Dish washing machine and control method

Abstract

The invention discloses a dish-washing machine and a control method, and the dish-washing machine comprises an inner container which is provided with an upper shelf placing area and a lower shelf placing area which are different, and the upper shelf placing area and the lower shelf placing area are respectively an upper-layer shelf placing area and a lower-layer shelf placing area; a first shelf or a second shelf which can be pushed and pulled outwards is arranged in the upper-layer shelf placing area; a second shelf or a first shelf which can be pushed and pulled outwards is arranged in the lower-layer shelf placing area; and the position switching device is arranged on the inner container and drives the shelf to move between the upper-layer shelf placing area and the lower-layer shelf placing area. By means of the arrangement, the positions of the upper shelf and the lower shelf in the inner container of the dish washing machine can be exchanged, and the effect that the positions of the shelves are automatically pushed in or pushed out is achieved; meanwhile, when any shelf is pushed to move, the other shelf can be controlled to move synchronously, the automatic control level of the dish-washing machine is greatly improved, and the intelligence of the dish-washing machine is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of clothing processing equipment, and specifically relates to a dishwasher having at least two layers of shelves, upper and lower; and more particularly to a control method of the above-mentioned dishwasher. Background Art

[0002] In modern life, as people's living standards improve, dishwashers have been adopted by more and more families. In order to adapt to different usage needs, existing dishwashers usually have two layers of shelves. The upper shelf can be pushed and pulled by standing and the dishes to be washed can be placed, while the lower shelf requires users to bend over or even squat to push and pull and place the dishes. If there are too many items to be washed, it may even be necessary to bend over and squat many times to place them, which is very inconvenient. For people with physical disabilities or the elderly, it is even a burden. This is contrary to the original intention of the dishwasher to relieve the heavy housework of washing dishes. Therefore, it has become a technical problem that needs to be solved urgently to propose a dishwasher with an automatic lifting device.

[0003] At the same time, with existing dishwashers, after the user places dishes on the shelves, the user is required to perform corresponding operations on the control panel and make two selections before the dishwasher can be controlled to execute the corresponding control program to wash the dishes placed on the upper shelf, the lower shelf, or the upper and lower shelves. This requires the user to perform a second operation, which is not conducive to the user experience of the dishwasher.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The object of the present invention is to provide a dishwasher and a control method to achieve the purpose of automatically lifting and lowering the upper and lower shelves in the inner tank of the dishwasher; in particular, another object of the present invention is to achieve the purpose of automatically raising the lower shelf of the dishwasher before placing tableware.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A dishwasher comprises: an inner tank having two upper and lower different shelf placement areas, namely an upper shelf placement area and a lower shelf placement area; a first shelf or a second shelf that can be pushed and pulled outward is arranged in the upper shelf placement area; a second shelf or a first shelf that can be pushed and pulled outward is arranged in the lower shelf placement area; and a position switching device is arranged on the inner tank to drive the shelf to move between the upper shelf placement area and the lower shelf placement area.

[0008] Furthermore, an upper slide extending horizontally for placing shelves is provided in the upper shelf placement area, and the shelves in the upper shelf placement area are installed on the upper slide and pushed out horizontally along the upper slide, or pushed in horizontally along the upper slide; a lower slide extending horizontally for placing shelves is provided in the lower shelf placement area, and the shelves in the lower shelf placement area are installed on the lower slide and pushed out horizontally along the lower slide, or pushed in horizontally along the lower slide.

[0009] Furthermore, a horizontally extending upper telescopic push-pull rod is also provided in the upper shelf placement area, one end of which is fixedly connected to the rear side of the inner tank, and the other end of which can be horizontally telescopically telescopically telescopically forward and backward and connected to the shelf arranged in the upper shelf placement area, so as to push the shelf in the upper shelf placement area to be pushed outward along the upper slide, or to be retracted inward along the upper slide; a horizontally extending lower telescopic push-pull rod is also provided in the lower shelf placement area, one end of which is fixedly connected to the rear side of the inner tank, and the other end of which can be horizontally telescopically telescopically telescopically telescopically forward and backward and connected to the shelf arranged in the lower shelf placement area, so as to push the shelf in the lower shelf placement area to be pushed outward along the lower slide, or to be retracted inward along the lower slide.

