CN217565972U - Spray arm mechanism and cleaning equipment - Google Patents

Abstract

A cleaning device and a spray arm mechanism are provided, wherein the spray arm mechanism comprises a liquid distribution assembly, and the liquid distribution assembly comprises a shell and a liquid inlet cavity positioned in the shell; the first spray arm is connected with the shell and comprises a first liquid outlet part and a second liquid outlet part, the first liquid outlet part comprises a first liquid outlet cavity and at least one first spray hole, and the second liquid outlet part comprises a second liquid outlet cavity and at least one second spray hole; the second spray arm is connected with the shell and comprises a third liquid outlet part and a fourth liquid outlet part, the third liquid outlet part comprises at least one third liquid outlet cavity and at least one third lower spray hole, and the fourth liquid outlet part comprises at least one fourth liquid outlet cavity and at least one fourth upper spray hole; wherein, first spray arm and/or the second spray arm pass through divide the liquid portion with the feed liquor cavity is connected. Compared with the prior art, the utility model discloses a spray arm mechanism can realize spraying of multi-angle, has improved the cleaning efficiency.

Description

Spray arm mechanism and cleaning equipment

Technical Field

The utility model relates to a spray arm mechanism and cleaning device belongs to clean technical field.

Background

The spray arm mechanism is one of important components in the dish washing machine, and liquid is sprayed to tableware through liquid spraying holes in the spray arm mechanism, so that the tableware is cleaned. The quantity, position, size and the like of the liquid spraying holes on the spraying arm mechanism can greatly influence the cleaning effect of the tableware.

The spray arm mechanism commonly used in the related art usually comprises a straight liquid outlet part, but the design can generate dead angles which are difficult to clean due to the opening position of a liquid spraying hole and the like; in order to solve the problem, a liquid outlet part with a cross shape or multiple wings is adopted in the related art, but the design easily causes excessive liquid consumption.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a spray arm mechanism that cleaning efficiency is higher.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a spray arm mechanism comprising: the liquid separation assembly comprises a shell and a liquid inlet cavity positioned in the shell; the first spraying arm is connected with the shell and comprises a first liquid outlet part and a second liquid outlet part, the first liquid outlet part comprises a first liquid outlet cavity and at least one first spraying hole, and the second liquid outlet part comprises a second liquid outlet cavity and at least one second spraying hole;

the second spray arm is connected with the shell and comprises a third liquid outlet part and a fourth liquid outlet part, the third liquid outlet part comprises at least one third liquid outlet cavity and at least one third lower spray hole, and the fourth liquid outlet part comprises at least one fourth liquid outlet cavity and at least one fourth upper spray hole;

wherein, first spray arm and/or the second spray arm pass through divide the liquid portion with the feed liquor cavity is connected.

As a further improved technical solution of the present invention, the second spray arm further includes a third connection channel connected to the third liquid outlet portion and a first liquid distribution tube connected to the fourth liquid outlet portion, the third connection channel is connected to the housing, and the first liquid distribution tube is connected to the housing through a fifth connection channel.

As a further improved technical solution of the present invention, the first spray arm further includes a first connection channel connected to the first liquid outlet portion and a second connection channel connected to the second liquid outlet portion, wherein the first connection channel and the second connection channel are connected to the housing respectively.

As a further improved technical proposal of the utility model, the liquid separation part comprises a liquid separation valve plate and a driving element for driving the liquid separation valve plate to rotate, the liquid separation valve plate is provided with a first opening and a third opening,

the driving element drives the liquid separating valve plate to rotate until the first opening is communicated with the first connecting channel and the second connecting channel, and when the third opening is communicated with the fifth connecting channel, the liquid separating assembly is in a first state; and the driving element drives the liquid separating valve plate to rotate until the third opening is communicated with the third connecting channel, and the liquid separating assembly is in a third state.

As a further improved technical scheme of the utility model, a second opening is further arranged on the liquid separation valve plate, and the size of the first opening is larger than that of the second opening;

when the driving element drives the liquid separation valve plate to rotate to the second opening and the second connecting channel to be communicated, the liquid separation assembly is in a second state.

As a further improved technical scheme of the utility model, still be equipped with the fourth trompil on the branch liquid valve block, the drive element drive divide the liquid valve block rotatory extremely first trompil with first interface channel, second interface channel intercommunication, the third trompil with fifth interface channel intercommunication, the fourth trompil with during the third interface channel intercommunication, divide the liquid subassembly to be in the fourth state.

As a further improved technical solution of the present invention, a first cylinder portion is provided on the housing, and the first cylinder portion includes a first liquid inlet channel communicated with the first connecting channel;

the first spray arm comprises a first sleeve connected with the first liquid outlet part; the first connecting channel is arranged in the first sleeve, the first sleeve is connected with the first cylinder part in an inserting mode, the first connecting channel is communicated with the first liquid inlet channel, the driving element drives the liquid separating valve plate to rotate until the second opening is aligned with and communicated with the first liquid inlet channel, and the liquid separating assembly is in the second state.

