Bubble generator of dish washing machine and dish washing machine

Abstract

The bubble generator comprises a first generator and a second generator, the first generator is provided with a channel, gas-liquid mixed fluid flows through the channel to generate bubbles, the channel comprises a first section and a second section which are communicated, the first section is located on the upstream of the second section in the flowing direction of the gas-liquid mixed fluid, and the second section is located on the upstream of the second section in the flowing direction of the gas-liquid mixed fluid; the cross-sectional area of the first section perpendicular to the flowing direction is gradually reduced along the flowing direction, and the cross-sectional area of the second section perpendicular to the flowing direction is gradually increased along the flowing direction; the second generator is located on the downstream portion of the first generator and comprises a plurality of blades, and the blades are arranged in the circumferential direction of the second generator at intervals and used for dividing bubbles in fluid flowing out of the first generator; the third generator is located on the downstream of the second generator and provided with meshes, and the meshes are used for dividing bubbles in fluid flowing out of the second generator. According to the bubble generator of the dish washing machine, high-concentration fine bubbles can be generated, and the cleaning effect is good.

Description

Technical Field

[0001] This invention relates to the field of dishwasher technology, and more specifically, to a bubble generator for a dishwasher and a dishwasher. Background Technology

[0002] As a new type of product integrating "washing, sanitizing, drying, and storage" functions, the primary task of a dishwasher is to clean dishes thoroughly. However, in related technologies, the bubble generators in dishwashers produce large-sized, low-concentration bubbles, requiring a large amount of dishwashing supplies to clean dishes, resulting in high operating costs. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a bubble generator for a dishwasher, wherein the bubble generator produces small-sized, high-concentration bubbles, requiring less dishwashing supplies to clean dishes and resulting in lower operating costs.

[0004] Another object of the present invention is to provide a dishwasher having the above-described bubble generator.

[0005] A bubble generator for a dishwasher according to an embodiment of the present invention includes: a first generator having a channel through which a gas-liquid mixture flows to generate bubbles; the channel including a first segment and a second segment connected to each other; the first segment being upstream of the second segment in the flow direction of the gas-liquid mixture; the cross-sectional area of ​​the first segment perpendicular to the flow direction gradually decreasing along the flow direction, and the cross-sectional area of ​​the second segment perpendicular to the flow direction gradually increasing along the flow direction; a second generator being downstream of the first generator; the second generator including a plurality of blades arranged at circumferential intervals along the second generator; the blades being used to separate bubbles in the fluid flowing out of the first generator; and a third generator being downstream of the second generator; the third generator having a mesh for separating bubbles in the fluid flowing out of the second generator.

[0006] According to an embodiment of the present invention, the bubble generator of the dishwasher generates bubbles in the fluid sequentially through a first generator, a second generator, and a third generator. This enables the fluid to produce highly concentrated microbubbles, resulting in better cleaning of tableware and less consumption of dishwashing supplies, thus reducing operating costs.

[0007] In addition, the bubble generator according to the above embodiments of the present invention may also have the following additional technical features:

[0008] According to some embodiments of the present invention, the channel extends along the arrangement direction of the first generator and the second generator, and there are multiple channels, which are arranged side by side with intervals between them.

[0009] According to some embodiments of the present invention, the plurality of channels include a first channel and a plurality of second channels, wherein the first channel is located at the center of the first generator in a direction perpendicular to the flow direction, and the plurality of second channels are arranged at intervals around the first channel.

[0010] According to some embodiments of the present invention, the cross-sectional area of ​​the outlet end of the first segment in the first channel is greater than the cross-sectional area of ​​the outlet end of the first segment in the second channel.

[0011] According to some embodiments of the present invention, the channel includes a third segment that connects the first segment and the second segment, and the cross-sectional area of ​​the third segment perpendicular to the flow direction is equal to the cross-sectional area of ​​the outlet end of the first segment.

[0012] According to some embodiments of the present invention, the inlet end of the second segment has an annular end face that is perpendicular to the flow direction and extends around the inlet of the second segment.

[0013] According to some embodiments of the present invention, the blade extends parallel to the through direction of the channel, or the extension direction of the blade intersects with but is not perpendicular to the through direction of the channel.

[0014] According to some embodiments of the present invention, the second generator includes a blocking portion, and a plurality of said blades are arranged at intervals around the blocking portion.

[0015] According to some embodiments of the present invention, the bubble generator includes a plurality of connecting posts, which are disposed between the blocking part and the first generator, and the channel, the space between the plurality of connecting posts, and the space between adjacent blades are sequentially connected.

[0016] According to some embodiments of the present invention, the bubble generator includes a limiting member and a sleeve, wherein the first generator, the second generator, the third generator and the limiting member are sequentially disposed within the sleeve, and the first generator is fixedly connected to the sleeve; or, at least the second generator, the third generator and the limiting member are sequentially disposed within the sleeve, and the limiting member is fixedly connected to the sleeve.

[0017] The dishwasher according to an embodiment of the present invention includes a bubble generator according to an embodiment of the present invention, the inner tank having a washing chamber, and the bubble water generated by the bubble generator is used to be introduced into the washing chamber.

[0018] According to some embodiments of the present invention, the inner liner is provided with a water cup, the water cup having a cup outlet communicating with the washing chamber, the washing chamber being provided with a spray assembly, the dishwasher including a gas-liquid premixing chamber, the gas-liquid premixing chamber having a liquid inlet, a gas inlet and an outlet, the gas inlet being used to introduce gas, wherein the cup outlet is connected to the liquid inlet through a first flow path to allow liquid in the washing chamber to flow into the gas-liquid premixing chamber, the gas-liquid premixing chamber being used to mix gas and liquid to obtain a gas-liquid mixed fluid, a bubble generator being provided at the outlet and being used to make the gas-liquid mixed fluid into sparkling water, the outlet being connected to the washing chamber to allow the sparkling water produced by the bubble generator to be introduced into the washing chamber; the cup outlet is connected to the spray assembly through a second flow path to allow liquid in the washing chamber to flow towards the spray assembly.

