Washing machine

Abstract

The invention relates to the technical field of washing machines, in particular to a washing machine, and aims at solving the problems that the number of tripod positions and structural ribs at the bottom of an existing inner barrel is large, dirt is prone to deposition, and cleaning is difficult through a method in the related technology. In order to achieve the purpose, the washing machine comprises an inner barrel, an outer barrel and a jet flow nozzle. The inner cylinder is arranged in the outer cylinder, the inner cylinder comprises an inner cylinder bottom, and the outer cylinder comprises an outer cylinder bottom; wherein the jet flow nozzle is arranged at the barrel bottom of the outer barrel, a water inlet of the jet flow nozzle is communicated with an external water source, and a water outlet of the jet flow nozzle faces the barrel bottom of the inner barrel and is used for jetting water flow towards the barrel bottom of the inner barrel. According to the washing machine, the water flow is directly sprayed to the bottom of the inner drum, dirt deposited at the tripod at the bottom of the inner drum can be cleaned more thoroughly, the cleaning effect on the drum of the washing machine is improved, bacterium breeding is reduced, and user health is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of washing machines, and in particular provides a washing machine. Background Art

[0002] Washing machines have become a must-have appliance in an increasing number of households, greatly simplifying laundry tasks and improving convenience. During use, dirt, lint, detergent, and moisture from clothing can enter and remain between the inner and outer drums. These residues can easily breed bacteria and mold in humid environments. If not cleaned regularly, these bacteria and mold can contaminate clothing, posing a threat to human health.

[0003] In the prior art, when the user selects the self-cleaning cycle, the washing machine generates agitation by increasing the water level and rotating at high speed, flushing out residue within the drum. However, the tripod at the bottom of the inner drum has numerous structural ribs, which easily accumulate dirt. This makes it difficult to clean using conventional methods, and can easily breed bacteria, potentially affecting user health.

[0004] Accordingly, this field requires a new technical solution to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve the above technical problems, namely, to solve the problem that the existing inner tube bottom tripod position has many structural ribs, which are easy to accumulate dirt and are difficult to clean using the methods in the relevant technology.

[0006] The present invention provides a washing machine, which includes an inner drum, an outer drum and a jet nozzle; the inner drum is arranged in the outer drum, the inner drum includes an inner drum bottom, and the outer drum includes an outer drum bottom; wherein the jet nozzle is arranged at the bottom of the outer drum, the water inlet of the jet nozzle is connected to an external water source, and the water outlet of the jet nozzle is toward the bottom of the inner drum, and is used to spray water toward the bottom of the inner drum.

[0007] In a specific embodiment of the above-mentioned washing machine, the jet nozzle includes a nozzle body; a circulation channel is constructed inside the nozzle body, the circulation channel extends along the nozzle body, and forms the water inlet and the water outlet at both ends of the nozzle body; wherein, the nozzle body also includes two guide ribs, the guide ribs are symmetrically arranged in the circulation channel to separate the circulation channel into a main flow channel and secondary flow channels distributed on both sides of the main flow channel.

[0008] In a specific embodiment of the above-mentioned washing machine, the guide rib includes an inner side wall close to the main channel, and the inner side wall includes a first end close to the water inlet and a second end close to the water outlet; wherein, the first end of the inner side wall is recessed in a direction away from the main channel, and the second end of the inner side wall is convex in a direction close to the main channel.

[0009] In a specific embodiment of the above-mentioned washing machine, the inner wall includes a first wall, a second wall and a third wall arranged in sequence from the water inlet to the water outlet, the curvature and the curvature change rate of the first wall are both greater than those of the second wall, the curvature and the curvature change rate of the first wall are both smaller than those of the third wall, and the bending directions of the first wall and the third wall are opposite.

[0010] In a specific embodiment of the above washing machine, the jet nozzle includes one or more water outlets, and the area of ​​the water outlet is smaller than the area of ​​the water inlet.

[0011] In a specific embodiment of the above washing machine, the orthographic projection of the jet nozzle on the bottom of the inner drum is a first position, and the distance between the first position and the center of the bottom of the inner drum is 1 / 3 to 2 / 3 of the diameter of the bottom of the inner drum.