As a further improved technical scheme of the utility model, the casing include the apron and certainly the second barrel portion that the apron upwards extended, first spray arm include with the second sleeve pipe that the second goes out liquid portion and links to each other, the second sleeve pipe is at least partially inserted in the second barrel portion, the second sleeve pipe with first sleeve pipe is coaxial, first sheathed tube pipe diameter is less than the sheathed tube pipe diameter of second, the second connect the passageway with the second goes out liquid portion intercommunication.

As a further improved technical scheme of the utility model, first barrel portion upwards extends the apron, be equipped with on the apron with the fluting of second interface channel intercommunication, divide the liquid subassembly include with the second inlet channel of fluting intercommunication, the second inlet channel with inlet cavity selectivity intercommunication, wherein, the drive element drive divide the liquid valve block rotatory extremely first trompil with when second inlet channel aims at and feeds through, divide the liquid subassembly to be in first state.

The utility model also provides a technical scheme, a cleaning device, including aforementioned spray arm mechanism.

Compared with the prior art, the utility model discloses cleaning equipment and spray arm mechanism can present the branch liquid subassembly of multiple intercommunication state through setting up, make spray arm mechanism can realize spraying of multi-angle according to the different spray arms of different demand drive, realizes the difference of different demands and sprays the requirement to cleaning efficiency has been improved.

Drawings

Fig. 1 is a perspective view of the spray arm mechanism of the present invention in one embodiment.

Fig. 2 is a perspective view of fig. 1 from another angle.

Fig. 3 is a partially exploded perspective view of fig. 1.

Fig. 4 is a partially exploded perspective view of the dispensing assembly of fig. 1.

Fig. 5 is a top view of the housing of fig. 4.

Fig. 6 is a top view of the dispensing valve flap of fig. 3 in a first position.

Fig. 7 is a schematic view of the first opening of the liquid separation valve sheet communicating with the first spray arm.

Fig. 8 is a schematic view when the second opening of the liquid separation valve sheet is communicated with the first spray arm.

Fig. 9 is a schematic sectional view of the spray arm mechanism of the present invention.

Fig. 10 is a partially enlarged view of a portion a of the frame in fig. 9, wherein the first opening of the separating valve sheet is communicated with the first nozzle arm.

Fig. 11 is a partially enlarged view of another position of fig. 10, wherein the second opening of the separating valve sheet is communicated with the first nozzle arm.

Fig. 12 is a schematic cross-sectional view of the spray arm mechanism of the present invention at another angle.

Fig. 13 is a partially enlarged view of a picture frame portion B in fig. 12.

Fig. 14 is a perspective view of the first spray arm.

Fig. 15 is an exploded perspective view of fig. 14.

Fig. 16 is a perspective view of the connection joint, the connection pipe, the second spray arm, and the third spray arm.

Fig. 17 is a partially enlarged view of a picture frame portion C in fig. 12.

Fig. 18 is a perspective view of a second spray arm, a liquid dispensing tube assembly, and a liquid dispenser in another embodiment.

Fig. 19 is a schematic sectional view taken along line D-D in fig. 18 when the second spray arm in fig. 18 is rotated to a certain position.

Fig. 20 is a plan view of the second spray arm.

Figure 21 is an exploded perspective view of the dispensing tube assembly and dispenser.

Fig. 22 is a perspective view of the dispenser of fig. 21.

Fig. 23 is an exploded perspective view of the position of the dispensing tube assembly relative to the dispenser when the second spray arm is at a certain height.

Fig. 24 is an exploded perspective view of the relative position of the dispensing tube assembly and the dispenser when the second spray arm is at another height.

Reference numerals: a liquid separation component-1; a housing-11; a lower shell-111; liquid inlet cavity-1110; liquid inlet-1111; a first barrel portion-1112; a first outer barrel portion-1113; a leak-hole 1114; a first fluid inlet channel-1115; a first connecting boss-1116; a second connecting convex column-1117; a passage-1118; an upper housing-112; a cover-1121; a second barrel portion-1122; a second outer barrel portion-1123; round hole-1124; -1125; a first perforation-1126; a second perforation-1127; a locking protrusion-1128; a second inlet passage-1129; a seal ring-113;

a bottom cover-12; a top wall-121; a recess-122; mounting holes-123;

a drive element-13; a motor-131; a shaft-132; a rotor-1311; a card slot-1321; top end portion-1322;

a liquid separating valve plate-14; an extension-140; a fixing hole-1401; a first opening-141; a second opening-142; a third opening-143;

a first spray arm-2; a first liquid outlet portion-21; a first nozzle hole-211; a first sleeve-22; a first connecting channel-221; a second liquid outlet portion-23; a second nozzle hole-231; a second sleeve-24; a second connecting channel-241;

rotating the latch arm-25;

a second spray arm-3; a fourth upper nozzle hole-31; a third lower nozzle-32;

a third spray arm-4; a fifth lower nozzle hole-41;

a connecting joint-5; a first connection end-51; a second connecting end-52;

a fifth connecting channel-61; a third connecting channel-62; a first connector-611; a second connector-621;

a liquid distribution pipe-7; a first liquid distribution pipe-71; a second liquid distribution tube-72; a first flow path-711; a second flow channel-712;

a liquid distribution pipe assembly-8; a first insertion hole-81; a first upper receptacle-811; a first middle jack-812; a first lower receptacle-813; a second receptacle-82; a second upper socket-821; a second middle jack-822; a second lower socket-823; a guide groove-83;

a first diagonal-D1; a second diagonal-D2;

a liquid preparation device-9; a first plug-in connector-91; a second plug-in connector-92; a first upper plug-93; a first lower plug-94; a second upper plug-95; a second lower plug-96; a guide post-97.