[0019] According to some embodiments of the present invention, the outlet is provided with an internal thread, the bubble generator is provided with an external thread, the bubble generator is inserted into the outlet, and the internal thread is threadedly connected to the external thread; and / or, the bubble generator is inserted into the outlet, and the outlet is provided with an inwardly protruding boss, the boss stopping downstream of the bubble generator.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a front view of a bubble generator according to a first embodiment of the present invention;

[0023] Figure 2 yes Figure 1 A sectional view;

[0024] Figure 3 yes Figure 2 A cross-sectional view along the direction indicated by line AA;

[0025] Figure 4 This is a partial cross-sectional view of a bubble generator according to a second embodiment of the present invention;

[0026] Figure 5 This is a cross-sectional view of a bubble generator according to a third embodiment of the present invention, wherein the blades are of the direct-flow type;

[0027] Figure 6 yes Figure 2 A cross-sectional view showing that the blades are swirl-type;

[0028] Figure 7 yes Figure 2 A cross-sectional view along the direction indicated by line BB;

[0029] Figure 8 yes Figure 2 A cross-sectional view along the direction indicated by line CC;

[0030] Figure 9 This is a cross-sectional view of a bubble generator according to a fourth embodiment of the present invention;

[0031] Figure 10 This is a front view of a bubble generator according to the fifth embodiment of the present invention;

[0032] Figure 11 yes Figure 10 A sectional view;

[0033] Figure 12 This is a schematic diagram of a dishwasher according to an embodiment of the present invention, wherein the drive unit is a circulation pump;

[0034] Figure 13 This is a schematic diagram of a dishwasher according to an embodiment of the present invention, wherein the drive unit includes a water pump and a circulation pump;

[0035] Figure 14 This is a schematic diagram of the cooperative structure of the gas-liquid premixing chamber and the bubble generator according to the first embodiment of the present invention;

[0036] Figure 15 This is a schematic diagram of the cooperative structure of the gas-liquid premixing chamber and the bubble generator according to the fifth embodiment of the present invention;

[0037] Figure 16 yes Figure 15 The front view;

[0038] Figure 17 This is a schematic diagram of the cooperative structure of the gas-liquid premixing chamber and the bubble generator according to the sixth embodiment of the present invention;

[0039] Figure 18 This is a schematic diagram showing the size and concentration of bubbles in bubble water produced by a bubble generator according to an embodiment of the present invention, wherein the vertical axis is on the order of 10. 7 ;

[0040] Figure 19 This is a schematic diagram comparing the removal rates of contaminants on tableware surfaces by bubbled water produced by a bubble generator according to an embodiment of the present invention with those by ordinary water.

[0041] Figure label:

[0042] Dishwasher 1000; Cutlery 2000; Shell 200; Dish rack 300;

[0043] Inner tank 10; Washing chamber 11; Spray assembly 111; Water cup 12; Cup outlet 121;

[0044] Bubble generator 20; gas-liquid premixing chamber 21; air inlet 211; liquid inlet 212; outlet 213; boss 216; connecting pipe 217; bubble generator 22;

[0045] First generator 221; Channel 2211; First segment 2212; Second segment 2213; Third segment 2214; Annular end face 2215; First channel 2216; Second channel 2217;

[0046] Second generator 222; blade 2221; blocking part 2222; third generator 223;

[0047] Connecting post 23; limiting member 24; limiting protrusion 241; sleeve 25; external thread 251;

[0048] Drive pump 30; water pump 31; circulation pump 32; reversing valve 40; valve inlet 41; first valve outlet 42; second valve outlet 43; first flow path 61; second flow path 62; liquid inlet flow path 63. Detailed Implementation

[0049] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0050] In the description of this invention, it should be understood that the terms "center," "upper," "lower," "left," "right," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "circumferential," 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.

[0051] In the description of this invention, "first feature" and "second feature" may include one or more of the features, "multiple" means two or more, "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them, and "above," "over," and "on top" the second feature may include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0052] The bubble generator 22 of the dishwasher 1000 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0053] Reference Figures 1-17 As shown, the bubble generator 22 according to an embodiment of the present invention may include a first generator 221.

[0054] Specifically, the first generator 221 is provided with a channel 2211 through which the gas-liquid mixture flows to generate bubbles. The channel 2211 includes a first section 2212 and a second section 2213 that are connected in the direction of flow of the gas-liquid mixture (e.g., in the direction of flow of the gas-liquid mixture). Figures 1-2 As shown in the direction from left to right, the first segment 2212 is located upstream of the second segment 2213. The cross-sectional area of ​​the first segment 2212 perpendicular to the flow direction gradually decreases along the flow direction, while the cross-sectional area of ​​the second segment 2213 perpendicular to the flow direction gradually increases along the flow direction.

[0055] A gas-liquid mixture is a fluid formed by mixing gas and liquid. The gas-liquid mixture flows sequentially through a first section 2212 and a second section 2213. In the flow direction, the first section 2212 is a contraction section, causing the flow velocity and pressure of the fluid within it to gradually increase, thereby increasing the dissolved gas content in the fluid. The second section 2213 is an expansion section, causing the pressure of the fluid within it to gradually decrease, releasing gas from the fluid and generating a large number of bubbles within it.

[0056] The bubble generator 22 also includes a second generator 222, which is located downstream of the first generator 221. The second generator 222 includes a plurality of blades 2221 for separating bubbles in the fluid flowing out of the first generator 221.

[0057] Multiple blades 2221 refer to two, three, or more blades. Multiple blades 2221 can cut more bubbles, facilitating the dispersion of more bubbles into smaller bubbles. Furthermore, the multiple blades 2221 are arranged at circumferential intervals along the second generator 222, allowing the fluid to flow more evenly to the multiple blades 2221, resulting in more bubbles being segmented by the multiple blades 2221. Additionally, the fluid flowing out of the first generator 221 contains a large number of bubbles due to the passage of the first section 2212 and the second section 2213, thus enabling the blades 2221 to segment even more bubbles and generate a large number of smaller bubbles.

[0058] The bubble generator 22 also includes a third generator 223, located downstream of the second generator 222. The third generator 223 has mesh openings for separating bubbles in the fluid flowing out of the second generator 222. The third generator 223 may include multiple smaller mesh openings to cut bubbles in the fluid, further separating the smaller bubbles in the fluid flowing out of the second generator into even smaller microbubbles to generate a high concentration of microbubbles.

