Bottom spray structure of dishwasher and dishwasher

Abstract

The present invention discloses a bottom spray structure of a dishwasher and a dishwasher, wherein the bottom spray structure of the dishwasher comprises a base, wherein the base is concavely formed with a waterway groove opening upward and is provided with a water source interface; a cover member, wherein the cover member is fixedly connected to the base and covers the opening of the waterway groove, so that the cover member cooperates with the base to form a lower water supply pipeline, the water source interface is connected to the water supply pipeline, and the cover member is further provided with a spray arm mounting seat connected to the lower water supply pipeline; and a lower spray arm, wherein the lower spray arm is rotatably mounted on the spray arm mounting seat. The waterway of the bottom spray structure of the dishwasher of the present application occupies little space.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen appliances, and in particular to a bottom spray structure of a dishwasher and a dishwasher having the bottom spray structure of the dishwasher. Background Art

[0002] Existing dishwashers usually rinse and clean dishes in the dishwasher by means of spray structures arranged at the top and bottom, wherein the spray structure at the bottom plays a major role in the spraying process. In the existing dishwashers, the waterway design of the spray structure at the bottom of the dishwasher is usually separately installed with fixed pipes, which occupies space. Summary of the invention

[0003] The main purpose of the present invention is to provide a bottom spray structure of a dishwasher, aiming to avoid the water channel design at the bottom from occupying space.

[0004] To achieve the above-mentioned purpose, the bottom spray structure of the dishwasher proposed in the present invention comprises:

[0005] A base, wherein the base is concavely formed with a water channel groove opening upward and provided with a water source interface;

[0006] a cover member, the cover member being fixedly connected to the base and covering the opening of the water channel groove, so that the cover member cooperates with the base to form a lower water supply pipeline, the water source interface is connected to the water supply pipeline, and the cover member is further provided with a spray arm mounting seat connected to the lower water supply pipeline; and

[0007] A lower spray arm is rotatably mounted on the spray arm mounting seat.

[0008] The present application forms a water channel groove on the base, and forms a lower water supply pipeline through a sealing cover member fixedly connected to the base. Thus, the water channel is directly formed and integrated on the base, which can simplify the water channel structure and occupy less space.

[0009] Optionally, the base includes a base body and a sealing rib, the water channel groove is formed on the base body, the sealing rib is connected to the bottom wall of the water channel groove and surrounds the side wall of the water channel groove, and the upper end surface of the sealing rib is sealed and connected to the lower surface of the covering member to form the water supply pipeline.

[0010] In this embodiment, by providing the sealing ribs, the lower water supply pipeline is more airtight, less likely to leak, and easier to assemble.

[0011] Optionally, the bottom spray structure of the dishwasher also includes a slag discharge system installed on the base body, a slag discharge channel is formed between the sealing rib and the side wall of the water channel groove, the sealing rib is provided with a flushing hole connecting the lower water supply pipeline and the slag discharge channel, and the base body is provided with a slag discharge hole connecting the slag discharge system and the slag discharge channel.

[0012] In this embodiment, the flushing hole can flush the residue in the slag discharge channel into the slag discharge system during use, thereby improving the cleaning effect.

[0013] The present invention also proposes a dishwasher, comprising the bottom spray structure of the dishwasher, an inner tank, a water channel assembly and an upper spray arm as described above, the inner tank cover is arranged on the base, the water channel assembly comprises the lower water supply pipe and an upper water supply pipe intersecting and communicating with the lower water supply pipe, the upper water supply pipe is installed on the inner tank, and the upper spray arm is rotatably installed on the water outlet end of the upper water supply pipe.

[0014] Optionally, a lower water inlet communicating with the lower water supply pipeline and an upper water inlet communicating with the upper water supply pipeline are formed at the intersection of the lower water supply pipeline and the upper water supply pipeline;

[0015] The dishwasher also includes a diverter assembly, which includes a driving member and a diverter plate. The driving member can drive the diverter plate to rotate, and the diverter plate extends into the intersection of the lower water supply pipeline and the upper water supply pipeline. When the diverter plate rotates, it can simultaneously open the lower water inlet and the upper water inlet, or it can block one of the lower water inlet and the upper water inlet.