Detailed Description

Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. If several embodiments exist, the features of these embodiments may be combined with each other without conflict. When the description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The description set forth below in the exemplary detailed description does not represent all embodiments consistent with the present invention; rather, they are merely examples of apparatus, products and/or methods consistent with certain aspects of the invention, as set forth in the claims.

The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in the specification and claims of this application, the singular form of "a", "an", or "the" is intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the terms "first," "second," and the like as used in the description and in the claims of the present invention do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, the terms "front," "back," "up," "down," and the like in the description of the invention are used for convenience of description and are not limited to a particular position or spatial orientation. The word "comprise" or "comprises", and the like, is an open-ended expression meaning that an element that precedes "includes" or "comprising" includes "that the element that follows" includes "or" comprises "and its equivalents, that do not preclude the element that precedes" includes "or" comprising "from also including other elements. If the utility model discloses in appear "a plurality of", its meaning indicates two and more than two.

Referring to fig. 1 to 16, an embodiment of the present invention discloses a spray arm mechanism which can be used in a dishwasher to wash dishes by spraying liquid. The spray arm mechanism comprises a liquid distribution component 1, a first spray arm 2, a second spray arm 3 and a third spray arm 4 which are positioned at the bottom. The third spray arm 4 is provided with a plurality of fifth lower spray holes 41. The utility model discloses an in an embodiment, first spray arm 2, second spray arm 3 and third spray arm 4 homoenergetic are produced rotatoryly under the drive of liquid to easily realize the spraying at multi-angle, no dead angle.

Referring to fig. 4 and 10, the liquid separating assembly 1 includes a housing 11, a bottom cover 12 installed in the housing 11, a driving element 13 matched with the bottom cover 12, a liquid separating valve sheet 14 matched with the driving element 13, and the like.

In the illustrated embodiment of the present invention, the housing 11 is a split structure, and includes a lower housing 111, an upper housing 112, and a sealing ring 113 sealed between the upper housing 112 and the lower housing 111.

The lower shell 111 is provided with a liquid inlet cavity 1110 and a liquid inlet 1111 communicated with the liquid inlet cavity 1110. The bottom cover 12 is fixed to the bottom of the lower case 111, and seals the liquid inlet chamber 1110 from the bottom. In the illustrated embodiment of the present invention, the bottom cover 12 is provided with a top wall 121, and the top wall 121 is located at the bottom of the liquid inlet cavity 1110. The top wall 121 is a non-horizontal structure that includes a downwardly concave depression 122. One side of the recess 122 is higher than the other side of the recess 122 to facilitate adjustment of the flow. The bottom cover 12 is further provided with a mounting hole 123 penetrating up and down, and the mounting hole 123 is used for being matched with the driving element 13.

In the illustrated embodiment of the present invention, the driving element 13 is a motor 131 and a rotating shaft 132 coupled to the motor 131. Specifically, the motor 131 is provided with a rotor 1311. The bottom of the rotating shaft 132 is provided with a slot 1321 fixed with the rotor 1311. The shaft 132 is mounted to the mounting hole 123, and the shaft 132 includes a top portion 1322 that extends through the mounting hole. Top 1322 protrudes upward from top wall 121 of bottom cover 12 for fixing with separating valve sheet 14.

In addition, the lower housing 111 further includes a first cylinder portion 1112 extending upward, a first outer cylinder portion 1113 surrounding the outer circumference of the first cylinder portion 1112 and having a height lower than that of the first cylinder portion 1112, and a plurality of orifices 1114 located between the first cylinder portion 1112 and the first outer cylinder portion 1113. In an embodiment of the present invention, the first cylinder portion 1112 and the first outer cylinder portion 1113 are both cylindrical and coaxially disposed. The first barrel portion 1112 has a first inlet passage 1115 extending upwardly therethrough. The first liquid inlet channel 1115 is selectively communicated with the liquid inlet cavity 1110, that is, when the liquid separating valve plate 14 is located at a certain position, the first liquid inlet channel 1115 is communicated with the liquid inlet cavity 1110; when the liquid separating valve plate 14 is located at another position, the first liquid inlet channel 1115 is not communicated with the liquid inlet cavity 1110. The lower housing 111 further includes a first connecting protrusion 1116 and a second connecting protrusion 1117 beside the first outer cylinder 1113, and the first connecting protrusion 1116 and the second connecting protrusion 1117 both include a passage 1118 penetrating up and down. According to the position of the liquid separation valve plate 14, the channel 1118 is selectively communicated with the liquid inlet cavity 1110; that is, when the separating valve sheet 14 is located at a certain position, the channel 1118 of the first connecting boss 1116 and/or the channel 1118 of the second connecting boss 1117 can be communicated with the liquid inlet cavity 1110 through the corresponding opening on the separating valve sheet 14, so that the liquid can flow into the channel 1118 of the first connecting boss 1116 and/or the channel 1118 of the second connecting boss 1117; when the separating valve sheet 14 is located at another position, the channel 1118 of the first connecting protrusion 1116 and/or the channel 1118 of the second connecting protrusion 1117 are blocked by the solid portion of the separating valve sheet 14 and cannot communicate with the liquid inlet cavity 1110, and at this time, the liquid cannot flow into the channel 1118 of the first connecting protrusion 1116 and/or the channel 1118 of the second connecting protrusion 1117.