[0012] In a specific embodiment of the above washing machine, the jet nozzle is inclined toward the center of the bottom of the inner drum, and the angle between the jet nozzle and the bottom of the outer drum is in the range of 30° to 60°.

[0013] In a specific embodiment of the above washing machine, the outer drum further includes a linear slide rail extending radially along the bottom of the outer drum, and the jet nozzle is slidably disposed on the linear slide rail.

[0014] In a specific embodiment of the above washing machine, the outer drum further includes an annular slide rail extending circumferentially along the bottom of the outer drum, the annular slide rail is connected to the linear slide rail to form a sliding track, and the jet nozzle is slidably arranged on the sliding track.

[0015] In a specific embodiment of the above-mentioned washing machine, during the operation of the jet nozzle, the inner drum of the washing machine rotates, and at intervals of a preset time, the rotation direction of the inner drum of the washing machine is switched.

[0016] Using the above technical solution, the present invention installs a jet nozzle at the bottom of the outer drum and uses it to spray water toward the bottom of the inner drum. The water swirls between the inner and outer drums, flushing away any residue between them. Furthermore, the water is sprayed directly onto the bottom of the inner drum, more thoroughly cleaning dirt deposited on the tripod at the bottom of the inner drum. This improves the cleaning effect of the washing machine drum, reduces bacterial growth, and ensures user health. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0018] Figure 1 It is a partial structural schematic diagram of the washing machine provided by the present invention;

[0019] Figure 2 yes Figure 1 Schematic diagram from another perspective;

[0020] Figure 3 It is a structural schematic diagram of the jet nozzle provided by the present invention;

[0021] Figure 4 is a cross-sectional schematic diagram of the jet nozzle provided by the present invention;

[0022] Figure 5 This is a schematic structural diagram of the bottom of the outer drum of the washing machine provided by the present invention;

[0023] Figure 6 Schematic diagram of the trajectory of the sliding track provided by the present invention;

[0024] Figure 7 This is a shear force distribution diagram of the bottom of the inner drum during self-cleaning in the related art;

[0025] Figure 8 1 is a schematic diagram of the jet flow of the jet nozzle provided by the present invention;

[0026] Figure 9 yes Figure 8 Shear force diagram at the bottom of the middle inner cylinder. Reference numerals:

[0027] 100, inner cylinder; 101, bottom of inner cylinder; 200, outer cylinder; 201, bottom of outer cylinder; 300, jet nozzle; 301, nozzle body; 302, guide rib; 3021, inner side wall; 303, main flow channel; 304, secondary flow channel; 400, linear slide rail; 500, annular slide rail. DETAILED DESCRIPTION

[0028] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are intended only to illustrate the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art may adjust these embodiments as needed to adapt them to specific applications. Such changes in application scenarios do not deviate from the basic principles of the present invention and fall within the scope of protection of the present invention.

[0029] It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are used solely for ease of description and are not intended to indicate or imply that the relevant devices or components must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, ordinal numbers such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted" and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0031] Washing machines have become a must-have appliance in an increasing number of households, greatly simplifying laundry tasks and improving convenience. During use, dirt, lint, detergent, and moisture from clothing can enter and remain between the inner and outer drums. These residues can easily breed bacteria and mold in humid environments. If not cleaned regularly, these bacteria and mold can contaminate clothing, posing a threat to human health.

[0032] In the prior art, when the user selects the self-cleaning cycle, the washing machine generates agitation by increasing the water level and rotating at high speed, flushing out residue within the drum. However, the tripod at the bottom of the inner drum has numerous structural ribs, which easily accumulate dirt. This makes it difficult to clean using conventional methods, and can easily breed bacteria, potentially affecting user health.

[0033] The washing machine of the present invention can more thoroughly clean dirt deposited on the tripod at the bottom of the inner drum, thereby improving the cleaning effect of the washing machine drum, reducing the growth of bacteria, and ensuring the health of users.

[0034] Figure 1 It is a partial structural diagram of the washing machine provided by the present invention. Figure 2 yes Figure 1 Schematic diagram from another perspective. Figure 1 and Figure 2 As shown, the washing machine of the present invention includes an inner tub 100 , an outer tub 200 and a jet nozzle 300 .

