CN115868895A

CN115868895A - Spray arm mechanism and cleaning equipment

Info

Publication number: CN115868895A
Application number: CN202111141674.XA
Authority: CN
Inventors: 赵旦; 王宇
Original assignee: Dreame Technology Suzhou Co ltd
Current assignee: Dreame Technology Suzhou Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2023-03-31

Abstract

A spray arm mechanism comprises a liquid distribution assembly, a third spray arm and a rotary spray arm. Divide liquid subassembly to include the casing and be located feed liquor cavity in the casing. The third spray arm includes a lower spray hole. The rotary spray arm is located below the third spray arm and comprises a first spray hole and a second spray hole, and the first spray hole is communicated with the lower spray hole of the third spray arm. Compared with the prior art, the spray arm mechanism can realize multi-angle spraying, and improves the cleaning efficiency.

Description

Spray arm mechanism and cleaning equipment

Technical Field

The invention relates to a spray arm mechanism and cleaning equipment, and belongs to the technical field of cleaning.

Background

In a common cleaning device, such as a dishwasher, a spray arm mechanism is one of important components in the dishwasher, and liquid is sprayed onto tableware through a liquid spray hole on 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 commonly used spray arm mechanism 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 water consumption.

Disclosure of Invention

The invention aims to provide a spray arm mechanism with high cleaning efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme:

a spray arm mechanism comprising:

the liquid separation component comprises a shell, a liquid separation part 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, a first connecting channel connected with the first liquid outlet part, a second liquid outlet part and a second connecting channel communicated with the second liquid outlet part;

the second spray arm is connected with the shell and comprises a third liquid outlet part, a third connecting channel communicated with the third liquid outlet part, a fourth liquid outlet part and a first liquid distribution pipe communicated with the fourth liquid outlet part;

the third spray arm is connected with the shell and comprises a fifth liquid outlet part and a fifth connecting channel connected with the fifth liquid outlet part, and the first liquid distribution pipe is communicated with the fifth connecting channel;

wherein, divide the liquid subassembly have first interface channel, second interface channel and fifth interface channel simultaneously with the first state of feed liquor cavity intercommunication, the second interface channel with the second state of feed liquor cavity intercommunication, the third interface channel with the third state of feed liquor cavity intercommunication to and first interface channel, second interface channel, third interface channel and fifth interface channel simultaneously with the fourth state of feed liquor cavity intercommunication.

As a further improved technical solution of the present invention,

the liquid separation part comprises a liquid separation valve plate and a driving element for driving the liquid separation valve plate to rotate, a first opening and a third opening are arranged on the liquid separation valve plate,

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

As a further improved technical solution of the present invention,

a second opening is formed in the liquid distribution 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 the second state.

As a further improved technical solution of the present invention, a fourth opening is further disposed on the liquid separation valve plate, the driving element drives the liquid separation valve plate to rotate until the first opening is communicated with the first connecting channel and the second connecting channel, the third opening is communicated with the fifth connecting channel, and when the fourth opening is communicated with the third connecting channel, the liquid separation assembly is in the fourth state.

As a further improved technical solution of the present invention, the fifth liquid outlet portion includes at least one fifth lower nozzle hole, and the fifth lower nozzle hole is communicated with the fifth connecting channel.

As a further improved technical solution of the present invention, the third liquid outlet portion includes at least one third liquid outlet cavity and at least one third upper nozzle hole, the third upper nozzle hole is communicated with the third liquid outlet portion, the third liquid outlet cavity is provided with a first through hole, and the third liquid outlet cavity is communicated with the first liquid distribution pipe through the first through hole;

the third liquid outlet part comprises at least one fourth liquid outlet cavity and at least one fourth lower spray hole, the fourth lower spray hole is communicated with the fourth liquid outlet cavity, a second through hole is formed in the fourth liquid outlet cavity, and the fourth liquid outlet cavity is communicated with the second liquid distribution pipe through the second through hole.

As a further improved aspect of the present invention, the first perforations are located inside the second perforations, the first perforations are arranged along a first diagonal, and the second perforations are arranged along a second diagonal intersecting the first diagonal.

