CN220778302U

CN220778302U - Reinforced spray washing structure of dish washer, dish washer spray arm assembly and dish washer

Info

Publication number: CN220778302U
Application number: CN202321380033.4U
Authority: CN
Inventors: 梁春华; 黎铭峰; 潘叶江
Original assignee: Vatti Co Ltd
Current assignee: Vatti Co Ltd
Priority date: 2023-06-01
Filing date: 2023-06-01
Publication date: 2024-04-16
Anticipated expiration: 2033-06-01

Abstract

The utility model discloses a reinforced spray structure of a dish washer, a spray arm assembly of the dish washer and the dish washer. The dishwasher reinforcing spray washing structure comprises a connection pipeline, wherein a first water passing part and a second water passing part are arranged on the connection pipeline, and the first water passing part is connected with a water supply structure of the dishwasher; the spray arm comprises a spray arm body, a connecting part arranged on one side of the spray arm body, and a water diversion structure arranged between the spray arm body and the connecting part, wherein the connecting part is connected with the second water passing part, a first water channel and a second water channel are arranged in the spray arm body, a first spray hole communicated with the first water channel and a second spray hole communicated with the second water channel are further formed in the spray arm body, and the water diversion structure can rotate between one or two of the first water channel and the second water channel.

Description

Reinforced spray washing structure of dish washer, dish washer spray arm assembly and dish washer

Technical Field

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

Background

With the continuous improvement of the living standard of people, the household dish washing machine gradually enters a plurality of families to replace the tedious labor of manually washing the tableware. In the market, there are various dish washing machine products with front door, water tank, drawer, small desk, etc. and their water flow systems are the same, mainly by spraying high temperature and high pressure water flow through the inner rotary spray arm to directly or indirectly spray the dishes in the dish basket, and combining with the mechanical flushing of water flow dispersion, reflection, sputtering, etc. and assisted with chemical actions of wetting, decomposition, soaking puffing, etc. of the detergent and the dissolution of hot water and thermal shock action, the dishes are fully washed and cleaned.

The spray arm structure of the existing dish washer basically comprises a top spray arm, a middle spray arm and a lower spray arm, the top spray arm, the middle spray arm and the lower spray arm are mainly circular spray tracks, when the spray arm sprays and washes tableware, the whole loading area is uniformly sprayed and washed, and the uniform spray washing mode has a good cleaning effect on most of medium and slight pollution tableware, but when few serious pollution tableware or deep-mouth stubborn stains are encountered, the condition of unclean washing is easy to occur, so that the overall washing effect is reduced, and bad use experience is brought to users.

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 reinforced spray washing structure of a dish washer, which can carry out reinforced washing on heavy-stain tableware placed in a preset area according to the needs and has better user experience.

The above object is achieved by the following technical scheme:

a dishwasher enhancing spray structure comprising:

the connection pipeline is provided with a first water passing part and a second water passing part, and the first water passing part is connected with a water supply structure of the dish washer;

the spray arm comprises a spray arm body, a connecting part arranged on one side of the spray arm body, and a water diversion structure arranged between the spray arm body and the connecting part, wherein the connecting part is connected with the second water passing part, a first water channel and a second water channel are arranged in the spray arm body, a first spray hole communicated with the first water channel and a second spray hole communicated with the second water channel are further formed in the spray arm body, and the water diversion structure can rotate between one or two of the first water channel and the second water channel.

Optionally, the water dividing structure includes a rotating structure, the rotating structure includes:

the rotating part is arranged on the water spray arm body and can rotate relative to the water spray arm body;

the baffle plate is connected with the rotating part, extends into the water spray arm body and can rotate along with the rotating part, a through hole is formed in the baffle plate, and when the rotating part rotates to a first position, the baffle plate simultaneously seals water inlets of the first water channel and the second water channel; when the rotating part rotates to a second position, the through hole is aligned with the water inlet of the first water channel, and the first water channel is communicated; when the rotating part rotates to a third position, the through hole is aligned with the water inlet of the second water channel, and the second water channel is communicated.

