A dishwasher and a washing control method thereof

Abstract

The application discloses a dishwasher and a cleaning control method thereof. The dishwasher comprises a cleaning chamber, a rotary spray with at least one rotary spray arm rotatable arranged on the bottom surface of the cleaning chamber, and a fixed spray with a first spray pipe arranged on the cavity wall of the cleaning chamber, two openable and closable fixed spray arms connected at both ends of the first spray pipe. The two fixed spray arms spray sheet-shaped intersecting water flow obliquely forward for washing the front side area of the cleaning chamber. The fixed spray is arranged for washing the front side area of the cleaning chamber, ensuring the cleanness of tableware in the area and improving the cleaning rate of the dishwasher. The two fixed spray arms spray sheet-shaped intersecting water flow obliquely forward, so that the front side area of the cleaning chamber is covered and the strength of the water flow is ensured. The fixed spray arms are arranged to be closable, and the opening or closing of the fixed spray arms can be controlled as required.

Description

Technical Field

[0001] This invention belongs to the field of dishwasher technology, specifically relating to a dishwasher and a cleaning control method for the dishwasher. Background Technology

[0002] As living standards improve, people have higher and higher demands for quality of life, leading to increased requirements for the quality, performance, user-friendliness, and intelligent operation of household goods. Dishwashers, as a convenient household appliance, have also entered people's lives. In principle, a dishwasher is a device that uses nozzles to spray high-pressure washing water to clean dishes. A dishwasher generally includes an inner tub forming the cleaning chamber, a dish inlet at the front of the inner tub, a door at the dish inlet, and dish racks and a spray system within the cleaning chamber. To achieve a more ideal cleaning effect, the existing spray system installed in dishwashers is generally a rotatable spray arm with multiple spray holes. The spray arm is rotatably connected to the inner tub body and is connected to the water system. Water in the water system is sprayed out through the spray holes on the spray arm to clean the dishes placed in the inner tub. The sprayer is one of the key components of a dishwasher, directly affecting whether the dishes can be cleaned. The current working principle of the dishwasher sprayer is that the spray arm rotates around an axis. The spray arm mechanism is simple, the spray area is limited, and the dishes can block the spray. The area in front of the inner drum cannot be sprayed. The dishes in the front area of ​​the inner drum cannot be thoroughly cleaned, which affects the washing efficiency and the washing area.

[0003] Chinese Patent Application No. CN201510141696.4 discloses a spray system for a dishwasher with partitioned washing function and a dishwasher. The spray system for a dishwasher with partitioned washing function includes: at least one quick wash zone and two regular wash zones located outside the quick wash zone; each regular wash zone is equipped with a sprayer, and the regular wash zone is covered by the water flow sprayed from its corresponding sprayer. The area covered by the overlapping water flows sprayed from the sprayers of at least two regular wash zones forms the quick wash zone.

[0004] Although the aforementioned existing technologies propose a technical solution to achieve cross-overlapping spraying by setting two rotating spray arms, thereby cleaning tableware, both of these existing technologies have the limitation that the overlapping area is small, and the area on the front side of the inner liner cannot be sprayed.

[0005] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0006] To address the aforementioned problems in the prior art, this invention proposes a dishwasher that uses a fixed spray system to rinse the front area of ​​the inner drum, ensuring the cleanliness of the tableware in that area and improving the dishwasher's cleaning efficiency.

[0007] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0008] A dishwasher, comprising:

[0009] Cleaning room;

[0010] A rotary spray system having at least one rotatable rotary spray arm disposed on the bottom surface of the cleaning chamber;

[0011] A fixed spray system includes a first spray pipe mounted on the wall of the cleaning chamber and two openable and closable fixed spray arms connected to both ends of the first spray pipe.

[0012] A washing pump is used to provide water flow for the rotary spray and the stationary spray;

[0013] The two fixed spray arms spray forward-sloping, sheet-like intersecting streams of water to rinse the front area of ​​the cleaning chamber.

