CN111329425B

CN111329425B - A spray arm and cleaning machine for cleaning machine

Info

Publication number: CN111329425B
Application number: CN202010151519.5A
Authority: CN
Inventors: 潘嘉威
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2023-02-10
Anticipated expiration: 2040-03-06
Also published as: CN111329425A

Abstract

The invention relates to a spray arm for a cleaning machine and the cleaning machine, wherein the spray arm for the cleaning machine comprises a main spray arm, a main flow channel is formed inside the main spray arm, and a water inlet channel for supplying water to flow into the main flow channel is formed in the main spray arm; the inner part of the auxiliary spray arm is provided with a sub-channel which is in fluid communication with the main channel, and at least one of the auxiliary spray arm and the main spray arm is provided with a spray hole; the main spray arm is internally provided with a chamber which is not communicated with the main flow passage and the water inlet passage; the auxiliary spray arm can be arranged on the main spray arm in a way of moving back and forth along the length direction of the main spray arm; the spray arm also comprises a fixing piece which is positioned in the water inlet channel, and the main spray arm is arranged to rotate around the fixing piece; the linkage assembly is at least partially positioned in the cavity and used for enabling the auxiliary spraying arm to move back and forth along the length direction of the main spraying arm, the output end of the linkage assembly is in transmission connection with the auxiliary spraying arm, and the input end of the linkage assembly is arranged to rotate around the fixing piece. The spray arm can be reliably extended and retracted to increase the cleaning area.

Description

A spray arm and cleaning machine for cleaning machine

Technical Field

The invention belongs to the technical field of dish washing machines, and particularly relates to a spray arm for a cleaning machine and the cleaning machine.

Background

With the increasing living standard of people, the dish washing machine is used as a kitchen household appliance and is more and more introduced into families. The current market of dish-washing machines generally includes three types, namely table type, cabinet type and trough type, wherein the table type dish-washing machine is an integral independent structure and is generally placed on a table top for use; the cupboard type dishwasher is also a separate structure, but needs to be embedded into a kitchen cabinet for use; the sink dishwasher is combined with a water tank and is generally installed in a kitchen cabinet for use.

The above-mentioned various types of dish washers generally achieve a washing action by a water pump lifting up water and spraying it toward dishes in a washing space. Chinese utility model patent "a spray arm and applied and cleaning machine with this spray arm" as applicant's prior application, its patent number is ZL201721042136.4, and the publication number of granting is CN208243536U, discloses a spray arm and includes the spray arm body, thereby this spray arm body inside cavity forms the chamber that catchments, set up the apopore that is linked together with the chamber that catchments on the upper surface of spray arm body, still be provided with the gas filling mouth on the upper surface of spray arm body, this gas filling mouth with the chamber that catchments is linked together. Spray arm is length fixed in this patent, and not telescopic, just carries out the circumference rotation around the centre of a circle, and the swept area of spray arm spun water is also circular, because the dish washer inner chamber is the cube, so the unclean condition can appear wasing in four angles in water tank bottom, washs promptly and has the dead angle to exist.

The Chinese utility model patent of the applicant previously applied discloses a spray arm and a cleaning machine applying the spray arm, the patent number of which is ZL 201721289180.5, and the publication number of which is CN208610787U, and the spray arm comprises a main spray arm, the main spray arm is hollow and is formed with at least two shunt channels, and the end surface of the main spray arm is provided with at least two water outlet holes respectively communicated with the corresponding shunt channels; and at least two auxiliary spraying arms which are respectively rotatably arranged on the corresponding water outlet holes and communicated with the water outlet holes, and the auxiliary spraying arms are provided with water spraying holes and can rotate under the action of water flow sprayed from the water spraying holes. According to the patent, at least two auxiliary spray arms are arranged on the main spray arm, so that the spray area can be effectively enlarged, the cleaning rate is improved, the auxiliary spray arms rotate completely under the action of water flow sprayed by the water spray holes, when the auxiliary spray arms do not move to a dead angle, the auxiliary spray arms and the main spray arm form the maximum spray area, when the auxiliary spray arms move to the dead angle, the auxiliary spray arms rotate to deviate from the length direction of the main spray arm, the spray area is reduced on the contrary, the dead angle cannot be effectively sprayed, and the reliability is poor.