[0010] Furthermore, the position switching device includes a shelf ascending slide, which is arranged on the rear side of the inner tank and extends in the vertical direction, and the upper and lower ends are respectively connected to the rear sides of the upper slide and the lower slide; the shelf descending slide is arranged on the front side of the inner tank and extends in the vertical direction, and the upper and lower ends are respectively connected to the front sides of the upper slide and the lower slide.

[0011] Furthermore, the position switching device also includes: a front telescopic support rod extending vertically is provided on the front side of the inner container, the lower end of which is connected to the bottom of the inner container, and the upper end of which can be horizontally telescopically telescopic upward and downward and is connected to the shelf support in the push-out position; a rear telescopic support rod extending vertically is provided on the rear side of the inner container, the upper end of which is connected to the top of the inner container, and the lower end of which can be horizontally telescopic upward and downward and is connected to the shelf support in the push-in position.

[0012] Furthermore, the telescopic ends of the upper telescopic push-pull rod and the lower telescopic push-pull rod are respectively provided with a first pressure sensor for detecting whether the shelf is subjected to a push-pull force pushed inward or pulled outward; the telescopic ends of the front telescopic support rod and the telescopic ends of the rear telescopic support rod are respectively provided with a second pressure sensor for detecting whether the shelf is subjected to an upward or downward pushing force.

[0013] Furthermore, the left and right side walls of the inner container are respectively provided with symmetrically arranged slides, and the slides of the two side walls respectively include an upper slide, a shelf ascending slide, a lower slide and a shelf descending slide which are connected end to end in sequence; the first shelf and the second shelf are respectively provided with support parts which protrude correspondingly to the left and right side walls, and the support parts are convex parts which are arranged on the rear side of the shelf side walls and protrude to the left and right sides respectively, and the convex parts on both sides extend into the slides arranged on the opposite side walls of the inner container respectively, so as to limit the movement of the shelves along the slides.

[0014] Furthermore, an upper washing device is provided in the inner tank for washing the tableware placed on the shelves in the upper shelf placement area; and a lower washing device is also provided for washing the tableware placed on the shelves in the lower shelf placement area.

[0015] The present invention also discloses a control method for any of the above-mentioned dishwashers, comprising: when it is detected that a first rack placed in an upper rack placement area in an inner tank and / or a second rack placed in a lower rack placement area are subjected to a pulling force pulled outward, the first rack and / or the second rack in a pushed-in position are automatically pushed outward to a pushed-out position; when it is detected that a first rack placed in an upper rack placement area in an inner tank and / or a second rack placed in a lower rack placement area are subjected to a pushing force pushed inward, the first rack and / or the second rack in a pushed-out position are automatically pushed inward to a pushed-in position.

[0016] Furthermore, when it is detected that the first shelf placed in the upper shelf placement area in the inner container is subjected to a downward pulling force, the first shelf in the push-out position is automatically pulled downward to the lower shelf placement area; simultaneously, the second shelf in the lower shelf placement area and in the push-in position is pulled upward to the upper shelf placement area.

[0017] Furthermore, the process of the dishwasher performing the upper partition washing program is as follows:

[0018] Open the dishwasher;

[0019] It is detected that the first shelf in the upper shelf placement area is subjected to a pulling force, and the first shelf automatically extends outward from the push-in position of the upper shelf placement area to the push-out position of the upper shelf placement area; and the second shelf in the lower shelf placement area is moved upward to the push-in position of the upper shelf placement area;

[0020] The user places the dishes to be washed in the first rack;

[0021] When it is detected that the first shelf in the upper shelf placement area and in the push-out position is pushed inward, the second shelf moves downward to the push-in position of the lower shelf placement area, and the first shelf moves inward to the push-in position of the upper shelf placement area;

[0022] The dishwasher is turned off and the upper zone washing program is started to wash the dishes on the first rack in the upper rack placement area.

[0023] Furthermore, the process of the dishwasher performing the lower layer partition washing program is as follows:

[0024] Open the dishwasher;

[0025] It is detected that the first shelf in the upper shelf placement area is subjected to a pulling force, and the first shelf automatically extends outward from the push-in position of the upper shelf placement area to the push-out position of the upper shelf placement area; and the second shelf in the lower shelf placement area is moved upward to the push-in position of the upper shelf placement area;

[0026] The user places the dishes to be washed in the first rack;

[0027] When it is detected that the first shelf in the upper shelf placement area and in the push-out position is subjected to a downward pulling force, the first shelf is moved downward to the push-out position of the lower shelf placement area, and then the first shelf is moved inward to the push-in position of the lower shelf placement area;

[0028] The dishwasher is turned off and the lower zone washing program is started to wash the dishes on the first rack in the lower rack placement area.

