CN219680536U

CN219680536U - Spray arm for cleaning machine and cleaning machine

Info

Publication number: CN219680536U
Application number: CN202223370832.1U
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 and the cleaning machine, wherein the top of the spray arm is provided with a water spray hole, the upper surface of the spray arm is provided with a flow guide structure capable of guiding water flow from the middle to the edge, and the flow guide structure is positioned at the central part of the spray arm and is obliquely arranged along the length direction of the spray arm. The water guiding structure of the utility model quickly discharges water splashed on the surface of the top plate by the water column sprayed upwards and fallen back, and the water guiding structure is obliquely arranged at the central part of the top plate along the length direction of the top plate, so that the water guiding stroke is shortened while the water guiding surface is enlarged, the water guiding structure is beneficial to quickly realizing no residual water on the surface of the top plate, the risk of the accumulated water invading the air collecting cavity is eliminated, and the no residual water in the air collecting cavity is further maintained.

Description

Spray arm for cleaning machine and cleaning machine

Technical Field

The utility model relates to the technical field of dish washers, in particular to a spray arm for a cleaning machine and the cleaning machine.

Background

Dish washing machines generally use a water pump to lift and spray water onto dishes in a washing space to achieve a washing effect. The impact force of water flow sprayed to the dishes is weak and not uniform enough, and when the dishes are more, the water flow cannot be covered by the water flow, so that the cleaning effect is poor.

In order to solve the above-mentioned problems, the inventor's prior application 20201514851. X discloses a spray arm and its application, which discloses a structure, comprising a body, wherein the body is provided with a flow channel extending along the length direction of the body, the bottom wall of the body is provided with a water inlet communicated with the flow channel, the top wall and/or the side wall is provided with a water spraying hole, the top of the body is provided with a top plate, the bottom wall of the top plate and the top wall of the body are jointly enclosed to form a gas collecting cavity for storing gas, the water spraying holes are distributed in a region corresponding to the gas collecting cavity, the top plate is provided with a nozzle corresponding to the water spraying hole, and a gap capable of generating negative pressure in the water flow spraying process is arranged between the upper end of the water spraying hole and the lower end of the nozzle.

The spray arm can spray cavitation water columns to improve the cleaning effect, but as the spray arm body is in a delphinium shape, namely, the middle is low and the two ends are high, the water columns falling back after spraying are easy to stay on the upper surface of the spray arm, particularly in the middle concave area, so that water stains are easy to invade into the air collection cavity, and the normal air entrainment of the spray arm is influenced.

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 keep no residual water on the upper surface and in the gas collection cavity.

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 cleaning machine, open at the top has the hole for spraying water, the spray arm top is provided with the roof, the diapire of this roof with enclose jointly between the roof of spray arm and become the gas-collecting chamber that is used for storing gas, open on the roof has the spout that corresponds the hole for spraying water, just have the clearance that can produce negative pressure in the rivers injection process between hole for spraying water upper end and the spout lower extreme, the upper surface of roof is provided with the water conservancy diversion structure that can follow centre to edge water conservancy diversion, and this water conservancy diversion structure is located the central part of roof and arranges along roof length direction slope.

The upper surface of spray arm is provided with the water conservancy diversion structure that can lead rivers from the centre to edge, and this water conservancy diversion structure is located the central part of spray arm and along spray arm length direction slope arrangement. The central part of the upper surface of the spray arm is provided with a convex rib which can divide the spray arm into two first areas and second areas which are oppositely arranged, and the convex rib is in transitional connection with the first areas and the second areas respectively through smooth curved surfaces from top to bottom.

The spray arm comprises a spray arm main body and a top plate arranged at the top of the spray arm main body, the water spray holes are formed in the top wall of the spray arm main body, an air collecting cavity for storing air is jointly enclosed between the bottom wall of the top plate and the top wall of the spray arm main body, a nozzle corresponding to the water spray holes is formed in the top plate, and a gap capable of generating negative pressure in the water flow spraying process is formed between the upper end of the water spray holes and the lower end of the nozzle.

Preferably, a rib capable of dividing the top plate into two oppositely arranged first areas and second areas is arranged at the central part of the upper surface of the top plate, and the rib is in transitional connection with the first areas and the second areas through smooth curved surfaces from top to bottom. By adopting the structure, water at the central part of the top plate is conveniently guided to the edge of the side wall of the spray arm and is discharged downwards along the convex edges and the smooth curved surfaces, so that no residual water is left on the upper surface of the top plate, and the phenomenon that accumulated water invades the air collecting cavity due to long-time accumulated water is avoided.

Preferably, the smooth curved surface extends from the center to the end from top to bottom on the upper surface of the spray arm. The first area gradually decreases from the first side edge to the second side edge of the long side of the spray arm, and the second area gradually decreases from the second side edge to the first side edge of the long side of the spray arm. The first region is rotationally symmetric with respect to the second region. By adopting the structure, the device not only can play a better role in diversion and drainage, but also can reduce the transverse resistance of the rotation of the spray arm.

