CN104074025B - A kind of washing methods of washing machine - Google Patents

Abstract

The invention discloses a washing method of a washing machine. The operation mode of the washing machine is selected by measuring the load of the washing machine, and the power on and off of the magneto-rheological fluid clutch is adjusted so that the inner barrel and the pulsator of the washing machine are simultaneously driven and the pulsator of the washing machine is driven simultaneously. Drive alone to achieve the effect of washing clothes. The washing method of a washing machine of the present invention is designed for a washing machine equipped with a magneto-rheological fluid clutch, and can control the magneto-rheological fluid clutch according to different washing machine operating programs, so that the inner barrel and the wave wheel can be indirectly driven and waved at the same time. The wheels are driven separately to achieve the effect of dual-power washing. At the same time, when the washing volume of clothes is small, only the pulsator is driven, which saves energy and avoids the rotation of the inner tub to wear the clothes.

Description

Washing method of a washing machine

technical field

The invention relates to the field of washing machines, and specifically provides a washing method for washing machines.

Background technique

The structure of a traditional washing machine is composed of an inner tub, an outer tub, a stirring device (such as a pulsator), a transmission system, a control system, and subjects. When doing laundry, the inner tub does not rotate, and the stirring device rotates in forward and reverse directions to drive the water in the tub and the clothes to rotate to realize washing. This washing method has been tested in practice and found to have some defects: 1. Only relying on the rotation of the stirring device to generate water flow, the washing form is single, and the washing ratio is difficult to improve. 2. The strength of the water flow is weak, and the clothes are easy to be entangled. In order to overcome the above-mentioned defects, some washing machine manufacturers have designed a "rotary barrel" washing machine. The washing method is that the inner barrel is in a free state. Reverse rotation, so as to achieve the purpose of "rubbing clothes". But this method still has deficiencies, because the inner tub is not driven by power, the rotation force of the inner tub is small, and the stirring device only rotates forward and reverse at the bottom of the inner tub, the effect of "rubbing clothes" is not large, and the washing effect is not significantly improved, and it still cannot be very effective. A good solution to the problem of obligation entanglement. In order to overcome the above defects, a washing machine with two-way washing has been developed. The washing machine is equipped with a power transmission mechanism for the inner tub. When washing, the inner tub and the agitating device are driven by power to rotate in opposite directions, so as to improve the effect of "rubbing clothes". However, if the existing inner tub and pulsator structure is still used on the washing machine, it will not be very targeted. Since the pulsator is located at the bottom of the inner tub, the water flow form is single, and the water flow intensity is very insufficient, making it difficult to form a tumbling water flow. The washing effect is difficult to be higher, and the gap between the inner tub and the pulsator is easy to fall into foreign matter.

With the birth of the dual-power washing machine, the above problems were solved. Most of the traditional dual-power washing machines use mechanical clutches, which have certain friction and friction loss. In addition, the clutch devices of some direct-drive washing machines are electromagnetic clutches, and some The washing machine adopts the buoyancy clutch method, and the inner tub is suspended in the outer tub when washing with water. The washing machines of the above several clutch modes all take up relatively large volume due to the limitation of their mechanical structure, and are complicated in structure, expensive in cost and easy to be damaged. The clutch is arranged between the inner and outer tubs, and the large mechanical structure makes the space between the inner and outer tubs too large, which makes the volume of the washing machine with the same washing volume too large, and at the same time, the friction loss reduces the service life of the washing machine.

A new type of clutch device, which only needs a small amount of magnetorheological fluid and the clutch plate on the pulsator shaft to achieve the effect of clutching. Magneto rheological fluid (MR fluid for short) is made of high magnetic permeability, low hysteresis It is a controllable fluid, which can realize the change of damping. It has the characteristics of high strength, low viscosity, small energy demand and good temperature stability. Under the action of external magnetic field, It can change from Newtonian fluid to Bingham plastic body or viscoelastic body with higher shear yield stress in a millisecond instant, and this transformation is continuous and reversible.