[0059] In some related technologies, dishwashers use sparkling water in conjunction with dishwashing supplies to clean dishes. Sparkling water is effective at removing grease, but the bubbles generated by the dishwasher's bubble generator are large in size and low in concentration, resulting in poor cleaning of dishes. It also requires a large amount of dishwashing supplies (such as dishwashing powder, rinsing agent, or dishwashing liquid), leading to high operating costs.

[0060] In this application, the fluid flows sequentially through the first generator 221, the second generator 222, and the third generator 223, which can sequentially perform at least three different levels of bubble generation on the fluid. The downstream generator can generate smaller and more numerous bubbles than the upstream generator, producing a layered effect of high-concentration microbubbles on the fluid. This results in a large number of microbubbles being generated, with smaller bubble size and higher concentration, which has a better cleaning effect on the tableware 2000, resulting in less dishwashing consumables and lower operating costs.

[0061] In addition, the bubble generator 22 includes a first generator 221, a second generator 222 and a third generator 223. The first generator 221 is provided with a channel 2211, the second generator 222 is provided with blades 2221, and the third generator 223 is provided with a mesh. The structure of the three-stage generator (i.e. the first generator 221, the second generator 222 and the third generator 223) is relatively simple, which makes the internal structure of the bubble generator 22 relatively simple and the cost relatively low.

[0062] According to an embodiment of the present invention, the bubble generator 22 of the dishwasher 1000 generates bubbles in the fluid in sequence through the first generator 221, the second generator 222 and the third generator 223, which can generate high concentration of fine bubbles in the fluid, resulting in better cleaning effect on the tableware 2000, less dishwashing consumables are consumed, and reduced operating costs.

[0063] In some embodiments of the present invention, such as Figures 2-4As shown, the channel 2211 extends along the arrangement direction of the first generator 221 and the second generator 222. For example, the arrangement direction of the first generator 221 and the second generator 222 is parallel to or at a certain angle to the extension direction of the channel 2211, so that the fluid in the channel 2211 can easily flow into the second generator 222 after flowing out of the first generator 221, making the flow of fluid between the first generator 221 and the second generator 222 smoother.

[0064] Multiple channels 2211 are arranged side-by-side with intervals between them, forming a parallel structure. This allows a large flow rate of fluid to be divided into multiple smaller flow rates, which are then distributed among the parallel channels 2211. This enables the multiple fluid streams to be processed separately by the multiple channels 2211, resulting in each smaller flow rate generating a large number of bubbles, thus increasing the number of bubbles produced by the first generator 221. Furthermore, the multiple parallel channels 2211 are less likely to clog simultaneously, reducing the risk of complete blockage and improving the operational reliability of the first generator 221.

[0065] In some embodiments, such as Figures 2-4 As shown, the multiple channels 2211 include a first channel 2216 and multiple second channels 2217. In the direction perpendicular to the flow direction, the first channel 2216 is located at the center of the first generator 221, and the multiple second channels 2217 are arranged at intervals around the first channel 2216, so that a large flow stream can be divided into multiple smaller flow streams more evenly, which is beneficial to make full use of each channel 2211 to generate a large number of bubbles in the fluid.

[0066] In some embodiments, such as Figures 2-3 As shown, in a direction perpendicular to the flow direction, multiple second channels 2217 are arranged at uniform intervals around the first channel 2216, so that the fluid can flow more evenly to each channel 2211 and the utilization rate of each channel 2211 is higher.

[0067] The fluid may contain impurities such as contaminant particles, for example, food residue left on tableware 2000, which may clog channel 2211. These impurities are generally located in the middle of the fluid; in some embodiments, such as... Figure 4 As shown, the cross-sectional area of ​​the outlet end of the first section 2212 in the first channel 2216 is larger than the cross-sectional area of ​​the outlet end of the first section 2212 in the second channel 2217. This makes it easier for impurities that may be entrained in the fluid to flow to the first channel 2216 with a larger flow area. The first channel 2216 is less likely to be blocked, which can reduce the risk of blockage of the first generator 221 and improve the working reliability of the first generator 221.

[0068] In some embodiments, channel 2211 is a cylindrical channel, and the diameter of the outlet end of the first section 2212 is 0.5–2 mm. If the diameter of the outlet end of the first section 2212 is too large, the dissolved gas volume of the fluid within the first section 2212 will be too low, resulting in too few bubbles generated by the fluid in the first generator 221. If the diameter is too small, channel 2211 is prone to blockage. Conversely, a diameter of 0.5–2 mm at the outlet end of the first section 2212 helps to prevent blockage and increases the dissolved gas volume of the fluid within the first section 2212, thereby increasing the amount of bubbles generated by the fluid in the first generator 221. Examples of outlet diameters for the first section 2212 include 0.5 mm, 0.6 mm, 0.9 mm, and 2 mm.

[0069] In some embodiments of the present invention, such as Figure 2 As shown, channel 2211 includes a third section 2214, which connects the first section 2212 and the second section 2213. The cross-sectional area of ​​the third section 2214 perpendicular to the flow direction is equal to the cross-sectional area of ​​the outlet end of the first section 2212. This allows the fluid in channel 2211 to continue flowing in the third section 2214, which has a smaller flow area, after passing through the first section 2212. This results in a faster fluid velocity, higher pressure, and a larger dissolved gas volume. As the fluid flows into the second section 2213, more bubbles can be generated, which helps to increase the amount of bubbles generated by the fluid in the first generator 221.

[0070] In some embodiments, such as Figure 2 As shown, the inlet end of the second section 2213 has an annular end face 2215. The annular end face 2215 is perpendicular to the flow direction and extends around the inlet of the second section 2213, which increases the instantaneous flow area when the fluid flows into the second section 2213. This reduces the risk of the fluid generating swirling flow and damaging the channel 2211, thus protecting the first generator 221. It also facilitates the differentiation between the inlet end of the second section 2213 and the upstream outlet end of the second section 2213, allowing workers to manufacture different sections of the channel 2211.

[0071] In some embodiments of the present invention, such as Figure 5 As shown, the blade 2221 extends parallel to the through direction of the channel 2211, making the blade 2221 a DC type, which helps to reduce the manufacturing difficulty of the second generator 222.

