Cleaning machine

Abstract

A cleaning machine, comprising: a tank (1), which has an inner cavity (10) with an open top or side portion, wherein the inner cavity of the tank partially serves as a storage space; a dish rack assembly, which is disposed in the inner cavity (10) of the tank (1), wherein the dish rack assembly comprises a shelf (2) and a dish rack (3), the shelf (2) being switchable between a first position and a second position, and when the shelf (2) is in the first position, the shelf (2) being located above the dish rack (3), and when the shelf (2) is in the second position, the shelf (2) being stored in the storage space; a water supply tube (4), which is provided with a water outlet (41); and a spray assembly, which is connected to the shelf (2) and is movable with the shelf (2), wherein when the shelf (2) is in the first position, the spray assembly is in fluid communication with the water outlet (41), and when the shelf (2) is in the second position, the spray assembly is fluidly disconnected from the water outlet (41). The spray assembly can clean tableware on the dish rack assembly, thereby improving the cleaning effect of the tableware.

Description

A washing machine TECHNICAL FIELD The present application relates to a washing machine for washing tableware and / or fruits and vegetables. BACKGROUND The washing machine is a device for automatically washing bowls, chopsticks, plates, dishes, knives, forks, pots, fruits and vegetables and other tableware, which greatly facilitates people's life. In the prior art, the washing machine has a washing cavity inside, and a bowl rack assembly is arranged in the washing cavity for placing tableware. In order to increase the number of articles to be washed, at least one bowl rack is usually provided, and at least one of the bowl racks can be in a use state or a storage state according to the number of articles to be washed. If the bowl rack is stored outside the washing machine in the non-use state, a special space is needed to place the bowl rack, which is relatively inconvenient. In view of this problem, the double-layer bowl rack disclosed in Chinese Utility Model Patent CN217429968U (Patent No. CN202221059984.7) has a hollow cavity in the interior of the fixed frame for containing tableware and an open top. Among the four circumferential sides of the fixed frame, any two opposite sides are respectively provided with a support structure adjacent to the inner side of the cavity. By folding or unfolding the first and second frame bodies of the shelf, the support structure of the fixed frame can be assembled to adjust to different use states as needed. When the first and second frame bodies are arranged side by side to unfold the entire shelf, the shelf has sufficient support area, and after being assembled with the fixed frame, the double-layer bowl rack can be stored in layers. When the lower tableware needs to be taken out, the first and second frame bodies are simply stacked and the shelf is turned over to the side of the fixed frame, which is simple and convenient to use. The shelf of the patent is located inside the fixed frame in the stacked state, so that no space is needed outside the washing machine to place the shelf. However, the storage of the shelf in the fixed frame will interfere with the placement of tableware in the fixed frame. In view of the above problems, the shelf assembly and the dishwasher with the same disclosed in Chinese Utility Model Patent CN219982822U (Patent No. CN202321570947.7) include a main shelf, a slide rail including a horizontal rail segment and a side rail segment connected together, the horizontal rail segment being horizontally arranged above or below the main shelf, and the side rail segment being detachably connected to the main shelf. A sliding bracket is slidably arranged on the slide rail between an unfolded position and a storage position. When the sliding bracket is in the unfolded position, it is located on the horizontal rail segment to accommodate horizontally arranged objects. Although the patent CN219982822U can make the sliding bracket located outside the main shelf when it is in the storage position, it does not occupy the space inside the main shelf. However, such a shelf assembly has the following defects: I. Because the slide rail is composed of a cross rail section and a side rail section, the sliding bracket is prone to jam when passing through the connection between the cross rail section and the side rail section. Therefore, in this patent