[0016] The technical solution of the present invention is to set a diverter component in the dishwasher. The diverter component has a diverter plate that can extend into the water channel component. The lower water inlet and the upper water inlet are opened and closed by the diverter plate, thereby realizing pressure regulation in various cleaning modes of the dishwasher, thereby improving the washing effect of the dishwasher and having the advantages of simple structure and low cost.

[0017] The dishwasher further comprises a middle spraying member, the middle spraying member is connected to the upper water supply pipeline, and the middle spraying member is located between the lower spraying arm and the upper spraying arm.

[0018] In this embodiment, by providing a middle spray part, three-dimensional spray cleaning is achieved in the upper, middle and lower parts of the dishwasher, so that the washing effect of the dishes in the dishwasher is better.

[0019] Optionally, the middle spraying member is a flat structure and extends along the inner wall surface of the inner container.

[0020] In this embodiment, for a dishwasher with larger height and left-right length dimensions and smaller front-to-back depth dimensions, the middle spray part is designed to have a flat structure, which can make it easy to assemble, occupy less space, and achieve three-dimensional spray cleaning of the dishwasher.

[0021] Optionally, a mutually cooperating positioning structure is provided between the middle spraying member and the inner container.

[0022] In this embodiment, the positioning structure ensures that the connection structure of the middle spray piece is stable and will not be deformed.

[0023] Optionally, a fixed structure that cooperates with each other is provided between the upper water supply pipeline and the inner tank.

[0024] In this embodiment, the upper water supply pipeline connection structure is stabilized by a national structure.

[0025] Optionally, at least two lower water supply pipelines are provided, the number of the lower spray arms corresponds to the number of the lower water supply pipelines, and the lower spray arms are arranged at intervals in the left-right length direction of the inner tank.

[0026] In this embodiment, for a desktop dishwasher with a larger height and left-right length and a smaller front-to-back depth, the two lower spray arms are arranged at intervals in the left-right length direction, which can reduce dead corners during the cleaning process and improve cleaning efficiency.

[0027] Optionally, the water source interface is opened in one of the lower water supply pipelines.

[0028] In this embodiment, the water source interface is arranged in a lower water supply pipeline, which can simplify the structural design and realize a variety of spray modes.

[0029] Optionally, driving holes are provided at both ends of the lower spray arm in the length direction, the opening direction of the driving holes is set at an acute angle to the rotation plane of the lower spray arm, and the driving holes at both ends of the lower spray arm in the length direction generate driving forces in opposite directions when spraying.

[0030] In this embodiment, by increasing the driving force of the lower spray arm, the lower spray arm can also rotate quickly under low water pressure, thereby improving the cleaning efficiency.

[0031] Optionally, the dishwasher further comprises a slag discharge system installed on the base, the slag discharge system is located between the two lower spray arms, and the lower spray arms are further provided with slag collecting holes opening toward the slag discharge system.

[0032] In this embodiment, the residue collection hole pushes the food residue into the residue discharge system, which can improve the cleaning efficiency.

[0033] Optionally, the lower water supply pipeline is further provided with a flushing hole opening toward the slag discharge system, and the diverter plate can open or block the flushing hole when rotating.

[0034] In this embodiment, the flushing hole assists in flushing the food residues into the residue discharge system, which can further improve the cleaning efficiency.

[0035] Optionally, the diverter piece is arranged in an arc shape, and the inner wall of the water channel assembly is formed with an arc-shaped abutment surface adapted to the diverter piece.

