Washing tub and washing equipment

Abstract

The present invention discloses a washing tub and a washing device. The washing tub is a rotatable water bucket, and a water guiding channel for draining water from top to bottom is provided on the outer peripheral wall of the washing tub. The water guiding channel includes at least one inclined channel, and the side wall of the inclined channel away from the washing tub is inclined downward from top to bottom in a direction approaching the central axis of the washing tub. The washing device of the present invention includes a housing. The washing tub is rotatably arranged in the housing. The washing tub has a water holding structure. The water guiding channel is arranged on the outer 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 has a water outlet. The inclined design of the external water guiding channel of the washing tub of the present invention saves the space between the washing tub and the housing, relatively increases the capacity of the washing tub, realizes the expansion of the washing tub. At the same time, it alleviates the impact force at the moment when the water guiding channel discharges water, and reduces splashing of water.

Description

Technical Field

[0001] The present invention belongs to the field of washing, and more particularly, relates to a washing tub and a washing device having the same. Background Art

[0002] Traditional fully automatic pulsator washing machines generally include an inner tub, an outer tub, a vibration damping member, and a power system. During washing and dehydration, the inner tub rotates relative to the outer tub, causing the clothes to interact with the washing water to achieve the purpose of cleaning or dehydrating the clothes. Among them, the outer tub is installed outside the inner tub to provide support for the inner tub. The outer tub serves as a water storage tub, and drain holes are evenly distributed on the side wall of the inner tub to communicate the two inner and outer tubs. During the washing process, the clothes are placed in the inner tub, and the water levels in the two tubs are the same, but the outer tub does not contact the clothes. The outer tub of the existing washing machine is relatively large in volume relative to the inner tub, resulting in a large amount of washing water stored between the inner and outer tubs. The washing liquid between the two tubs cannot be fully utilized, which not only increases the water consumption for washing but also reduces the concentration of the washing liquid during washing, and also causes the overall volume of the washing machine to be relatively large. In addition, after using for a period of time, dirt will adhere to the inner wall of the outer tub and the outer wall of the inner tub, and even mildew will occur, which will further contaminate the washed clothes, and it is difficult to clean the tub walls.

[0003] In response to this situation, some manufacturers have made improvements. In order to save water resources, more and more washing machines adopt the method of a tubless inner tub, separating the inner and outer tubs, and only using the inner tub to store water while the outer tub has no water. Drain holes are provided at the upper end of the side wall of the inner tub. In this way, when the washing machine is dehydrating, the water is thrown onto the inner wall of the inner tub due to the centrifugal force and moves upward along the inner wall of the inner tub, and is discharged from the drain holes at the upper end of the inner tub. This improves the water-saving effect of the washing machine and saves the amount of detergent used.

[0004] However, there are the following problems in the above solutions. Since the washing machine rotates at a high speed during dehydration, the water in the clothes is thrown out through the drain holes on the side wall of the inner tub and directly hits the side wall of the outer tub, which is easy to splash everywhere. There is always water on the inner wall of the outer tub, which is still prone to bacterial growth and is not conducive to environmental protection.

[0005] Chinese Patent No. CN99230455.5 discloses a single-barrel water-saving washing machine. A water collecting device is provided at the mouth of the washing barrel. The water collecting port of the water collecting device surrounds the mouth of the washing barrel along the washing barrel. The water collecting cavity of the water collecting device located at the mouth of the barrel is connected to a number of drain pipes, which are symmetrically arranged from top to bottom along the outer wall of the washing barrel. During dehydration, the water collecting device collects the centrifugal water flow caused by high-speed rotation and guides it downward for drainage. Although this structure eliminates the outer barrel, when the washing machine is dehydrating, since all the washing water first enters the water collecting device, and the water collecting device is a ring structure, the downward drainage speed of the washing water filled inside is different, which destroys the balance of the high-speed rotation of the washing barrel. In addition, after the washing water enters the water collecting device, it is guided to the lower part of the washing barrel and converges towards the center for drainage, which is not conducive to drainage, making it difficult to drain the water concentrated in the water collecting cavity under the action of centrifugal force, resulting in the washing water concentrating at the upper end of the washing barrel, increasing the weight of the upper part of the washing barrel, further destroying the balance. Especially when there is a large amount of residual water in the washing barrel, most of the washing water is concentrated in the water collecting cavity and not drained, increasing the overall center of gravity of the washing barrel and the outer barrel, generating great vibration noise, and also increasing the working load of the dehydration motor, making it easy to damage the motor.