[0029] Further, the process of the dishwasher performing the full wash program is as follows:

[0030] Open the dishwasher;

[0031] It is detected that the first shelf in the upper shelf placement area is subjected to a pulling force, and the first shelf automatically extends outward from the push-in position of the upper shelf placement area to the push-out position of the upper shelf placement area; and the second shelf in the lower shelf placement area is moved upward to the push-in position of the upper shelf placement area;

[0032] The user places the dishes to be washed in the first rack;

[0033] When it is detected that the first shelf in the upper shelf placement area and in the push-out position is subjected to a downward pulling force, the first shelf is moved downward to the push-out position of the lower shelf placement area, and then the first shelf is moved inward to the push-in position of the lower shelf placement area;

[0034] When it is detected that the second shelf in the push-in position in the upper shelf placement area is subjected to a pulling force, the second shelf automatically extends outward from the push-in position in the upper shelf placement area to the push-out position in the upper shelf placement area;

[0035] The user places the dishes to be washed in the first rack;

[0036] When it is detected that the second shelf in the upper shelf placement area and in the push-out position is subjected to an inward push force, the second shelf moves inward to the push-in position of the upper shelf placement area; or, when it is detected that the second shelf in the upper shelf placement area and in the push-out position is subjected to a downward push force, the second shelf moves downward to the push-out position of the lower shelf placement area, and after the first shelf moves upward to the push-in position of the upper shelf placement area, the second shelf is moved inward to the push-in position of the lower shelf placement area;

[0037] Turn off the dishwasher and start the full wash program to wash all the dishes on the first and second racks.

[0038] The present invention has at least the following beneficial effects:

[0039] Through the above arrangement, the upper and lower shelves in the inner tank of the dishwasher can be swapped, so that the shelf position can be automatically pushed in or out; at the same time, when any shelf is moved, the other shelf can be controlled to move synchronously, which greatly improves the automation control level of the dishwasher and improves the intelligence of the dishwasher.

[0040] Furthermore, the present invention uses the above method to enable the upper and lower shelves to switch positions synchronously, thereby achieving a significant technical advancement in that only the dishwasher operation mode can be selected by detecting and identifying the movement of the shelves.

[0041] At the same time, the invention has a simple structure, a concise method, and a significant effect, and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figures 1 to 3 Schematic diagram of the structure corresponding to different use states of the dishwasher in the embodiment of the present invention;

[0043] Figure 4 4 is a control flow chart of a dishwasher in an embodiment of the present invention.

[0044] Brief introduction of main components in the figure:

[0045] 1. Inner tank; 101. Upper shelf placement area; 102. Lower shelf placement area; 2. Shelves; 21. First shelf; 22. Second shelf; 3. Washing device; 31. Upper spray arm; 32. Lower spray arm; 4. Slide; 41. Upper slide; 42. Lower slide; 43. Shelf descending slide; 44. Shelf ascending slide; 5. Support part; 6. Telescopic push-pull rod; 61. Upper telescopic push-pull rod; 62. Lower telescopic push-pull rod; 7. Telescopic support rod; 71. Front telescopic support rod; 72. Rear telescopic support rod. DETAILED DESCRIPTION

[0046] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that the following embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0047] In the description of the present invention, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0048] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0049] like Figures 1 to 4 As shown, an embodiment of the present invention introduces a dishwasher, including: an inner tank 1, having two different upper and lower shelf placement areas, namely an upper shelf placement area 101 and a lower shelf placement area 102; a shelf 2 that can be pushed and pulled outward is provided in the upper shelf placement area 101, and the shelf 2 can be a first shelf 21 or a second shelf 22; a shelf 2 that can be pushed and pulled outward is provided in the lower shelf placement area 102, and the shelf 2 can be a relative second shelf 22 or the first shelf 21; a position switching device is provided on the inner tank 1, driving the shelf 2 to move between the upper shelf placement area 101 and the lower shelf placement area 102.