[0036] In this embodiment, the diversion component has a simple structure and good sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0038] Figure 1 It is a structural schematic diagram of a bottom spray structure of a dishwasher according to an embodiment of the present invention;

[0039] Figure 2 for Figure 1 A schematic diagram of the structure of the bottom spray structure of the dishwasher without the lower spray arm;

[0040] Figure 3 for Figure 1 A schematic diagram of the structure of the bottom spray structure of the dishwasher without the lower spray arm and the cover member;

[0041] Figure 4 for Figure 1 Another structural schematic diagram of the bottom spray structure of the dishwasher without the lower spray arm and the cover member;

[0042] Figure 5 A structural schematic diagram of a partial structure of a dishwasher according to an embodiment of the present invention from a front view perspective;

[0043] Figure 6 for Figure 5 Schematic diagram of the internal structure of the dishwasher;

[0044] Figure 7 for Figure 5 A schematic diagram of the top view of the lower spray arm of the dishwasher;

[0045] Figure 8 for Figure 6 The schematic diagram of the structure after removing the upper water supply pipe;

[0046] Fig. 9 for Figure 8 Schematic diagram of the internal structure of the structure in;

[0047] Fig.10 for Fig. 9 A structural schematic diagram of another perspective of the structure in;

[0048] Fig.11 for Figure 8 The structure in the figure is equipped with a schematic diagram of a diversion component;

[0049] Fig.12 for Fig.11 A schematic diagram of the structure of the shunt component in FIG.

[0050] Fig.13 for Fig.11 A schematic diagram of the structure from another perspective, in which the lower water inlet and the upper water inlet are both connected;

[0051] Fig.14 for Fig.11 A schematic diagram of the structure from another perspective, in which the lower water inlet and the upper water inlet on the right are connected;

[0052] Fig.15 for Fig.11 A schematic diagram of the structure from another perspective, in which the lower water inlet and the upper water inlet on the right are connected;

[0053] Fig.16 for Fig.11 A schematic diagram of the structure from another perspective, in which the upper water inlet is blocked;

[0054] Fig.17 for Fig.11 A schematic diagram of the structure from another perspective, in which the upper water inlet is blocked;

[0055] Fig.18 for Fig.11 A schematic diagram of the structure from another perspective, in which the lower water inlet on the right is blocked;

[0056] Fig.19 for Fig.11 A schematic diagram of the structure from another perspective, in which the lower water inlet on the right is blocked.

[0057] Description of Figure Numbers:

[0058] Label name Label name 100 chassis 122 Pipe socket 110 Base 130 Liner 110a Base body 200 Waterway components 110b Sealing rib 210 Lower water supply pipeline 110c Slag discharge channel 220 Upper water supply pipeline 110d Slag hole 300 Lower spray arm 111 Water source interface 310 Drive hole 112 Waterway groove 320 Cleaning hole 112a Lower water inlet 330 Dead corner flushing hole 112b Upper water inlet 400 Upper spray arm 113 Mounting holes 500 Shunt Components 114 Flushing hole 510 Drive parts 115 Curved abutment surface 520 Shunt 120 Covering parts 600 Middle spray parts 121 Spray arm mounting bracket 700 Slag discharge system

[0059] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0060] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0063] Please refer to Figures 1 to 4 The present invention proposes a bottom spray structure of a dishwasher. In an embodiment of the present invention, the bottom spray structure of the dishwasher includes a base 110, a cover 120 and a lower spray arm 300, wherein the base 110 is concavely formed to form a waterway groove 112 with an opening, and is provided with a water source interface 111, the cover 120 is fixedly connected to the base 110 and closes the opening of the waterway groove 112, so that the cover 120 and the base 110 cooperate to form a lower water supply pipeline 210, the water source interface 111 is connected to the water supply pipeline 210, the cover 120 is also provided with a spray arm mounting seat 121 connected to the lower water supply pipeline 210, and the lower spray arm 300 is rotatably mounted on the spray arm mounting seat 121, and the cleaning water flows into the lower water supply pipeline 210 from the water source interface 111, and is sprayed out by the lower spray arm 300 through the spray arm mounting seat 121.