Optionally, the first spray hole and the second spray hole are all set up in the same side of spray arm body, the spray arm body is dorsad first spray hole with the middle part of one side of second spray hole is provided with the pivot, the middle part of rotating the portion is provided with the shaft hole, the pivot passes the shaft hole, the one end of pivot passing the shaft hole is provided with and is used for limiting the spray arm body is followed the locating part of roll-off in the pivot.

Optionally, one side of the rotating part facing the spray arm body is further provided with one of a first guide protrusion and a first guide slot, the spray arm body is further provided with the other one of the first guide protrusion and the first guide slot, the first guide protrusion is inserted into the first guide slot, and when the rotating part rotates relative to the spray arm body, the first guide protrusion slides along the first guide slot.

Optionally, a positioning slot hole is further formed in one side of the spray arm body, which faces the rotating part, an elastic structure is arranged in the positioning slot hole, a first positioning slot hole, a second positioning slot hole and a third positioning slot hole which are arranged at intervals are further formed in one side of the rotating part, which faces the spray arm body, and when the rotating part rotates to the first position, the elastic structure falls into the first positioning slot hole; when the rotating part rotates to a second position, the elastic structure falls into the second positioning slot hole; when the rotating part rotates to the third position, the elastic structure falls into the third positioning slot hole.

Optionally, still be provided with the sealing washer in the spray arm body, the sealing washer sets up first water course and the water inlet of second water course with between the connecting portion, the sealing washer with first water course and the water inlet of second water course with the equal interference fit of connecting portion sets up, set up on the sealing washer with first water hole that corresponds of first water course and with the second water hole that corresponds of second water course, still set up the draw-in groove on the sealing washer, the draw-in groove runs through first water hole with the second water hole that crosses, the baffle stretches into in the draw-in groove, the baffle with sealing washer interference fit sets up and can be followed under the effect of external force the draw-in groove slides, in order to be shutoff between the shutoff first water hole with one or two of the second water hole three kinds of states.

Optionally, the second water-passing portion outside is provided with first buckle, second buckle and second direction arch, the outside of connecting portion is provided with first buckle groove, second buckle groove and second direction slotted hole, the second direction arch can be followed the second direction slotted hole slides, until first buckle inserts first buckle groove, the second buckle inserts in the second buckle groove.

Optionally, the spray arm and the second water passing portion are both provided with at least two, and the spray arm and the second water passing portion are arranged in one-to-one correspondence.

The utility model further provides a spray arm assembly of a dish washer, which comprises an upper spray arm structure, a middle spray arm structure, a lower spray arm structure, a water pipeline structure communicated with the upper spray arm structure, the middle spray arm structure and the lower spray arm structure, and the dish washer reinforcing spray mechanism, wherein a first water pipeline part of the connection pipeline is connected with a water outlet part of a water supply pipeline of the middle spray arm structure.

In yet another aspect, the present utility model provides a dishwasher, comprising a dishwasher spray arm assembly as described above.

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

the utility model provides a reinforced spray-washing structure of a dish washer, which comprises a connection pipeline and a spray arm. The connection pipeline is provided with a first water passing part and a second water passing part, and the first water passing part is connected with a water supply structure of the dish washer. The spray arm includes the spray arm body, set up the connecting portion in spray arm body one side and install the water diversion structure between spray arm body and connecting portion, connecting portion and this internal first water course and the second water course of being provided with of spray arm to, still set up the first orifice that communicates with first water course and the second orifice that communicates with the second water course on the spray arm body, water diversion structure can rotate between the three kinds of states of one or both in shutoff first water course and second water course. When only the first water channel is plugged, water is sprayed out of the second spray hole, when only the second water channel is plugged, water is sprayed out of the first spray hole, when both the first water channel and the second water channel are plugged, the enhanced spray mechanism is in a closed state, and both the first spray hole and the second spray hole cannot spray water, so that a user can conveniently control the spray mode, and the enhanced spray mechanism is further suitable for different washing requirements, and can control the dish washing effect of the enhanced spray mechanism on tableware placed in a specific area.