[0006] In view of this, the present invention is specifically proposed. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a washing barrel that can relatively expand the volume, reduce the space occupied by the water guiding channel, and improve the water discharge efficiency during dehydration.

[0008] Another object of the present invention is to provide a washing device having such a washing barrel.

[0009] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: A washing barrel, which is a rotatable water bucket. The outer peripheral wall of the washing barrel is provided with a water guiding channel for draining water from top to bottom. The water guiding channel includes at least one inclined channel, and the side wall of the inclined channel away from the washing barrel gradually inclines downward towards the direction close to the central axis of the washing barrel.

[0010] Further, the water guiding channel includes at least two channels. The first channel is provided with the water inlet of the water guiding channel and is communicated with the inside of the washing barrel. The second channel is arranged below the first channel and is the above-mentioned inclined channel.

[0011] Preferably, the inclined angle between the side wall of the second channel away from the washing barrel and the central axis of the washing barrel is 0° to 10°, and more preferably, the inclined angle is 1° to 3°.

[0012] Further, the side wall of the first channel away from the washing barrel is parallel to the direction of the central axis of the washing barrel from top to bottom.

[0013] Alternatively, the side wall of the first channel on the side away from the washing tub is inclined downward from top to bottom gradually in a direction approaching the central axis of the washing tub;

[0014] Preferably, the inclination angle of the side wall of the first channel on the side away from the washing tub is smaller than the inclination angle of the side wall of the second channel on the side away from the washing tub.

[0015] More preferably, the inclination angle between the side wall of the first channel on the side away from the washing tub and the central axis of the washing tub is 0° to 10°, and even more preferably, the inclination angle is 1° to 3°.

[0016] Furthermore, the side wall of the first channel on the side away from the washing tub is inclined downward from top to bottom gradually in a direction away from the peripheral wall of the washing tub connected to the first channel.

[0017] Furthermore, the water guiding channel further includes a third channel. The third channel is provided with an outlet of the water guiding channel. The third channel extends downward along the outer peripheral wall of the washing tub, and the outlet is lower than the lower edge of the outer peripheral wall of the washing tub;

[0018] Preferably, the outlet is lower than the lower end face of the bottom wall of the washing tub.

[0019] Furthermore, the third channel is parallel to the direction of the central axis of the washing tub from top to bottom.

[0020] Alternatively, the side wall of the third channel on the side away from the washing tub is inclined downward from top to bottom gradually in a direction approaching the central axis of the washing tub;

[0021] Preferably, the inclination angle of the side wall of the third channel on the side away from the washing tub is smaller than the inclination angle of the side wall of the second channel on the side away from the washing tub.

[0022] Preferably, the inclination angle between the side wall of the third channel on the side away from the washing tub and the central axis of the washing tub is 0° to 10°, and even more preferably, the inclination angle is 1° to 3°.

[0023] The present invention also provides a washing device having the above-mentioned washing tub, including a housing. The washing tub is rotatably arranged in the housing. The washing tub has a water holding structure. The water guiding channel is arranged on the outer 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 has an outlet. During dehydration, the washing tub rotates, and the washing water in the washing tub moves upward along the inner peripheral wall of the washing tub under the action of centrifugal force, enters the water guiding channel from the upper end of the water guiding channel, and the water guiding channel guides and discharges the washing water from top to bottom.

[0024] Furthermore, the upper end of the water guiding channel is provided with a water inlet, and the water guiding channel defines a drainage cavity communicating with the water inlet and the outlet.

