaneously, after reaching the second specified rotary speed, stop as described motor power supply, make described impeller and described wash bucket in moderating process, obtain the 3rd rotary speed of described impeller and described wash bucket, the rotary speed of described impeller and wash bucket after the default duration of moderating process lasting described second that described the 3rd rotary speed is described impeller and wash bucket, described the 3rd rotary speed is non-vanishing, finally can be according to described the 3rd rotary speed, determine the weight of clothing in described rotary drum washing machine.Compared to prior art, fuzzy Weighing method described in the embodiment of the present invention, not needing to experience impeller and wash bucket, from the second specified rotary speed, to continue the speed that is decelerated to be zero process simultaneously, only need impeller and rotary drum washing machine from the second specified rotary speed, to reduce speed now simultaneously, this moderating process continues the second default duration, the first rotary speed getting after the second default duration is non-vanishing, that is to say and be less than impeller and wash bucket by the second default duration from the second specified rotary speed, to be decelerated to speed be zero time used simultaneously, thereby saved the time that described rotary drum washing machine is determined the weight of washing clothes, and then can shorten time of each laundry.
Further, in the motor power supply that is described rotary drum washing machine, make the wash bucket of impeller and described rotary drum washing machine described in described driven by motor accelerate rotation to the second specified rotary speed, described motor can also drive described impeller and described wash bucket in the described the 3rd default duration, to continue to rotate with described the second specified rotary speed simultaneously simultaneously.Example, rotary drum washing machine can also continue as described motor power supply, impeller and wash bucket described in described driven by motor are continued with described the second specified rotary speed rotation in the 3rd default duration, like this can so that the rotary speed of the impeller of rotary drum washing machine and wash bucket stable maintain the second specified rotary speed, avoided the unstable accuracy that reduces described fuzzy Weighing method of speed due to described impeller and wash bucket.
Optionally, described according to described the 3rd rotary speed, before determining the weight of clothing in described rotary drum washing machine, described rotary drum washing machine can also obtain the 4th rotary speed, described the 4th rotary speed is while there is not clothing in described rotary drum washing machine, described impeller and wash bucket are from continue the to slow down rotary speed of described impeller and wash bucket after the described second default duration of the second specified rotary speed, then can, according to the difference of described the 3rd rotary speed and described the 4th rotary speed, determine the weight of described clothing; Or according to the ratio of described the 3rd rotary speed and described the 4th rotary speed, determine the weight of described clothing.In actual applications, if rotary drum washing machine is longer service time, can cause loss comparatively serious, make the frictional force of rotary drum washing machine inside larger, now, if only determine the weight of clothing in rotary drum washing machine by the 3rd rotary speed of impeller and wash bucket, the clothes weight that can make to obtain is greater than the actual weight of clothing, if adopt the difference of described the 3rd rotary speed and described the 4th rotary speed to determine the weight of clothing, can get rid of the impact causing due to rotary drum washing machine factor.The ratio of described the 3rd rotary speed of same employing and described the 4th rotary speed, determines the weight of described clothing, also can get rid of the impact causing due to rotary drum washing machine factor.
In practical application, before rotary drum washing machine dispatches from the factory, the 4th time can be pre-stored in the control chip of rotary drum washing machine, when rotary drum washing machine carries out fuzzy weighing to clothing, can directly from described control chip, obtain for the 4th time.
During initialization, the concrete steps of obtaining the 4th rotary speed are: while there is not clothing in the wash bucket of described rotary drum washing machine, described rotary drum washing machine is that described motor is powered by control circuit, impeller and described wash bucket described in described driven by motor are rotated to described the second specified rotary speed simultaneously, then by control circuit, stop powering for described motor, make described motor, described impeller and described wash bucket are simultaneously in moderating process, the moderating process of obtaining described impeller and described wash bucket continues the rotary speed of described impeller and wash bucket after the described second default duration as the 4th rotary speed.
Optionally, according to the difference of described the 3rd rotary speed and described the 4th rotary speed, while determining the weight of described clothing, the rotary speed difference that can prestore in the control chip of described rotary drum washing machine table corresponding to clothes weight, described rotary speed difference from the corresponding table record of clothes weight different rotary speed difference corresponding clothes weight respectively, then can be according to the difference of described the 3rd rotary speed and described the 4th rotary speed, the rotary speed difference table corresponding to clothes weight prestoring by inquiry, can determine the weight of described clothing.
