Bubbling water channel structure of pulsator washing machine and pulsator washing machine

Abstract

The bubbling water channel structure comprises a shell, a water flow channel and an air channel, the shell is used for being arranged on the side wall of an inner barrel of the pulsator washing machine, the water flow channel and the air channel are formed in the shell, a water inlet opening is formed in the bottom end of the water flow channel, and a water outlet opening is formed in the top end of the water flow channel. The water flow channel comprises a contraction channel, a throat channel and a diffusion channel which form a Venturi structure; the air channel is communicated with the side wall of the throat channel through a plurality of small air inlet holes; the water flow channel is configured to enable water flow entering the water inlet opening from the inner barrel to return to the inner barrel through the water outlet opening under the action of centrifugal force, and the throat channel can suck air in the air channel into the water flow through the multiple small air inlet holes under the action of negative pressure and generate tiny bubbles; in the washing process of the pulsator washing machine, water flow can continuously enter the water flow channel and generate tiny bubbles, the tiny bubbles exist for a longer time, and therefore the cleaning effect is better.

Description

Technical Field

[0001] This invention belongs to the field of washing machine technology, specifically, it relates to an aeration channel structure for a pulsator washing machine and the pulsator washing machine itself. Background Technology

[0002] Washing clothes in a washing machine typically requires adding detergent and washing powder to enhance cleaning power, and multiple rinses are needed to reduce detergent residue on clothes, which does not meet environmental protection requirements. A new type of washing machine integrates a microbubble generator into the water inlet pipe. This device generates tiny bubbles in the water flow; these bubbles burst and can peel away stains from clothes, achieving a cleaning effect. This cleaning method is more environmentally friendly. However, this solution only generates tiny bubbles during the water intake process, and the duration of these bubbles is short, limiting their cleaning effect on clothes and making it difficult to meet the need for thorough washing. Summary of the Invention

[0003] To address the aforementioned technical problems in the prior art, this invention provides an aeration channel structure for a pulsator washing machine and a pulsator washing machine, which can continuously generate microbubbles by agitating the pulsator during the washing process, thereby improving the cleaning effect on clothes.

[0004] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: According to a first aspect of the present invention, a foaming water channel structure for a pulsator washing machine is provided, comprising: A housing, which is used to be installed on the side wall of the inner tub of a pulsator washing machine; A water flow channel is formed inside the shell. The bottom end of the water flow channel forms an inlet opening and the top end forms an outlet opening. The water flow channel includes a constriction channel, a throat channel, and a diffusion channel that are arranged sequentially from the inlet opening to the outlet opening and form a Venturi structure. An air passage is formed within the housing and is separated from the water flow passage. The air passage is connected to the sidewall of the throat passage through a plurality of small air inlet holes. The water flow channel is configured such that water flowing from the inner tub into the inlet opening under centrifugal force returns to the inner tub through the outlet opening; the throat channel is capable of drawing air from the air channel into the water flow through multiple air inlet holes under negative pressure and generating microbubbles.

[0005] In some embodiments of the invention, the top of the housing forms an air inlet for air intake into the air passage, which extends along the constriction passage to the throat passage.

[0006] In some embodiments of the present invention, the air inlet is positioned at a higher height than the water outlet.

[0007] In some embodiments of the present invention, two air channels are provided, and are respectively located on opposite sides of the water flow channel, and both air channels are connected to the air inlet.

[0008] In some embodiments of the invention, the air passage forms an enlarged air cavity outside the sidewall of the throat passage.

[0009] In some embodiments of the present invention, the contraction channel is configured to contract from the water inlet opening to the throat channel, and / or the connection between the diffusion channel and the throat channel forms a flared structure.

[0010] In some embodiments of the present invention, the water outlet is provided with a first guide portion for introducing water flow into the inner barrel.

[0011] In some embodiments of the present invention, the housing is provided with a second guide portion for guiding water flow into the water inlet opening, the second guide portion being located in the middle of the water inlet opening and extending out of the water inlet opening at the bottom.

