CN211796308U - Spray arm and cleaning machine with same - Google Patents

Abstract

The utility model relates to a spray arm and use cleaning machine that has this spray arm, including having the spray arm body that catchments the chamber, its characterized in that: the spraying arm body is disc-shaped, a water inlet is formed in the bottom of the spraying arm body, a plurality of nozzles communicated with the water collecting cavity are arranged on the upper wall surface of the spraying arm body at intervals, and the axial lead of each nozzle is perpendicular to the surface tangent line of the disc-shaped body at the position of the nozzle. The utility model discloses a spray arm body shaping is discoid, and discoid structure makes the spray arm whole upwards the atress even, and the axial lead of nozzle is mutually perpendicular with the surface tangent line of the discoid body of its position department, has then guaranteed that the water yield of nozzle spout water column is even to need not to set up the speed reduction hole, keep the big injection force of nozzle, improve the cleaning performance.

Description

Spray arm and cleaning machine with same

Technical Field

The utility model relates to a spray arm and applied cleaning machine that has this spray arm.

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 uses a water pump and a spray arm structure disclosed in the Chinese patent of invention with the publication number of CN104564838B, namely an open water pump and application thereof (application number: CN201410848627.2), 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 radial stress of the structure is not uniform in the using process, the blocking phenomenon of the spray arm is easy to cause, and the rotating speed of the spray arm is fast and non-uniform due to the strong viscous force of the generated fluid because the rotating speed of an impeller is fast, and the rotating speed of the spray arm is driven to rotate, and a speed reducing hole needs to be arranged on the spray arm to reduce the speed, so that the rotating speed of the spray arm is controlled at 40-50 revolutions per minute, but the whole cleaning effect is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the first technical problem that will solve is to prior art's current situation, thereby provides the water yield that the atress is even, spout the water column in the footpath and even and the jet power improves cleaning performance's spray arm greatly.

The utility model discloses the second technical problem that will solve is to prior art's current situation, provides an use the cleaning machine that has above-mentioned spray arm, and this cleaning machine can effectively improve the cleaning performance.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a spray arm, includes the spray arm body that has the chamber that catchments, its characterized in that: the spraying arm body is disc-shaped, a water inlet is formed in the bottom of the spraying arm body, a plurality of nozzles communicated with the water collecting cavity are arranged on the upper wall surface of the spraying arm body at intervals, and the axial lead of each nozzle is perpendicular to the surface tangent line of the disc-shaped body at the position of the nozzle.

Along the water flow direction, the inner diameter of the upstream part of the nozzle is gradually reduced, the inner diameter of the downstream part of the nozzle is gradually increased, and a midstream part with constant inner diameter is connected between the upstream part and the downstream part. By adopting the structure, the upstream part is a pressure reducing and speed increasing end, and the downstream part is a pressure increasing section, so that the flow speed and the impact force of the water jet column can be effectively improved, and the cleaning effect is improved.

As an improvement, the side part of the nozzle is provided with an air adding hole communicated with the midstream part. The midstream part with the constant inner diameter can form a negative pressure area, an air adding hole is arranged at the negative pressure area, the outside air can be adsorbed into the nozzle and is sprayed out after being mixed with water flow, bubbles mixed in the water flow are broken on the surface of a cleaned object, the stripping degree of dirt can be increased, and the cleaning effect is improved.

Preferably, the upper wall of the spray arm body is formed into an arc structure which is arched upwards, and the lower wall of the spray arm body is formed into a hollow truncated cone-shaped structure with a large upper end and a small lower end. The structure of lower wall can carry out ascending guide effect to rivers, and the structure and the nozzle cooperation of upper wall make rivers spout power evenly distributed on the circumferencial direction to improve the water yield homogeneity that spray arm body pivoted and spout the water column, improve the cleaning performance.

The utility model provides an use cleaning machine that has above-mentioned spray arm, includes basin body and pump water mechanism, the diapire of basin body has the recessed waterlogging caused by excessive rainfall district of local, its characterized in that: the spray arm body is supported above the draining area through the diversion seat, and the water pumping mechanism is used for pumping water in the draining area into the spray arm body.

