CN219661612U - Spray arm structure of dish washer and dish washer - Google Patents

Abstract

The utility model discloses a spray arm structure of a dish washing machine and the dish washing machine. The spray arm structure of the dish washer comprises a top spray arm structure which is arranged at the upper part of the inner container of the dish washer and used for spraying washing liquid downwards; the bottom spray arm structure is arranged at the lower part of the inner container and is used for spraying the washing liquid upwards; the middle spray arm structure is arranged in the middle of the liner and comprises a water diversion component, an upper spray arm and a lower spray arm, wherein the upper spray arm and the lower spray arm are connected with the water diversion component, the water diversion component is connected with the top spray arm structure and the bottom spray arm structure, the water diversion component is used for conveying washing liquid for the upper spray arm and the lower spray arm, the upper spray arm is used for spraying washing liquid upwards, and the lower spray arm is used for spraying washing liquid downwards. The dish washer provided by the utility model comprises the spray arm structure.

Description

Spray arm structure of dish washer and dish washer

Technical Field

The utility model relates to the technical field of kitchen electricity, in particular to a spray arm structure of a dish washing machine and the dish washing machine.

Background

With the continuous rise of the living standard of people, household dish washers have gradually come into numerous families to replace manual washing of tableware. Among them, the home dishwasher is largely classified into a drop-down door type dishwasher, a drawer type dishwasher, and a tub type dishwasher according to a difference in a door opening form. The dishwasher has a substantially identical water flow system, with water circulating continuously in the dishwasher to spray the dishes. Specifically, water is firstly collected at the bottom of the liner, is sucked into the washing pump after being filtered, is discharged from the washing pump after being centrifugally pressurized, is then conveyed to each spray arm along a pipeline, is finally sprayed out from the spray holes on the spray arms to clean tableware, and is then collected back to the bottom of the liner, so that the cleaning of the tableware is completed.

The spray arm structure of the existing dish washer comprises a top spray arm, a middle spray arm and a lower spray arm, wherein the top spray arm, the middle spray arm and the lower spray arm are basically in a single spray arm form, and the spray direction is as follows: the lower spray arm sprays upwards (upwards sprays the lower bowl basket), the middle spray arm sprays upwards (upwards sprays the upper bowl basket), and the top spray arm sprays downwards (the top spray arm sprays the upper bowl basket downwards). The spraying mode lacks a mode of spraying the bowl basket from top to bottom, and when the bowl basket at the lower layer is only required to be cleaned, the washing dead angle in the dish washer can be easily formed, so that the overall cleaning effect and the cleaning efficiency are reduced. Meanwhile, as the spraying direction is mainly acted on the lower surface of the tableware all the time, the obtained washing on the upper surface is relatively less, so that the washing non-uniformity is generated, the spraying time is further required to be increased to achieve a better washing effect, and the use experience of a user is poor.

Accordingly, there is a need for a spray arm structure of a dishwasher to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to solve one of the problems in the prior art to at least a certain extent, and therefore, the utility model provides a spray arm structure of a dish washer, wherein a middle spray arm structure of the spray arm structure can spray washing liquid upwards and downwards at the same time, and the spray arm structure has a better washing effect on tableware and higher washing efficiency.

The above object is achieved by the following technical scheme:

a spray arm structure of a dishwasher, comprising:

the top spraying arm structure is arranged at the upper part of the inner container of the dish washer and is used for spraying washing liquid downwards;

the bottom spray arm structure is arranged at the lower part of the inner container and is used for spraying the washing liquid upwards;

the middle spray arm structure is arranged in the middle of the liner and comprises a water diversion component, an upper spray arm and a lower spray arm, wherein the upper spray arm and the lower spray arm are connected with the water diversion component, the water diversion component is connected with the top spray arm structure and the bottom spray arm structure, the water diversion component is used for conveying washing liquid for the upper spray arm and the lower spray arm, the upper spray arm is used for spraying washing liquid upwards, and the lower spray arm is used for spraying washing liquid downwards.

Optionally, the water diversion assembly comprises:

the spray arm water pipe comprises a spray arm body, wherein a first flow channel and a second flow channel are formed in the spray arm body, an upper interface connected with the upper spray arm is formed in the upper portion of the first end of the spray arm body, the upper interface is connected with the first end of the first flow channel, a lower interface connected with the lower spray arm is formed in the lower portion of the first end of the spray arm body, and the lower interface is connected with the first end of the second flow channel;

the spray arm seat comprises a mounting seat, wherein the mounting seat is arranged at the second end of the spray arm body, a first liquid separating runner, a second liquid separating runner and a third liquid separating runner which are all connected with the bottom spray arm structure are arranged on the mounting seat, the first liquid separating runner is connected with the second end of the first runner, the second liquid separating runner is connected with the second end of the second runner, and the third liquid separating runner is connected with the top spray arm structure.