[0050] Through the above arrangement, the upper and lower racks 2 in the inner tank 1 of the dishwasher can be swapped, so that the racks 2 can be automatically pushed in or out. At the same time, when any rack 2 is moved, the other rack 2 can be controlled to move synchronously, which greatly improves the automation control level of the dishwasher and improves the intelligence of the dishwasher.

[0051] In the embodiment of the present invention, the dishwasher can be a drawer-type dishwasher with an opening on the front side of the inner tank 1, or a sink-type dishwasher with an opening on the top side of the inner tank 1, etc., and only after the machine door set at the opening on one side of the inner tank 1 of the dishwasher is opened, the upper and lower racks 2 are pushed to move synchronously, so that the positions of different racks 2 can be switched and the dishes on different racks 2 can be washed accordingly. In the embodiment of the present invention, for the convenience of description, the following discussion is based on the example of a drawer-type dishwasher:

[0052] like Figures 1 to 3As shown, in the embodiment of the present invention, an upper slide 41 extending horizontally for placing the shelf 2 is provided in the upper shelf placement area 101, and the shelf 2 arranged in the upper shelf placement area 101 is installed on the upper slide 41, and is pushed outward horizontally along the upper slide 41, or is pushed inward horizontally; a lower slide 42 extending horizontally for placing the shelf 2 is provided in the lower shelf placement area 102, and the shelf 2 arranged in the lower shelf placement area 102 is installed on the lower slide 42, and is pushed outward horizontally along the lower slide 42, or is pushed inward horizontally.

[0053] In the embodiment of the present invention, a telescopic push-pull rod 6 is installed in the inner container 1, which is used to push the shelf 2 to move telescopically in the front-back direction. A telescopic push-pull rod 6 extending horizontally is also provided in the upper shelf placement area 101; an upper telescopic push-pull rod 61, one end of which is fixedly connected to the rear side of the inner container 1, and the other end of which can be horizontally extended in the front-back direction and connected to the shelf 2 in the upper shelf placement area 101, is used to push the shelf 2 in the upper shelf placement area 101 to be pushed outward along the upper slide 41, or to be retracted inward along the upper slide 41; a lower telescopic push-pull rod 62 extending horizontally is also provided in the lower shelf placement area 102, one end of which is fixedly connected to the rear side of the inner container 1, and the other end of which can be horizontally extended in the front-back direction and connected to the shelf 2 in the lower shelf placement area 102, is used to push the shelf 2 in the lower shelf placement area 102 to be pushed outward along the lower slide 42, or to be retracted inward along the lower slide 42. In the embodiment of the present invention, the telescopic push-pull rod 6 can be a hydraulic rod, a pneumatic rod, etc. composed of a multi-section telescopic sleeve; of course, it can also be a telescopic rod that can be automatically extended or shortened based on other principles. The telescopic end of the telescopic push-pull rod 6 is provided with a lock hook that can be automatically locked or unlocked with the shelf 2, which is used to controllably lock the telescopic push-pull rod 6 and the shelf 2, so that the locked telescopic push-pull rod 6 can push the shelf 2 to be synchronously extended and retracted, and can also adjust the shelf 2 up and down after being unlocked.

[0054] In an embodiment of the present invention, the position switching device also includes a shelf ascending slide 44, which is arranged on the rear side of the inner tank 1 and extends in the vertical direction, and the upper and lower ends are respectively connected to the rear sides of the upper slide 41 and the lower slide 42; a shelf descending slide 43, which is arranged on the front side of the inner tank 1 and extends in the vertical direction, and the upper and lower ends are respectively connected to the front sides of the upper slide 41 and the lower slide 42.

[0055] In the embodiment of the present invention, the position switching device also includes: a telescopic support rod extending vertically up and down provided in the inner container 1, which is used to push the shelf to switch and move between the upper shelf placement area 101 and the lower shelf placement area 102; a front telescopic support rod 71 extending vertically is provided on the front side, the lower end of which is connected to the bottom of the inner container 1, and the upper end of which can be horizontally telescopically telescopically upward and downward and connected to the shelf 2 support in the push-out position; a rear telescopic support rod 72 extending vertically is provided on the rear side of the inner container 1, the upper end of which is connected to the top of the inner container 1, and the lower end of which can be horizontally telescopically telescopically telescopically upward and downward and connected to the shelf 2 support in the push-in position. In the embodiment of the present invention, the telescopic support rod 7 can also be a hydraulic rod, a pneumatic rod, etc. composed of a multi-section telescopic sleeve; of course, it can also be a telescopic rod composed of other principles that can automatically extend or shorten. The telescopic end of the telescopic support rod 7 is also provided with a lock hook that can be automatically locked or unlocked with the shelf 2, which is used to controllably lock the telescopic support rod 7 and the shelf 2, so that the locked telescopic support rod 7 can push the shelf 2 to be synchronously extended and retracted, and can also adjust the shelf 2 up and down after being unlocked.

