CN219680535U

CN219680535U - Spray arm for cleaning machine and cleaning machine

Info

Publication number: CN219680535U
Application number: CN202223362585.0U
Authority: CN
Inventors: 魏本柱
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-09-15
Anticipated expiration: 2032-12-12

Abstract

The utility model relates to a spray arm for a cleaning machine, which comprises a spray arm main body, wherein the spray arm main body is provided with a plurality of water spray holes, the spray arm main body is also provided with a water outlet, a nozzle capable of rotating relative to the spray arm main body is connected to the water outlet, the nozzle is provided with a spray hole, and the outer side wall of the nozzle is provided with a gas layer capable of surrounding the spray hole to supply gas for the spray hole so as to form a spray water column with bubbles. The spray arm is provided with the spray nozzle which can rotate along with the spray arm and simultaneously rotate relative to the spray arm, so that the cleaning dead angle is eliminated; the bubble-containing water column is formed through the air-entrapping structure, and at the moment of contacting the pollutant, the bubbles entrained in the water flow are broken, so that the stripping force of the pollutant on the surface of the object to be cleaned can be improved, and the cleaning effect is further improved; the nozzle is arranged outside the top plate, so that food residues, sediment and the like are prevented from being mixed in a gap between the top plate and the nozzle, and the rotation stability of the nozzle is improved.

Description

Spray arm for cleaning machine 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. For example, chinese patent publication No. CN204813755U (application No. CN 201520531714.5) and Chinese patent publication No. CN209932651U (application No. CN201920258610. X) disclose corresponding spray arm structures.

For the spray arm with the structure, the water inlet is arranged on one side wall of the spray arm, water is discharged from the water inlet to two sides, the spray arm is driven to rotate by viscous force of water dispersed in the flow channel, and the other side wall of the spray arm is provided with a first water spraying hole for spraying water columns. Because in current dish washer, bowl and dish are fixed the back in bowl frame structure, and the bowl dish is unchangeable on the bowl frame, and the water column that spray arm sprayed is approximately straight line (strip) form, this just leads to spraying the limited scope of water column, can not compromise the surface of all tableware, has the washing dead angle, influences cleaning effect. Meanwhile, a dish washer with a rectangular washing cavity is easy to generate a washing dead angle.

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 sprayer with the structure is favorable for reducing the cleaning dead angle, but the water column sprayed by the nozzle has poor cleaning degree due to partial energy loss.

Disclosure of Invention

Aiming at the current state of the art, the utility model provides a spray arm for a cleaning machine and the cleaning machine, which can effectively eliminate cleaning dead angles and improve the stripping force of a spray water column on pollutants so as to improve the cleaning effect.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a spray arm for cleaning machine, includes the spray arm main part, and the spray arm main part is opened has a plurality of holes for spraying water, the spray arm main part has still been seted up the delivery port, and this delivery port department is connected with can be for spray arm main part pivoted nozzle, the orifice has been seted up to the nozzle, thereby nozzle lateral wall department is provided with can surround orifice wherein for the gas supply is in order to form the gas layer of the jet water column that has the bubble for the orifice.

Preferably, a top cover arranged at intervals is arranged on the outer side wall of the nozzle, an injection hole corresponding to the injection hole is formed in the top cover, and a second gap for air to be sucked into the jet water column in the jet state is formed between the injection hole and the injection hole.

Preferably, the top of the shower arm body is provided with a gas collecting chamber capable of enclosing the water jet therein to supply gas to the water jet to form a jet of water with bubbles.

Preferably, the spray arm body has opposite length and width directions, the nozzle is disposed at an end of the spray arm body, and the gas collection chamber extends from a central portion of the spray arm body to the end and is located inside the nozzle.

Preferably, the water spraying holes and the nozzles are all positioned on the upper surface of the spray arm main body, the upper surface of the spray arm main body is provided with a concave mounting groove, the mounting groove is formed between the end part of the air collecting cavity and the outer end wall of the spray arm main body to form a semi-enclosed structure, the water outlets are arranged corresponding to the bottom of the mounting groove, and the nozzles can be rotatably arranged in the mounting groove.