[0012] In some embodiments of the present invention, the extension direction of the water flow channel from the water inlet to the water outlet is relatively parallel or relatively inclined to the axial direction of the inner barrel.

[0013] According to a second aspect of the present invention, a pulsator washing machine is also provided, including the foaming water channel structure of the pulsator washing machine described above.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are: By incorporating an aeration channel structure on the inner tub of the pulsator washing machine, and by setting up water flow channels and air channels within the casing, the rotating water flow in the inner tub, under the action of centrifugal force, enters the water flow channel through the water inlet opening. From bottom to top, it passes through the contraction channel, throat channel, and diffusion channel before returning to the inner tub through the water outlet opening. Multiple small air inlets located between the throat channel and the air channel allow the throat channel to draw air from the air channel into the water flow under negative pressure, generating microbubbles for cleaning clothes. During the washing process, the pulsator continuously rotates, ensuring a continuous flow of water into the water flow channel and generating microbubbles. These microbubbles persist for a longer period during the washing process, continuously removing stains from clothes and resulting in better cleaning. This achieves the goal of thoroughly cleaning clothes.

[0015] Other features and advantages of the present invention will become clearer after reading the detailed embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of an embodiment of the foaming water channel structure of the pulsator washing machine proposed in this invention; Figure 2 yes Figure 1 Front view of the foaming channel structure; Figure 3 yes Figure 1 A schematic diagram of the internal structure of the central foaming channel; Figure 4 This is a schematic diagram of the internal structure of a second embodiment of the foaming water channel structure of the pulsator washing machine proposed in this invention; Figure 5 This is one of the structural schematic diagrams of Embodiment 3 of the foaming water channel structure of the pulsator washing machine proposed in this invention; Figure 6 This is the second schematic diagram of the third embodiment of the foaming water channel structure of the pulsator washing machine proposed in this invention.

[0018] The reference numerals and their corresponding component names in the figure are as follows: 10. Inner tub; 20. Shell; 201. Outer frame; 202. Inner frame; 203. First airflow guide; 204. Second airflow guide; 2041, First guide surface; 2042, Second guide surface; 21. Water flow channel; 211. Water inlet opening; 212. Contraction channel; 213. Throat channel; 214. Diffusion channel; 215. Water outlet opening; 216. Air inlet hole; 22. Air passage; 221. Air inlet; 222. Air chamber; 30. Impeller. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and 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. Therefore, they should not be construed as limitations on this invention.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. In the description of embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0023] In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Unless otherwise stated, numerical ranges herein include not only the entire range within its two endpoints, but also several subranges contained therein.

[0024] Wherever possible, the various aspects and features described and illustrated in this specification may be applied individually, and these individual aspects may serve as the subject matter of a divisional application.

[0025] Figures 1 to 3 This illustration shows an embodiment of the foaming channel structure of a pulsator washing machine provided by the present invention. In this embodiment, the foaming channel structure includes: a shell 20, a water flow channel 21, and an air channel 22.

[0026] The housing 20 is used to be installed on the side wall of the inner tub 10 of the pulsator washing machine.

[0027] A water flow channel 21 is formed inside the shell 20. The bottom end of the water flow channel 21 forms an inlet opening 211 and the top end forms an outlet opening 215. The water flow channel 21 includes a constriction channel 212, a throat channel 213, and a diffusion channel 214, which are arranged sequentially from the inlet opening 211 to the outlet opening 215 and form a Venturi structure.

[0028] An air passage 22 is formed within the housing 20 and is separated from the water flow passage 21. The air passage 22 is connected to the sidewall of the throat passage 213 through a plurality of air inlet holes 216.

[0029] The water flow channel 21 is configured such that the water flow entering the water inlet 211 from the inner tub 10 under the action of centrifugal force returns to the inner tub 10 through the water outlet 215; the throat channel 213 is able to draw air from the air channel 22 into the water flow through multiple air inlet holes 216 under the action of negative pressure and generate tiny bubbles.