[0056] In the embodiment of the present invention, the left and right side walls of the inner container 1 are respectively provided with symmetrically arranged slides 4, and the slides 4 of the two side walls respectively include an upper slide 41, a shelf ascending slide 44, a lower slide 42 and a shelf descending slide 43 which are connected end to end in sequence; the first shelf 21 and the second shelf 22 are respectively provided with support parts 5 which protrude correspondingly to the left and right side walls, and the support parts 5 are convex parts which are arranged on the rear side of the side walls of the shelf 2 and protrude to the left and right sides respectively, and the convex parts on both sides extend into the slides 4 provided on the opposite side walls of the inner container respectively, so as to limit the movement of the shelf 2 along the slides 4. Preferably, in order to improve the smoothness of movement of the shelf 2 in the slide 4, pulleys are respectively provided on the support part 5, and the pulleys whose axes extend horizontally along the left and right directions of the inner tank are correspondingly inserted into the slides 4 on the corresponding sides, so that the shelf 2 can slide smoothly along the slide 4; further preferably, the upper and lower slides 41, 42 are grooved slides with limiting side walls on the upper and lower sides, and the shelf rising slide 44 and the shelf descending slide 43 are grooved slides with limiting side walls on the front and back, so that after the support part 5 is correspondingly inserted into the slide 4, it receives limiting forces in two opposite directions along the vertical direction of the extension direction of the slide, effectively preventing the support part 5 from falling off from the slide 4.

[0057] Preferably, in order to avoid mutual interference during the movement of the shelves 2, the width dimension of the front-to-back direction of the first shelf 21 and the second shelf 22 can be smaller than the length of the upper slide 41 and the lower slide 42 in the front-to-back direction, and the height dimension of the upper and lower directions of the first shelf 21 and the second shelf 22 can be smaller than half of the length of the shelf ascending slide 44 and the shelf descending slide 43 in the front-to-back direction.

[0058] In the embodiment of the present invention, the telescopic end of the upper telescopic push-pull rod 61 and the telescopic end of the lower telescopic push-pull rod 62 are respectively provided with a first pressure sensor for detecting whether the shelf 2 is subjected to a push-pull force pushed inward or pulled outward; the telescopic end of the front telescopic support rod 71 and the telescopic end of the rear telescopic support rod 72 are respectively provided with a second pressure sensor for detecting whether the shelf 2 is subjected to an upward or downward pushing force.

[0059] In the embodiment of the present invention, a washing device 3 is provided in the inner tank 1; the washing device 3 includes an upper washing device for washing tableware placed on the shelf 2 in the upper shelf placement area 101; and a lower washing device for washing tableware placed on the shelf 2 in the lower shelf placement area 102. The upper washing device at least includes an upper spray arm 31 arranged at the top of the inner tank 1; the lower washing device at least includes a lower spray arm 32 arranged at the bottom of the inner tank 1, and the upper and lower spray arms 31, 32 are connected to the washing water supply structure of the dishwasher in a controllable on-off manner, and are used to controllably supply washing water to the upper and lower spray arms 31, 32 separately or simultaneously, so that the upper and lower spray arms 31, 32 spray washing water outward separately or simultaneously, and the upper spray arm 31 is used to spray washing water alone to execute an upper partition washing program for washing the upper shelf, and the lower spray arm 32 is used to spray washing water alone to execute a lower partition washing program for washing the lower shelf, or the upper and lower spray arms 31, 32 are used to spray washing water at the same time to execute a comprehensive washing program for washing the upper shelf and the lower shelf at the same time.

