CN220293570U

CN220293570U - For cleaning of machines spray arm and cleaning machine

Info

Publication number: CN220293570U
Application number: CN202321136514.0U
Authority: CN
Inventors: 韩健健; 郑峰; 刁硕; 魏本柱; 施郑赞
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2023-05-09
Filing date: 2023-05-09
Publication date: 2024-01-05
Anticipated expiration: 2033-05-09

Abstract

The utility model relates to a spray arm for a cleaning machine and the cleaning machine, wherein the spray arm is provided with a flow passage with a hollow interior, the spray arm is provided with a water spray hole and a water outlet which are communicated with the flow channel, the water outlet is rotationally connected with a nozzle, the end part of the flow channel forms an arc-shaped flow guiding side wall, the water outlet is enclosed in a semi-enclosed area enclosed by the flow guiding side wall, the flow passage is locally contracted at the upstream position close to the water outlet to form a flow gathering section arranged towards the water outlet. The utility model arranges the end wall of the flow channel into an arc-shaped flow guiding side wall, the flow guiding side wall forms a semi-surrounding area surrounding the water outlet, the incoming water in the flow channel is pressurized by the flow gathering section and then rushed into the semi-surrounding area, and the water flow which is spirally lifted corresponding to the water outlet is formed by rotating under the guidance of the circular arc-shaped diversion side wall, so that the water flow and the flow velocity are increased, the nozzle is rapidly driven to rotate, and the cleaning effect is improved.

Description

For cleaning of machines spray arm and cleaning machine

Technical Field

The utility model relates to the technical field of dish washing machines, in particular to a spray arm for a cleaning machine for cleaning tableware and fruits and vegetables and the cleaning machine.

Background

A dishwasher is generally provided with a shower arm for washing tableware or fruits and vegetables by spraying a water column.

The Chinese patent No. CN204445748U discloses a dishwasher sprayer and a dishwasher (application No. CN 201520047405.0), wherein the sprayer comprises a water storage cavity, a spraying surface and a mounting surface, a plurality of spraying holes communicated with the water storage cavity are formed in the spraying surface, a water inlet is formed in the mounting surface, a spray head is arranged on the spraying surface, at least two spray head spraying holes are formed in the spray head, a water channel communicated with the water storage cavity is formed in the spray head, and the spray head spraying holes are communicated with the water channel. When the sprayer rotates to spray, the spray heads on the sprayer spray simultaneously, and as the spray heads are provided with at least two spray head spray holes, the effective spray area is increased, and the spray dead angle is reduced.

The shower of above-mentioned structure is favorable to reducing and washs the dead angle, but, its shower nozzle is connected with the shower runner through rotating the mode of inserting, and the shower sets up at the end of spray arm runner, because the rivers pressure that reaches spray arm runner end department loses to some extent, leads to rivers probably be difficult to drive the shower and rotates after getting into the shower, perhaps need pass through long time and just can realize the pivoted drive to the shower, influences cleaning performance.

Disclosure of Invention

The first technical problem to be solved by the utility model is to provide a spray arm for a cleaning machine, which can rapidly drive independent nozzles on the spray arm to rotate so as to improve the cleaning effect.

The second technical problem to be solved by the utility model is to provide a cleaning machine with the spray arm aiming at the current state of the art.

The utility model solves at least one of the technical problems by adopting the following technical proposal:

a spray arm for a cleaning machine is provided with a hollow flow passage, a water spraying hole and a water outlet are formed in the spray arm, the water spraying hole and the water outlet are communicated with the flow passage, a nozzle is rotationally connected to the water outlet, an arc-shaped diversion side wall is formed at the end part of the flow passage, the water outlet is enclosed in a semi-enclosed area enclosed by the diversion side wall, and a flow gathering section arranged towards the water outlet is formed by locally shrinking the flow passage at the upstream part close to the water outlet.

Preferably, the water outlet is offset relative to the centre line of the flow gathering section.

Preferably, the partial offset of the water outlet is outside the first inner side wall of the converging flow section.

Preferably, the width of the water outlet offset outside the first inner side wall of the flow gathering section is 0.2-0.8 times of the diameter of the water outlet. The structure can balance the rotating speed of the nozzle well, so that the nozzle can be driven rapidly and the jet effect is not influenced due to too fast rotation.