[0072] In other embodiments, such as Figure 2 and Figure 6As shown, the extension direction of blade 2221 intersects but is not perpendicular to the penetration direction of channel 2211, making blade 2221 form a swirling flow. In the flow direction of the fluid, the fluid flowing through the initial end of blade 2221 is divided by blade 2221, and after being divided by the initial end of blade 2221, the fluid is more likely to collide with the side surface of blade 2221, which is beneficial to further disperse the bubbles in the fluid into smaller bubbles through the side surface of blade 2221, so that the bubbles generated by the fluid in the second generator 222 are smaller and more numerous.

[0073] In some embodiments of the present invention, such as Figures 2-3 and Figures 5-6 As shown, the second generator 222 includes a blocking part 2222, and a plurality of blades 2221 are arranged at intervals around the blocking part 2222. The blades 2221 and the blocking part 2222 can be an integral part or separate parts.

[0074] By blocking the fluid through the blocking part 2222, the fluid flowing into the second generator 222 first collides with the blocking part 2222, causing the bubbles in the fluid to be dispersed into smaller bubbles. Then, the fluid flows to multiple blades 2221 on the outer periphery of the blocking part 2222. The bubbles are dispersed successively by the blocking part 2222 and the blades 2221, resulting in smaller and more numerous bubbles generated by the fluid in the second generator 222.

[0075] In some embodiments, such as Figures 2-3 and Figure 7 As shown, the bubble generator 22 includes multiple connecting posts 23, which are located between the blocking part 2222 and the first generator 221. The channel 2211, the space between the multiple connecting posts 23, and the space between adjacent blades 2221 are sequentially connected, allowing the fluid flowing out of the channel 2211 to flow into the space between the multiple connecting posts 23 and then into the space between adjacent blades 2221. This prevents the channel 2211 from becoming blocked with the second generator 222, improving the operational reliability of the bubble generator 22. The multiple connecting posts 23 also connect the first generator 221 and the second generator 222, ensuring a secure connection between them.

[0076] In some embodiments of the present invention, such as Figure 2 and Figure 8 As shown, the bubble generator 22 includes a limiting member 24 and a sleeve 25. The first generator 221, the second generator 222, the third generator 223, and the limiting member 24 are sequentially disposed within the sleeve 25, and the first generator 221 is fixedly connected to the sleeve 25. In this application, the fixed connection between the two can include welding or riveting, or it can refer to the two being a single piece.

[0077] The sleeve 25 allows the first generator 221, the second generator 222, and the third generator 223 to be assembled into a single unit, facilitating the sequential flow of fluid through these generators to generate a high concentration of microbubbles. The limiting member 24 can limit the third generator 223, for example, by pressing it tightly against the third generator 223, preventing it from deforming under the impact of the fluid or falling off the sleeve 25, thus ensuring stable bubble generation by the third generator 223.

[0078] In some embodiments, such as Figure 2 As shown, the limiting member 24 has a limiting protrusion 241 on the side facing away from the third generator 223. The limiting protrusion 241 is connected to the sleeve 25. The limiting protrusion 241 can press the limiting member 24 and thus press the third generator 223, making the third generator 223 less prone to deformation or shaking, and making the operation of the third generator 223 more stable.

[0079] In some embodiments, such as Figure 9 As shown, the first generator 221, the second generator 222, the third generator 223, and the limiting member 24 are sequentially arranged inside the sleeve 25, and the limiting member 24 is fixedly connected to the sleeve 25. This facilitates the sequential installation of the third generator 223, the second generator 222, and the first generator 221 into the sleeve 25 along the fluid flow direction. The limiting member 24 limits the three-stage generator (i.e., the first generator 221, the second generator 222, and the third generator 223), making it less likely for the three-stage generator to deform or fall off the sleeve 25 under the impact of the fluid. This makes the operation of the three-stage generator more stable and facilitates the assembly of the three-stage generator into a whole through the sleeve 25.

[0080] In some embodiments, such as Figures 10-11 As shown, the second generator 222, the third generator 223, and the limiting member 24 are sequentially arranged inside the sleeve 25, and the limiting member 24 is fixedly connected to the sleeve 25. This allows the third generator 223 and the second generator 222 to be sequentially installed into the sleeve 25 along the fluid flow direction. The limiting member 24 limits the third generator 223 and the second generator 222, preventing them from deforming or falling off the sleeve 25 under the impact of the fluid, thus making their operation more stable. The first generator 221 is located outside the sleeve 25, making the connection between the first generator 221 and the second generator 222 less constrained by the sleeve 25. This makes the operation of connecting the first generator 221 and the second generator 222 more convenient and reduces the manufacturing difficulty of the bubble generator 22.

[0081] The dishwasher 1000 according to an embodiment of the present invention will now be described with reference to the accompanying drawings.

[0082] like Figures 12-17 As shown, the dishwasher 1000 according to an embodiment of the present invention includes an inner tub 10 and a bubble generator 22 according to an embodiment of the present invention. The inner tub 10 has a washing chamber 11. The bubble water generated by the bubble generator 22 is introduced into the washing chamber 11 to clean the tableware 2000 inside the washing chamber 11. Since the bubble generator 22 according to the embodiment of the present invention has the above-mentioned beneficial technical effects, the dishwasher 1000 according to the embodiment of the present invention, by sequentially generating bubbles in the fluid through the first generator 221, the second generator 222 and the third generator 223, can generate high-concentration microbubbles in the fluid, resulting in a better cleaning effect on the tableware 2000, and reducing the consumption of dishwashing supplies, thus reducing the operating cost.

[0083] In some embodiments of the present invention, such as Figures 12-13 As shown, the inner liner 10 is provided with a water cup 12, which has a cup outlet 121 communicating with the washing chamber 11. The washing chamber 11 is provided with a spray assembly 111. The dishwasher 1000 includes a gas-liquid premixing chamber 21, which is provided with a liquid inlet 212, an air inlet 211 and an outlet 213. The air inlet 211 is used to introduce gas.

