CN110306320B

CN110306320B - Laundry treating apparatus and control method thereof

Info

Publication number: CN110306320B
Application number: CN201810258165.7A
Authority: CN
Inventors: 赵志强; 吕佩师; 许升
Original assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2018-03-27
Filing date: 2018-03-27
Publication date: 2023-04-18
Anticipated expiration: 2038-03-27
Also published as: CN110306320A

Abstract

The invention relates to the technical field of clothes treatment, in particular to clothes treatment equipment and a control method thereof. The invention aims to solve the problem that the existing washing machine impeller can not improve the dissolving effect of a detergent in water. The clothes treatment equipment comprises a shell, a driving device and a washing barrel are arranged in the shell, a wave wheel assembly is arranged in the washing barrel and comprises a wheel disc and a rotating wheel arranged above the wheel disc, a through hole is formed in the center of the wheel disc, the wheel disc is sleeved on a transmission shaft of the driving device through the through hole, the rotating wheel is connected with the transmission shaft through a shaft hole, a plurality of first water outlet holes are formed in the rotating wheel, and spiral ribs or a plurality of spiral blades are arranged on the lower surface of the rotating wheel. Through the arrangement mode, the detergent dissolving device can obviously improve the dissolving effect of the detergent and water, so that the cleanliness is improved.

Description

Laundry treating apparatus and control method thereof

Technical Field

The invention relates to the technical field of clothes treatment, in particular to clothes treatment equipment and a control method thereof.

Background

The washing machine is a clean electrical appliance for washing clothes by using electric energy, and becomes an essential household electrical appliance in daily life with the acceleration of life rhythm and high requirements of people on living comfort. Taking the pulsator washing machine as an example, the pulsator washing machine washes the clothes by means of friction between the motor and the clothes in the forward and reverse rotation process of the pulsator driven by the motor, however, the washing mode has the problems of single water flow, low cleaning degree and the like in the actual washing process, and the use experience of users is greatly influenced.

In order to solve the above problems of the pulsator washing machine, the prior art generally realizes the purpose of changing the water flow direction or increasing the washing force by improving the structure of the pulsator or adding a small pulsator capable of rotating independently on the pulsator. The utility model discloses a utility model patent application for CN2623735Y discloses a "can produce washing machine impeller of additional rivers", this washing machine impeller include the wave dish, stir protruding muscle on the water, stir protruding muscle down, there is the spline shaft hole wave dish center, stir protruding muscle on the water and stir protruding muscle down and distribute in the upper and lower two surfaces of wave dish along the radial direction respectively, mould plastics as an organic wholely with the wave dish, the surface mounting of wave dish has sub-impeller. The impeller of the washing machine achieves the purposes of improving the water flow effect and improving the clothes cleaning degree in a mode of installing the sub-impeller on the surface of the impeller disc to generate additional water flow. Although the above-described technical means solves the problems of a single water flow and low cleaning efficiency to some extent, the following problems are unavoidable. The main expression is that the fundamental purpose of the impeller structure improvement or the small impeller increase is to improve the washing effect in the washing process, and the factors capable of improving the washing effect before the washing process are not considered. For example, none of these solutions is considered from the aspect of solubility of the detergent in water, and obviously, compared to the solution of improving the flow of the washing water to increase the friction between the washing water and the laundry, the degree of cleanliness of the laundry depends on the effect of dissolution of the detergent with water to a greater extent, and thus if the effect of dissolution of the detergent in water is poor, even if the above improvement is made to the pulsator, the degree of cleanliness of the laundry cannot be increased greatly.

Accordingly, there is a need in the art for a new laundry treating apparatus and a control method thereof to solve the above-mentioned problems.

Disclosure of Invention

In order to solve the problems in the prior art, namely to solve the problem that the existing impeller of the washing machine cannot improve the dissolving effect of a detergent in water, the invention provides clothes treatment equipment which comprises a shell, wherein a driving device and a washing barrel are arranged in the shell, an impeller assembly is arranged in the washing barrel, the impeller assembly comprises a wheel disc and a rotating wheel arranged above the wheel disc, a through hole is formed in the center of the wheel disc, the wheel disc is sleeved on a transmission shaft of the driving device through the through hole, the rotating wheel is connected with the transmission shaft, a plurality of first water outlet holes are formed in the rotating wheel, and spiral ribs or a plurality of spiral blades are arranged on the lower surface of the rotating wheel.

In a preferred embodiment of the above laundry treating apparatus, the pulsator assembly further includes a buoyancy unit, and when the buoyancy unit moves upward under the effect of buoyancy, the wheel disc is engaged with the driving shaft, so that the wheel disc is driven by the driving shaft to rotate.

In a preferred technical solution of the above laundry treating apparatus, the buoyancy unit is disposed on the wheel disc, a first meshing pair is disposed between the wheel disc and the transmission shaft and/or the rotating wheel, and when the wheel disc moves upward under the buoyancy, the first meshing pair meshes.

