A washing machine and a washing method

Abstract

The present invention provides a washing machine and a washing method. The washing machine includes a washing tub. A basin-shaped base is provided below the washing tub. A rotatable impeller is provided in the accommodating cavity between the bottom surface of the washing tub and the basin-shaped base. A water flow jet opening communicating the accommodating cavity and the washing cavity surrounded by the washing tub is formed on the bottom surface of the washing tub. By forming a water flow jet opening on the bottom surface of the washing tub and providing a rotatable impeller in the accommodating cavity between the bottom surface of the washing tub and the basin-shaped base, the rotation of the impeller can jet the water flow in the accommodating cavity into the washing cavity, and then onto the clothes floating in the washing cavity, so that the clothes float up and down in the washing cavity, which is beneficial to impacting the dirt on the clothes, improving the cleaning degree of rinsing, and increasing the cleanliness ratio of the clothes. And the agitator is omitted, and the clothes are mainly washed by the upward-impacting water flow, avoiding the abrasion and pulling deformation of the clothes, which is beneficial to protecting the clothes.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing machines, and particularly relates to a washing machine and a washing method thereof. Background Art

[0002] A pulsator washing machine washes clothes by using the frictional force generated between the flowing water and the clothes. Generally, the movement of water is generated by a disc-shaped pulsator rotating in forward and reverse directions. The pulsator washing machine has excellent washing ability and requires a relatively short washing time. In addition, the pulsator washing machine also has the advantages of low noise, small vibration, and relatively low price.

[0003] The existing pulsator washing machine includes a cabinet, an inner tub and an outer tub are sleeved and arranged in the cabinet. A circular pulsator disc is provided at the bottom of the inner tub. The upper surface of the pulsator disc is provided with a middle boss protruding upward and several washing ribs protruding upward. The washing ribs are evenly distributed circumferentially around the middle boss. Relying on the forward and reverse rotation of the pulsator, a simple swirling water flow is formed, which cannot achieve a sufficient washing effect. And this simple swirling water flow easily causes the clothes to knot, reducing the washing efficiency and not being able to be rinsed clean during the rinsing process. And the direct strong friction between the pulsator and the clothes causes the clothes to be worn and deformed. Summary of the Invention

[0004] In view of the above problems existing in the prior art, the present invention provides a washing machine that omits the pulsator and impacts the clothes by the water flow sprayed upward, which is beneficial to improving the washing efficiency and the cleaning ratio.

[0005] To achieve the above technical purpose, the present invention is realized by the following technical solutions:

[0006] A washing machine includes a washing tub, a basin-shaped base is provided below the washing tub, a rotatable impeller is provided in the accommodating cavity between the bottom surface of the washing tub and the basin-shaped base, and a water flow injection port communicating the accommodating cavity and the washing cavity surrounded by the washing tub is opened on the bottom surface of the washing tub.

[0007] Further, the washing machine further includes a driving device for driving the impeller to rotate so that the water in the accommodating cavity enters the washing cavity through the water flow injection port.

[0008] Further, the water flow injection port is a plurality of slit-shaped annular ports arranged concentrically and at intervals.

[0009] Further, the water flow injection port is a vertical port in the up and down direction.

[0010] Further, the water flow sprayed out through the water flow injection port is sprayed vertically upward.

[0011] Further, an annular drainage plate is provided at the lower end of the bottom surface of the washing tub, and a drainage channel connected to the water jet orifice is formed between the adjacent drainage plates and the bottom surface.

[0012] Further, the drainage channel communicates with the accommodation cavity.

[0013] Further, the drainage channel includes a drainage cavity extending downward and outward along the water jet orifice, and an inflow port communicating with the accommodation cavity is provided downward along the outer side of the drainage cavity.

[0014] Further, the inflow port is an annular port formed between the lower parts of adjacent drainage plates.

[0015] Further, the drainage plate has an outer bending portion extending downward and outward along the inner circle of the water jet orifice, an outer extension portion extending downward and bending along the outer side of the outer bending portion, and also has an inner extension portion extending outward and downward along the bottom surface.

[0016] Further, the lower ends of adjacent drainage plates form the inflow port.

[0017] Further, the size of the drainage cavity is larger than the size of the annular port.

[0018] Further, the basin-shaped base is fixedly and sealingly provided with the washing tub, and a water return port communicating with the accommodation cavity is provided on the bottom surface of the washing tub.