[0014] Furthermore, the fixed spray arm has a fixed arm body forming a fixed arm cavity, a fixed arm water inlet is provided on the rear side of the fixed arm body, and a valve plate that can open and close the fixed arm water inlet is provided in the fixed arm cavity.

[0015] Furthermore, the valve plate is hinged within the fixed arm cavity, and a spring is also provided within the fixed arm cavity to keep the valve plate closed; when the rotational speed of the washing pump is greater than or equal to the set rotational speed, the valve plate rotates open, and the fixed spray arm performs spraying.

[0016] Furthermore, the valve plate has a valve plate body for closing the water inlet, a connecting portion extending rearward along the hinge end of the valve plate body, and a stop portion extending and bent along the connecting portion, with the spring located between the stop portion and the cavity wall of the fixed arm cavity.

[0017] Furthermore, the stop portion and the valve plate body are arranged in parallel.

[0018] Furthermore, the fixed spray arm also has a downwardly protruding spherical surface on the front side of the fixed arm body, and a fixed spray nozzle is provided on the spherical surface.

[0019] Furthermore, the fixed spray nozzle is inclined downward in the forward direction, and the width of the fixed spray nozzle gradually decreases in the upward direction.

[0020] Furthermore, the height of the fixed spray nozzles on the two fixed spray arms is greater on the side that is closer to each other than on the side that is closer to each other.

[0021] Furthermore, the fixed sprayer has a second drainage channel connected to the rotating sprayer, and the fixed sprayer has a second spray pipe connected to the first spray pipe, the second spray pipe being connected to the second drainage channel.

[0022] Based on the dishwasher described above, the present invention also provides a cleaning control method for a dishwasher, which can rinse the front area of ​​the inner tank to ensure the cleanliness of the tableware in that area and improve the cleaning efficiency of the dishwasher.

[0023] A cleaning control method for the above-mentioned dishwasher includes:

[0024] In a conventional spray system, the rotational speed of the washing pump is controlled to be less than the set speed, the rotary sprayer sprays water, and the stationary sprayer is in the off state.

[0025] The entire area is sprayed, and the speed of the washing pump is controlled to be greater than the set speed. Both the rotating spray and the fixed spray are sprayed.

[0026] Furthermore, in the main wash cycle of the dishwasher, the regular spray and the full spray alternate.

[0027] Compared with the prior art, the advantages and positive effects of the present invention are as follows: by setting a fixed spray to rinse the front area of ​​the cleaning chamber, the cleanliness of the tableware in this area is ensured, and the cleaning efficiency of the dishwasher is improved; the two fixed spray arms spray forward-sloping sheet-like intersecting water streams, so that the front area of ​​the cleaning chamber is covered, and it is beneficial to ensure the strength of the water flow; the fixed spray arms are closable, and the opening or closing of the fixed spray arms can be controlled as needed.

[0028] Other features and advantages of the present invention will become clearer after reading the detailed embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of an embodiment of the dishwasher proposed in this invention;

[0031] Figure 2 for Figure 1Exploded structural diagram of the water system;

[0032] Figure 3 for Figure 2 Schematic diagram of the structure of the second waterway installation plate;

[0033] Figure 4 for Figure 2 Schematic diagram of the structure at the installation plate of the third waterway in the middle;

[0034] Figure 5 This is a schematic diagram of the structure after the second waterway mounting plate and the flow bypass plate are installed.

[0035] Figure 6 for Figure 5 Enlarged structural diagram of the middle branch port;

[0036] Figure 7 for Figure 2 Schematic diagram of the structure of washing pumps, etc.;

[0037] Figure 8 for Figure 7 A schematic diagram of the exploded structure;

[0038] Figure 9 for Figure 8 A schematic diagram of the steering wheel structure;

[0039] Figure 10 for Figure 1 Front view structural diagram;

[0040] Figure 11 for Figure 10 Schematic diagram of the cross-sectional structure along the middle AA direction;

[0041] Figure 12 A schematic diagram of the exploded structure of a fixed spray arm;