Optionally, according to the ratio of described the 3rd rotary speed and described the 4th rotary speed, while determining the weight of described clothing, rotary speed ratio table corresponding to clothes weight can prestore in the control chip of described rotary drum washing machine, described rotary speed ratio from the corresponding table record of clothes weight different rotary speed ratio corresponding clothes weight respectively, then can be according to the ratio of described the 3rd rotary speed and described the 4th rotary speed, the rotary speed ratio table corresponding to clothes weight prestoring by inquiry, can determine the weight of described clothing.
Optionally, at described motor, described impeller and described wash bucket are simultaneously before free moderating process, described rotary drum washing machine can also be opened the spraying of described rotary drum washing machine, clothing in described rotary drum washing machine is sprayed water, continue the 4th default duration, increase the weight of clothing, increase the rotary inertia of impeller and wash bucket, at the rotary drum washing machine of inner rotor motor when clothing is weighed, if there is clothing in rotary drum washing machine, in the rotation of impeller and wash bucket in the second specified rotary speed, clothing also can be followed wash bucket rotation to the second specified rotary speed, centrifugal force during clothing rotation has further increased the rotary inertia of impeller and wash bucket, the rotary inertia of the larger increase of weight of clothing is larger.Clothes weight in described rotary drum washing machine hour, by the weight of clothing, be that the rotary inertia that increases of impeller and wash bucket is less, after the second default duration, the impeller obtaining and the 3rd rotary speed of wash bucket may be little with described the 4th rotary speed gap, cannot be according to difference or the ratio of the 3rd rotary speed and the 4th rotary speed, obtain the accurate weight of clothing, so before stopping as motor power supply, described rotary drum washing machine can be opened spraying and continue the 4th default duration, clothing in described rotary drum washing machine is sprayed water, increase described clothing and described wash bucket between frictional force, then obtain the 3rd rotary speed of impeller and wash bucket, the gap of described the 3rd rotary speed and the second specified rotary speed is larger, can determine the weight of described clothing, then rotary drum washing machine is when normal washing, make flooding time shorten the described the 4th default duration, water consumption while having determined equally described clothes washing.
The fuzzy Weighing method that the embodiment of the present invention provides, when the rotary drum washing machine that is inner rotor motor at motor is weighed to clothing, the motor that can be first described rotary drum washing machine by control circuit is powered, make impeller and described wash bucket described in described driven by motor accelerate rotation to described the second specified rotary speed simultaneously, after reaching the second specified rotary speed, stop as described motor power supply, make described impeller and described wash bucket in moderating process, obtain the 3rd rotary speed of described impeller and described wash bucket, the rotary speed of described impeller and wash bucket after the default duration of moderating process lasting described second that described the 3rd rotary speed is described impeller and wash bucket, described the 3rd rotary speed is non-vanishing, finally can be according to described the 3rd rotary speed, determine the weight of clothing in described rotary drum washing machine.Or described in obtaining while there is no clothing in rotary drum washing machine, impeller and wash bucket are after the second specified rotary speed continues to slow down the described second default duration, the 4th rotary speed of described impeller and wash bucket, then according to difference or the ratio of the 3rd rotary speed and the 4th rotary speed, determine the weight of clothing in described rotary drum washing machine.Compared to prior art, fuzzy Weighing method described in the embodiment of the present invention, not needing to experience impeller and wash bucket, from the second specified rotary speed, to continue the speed that is decelerated to be zero process simultaneously, only need impeller and wash bucket from the second specified rotary speed, to reduce speed now simultaneously, this moderating process continues the second default duration, the 3rd rotary speed getting after the second default duration is non-vanishing, that is to say and be less than impeller and wash bucket by the second default duration from the second specified rotary speed, to be decelerated to speed be zero time used simultaneously, thereby saved the time that described rotary drum washing machine is determined the weight of washing clothes, and then can shorten time of each laundry.Further, because described rotary drum washing machine can also be according to difference or the ratio of the 3rd rotary speed and the 4th rotary speed, determine the weight of clothing in described rotary drum washing machine, can get rid of the impact causing due to rotary drum washing machine factor, improved the accuracy of described fuzzy Weighing method.