Accordingly, further improvements to existing spray arms are needed.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a spray arm for a cleaning machine, which can reliably extend and retract to increase the cleaning area, in view of the current situation of the prior art.

The second technical problem to be solved by the invention is to provide a cleaning machine with a reliably telescopic spray arm to achieve the purpose of increasing the cleaning area.

A third object of the present invention is to provide a cleaning machine capable of sufficiently cleaning corners of a tank having a substantially rectangular horizontal cross section by accurately extending and retracting a spray arm.

In order to solve the first technical problem, the invention adopts the technical scheme that: a spray arm for a cleaning machine, comprising:

the main spraying arm is internally provided with a main flow passage, and the main spraying arm is provided with a water inlet channel for supplying water to flow into the main flow passage;

the auxiliary spray arm is movably connected to the main spray arm, a sub-runner in fluid communication with the main runner is arranged in the auxiliary spray arm, and at least one of the auxiliary spray arm and the main spray arm is provided with a spray hole for spraying water flow;

the method is characterized in that:

the main spray arm is internally provided with a chamber which is not communicated with the main runner and the water inlet channel;

the auxiliary spray arm can be arranged on the main spray arm in a reciprocating manner along the length direction of the main spray arm;

the spray arm also comprises

A fixture located within the intake passage, wherein the main shower arm is arranged to rotate around the fixture;

the linkage assembly is at least partially positioned in the cavity and used for enabling the auxiliary spraying arm to move back and forth along the length direction of the main spraying arm, the output end of the linkage assembly is in transmission connection with the auxiliary spraying arm, and the input end of the linkage assembly is arranged to rotate around the fixing piece.

The fixing member may be in the form of a bracket or a connecting ring, but preferably, the fixing member is an elliptical connecting ring located in the water inlet passage, and the input end of the linkage assembly is movably limited on the connecting ring along the circumferential direction of the connecting ring. Therefore, the input end of the linkage assembly drives the auxiliary spraying arm to move back and forth along the length direction of the main spraying arm in the process of moving along the circumferential surface of the connecting ring.

The auxiliary spray arm can move relative to the main spray arm in various ways, the auxiliary spray arm can be sleeved outside the main spray arm or inserted into the main spray arm, and a telescopic mechanism can also be adopted, but preferably, the auxiliary spray arm is connected with the main spray arm through a telescopic pipe capable of stretching along the length direction of the main spray arm, and a branch channel of the auxiliary spray arm is in fluid communication with the main channel through a water flow channel in the telescopic pipe.

In order to increase the spraying area, the number of the auxiliary spraying arms is two, the auxiliary spraying arms are respectively arranged at two ends of the main spraying arm, each auxiliary spraying arm corresponds to one group of linkage assemblies, and the two groups of linkage assemblies are arranged oppositely.

The linkage assembly has various structural forms, such as a sliding form that a sliding groove is matched with a sliding block, a form that a sliding way is matched with a ball in a rolling way, and other forms, but preferably, the linkage assembly comprises

The ball is positioned in the water inlet channel and moves along the peripheral surface of the connecting ring, one of the ball and the connecting ring is a magnetic part, and the other of the ball and the connecting ring is a magnetic conduction part or a magnetic part which are attracted magnetically; or, the ball is positioned in the water inlet channel and is limited in the slide way of the connecting ring extending along the circumferential direction of the connecting ring in a sliding way;

one end of the connecting rod assembly penetrating into the water inlet channel is connected with the ball on the corresponding side, and the other end of the connecting rod assembly is connected with the auxiliary spraying arm on the corresponding side; under the action of the connecting rod assembly, the telescopic pipe is in an expanded state when the ball is positioned at the long shaft of the connecting ring, and the telescopic pipe is in a contracted state when the ball is positioned at the short shaft of the connecting ring.