[0060] like Figure 4 As shown, the embodiment of the present invention also introduces a control method applied to the above dishwasher, including:

[0061] When it is detected that the first shelf 21 placed in the upper shelf placement area 101 in the inner container 1 and / or the second shelf 22 placed in the lower shelf placement area 102 are subjected to an outward pulling force, the first shelf 21 and / or the second shelf 22 in the pushed-in position are automatically pushed outward to the pushed-out position; when it is detected that the first shelf 21 placed in the upper shelf placement area 101 in the inner container 1 and / or the second shelf 22 placed in the lower shelf placement area 102 are subjected to an inward pushing force, the first shelf 21 and / or the second shelf 22 in the pushed-out position are automatically pushed inward to the pushed-in position.

[0062] Through the above method, the upper and lower shelves can be switched and moved synchronously, thereby achieving a significant technical advancement of using shelf movement detection and recognition to select only the dishwasher working mode.

[0063] In the embodiment of the present invention, the control method of the dishwasher further includes: when it is detected that the first rack 21 placed in the upper rack placement area 101 in the inner tank 1 is subjected to a downward pulling force, the first rack 21 in the push-out position is automatically pulled downward to the lower rack placement area 102; and simultaneously, the second rack 22 in the lower rack placement area 102 and in the push-in position is pulled upward to the upper rack placement area 101.

[0064] like Figure 4 As shown, in the embodiment of the present invention, the dishwasher has at least an upper layer partition washing program, a lower layer partition washing program and a full washing program, and the control methods for respectively executing the above three programs are as follows:

[0065] A. The process of the dishwasher executing the upper partition washing program is as follows:

[0066] Open the dishwasher;

[0067] It is detected that the first shelf 21 in the upper shelf placement area 101 is subjected to a pulling force pulled outward, and the first shelf 21 automatically extends outward from the push-in position of the upper shelf placement area 101 to the push-out position of the upper shelf placement area 101; and the second shelf 22 in the lower shelf placement area 102 is moved upward to the push-in position of the upper shelf placement area 101;

[0068] The user places dishes to be washed in the first rack 21;

[0069] When it is detected that the first shelf 21 in the push-out position in the upper shelf placement area 101 is pushed inward, the second shelf 22 moves downward to the push-in position of the lower shelf placement area 102, and the first shelf 21 moves inward to the push-in position of the upper shelf placement area 101;

[0070] The dishwasher is turned off and the upper partition washing program is started to wash the dishes on the first rack 21 in the upper rack placement area 101 .

[0071] B. The process of the dishwasher executing the lower-layer partition washing program is as follows:

[0072] Open the dishwasher;

[0073] It is detected that the first shelf 21 in the upper shelf placement area 101 is subjected to a pulling force pulled outward, and the first shelf 21 automatically extends outward from the push-in position of the upper shelf placement area 101 to the push-out position of the upper shelf placement area 101; and the second shelf 22 in the lower shelf placement area 102 is moved upward to the push-in position of the upper shelf placement area 101;

[0074] The user places dishes to be washed in the first rack 21;

[0075] When it is detected that the first shelf 21 in the upper shelf placement area 101 and in the push-out position is subjected to a downward pulling force, the first shelf 21 moves downward to the push-out position of the lower shelf placement area 102, and then moves the first shelf 21 inward to the push-in position of the lower shelf placement area 102;

[0076] The dishwasher is turned off and the lower partition washing program is started to wash the dishes on the first rack 21 in the lower rack placement area 102 .

[0077] C. The process of the dishwasher performing a full wash program is as follows:

[0078] Open the dishwasher;

[0079] It is detected that the first shelf 21 in the upper shelf placement area 101 is subjected to a pulling force pulled outward, and the first shelf 21 automatically extends outward from the push-in position of the upper shelf placement area 101 to the push-out position of the upper shelf placement area 101; and the second shelf 22 in the lower shelf placement area 102 is moved upward to the push-in position of the upper shelf placement area 101;

[0080] The user places dishes to be washed in the first rack 21;

[0081] When it is detected that the first shelf 21 in the upper shelf placement area 101 and in the push-out position is subjected to a downward pulling force, the first shelf 21 moves downward to the push-out position of the lower shelf placement area 102, and then moves the first shelf 21 inward to the push-in position of the lower shelf placement area 102;

[0082] When it is detected that the second shelf 22 in the push-in position in the upper shelf placement area 101 is subjected to a pulling force, the second shelf 22 automatically extends outward from the push-in position of the upper shelf placement area 101 to the push-out position of the upper shelf placement area 101;

[0083] The user places dishes to be washed in the first rack 21;

[0084] When it is detected that the second shelf 22 in the upper shelf placement area 101 and in the push-out position is subjected to an inward thrust, the second shelf 22 moves inward to the push-in position of the upper shelf placement area 101; or, when it is detected that the second shelf 22 in the upper shelf placement area 101 and in the push-out position is subjected to a downward thrust, the second shelf 22 moves downward to the push-out position of the lower shelf placement area 102, and after the first shelf 21 moves upward to the push-in position of the upper shelf placement area 101, the second shelf 22 moves inward to the push-in position of the lower shelf placement area 102;

[0085] The dishwasher is turned off and a comprehensive washing program is started to wash all the dishes on the first rack 21 and the second rack 22 .