[0030] The inner tub 10 of the pulsator washing machine has a pulsator 30 at its bottom, and the pulsator 30 has water-dispersing ribs. When the pulsator washing machine is working, the pulsator 30 rotates in both directions, agitating the water flow. Under the action of centrifugal force, the water flow rotates to the left or right in the inner tub 10. The pulsator 30 can throw the water flow into the water inlet 211.

[0031] The rotating water flow enters the water flow channel 21 through the inlet opening 211, passes through the contraction channel 212, the throat channel 213 and the diffusion channel 214 in sequence, and then leaves through the outlet opening 215, forming a waterfall flow carrying tiny bubbles, and flows back into the inner barrel 10.

[0032] The cross-sectional area of ​​the throat channel 213 is smaller than that of the contraction channel 212 and the diffusion channel 214. The throat channel 213 is the narrowest part of the water flow channel 21. According to the Venturi principle, the flow velocity of the water increases and the pressure decreases when it passes through the throat channel 213, generating a certain negative pressure. Under the action of negative pressure, air in the air channel 22 can be drawn into the water flow through the air inlet hole 216.

[0033] The air inlet 216 is configured to generate tiny bubbles in the water flow from the passing air. The diameter of the air inlet 216 can be set to no more than 2 mm. For example, the air inlet 216 can be set to 0.2 mm, 0.5 mm, 1.2 mm, or 1.5 mm.

[0034] The water flow in the throat channel 213 carries microbubbles into the diffusion channel 214, and then returns to the inner tub 10 through the water outlet 215, cleaning the clothes in the inner tub 10. When the microbubbles burst, they can remove stains from the clothes, thereby cleaning them.

[0035] During the washing process, the pulsator 30 continuously rotates, spurring water from the inner tub 10 into the water flow channel 21, thereby continuously generating microbubbles in the water flow. These microbubbles persist for a longer period during the washing process, effectively removing stains from clothes and resulting in better cleaning. Furthermore, compared to adding detergent or washing powder to the washing machine, cleaning clothes through microbubbles is more economical and environmentally friendly.

[0036] The shell 20 can be a one-piece structure or it can be assembled from multiple parts. The shell 20 can be installed on the side wall of the inner tub 10 in a detachable or non-detachable manner. The water flow channel 21 can be completely located inside the shell 20, or the water flow channel 21 can be formed by the inner wall of the shell 20 and the inner wall of the inner tub 10.

[0037] In one embodiment, the housing 20 is fixedly connected to the side wall of the inner tub 10 by fasteners or snaps, and can be installed and removed, allowing the housing 20 to be disassembled for cleaning.

[0038] In one embodiment, the shell 20 is an integral structure, and the shell 20 is fastened to the inner wall of the inner barrel 10. The inner wall of the shell 20 and the inner wall of the inner barrel 10 form a water flow channel 21, which helps to reduce assembly steps.

[0039] like Figure 3 In the specific embodiment shown, the water inlet 211 faces downwards, near the bottom of the inner tub 10, and the water inlet 211 faces upwards, near the top of the inner tub 10. Specifically, the water inlet 211 is located at the bottom of the housing 20, and the water outlet 215 is located at the top of the housing 20. The inlet of the air passage 22 is also located at the top of the housing 20, reducing the possibility of water flowing into the air passage 22.

[0040] Specifically, the water flow channel 21 extends from the inlet opening 211 to the outlet opening 215 in a direction parallel to the axis of the inner tub 10, meaning the water flow channel 21 extends vertically. The water-dispelling ribs on the impeller 30 are raised structures, which can generate a certain upward force on the water flow when the impeller 30 rotates, and can throw the water flow upward to a certain extent. Therefore, when the water flows in the inner tub 10, some of the water flow can be thrown into the inlet opening 211 and flow upward along the water flow channel 21.

[0041] In one embodiment, the water inlet opening 211 is configured to extend inward toward the interior of the inner tank 10 to increase the water intake.