There are various forms of construction of the connecting-rod assembly, but preferably the connecting-rod assembly comprises

The first connecting rod extends along the length direction of the main spray arm, and one end of the first connecting rod penetrates into the water inlet channel and is connected with the ball in a rotating mode;

the second connecting rod is V-shaped, and the corner of the second connecting rod is connected with the other end of the first connecting rod; and

and the first ends of the two third connecting rods are respectively connected with the two V-shaped end parts of the second connecting rod, and the second ends of the two third connecting rods are connected with the auxiliary spray arm.

In order to prevent the third connecting rod from deviating, the third connecting rod extends along the side edge of the main spray arm, correspondingly, a limiting groove for at least partially accommodating the third connecting rod is formed in the cavity, and the third connecting rod is limited in the limiting groove in a sliding mode. Therefore, the limiting groove provides a guiding function for the sliding of the third connecting rod.

Preferably, the sprue is including the chamber that catchments that is located the middle part, inhalant canal sets up on the wall in the chamber catchments, have respectively in the sprue from the both sides in chamber that catchments along the first runner and the second runner that main shower arm's length direction extended, first runner and second runner all with chamber fluid intercommunication catchments. Thus, the water flow can be diffused all around.

The spray holes can be formed in the main spray arm, the auxiliary spray arm and both the main spray arm and the auxiliary spray arm, and preferably, the main spray arm and the auxiliary spray arm are provided with the spray holes in order to increase the spray area.

In order to prevent interference with the spraying of the items to be washed in the washing chamber by the spray arm, the main flow channel is divided into two layers from the chamber in the axial direction along the rotation axis of the spray arm, and is located downstream of the chamber in the direction of the water flow entering from the water inlet channel.

In order to solve the second technical problem, the invention adopts the following technical scheme: a cleaning machine with foretell spray arm which characterized in that: the washing machine comprises a box body, wherein the box body is provided with a hollow washing cavity, a spraying arm is horizontally and rotatably arranged at a position adjacent to the bottom in the washing cavity, a water inlet channel penetrates through the cavity and is formed in the center of the bottom of a main flow channel, and a spraying hole is formed in the upper wall surface of the spraying arm.

In order to solve the third technical problem, the technical scheme adopted by the invention is as follows: the horizontal cross section of the box body is approximately rectangular, and the long axis of the connecting ring is arranged along the diagonal direction of the rectangle. When the spray arm is rotated in the diagonal direction, the sub spray arm moves in a direction away from the main spray arm, and the spray arm is in an expanded state, thereby spraying water to the corner of the water tank.

In order to rapidly pump water into the main flow channel, a power assembly capable of pumping water into the main flow channel through the water inlet channel at a high speed is arranged at the bottom of the box body, and at least part of the power assembly is located below the spray arm.

The power assembly has various structural forms, but preferably, the power assembly comprises a diversion bracket, an impeller and a motor, the diversion bracket is fixedly connected with the bottom wall of the washing cavity, the upper part of the diversion bracket is positioned in the water inlet channel and is relatively and fixedly connected with the connecting ring, and a channel for circularly conveying fluid is arranged in the diversion bracket; the impeller part is arranged in the channel, the top of the impeller penetrates through the connecting ring and is positioned above the connecting ring, and the lower part of the impeller is connected with an output shaft of the motor; the lower end face of the water inlet channel of the main spray arm is rotatably arranged on the diversion bracket.

Compared with the prior art, in the spray arm for the cleaning machine, the power input end of the linkage assembly rotates around the fixing piece, so that the auxiliary spray arm at the end part of the main spray arm moves back and forth along the length direction of the main spray arm, and the cleaning area of the spray arm is increased; the length of the spray arm can be changed reliably by matching the linkage assembly with the fixing piece, a sliding piece is not required to be arranged on the outer wall surface of the spray arm separately, and the failure of the extension of the auxiliary spray arm caused by the interference of water flow on the rotation of the spray arm due to an external part is avoided in the rotation process of the spray arm; the mounting adopts oval-shaped go-between, and the major axis of go-between is along the diagonal direction of box horizontal cross section, so, when the spray arm rotates to the box diagonal, can reliably stretch out under the effect of linkage subassembly, and the increase sprays the washing that the area realized the box corner.