[0123] It is mentioned in the section that in order to better place tableware, the sliding bracket is generally made of hard material, and in order to facilitate the smooth change of direction of the sliding bracket, the width of the sliding bracket should not be too large. Therefore, the width of a single sliding bracket can be set to be narrow, and the placing area can be increased by increasing the number of sliding brackets. Therefore, when switching the state of the sliding bracket, it is necessary to move the sliding bracket one by one, which is relatively cumbersome. II. The sliding bracket of the patent has a small area and cannot place more tableware. Moreover, the sliding bracket cannot be too large, otherwise the height of the side rail section needs to be high, and the distance between the cross rail section and the main shelf will be far, resulting in that the sliding bracket is at a high position, and the tableware on the sliding bracket is prone to interfere with the top wall of the dishwasher, and also causes the waste of the vertical space between the main shelf and the cross rail section. III. The sliding bracket of the patent is erected between two slide rails, and because one end of the cross rail section is in a free state, the slide rail is prone to sway during the sliding process of the sliding bracket, which affects the sliding stability of the sliding bracket. IV. Regardless of the state of the sliding bracket, the cross rail section is always located above the lower bowl rack, which affects the taking and placing of tableware in the lower bowl rack. V. The patent does not specially set a spraying assembly for the sliding bracket, and therefore can only rely on the spraying arm at the bottom of the dishwasher for spraying. The spraying arm at the bottom of the dishwasher mainly sprays the main shelf, and the water flow to the sliding bracket will be weakened, and because of the shielding of the main shelf, the spraying of the main shelf to the tableware on the sliding bracket will be further affected, which affects the cleaning effect. SUMMARY The technical problem to be solved by the present application is to provide a cleaning machine which can configure a spraying assembly to clean the bowl rack assembly, and the spraying assembly can switch with the state of the shelf. The first technical solution adopted by the present application to solve the above technical problem is: A cleaning machine, comprising A box body having an inner cavity with a top or side opening, and part of the inner cavity of the box body serving as a storage space; A bowl rack assembly arranged in the inner cavity of the box body, the bowl rack assembly comprising a shelf and a bowl rack, the shelf being switchable between a first position and a second position, the shelf being located above the bowl rack when the shelf is in the first position, and the shelf being stored in the storage space when the shelf is in the second position; characterized in that it further comprises A water supply pipe having a water outlet; The spraying assembly is connected with the shelf and can move with the shelf, and when the shelf is in the first position, the spraying assembly is in fluid communication with the water outlet, and when the shelf is in the second position, the spraying assembly is in fluid disconnection with the water outlet. Preferably, when the shelf is in the first position, the shelf is horizontally placed above the bowl rack, and at this time, tableware can be placed on the shelf and the bowl rack, and when the shelf is in the second position, the shelf is vertically stored in the storage space, and the shelf does not need to be taken out of the cabinet when not in use, and there is no need to prepare a space outside the cabinet for placing the shelf and the spraying assembly. Preferably, the storage space is located on one side of the bowl rack, reducing the space occupation during storage, and the space above the bowl rack is not limited and can accommodate objects with a height exceeding the bowl rack. The storage space can be located inside the accommodation space of the bowl rack or outside the accommodation space of the bowl rack, in which case the shelf does not occupy the space inside the bowl rack and does not affect the placement of tableware in the bowl rack. The shelf can be manually moved to the first position or the second position, and the shelf is not connected with the bowl rack and the cabinet, and preferably, the cleaning machine further comprises a connecting member capable of being located in the cabinet, the shelf is connected with the connecting member, the shelf can be rotated to a horizontal state or a vertical state, and the shelf in the vertical state can be moved to one side of the bowl rack or above the bowl rack in the up-down direction. In this way, when the shelf is moved, it will be constrained by the connecting member, and its movement track will be limited to a certain extent. In addition, when the shelf is switched from the first position to the second position, the shelf is first rotated upward to the vertical state, and then the shelf is moved downward to be located beside the bowl rack, and when the shelf is switched from the second position to the first position, the shelf is first moved upward to the top of the bowl rack, and then the shelf is rotated downward to the horizontal state. As can be seen from the movement process of the shelf, the shelf of the present application will not have the problem of component interference and jamming when switching between the horizontal and vertical states, and the movement process of the shelf can be carried out smoothly. Furthermore, the form of the shelf turning over can make the size of the shelf larger, and even the top of the bowl rack can be completely covered, so that a large number of tableware can be placed. The shelf can be close to the bowl rack when it is in the first position, and the structure is compact in the vertical direction, so that the vertical space is not wasted. The connecting member can be a rope that locally binds the shelf and the bowl rack together, but does not affect the movement of the shelf. However, the constraint on the movement track of the shelf is relatively small, and therefore, preferably, the connecting member is in the form of a rod with an axis extending in the horizontal direction, and the shelf can be rotated about the axis of the connecting member to a horizontal state or a vertical state, and the shelf in the vertical state can be moved up and down relative to the connecting member to one side of the bowl rack or above the bowl rack. In this way, the connecting member can constrain the shelf to a certain extent when the shelf is rotated. In the above scheme, the axis of the connecting member extends in the left-right direction, and in this case, the shelf is flipped front and back; or the axis of the connecting member extends in the front-back direction, and in this case, the shelf is flipped left and right. In order to guide the vertical moving track of the shelf, the cleaning machine further comprises a guide rail which can be located in the box body, and one end of the connecting piece extends into the guide rail, and when the shelf is in the vertical state, the guide rail extends vertically and is in sliding fit with the connecting piece to play a guiding role. One of the setting modes of the guide rail is that the guide rail is arranged on the shelf, and the connecting piece is relatively fixedly mounted on the box body or the bowl rack, and when the shelf is in the first position, the guide rail extends horizontally. When the shelf is in the second position, the guide rail is removed from above the bowl rack, and does not affect the placement of the tableware in the bowl rack. Another setting mode of the guide rail is that the guide rail is arranged on the bowl rack and extends vertically, and the connecting piece is mounted on the shelf. Preferably, the axis of the connecting piece extends in the left-right direction, and when the shelf is in the first position, the guide rail extends in the front-rear direction. In this way, the shelf is flipped front-rear, which is more convenient for the user to operate than left-right flipping. When the shelf is in the second position, one form is that the shelf is flipped on the front side of the bowl rack: when the shelf is in the first position, the connecting piece is adjacent to the front end of the guide rail, and when the shelf is in the second position, the shelf and the spraying assembly are located between the front wall of the bowl rack and the inner cavity. In this case, the shelf is flipped forward, and because the water supply pipe is generally arranged at the rear of the box body, flipping the shelf to the front side does not make the rear of the box body too crowded; in addition, flipping the shelf to the front side does not affect the user's vision and tableware placement experience. In this scheme, the guide rail extends straight, and the connecting piece is located obliquely below the water outlet of the water supply pipe. When the shelf is in the second position, one form is that the shelf is flipped on the rear side of the bowl rack: when the shelf is in the first position, the connecting piece is adjacent to the rear end of the guide rail, and when the shelf is in the second position, the shelf and the spraying assembly are located between the rear wall of the bowl rack and the inner cavity. Flipping rearward is more in line with ergonomics and is more convenient to operate. In the rear-flipping scheme of the shelf, one of the structures of the guide rail is that the height at which the connecting piece is located is consistent with the height at which the water outlet is located, the guide rail comprises a straight segment extending straight and an inclined segment extending obliquely, when the shelf is in the first position, the front end of the inclined segment is connected to the rear end of the straight segment, the straight segment extends in the front-rear direction, and the inclined segment obliquely inclines upward from front to rear, and the connecting piece extends into the inclined segment. In this structure of the guide rail, when the shelf is flipped, the water pipe does not interfere with the water supply pipe. In the rear-flipping scheme of the shelf, another structure of the guide rail is that the guide rail extends straight, and the connecting piece is located obliquely below the water outlet of the water supply pipe. The spray assembly can have various structures. Preferably, the spray assembly comprises a water passing pipe for conveying water flow and a spray hole for spraying water in the water passing pipe. When the shelf is in the first position, the water passing pipe extends horizontally and is in fluid communication with the water outlet. When the shelf is in the second position, the water passing pipe extends vertically and is disconnected from the water outlet. During the turning of the shelf, the water passing pipe and the water supply pipe are likely to interfere with each other, affecting the turning of the shelf. Therefore, the water passing pipe can move along the front-back direction relative to the shelf when the shelf is in the first position, so as to solve the problem of interference between the water passing pipe and the water supply pipe when the shelf is switched between the two positions. Preferably, the outer circumferential wall of the water passing pipe is provided with a positioning member extending along the length direction of the water passing pipe, and the shelf is provided with a positioning portion constrained in the positioning slot. The positioning slot and the positioning portion can be relatively displaced, and the positioning portion is always located in the positioning slot. Alternatively, the shelf is provided with a positioning member extending along the length direction of the water passing pipe, and the outer circumferential wall of the water passing pipe is provided with a positioning portion constrained in the positioning slot. The positioning slot and the positioning portion can be relatively displaced, and the positioning portion is always located in the positioning slot. The cooperation between the positioning member and the positioning portion ensures that the water passing pipe is always connected to the shelf, and the water passing pipe can move along the length direction relative to the shelf. The shelf is a hollow structure formed by frame strips, and the positioning portion is the frame strip. In order to make the water passing pipe move forward and backward relative to the water supply pipe when the two pipes interfere with each other, so as to eliminate the interference between the two pipes, the outer side wall of the water supply pipe is provided with a protruding portion, and the water outlet is arranged on the protruding portion. The wall surface of the protruding portion is a first inclined surface inclined downward and backward, and the wall surface of the water inlet end of