Referring to fig. 4 and 6, the separating valve sheet 14 is substantially circular. Separator valve sheet 14 includes an extension 140 that protrudes downward at the center thereof. The extension 140 has a fixing hole 1401 for receiving and fixing the top 1322 of the shaft 132. So set up, when drive element 13 rotates, rotor 1311 can drive pivot 132 rotatory, and then drive the rotation of separating valve piece 14.

Referring to fig. 6, the separating valve plate 14 further includes a first opening 141, a second opening 142, and a third opening 143, wherein the size of the first opening 141 is larger than that of the second opening 142. In the illustrated embodiment of the present invention, the first opening 141, the second opening 142 and the third opening 143 are all circular holes. In this other embodiment, liquid separating valve plate 14 is also provided with fourth trompil, fifth trompil etc. can be according to a plurality of settings of specific demand.

Referring to fig. 4 and 10, the upper housing 112 includes a cover plate 1121, a second cylindrical portion 1122 extending upward from the cover plate 1121, and a second outer cylindrical portion 1123 extending downward from the cover plate 1121. In one embodiment of the present invention, the second cylinder portion 1122 and the second outer cylinder portion 1123 are both cylindrical and are disposed coaxially. The first outer cylinder 1113 is inserted at least partially into the second outer cylinder 1123 and sealed at the point of connection to prevent fluid from escaping through the gap. The second body portion 1122 is provided with outwardly projecting latch projections 1128. In the illustrated embodiment of the present invention, the locking protrusions 1128 are a complete circle of protrusions.

The cover plate 1121 is provided with a circular hole 1124, and the first barrel 1112 penetrates through the cover plate 1121 from the circular hole 1124. The cover plate 1121 is provided with a slot 1125 located outside the circular hole 1124, the slot 1125 communicates the inner cavity of the second outer cylinder portion 1123 and the inner cavity of the second cylinder portion 1122 to form a second liquid inlet channel 1129. The second liquid inlet channel 1129 is selectively communicated with the liquid inlet cavity 1110, that is, when the liquid separating valve sheet 14 is located at a certain position, the second liquid inlet channel 1129 is communicated with the liquid inlet cavity 1110; when the liquid separating valve plate 14 is located at another position, the second liquid inlet channel 1129 is not communicated with the liquid inlet cavity 1110. In addition, the cover plate 1121 is further provided with a first through hole 1126 matching with the first connecting convex pillar 1116 and a second through hole 1127 matching with the second connecting convex pillar 1117. The first connecting protrusion 1116 and the second connecting protrusion 1117 extend upward beyond the cover plate 1121.

Referring to fig. 14 and 15, in the illustrated embodiment of the present invention, the first spray arm 2 includes a first liquid outlet portion 21, a first sleeve 22 connected to the first liquid outlet portion 21, a second liquid outlet portion 23, a second sleeve 24 connected to the second liquid outlet portion 23, and a rotary latch arm 25 connected to the second liquid outlet portion 23. In the present embodiment, the first liquid discharge portion 21 is a first arm ejection portion located above, and the second liquid discharge portion 23 is a second arm ejection portion located below. In the illustrated embodiment of the present invention, the first sleeve 22 extends downward from the first liquid outlet 21, and the second sleeve 24 extends downward from the second liquid outlet 23. The rotary latch arms 25 are two and extend downward from the second liquid outlet portion 23. The first sleeve 22 is cylindrical and the second sleeve 24 is conical.

The first liquid outlet part 21 and the second liquid outlet part 23 are fixedly connected and are in a cross shape, so that the cleaning range is expanded. The first liquid outlet 21 and the second liquid outlet 23 may be fixedly connected by welding or other means. In the illustrated embodiment of the present invention, the second liquid outlet portion 23 is located below the first liquid outlet portion 21, that is, when the first liquid outlet portion 21 and the second liquid outlet portion 23 are installed, the second liquid outlet portion 23 is located at the bottom of the first liquid outlet portion 21. The first liquid outlet portion 21 is provided with a first nozzle 211, and the second liquid outlet portion 23 is provided with a second nozzle 231. The first liquid outlet portion 21 and the second liquid outlet portion 23 have independent liquid flow passages, so as to facilitate independent control.

Specifically, referring to fig. 4 and 10, the first sleeve 22 extends downward a length that exceeds the second sleeve 24, i.e., the first sleeve 22 extends downward to protrude from the second sleeve 24. The first sleeve 22 is provided with a first connection passage 221 communicating with the first nozzle hole 211. The first sleeve 22 is inserted into the first barrel 1112, and the first connection passage 221 is communicated with the first liquid inlet passage 1115. In the illustrated embodiment of the present disclosure, the first sleeve 22 is at least partially inserted into the first barrel portion 1112. The connection of the first sleeve 22 to the first barrel portion 1112 is sealed, such as by a gasket, to prevent liquid leakage.

