CN210643948U - Spray arm of cleaning machine - Google Patents

Abstract

The utility model relates to a spray arm of cleaning machine, including having the spray arm body that catchments the chamber, its characterized in that: the spray arm body is in a vertically extending cylindrical shape, a water inlet is formed in the bottom of the spray arm body, a plurality of nozzles communicated with the water collecting cavity are arranged on the peripheral wall of the spray arm body at intervals, and the inner diameter of a water inlet end of each nozzle is larger than that of a water outlet end of each nozzle. The utility model discloses a spray arm body is the cylindric of vertical extension and opens in the bottom has the water inlet, interval arrangement has a plurality of and the nozzle that the chamber is linked together that catchments on the periphery wall of spray arm body, and the end internal diameter of intaking of this nozzle is greater than out water end internal diameter, the spray direction of play water has thoroughly been changed to the mode that sets up of this nozzle, make rivers can also spray certain height to spraying all around, the water spray coverage is big, partial tableware has been avoided washing incomplete problem, the cleaning performance is improved.

Description

Spray arm of cleaning machine

Technical Field

The utility model relates to a spray arm of 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 dish-washing machines on the market are generally divided into a table type dish-washing machine, a cabinet type dish-washing machine and a trough type dish-washing machine, wherein the table type dish-washing machine is an integral independent structure and is generally placed on a table top for use; the cabinet type dish washing machine is also an independent structure, but needs to be embedded into a kitchen cabinet for use; the sink dishwasher is combined with a sink and is generally installed in a kitchen cabinet for use.

At present, the structure of a relatively mature water tank type cleaning machine in the market is mainly described in chinese patent "water tank type cleaning machine" (application number: CN201310750968.1) with publication number CN104224074B, that is, the water tank type cleaning machine comprises a tank body forming a washing space, the tank body comprises a water tank body and a cover plate rotatably connected to the water tank body, a concave draining area is arranged at least at the central part of the bottom of the water tank body, a water pump for pumping water in the draining area to the washing space above the draining area is arranged in the draining area, the draining area is covered with a draining plate with draining holes, and a rotary spray arm which is communicated with the water pump and has water outlet holes is arranged above the draining plate. By arranging the draining area covered with the draining plate and arranging the water pump in the draining area, the water pump is isolated from the washing area, so that the water flowing back to the water pump is filtered by the draining plate.

At present, the cleaning machine mainly adopts a water pump and spray arm structure disclosed in an open water pump and application thereof (application number: CN201410848627.2) of Chinese invention patent with an authorization publication number of CN104564838B, the structure is a top-spraying structure, and the cleaning machine has the advantages that the rising water flow falls back to generate the effect of cleaning twice, but the spray arm of the structure has higher requirement on the placement of tableware, and simultaneously, if the tableware blocks the rising water flow, the problem that the upper tableware is not cleaned completely easily occurs.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, thereby provide one kind can be to spraying water diffusion water spray scope all around and then improve the cleaning machine's of cleaning performance spray arm.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a spray arm of cleaning machine, is including the spray arm body that has the chamber that catchments, its characterized in that: the spray arm body is in a vertically extending cylindrical shape, a water inlet is formed in the bottom of the spray arm body, a plurality of nozzles communicated with the water collecting cavity are arranged on the peripheral wall of the spray arm body at intervals, and the inner diameter of a water inlet end of each nozzle is larger than that of a water outlet end of each nozzle.

Preferably, the nozzles are arranged in rows in the circumferential direction of the spray arm body, each row has at least two nozzles vertically arranged at intervals, and two adjacent rows of nozzles are arranged in a staggered manner. With such a structure, the spray range and spray uniformity are enlarged.

Preferably, in at least one row of the nozzles, the nozzles positioned at the upper part of the spray arm body are gradually inclined upwards from the water inlet end to the water outlet end, and the nozzles positioned at the lower part of the spray arm body are gradually inclined downwards from the water inlet end to the water outlet end. With such a structure, the ejection range and the ejection uniformity are further expanded.

Preferably, the nozzle is gradually tilted outwards from the water inlet end to the water outlet end. By adopting the structure, when the spray arm body rotates, the rotating direction is opposite to the tilting direction of the nozzle, so that the water outlet resistance is reduced, inertia is provided for water outlet through the flow channel of the nozzle so as to maintain higher water outlet speed, and the cleaning effect is improved.

Preferably, the upper end surface of the spray arm body is formed as a tapered surface gradually inclined downward from outside to inside in the radial direction. The structure can avoid cavitation caused by vortex formed by water drawn by rotation of the impeller, improve the water outlet speed and further improve the cleaning effect.