[0042] In some embodiments, the housing 20 includes an outer frame 201 and an inner frame 202. The inner frame 202 is connected to the inside of the outer frame 201, and a water flow channel 21 is formed inside the inner frame 202. The gap between the outer frame 201 and the inner frame 202 forms an air channel 22. The water flow channel 21 and the air channel 22 are separated by the inner frame 202, and multiple air inlet holes 216 are provided on the inner frame 202. The outer frame 201 and the inner frame 202 can be an integral structure or a structure fixedly connected by fasteners or clips. Structural ribs can be provided between the outer frame 201 and the inner frame 202 to strengthen the structural strength and ensure the quality of use. The overall structure of the housing 20 is simple and lightweight, which helps to reduce the cost of processing and manufacturing.

[0043] Increasing the number of air inlet holes 216 can increase the amount of microbubbles generated, thereby improving the cleaning effect. A filter screen can be installed between the air channel 22 and the throat channel 213, and the air inlet holes 216 are the mesh openings on the filter screen, which can generate a large number of microbubbles in the water flow. The filter screen can be designed to be detachable.

[0044] In some embodiments, the top of the housing 20 forms an air inlet 221 for air to enter the air passage 22, which extends along the diffusion passage 214 to the throat passage 213. The air inlet 221, located at the top of the housing 20, reduces the amount of water from the inner tank 10 entering the air passage 22.

[0045] Furthermore, the air inlet 221 is positioned at a higher height than the water outlet 215, so that the water discharged from the water outlet 215 is less likely to enter the air inlet 221.

[0046] In some embodiments, two air channels 22 are provided, located on opposite sides of the water flow channel 21. Air inlet holes 216 corresponding to the two air channels 22 are respectively provided on opposite sides of the throat channel 213. The two air channels 22 simultaneously supply air to the throat channel 213, further increasing the number of microbubbles and improving cleaning efficiency. When one air inlet hole 216 of the throat channel 213 becomes blocked by debris such as lint in the water flow, the air inlet hole 216 on the other side can continue to function.

[0047] Furthermore, both air channels 22 can be connected to the air inlet 221, through which air enters the two air channels 22. The two air channels 22 can be symmetrically arranged on opposite sides of the water flow channel 21.

[0048] In some embodiments, the housing 20 also includes a removable cover (not shown), which, when opened, exposes the water flow channel 21 and the air channel 22 to facilitate cleaning of the interior of the housing 20.

[0049] In some embodiments, the air passage 22 forms an enlarged air cavity 222 outside the sidewall of the throat passage 213. Since the throat passage 213 is the narrowest point of the water flow passage 21, the space between the sidewall of the throat passage 213 and the outer frame 201 is larger, naturally allowing for the formation of the enlarged air cavity 222, resulting in a compact and rational structure for the housing 20. The air cavity 222 can hold more air, which helps increase the air intake of the throat passage 213, thereby generating more microbubbles.

[0050] In some embodiments, the contraction channel 212 is configured to contract from the inlet opening 211 to the throat channel 213, with the inlet opening 211 being larger to allow more water to enter. The junction of the diffuser channel 214 and the throat channel 213 forms a flared structure, reducing the flow velocity of the water after it enters the diffuser channel 214 and preventing the water from being ejected upwards from the outlet opening 215.

[0051] In some embodiments, the water outlet 215 is provided with a first guide section 203 for introducing water flow into the inner tub 10. The first guide section 203 may be a slope extending from the bottom to the top into the interior of the inner tub 10, allowing the water flow to be guided towards the center of the inner tub 10. The air inlet 221 of the air passage 22 may be located above the first guide section 203 to prevent water flowing from the water outlet 215 from entering the air inlet 221.

[0052] Figure 4 This illustration shows a second embodiment of the foaming channel structure of a pulsator washing machine provided by the present invention. In this embodiment, the foaming channel structure includes a housing 20, a water flow channel 21, and an air channel 22.