the water passing pipe is a second inclined surface capable of being inclinedly matched with the first inclined surface. When the water passing pipe is turned downward from the water outlet, the water passing pipe will move forward due to the extrusion of the first inclined surface. When the water passing pipe is in the vertical state, the positioning portion is in abutment with the top wall of the positioning slot (the rear end of the water passing pipe in the horizontal state) under the action of gravity. When the water passing pipe is turned upward toward the water outlet, the water passing pipe will move forward due to the extrusion of the first inclined surface, so that the water inlet end of the water passing pipe is smoothly connected to the water outlet. The included angle between the first inclined surface and the vertical surface is about 10°, so that the interference amount of the water passing pipe during turning is reduced by tan 10°, achieving the effect of smooth turning. Preferably, when the shelf is in the first position, the shelf is supported on the bowl rack, so as to improve the stability of the shelf. Preferably, the connecting member is arranged on the top of the bowl rack. When the shelf is in the first position, the guide rail is supported on the top of the bowl rack. At this time, the guide rail extends along the front-back direction and has a large contact area with the bowl rack, so that the stability of the shelf is good. Preferably, the opposite sides of the shelf are provided with the guide rails, and the connecting pieces are two in number. This not only makes the force evenly distributed when the shelf is in motion, but also further increases the contact area between the guide rail and the bowl rack, thereby improving the stability of the shelf. Preferably, the connecting pieces are located at the top of the bowl rack, and when the shelf is in the second position, the connecting pieces are lower than the highest point of the shelf. In this way, when the shelf is in the first position, there is enough space above it to place items. Preferably, the cross section of the bowl rack is square, and the connecting pieces are located adjacent to the corners of the bowl rack, so as to facilitate the turning of the shelf to the side of the bowl rack. In the above scheme, the spray assembly includes a water passing pipe for conveying water flow and spray holes for spraying water in the water passing pipe, the water passing pipe is installed on the shelf, when the shelf is in the first position, the water passing pipe extends horizontally, and the water passing pipe is in butt joint and fluid communication with the water outlet; when the shelf is in the second position, the water passing pipe extends vertically, and the water passing pipe is separated from the water outlet and fluidly disconnected. In order to guide the water passing pipe and facilitate the water inlet end of the water passing pipe to align with the water outlet, a vertical sliding channel is provided on the water supply pipe, the water outlet is located in the sliding channel or at the end of the sliding channel, and the water inlet end of the water passing pipe can slide along the sliding channel to guide the water passing pipe, thereby improving the accuracy of the connection between the water passing pipe and the water outlet. Preferably, the sliding channel is in the shape of a horn that is tapered in the direction along which the water passing pipe moves to the water outlet, so as to facilitate the smooth entry of the water passing pipe into the sliding channel, and when the water passing pipe corresponds to the water outlet, the water passing pipe is positioned relative to the sliding channel in the left-right direction. Preferably, two guide blocks are symmetrically provided on the outer peripheral wall of the water inlet end of the water passing pipe, and guide grooves are provided on the side wall of the sliding channel along the length direction thereof, the guide blocks correspondingly slide along the guide grooves of a guide strip; along the direction in which the water passing pipe moves to the water outlet, the width of the guide grooves gradually decreases, so as to facilitate the entry of the guide blocks into the guide grooves, and when the water passing pipe corresponds to the water outlet, the guide blocks are positioned relative to the guide grooves in the front-rear direction. In order to improve the spraying effect on the tableware in the bowl rack, a second spray piece is provided in the box, and the spray port of the second spray piece faces the bowl rack. Preferably, the second spray piece is located below the bowl rack, the lower part of the water supply pipe is provided with a resting table, and the resting table is located above the second spray piece. When the shelf is in the second position, the bottom of the water passing pipe rests on the resting table, preventing the water passing pipe from interfering with the rotation of the second spray piece when the shelf is in the second position. Preferably, the shelf is provided with a first limiting part, and the bowl rack is provided with a second limiting part, when the shelf is in the second position, the first limiting part abuts against the second limiting part, and the shelf is located above the second spraying member, thereby preventing the shelf from interfering with the rotation of the second spraying member when the shelf is in the second position. In the above scheme, when the shelf is in the second position, the spraying assembly is located on the side of the shelf facing the bowl rack, and the structure is compact. Preferably, when the shelf is in the first position, the vertical projection of the shelf falls within the vertical projection of the bowl rack, and the vertical projection area of the shelf accounts for 90%-98% of the vertical projection area of the bowl rack, so that the shelf has a larger area and can hold a larger number of tableware. The second technical solution adopted by the present application to solve the above technical problems is a cleaning machine, comprising The box has an inner cavity with an open top or side, and the inner cavity of the box is partially used as a storage space; The bowl rack assembly is arranged in the inner cavity of the box, and comprises a shelf and a bowl rack, the shelf can be switched between a first position and a second position, when the shelf is in the first position, the shelf is located above the bowl rack, and when the shelf is in the second position, the shelf is stored in the storage space; The water supply pipe is provided with a water outlet; The pump water mechanism is used to supply water to the water supply pipe; The spraying assembly is connected with the shelf and can move with the shelf, the spraying assembly comprises a water passing pipe for conveying water flow and a spraying hole for spraying water in the water passing pipe, the water passing pipe is installed on the shelf, and the water passing pipe can move in the front-rear direction relative to the shelf; When the shelf is in the first position, the spraying assembly is in fluid communication with the water outlet, and when the shelf is in the second position, the spraying assembly is in fluid disconnection with the water outlet. During the switching of the shelf position, interference is easily generated between the water passing pipe and the water supply pipe, affecting the movement of the shelf, therefore, the water passing pipe of the present application can move in the front-rear direction relative to the shelf, so that the whole water passing pipe moves with the shelf, but has a certain movement allowance relative to the shelf, and will not interfere with the water supply pipe, thereby solving the problem of interference between the water passing pipe and the water supply pipe when the shelf is in the switching position. In the above scheme, when the shelf is in the first position, the water passing pipe extends horizontally, and the water passing pipe is in abutment and fluid communication with the water outlet; when the shelf is in the second position, the water passing pipe extends vertically, and the water passing pipe is separated from the water outlet and in fluid disconnection. Preferably, the outer peripheral wall of the water pipe is provided with a positioning member having a positioning groove extending along the length direction of the water pipe, and the shelf is provided with a positioning part constrained in the positioning groove, and the positioning groove and the positioning part can produce relative displacement, and the positioning part is always located in the positioning groove. Alternatively, the shelf is provided with a positioning member having a positioning groove extending along the length direction of the water pipe, and the outer peripheral wall of the water pipe is provided with a positioning part constrained in the positioning groove, and the positioning groove and the positioning part can produce relative displacement, and the positioning part is always located in the positioning groove. The cooperation of the positioning member and the positioning part makes the water pipe always connected with the shelf, and the water pipe can move along the length direction relative to the shelf. The shelf is a hollow structure composed of frame strips, and the positioning part is the frame strip. Preferably, when the shelf is in the first position, the shelf is horizontally placed above the bowl rack, and at this time, tableware can be placed on the shelf and the bowl rack; when the shelf is in the second position, the shelf is vertically stored in the storage space, and the shelf does not need to be taken out of the box when not in use, and there is no need to prepare space for placing the shelf and the spraying assembly outside the box. Preferably, the storage space is located on one side of the bowl rack, reducing the space occupation during storage, and the space above the bowl rack is not limited and can accommodate objects with a height exceeding the bowl rack. The storage space can be located inside the accommodation space of the bowl rack, or outside the accommodation space of the bowl rack. In this case, the shelf does not occupy the space inside the bowl rack and does not affect the placement of tableware in the bowl rack. The shelf can be manually moved to the first position or the second position, and the shelf has no connection relationship with the bowl rack and the box. Preferably, the cleaning machine further comprises a connecting member capable of being located in the box, the shelf is connected with the connecting member, the shelf can be rotated to a horizontal state or a vertical state, and the shelf in the vertical state can be moved to one side of the bowl rack or above the bowl rack in the up-down direction. In this way, when the shelf is moved, it will be constrained by the connecting member, and its movement track will be limited to a certain extent. In addition, when the shelf is switched from the first position to the second position, the shelf is first rotated upward to the vertical state, and then the shelf is moved downward to be located beside the bowl rack. When the shelf is switched from the second position to the first position, the shelf is first moved upward to the top of the bowl rack, and then the shelf is rotated downward to the horizontal state. As can be seen from the movement process of the shelf, the shelf of the present application will not have the problem of component interference and jamming when switching between the horizontal and vertical states, and the movement process of the shelf can be carried out smoothly. Moreover, the form of turning over of the shelf can make the size of the shelf larger, and even can cover the top opening of the bowl rack completely, so that a large number of tableware can be placed. The shelf can be close to the bowl rack when it is in the first position, and the structure is compact in the vertical direction, so that the vertical space is not wasted. The connecting member can be a rope, which partially binds the shelf and the bowl rack together, but does not affect the movement of the shelf. However, the movement track of the shelf is not limited. Preferably, the connecting member is in the shape of a rod, and the axis of the rod extends horizontally. The shelf can rotate around the axis of the connecting member to a horizontal state or a vertical state. When the shelf is in the vertical state, the shelf can move up and down relative to the connecting member to one side of the bowl rack or above the bowl rack. In this way, the connecting member can limit the movement of the shelf when the shelf rotates. In order to guide the vertical movement track of the shelf, the cleaning machine further comprises a guide rail arranged on the shelf. The connecting member is fixedly arranged on the box body or the bowl rack. One end of the connecting member extends into the guide rail. When the shelf is in the first position, the guide rail extends horizontally. When