As a further improved technical solution of the present invention, the spray arm mechanism includes a liquid distribution pipe assembly connected to the first liquid distribution pipe and the second liquid distribution pipe, the liquid distribution pipe assembly includes a first insertion hole communicated with the first liquid distribution pipe and a second insertion hole communicated with the second liquid distribution pipe; the spray arm mechanism further comprises a liquid distributor matched with the liquid distributor assembly, the liquid distributor comprises a first plug connector and a second plug connector, the first plug connector is plugged with the first jack, and the second plug connector is plugged with the second jack.

As a further improved technical solution of the present invention,

the first liquid outlet part comprises a first liquid outlet cavity and at least one first spray hole, the first spray hole is communicated with the first liquid outlet cavity, and the first liquid outlet cavity is communicated with the first connecting channel;

the second liquid outlet part comprises a second liquid outlet cavity and at least one second spray hole, the second spray hole is communicated with the second liquid outlet cavity, and the second liquid outlet cavity is communicated with the second connecting channel.

As a further improved technical solution of the present invention,

the first spray arm comprises a first sleeve connected with the first liquid outlet cavity, and the second connecting channel is arranged on the first sleeve;

the shell is provided with a first cylinder part, and the first cylinder part comprises a first liquid inlet channel; the first sleeve is connected with the first cylinder portion in an inserting mode, so that the first connecting channel is communicated with the first liquid inlet channel, the driving element drives the liquid separating valve plate to rotate to the second opening and the first liquid inlet channel, and the liquid separating assembly is in the second state.

As a further improved technical solution of the present invention, the housing includes a cover plate and a second cylinder portion extending upward from the cover plate, the first spray arm includes a second sleeve connected to the second liquid outlet chamber, the second sleeve is at least partially inserted into the second cylinder portion, the second sleeve is coaxial with the first sleeve, a pipe diameter of the first sleeve is smaller than a pipe diameter of the second sleeve, and the second connection channel is communicated with the second liquid outlet chamber.

As a further improved technical solution of the present invention,

the first cylinder part extends upwards through the cover plate, a slot communicated with the second connecting channel is formed in the cover plate, and the liquid separation assembly comprises a second liquid inlet channel communicated with the slot;

when the driving element drives the liquid separating valve plate to rotate until the first opening is aligned with and communicated with the second liquid inlet channel, the liquid separating assembly is in the first state.

As a further improved technical scheme of the invention, the size of the first opening is slightly larger than the pipe diameter of the bottom of the second sleeve, and the size of the second opening is slightly smaller than the pipe diameter of the bottom of the first sleeve.

The invention also adopts the following technical scheme: a cleaning device comprises the spray arm mechanism.

Compared with the prior art, the cleaning equipment and the spray arm mechanism have the advantages that the liquid separating assembly is arranged, so that the spray arm mechanism can drive different spray arms to realize multi-angle spraying, different spraying requirements of different requirements are met, and the cleaning efficiency is improved.

Drawings

Fig. 1 is a perspective view of a 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 assembly of fig. 3 in a first position.

Fig. 7 is a schematic view of the first opening of the dispensing assembly in communication with the first spray arm.

Fig. 8 is a schematic view of the second opening of the dispensing assembly in communication with the first spray arm.

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

Fig. 10 is an enlarged view of a portion a of the picture frame of fig. 9, in which the first opening of the dispensing assembly is in communication with the first spray arm.

Fig. 11 is an enlarged view of a portion of the alternative location of fig. 10, wherein the second opening of the dispensing assembly is in communication with the first spray 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 nozzle arm, and the third nozzle 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 view of the second spray arm of fig. 18 when rotated to a certain position and taken along the section line D-D in fig. 18.

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

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

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

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

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

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 statements made in the following exemplary detailed description do not represent all implementations consistent with the present disclosure; 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 present application is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention. The singular forms "a", "an" and "the" as used in the specification and claims of the present invention are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the use of terms such as "first," "second," and the like, in the description and in the claims of the present invention do not denote any order, quantity, or importance, but rather the terms 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" is inclusive of the element that follows "comprising" or "comprises", and equivalents thereof, and does not exclude the presence of elements that precede "comprising" or "comprising" and may include other elements. If "a plurality" is present in the present invention, it means two or more.