[0042] Figure 13 for Figure 12 Schematic diagram of the structure of the middle valve plate;

[0043] Figure 14 for Figure 1 A structural diagram from another angle;

[0044] Figure 15 for Figure 14 A magnified structural diagram of region B in the middle;

[0045] Figure 16 for Figure 15 A schematic diagram of the explosion structure at this location;

[0046] Figure 17 for Figure 16 Enlarged structural diagram of the central fixed seat;

[0047] Figure 18 for Figure 16 Enlarged schematic diagram of the end of the greywater pipe;

[0048] Figure 19 for Figure 16 Enlarged structural diagram of the central fixing component;

[0049] Figure 20 for Figure 19 A structural diagram from another angle. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0051] In the description of this invention, it should be noted that the terms "upper," "lower," "left," and "right," etc., indicate the orientation or positional relationship based on the positional relationship shown in the accompanying drawings, with the direction closer to the inner cylinder axis being "inner," and the opposite being "outer." These terms are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0052] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0053] See Figures 1-20This is an embodiment of the dishwasher proposed in this invention. The dishwasher includes: a cleaning chamber 16, a rotating spray, a fixed spray, and a washing pump 20. The rotating spray has two rotating spray arms rotatably disposed on the bottom surface of the cleaning chamber 16. The fixed spray 50 has a first spray water pipe 51 disposed on the cavity wall of the cleaning chamber 16 and two openable and closable fixed spray arms 52 connected to both ends of the first spray water pipe 51. The washing pump 20 is used to provide water flow to the rotating spray and the fixed spray 50. The two fixed spray arms 52 spray forward-inclined sheet-like intersecting water streams, which are used to rinse the front area of ​​the cleaning chamber 16.

[0054] By setting a fixed spray 50 to rinse the front area of ​​the cleaning chamber 16, the cleanliness of the tableware in this area is ensured, and the cleaning efficiency of the dishwasher is improved; and two fixed spray arms 52 spray forward-sloping intersecting sheet-like water jets 53, so that the front area of ​​the cleaning chamber 16 is covered, and the water flow intensity is ensured; the fixed spray arms 52 can be closed, and the opening or closing of the fixed spray arms can be controlled as needed.

[0055] See Figures 11-12 As shown, the fixed spray arm 52 has a fixed arm body 520 forming a fixed arm cavity 521, a fixed arm water inlet 522 opened on the rear side of the fixed arm body 520, a valve plate 523 that can open and close the fixed arm water inlet 522 provided in the fixed arm cavity 521, and an installation cylinder 524 extending rearward along the fixed arm water inlet 522. The fixed spray arm 52 can be opened or closed by setting the valve plate 523. The fixed spray arm 52 is an integral injection molded structure.

[0056] The valve plate 523 can be implemented in various structural forms. In this embodiment, the valve plate 523 is hinged in the fixed arm cavity 521. There is also a spring 525 in the fixed arm cavity 521 to keep the valve plate 523 closed. When the valve plate 523 is in a normally closed state, when the torque exerted by the water in the first spray pipe 5 on the valve plate 523 in the opening direction is greater than the torque exerted by the spring 525 on the valve plate 523 in the closing direction, the valve plate 523 is pushed to rotate, so that the valve plate 523 opens, the spring 525 is compressed, and the spring 525 exerts a force on the valve plate 523 in the closing direction. When the torque exerted by the water in the first spray pipe 51 on the valve plate 523 in the opening direction is less than the torque exerted by the spring 525 on the valve plate 523 in the closing direction, the valve plate 523 is in the open state, and then rotates to close. In other words, an increase in the rotational speed of the washing pump 20 increases the water pressure flowing into the first spray pipe 51, thus increasing the torque exerted by the water in the first spray pipe 51 on the valve plate 523 in the opening direction. When the rotational speed of the washing pump 20 is greater than or equal to the set rotational speed, the valve plate 523 rotates to open, and the fixed spray arm 52 performs spraying. That is, when the rotational speed of the washing pump 20 is the set rotational speed, the torque exerted by the water in the first spray pipe 51 on the valve plate 523 in the opening direction is equal to the torque exerted by the spring 525 on the valve plate 523 in the closing direction. The opening or closing of the fixed spray arm 52 can be controlled by controlling the rotational speed of the washing pump 20. The valve plate spring structure in this embodiment is simple in structure and highly reliable.