[0084] The cup outlet 121 is connected to the liquid inlet 212 through the first flow path 61, so that the liquid in the washing chamber 11 flows into the gas-liquid premixing chamber 21. The gas-liquid premixing chamber 21 is used to mix gas and liquid to obtain a gas-liquid mixed fluid. The bubble generator 22 is located at the outlet 213 and is used to make the gas-liquid mixed fluid into bubble water. The outlet 213 is connected to the washing chamber 11 so that the bubble water produced by the bubble generator 22 is introduced into the washing chamber 11. The cup outlet 121 is connected to the spray assembly 111 through the second flow path 62, so that the liquid in the washing chamber 11 flows to the spray assembly 111.

[0085] The spray assembly 111 may include a spray arm, a spray head, or any other structure that can be used to spray liquid. The spray assembly 111 can spray liquid onto the dishes 2000 in the washing chamber 11 to wash the dishes 2000. The liquid here can be water containing dishwashing supplies, or it can be clean water or other liquids.

[0086] After the liquid in the washing chamber 11 flows out of the cup outlet 121, it can flow into the gas-liquid premixing chamber 21 and the bubble generator 22 through the first flow path 61 to make bubble water and then be introduced back into the washing chamber 11. Alternatively, it can flow into the spray assembly 111 through the second flow path 62 and be sprayed onto the tableware 2000 to re-enter the washing chamber 11, thus realizing the reuse of the liquid in the washing chamber 11, reducing the consumption of water resources and dishwashing supplies, and resulting in lower operating costs.

[0087] Liquid is introduced into the gas-liquid premixing chamber 21 through the liquid inlet 212, and gas is introduced into the gas-liquid premixing chamber 21 through the air inlet 211, so that the gas and liquid are premixed into a gas-liquid mixture in the gas-liquid premixing chamber 21. The gas-liquid mixture is then introduced into the bubble generator 22 at the outlet 213, which shortens the time for the gas and liquid to mix in the bubble generator 22 to generate bubbles, thereby improving the efficiency of the bubble generating device 20 in producing bubble water and making the cleaning efficiency of tableware 2000 higher.

[0088] By reusing the liquid in the washing chamber 11 along the first flow path 61, bubble water can be continuously generated and continuously introduced into the washing chamber 11 throughout the entire washing process of the tableware 2000. Each time bubble water is generated by the bubble generating device 20, the bubble content in the bubble water increases, resulting in a better cleaning effect on the tableware 2000. Combined with the reuse of the liquid in the washing chamber 11 along the second flow path 62, liquid such as bubble water is continuously sprayed onto the tableware 2000 through the spray assembly 111 throughout the entire washing process of the tableware 2000, so as to continuously generate bubble water and wash the tableware 2000 with bubble water. The high bubble content of the liquid in the washing chamber 11 results in a better cleaning effect on the tableware 2000.

[0089] In some embodiments, such as Figures 12-13 As shown, the dishwasher 1000 includes a liquid inlet path 63, which connects a water source and a liquid inlet 212 to supply water to the bubble generator 20. The water source can be an external water source such as tap water from a faucet, or water from a water tank that may be present inside the dishwasher 1000.

[0090] Water is supplied to the bubble generator 20 through the liquid inlet flow path 63, and bubble water can be generated by the bubble generator 20 at the same time as water supply. Bubble water is generated during the water supply stage and directly introduced into the washing chamber 11. Combined with the bubble generator 20 reusing the liquid in the washing chamber 11 to generate bubble water through the first flow path 61 and then introducing it into the washing chamber 11, bubble water can be continuously generated during the water supply stage and the washing cycle stage, resulting in a better cleaning effect on the tableware 2000 in the washing chamber 11.

[0091] In some embodiments of the present invention, such as Figures 12-13 As shown, the dishwasher 1000 includes a drive pump 30 located downstream of the cup outlet 121. The drive pump 30 drives the liquid flowing out of the cup outlet 121 towards the liquid inlet 212 and the spray assembly 111. The drive pump 30 can be a pump or other components used to drive the liquid flow.

[0092] By driving pump 30, the hydraulic pressure can be increased, which facilitates the flow of liquid in washing chamber 11 to inlet 212, where it mixes thoroughly with the gas in bubble generator 20, thus improving the efficiency of bubble generator 20 in producing bubble water. Driving pump 30 can also drive a large amount of liquid to spray assembly 111 to spray onto tableware 2000, reducing the possibility of uneven spraying of tableware 2000 due to insufficient liquid content in spray assembly 111, resulting in better cleaning effect on tableware 2000.

[0093] In some embodiments, such as Figure 12 As shown, the drive pump 30 is a circulation pump 32, and the dishwasher 1000 includes a reversing valve 40. The reversing valve 40 has a valve inlet 41, a first valve outlet 42, and a second valve outlet 43. The circulation pump 32 is connected between the valve inlet 41 and the cup outlet 121. The first valve outlet 42 is connected to the first flow path 61, and the second valve outlet 43 is connected to the second flow path 62. The reversing valve 40 is used to control the conduction state of the first valve outlet 42 and the second valve outlet 43 with the valve inlet 41, respectively.

[0094] The liquid flow is driven by a single circulating pump 32, resulting in fewer pumps, lower cost, and better economic efficiency. Furthermore, the reversing valve 40 allows the circulating pump 32 to independently control the connection status of the first flow path 61 and the second flow path 62 with the cup outlet 121, achieving two different circulation flow states for the liquid in the washing chamber 11 through the first and second flow paths 61 and 62 respectively. For example, connecting the first flow path 61 with the cup outlet 121 increases the hydraulic pressure within it, improving the efficiency of the bubble generator 20 in producing bubble water. Similarly, connecting the second flow path 62 with the cup outlet 121 increases the liquid flow rate within it, ensuring the spray assembly 111 effectively sprays the tableware 2000, thus improving the operational reliability of both the first and second flow paths 61 and 62.

[0095] In some embodiments, such as Figure 13 As shown, the drive pump 30 includes a water pump 31 and a circulation pump 32. The pump inlet of the water pump 31 is connected to the cup outlet 121 of the water cup 12, and the pump inlet of the water pump 31 is connected to the first flow path 61. The pump inlet of the circulation pump 32 is connected to the cup outlet 121 of the water cup 12, and the pump inlet of the circulation pump 32 is connected to the second flow path 62.

[0096] The cup outlet 121 can be one or more openings on the water cup 12. For example, if the cup outlet 121 is one opening on the water cup 12, the opening can be connected to the water pump 31 and the circulation pump 32 through a T-connector. Alternatively, the cup outlet 121 can be two openings on the water cup 12, which can be connected to the water pump 31 and the circulation pump 32 respectively.