The embodiment of the present invention provides a kind of rotary drum washing machine 40, and the motor of described rotary drum washing machine 40 is external rotor electric machine, and as shown in Figure 4, described rotary drum washing machine 40 comprises control module 401, acquiring unit 402 and determining unit 403.
Described control module 401 for: control described motor, make the impeller of rotary drum washing machine 40 described in described driven by motor and wash bucket accelerate rotation to the second specified rotary speed simultaneously; Control described motor, make described motor, described impeller and described wash bucket simultaneously in moderating process.
Concrete, the motor that described rotary drum washing machine 40 can be described rotary drum washing machine 40 by control circuit is powered, and then control described inner rotor motor and accelerate to rotate, drive impeller and the wash bucket of described rotary drum washing machine 40 to rotate to the second specified rotary speed simultaneously, described the second specified rotary speed is predefined, can arrange according to the concrete condition of rotary drum washing machine 40, the embodiment of the present invention does not limit this.Then can also stop powering for described inner rotor motor by control circuit, now described motor, impeller and wash bucket be in free deceleration regime.
Described acquiring unit 402, for obtaining the 3rd rotary speed of described impeller and described wash bucket, the rotary speed of described impeller and wash bucket after the default duration of moderating process lasting second that described the 3rd rotary speed is described impeller and wash bucket, the 3rd rotary speed is non-vanishing.
General, acquiring unit 402 can timing when described moderating process starts, and when described impeller and wash bucket moderating process simultaneously continue the second default duration, stops timing, obtains the rotary speed of now impeller and wash bucket as the 3rd rotary speed.
Optionally, the rotary drum washing machine that is inner rotor motor for motor, motor drives impeller and wash bucket to rotate by belt transmission simultaneously, and the rotary speed of impeller equates with the rotating speed of motor or be proportional, can determine by the rotating speed of motor the rotary speed of impeller and wash bucket.Example, described motor can configure Hall element, and motor often turns around, 12 pulses of Hall element output, the umber of pulse that then described rotary drum washing machine can be exported by Hall element per second is obtained the rotating speed of motor.Concrete, the rotating speed of supposing motor becomes 1:2 with the rotary speed of impeller and wash bucket, the second specified rotary speed of impeller and wash bucket is 100 revolutions per seconds, corresponding umber of pulse is 600 pulses each second, when the pulse that Hall element output detected when rotary drum washing machine reaches 600 of each seconds, the rotary speed that represents impeller and wash bucket has reached the second specified rotary speed, this hour counter starts timing, and stop as motor power supply, make described motor, described impeller and described wash bucket are simultaneously in moderating process, when the time of timer record reaches the second default duration, acquiring unit 402 detects the umber of pulse of Hall element output each second, by described umber of pulse, obtain impeller and washing machine rotary speed now as the 3rd rotary speed.In practical application, the change frequency of the electromotive force that acquiring unit 402 can also be exported by motor is determined the rotating speed of motor, or lenticular lenses is set on motor, determines the rotating speed of motor by raster count.
Determining unit 403, for according to described the 3rd rotary speed, determines the weight of clothing in described rotary drum washing machine 40.
Because the motor of described rotary drum washing machine 40 is inner rotor motor, so need belt transmission between the impeller of rotary drum washing machine 40 and inner rotor motor, the rotor of inner rotor motor is at center, make the rotary inertia of described inner rotor motor less, when inner rotor motor drives the impeller of described rotary drum washing machine 40 to rotate, the rotary inertia of motor and impeller is less, if just impeller rotates, it is very short that impeller is decelerated to the zero time from the second specified rotary speed, while there is clothing in described rotary drum washing machine 40, due to the frictional force impact between clothing and impeller, it is shorter that impeller is decelerated to the zero time from the second specified rotary speed, therefore cannot obtain by obtaining the default duration of impeller deceleration second rotary speed afterwards the weight of clothing.So if the motor of rotary drum washing machine 40 is inner rotor motor, when the clothing in rotary drum washing machine carries out fuzzy weighing, can be so that impeller and wash bucket rotate simultaneously, rotary inertia is larger, and clothing can be followed wash bucket and rotated together, centrifugal force during clothing rotation has further increased rotary inertia, extended the deceleration time of described impeller and wash bucket, therefore can be by impeller and wash bucket the 3rd rotary speed after the second specified rotary speed is decelerated to the second default duration determine the weight of clothing.
