Washing machine

Abstract

The present invention discloses a washing machine, which includes a housing, a washing tub rotatably arranged inside the housing. The washing tub is a water storage tub structure, a drainage chamber arranged below the washing tub and communicating with the inside of the washing tub. Cleaning particles are arranged in the drainage chamber for cleaning the inner wall of the chamber. The washing machine further includes a water receiving trough for supporting the washing tub. The water receiving trough is arranged outside the washing tub, and at least a part of it is arranged below the washing tub. The water receiving trough is also provided with a drainage component; a first drainage port is arranged at the bottom of the washing tub, and the first drainage port and the drainage component are communicated through the drainage chamber. The cleaning particles can move freely in the drainage chamber along with the water flow, and drive the cleaning particles to impact and rub the inner wall of the drainage chamber through the water flow during the washing and / or rinsing stage to achieve the cleaning of the inner wall. The washing machine of the present invention has a simple structure, low cost, and has the characteristic of self-cleaning.

Description

Technical Field

[0001] The present invention belongs to the field of washing equipment, and more specifically, relates to a washing machine. Background Art

[0002] With the continuous development of washing machine technology, washing machines have increasingly tended to have large capacities. While the washing machine gradually becomes larger in capacity, it will inevitably lead to an increase in the overall size of the washing machine. At the same time, in the existing washing machines, water is distributed in the washing tub and the outer tub during washing, that is, there is also water distributed between the outer tub and the washing tub, resulting in a large amount of water consumption and waste of water resources; dirt in the existing washing machines is easily retained between the outer tub and the washing tub, thus breeding bacteria. And because there is water distributed between the outer tub and the washing tub, the amount of detergent used is also relatively large, causing waste of detergent resources and being unfavorable for cost saving.

[0003] Therefore, related technologies have proposed washing machines that use the washing tub as a water storage tub. Since the washing tub is a rotating tub, its drainage structure is the key point of research and development. Some manufacturers directly or indirectly drain water to the outer tub outside the washing tub by means of centrifugal water throwing; some manufacturers also set a drain port and a drain valve that can control the opening and closing of the drain port on the bottom wall of the washing tub, and discharge the water to the lower water receiving device by opening the drain valve. However, the first centrifugal water throwing method mentioned above has a relatively high load requirement for the motor, greatly shortening the service life of the motor; the second method has relatively strict requirements for the stopping position of the washing tub, not only having high production and assembly accuracy, but also high control accuracy requirements, resulting in a low product qualification rate.

[0004] Also, since the washing tub is a rotating tub, the water in the washing tub cannot be directly heated, which also greatly limits the function of washing with heated water. Therefore, some manufacturers have made improvements to this defect by introducing heated water into the washing tub. For example, the Chinese patent with the application number CN200420081848.3 discloses an improvement in the structure of an automatically inclined washing machine. The inner tub is a perforated inner tub, which is inclinedly arranged in the outer tub. A heater is provided at the water inlet of the upper part of the box body, and the heater can be an electric wire heating element, a PTC ceramic heating element or an electrothermal film heating element.

[0005] The Chinese patent with the application number CN201510104031.6 developed by the applicant before discloses a washing machine and its control method, including an inner tub and an outer tub. The inner tub is provided with drain holes only at the upper part of the tub body, and other parts are sealed. The inner tub is a water storage tub. A heating device is provided in the outer tub, and the chamber between the inner and outer tubs forms a water heating space, which is communicated with the inner tub through a circulating water system to introduce the heated water into the inner tub, or heat the water in the inner tub through heat transfer of the inner tub.

[0006] However, the first water heating method mentioned above is difficult to control the temperature due to different water pressures, and the water intake time is too long; while the second heating method requires increased production and use costs, and also occupies volume in the machine, and cannot achieve the effect of capacity expansion.

[0007] In view of this, the present invention has developed a drainage chamber which is arranged at the lower part of the washing tub and is always connected to the inside of the washing tub, and the drainage is transferred through the drainage chamber. Since the drainage chamber is always connected to the inside of the washing tub, the stains from washing will also accumulate in the drainage chamber. In order to avoid secondary pollution during laundry, the present invention provides a structure for cleaning the drainage chamber, and at the same time uses a heating unit installed in the drainage chamber to heat the water in the washing tub. Summary of the invention

[0008] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a washing machine with a simple structure, low cost and a clean drum.