Referring to fig. 1 to 16, an illustrative embodiment of the present invention discloses a spray arm mechanism that can be used in a dishwasher to wash dishes by spraying water. 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. In one embodiment of the present invention, the first spray arm 2, the second spray arm 3, and the third spray arm 4 can be driven by water to rotate, so that multi-angle and blind-corner-free spraying is easily achieved.

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

In the illustrated embodiment of the present invention, the housing 11 has 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 invention, the bottom cover 12 is provided with a top wall 121, and the top wall 121 is located at the bottom of the inlet chamber 1110. The top wall 121 is a non-horizontal structure that includes a recess 122 that is downwardly concave. One side of the recess 122 is higher than the other side of the recess 122 to facilitate adjustment of the water 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. A clamping groove 1321 fixed with the rotor 1311 is arranged at the bottom of the rotating shaft 132. The rotating shaft 132 is mounted in the mounting hole 123, and the rotating shaft 132 includes a top end 1322 penetrating through the mounting hole. The top end 1322 protrudes upward from the top wall 121 of the bottom cover 12 for being fixed to the liquid separation 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 one embodiment of the present invention, the first cylinder portion 1112 and the first outer cylinder portion 1113 are both cylindrical and are disposed coaxially. The first barrel portion 1112 has a first fluid inlet passage 1115 extending upward 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 vertically. 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 stud 1116 and/or the channel 1118 of the second connecting stud 1117 can communicate with the liquid inlet cavity 1110 through the corresponding opening of the separating valve sheet 14, so that water can flow into the channel 1118 of the first connecting stud 1116 and/or the channel 1118 of the second connecting stud 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 be communicated with the liquid inlet cavity 1110, and at this time, water 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. The dispensing valve plate 14 includes an extension 140 protruded downwardly at the center thereof. The extension 140 has a fixing hole 1401 for receiving and fixing the top end 1322 of the shaft 132. So set up, when drive element 13 rotates, rotor 1311 can drive pivot 132 is rotatory, and then drives divide liquid valve piece 14 rotatory.

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 round holes. In other embodiments, the liquid separation valve plate 14 further has a fourth opening, a fifth opening, and the like, and can be arranged in multiple ways according to specific requirements.

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 cylindrical body portion 1122 and the second outer cylindrical body portion 1123 are both cylindrical and are disposed coaxially. The first outer cylindrical body 1113 is at least partially inserted into the second outer cylindrical body 1123 and sealed at the connection point to prevent the liquid from flowing out through the gap between the two. The second barrel portion 1122 is provided with outwardly projecting latch projections 1128. In the illustrated embodiment of the invention, the locking protrusion 1128 is a complete ring of protrusions.

The cover plate 1121 is provided with a circular hole 1124, and the first barrel 1112 penetrates out of the cover plate 1121 upwards through the circular hole 1124. The cover plate 1121 is provided with a slot 1125 located outside the circular hole 1124, and the slot 1125 connects the inner cavity of the second outer cylinder 1123 and the inner cavity of the second cylinder 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 pillar 1116 and the second connecting pillar 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 rotation locking arm 25 connected to the second liquid outlet portion 23. In the present embodiment, the first liquid outlet portion 21 is a first spray arm portion located at an upper side, and the second liquid outlet portion 23 is a second spray arm portion located at a lower side. In the illustrated embodiment of the present invention, the first sleeve 22 extends downward from the first liquid outlet portion 21, and the second sleeve 24 extends downward from the second liquid outlet portion 23. The two rotary latch arms 25 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 enlarged. The first liquid outlet portion 21 and the second liquid outlet portion 23 may be fixedly connected by welding or other methods. In the illustrated embodiment of the present invention, the second liquid discharge portion 23 is located below the first liquid discharge portion 21, that is, when the first liquid discharge portion 21 and the second liquid discharge portion 23 are attached, the second liquid discharge portion 23 is located at the bottom of the first liquid discharge 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 part 21 and the second liquid outlet part 23 have independent water flow channels, so as to facilitate independent control.

Specifically, referring to fig. 4 and 10, the first sleeve 22 extends downward beyond the second sleeve 24, i.e., the first sleeve 22 extends downward to protrude beyond 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, so that the first connecting channel 221 communicates with the first fluid inlet channel 1115. In the illustrated embodiment of the invention, the first bushing 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 water leakage.