[0025] Furthermore, the drainage cavity is separately defined by the hollow structure inside the water guiding channel up and down;

[0026] Alternatively, the water guiding channel includes a water channel housing and a part of the washing tub wall. The water channel housing is buckled on the washing tub wall and jointly forms a water flow channel with the washing tub wall. The drainage cavity is jointly defined by the water channel housing and the outer peripheral wall surface of the washing tub covered by the water channel housing.

[0027] Furthermore, the number of the water guiding channels is at least one, preferably at least two, and they are evenly spaced along the circumferential direction of the washing tub.

[0028] Furthermore, the washing device further includes a water receiving tank disposed below the washing tub for collecting the washing water discharged from the washing tub. The upper edge of the side peripheral wall of the water receiving tank extends upward and is higher than the position where the lower end water outlet of the water guiding channel is located;

[0029] Preferably, the height difference between the water outlet and the upper edge of the side peripheral wall of the water receiving tank is H1; the height of the side peripheral wall of the water receiving tank is H; the value range of the ratio of H1 to H is: 0.02 ≤ H1 / H ≤ 0.98.

[0030] Preferably, the value range of the ratio of H1 to H is: 0.1 ≤ H1 / H ≤ 0.9; or, the value range of the ratio of H1 to H is: 0.2 ≤ H1 / H ≤ 0.8; or, the value range of the ratio of H1 to H is: 0.25 ≤ H1 / H ≤ 0.75; or, the value range of the ratio of H1 to H is: 0.35 ≤ H1 / H ≤ 0.72; or, the value range of the ratio of H1 to H is: 0.4 ≤ H1 / H ≤ 0.7; or, the value range of the ratio of H1 to H is: 0.5 ≤ H1 / H ≤ 0.68; or, the value range of the ratio of H1 to H is: 0.55 ≤ H1 / H ≤ 0.65.

[0031] Furthermore, a sunken annular groove is provided at the bottom of the water receiving tank. The water discharged from the water outlet falls into the annular groove, and a drain port is provided at the lowest point of the annular groove.

[0032] Furthermore, the water outlet is above or level with the upper opening of the annular groove. The height difference between the water outlet and the upper opening of the annular groove is H2;

[0033] The value range of the ratio of H2 to H is: 0 ≤ H2 / H ≤ 0.8, or: 0.01 ≤ H2 / H ≤ 0.45, or: 0.02 ≤ H2 / H ≤ 0.25, or: 0.05 ≤ H2 / H ≤ 0.1.

[0034] Further, the water outlet extends into the annular groove or is flush with the opening, and the height difference between the upper opening of the annular groove and the water outlet is H3;

[0035] The value range of the ratio of H3 to H is: 0 ≤ H3 / H ≤ 0.5, or: 0.01 ≤ H3 / H ≤ 0.45, or: 0.02 ≤ H3 / H ≤ 0.25, or: 0.02 ≤ H3 / H ≤ 0.1.

[0036] Further, the depth of the annular groove is H4, and the value range of the ratio of H4 to H is: 0.01 ≤ H4 / H ≤ 0.75, or: 0.1 ≤ H4 / H ≤ 0.6, or: 0.2 ≤ H4 / H ≤ 0.5, or: 0.3 ≤ H4 / H ≤ 0.4.

[0037] Further, the annular groove is located at the outer peripheral edge of the bottom wall of the water receiving tank and surrounds the water receiving tank circumferentially, and the outer peripheral side wall of the annular groove is a part of the side peripheral wall of the water receiving tank.

[0038] Further, the upper edge of the inner peripheral side wall of the annular groove is chamfered and transitioned with the bottom wall of the water receiving tank, and the bottom wall of the water receiving tank is inclined and gradually lowered in the radial direction from the center to the annular groove.

[0039] Further, the radial width of the upper opening of the annular groove is r, and the radius of the water receiving tank is R. The value range of the ratio of r to R is: 0.1 ≤ r / R ≤ 0.5, or: 0.12 ≤ r / R ≤ 0.35, or: 0.15 ≤ r / R ≤ 0.25.