[0057] See Figure 13 As shown, the valve plate 523 has a valve plate body 5231 for closing the inlet 522, a connecting portion 5232 extending rearward along the hinge end of the valve plate body 5231, and a stop portion 5233 extending and bent along the connecting portion 5232. A spring 525 is located between the stop portion 5233 and the cavity wall of the fixed arm cavity 521. The connecting portion 5232 is inclined, and the stop portion 5233 and the valve plate body 5231 are arranged parallel to each other.

[0058] The fixed spray arm 52 also has a downwardly protruding spherical surface 526 on the front side of the fixed arm body 520, and a fixed spray nozzle 527 is provided on the spherical surface 526. By setting the fixed spray nozzle 527 on the spherical surface 526, it is beneficial for water reaching the inner side of the spherical surface 526 to be sprayed radially outward from the fixed spray nozzle 527. The fixed spray nozzle 527 is inclined downward in the forward direction, and the width of the fixed spray nozzle 527 gradually decreases in the upward direction, which is beneficial for spraying a sheet-like water flow of uniform thickness in the left and right directions. The height of the fixed spray nozzles 527 on the two fixed spray arms 52 is greater on the side that is closer to each other than on the side that is closer to each other, which is beneficial for forming intersecting sheet-like water flows.

[0059] The fixed spray 50 has a second water channel 15 connected to the rotating spray, and the fixed spray 50 has a second spray water pipe 53 connected to the first spray water pipe 51. The second spray water pipe 53 is connected to the second water channel 15.

[0060] A cleaning control method for the above-mentioned dishwasher includes:

[0061] In normal spraying, the speed of the washing pump 20 is controlled to be lower than the set speed, the rotating sprayer sprays, and the fixed sprayer 50 is in the off state;

[0062] The entire area is sprayed, and the speed of the washing pump 20 is controlled to be greater than the set speed. Both the rotating spray and the fixed spray 50 spray.

[0063] In the preferred setting, regular spray and full spray alternate during the dishwasher's main wash program.

[0064] See Figures 2-9 The water system of the dishwasher in this embodiment is described as follows: a first water system mounting plate 11, a second water system mounting plate 12, and a third water system mounting plate 13 are provided at the bottom of the cabinet 10, arranged vertically. Two water channels are formed between the first water system mounting plate 11 and the second water system mounting plate 12, namely the first water channel 14 and the second water channel 15. The water in the first water channel 14 and the second water channel 15 is sprayed into the cleaning chamber 16 of the cabinet 10. The water sprayed into the cleaning chamber 16 then flows back between the second water system mounting plate 12 and the third water system mounting plate 13, and then enters the washing pump 20 for the next cycle.

[0065] See Figure 3 and Figure 5As shown, a diversion port 121 is provided on the second water channel mounting plate 12. Two outwardly extending arc-shaped diversion plates, namely a first arc-shaped diversion plate 17 and a second arc-shaped diversion plate 18, are provided around the diversion port 121. The first arc-shaped diversion plate 17 and the second arc-shaped diversion plate 18 are evenly arranged around the diversion port 121 to divert the water flowing into the diversion port 121 to the first diversion channel 14 and the second diversion channel 15. The washing pump 20 is used to supply water flow to the diversion port 121. A baffle plate 30 is sealed and installed at the diversion port 121. A baffle port 31 is provided on the baffle plate 30. The baffle port 31 is not coaxial with the diversion port 121. The non-coaxial arrangement of the turbulence outlet 31 and the diversion outlet 121 means that after the water flows out of the turbulence outlet 31, part of the water is guided by the second arc-shaped diversion plate 18 close to the axis of the turbulence outlet 31 and enters the second diversion channel 15; the other part of the water flows outward in the circumference of the turbulence outlet 31 and is then guided by the first arc-shaped diversion plate 17 away from the axis of the turbulence outlet 31 and enters the first diversion channel 14. This reduces the turbulence of the water flow at the diversion outlet 121, and the water flow guided by the first arc-shaped diversion plate 17 first flows outward in the circumference of the turbulence outlet 31, which helps to reduce pressure and slow down the flow velocity, and helps to ensure that the spray intensity of the double spray on the bottom surface is the same, which helps to improve the cleanliness of the cleaning.