The indicators that magnetorheological fluid meets are:

(1) The zero magnetic field viscosity is low so that it has a larger adjustable range when it has the same shear yield strength growth under the action of a magnetic field.

(2) The shear yield strength under strong magnetic field is high, at least 20-30Kpa, which is one of the main indicators to measure the characteristics of magnetorheological fluid.

(3) The interference of impurities is small to increase its application range.

(4) The temperature range is wide, that is, it has extremely high stability in a wide temperature range.

(5) The response speed is fast, preferably at the millisecond level, so that when the magneto-rheological fluid shock absorber is used as an active and semi-active controller, there is basically no delay problem.

(6) It has good anti-sedimentation property, and there should be basically no stratification during long-term storage.

(7) The energy consumption is low, and a larger shear yield strength can be produced under a weaker magnetic field.

(8) Non-toxic, non-volatile, and odorless, which is determined by its application field.

If the magneto-rheological fluid clutch is applied to the washing machine, the distance between the inner and outer cylinders of the washing machine can be greatly reduced, and the clutch control efficiency of the washing machine can be increased, which solves the disadvantage of wear and tear of the existing mechanical clutch.

Contents of the invention

The object of the present invention is to provide a washing method for a washing machine provided with a magneto-rheological fluid clutch, and a comprehensive washing method and program design is carried out for the magneto-rheological fluid clutch provided on the washing machine.

In order to achieve the purpose of the above invention, the technical solution adopted in the present invention is: a washing method of a washing machine, by measuring the load of the washing machine to select the operating mode of the washing machine, and adjusting the power on and off of the magneto-rheological fluid clutch to make the inner barrel of the washing machine Simultaneously driven with the pulsator and driven separately by the pulsator of the washing machine to achieve the effect of washing clothes.

The method for measuring the load of the washing machine is to measure the load of the washing machine through the water level of the washing machine selected by the user or measure the load of the washing machine through the weight of the clothes.

The clockwise or counterclockwise rotation time of the pulsator of the washing machine and the on-off time of the magneto-rheological fluid clutch of the washing machine are different in the different operating modes.

The operation mode is divided into dehydration mode and washing mode according to the washing process, and the washing mode is divided into dual power mode and normal mode according to the load of the washing machine.

In the dehydration mode, the magneto-rheological fluid clutch is energized and closed, and the inner barrel and the pulsator rotate simultaneously.

In the above dual power mode, the driving device of the washing machine drives the pulsator forward to rotate for n seconds. After n seconds, the magneto-rheological fluid clutch is closed to connect the pulsator and the inner tub as a whole while rotating forward for m seconds. After m seconds, the magnetic The rheological fluid clutch is powered off and opened, and at the same time, the driving device drives the pulsator to rotate reversely for n seconds, and the inner barrel continues to rotate forward due to inertia. After n seconds, the magneto-rheological fluid clutch is closed to connect the pulsator and the inner barrel and rotate in reverse at the same time m Seconds, after the end of m seconds, the magneto-rheological fluid clutch is released, and the inner barrel continues to rotate in reverse due to inertia, and this process is repeated until the end of the washing time.

In the normal mode, the driving device of the washing machine intermittently drives the pulsator to rotate forwardly for t seconds and reversely for t seconds, and the magneto-rheological fluid clutch is always in a power-off state.

The method for selecting the operation mode of the washing machine is to first determine whether the user selects the washing mode or the dehydration mode, if it is the washing mode, determine the load of the washing machine, and if the load of the washing machine is less than a quarter of the rated load of the washing machine, select the normal washing mode, Otherwise select dual power wash mode.

The method for selecting the operation mode of the washing machine is as follows: firstly, it is judged that the washing mode or dehydration mode selected by the user is selected; if it is the washing mode, then the water level of the washing machine selected by the user is judged; Choose normal washing mode, otherwise choose dual power mode.