Optionally, the bottom of mount pad is seted up all with first inlet, second inlet and the third inlet that end spray arm structure is connected, first liquid outlet and second liquid outlet have been seted up to one side of mount pad, the third liquid outlet has been seted up to the upper end of mount pad, first inlet with first liquid outlet is connected and is formed the second branch liquid runner, the second inlet with the second liquid outlet is connected and is formed first branch liquid runner, the third inlet with the third liquid outlet is connected and is formed the third branch liquid runner, first liquid outlet with the second end of second runner is connected, the second liquid outlet with the second end of first runner is connected.

Optionally, the middle spray arm structure further comprises a connecting piece, and the spray arm water pipe is connected with the spray arm seat through the connecting piece.

Optionally, the connecting piece includes the connector, first liquid mouth and second liquid mouth have been seted up on the connector, the one end of first liquid mouth with the second end of first runner is connected, the other end with first branch liquid runner is connected, the one end of second liquid mouth with the second end of second runner is connected, the other end with second branch liquid runner is connected.

Optionally, a first connecting portion is arranged on the first side of the connecting body, a second connecting portion is arranged at the second end of the spray arm water pipe, and the first connecting portion is connected with the second connecting portion through a screw.

Optionally, one of a first groove and a first protrusion is formed on the first side of the connector and located on the peripheral side of the first liquid through hole and the second liquid through hole, the other one of the first groove and the first protrusion is formed on the second side of the spray arm body and located on the peripheral side of the first runner and the second runner, and the first protrusion is inserted into the first groove and is in interference fit with the first groove;

the second side of the connector is located the first liquid port and the week side of second liquid port is provided with one of second recess and second arch, first liquid outlet with the week side of second liquid outlet is provided with the second recess and the other of second arch, the second arch inserts in the second recess and with second recess interference fit sets up.

Optionally, the week side of connector is provided with one of first draw-in groove and first buckle, the week side of mount pad is provided with first draw-in groove with another one of first buckle, first buckle with first draw-in groove joint, the week side of connector still is provided with one of second draw-in groove and second buckle, be provided with on the casing of dish washer the second draw-in groove with another one of second buckle, the second buckle with second draw-in groove joint.

Optionally, the top spray arm structure comprises a top spray arm and a first water pipe, the top spray arm is arranged at the upper end of the first water pipe, and the lower end of the first water pipe is connected with the upper end of the mounting seat and is communicated with the third liquid outlet;

the bottom spray arm structure comprises a bottom spray arm and a second water pipe, wherein the bottom spray arm is arranged at the lower end of the second water pipe, the upper end of the second water pipe is connected with the lower end of the mounting seat, a first liquid passage and a second liquid passage are arranged on the second water pipe, the first liquid passage is communicated with the third liquid inlet and the second liquid inlet, and the second liquid passage is communicated with the first liquid inlet.

Another aspect of the present utility model provides a dishwasher, including an inner container and a spray arm structure of the dishwasher.

Compared with the prior art, the utility model at least comprises the following beneficial effects:

according to the middle spray arm structure of the spray arm structure, the water distribution assembly is arranged to convey the washing liquid for the upper spray arm and the lower spray arm, so that the upper spray arm can spray the washing liquid upwards, the lower spray arm can spray the washing liquid downwards, a good washing effect is achieved on tableware, and washing efficiency is high. And the structure is simple, and the bottom spray arm structure can be used for conveying the washing liquid for the middle spray arm structure and the top spray arm structure.

Drawings

FIG. 1 is a perspective view of a spray arm structure of a dishwasher and an assembly of a liner of the dishwasher according to an embodiment of the present utility model;

FIG. 2 is a front view of a spray arm structure of a dishwasher and an assembly of a liner of the dishwasher according to an embodiment of the present utility model;

fig. 3 is a schematic front view of a middle spray arm structure of a dishwasher according to an embodiment of the present utility model;

fig. 4 is a schematic perspective view of a middle spray arm structure of a dishwasher according to an embodiment of the present utility model;

fig. 5 is a schematic perspective view of a spray arm water pipe of a spray arm structure of a dishwasher according to an embodiment of the present utility model;

fig. 6 is a schematic perspective view of a connection member of a spray arm structure of a dishwasher according to an embodiment of the present utility model;