[0009] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a washing machine, comprising a housing,

[0010] A washing tub, which is a water storage tub, is rotatably disposed in the housing;

[0011] A water receiving tank is arranged outside the washing tub, at least a part of which is arranged below the washing tub, and the water receiving tank is provided with a drainage component;

[0012] a drainage chamber, disposed below the washing tub, forming a drainage passage connecting the interior of the washing tub with the drainage component;

[0013] The cleaning particles are movably arranged in the drainage chamber. During the washing and / or rinsing stage, the cleaning particles are driven by water flow to collide with and rub against the inner wall of the drainage chamber to clean the inner wall.

[0014] Furthermore, the bottom wall of the washing tub is provided with a first drain port, which is communicated with the drainage chamber, and the first drain port is provided with a first filter unit for blocking the cleaning particles from entering the washing tub;

[0015] The drainage component is provided with a second filter unit for blocking the cleaning particles from being discharged.

[0016] Furthermore, the drainage component includes a particle receiving and releasing chamber for holding the cleaning particles during drainage and automatically releasing the cleaning particles into the drainage chamber by buoyancy when water enters, and a drainage valve chamber equipped with a drainage valve, and the second filter unit is arranged between the particle receiving and releasing chamber and the drainage valve chamber.

[0017] Further, the washing machine further includes a heating unit disposed in the drainage chamber and / or the drainage component for heating the washing water in the washing tub.

[0018] Further, the heating unit is disposed directly below a position deviating from the position communicating with the inside of the washing tub in the drainage chamber and / or directly above a position deviating from the position communicating with the drainage component.

[0019] Further, the drainage chamber further includes a second drainage port disposed at the bottom of the water receiving tank, the drainage component includes a drainage pipe communicating with the second drainage port, and the heating unit is disposed in the drainage pipe.

[0020] Preferably, the drainage pipe includes a main drainage pipe and a branch pipe disposed on the side wall of the main pipe, and the heating unit is disposed in the branch pipe.

[0021] Also preferably, a third filtering unit for blocking the cleaning particles from entering the branch pipe is provided at the connection between the main pipe and the branch pipe.

[0022] Further, the drainage chamber includes a first cavity communicating with the inside of the washing tub and a second cavity communicating with the drainage component, and the first cavity and the second cavity are sealingly connected in a relatively rotatable manner.

[0023] Preferably, the upper end of the first cavity is sealingly connected to the bottom wall of the washing tub, the lower end opens towards the second cavity, the lower end of the second cavity is sealingly connected to the bottom wall of the water receiving tank, the upper end opens towards the first cavity, and the lower end opening of the first cavity and the upper end opening of the second cavity are sleeved with each other.

[0024] Further, the drainage chamber is disposed around the drive shaft of the washing tub and is internally provided with a stirring mechanism for stirring the water flow.

[0025] Preferably, the stirring mechanism is stirring blades disposed on the bottom wall of the washing tub and / or the peripheral wall of the drainage chamber and / or the drive shaft.

[0026] Further, at least a part of the lower end of the first cavity extends into the interior of the second cavity, a sealing ring is sleeved outside the first cavity extending into the second cavity, the inner ring of the sealing ring is in sealing contact with the first cavity, and the outer ring is in sealing contact with the second cavity.

[0027] Preferably, the sealing ring is a skeleton oil seal and is fixedly installed on the inner wall of the upper end of the second cavity, and the inner ring of the sealing ring is in sliding contact with the outer peripheral wall of the first cavity.

[0028] Further, the washing machine is provided with a water level detection unit for detecting the water level in the washing tub. The water level detection unit is arranged in the drainage chamber or the drainage component, or the water level detection unit communicates with the drainage chamber or the drainage component.

[0029] Preferably, the water level detection unit includes an air chamber and an air duct. One end of the air duct communicates with the drainage chamber or the drainage component, and the other end communicates with the air chamber. A fourth filtering unit for blocking the cleaning particles from entering the air duct is arranged at the position where the drainage chamber or the drainage component communicates with the air duct;

[0030] And / or, the washing machine is provided with a circulating spraying system, including a water circulation channel. One end of the water circulation channel communicates with the drainage chamber or the drainage component, and the other end sprays water into the washing tub from above the washing tub. A fifth filtering unit for blocking the cleaning particles from entering the water circulation channel is arranged at the position where the drainage chamber or the drainage component communicates with the water circulation channel.