Drawings

Fig. 1 is a schematic structural view of a spray arm according to an embodiment of the present invention (a telescopic pipe is in an expanded state);

FIG. 2 is a schematic view of the structure of FIG. 1 from another angle;

figure 3 is a cross-sectional view of the telescopic tube of figure 1 in an expanded condition;

FIG. 4 is a sectional view of the telescopic tube of the present embodiment in a partially expanded state;

FIG. 5 is a schematic view of a portion of the structure of FIG. 1;

FIG. 6 is a schematic view of a portion of the telescopic tube of FIG. 1 in a contracted state;

fig. 7 is a schematic perspective exploded view of the spray wall in the retracted state of the telescopic tube in the present embodiment;

FIG. 8 is a schematic perspective exploded view of the assembly of FIG. 7 at another angle;

FIG. 9 is a schematic structural view of the spray arm mounted in the tank;

FIG. 10 is a schematic view of another angular portion of the structure of FIG. 9;

FIG. 11 is a cross-sectional view of a portion of the structure of FIG. 10;

FIG. 12 is a schematic perspective exploded view of a portion of the structure of FIG. 9;

FIG. 13 is a schematic perspective exploded view of FIG. 12;

FIG. 14 is a schematic exploded perspective view of FIG. 13;

FIG. 15 is a schematic view of a part of a spray arm according to a second embodiment of the present invention;

FIG. 16 is a cross-sectional view of a spray arm according to a second embodiment of the present invention;

fig. 17 is an enlarged schematic view of a portion a in fig. 16.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

The first embodiment is as follows:

as shown in fig. 1 to 14, a first preferred embodiment of the present invention.

As shown in fig. 9 and 10, the cleaning machine of this embodiment includes a tank 5, a shower arm, and a power assembly. The box body 5 is provided with a washing cavity 5a which is hollow inside and is open at the top, a spray arm is horizontally and rotatably arranged in the washing cavity 5a at a position close to the bottom, and a power assembly is arranged at the bottom of the box body 5 and at least partially positioned below the spray arm.

As shown in fig. 1 to 8, the spray arm for the cleaning machine includes a main spray arm 2, an auxiliary spray arm 3, a linkage assembly and a fixing member relatively fixedly connected with the bottom wall of a box 5.

As shown in fig. 1 to 8, the main spray arm 2 is gradually reduced in width from the center to both ends in the length direction, the main spray arm 2 is arranged to rotate around a fixing member, the fixing member is an elliptical connection ring 11, the connection ring 11 is located in the water inlet passage 211, and the main spray arm 2 rotates around the connection ring 11. While the horizontal cross-section of the tank 5 is substantially rectangular, the long axis of the connection ring 11 is arranged along the diagonal of the rectangle, as shown in particular in fig. 9.

As shown in fig. 3 to 4, a main flow channel 21 and a chamber 22 which are not communicated with each other are formed inside the main spray arm 2, a water inlet channel 211 for supplying water into the main flow channel 21 is formed on the main spray arm 2, the water inlet channel 211 penetrates through the chamber 22 and is formed in the center of the bottom of the main flow channel 21, and the water inlet channel 211 and the chamber 22 are not communicated with each other; and the main flow channel 21 and the chamber 22 are layered in the axial direction along the rotation axis of the spray arm, and the main flow channel 21 is located downstream of the chamber 22 in the direction of the water flow entering from the water inlet channel 211, and in this embodiment, the main flow channel 21 and the chamber 22 are arranged up and down, as shown in fig. 3, 4 and 11. In addition, the main spray arm 2 may adopt an integrated design or a split design, in this embodiment, the main spray arm 2 includes an upper spray arm plate 2a, a middle plate 2b and a lower spray arm plate 2c which are sequentially arranged from top to bottom, a main flow channel 21 is arranged in a space formed by the middle plate 2b and the upper spray arm plate 2a in an enclosing manner, a water inlet channel 211 is arranged at the central position of the middle plate 2b, and a first spray hole 212 is arranged on the upper spray arm plate 2 a; a chamber 22 is formed between the intermediate plate 2b and the lower spray arm plate 2 c.