FIG. 7 is a left side view of a connection member of a spray arm structure of a dishwasher according to an embodiment of the present utility model;

fig. 8 is a schematic perspective view of a spray arm seat of a spray arm structure of a dishwasher according to an embodiment of the present utility model;

fig. 9 is a right side view of a spray arm seat of a spray arm structure of a dishwasher according to an embodiment of the present utility model;

FIG. 10 is a top view of a spray arm mount of a spray arm structure of a dishwasher according to an embodiment of the present utility model;

FIG. 11 is a bottom view of a spray arm mount of a spray arm structure of a dishwasher according to an embodiment of the present utility model;

fig. 12 is a schematic perspective view of a second water pipe of a spray arm structure of a dishwasher according to an embodiment of the present utility model;

fig. 13 is a schematic perspective view of a first water pipe of a spray arm structure of a dishwasher according to an embodiment of the present utility model.

In the figure:

1. a top spray arm;

2. an inner container;

3. a first water pipe; 31. a first joint; 32. a liquid outlet;

4. a middle spray arm structure; 41. an upper spray arm; 42. a lower spray arm; 43. a spray arm water pipe; 430. a spray arm body; 431. a first flow passage; 432. a second flow passage; 433. a second connecting portion; 434. an upper interface; 435. a lower interface; 436. a first water blocking edge; 437. a second water blocking edge; 438. a water blocking groove; 439. a first protrusion; 44. a connecting piece; 440. a connecting body; 441. a first connection portion; 442. a first groove; 443. a first liquid port; 444. a second liquid port; 445. a second buckle; 446. a first clamping groove; 447. a second protrusion; 45. a spray arm seat; 450. a mounting base; 4501. a second groove; 451. a fourth joint; 452. a second liquid inlet; 453. a third liquid inlet; 454. a first liquid inlet; 455. a first buckle; 456. a second liquid outlet; 457. a first liquid outlet; 458. a third liquid outlet; 459. a second joint;

5. a second water pipe; 51. a third joint; 52. a first liquid passage 52; 53. a second liquid passage 53;

6. and a bottom spray arm.

Detailed Description

The following examples illustrate the utility model, but the utility model is not limited to these examples. Modifications and equivalents of some of the technical features of the specific embodiments of the present utility model may be made without departing from the spirit of the present utility model, and they are all included in the scope of the claimed utility model.

Referring to fig. 1-13, the present utility model provides a spray arm structure of a dishwasher, which includes a top spray arm structure, a bottom spray arm structure, and a middle spray arm structure 4. The top spray arm structure is arranged at the upper part of the inner container 2 of the dish washer and is used for spraying washing liquid downwards. The bottom spray arm structure is arranged at the lower part of the inner container 2 and is used for spraying the washing liquid upwards. The middle spray arm structure 4 is arranged in the middle of the liner 2, the middle spray arm structure 4 comprises a water diversion component, an upper spray arm 41 and a lower spray arm 42 which are connected with the water diversion component, the water diversion component is connected with the top spray arm structure and the bottom spray arm structure, the water diversion component is used for conveying washing liquid for the upper spray arm 41 and the lower spray arm 42, the upper spray arm 41 is used for spraying washing liquid upwards, and the lower spray arm 42 is used for spraying washing liquid downwards.

According to the middle spray arm structure 4 of the spray arm structure, the water distribution assembly is arranged to convey the washing liquid to the upper spray arm 41 and the lower spray arm 42, so that the upper spray arm 41 can spray the washing liquid upwards, the lower spray arm 42 can spray the washing liquid downwards, a good washing effect is achieved on tableware, and washing efficiency is high. And simple structure can utilize the bottom spray arm structure simultaneously to carry the washing liquid for well spray arm structure 4, top spray arm structure.

Optionally, the water distribution assembly includes a spray arm water tube 43 and a spray arm seat 45. The spray arm water pipe 43 comprises a spray arm body 430, a first flow channel 431 and a second flow channel 432 are formed in the spray arm body 430, an upper interface 434 connected with the upper spray arm 41 is formed in the upper portion of the first end of the spray arm body 430, the upper interface 434 is connected with the first end of the first flow channel 431, a lower interface 435 connected with the lower spray arm 42 is formed in the lower portion of the first end of the spray arm body 430, and the lower interface 435 is connected with the first end of the second flow channel 432. The spray arm seat 45 comprises a mounting seat 450, the mounting seat 450 is mounted at the second end of the spray arm body 430, a first liquid separating channel, a second liquid separating channel and a third liquid separating channel which are all connected with the bottom spray arm structure are formed on the mounting seat 450, the first liquid separating channel is connected with the second end of the first flow channel 431, the second liquid separating channel is connected with the second end of the second flow channel 432, and the third liquid separating channel is connected with the top spray arm structure. The spray arm water pipe 43 and the spray arm seat 45 are arranged, so that the water diversion component is connected with the top spray arm structure and the bottom spray arm structure.