In a preferred technical solution of the above laundry treating apparatus, the buoyancy unit is disposed below the wheel disc, a second meshing pair is disposed between the wheel disc and the transmission shaft and/or the rotating wheel, and when the buoyancy unit moves upward under the buoyancy and pushes the wheel disc to move upward, the second meshing pair meshes.

In a preferred technical solution of the above laundry treating apparatus, the buoyancy unit is disposed below the wheel disc, a third meshing pair is disposed between the buoyancy unit and the transmission shaft and/or the wheel disc, a fourth meshing pair is disposed between the buoyancy unit and the wheel disc, and when the buoyancy unit moves upward under the buoyancy, the third meshing pair and the fourth meshing pair mesh with each other, respectively.

In a preferred technical scheme of the above laundry treating apparatus, the buoyancy unit is disposed below the wheel disc, a connecting member is further disposed between the buoyancy unit and the wheel disc, a fifth meshing pair is disposed between the connecting member and the transmission shaft and/or the wheel, a sixth meshing pair is disposed between the connecting member and the wheel disc, and when the buoyancy unit moves upward under the buoyancy effect and pushes the connecting member to move upward, the fifth meshing pair and the sixth meshing pair mesh with each other respectively.

In a preferred technical scheme of the above clothes treatment equipment, the lower surface of the wheel disc is provided with a shaft hole, and the rotating wheel is connected with the transmission shaft through the shaft hole.

In a preferred embodiment of the above laundry treating apparatus, the rotating wheel has an upward protruding portion, the protruding portion has a cavity, the plurality of first water outlet holes are formed in the protruding portion, and the shaft hole is formed by extending downward from a center of a lower surface of the protruding portion; and/or the plurality of propeller blades or the spiral rib extends from the outer wall of the shaft hole to the lower surface of the boss.

The present invention also provides a control method of the laundry treating apparatus according to any one of the above preferred embodiments, the control method including:

comparing a water level of the washing water in the washing tub with a water level threshold value during the operation of the laundry treating apparatus;

and controlling the running speed of the driving device according to the comparison result.

In a preferred embodiment of the above control method, the step of "controlling the operation speed of the driving device based on the comparison result" further includes:

when the water level of the washing water in the washing barrel is less than or equal to a water level threshold value, controlling the driving device to rotate at a first set rotating speed; or

When the water level of the washing water in the washing barrel is greater than the water level threshold value, controlling the driving device to rotate at a second set rotating speed;

wherein the first set speed is greater than the second set speed.

As can be understood by those skilled in the art, in a preferred technical solution of the present invention, a laundry processing apparatus includes a casing, a driving device and a washing tub are disposed in the casing, a pulsator assembly is disposed in the washing tub, the pulsator assembly includes a wheel disc and a rotating wheel disposed above the wheel disc, a through hole is disposed in the center of the wheel disc, the wheel disc is sleeved on a transmission shaft of the driving device through the through hole, the rotating wheel is connected with the transmission shaft, a plurality of first water outlets are disposed on the rotating wheel, a spiral rib or a plurality of spiral blades are disposed on the lower surface of the rotating wheel, and when the rotating wheel rotates, washing water below the rotating wheel rises and is ejected from the first water outlets; the impeller assembly further comprises a buoyancy unit, and when the buoyancy unit moves upwards under the action of buoyancy, the wheel disc is meshed with the transmission shaft, so that the wheel disc rotates under the driving of the transmission shaft. The control method of the laundry treating apparatus includes: comparing the water level of the washing water in the washing tub with a water level threshold value during the operation of the laundry treatment apparatus; and controlling the running speed of the driving device according to the comparison result. Wherein the step of controlling the operation speed of the driving means according to the comparison result further comprises: when the water level of the washing water in the washing barrel is less than or equal to the water level threshold value, the driving device rotates at a first set rotating speed; or when the water level of the washing water in the washing barrel is greater than the water level threshold value, the driving device rotates at a second set rotating speed; the first set speed is greater than the second set speed.

Through the arrangement of the clothes treatment equipment and the control method thereof, the clothes treatment equipment can obviously improve the dissolving effect of the detergent and the water, and further improve the washing effect and the cleaning degree. Particularly, when the water level is low and the buoyancy is insufficient, the wheel disc is not meshed with the transmission shaft, the transmission shaft only drives the rotating wheel to rotate, and the rotating wheel is small in size, so that the rotating wheel can rotate at a high speed to drive detergent and water in the washing barrel to rotate at a high speed to generate vortex, efficient mixing and dissolving of the detergent and the water are realized, and the utilization rate of the detergent is improved; when the water level is high and the buoyancy is large, the buoyancy unit moves upwards under the action of the buoyancy, the wheel disc is meshed with the transmission shaft, the transmission shaft drives the wheel disc and the rotating wheel to rotate together, and the washing water fully dissolved is used for repeatedly washing clothes, so that the cleanliness in the washing process is improved. That is, compared with the technical scheme of improving the impeller structure or increasing the small impeller in the prior art, the invention obviously improves the dissolving degree of the detergent in water by arranging the buoyancy unit in the clothes treatment equipment and arranging the rotating wheel above the rotary disc, thereby greatly improving the washing degree of the clothes.