Drawings

FIG. 1 is a schematic view of a spray arm assembly of a dishwasher in accordance with an embodiment of the present utility model;

FIG. 2 is a schematic perspective view of a strengthening spray mechanism of a dishwasher according to an embodiment of the present utility model mounted on a middle spray arm structure;

fig. 3 is a schematic perspective view of a water supply pipe 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 reinforced spray mechanism of a dishwasher according to an embodiment of the present utility model;

FIG. 5 is an exploded view of a reinforced spray mechanism of a dishwasher in accordance with an embodiment of the present utility model;

FIG. 6 is an exploded view of a spray arm of a enhanced spray mechanism of a dishwasher in accordance with an embodiment of the present utility model;

FIG. 7 is a front view of a spray arm of a enhanced spray mechanism of a dishwasher in accordance with an embodiment of the present utility model;

FIG. 8 is a cross-sectional view taken at A-A of FIG. 7;

FIG. 9 is a top view of a spray arm of a reinforced spray mechanism of a dishwasher in accordance with an embodiment of the present utility model;

FIG. 10 is a cross-sectional view taken at B-B of FIG. 9;

FIG. 11 is a schematic perspective view of a water distribution structure of a reinforced spray mechanism of a dishwasher according to an embodiment of the present utility model;

FIG. 12 is a right side view of a spray arm of a dishwasher reinforcement spray mechanism (with both the first and second passageways blocked) according to an embodiment of the present utility model;

FIG. 13 is an exploded view of FIG. 12;

FIG. 14 is a right side view of a spray arm of a dishwasher reinforcement spray mechanism (second aisle blocked) according to an embodiment of the present utility model;

FIG. 15 is an exploded view of FIG. 14;

FIG. 16 is a right side view of a spray arm of a dishwasher reinforcement spray mechanism (first aisle blocked) according to an embodiment of the present utility model;

fig. 17 is an exploded view of fig. 16.

In the figure:

1. connecting the pipelines; 11. a first water passage; 111. a third clamping groove; 112. a third guide slot; 113. a fourth clamping groove; 12. a second water-passing portion; 121. a first buckle; 122. a second guide projection; 123. a second buckle;

2. a spray arm; 21. a spray arm body; 210. a slotted hole is arranged; 211. a first waterway; 212. a second waterway; 213. a first nozzle hole; 214. a second nozzle hole; 215. a first guide slot; 216. an avoidance groove; 217. a rotating shaft; 218. a limiting piece; 22. a connection part; 221. a first fastening groove; 222. a second guide slot; 223. a second fastening groove; 23. a water dividing structure; 231. a rotating structure; 2311. a partition plate; 2312. a rotating part; 2313. a via hole; 2314. a handle; 2315. a shaft hole; 2316. a first positioning slot; 2317. a second positioning slot; 2318. a third positioning slot; 2319. a first guide projection; 232. a seal ring; 2321. a first water passing hole; 2322. a second water passing hole; 2323. a clamping groove;

100. a lower spray arm structure; 200. a middle spray arm structure; 201. a water supply pipe; 202. three buckles; 203. a third guide projection; 204. a fourth buckle; 205. a second water outlet; 206. a first water outlet; 207. a water inlet part; 208. a middle spray arm; 300. strengthening a spray washing mechanism; 400. an upper spray arm structure; 500. a water pipe structure.

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. 1-11, the present utility model provides a reinforced spray structure of a dish washer, which comprises a connection pipeline 1 and a spray arm 2. The connection pipeline 1 is provided with a first water passing part 11 and a second water passing part 12, and the first water passing part 11 is connected with a water supply structure of the dish washer. The spray arm 2 comprises a spray arm body 21, a connecting part 22 arranged on one side of the spray arm body 21, and a water diversion structure 23 arranged between the spray arm body 21 and the connecting part 22, wherein the connecting part 22 is connected with the second water passing part 12, a first water channel 211 and a second water channel 212 are arranged in the spray arm body 21, a first spray hole 213 communicated with the first water channel 211 and a second spray hole 214 communicated with the second water channel 212 are also formed in the spray arm body 21, and the water diversion structure 23 can rotate between three states of blocking one or both of the first water channel 211 and the second water channel 212. When only the first water channel 211 is plugged, water is sprayed from the second spray hole 214, when only the second water channel 212 is plugged, water is sprayed from the first spray hole 213, when both the first water channel 211 and the second water channel 212 are plugged, the enhanced spray mechanism 300 is in a closed state, and neither the first spray hole 213 nor the second spray hole 214 can spray water, so that a user can conveniently control the spray mode, and the enhanced spray mechanism is further suitable for different washing requirements, so as to control the washing effect of the enhanced spray mechanism 300 on tableware placed in a specific area.