The second sleeve 24 is at least partially inserted into the second body portion 1122. In the illustrated embodiment of the present invention, the second sleeve 24 is coaxial with the first sleeve 22, and the diameter of the first sleeve 22 is smaller than the diameter of the second sleeve 24. The spray arm mechanism includes a second connection channel 241 between the second sleeve 24 and the first sleeve 22, the second connection channel 241 is communicated with the second spray hole 231, and the second connection channel 241 is communicated with the slot 1125.

The rotating latch arm 25 is located outside the second sleeve 24 and latches with the latch protrusion 1128 to prevent the rotating latch arm 25 from disengaging the second body portion 1122 upward. In the illustrated embodiment of the present invention, the locking protrusion 1128 is set to be a complete circle, which is advantageous for improving the stability of the rotating locking arm 25 during rotation. Technical field's technical field can understand, the utility model provides a first play liquid portion 21 and second play liquid portion 23 can realize the linkage under the drive of liquid to make first spray arm 2 produce rotatoryly, easily realize the spraying at multi-angle, no dead angle. The first spray arm 2 can spray liquid upward through the first spray hole 211 and/or the second spray hole 231 while rotating to wash dishes.

In the illustrated embodiment of the present invention, the size of the first opening 141 of the separating valve plate 14 is slightly larger than the pipe diameter of the bottom of the second sleeve 24, so as to ensure the liquid passing area. When the separating valve sheet 14 is located at another position, the size of the second opening 142 is slightly smaller than the pipe diameter of the bottom of the first sleeve 22, so as to prevent liquid channeling.

The separating valve sheet 14 rotates under the action of the driving element 13. Specifically, as shown in fig. 4 to fig. 7 and fig. 10, when the first opening 141 of the separating valve plate 14 is communicated with the first spray arm 2, that is, when the first opening 141 rotates to be vertically aligned with the second sleeve 24, the liquid inlet cavity 1110 is communicated with both the first liquid inlet channel 1115 and the second liquid inlet channel 1129 through the first opening 141. At this time, the first sleeve 22 and the second sleeve 24 discharge liquid simultaneously, so that the first liquid discharge part 21 and the second liquid discharge part 23 discharge liquid simultaneously, the liquid discharge efficiency is increased, and the cleaning time is shortened.

Referring to fig. 5, fig. 6, fig. 8 and fig. 11, when the second opening 142 of the separating valve plate 14 is communicated with the first spray arm 2, that is, when the second opening 142 rotates to be vertically aligned with the first sleeve 22, the liquid inlet cavity 1110 is communicated with the first liquid inlet channel 1115 through the second opening 142; and the second liquid inlet channel 1129 is not communicated with the liquid inlet cavity 1110 under the shielding of the liquid separating valve plate 14. At this time, only the first sleeve 22 of the first sleeve 22 and the second sleeve 24 discharges liquid, that is, only the first liquid discharge portion 21 of the first liquid discharge portion 21 and the second liquid discharge portion 23 discharges liquid, which is beneficial to saving liquid.

Referring to fig. 1, 3, 4, 12 and 13, the spray arm mechanism further includes a connection joint 5, and a fifth connection channel 61 and a third connection channel 62 communicated with the connection joint 5. The connection joint 5 comprises a first connection end 51 and a second connection end 52 connected with the first connection stud 1116 and the second connection stud 1117, respectively. The fifth connecting channel 61 and the third connecting channel 62 are arranged side by side. In the embodiment of the present invention, the flow cross-section of the third connecting channel 62 is larger than the flow cross-section of the fifth connecting channel 61, so as to facilitate flow division.

The second spray arm 3 includes a third liquid outlet portion, a third lower spray hole 32 disposed on the third liquid outlet portion, a fourth liquid outlet portion, and a fourth upper spray hole 31 disposed on the fourth liquid outlet portion. The third liquid outlet part is provided with a third liquid outlet cavity, and the third lower spray hole 32 is communicated with the third liquid outlet cavity. The fourth liquid outlet part is provided with a fourth liquid outlet cavity, and the fourth upper spray hole 31 is communicated with the fourth liquid outlet cavity. Specifically, the fifth connecting channel 61 communicates with the third lower nozzle hole 32, one path of the third connecting channel 62 communicates with the fourth upper nozzle hole 31, and the other path communicates with the third nozzle arm 4. Fifth connecting channel 61 and/or third connecting channel 62 are selectively communicated with liquid inlet cavity 1110 through liquid separating valve plate 14. Referring to fig. 13, in an embodiment of the present invention, when the separating valve plate 14 rotates to the position shown in the figure, the third opening 143 is aligned with the channel 1118 of the second connecting protrusion 1117, and at this time, the liquid inlet cavity 1110 flows into the third connecting channel 62 through the third opening 143, so that the fourth upper nozzle hole 31 of the second spray arm 3 can spray liquid, and the fifth lower nozzle hole 41 of the third spray arm 4 can also spray liquid. Of course, in other embodiments, when the separating valve plate 14 rotates to a certain position, the third opening 143 is aligned with the channel 1118 of the first connecting protrusion 1116, and at this time, the inlet cavity 1110 flows into the fifth connecting channel 61 through the third opening 143, so that the fourth upper nozzle 31 of the second nozzle arm 3 can spray liquid. When the separating valve plate 14 rotates to a certain position, the third opening 143 is communicated with both the channel 1118 of the first connecting stud 1116 and the channel 1118 of the second connecting stud 1117, the fourth upper nozzle 31 and the third lower nozzle 32 of the second spray arm 3 can spray liquid at the same time, and the fifth lower nozzle 41 of the third spray arm 4 can spray liquid.

