Patent Publication Number: US-2020297181-A1

Title: Dishware cleaning method for use with dishwasher

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is the United States National Stage entry under 35 U.S.C. 371 of PCT/CN2018/099803, filed Aug. 10, 2018, which in turn claims the priority of Chinese Patent Application No. 201711145734.9, filed Nov. 17, 2017, the contents of each of which are hereby incorporated by reference in their entirety. 
    
    
     TECHNICAL FIELD 
     The present disclosure relates to the field of dishwashers, and in particular, to a dishware cleaning method for use with a dishwasher. 
     BACKGROUND 
     The household electrization level is continuously increased with the ongoing improvement of Chinese people&#39;s living standard. Currently, various novel domestic electrical devices keep emerging, and are becoming popular at a surprising speed. However, since automatic dishwashers were introduced into China in the 1990s, they have never been a commercial success, and are still hard to popularize so far. 
     Nowadays, domestic dishwashers all use a spray washing mode. However, on one hand, such a spray type dishwasher can hardly wash common Chinese dishware clean due to a spray angle. On the other hand, a cleaning liquid is sprayed to contact dishware for a short time, and as a result the spray type dishwasher has a somewhat unsatisfactory cleaning effect. Moreover, dedicated powdered detergents used in the spray type dishwasher are very expensive, leading to relatively high use costs. In view of this, the spray type dishwasher has never become popular in Chinese families. 
     Commercial dishwashers which clean dishware in a soaking mode have not been adopted for domestic use. In one aspect, due to the adoption of ultrasonic waves, such a soaking type dishwasher has a noise problem and ultrasonic waves may cause potential hazard to the human body. In one aspect, when the dishwasher uses aqueous liquid to clean dishware in a soaking manner, as a lot of grease remains on the surface of the dishware or, in particular, there is much more grease on the dishware due to the Chinese cooking method, after entering water for cleaning along with the dishware, so much grease will float on the surface of the water, producing oil slick on the surface of the water to further stain the dishware. In another aspect, when the dishwasher uses aqueous liquid to clean dishware in a soaking manner, as a lot of food residue is attached on the surface of the dishware, after entering water for cleaning alone with the dishware, the food residue will float in the water, leading to an undesirable cleaning effect. 
     SUMMARY 
     An objective of the present disclosure is to provide a dishware cleaning method for use with a dishwasher, so that the cleaning effect of dishware can be improved. 
     To improve the cleaning effect of dishware, in the dishware cleaning method for use with a dishwasher according to the present disclosure, dishware is first placed in a dish rack of a washing container, and the method subsequently includes the following cyclical steps: 
     1) pouring a washing liquid into the washing container, such that the dishware in the dish rack is soaked in the washing liquid; 
     2) introducing air from the bottom of the washing container to form small air bubbles in the washing liquid; 
     3) enabling the dish rack to linearly reciprocate or rotate to form a vortex to drive the small air bubbles to be evenly distributed in the washing liquid, the vortex enabling the washing liquid containing the small air bubbles to scrub the dishware; 
     4) discharging the washing liquid; 
     wherein, steps 1 to 4 are repeated to perform cyclical washing until the dishware is washed clean to complete a cleaning procedure. 
     As a further improvement of the foregoing technical solution, the interior of the dish rack is divided into a plurality of placement spaces, and some of the placement spaces are set to have adjustable sizes, so that the dishware may be randomly placed in the dish rack having the plurality of placement spaces. 
     As a further improvement of the foregoing technical solution, a floating grease discharger is used to remove floating grease that floats on the surface of the washing liquid in a washing process. 
     As a further improvement of the foregoing technical solution, a continuous filter is used to filter the washing liquid containing floating residue in a washing process. 
     As a further improvement of the foregoing technical solution, a heater is used to heat the washing liquid to 70° C. 
     As a further improvement of the foregoing technical solution, a detergent is added to the washing liquid. 
     As a further improvement of the foregoing technical solution, the number of times of the cyclical washing is at least 3. 
     As a further improvement of the foregoing technical solution, when the dish rack linearly reciprocates, the speed of the dish rack is 20 to 100 times/minute. 