Alternatively, the water dividing structure 23 includes a rotation structure 231, and the rotation structure 231 includes a rotation portion 2312 and a partition 2311. The rotation portion 2312 is mounted on the spray arm body 21 and can rotate relative to the spray arm body 21. The partition 2311 is connected to the rotating portion 2312, extends into the spray arm body 21 and can rotate along with the rotating portion 2312, and a through hole 2313 is formed in the partition 2311, referring to fig. 12 and 13, when the rotating portion 2312 rotates to the first position, the partition 2311 simultaneously seals the water inlets of the first water channel 211 and the second water channel 212; referring to fig. 14 and 15, when the rotation portion 2312 rotates to the second position, the through hole 2313 is aligned with the water inlet of the first water channel 211, and the first water channel 211 is connected; referring to fig. 16 and 17, when the rotation portion 2312 is rotated to the third position, the through hole 2313 is aligned with the water inlet of the second water passage 212, and the second water passage 212 is connected.

Optionally, a handle 2314 is further provided on the outer side of the rotation portion 2312 to facilitate the user to rotate the rotation structure 231.

Optionally, a avoidance groove 216 is further formed in the spray arm body 21, so that the partition 2311 can rotate in the avoidance groove 216.

Optionally, the first spray hole 213 and the second spray hole 214 are both formed on the same side of the spray arm body 21, a rotation shaft 217 is disposed in a middle portion of one side of the spray arm body 21 opposite to the first spray hole 213 and the second spray hole 214, a shaft hole 2315 is disposed in a middle portion of the rotation portion 2312, and the rotation shaft 217 penetrates through the shaft hole 2315, so that the rotation portion 2312 rotates relative to the spray arm body 21. One end of the rotation shaft 217 passing through the shaft hole 2315 is provided with a stopper 218 for restricting the water spray arm body 21 from sliding out of the rotation shaft 217.

Optionally, one side of the rotating portion 2312 facing the spray arm body 21 is further provided with one of a first guiding protrusion 2319 and a first guiding slot 215, the spray arm body 21 is further provided with the other one of the first guiding protrusion 2319 and the first guiding slot 215, the first guiding protrusion 2319 is inserted into the first guiding slot 215, and when the rotating portion 2312 rotates relative to the spray arm body 21, the first guiding protrusion 2319 slides along the first guiding slot 215 to ensure the stability of the rotating portion 2312 during rotation.

Optionally, a positioning slot 210 is further formed on a side of the spray arm body 21 facing the rotating portion 2312, an elastic structure is disposed in the positioning slot 210, a first positioning slot 2316, a second positioning slot 2317 and a third positioning slot 2318 are further disposed on a side of the rotating portion 2312 facing the spray arm body 21 at intervals, and when the rotating portion 2312 rotates to the first position, the elastic structure falls into the first positioning slot 2316; when the rotating portion 2312 rotates to the second position, the elastic structure falls into the second positioning slot 2317; when the rotation portion 2312 rotates to the third position, the elastic structure falls into the third positioning slot 2318. By providing the elastic structure and the first, second and third positioning slots 2316, 2317 and 2318, the user can easily learn whether the rotating portion 2312 is rotated in place.

Optionally, a sealing ring 232 is further disposed in the spray arm body 21, the sealing ring 232 is disposed between the water inlets of the first water channel 211 and the second water channel 212 and the connecting portion 22, the sealing ring 232, the water inlets of the first water channel 211 and the second water channel 212 and the connecting portion 22 are both in interference fit, a first water passing hole 2321 corresponding to the first water channel 211 and a second water passing hole 2322 corresponding to the second water channel 212 are formed in the sealing ring 232, a clamping groove 2323 is further formed in the sealing ring 232, the clamping groove 2323 penetrates through the first water passing hole 2321 and the second water passing hole 2322, the partition 2311 stretches into the clamping groove 2323, and the partition 2311 and the sealing ring 232 are in interference fit and can slide along the clamping groove 2323 under the action of external force so as to rotate between three states of one or both of the first water passing hole 2321 and the second water passing hole 2322. By providing the seal 232, water is prevented from overflowing from between the partition 2311 and the shower arm body 21 and the connection part 22.