Preferably, the flow channel is provided with a first side wall and a second side wall which extend along the length direction and are arranged at intervals, the first side wall is recessed inwards of the flow channel at a position close to the water outlet to form a bending section, and the joint of the bending section and the flow guiding side wall forms a throat part of the semi-surrounding area. By adopting the structure, when the water flow in the end part of the flow channel is pressurized, the water flow forms a spiral upward trend when flowing to the water outlet, the energy loss of the water flow is reduced, the flow speed of the water flow is improved, the water flow is more concentrated and smoothly output through the water outlet, the nozzle is rapidly driven to rotate, the stability of the water flow entering the nozzle is improved, and the stability of the rotation of the nozzle is further improved.

Preferably, the bending section comprises a first straight line section and a second straight line section, wherein the first end of the first straight line section is connected with a first side wall of the flow channel, the first straight line section obliquely extends in the flow channel along the water flow direction, the first end of the second straight line section is connected with a second end of the first straight line section, the second end of the second straight line section is connected with a first end of the flow guiding side wall, and the first end of the flow guiding side wall is arranged corresponding to the middle part of the flow channel. The structure can effectively guide and collect water flow and reduce the energy loss of the water flow.

Further preferably, the second straight line segment is arranged parallel to the first sidewall of the flow channel.

Preferably, the second side wall and the diversion side wall of the flow channel are connected through a third straight line segment, and the third straight line segment is gradually and obliquely arranged inwards the flow channel along the water flow direction. The structure can be matched with the bending section to better gather incoming water.

Further preferably, the first end of the third straight line segment is arranged corresponding to the joint of the first straight line segment and the second straight line segment, and the second end of the third straight line segment is tangentially connected with the second end of the diversion side wall. This configuration is advantageous in reducing fluid energy losses.

Preferably, an inflow opening of a semi-surrounding area is formed between the first end of the third straight line segment and the second straight line segment, the width of the inflow opening is w, and the width of the flow channel is D, wherein D/w=1.05-2. More preferably, D/w=1.4 to 2. By adopting the parameters, the water flow rate and the water flow velocity entering the nozzle can be balanced better, the nozzle can be driven to rotate rapidly, and the rotating stability is good.

Preferably, the diameter of the semi-enclosed region is r, w/r=1 to 1.5. More preferably, w/r=1.2 to 1.5. The structure is favorable for further considering that the nozzle is rapidly driven to rotate and has good rotation stability.

Preferably, the bottom wall of the nozzle is provided with a water inlet and a water inlet sleeve extending downwards along the water inlet, the lower edge of the water inlet sleeve is provided with a limiting part penetrating through the water outlet and being limited by being matched with the inner top wall of the runner, and the limiting part is arranged corresponding to the outlet end of the flow gathering section. The water flow accelerated by the flow gathering section impacts the limiting part, which is beneficial to rapidly driving the nozzle to rotate.

The utility model provides a cleaning machine, includes the box, the bottom half is provided with the backwater region of indent, and the top in this backwater region is covered with the filter, still includes above-mentioned spray arm, and this spray arm can locate rotationally on the filter its through pump water mechanism with backwater region be linked together.

Compared with the prior art, the utility model has the advantages that: according to the utility model, the end wall of the flow channel is provided with the arc-shaped flow guide side wall, the flow guide side wall forms a semi-surrounding area surrounding the water outlet, the incoming water in the flow channel is flushed into the semi-surrounding area and is guided by the arc-shaped flow guide side wall to rotate so as to form water flow which is spirally increased corresponding to the water outlet, thereby being beneficial to increasing the water outlet flow and the water flow velocity and rapidly driving the nozzle to rotate, and further improving the cleaning effect.

Drawings

FIG. 1 is a schematic view of a spray arm according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the housing of the lower portion of the concealed shower arm of FIG. 1;

FIG. 3 is a partial cross-sectional view of a spray arm according to an embodiment of the present utility model;

fig. 4 is a schematic diagram of an end structure of a flow channel according to an embodiment of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 4, the shower arm 1 for a cleaning machine of the present embodiment includes a flow passage 11 having a hollow interior, the flow passage 11 extending in the length direction of the shower arm, and a water inlet communicating with the flow passage 11 is provided at a central portion of a bottom wall of the shower arm 1. The top wall of the spray arm is provided with a plurality of water spraying holes 12 which are communicated with the flow channel 11 and are arranged at intervals, the top wall of the spray arm is also provided with a water outlet 13 which is communicated with the flow channel 11 near two ends respectively, the water outlet 13 is rotationally connected with a nozzle 2, the nozzle 2 is disc-shaped, the top wall of the nozzle 2 is provided with a plurality of spray holes 21 which are inclined along the periphery of the nozzle 2 and are arranged at intervals, the spray arm can drive the nozzle 2 to rotate, and meanwhile, under the viscous force of water flow, the nozzle 2 can rotate relative to the spray arm 1 so as to enlarge the spray range and eliminate the cleaning dead angle.