[0064] In the present application, the opening of the waterway groove 112 is arranged upward, and the cover 120 is fixedly connected to the upper surface of the base 110. Of course, in other embodiments, the opening of the waterway groove 112 can also be arranged downward, and the cover 120 is fixedly connected to the lower surface of the base 110. In this case, the spray arm mounting seat 121 is installed on the upper surface of the base 121. The cover 120 is plate-shaped and has an extended shape adapted to the waterway groove 112. The cover 120 and the base 110 can be fixed by welding or gluing.

[0065] In some embodiments, the base 110 includes a base body 110a and a sealing rib 110b, a water channel groove 112 is formed on the base body 110a, the sealing rib 110b is arranged on the bottom wall of the water channel groove 112 and surrounds the side wall of the water channel groove 112, and the upper end surface of the sealing rib 110b is sealed and connected to the lower surface of the cover member 120 to form a water supply pipeline 210. The present application preferably fixes the base 110 and the cover member 120 by welding, that is, the upper end surface of the sealing rib 110b and the cover member 120 can be fixed by hot-melt welding, and the edge of the cover member 120 abuts against the side wall of the water channel groove 112. The above-mentioned lower water supply pipe 210 is formed by the cover member 120, the sealing rib 110b and the base body 110a. Such a setting can ignore the situation where the sealing structure after welding is not firm and warping occurs due to the direct connection between the cover member 210 and the base body 110a, so that the sealing performance of the lower water supply pipe 210 is guaranteed, and the structure at the welding point will not be exposed to the outside and will not be directly flushed by the cleaning water sprayed by the lower spray arm 300. Such a connection structure is not easily damaged during long-term use.

[0066] In summary, the present application forms a water channel groove 112 on the base 110, and forms a lower water supply pipe 210 through a sealing cover 120 fixedly connected to the base 110. Thus, the water channel is directly formed and integrated on the base 110, which can simplify the water channel structure and occupy less space.

[0067] Furthermore, the bottom spray structure of the dishwasher also includes a slag discharge system 700 installed on the base body 110a, a slag discharge channel 110c is formed between the sealing rib 110b and the side wall of the water channel groove 112, the sealing rib 110b is provided with a flushing hole 114 connecting the lower water supply pipeline 210 and the slag discharge channel 110c, and the base body 110a is provided with a slag hole 110d connecting the slag discharge system 700 and the slag discharge channel 110c. It can be seen from the above content that in order to improve the stability of the entire lower water supply pipeline 210 structure, the present application does not need to directly set a sealing structure between the cover member 120 and the base body 110a, and a gap can be allowed between the edge of the cover member 120 and the base body 110a, thereby further providing a flushing hole 114, a slag discharge channel 110c and a slag hole 110d. Through such a setting, during use, food residues entering the slag discharge channel 110c can be pushed by the water flow flushed out of the flushing hole 114 and discharged into the slag discharge system 700 through the slag hole 110d, thereby further improving the cleaning effect.

[0068] Please refer to Figures 5 to 12 The present invention further provides a dishwasher, which includes a housing 100, a water channel assembly 200, a lower spray arm 300, an upper spray arm 400 and a diverter assembly 500.

[0069] The housing 100 includes the above-mentioned base 110, an inner tank 130 covering the base 110, and an outer shell (not shown) surrounding the inner tank 130, wherein the base 110 and the inner tank 130 cooperate to form a cleaning cavity (not shown), and a bowl basket rack (not shown) for placing tableware is also provided in the cleaning cavity. The dishwasher of the present application can stack at least two bowl basket racks in the upper and lower directions in the cleaning cavity, wherein the front side of the cleaning cavity has an opening, and the outer shell is also equipped with a door body (not shown) that can open and close the opening.