A washing method for a washing machine, comprising the steps of:

1) Measure the load of the washing machine by the water level of the washing machine selected by the user or measure the load of the washing machine by the weight of the clothes;

2) Automatically select the operating mode of the washing machine according to the measured washing machine load;

3) If it is in the dehydration mode, the magneto-rheological fluid clutch is energized and closed, and the inner barrel and the pulsator rotate at the same time;

4) If it is the washing mode, select the dual-power mode or normal mode according to the water level or the weight of the clothes. In the dual-power mode, the driving device of the washing machine drives the pulsator to rotate forward for n seconds. After n seconds, the magneto-rheological fluid clutch closes and the pulsator and The inner barrel is connected as one and rotates forward for m seconds. After m seconds, the magneto-rheological fluid clutch is powered off and released. At the same time, the driving device drives the pulsator to rotate in reverse for n seconds. The inner barrel continues to rotate forward due to inertia. The liquid clutch is closed to connect the pulsator and the inner tub as a whole and rotate reversely for m seconds. After the end of m seconds, the magneto-rheological fluid clutch is opened, and the inner tub continues to rotate in reverse due to inertia. Repeat this process until the end of the washing time;

5) In the normal mode, the driving device of the washing machine intermittently drives the pulsator to rotate forward for t seconds and reverse for t seconds, and the magneto-rheological fluid clutch is always in a power-off state.

The washing method of a washing machine of the present invention is designed for a washing machine equipped with a magneto-rheological fluid clutch, and can control the magneto-rheological fluid clutch according to different washing machine operating programs, so that the inner barrel and the wave wheel can be indirectly driven and waved at the same time. The wheels are driven separately to achieve the effect of dual-power washing. At the same time, when the washing volume of clothes is small, only the pulsator is driven, which saves energy and avoids the rotation of the inner tub to wear the clothes.

Description of drawings

Fig. 1 is a schematic diagram of a washing machine provided with a magneto-rheological fluid clutch of the present invention;

Fig. 2 is a flowchart of a washing method of a washing machine according to the present invention.

1. Inner barrel 2. Outer barrel 3. Pulse wheel 4. Clutch 5. Power shaft 6. Fixed sleeve 7. Clutch plate 8. Positive electromagnet 9. Negative electromagnet 10. Cavity 11. Magnetorheological fluid

detailed description

A magneto-rheological fluid clutch 4 is set between the inner tub 1 and the outer tub 2 of the washing machine to intermittently drive the pulsator 3 and the inner tub 1 to rotate simultaneously and the pulsator 3 to rotate independently.

The magneto-rheological fluid clutch includes a columnar power shaft 5, a cylindrical fixed sleeve 6 sleeved on the power shaft, and a circular clutch plate 7 arranged inside the fixed sleeve 6 and fixedly connected with the power shaft. The fixed sleeve 6 is provided with a cavity 10 filled with a magneto-rheological fluid 11 , and the magnetorheological fluid 11 surrounds the clutch plate 7 . The clutch plate 7 is sheathed on the power shaft 5 , and the power shaft 5 drives the clutch plate 7 to rotate in the cavity 10 .

A pair of positive electromagnets 8 and negative electromagnets 9 with opposite magnetic poles are arranged on the outside of the fixed sleeve 6, and a spacer is arranged between the positive electromagnets 8 and the negative electromagnets 9. The cavity 10 where the magneto-rheological fluid is located by the lines of magnetic force cutting is oppositely arranged.