[0086] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A dishwasher, comprising: The inner tank has two different shelf placement areas, namely an upper shelf placement area and a lower shelf placement area; Features: The upper shelf placement area is provided with a first shelf or a second shelf that can be pushed and pulled outwards; A second shelf or a first shelf that can be pushed and pulled outward is provided in the lower shelf placement area; The position switching device is arranged on the inner container and drives the shelf to move between the upper shelf placement area and the lower shelf placement area.

2. A dishwasher according to claim 1, characterized in that: The upper shelf placement area is provided with an upper slideway extending horizontally for placing shelves, and the shelves in the upper shelf placement area are installed on the upper slideway and pushed out horizontally outward along the upper slideway, or pushed in horizontally inward; the lower shelf placement area is provided with a lower slideway extending horizontally for placing shelves, and the shelves in the lower shelf placement area are installed on the lower slideway and pushed out horizontally outward along the lower slideway, or pushed in horizontally inward; Preferably, a horizontally extending upper telescopic push-pull rod is also provided in the upper shelf placement area, one end of which is fixedly connected to the rear side of the inner tank, and the other end of which can be horizontally telescopically telescopically telescopically forwards and backwards to connect with the shelf arranged in the upper shelf placement area, for pushing the shelf in the upper shelf placement area to be pushed outward along the upper slide, or retracted inward along the upper slide; a horizontally extending lower telescopic push-pull rod is also provided in the lower shelf placement area, one end of which is fixedly connected to the rear side of the inner tank, and the other end of which can be horizontally telescopically telescopically telescopically telescopically forwards and backwards to connect with the shelf arranged in the lower shelf placement area, for pushing the shelf in the lower shelf placement area to be pushed outward along the lower slide, or retracted inward along the lower slide.

3. A dishwasher according to claim 2, characterized in that: The position switching device includes a shelf ascending slide, which is arranged at the rear side of the inner container and extends in the vertical direction, and the upper and lower ends are respectively connected to the rear sides of the upper slide and the lower slide; the shelf descending slide is arranged at the front side of the inner container and extends in the vertical direction, and the upper and lower ends are respectively connected to the front sides of the upper slide and the lower slide; Preferably, the position switching device also includes: a front telescopic support rod extending vertically is provided on the front side of the inner container, the lower end of which is connected to the bottom of the inner container, and the upper end of which can be horizontally telescopic upward and downward and is connected to the shelf support in the push-out position; a rear telescopic support rod extending vertically is provided on the rear side of the inner container, the upper end of which is connected to the top of the inner container, and the lower end of which can be horizontally telescopic upward and downward and is connected to the shelf support in the push-in position.

4. A dishwasher according to claim 3, characterized in that: The telescopic end of the upper telescopic push-pull rod and the telescopic end of the lower telescopic push-pull rod are respectively provided with a first pressure sensor for detecting whether the shelf is subjected to an inward pushing force or an outward pulling force; The telescopic end of the front telescopic support rod and the telescopic end of the rear telescopic support rod are respectively provided with a second pressure sensor for detecting whether the shelf is subjected to an upward or downward thrust.

5. A dishwasher according to any one of claims 1 to 4, characterized in that: The left and right side walls of the inner container are respectively provided with slides arranged symmetrically, and the slides of the two side walls respectively include an upper slide, a shelf ascending slide, a lower slide and a shelf descending slide which are sequentially connected end to end; the first shelf and the second shelf are respectively provided with support parts protruding toward the left and right side walls respectively, and the support parts are convex parts provided at the rear side of the shelf side walls and protruding toward the left and right sides respectively, and the convex parts on both sides extend into the slides provided on the opposite side walls of the inner container respectively, so as to limit the movement of the shelves along the slides; Preferably, an upper washing device is provided in the inner tank for washing the tableware placed on the shelves in the upper shelf placement area; and a lower washing device is also provided for washing the tableware placed on the shelves in the lower shelf placement area.