In summary, the driving element 13 drives the separating valve plate 14 to rotate until the first opening 141 is communicated with the first connecting channel 221 and the second connecting channel 241, and when the third opening 143 is communicated with the fifth connecting channel 61, the separating assembly 1 is in the first state; the driving element 13 drives the separating valve plate 14 to rotate until the second opening 142 is communicated with the second connecting channel 241, and the separating assembly 1 is in the second state. The driving element 13 drives the separating valve plate 14 to rotate until the third opening 143 is communicated with the third connecting channel 62, and the separating assembly 1 is in the third state. The driving element 13 drives the separating valve plate 14 to rotate until the first opening 141 is communicated with the first connecting channel 221 and the second connecting channel 241, the third opening 143 is communicated with the fifth connecting channel 61, and when the fourth opening is communicated with the third connecting channel 62, the separating assembly 1 is in a fourth state.

As can be understood by those skilled in the art, the first liquid outlet portion 21 of the first spray arm 2, the second liquid outlet portion 23 of the first spray arm 2, the fourth upper nozzle hole 31 of the second spray arm 3, the third lower nozzle hole 32 of the second spray arm 3, and the fifth lower nozzle hole 41 of the third spray arm 4 in the present invention can be freely combined to realize selective spraying. The spray arm mechanism of the utility model can effectively solve the problem of cleaning dead angles, and does not increase liquid consumption; in addition, the cleaning time of the whole machine can be shortened, and the cleaning efficiency of the dish washing machine is improved.

Referring to fig. 17, in an embodiment of the present invention, the spray arm mechanism further includes a liquid distribution pipe 7 connected to the second spray arm 3. The liquid distribution pipe 7 includes a first flow passage 711 communicating with the fourth upper nozzle hole 31 and a second flow passage 712 communicating with the third lower nozzle hole 32. In the embodiment shown in fig. 17, there is one liquid distribution tube 7, and the first flow path 711 and the second flow path 712 are two independent internal flow paths of the liquid distribution tube 7. The first flow passage 711 communicates with the fifth connecting passage 61, and the second flow passage 712 communicates with the third connecting passage 62. Specifically, in one embodiment of the present invention, the spray arm mechanism further includes a liquid distribution pipe assembly 8 connected to the liquid distribution pipe 7, and the liquid distribution pipe assembly 8 includes a first insertion hole 81 communicating with the first flow passage 711 and a second insertion hole 82 communicating with the second flow passage 712. The fifth connecting passage 61 is provided with a first tab 611 inserted into the first insertion hole 81, and the third connecting passage 62 is provided with a second tab 621 inserted into the second insertion hole 82.

Referring to fig. 18 to 24, in another embodiment of the present invention, the liquid distribution pipe 7 includes a first liquid distribution pipe 71 and a second liquid distribution pipe 72 connected to the second spray arm 3. The first dispensing tube 71 and the second dispensing tube 72 are arranged side by side. The first liquid distribution pipe 71 includes a first flow passage 711 communicating with the third lower nozzle 32, and the second liquid distribution pipe 72 includes a second flow passage 712 communicating with the fourth upper nozzle 31. The first flow channel 711 and the second flow channel 712 are two relatively independent flow channels. The first flow passage 711 communicates with the fifth connecting passage 61, and the second flow passage 712 communicates with the third connecting passage 62. As shown in fig. 19, the first liquid distribution pipe 71 and the second liquid distribution pipe 72 are eccentrically disposed. As shown in fig. 20, the second spray arm 3 includes a first through hole 33 selectively communicating with the fourth upper nozzle hole 31 and a second through hole 34 selectively communicating with the third lower nozzle hole 32. The first through-hole 33 is located inside the second through-hole 34. Specifically, the first perforation 33 is disposed along a first diagonal line D1, and the second perforation 34 is disposed along a second diagonal line D2 intersecting the first diagonal line D1, so as to prevent eccentricity when the second spray arm 3 rotates. The first flow passage 711 is selectively communicated with the fourth upper nozzle hole 31 of the second nozzle arm 3 through the first through hole 33, and the second flow passage 712 is selectively communicated with the lower nozzle hole 32 of the second nozzle arm 3 through the second through hole 34.