the shelf is in the vertical state, the guide rail extends vertically and is in sliding fit with the connecting member, so as to guide the movement of the shelf. Preferably, the axis of the connecting member extends in the left-right direction. When the shelf is in the first position, the guide rail extends in the front-rear direction. In this way, the shelf is flipped in the front-rear direction, which is convenient for the user to operate. When the shelf is in the first position, the connecting member is adjacent to the rear end of the guide rail. When the shelf is in the second position, the shelf and the spraying assembly are located between the bowl rack and the rear wall of the inner cavity. In this way, the shelf is flipped backward, which is more in line with the ergonomics and is more convenient to operate. In the scheme of flipping the shelf backward, the structure of the guide rail is that the guide rail extends straight, and the connecting member is located obliquely below the water outlet of the water supply pipe. Preferably, the connecting member is located on the top of the bowl rack. When the shelf is in the second position, the connecting member is lower than the highest point of the shelf. In this way, when the shelf is in the first position, there is enough space above the shelf to place articles. Preferably, the cross section of the bowl rack is in the shape of a square. The connecting member is arranged adjacent to the corner of the bowl rack, so as to facilitate the shelf to be flipped to the side of the bowl rack. In order to make the water pipe move forward and backward relative to the water supply pipe when the water pipe interferes with the water supply pipe, and to remove the interference between the two, a convex part is arranged on the outer wall of the water supply pipe, the water outlet is arranged on the convex part, and the wall surface of the convex part is a first inclined surface that is inclined backward from top to bottom, and the wall surface of the water inlet end of the water pipe is a second inclined surface that can be inclined surface matched with the first inclined surface. When the water pipe is turned over downward from the water outlet, the water pipe will move forward due to the extrusion of the first inclined surface, and when the water pipe is in a vertical state, the positioning part is in abutment with the top wall of the positioning groove (the rear end when the water pipe is in a horizontal state) under the action of gravity. When the water pipe is turned over upward towards the water outlet, the water pipe will move forward due to the extrusion of the first inclined surface, so that the water inlet end of the water pipe is smoothly connected with the water outlet. The included angle between the first inclined surface and the vertical surface is about 10°, so that when the water pipe is turned over, the interference amount is reduced by tan10°, and the effect of smooth turning over is achieved. Preferably, when the shelf is in the first position, the shelf is supported on the bowl rack to improve the stability of the shelf. In order to guide the water pipe and facilitate the water inlet end of the water pipe to be aligned with the water outlet, a vertically extending slide is arranged on the water supply pipe, the water outlet is located in the slide or at the end of the slide, and the water inlet end of the water pipe can slide along the slide to guide the water pipe, thereby improving the accuracy of the connection between the water pipe and the water outlet. Preferably, the slide is in the shape of a horn that is reduced in diameter along the direction in which the water pipe moves to the water outlet, so that the water pipe smoothly enters the slide, and when the water pipe corresponds to the water outlet, the water pipe is positioned relative to the slide in the left-right direction. Preferably, two guide blocks are symmetrically arranged on the outer peripheral wall of the water inlet end of the water pipe, guide grooves are arranged on the side wall of the slide along the length direction of the slide, and the guide blocks correspondingly slide along the guide grooves of a guide strip; along the direction in which the water pipe moves to the water outlet, the width of the guide groove gradually decreases, so that the guide blocks enter the guide groove, and when the water pipe corresponds to the water outlet, the guide blocks are positioned relative to the guide groove in the front-rear direction. In order to improve the spraying effect on the tableware in the bowl rack, a second spraying member is arranged in the box, and the nozzle of the second spraying member faces the bowl rack. Preferably, the second spraying member is located below the bowl rack, the lower part of the water supply pipe is provided with a resting table, and the resting table is located above the second spraying member. When the shelf is in the second position, the bottom of the water pipe is rested on the resting table, so that the water pipe does not interfere with the rotation of the second spraying member when the shelf is in the second position. In the above scheme, when the shelf is in the second position, the spraying assembly is located on the side of the shelf that faces the bowl rack, and the structure is compact. Preferably, when the shelf is in the first position, the vertical projection of the shelf falls within the vertical projection of the bowl rack, and the vertical projection area of the shelf accounts for 90%-98% of the vertical projection area of the bowl rack, the area of the shelf is larger, and a larger number of tableware can be placed. Compared with the prior art, the advantages of the present application are: 1. The present application is provided with a spraying assembly, which can clean the tableware on the bowl rack assembly (bowl rack and / or shelf), thereby improving the cleaning effect of the tableware; 2. The spraying assembly of the present application is in fluid communication with the water outlet when the shelf is in the first position, so as to be able to spray water to clean the tableware, and when the shelf is in the second position, the spraying assembly moves and is disconnected from the water outlet; that is, the spraying assembly of the present application can switch the working state along with the state switching of the shelf, and is connected or disconnected with the water supply pipe, without the need to specially switch the working state of the spraying assembly after the shelf position is switched, and the operation is convenient. BRIEF DESCRIPTION OF DRAWINGS Fig. 1 is a structural schematic diagram of the embodiment 1 of the present application (the shelf is in the first position); Fig. 2 is a partial structural schematic diagram of Fig. 1; Fig. 3 is an enlarged view of A in Fig. 2; Fig. 4 is an enlarged view of B in Fig. 2; Fig. 5 is an enlarged view of C in Fig. 2; Fig. 6 is a sectional view of Fig. 5; Fig. 7 is a sectional view of another structural form of the connecting piece; Fig. 8 is a sectional view of Fig. 2; Fig. 9 is an enlarged view of D in Fig. 8; Fig. 10 is a structural schematic diagram of the shelf of Fig. 2; Fig. 11 is a partial structural schematic diagram of the water supply pipe of Fig. 2; Fig. 12 is a structural schematic diagram of another direction of Fig. 11; Fig. 13 is a structural schematic diagram of the water passing pipe of Fig. 2; Fig. 14 is a schematic diagram of the positional relationship between the bowl rack assembly and the box of Fig. 1; Fig. 15 is a structural schematic diagram of the embodiment 1 of the present application (the shelf is in the second position); Fig. 16 is a partial structural schematic diagram of Fig. 15; Fig. 17 is a sectional view of Fig. 16; Fig. 18 is an enlarged view of E in Fig. 17; Fig. 19 is a structural schematic diagram of the bowl rack in Fig. 2; Fig. 20 is a structural schematic diagram of the embodiment 2 of the present application (the shelf is in the first position); Fig. 21 is a structural schematic diagram of the shelf of Fig. 20 being flipped upward from the first position; Fig. 22 is a schematic view of the structure of the shelf moving from Fig. 21 to the second position; Fig. 23 is a schematic view of the structure of the embodiment 2 of the present application (the shelf is in the second position); Fig. 24 is a schematic view of the structure of the embodiment 3 of the present application (the shelf is in the first position); Fig. 25 is a schematic view of the structure of the embodiment 3 of the present application (the shelf is in the second position). DETAILED DESCRIPTION The present application will be further described in detail below in combination with the embodiments. Embodiment 1 As shown in Figs. 1-19, it is a preferred embodiment 1 of the dishwasher of the present application. The dishwasher of the embodiment is used for cleaning tableware and / or fruits and vegetables, and the tableware includes bowls, dishes, pots and the like. The dishwasher includes a box 1, a bowl rack assembly and a water flow system. The box 1 has an inner cavity 10 with a top or side opening. In the embodiment, the inner cavity 10 is open at the top, and the inner cavity 10 of the box 1 is partially used as a storage space. The bowl rack assembly is arranged in the inner cavity 10 of the box 1, and the bowl rack assembly includes a shelf 2 and a bowl rack 3. The bowl rack 3 can be placed on the bottom wall of the inner cavity 10 or removed from the inner cavity 10. The shelf 2 and the bowl rack 3 of the embodiment can not only place bowls, dishes and the like, but also place pots, fruits and vegetables and the like. The shelf 2 can be switched between a first position and a second position. As shown in Fig. 2, when the shelf 2 is in the first position, the shelf 2 is horizontally located above the bowl rack 3. At this time, tableware can be placed on the shelf 2 and the bowl rack 3. As shown in Fig. 16, when the shelf 2 is in the second position, the shelf 2 is vertically stored in the storage space. The storage space is located on one side of the bowl rack 3. When the shelf 2 is not used, it does not need to be taken out of the box 1, and there is no need to prepare space for placing the shelf 2 and the spray assembly outside the box 1. The shelf 2 can be manually moved to the first position or the second position. The shelf 2 has no connection relationship with the bowl rack 3 and the box 1. In the embodiment, the dishwasher further includes a connecting piece 31 which can be located in the box 1. The shelf 2 is connected with the connecting piece 31. The connecting piece 31 is in the shape of a rod with an axis S extending in the horizontal direction. The shelf 2 can be rotated to a horizontal state or a vertical state around the axis S of the connecting piece 31. When the shelf 2 is in the vertical state, it can be moved up and down to one side of the bowl rack 3 or above the bowl rack 3 relative to the connecting piece 31. That is, the shelf 2 can be rotated to a horizontal state or a vertical state around the connecting piece 31, and when the shelf 2 is in the vertical state, it can be moved up and down to one side of the bowl rack 3 or above the bowl rack 3 relative to the connecting piece 31. When the shelf 2 is switched from the first position to the second position, the shelf 2 is first turned upward to the vertical state, and then the shelf 2 is moved downward to be beside the bowl rack 3; when the shelf 2 is switched from the second position to the first position, the shelf 2 is first moved upward to the top of the bowl rack 3, and then the shelf 2 is turned downward to the horizontal state. As can be seen from the movement of the shelf 2, the shelf 2 will not be interfered and jammed when switched between the horizontal and vertical states, and the movement of the shelf 2 can be smoothly performed, and the top of the inner cavity 10 is open, so that the shelf 2 has enough space to be turned up and down. In addition, the form of the turning of the shelf 2 of the present application can make the size of the shelf 2 larger, and even can cover the top of the bowl rack 3, so that a larger number of tableware can be placed. In the embodiment, when the shelf 2 is in the first position, the vertical projection of the shelf 2 falls within the vertical projection of the bowl rack 3, and the vertical projection area of the shelf 2 accounts for 90%-98% of the vertical projection area of the bowl rack 3, so that the shelf 2 has a larger area and can place a larger number of tableware. As shown in FIGS. 2, 5 and 6, the axis S of the connecting piece 31 extends along the left-right direction, and at this time, the shelf 2 is turned front and back; of course, the axis S of the connecting piece 31 can also extend along the front-back direction, and at this time, the shelf 2 is turned left and right, but it is not as convenient as the front and back turning. The cleaning machine further comprises a guide rail 24 which can be located in the cabinet 1, and one end of the connecting piece 31 extends into