[0031] Further, a water guiding channel is arranged on the peripheral wall of the washing tub. The upper end of the water guiding channel communicates with the inside of the washing tub, and the lower end is provided with a water outlet. The washing water in the washing tub enters the water guiding channel from the upper end under the action of the centrifugal force of the rotation of the washing tub, and is guided to the water receiving tank or the drainage chamber through the water outlet from top to bottom for discharge.

[0032] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0033] In the washing machine of the present invention, a drainage chamber communicating with the inside of the washing tub is arranged on the bottom wall of the rotatable and water-containing washing tub, and cleaning particles are arranged in the drainage chamber to realize self-cleaning of the chamber. The structure is simple and the cleaning effect is good.

[0034] The drainage chamber of the present invention is respectively connected to the washing tub and the drainage component, and the water in the washing tub is heated through the heat transfer of the heated water in the drainage chamber and / or the drainage component. This structure can not only be used to heat water, but also be used as a drainage channel for the washing tub.

[0035] The washing machine of the present invention has a simple structure, low cost, high heating efficiency, and can control different heating temperatures in different gears according to different functions. It can not only heat for washing but also heat for sterilization, and the temperature control is accurate.

[0036] The following further describes in detail the specific embodiments of the present invention with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings, as part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not unduly limit the present invention. Obviously, the accompanying drawings in the following description are only some embodiments, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts. In the drawings:

[0038] Figure 1 is a schematic structural diagram of a washing machine according to the present invention;

[0039] Figure 2 is another schematic structural diagram of a washing machine according to the present invention;

[0040] Figure 3 is a schematic diagram of the arrangement of a water guiding channel of the washing machine according to the present invention;

[0041] Figure 4 is another schematic diagram of the arrangement of a water guiding channel of the washing machine according to the present invention;

[0042] Figure 5 is a schematic structural diagram of a drainage chamber of the washing machine according to the present invention;

[0043] Figure 6 is a schematic diagram of the installation structure of a drainage chamber and a water receiving tank of the washing machine according to the present invention;

[0044] Figure 7 is another schematic diagram of the installation structure of a drainage chamber and a water receiving tank of the washing machine according to the present invention;

[0045] Figure 8 is a schematic structural diagram of a drainage control valve of the washing machine according to the present invention;

[0046] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Embodiments

[0047] 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 with reference to the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0048] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It 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.

[0049] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] When the existing pulsator washing machine is washing clothes, the space between the inner tub (washing tub) and the outer tub (water storage tub) needs to be filled with water. However, this part of the water between the inner and outer tubs does not participate in the washing. Only the water in the inner tub truly participates in the washing, which results in a large waste of water resources. In addition, too much water between the inner and outer tubs will also reduce the concentration of detergent / laundry powder in the washing liquid. Many manufacturers have made improvements to the above defects and introduced a water-saving washing machine. That is, there are no drain holes on the barrel wall of the inner tub for water throwing. All the water for washing and rinsing is concentrated in the non-porous inner tub, making it both a water storage and washing tub and a centrifugal dewatering tub (also known as a non-porous inner tub). The outer tub of the non-porous water-saving washing machine is actually just a water receiving device that undertakes to collect the water thrown out by the non-porous inner tub during dehydration. When draining water, the rotation speed of the inner tub is increased. Under the action of centrifugal force, the water in the tub rises along the inner tub wall and is discharged from the water outlet below the balance ring at the upper part of the inner tub; or there is a controllable opening and closing drain port at the lower part of the inner tub, and most of the water is discharged from this drain port. During dehydration, the non-porous inner tub rotates at a high speed, and the water remaining in the clothes is thrown upward along the barrel wall of the non-porous inner tub through the water outlet and is discharged to the external outer tub, and then discharged through the drain port at the bottom of the outer tub and the drain pipe. Since the water in the "interlayer" between the inner and outer tubs of the traditional washing machine is saved, the water-saving effect can reach more than 50% on average.

[0051] On the basis of the above structure, some manufacturers have also put forward the concept of an expanded-capacity washing machine, made improvements to the outer tub, reduced the upper part of the outer tub, and only retained the lower part for receiving water when the inner tub is dehydrated. By providing a water guiding channel on the circumferential wall of the inner tub that guides water from top to bottom, the water is introduced into the lower water receiving structure. There is also a design that completely cancels the outer tub and realizes water receiving by adding a water receiving plate structure that is hermetically connected to the inner wall of the washing machine cabinet below the inner tub.