[0097] The water pump 31 can drive the liquid in the washing chamber 11 to flow from the cup outlet 121 to the first flow path 61 to control the hydraulic pressure in the first flow path 61. The circulation pump 32 can drive the liquid in the washing chamber 11 to flow from the cup outlet 121 to the second flow path 62 to control the liquid flow rate in the second flow path 62, thereby achieving precise control of the first flow path 61 and the second flow path 62 and making the operation of the first flow path 61 and the second flow path 62 more stable.

[0098] In addition, the water pump 31 and the circulation pump 32 can simultaneously connect the cup outlet 121 with the first flow path 61 and the cup outlet 121 with the second flow path 62, so that bubble water can be generated by the bubble generator 20 and then used to clean the tableware 2000 through the spray assembly 111, thereby improving the cleaning efficiency of the tableware 2000.

[0099] In some embodiments, such as Figures 1-9 and Figure 14 As shown, the outlet 213 is provided with an internal thread, and the bubble generator 22 is provided with an external thread 251. The bubble generator 22 is inserted into the outlet 213, and the internal thread and the external thread 251 are threadedly connected, so that the bubble generator 22 is threadedly connected to the gas-liquid premixing chamber 21. This makes disassembly and assembly convenient and the connection is firm, and it is also convenient for subsequent maintenance or replacement.

[0100] In some embodiments, such as Figures 10-11 and 15- Figure 17 As shown, the bubble generator 22 is inserted into the outlet 213, and the outlet 213 has an inwardly protruding boss 216, which stops downstream of the bubble generator 22. The boss 216 prevents the bubble generator 22 from falling outside the gas-liquid premixing chamber 21 under the impact of the fluid, and the impact of the fluid prevents the bubble generator 22 from falling into the gas-liquid premixing chamber 21. This ensures a reliable connection between the bubble generator 22 and the gas-liquid premixing chamber 21, and the structure is simple and easy to implement.

[0101] In some embodiments, such as Figures 15-17 As shown, a connecting pipe 217 is provided at the outlet 213. The connecting pipe 217 is fixedly connected to the boss 216 and extends away from the bubble generator 22 along the extension direction of the outlet 213 to guide the bubble water generated by the bubble generator 22, so that the bubble water enters the washing chamber 11 through the connecting pipe 217, which facilitates the control of the flow path of the bubble water. For example, the end of the connecting pipe 217 away from the bubble generator 22 can be placed close to the location of the tableware 2000, so that more bubble water flows to the surface of the tableware 2000, resulting in a better cleaning effect on the tableware 2000.

[0102] In some embodiments, such as Figures 15-17 As shown, the outer periphery of the bubble generator 22 and the inner wall of the outlet 213 are interference-fitted, making the connection between the bubble generator 22 and the gas-liquid premixing chamber 21 more secure. It should be noted that... Figures 15-17 The gap shown between the bubble generator 22 and the inner wall of the outlet 213 is for ease of understanding only; in reality, the two are interference fits.

[0103] In some embodiments, a sealing ring is provided upstream of the bubble generator 22, and the sealing ring is snapped between the outer periphery of the bubble generator 22 and the inner wall of the outlet 213, so that the connection between the bubble generator 22 and the gas-liquid premixing chamber 21 is reliable.

[0104] The bubble generator 22 and dishwasher 1000 according to a specific embodiment of the present invention are described in detail below with reference to the accompanying drawings. It is to be understood that the following description is merely illustrative and should not be construed as limiting the invention.

[0105] like Figures 1-3 , Figures 6-8 , Figure 12 and Figure 14 As shown, the dishwasher 1000 according to the first embodiment of the present invention includes a housing 200, a rack 300, an inner tub 10, and a bubble generating device 20.

[0106] The inner liner 10 is located inside the shell 200, and the dish rack 300 is located inside the washing chamber 11 of the inner liner 10. The dish rack 300 is used to place tableware 2000. The washing chamber 11 is equipped with a spray assembly 111. The inner liner 10 is equipped with a water cup 12, which has a cup outlet 121 that communicates with the washing chamber 11.

[0107] A bubble generator 20 is disposed between the housing 200 and the inner liner 10. The bubble generator 20 includes a gas-liquid premixing chamber 21 and a bubble generator 22. The gas-liquid premixing chamber 21 has an outlet 213, an air inlet 211 for introducing gas, and a liquid inlet 212 for introducing liquid. The gas-liquid premixing chamber 21 is used to mix gas and liquid to obtain a gas-liquid mixed fluid, and then introduces the gas-liquid mixed fluid into the bubble generator 22. The bubble generator 22 is connected to the outlet 213 by a threaded connection.

[0108] The outlet 213 of the gas-liquid premixing chamber 21 is provided with an internal thread, and the outer periphery of the bubble generator 22 is provided with an external thread 251. The bubble generator 22 is inserted into the outlet 213 to achieve threaded connection through the internal thread and the external thread 251, which makes disassembly and assembly convenient.

[0109] The outlet 213 is connected to the washing chamber 11, and the bubble generator 22 is used to make gas-liquid mixed fluid into bubble water and then introduce it into the washing chamber 11.

[0110] In the bubble generator 22, the fluid flows generally from left to right. The bubble generator 22 includes a first generator 221, a second generator 222, and a third generator 223 arranged from left to right and connected in sequence. The first generator 221 is provided with a channel 2211, which includes a first section 2212, a third section 2214, and a second section 2213 arranged from left to right and connected in sequence. The cross-sectional area of ​​the first section 2212 perpendicular to the left-right direction gradually decreases from left to right, forming a contraction section. The cross-sectional area of ​​the third section 2214 perpendicular to the left-right direction is equal to the cross-sectional area of ​​the outlet end of the first section 2212. The cross-sectional area of ​​the second section 2213 perpendicular to the left-right direction gradually increases from left to right, forming an expansion end. The inlet end of the second section 2213 has an annular end face 2215, which is perpendicular to the left-right direction and extends inward around the inlet end of the second section 2213.