     The beneficial effect of the present disclosure is as follows: In the present disclosure, air is generated in a washing liquid to form small air bubbles, the small air bubbles subsequently rise vertically and reach the surface of dishware, and shock waves generated by the small air bubbles bursting on the surface of the dishware are used to clean the dishware. The dish rack designed to move can ensure sufficient contact between the small air bubbles and the dishware and enable the washing liquid to flow, thereby increasing the scrubbing strength of the washing liquid on the dishware and reducing the adhesive strength of grease on the dishware and achieving a better cleaning effect compared with a dishware washing method of a conventional dishwasher. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In order to more clearly describe the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the accompanying drawings required to be used in the description of the embodiments. Apparently, the described accompanying drawings show only some embodiments rather than all the embodiments of the present disclosure, and those skilled in the art may still achieve other design schemes and accompanying drawings according to these accompanying drawings without making creative efforts. 
         FIG. 1  is a schematic structural diagram of a dishwasher according to a first embodiment; 
         FIG. 2  is a schematic structural diagram of a dishwasher according to a second embodiment; 
         FIG. 3  is a schematic diagram of a first structure of an air bubble generator according to the two embodiments; 
         FIG. 4  is a schematic diagram of a second structure of the air bubble generator according to the two embodiments; 
         FIG. 5  is a schematic diagram of the second structure of the air bubble generator according to the two embodiments; 
         FIG. 6  is a schematic diagram of a first structure of a small air bubble generator according to the first embodiment; 
         FIG. 7  is a schematic diagram of a first structure of a small air bubble generator according to the second embodiment; 
         FIG. 8  is a schematic diagram of a second structure of the small air bubble generator according to the first embodiment; 
         FIG. 9  is a schematic diagram of the second structure of the small air bubble generator according to the second embodiment; 
         FIG. 10  is a front view of a dish rack according to the two embodiments; 
         FIG. 11  is a top view of the dish rack in the first embodiment; 
         FIG. 12  is a top view of the dish rack in the second embodiment; 
         FIG. 13  is a schematic diagram of a movable basket in the two embodiments; 
         FIG. 14  is a front view of a vertical partition according to the two embodiments; 
         FIG. 15  is a top view of the vertical partition according to the two embodiments; 
         FIG. 16  is a schematic diagram of a support frame in the first embodiment; 
         FIG. 17  is a schematic diagram of a support frame in the second embodiment; 
         FIG. 18  is a schematic structural diagram of a driver in the first embodiment; 
         FIG. 19  is a schematic structural diagram of a driver in the second embodiment; 
         FIG. 20  is a schematic structural diagram of a floating grease discharger according to the two embodiments; 
         FIG. 21  is a schematic diagram of a first structure of a suspended water basket of the floating grease discharger according to the two embodiments; 
         FIG. 22  is a schematic diagram of a second structure of the suspended water basket of the floating grease discharger according to the two embodiments; and 
         FIG. 23  is a schematic structural diagram of a filter according to the two embodiments. 
     
    
    
     DETAILED DESCRIPTION 
     In a dishware cleaning method for use with a dishwasher according to the present disclosure, air is generated in a washing container holding a washing liquid, small air bubbles are further formed, and shock waves generated by the small air bubbles bursting on the surface of dishware are used to clean the dishware. Meanwhile, a moving dish rack ensures sufficient contact between the small air bubbles and the dishware and enables the washing liquid to flow, thereby increasing the scrubbing strength of the washing liquid on the dishware and reducing the adhesive strength of grease on the dishware. 
     In the dishware cleaning method for use with a dishwasher, specifically, dishware is first placed in the dish rack of the washing container, and the method subsequently includes the following cyclical steps: 
     1) pouring a washing liquid into the washing container, such that the dishware in the dish rack is soaked in the washing liquid; 
     2) introducing air from the bottom of the washing container to form small air bubbles in the washing liquid; 
     3) enabling the dish rack to linearly reciprocate or rotate to form a vortex to drive the small air bubbles to be evenly distributed in the washing liquid, the vortex enabling the washing liquid containing the small air bubbles to scrub the dishware; 
     4) discharging the washing liquid; 
     wherein, steps 1 to 4 are repeated to perform cyclical washing until the dishware is washed clean to complete the cleaning process. 