In this embodiment, the end of the flow channel 11 forms an arc-shaped flow guiding sidewall 111, the water outlet 13 is enclosed in a semi-enclosed area 110 enclosed by the flow guiding sidewall 111, and the flow channel 11 is partially contracted at the upstream position near the water outlet 13 to form a flow gathering section 14 arranged towards the water outlet 13.

The outlet 13 of this embodiment is offset with respect to the centre line of the converging section 14. The partial offset of the water outlet 13 is outside the first inner side wall 140 of the converging section 14. The width d of the water outlet 13 which is offset outside the first inner side wall 140 of the flow gathering section 14 is 0.2-0.8 times of the diameter 2r of the water outlet 13. The structure can well balance the rotating speed of the nozzle 2, so that the nozzle 2 can be driven rapidly and the jet effect is not influenced due to too rapid rotation.

Specifically, the flow channel 11 has a first side wall 101 and a second side wall 102 extending along a length direction and arranged at intervals, the first side wall 101 is recessed into the flow channel near the water outlet 13 to form a bending section 141, and a junction between the bending section 141 and the flow guiding side wall 111 forms a throat part 112 of the semi-surrounding area 110. By adopting the structure, when the water flow in the end part of the flow channel 11 is pressurized, the water flow forms a spiral upward trend when flowing to the water outlet 13, the energy loss of the water flow is reduced, the flow speed of the water flow is improved, the water flow is more concentrated and smoothly output through the water outlet 13, the nozzle 2 is rapidly driven to rotate, the stability of the water flow entering the nozzle 2 is improved, and the stability of the rotation of the nozzle 2 is further improved.

The bending section 141 includes a first straight line section 1411 and a second straight line section 1412, wherein a first end of the first straight line section 1411 is connected with the first side wall 101 of the flow channel 11, the first straight line section 1412 extends obliquely inwards along the water flow direction, a first end of the second straight line section 1412 is connected with a second end of the first straight line section 1411, a second end of the second straight line section 1412 is connected with a first end of the flow guiding side wall 111, and the first end of the flow guiding side wall 111 is arranged corresponding to the middle part of the flow channel 11. The structure can effectively guide and collect water flow and reduce the energy loss of the water flow. The second straight line segment 1412 is arranged parallel to the first and second side walls 101 and 102 of the flow channel 11. The second side wall 102 of the flow channel 11 is connected with the flow guiding side wall 111 through a third straight line segment 1413, and the third straight line segment 1413 is gradually inclined towards the inside of the flow channel 11 along the water flow direction. The structure can be matched with the bending section 141 to better gather the incoming water.

The first end of the third straight line segment 1413 is disposed corresponding to the junction of the first straight line segment 1411 and the second straight line segment 1412, and the second end of the third straight line segment 1413 is tangentially connected to the second end of the flow guiding sidewall 111. This configuration is advantageous in reducing fluid energy losses.

An inflow port 1100 of the semi-enclosed region 110 is formed between the first end of the third straight line segment 1413 and the second straight line segment 1412, the width of the inflow port 1100 is w, the width of the flow channel 11 is D, D/w=1.05-2, and preferably D/w=1.4-2. The diameter of the semi-enclosed region 110 is r, w/r=1 to 1.5, and preferably w/r=1.2 to 1.5. By adopting the parameters, the water flow rate and the water flow velocity entering the nozzle 2 can be balanced better, so that the nozzle 2 is driven to rotate rapidly and has good rotation stability.

The bottom wall of the nozzle 2 is provided with a water inlet 22 and a water inlet sleeve 23 extending downwards along the water inlet 22, the lower edge of the water inlet sleeve 23 is provided with a limiting part 231 penetrating through the water outlet 13 and being matched and limited with the inner top wall of the runner 11, and the limiting part 231 is arranged corresponding to the outlet end of the flow gathering section 14. The limiting portion 231 is a clip. The water flow accelerated by the flow gathering section 14 impacts the limit 231, facilitating rapid rotation of the nozzle 2.

The cleaning machine of this embodiment includes the box, and the bottom half is provided with the backwater region of indent, and the top in this backwater region is covered with the filter, still includes above-mentioned spray arm, and this spray arm is located on the filter rotationally and is linked together with the backwater region through pump mechanism.