[0052] However, since the washing tub is a rotating tub, it is very difficult to directly drain the washing water in the washing tub after washing is completed. If a drainage channel is provided, the stains carried by the washing water in the channel will accumulate over time and cause secondary pollution to the washed clothes. In addition, the washing water in the washing tub cannot be directly heated, which limits some additional washing functions of the washing machine.

[0053] In view of the above defects, the washing machine of the present invention has made some improvements. A drainage chamber communicating with the inside of the washing tub is provided below the washing tub, and cleaning particles are provided in the drainage chamber to clean the inner wall of the drainage chamber during each washing by using the cleaning particles. In addition, the water in the drainage chamber can be heated and transferred to the washing tub through heat transfer, so as to realize the heating of the water in the washing tub.

[0054] As Figures 1 to 4 shown, a washing machine of the present invention includes a housing 1, a washing tub 2 rotatably provided in the housing, a water receiving tank 5 supporting the washing tub 2, the water receiving tank 5 is provided outside the washing tub 2, and at least a part of it is provided below the washing tub 2. The water receiving tank 5 is provided with a drainage component 6. The washing tub 2 is a water storage bucket structure. A drainage chamber 3 is provided below the washing tub 2 to form a drainage passage connecting the inside of the washing tub 2 and the drainage component 6. Cleaning particles 9 are provided in the drainage chamber 3. The cleaning particles 9 are at least one, preferably 3 - 20, and generally about 10 are provided. They can move freely with the water flow in the drainage chamber 3, and the cleaning particles 9 are driven by the water flow to impact and rub the inner wall of the drainage chamber 3 during the washing and / or rinsing stage to realize the inner wall cleaning.

[0055] The drainage chamber 3 is arranged around the drive shaft 20 of the washing tub 2. In order to increase the flow intensity of the water flow in the drainage chamber 3, a stirring mechanism (not shown in the figure) for stirring the water flow is provided inside. Preferably, the stirring mechanism is stirring blades provided on the bottom wall of the washing tub and / or the peripheral wall of the drainage chamber and / or the drive shaft. Generally, the reinforcing ribs on the bottom wall of the washing tub are used as stirring blades.

[0056] The washing machine of the present invention further includes a balance ring 7 provided at the upper opening of the washing tub 2. The balance ring 7 is hermetically connected to the washing tub 2. A first drain port 21 is provided on the bottom wall of the washing tub 2. The first drain port 21 and the drainage component 6 are connected through the drainage chamber 3. The first drain port 21 is provided with a first filtering unit (not shown in the figure) for blocking the cleaning particles 9 from entering the washing tub 2. Preferably, the first filtering unit can adopt a filtering fence structure to facilitate the passage of lint. The drainage component 6 is provided with a second filtering unit 60 for blocking the cleaning particles 9 from being discharged.

[0057] As Figure 8As shown, the drainage chamber 3 further includes a second drain port 50 provided at the bottom of the water receiving tank 5. The drainage member 6 includes a drainage pipe 62 communicated with the second drain port 50. The drainage pipe 62 is communicated with the drainage chamber 3 through the second drain port 50. A drainage control valve 61 for opening and closing the drainage pipe is provided on the drainage pipe 62. The drainage control valve 61 is communicated with a pipe 10 for draining to the outside. The drainage control valve 61 includes a particle receiving and releasing chamber 611 for containing the cleaning particles 9 during drainage and automatically releasing the cleaning particles 9 into the drainage chamber 3 by buoyancy during water inlet, and a drainage valve chamber 612 where a drainage valve 610 is installed. The second filtering unit 60 is provided between the particle receiving and releasing chamber 611 and the drainage valve chamber 612.

[0058] The water receiving tank 5 is connected to the outer shell 1 of the washing machine through a vibration damping unit 8. The water receiving tank 5 supports the washing tub 2, enabling the washing tub to be rotatably arranged inside the outer shell and collecting the washing water discharged from the washing tub, which is discharged to the outside of the washing machine by the drainage member communicated with the water receiving tank. The vibration damping unit 8 can adopt the hanger vibration damping structure of the existing pulsator washing machine (refer to Figure 1 and Figure 2 ), or can adopt a damping vibration damping structure installed under the water receiving tank to support upward, or adopt the above combination.