The power shaft 5 of the magneto-rheological fluid clutch 4 is connected with the output shaft of the driving motor of the washing machine, the output end of the power shaft is connected with the input shaft of the pulsator 3, and the fixed sleeve 6 is connected with the input shaft of the inner barrel 1. The power line of positive electromagnet 8 and negative electromagnet 9 is connected with the controller of the control positive and negative electromagnet on-off power on the washing machine. The positive electromagnet 8 and the negative electromagnet 9 are relatively arranged on both sides of the cavity, parallel to the bottom surface of the inner and outer tubs of the washing machine, and close to the inner tub 1 or the outer tub 2 of the washing machine. The positive electromagnet 8 and the negative electromagnet 9 are relatively arranged on both sides of the cavity, parallel to the vertical planes of the inner and outer tubs of the washing machine.

The above-mentioned magneto-rheological fluid clutch may be a cylindrical magneto-rheological fluid clutch 4 or a disc-shaped magneto-rheological fluid clutch 4 . In order to save the space between the inner and outer barrels of the washing machine, the capacity of the washing machine is increased, and the space of the washing machine is saved.

A washing method for a washing machine provided with a magneto-rheological fluid clutch. The operating mode of the washing machine is selected by measuring the load of the washing machine, and the inner tub 1 and the pulsator 3 of the washing machine are activated by adjusting the power on and off of the magneto-rheological fluid clutch 4 . Simultaneously driven and driven separately by the pulsator 3 of the washing machine to achieve the effect of washing clothes.

The method of measuring the load of the washing machine is to measure the load of the washing machine through the water level of the washing machine selected by the user or to measure the load of the washing machine through the weight of laundry. The operation mode is the corresponding clockwise or counterclockwise rotation time of the pulsator of the washing machine and the on-off time of the magneto-rheological fluid clutch of the washing machine set under different loads of the washing machine. The operation mode is divided into dehydration mode and washing mode according to the washing process, and the washing mode is divided into dual power mode and normal mode according to the load of the washing machine. In the dehydration mode, the magneto-rheological fluid clutch 4 is energized and closed, and the inner barrel 1 and the pulsator 3 rotate simultaneously.

In the dual power mode, the driving device of the washing machine drives the pulsator 3 to rotate forward for n seconds. After n seconds, the magneto-rheological fluid clutch 4 is closed to connect the pulsator and the inner tub as a whole while rotating forward for m seconds. After m seconds, the magnetic flow The variable fluid clutch is powered off and opened, and at the same time, the driving device drives the pulsator 3 to rotate in the reverse direction for n seconds, and the inner barrel 1 continues to rotate forward due to inertia. Rotate for m seconds, after the end of m seconds, the magneto-rheological fluid clutch 4 is released, and the inner tub 1 continues to rotate in the opposite direction due to inertia, repeating this process until the end of the washing time.

In the normal mode, the driving device of the washing machine intermittently drives the pulsator to rotate forwardly for t seconds and reversely for t seconds, and the magneto-rheological fluid clutch 4 is always in a power-off state.

The method of selecting the running mode of the washing machine is to first determine whether the user chooses the washing mode or the dehydrating mode. If it is the washing mode, determine the load of the washing machine. If the washing machine load is less than a quarter of the rated load of the washing machine, select the normal washing mode, otherwise select Dual power wash mode.

The method for selecting the running mode of the washing machine is to first determine whether the user selects the washing mode or the dehydrating mode. If it is the washing mode, then determine the water level of the washing machine selected by the user. If the water level is low or less than a quarter of the rated water level, then select normal. Washing mode, otherwise choose dual power mode.

A washing method for a washing machine, comprising the steps of:

1) Measure the load of the washing machine by the water level of the washing machine selected by the user or measure the load of the washing machine by the weight of the clothes;

2) Automatically select the operating mode of the washing machine according to the measured washing machine load;

3) If it is in the dehydration mode, the magneto-rheological fluid clutch is energized and closed, and the inner barrel 1 and the pulsator 3 rotate at the same time;