       FIG. 1 ,  FIGS. 3 to 6 ,  FIG. 8 ,  FIG. 10 ,  FIG. 11 ,  FIGS. 13 to 16 ,  FIG. 18 , and  FIGS. 20 to 23  show schematic structural diagrams of a dishwasher according to a first embodiment that implements the foregoing dishware washing method. The dishwasher comprises a washing container  1  holding a washing liquid, an air bubble generator  2  for generating air at a bottom wall inside the washing container  1 , a dish rack  3  soaked in the washing liquid, and a driver  4  for driving the dish rack  3  to linearly reciprocate in the washing container  1 , wherein the washing container  1  is cylindrical. 
     In order to implement the foregoing steps of the cyclical washing, a dish rack is optimized. That is, the interior of the dish rack is divided into a plurality of placement spaces, and some of the placement spaces are set to have adjustable sizes, so that a user can randomly place dishware in the dish rack without needing to perform operation in a specified placement manner. According to the cylindrical washing container  1  in the first embodiment, the dish rack is designed to be cylindrical. Referring to  FIG. 10 ,  FIG. 11 , and  FIG. 13  to  FIG. 16 , the dish rack comprises: a movable basket  31 , arranged on one side of the dish rack  3 , wherein a plurality of first placement spaces are arranged inside the movable basket  31 , and the size of each first placement space is adjustable; a fixed basket  32 , arranged in a lower space on the other side of the dish rack  3 , wherein the fixed basket  32  has a top opening, and a plurality of second placement spaces are arranged inside the fixed basket  32 ; and a retractable basket  33 , arranged on the fixed basket  32 , wherein the retractable basket  33  is separable from the fixed basket  32 , and the plurality of third placement spaces are arranged inside the retractable basket  33 . Further, three horizontal partitions  34  are arranged in the movable basket  31 , each horizontal partition  34  is vertically arranged, and each horizontal partition  34  is slidable in the movable basket  31  by means of a sliding mechanism. Two groups of guide rails  35  are arranged on both sides of the top of the movable basket  31 , and two groups of guide rails  35  are arranged on both sides of the bottom of the movable basket  31 . The two upper groups of guide rails  35  correspond to the two lower groups of guide rails  35 . Each group of guide rails  35  is composed of two positioning rods. The two corresponding positioning rods define an insertion groove. Moreover, guide rods for being inserted in the insertion grooves are arranged on the upper edges and lower edges of the horizontal partitions  34 . The four groups of guide rails  35  and the four guide rods constitute the sliding mechanism. Certainly, the sliding mechanism may also be designed to be composed of two slide rods arranged on the top of the movable basket  31 , two slide rods arranged on the bottom, and four sleeves respectively sheathing the slide rods. Each sleeve is fixedly connected to the edge of the horizontal partition  34 . Referring to  FIG. 14  and  FIG. 15 , a detachable vertical partition  36  is arranged between each horizontal partition  34  and an adjacent wall plate. The vertical partition  36  comprises a first vertical partition  366  and a second vertical partition  367 . A transverse slot  363  is arranged in the upper portion of the first vertical partition  366 . A screw rod  364  passing through the slot is arranged on the second vertical partition  367 . A wing nut  365  is screwed on the other end of the screw rod. Relative positions of the first vertical partition  366  and the second vertical partition  367  are adjusted and the wing nut is used for locking, so that the width of the vertical partition can be set according to an actual use of dishware. Two positioning columns  361  are arranged on the lower end surface of each of the first vertical partition  366  and the second vertical partition  367 , and a vertical partition limiting groove that can accommodate the positioning columns  361  is arranged in a bottom wall of the movable basket  31 . Moreover, a fastener  362  is arranged on the upper edge of the end surface of each side of the vertical partition. The inner width of the fastener  362  is slightly greater than the thickness of the horizontal partition  34 . The fastener  362  is used to connect the vertical partition  36  and the horizontal partition  34 . In this way, each horizontal partition  34  and each vertical partition  36  divide the movable basket  31  into a plurality of first placement spaces in which dishes, long-handle cookware and the like can be placed. By designing the detachable vertical partitions  36  with an adjustable width and the horizontal partitions  34  slidable in the movable basket  31 , the range of adjusting the plurality of first placement spaces for accommodation is wide. In the present embodiment, referring to  FIG. 11 , there are a total of thirteen first placement spaces, and there are many optional sizes. A user can further adjust the size of each first placement space by himself according to need. When big dishware needs to be placed inside, the user can remove some or all of the vertical partitions  36  and slide the horizontal partition  34  to one side to form a larger accommodating chamber, so that the big dishware can be placed inside for cleaning, and thereby high adaptability is achieved. Furthermore, at least one lower partition  37  (preferably