[0035] The inner cylinder 100 is disposed within the outer cylinder 200. The inner cylinder 100 includes an inner cylinder bottom 101, and the outer cylinder 200 includes an outer cylinder bottom 201. A jet nozzle 300 is disposed at the outer cylinder bottom 201. The water inlet of the jet nozzle 300 is connected to an external water source, and the water outlet of the jet nozzle 300 faces the inner cylinder bottom 101, for spraying water toward the inner cylinder bottom 101.

[0036] In the present invention, using the above-mentioned technical solution, a jet nozzle 300 is installed at the outer drum bottom 201. This jet nozzle 300 sprays water toward the inner drum bottom 101. The water swirls between the inner and outer drums 100, 200, flushing away any residue between them. Furthermore, the water is directly sprayed toward the inner drum bottom 101, more thoroughly cleaning dirt deposited at the tripod portion of the inner drum bottom 101. This improves the cleaning effect of the washing machine drum, reduces bacterial growth, and ensures user health.

[0037] Preferably, when the washing machine runs the drum self-cleaning program, the jet nozzle 300 sprays water toward the inner drum bottom 101, while the inner drum 100 rotates in a controlled manner. The cooperation between the jet nozzle 300 and the inner drum rotation can improve the cleaning effect of the washing machine drum.

[0038] Preferably, the rotation speed of the inner drum 100 ranges from 20 rpm to 50 rpm. For example, the rotation speed of the inner drum 100 can be 20 rpm, 25 rpm, 30 rpm, 35 rpm, 40 rpm, 45 rpm, or 50 rpm.

[0039] Preferably, the inner drum 100 of the washing machine switches its rotation direction at predetermined intervals. In other words, the inner drum 100 rotates alternately forward and reverse. This arrangement can ensure the washing machine's self-cleaning cleaning power and cleaning effect.

[0040] Preferably, the value range of the preset period is 15s to 30s. For example, the value of the preset period can be 15s, 17s, 19s, 22s, 25s, 28s or 30s.

[0041] In one embodiment, when the washing machine runs the drum self-cleaning program, the jet nozzle 300 sprays water toward the bottom 101 of the inner drum, and the inner drum 100 is controlled to rotate at a speed of 30 rpm. The rotation direction of the inner drum 100 of the washing machine is switched every 20 seconds.

[0042] In another embodiment, when the washing machine runs the drum self-cleaning program, the jet nozzle 300 sprays water toward the bottom 101 of the inner drum, and the inner drum 100 is controlled to rotate at a speed of 40 rpm. The rotation direction of the inner drum 100 of the washing machine is switched every 15 seconds.

[0043] Preferably, the washing machine further comprises a heating device, and when the washing machine runs the drum self-cleaning program, the heating device is used to heat the water in the inner drum 100. In this way, the washing machine is disinfected and sterilized using high-temperature water, which is conducive to further improving the effect of drum self-cleaning.

[0044] Figure 3 Schematic diagram of the structure of the jet nozzle provided by the present invention, Figure 4 Schematic diagram of the cross section of the jet nozzle provided by the present invention. Figure 3 and Figure 4 As shown, in this preferred embodiment, the jet nozzle 300 includes a nozzle body 301. A flow channel is internally configured within the nozzle body 301. The flow channel extends along the nozzle body 301 and forms a water inlet and a water outlet at both ends of the nozzle body 301. The nozzle body 301 also includes two guide ribs 302, which are symmetrically arranged in the flow channel to separate the flow channel into a main flow channel 303 and secondary flow channels 304 distributed on both sides of the main flow channel 303. Both ends of the main flow channel 303 and the secondary flow channel 304 are connected to the water inlet and water outlet of the jet nozzle.