When clothing in rotary drum washing machine 40 is more, the rotary inertia of impeller, wash bucket and clothing is larger, and the 3rd rotary speed that therefore described impeller and wash bucket slow down after the second default duration from the second specified rotary speed is larger; When clothing in rotary drum washing machine 40 is less, the rotary inertia of impeller, wash bucket and clothing is less, therefore described impeller and wash bucket the 3rd rotary speed after the default duration of the second specified rotary speed deceleration second is less, so the weight of the clothing in rotary drum washing machine 40 was directly proportional to the described very first time.
Optionally, can be in the control chip of rotary drum washing machine pre-stored rotary speed table corresponding to clothes weight, described rotary speed from the corresponding table record of clothes weight different rotary speed corresponding clothes weight respectively, then according to the 3rd rotary speed, inquire about the rotary speed table corresponding to clothes weight prestoring, can determine the weight of the clothing in rotary drum washing machine 40.
In practical application, also can be in the control chip of rotary drum washing machine pre-stored acceleration table corresponding to clothes weight, the corresponding table of described acceleration and clothes weight is corresponding, and different acceleration is distinguished corresponding clothes weight, after getting the 3rd rotary speed, can be according to the corresponding relation between rotary speed and acceleration, obtain the second acceleration corresponding to described the 3rd rotary speed, then according to the second acceleration, inquire about acceleration table corresponding to clothes weight, can determine the weight of described clothing.
So, at rotary drum washing machine motor, it is external rotor electric machine, and when rotary drum washing machine is weighed to clothing, first described rotary drum washing machine can be that motor is powered by control module, make impeller and described wash bucket described in described driven by motor accelerate rotation to described the second specified rotary speed simultaneously, after reaching the second specified rotary speed, stop as described motor power supply, make described impeller and described wash bucket in moderating process, then by acquiring unit, obtain the 3rd rotary speed of described impeller and described wash bucket, the rotary speed of described impeller and wash bucket after the default duration of moderating process lasting described second that described the 3rd rotary speed is described impeller and wash bucket, described the 3rd rotary speed is non-vanishing, finally can be by determining unit according to described the 3rd rotary speed, determine the weight of clothing in described rotary drum washing machine.Compared to prior art, rotary drum washing machine described in the embodiment of the present invention, not needing to experience impeller and wash bucket, from the second specified rotary speed, to continue the speed that is decelerated to be zero process simultaneously, only need impeller and rotary drum washing machine from the second specified rotary speed, to reduce speed now simultaneously, this moderating process continues the second default duration, the first rotary speed getting after the second default duration is non-vanishing, that is to say and be less than impeller and wash bucket by the second default duration from the second specified rotary speed, to be decelerated to speed be zero time used simultaneously, thereby saved the time that described rotary drum washing machine is determined the weight of washing clothes, and then can shorten time of each laundry.
Further, rotary drum washing machine 40 can also be controlled described motor by described control module 401, makes impeller described in described driven by motor in the described the 3rd default duration, continue to rotate with described the second specified rotary speed with described wash bucket simultaneously.Example, rotary drum washing machine 40 can also continue as described motor by control module 401 and power, impeller and wash bucket described in described driven by motor are continued with described the second specified rotary speed rotation in the 3rd default duration, like this can so that the specified rotary speed of the impeller of rotary drum washing machine and wash bucket stable maintain the second specified rotary speed, avoided the unstable accuracy that reduces described fuzzy Weighing method of speed due to described impeller and wash bucket.
Example, described acquiring unit 402 also for: obtain the 4th rotary speed, described the 4th rotary speed is while there is not clothing in described rotary drum washing machine 40, and described impeller and wash bucket are from continue the to slow down rotary speed of described impeller and wash bucket after the described second default duration of the second specified rotary speed.
In practical application, before rotary drum washing machine 40 dispatches from the factory, the 4th time can be pre-stored in the control chip of rotary drum washing machine 40, when 40 pairs of clothings of rotary drum washing machine carry out fuzzy weighing, can directly from described control chip, obtain for the 4th time.