[0040] Further, the upper edge of the side peripheral wall of the water receiving tank extends in the outer circumference of the washing tub, and the upper edge height does not exceed the position of half of the height of the washing tub.

[0041] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0042] The washing tub of the present invention directly serves as a water storage tub, which can improve the utilization rate of washing water, reduce the usage amount of washing water, relatively reduce the usage amount of washing liquid, and at the same time, the washing tub is filled with water for washing, so as to save water and avoid pollution; on the other hand, the downward inclination design of the external water guiding channel of the washing tub saves the space between the washing tub and the outer shell, can relatively increase the capacity of the washing tub, realizes the expansion of the washing tub, and at the same time, at least a part of the side wall of the water guiding channel away from the washing tub is inclined downward gradually towards the direction close to the central axis of the washing tub, which alleviates the impact force at the moment when the water guiding channel discharges water and reduces splashing.

[0043] The washing device described in the present invention eliminates the structure in which the outer tub surrounds the upper half of the washing tub. The volume of the washing tub can be set larger, so that the amount of laundry can also increase accordingly, achieving the purpose of expanding the capacity of the washing device; the water receiving trough supports the washing tub and has a reasonable water receiving range through design, reducing costs; by reasonably setting the height of the water outlet in the water receiving trough, defining the positional relationship between the water outlet and the opening of the annular groove, the depth and the opening width of the annular groove, not only the water outlet speed is increased, but also the risk of water splashing outside the water receiving trough during the dehydration process can be avoided.

[0044] The following further describes in detail the specific embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] 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 constitute an improper limitation of 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:

[0046] Figure 1 is a schematic structural view of the water guiding channel of the present invention on the washing tub;

[0047] Figure 2 is a schematic structural view of the second channel of the present invention on the washing tub;

[0048] Figure 3 is a schematic structural view of the first channel of the present invention on the washing tub;

[0049] Figure 4 is a schematic structural view of the third channel of the present invention on the washing tub;

[0050] Figure 5 is a schematic view of the height difference between the water outlet of the water guiding channel of the present invention and the upper edge of the side wall of the water receiving trough;

[0051] Figure 6 is a schematic view of the height difference between the water outlet of the water guiding channel of the present invention above the annular groove and the opening of the annular groove;

[0052] Figure 7 is a schematic view of the height difference between the water outlet of the water guiding channel of the present invention in the annular groove and the opening of the annular groove;

[0053] Figure 8 is a schematic view of the ratio of the depth of the annular groove of the present invention to the height of the side wall of the water receiving trough;

[0054] Figure 9 is a schematic view of the ratio of the radial width of the annular groove of the present invention to the radius of the bottom wall of the water receiving trough.

[0055] It should be noted that these accompanying 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 reference to specific embodiments. Detailed Embodiments

[0056] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with 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.

[0057] In the description of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are 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, and therefore should not be construed as a limitation to the present invention.

[0058] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, 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.

[0059] As Figures 1 to 9 shown, the washing device of the present invention includes a housing (not shown in the figure), a washing tub 1 rotatably disposed in the housing, and a water receiving trough 2 disposed outside the washing tub 1 and at least a part of which is disposed below the washing tub 1. The washing tub 1 is a water storage tub structure. A water guiding channel 3 extending downward from top to bottom is provided on the peripheral wall of the washing tub 1. The upper end of the water guiding channel 3 communicates with the inside of the washing tub 1, and the lower end has a water outlet 31. The upper edge of the side peripheral wall 21 of the water receiving trough extends upward and is higher than the position where the water outlet 31 of the lower end of the water guiding channel 3 is located, so that the water outlet 31 is located inside the water receiving trough 2. The height of the upper edge of the side peripheral wall 21 of the water receiving trough does not exceed half of the height of the washing tub 1. Preferably, the distance from the upper edge of the side peripheral wall of the water receiving trough to the bottom of the washing tub is 1 / 5 - 2 / 5 of the height of the washing tub. Compared with a conventional outer tub, the height of the water receiving trough is greatly reduced, and the outer tub cover is also omitted, reducing the cost. The distance between the upper part of the washing tub and the housing is within the same safe shaking range of the upper part of the washing tub, which can increase the diameter of the washing tub, and the washing capacity of the washing device of the same volume is relatively increased.