Optionally, a first liquid inlet 454, a second liquid inlet 452 and a third liquid inlet 453 which are all connected with the bottom spray arm structure are formed at the bottom end of the mounting seat 450, a first liquid outlet 457 and a second liquid outlet 456 are formed at one side of the mounting seat 450, a third liquid outlet 458 is formed at the upper end of the mounting seat 450, the first liquid inlet 454 is connected with the first liquid outlet 457 to form a second sub-liquid flow channel, the second liquid inlet 452 is connected with the second liquid outlet 456 to form a first sub-liquid flow channel, the third liquid inlet 453 is connected with the third liquid outlet 458 to form a third sub-liquid flow channel, the first liquid outlet 457 is connected with the second end of the second flow channel 432, and the second liquid outlet 456 is connected with the second end of the first flow channel 431, so that connection between the spray arm water pipes 43 of the mounting seat 450 is realized, and washing liquid is smoothly conveyed to the upper spray arm 41 and the lower spray arm 42.

Optionally, the middle spray arm structure 4 further comprises a connecting piece 44, and the spray arm water pipe 43 is connected with the spray arm seat 45 through the connecting piece 44. By providing the connection member 44, the connection between the boom water pipe 43 and the boom seat 45 is facilitated.

Optionally, the connecting piece 44 includes a connecting body 440, the connecting body 440 is provided with a first liquid through hole 443 and a second liquid through hole 444, one end of the first liquid through hole 443 is connected with the second end of the first flow channel 431, the other end is connected with the first liquid separating channel, one end of the second liquid through hole 444 is connected with the second end of the second flow channel 432, and the other end is connected with the second liquid separating channel, so that the washing liquid can be smoothly conveyed to the upper spray arm 41 and the lower spray arm 42.

Alternatively, the first side of the connector 440 is provided with a first connection portion 441, the second end of the spray arm water pipe 43 is provided with a second connection portion 433, and the first connection portion 441 and the second connection portion 433 are connected by screws, thereby achieving connection between the connector 44 and the spray arm water pipe 43.

Optionally, one of the first groove 442 and the first protrusion 439 is disposed on the circumferential side of the first side of the connector 440 located at the first fluid port 443 and the second fluid port 444, the other one of the first groove 442 and the first protrusion 439 is disposed on the circumferential side of the second side of the spray arm body 430 located at the first fluid channel 431 and the second fluid channel 432, and the first protrusion 439 is inserted into the first groove 442 and is disposed in interference fit with the first groove 442, so as to achieve tight connection between the connector 44 and the spray arm water pipe 43, and prevent leakage of the washing liquid from the gap between the spray arm water pipe 43 and the connector 44. The second side of the connecting portion is provided with one of a second groove 4501 and a second protrusion 447 on the peripheral side of the first liquid outlet 443 and the second liquid outlet 444, the other of the second groove 4501 and the second protrusion 447 is provided on the peripheral side of the first liquid outlet 457 and the second liquid outlet 456, and the second protrusion 447 is inserted into the second groove 4501 and is disposed in interference fit with the second groove 4501, thereby realizing tight connection between the spray arm base 45 and the connecting member 44 and preventing leakage of the washing liquid from the gap between the spray arm base 45 and the connecting member 44.

Specifically, in the present embodiment, the first grooves 442 are disposed on the first side of the connecting body 440 and on the circumferential sides of the first fluid port 443 and the second fluid port 444, and the first protrusions 439 are disposed on the second side of the spray arm body 430 and on the circumferential sides of the first fluid channel 431 and the second fluid channel 432. The second protrusions 447 are provided on the second side of the connector 440 on the circumferential sides of the first and second liquid inlets 443, 444, and the second grooves 4501 are provided on the circumferential sides of the first and second liquid outlets 457, 456.