In addition, the outer wall of the shaft hole is provided with the spiral rib or the plurality of spiral blades, and when the rotating wheel rotates, the washing water below the rotating wheel rises and is sprayed out of the first water outlet hole, so that the rotary impeller assembly can greatly enhance the rotating and spraying effects of the impeller assembly, reduce the abrasion degree of the impeller to clothes, effectively avoid the winding of the clothes and improve the cleaning degree of the clothes.

Drawings

The laundry treating apparatus and the control method thereof of the present invention will be described below with reference to the accompanying drawings in conjunction with a pulsator washing machine. In the drawings:

FIG. 1 is a schematic structural view of a pulsator washing machine according to the present invention;

FIG. 2 is a schematic structural diagram of a pulsator assembly in a pulsator washing machine according to the present invention;

FIG. 3 is a schematic view illustrating the operation of the pulsator washing machine, showing the position of the pulsator assembly at a low water level;

FIG. 4 is a schematic view illustrating the operation of the pulsator washing machine, showing the position of the pulsator assembly at a high water level;

fig. 5 to 8 are schematic structural views of other embodiments of a pulsator assembly in a pulsator washing machine according to the present invention;

fig. 9 is a flowchart of a control method of the pulsator washing machine according to the present invention.

List of reference numerals

1. A housing; 2. a drive device; 21. a drive shaft; 211. a protrusion; 212. a protrusion; 213. a protrusion; 214. a protrusion; 3. a washing tub; 31. a guide post; 4. a wheel disc; 41. a through hole; 421. a groove; 422. a groove; 423. a groove; 424. a groove; 431. a first limit groove; 432. a second limit groove; 44. a water inlet; 45. water-repellent leaves; 46. rubbing ribs; 47. a second water outlet; 48. water-repellent ribs; 49. a positioning groove; 5. a rotating wheel; 51. a shaft hole; 52. a first water outlet; 53. a water lifting structure; 54. a boss portion; 6. a buoyancy unit; 61. positioning a projection; 63. a rolling bearing; 643. a groove; 653. a protrusion; 7. a connecting member; 714. a groove; 724. and (4) protruding.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the wheel disc shown in the drawings has four water-repelling vanes, the numerical relationship is not constant, and those skilled in the art can adjust the vanes as needed to suit a particular application. For example, three or five water-repellent blades can be arranged on the wheel disc to improve the washing effect in different application scenes.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

First, referring to fig. 1 to 4, the pulsator washing machine of the present invention will be explained. Wherein, fig. 1 is a structural schematic diagram of the pulsator washing machine of the present invention; FIG. 2 is a schematic structural diagram of a pulsator assembly in a pulsator washing machine according to the present invention; FIG. 3 is a schematic view illustrating the operation of the pulsator washing machine, showing the position of the pulsator assembly at a low water level; fig. 4 is a schematic view illustrating an operation process of the pulsator washing machine, which shows a position of the pulsator assembly at a high water level.

As shown in fig. 1 and 2, in order to solve the problem that the conventional pulsator for washing machines cannot improve the dissolving effect of a detergent in water, the pulsator washing machine of the present invention includes a housing 1, a driving device 2 (such as a driving motor) and a washing tub 3 are disposed in the housing 1, a pulsator assembly is disposed in the washing tub 3, and the pulsator assembly mainly includes a wheel disc 4 and a rotating wheel 5 disposed above the wheel disc 4. The upper surface (i.e., the surface shown in fig. 2) of the wheel disc 4 is provided with a plurality of water-repelling blades 45, a plurality of friction ribs 46 and a plurality of second water outlet holes 47 are arranged between every two water-repelling blades 45, and the lower surface of the wheel disc 4 is provided with a plurality of annular reinforcing ribs (not shown in the figure) and a plurality of linear water-repelling ribs 48. The center of the wheel disc 4 is provided with a through hole 41, a plurality of water inlets 44 are arranged around the through hole 41, and the wheel disc 4 is sleeved on the transmission shaft 21 of the driving device 2 in a manner of sliding up and down through the through hole 41. As shown in fig. 3, the wheel disc 4 is further provided with a buoyancy unit 6, a first meshing pair is arranged between the wheel disc 4 and the transmission shaft 21, and when the wheel disc 4 moves upwards under the action of buoyancy, the first meshing pair is meshed, so that the wheel disc 4 can rotate under the drive of the transmission shaft 21. Referring to fig. 2 and 3, the diameter of the rotating wheel 5 is much smaller than that of the wheel disc 4, a convex portion 54 is formed upwards on the rotating wheel 5, a cavity is formed on the convex portion 54, a plurality of first water outlet holes 52 are formed in the convex portion 54, a shaft hole 51 is formed in the center of the lower surface of the convex portion 54, and the rotating wheel 5 is connected with the transmission shaft 21 of the driving device 2 through the shaft hole 51. The outer wall of the shaft hole 51 is further provided with a water lifting structure 53, and the water lifting structure 53 is configured such that when the runner 5 rotates, the washing water below the runner 5 rises along the axial direction of the shaft hole 51 and is jetted from the first water outlet hole 52.