The second sleeve 24 is at least partially inserted into the second body portion 1122. In the illustrated embodiment of the invention, the second sleeve 24 is coaxial with the first sleeve 22, and the first sleeve 22 has a smaller pipe diameter than 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 being disengaged upwardly from the second barrel portion 1122. In the illustrated embodiment of the invention, the stability of the rotational latch arm 25 during rotation is advantageously improved by providing the latch protrusion 1128 as a complete ring. As can be understood by those skilled in the art, the first liquid outlet 21 and the second liquid outlet 23 in the present invention can be driven by water to realize linkage, so that the first spray arm 2 rotates, and multi-angle spraying without a dead angle is easy to realize. The first spray arm 2 can spray water 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 sheet 14 is slightly larger than the pipe diameter of the bottom of the second sleeve 24, so as to ensure the water 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 water from escaping.

The separating valve plate 14 rotates under the action of the driving element 13. Specifically, referring to fig. 4 to 7 and 10, when the first opening 141 of the liquid separation valve plate 14 is communicated with the first nozzle 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 water simultaneously, so that the first liquid discharge part 21 and the second liquid discharge part 23 spray water simultaneously, thereby increasing water spraying efficiency and being beneficial to shortening cleaning time.

Referring to fig. 5, fig. 6, fig. 8 and fig. 11, when the second opening 142 of the separating valve sheet 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; the second liquid inlet channel 1129 is not communicated with the liquid inlet cavity 1110 under the shielding of the liquid separating valve sheet 14. At this time, only the first sleeve 22 of the first sleeve 22 and the second sleeve 24 discharges water, that is, only the first liquid discharge portion 21 of the first liquid discharge portion 21 and the second liquid discharge portion 23 sprays water, which is beneficial to saving water.

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 to 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 illustrated embodiment of the invention, the third connecting channel 62 has a larger flow cross-section than the fifth connecting channel 61, in order to facilitate the flow division.

The second spray arm 3 includes a fourth upper spray hole 31 and a third lower spray hole 32, and the third upper spray hole 31 and the fourth lower spray hole 32 are respectively communicated with their respective flow passages. 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. And the fifth connecting channel 61 and/or the third connecting channel 62 are selectively communicated with the liquid inlet cavity 1110 through the liquid separating valve sheet 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 stud 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 nozzle arm 3 can spray water, and the fifth lower nozzle hole 41 of the third nozzle arm 4 can also spray water. 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 up and down, and at this time, the liquid inlet cavity 1110 flows into the fifth connecting channel 61 through the third opening 143, so that the third lower nozzle hole 31 of the second nozzle arm 3 can spray water. When the separating valve plate 14 rotates to a certain position, and the third open hole 143 is communicated with both the passage 1118 of the first connecting stud 1116 and the passage 1118 of the second connecting stud 1117, the fourth upper nozzle hole 31 and the third lower nozzle hole 32 of the second nozzle arm 3 can spray water simultaneously, and the fifth lower nozzle hole 41 of the third nozzle arm 4 can spray water.

Those skilled in the art will understand that 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 can effectively solve the problem of cleaning dead corners, and does not increase water consumption; in addition, the washing time of the whole machine can be shortened, and the washing 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 passage 711 and the second flow passage 712 are two independent internal flow passages 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 dispensing tube assembly 8 connected to the liquid dispensing tube 7, and the liquid dispensing tube 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 tube 7 includes a first liquid distribution tube 71 and a second liquid distribution tube 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 path 711 communicating with the third lower nozzle 32, and the second liquid distribution pipe 72 includes a second flow path 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 distributing pipe 71 and the second liquid distributing pipe 72 are eccentrically disposed. As shown in fig. 20, the second nozzle 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 through holes 33 are arranged along a first diagonal line D1, and the second through holes 34 are arranged along a second diagonal line D2 intersecting the first diagonal line D1, so as to prevent eccentricity of the second spray arm 3 when it rotates. The first flow path 711 is selectively communicated with the upper nozzle hole 31 of the second spray arm 3 through the first penetration hole 33, and the second flow path 712 is selectively communicated with the lower nozzle hole 32 of the second spray arm 3 through the second penetration 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 passage 711 and a plurality of second insertion holes 82 communicating with the second flow passage 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 distributor 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 in a left-right direction 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 plug 94 and the second lower plug 96 are aligned left and right 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 pipe assembly 8, and are arranged in a matrix shape as a whole. The dispenser 9 is removably connected to the dispensing tube assembly 8. In the illustrated embodiment of the present invention, the first plug connector 91 and the second plug connector 92 are sleeved with sealing rings to improve the sealing performance after assembly and prevent water leakage.

