Outer drum cover and impeller washing machine

Abstract

The application relates to a drum cover and a pulsator washing machine, which comprises a cover body in the shape of a ring, a plurality of water collecting cavities are uniformly arranged on the lower side of the cover body, a flow guide rib is arranged on the output side of the water collecting cavities; the cross-sectional area of the water collecting cavities gradually increases from the middle to the two ends; air suction micropores are arranged on the cover body and are in one-to-one correspondence with the middle parts of the water collecting cavities; the cross-sectional area of the water collecting cavities gradually increases from the middle to the two ends, a negative pressure is generated through the area change of the flow channel, and air is sucked into the water through the air suction micropores to generate micro-bubble water. The flow guide rib of the drum cover is used for rapidly flushing the bubble water flow output by the water collecting cavities into the inner cylinder of the washing machine to wash the clothes, improve the dissolving efficiency and dissolving rate of the detergent, reduce the winding, and improve the washing ratio.

Description

Technical Field

[0001] This invention relates to the field of washing machine technology, specifically to an outer tub lid and a pulsator washing machine. Background Technology

[0002] A top-loading washing machine has a disc-shaped impeller at the bottom of the tub with protruding ribs. The impeller's rotation in both directions creates vortices in the water, sometimes clockwise and sometimes counterclockwise, causing the clothes to rotate and tumble continuously. This creates gentle friction between the clothes and between the clothes and the tub walls, achieving cleaning and stain removal with the help of detergent.

[0003] Top-loading washing machines tend to cause clothes to tangle during washing, and detergent is difficult to dissolve. The difficulty in quickly and thoroughly dissolving detergent for it to work effectively results in a lower washing efficiency.

[0004] In existing technologies, microbubbles are generated by adding components such as bubble generators and jet injectors to washing machines to improve detergent dissolution efficiency and rate. However, this method requires the additional installation of bubble generating components adapted to different washing machine models, resulting in poor versatility, high costs, and inconvenient maintenance. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned shortcomings by providing an outer tub cover and a pulsator washing machine that can guide water flow to mix with microbubbles, allowing the microbubble-containing water flow to rinse clothes under the action of centrifugal force, thereby improving the detergent dissolution efficiency and dissolution rate, and reducing tangling.

[0006] The first technical solution adopted by the present invention to solve the technical problem is an outer barrel cover, including a ring-shaped cover body, wherein a plurality of water collection cavities are evenly distributed on the lower side of the cover body, and the output side of the water collection cavity is provided with guide ribs.

[0007] The cross-sectional area of ​​the water collection cavity gradually increases from the middle to both ends;

[0008] The cover is provided with air-absorbing micro-holes, which are connected to the middle of the water collection cavity, and the air-absorbing micro-holes are arranged in a one-to-one correspondence with the water collection cavity.

[0009] Furthermore, the cross-sectional area of ​​the inlet of the water collection cavity is not less than 6 times the cross-sectional area of ​​the middle of the water collection cavity.

[0010] Furthermore, the cross-sectional area of ​​the inlet of the water collection cavity is larger than the cross-sectional area of ​​the outlet of the water collection cavity.

[0011] Furthermore, several cover plates are evenly distributed around the lower side of the cover, and a water collection cavity is formed between the upper side of the cover plate and the cover.

[0012] Furthermore, the cross-section of the cover plate in the width direction is an arc shape with the notch facing upwards, and the cross-section of the cover plate in the length direction is an arc shape with the notch facing downwards.

[0013] Furthermore, the inner side of the cover plate is an arc-shaped edge that is recessed from the middle towards the outer end of the cover.

[0014] Furthermore, the guide rib is an arc-shaped guide rib, with the water inlet end of the guide rib connected to the outer end of the water collection cavity's outlet, and the water outlet end of the guide rib extending to the inner end of the cover.

[0015] Furthermore, the water outlet end of the guide rib forms an angle between the tangential direction and the center direction of the cover, and the angle is 30-50 degrees.

[0016] Furthermore, the cover includes a flow guide cover and a connecting ring arranged sequentially from top to bottom. The flow guide cover is annular, and the outer end of the flow guide cover is connected to the upper end of the connecting ring. The water collection cavity and the flow guide rib are both arranged on the lower side of the flow guide cover.