[0066] See Figure 6 As shown, a first arc-shaped diversion plate 17 far from the axis C of the turbulence port 31 and a second arc-shaped diversion plate 18 close to the axis of the turbulence port 31 are provided at the diversion port 121. After the water flow guided by the first arc-shaped diversion plate 17 flows outward along the radial direction of the turbulence port 31, the water flow out of the turbulence port 31 flows outward. In order to divert the water in the turbulence port 31 in a timely manner and avoid the formation of a turbulence zone, a turbulence plate 32 extending upward from the diversion port 121 is provided on the turbulence plate 30. The turbulence plate 32 diverts the water flow that flows outward along the radial direction of the turbulence port 31 in a timely manner. The turbulence plate 32 cooperates with the first arc-shaped diversion plate 17 to achieve diversion.

[0067] The baffle plate 32 has a baffle plate body 321 extending outward along the baffle port 31 and a baffle extension 322 extending and bending along the outer end of the baffle plate body 321. The baffle extension 322 is located inside the first arc-shaped diverter plate 17. The outer end of the baffle plate body 321 is located at the end of the first arc-shaped diverter plate 17 near the diversion port 121. The first arc-shaped diverter plate 17 and the second arc-shaped diverter plate 18 are spiral lines extending outward. By providing the baffle plate body 321, the water flow exiting the baffle port 31 is diverted. Preferably, the baffle port 31 and the diversion port 121 are tangentially arranged, and the ratio of the diameter of the diversion port 121 to the diameter of the baffle port 31 is 1.5 to 2.

[0068] The housing 10 has a first drainage channel 14 with its end near the branch outlet 121 and a second drainage channel 15 with its end away from the branch outlet 121. A first arc-shaped branch plate 17 is connected to the first drainage channel 14, and a second arc-shaped branch plate 18 is connected to the second drainage channel 15. The ends of both the first drainage channel 14 and the second drainage channel 15 are spray nozzles located at the bottom of the cleaning chamber 16. Both the ends of the first drainage channel 14 and the second drainage channel 15 are equipped with arc-shaped guide plates.

[0069] See Figures 7-10 As shown, the dishwasher also includes a steering wheel 40, on which a water outlet 41 communicating with the water outlet of the washing pump 20 is provided. A water extension tube 42 extends upward along the edge of the water outlet 41, and the baffle 31 is sealed to the water extension tube 42. A return water outlet 43 is provided on the steering wheel 40, which is connected to the water inlet of the washing pump 20. By setting the steering wheel 40, the water flow from the washing pump 20 can be sprayed out and returned. By setting the washing pump 20 horizontally, it is beneficial to reduce the use of vertical space by the washing pump 20, and the structure is stable and easy to maintain. The steering wheel 40 has a fastening post 44 extending upward for fixing the baffle 30. The baffle 30 is fixed to the fastening post 44 by screws. The fastening post 44 is located outside the water extension tube 42.

[0070] A third water passage mounting plate 13 is provided below the second water passage mounting plate 12, and a steering wheel mounting hole 131 is provided on the third water passage mounting plate 13 to be sealed with the steering wheel 40. A recessed second return water groove 122 is provided on the second water passage mounting plate 122, and a recessed second water cup 123 is provided on the bottom surface of the second return water groove 122. A drain outlet 124 is provided on the groove wall of the second water cup 123. A third return water groove 132 matching the second return water groove 122 and a third water cup 133 matching the second water cup 123 are provided on the third water passage mounting plate 13. An opening matching the second return water groove 122 is provided on the first water passage mounting plate 11. The washing water sprayed into the washing chamber 16 flows through the upper surface of the first water path mounting plate 11, then enters the space between the first water path mounting plate 11 and the second water path mounting plate 12 through the port 112, flows into the second water cup 123, and then flows through the drain port 124 into the third water path mounting plate 13 between the second water path mounting plates 12. Under the pressure of the washing pump 20, the water flowing into the third return water tank 132 flows towards the return water port 43.