Optionally, one of the first clamping groove 446 and the first buckle 455 is disposed on the peripheral side of the connecting portion, the other of the first clamping groove 446 and the first buckle 455 is disposed on the peripheral side of the mounting base 450, and the first buckle 455 is clamped with the first clamping groove 446, so as to realize connection between the connecting member 44 and the spray arm base 45. The periphery side of connecting portion still is provided with one of second draw-in groove and second buckle 445, is provided with the other one of second draw-in groove and second buckle 445 on the casing of dish washer, second buckle 445 and second draw-in groove joint to realize the connection between well spray arm structure 4 and the casing, and then guarantee the installation stability of well spray arm in the dish washer.

Specifically, in the present embodiment, the connecting portion is provided with a first locking groove 446 on the peripheral side, and the mounting seat 450 is provided with a first buckle 455 on the peripheral side. The periphery of the connection part is also provided with a second buckle 445, and the machine shell of the dish-washing machine is provided with a second clamping groove.

Optionally, the side surface of the spray arm water pipe 43 is further provided with a first water blocking edge 436 and a second water blocking edge 437, a water blocking groove 438 is formed between the first water blocking edge 436 and the second water blocking edge 437 at intervals, and a partition plate in the liner 2 can be inserted into the water blocking groove 438, so that the liner 2 is separated, and the liner 2 is separated into an upper washing cavity and a lower washing cavity.

Optionally, the top spray arm structure includes a top spray arm 1 and a first water pipe 3, the top spray arm 1 is disposed at the upper end of the first water pipe 3, the lower end of the first water pipe 3 is connected with the upper end of the mounting seat 450 and is communicated with the third liquid outlet 458, and therefore the cleaning solution is guaranteed to be capable of being conveyed to the top spray arm 1. The bottom spray arm structure comprises a bottom spray arm 6 and a second water pipe 5, wherein the bottom spray arm 6 is arranged at the lower end of the second water pipe 5, the upper end of the second water pipe 5 is connected with the lower end of an installation seat 450, a first liquid passage 52 and a second liquid passage 53 are arranged on the second water pipe 5, the first liquid passage 52 is communicated with a third liquid inlet 453 and a second liquid inlet 452, namely, the first liquid passage 52 simultaneously conveys washing liquid for the top spray arm 1 and the upper spray arm 41, and the second liquid passage 53 is communicated with the first liquid inlet 454, namely, the second liquid passage 53 conveys washing liquid for the lower spray arm 42.

Optionally, a liquid outlet 32 is arranged at the upper end of the first water pipe 3, and the top spraying arm 1 is connected with the liquid outlet 32.

Optionally, the lower end of the first water pipe 3 is provided with a first joint 31, the upper end of the mounting seat 450 is provided with a second joint 459, and the first joint 31 is detachably connected with the second joint 459, so as to realize detachable connection between the spray arm seat 45 and the first water pipe 3.

Optionally, a third connector 51 is disposed at the upper end of the second water pipe 5, a fourth connector 451 is disposed at the lower end of the mounting seat 450, and the third connector 51 is detachably connected to the fourth connector 451, so as to realize detachable connection between the spray arm seat 45 and the second water pipe 5.

Another aspect of the present utility model provides a dishwasher, comprising a liner 2 and a spray arm structure of the dishwasher.

What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.

Claims (10)

1. A spray arm structure of a dishwasher, comprising:

the top spraying arm structure is arranged at the upper part of the inner container (2) of the dish washer and is used for spraying washing liquid downwards;

the bottom spray arm structure is arranged at the lower part of the inner container (2) and is used for spraying washing liquid upwards;

well spray arm structure (4), set up the middle part of inner bag (2) well spray arm structure (4) include water diversion subassembly and with last spray arm (41), lower spray arm (42) that water diversion subassembly is connected, water diversion subassembly with top spray arm structure bottom spray arm structure is connected, water diversion subassembly is used for go up spray arm (41) and lower spray arm (42) carry the washing liquid, go up spray arm (41) and be used for upwards spraying the washing liquid, lower spray arm (42) are used for down spraying the washing liquid.

2. The spray arm structure of a dishwasher of claim 1, wherein the water distribution assembly comprises:

the spray arm water pipe (43) comprises a spray arm body (430), a first flow channel (431) and a second flow channel (432) are formed in the spray arm body (430), an upper interface (434) connected with the upper spray arm (41) is formed in the upper portion of the first end of the spray arm body (430), the upper interface (434) is connected with the first end of the first flow channel (431), a lower interface (435) connected with the lower spray arm (42) is formed in the lower portion of the first end of the spray arm body (430), and the lower interface (435) is connected with the first end of the second flow channel (432);

spray arm seat (45), including mount pad (450), mount pad (450) are installed the second end of spray arm body (430), set up on mount pad (450) all with first branch liquid runner, second branch liquid runner and the third branch liquid runner of end spray arm structural connection, first branch liquid runner with the second end of first runner (431) is connected, second branch liquid runner with the second end of second runner (432) is connected, the third branch liquid runner with top spray arm structural connection.