[0070] The water circuit assembly 200 includes the above-mentioned lower water supply pipe 210 and an upper water supply pipe 220 that intersects and connects with the lower water supply pipe 210, and the upper water supply pipe 220 is installed on the inner tank 130. The intersection of the lower water supply pipe 210 and the upper water supply pipe 220 is respectively formed with a lower water inlet 112a connected to the lower water supply pipe 210 and an upper water inlet 112b connected to the upper water supply pipe 220; it can be understood that the dishwasher of the present application is also equipped with a motor and a water pump on the base 110, and the water pump pumps the cleaning water from the water source interface 111 into the water circuit assembly 200.

[0071] The lower spray arm 300 of the present application is located at the bottom of the cleaning chamber, and the upper spray arm 400 is located at the upper part of the cleaning chamber. The lower spray arm 300 can be rotatably installed on the water outlet end of the lower water supply pipe 210 (that is, the above-mentioned spray arm mounting seat 121), and the upper spray arm 400 is rotatably installed on the water outlet end of the upper water supply pipe 220. The shape of the lower spray arm 300 and the upper spray arm 400 can be a straight line or a cross. Among them, in the structure of the dishwasher, the combination of the base 110, the cover 120 and the lower spray arm 300 adopts the bottom spray structure of the dishwasher in the above content, and in the dishwasher, in addition to the spray arm mounting seat 121 as the water outlet end for mounting the lower spray arm 300, the upper surface of the cover 120 is also provided with a pipe socket 122, and the upper water supply pipe 220 is a pipe body structure installed on the inner wall of the inner tank 130, and the lower end of the upper water supply pipe 220 is plugged and connected to the pipe socket 122.

[0072] The diverter assembly 500 includes a driving member 510 and a diverter plate 520. The driving member 510 can drive the diverter plate 520 to rotate. The diverter plate 520 extends into the water channel assembly 200 and is located at the intersection of the lower water supply pipeline 210 and the upper water supply pipeline 220. When the diverter plate 520 rotates, it can simultaneously open the lower water inlet 112a and the upper water inlet 112b, or it can block one of the lower water inlet 112a and the upper water inlet 112b. Among them, the driving member 510 of the present application is a driving motor, and the diverter 520 is directly fixedly connected to the output shaft of the driving motor, and the driving motor is fixed on the base body 110a, and the base body 110a is also provided with a mounting hole 113 connected to the waterway groove 112, and the mounting hole 113 is located exactly at the intersection of the lower water inlet 112a and the upper water inlet 112b, and the output shaft of the driving motor and the diverter 520 extend into the waterway groove 112 through the mounting hole 113. In this way, the driving motor drives the diverter 520 to rotate, and then the state of opening the lower water inlet 112a and the upper water inlet 112b at the same time, and the state of blocking one of the lower water inlet 112a and the upper water inlet 112b. Of course, in other embodiments, the driving member 510 may be a combination of a motor and a disk, the disk may include an active disk and a driven disk, the driven disk is located in the waterway groove 112, and the diverter plate 520 is fixedly installed on the driven disk, and the active disk is fixedly connected to the output shaft of the motor. In this driving scheme, the mounting hole 113 can be eliminated.

[0073] The technical solution of the present invention is to set a diverter component 500 in the dishwasher. The diverter component 500 has a diverter plate 520 that can extend into the water channel component 200. The diverter plate 520 is used to open and close the lower water inlet 112a and the upper water inlet 112b, thereby realizing pressure regulation in multiple cleaning modes of the dishwasher, thereby improving the washing effect of the dishwasher and having the advantages of simple structure and low cost.