[0059] The water receiving tank 5 can be a bucket-shaped structure (refer to Figure 2 , Figure 6 and Figure 7 ), or a disk-shaped structure, or a groove structure composed of a support plate supporting under the washing tub and an annular rib provided above the support plate; it can also adopt the outer tub of the existing washing machine or a groove structure lower than the upper edge of the washing tub (refer to Figure 3 and Figure 4 ).

[0060] During dehydration, the water in the washing tub 2 can be directly thrown out into the water receiving tank 5 through the dehydration port provided at the upper end of the peripheral wall of the washing tub 2, such as the structure of the existing tubless washing machine, or a water guiding channel 22 is provided on the peripheral wall of the washing tub 2, such as the inner wall or the outer wall (refer to Figure 3 and Figure 4 ). The upper end of the water guiding channel 22 is communicated with the inside of the washing tub 2, and the lower end is provided with a water outlet, which can be provided on the peripheral wall of the washing tub or on the bottom wall of the washing tub. The water in the washing tub enters the water guiding channel 22 from the upper end of the water guiding channel 22 under the action of the centrifugal force of the rotation of the washing tub and is guided to the water receiving tank 5 from top to bottom through the water outlet (refer to Figures 2 to 4 ). The water receiving tank 5 is further provided with a third drain port 51, and the water introduced into the water receiving tank 5 through the water guiding channel 22 is discharged from the third drain port 51 (refer to Figure 3 and Figure 4 ).

[0061] Alternatively, the water receiving tank 5 is a support plate structure (refer to Figure 1 ), a water guiding channel 22 is arranged on the peripheral wall of the washing tub 2, the upper end of the water guiding channel 22 communicates with the inside of the washing tub 2, and the lower end extends and communicates with a first drain port 21 on the bottom wall of the washing tub 2, and the drainage passes through the drainage chamber 3 and the drainage component 6 and is discharged.

[0062] As Figure 1 and Figure 2 shown, the washing machine according to the present invention further includes a heating unit 4, which is arranged in the drainage chamber 3 and / or the drainage component 6 and is used for heating the washing water in the washing tub 2.

[0063] Embodiment 1

[0064] As Figure 1 shown, the heating unit 4 in this embodiment is arranged in the drainage chamber 3; it is arranged and / or offset from directly above the second drain port 50 below the first drain port 21 on the bottom wall of the washing tub 2.

[0065] The setting structure of the heating unit 4 offset from directly below the first drain port 21 can prevent the damage of the heating unit 4 caused by the impact of the water flow on the heating unit 4 during drainage or the water leakage at the installation location caused by the shaking of the heating unit 4. The setting structure of the heating unit 4 offset from directly above the water inlet of the drainage component, that is, the second drain port 50, can prevent the lint from accumulating and winding around the heating unit 4 during drainage, affecting the heating efficiency and the drainage speed.

[0066] Embodiment 2

[0067] As Figure 2 shown, the drainage component 6 in this embodiment includes a drainage pipe 62 communicating with the second drain port 50, and the heating unit 4 is arranged in the drainage pipe 62;

[0068] Preferably, the drainage pipe 62 includes a main drainage pipe 621 and a branch pipe 622 arranged on the side wall of the main pipe 621, and the heating unit 4 is arranged in the branch pipe 622. This structure can reduce the impact of the drainage water flow on the heating unit and also avoid the heating unit affecting the drainage speed.

[0069] More preferably, a third filtering unit (not shown in the figure) for blocking the cleaning particles from entering the branch pipe 622 is arranged at the connection between the main pipe 621 and the branch pipe 622. Preferably, the third filtering unit can adopt a filtering fence structure, which is conducive to the passage of lint.

[0070] The washing machine of the present invention can adopt the heating unit setting method of Embodiment 1 or Embodiment 2 alone, or a combination of both to improve the heating efficiency.

[0071] Embodiment 3

[0072] As Figure 5 shown, the drainage chamber 3 described in this embodiment includes a first chamber 31 and a second chamber 32, and the first chamber 31 and the second chamber 32 are sealingly connected in a relatively rotatable manner. At least a part of the peripheral wall of the first chamber 31 extends into the interior of the second chamber 32. A sealing ring 33 is sleeved on the outer peripheral wall of the first chamber 31. One side of the sealing ring 33 is in sealing contact with the first chamber 31, and the other side is in sealing contact with the second chamber 32.