4) If it is the washing mode, select the dual-power mode or the normal mode according to the water level or the weight of the clothes. In the dual-power mode, the driving device of the washing machine drives the pulsator forward for 3 rotations for n seconds. After n seconds, the magneto-rheological fluid clutch 4 closes and the pulsator The wheel and the inner barrel are connected together and rotate forward for m seconds at the same time. After the end of m seconds, the magneto-rheological fluid clutch is powered off and released. At the same time, the driving device drives the pulsator to rotate in the reverse direction for n seconds. The rheological fluid clutch is closed to connect the pulsator and the inner barrel and rotate in reverse for m seconds at the same time. After the end of m seconds, the magneto-rheological fluid clutch is opened, and the inner barrel continues to rotate in reverse due to inertia. Repeat this process until the end of the washing time;

5) In the normal mode, the driving device of the washing machine intermittently drives the pulsator to rotate forward for t seconds and reverse for t seconds, and the magneto-rheological fluid clutch is always in a power-off state.

When the user is in use, the clothes between the users are put into the washing bucket, and the washing machine first measures the weight of the clothes. At the same time, the user selects the washing mode. If it is the dehydration mode, the washing machine first opens the drain valve, and after a period of waiting time set by the washing machine, The driving device drives the inner tub and the pulsator of the washing machine to enter the dehydration mode. At this time, the magneto-rheological fluid clutch is energized, and the magnetorheological fluid inside the clutch becomes solid. While driving the pulsator to rotate, the inner barrel rotates with the pulsator, so that it runs until the dehydration time set in the washing machine is completed.

If the user selects the washing mode, it is first judged whether it is the dual power mode or the normal mode according to the water level selected by the user. If the user selects a low water level or less than a quarter of the rated water level, the normal washing mode is selected, otherwise the dual power mode is selected.

In the normal mode, the driving device of the washing machine intermittently drives the pulsator 3 to rotate forwardly for t seconds and reversely for t seconds, and the magneto-rheological fluid clutch 4 is always in a power-off state.

If the user selects a medium-high water level or greater than a quarter of the rated water level, or the weight of the clothes exceeds a certain quality, the washing machine selects the dual-power mode to wash the clothes. In the dual-power mode, the driving device of the washing machine drives the pulsator forward for 3 rotations for n seconds After n seconds, the magneto-rheological fluid clutch 4 is closed to connect the pulsator 3 and the inner barrel 1 and rotate forward for m seconds at the same time. After m seconds, the magneto-rheological fluid clutch 4 is powered off and opened, and the driving device drives the pulsator 3 to reverse Rotate to n seconds, the inner barrel 1 continues to rotate forward due to inertia, and after n seconds, the magneto-rheological fluid clutch 4 is closed to connect the pulsator and the inner barrel as a whole while rotating in the opposite direction for m seconds, and the magnetorheological fluid clutch 4 is opened after m seconds , the inner tub 1 continues to rotate in reverse due to inertia, repeating this process until the end of the washing time.

The washing method of this kind of washing machine is designed for washing machines equipped with magneto-rheological fluid clutches. It can control the magneto-rheological fluid clutches according to different washing machine operating procedures, so that the inner tub and the pulsator can be driven indirectly simultaneously and the pulsator can be driven separately. , to achieve the effect of dual-power washing. At the same time, when the amount of laundry is small, only the pulsator is driven to save energy while avoiding the rotation of the inner tub to wear the clothes.

The implementation in the above-mentioned examples is only a description of the preferred embodiments of the present invention, and is not intended to limit the concept and scope of the present invention. Various changes and improvements made belong to the protection scope of the present invention.