Optionally, the outer side of the second water draining part 12 is provided with a first buckle 121, a second buckle 123 and a second guiding protrusion 122, the outer side of the connecting part 22 is provided with a first buckle groove 221, a second buckle groove 223 and a second guiding groove hole 222, and the second guiding protrusion 122 can slide along the second guiding groove hole 222 until the first buckle 121 is inserted into the first buckle groove 221, and the second buckle 123 is inserted into the second buckle groove 223, at this time, the second water draining part 12 and the connecting part 22 are installed in place.

Optionally, at least two spray arms 2 and at least two second water-passing parts 12 are provided, and the spray arms 2 and the second water-passing parts 12 are arranged in a one-to-one correspondence. By providing at least two spray arms 2, the spray range of the enhanced spray mechanism 300 is made adjustable.

Another aspect of the present utility model provides a spray arm assembly of a dishwasher, comprising an upper spray arm structure 400, a middle spray arm structure 200, a lower spray arm structure 100, a water pipe structure 500 communicating with the upper spray arm structure 400, the middle spray arm structure 200 and the lower spray arm structure 100, and the dishwasher reinforcing spray mechanism 300, wherein the first water pipe 11 of the connection pipe 1 is connected with the water outlet of the water supply pipe 201 of the middle spray arm structure 200.

Optionally, the water inlet 207 of the water supply pipeline 201 is connected to the water pipeline structure 500, the water outlet of the water supply pipeline 201 includes a first water outlet 206 and a second water outlet 205, the first water inlet 11 of the connection pipeline 1 is connected to the second water outlet 205, the middle spray arm structure 200 further includes a middle spray arm 208, and the middle spray arm 208 is connected to the first water outlet 206.

Optionally, the water supply pipe 201 is further provided with a third buckle 202, a fourth buckle 204 and a third guide protrusion 203, which are located at the peripheral side of the second water outlet 205, the outer side of the first water passing portion 11 is provided with a third clamping groove 111, a fourth clamping groove 113 and a third guide slot 112, and the third guide protrusion 203 can slide along the third guide slot 112 until the third buckle 202 is inserted into the third clamping groove 111, and the fourth buckle 204 is inserted into the fourth clamping groove 113, at this time, the first water passing portion 11 and the water supply pipe 201 are installed in place.

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

1. A reinforced spray-washing structure of a dish washer, comprising:

the connection pipeline (1) is provided with a first water passing part (11) and a second water passing part (12), and the first water passing part (11) is connected with a water supply structure of the dish washer;

spray arm (2), including spray arm body (21), setting are in connecting portion (22) of spray arm body (21) one side and install spray arm body (21) with divide water structure (23) between connecting portion (22), connecting portion (22) with second portion of leading to water (12) are connected, be provided with first water course (211) and second water course (212) in spray arm body (21), and still set up on spray arm body (21) with first orifice (213) of first water course (211) intercommunication and with second orifice (214) of second water course (212) intercommunication, divide water structure (23) can rotate between one or two of shutoff first water course and second water course three kinds of states.

2. The dishwasher-strengthening spray structure according to claim 1, characterized in that the water dividing structure (23) comprises a rotating structure (231), the rotating structure (231) comprising:

a rotation part (2312) mounted on the boom body (21) and rotatable relative to the boom body (21);

the baffle (2311) is connected with the rotating part (2312) and extends into the water spray arm body (21) and can rotate along with the rotating part (2312), a through hole (2313) is formed in the baffle (2311), and when the rotating part (2312) rotates to a first position, the baffle (2311) simultaneously seals the water inlets of the first water channel (211) and the second water channel (212); when the rotating part (2312) rotates to a second position, the through hole (2313) is aligned with the water inlet of the first water channel (211), and the first water channel (211) is communicated; when the rotating part (2312) rotates to a third position, the through hole (2313) is aligned with the water inlet of the second water channel (212), and the second water channel (212) is communicated.