The rotary wheel 4 is arranged on the transmission shaft 21 in a vertically sliding manner, and the water lifting structure 53 can enable the washing water below the rotary wheel 5 to rise along the axial direction of the shaft hole 51 and be sprayed out from the first water outlet hole 52, so that the impeller assembly can obviously improve the dissolving effect of the washing agent and the water in a manner that the transmission shaft 21 drives the rotary wheel 5 to rotate at a high speed and spray water when the rotary wheel 4 is not meshed with the transmission shaft 21, and the washing effect in the washing process is improved after the rotary wheel 4 is combined with the transmission shaft 21. In other words, the invention solves the problem that the prior washing machine impeller can not improve the dissolving effect of the detergent in water, and effectively improves the dissolving effect of the detergent and the water, thereby improving the washing effect and being suitable for large-scale popularization.

With further reference to fig. 2, the wheel disc 4 is bowl-shaped, a through hole 41 is formed in the center of the bowl-shaped, a concave circular platform is formed around the through hole 41, two circles of water inlets 44 are formed in the circular platform around the through hole 41, each water inlet 44 of the outer ring is an oval water inlet, and each water inlet 44 of the inner ring is an arc-shaped water inlet. The upper surface of rim plate 4 is provided with four water impeller 45, and every water impeller 45 extends to the upper surface outer fringe of rim plate 4 from the outer fringe of circular platform along the radial of rim plate 4. Five friction ribs 46 are arranged between every two water-stirring blades 45, each friction rib 46 is arranged along the radial direction of the wheel disc 4, and a plurality of second water outlet holes 47 are arranged between every two friction ribs 46 and between the adjacent friction ribs 46 and the water-stirring blades 45.

Referring to fig. 3 and 4, in one possible embodiment, the lower surface of the disc 4 is provided with an annular mounting groove (not shown in the drawings, i.e. the location in fig. 3 where the buoyancy units 6 are mounted) which is provided coaxially with the disc 4 and in which the buoyancy units 6 are embedded. The first meshing pair comprises a plurality of grooves 421 formed on the upper surface of the wheel disc 4 around the through hole 41 and a plurality of protrusions 211 correspondingly formed on the outer wall of the transmission shaft 21, and the butt joint of the wheel disc 4 and the transmission shaft 21 and the power transmission between the driving device 2 and the wheel disc 4 are realized in a mode that the protrusions 211 are embedded into the grooves 421.

It should be noted that, in the present invention, the specific form of the buoyancy unit 6 is not unique, and the application may be slightly different from the arrangement manner on different products, as long as it is sufficient that the wheel disc 4 can float or sink under the action of buoyancy after being arranged on the wheel disc 4. For example, the buoyancy unit 6 may be made of inorganic material and/or organic polymer material with low density (e.g., expanded polyethylene, polystyrene, etc.), and its density may be 0.001 E.E.E.1g/cm ³ Preferably 0.1 to 0.7g/cm ³ . For example, the buoyancy unit 6 may be a solid compound obtained by filling an organic polymer material with an inorganic lightweight filler and performing a physicochemical reaction. For another example, the buoyancy unit 6 may also be a buoyancy chamber with a hollow structure, such as hollow glass, plastic, aerogel, etc.

Referring to fig. 2 and 3, in one possible embodiment, the raised portion 54 of the wheel 5 is formed convexly from bottom to top (in the orientation shown in fig. 3), and the cross-sectional area of the raised portion 54 gradually decreases from bottom to top. The protruding portion 54 is provided with a plurality of first water outlet holes 52, a shaft hole 51 (such as a spline hole or a threaded hole) is formed downwards in the center of the lower surface of the protruding portion 54, and the rotating wheel 5 is connected with the transmission shaft 21 through the shaft hole 51. The water lifting structure 53 is a spiral rib wound on the outer wall of the shaft hole 51 along the axial direction of the shaft hole 51, the outer edge of the spiral rib extends to the lower surface of the boss 54 and is connected with the lower surface of the boss 54, and then the chambers of the spiral rib, the shaft hole 51 and the boss 54 jointly form the Archimedes spiral pipe. Preferably, the boss 54, the shaft hole 51 and the spiral rib are integrally formed (e.g., the wheel disc 4 is integrally formed). Of course, the boss 54, the axial hole 51 and the spiral rib may be formed separately or partially integrally.

The operation of a pulsator washing machine to which the pulsator assembly of the present invention is applied will be described with reference to fig. 3 and 4 in conjunction with fig. 1.