Preferably, the nozzle is disc-shaped, the end part of the spray arm main body is shaped into an arc-shaped end wall corresponding to the outer edge of the nozzle above the spray arm main body, the end part of the top plate is inwards recessed to form an arc-shaped notch which surrounds the periphery of the nozzle and is matched with the nozzle, and the arc-shaped notch and the top wall of the spray arm main body outside the arc-shaped notch are jointly surrounded to form the mounting groove.

Preferably, the side open portion of the semi-surrounding structure of the mounting groove constitutes an air inlet of the air collecting chamber.

Preferably, a top plate arranged at intervals is arranged on the top wall of the spray arm main body, the air collecting cavity is enclosed between the top plate and the upper surface of the spray arm main body, a jet hole corresponding to the water spraying hole is arranged on the top plate, and a first gap for air to be sucked into the jet water column in a jet state is formed between the jet hole and the water spraying hole.

Preferably, a support rib for supporting the top plate on the shower arm body is provided under the top plate.

Preferably, at least part of the supporting ribs are arc-shaped and extend along the edge of the arc-shaped notch below the top plate, and a gap for gas to enter the gas collecting cavity from the outside is reserved between at least one end of the supporting ribs and the inner wall of the gas collecting cavity.

Preferably, the top edge of the circular arc-shaped end wall is formed with a drainage slope gradually inclining outwards along the radial direction from top to bottom.

Preferably, the upper surface of the top cover gradually slopes downwards from the center to the edge to form a diversion surface.

Preferably, the number of the spray holes is at least two.

Preferably, the nozzles are disc-shaped, and the spray holes are arranged on the upper surface of the nozzle at intervals in a circumferential inclined manner.

Preferably, the bottom of the nozzle is provided with a water inlet and a water inlet sleeve extending downwards around the water inlet, and the water inlet sleeve is rotationally connected with the water outlet through a buckle.

Preferably, the bottom edge of the nozzle is provided with a clamping foot which can penetrate through the water outlet and prop against the top wall of the runner so as to rotationally restrain the nozzle on the spray arm main body.

Preferably, the outer side wall of the clamping foot is shaped into a diversion inclined plane gradually inclining outwards along the radial direction from bottom to top.

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, the spray arm can locate on the filter rotationally and be linked together with the backwater region through pump water mechanism.

Compared with the prior art, the utility model has the advantages that: the spray arm is provided with the spray nozzle which can rotate along with the spray arm and can rotate relative to the spray arm, so that the cleaning dead angle is eliminated; the water column with bubbles is formed through the air-entrapping structure, and at the moment of contacting with pollutants, the bubbles entrained in the water flow are broken, so that the stripping force of the pollutants on the surface of the object to be cleaned can be improved, and the cleaning effect is further improved.

Drawings

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

FIG. 2 is a schematic view of a spray arm according to an embodiment of the present utility model;

FIG. 3 is a schematic view of the bottom structure of FIG. 2;

FIG. 4 is an exploded view of a spray arm and nozzle according to an embodiment of the present utility model;

FIG. 5 is an exploded view of a spray arm in an embodiment of the present utility model;

FIG. 6 is an enlarged view of a portion of FIG. 5;

FIG. 7 is a cross-sectional view of a spray arm according to an embodiment of the present utility model;

FIG. 8 is a schematic view of the bottom structure of a nozzle 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 8, the cleaning machine of this embodiment includes a box 01 and a spray arm 1, the spray arm includes a spray arm body 1, a concave backwater area 011 is provided at the bottom of the box 01, a filter plate 012 is covered at the top of the backwater area 011, a water pump communicated with the backwater area 011 is provided in the backwater area 011, a water outlet of the water pump is arranged upward, and the spray arm can be rotatably provided on the filter plate 012 and is communicated with the water outlet of the water pump.