[0053] The housing 20 is mounted on the side wall of the inner tub 10 of the pulsator washing machine. A water flow channel 21 is formed within the housing 20, with a water inlet 211 at the bottom and a water outlet 215 at the top. The water flow channel 21 includes a constriction channel 212, a throat channel 213, and a diffusion channel 214, arranged sequentially from the water inlet 211 to the water outlet 215 and forming a Venturi structure. An air channel 22 is formed within the housing 20 and is separated from the water flow channel 21. The air channel 22 communicates with the side wall of the throat channel 213 through multiple air inlet holes 216. The water flow channel 21 is configured such that water entering the water inlet 211 from the inner tub 10 under centrifugal force returns to the inner tub 10 through the water outlet 215; the throat channel 213 can draw air from the air channel 22 into the water flow through the multiple air inlet holes 216 under negative pressure, generating microbubbles.

[0054] The housing 20 is provided with a second guide section 204 for guiding water flow into the water inlet opening 211. The second guide section 204 is located in the middle of the water inlet opening 211 and extends out of the water inlet opening 211 at its bottom. When the rotating water flow in the inner tank 10 passes through the second guide section 204, it can enter the water inlet opening 211 under the guidance of the second guide section 204. The second guide section 204 increases the water intake of the water flow channel 21, which is conducive to generating more microbubbles, thereby improving the cleaning effect.

[0055] The inner tub 10 of the pulsator washing machine has a pulsator 30 at its bottom, and the pulsator 30 has water-dispersing ribs. When the pulsator washing machine is working, the pulsator 30 rotates in both directions, agitating the water flow. Under the action of centrifugal force, the water flow rotates to the left or right in the inner tub 10. The pulsator 30 can throw the water flow into the water inlet 211.

[0056] The rotating water flow enters the water flow channel 21 through the water inlet 211, passes through the contraction channel 212, the throat channel 213 and the diffusion channel 214 in sequence, and then leaves through the water outlet 215, returning to the inner tank 10.

[0057] The cross-sectional area of ​​the throat channel 213 is smaller than that of the contraction channel 212 and the diffusion channel 214, and the throat channel 213 is the narrowest part of the water flow channel 21. According to the Venturi principle, the water flow velocity increases and the pressure decreases when it passes through the throat channel 213, generating a certain negative pressure. Under the action of negative pressure, air can be drawn into the water flow through the air inlet 216. The air inlet 216 is constructed to generate tiny bubbles in the water flow from the passing air.

[0058] The water flow in the throat channel 213 carries microbubbles into the diffusion channel 214, and then returns to the inner tub 10 through the water outlet 215, cleaning the clothes in the inner tub 10. When the microbubbles burst, they can remove stains from the clothes, thereby cleaning them.

[0059] During the washing process, the pulsator 30 continuously rotates, spurring water from the inner tub 10 into the water flow channel 21, thereby continuously generating microbubbles in the water flow. These microbubbles persist for a longer period during the washing process, effectively removing stains from clothes and resulting in better cleaning. Furthermore, compared to adding detergent or washing powder to the washing machine, cleaning clothes through microbubbles is more economical and environmentally friendly.

[0060] In some embodiments, the second guide portion 204 includes a first guide surface 2041 and a second guide surface 2042, the first guide surface 2041 and the second guide surface 2042 being inclined relative to the axis of the inner barrel 10, and the inclination directions being opposite.

[0061] Specifically, the first guide surface 2041 and the second guide surface 2042 form an inverted "V" shape. (Reference) Figure 4 From a viewing angle, the first guide surface 2041 is located on the left and the second guide surface 2042 is located on the right. When the water flow rotates to the right, it can enter the inlet opening 211 under the guidance of the first guide surface 2041 on the left; when the water flow rotates to the left, it can enter the inlet opening 211 under the guidance of the second guide surface 2042 on the right.

[0062] In this embodiment, the shell 20, water flow channel 21, and air channel 22 of the foaming water channel structure have the same other structures, principles, and functions as the foaming water channel structure provided in Embodiment 1, so they will not be described in detail here.