nine lower partitions  37  in the present embodiment) is arranged inside the fixed basket  32 . The lower partitions  37  are vertically arranged in a staggered manner. The lower partitions  37  divide the fixed basket  32  into twelve second placement spaces. Because the second placement spaces are each independently arranged after being divided by the lower partitions  37 , dishware, such as cups, nursing bottles, and bowls, can be randomly placed in the second placement spaces. The placement method of the present embodiment is that one piece of dishware is placed in each second placement space. In this way, it is not necessary to place dishware in order on the dish rack in a specified manner, and thereby great convenience is achieved. The bottom of the movable basket  31  extends to the bottom of the fixed basket  32 , so that the movable basket  31  and the fixed basket  32  are fixedly connected to form a whole. A support frame  39  in which the retractable basket  33  can be inserted is arranged on the top of the fixed basket  32 . Referring to  FIG. 16 , the support frame  39  comprises a plurality of longitudinal support columns  391  connected to the fixed basket  32  and a transverse support rod  392  connected to each longitudinal support column. Both ends of the transverse support rod  392  after being bent are connected to the upper edge of the outer wall of the movable basket  31 . Referring to  FIG. 13 , a protruding portion  331  that can be inserted in the top opening of the fixed basket  32  is formed on the bottom of the retractable basket  33 . A first extending portion  332  is formed on the upper edge of the outer wall of the retractable basket  33 . The first extending portion  332  can be propped on the transverse support rod  392 . The protruding portion  331  and the first extending portion  332  are both used to prevent the retractable basket  33  from sliding relative to the fixed basket  32 . Furthermore, at least one upper partition  38  (preferably nine upper partitions  38  in the present embodiment) is arranged inside the retractable basket  33 . The upper partitions  38  are vertically arranged in a staggered manner. The upper partitions  38  divide the retractable basket  33  into twelve second placement spaces. Because the second placement spaces are independently arranged after being divided by the upper partitions  38 , dishware, such as cups, nursing bottles, and bowls, can be randomly placed in the second placement spaces. The placement manner of the present embodiment is that one piece of dishware is placed in each second placement space. In this way, it is not necessary to place dishware in order on the dish rack in a specified manner, and thereby great convenience is achieved. During use, the retractable basket  33  can be taken out separately, dishware to be cleaned is placed in the retractable basket  33 , the retractable basket  33  is then placed on the fixed basket  32 , and thereby high flexibility is achieved. Furthermore, a first storage basket  310  and a second storage basket  311  are arranged in an interval space between the movable basket  31  and the retractable basket  33 . A small door is mounted on the sidewall of the first storage basket  310 . The second storage basket  311  has a top opening. A second extending portion is formed on the upper edge of the sidewall of the first storage basket  310 , and a second extending portion is formed on the upper edge of the second storage basket  311 . The first storage basket  310  is used for containing spoons. During use, the first storage basket  310  can be taken out separately, the small door is opened to put in spoons, the small door is closed, and the first storage basket  310  is inserted in the interval between the movable basket  31  and the retractable basket  33 . The second extending portion is used to support the first storage basket  310 . The second storage basket  311  is used to contain chopsticks. During use, chopsticks are directly placed in via the top opening. The bottom wall of the second storage basket  311  is preferably made of plate-shaped stainless steel and provided with drainage holes. Furthermore, the height of the retractable basket  33  being stacked on the fixed basket  32  is equal to that of the movable basket  31 . A foldable cover plate  312  is hinged on one side of the upper edge of the sidewall of the movable basket  31  that is far away from the retractable basket  33 . A bolt  313  is mounted on the cover plate  312 , and a bolt buckle base  314  matching the bolt  313  is mounted on the retractable basket  33 . When the dish rack  3  is used, the cover plate  312  needs to be tightly locked. Preferably, the movable basket  31 , the fixed basket  32 , the retractable basket  33 , the first storage basket  310 , the second storage basket  311 , and the cover plate  312  are formed by welding stainless steel wires or steel wires or by plastic injection molding, and are each shaped like a grid. Preferably, the bottom wall of the movable basket  31 , the bottom wall of the fixed basket  32 , and the bottom wall of the retractable basket  33  are all designed into two layers of steel wire meshes. The gap between the two layers of steel wire meshes may be preferably 5 mm to 20 mm. In this way, a bottom anti-collision area is formed, so that dishware or cookware in the movable basket  31 , the fixed basket  32 , and the retractable basket  33  can be prevented from impact and damage when cleaned by the dishwasher. 