[0074] In order to make the dishwasher of the present application have a better cleaning effect, the dishwasher also includes a middle spray part 600, which is connected to the upper water supply pipeline 220 and is located between the lower spray arm 300 and the upper spray arm 400. The middle spray part 600 of the present application is a flat structure and extends along the inner wall surface of the inner tank 130. The middle spray part 600 is shown in the figure as a long strip shape and is fixedly connected to the upper water supply pipeline 220. Of course, the middle spray part 600 can also be a cross shape. Through the above design, for a dishwasher with a smaller depth dimension in the front-to-back direction and a larger length dimension in the left-to-right direction, it is more convenient to install because the middle spray part 600 is smaller in size and occupies less space. The middle spray part 600 is located in the middle of the inner tank 130. During use, it cooperates with the upper spray arm 400 and the lower spray arm 300 to achieve three-dimensional washing of the tableware in the inner tank 130, and the cleaning effect is good. For the stability of the whole structure, there is a mutually cooperating positioning structure between the middle spray part 600 and the inner tank 130. There is a mutually cooperating fixing structure between the upper water supply pipeline 220 and the inner tank 130. Among them, the positioning structure and the fixing structure can be a snap connection structure or a screw connection structure. In the present application, there is a mutually cooperating positioning structure between the spray part 600 and the inner tank 130, so that the long strip-shaped middle spray arm is not easy to deform and warp, and the fixing structure between the upper water supply pipeline 220 and the inner tank 130 can adopt a snap connection structure to make it easy to install and the structure is stable.

[0075] In order to further improve the cleaning effect, at least two lower water supply pipes 210 are provided, and the number of lower spray arms 300 corresponds to the number of lower water supply pipes 210, and the lower spray arms 300 are arranged at intervals in the left and right length direction of the inner tank 130. The number of lower spray arms 300 shown in the drawings of the present application is two, and by arranging the two lower spray arms 300 at intervals in the left and right length direction of the inner tank 130, the structure of the present application is for a dishwasher with a smaller depth dimension in the front-to-back direction and a larger length dimension in the left and right length direction, while achieving three-dimensional spray cleaning, the cleaning dead angle is also smaller, and the cleaning effect is better.

[0076] In the present application, two lower water supply pipelines 210 are installed on the base 110, and the water source interface 111 is opened in one of the water supply pipelines 210. The water source interface 111 shown in the figure is opened in the lower water supply pipeline 210 on the right side. Through such a design, the water circuit design can be simplified and the overall structure can be simplified. It should be noted that since the cleaning water flows from the lower water supply pipeline 210 on the right side into other pipelines, the lower water inlet 112a of the lower water supply pipeline 210 on the right side should be the lower water outlet in a strict sense, and since the lower water supply pipeline 210 on the left side and the lower water supply pipeline 210 on the right side are symmetrically designed, for the sake of ease of introduction, the following content is still described with reference to the lower water inlet 112a. In combination with the above content, the present application drives the diverter plate 520 to rotate and control the lower water inlet 112a and the upper water inlet 112b to be fully connected and partially connected to achieve different cleaning modes and water pressure regulation. The specific process is as follows:

[0077] Please refer to Fig.11 and Fig.12 First, the diverter 520 of the present application is arc-shaped, and the inner wall of the waterway assembly 200 is formed with an arc-shaped abutment surface 115 adapted to the diverter 520. Furthermore, the two lower water inlets 112a and the upper water inlet 112b are designed to surround the mounting hole 113 at intervals. With such a design, the diverter 520 is an arc-shaped structure, and when it rotates, it can open and close the upper water inlet 112b and the lower water inlet 112a accordingly. The structure is relatively simple and the sealing performance is also high. Fig. 9 In the figure, the diverter plate 520 abuts against the inner wall surface of the water channel assembly 200 opposite to the upper water inlet 112b, and the diverter plate 520 does not block the upper water inlet 112b and the lower water inlet 112a. Then, the cleaning water enters one of the lower water supply pipes 210 through the water source interface 111 and can then enter the other lower water supply pipe 210 and the upper water supply pipe 220. In this way, the lower spray arm 300, the upper spray arm 400 and the middle spray part 600 can all spray, and it is in a three-dimensional flushing state.