the guide rail 24, and when the shelf 2 is in the vertical state, the guide rail 24 extends vertically and is in sliding fit with the connecting piece 31, so as to guide the vertical movement of the shelf 2. In the embodiment, the guide rail 24 is arranged on the shelf 2, and a ring-shaped frame strip is arranged at the bottom of the shelf 2, and the area inside the frame strip is the guide rail 24, so that the structure is simple. The bowl rack 3 is fixedly provided with a fixing piece 35, and the connecting piece 31 is fixedly arranged on the fixing piece 35, so that the connecting piece 31 is relatively fixedly arranged on the top of the bowl rack 3; of course, the connecting piece 31 can also be fixedly arranged on the side wall 1 of the cabinet 1. In addition, a groove 310 is arranged on the peripheral wall of the connecting piece 31, and the guide rail 24 is embedded in the groove 310, so as to prevent the guide rail 24 and the connecting piece 31 from being separated. As shown in FIG. 7, the cross section of the connecting piece 31 can be circular, or as shown in FIGS. 5 and 6, the connecting piece 31 comprises a shaft 311 and a roller 312 which is rotatably arranged on the shaft, and the cross section of the roller 312 is elliptical. Of course, the guide rail 24 can also be arranged on the bowl rack 3, and in this case, the guide rail 24 extends vertically, and the connecting piece 31 is arranged on the shelf 2. When the shelf 2 is in the first position, the guide rail 24 extends in the front-rear direction, and the shelf 2 is supported on the bowl rack 3 to improve the stability of the shelf. In the embodiment, the top of the bowl rack 3 is provided with a support portion 33, and when the shelf 2 is in the first position, the shelf 2 is supported on the support portion 33, and the support portion 33 is inclined from bottom to top towards the central part of the bowl rack 3. When the shelf 2 is switched from the second position to the first position, the support portion 33 plays a guiding role for the guide rail 24, so that the shelf 2 is horizontally covered above the bowl rack 3. In addition, the support portion 33 is in a U shape, and both ends are mounted on the bowl rack 3, and the support portion 33 is used as a handle. The embodiment adopts a form of rearward tilting of the shelf 2: when the shelf 2 is in the first position, the connecting piece 31 is adjacent to the rear end of the guide rail 24, so that the shelf 2 is tilted rearward. When the shelf 2 is in the second position, the shelf 2 is located between the bowl rack 3 and the rear wall surface of the inner cavity 10 and is tilted rearward, which is more in line with human engineering mechanics and is more convenient to operate; and in this state, the connecting piece 31 is lower than the highest point of the shelf 2, so that there is enough space above the shelf 2 to place articles when the shelf 2 is in the first position; in this state, the connecting piece 31 is located at the upper part of the guide rail 24, preventing the upper part of the shelf 2 from shaking. The opposite sides (left and right sides) of the shelf 2 are each provided with a guide rail 24, and correspondingly, the connecting piece 31 has two, so that the shelf 2 is uniformly stressed when it is moved. The shelf 2 and the guide rail 24 jointly form a U-shaped structure, and the ratio of the length j to the height h of the U-shaped structure is between 0.13 and 0.16, and the U-shaped structure is relatively thin and occupies less space in the thickness direction. The cross section of the bowl rack 3 is square, and the connecting piece 31 is arranged adjacent to the corner of the bowl rack 3, so as to facilitate tilting of the shelf 2 to the side of the bowl rack 3. As shown in FIG. 14, a horizontal plane where the center line of the connecting piece 31 is located is referred to as a horizontal boundary line a, a plumb plane where the center line of the connecting piece 31 is located is referred to as a longitudinal boundary line b, a horizontal distance between the longitudinal boundary line b and the rear wall surface of the inner cavity 10 is referred to as L1, a horizontal distance between the longitudinal boundary line b and the rearmost part of the shelf 2 when the shelf 2 is in the first position is referred to as L2, and a vertical distance between the horizontal boundary line a and the highest point of the shelf 2 when the shelf 2 is in the first position is referred to as L4, L1≥L4, and L1≥L2, so that the shelf 2 has enough storage space and installation gap before and after tilting. L4 / L2=(0.8-1.2), so that the shelf 2 has a large enough area to place articles when it is in the first position. As shown in Fig. 10, the corner of the shelf 2 can be provided with a partial upwardly arched blocking rib 27, and the blocking rib 27 and the shelf 2 form a limiting opening 271 for limiting the tableware. Some tableware, such as the pot body of the pot, can be buckled in the limiting opening 271, and the blocking rib 27 abuts against the outer peripheral wall of the pot body. In this case, as shown in Fig. 14, the straight line distance between the center line of the connecting piece 31 and the most rear part of the shelf 2 in the first position state is referred to as L3, and L1≥L3, so as to prevent the blocking rib 27 from interfering with the cabinet 1 when the shelf 2 is overturned. In the case that the height H of the inner cavity 10 of the cabinet 1 is fixed, in order to improve the space utilization of the inner cavity 10 of the cabinet 1 and realize large number of cleaning, the height of the bowl rack 3 is L5, and L4 / L5≤0.25. The height of the inner cavity 10 is H, and 50%≤L5 / H≤80%, so as to leave space for the shelf 2 and the articles placed thereon; 60%≤(L4+L5) / H≤90%, so as to leave space above the shelf 2 in the first position, which can accommodate some tableware or fruits and vegetables with a height exceeding L4. In the embodiment, as shown in Fig. 19, the top of the bowl rack 3 is open to form a first opening 301, and the side of the bowl rack 3 is open to form a second opening 302. Of course, the side of the bowl rack 3 can also not be provided with the second opening 302. When the shelf 2 is in the first position, the shelf 2 extends horizontally and covers the first opening 301. When the shelf 2 is in the second position, the shelf 2 extends vertically and covers the second opening 302. Hereinafter, it is explained that the bowl rack assembly of the embodiment can be used not only in the cleaning machine, but also in other household appliances, such as a sterilization cabinet. As shown in Figs. 8 and 9, the water flow system comprises a water supply pipe 4 and a spraying assembly. The water supply pipe 4 is provided with a water outlet 41. In the embodiment, the water supply pipe 4 is located in the inner cavity 10 of the cabinet 1 and at the rear part thereof. Alternatively, the water supply pipe 4 can be partially located outside the cabinet 1, but the water outlet 41 is located in the inner cavity 10 of the cabinet 1. The water flow system further comprises a water pumping mechanism for supplying water to the water supply pipe 4. The water pumping mechanism can adopt an existing structure. The spraying assembly is connected with the shelf 2 and can move with the shelf 2. When the shelf 2 is in the first position, the spraying assembly is in fluid communication with the water outlet 41. When the shelf 2 is in the second position, the spraying assembly is out of fluid communication with the water outlet 41. The spraying assembly comprises a water passing pipe 22 for conveying water flow and spraying holes for spraying water in the water passing pipe 22, which are arranged on the water passing pipe 22. Alternatively, the spraying assembly further comprises a first spraying member 21 in fluid communication with the water passing pipe 22, and the spraying holes are arranged on the first spraying member 21. The first spraying member 21 of the embodiment is in a strip shape, and the extending direction is the same as that of the water passing pipe 22. As shown in FIG. 17, the bowl rack 3 is provided with an avoiding opening 301 for avoiding the spraying assembly. When the shelf 2 is in the second position, the spraying assembly passes through the avoiding opening 301 downward. The shelf 2 and the guide rail 24 integrally form a U-shaped structure. The spraying assembly is located in the U-shaped area of the U-shaped structure. The bowl rack 3 is partially surrounded by the U-shaped area. The spraying holes of the embodiment are directed to the shelf 2, so as to clean the articles on the shelf 2. Of course, the spraying holes can also be directed to the bowl rack 3, or part of the spraying holes are directed to the shelf 2 and part of the spraying holes are directed to the bowl rack 3. The water passing pipe 22 is mounted on the shelf 2, that is, the shelf 2 also serves as a mounting member for mounting the water passing pipe 22. The extending direction of the mounting member is consistent with that of the water passing pipe 22. As shown in FIGS. 2 and 8, when the shelf 2 is in the first position, the water passing pipe 22 extends horizontally. The water passing pipe 22 is in abutment with and in fluid communication with the water outlet 41. As shown in FIGS. 16 and 17, when the shelf 2 is in the second position, the water passing pipe 22 extends vertically. The water passing pipe 22 is separated from and in fluid disconnection with the water outlet 41. The shelf 2 and the spraying assembly of the water flow system are both located between the bowl rack 3 and the rear wall of the inner cavity 10, that is, the shelf 2 and the spraying assembly are both located at the rear of the inner cavity 10 and at the rear side of the bowl rack 3. The spraying assembly is located at the side of the shelf 2 which is directed to the bowl rack 3. In the embodiment, the guide rail 24 extends straightly. The connecting member 31 is located obliquely below the water outlet 41 of the water supply pipe 4. During the overturning of the shelf 2, interference between the water passing pipe 22 and the water supply pipe 4 is prone to occur, which affects the overturning of the shelf 2. Therefore, in order to solve the problem, the water passing pipe 22 can move relative to the shelf 2 along the front-rear direction when the shelf 2 is in the first position. As shown in FIG. 3, the outer peripheral wall of the water passing pipe 22 is provided with a positioning member 221. The positioning member 221 has a positioning groove 222 extending along the length direction of the water passing pipe 22. The shelf 2 is provided with a positioning portion 25 which is constrained in the positioning groove 222. The positioning groove 222 and the positioning portion 25 can produce relative displacement. The positioning portion 25 is always located in the positioning groove 222. The cooperation between the positioning member 221 and the positioning portion 25 makes the water passing pipe 22 always connected with the shelf 2, and the water passing pipe 22 can move relative to the shelf 2 along the length direction. The shelf 2 is a hollow structure formed by frame strips. The positioning portion 25 is a frame strip. Of course, the shelf 2 can be provided with the positioning member 221. The positioning member 221 has a positioning groove 222 extending along the length direction of the water passing pipe 22. The outer peripheral wall of the water passing pipe 22 is provided with a positioning portion 25 which is constrained in the positioning groove 222. The positioning groove 222 and the positioning portion 25 can produce relative displacement. The positioning portion 25 is always located in the positioning groove 222. In addition, as shown in FIG. 9, a protrusion 42 is arranged on the front side wall of the water supply pipe 4, the water outlet 41 is arranged on the protrusion 42, and the wall surface of the protrusion 42 is a first inclined surface 421 which is inclined downward from top to bottom. The wall surface of the water inlet end of the water passing pipe 22 is a second inclined surface 223 which can be matched with the first inclined surface 421. When the water passing pipe 22 is turned downward from the water outlet 41, the water passing pipe 22 will move forward due to the extrusion of the first inclined surface 421. When the water passing pipe 22 is in the vertical state, the positioning portion 25 will abut against the top wall of the positioning groove 222 (the rear end when the water passing pipe 22 is in the horizontal state) under the action of gravity. When the water passing pipe 22 is turned upward toward the water outlet 41, the water passing pipe 22 will move forward due to the extrusion of the first inclined surface 421, so that the water inlet end of the water passing pipe 22 is smoothly connected with the water outlet 41. The included angle between the first inclined surface 421 and the vertical surface is about 10°, so that the interference amount of tan 10° is reduced when the water passing pipe 22 