     In addition, referring to  FIG. 3 ,  FIG. 4  or  FIG. 5 , the air bubble generator  2  comprises a small air bubble generator  24  and an air compressor  21  mounted outside the washing container  1 . An air outlet of the small air bubble generator  24  is in communication with a middle lower portion of the washing container  1 . An inlet valve of the small air bubble generator  24  is connected to an air outlet of the air compressor  21  through a first air tube  22 . The air bubble generator  2  can be be used to implement the second step of the foregoing cyclical washing. After air is introduced into the bottom of the washing container  1 , small air bubbles are generated in the washing liquid. Further, referring to  FIG. 3  and  FIG. 5 , in the small air bubble generator  24 , three annular air tubes  241  with inner diameters increased sequentially from the inside to the outside may be designed, and the three annular air tubes  241  are arranged on the same plane. The diameter of the biggest annular air tube  241  is 500 mm, the diameter of the medium annular air tube  241  is 350 mm, the diameter of the smallest annular air tube  241  is 200 mm, and four connecting air tubes  242  are arranged. Each connecting air tube  242  connects the adjacent annular air tubes  241  together. Moreover, the inlet valve of the small air bubble generator  24  is disposed on the annular air tube  241  and/or connecting air tube  242  and is connected to the first air tube  22 . Moreover, all the annular air tubes  241  and connecting air tubes  242  are provided with a plurality of air outlet pores. Alternatively, referring to  FIG. 4  and  FIG. 8 , the small air bubble generator  24  is designed into a plurality of air bubble stones  243 . Each air bubble stone  243  is connected to the inlet valve of the small air bubble generator  24  through an air tube. The air bubble stones  243  are evenly distributed over the bottom wall inside the washing container  1 . In combination with the size of a washing container of a current domestic dishwasher, as shown in  FIG. 8 , in the dishwasher in the first embodiment, the air bubble stones  243  in the small air bubble generator  24  are arranged in three rings. The air bubble stones  243  in each ring are circumferentially and evenly arranged. Further, referring to  FIG. 8 , a support frame  25  for supporting the small air bubble generator is disposed between the small air bubble generators  24  having the two foregoing structures and the bottom wall inside the washing container  1 . The support frame  25  is not drawn in  FIG. 4 . The support frame  25  comprises a plurality of annular rods from the inside to the outside and connecting rods connecting the annular rods. At least three support legs are further disposed on the bottom of the support frame  25 . The support frame  25  is used to keep a certain space between the small air bubble generator  24  and the bottom wall inside the washing container  1 , so that air bubbles generated from the bottom of the small air bubble generator  24  can also rise smoothly to clean dishware. It needs to be noted that the support frame  25  is not shown in the accompanying drawing of the first structure of the small air bubble generator  24  in the present embodiment. That is, the structure of the support frame  25  is not shown in  FIG. 3  and  FIG. 6 . Alternatively, referring to  FIG. 5 , the small air bubble generator  24  may be mounted under the bottom wall outside the washing container  1 , and the small air bubble generator  24  is designed into a flow guide body mounted on the bottom wall outside the washing container  1 . A plurality of flow guide channels in communication with one another are arranged inside the flow guide body. One side of the flow guide body which is connected to the bottom wall outside the washing container  1  is provided with a plurality of air outlet pores. The other end of each air outlet pore is in communication with the flow guide channel. The bottom wall of the washing container  1  is provided with pores in communication with the air outlet pores of the small air bubble generator  24 . The inlet valve of the small air bubble generator  24  is in communication with the flow guide channels. Further, the air compressor  21  is provided with an air flow control valve. The air flow control valve is arranged to adjust the speed of air flow into the first air tube  22  in order to change the number of generated air bubbles and the sizes of the air bubbles, or the air compressor  21  is controlled to open or close to realize a plurality of combinations of continuous air bubble generation and intermittent air bubble generation, thereby achieving a better cleaning effect. Moreover, the first air tube  22  is provided with a one-way cut-off valve  23 , so that the washing liquid inside the washing container  1  can be prevented from entering the air compressor  21  via the small air bubble generator  24  and the first air tube  22 , thereby protecting the air compressor  21  from damage. 