As shown in fig. 5 to 8, the main flow passage 21 includes a water collecting chamber 21a located in the middle, the water inlet channel 211 is opened on the wall surface of the water collecting chamber 21a, the main flow passage 21 has a first flow passage 21b and a second flow passage 21c extending from two sides of the water collecting chamber 21a along the length direction of the main shower arm 2, and both the first flow passage 21b and the second flow passage 21c are in fluid communication with the water collecting chamber 21a, as shown in fig. 5 to 8 and 14; and the upper wall surface of the main flow passage 21 is provided with a first spray hole 212 for spraying water flowing into the washing chamber 5 a.

As shown in fig. 10 to 14, the power assembly is disposed at the bottom of the box 5 and at least partially below the spray arm for pumping water into the main channel 21 through the water inlet channel 211 at a high speed; the power assembly comprises a diversion bracket 61, an impeller 62 and a motor 63, wherein the bottom of the connecting ring 11 is provided with a downward extending inserting plate 111, the diversion bracket 61 is fixedly connected with the bottom wall of the washing cavity 5a, and the upper part of the diversion bracket 61 is positioned in the water inlet channel 211 and is relatively and fixedly connected with the inserting plate 111 of the connecting ring 11; the guide bracket 61 is provided with a channel 611 for circularly conveying fluid, the impeller 62 is partially arranged in the channel 611, the top of the impeller 62 penetrates through the connecting ring 11 and is positioned above the connecting ring 11, and the lower part of the impeller 62 is connected with an output shaft of the motor 63; the lower end surface of the main spray arm water inlet channel 211 is rotatably arranged on the diversion bracket 61. In this embodiment, the diversion bracket 61 is fixed on the bottom wall of the box 5 through the fixing seat 7, wherein the diversion bracket 61 is fixed to the fixing seat 7 in a clamping manner, and the fixing seat 7 is fixed on the bottom wall of the box 5 through a connecting piece, which is usually a screw or a bolt.

As shown in fig. 1 to 8, two auxiliary spray arms 3 are provided and are respectively connected to two ends of the main spray arm 2 in the length direction, and each auxiliary spray arm 3 is connected to the main spray arm 2 through a telescopic pipe 32 moving in the length direction of the main spray arm 2, so that each auxiliary spray arm 3 can move back and forth in the length direction of the main spray arm 2 under the action of the linkage assembly; the extension tube 32 has a hollow water flow passage, the sub spray arm 3 has a sub flow passage 31 in fluid communication with the main flow passage 21, and the sub flow passage 31 of the sub spray arm 3 is in fluid communication with the main flow passage 21 through the water flow passage in the extension tube 32 on the corresponding side; in addition, a second spraying hole 311 is formed on the upper wall plate of the secondary spraying arm 3, and the second spraying hole 311 is in fluid communication with the branch channel 31 and is used for spraying water flow in the branch channel 31.