is turned, and the effect of smooth turning is achieved. Regarding the connection between the shelf 2 and the water passing pipe 22, in the embodiment, the positioning member 221 is arranged at the position close to the water inlet end of the water passing pipe 22. Thus, when the shelf 2 is in the first position, the water inlet end of the water passing pipe 22 is not positioned and is easy to sag under the action of gravity, which affects the alignment and connection of the water inlet end of the water passing pipe 22 and the water outlet 41. Therefore, as shown in FIG. 4, the shelf 2 has a resting portion 20. When the water passing pipe 22 corresponds to the water outlet 41, the portion adjacent to the water inlet end of the water passing pipe 22 is rested on the resting portion 20, so that the water passing pipe 22 is positioned in the up-down direction. The water supply pipe 4 is provided with a vertically extending slide 43, and the water outlet 41 is located in the slide 43 or the end of the slide 43. The water inlet end of the water passing pipe 22 can slide along the slide 43, so as to guide the water passing pipe 22, thereby improving the accuracy of the connection between the water passing pipe 22 and the water outlet 41. The slide 43 is in the shape of a horn which is reduced in diameter along the direction in which the water passing pipe 22 moves to the water outlet 41. In the embodiment, the slide 43 is reduced in size in the left-right direction from bottom to top, so that the water passing pipe 22 can smoothly enter the slide 43. When the water passing pipe 22 corresponds to the water outlet 41, the water passing pipe 22 is positioned in the left-right direction relative to the slide 43. In the embodiment, as shown in FIGS. 11-13, two vertically extending guide strips 44 are symmetrically arranged on the left and right sides of the water outlet 41, and the area between the two guide strips 44 is the slide 43. Each guide strip 44 is inclined toward the water outlet 41 along the direction in which the water passing pipe 22 moves to the water outlet 41, so as to form the slide 43 in the shape of a horn. Each guide strip 44 includes a downstream segment 441 and an upstream segment 442 which are arranged in sequence and connected along the direction in which the water passing pipe 22 moves to the water outlet 41. The inclination angle of the downstream segment 441 is greater than that of the upstream segment 442, so as to further improve the size of the lower part of the slide 43 in the left-right direction, thereby facilitating the water passing pipe 22 to enter the slide 43. Two guide blocks 224 are symmetrically arranged on the outer peripheral wall of the water inlet end of the water pipe 22, and a guide groove 443 is arranged on the side wall of the slide 43 (i.e. the guide strip 44) along the length direction of the guide strip 44, and the guide blocks 224 slide along the guide groove 443 of a guide strip 44. The width of the guide groove 443 gradually decreases along the direction of movement of the water pipe 22 to the water outlet 41, so as to facilitate the entry of the guide blocks 224 into the guide groove 443. When the water pipe 22 corresponds to the water outlet 41, the guide blocks 224 are positioned relative to the guide groove 443 in the front-rear direction. The guide blocks 224 of the present embodiment are V-shaped, and include a first part 2241 and a second part 2242, and the included angle between the first part 2241 and the second part 2242 is obtuse, which is good for positioning with the guide groove 443. As shown in FIGS. 17 and 18, the cabinet 1 is provided with a second spraying member 32, which can adopt an existing spraying arm structure and can rotate around its axis in the cabinet 1, and the nozzle of the second spraying member 32 faces the bowl rack 3. The second spraying member 32 is located below the bowl rack 3, and the lower part of the water supply pipe 4 is provided with a resting table 45, which is located above the second spraying member 32. When the shelf 2 is in the second position, the bottom of the water pipe 22 rests on the resting table 45, so as to prevent the water pipe 22 from being in a vertical state when the shelf 2 is in the second position, thereby interfering with the rotation of the second spraying member 32. The shelf 2 is provided with a first limiting part 26, and the bowl rack 3 is provided with a second limiting part 34. When the shelf 2 is in the second position, the first limiting part 26 abuts against the second limiting part 34, and the shelf 2 is located above the second spraying member 32, so as to prevent the shelf 2 from interfering with the rotation of the second spraying member 32 when the shelf 2 is in the second position. The bowl rack 3 is a hollow structure composed of a plurality of rib strips, and the second limiting part 34 is one of the rib strips of the bowl rack 3. Regarding the water outlet 41, as shown in FIGS. 11 and 12, the orientation of the water outlet 41 can be inclined or horizontal, and the orientation of the water outlet 41 of the present embodiment is inclined, and the included angle with the horizontal plane is about 25°. When the shelf 2 is in the second position, the water outlet 41 can be in a closed state or an open state. The closed state means that water cannot flow out of the water outlet 41, and the open state means that water can flow out of the water outlet 41. In other words, the water outlet 41 has two working states: in the first working state, the water inlet end of the water passing pipe 22 is connected to the water outlet 41 of the water supply pipe 4, that is, the water outlet 41 is connected to the spray assembly and supplies water to the spray assembly, and the water sprayed by the spray assembly is used to clean the articles in the cleaning machine; in the second working state, the water inlet end of the water passing pipe 22 is disconnected from the water outlet 41 of the water supply pipe 4, that is, the water outlet 41 is disconnected from the spray assembly, and the water outlet 41 is used as a nozzle to spray the articles in the cleaning machine, that is, the water outlet 41 can still supply water to flow out, and at this time, the water outlet 41 is used as a nozzle to spray the articles in the cleaning machine, and because the orientation of the water outlet 41 is fixed after being manufactured, the articles in a specific part can be locally washed more intensively. The water inlet end of the water passing pipe 22 of the embodiment is connected to the water outlet 41 of the water supply pipe 4 in the horizontal direction, and the water inlet end of the water passing pipe 22 of the embodiment can also be connected to the water outlet 41 of the water supply pipe 4 in the vertical direction. Because the spray holes of the spray assembly of the embodiment are oriented towards the shelf 2, when the water outlet 41 is in the first working state, the shelf 2 is located in the water spraying path of the spray assembly; and when the water outlet 41 is in the second working state, the bowl rack 3 is located in the water flow path of the water outlet 41, the water outlet 41 sprays from top to bottom, and the second spray member 32 sprays from bottom to top, and the two cooperate to achieve good cleaning effect on the tableware in the bowl rack 3. When the shelf 2 is located in the first position, it is in a cleaning state, and the spray assembly is connected to the water outlet 41, so that the water outlet 41 is in the first working state; when the shelf 2 is located in the second position, it is in a non-cleaning state, and the spray assembly is disconnected from the water outlet 41, so that the water outlet 41 is in the second working state. The water outlet 41 is provided with a separation rib 411, so as to separate the water outlet 41 into a plurality of water outlet holes 412. Different water outlet holes 412 are used to clean different areas of the bowl rack 3, and at least two of the water outlet holes 412 have different orientations. It is explained here that the spray assembly is not the only component that can spray water on the shelf 2, and the water outlet 41 is not the only component that can spray water on the bowl rack 3, and various spray structures can be used to cooperate with cleaning. As can be seen from the above, no matter whether the shelf 2 is located in the first position or the second position, the shelf 2 and the spray assembly are located in the inner cavity 10 of the box body 1. Embodiment 2 The difference between the embodiment and the embodiment 1 is that the structure of the guide rail 24 is different, and the other parts can be referred to the embodiment 1. As shown in Figs. 20-23, the height of the connecting member 31 is consistent with the height of the water outlet 41, and the guide rail 24 comprises a straight section 241 extending straight and an inclined section 242 extending obliquely, the front end of the inclined section 242 is connected with the rear end of the straight section 241 when the shelf 2 is in the first position, the straight section 241 extends in the front-rear direction, the inclined section 242 inclines upward from front to back, and the connecting member 31 extends into the inclined section 242. With this structure of the guide rail 24, when the shelf 2 is turned over, the water pipe 22 will not interfere with the water supply pipe 4. Embodiment 3 As shown in Figs. 24 and 25, the difference between this embodiment and Embodiment 1 is that: 1. In this embodiment, the shelf 2 is turned over in front: When the shelf 2 is in the first position, the connecting member 31 is adjacent to the front end of the guide rail 24, and when the shelf 2 is in the second position, the shelf 2 and the spray assembly are both located between the front wall of the inner cavity 10 and the bowl rack 3, i.e. the shelf 2 and the spray assembly are both located in the front part of the inner cavity 10 and the front side of the bowl rack 3. In this case, the shelf 2 is turned over in front, and because the water supply pipe 4 is generally arranged at the rear of the cabinet 1, turning the shelf 2 to the front side will not make the rear of the cabinet 1 too crowded; in addition, turning the shelf 2 to the front side will not affect the user's vision and the experience of placing tableware. In this scheme, the guide rail 24 extends straight, the connecting member 31 is located obliquely below the water outlet 41 of the water supply pipe 4, and the shelf 2 is turned over in front, so there will be no interference between the water pipe 22 and the water supply pipe 4. 2. In this embodiment, the shelf 2 is not supported on the support portion 33, but is supported on the bowl rack 3 by supporting the guide rail 24 on the top of the bowl rack 3 when the shelf 2 is in the first position, so that the shelf 2 is supported on the bowl rack 3, the guide rail 24 extends in the front-rear direction, and has a large contact area with the bowl rack 3, so that the stability of the shelf 2 is good. The "horizontal" mentioned above includes that the component extends straight in the horizontal direction, i.e. the two ends of the component are in the same horizontal plane, but is not limited to this direction, as long as the overall extension direction of the component is in the horizontal direction, such as the overall extension direction of the component is in the front-rear or left-right direction, but the two ends of the component are not in the same horizontal plane. Similarly, "vertical" includes that the component extends straight in the vertical direction, i.e. the two ends of the component are in the same plumb plane, but is not limited to this direction, as long as the overall extension direction of the component is in the vertical direction, such as the overall extension direction of the component is in the up-down direction, but the two ends of the component are not in the same plumb plane. In the description of the application, it should be understood that the terms "center", "longitudinal", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, since the disclosed embodiments of the application can be arranged in different directions, so these orientation-indicating terms are only illustrative and should not be regarded as limiting, such as "upper", "lower" do not necessarily mean opposite or consistent with the direction of gravity. The "fluid communication" referred to in the present application refers to the spatial positional relationship between two components or parts (hereinafter collectively referred to as first part, second part), i.e. the fluid (gas, liquid or mixture of both) can flow or / and be transported from the first part to the second part along the flow path, which can be directly connected between the first part and the second part, or indirectly connected between the first part and the second part through at least one third party, which can be a fluid passage such as a pipe, channel, conduit, flow guide, hole, groove, etc., or a chamber allowing fluid flow or a combination thereof.