Specifically, in one embodiment of the present invention, the spray arm mechanism further comprises a liquid dispensing tube assembly 8 connected to the first liquid dispensing tube 71 and the second liquid dispensing tube 72. The spray arm mechanism further comprises a liquid dispenser 9 connected to the fifth connection channel 61 and the third connection channel 62. The fluid distribution pipe assembly 8 includes a plurality of first insertion holes 81 communicating with the first flow passages 711 and a plurality of second insertion holes 82 communicating with the second flow passages 712. In the illustrated embodiment of the present invention, the plurality of first insertion holes 81 and the plurality of second insertion holes 82 are arranged in a matrix shape as a whole. Specifically, the number of first insertion holes 81 includes a first upper insertion hole 811, a first middle insertion hole 812, and a first lower insertion hole 813; the number of second jacks 82 includes a second upper jack 821, a second middle jack 822, and a second lower jack 823. The first jack 81 and the second jack 82 aligned in the left-right direction are grouped, that is, the first upper jack 811 and the second upper jack 821 are grouped, the first middle jack 812 and the second middle jack 822 are grouped, and the first lower jack 813 and the second lower jack 823 are grouped.

The dispenser 9 includes a first connector 91 inserted into the corresponding first receptacle 81 and a second connector 92 inserted into the corresponding second receptacle 82. In addition, the liquid dispenser 9 further includes a first upper plug 93 located above the first plug 91, a first lower plug 94 located below the first plug 91, a second upper plug 95 located above the second plug 92, and a second lower plug 96 located below the second plug 92. In the illustrated embodiment of the present invention, the first upper plug 93 and the second upper plug 95 are aligned left and right and form a group; the first plug connector 91 and the second plug connector 92 are aligned left and right and form a group; the first lower plugs 94 and the second lower plugs 96 are aligned side-to-side and form a group. The first upper plug 93, the second upper plug 95, the first plug 91, the second plug 92, the first lower plug 94, and the second lower plug 96 all protrude toward the liquid distribution tube assembly 8, and are arranged in a matrix shape as a whole. The liquid dispenser 9 is detachably connected to the liquid dispensing tube assembly 8. In the illustrated embodiment of the present invention, the first plug 91 and the second plug 92 are both sleeved with a seal ring to improve the sealing performance after assembly and prevent liquid leakage.

In the embodiment of the present invention, the position of the liquid distribution pipe assembly 8 can be adjusted up and down, thereby driving the basket of the dish washer to be adjusted up and down.

Referring to fig. 23, when the liquid distribution tube assembly 8 is at a certain height (the bowl basket is at a normal height), the first plug 91 and the second plug 92 are respectively inserted into the first upper insertion hole 811 and the second upper insertion hole 821, the first lower plug 94 and the second lower plug 96 are respectively inserted into the first middle insertion hole 812 and the second middle insertion hole 822, and the first upper plug 93 and the second upper plug 95 are empty (i.e. not inserted into the liquid distribution tube assembly 8). At this time, first upper jack 811 and second upper jack 821 are conductive, first middle jack 812 and second middle jack 822 are nonconductive, and first lower jack 813 and second lower jack 823 are nonconductive. The first lower plug 94 and the second lower plug 96 are respectively inserted into the first middle insertion hole 812 and the second middle insertion hole 822, so that the butt joint stability of the liquid distributor 9 and the liquid distributor assembly 8 is improved, and a certain positioning function can be achieved.

Referring to fig. 24, when the liquid distribution pipe assembly 8 is located at another height position (the bowl basket is located at a raised height position), the first plug 91 and the second plug 92 are respectively inserted into the first middle insertion hole 812 and the second middle insertion hole 822, the first upper plug 93 and the second upper plug 95 are respectively inserted into the first upper insertion hole 811 and the second upper insertion hole 821, and the first lower plug 94 and the second lower plug 96 are respectively inserted into the first lower insertion hole 813 and the second lower insertion hole 823. At this time, the first middle jack 812 and the second middle jack 822 are conductive, the first upper jack 811 and the second upper jack 821 are nonconductive, and the first lower jack 813 and the second lower jack 823 are nonconductive. The first upper plug 93 and the second upper plug 95 are respectively inserted into the first upper insertion hole 811 and the second upper insertion hole 821, and the first lower plug 94 and the second lower plug 96 are respectively inserted into the first lower insertion hole 813 and the second lower insertion hole 823, so that the butt joint stability of the liquid distributor 9 and the liquid distribution pipe assembly 8 is improved, and a certain positioning effect can be achieved.

In addition, in order to further improve the convenience of the butt joint of the liquid dispenser 9 and the liquid dispensing tube assembly 8, the liquid dispenser 9 and the liquid dispensing tube assembly 8 are further provided with a guide post 97 and a guide groove 83 which are matched with each other. In the illustrated embodiment of the present invention, the guide post 97 is disposed on the liquid distributor 9, and the guide groove 83 is disposed on the liquid distributor assembly 8. Of course, in other embodiments, the guide post 97 may be provided on the liquid dispensing tube assembly 8 and the guide groove 83 may be provided on the liquid dispensing unit 9, so that the guide function can be achieved when the two are combined. The design of guide post 97 and guide way 83 can be adjusted according to actual need in a flexible way, the utility model discloses no longer describe to this.

In order to facilitate understanding of the technical solution of the present invention, the first spray arm 2, the second spray arm 3, and the third spray arm 4 are also called as a lower spray arm, a middle spray arm, an upper spray arm, a spray arm, or a rotary spray arm.