As shown in fig. 3, when the washing tub 3 is just filled with water and the water level is low, the wheel disc 4 is kept at the bottom of the washing tub 3 under the action of gravity or suspended in the washing water without being meshed with the transmission shaft 21 and the wheel disc 4 due to insufficient buoyancy, the groove 421 on the wheel disc 4 is separated from the protrusion 211 on the transmission shaft 21, the transmission shaft 21 of the driving device 2 only drives the runner 5 to rotate, and the runner 5 rotates at a high speed to drive the detergent in the washing tub 3 to rotate at a high speed to be quickly mixed with the water due to the small volume of the runner 5. Meanwhile, in the process of rotating the rotating wheel 5, the washing water enters the convex part 54 of the rotating wheel 5, the spiral rib inside the cavity rotates for a circle when the rotating wheel 5 rotates for a circle, the washing water below the rotating wheel 5 is sucked into the Archimedes spiral pipe under the driving of the spiral rib, the washing water in the spiral pipe is upwards pushed into one or more screw pitches by the spiral rib, along with the high-speed rotation of the spiral rib, the washing water in the cavity is rapidly pressurized and upwards flows along the axial direction of the shaft hole 51, finally the washing water passes through the first water outlet hole 52 to form strong high-pressure jet water flow to be upwards jetted, the jet height can easily reach the cover of the washing barrel 3, and the washing water is uniformly scattered on clothes after falling.

As shown in fig. 4, as the water level rises and the buoyancy increases as the washing tub 3 is filled with water continuously, the wheel disc 4 moves upward and is connected to the transmission shaft 21 by the engagement of the groove 421 and the protrusion 211 under the action of the buoyancy unit 6, and the transmission shaft 21 can rotate at a reduced speed and drive the wheel disc 4 and the runner 5 to rotate together because the wheel disc 4 has a larger diameter. In the rotating process, the water stirring blades 45 drive washing water above the wheel disc 4 to generate vortex, the friction ribs 46 carry out friction washing on clothes, the water stirring ribs 48 drive a part of washing water below the wheel disc 4 to be thrown outwards under the action of the water stirring ribs 48, and the other part of washing water is sprayed out to the upper side of the wheel disc 4 through the second water outlet holes 47, so that the friction degree between the clothes and the water stirring blades 45 and the friction ribs 46 is reduced. Meanwhile, the washing water passes through the wheel disc 4 through the plurality of water inlets 44 and enters the protruding portion 54 of the rotating wheel 5, the rotating wheel 5 rotates freely under the combined action of the impeller and the rotating water flow, each time the rotating wheel rotates for a circle, the spiral ribs in the chamber also rotate for a circle, the washing water below the rotating wheel 5 is sucked into the Archimedes spiral pipe under the driving of the spiral ribs, the washing water in the spiral pipe is pushed upwards by the spiral ribs to form one or more screw pitches, the washing water in the chamber is rapidly pressurized and flows upwards along the axial direction of the shaft hole 51 along with the high-speed rotation of the spiral ribs, finally the washing water passes through the first water outlet hole 52 to form strong high-pressure jet water flow to be jetted upwards, and the strong water flow holds up and keeps the clothes suspended and simultaneously brushes the clothes.

It should be noted that the low water level mentioned above refers to a water level at which the recess 421 of the wheel 4 is not engaged with the projection 211 of the drive shaft 21, and may be a water level corresponding to a case where the wheel 4 is not floated at all or a water level at which the wheel is floated to a state just not engaged. Accordingly, a high water level refers to any water level that would cause recess 421 of wheel 4 to engage with projection 211 on drive shaft 21. It can be understood by those skilled in the art that the values of the low water level and the high water level and the specific values of the rotation speed of the driving device 2 corresponding to the low/high water levels are different according to the shape and the configuration of the washing apparatus and the material of the buoyancy unit 6, and the specific values thereof can be completely obtained based on laboratory experimental data and will not be described herein again.

From the above description, the invention has the advantages that by the innovative arrangement mode that the rotating wheel 5 is arranged above the wheel disc 4, the buoyancy unit 6 is arranged on the lower surface of the wheel disc 4, and the wheel disc 4 is sleeved on the transmission shaft 21 in a manner of sliding up and down, the rotating wheel 5 can be driven by the driving device 2 to rotate at high speed when the water level is low, so that the efficient mixing and dissolving of the detergent and water are realized, and the utilization rate of the detergent is improved; when the water level is high, the driving device 2 can drive the wheel disc 4 and the rotating wheel 5 to rotate at the same time, so that the wheel disc 4 and the rotating wheel 5 drive the fully dissolved washing water to repeatedly wash clothes, and the cleanliness in the washing process is greatly improved. The chamber formed by the spiral ribs, the shaft hole 51 and the bulge 54 forms an Archimedes spiral tube arrangement mode, when the rotating wheel 5 runs, strong water jet can be formed to lift up clothes and spray the clothes, the ingenious arrangement mode not only enhances the water jet effect, realizes the uniform distribution of detergent on the clothes, further improves the cleaning degree of the clothes, but also can avoid the winding among the clothes, reduces the abrasion degree of the impeller to the clothes, and effectively cares the clothes. The cross sectional area of the convex part 54 is gradually reduced along the forming direction of the convex part 54 (namely, the upper part is small and the lower part is large), so that the cavity is gradually narrowed and the pressure is gradually increased in the process that the washing water is upwards pushed by the spiral rib, the pressure and the spraying effect of the water jet are ensured, and the competitiveness of the product is improved. The mounting groove is annular and the mode that sets up with rim plate 4 is coaxial, has then guaranteed the balance of buoyancy unit 6 on rim plate 4, has improved the stability of rim plate 4 when moving.