The spray arm can be rotationally arranged in the box body and is close to the bottom of the box body 01, a runner 11 extending along the length direction is formed in the hollow mode in the spray arm body 1, a water inlet 12 communicated with the runner 11 is formed in the bottom wall of the spray arm body 1, a plurality of water spraying holes 13 communicated with the runner 11 are formed in the top wall of the spray arm body, and a water pumping mechanism for pumping water at the bottom of the box body to the runner 11 through the water inlet 12 is arranged at the bottom of the box body 01, namely the water pump.

The spray arm body 1 is formed by involution of an upper shell and a lower shell, a top plate 3 is covered on the spray arm body 1, an air collecting cavity 30 is enclosed between the top plate 3 and the top wall of the spray arm body 1, the air collecting cavity 30 is communicated with the outside air, a jet hole 31 corresponding to the arrangement of the water spraying hole 13 is arranged on the top plate 3, a first gap 100 for allowing air to be sucked into a jet water column in a jet state is formed between the jet hole 31 and the water spraying hole 13, and the air collecting cavity 30, the jet hole 31 and the first gap 100 jointly form a first air filling structure. According to the venturi effect, when the water column passes through the water spraying hole and the jet hole, negative pressure is generated at the first gap 100 to suck the surrounding air into the water column, so that the water column with bubbles is formed, when the water column with bubbles is hit on the surface of the object to be cleaned, the stripping force to pollutants can be increased at the moment of bubble breaking, and the cleaning effect is improved.

In this embodiment, the top wall of the shower arm body 1 is provided with a water outlet 14 near the end, the nozzle 2 is connected to the water outlet 14, and the nozzle 2 is located outside the top plate 3. The nozzle 2 is arranged outside the top plate 3, so that food residues, sediment and the like are prevented from being mixed in a gap between the nozzle 2 and the top plate to influence the rotation of the nozzle.

Specifically, the nozzle 2 has a disk shape, the end of the shower arm body 1 is formed as an arc-shaped end wall 18 opposite to the outer edge of the nozzle 2 above the end, and the end of the top plate 3 is recessed inward to form an arc-shaped notch 32 surrounding the outer periphery of the nozzle 2 and matching the end. The inner wall of the arc-shaped notch 32 and the arc-shaped end wall 18 of the spray arm body 1 are tangentially connected together to form a mounting groove 20 for semi-surrounding the nozzle 2, and the part of the arc-shaped end wall 18 corresponding to the mounting groove 20 forms an air inlet of the air collecting cavity 30. By adopting the mode, after the spray nozzle 2 is arranged on the spray arm body 1, the spray arm body 1 has better integrity and mainly has the following functions: 1. the rotation of the nozzle 2 is guided in the circumferential direction, so that the rotation stability of the nozzle 2 is improved; 2. the semi-surrounding structure can wash away food residues and sediment by matching with the rotation of the nozzle 2 through the opening part of the mounting groove 20, so that the problem of pollutant accumulation is avoided, and the assembly gap between the edge of the nozzle 2 and the edge of the top plate 3 can be reduced, thereby further improving the rotation stability of the nozzle 2; 3. the side wall of the nozzle 2 can also block the air inlet area of the air collecting cavity 30 to prevent washing water, pollutants and the like from invading into the air collecting cavity 30.

The top plate 3 is supported on the top wall of the spray arm body 1 through the supporting ribs 33, the supporting ribs 33 are arc-shaped and extend along the edge of the arc-shaped notch 32 below the top plate 3, and gaps 331 for allowing gas to enter the gas collecting cavity 30 from the outside are reserved between the two ends of the supporting ribs 33 and the inner walls of the corresponding gas collecting cavities 30. The structure provides support for the top plate 3 on the one hand, and can further restrict the air inlet area on the other hand, so as to prevent wash water, pollutants and the like from invading into the air collecting cavity.

The top edge of the arcuate end wall 18 is formed with a drainage ramp 181 that tapers radially outwardly from top to bottom. This structure facilitates the rapid drainage of the accumulated water at the nozzle 2.