[0060] The described water receiving tank 2 is connected to the housing of the washing device through a vibration damping unit (not shown in the figure). The water receiving tank 2 supports the washing tub 1, enabling the washing tub to be rotatably arranged within the housing and also collecting the washing water discharged from the washing tub, which is discharged to the outside of the washing device through a drainage component communicated with the water receiving tank. The vibration damping unit can adopt the hanging rod vibration damping structure of an existing pulsator washing device, or a damping vibration damping structure installed to support upward below the water receiving tank, or a combination of the above.

[0061] The water receiving tank 2 can be a bucket-shaped structure, a disc-shaped structure, or a groove structure composed of a support plate supporting below the washing tub and an annular rib provided above the support plate; it can also adopt the outer tub of an existing washing device or a groove structure lower than the upper edge of the washing tub.

[0062] When the washing tub 1 rotates for dehydration, the water in the washing tub 1 can be discharged outward through a water guiding channel 3 provided on the outer peripheral wall of the washing tub 1. The water in the washing tub 1 enters the water guiding channel 3 from the upper end of the water guiding channel 3 under the action of the centrifugal force of the rotation of the washing tub, and is guided downward through the water outlet 31 into the water receiving tank 2. The water receiving tank 2 is provided with a drainage port, and the water introduced into the water receiving tank 2 from the water guiding channel 3 is discharged from the drainage port.

[0063] As Figures 1 to 4 shown, the water guiding channel 3 described in the present invention includes at least one inclined channel, and the side wall of the inclined channel away from the washing tub is inclined downward gradually in a direction approaching the central axis L of the washing tub. This inclined design structure saves the space between the washing tub and the housing, can relatively increase the capacity of the washing tub, realizes the expansion of the washing tub. At the same time, this inclined design from top to bottom gradually approaching the central axis of the washing tub can alleviate the impact force at the moment when the water guiding channel discharges water, reducing the splashing of water at the bottom.

[0064] Embodiment 1

[0065] As Figure 1 and Figure 2 shown, the water guiding channel 3 described in this embodiment includes at least two channels. The first channel 32 is provided with an inlet 30 of the water guiding channel 3, which is communicated with the inside of the washing tub 1. The second channel 33 is arranged below the first channel 32 and is the above-mentioned inclined channel. The second channel 33 can be designed as a section in the middle of the water guiding channel 3, or the second channel can also be designed as the lowermost section of the water guiding channel (not shown in the figure). The second channel has an outlet of the water guiding channel.

[0066] Preferably, the inclination angle between the side wall 331 of the second channel 33 away from the washing tub and the central axis L of the washing tub is 0° to 10°, and more preferably, the inclination angle is 1° to 3°.

[0067] Embodiment 2

[0068] As shown Figure 3 in the figure, the side wall 321 on the side of the first channel 32 away from the washing tub is parallel to the direction of the central axis L of the washing tub from top to bottom.

[0069] Alternatively, the side wall on the side of the first channel away from the washing tub is inclined downward from top to bottom gradually towards the direction of approaching the central axis L of the washing tub (not shown in the figure);

[0070] Preferably, the inclination angle of the side wall 321 on the side of the first channel 32 away from the washing tub is smaller than the inclination angle of the side wall 331 on the side of the second channel 33 away from the washing tub.

[0071] More preferably, the inclination angle between the side wall 321 on the side of the first channel 32 away from the washing tub and the central axis L of the washing tub is 0° to 10°, and more preferably, the inclination angle is 1° to 3°.

[0072] Embodiment III

[0073] As shown Figure 3 in the figure, the side wall 321 on the side of the first channel 32 away from the washing tub is inclined downward from top to bottom gradually towards the direction away from the peripheral wall 11 of the washing tub connected to the first channel.