The above embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, and the understanding of the present invention should be based on the technical personnel in the technical field, although the present specification has been described in detail with reference to the above embodiments, however, the skilled in the art should understand that the technical personnel in the technical field can still modify the present invention or substitute the same, and all technical solutions and modifications thereof that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims (10)

1. A spray arm mechanism, comprising:

the liquid separation assembly (1) comprises a shell (11) and a liquid inlet cavity (1110) positioned in the shell (11);

the first spray arm (2) is connected with the shell (11) and comprises a first liquid outlet part (21) and a second liquid outlet part (23), the first liquid outlet part (21) comprises a first liquid outlet cavity and at least one first spray hole (211), and the second liquid outlet part (23) comprises a second liquid outlet cavity and at least one second spray hole (231);

the second spray arm (3) is connected with the shell (11) and comprises a third liquid outlet part and a fourth liquid outlet part, the third liquid outlet part comprises at least one third liquid outlet cavity and at least one third lower spray hole (32), and the fourth liquid outlet part comprises at least one fourth liquid outlet cavity and at least one fourth upper spray hole (31);

wherein the first spray arm (2) and/or the second spray arm (3) are connected with the liquid inlet cavity (1110) through the liquid separating part.

2. The spray arm mechanism of claim 1, wherein: the second spray arm (3) further comprises a third connecting channel (62) communicated with the third liquid outlet portion and a first liquid distribution pipe (71) communicated with the fourth liquid outlet portion, the third connecting channel (62) is connected with the shell (11), and the first liquid distribution pipe (71) is connected to the shell (11) through a fifth connecting channel (61).

3. The spray arm mechanism of claim 2, wherein: the first spray arm (2) further comprises a first connecting channel (221) communicated with the first liquid outlet portion (21) and a second connecting channel (241) communicated with the second liquid outlet portion, and the first connecting channel (221) and the second connecting channel (241) are respectively connected with the shell (11).

4. The spray arm mechanism of claim 3, wherein: the liquid separating part comprises a liquid separating valve plate (14) and a driving element (13) for driving the liquid separating valve plate (14) to rotate, a first opening (141) and a third opening (143) are formed in the liquid separating valve plate (14),

the driving element (13) drives the liquid separation valve plate (14) to rotate until the first opening (141) is communicated with the first connecting channel (221) and the second connecting channel (241), and when the third opening (143) is communicated with the fifth connecting channel (61), the liquid separation assembly is in a first state; the driving element (13) drives the liquid separation valve plate (14) to rotate until the third opening (143) is communicated with the third connecting channel (62), and the liquid separation assembly is in a third state.

5. The spray arm mechanism of claim 4, wherein: a second opening (142) is further formed in the liquid separation valve plate (14), and the size of the first opening (141) is larger than that of the second opening (142);

when the driving element (13) drives the liquid separation valve plate (14) to rotate until the second opening (142) is communicated with the second connecting channel (241), the liquid separation assembly is in a second state.

6. The spray arm mechanism of claim 5, wherein: still be equipped with the fourth trompil on separating valve block (14), drive element (13) drive separating valve block (14) rotate to third trompil (143) with fifth interface channel (61) intercommunication, when the fourth trompil with third interface channel (62) intercommunication, divide liquid subassembly (1) to be in the fourth state.

7. The spray arm mechanism of any one of claims 5 to 6, wherein: a first cylinder part (1112) is arranged on the shell (11), and the first cylinder part (1112) comprises a first liquid inlet channel (1115) communicated with the first connecting channel (221);

the first spray arm (2) comprises a first sleeve (22) connected with the first liquid outlet part (21); the first connecting channel (221) is arranged in the first sleeve (22), the first sleeve (22) is connected with the first cylinder portion (1112) in an inserted mode, the first connecting channel (221) is communicated with the first liquid inlet channel (1115), the driving element (13) drives the liquid separating valve plate (14) to rotate until the second opening (142) is aligned to and communicated with the first liquid inlet channel (1115), and the liquid separating assembly (1) is in the second state.

8. The spray arm mechanism of claim 7, wherein: the shell (11) comprises a cover plate (1121) and a second barrel part (1122) extending upwards from the cover plate (1121), the first spray arm (2) comprises a second sleeve (24) connected with the second liquid outlet part, the second sleeve (24) is at least partially inserted into the second barrel part (1122), the second sleeve (24) is coaxial with the first sleeve (22), the pipe diameter of the first sleeve (22) is smaller than that of the second sleeve (24), and the second connecting channel (241) is communicated with the second liquid outlet part.

9. The spray arm mechanism of claim 8, wherein: the first barrel part (1112) extends upwards through the cover plate (1121), a slot (1125) communicated with the second connecting channel (241) is formed in the cover plate (1121), the liquid distribution assembly (1) comprises a second liquid inlet channel (1129) communicated with the slot (1125), the second liquid inlet channel (1129) is selectively communicated with the liquid inlet cavity (1110), wherein the driving element (13) drives the liquid distribution valve plate (14) to rotate until the first opening (141) is aligned with and communicated with the second liquid inlet channel (1129), and the liquid distribution assembly (1) is in the first state.

10. A cleaning apparatus, characterized by comprising a spray arm mechanism according to any one of claims 1 to 9.

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