[0045] The guide ribs 302 serve to guide and divert flow, facilitating the jet nozzle's ejection of a high-speed, oscillating water jet. By providing the guide ribs 302 within the flow channel, the two guide ribs 302 divide the flow channel into a main channel 303 and two secondary channels 304. Fluid enters the main channel 303 and secondary channels 304 through the jet nozzle's water inlet. Due to the pressure difference between the main and secondary channels, as well as the adsorption and surface tension between water and the solid surface, the fluid flows toward the main channel 303, with most of the fluid entering the main channel 303 and a small portion entering the two secondary channels 304. The fluid in the main channel 303 flows toward the outlet along the guide ribs 302, which have a certain curvature. When the fluid reaches the position of the guide ribs 302 near the outlet, the fluid is diverted, with one portion entering the secondary channel and colliding with the fluid at the secondary channel outlet, while the other portion passes through the outlet. The two streams flow in different directions, creating an oscillating effect.

[0046] Specifically, the nozzle body 301 includes first and second guide ribs, which are symmetrically arranged in the flow channel. These ribs separate the flow channel into a main channel 303 and first and second secondary channels, which are located on either side of the main channel 303. The first and second secondary channels are symmetrically arranged. The inlet of the main channel, the inlet of the first secondary channel, and the inlet of the second secondary channel are connected to the water inlet of the jet nozzle, while the outlet of the main channel, the outlet of the first secondary channel, and the outlet of the second secondary channel are connected to the water outlet of the jet nozzle.

[0047] Preferably, the ratio of the length of the main channel 303 to its width is greater than or equal to 2. That is, a:b ≥ 2, where a is the length of the main channel and b is the width of the main channel. For example, the ratio of the length of the main channel 303 to its width is 2.5. This configuration makes it easier for the jet nozzle 300 to produce an unsteady jet at low pressure.

[0048] In this preferred embodiment, combined with Figure 4 As shown, the guide rib 302 includes an inner sidewall 3021 near the main channel 303. The inner sidewall 3021 includes a first end near the water inlet and a second end near the water outlet. The first end of the inner sidewall 3021 is concave in a direction away from the main channel 303, and the second end of the inner sidewall 3021 is convex in a direction toward the main channel 303.

[0049] The first end of the inner sidewall 3021 is concave away from the main channel 303, while the second end of the inner sidewall 3021 is convex toward the main channel 303. This arrangement allows fluid to enter the primary and secondary channels in a predetermined ratio. The fluid then flows along the inner sidewall 3021 due to the Coanda effect, creating a pressure differential between the main channel 303 and the secondary channel 304, producing an oscillating water spray effect.

[0050] The Coanda effect, also known as the wall adhesion or Coanda effect, is a physical phenomenon in which a fluid (such as water or air) changes its original flow direction when encountering a curved object, flowing along the protruding surface of the object. The Coanda effect is due to surface friction, i.e., fluid viscosity, generated by the contact between the fluid and the surface of the object. In this case, even if the curvature is not very large, the fluid will tend to flow along the surface of the object. In this preferred embodiment, the jet nozzle is based on the Coanda effect and is a Coanda effect jet nozzle.

[0051] In this preferred embodiment, the inner wall includes a first wall, a second wall, and a third wall arranged in sequence from the water inlet to the water outlet. The curvature and curvature change rate of the first wall are greater than those of the second wall, the curvature and curvature change rate of the first wall are less than those of the third wall, and the curvature directions of the first wall and the third wall are opposite. This arrangement enables the fluid to flow along the inner wall under the action of the Coanda effect, so that a pressure difference is generated between the main and secondary flow channels, and the jet nozzle sprays out a high-speed oscillating jet of water. Among them, the curvature change rate refers to the speed at which the curvature degree of a curve changes at a certain point. For example, if the curvature change rate of a curve is large, it means that it bends very quickly at this point; if the curvature change rate is very small, it means that the curve bends relatively slowly at this point.

[0052] Preferably, the curvature of the first wall ranges from 100 to 300, and the curvature of the third wall ranges from 350 to 1500. This arrangement ensures that the fluid flows along the inner wall under the action of the Coanda effect, and the jet nozzle sprays a high-speed oscillating jet of water.

[0053] Preferably, the curvature of the first wall is 200, and the curvature of the third wall is 800. Such an arrangement is conducive to further improving the effect of the jet nozzle.