As shown in fig. 8 and 14, each secondary spray arm 3 corresponds to one group of linkage assemblies, and there are two groups of linkage assemblies, and the two groups of linkage assemblies are arranged oppositely. The linkage assemblies are used for enabling the auxiliary spraying arms 3 to move back and forth along the length direction of the main spraying arm 2, each group of linkage assemblies is at least partially located in the cavity 22, the output ends of each group of linkage assemblies are in transmission connection with the auxiliary spraying arms 3 on the corresponding side, and the input ends of the linkage assemblies are arranged to rotate around the fixing pieces. Specifically, each linkage assembly comprises a ball 41 and a connecting rod assembly 42, wherein the ball 41 moves along the outer peripheral surface of the connecting ring 11, one of the ball 41 and the connecting ring 11 is a magnetic member, the other one of the ball 41 and the connecting ring 11 is a magnetic conductive member or a magnetic member, and the ball 41 and the connecting ring 11 are magnetically attracted, so that the ball 41 is limited on the connecting ring 11 along the circumferential movement of the connecting ring 11. As shown in fig. 8 and 14, one end of the link assembly 42 is connected to the ball 41, and the other end is connected to the sub spray arm 3 on the corresponding side, and the link assembly 42 includes a first link 421, a second link 422, and a third link 423. The first link 421 extends along the length direction of the main shower arm 2, and one end of the first link 421 penetrates into the water inlet channel 211 to be connected with the ball 41 on the corresponding side in a rotating manner; the second connecting rod 422 is V-shaped, and the corner of the second connecting rod 422 is connected with the other end of the first connecting rod 421; the number of the third connecting rods 423 is two, the first ends of the two third connecting rods 423 are respectively connected with the two end parts of the second connecting rod 422, and the second ends of the third connecting rods 423 are both connected with the secondary spray arm 3. The third link 423 extends along the side edge of the main spray arm 2, and correspondingly, as shown in fig. 7 and 8, a limiting groove 222 for at least partially accommodating the third link 423 is formed in the chamber 22, and the third link 423 is slidably limited in the limiting groove 222. In this way, under the action of the connecting rod assembly 42, the telescopic tube 32 is in the expanded state when the balls 41 are located at the long axis of the connecting ring 11, i.e. at the diagonal of the rectangle of the box body 5, as shown in particular in fig. 5; at the location of the balls 41 at the short axis of the connection ring 11, the bellows 32 is in a contracted state, as shown in particular in fig. 6.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion, respectively), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion or/and be transported to the second portion, and may be a direct communication between the first portion and the second portion, or an indirect communication between the first portion and the second portion via at least one third element, such as a fluid channel, e.g., a pipe, a channel, a conduit, a flow guide, a hole, a groove, or a chamber that allows a fluid to flow through, or a combination thereof.

Example two:

fig. 15 to 17 show a second preferred embodiment of the present invention.

This embodiment differs from the first embodiment only in that:

the ball 41 in the linkage assembly is engaged with the connection ring 11 in a different manner, specifically, the connection ring 11 has a slide track 112 extending along the circumferential direction thereof, the slide track 112 is an annular groove with an open top, and the ball 41 in the linkage assembly is slidably limited in the slide track of the connection ring 11, so that the ball 41 is limited on the connection ring 11 along the circumferential direction of the connection ring 11, as shown in fig. 15 to 17.

Claims

1. A spray arm for a cleaning machine, comprising:

the main spray arm (2) is internally provided with a main flow passage (21), and the main spray arm (2) is provided with a water inlet channel (211) for supplying water into the main flow passage (21);

the auxiliary spray arm (3) is movably connected to the main spray arm (2), a sub-flow passage (31) which is in fluid communication with the main flow passage (21) is formed in the auxiliary spray arm, and at least one of the auxiliary spray arm (3) and the main spray arm (2) is provided with a spray hole for spraying water flow;

the method is characterized in that:

the inner part of the main spray arm (2) is provided with a chamber (22) which is not communicated with the main flow passage (21) and the water inlet passage (211);

the auxiliary spray arm (3) is arranged on the main spray arm (2) in a manner of moving back and forth along the length direction of the main spray arm (2), and is connected with the main spray arm (2) through a telescopic pipe (32) capable of stretching along the length direction of the main spray arm (2), and a branch flow passage (31) of the auxiliary spray arm (3) is in fluid communication with the main flow passage (21) through a water flow passage in the telescopic pipe (32);

the spray arm also comprises

A fixture located in the water inlet channel (211), the fixture being an oval connecting ring (11), wherein the main spray arm (2) is arranged to rotate around the fixture;

the linkage assembly is at least partially positioned in the cavity (22) and used for enabling the auxiliary spraying arm (3) to move back and forth along the length direction of the main spraying arm (2), the output end of the linkage assembly is in transmission connection with the auxiliary spraying arm (3), and the input end of the linkage assembly is limited on the connecting ring (11) along the circumferential motion of the connecting ring (11).

2. The spray arm of claim 1, wherein: the two auxiliary spray arms (3) are respectively arranged at two ends of the main spray arm (2) in the length direction, each auxiliary spray arm (3) corresponds to one group of linkage assemblies, and the two groups of linkage assemblies are arranged oppositely.