[0111] Channel 2211 includes a first channel 2216 and four second channels 2217 arranged side by side at intervals. In the direction perpendicular to the left and right direction, the first channel 2216 is located at the center of the first generator 221, and the four second channels 2217 are arranged evenly around the first channel 2216.

[0112] The second generator 222 includes a blocking section 2222 and eight blades 2221, the eight blades 2221 being arranged at intervals around the blocking section 2222, such as... Figure 6 As shown, blade 2221 extends to the left and counterclockwise to form a swirling flow. The third generator 223 is a mesh structure with perforations.

[0113] The bubble generator 22 also includes four connecting posts 23, which are located between the first generator 221 and the second generator 222 to connect the first generator 221 and the second generator 222. The channel 2211, the space between the four connecting posts 23, and the space between adjacent blades 2221 are connected sequentially from left to right.

[0114] The bubble generator 22 also includes a limiting member 24, a limiting protrusion 241, and a sleeve 25. The first generator 221, the second generator 222, the third generator 223, and the limiting member 24 are sequentially disposed within the sleeve 25, and the first generator 221 and the sleeve 25 are integrally formed. During the assembly of the bubble generator 22, the second generator 222, the third generator 223, the limiting member 24, and the limiting protrusion 241 are sequentially inserted into the sleeve 25 from right to left to achieve an interference fit. The limiting member 24 limits the third generator 223, and the limiting protrusion 241 limits the limiting member 24.

[0115] During the process of the dishwasher 1000 cleaning the dishes 2000, water is supplied to the gas-liquid premixing chamber 21 through the liquid inlet flow path 63, and gas is introduced into the gas-liquid premixing chamber 21 through the air inlet 211. The liquid and gas are mixed in the gas-liquid premixing chamber 21 to obtain a gas-liquid mixed fluid. The gas-liquid mixed fluid enters the bubble generator 22 and is made into sparkling water in the bubble generator 22.

[0116] Specifically, in the first generator 221, the gas-liquid mixed fluid flows into the first channel 2216 and the second channel 2217, increases the dissolved gas volume of the fluid through the first section 2212 and the third section 2214, and then releases the fluid through the second section 2213 to generate a large number of bubbles.

[0117] After the fluid from the first generator 221 flows into the second generator 222, it collides with the fluid through the blocking part 2222, causing the bubbles in the fluid to disperse into smaller bubbles. Then the fluid flows to multiple blades 2221 on the outer periphery of the blocking part 2222, which further divide the bubbles into smaller bubbles.

[0118] After the fluid from the second generator 222 flows into the third generator 223, the bubbles are further divided into smaller bubbles by the mesh of the third generator 223. The fluid is sequentially bubble-generated by the first generator 221, the second generator 222, and the third generator 223, producing highly concentrated microbubbles to create sparkling water. The sparkling water enters the washing chamber 11 from the outlet 213 to clean the dishes 2000. The highly concentrated microbubbles in the sparkling water provide a better cleaning effect on the dishes 2000, improving the cleaning capacity of the dishwasher 1000 and reducing dishwashing supplies.

[0119] like Figure 18 As shown, using the bubble generator 22 of the first embodiment of the present invention, through the first generator 221, the second generator 222 and the third generator 223, the fluid can generate an average size (e.g., bubble diameter) of 100-200 nm and a concentration of 1*10. 7 ~9*10 7 The high concentration of microbubbles per ml produces sparkling water with a high concentration of microbubbles, which has a good cleaning effect on tableware.

[0120] like Figure 19As shown, within the same cleaning time, washing tableware 2000 with ordinary water without bubbles resulted in an average removal rate of 59.5% for surface contaminants. However, washing tableware 2000 with bubble water generated by the bubble generator 22 in the first embodiment of this invention resulted in an average removal rate of 67.3%. The bubble water produced in this application demonstrates a superior cleaning effect on tableware 2000. Even though the cleaning time for tableware 2000 with bubble water generated by the bubble generator 22 in the first embodiment of this invention is 10% shorter than that with ordinary water, the average removal rate of surface contaminants by the bubble water generated by the bubble generator 22 in the first embodiment of this invention still reaches 61.1%, indicating that the cleaning effect on tableware 2000 is still superior to that of ordinary water.

[0121] Therefore, the bubble water generated by the bubble generator 22 in the first embodiment of the present invention has a good cleaning effect on the tableware 2000, consumes less dishwashing supplies, and has a good cleaning effect.

[0122] like Figure 4 As shown, the bubble generator 22 and dishwasher 1000 of the second embodiment of the present invention differ from those of the bubble generator 22 and dishwasher 1000 of the first embodiment in that the first channel 2216 includes a first segment 2212 and a second segment 2213, and the second segment 2213 in the first channel 2216 does not have an annular end face 2215. The second channel 2217 includes a first segment 2212, a third segment 2214 and a second segment 2213, and the second segment 2213 in the second channel 2217 has an annular end face 2215. The cross-sectional area of ​​the right end of the first segment 2212 in the first channel 2216 is larger than the cross-sectional area of ​​the right end of the first segment 2212 in the second channel 2217, which can increase the flow area of ​​the first channel 2216 and help reduce the risk of blockage of the first generator 221.

[0123] like Figure 5 As shown, the bubble generator 22 and dishwasher 1000 of the third embodiment of the present invention differ from the bubble generator 22 and dishwasher 1000 of the first embodiment in that the blades 2221 extend in the left and right directions to form a direct current type, which helps to simplify the structure of the second generator 222 and reduce the manufacturing difficulty.

[0124] like Figure 9As shown, the bubble generator 22 and dishwasher 1000 of the fourth embodiment of the present invention differ from the bubble generator 22 and dishwasher 1000 of the first embodiment in that the limiting member 24, the limiting protrusion 241 and the sleeve 25 are integrated. During the assembly of the bubble generator 22, the third generator 223, the second generator 222 and the first generator 221 are inserted into the sleeve 25 from left to right to achieve an interference fit. The fluid in the bubble generator 22 flows from left to right in a general manner, and the impact force of the fluid can make the installation of the third generator 223, the second generator 222 and the first generator 221 in the sleeve 25 more secure and less likely to fall off.