[0054] In this preferred embodiment, the jet nozzle 300 includes one or more outlets, each smaller in area than the inlet. Given a constant fluid flow rate, the fluid velocity is inversely proportional to the area of ​​the flow. By making the outlet area smaller than the inlet area, the fluid velocity can be increased, thereby enhancing the flushing effect on the bottom of the inner drum.

[0055] The number of water outlets can be flexibly set according to demand, as long as the total area of ​​the water outlets is smaller than the area of ​​the water inlets.

[0056] In this preferred embodiment, the orthographic projection of the jet nozzle 300 on the inner cylinder bottom 101 is the first position. The distance between the first position and the center of the inner cylinder bottom 101 is 1 / 3 to 2 / 3 of the diameter of the inner cylinder bottom 101. m / n = 1 / 3 to 2 / 3, where m is the distance between the first position and the center of the inner cylinder bottom 101, and n is the diameter of the inner cylinder bottom 101. For example, the distance between the first position and the center of the inner cylinder bottom 101 is 1 / 2 of the diameter of the inner cylinder bottom 101.

[0057] By ensuring that the distance between the first position and the center of the inner drum bottom 101 is 1 / 3 to 2 / 3 of the diameter of the inner drum bottom 101, the cleaning coverage can be maximized. By designing the position of the jet nozzle 300 and combining its swinging spray effect, only a single jet nozzle 300 is required to effectively clean the inner drum bottom.

[0058] Furthermore, the jet nozzle 300 includes multiple possible configurations.

[0059] In a first possible embodiment, the jet nozzle 300 is vertically arranged on the outer cylinder bottom 201. The angle between the jet nozzle 300 and the outer cylinder bottom 201 is 90 degrees. This facilitates the installation of the jet nozzle 300.

[0060] In a second possible embodiment, the jet nozzle 300 is tilted toward the outer cylinder bottom 201. Preferably, the jet nozzle 300 is tilted toward the center of the inner cylinder bottom 101, and the angle between the jet nozzle 300 and the outer cylinder bottom 201 ranges from 30° to 60°. For example, the angle between the jet nozzle 300 and the outer cylinder bottom 201 can be 30°, 35°, 39°, 43°, 45°, 50°, 52°, 53°, 55°, 58°, or 60°. By limiting the angle between the jet nozzle 300 and the outer cylinder bottom 201 to this range, it is easier to clean blind spots such as structural ribs and pits, thereby improving the cleaning effect of the inner cylinder bottom.

[0061] In one embodiment, a washing machine is equipped with a first jet nozzle and a second jet nozzle. The first jet nozzle is vertically mounted on the bottom of the outer drum, while the second jet nozzle is tilted at a 45-degree angle to the bottom of the outer drum. The first and second jet nozzles are located on either side of the center of the bottom of the inner drum. When the washing machine is running the drum self-cleaning program, the first and second jet nozzles can spray high-speed, oscillating jets of water. This combination of two jets in different directions, combined with the rotation of the drum, helps enhance the washing machine's drum self-cleaning performance.

[0062] Preferably, the outer cylinder bottom 201 is configured with a mounting hole, and the jet nozzle 300 is mounted in the mounting hole of the outer cylinder bottom 201, and the water outlet of the jet nozzle 300 is located on the side of the outer cylinder bottom 201 close to the inner cylinder bottom 101. It is understandable that the mounting hole and the jet nozzle 300 correspond one to one.

[0063] Preferably, the jet nozzle 300 is fixed to the mounting hole by welding. Welding is low in cost and provides a relatively strong connection. The jet nozzle 300 is fixed to the mounting hole by welding, which not only meets the strength requirements for use but also helps reduce installation costs.

[0064] Figure 5 This is a schematic diagram of the structure of the outer drum bottom of the washing machine provided by the present invention. Figure 5 As shown, in this preferred embodiment, the outer cylinder 200 further includes a linear slide 400 extending radially along the outer cylinder bottom 201, and the jet nozzle 300 is slidably disposed on the linear slide 400. By providing the linear slide 400, the jet nozzle 300 is slidably disposed on the linear slide 400, and in conjunction with the rotation of the inner cylinder 100, it is beneficial to increase the cleaning coverage of the jet nozzle 300 and improve the cleaning effect of the inner cylinder bottom.