3. The spray arm of claim 2, wherein: the linkage component comprises

The ball (41) is positioned in the water inlet channel (211) and moves along the peripheral surface of the connecting ring (11), one of the ball (41) and the connecting ring (11) is a magnetic part, and the other one is a magnetic conduction part or a magnetic part which are attracted magnetically; or, the ball (41) is positioned in the water inlet channel (211) and is limited in the slide way (112) of the connecting ring (11) extending along the circumferential direction in a sliding way;

one end of the connecting rod component (42) penetrating into the water inlet channel (211) is connected with the ball (41) on the corresponding side, and the other end of the connecting rod component is connected with the auxiliary spraying arm (3) on the corresponding side; under the action of a connecting rod assembly (42), the telescopic pipe (32) is in an expanded state when the ball (41) is positioned at the long axis of the connecting ring (11), the telescopic pipe (32) is in a contracted state when the ball (41) is positioned at the short axis of the connecting ring (11), and the connecting rod assembly (42) comprises

The first connecting rod (421) extends along the length direction of the main spray arm (2), and one end of the first connecting rod penetrates into the water inlet channel (211) to be connected with the ball (41) in a rotating way;

a second link (422) having a V-shape, a corner thereof being connected to the other end of the first link (421); and

and two third connecting rods (423) are provided, the first ends of the third connecting rods are respectively connected with the two V-shaped end parts of the second connecting rod (422), and the second ends of the third connecting rods are connected with the auxiliary spray arm (3).

4. The spray arm of claim 3, wherein: the third connecting rod (423) extends along the side edge of the main spray arm (2), correspondingly, a limiting groove (222) for at least partially accommodating the third connecting rod (423) is formed in the cavity (22), and the third connecting rod (423) is limited in the limiting groove (222) in a sliding manner.

5. The spray arm of claim 1, wherein: the utility model discloses a shower nozzle, including the sprue (21), inhalant canal (211) is formed on the wall of catchment chamber (21 a) including catchment chamber (21 a) that is located the middle part, inhalant canal (211) have respectively in sprue (21) from catchment chamber (21 a) both sides along the first runner (21 b) and the second runner (21 c) that the length direction of main shower arm (2) extended, first runner (21 b) and second runner (21 c) all with catchment chamber (21 a) looks fluid communication.

6. The spray arm of claim 1, wherein: and the main spray arm (2) and the auxiliary spray arm (3) are provided with spray holes.

7. The spray arm of any one of claims 1 to 6, wherein: the main flow passage (21) is divided into two layers from the chamber (22) in an axial direction along a rotation axis of the spray arm, and the main flow passage (21) is located downstream of the chamber (22) in a direction of water flow entering from a water inlet passage (211).

8. A cleaning machine having a spray arm as claimed in any one of claims 1 to 7, characterized in that: the washing machine comprises a box body (5), wherein the box body is provided with a washing cavity (5 a) with a hollow interior, a spraying arm is horizontally and rotatably arranged at a position adjacent to the bottom in the washing cavity (5 a), a water inlet channel (211) penetrates through a cavity (22) and is formed in the center of the bottom of a main flow channel (21), and a spraying hole is formed in the upper wall surface of the spraying arm.

9. The cleaning machine of claim 8, wherein: the horizontal cross section of the box body (5) is rectangular, and the long axis of the connecting ring (11) is arranged along the diagonal direction of the rectangle.

10. The washing machine as claimed in claim 9, wherein: the bottom of box (5) is provided with can be with water high-speed pump income power component in sprue (21) through inhalant canal (211), power component at least part is located spray arm's below.

11. The cleaning machine of claim 10, wherein: the power assembly comprises a flow guide support (61), an impeller (62) and a motor (63), the flow guide support (61) is fixedly connected with the bottom wall of the washing cavity (5 a), the upper part of the flow guide support (61) is positioned in the water inlet channel (211) and is relatively and fixedly connected with the connecting ring (11), and a channel (611) for circularly conveying fluid is arranged in the flow guide support (61); the impeller (62) is partially arranged in the channel (611), the top of the impeller (62) penetrates through the connecting ring (11) and is positioned above the connecting ring (11), and the lower part of the impeller is connected with an output shaft of the motor (63); the lower end face of the main spray arm water inlet channel (211) is rotatably arranged on the diversion bracket (61).