     The rotation of dish rack  3  can implement Step S 4  mentioned above. Referring to  FIG. 18 , the dish rack  3  of the dishwasher in the first embodiment is cylindrical. The dish rack  3  is soaked in the washing liquid. The driver comprises a first motor  41  arranged under the washing container  2  and a reducer  42  connected to the first motor  41 . The output end of the reducer  42  passes through the bottom wall of the washing container  1  and is then connected to the dish rack  3 , and the output rotational speed of the reducer  42  is adjusted to 20 to 100 rotations/minute. Preferably, the outer side surface of the middle lower portion of the outer surface of the sidewall of the dish rack  3  in the present embodiment is provided with a circle of anti-tilting plate  44 . The inner surface of the sidewall of the washing container  1  is provided with two anti-tilting roller components  43  that are circumferentially and evenly distributed. Each anti-tilting roller component  43  comprises a roller base mounted on the inner surface of the sidewall of the washing container  1 , a roller shaft mounted on the roller base, and a roller mounted on the roller shaft. The roller is close to the anti-tilting plate  44 . When the dish rack rotates, if dishware placed in the dish rack is not balanced or the position of dishware changes during rotation, the weight of the dish rack is unevenly distributed, and as a result, the dish rack can easily shake during rotation. The plurality of anti-tilting roller components  43  can effectively limit the deviation of the dish rack. An embodiment in which the linear reciprocation of the dish rack  3  can be realized will be described below. 
     In order to clean dishware more rapidly, the number of times of the cyclical washing should at least be set to be greater than  3 . The first cyclical washing may be considered as rough washing, the second cyclical washing may be considered as fine washing, and subsequent cyclical washing may be considered as rinsing. Certainly, normally used dishware only requires cyclical washing as rinsing once. The washing liquid used in cyclical washing as rough washing is preferably tap water. The washing liquid used in cyclical washing as rough washing should be preferably an aqueous solution containing a detergent. The detergent may be tea seed powder for cleaning, tea leaf powder for cleaning, or the like. The washing liquid used in subsequent cyclical washing as rinsing is tap water. 
     Preferably, a heater  7  is further arranged in the washing container  1 . The heater  7  comprises a heating tube and a temperature controller. The heater  7  is used to heat the washing liquid to preferably 70° C. The washing liquid at 70° C. can adequately reduce the adhesive strength of grease on dishware, achieving a notable cleaning effect, and is particularly suitable for use in the previous two cyclical washing processes as rough washing and fine washing. 
     Moreover, because the washing liquid can bring away a lot of grease and food residue attached on dishware in the process of rough washing and fine washing, in the process of rough washing and fine washing, a floating grease discharger  5  is used to remove oil slick that floats on the surface of the washing liquid in the washing process, and a continuous filter  6  is used to filter the washing liquid containing the floating residue in the washing process. In the third cyclical washing and the subsequent cyclic washing, it may be chosen to use or not to use the floating grease discharger, and certainly, it may also be chosen to use or not to use the continuous filter. 