In the above scheme, the water pumping mechanism comprises an impeller assembly and a motor, the impeller assembly is arranged below the spray arm body, the upper part of the impeller assembly is a centrifugal impeller extending into the water inlet, the lower part of the impeller assembly is an axial flow impeller located in the flow guide seat, the motor is arranged on the outer bottom wall of the water tank body, and the output shaft penetrates through the water tank body to be connected with the impeller assembly.

In order to facilitate connection and assembly, the lower part of the flow guide seat is provided with support arms supported on the bottom wall of the water tank body, a water inlet flow channel is formed between the adjacent support arms, and the spray arm body can be rotatably arranged at the top of the flow guide seat. The top of water conservancy diversion seat is provided with the guide way of arranging along circumference, the water inlet edge of spraying arm body is provided with downwardly extending's annular connecting portion, and the lower extreme of this connecting portion is provided with the buckle that can block with rotating and put in the guide way.

Compared with the prior art, the utility model has the advantages of: the utility model discloses a spray arm body shaping is discoid, and discoid structure makes the spray arm whole upwards the atress even, and the axial lead of nozzle is mutually perpendicular with the surface tangent line of the discoid body of its position department, has then guaranteed that the water yield of nozzle spout water column is even to need not to set up the speed reduction hole, keep the big injection force of nozzle, improve the cleaning performance.

Drawings

Fig. 1 is a schematic structural view of a spray arm body according to 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 sectional view of the spray arm body in the embodiment of the present invention;

fig. 4 is a sectional view of the cleaning machine according to the embodiment of the present invention.

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 present embodiment includes a spray arm body 1 having a water collecting cavity 10, the spray arm body 1 is disc-shaped and has a water inlet 11 at the bottom, a plurality of nozzles 12 communicated with the water collecting cavity 10 are arranged on the upper wall surface of the spray arm body 1 at intervals, and the axial line of the nozzles 12 is perpendicular to the surface tangent line of the disc-shaped body 1 at the position where the nozzles are located.

As shown in fig. 3, in the water flow direction, the inner diameter of the upstream portion 121 of the nozzle 12 gradually decreases, the inner diameter of the downstream portion 122 gradually increases, the central angle of the upstream portion 121 is 25 °, the central angle of the downstream portion 122 is 7 °, and a midstream portion 123 having a constant inner diameter is connected between the upstream portion 121 and the downstream portion 122. The upstream part 121 is a pressure reducing and speed increasing end, and the downstream part 122 is a pressure increasing section, so that the flow speed and the impact force of the sprayed water column can be effectively improved, and the cleaning effect is improved. The nozzle 12 is provided with a gas filling hole 124 at a side portion thereof communicating with the midstream portion 123. The midstream part 123 with constant inner diameter forms a negative pressure area, an air adding hole 124 is arranged at the negative pressure area, the outside air can be adsorbed in the nozzle 12 and can be mixed with water flow to be sprayed out, bubbles mixed in the water flow are broken on the surface of the cleaned object, the stripping degree of dirt can be increased, and the cleaning effect is improved.

The upper wall of the spray arm body 1 of the present embodiment is formed into an upwardly arched arc-shaped structure 1a, and the lower wall of the spray arm body 1 is formed into a hollow circular truncated cone-shaped structure 1b having a large upper end and a small lower end. The spray arm 12 is provided in plurality, wherein one spray nozzle 12 is located at the center of the arc-shaped structure 1a, and the other spray arms 12 are distributed on the arc-shaped structure 1a in a central symmetry manner around the spray nozzle 12. The structure of lower wall can carry out ascending guide effect to rivers, and the structure of upper wall and the cooperation of nozzle 12 make rivers spout power evenly distributed on the circumferencial direction to improve the water yield homogeneity that sprays arm body 1 pivoted and spout the water column, improve the cleaning performance.

As shown in fig. 4, the cleaning machine with the spray arm in this embodiment includes a water tank body 2 and a water pumping mechanism 3, the bottom wall of the water tank body 2 has a draining area 21 that is locally concave, the spray arm body 1 is supported above the draining area 21 through a diversion seat 4, and the water pumping mechanism 3 is used for pumping water in the draining area 21 into the spray arm body 1.