6. A method for controlling a dishwasher according to any one of claims 1 to 5, characterized in that: When it is detected that the first shelf placed in the upper shelf placement area in the inner container and / or the second shelf placed in the lower shelf placement area are subjected to a pulling force pulled outward, the first shelf and / or the second shelf in the pushed-in position are automatically pushed outward to the pushed-out position; When it is detected that the first shelf placed in the upper shelf placement area in the inner container and / or the second shelf placed in the lower shelf placement area are pushed inward, the first shelf and / or the second shelf in the push-out position are automatically pushed inward to the push-in position.

7. A method for controlling a dishwasher according to claim 6, characterized in that: When it is detected that the first shelf placed in the upper shelf placement area in the inner container is subjected to a downward pulling force, the first shelf in the push-out position is automatically pulled downward to the lower shelf placement area; At the same time, the second shelf in the push-in position in the lower shelf placement area is pulled upward to the upper shelf placement area.

8. A method for controlling a dishwasher according to claim 7, characterized in that: The process of the dishwasher performing the upper zone washing program is as follows: Open the dishwasher; It is detected that the first shelf in the upper shelf placement area is subjected to a pulling force, and the first shelf automatically extends outward from the push-in position of the upper shelf placement area to the push-out position of the upper shelf placement area; and the second shelf in the lower shelf placement area is moved upward to the push-in position of the upper shelf placement area; The user places the dishes to be washed in the first rack; When it is detected that the first shelf in the upper shelf placement area and in the push-out position is pushed inward, the second shelf moves downward to the push-in position of the lower shelf placement area, and the first shelf moves inward to the push-in position of the upper shelf placement area; The dishwasher is turned off and the upper zone washing program is started to wash the dishes on the first rack in the upper rack placement area.

9. The method for controlling a dishwasher according to claim 7, characterized in that: The process of the dishwasher performing the lower zone washing program is as follows: Open the dishwasher; It is detected that the first shelf in the upper shelf placement area is subjected to a pulling force, and the first shelf automatically extends outward from the push-in position of the upper shelf placement area to the push-out position of the upper shelf placement area; and the second shelf in the lower shelf placement area is moved upward to the push-in position of the upper shelf placement area; The user places the dishes to be washed in the first rack; When it is detected that the first shelf in the upper shelf placement area and in the push-out position is subjected to a downward pulling force, the first shelf is moved downward to the push-out position of the lower shelf placement area, and then the first shelf is moved inward to the push-in position of the lower shelf placement area; The dishwasher is turned off and the lower zone washing program is started to wash the dishes on the first rack in the lower rack placement area.

10. The method for controlling a dishwasher according to claim 7, characterized in that: The process of the dishwasher performing a full wash program is as follows: Open the dishwasher; It is detected that the first shelf in the upper shelf placement area is subjected to a pulling force, and the first shelf automatically extends outward from the push-in position of the upper shelf placement area to the push-out position of the upper shelf placement area; and the second shelf in the lower shelf placement area is moved upward to the push-in position of the upper shelf placement area; The user places the dishes to be washed in the first rack; When it is detected that the first shelf in the upper shelf placement area and in the push-out position is subjected to a downward pulling force, the first shelf is moved downward to the push-out position of the lower shelf placement area, and then the first shelf is moved inward to the push-in position of the lower shelf placement area; When it is detected that the second shelf in the push-in position in the upper shelf placement area is subjected to a pulling force, the second shelf automatically extends outward from the push-in position in the upper shelf placement area to the push-out position in the upper shelf placement area; The user places the dishes to be washed in the first rack; When it is detected that the second shelf in the upper shelf placement area and in the push-out position is subjected to an inward push force, the second shelf moves inward to the push-in position of the upper shelf placement area; or, when it is detected that the second shelf in the upper shelf placement area and in the push-out position is subjected to a downward push force, the second shelf moves downward to the push-out position of the lower shelf placement area, and after the first shelf moves upward to the push-in position of the upper shelf placement area, the second shelf is moved inward to the push-in position of the lower shelf placement area; Turn off the dishwasher and start the full wash program to wash all the dishes on the first and second racks.

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