[0071] See Figures 14-20 This embodiment describes a water pipe fixing structure 60 for the dishwasher, wherein the drain pump 70 is fixed to the bottom surface of the cabinet 10 by a fixing bracket 72.

[0072] The water pipe fixing structure 60 includes a fixing base 61 and a fixing member 62. The fixing base 61 is fixed on the steering wheel 40, and the fixing member 62 is detachably assembled on the fixing base 61. The fixing base 61 has an arc-shaped first receiving portion 611, and the fixing member 62 has a second receiving portion 621 that matches the first receiving portion 611. The first receiving portion 611 and the second receiving portion 621 are interlocked to fix the water pipe 71. A circumferential limiting structure is provided between the fixing member 62 and the water pipe 71 to limit the rotation of the water pipe 71. By setting the circumferential limiting structure, the circumferential rotation of the water pipe 71 after installation and fixing is prevented, avoiding loosening and leakage of the water pipe, which helps to increase the firmness. In addition, the circumferential limiting structure can play a positioning role when the water pipe 71 is installed, which helps to improve the installation efficiency of the water pipe 71. The fixing base 61 and the detachable fixing member 62 are used to fix the water pipe 71, which helps to increase the firmness of the water pipe 71 after fixing.

[0073] See Figures 17-20 As shown, both the first receiving portion 611 and the second receiving portion 621 are semi-circular. Two parallel protrusions 711 are provided on the water pipe 71, circumferentially arranged. An annular groove 712 is formed between the two protrusions 711 on the water pipe 71, matching the first receiving portion 611 and the second receiving portion 621. Both the first receiving portion 611 and the second receiving portion 621 are located within the annular groove 712. The two protrusions 711 limit the axial movement of the water pipe 71, preventing it from moving axially. Simultaneously, a circumferential limiting structure limits the circumferential rotation of the water pipe 71, ensuring the water pipe fixing structure 60 is securely fixed after installation.

[0074] The fixing member 62 also has an arc-shaped plate 623 located outside the protruding edge 711. The circumferential limiting structure consists of a limiting block 713 on the water pipe 71 and a limiting groove 624 formed on the arc-shaped plate 623. The limiting block 713 matches the limiting groove 624 and is located within the limiting groove 624. By setting the limiting block 713 within the limiting groove 624, the rotation of the water pipe 71 is limited.

[0075] The fixing member 62 also has a connecting plate 622 extending radially outward along both sides of the second receiving portion 621. The outer side of the connecting plate 622 is connected to the arc-shaped plate 623, and the connecting plate 622 is located within the limiting groove 624. The fixing member also has two fixing plates 625 extending radially along both ends of the second receiving portion 621, and fixing holes 6251 are formed on the fixing plates 625. The fixing base 61 also has fixing posts 612 located on the outer sides of both ends of the first receiving portion 611. The fixing posts 612 match the fixing holes 6251, and the fixing plates 625 and fixing posts 612 are fixed by fasteners.

[0076] The fastener 62 also has an extension edge 626 that bends along the edge of the fixing plate 625 and extends away from the fixing seat 61. The extension edge 626 and the fixing plate 625 form a fastener groove, so that the nut of the fastener is located in the fastener groove, avoiding contact with the fastener, which helps to increase the firmness of the fastener 62 and also helps to increase the structural strength of the fastener 62. The extension edge 626 connects with the arc-shaped plate 623, which helps to increase the structural strength.