During initialization, the concrete steps of obtaining the 4th rotary speed are: while there is not clothing in the wash bucket of described rotary drum washing machine 40, described rotary drum washing machine 40 is that described motor is powered by control circuit, impeller and described wash bucket described in described driven by motor are rotated to described the second specified rotary speed simultaneously, then by control circuit, stop powering for described motor, make described motor, described impeller and described wash bucket are simultaneously in moderating process, the moderating process of obtaining described impeller and described wash bucket continues the rotary speed of described impeller and wash bucket after the described second default duration as the 4th rotary speed.
Described determining unit 403 specifically for: according to the difference of described the 3rd rotary speed and described the 4th rotary speed, determine the weight of described clothing; Or according to the ratio of described the 3rd rotary speed and described the 4th rotary speed, determine the weight of described clothing.
Optionally, according to the difference of described the 3rd rotary speed and described the 4th rotary speed, while determining the weight of described clothing, the rotary speed difference that can prestore in the control chip of described rotary drum washing machine 40 table corresponding to clothes weight, described rotary speed difference from the corresponding table record of clothes weight different rotary speed difference corresponding clothes weight respectively, then can be according to the difference of described the 3rd rotary speed and described the 4th rotary speed, the rotary speed difference table corresponding to clothes weight prestoring by inquiry, can determine the weight of described clothing.
Optionally, according to the ratio of described the 3rd rotary speed and described the 4th rotary speed, while determining the weight of described clothing, rotary speed ratio table corresponding to clothes weight can prestore in the control chip of described rotary drum washing machine 40, described rotary speed ratio from the corresponding table record of clothes weight different rotary speed ratio corresponding clothes weight respectively, then can be according to the ratio of described the 3rd rotary speed and described the 4th rotary speed, the rotary speed ratio table corresponding to clothes weight prestoring by inquiry, can determine the weight of described clothing.
Optionally, as shown in Figure 5, described rotary drum washing machine 40 also comprises water spray unit 404, for the clothing water spray to described rotary drum washing machine 40, continue the 4th default duration, increase the weight of clothing, increase the rotary inertia of impeller and wash bucket, at the rotary drum washing machine 40 of inner rotor motor when clothing is weighed, if there is clothing in rotary drum washing machine 40, in the rotation of impeller and wash bucket in the second specified rotary speed, clothing also can be followed wash bucket rotation to the second specified rotary speed, centrifugal force during clothing rotation has further increased the rotary inertia of impeller and wash bucket, the rotary inertia of the larger increase of weight of clothing is larger, clothes weight in described rotary drum washing machine 40 hour, by the weight of clothing, be that the rotary inertia that increases of impeller and wash bucket is less, after the second default duration, the impeller obtaining and the 3rd rotary speed of wash bucket may be little with described the 4th rotary speed gap, cannot be according to difference or the ratio of the 3rd rotary speed and the 4th rotary speed, obtain the accurate weight of clothing, so before stopping as motor power supply, described rotary drum washing machine 40 can be opened spraying and continue the 4th default duration, clothing in described rotary drum washing machine 40 is sprayed water, increase described clothing and described wash bucket between frictional force, then obtain the 3rd rotary speed of impeller and wash bucket, the gap of described the 3rd rotary speed and the second specified rotary speed is larger, can determine the weight of described clothing, then rotary drum washing machine is when normal washing, make flooding time shorten the described the 4th default duration, water consumption while having determined equally described clothes washing.