In this embodiment, the end wall of the flow channel 11 is provided with an arc-shaped flow guiding side wall 111, the flow guiding side wall 111 forms a semi-surrounding area 110 surrounding the water outlet 13, the incoming water in the flow channel 11 is pressurized by the flow collecting section 14 and then rushes into the semi-surrounding area 110, and the incoming water is guided by the arc-shaped flow guiding side wall 111 to rotate to form water flow corresponding to the spiral rising of the water outlet 13, which is beneficial to increasing the water outlet flow and flow velocity, and rapidly drives the nozzle 2 to rotate, thereby improving the cleaning effect.

In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

Claims

1. A spray arm for cleaning machine has inside hollow runner (11), open on the spray arm have delivery port (13) that are linked together with runner (11), delivery port (13) department rotates and is connected with nozzle (2), its characterized in that: the end of the flow channel (11) forms an arc-shaped flow guiding side wall (111), and the water outlet (13) is enclosed in a semi-enclosed area (110) enclosed by the flow guiding side wall (111).

2. The spray arm for a cleaning machine of claim 1, wherein: the flow channel (11) is locally contracted at the upstream part near the water outlet (13) to form a flow gathering section (14) arranged towards the water outlet (13).

3. The spray arm for a cleaning machine of claim 2, wherein: the water outlet (13) is offset relative to the centre line of the converging section (14).

4. A spray arm for a cleaning machine as recited in claim 3, wherein: the partial offset of the water outlet (13) is outside the first inner side wall (140) of the flow gathering section (14).

5. The spray arm for a cleaning machine of claim 4, wherein: the width (d) of the water outlet which is offset outside the first inner side wall (140) of the flow gathering section (14) is 0.2-0.8 times of the diameter of the water outlet (13).

6. The spray arm for a cleaning machine of claim 2, wherein: the flow channel (11) is provided with a first side wall (101) and a second side wall (102) which extend along the length direction and are arranged at intervals, the first side wall (101) is recessed into the flow channel (11) at a position close to the water outlet (13) to form a bending section (141), and the joint of the bending section (141) and the flow guiding side wall (111) forms a throat part (112) of the semi-surrounding area (110).

7. The spray arm for a cleaning machine of claim 6, wherein: the bending section (141) comprises a first straight line section (1411) and a second straight line section (1412), wherein the first end of the first straight line section (1411) is connected with the first side wall (101) of the flow channel (11), the first straight line section (1411) obliquely extends in the flow channel (11) along the water flow direction, the first end of the second straight line section (1412) is connected with the second end of the first straight line section (1411), the second end of the second straight line section (1412) is connected with the first end of the flow guiding side wall (111), and the first end of the flow guiding side wall (111) is arranged corresponding to the middle part of the flow channel (11).

8. The spray arm for a cleaning machine of claim 7, wherein: the second straight line segment (1412) is arranged parallel to the first side wall (101) of the flow channel (11).

9. The spray arm for a cleaning machine of claim 7, wherein: the second side wall (102) and the diversion side wall (111) of the flow channel (11) are connected through a third straight line section (1413), and the third straight line section (1413) is gradually inclined towards the inside of the flow channel (11) along the water flow direction.

10. The spray arm for a cleaning machine of claim 9, wherein: the first end of the third straight line segment (1413) is arranged corresponding to the joint of the first straight line segment (1411) and the second straight line segment (1412), and the second end of the third straight line segment (1413) is tangentially connected with the second end of the flow guiding side wall (111).

11. The spray arm for a cleaning machine of claim 9, wherein: an inflow opening (1100) of a semi-surrounding area (110) is formed between the first end of the third straight line segment (1413) and the second straight line segment (1412), the width of the inflow opening (1100) is w, and the width of the flow channel (11) is D, wherein D/w=1.05-2.

12. The spray arm for a cleaning machine of claim 11, wherein: d/w=1.4 to 2.

13. The spray arm for a cleaning machine of claim 7, wherein: the semi-enclosed region (110) has a diameter r, w/r=1 to 1.5.

14. The spray arm for a cleaning machine of claim 13, wherein: w/r=1.2 to 1.5.

15. The spray arm for a cleaning machine according to any one of claims 2 to 14, wherein: the water inlet (22) and the water inlet sleeve (23) extending downwards along the water inlet (22) are arranged on the bottom wall of the nozzle (2), a limiting part (231) penetrating through the water outlet (13) and being matched with the inner top wall of the runner (11) to limit is arranged at the lower edge of the water inlet sleeve (23), and the limiting part (231) is arranged corresponding to the outlet end of the flow gathering section (14).

16. The utility model provides a cleaning machine, includes the box, the bottom half is provided with the return water region of indent, and this return water region's top covers has the filter, its characterized in that: further comprising a spray arm according to any one of claims 1 to 15 rotatably disposed above said filter plate in communication with a recirculation zone via a pumping mechanism.