     Specifically, referring to  FIG. 20  to  FIG. 22 , the floating grease discharger  5  comprises a suspended water basket  52 , a U-shaped tube  53 , a telescopic tube  54  and an oil slick discharge tube  55  that are sequentially connected. A plurality of baffles  521  are disposed at the upper end of the suspended water basket  52 . Each two adjacent baffles  521  define a flow guide opening for oil slick. The height of the flow guide openings is greater than that of a connecting tube and the oil slick discharge tube  55 . The suspended water basket  52  and the U-shaped tube  53  are connected in a clearance fit manner. After being inserted in the U-shaped tube  53 , the lower portion of the suspended water basket  52  can be moved up and down in the U-shaped tube  53 . At the joint between the U-shaped tube  53  and the suspended water basket  52 , the outer diameter of the suspended water basket  52  is slightly less than the inner diameter of the U-shaped tube  53 , and a clearance fit connection manner is used to enable the suspended water basket  52  to freely move. When the U-shaped tube  53  and the suspended water basket  52  are soaked in the washing liquid, the washing liquid flows into the interface between both and forms a water film. The water film seals the joint between the suspended water basket  52  and the U-shaped tube  53  to prevent the washing liquid from being continuously discharged from the joint gap between both to cause waste. It should be noted that the joint between the suspended water basket  52  and the U-shaped tube  53  should be as close to the surface of the washing liquid as possible, preferably 0 mm to 3 mm. Because in this case, the pressure of the water depth still cannot push away the water film at the interface, thereby ensuring sealing. Preferably, referring to  FIG. 22 , when the density of the material adopted by the suspended water basket  52  is excessively high, the buoyancy that the washing liquid exerts on the suspended water basket  52  cannot suspend the suspended water basket  52 . Therefore, a plurality of suspended bodies  522  are further disposed at the upper end of the suspended water basket. The suspended bodies  522  and the baffles  521  are evenly distributed in a staggered manner at the upper end of the suspended water basket. The suspended body  522  comprises a bottom wall, an inner sidewall, a left sidewall, a right sidewall, and an outer wall. The inner sidewall is connected to the upper end of the suspended water basket. The walls of the suspended body define an internal hollow chamber, and the bottom wall of the suspended body bears the buoyancy of the washing liquid, such that the suspended water basket is suspended. 
     Specifically, referring to  FIG. 23 , the continuous filter  6  comprises a water inlet tank  62  and a water outlet tank  63 . The water inlet of the water inlet tank  62  is in communication with the bottom of the chamber of the washing container  1  through a first drain tube  65 . The water inlet of the water inlet tank  62  is in communication with the middle upper portion of the inner chamber of the washing container  1  through a second drain tube  66 . The water outlet tank  63  is connected to the outlet of the water inlet tank  62 . A water pump  612  is arranged in the water outlet tank. The water pump  612  is connected to a water outlet tube  67 . By arranging the two drain tubes, two residue suction openings of the washing container of the dishwasher are formed. The residue suction opening located in the bottom of the chamber of the washing container  1  sucks in the washing liquid containing deposited residue, while the residue suction opening located in the middle upper portion of the chamber of the washing container  1  sucks the washing liquid containing floating residue, and the washing liquid then flows into the water inlet tank  62  and is filtered by a filter unit to remove residue. Further, the water inlet tank  62  is disposed under the washing container  1 , and the highest position of the second drain tube  66  is lower than the water level of the washing liquid inside the washing container  1 . That is, one end of the second drain tube  66  passes through the sidewall of the washing container  1  to be in communication with the interior of the washing container  1 . As the water inlet tank  62  is located under the washing container  1 , the weight of the washing liquid can be utilized. The washing liquid containing residue can freely flow toward the water inlet tank  62  via the first drain tube  65  and the second drain tube  66  and is then filtered by the filter unit. Currently, the filter unit is arranged as two layers of filter meshes, including a rough filter mesh  610  and a fine filter mesh  611  located under rough filter mesh  610 . The filter mesh may be a filter material such as a stainless steel mesh, a plastic mesh or a gauze. Moreover, the other end of the second drain tube  66  is connected to a water level control valve  69 , and the other end of the first drain tube  65  is connected to the water inlet of the water level control valve  69 . The water outlet of the water level control valve  69  is connected to the water inlet of the water inlet tank  62 . That is, the first drain tube  65  and the second drain tube  66  can be controlled by the water