[0019] Further, the water return port is provided outside the water jet orifice.

[0020] Further, an annular partition plate extending downward is provided at the lower end of the bottom surface of the washing tub, and the partition plate is arranged at a position between the water return port and the water jet orifice.

[0021] Further, the basin-shaped base extends upward to form an outer tub sleeved outside the washing tub.

[0022] Further, the impeller includes a shaft seat and a plurality of blades extending circumferentially and outwardly at intervals along the shaft seat.

[0023] Further, the blades are arranged vertically.

[0024] Further, the blades are arranged obliquely.

[0025] Based on the above washing machine, the present invention further provides a washing method for the above washing machine. By impacting the clothes with upwardly sprayed water, it is beneficial to improve the washing efficiency and the cleaning ratio.

[0026] A washing method for the above washing machine includes the following steps:

[0027] A. Water injection step: Add water to the washing tub.

[0028] B. Washing step: Drive the impeller to rotate. The impeller agitates the water in the accommodating cavity to enter the washing cavity through the water flow jet orifice, and the water flow impacts the clothes floating in the washing cavity.

[0029] The washing machine provided by the present invention has a water flow jet orifice opened on the bottom surface of the washing tub, and a rotatable impeller is provided in the accommodating cavity between the bottom surface of the washing tub and the basin-shaped base. By rotating the impeller, the water flow in the accommodating cavity can be sprayed into the washing cavity, and then onto the clothes floating in the washing cavity, so that the clothes float up and down in the washing cavity, which is beneficial to impacting the dirt on the clothes, improving the cleaning degree of rinsing, and increasing the cleanliness ratio of the clothes. And the agitator is omitted, and the clothes are mainly washed by the upward impact water flow, avoiding the wear and pulling deformation of the clothes, which is beneficial to protecting the clothes.

[0030] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become clearer. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 FIG. is a schematic structural diagram of the first embodiment of the washing machine proposed by the present invention;

[0032] Figure 2 is Figure 1 a schematic diagram of a partial structure in;

[0033] Figure 3 is Figure 2 an enlarged schematic structural diagram of the drainage plate in;

[0034] Figure 4 FIG. is a schematic structural diagram of the second embodiment of the washing machine proposed by the present invention;

[0035] Figure 5 is Figure 4 a schematic diagram of a partial structure in;

[0036] Figure 6 FIG. is a schematic structural diagram of the third embodiment of the washing machine proposed by the present invention;

[0037] Figure 7 is Figure 6 a schematic diagram of a partial structure in. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0039] In the description of the present invention, it should be noted that the following terms are first defined: the direction close to the axis of the washing tub is "inward", and the direction away from the axis of the washing tub is "outward". In addition, the orientations or positional relationships indicated by "upper", "lower", etc. are based on the positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] Referring to Figures 1 - 3 , which is the first embodiment of the washing machine proposed by the present invention. A washing machine includes a washing tub 1. When washing clothes, the clothes are put into the washing tub. A basin-shaped base 2 is provided below the washing tub 1. A rotatable impeller 4 is provided in the accommodation cavity 3 between the bottom surface 11 of the washing tub 1 and the basin-shaped base 2. A water flow injection port 12 is opened on the bottom surface 11 of the washing tub 1, and the water flow injection port 12 communicates with the accommodation cavity 3 and the washing tub 1. By opening the water flow injection port 12 on the bottom surface 11 of the washing tub 1 and providing a rotatable impeller 4 in the accommodation cavity 3 between the bottom surface of the washing tub 1 and the basin-shaped base 2; the rotation of the impeller 4 can spray the water flow in the accommodation cavity 3 into the washing cavity, and then spray it onto the clothes floating in the washing cavity, so that the clothes float up and down in the washing cavity, which is beneficial to impacting the dirt on the clothes, improving the cleanliness of rinsing, and increasing the cleaning ratio of the clothes; and the agitator is omitted, and the clothes are mainly washed by the upward-impacting water flow, avoiding the wear, pulling and deformation of the clothes, which is beneficial to protecting the clothes.

[0041] In this embodiment, the washing machine further includes a driving device for driving the impeller 4 to rotate. Preferably, the driving device is a motor; the driving device drives the impeller 4 to rotate, so that the water in the accommodation cavity 3 is sprayed into the washing cavity through the water flow injection port 12, and the sprayed water flow is used to wash the clothes.