[0078] In the three-dimensional flushing state, since all water channels are in the conductive state, the water pressure may be relatively low, causing the lower spray arm 300, which is the main spray component, to work in an inefficient manner. The present application also improves the design of the spray hole of the lower spray arm 300. Please refer to Figure 6 and Figure 7, wherein driving holes 310 are provided at both ends of the length direction of the lower spray arm 300, the opening direction of the driving hole 310 is set at an acute angle to the rotation plane of the lower spray arm 300, and the driving holes 310 located at both ends of the length direction of the lower spray arm 300 generate driving forces in opposite directions when spraying. It can be understood that the water spray holes on the lower spray arm 300 of the present application also include multiple cleaning holes 320, and the multiple cleaning holes 320 are spaced between two driving holes 310. Figure 7 The direction indicated by the middle arrow is the water spraying direction or the opening direction of the hole. The opening direction of the driving hole 310 is set at an acute angle to the rotation plane of the lower spray arm 300. Taking the figure as an example, it can be understood that the opening direction of the driving hole 310 is obliquely upward in space. Therefore, during the water spraying process of the driving hole 310, the reaction force on the lower spray arm 300 generated during the water spraying is obliquely downward. After the force is decomposed, this reaction force has a rotation plane force perpendicular to the lower spray arm 300 and a tangential force tangential to the circle where the driving hole 310 is located. The driving force generated by the driving holes 310 at both ends of the length direction of the lower spray arm 300 during the spraying is the tangential force. The tangential force directions of the driving holes 310 at both ends of the present application are opposite, that is, during the rotation of the lower spray arm 300, there will be two tangential forces superimposed to drive the lower spray arm 300 to rotate, and the driving hole 310 is located at the end, and the force arm is also the largest.

[0079] Please refer to Fig.14 and Fig.15 In this scheme, the driving member 510 drives the diverter plate 520 to rotate and block the lower water inlet 112a of the lower water supply pipeline 210 on the left. The washing water enters from the lower water supply pipeline 210 on the right and cannot enter the lower water supply pipeline 210 on the left. The washing water then enters the upper water supply pipeline 220 from the upper water inlet 112b, so that the upper spray arm 400, the middle spray member 600 and the lower spray arm 300 on the left can spray. In this mode, the water pressure is higher than that in the above-mentioned three-dimensional spray mode, and the flushing force is strengthened to a certain extent.

[0080] Please refer to Fig.16 and Fig.17 In this scheme, the driving member 510 drives the diverter plate 520 to rotate and block the upper water inlet 112b. The two lower water supply pipes 210 are both connected, and the cleaning water is sprayed by the two lower spray arms 300. In this mode, the water pressure is relatively high, and the tableware placed on the lower layer can be rinsed in particular.

[0081] Please refer to Fig.18 and Fig.19In this scheme, the driving member 510 drives the diverter plate 520 to rotate and blocks the lower water inlet 112a of the lower water supply pipe 210 on the right side. In this way, the cleaning water can only enter the lower water supply pipe 210 on the right side through the water source interface 111 and be sprayed out by the lower spray arm 300 on the right side. In this mode, the water pressure is the highest, and the tableware placed on the lower layer can be strongly rinsed.

[0082] The dishwasher of the present application realizes water pressure regulation through the above structural design, and has multiple cleaning modes, with good cleaning effect. Figure 7 The lower spray arm 300 is also provided with a dead angle flushing hole 330 opening outward, and the dead angle flushing hole 330 is located outside the driving hole 310 or at the end of the lower spray arm 300 relative to the driving hole 310. In the present application, a dishwashing powder box is also provided on the door of the dishwasher, and the washing water can be sprayed into the dishwashing powder box through the dead angle flushing hole 330, so that the dishwashing powder is fully mixed and dissolved, and the dead angle flushing hole 330 can also provide a certain amount of assistance for the rotation of the lower spray arm 300, and can also flush the corners of the inner tank 130 to avoid residue retention, further improving the flushing effect.

[0083] Furthermore, the flow divider 520 can open or block the flushing hole 114 when rotating. In the three-dimensional flushing mode, the flushing hole 114 will be closed by the flow divider 520 when the water path is fully connected and the upper water supply pipeline 220 is connected to prevent the water pressure from decreasing.