level control valve  69  disposed on the water inlet tank  62 . When the water in the water inlet tank  62  reaches a set upper limit value to touch the switch of the water level control valve  69 , closing the passage port of the water level control valve  69 , so that the first drain tube  65  and the second drain tube  66  stop discharging water into the water inlet tank  62  to prevent water in the water inlet tank  62  from overflowing and avoid an excessively small amount of water in the washing container  1 . Preferably, the water inlet tank  62  and the water outlet tank  63  are arranged in a filter tank. A water level control channel  64  is further arranged in the filter tank. The water inlet tank  62  is in communication with the water level control channel  64  through the water outlet of the lower portion of the water inlet tank  62 . The water outlet tank  63  is in communication with the water level control channel  64  through the water inlet opening of the upper portion of the water outlet tank  63 . The water level in the water inlet tank  62  is not lower than that in the water outlet tank  63 . First, the washing liquid flows into the water inlet tank  62 , is filtered by the filter unit to remove residue, then flows to the water level control channel  64  from a flow groove below, and overflows to the water outlet tank  63  from the other side of the water level control channel  64 . As the water inlet tank  62 , the water outlet tank  63 , and the water level control channel  64  are arranged in one filter tank, the structure of the apparatus is more compact and looks better. Preferably, the water pump  612  is provided with a water level control ball valve  613  for controlling the opening and closing states of the water pump  612 . When the water level in the water outlet tank  63  reaches a lower limit value, the ball in the water level control ball valve  613  lowers to close the water pump  612 , protecting the water pump  612  from damage. Preferably, the water outlet end of the water outlet tube  67  is far away from the water suction end of the second drain tube  66 , so that the washing liquid inside the washing container can be driven to flow, thereby further improving the cleaning effect. Preferably, one end of the water outlet tube  67  which is in communication with the washing container  1  is connected to a multi-hole sprayer  68 , and a plurality of streams of water flow sprayed by the multi-hole sprayer  68  can improve the flowability of the washing liquid to improve the cleaning effect. 
       FIGS. 2 to 5 ,  FIG. 7 ,  FIG. 9 ,  FIG. 10 ,  FIGS. 12 to 15 ,  FIG. 17 , and  FIGS. 19 to 23  show a schematic structural diagram of a dishwasher of a second embodiment for implementing the foregoing dishware washing method, and the difference from the first embodiment is as follows: the washing container  1  in the second embodiment is shaped like a hollow cuboid, while the dish rack  3  is shaped like a cuboid. Therefore, a horizontal reciprocation manner is adopted to move the dish rack  3  to increase the contact with a water flow. Moreover, the shapes of the movable basket  31 , the fixed basket  32 , the retractable basket  33 , and the support frame  39  need to be correspondingly adjusted, and there are different numbers of first placement spaces, second placement spaces, and second placement spaces. However, the functions of the horizontal partition  34 , the vertical partition  36 , the lower partition  37  and the upper partition  38  in the dish rack  3  are the same as those in the first embodiment. Further, reference can be made to  FIG. 7  and  FIG. 9  for the structure of the first structure and second structure of the small air bubble generator  24  in the second embodiment in order to adapt to the shape of the washing container  1 . Further, the driver  4  in the second embodiment comprises a second motor  45  arranged outside the washing container  1  and a sinusoidal mechanism connected to the second motor  45 . The sinusoidal mechanism comprises a disk mounted on the output shaft of the second motor  45 , a boss arranged on the edge of the disk, a fork  46  with an opening enclosing the boss, and a horizontal transmission rod  47  perpendicularly connected to the fork  46 . The horizontal transmission rod  47  is connected to the upper portion of the dish rack  3  through a plurality of vertical rods  48 . Further, a pair of support bases  49  are symmetrically arranged on the upper portion of the sidewall of the washing container  1 . Each support base  49  is provided with a bearing hole. The horizontal transmission rod  47  passes through each bearing hole and is freely slidable in the bearing holes. In the technical solution adopting such a structure, the second motor  45  drives the sinusoidal mechanism to move, and the sinusoidal mechanism drives the dish rack to reciprocate in a horizontal direction, so that the adhesive strength of grease on dishware can be reduced. 
     The embodiments of the present disclosure have been described above in detail with reference to the accompanying drawings. However, the present disclosure is not limited to the foregoing embodiments. Within the knowledge of a person of ordinary skill in the art, various changes may further be made without departing from the spirit of the present disclosure.