[0073] Furthermore, the sealing ring 33 is a skeleton oil seal and is fixedly installed on the inner wall of the second chamber 32 near one end of the first chamber 31. The inner ring of the sealing ring 33 is in sliding contact with the outer peripheral wall of the first chamber 31.

[0074] Preferably, the upper end of the first chamber 31 is sealingly connected to the bottom wall of the washing tub 2, the lower end opens towards the second chamber 32, and the interior is communicated with the first drain port 21. The lower end of the second chamber 32 is sealingly connected to the water receiving tank 5, the upper end is open, and the interior is communicated with the second drain port 50. The lower end opening of the first chamber 31 and the upper end opening of the second chamber 32 are sleeved with each other.

[0075] Also preferably, one end of the heating unit 4 is inserted into the interior of the drainage chamber 3 from the outside of the peripheral wall of the second chamber 32. There is a certain installation distance between the lower end edge of the first chamber 31 and the heating unit 4 to prevent the heating unit from being unstable due to the agitation of the water flow when the two chambers rotate relative to each other. Alternatively, the heating unit passes through the bottom of the water receiving tank and is inserted into the interior of the drainage chamber through the lower end of the second chamber 32.

[0076] More preferably, the side wall of the drainage chamber 3 has a heat insulation layer. That is, the inner walls of the first chamber 31 and the second chamber 32 are provided with heat insulation layers.

[0077] Embodiment Four

[0078] The washing machine described in this embodiment is provided with a water level detection unit (not shown in the figure) for detecting the water level of the washing tub. The water level detection unit is arranged in the drainage chamber or the drainage pipe, or the water level detection unit is communicated with the drainage chamber or the drainage pipe.

[0079] Preferably, the water level detection unit includes an air chamber and a gas guide pipe. One end of the gas guide pipe is communicated with the drainage chamber or the drainage component, and the other end is communicated with the air chamber. A fourth filtering unit for blocking the cleaning particles from entering the gas guide pipe is arranged at the position where the drainage chamber or the drainage pipe is communicated with the gas guide pipe.

[0080] Embodiment Five

[0081] The washing machine described in this embodiment is further provided with a circulating spray system (not shown in the figure), including a water circulation channel. One end of the water circulation channel is communicated with the drainage chamber or the drainage component, and the other end sprays water into the washing tub from above the washing tub. A fifth filtering unit for blocking the cleaning particles from entering the water circulation channel is provided at the position where the drainage chamber or the drainage component is communicated with the water circulation channel.

[0082] Embodiment Six

[0083] As Figure 3 and Figure 4 As shown, the water guiding channel 22 of the present invention is an independent hollow structure, including a water inlet 221 provided at the upper end and a water outlet 222 provided at the lower end. A water guiding chamber 220 from the water inlet 221 to the water outlet 222 is provided in the water guiding channel 22;

[0084] Alternatively, the water guiding channel is a cover structure, covering the peripheral wall of the washing tub, and cooperating with the peripheral wall of the washing tub to form a water guiding chamber for guiding water downward, and the upper end is communicated with the inside of the washing tub.

[0085] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the technical solution scope of the present invention, can make some changes or modifications using the technical content prompted above into equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention's solution.