The water pumping mechanism 3 comprises an impeller assembly 31 and a motor 32, the impeller assembly 31 is arranged below the spray arm body 1, the upper part of the impeller assembly is a centrifugal impeller 311 extending into the water inlet 11, the lower part of the impeller assembly is an axial-flow impeller 312 positioned in the flow guide seat 4, the motor 32 is arranged on the outer bottom wall of the water tank body 2, and an output shaft 321 penetrates through the water tank body 2 to be connected with the impeller assembly 31. In order to facilitate connection and assembly, the lower part of the flow guide seat 4 is provided with support arms 41 supported on the bottom wall of the water tank body 2, a water inlet flow channel is formed between the adjacent support arms 41, and the spray arm body 1 can be rotatably arranged at the top of the flow guide seat 4. The top of the guide seat 4 is provided with a guide groove 43 arranged along the circumferential direction, the edge of the water inlet 11 of the spray arm body 1 is provided with an annular connecting portion 13 extending downwards, the lower end of the connecting portion 13 is provided with a buckle 131 capable of being rotatably clamped in the guide groove 43, the specific assembling structure is the same as the assembling mode of the spray arm in the previous application of the applicant, and details are not repeated here.

The spray arm body 1 of this embodiment takes the shape of a circular disk, and discoid structure makes the whole radial atress of spray arm even, and the axial lead of nozzle is mutually perpendicular with the surface tangent line of the discoid body of its position department, has then guaranteed that the water yield that the nozzle spouts the water column is even to need not to set up the speed reduction hole, keep the big jet power of nozzle, improve the cleaning performance.

Claims (8)

1. A spray arm comprising a spray arm body (1) having a water collection cavity (10), characterized in that: the spray arm body (1) is disc-shaped, 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 upper wall surface of the spray arm body (1) at intervals, and the axial lead of each nozzle (12) is perpendicular to the surface tangent line of the disc-shaped body (1) at the position where the nozzle is located.

2. The spray arm of claim 1, wherein: in the water flow direction, the inner diameter of an upstream part (121) of the nozzle (12) is gradually reduced, the inner diameter of a downstream part (122) is gradually increased, and a midstream part (123) with constant inner diameter is connected between the upstream part (121) and the downstream part (122).

3. The spray arm of claim 2, wherein: the side part of the nozzle (12) is provided with an air adding hole (124) communicated with the midstream part (123).

4. The spray arm of claim 1, 2 or 3, wherein: the upper wall of the spray arm body (1) is formed into an arc-shaped structure (1a) which is arched upwards, and the lower wall of the spray arm body (1) is formed into a hollow circular truncated cone-shaped structure (1b) with a large upper end and a small lower end.

5. A cleaning machine with a spray arm as claimed in any one of claims 1 to 4, comprising a water tank body (2) and a water pumping mechanism (3), wherein the bottom wall of the water tank body (2) is provided with a locally concave draining area (21), and the cleaning machine is characterized in that: the spray arm body (1) is supported above the draining area (21) through the flow guide seat (4), and the water pumping mechanism (3) is used for pumping water in the draining area (21) into the spray arm body (1).

6. The cleaning machine of claim 5, wherein: the water pumping mechanism (3) comprises an impeller assembly (31) and a motor (32), the impeller assembly (31) is arranged below the spray arm body (1), the upper portion of the impeller assembly is a centrifugal impeller (311) extending into the water inlet (11), the lower portion of the impeller assembly is an axial-flow impeller (312) located in the flow guide seat (4), the motor (32) is arranged on the outer bottom wall of the water tank body (2), and an output shaft penetrates through the water tank body (2) to be connected with the impeller assembly (31).

7. The cleaning machine of claim 5, wherein: the lower part of the flow guide seat (4) is provided with support arms (41) supported on the bottom wall of the water tank body (2), a water inlet flow channel is formed between the adjacent support arms (41), and the spray arm body (1) can be rotatably arranged at the top of the flow guide seat (4).

8. The cleaning machine of claim 7, wherein: the top of the flow guide seat (4) is provided with a guide groove (43) arranged along the circumferential direction, the edge of the water inlet (11) of the spray arm body (1) is provided with an annular connecting part (13) extending downwards, and the lower end of the connecting part (13) is provided with a buckle (131) which can be rotatably clamped in the guide groove (43).

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