[0077] The fastener 62 also has an arc-shaped reinforcing plate 627 located outside the second receiving portion 621. The arc-shaped reinforcing plate 627 is arranged parallel to the connecting plate 622. The fastener 62 is an integral injection-molded structure. The fixing seat 61 also has a limiting plate 613 located outside the fixing plate 625. By setting the limiting plate 613, it is beneficial to limit the positioning of the fastener 62 during installation and to restrict the movement of the fastener 62, thereby increasing the firmness of the fastener 62 after it is fixed.

[0078] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by the present invention.

Claims

1. A dishwasher, characterized in that, include: Cleaning room; A rotary spray system having at least one rotatable rotary spray arm disposed on the bottom surface of the cleaning chamber; A fixed spray system includes a first spray pipe mounted on the wall of the cleaning chamber and two openable and closable fixed spray arms connected to both ends of the first spray pipe. A washing pump is used to provide water flow for the rotary spray and the stationary spray; The two fixed spray arms spray forward-sloping, intersecting sheet-like streams of water to rinse the front area of ​​the cleaning chamber; The bottom of the tank is provided with a first water channel mounting plate and a second water channel mounting plate arranged vertically. A diversion port is opened on the second water channel mounting plate. A baffle plate is sealed and installed at the diversion port. A baffle port is opened on the baffle plate. The baffle port and the diversion port are not coaxially arranged. A first arc-shaped diversion plate away from the axis of the baffle port and a second arc-shaped diversion plate close to the axis of the baffle port are provided at the diversion port. A baffle plate extending upward from the diversion port is provided on the baffle plate. The baffle plate is used to divert the water flow that flows radially outward along the baffle port. The baffle plate has a baffle plate body extending outward along the baffle port and a baffle extension portion extending and bending along the outer end of the baffle plate body. The baffle extension portion is located inside the first arc-shaped diversion plate.

2. The dishwasher according to claim 1, characterized in that, The fixed spray arm has a fixed arm body forming a fixed arm cavity, a fixed arm water inlet is provided on the rear side of the fixed arm body, and a valve plate that can open and close the fixed arm water inlet is provided in the fixed arm cavity.

3. The dishwasher according to claim 2, characterized in that, The valve plate is hinged within the cavity of the fixed arm. There is also a spring inside the fixed arm cavity for keeping the valve plate closed; when the speed of the washing pump is greater than or equal to the set speed, the valve plate rotates open, and the fixed spray arm sprays water.

4. The dishwasher according to claim 3, characterized in that, The valve plate has a valve plate body for closing the water inlet, a connecting portion extending rearward along the hinge end of the valve plate body, and a stop portion extending and bent along the connecting portion, with the spring located between the stop portion and the cavity wall of the fixed arm cavity.

5. The dishwasher according to claim 2, characterized in that, The fixed spray arm also has a downwardly protruding spherical surface on the front side of the fixed arm body, and a fixed spray nozzle is provided on the spherical surface.

6. The dishwasher according to claim 5, characterized in that, The fixed spray nozzle is inclined downward in the forward direction, and the width of the fixed spray nozzle gradually decreases in the upward direction.

7. The dishwasher according to claim 6, characterized in that, The height of the fixed spray nozzles on the two fixed spray arms is greater on the side that is closer to each other than on the side that is closer to each other.

8. The dishwasher according to any one of claims 1 to 7, characterized in that, The fixed sprayer has a second drainage channel connected to the rotating sprayer, and the fixed sprayer has a second spray pipe connected to the first spray water pipe, and the second spray water pipe is connected to the second drainage channel.

9. A cleaning control method for a dishwasher as described in any one of claims 1 to 8, characterized in that, include: In a conventional spray system, the rotational speed of the washing pump is controlled to be less than the set speed, the rotary sprayer sprays water, and the stationary sprayer is in the off state. The entire area is sprayed, and the speed of the washing pump is controlled to be greater than the set speed. Both the rotating spray and the stationary spray are applied. Spraying.

10. The cleaning control method according to claim 9, characterized in that, During the dishwasher's main wash cycle, the regular spray and full spray alternate.

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