3. The spray arm structure of a dishwasher according to claim 2, wherein a first liquid inlet (454), a second liquid inlet (452) and a third liquid inlet (453) which are all connected with the bottom spray arm structure are formed at the bottom end of the mounting seat (450), a first liquid outlet (457) and a second liquid outlet (456) are formed at one side of the mounting seat (450), a third liquid outlet (458) is formed at the upper end of the mounting seat (450), the first liquid inlet (454) is connected with the first liquid outlet (457) to form a second liquid split runner, the second liquid inlet (452) is connected with the second liquid outlet (456) to form a first liquid split runner, the third liquid inlet (453) is connected with the third liquid outlet (458) to form a third liquid split runner, the first liquid outlet (457) is connected with the second end of the second flow channel (432), and the second liquid outlet (456) is connected with the second end of the second flow channel (431).

4. A spray arm structure of a dishwasher according to claim 3, characterized in that the middle spray arm structure (4) further comprises a connection piece (44), the spray arm water pipe (43) and the spray arm seat (45) being connected by the connection piece (44).

5. The spray arm structure of a dishwasher according to claim 4, wherein the connecting piece (44) comprises a connecting body (440), a first liquid through hole (443) and a second liquid through hole (444) are formed in the connecting body (440), one end of the first liquid through hole (443) is connected with the second end of the first flow channel (431), the other end of the first liquid through hole is connected with the first liquid separating channel, one end of the second liquid through hole (444) is connected with the second end of the second flow channel (432), and the other end of the second liquid through hole is connected with the second liquid separating channel.

6. The spray arm structure of a dishwasher according to claim 5, wherein a first side of the connection body (440) is provided with a first connection portion (441), a second end of the spray arm water pipe (43) is provided with a second connection portion (433), and the first connection portion (441) and the second connection portion (433) are connected by screws.

7. The spray arm structure of a dishwasher according to claim 6, wherein a first side of the connection body (440) at a circumferential side of the first and second liquid through-holes (443, 444) is provided with one of a first groove (442) and a first protrusion (439), and a second side of the spray arm body (430) at a circumferential side of the first and second flow passages (431, 432) is provided with the other of the first groove (442) and the first protrusion (439), the first protrusion (439) being inserted into the first groove (442) and provided in interference fit with the first groove (442);

the second side of the connector (440) is located the week side of first liquid port (443) and second liquid port (444) is provided with one of second recess (4501) and second arch (447), the week side of first liquid outlet (457) and second liquid outlet (456) is provided with the other of second recess (4501) and second arch (447), second arch (447) inserts in second recess (4501) and with second recess (4501) interference fit sets up.

8. The spray arm structure of a dishwasher according to claim 7, wherein a first clamping groove (446) and one of first buckles (455) are provided on a peripheral side of the connection body (440), the other of the first clamping groove (446) and the first buckles (455) is provided on a peripheral side of the mounting base (450), the first buckles (455) are engaged with the first clamping groove (446), one of a second clamping groove and a second buckle (445) is further provided on a peripheral side of the connection body (440), the other of the second clamping groove and the second buckle (445) is provided on a casing of the dishwasher, and the second buckle (445) is engaged with the second clamping groove.

9. A spray arm structure of a dishwasher according to any one of claims 3 to 8,

the top spray arm structure comprises a top spray arm (1) and a first water pipe (3), wherein the top spray arm (1) is arranged at the upper end of the first water pipe (3), and the lower end of the first water pipe (3) is connected with the upper end of the mounting seat (450) and is communicated with the third liquid outlet (458);

the bottom spray arm structure comprises a bottom spray arm (6) and a second water pipe (5), wherein the bottom spray arm (6) is arranged at the lower end of the second water pipe (5), the upper end of the second water pipe (5) is connected with the lower end of the mounting seat (450), a first liquid passage (52) and a second liquid passage (53) are arranged on the second water pipe (5), the first liquid passage (52) is communicated with the third liquid inlet (453) and the second liquid inlet (452), and the second liquid passage (53) is communicated with the first liquid inlet (454).

10. A dishwasher, characterized by comprising a liner (2) and a spray arm structure of the dishwasher according to any one of claims 1-9.