[0084] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A bottom spray structure of a dishwasher, characterized in that: The bottom spray structure of the dishwasher comprises: A base, wherein the base is concavely formed to form a waterway groove with an opening and is provided with a water source interface; a cover member, the cover member being fixedly connected to the base and covering the opening of the water channel groove, so that the cover member cooperates with the base to form a lower water supply pipeline, the water source interface is communicated with the lower water supply pipeline, and the cover member is further provided with a spray arm mounting seat communicated with the lower water supply pipeline; and A lower spray arm, wherein the lower spray arm is rotatably mounted on the spray arm mounting seat, and both ends of the lower spray arm in the length direction are provided with driving holes, and the water spray hole on the lower spray arm also includes a plurality of cleaning holes, and the plurality of cleaning holes are arranged at intervals between two of the driving holes; The base includes a base body and a sealing rib, the water channel groove is formed in the base body, the sealing rib is arranged on the bottom wall of the water channel groove and surrounds the side wall of the water channel groove, the upper end surface of the sealing rib is sealed and connected to the lower surface of the cover member, so that the lower water supply pipeline is formed by the cover member, the sealing rib and the base body.

2. The bottom spray structure of the dishwasher according to claim 1, characterized in that: The bottom spray structure of the dishwasher also includes a slag discharge system installed on the base body, a slag discharge channel is formed between the sealing rib and the side wall of the water channel groove, the sealing rib is provided with a flushing hole connecting the lower water supply pipeline and the slag discharge channel, and the base body is provided with a slag passing hole connecting the slag discharge system and the slag discharge channel.

3. A dishwasher, characterized in that: include: The bottom spray structure of the dishwasher according to any one of claims 1 to 2; An inner liner is covered on the base; A water channel assembly, the water channel assembly comprising the lower water supply pipeline and an upper water supply pipeline intersecting and communicating with the lower water supply pipeline, the upper water supply pipeline being installed in the inner tank; An upper spray arm is rotatably mounted on the water outlet end of the upper water supply pipeline.

4. The dishwasher according to claim 3, characterized in that A lower water inlet communicated with the lower water supply pipeline and an upper water inlet communicated with the upper water supply pipeline are formed at the intersection of the lower water supply pipeline and the upper water supply pipeline; The dishwasher also includes a diverter assembly, which includes a driving member and a diverter plate. The driving member can drive the diverter plate to rotate, and the diverter plate extends into the intersection of the lower water supply pipeline and the upper water supply pipeline. When the diverter plate rotates, it can simultaneously open the lower water inlet and the upper water inlet, or it can block one of the lower water inlet and the upper water inlet.

5. The dishwasher according to claim 3, characterized in that The dishwasher further comprises a middle spraying member, the middle spraying member is connected to the upper water supply pipeline, and the middle spraying member is located between the lower spraying arm and the upper spraying arm.

6. The dishwasher according to claim 5, characterized in that The middle spraying member is in a flat structure and extends along the inner wall surface of the inner container.

7. The dishwasher according to claim 5, characterized in that A mutually matching positioning structure is provided between the middle spraying part and the inner container; And / or, a mutually cooperating fixing structure is provided between the upper water supply pipeline and the inner tank.

8. The dishwasher according to claim 4, characterized in that At least two lower water supply pipelines are provided, the number of the lower spray arms corresponds to the number of the lower water supply pipelines, the water source interface is opened in one of the lower water supply pipelines, and the lower water inlet is formed between the lower water supply pipelines.

9. The dishwasher according to claim 8, characterized in that The lower spray arms are arranged at intervals in the left and right length directions of the inner container.

10. The dishwasher according to claim 8, characterized in that The opening direction of the driving hole is set at an acute angle with the rotation plane of the lower spray arm, and the driving holes located at both ends of the lower spray arm in the length direction generate driving forces in opposite directions when spraying.

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