[0065] In a first possible embodiment, the washing machine includes only one jet nozzle. The outer drum 200 includes a linear slide 400 extending radially along the outer drum bottom 201. The jet nozzle is slidably mounted on the linear slide 400. When the washing machine is running the drum self-cleaning program, the jet nozzle sprays water toward the inner drum bottom 101. Simultaneously, the inner drum 100 is controlled to rotate at 40 rpm, with the rotation direction of the inner drum 100 switching every 20 seconds.

[0066] In a first possible embodiment, the washing machine includes only one jet nozzle. The outer drum 200 includes a linear slide 400 extending radially along the outer drum bottom 201. The jet nozzle is slidably mounted on the linear slide 400. When the washing machine is running the drum self-cleaning program, the jet nozzle sprays water toward the inner drum bottom 101. Simultaneously, the inner drum 100 is controlled to rotate at 40 rpm, with the rotation direction of the inner drum 100 switching every 20 seconds.

[0067] In a second possible embodiment, the washing machine is provided with a third jet nozzle and a fourth jet nozzle, and the outer drum 200 includes a linear slide 400 extending radially along the outer drum bottom 201. The third jet nozzle is slidably arranged on the linear slide, and the third jet nozzle is perpendicular to the outer drum bottom. The fourth jet nozzle is arranged at a 30° angle at the outer drum bottom. The third jet nozzle and the fourth jet nozzle are distributed on both sides of the center of the inner drum bottom. When the washing machine runs the drum self-cleaning program, the third jet nozzle and the fourth jet nozzle can spray high-speed oscillating jets of water, while the inner drum 100 is controlled to rotate at a speed of 50 rpm, and the inner drum 100 of the washing machine switches its rotation direction every 30 seconds.

[0068] Preferably, the washing machine further comprises a driving motor and a transmission mechanism, wherein the driving motor and the jet nozzle can be connected via the transmission mechanism to drive the jet nozzle to move along the linear slide rail 400 .

[0069] In this preferred embodiment, combined with Figure 5 and Figure 6 As shown, the outer cylinder 200 further includes an annular slide rail 500 extending along the circumference of the outer cylinder bottom 201. The annular slide rail 500 is connected with the linear slide rail 400 to form a sliding track. The jet nozzle 300 is slidably arranged on the sliding track. Figure 6 As shown, the jet nozzle 300 can move forward or backward along the sliding track. By connecting the annular slide 500 and the linear slide 400 to form a sliding track, the jet nozzle 300 can move in the radial and circumferential directions. This can further expand the cleaning coverage of the jet nozzle 300 and improve the cleaning effect on the bottom of the inner drum. Only one jet nozzle 300 is required to meet the cleaning needs.

[0070] In one possible embodiment, the washing machine includes only one jet nozzle. The outer drum 200 includes an annular slide rail 500 extending circumferentially along the outer drum bottom 201. The annular slide rail 500 connects to the linear slide rail 400 to form a sliding track, and the jet nozzle is slidably mounted on the sliding track. When the washing machine is running the drum self-cleaning program, the jet nozzle sprays water toward the inner drum bottom 101. Simultaneously, the inner drum 100 rotates at a controlled speed of 20 rpm, switching rotation direction every 20 seconds.

[0071] In this preferred embodiment, the inner drum 100 of the washing machine rotates while the jet nozzle 300 is operating, and the inner drum 100 of the washing machine switches its rotation direction at predetermined intervals. The jet nozzle 300 combined with the inner drum rotation can improve the cleaning effect of the washing machine.

[0072] Preferably, the jet nozzle 300 further includes a connecting portion, which is disposed at the end of the nozzle body 301 where the water inlet is located. The connecting portion is configured with a connecting flow channel that communicates with the water inlet of the circulation channel. The provision of the connecting flow channel facilitates connection to an external water source.

[0073] The following combination Figures 7 to 9 , the self-cleaning effect of the washing machine in the present invention is described.

[0074] Figure 7 This is the shear force distribution diagram of the inner drum bottom during self-cleaning in the related art. Figure 7 From the simulation results shown, it can be seen that the shear force on the bottom of the inner tube is unevenly distributed. The edge of the inner tube bottom is subjected to a larger shear force (about 5Pa), and the shear force on the tripod and the center of the inner tube bottom is almost 0, resulting in a poor cleaning effect.