[0074] That is, on the basis of the above embodiment, the peripheral wall of the washing tub is designed to be inclined upward from bottom to top gradually towards the direction away from the central axis L of the washing tub. The inclination angle between the peripheral wall 11 of the washing tub and the central axis is 1° to 10°, preferably 2° to 5°, and more preferably 3°. This structure can improve the upward climbing speed of the washing water in the washing tub along the inner wall.

[0075] Embodiment IV

[0076] As shown Figure 4 in the figure, the water guiding channel 3 of this embodiment further includes a third channel 34. The third channel 34 is arranged at the lowermost end of the water guiding channel and has the water outlet 31 of the water guiding channel 3. The third channel 34 extends downward along the outer peripheral wall of the washing tub, and the water outlet 31 is lower than the lower edge of the outer peripheral wall of the washing tub;

[0077] Preferably, the water outlet 31 is lower than the lower end face of the bottom wall 12 of the washing tub.

[0078] Further, the third channel 34 is parallel to the direction of the central axis L of the washing tub from top to bottom.

[0079] Alternatively, the side wall 341 on the side of the third channel 34 away from the washing tub is inclined downward from top to bottom gradually towards the direction of approaching the central axis L of the washing tub;

[0080] Preferably, the inclination angle of the side wall 341 of the third channel 34 away from the washing tub is smaller than the inclination angle of the side wall 331 of the second channel 33 away from the washing tub.

[0081] More preferably, the inclination angle between the side wall 341 of the third channel 34 away from the washing tub and the central axis L of the washing tub is 0° to 10°, and more preferably, the inclination angle is 0° to 3°.

[0082] As Figures 5 to 9 shown, the water guiding channel 3 on the washing tub in the figure is only a schematic diagram and does not limit its installation method. The designers of the present invention found that in the washing equipment described in the present invention, when the load in the washing tub 1 is large or the water absorption rate of the load is high, when the washing tub 1 rotates to the high dehydration speed, the water speed of the water guided out by the water guiding channel 3 is high and the water output per unit time is large. If the water outlet 31 is far from the bottom wall 22 of the water receiving tank, the water impact on the bottom wall 22 of the water receiving tank is likely to splash outside the water receiving tank 2; if the water outlet 31 is close to the bottom wall 22 of the water receiving tank, it will affect the water output per unit time and cause the water not to be discharged quickly.

[0083] Therefore, through a large number of experimental tests, the designers found that the water outlet 31 has a better position in the water receiving tank 2. Among them, the height difference between the water outlet 31 and the upper edge of the side wall 21 of the water receiving tank is H1; the height of the side wall 21 of the water receiving tank is H; the value range of the ratio of H1 to H is: 0.02 ≤ H1 / H ≤ 0.98. By reasonably setting the height difference between the water outlet 31 and the upper edge of the side wall 21 of the water receiving tank, the probability of water splashing outside the water receiving tank can be reduced, and the dehydration speed will not be affected.

[0084] Example Five

[0085] As Figure 5As shown in the figure, for the washing device described in this embodiment, the ratio range of the height difference H1 between the water outlet 31 and the upper edge of the side wall 21 of the water receiving tank to the height H of the side wall 21 of the water receiving tank is preferably: 0.1 ≤ H1 / H ≤ 0.9; or, 0.2 ≤ H1 / H ≤ 0.8; or, 0.25 ≤ H1 / H ≤ 0.75; or, 0.35 ≤ H1 / H ≤ 0.72; or, 0.4 ≤ H1 / H ≤ 0.7; or, 0.5 ≤ H1 / H ≤ 0.68; or, 0.55 ≤ H1 / H ≤ 0.65. When the ratio range of H1 to H is: 0.5 ≤ H1 / H ≤ 0.7, the requirements of reducing water splash and not affecting the drainage speed can be taken into account. The best is: 0.55 ≤ H1 / H ≤ 0.65. At this time, even if the water content in the load is relatively high and the dehydration speed is very high, since the water outlet 31 is at a relatively deep distance inside the water receiving tank 2 and there is also a sufficient distance between the water outlet 31 and the bottom wall 22 of the water receiving tank, it is very difficult for the water discharged from the water outlet 31 to splash outside the water receiving tank 2, and at the same time, it is also very difficult for the stored water in the water receiving tank 2 to exceed the position of the water outlet 31, which can avoid the situation where the rotation of the washing tub 1 drives the water guiding channel 3 to stir the stored water in the water receiving tank 2 to the outside, and also avoids the influence of the stored water on the water discharge speed of the water outlet 31.