Claims

1. A washing machine, comprising a housing, characterized in that: Further included is a washing tub, which is a water storage tub and is rotatably arranged inside the housing. A first drain opening is provided on the bottom wall of the washing tub; a water receiving tank, which is arranged outside the washing tub, and at least a part of it is arranged below the washing tub. The water receiving tank is connected to the housing through a damping unit. The water receiving tank supports the washing tub, and the water receiving tank is provided with a drainage component; a drainage chamber, which is arranged below the washing tub, and includes a first cavity that communicates with the inside of the washing tub through the first drain opening and a second cavity that communicates with the drainage component. The first cavity and the second cavity are sealingly connected rotatably relative to each other, forming a drainage passage that connects the inside of the washing tub and the drainage component; cleaning particles, which are movably arranged in the drainage chamber, and drive the cleaning particles to impact and rub the inner wall of the drainage chamber through water flow during the washing and / or rinsing stage to achieve the cleaning of the inner wall; the drainage chamber further includes a second drain opening provided at the bottom of the water receiving tank. The drainage component includes a drainage pipe that communicates with the second drain opening. The drainage pipe includes a main drainage pipe and a branch pipe provided on the side wall of the main drainage pipe; a first filtering unit that blocks the cleaning particles from entering the washing tub is provided at the first drain opening. A second filtering unit that blocks the cleaning particles from being discharged is provided on the drainage component. A third filtering unit that blocks the cleaning particles from entering the branch pipe is provided at the connection between the main drainage pipe and the branch pipe; 2. The washing machine according to claim 1, characterized in that: the drainage component includes a particle receiving and discharging chamber that stores the cleaning particles during drainage and automatically drops the cleaning particles into the drainage chamber by buoyancy during water inlet, and a drainage valve chamber equipped with a drainage valve. The second filtering unit is arranged between the particle receiving and discharging chamber and the drainage valve chamber; 3. The washing machine according to claim 1, characterized in that: further included is a heating unit, which is arranged in the drainage chamber and / or the drainage component and is used to heat the washing water in the washing tub; 4. The washing machine according to claim 3, characterized in that: the heating unit is arranged directly below the position deviating from the position communicating with the inside of the washing tub and / or directly above the position deviating from the position communicating with the drainage component in the drainage chamber; 5. The washing machine according to claim 3, characterized in that: the heating unit is arranged in the drainage pipe; 6. The washing machine according to claim 3, characterized in that: the heating unit is arranged in the branch pipe; 7. The washing machine according to any one of claims 1 - 6, characterized in that: the upper end of the first cavity is sealingly connected to the bottom wall of the washing tub, and the lower end opens towards the second cavity. The lower end of the second cavity is sealingly connected to the bottom wall of the water receiving tank, and the upper end opens towards the first cavity. The lower end opening of the first cavity and the upper end opening of the second cavity are sleeved with each other; 8. The washing machine according to claim 7, characterized in that: the drainage chamber is arranged around the drive shaft of the washing tub, and a stirring mechanism for stirring the water flow is arranged inside; 9. The washing machine according to claim 8, characterized in that: the stirring mechanism is stirring blades arranged on the bottom wall of the washing tub and / or the peripheral wall of the drainage chamber and / or the drive shaft; 10. The washing machine according to claim 7, characterized in that: at least a part of the lower end of the first cavity extends into the second cavity. A sealing ring is sleeved outside the first cavity extending into the second cavity. The inner ring of the sealing ring is in sealing contact with the first cavity, and the outer ring is in sealing contact with the second cavity.

11. The washing machine according to claim 10, characterized in that: The sealing ring is a skeleton oil seal and is fixedly installed on the inner wall of the upper end of the second cavity. The inner ring of the sealing ring is in sliding contact with the outer peripheral wall of the first cavity.

12. The washing machine according to claim 1, characterized in that: The washing machine is provided with a water level detection unit for detecting the water level in the washing tub. The water level detection unit is arranged in the drainage chamber or the drainage component, or the water level detection unit communicates with the drainage chamber or the drainage component. And / or, the washing machine is provided with a circulating spray system, including a water circulation channel. One end of the water circulation channel communicates with the drainage chamber or the drainage component, and the other end sprays water into the washing tub from above the washing tub. A fifth filtering unit for blocking the cleaning particles from entering the water circulation channel is arranged at the position where the drainage chamber or the drainage component communicates with the water circulation channel.

13. The washing machine according to claim 12, characterized in that: The water level detection unit includes an air chamber and an air guide pipe. One end of the air guide pipe communicates with the drainage chamber or the drainage component, and the other end communicates with the air chamber. A fourth filtering unit for blocking the cleaning particles from entering the air guide pipe is arranged at the position where the drainage chamber or the drainage component communicates with the air guide pipe.

14. The washing machine according to claim 1, characterized in that: A water guiding channel is arranged on the peripheral wall of the washing tub. The upper end of the water guiding channel communicates with the inside of the washing tub, and the lower end is provided with a water outlet. The washing water in the washing tub enters the water guiding channel from the upper end under the action of the centrifugal force generated by the rotation of the washing tub, and is guided to the water receiving tank or the drainage chamber through the water outlet from top to bottom and discharged.

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