[0042] In this embodiment, the water jet orifices 12 are a plurality of slit-shaped annular orifices arranged concentrically at intervals. In this way, multiple annular jet water flows are formed to impact on the clothes, ensuring the intensity of the water flow and being beneficial to the cleaning of the clothes. Preferably, an annular drainage plate 13 is provided at the lower end of the bottom surface 1 of the washing tub. A drainage channel 14 connected to the annular orifice 12 is formed between the adjacent drainage plates 13 and the bottom surface 12. The drainage channel 14 in this embodiment is similar to an S shape, which is beneficial to forming a tendency for the water flow ejected from the water jet orifice 12 to move slightly inward while jetting upward. During the upward movement of the jet water flow, the jet force decreases, and the multi-loop water flows converge inward, which is beneficial to the accumulation of the jet force, so that the water flow reaching the upper part of the washing water in the washing cavity also has a greater impact force; and the upward jet water flow has a tendency to move inward, making the water flow in the washing cavity have a tendency to turn outward when jetting to the upper end, forming a downward flowing return water flow on the outer side of the washing cavity; at the same time, the tumbling water flow drives the clothes to tumble, so that the clothes at the bottom layer are constantly changed, ensuring that the jet water flow can impact all the clothes and being beneficial to ensuring the cleaning ratio of the clothes.

[0043] In this embodiment, as shown in Figure 3 shown, the drainage channel 14 is communicated with the accommodation cavity 3. The drainage channel 14 includes a drainage cavity 141 extending downward and outward along the annular orifice 12, an inflow port 142 provided downward along the outer side of the drainage cavity 141 and communicated with the accommodation cavity 3, and a vertical inflow channel 143 is provided between the drainage cavity 141 and the inflow port 142; in this way, the water flow in the accommodation cavity 3 is rotated by the impeller 4, enters the upward inflow channel 143 through the inflow port 142, then reaches the drainage cavity 141, and is jetted into the washing cavity of the washing tub 1 from the water jet orifice 12 located inside the drainage cavity 141. Preferably, the area of the inflow port 142 is larger than the area of the water jet orifice 12, which is beneficial to increasing the jet pressure of the water flow, improving the jet intensity, and being beneficial to improving the cleaning ratio of the washing. The water flow reaches the drainage cavity 141 from the inflow channel 143. The water flow flows upward from bottom to top in the inflow channel 143. After reaching the drainage cavity 141, due to the blockage of the inner wall of the drainage cavity 141, the water flow flows upward and inward, and then has an upward and inward flowing tendency after reaching the water jet orifice 12. The drainage cavity 141 has a rectifying effect, making the jetted water flow form a set effect of inward bending and accumulation. The size of the drainage cavity 141 is much larger than the size of the inflow port 142 and also much larger than the size of the water jet orifice 12; the drainage cavity 141 has a voltage stabilizing effect, avoiding the dispersion of the water flow after jetting, and making the direction of the jetted water flow have good consistency.

[0044] In this embodiment, the inflow port 142 is an annular structure formed between the lower parts of adjacent drainage plates 13. The drainage plate 13 has an outer bent portion 131 that extends downward along the inner circle of the annular opening 12 and bends outward, an outer extension portion 132 that extends downward and bends along the outside of the outer bent portion 131, and also has an inner extension portion 133 that extends outward along the bottom surface 12 and bends downward; the drainage plate 13 also has a horizontal bottom connecting the outer extension portion 132 and the inner extension portion 133. In this way, a drainage cavity 141 is formed between the outer bent portion 131 of the inner drainage plate 13, the bottom surface 11 of the washing tub 1, and the inner extension portion 133 of the outer drainage plate 13, and the inflow channel 143 is formed by the inner extension portion 132 and the outer inner extension portion 133. By providing the drainage plate 13 to form the drainage channel 14, it is beneficial to ensure the cleaning ratio of the clothes.

[0045] In this embodiment, the agitator is not provided, and the basin-shaped base 2 is fixedly sealed with the washing tub 1, that is, the upper edge of the basin-shaped base 2 is fixedly sealed on the washing tub 1, and there are no water-permeable holes on the barrel wall of the washing tub 1. In this case, a water return port 15 communicating with the accommodation cavity 3 needs to be provided on the bottom surface 11 of the washing tub 1. The annular water flow on the inner and outer sides of the washing tub 1 turns outward and moves downward, and returns to the accommodation cavity 3 through the water return port 15, forming a water circuit cycle.