3. The dishwasher reinforcement spray structure according to claim 2, wherein the first spray hole (213) and the second spray hole (214) are formed on the same side of the spray arm body (21), a rotation shaft (217) is provided at a middle portion of one side of the spray arm body (21) facing away from the first spray hole (213) and the second spray hole (214), a shaft hole (2315) is provided at a middle portion of the rotation portion (2312), the rotation shaft (217) penetrates through the shaft hole (2315), and a limiting piece (218) for limiting the spray arm body (21) to slide out of the rotation shaft (217) is provided at one end of the rotation shaft (217) penetrating through the shaft hole (2315).

4. A dishwasher strengthening spray structure according to claim 3, characterized in that one side of the rotating part (2312) facing the spray arm body (21) is further provided with one of a first guide protrusion (2319) and a first guide slot (215), the spray arm body (21) is further provided with the other one of the first guide protrusion (2319) and the first guide slot (215), the first guide protrusion (2319) is inserted into the first guide slot (215), and when the rotating part (2312) rotates relative to the spray arm body (21), the first guide protrusion (2319) slides along the first guide slot (215).

5. The reinforced spray-washing structure of a dishwasher according to claim 3, wherein a placement slot (210) is further formed on one side of the spray arm body (21) facing the rotation part (2312), an elastic structure is disposed in the placement slot (210), a first positioning slot (2316), a second positioning slot (2317) and a third positioning slot (2318) are further disposed on one side of the rotation part (2312) facing the spray arm body (21) at intervals, and when the rotation part (2312) rotates to a first position, the elastic structure falls into the first positioning slot (2316); when the rotating part (2312) rotates to a second position, the elastic structure falls into the second positioning slot (2317); when the rotating part (2312) rotates to the third position, the elastic structure falls into the third positioning slot (2318).

6. The reinforced spray washing structure of a dishwasher according to any one of claims 2-5, wherein a sealing ring (232) is further arranged in the spray arm body (21), the sealing ring (232) is arranged between the water inlets of the first water channel (211) and the second water channel (212) and the connecting portion (22), the sealing ring (232) and the water inlets of the first water channel (211) and the second water channel (212) are in interference fit with the connecting portion (22), a first water passing hole (2321) corresponding to the first water channel (211) and a second water passing hole (2322) corresponding to the second water channel (212) are formed in the sealing ring (232), a clamping groove (2323) is formed in the sealing ring (232), the clamping groove (2323) penetrates through the first water passing hole (2321) and the second water passing hole (2322), the partition plate (2311) stretches into the clamping groove (2323), and the partition plate (2311) can be in interference fit with the first water passing hole (2321) and the second water passing hole (2322) under the action of a sliding state or the second water passing hole (2323) and the second water passing hole (2322).

7. The dishwasher reinforcing spray structure of any one of claims 1-5, wherein a first catch (121), a second catch (123) and a second guide projection (122) are provided on the outside of the second water passing portion (12), a first catch groove (221), a second catch groove (223) and a second guide groove hole (222) are provided on the outside of the connecting portion (22), and the second guide projection (122) can slide along the second guide groove hole (222) until the first catch (121) is inserted into the first catch groove (221), and the second catch (123) is inserted into the second catch groove (223).

8. The dishwasher strengthening spray structure according to claim 7, wherein at least two spray arms (2) and the second water passing portions (12) are provided, and the spray arms (2) and the second water passing portions (12) are arranged in one-to-one correspondence.

9. A spray arm assembly of a dishwasher, characterized by comprising an upper spray arm structure (400), a middle spray arm structure (200), a lower spray arm structure (100) and a water passage pipeline structure (500) communicated with the upper spray arm structure (400), the middle spray arm structure (200) and the lower spray arm structure (100), and further comprising a dishwasher strengthening spray mechanism as claimed in any one of claims 1-8, wherein a first water passage part (11) of the connection pipeline (1) is connected with a water outlet part of a water supply pipeline (201) of the middle spray arm structure (200).

10. A dishwasher comprising the dishwasher spray arm assembly of claim 9.