[0075] Figure 8 Schematic diagram of the jet flow of the jet nozzle provided by the present invention. Figure 9 yes Figure 8 Shear force diagram at the bottom of the middle inner cylinder. Figure 8 and Figure 9 The test conditions in this test are that the jet nozzle is tilted toward the center of the inner drum bottom, the angle between the jet nozzle and the outer drum bottom is 45°, and the distance between the jet nozzle and the center of the inner drum bottom is 1 / 3 of the inner drum bottom diameter. According to the simulation test results, the shear force on the inner drum bottom can reach over 1000 Pa, which can significantly improve the cleaning effect of the jet coverage area. At the same time, combined with the rotation of the inner drum, the water jet from the jet nozzle can largely cover the middle area of ​​the inner drum bottom and the tripod, more thoroughly cleaning the dirt accumulated on the tripod of the inner drum bottom, improving the cleaning effect of the washing machine drum, reducing bacterial growth, and ensuring user health.

[0076] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A washing machine, characterized in that: The washing machine comprises an inner drum, an outer drum and a jet nozzle; The inner cylinder is arranged in the outer cylinder, the inner cylinder includes an inner cylinder bottom, and the outer cylinder includes an outer cylinder bottom; wherein, the jet nozzle is arranged at the bottom of the outer cylinder, the water inlet of the jet nozzle is connected to an external water source, and the water outlet of the jet nozzle is toward the bottom of the inner cylinder, and is used to spray water toward the bottom of the inner cylinder.

2. The washing machine according to claim 1, wherein The jet nozzle includes a nozzle body; a flow channel is configured inside the nozzle body, the flow channel extends along the nozzle body, and forms the water inlet and the water outlet at both ends of the nozzle body; Wherein, the nozzle body further includes two guide ribs, and the guide ribs are symmetrically arranged in the circulation channel to separate the circulation channel into a main flow channel and secondary flow channels distributed on both sides of the main flow channel.

3. The washing machine according to claim 2, characterized in that The guide rib includes an inner side wall close to the main channel, and the inner side wall includes a first end close to the water inlet and a second end close to the water outlet; wherein, the first end of the inner side wall is concave in a direction away from the main channel, and the second end of the inner side wall is convex in a direction close to the main channel.

4. The washing machine according to claim 3, characterized in that The inner wall includes a first wall, a second wall and a third wall arranged in sequence from the water inlet to the water outlet. The curvature and the curvature change rate of the first wall are both greater than those of the second wall, the curvature and the curvature change rate of the first wall are both smaller than those of the third wall, and the curvature directions of the first wall and the third wall are opposite.

5. The washing machine according to claim 2, characterized in that The jet nozzle includes one or more water outlets, and the area of ​​the water outlet is smaller than the area of ​​the water inlet.

6. The washing machine according to any one of claims 1 to 5, characterized in that: The orthographic projection of the jet nozzle on the bottom of the inner cylinder is a first position, and the distance between the first position and the center of the bottom of the inner cylinder is 1 / 3 to 2 / 3 of the diameter of the bottom of the inner cylinder.

7. The washing machine according to any one of claims 1 to 5, characterized in that: The jet nozzle is inclined toward the center of the bottom of the inner cylinder, and the angle between the jet nozzle and the bottom of the outer cylinder is in the range of 30° to 60°.

8. The washing machine according to any one of claims 1 to 5, characterized in that: The outer cylinder further comprises a linear slide rail extending radially along the bottom of the outer cylinder, and the jet nozzle is slidably arranged on the linear slide rail.

9. The washing machine according to claim 8, characterized in that The outer cylinder further comprises an annular slide rail extending along the circumference of the bottom of the outer cylinder. The annular slide rail is connected with the linear slide rail to form a sliding track. The jet nozzle is slidably arranged on the sliding track.

10. The washing machine according to any one of claims 1 to 5, characterized in that: During the operation of the jet nozzle, the inner drum of the washing machine rotates, and the rotation direction of the inner drum of the washing machine is switched at preset time intervals.

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