[0017] The second technical solution adopted by the present invention to solve the technical problem is to provide a pulsator washing machine, including the aforementioned outer tub cover.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] With a simple structure and reasonable design, it does not require additional bubble generating equipment, has low cost, and integrates the functions of guiding flow and generating micro-air on the outer barrel lid. It is highly versatile and easy to maintain.

[0020] The cross-sectional area of ​​the water collection chamber gradually increases from the middle to both ends. The change in the area of ​​the flow channel generates negative pressure, which, together with the air intake micropores, allows air to enter and produces microbubble water.

[0021] The guide ribs are used to quickly flush the bubble water flow from the water collection chamber into the inner drum of the washing machine, rinse the clothes, improve the detergent dissolution efficiency and dissolution rate, reduce tangling, and improve the washing ratio. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 This refers to the top surface structure of the outer barrel lid.

[0024] Figure 2 This refers to the bottom structure of the outer barrel lid.

[0025] Figure 3 for Figure 2 AA cross-section view.

[0026] Figure 4 for Figure 2BB cross-section.

[0027] Figure 5 for Figure 4 Enlarged view of part C.

[0028] Figure 6 This is a diagram showing the outer tub cover installed on the washing machine in use.

[0029] Figure 7 This is a schematic diagram showing the angle formed between the water outlet end in the tangential direction and the center direction of the cover.

[0030] In the picture:

[0031] 1-Cover; 2-Suction micropore; 3-Cover plate; 4-Guide rib; 5-Guide cover; 6-Connecting ring; 7-Water collection chamber; 8-Outer barrel; 9-Inner cylinder; a-Angle.

[0032] Board. Detailed implementation method.

[0033] Preferred embodiments of the invention are described in more detail below; however, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the invention more thorough and complete, and to fully convey the scope of the invention to those skilled in the art. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the invention.

[0034] Top-loading washing machines tend to cause clothes to tangle during washing, and detergent is difficult to dissolve. The difficulty in quickly and thoroughly dissolving detergent for it to work effectively results in a lower washing efficiency.

[0035] In existing technologies, microbubbles are generated by adding components such as bubble generators and jet injectors to washing machines to improve detergent dissolution efficiency and rate. However, this method requires the additional installation of bubble generating components adapted to different washing machine models, resulting in poor versatility, high costs, and inconvenient maintenance.

[0036] Example 1:

[0037] To address the aforementioned issues, Example 1 provides an outer tub lid that guides water flow to mix with microbubbles, allowing the microbubble-containing water flow to rinse clothes under centrifugal force, thereby improving detergent dissolution efficiency and solubility, and reducing tangling.

[0038] like Figures 1-6 As shown, an outer tub cover includes a ring-shaped cover body 1. Several water collection chambers 7 are evenly distributed around the lower side of the cover body 1. A guide rib 4 is provided on the output side of the water collection chamber 7. The guide rib 4 is used to quickly guide the bubble water flow output from the water collection chamber 7 into the inner tub 9 of the washing machine.

[0039] The cover 1 is provided with a suction microhole 2, which is connected to the middle of the water collection cavity 7. The suction microhole 2 and the water collection cavity 7 are arranged in a one-to-one correspondence.

[0040] The cross-sectional area of ​​the water collection chamber 7 gradually increases from the middle to both ends. The water collection chamber 7 is used to generate negative pressure through the change in the area of ​​the flow channel, and together with the air intake micropore 2, it allows air to enter and generate microbubble water.

[0041] In practical applications, at least three water collection chambers 7 should be provided to ensure the washing effect.

[0042] In this embodiment, the guide rib 4 is a plastic part, and the guide rib 4 is integrally injection molded or welded with the cover body 1.

[0043] In this embodiment, the cover plate 3 is a plastic part, and the cover plate 3 and the cover body 1 are integrally injection molded or welded.

[0044] In practical applications, a cavity is formed between the outer tub 8 and the inner tub 9 of the washing machine. The outer tub cover is located at the upper end of the cavity and is higher than the inner tub 9. The lower side of the outer end of the outer tub cover needs to be sealed to the outer tub 8 to avoid water leakage.