Claims

1. A cleaning machine comprising a cabinet (1) having an inner cavity (10) with a top or side opening, and the inner cavity (10) of the cabinet (1) is partially used as a receiving space; a rack assembly arranged in the inner cavity (10) of the cabinet (1), the rack assembly comprising a shelf (2) and a rack (3), the shelf (2) being switchable between a first position and a second position, when the shelf (2) is in the first position, the shelf (2) is above the rack (3), and when the shelf (2) is in the second position, the shelf (2) is received in the receiving space; characterized in that further comprising a water supply pipe (4) provided with a water outlet (41); a water pumping mechanism for supplying water to the water supply pipe (4); a spraying assembly connected to the shelf (2) and movable with the shelf (2), when the shelf (2) is in the first position, the spraying assembly is in fluid communication with the water outlet (41), and when the shelf (2) is in the second position, the spraying assembly is in fluid disconnection with the water outlet (41).

2. The cleaning machine of claim 1, wherein: When the shelf (2) is in the first position, the shelf (2) is horizontally placed above the rack (3), and when the shelf (2) is in the second position, the shelf (2) is vertically received in the receiving space.

3. The cleaning machine of claim 1, wherein: The receiving space is located on one side of the rack (3).

4. The cleaning machine of claim 2, wherein: Further comprising a connecting piece (31) capable of being located in the cabinet (1), the shelf (2) is connected to the connecting piece (31), the shelf (2) can be rotated to a horizontal state or a vertical state, and the shelf (2) in the vertical state can be moved up and down to one side of the rack (3) or above the rack (3).

5. The cleaning machine of claim 4, wherein: The connecting piece (31) is in the shape of a rod with an axis (S) extending in the horizontal direction, and the shelf (2) can be rotated to the horizontal state or the vertical state around the axis (S) of the connecting piece (31), and the shelf (2) in the vertical state can be moved up and down relative to the connecting piece (31) to one side of the rack (3) or above the rack (3).

6. The cleaning machine of claim 5, wherein: The axis (S) of the connecting piece (31) extends in the left-right direction; or the axis (S) of the connecting piece (31) extends in the front-rear direction.

7. The cleaning machine of claim 6, wherein: Further comprising a guide rail (24) capable of being located in the cabinet (1), one end of the connecting piece (31) extends into the guide rail (24), and when the shelf (2) is in the vertical state, the guide rail (24) extends vertically and is in sliding fit with the connecting piece (31).

8. The cleaning machine of claim 7, wherein: The guide rail (24) is arranged on the shelf (2), and the connecting piece (31) is relatively fixedly mounted on the cabinet (1) or the rack (3), and when the shelf (2) is in the first position, the guide rail (24) extends horizontally.

9. The cleaning machine of claim 7, wherein: The guide rail (24) is arranged on the rack (3) and extends vertically, and the connecting piece (31) is mounted on the shelf (2).

10. The cleaning machine of claim 8, wherein: The axis (S) of the connecting piece (31) extends in the left-right direction, and when the shelf (2) is in the first position, the guide rail (24) extends in the front-rear direction.

11. The cleaning machine of claim 10, wherein: The connecting piece (31) is adjacent to the front end of the guide rail (24) when the shelf (2) is in the first position, and the shelf (2) and the spraying assembly are located between the front wall of the bowl rack (3) and the inner cavity (10) when the shelf (2) is in the second position.

12. The cleaning machine of claim 11, wherein: The guide rail (24) extends horizontally, and the connecting piece (31) is located obliquely below the water outlet (41) of the water supply pipe (4).

13. The cleaning machine of claim 10, wherein: The connecting piece (31) is adjacent to the rear end of the guide rail (24) when the shelf (2) is in the first position, and the shelf (2) and the spraying assembly are located between the rear wall of the bowl rack (3) and the inner cavity (10) when the shelf (2) is in the second position.

14. The cleaning machine of claim 13, wherein: The height of the connecting piece (31) is consistent with the height of the water outlet (41), and the guide rail (24) comprises a horizontal section (241) extending horizontally and an inclined section (242) extending obliquely, the front end of the inclined section (242) is connected to the rear end of the horizontal section (241) when the shelf (2) is in the first position, the horizontal section (241) extends in the front-rear direction, and the inclined section (242) obliquely inclines from front to back, and the connecting piece (31) extends into the inclined section (242).

15. The cleaning machine of claim 13, wherein: The guide rail (24) extends horizontally, and the connecting piece (31) is located obliquely below the water outlet (41) of the water supply pipe (4).

16. The cleaning machine of claim 15, wherein: The spraying assembly comprises a water passing pipe (22) for conveying water flow and a spraying hole for spraying water in the water passing pipe (22), the water passing pipe (22) is installed on the shelf (2), and the water passing pipe (22) extends horizontally when the shelf (2) is in the first position, and the water passing pipe (22) is connected to the water outlet (41) and is in fluid communication; when the shelf (2) is in the second position, the water passing pipe (22) extends vertically, and the water passing pipe (22) is disconnected from the water outlet (41) and is in fluid communication.

17. The cleaning machine of claim 16, wherein: When the shelf (2) is in the first position, the water passing pipe (22) can move relative to the shelf (2) in the front-rear direction.

18. The cleaning machine of claim 17, wherein: A positioning piece (221) is arranged on the outer circumferential wall of the water passing pipe (22), the positioning piece (221) has a positioning groove (222) extending in the length direction of the water passing pipe (22), a positioning portion (25) is arranged on the shelf (2) and is constrained in the positioning groove (222), the positioning groove (222) and the positioning portion (25) can be relatively displaced, and the positioning portion (25) is always located in the positioning groove (222). Alternatively, a positioning piece (221) is arranged on the shelf (2), the positioning piece (221) has a positioning groove (222) extending in the length direction of the water passing pipe (22), and a positioning portion (25) is arranged on the outer circumferential wall of the water passing pipe (22) and is constrained in the positioning groove (222), the positioning groove (222) and the positioning portion (25) can be relatively displaced, and the positioning portion (25) is always located in the positioning groove (222).

19. The cleaning machine of claim 17, wherein: The front side wall of the water supply pipe (4) is provided with a convex part (42), the water outlet (41) is arranged on the convex part (42), and the wall surface of the convex part (42) is a first inclined surface (421) inclined downward from top to bottom.

20. The cleaning machine of claim 8, wherein: When the shelf (2) is in the first position, the shelf (2) is supported on the bowl rack (3).

21. The cleaning machine of claim 20, wherein: The connecting piece (31) is arranged on the top of the bowl rack (3), and when the shelf (2) is in the first position, the guide rail (24) is supported on the top of the bowl rack (3).

22. The cleaning machine of claim 21, wherein: The opposite sides of the shelf (2) are provided with the guide rail (24), and correspondingly, the connecting piece (31) has two.

23. The cleaning machine of claim 5, wherein: The connecting piece (31) is located on the top of the bowl rack (3), and when the shelf (2) is in the second position, the connecting piece (31) is lower than the highest point of the shelf (2).

24. The cleaning machine of claim 5, wherein: The cross section of the bowl rack (3) is square, and the connecting piece (31) is arranged adjacent to the corner of the bowl rack (3).

25. The cleaning machine of any one of claims 1-14, 20-23, wherein: The spray assembly comprises a water passing pipe (22) for conveying water flow and a spray hole for spraying water in the water passing pipe (22), the water passing pipe (22) is mounted on the shelf (2), when the shelf (2) is in the first position, the water passing pipe (22) extends horizontally, and the water passing pipe (22) is connected with the water outlet (41) and is in fluid communication; when the shelf (2) is in the second position, the water passing pipe (22) extends vertically, and the water passing pipe (22) is separated from the water outlet (41) and is in fluid disconnection.

26. The cleaning machine of claim 25, wherein: The water supply pipe (4) is provided with a vertically extending slide (43), and the water outlet (41) is located in the slide (43) or the end of the slide (43), and the water inlet end of the water passing pipe (22) can slide along the slide (43).

27. The cleaning machine of claim 26, wherein: The slide (43) is in the shape of a horn mouth which is reduced in diameter along the direction of the water passing pipe (22) moving to the water outlet (41), and when the water passing pipe (22) corresponds to the water outlet (41), the water passing pipe (22) is positioned in the front and back direction relative to the slide (43).