It is the rotary drum washing machine of inner rotor motor that the embodiment of the present invention provides a kind of motor, when clothing is weighed, the motor that can be first described rotary drum washing machine by control module is powered, make impeller and described wash bucket described in described driven by motor accelerate rotation to described the second specified rotary speed simultaneously, after reaching the second specified rotary speed, stop as described motor power supply, make described impeller and described wash bucket in moderating process, by acquiring unit, obtain the 3rd rotary speed of described impeller and described wash bucket, the rotary speed of described impeller and wash bucket after the default duration of moderating process lasting described second that described the 3rd rotary speed is described impeller and wash bucket, described the 3rd rotary speed is non-vanishing, finally can be by determining unit according to described the 3rd rotary speed, determine the weight of clothing in described rotary drum washing machine.Or described in obtaining while there is no clothing in rotary drum washing machine by acquiring unit, impeller and wash bucket are after the second specified rotary speed continues to slow down the described second default duration, the 4th rotary speed of described impeller and wash bucket, then by determining unit according to difference or the ratio of the 3rd rotary speed and the 4th rotary speed, determine the weight of clothing in described rotary drum washing machine.Compared to prior art, rotary drum washing machine described in the embodiment of the present invention, not needing to experience impeller and wash bucket, from the second specified rotary speed, to continue the speed that is decelerated to be zero process simultaneously, only need impeller and wash bucket from the second specified rotary speed, to reduce speed now simultaneously, this moderating process continues the second default duration, the 3rd rotary speed getting after the second default duration is non-vanishing, that is to say and be less than impeller and wash bucket by the second default duration from the second specified rotary speed, to be decelerated to speed be zero time used simultaneously, thereby saved the time that described rotary drum washing machine is determined the weight of washing clothes, and then can shorten time of each laundry.Further, because described rotary drum washing machine can also be according to difference or the ratio of the 3rd rotary speed and the 4th rotary speed, determine the weight of clothing in described rotary drum washing machine, can get rid of the impact causing due to rotary drum washing machine factor, improved the accuracy of described fuzzy Weighing method.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.

Claims (14)

1. a fuzzy Weighing method, is characterized in that, for rotary drum washing machine, the motor of described rotary drum washing machine is external rotor electric machine, and described fuzzy Weighing method comprises:
Described in described driven by motor, the impeller of rotary drum washing machine accelerates rotation to the first specified rotary speed;
Described motor and described impeller are simultaneously in moderating process, obtain the first rotary speed of described impeller, the moderating process that described the first rotary speed is described impeller continues the first default duration rotary speed of described impeller afterwards, and described the first rotary speed is non-vanishing;
According to described the first rotary speed, determine the weight of clothing in described rotary drum washing machine.
2. fuzzy Weighing method according to claim 1, is characterized in that, in the impeller acceleration of rotary drum washing machine described in described driven by motor, rotates to the first specified rotary speed, and described method also comprises:
Described in described driven by motor, impeller continues with described the first specified rotary speed rotation in the second default duration.
3. fuzzy Weighing method according to claim 1 and 2, is characterized in that, described, according to described the first rotary speed, before determining the weight of clothing in described rotary drum washing machine, described method also comprises:
Obtain the second rotary speed, described the second rotary speed is while there is not clothing in described rotary drum washing machine, and described impeller continue to slow down from the first specified rotary speed after the described first default duration, the rotary speed of described impeller;
Described according to described the first rotary speed, determine that the weight of clothing in described rotary drum washing machine comprises:
According to the difference of described the first rotary speed and described the second rotary speed, determine the weight of described clothing;
Or according to the ratio of described the first rotary speed and described the second rotary speed, determine the weight of described clothing.
4. a rotary drum washing machine, the motor of described rotary drum washing machine is external rotor electric machine, it is characterized in that,
Described rotary drum washing machine comprises control module, for:
Control described motor, make the impeller of rotary drum washing machine described in described driven by motor accelerate rotation to the first specified rotary speed;
Control described motor, make described motor and described impeller simultaneously in moderating process;
Described rotary drum washing machine also comprises acquiring unit, and for obtaining the first rotary speed of described impeller, the moderating process that described the first rotary speed is described impeller continues the first default duration rotary speed of described impeller afterwards, and described the first rotary speed is non-vanishing;
Determining unit, for according to described the first rotary speed, determines the weight of clothing in described rotary drum washing machine.
5. rotary drum washing machine according to claim 4, is characterized in that,
Described control module also for:
Control described motor, impeller continues with described the first specified rotary speed rotation in the second default duration described in described driven by motor.
6. according to the rotary drum washing machine described in claim 4 or 5, it is characterized in that,
Described acquiring unit also for:
Obtain the second rotary speed, described the second rotary speed is while there is not clothing in described rotary drum washing machine, and described impeller continue to slow down from the first specified rotary speed after the described first default duration, the rotary speed of described impeller;
Described determining unit specifically for:
According to the difference of described the first rotary speed and described the second rotary speed, determine the weight of described clothing;
Or according to the ratio of described the first rotary speed and described the second rotary speed, determine the weight of described clothing.