[0086] Embodiment Six

[0087] As Figure 6 shown in the figure, the bottom of the water receiving tank 2 in this embodiment is provided with a sunken annular groove 4, and the water discharged from the water outlet 31 falls into the annular groove 4, and a drain port (not shown in the figure) is provided at the lowest point of the annular groove 4.

[0088] Furthermore, the water outlet 31 is above or level with the upper opening of the annular groove 4, and the height difference between the water outlet 31 and the upper opening of the annular groove 4 is H2; the value range of the ratio of H2 to H is: 0 ≤ H2 / H ≤ 0.8, or: 0.01 ≤ H2 / H ≤ 0.45, or: 0.02 ≤ H2 / H ≤ 0.25, or: 0.05 ≤ H2 / H ≤ 0.1. This structure can better improve the water discharge speed of the water outlet and also avoid the problem of the water guiding channel stirring the stored water and splashing due to the stored water in the water receiving tank exceeding the water outlet.

[0089] Embodiment Seven

[0090] As Figure 7 shown in the figure, the difference between this embodiment and Embodiment Six is that: the water outlet 31 extends into the annular groove 4 or is level with the opening, and the height difference between the upper opening of the annular groove 4 and the water outlet 31 is H3; the value range of the ratio of H3 to H is: 0 ≤ H3 / H ≤ 0.5, or: 0.01 ≤ H3 / H ≤ 0.45, or: 0.02 ≤ H3 / H ≤ 0.25, or: 0.02 ≤ H3 / H ≤ 0.1.

[0091] Since the water outlet is far from the upper edge of the circumferential wall of the water receiving tank, the probability of water splashing outside the water receiving tank during water discharge can be reduced.

[0092] Embodiment Eight

[0093] As Figure 8 shown, in this embodiment, the structure of the annular groove 4 is further improved. The annular groove 4 is located at the outer peripheral edge of the bottom wall 22 of the water receiving tank and surrounds the circumference of the water receiving tank 2. The outer peripheral side wall of the annular groove 4 is a part of the circumferential side wall 21 of the water receiving tank. Due to the influence of the centrifugal force of the rotation of the washing tub, the water discharged from the water outlet 31 falls directly into the annular groove 4, and the drainage speed of the water receiving tank can be accelerated through the drain port provided at the lowest part of the annular groove 4, avoiding the risk of water overflow in the water receiving tank. Further, the depth of the annular groove 4 is H4, and the value range of the ratio of H4 to H is: 0.01 ≤ H4 / H ≤ 0.75, or: 0.1 ≤ H4 / H ≤ 0.6, or: 0.2 ≤ H4 / H ≤ 0.5, or: 0.3 ≤ H4 / H ≤ 0.4. The smaller the ratio of H4 to H, the smaller the depth of the annular groove, although the water storage capacity is low, but the space range for installing the driving device at the bottom of the water receiving tank is larger, the installation limitation is smaller, and the processing of the water receiving tank is relatively easy; the larger the ratio of H4 to H, the larger the depth of the annular groove, the smaller the risk of water splashing, which is beneficial to drainage, and the water receiving tank has high strength, but the processing is more difficult.

[0094] Further, the upper edge of the inner peripheral side wall of the annular groove 4 and the bottom wall 22 of the water receiving tank are chamfered and transitioned, and the bottom wall 22 of the water receiving tank is inclined and gradually lowered in the radial direction from the center to the annular groove 4. This structure is beneficial to the water in the water receiving tank flowing into the annular groove, accelerating the drainage speed of the water receiving tank, and is also beneficial to the processing and demolding of the water receiving tank.