28. The cleaning machine of claim 26, wherein: The outer peripheral wall of the water inlet end of the water passing pipe (22) is symmetrically provided with two guide blocks (224), the side wall of the slide (43) is provided with a guide groove (443) along the length direction thereof, the guide blocks (224) correspondingly slide along the guide groove (443) of a guide strip (44); along the direction of the water passing pipe (22) moving to the water outlet (41), the width of the guide groove (443) gradually decreases, and when the water passing pipe (22) corresponds to the water outlet (41), the guide blocks (224) are positioned in the front and back direction relative to the guide groove (443).

29. The rinser of claim 25, wherein: The box body (1) is provided with a second spray piece (32), and the spray opening of the second spray piece (32) faces the bowl rack (3).

30. The rinser of claim 29, wherein: The second spraying member (32) is located below the bowl rack (3), and the lower part of the water supply pipe (4) is provided with a resting table (45) located above the second spraying member (32), and the water passing pipe (22) is rested on the resting table (45) when the shelf (2) is in the second position.

31. The cleaning machine of claim 29, wherein: The shelf (2) is provided with a first limiting part (26), and the bowl rack (3) is provided with a second limiting part (34), and the first limiting part (26) is abutted against the second limiting part (34) when the shelf (2) is in the second position, and the shelf (2) is located above the second spraying member (32).

32. The cleaning machine of claim 25, wherein: The spraying assembly is located on the side of the shelf (2) facing the bowl rack (3) when the shelf (2) is in the second position.

33. The cleaning machine of any one of claims 1-24, wherein: The vertical projection of the shelf (2) falls within the vertical projection of the bowl rack (3) when the shelf (2) is in the first position, and the vertical projection area of the shelf (2) accounts for 90%-98% of the vertical projection area of the bowl rack (3).

34. A cleaning machine comprising a cabinet (1) having an inner cavity (10) with a top or side opening, and the inner cavity (10) of the cabinet (1) is partially used as a receiving space; a bowl rack assembly arranged in the inner cavity (10) of the cabinet (1), the bowl rack assembly comprising a shelf (2) and a bowl rack (3), the shelf (2) being switchable between a first position and a second position, the shelf (2) being located above the bowl rack (3) when the shelf (2) is in the first position, and the shelf (2) being received in the receiving space when the shelf (2) is in the second position; characterized in that further comprising a water supply pipe (4) provided with a water outlet (41); a water pumping mechanism for supplying water to the water supply pipe (4); a spraying assembly connected with the shelf (2) and movable with the shelf (2), the spraying assembly comprising a water passing pipe (22) for conveying water flow and spraying holes for spraying water in the water passing pipe (22), the water passing pipe (22) being mounted on the shelf (2) and movable relative to the shelf (2) in the front-rear direction; the spraying assembly is in fluid communication with the water outlet (41) when the shelf (2) is in the first position, and the spraying assembly is out of fluid communication with the water outlet (41) when the shelf (2) is in the second position.

35. The rinser of claim 34, wherein: The water passing pipe (22) is movable relative to the shelf (2) in the front-rear direction when the shelf (2) is in the first position.

36. The rinser of claim 34, wherein: The water passing pipe (22) extends horizontally when the shelf (2) is in the first position, and the water passing pipe (22) is in abutment with and in fluid communication with the water outlet (41); the water passing pipe (22) extends vertically when the shelf (2) is in the second position, and the water passing pipe (22) is out of abutment with and out of fluid communication with the water outlet (41).

37. The rinser of claim 34, wherein: The outer peripheral wall of the water passing pipe (22) is provided with a positioning member (221) having a positioning groove (222) extending along the length direction of the water passing pipe (22), the shelf (2) is provided with a positioning portion (25) constrained in the positioning groove (222), and the positioning groove (222) and the positioning portion (25) can produce relative displacement, and the positioning portion (25) is always located in the positioning groove (222); Alternatively, the shelf (2) is provided with a positioning member (221) having a positioning groove (222) extending along the length direction of the water passing pipe (22), and the outer peripheral wall of the water passing pipe (22) is provided with a positioning portion (25) constrained in the positioning groove (222), and the positioning groove (222) and the positioning portion (25) can produce relative displacement, and the positioning portion (25) is always located in the positioning groove (222).

38. The rinser of claim 34, wherein: When the shelf (2) is in the first position, the shelf (2) is horizontally placed above the bowl rack (3), and when the shelf (2) is in the second position, the shelf (2) is vertically stored in the storage space.

39. The rinser of claim 34, wherein: The storage space is located on one side of the bowl rack (3).

40. The rinser of claim 38, wherein: Further comprising a connecting member (31) capable of being located in the cabinet (1), the shelf (2) is connected with the connecting member (31), the shelf (2) can be rotated to a horizontal state or a vertical state, and the shelf (2) can be moved to one side of the bowl rack (3) or above the bowl rack (3) in the vertical state.

41. The rinser of claim 40, wherein: The connecting member (31) is in the shape of a rod with the axis (S) extending in the horizontal direction, and the shelf (2) can be rotated to a horizontal state or a vertical state around the axis (S) of the connecting member (31), and the shelf (2) can be moved up and down relative to the connecting member (31) to one side of the bowl rack (3) or above the bowl rack (3) in the vertical state; The cleaning machine further comprises a guide rail (24) provided on the shelf (2), the connecting member (31) is relatively fixedly installed on the cabinet (1) or the bowl rack (3), one end of the connecting member (31) extends into the guide rail (24), the guide rail (24) extends horizontally when the shelf (2) is in the first position, and the guide rail (24) extends vertically and is in sliding fit with the connecting member (31) when the shelf (2) is in the vertical state.

42. The rinser of claim 41, wherein: The axis (S) of the connecting member (31) extends in the left-right direction, and the guide rail (24) extends in the front-rear direction when the shelf (2) is in the first position; When the shelf (2) is in the first position, the connecting member (31) is adjacent to the rear end of the guide rail (24), and when the shelf (2) is in the second position, the shelf (2) and the spraying assembly are located between the rear wall surface of the bowl rack (3) and the inner cavity (10).

43. The rinser of claim 42, wherein: The guide rail (24) extends straight, and the connecting member (31) is located obliquely below the water outlet (41) of the water supply pipe (4); The connecting member (31) is located on the top of the bowl rack (3), and the connecting member (31) is lower than the highest point of the shelf (2) when the shelf (2) is in the second position; The connecting member (31) is located on the top of the bowl rack (3), and the connecting member (31) is lower than the highest point of the shelf (2) when the shelf (2) is in the second position; The cross section of the bowl rack (3) is square, and the connecting piece (31) is arranged adjacent to a corner of the bowl rack (3).

44. The rinser of claim 43, wherein: The front side wall of the water supply pipe (4) is provided with a protrusion (42), the water outlet (41) is arranged on the protrusion (42), and the wall surface of the protrusion (42) is a first inclined surface (421) inclined downward from top to bottom. The wall surface of the water inlet end of the water passing pipe (22) is a second inclined surface (223) capable of being inclined surface matched with the first inclined surface (421).

45. The rinser according to any one of claims 34-44, characterized by: When the shelf (2) is in the first position, the shelf (2) is supported on the bowl rack (3).

46. The cleaning machine of any one of claims 34-44, wherein: The water supply pipe (4) is provided with a vertically extending slide (43), and the water outlet (41) is located in the slide (43) or the end of the slide (43). The water inlet end of the water passing pipe (22) can slide along the slide (43).

47. The rinser of claim 46, wherein: The slide (43) is in the shape of a horn that is reduced in diameter along the direction of movement of the water passing pipe (22) to the water outlet (41). When the water passing pipe (22) corresponds to the water outlet (41), the water passing pipe (22) is positioned relative to the slide (43) in the left-right direction.

48. The rinser of claim 46, wherein: The outer peripheral wall of the water inlet end of the water passing pipe (22) is symmetrically provided with two guide blocks (224), and the side wall of the slide (43) is provided with a guide groove (443) along the length direction thereof. The guide blocks (224) correspondingly slide along the guide groove (443) of a guide strip (44). Along the direction of movement of the water passing pipe (22) to the water outlet (41), the width of the guide groove (443) gradually decreases. When the water passing pipe (22) corresponds to the water outlet (41), the guide blocks (224) are positioned relative to the guide groove (443) in the front-rear direction.

49. The cleaning machine of any one of claims 36-44, wherein: The box body (1) is provided with a second spraying member (32), and the nozzle of the second spraying member (32) faces the bowl rack (3). The second spraying member (32) is located below the bowl rack (3), and the lower part of the water supply pipe (4) is provided with a resting table (45). The resting table (45) is located above the second spraying member (32). When the shelf (2) is in the second position, the bottom of the water passing pipe (22) is rested on the resting table (45).

50. The cleaning machine of any one of claims 34-44, wherein: When the shelf (2) is in the second position, the spraying assembly is located on the side of the shelf (2) facing the bowl rack (3).

51. The cleaning machine of any one of claims 34-44, wherein: When the shelf (2) is in the first position, the vertical projection of the shelf (2) falls within the vertical projection of the bowl rack (3), and the vertical projection area of the shelf (2) accounts for 90%-98% of the vertical projection area of the bowl rack (3).

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