[0045] When the washing machine enters the centrifugal wash program, the inner drum 9 rotates at high speed. The water in the cavity between the inner drum 9 and the outer drum 8 enters the outer drum cover under the action of centrifugal force. Some water enters the water collection cavity 7 through the inlet, filling the cavity. As the water flows from the inlet to the middle, the flow area gradually decreases, creating negative pressure in the cavity. At this time, the air intake micro-holes 2 on the outer drum cover draw in external gas into the water collection cavity 7, which mixes with the water in the cavity to form microbubble water. This balances the pressure in the cavity. When the water reaches the outlet of the water collection cavity 7, it has already mixed with some gas to form a centrifugal water flow containing microbubbles. The water then sprays into the inner drum 9 along the tangential direction of the guide ribs 4. The centrifugal water flow containing microbubbles is used to rinse clothes, thereby reducing tangling, improving detergent dissolution efficiency and dissolution rate, and increasing the washing ratio.

[0046] The cross-sectional area of ​​the water collection chamber 7 in this outer tub cover gradually increases from the middle to both ends. This change in flow channel area creates negative pressure, which, combined with the air intake micro-holes 2, allows air to enter and generate microbubbles in the water. The guide ribs 4 of this outer tub cover are used to quickly flush the bubbly water output from the water collection chamber 7 into the inner drum 9 of the washing machine, rinsing clothes, improving detergent dissolution efficiency and rate, reducing tangling, and increasing the washing ratio. Through the above design, this outer tub cover features a simple and reasonable structure, eliminates the need for additional bubble generating equipment, is low-cost, integrates the functions of guiding flow and generating microbubbles into the outer tub cover, and is highly versatile and easy to maintain.

[0047] Example 2:

[0048] like Figures 2-5 As shown, in Example 2, based on Example 1, the structure of the water collection chamber 7 is further designed to facilitate the generation of negative pressure through the change in the area of ​​the flow channel, which, together with the air intake micropore 2, allows air to enter and generate microbubble water.

[0049] In this embodiment, the cross-sectional area of ​​the inlet of the water collecting cavity 7 is not less than 6 times the cross-sectional area of ​​the middle part of the water collecting cavity 7, and the cross-sectional area of ​​the inlet of the water collecting cavity 7 is greater than the cross-sectional area of ​​the outlet of the water collecting cavity 7, so that negative pressure is generated in the water collecting cavity 7 when water flows through it.

[0050] In this embodiment, several cover plates 3 are evenly distributed around the lower side of the cover 1, and a water collection cavity 7 is formed between the upper side of the cover plate 3 and the cover 1.

[0051] In this embodiment, in order to make the cross-sectional area of ​​the water collection cavity 7 gradually increase from the middle to both ends, the cross-section of the cover plate 3 in the width direction is an arc shape with the notch facing upward, and the cross-section of the cover plate 3 in the length direction is an arc shape with the notch facing downward.

[0052] In this embodiment, to ensure that the cross-sectional area of ​​the water collection cavity 7 gradually increases from the middle to both ends, the inner side of the cover plate 3 is an arc-shaped edge that is concave from the middle to the outer end of the cover body 1. In practical applications, to further improve the rate of change of the cross-section of the water collection cavity 7 from the end to the middle, the outer side of the cover plate 3 can be correspondingly set as an arc-shaped edge that is concave from the middle to the inner end of the cover body 1.

[0053] Example 3:

[0054] like Figures 2-5 As shown, in Example 3, based on the above examples, the structure of the guide rib 4 is further designed to facilitate the rapid introduction of the bubble water flow output from the water collection chamber 7 into the inner drum 9 of the washing machine.

[0055] In this embodiment, the guide rib 4 is an arc-shaped guide rib 4. The water inlet end of the guide rib 4 is connected to the outer end of the output port of the water collecting chamber 7, and the water outlet end of the guide rib 4 extends to the inner end of the cover 1. The side of the guide rib 4 facing the output port of the water collecting chamber 7 is an arc-shaped guide surface, with the water inlet end located at the input end of the guide surface and the water outlet end located at the output end of the guide surface. In use, the bubble water output from the water collecting chamber 7 is guided by the guide surface and finally sprayed into the inner drum 9 of the washing machine along the tangential direction of the guide rib.

[0056] In this embodiment, as Figure 7The water outlet end of the guide rib 4 forms an angle α between its tangential direction and the center direction of the cover 1. The center direction of the cover 1 is radial, i.e., the line connecting the water outlet end and the center of the cover 1. If the angle α is too large, the water will fall around the perimeter of the inner tube 9, failing to effectively disperse the clothes. If the angle α is too small, the guide rib 4 will exert too much resistance to the water flow, preventing the water from smoothly entering the inner tube 9, resulting in poor dispersing of clothes and an unpleasant appearance of the water outlet. Therefore, setting the angle to 30-50 degrees is the preferred solution.