Preferably, a diversion trench extending inwards from the water inlet port of the nozzle is formed on the inner wall surface of the spray arm body, and a diversion cover capable of semi-surrounding the diversion trench is arranged at a position close to the nozzle in the diversion trench. In the rotation process of the spray arm body, water in the water collecting cavity is blocked by the flow guide cover to be favorable for rapidly rushing into the flow guide groove and entering the nozzle, and the structure is favorable for improving the water outlet speed and further improving the cleaning effect.

Preferably, the nozzle is formed with a flow guide passage having an inner diameter gradually decreasing in a water flow direction at least in the vicinity of the water inlet port. The structure is convenient for water inflow.

In each of the above schemes, the spray arm further includes an assembly ring, and the lower end of the spray arm body is rotatably disposed on the assembly ring. The assembly ring is arranged, so that the spray arm body can be rotatably connected to the flow guide seat, and the assembly ring is convenient to detach and install.

Preferably, the upper end face of the assembling ring is rotatably connected with the lower end face of the spray arm body through a revolute pair. The revolute pair can be a rolling bearing type revolute pair, friction is reduced, the water energy utilization rate is improved, and the cleaning effect is improved.

Compared with the prior art, the utility model has the advantages of: the utility model discloses a spray arm body is the cylindric of vertical extension and opens in the bottom has the water inlet, interval arrangement has a plurality of and the nozzle that the chamber is linked together that catchments on the periphery wall of spray arm body, and the end internal diameter of intaking of this nozzle is greater than out water end internal diameter, the spray direction of play water has thoroughly been changed to the mode that sets up of this nozzle, make rivers can also spray certain height to spraying all around, the water spray coverage is big, partial tableware has been avoided washing incomplete problem, the cleaning performance is improved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

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

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is a schematic view of the structure of FIG. 1 in use;

fig. 5 is a schematic structural view of the impeller of fig. 4.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 3, the spray arm of the cleaning machine of the present embodiment includes a spray arm body 1 having a water collecting cavity 10, the spray arm body 1 is cylindrical and extends vertically, the inside of the spray arm body 1 is hollow to form the water collecting cavity 10, the top of the spray arm body 1 is sealed and arranged, the bottom of the spray arm body 1 is provided with a water inlet 11, a plurality of nozzles 12 communicated with the water collecting cavity 10 are arranged on the peripheral wall of the spray arm body 1 at intervals, and the inner diameter of the water inlet end of each nozzle 12 is greater than the inner diameter of the water outlet end.

In the present embodiment, the nozzles 12 are arranged in vertical rows in the circumferential direction of the spray arm body 1, each row has at least two nozzles 12 arranged vertically at intervals, and two adjacent rows of nozzles 12 are arranged in a staggered manner. There are 2 nozzles 12 in one vertical row of this embodiment and 3 nozzles 12 in the vertical row adjacent to the vertical row. In the vertical row with three nozzles 12, the nozzles 12 positioned at the upper part of the spray arm body 1 are gradually inclined upwards from the water inlet end to the water outlet end, the axial lines of the nozzles 12 positioned at the middle part of the spray arm body 1 are arranged vertical to the axial line of the spray arm body 1, and the nozzles 12 positioned at the lower part of the spray arm body 1 are gradually inclined downwards from the water inlet end to the water outlet end. With such a structure, the spray range and spray uniformity are enlarged. The nozzle 12 gradually tilts outwards from the water inlet end to the water outlet end, when the spray arm body 1 rotates, the rotating direction is opposite to the tilting direction of the nozzle 12 so as to reduce the water outlet resistance, inertia is provided for water outlet through the flow channel of the nozzle 12 so as to maintain higher water outlet speed, and the cleaning effect is improved.

The upper end surface of the shower arm body 1 of the present embodiment is formed as a tapered surface 13 that is gradually inclined downward from outside to inside in the radial direction. The structure can avoid cavitation caused by vortex formed by water drawn by rotation of the impeller in the water collecting cavity 10, improve the water outlet speed and further improve the cleaning effect.

A diversion trench 14 extending inward from the water inlet port of the nozzle 12 is formed on the inner wall surface of the spray arm body 1 of the embodiment, and a diversion cover 15 capable of semi-surrounding the diversion trench 14 is arranged at a position close to the nozzle 12 in the diversion trench 14. In the rotation process of the spray arm body 1, water in the water collecting cavity 10 is blocked by the diversion cover 15 and is favorable for rapidly rushing into the diversion trench 14 and entering the nozzle 12, and the structure is favorable for improving the water outlet speed and further improving the cleaning effect. The nozzle 12 is formed with a guide passage 121 having an inner diameter gradually decreasing in a water flow direction at least in the vicinity of the water inlet port, and this structure facilitates water inlet.