The inside of the nozzle 2 is hollow to form a disc-shaped or cross-shaped cavity-shaped flow passage, the top of the nozzle 2 is provided with at least two spray holes 21, and the spray directions of the nozzle 2 in the circumferential direction are opposite, so that the nozzle 2 can be driven to rotate by means of water flow recoil force. The top of the nozzle 2 is provided with a top cover 22, the top cover 22 is provided with an injection hole 221 which is arranged corresponding to the injection hole 21, a second gap 200 which can be used for sucking air into the jet water column in the jet state is formed between the injection hole 221 and the injection hole 21, and the injection hole 221 and the second gap 200 jointly form a second air-entrapping structure. Similarly, according to the venturi effect, when the water column passes through the spray hole and the spray hole, negative pressure is generated at the second gap to suck the surrounding air into the water column, so that the water column with bubbles is formed, when the water column with bubbles is hit on the surface of the object to be cleaned, the stripping force to pollutants can be increased at the moment of bubble breaking, and the cleaning effect is improved.

The upper surface of the top cover 22 is gradually inclined downward from the center toward the edge to form a guide surface 222. The above structure can keep the upper surface of the top cover in a water-free or water-less state, so as to avoid water stain being sucked into the second gap 200 to affect the air-entraining effect of the second air-entraining structure.

The bottom of the nozzle 2 is provided with a water inlet 23 and a water inlet sleeve 24 extending downwards around the water inlet 23, the bottom edge of the water inlet sleeve 24 is provided with a clamping foot 25 which can penetrate through the water outlet 14 to prop against the top wall of the runner 11 so as to rotationally restrain the nozzle 2 on the spray arm body 1, and the structure is convenient for rotationally connecting the nozzle on the spray arm. The outer side wall of the catch 25 is shaped as a flow guiding slope 251 gradually sloping outwards in the radial direction from bottom to top. This configuration reduces the energy loss of fluid entering the nozzle 2 within the flow passage 11.

The end part of the spray arm 1 of the embodiment is provided with the spray nozzle 2 which can rotate along with the spray arm 1 and simultaneously rotate relative to the spray arm 1, thereby being beneficial to eliminating the cleaning dead angle; the bubble-containing water column is formed through the air-entrapping structure, and at the moment of contacting the pollutant, the bubbles entrained in the water flow are broken, so that the stripping force of the pollutant on the surface of the object to be cleaned can be improved, and the cleaning effect is further improved; the nozzle 2 is arranged outside the top plate 3, so that food residues, silt and the like are prevented from being mixed in a gap between the top plate 3 and the nozzle, and the rotation stability of the nozzle 2 is improved.

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. The utility model provides a spray arm for cleaning machine, includes spray arm main part (1), and spray arm main part (1) is opened has a plurality of hole for water spraying (13), its characterized in that: the shower arm body (1) is further provided with a water outlet (14), a nozzle (2) capable of rotating relative to the shower arm body (1) is connected to the water outlet (14), the nozzle (2) is provided with a spray hole (21), and the outer side wall of the nozzle (2) is provided with a gas layer capable of surrounding the spray hole (21) and supplying gas to the spray hole (21) to form a jet water column with bubbles.

2. The spray arm for a cleaning machine of claim 1, wherein: a top cover (22) which is arranged at intervals with the spray nozzle (2) is arranged on the outer side wall of the spray nozzle (2), a spray hole (221) which is arranged corresponding to the spray hole (21) is arranged on the top cover (22), and a second gap (200) which can be used for sucking air into a jet water column under a jet state is formed between the spray hole (221) and the spray hole (21).

3. The spray arm for a cleaning machine of claim 2, wherein: the top of the spray arm body (1) is provided with an air collecting cavity (30) which can enclose the water spray hole (13) therein so as to supply air to the water spray hole (13) to form a spray water column with bubbles.

4. A spray arm for a cleaning machine as recited in claim 3, wherein: the spray arm main body (1) has opposite length and width directions, the nozzle (2) is arranged at the end part of the spray arm main body (1), and the air collection cavity (30) extends from the central part of the spray arm main body (1) to the end part and is positioned at the inner side of the nozzle (2).