[0063] Figure 5 and Figure 6 This illustration shows a third embodiment of the foaming channel structure for a pulsator washing machine provided by the present invention. In this embodiment, the foaming channel structure includes a housing 20, a water flow channel 21, and an air channel 22.

[0064] The housing 20 is mounted on the side wall of the inner tub 10 of the pulsator washing machine. A water flow channel 21 is formed within the housing 20, with a water inlet 211 at the bottom and a water outlet 215 at the top. The extension direction of the water flow channel 21 from the water inlet 211 to the water outlet 215 is inclined relative to the axial direction of the inner tub 10. The water flow channel 21 includes a contraction channel 212, a throat channel 213, and a diffusion channel 214, which are sequentially arranged from the water inlet 211 to the water outlet 215 and form a Venturi structure. An air channel 22 is formed within the housing 20 and is separated from the water flow channel 21. The air channel 22 communicates with the side wall of the throat channel 213 through multiple small air inlets 216. The water flow channel 21 is configured such that the water flow entering the water inlet 211 from the inner tub 10 under the action of centrifugal force returns to the inner tub 10 through the water outlet 215; the throat channel 213 is able to draw air from the air channel 22 into the water flow through multiple air inlet holes 216 under the action of negative pressure and generate tiny bubbles.

[0065] The inner tub 10 of the pulsator washing machine has a pulsator 30 at its bottom, and the pulsator 30 has water-dispersing ribs. When the pulsator washing machine is working, the pulsator 30 rotates in both directions, agitating the water flow. Under the action of centrifugal force, the water flow rotates to the left or right in the inner tub 10. The pulsator 30 can throw the water flow into the water inlet 211.

[0066] Rotating water flows into the water channel 21 through the inlet 211, passes sequentially through the contraction channel 212, the throat channel 213, and the diffusion channel 214, and then exits through the outlet 215, returning to the inner tub 10. The throat channel 213 has a smaller cross-sectional area than the contraction channel 212 and the diffusion channel 214, and is the narrowest part of the water channel 21. According to the Venturi principle, the water velocity increases and the pressure decreases when it passes through the throat channel 213, creating a certain negative pressure. This negative pressure allows air to be drawn into the water flow through the air inlet 216 from the air channel 22. The air inlet 216 is designed to generate tiny bubbles in the water flow. The water flow in the throat channel 213 carries these tiny bubbles into the diffusion channel 214, and then returns to the inner tub 10 through the outlet 215, cleaning the clothes in the inner tub 10. When the tiny bubbles burst, they can remove stains from the clothes, thus cleaning them.

[0067] The extension direction of the water flow channel 21 is tilted to the left or right of the axis of the inner tub 10. The water flow rotates to the left or right in the inner tub. When the rotation direction of the water flow is the same as the tilt direction of the water flow channel 21, or in other words, the rotation direction of the water flow and the tilt direction of the water flow channel 21 are both to the left or both to the right, more water flows into the water flow channel 21, and the water flow channel 21 has less resistance to the water flow. The water flow speed in the water flow channel 21 is faster, thereby generating more microbubbles and improving the cleaning effect on clothes.

[0068] During the washing process, the pulsator 30 continuously rotates, spurring water from the inner tub 10 into the water flow channel 21, thereby continuously generating microbubbles in the water flow. These microbubbles persist for a longer period during the washing process, effectively removing stains from clothes and resulting in better cleaning. Furthermore, compared to adding detergent or washing powder to the washing machine, cleaning clothes through microbubbles is more economical and environmentally friendly.

[0069] In order to continuously generate a large number of microbubbles during the forward and reverse rotation of the impeller, two aeration channel structures can be set in the inner barrel 10, and the water flow channels 21 of the two aeration channel structures are tilted in opposite directions. The water flow channel 21 of one aeration channel structure is tilted to the left relative to the axis of the inner barrel 10, and the water flow channel 21 of the other aeration channel structure is tilted to the right relative to the axis of the inner barrel 10.