In the illustrated embodiment of the present invention, the position of the liquid dispensing tube assembly 8 can be adjusted up and down, thereby driving the basket of the dishwasher to be adjusted up and down.

Referring to fig. 23, when the liquid dispensing tube assembly 8 is located at a certain height (at this time, the bowl basket is located 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 dispensing tube assembly 8). At this time, the first upper jack 811 and the second upper jack 821 are conductive, the first middle jack 812 and the second middle jack 822 are nonconductive, and the first lower jack 813 and the 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 stability of the butt joint of the liquid dispenser 9 and the liquid dispensing tube assembly 8 is improved, and a certain positioning effect can be achieved.

Referring to fig. 24, when the liquid distribution pipe assembly 8 is located at another height position (in this case, 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. By inserting the first upper plug 93 and the second upper plug 95 into the first upper insertion hole 811 and the second upper insertion hole 821 respectively, and inserting the first lower plug 94 and the second lower plug 96 into the first lower insertion hole 813 and the second lower insertion hole 823 respectively, the butt joint stability of the liquid dispenser 9 and the liquid dispensing pipe assembly 8 can be improved, and a certain positioning function can be achieved.

In addition, in order to further improve the convenience of the liquid dispenser 9 and the liquid dispensing tube assembly 8 in butt joint, 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 dispenser 9, and the guide groove 83 is disposed on the liquid dispensing tube assembly 8. Of course, in other embodiments, the guide pillar 97 may be provided on the liquid dispensing tube assembly 8, and the guide groove 83 may be provided on the liquid dispensing device 9, so that the guide function can be achieved when the two are combined. The design of the guide posts 97 and the guide grooves 83 can be flexibly adjusted according to actual needs, which is not described in detail herein.

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 referred to 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 for illustrating the invention and not for limiting the technical scheme described in the invention, and the understanding of the present invention should be based on the technical personnel in the technical field, and although the present invention has been described in detail by referring to the above embodiments, the ordinary technical personnel in the technical field should understand that the technical personnel in the technical field can still make modifications or equivalent substitutions to the present invention, and all technical schemes and modifications thereof without departing from the spirit and scope of the present invention should be covered in the claims of the present invention.

Claims

1. A spray arm mechanism, comprising:

the liquid separation component (1), wherein the liquid separation component (1) comprises a shell (11), a liquid separation part and a liquid inlet cavity (1110) positioned in the shell (11);

a first spray arm (2) connected to the housing (11) and including a first liquid outlet portion (21), a first connection passage (221) connected to the first liquid outlet portion (21), a second liquid outlet portion (23), and a second connection passage (241) communicated with the second liquid outlet portion (23);

a second spray arm (3) connected to the housing (11) and including a third liquid outlet portion (32), a third connection passage (62) communicating with the third liquid outlet portion (32), a fourth liquid outlet portion (31), and a first liquid distribution pipe (71) communicating with the fourth liquid outlet portion (31);

the third spray arm (4) is connected with the shell (11) and comprises a fifth liquid outlet part (41) and a fifth connecting channel (61) connected with the fifth liquid outlet part (41), and the first liquid distribution pipe (71) is communicated with the fifth connecting channel (61);

wherein, divide liquid subassembly (1) have first connecting channel (221), second connecting channel (241) and fifth connecting channel (61) simultaneously with the first state of feed liquor cavity (1110) intercommunication, second connecting channel (241) with the second state of feed liquor cavity (1110) intercommunication to and third connecting channel (62) with the third state of feed liquor cavity (1110) intercommunication.

2. The spray arm mechanism of claim 1, 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 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 liquid separating assembly (1) is in the first state; when the driving element (13) drives the liquid separating valve plate (14) to rotate until the third opening (143) is communicated with the third connecting channel (62), the liquid separating assembly (1) is in the third state.