[0057] In this embodiment, the cover 1 includes a flow guide cover 5 and a connecting ring 6 arranged sequentially from top to bottom. The flow guide cover 5 is annular and is used for flow guidance. The outer end of the flow guide cover 5 is connected to the upper end of the connecting ring 6. The connecting ring 6 is used to connect the outer barrel 8. The water collection cavity 7 and the flow guide rib 4 are both arranged on the lower side of the flow guide cover 5 for flow guidance.

[0058] In this embodiment, to facilitate water inflow and outflow, the lowest ends of the water collection cavity 7 are located between the upper and lower sides of the connecting ring 6.

[0059] In this embodiment, in order to facilitate airflow, the lower side of the airflow guide cover 5 is arc-shaped, and the height of the arc-shaped surface gradually decreases from the middle to both ends. The air intake micro-holes 2 are opened at the top of the arc-shaped surface.

[0060] Example 4

[0061] like Figures 1-6 As shown, in embodiment 4, based on the above embodiments, a pulsator washing machine is provided, which includes the outer tub cover of the above embodiments.

[0062] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this application. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters denote similar items; therefore, once an item is defined, it need not be discussed further thereafter.

[0063] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0064] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," and "above" may be used here to describe the spatial positional relationship of the features. It should be understood that spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described.

[0065] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0066] If this application discloses or relates to components or structural parts that are fixedly connected to each other, then, unless otherwise stated, a fixed connection can be understood as: a fixed connection that can be disassembled (e.g., a connection using bolts or screws), or a fixed connection that cannot be disassembled (e.g., riveting, welding). Of course, a fixed connection can also be replaced by an integral structure (e.g., manufactured in one piece using a casting process) (except where it is obviously impossible to use an integral molding process).

[0067] The above-described preferred embodiments further illustrate the purpose, technical solutions, and advantages of the present invention. It should be understood that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An outer barrel lid, comprising a ring-shaped lid body, characterized in that: The cover has several water collection cavities evenly distributed around its lower side, and the output side of each water collection cavity is provided with a guide rib. The cross-sectional area of ​​the water collection cavity gradually increases from the middle to both ends; The cover is provided with air-absorbing micro-holes, which are connected to the middle of the water collection cavity, and the air-absorbing micro-holes are arranged in a one-to-one correspondence with the water collection cavity.

2. The outer barrel lid according to claim 1, characterized in that: The cross-sectional area of ​​the inlet of the water collection cavity is not less than 6 times the cross-sectional area of ​​the middle of the water collection cavity.

3. The outer barrel lid according to claim 2, characterized in that: The cross-sectional area of ​​the inlet of the water collection chamber is larger than the cross-sectional area of ​​the outlet of the water collection chamber.

4. The outer barrel lid according to claim 3, characterized in that: Several cover plates are evenly distributed around the lower side of the cover, and a water collection cavity is formed between the upper side of the cover plate and the cover.

5. The outer barrel lid according to claim 4, characterized in that: The cross-section of the cover plate in the width direction is an arc shape with the notch facing upwards, and the cross-section of the cover plate in the length direction is an arc shape with the notch facing downwards.

6. The outer barrel lid according to claim 4, characterized in that: The inner edge of the cover plate is a rounded edge that is recessed from the middle towards the outer end of the cover.

7. The outer barrel lid according to claim 6, characterized in that: The guide rib is an arc-shaped guide rib. The water inlet end of the guide rib is connected to the outer end of the outlet of the water collection cavity, and the water outlet end of the guide rib extends to the inner end of the cover.

8. The outer barrel lid according to claim 7, characterized in that: The outlet end of the guide rib forms an angle between the tangential direction and the center direction of the cover, and the angle is 30-50 degrees.

9. The outer barrel cover according to claim 1, characterized in that: The cover includes a flow guide cover and a connecting ring, arranged sequentially from top to bottom. The flow guide cover is annular, and the outer end of the flow guide cover is connected to the upper end of the connecting ring. The water collection cavity and the flow guide rib are both arranged on the lower side of the flow guide cover.

10. A pulsator washing machine, characterized in that: Includes the outer barrel cover as described in any one of claims 1-9.

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