In the embodiment, the spray arm further comprises a mounting ring 2, and the lower end of the spray arm body 1 is rotatably arranged on the mounting ring 2. The arrangement of the assembly ring 2 is convenient for connecting the spray arm body 1 on the flow guide seat of the cleaning machine in a rotatable manner, and is convenient to detach and install. The upper end face of the assembly ring 2 of the embodiment is rotatably connected with the lower end face of the spray arm body 1 through a rotating pair 3. The revolute pair can be a rolling bearing type revolute pair, friction is reduced, the water energy utilization rate is improved, and the cleaning effect is improved.

When the spray arm in this embodiment is used, it is necessary to use the spray arm in cooperation with the water drawing impeller 4, as shown in fig. 4 and 5, the impeller 4 includes a shaft 41 located at the center and a plurality of blades 42 which are uniformly distributed on the outer circumferential wall of the shaft 41 along the circumferential direction and extend along the axial direction, each blade 42 has a first portion 421 located at the upper portion and capable of dispersing the fluid along the radial direction and a second portion 422 located at the lower portion and capable of drawing the fluid along the axial direction, each blade 42 further includes four third portions 423 arranged at intervals along the circumferential direction of the shaft 41 and capable of dispersing the fluid along the radial direction, the third portions 423 are disposed on the second portions 422, the lower edges of the third portions 423 are connected to the upper surfaces of the second portions 422, and the upper edges of the third portions 423 extend radially outward from the outer circumferential wall of the shaft. The third portion 423 is disposed near the water inlet 11 of the spray arm body 1 and above the water inlet 11, and the lower end of the impeller 4 is connected with a driving member, which can be a motor, capable of driving the impeller 4 to rotate.

The spray direction of the water outlet is thoroughly changed by the arrangement mode of the spray nozzles 12 of the spray arm in the embodiment, so that the water flow can be sprayed to the periphery and can also be sprayed to a certain height, the water spraying coverage is large, the problem that part of tableware is not thoroughly washed is avoided, and the cleaning effect is improved.

Claims (9)

1. A spray arm of cleaning machine, including spray arm body (1) that has water collecting cavity (10), its characterized in that: the spray arm is characterized in that the spray arm body (1) is vertically extended and cylindrical, a water inlet (11) is formed in the bottom of the spray arm body, a plurality of nozzles (12) communicated with the water collecting cavity (10) are arranged on the peripheral wall of the spray arm body (1) at intervals, and the inner diameter of a water inlet end of each nozzle (12) is larger than that of a water outlet end.

2. The spray arm of a cleaning machine of claim 1, wherein: the spray nozzles (12) are arranged in rows in the circumferential direction of the spray arm body (1), each row is provided with at least two spray nozzles (12) which are vertically arranged at intervals, and the adjacent two rows of spray nozzles (12) are arranged in a staggered mode.

3. The spray arm of a cleaning machine of claim 2, wherein: in at least one row of the nozzles (12), the nozzles (12) positioned at the upper part of the spray arm body (1) are gradually inclined upwards from the water inlet end to the water outlet end, and the nozzles (12) positioned at the lower part of the spray arm body (1) are gradually inclined downwards from the water inlet end to the water outlet end.

4. The spray arm of a cleaning machine of claim 1, wherein: the nozzle (12) is gradually tilted outwards from the water inlet end to the water outlet end.

5. The spray arm of a cleaning machine according to any one of claims 1 to 4, characterized in that: the upper end surface of the spray arm body (1) is formed into a conical surface (13) which is gradually inclined downwards from outside to inside along the radial direction.

6. The spray arm of a cleaning machine according to any one of claims 1 to 4, characterized in that: a diversion trench (14) extending inwards from a water inlet port of the nozzle (12) is formed on the inner wall surface of the spray arm body (1), and a diversion cover (15) capable of semi-surrounding the diversion trench (14) is arranged at the position, close to the nozzle (12), of the diversion trench (14).

7. The spray arm of a cleaning machine according to any one of claims 1 to 4, characterized in that: the nozzle (12) is provided with a flow guide passage (121) having an inner diameter gradually decreasing in the water flow direction at least in the vicinity of the water inlet port.

8. The spray arm of a cleaning machine according to any one of claims 1 to 4, characterized in that: the spray arm is characterized by further comprising an assembly ring (2), wherein the lower end of the spray arm body (1) can be rotatably arranged on the assembly ring (2).

9. The spray arm of a cleaning machine of claim 8, wherein: the upper end face of the assembling ring (2) is rotatably connected with the lower end face of the spray arm body (1) through a revolute pair (3).

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