[0125] like Figures 10-11 and Figures 15-16 As shown, the bubble generator 22 and dishwasher 1000 of the fifth embodiment of the present invention differ from those of the bubble generator 22 and dishwasher 1000 of the first embodiment in that the second generator 222, the third generator 223, and the limiting member 24 are sequentially disposed within the sleeve 25, and the limiting member 24 is fixedly connected to the sleeve 25. During the assembly of the bubble generator 22, the third generator 223 and the second generator 222 are sequentially inserted into the sleeve 25 from left to right to achieve an interference fit. The first generator 221 and the second generator 222 are connected by the connecting post 23, which helps to reduce the assembly difficulty of the bubble generator 22.

[0126] The inner wall of outlet 213 has no internal thread, but an inwardly protruding boss 216 is provided inside outlet 213. The boss 216 stops downstream of the bubble generator 22. The bubble generator 22 is inserted into outlet 213 and abuts against the boss 216, achieving an interference fit between the bubble generator 22 and the inner wall of outlet 213. The boss 216 prevents the bubble generator 22 from falling to the right outside the gas-liquid premixing chamber 21 under the impact of the fluid, and also prevents it from falling to the left inside the gas-liquid premixing chamber 21, thus ensuring a secure connection between the bubble generator 22 and the gas-liquid premixing chamber 21.

[0127] like Figure 17 As shown, the bubble generator 22 and dishwasher 1000 of the sixth embodiment of the present invention differ from those of the bubble generator 22 and dishwasher 1000 of the fifth embodiment in that the first generator 221, the second generator 222, the third generator 223 and the limiting member 24 are sequentially disposed within the sleeve 25, and the limiting member 24 is fixedly connected to the sleeve 25. This facilitates the assembly of the first generator 221, the second generator 222 and the third generator 223 into a whole through the sleeve 25, making it difficult for relative movement to occur between the first generator 221, the second generator 222 and the third generator 223, and facilitating the sequential flow of fluid along the first generator 221, the second generator 222 and the third generator 223 to generate high-concentration microbubbles.

[0128] Other configurations and operations of the bubble generator 22 and dishwasher 1000 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0129] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0130] In the description of this specification, the references to terms such as "embodiment," "specific embodiment," and "example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0131] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A bubble generator of a dishwasher, characterized by, The bubble generator comprises: a first generator provided with a channel through which a gas-liquid mixed fluid flows to generate bubbles, the channel comprising a first section and a second section in communication, the first section being upstream of the second section in a flow direction of the gas-liquid mixed fluid, a cross-sectional area of the first section perpendicular to the flow direction gradually decreasing along the flow direction, a cross-sectional area of the second section perpendicular to the flow direction gradually increasing along the flow direction; a second generator downstream of the first generator, the second generator comprising a plurality of blades spaced apart along a circumferential direction of the second generator, the blades being configured to divide the bubbles in the fluid flowing out of the first generator; a third generator downstream of the second generator, the third generator being provided with a mesh configured to divide the bubbles in the fluid flowing out of the second generator. 2.The bubble generator of the dish washer according to claim 1, characterized in that, The channel extends along an arrangement direction of the first generator and the second generator, and a plurality of the channels are spaced apart and arranged side by side. 3.The bubble generator of the dish washer according to claim 2, characterized in that, The plurality of channels comprises a first channel and a plurality of second channels, the first channel being located at a center of the first generator in a direction perpendicular to the flow direction, and the plurality of second channels being arranged around the first channel. 4.The bubble generator of the dish washer according to claim 3, characterized in that, A cross-sectional area of an outlet end of the first section in the first channel is greater than a cross-sectional area of an outlet end of the first section in the second channel. 5.The bubble generator of the dish washer according to claim 1, wherein, The channel comprises a third section in communication with the first section and the second section, and a cross-sectional area of the third section perpendicular to the flow direction is equal to the cross-sectional area of the outlet end of the first section. 6.The bubble generator of the dish washer according to claim 1, wherein, An inlet end of the second section has an annular end face extending around the inlet of the second section and perpendicular to the flow direction. 7.The bubble generator of the dish washer according to claim 1, wherein, The blades extend parallel to a through direction of the channel, or the blades extend in a direction intersecting with and not perpendicular to the through direction of the channel. 8.The bubble generator of the dish washer according to claim 1, wherein, The second generator comprises a blocking portion, and the plurality of blades are arranged around the blocking portion. 9.The bubble generator of the dish washer according to claim 8, wherein, A plurality of connecting columns are arranged between the blocking portion and the first generator, and the channel, spaces between the connecting columns, and spaces between adjacent blades are sequentially in communication. 10.The bubble generator of the dish washer according to claim 1, wherein, The first generator, the second generator, the third generator, and a limiting member are sequentially arranged in a sleeve, and the first generator is fixedly connected with the sleeve; or At least the second generator, the third generator, and the limiting member are sequentially arranged in the sleeve, and the limiting member is fixedly connected with the sleeve.

11. A dishwasher, characterized in that The bubble generator is arranged in a washing machine according to any one of claims 1-10, and the bubble water generated by the bubble generator is used to be introduced into a washing cavity of the washing machine. 12.The dish washer of claim 11, wherein The inner container is provided with a water cup, the water cup has a cup outlet communicated with the washing cavity, the washing cavity is provided with a spraying assembly, the dishwasher comprises a gas-liquid premixing chamber, the gas-liquid premixing chamber is provided with a liquid inlet, a gas inlet and an outlet, the gas inlet is used for introducing gas, wherein, The cup outlet is communicated with the liquid inlet through a first flow path, so that the liquid in the washing cavity flows into the gas-liquid premixing chamber, the gas-liquid premixing chamber is used for mixing the gas and the liquid to obtain a gas-liquid mixed fluid, the bubble generator is arranged at the outlet and is used for making the gas-liquid mixed fluid into bubble water, the outlet is communicated with the washing cavity to introduce the bubble water made by the bubble generator into the washing cavity; the cup outlet is communicated with the spraying assembly through a second flow path, so that the liquid in the washing cavity flows to the spraying assembly. 13.The dish washer of claim 12, wherein The outlet is provided with an internal thread, the bubble generator is provided with an external thread, the bubble generator is inserted into the outlet, and the internal thread is threadedly connected with the external thread; and / or, The bubble generator is inserted into the outlet, the outlet is provided with an inwardly protruding boss, and the boss is stopped downstream of the bubble generator.

Images