Of course, the above-described embodiments are merely illustrative of the principles of the present invention and are not intended to limit the scope of the invention, which is not to be limited thereby, and those skilled in the art can make modifications to the structure of the present invention without departing from the principles of the present invention in any way so that the invention is capable of being applied to more specific applications. For example, the center of the wheel disc 4 may not be provided with a concave circular land; for another example, the structure of the water lifting structure 53 may be in other forms as long as the structure can generate a structure similar to an archimedes spiral tube or a working chamber, for example, a propeller blade is arranged on the outer wall of the shaft hole 51, and the propeller blade is respectively connected with the shaft hole 51 and the boss 54 to form a spraying channel; as another example, the wheel disc 4 may also be shaped like a disc or other form; for another example, the first engagement pair may also be an internal spline or an external spline or other combination of a key groove and a key. For another example, the number of the grooves 421 and the protrusions 211 may be different, as long as the number of the grooves 421 is not less than the number of the protrusions 211, for example, four or five protrusions 211 are disposed on the transmission shaft 21, and ten or even twenty grooves 421 matched with the protrusions 211 are disposed on the wheel disc 4, so as to ensure the smoothness of the engagement. For another example, the protrusion 211 and the groove 421 may be respectively provided with a guiding inclined surface or a guiding curved surface, thereby further increasing the smoothness of the engaging process. For another example, parameters (such as set length, thread pitch, etc.) of the spiral rib can be correspondingly adjusted according to a specific application scene, so that a good water flow lifting effect can be obtained; for another example, the number and the arrangement form of the water inlet 44, the water-repelling leaf 45, the friction rib 46, the first water outlet 52, the second water outlet 47, the water-repelling rib 48 and the reinforcing rib are not limited, as long as the number and the arrangement form can be favorable for improving the washing effect and the spraying effect. For another example, the rotating wheel 5 may also be sleeved on the transmission shaft 21 of the driving device 2 in an internal and external spline or protrusion/groove engagement manner, and even the shaft hole 51 may be set as the through hole 41 and the rotating wheel 5 may slide up and down relative to the transmission shaft 21, so long as it is ensured that the rotating wheel 5 is always engaged with the transmission shaft 21 and does not slide out of the transmission shaft 21, for example, by providing a corresponding upper and lower limiting structure on the transmission shaft 21. For another example, the rotary wheel 5 may be a small impeller (refer to a common impeller), which can also improve the dissolving effect of the detergent and water.

For another example, instead of being disposed on the transmission shaft 21, the protrusion 211 may be disposed on the runner 5, for example, on the bottom of the runner 5 or outside the shaft hole 51, and at this time, the upper surface of the wheel disc 4 is correspondingly provided with a groove, so that power transmission between the transmission shaft 21 and the wheel disc 4 can also be achieved. Of course, it will be understood by those skilled in the art that the projection 211 may also be provided in part on both the drive shaft 21 and the wheel 5 to increase the stability of the engagement of the drive shaft 21 with the wheel disc 4.

For another example, in order to improve the stability of engagement and the service life of each component, a reinforced embedding structure may be further provided on each engagement pair to increase the contact area after engagement. For example, the groove 421 in the first engaging pair further includes a groove body (i.e., an engaging body) and a small groove/small protrusion (i.e., a reinforcing inlay) disposed inside the groove, and the protrusion 211 in the first engaging pair further includes a protrusion body (i.e., an engaging body) and a small protrusion/small groove (i.e., a reinforcing inlay) disposed on the protrusion, so that when engaging, the protrusion 211 is inserted into the groove 421, and the small protrusion/small groove is further inserted into the corresponding small groove/small protrusion, thereby increasing the contact area and improving the stability of the engagement.

It should be noted that, although not described, the pulsator assembly of the present invention may be used in combination with a pulsator or a pulsator with a small pulsator, which is structurally modified in the related art, to simultaneously achieve sufficient dissolution of detergent and water and a great improvement in washing effect.

In addition, besides the above-mentioned scenario of applying the pulsator assembly to two different water level stages of a washing process, the present invention can also be applied to other scenarios, such as applying the pulsator assembly to different washing manners: when the clothes are washed less or the clothes are washed more valuable, the clothes can be gently washed by only using the rotating wheel 5 in a low water level operation mode, so that the abrasion of the rotating wheel 4 to the clothes is reduced; when a large amount of clothes are washed, the impeller assembly can be used for fully dissolving the detergent in the water for washing according to the operation process in a high water level operation mode, so that the cleanliness of the clothes is improved.

Referring to fig. 5 to 8, other embodiments of the pulsator assembly in a pulsator washing machine according to the present invention will be described.