3. The spray arm mechanism of claim 2, 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 (1) is in the second state.

4. The spray arm mechanism of claim 3, wherein: the spray arm mechanism further comprises a first connecting channel (221), a second connecting channel (241), a third connecting channel (62) and a fifth connecting channel (61) and is simultaneously in a fourth state communicated with the liquid inlet cavity (1110), a fourth opening is further formed in the liquid separating valve plate (14), the driving element (13) drives the liquid separating valve plate (14) to rotate to the first opening (141) and the first connecting channel (221) and the second connecting channel (241) are communicated, the third opening (143) and the fifth connecting channel (61) are communicated, the fourth opening and the third connecting channel (62) are communicated, and the liquid separating assembly (1) is in the fourth state.

5. The spray arm mechanism of any of claims 1 to 4, wherein: the fifth liquid outlet part comprises at least one fifth lower spray hole (41), and the fifth lower spray hole (41) is communicated with the fifth connecting channel (61).

6. The spray arm mechanism of any of claims 1 to 4, wherein: the third liquid outlet part comprises at least one third liquid outlet cavity and at least one third upper spray hole (31), the third upper spray hole (31) is communicated with the third liquid outlet part, a first through hole (33) is formed in the third liquid outlet cavity, and the third liquid outlet cavity is communicated with the first liquid distribution pipe (71) through the first through hole (33);

the third liquid outlet part comprises at least one fourth liquid outlet cavity and at least one fourth lower spray hole (32), the fourth lower spray hole (32) is communicated with the fourth liquid outlet cavity, a second perforation (34) is arranged on the fourth liquid outlet cavity, and the fourth liquid outlet cavity is communicated with the second liquid distribution pipe (72) through the second perforation (34).

7. The spray arm mechanism of claim 6, wherein: the first perforations (33) are located inside the second perforations (34), the first perforations (33) being arranged along a first diagonal (D1), the second perforations (34) being arranged along a second diagonal (D2) intersecting the first diagonal (D1).

8. The spray arm mechanism of claim 6, wherein: the spray arm mechanism comprises a liquid dispensing pipe assembly (8) connected with the first liquid dispensing pipe (71) and the second liquid dispensing pipe (72), the liquid dispensing pipe assembly (8) comprises a first insertion hole (81) communicated with the first liquid dispensing pipe (71) and a second insertion hole (82) communicated with the second liquid dispensing pipe (72); the spray arm mechanism further comprises a liquid distributor (9) matched with the liquid distributor component (8), wherein the liquid distributor (9) comprises a first plug-in connector (91) and a second plug-in connector (92), the first plug-in connector (91) is plugged with the first jack (81), and the second plug-in connector (92) is plugged with the second jack (82).

9. The spray arm mechanism of any of claims 1 to 4, wherein: the first liquid outlet part (21) comprises a first liquid outlet cavity and at least one first spray hole (211), the first spray hole (211) is communicated with the first liquid outlet cavity, and the first liquid outlet cavity is communicated with the first connecting channel (221);

the second liquid outlet part comprises a second liquid outlet cavity and at least one second nozzle hole (231), the second nozzle hole (231) is communicated with the second liquid outlet cavity, and the second liquid outlet cavity is communicated with the second connecting channel (241).

10. The spray arm mechanism of claim 9, wherein: the first spray arm (2) comprises a first sleeve (22) connected with the first liquid outlet cavity (21), and the second connecting channel (241) is arranged on the first sleeve (22);

a first cylinder part (1112) is arranged on the shell (11), and the first cylinder part (1112) comprises a first liquid inlet channel (1115); the first sleeve pipe (22) is connected with the first barrel part (1112) in an inserting 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 to the second opening (142) and the first liquid inlet channel (1115) in a communicating mode, and the liquid separating assembly (1) is in the second state.

11. The spray arm mechanism of claim 10, 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 cavity, 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 cavity.

12. The spray arm mechanism of claim 10, 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), and the liquid separation component (1) comprises a second liquid inlet channel (1129) communicated with the slot (1125);

the driving element (13) drives the liquid separation 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 separation assembly (1) is in the first state.

13. The spray arm mechanism of claim 12, wherein: the size of the first opening (141) is slightly larger than the pipe diameter of the bottom of the second sleeve (24), and the size of the second opening (142) is slightly smaller than the pipe diameter of the bottom of the first sleeve (22).

14. A cleaning apparatus, comprising a spray arm mechanism as claimed in any one of claims 1 to 13.