[0046] In this embodiment, refer to Figure 2 As shown, four annular water flow injection ports 12 are provided on the bottom surface 11 in a concentric and nested manner, and a water return port 15 is also provided on the bottom surface 11. The water return port 15 is arranged outside the water flow injection ports 12, and the water return port 13 is concentric with the water flow injection ports 12 and is sleeved outside a plurality of water flow injection ports 12.

[0047] In this embodiment, an annular partition plate 16 extending downward is provided at the lower end of the bottom surface 11 of the washing tub 1. The partition plate 16 is arranged at the position between the water return port 15 and the outermost water flow injection port 12. The partition plate 16 is coaxially arranged with the washing tub 1. When the impeller 4 rotates, it mainly agitates the area surrounded by the partition plate 16, which is beneficial to the return water of the water return port 15 and avoids the influence of the rotation of the impeller 4 on the water return port 15.

[0048] In this embodiment, the impeller 4 includes a shaft seat 41 and a plurality of blades 42 extending outward at intervals along the circumference of the shaft seat 41; when the impeller 4 rotates, the water flow in the accommodation cavity 3 is stirred by the blades 42; preferably, the blades are inclined to increase the water stirring ability and improve the water flow injection speed.

[0049] In other embodiments, the blade 42 can also be set vertically.

[0050] The washing method of the washing machine in this embodiment includes the following steps:

[0051] A. Water injection step: After putting the clothes into the washing tub 1, start the washing machine, and then add water into the washing tub 1 to the set water level.

[0052] B. Washing step: Drive the impeller 4 to rotate. The impeller 4 agitates the water in the accommodating cavity 3 and enters the washing cavity through the water flow jet orifice 12, and the water flow impacts the clothes floating in the washing cavity.

[0053] Refer to Figure 4 and Figure 5 This is the second embodiment of the washing machine proposed by the present invention. The difference between this embodiment and the requirements of the first embodiment is that there is no drainage plate provided, and other structures may be the same as those of the first embodiment.

[0054] A washing machine includes a washing tub 1. When washing clothes, the clothes are put into the washing tub. A basin-shaped base 2 is provided below the washing tub 1. A rotatable impeller 4 is provided in the accommodating cavity 3 between the bottom surface 11 of the washing tub 1 and the basin-shaped base 2. A water flow jet orifice 12 is formed on the bottom surface 11 of the washing tub 1, and the water flow jet orifice 12 communicates with the accommodating cavity 3 and the washing tub 1. By providing the water flow jet orifice 12 on the bottom surface 11 of the washing tub 1 and providing the rotatable impeller 4 in the accommodating cavity 3 between the bottom surface of the washing tub 1 and the basin-shaped base 2; the rotation of the impeller 4 can jet the water flow in the accommodating cavity 3 into the washing cavity, and then jet it onto the clothes floating in the washing cavity, so that the clothes float up and down in the washing cavity, which is beneficial to impacting the dirt on the clothes, improving the cleaning degree of rinsing, and increasing the cleanliness ratio of the clothes; and the agitator is omitted, and the clothes are mainly washed by the upward-impacting water flow, avoiding the wear, pulling deformation, etc. of the clothes, which is beneficial to protecting the clothes.

[0055] In this embodiment, the water flow jet orifice 12 is a plurality of slit-shaped annular orifices arranged concentrically at intervals, so as to form multiple rings of annular jet water flows impacting on the clothes, ensuring the intensity of the water flow and being beneficial to the cleaning of the clothes. The water flow jet orifice 12 is a vertical orifice in the up-and-down direction, so that the water flow ejected through the water flow jet orifice 12 jets vertically upward.

[0056] In this embodiment, a water return orifice 15 is also provided outside the water flow jet orifice 12. An annular partition plate 16 extending downward is provided at the lower end of the bottom surface 11 of the washing tub 1, and the partition plate 16 is arranged at the position between the water return orifice 15 and the outermost water flow jet orifice 12. The partition plate 16 is coaxially arranged with the washing tub 1. When the impeller 4 rotates, it mainly agitates the area surrounded by the partition plate 16, which is beneficial to the water return of the water return orifice 15 and avoids the influence of the rotation of the impeller 4 on the water return orifice 15.

[0057] Refer to Figure 6 and Figure 7, which is the third embodiment of the washing machine proposed by the present invention. The difference between this embodiment and the requirements of the first embodiment is that the basin-shaped base extends upward to form an outer tub sleeved outside the washing tub, and other structures may be the same as those of the first embodiment.