[0070] When the water in the inner tub 10 rotates to the left, the water flow channel 21 tilted to the left generates a large number of tiny bubbles; when the water in the inner tub 10 rotates to the right, the water flow channel 21 tilted to the right generates a large number of tiny bubbles. Thus, a large number of tiny bubbles are continuously generated throughout the washing process, effectively cleaning the clothes.

[0071] In this embodiment, the shell 20, water flow channel 21, and air channel 22 of the foaming water channel structure have the same other structures, principles, and functions as the foaming water channel structure provided in Embodiment 1, so they will not be described in detail here.

[0072] The present invention also provides a pulsator washing machine, including the aeration channel structure of the pulsator washing machine provided above. The pulsator washing machine has an inner tub 10 and a pulsator 30 inside, with the pulsator 30 disposed at the bottom of the inner tub 10. The aeration channel structure includes a housing 20 disposed on the side wall of the inner tub 10, and a water flow channel 21 and an air channel 22 formed in the housing 20.

[0073] One or more aeration channel structures may be provided on the side wall of the inner tub 10, and the present invention does not limit this. In order to keep the inner tub 10 balanced, the multiple aeration channel structures may be symmetrically distributed with respect to the axis center of the inner tub 10.

[0074] Other specific structures, principles, and functions of the housing 20, water flow channel 21, and air channel 22 can be found in Embodiment 1, Embodiment 2, or Embodiment 3 of the foaming water channel structure of the pulsator washing machine provided above, and therefore will not be repeated here.

[0075] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by the present invention.

Claims

1. A foaming water channel structure for a pulsator washing machine, characterized in that, include: A housing, which is used to be installed on the side wall of the inner tub of a pulsator washing machine; A water flow channel is formed inside the shell. The bottom end of the water flow channel forms an inlet opening and the top end forms an outlet opening. The water flow channel includes a constriction channel, a throat channel, and a diffusion channel that are arranged sequentially from the inlet opening to the outlet opening and form a Venturi structure. An air passage is formed within the housing and is separated from the water flow passage. The air passage is connected to the sidewall of the throat passage through a plurality of small air inlet holes. The water flow channel is configured such that water flowing from the inner tub into the inlet opening under centrifugal force returns to the inner tub through the outlet opening; the throat channel is capable of drawing air from the air channel into the water flow through multiple air inlet holes under negative pressure and generating microbubbles.

2. The aeration channel structure of the pulsator washing machine according to claim 1, characterized in that, The top of the housing forms an air inlet for air to enter the air passage, which extends along the constriction passage to the throat passage.

3. The aeration channel structure of the pulsator washing machine according to claim 2, characterized in that, The air inlet is positioned at a higher elevation than the water outlet.

4. The aeration channel structure of the pulsator washing machine according to claim 2, characterized in that, There are two air channels, located on opposite sides of the water flow channel, and both air channels are connected to the air inlet.

5. The aeration channel structure of the pulsator washing machine according to claim 1, characterized in that, The air passage forms an enlarged air cavity outside the side wall of the throat passage.

6. The aeration channel structure of the pulsator washing machine according to claim 1, characterized in that, The contraction channel is configured to contract from the water inlet opening to the throat channel, and / or the connection between the diffusion channel and the throat channel forms a flared structure.

7. The aeration channel structure of the pulsator washing machine according to claim 1, characterized in that, The water outlet is provided with a first guide section for introducing water flow into the inner barrel.

8. The aeration channel structure of the pulsator washing machine according to claim 1, characterized in that, The housing is provided with a second guide section for guiding water flow into the water inlet opening. The second guide section is located in the middle of the water inlet opening and extends out of the water inlet opening at the bottom.

9. The aeration channel structure of the pulsator washing machine according to any one of claims 1 to 8, characterized in that, The water flow channel extends from the inlet to the outlet in a direction that is either parallel to or inclined to the axis of the inner tub.

10. A pulsator washing machine, characterized in that, The aeration channel structure of the pulsator washing machine as described in any one of claims 1 to 9 above.

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