Claims (9)

1. A washing method of a washing machine, characterized in that: the operating mode of the washing machine is selected by measuring the load of the washing machine, the on-off power of the magnetorheological fluid clutch is adjusted so that the inner tub and the pulsator of the washing machine are driven simultaneously and the The pulsator is driven separately to achieve the effect of washing clothes; the rotation time of the pulsator of the washing machine in the clockwise or counterclockwise direction and the power-on and power-off time of the magneto-rheological fluid clutch of the washing machine are different under different operating modes. 2. The washing method of a washing machine according to claim 1, characterized in that: the method of measuring the load of the washing machine is to measure the load of the washing machine through the water level of the washing machine selected by the user or to measure the load of the washing machine through the weight of the clothes. 3. The washing method of a washing machine according to claim 1, wherein the operation mode is divided into a dehydration mode and a washing mode according to the washing process, and the washing mode is divided into a dual power mode and a washing mode according to the load of the washing machine. normal mode. 4. The washing method of a washing machine according to claim 3, characterized in that: in the dehydration mode, the magneto-rheological fluid clutch is energized and closed, and the inner tub and the pulsator rotate simultaneously until the running time ends. 5. The washing method of a washing machine according to claim 3, characterized in that: in the dual power mode, the driving device of the washing machine drives the pulsator forward to rotate for n seconds, and the magneto-rheological fluid clutch is closed after n seconds Connect the pulsator and the inner barrel together and rotate forward for m seconds at the same time. After the end of m seconds, the magneto-rheological fluid clutch is powered off and released. At the same time, the driving device drives the pulsator to rotate in the reverse direction for n seconds. The inner barrel continues to rotate forward due to inertia for n seconds. After the magneto-rheological fluid clutch is closed, the pulsator and the inner tub are connected together and rotated in reverse for m seconds. After the m seconds, the magneto-rheological fluid clutch is opened, and the inner tub continues to rotate in reverse due to inertia. This process is repeated until the end of the washing time. 6. The washing method of a washing machine according to claim 3, characterized in that: in the normal mode, the driving device of the washing machine intermittently drives the pulsator to rotate forwardly for t seconds and reversely for t seconds, and the magnetic The rheological fluid clutch is always de-energized. 7. The washing method of a washing machine according to claim 1, characterized in that: the method for selecting the operating mode of the washing machine is to first judge whether the user selects the washing mode or the dehydration mode, and if it is the washing mode, determine the load of the washing machine. , if the load of the washing machine is less than a quarter of the rated load of the washing machine, select the normal washing mode, otherwise select the dual power washing mode. 8. The washing method of a washing machine according to claim 1, characterized in that: the method for selecting the operating mode of the washing machine is to first judge whether the user selects the washing mode or the dehydration mode, and if it is the washing mode, then judge whether the user chooses the washing mode or the dehydration mode. If the water level of the selected washing machine is low or less than a quarter of the rated water level, then select the normal washing mode, otherwise select the dual power mode. 9. The washing method of a washing machine according to any one of claims 1-8, characterized in that: comprising the steps of: 1) Measure the load of the washing machine by the water level of the washing machine selected by the user or measure the load of the washing machine by the weight of the clothes; 2) Automatically select the operating mode of the washing machine according to the measured load of the washing machine; 3) If it is in the dehydration mode, the magneto-rheological fluid clutch is energized and closed, and the inner barrel and the pulsator rotate at the same time; 4) If it is the washing mode, select the dual-power mode or the normal mode according to the water level or the weight of the clothes. In the dual-power mode, the driving device of the washing machine drives the pulsator forward to rotate for n seconds. After n seconds, the magneto-rheological fluid clutch closes and the pulsator and The inner barrel is connected as one and rotates forward for m seconds. After m seconds, the magneto-rheological fluid clutch is powered off and released. At the same time, the driving device drives the pulsator to rotate in reverse for n seconds. The inner barrel continues to rotate forward due to inertia. The liquid clutch is closed to connect the pulsator and the inner tub as a whole and rotate reversely for m seconds. After the end of m seconds, the magneto-rheological fluid clutch is opened, and the inner tub continues to rotate in reverse due to inertia. Repeat this process until the end of the washing time; 5) In the normal mode, the driving device of the washing machine intermittently drives the pulsator to rotate forwardly for t seconds and reversely for t seconds, and the magneto-rheological fluid clutch is always in a power-off state.