[0095] Furthermore, as Figure 9 shown, the radial width of the upper opening of the annular groove 4 is r, and the radius of the water receiving tank 2 is R. The value range of the ratio of r to R is: 0.1 ≤ r / R ≤ 0.5, or: 0.12 ≤ r / R ≤ 0.35, or: 0.15 ≤ r / R ≤ 0.25. The structure of this annular groove is beneficial to water storage, avoiding the risks of water overflow and splashing in the water receiving tank, and is also beneficial to the processing of the water receiving tank.

[0096] Furthermore, the depth of the annular groove in the vertical direction is arranged to transition from high to low in a clockwise or counterclockwise direction to form a structure for accelerating drainage (not shown in the figure). Preferably, the depth of the annular groove varies from high to low in the same direction as the rotation direction of the washing tub during dehydration. The bottom of the annular groove has a spiral structure or a stepped structure that slopes from high to low, and the drain outlet of the water receiving trough is located at the lowest water level position of the spiral structure or the stepped structure. In this way, the drainage can be completely drained, avoiding the retention of water in the water receiving trough and the annular groove.

[0097] The above are only the preferred embodiments of the present invention, and do not impose any formal limitations 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 scope of the technical solution of the present invention, can make some modifications or variations equivalent to the equivalent embodiments by using the technical content prompted above. 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.

Claims

1. A washing tub, which is a rotatable water bucket, and a water guiding channel for draining water from top to bottom is provided on the outer peripheral wall of the washing tub, characterized in that: The water guiding channel is arranged outside the washing tub, with its upper end communicating with the inside of the washing tub and its lower end having a water outlet. The water guiding channel includes at least one inclined channel, and the side wall of the inclined channel on the side away from the washing tub is inclined downward from top to bottom gradually towards the direction close to the central axis of the washing tub; The water guiding channel includes a first channel, a second channel and a third channel. The first channel is provided with the water inlet of the water guiding channel and communicates with the inside of the washing tub. The second channel is arranged below the first channel and is the inclined channel; The side wall of the first channel on the side away from the washing tub is inclined downward from top to bottom gradually towards the direction close to the central axis of the washing tub, and the inclination angle of the side wall of the first channel on the side away from the washing tub is smaller than the inclination angle of the side wall of the second channel on the side away from the washing tub; The third channel is arranged at the lowermost end of the water guiding channel and has the water outlet of the water guiding channel. The third channel extends downward along the outer peripheral wall of the washing tub, and the water outlet is lower than the lower end surface of the bottom wall of the washing tub.

2. The washing tub according to claim 1, wherein: The side wall of the first channel on the side away from the washing tub is inclined downward from top to bottom gradually towards the direction away from the peripheral wall of the washing tub connected to the first channel.

3. The washing tub according to claim 1, characterized in that: The third channel is parallel to the direction of the central axis of the washing tub from top to bottom.

4. The washing tub according to claim 1, wherein: The side wall of the third channel on the side away from the washing tub is inclined downward from top to bottom gradually towards the direction close to the central axis of the washing tub.

5. The washing tub according to claim 4, characterized in that: The inclination angle of the side wall of the third channel on the side away from the washing tub is smaller than the inclination angle of the side wall of the second channel on the side away from the washing tub.

6. A washing device, characterized in that: There is a washing tub as described in any one of claims 1-5.

7. The washing device according to claim 6, characterized in that: It further includes a water receiving tank arranged below the washing tub for collecting the washing water discharged from the washing tub. The upper edge of the side peripheral wall of the water receiving tank extends upward and is higher than the position where the lower water outlet of the water guiding channel is located.

8. The washing device according to claim 7, characterized in that: The height difference between the water outlet and the upper edge of the side peripheral wall of the water receiving tank is H1; the height of the side peripheral wall of the water receiving tank is H; the value range of the ratio of H1 to H is: 0.02 ≤ H1 / H ≤ 0.98.

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