[0058] A washing machine includes a washing tub 1. When washing clothes, the clothes are put into the washing tub. A basin-shaped base 2 is provided below the washing tub 1. A rotatable impeller 4 is provided in the accommodation cavity 3 between the bottom surface 11 of the washing tub 1 and the basin-shaped base 2. A water flow jet port 12 is formed on the bottom surface 11 of the washing tub 1, and the water flow jet port 12 communicates the accommodation cavity 3 and the washing tub 1. By forming a water flow jet port 12 on the bottom surface 11 of the washing tub 1 and providing a rotatable impeller 4 in the accommodation cavity 3 between the bottom surface of the washing tub 1 and the basin-shaped base 2; the rotation of the impeller 4 can jet the water flow in the accommodation cavity 3 into the washing cavity, and then jet it onto the clothes floating in the washing cavity, so that the clothes float up and down in the washing cavity, which is beneficial to impact the dirt on the clothes, improve the cleaning degree of rinsing, and improve the cleanliness ratio of the clothes; and the agitator is omitted, and the clothes are mainly washed by the upward-impacting water flow, avoiding the wear and pulling deformation of the clothes, which is beneficial to protecting the clothes.

[0059] In this embodiment, the basin-shaped base 2 extends upward to form an outer tub sleeved outside the washing tub 1. Water-permeable holes are provided on the barrel wall of the washing tub 1, so that the water between the outer tub and the washing tub 1 can always supplement the water jetted out of the accommodation cavity 3. That is, after the water is jetted from the water flow jet port 12 in the accommodation cavity 3, it returns between the washing tub 1 and the outer tub, and the water in the washing tub 1 is supplemented between the washing tub 1 and the outer tub through the water-permeable holes. Therefore, the multiple slit-shaped annular openings formed on the bottom surface 11 of the washing tub 1 are all water flow jet ports 12, which is beneficial to increasing the area of water flow jet and increasing the impact force on the clothes; and the water returns between the washing tub 1 and the outer tub, avoiding the formation of turbulent flow in the washing tub 1 and the knotting of the clothes, which is beneficial to improving the cleanliness ratio of the clothes.

[0060] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A washing machine, comprising a washing tub, characterized in that, a basin-shaped base is provided below the washing tub, a rotatable impeller is provided in the accommodation cavity between the bottom surface of the washing tub and the basin-shaped base, and a water flow jet opening communicating the accommodation cavity and the washing cavity surrounded by the washing tub is formed on the bottom surface of the washing tub; the water flow jet opening is a plurality of slit-shaped annular openings arranged concentrically at intervals, an annular drainage plate is provided at the lower end of the bottom surface of the washing tub, and a drainage channel connected to the water flow jet opening is formed between the adjacent drainage plates and the bottom surface; the drainage channel has a drainage cavity extending downward and outward along the water flow jet opening, an inflow port communicating with the accommodation cavity is provided downward along the outer side of the drainage cavity, and a vertical inflow channel is provided between the drainage cavity and the inflow port.

2. The washing machine according to claim 1, characterized in that, the washing machine further comprises a driving device for driving the impeller to rotate so that the water in the accommodation cavity enters the washing cavity through the water flow jet opening.

3. The washing machine according to claim 1, characterized in that, the drainage plate has an outer bending portion extending downward and outward along the inner circle of the annular opening, an outer extension portion extending downward and bent outward along the outer side of the outer bending portion, and an inner extension portion extending outward and downward along the bottom surface.

4. The washing machine according to any one of claims 1 to 3, characterized in that, the basin-shaped base and the washing tub are hermetically and fixedly arranged, and a water return port communicating with the accommodation cavity is provided on the bottom surface of the washing tub.

5. The washing machine according to claim 4, characterized in that, a downward-extending annular partition plate is provided at the lower end of the bottom surface of the washing tub, and the partition plate is arranged at a position between the water return port and the water flow jet opening.

6. The washing machine according to any one of claims 1 to 3, characterized in that, the basin-shaped base extends upward to form an outer tub sleeved outside the washing tub.

7. A washing method of the washing machine according to any one of claims 1 to 6, characterized in that, comprises the following steps: A. Water injection step, adding water to the washing tub; B. Washing step, driving the impeller to rotate, the impeller agitates the water in the accommodation cavity to enter the washing cavity through the water flow jet opening, and the water flow impacts the clothes floating in the washing cavity.

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