7. a fuzzy Weighing method, is characterized in that, for rotary drum washing machine, the motor of described rotary drum washing machine is inner rotor motor, and described fuzzy Weighing method comprises:
Described in described driven by motor, the impeller of rotary drum washing machine and wash bucket accelerate rotation to the second specified rotary speed simultaneously;
Described motor, described impeller and described wash bucket are simultaneously in moderating process, obtain the 3rd rotary speed of described impeller and described wash bucket, the rotary speed of described impeller and wash bucket after the default duration of moderating process lasting second that described the 3rd rotary speed is described impeller and wash bucket, the 3rd rotary speed is non-vanishing;
According to described the 3rd rotary speed, determine the weight of clothing in described rotary drum washing machine.
8. fuzzy Weighing method according to claim 7, is characterized in that, at the impeller of rotary drum washing machine described in described driven by motor and wash bucket, accelerates rotation to the second specified rotary speed simultaneously, and described method also comprises:
Described in described driven by motor, impeller and described wash bucket continue with described the second specified rotary speed rotation simultaneously in the described the 3rd default duration.
9. according to the fuzzy Weighing method described in claim 7 or 8, it is characterized in that, described, according to described the 3rd rotary speed, before determining the weight of clothing in described rotary drum washing machine, described method also comprises:
Obtain the 4th rotary speed, described the 4th rotary speed is while there is not clothing in described rotary drum washing machine, and described impeller and wash bucket are from continue the to slow down rotary speed of described impeller and wash bucket after the described second default duration of the second specified rotary speed;
Described according to described the 3rd rotary speed, determine that the weight of clothing in described rotary drum washing machine comprises:
According to the difference of described the 3rd rotary speed and described the 4th rotary speed, determine the weight of described clothing;
Or according to the ratio of described the 3rd rotary speed and described the 4th rotary speed, determine the weight of described clothing.
10. according to the fuzzy Weighing method described in claim 7 to 9 any one claim, it is characterized in that, in described motor, described impeller and described wash bucket while, before moderating process, described method also comprises:
Clothing in described rotary drum washing machine is sprayed water, and continues the 4th default duration.
11. 1 kinds of rotary drum washing machines, the motor of described rotary drum washing machine is inner rotor motor, it is characterized in that,
Described rotary drum washing machine comprises control module, and described control module is used for:
Control described motor, make the impeller of rotary drum washing machine described in described driven by motor and wash bucket accelerate rotation to the second specified rotary speed simultaneously;
Control described motor, make described motor, described impeller and described wash bucket simultaneously in moderating process;
Described rotary drum washing machine also comprises acquiring unit, for obtaining the 3rd rotary speed of described impeller and described wash bucket, the rotary speed of described impeller and wash bucket after the default duration of moderating process lasting second that described the 3rd rotary speed is described impeller and wash bucket, the 3rd rotary speed is non-vanishing;
Determining unit, for according to described the 3rd rotary speed, determines the weight of clothing in described rotary drum washing machine.
12. rotary drum washing machines according to claim 11, is characterized in that,
Described control module also for:
Control described motor, impeller and described wash bucket described in described driven by motor are continued with described the second specified rotary speed rotation simultaneously in the described the 3rd default duration.
13. according to the rotary drum washing machine described in claim 11 or 12, it is characterized in that,
Described acquiring unit also for:
Obtain the 4th rotary speed, described the 4th rotary speed is while there is not clothing in described rotary drum washing machine, and described impeller and wash bucket are from continue the to slow down rotary speed of described impeller and wash bucket after the described second default duration of the second specified rotary speed;
Described determining unit specifically for:
According to the difference of described the 3rd rotary speed and described the 4th rotary speed, determine the weight of described clothing;
Or according to the ratio of described the 3rd rotary speed and described the 4th rotary speed, determine the weight of described clothing.
14. according to claim 11 to the rotary drum washing machine described in 13 any one claims, it is characterized in that, described rotary drum washing machine also comprises water spray unit, for:
Clothing in described rotary drum washing machine is sprayed water, and continues the 4th default duration.
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