5. The spray arm for a cleaning machine of claim 4, wherein: the water spraying hole (13) and the spray nozzle (2) are both positioned at the upper surface of the spray arm main body (1), the upper surface of the spray arm main body (1) is provided with a concave mounting groove (20), the mounting groove (20) is formed between the end part of the air collecting cavity (30) and the outer end wall of the spray arm main body (1) to form a semi-enclosed structure, the water outlet (14) is arranged corresponding to the bottom of the mounting groove (20), and the spray nozzle (2) can be rotationally arranged in the mounting groove (20).

6. The spray arm for a cleaning machine of claim 5, wherein: the spray nozzle is characterized in that the spray nozzle (2) is disc-shaped, the end part of the spray arm main body (1) is formed into an arc-shaped end wall (18) corresponding to the outer edge of the spray nozzle (2) above the spray arm main body, a top plate (3) arranged at intervals is arranged on the top wall of the spray arm main body (1), the end part of the top plate (3) is inwards recessed to form an arc-shaped notch (32) which surrounds the periphery of the spray nozzle (2) and is matched with the periphery of the spray nozzle, and the arc-shaped notch (32) and the top wall of the spray arm main body outside the arc-shaped notch jointly encircle to form the mounting groove (20).

7. The spray arm for a cleaning machine of claim 6, wherein: the side open part of the semi-surrounding structure of the mounting groove (20) forms an air inlet of the air collecting cavity (30).

8. The spray arm for a cleaning machine of claim 6, wherein: the air collection cavity (30) is enclosed between the top plate (3) and the upper surface of the spray arm main body (1), the top plate (3) is provided with jet holes (31) which are arranged corresponding to the water spray holes (13), and a first gap (100) which can be used for sucking air into jet water columns in a jet state is formed between the jet holes (31) and the water spray holes (13).

9. The spray arm for a cleaning machine of claim 8, wherein: and a supporting rib (33) for supporting the top plate (3) on the spray arm main body (1) is arranged below the top plate.

10. The spray arm for a cleaning machine of claim 9, wherein: at least part of the supporting ribs (33) are arc-shaped and extend along the edge of the arc-shaped notch (32) below the top plate (3), and gaps (331) for allowing gas to enter the gas collection cavity (30) from the outside are reserved between at least one end of the supporting ribs (33) and the inner wall of the gas collection cavity (30).

11. The spray arm for a cleaning machine of claim 6, wherein: the top edge of the circular arc-shaped end wall (18) is provided with a drainage inclined surface (181) which gradually inclines outwards along the radial direction from top to bottom.

12. The shower arm for a washer of any one of claims 2-11, wherein: the upper surface of the top cover (22) gradually slopes downwards from the center to the edge to form a diversion surface (222).

13. The shower arm for a washer of any one of claims 1-11, wherein: the number of the spray holes (21) is at least two.

14. The spray arm for a cleaning machine of claim 13, wherein: the nozzle (2) is disc-shaped, and the spray holes (21) are arranged on the upper surface of the nozzle (2) at intervals in a circumferential inclined manner.

15. The shower arm for a washer of any one of claims 1-11, wherein: the bottom of the nozzle (2) is provided with a water inlet (23) and a water inlet sleeve (24) extending downwards around the water inlet (23), and the water inlet sleeve (24) is rotationally connected with the water outlet (14) through a buckle.

16. The spray arm for a cleaning machine of claim 15, wherein: the bottom edge of the nozzle (2) is provided with a clamping foot (25) which can penetrate through the water outlet (14) and prop against the top wall of the runner (11) so as to rotationally restrain the nozzle (2) on the spray arm main body (1).

17. The spray arm for a cleaning machine of claim 16, wherein: the outer side wall of the clamping foot (25) is shaped into a diversion inclined plane (251) which gradually inclines outwards along the radial direction from bottom to top.

18. 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: the spray arm of any one of claims 1-17, rotatably disposed above the filter plate and in communication with the recirculation zone via a pumping mechanism.