As shown in fig. 5 and 6, under the condition that other structures are not changed, the buoyancy unit 6 of the pulsator assembly is disposed below the wheel disc 4, a second meshing pair is disposed between the wheel disc 4 and the transmission shaft 21 (if the second meshing pair is the groove 422 and the protrusion 212 shown in fig. 5 and 6, it may be an internal spline and an external spline, the same applies below), and when the buoyancy unit 6 moves upward under the buoyancy and pushes the wheel disc 4 to move upward, the second meshing pair meshes. Referring to fig. 5, in a possible embodiment, a positioning pair, such as a positioning protrusion 61 and a positioning groove 49, may be further disposed between the buoyancy unit 6 and the wheel disc 4, so that the buoyancy unit 6 rotates together with the wheel disc 4, friction or abrasion generated by the wheel disc 4 and the buoyancy unit 6 during rotation is effectively avoided, the rotation effect of the wheel disc 4 is not affected, and the service life of the buoyancy unit 6 and the rotation stability of the wheel disc 4 are improved. Referring to fig. 6, in another possible embodiment, a guiding structure, such as a guiding post 31, may be further disposed on the inner bottom of the washing tub 3, and a guiding hole (not shown in the figure, i.e., a position where the guiding post 31 protrudes) is correspondingly formed on the buoyancy unit 6, so that the buoyancy unit 6 is more accurately and smoothly contacted with the wheel disc 4 during the floating process, and the meshing stability and smoothness between the wheel disc 4 and the transmission shaft 21 are improved. In addition, buoyancy unit 6 upper surface can also set up antifriction bearing 63, and then cup joints with buoyancy unit 6 through the bearing inner race, and outer lane and the rotatory mode of rim plate 4 contact effectively avoid the rim plate 4 to rotate the time with the friction or the wearing and tearing that buoyancy unit 6 produced, guarantee that the rotation effect of rim plate 4 is not influenced, improve buoyancy unit 6's life and the rotational stability of rim plate 4.

Similarly, as shown in fig. 7, under the condition that other structures are not changed, the buoyancy unit 6 of the pulsator assembly is disposed below the wheel disc 4, a third engagement pair (a groove 643 and a protrusion 213 are shown in fig. 7) is disposed between the buoyancy unit 6 and the transmission shaft 21, a fourth engagement pair (a groove 423 and a protrusion 653 are shown in fig. 7) is disposed between the buoyancy unit 6 and the wheel disc 4, and the third engagement pair and the fourth engagement pair are engaged when the buoyancy unit 6 moves upward under the buoyancy. In addition, the first limiting groove 431 can be further formed below the wheel disc 4 and used for playing limiting and guiding roles in the upward moving process of the buoyancy unit 6, so that the butt joint of the buoyancy unit 6 and the transmission shaft 21 and the wheel disc 4 is smoother, the balance of the buoyancy unit 6 after meshing is guaranteed, and the stability of the wheel disc 4 during operation is improved.

Similarly, as shown in fig. 8, under the condition that other structures are not changed, the buoyancy unit 6 of the pulsator assembly is disposed below the wheel disc 4, the connecting member 7 is further disposed between the buoyancy unit 6 and the wheel disc 4, a fifth meshing pair (a groove 714 and a protrusion 214 are illustrated in fig. 8) is disposed between the connecting member 7 and the transmission shaft 21, a sixth meshing pair (a groove 424 and a protrusion 724 are illustrated in fig. 8) is disposed between the connecting member 7 and the wheel disc 4, and when the buoyancy unit 6 moves upward under the buoyancy and pushes the connecting member 7 to move upward, the fifth meshing pair and the sixth meshing pair mesh respectively. In addition, the wheel disc 4 below can also be provided with second spacing groove 432 for move up the in-process at connecting piece 7 and play spacing and guide effect, make the butt joint of connecting piece 7 and transmission shaft 21 and wheel disc 4 more smooth and easy, guarantee the balance after the connecting piece 7 meshing, stability when improving the operation of wheel disc 4.

The control method of the pulsator washing machine according to the present invention will be described with reference to fig. 9. Wherein, the first and the second end of the pipe are connected with each other, fig. 9 is a flowchart of a control method of the pulsator washing machine according to the present invention.

As shown in fig. 9, the control method of the pulsator washing machine of the present invention mainly includes the steps of:

s100, in the running process of the pulsator washing machine, comparing the water level of washing water in a washing barrel with a water level threshold value, for example, obtaining the water level of the washing water in the washing barrel through a water level sensor, and comparing the water level value with a preset water level threshold value, wherein the water level threshold value corresponds to the buoyancy of the washing water in the pulsator washing machine at present, and further can reflect the state of a buoyancy unit in a pulsator assembly of the pulsator washing machine, namely the meshing state of a wheel disc and a transmission shaft;

s200, controlling the running speed of the driving device according to the comparison result, and if the water level of the washing water is lower than the water level threshold value, proving that the buoyancy is smaller at the moment, the buoyancy unit is not enough to enable the wheel disc to be meshed with the transmission shaft, and the driving device (such as a driving motor) only drives the rotating wheel to rotate, so that the running speed of the driving device (such as the rotating speed of the driving motor) can be properly increased, the rotating wheel is driven to rotate at a high rotating speed, and the dissolving effect of the detergent and the water is improved.

In a possible implementation, step S200 may still further include:

i) When the water level of the washing water in the washing barrel is less than or equal to the water level threshold, controlling the driving device to rotate at a first set rotating speed, wherein as described above, when the water level of the washing water is less than or equal to the water level threshold, it is proved that the buoyancy is smaller at this moment, the buoyancy unit is not enough to enable the wheel disc to be meshed with the transmission shaft, and the driving device (such as a driving motor) only drives the rotating wheel to rotate, so that the running speed (such as the rotating speed of the driving motor) of the driving device can be properly increased, the rotating wheel is driven to rotate at the first set speed (such as 500 r/min), the dissolving effect of the detergent and the water is improved, and the utilization rate of the detergent is increased; and when the rotating wheel runs, strong water jet flow is formed to lift the clothes and spray the clothes, so that the water jet effect is enhanced, the uniform dispersion of detergent on the clothes is realized, the washing degree of the clothes is improved, the winding of the clothes is avoided, the abrasion degree of the impeller to the clothes is reduced, and the clothes are effectively protected.

ii) when the water level of the washing water in the washing barrel is higher than the water level threshold, controlling the driving device to rotate at a second set rotating speed, and when the water level of the washing water is higher than the water level threshold, proving that the buoyancy is larger at the moment, the buoyancy unit is enough to enable the wheel disc to be meshed with the transmission shaft, and the driving device (such as a driving motor) drives the rotating wheel and the wheel disc to rotate simultaneously, so that the running speed of the driving device (such as the rotating speed of the driving motor) can be properly reduced, and the rotating wheel and the wheel disc are driven to rotate at the second set speed (such as 100 r/min), so that the wheel disc and the rotating wheel drive the washing water which is fully dissolved to repeatedly wash the clothes, and the cleaning degree in the washing process is greatly improved.

Finally, it should be noted that, although the above preferred embodiment is described by taking a pulsator washing machine as an example, this is not intended to limit the protection scope of the present invention, and it will be appreciated by those skilled in the art that the present invention can also be applied to other clothes processing apparatuses with a pulsator assembly besides a pulsator washing machine, such as a shoe washing machine with a pulsator assembly or a drum pulsator two-in-one washing machine, etc.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims

1. A clothes treatment device comprises a shell, a driving device and a washing barrel are arranged in the shell, a wave wheel component is arranged in the washing barrel,

the impeller assembly is characterized by comprising a wheel disc and a rotating wheel arranged above the wheel disc, wherein a through hole is formed in the center of the wheel disc, the wheel disc is sleeved on a transmission shaft of a driving device through the through hole, the rotating wheel is connected with the transmission shaft, a plurality of first water outlet holes are formed in the rotating wheel, and a spiral rib or a plurality of spiral blades are arranged on the lower surface of the rotating wheel;

the impeller assembly further comprises a buoyancy unit, when the buoyancy unit moves upwards under the action of buoyancy, the wheel disc is meshed with the transmission shaft, so that the wheel disc is driven by the transmission shaft to rotate;

the buoyancy unit is arranged below the wheel disc, a third meshing pair is arranged between the buoyancy unit and the transmission shaft and/or the rotating wheel, a fourth meshing pair is arranged between the buoyancy unit and the wheel disc, and when the buoyancy unit moves upwards under the action of buoyancy, the third meshing pair and the fourth meshing pair are respectively meshed; or

The buoyancy unit set up in the rim plate below, the buoyancy unit with still be provided with the connecting piece between the rim plate, the connecting piece with be provided with the fifth meshing pair between transmission shaft and/or the runner, the connecting piece with be provided with the sixth meshing pair between the rim plate, work as the buoyancy unit rebound under the buoyancy and promote the connecting piece rebound, the fifth meshing pair with the sixth meshing pair meshes respectively.

2. The laundry treating apparatus according to claim 1, wherein the buoyancy unit is provided to the wheel, and a first engagement pair is provided between the wheel and the driving shaft and/or the spinning wheel, and is engaged when the wheel moves upward by the buoyancy.

3. The laundry treating apparatus according to claim 1, wherein the buoyancy unit is disposed below the wheel, and a second engagement pair is disposed between the wheel and the driving shaft and/or the spinning wheel, and is engaged when the buoyancy unit moves upward by buoyancy and pushes the wheel to move upward.

4. The laundry treating apparatus according to any one of claims 1 to 3, wherein a lower surface of the drum is provided with a shaft hole through which the rotation wheel is connected with the driving shaft.

5. The laundry processing apparatus according to claim 4, wherein the rotary wheel is formed with a protrusion portion upward, the protrusion portion is formed with a cavity, the plurality of first water outlet holes are opened on the protrusion portion, and the shaft hole is formed by extending downward from a center of a lower surface of the protrusion portion; and/or the plurality of propeller blades or the spiral rib extends from the outer wall of the shaft hole to the lower surface of the boss.

6. A control method of controlling the laundry treating apparatus according to any one of claims 1 to 5, characterized in that the control method comprises:

7. The control method according to claim 6, wherein the step of controlling the operation speed of the driving device based on the comparison result further comprises:

wherein the first set speed is greater than the second set speed.