Preferably, the width of the spray arm and the top plate gradually increases from the middle to the two ends, the end parts form arc-shaped end walls, and the convex edges are obliquely arranged at the central part of the top plate so as to restrict the first area and the second area to form a water drop-shaped structure. The structure increases the flow guiding area to a certain extent so as to realize that the large area of the upper surface of the top plate has no residual water.

Preferably, the upper surface of the spray arm forms a diversion inclined plane which gradually arches upwards from the edges of two sides to the middle, and the joint of the two diversion inclined planes forms a convex edge extending along the length direction of the spray arm. And the side wall of the spray arm is provided with an overflow port which is arranged close to the outer edge of the diversion inclined plane and is used for discharging water in the gas collection cavity. The structure can timely drain accumulated water invaded into the air collecting cavity so as to realize no residual water in the air collecting cavity.

In the utility model, the water spraying holes are multiple and are distributed on the convex edge or at two sides of the convex edge at intervals close to the convex edge.

In the utility model, the inside of the spray arm is hollow to form a runner extending along the length direction, the top wall of the spray arm is provided with a water outlet which is arranged near the end part and is communicated with the runner, and the water outlet is connected with a rotatable nozzle. The spray nozzle can rotate along with the spray arm and simultaneously rotate relative to the spray arm, thereby being beneficial to eliminating the cleaning dead angle.

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

Preferably, the top plate is supported on the top wall of the spray arm through a support rib, the support rib is arc-shaped and extends below the top plate along the edge of the arc-shaped notch, and the support rib separates the mounting groove and the gas collection cavity into relatively independent parts. The structure provides support for the top plate on one hand, and on the other hand can prevent invasion of washing water, pollutants and the like into the air 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. This structure is convenient for drain ponding of nozzle department fast.

Preferably, the top wall of the nozzle forms a first diversion surface gradually sloping downwards from the center to the edge, and the bottom wall of the nozzle forms a second diversion surface gradually sloping downwards from the edge to the water inlet in the middle. The structure ensures that the upper surface and the inner flow passage of the nozzle realize no residual water.

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 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 upper surface of the spray arm is provided with the diversion structure capable of diversion water flow from the middle to the edge so as to quickly discharge water sprayed upwards and fallen back on the surface of the spray arm, and the diversion structure is obliquely arranged at the central part of the spray arm along the length direction of the top plate, so that the diversion stroke is shortened while the diversion surface is enlarged, the aim of quickly realizing no residual water on the surface of the spray arm is fulfilled, the risk of accumulated water invading the air collecting cavity is eliminated, and no residual water in the air collecting cavity is further maintained.

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 top view of a spray arm (hidden top plate) according to an embodiment of the present utility model;

FIG. 3 is an exploded view of a spray arm and nozzle according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a spray arm according to an embodiment of the present utility model;

fig. 5 is a partial enlarged view of fig. 4.

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 5, the shower arm for a cleaning machine of the present embodiment includes a shower arm main body 1 and a top plate 2 provided on the top of the shower arm main body 1. The inside cavity of spray arm main part 1 forms runner 11 that extends along length direction, the diapire of spray arm main part 1 is opened there is the water inlet, the roof is opened there is the hole for water spraying 12 that is linked together with runner 11, enclose jointly between roof 2's diapire and the roof of spray arm main part 1 and be used for storing gaseous gas collection chamber 20, it has the spout 21 that corresponds hole for water spraying 12 to open on roof 2, and have the clearance 100 that can produce the negative pressure in the rivers injection process between hole for water spraying 12 upper end and the spout 21 lower extreme, the upper surface of roof 2 is provided with the water conservancy diversion structure that can follow the centre to the edge water conservancy diversion, this water conservancy diversion structure is located the central part of roof 2 and arranges along roof 2 length direction slope.

The central part of the upper surface of the top plate 2 is provided with a convex rib 22 which can divide the top plate into two oppositely arranged first areas 01 and second areas 02, and the convex rib 22 is respectively connected with the first areas 01 and the second areas 02 in a transitional manner through a smooth curved surface 200 from top to bottom. By adopting the structure, water at the central part of the top plate 2 is conveniently guided to the edge of the side wall of the spray arm and is discharged downwards along the convex rib 22 and the smooth curved surface 200, so that no residual water is left on the upper surface of the top plate 2, and the phenomenon that accumulated water invades the air collecting cavity due to long-time accumulated water is avoided.

The smooth curved surface 200 extends from the center to the end from top to bottom on the upper surface of the shower arm top plate 2. The first region 01 gradually decreases from the first side edge to the second side edge of the long side of the shower arm, and the second region 02 gradually decreases from the second side edge to the first side edge of the long side of the shower arm. The first region 01 is rotationally symmetrical with respect to the second region 02. By adopting the structure, the device not only can play a better role in diversion and drainage, but also can reduce the transverse resistance of the rotation of the spray arm.

The spray arm body 1 and the top plate 2 have widths gradually increasing from the middle to both ends and arc-shaped end walls 23 are formed at the ends, and the ribs 22 are obliquely arranged at the central part of the top plate 2 so as to restrict the first region 01 and the second region 02 from water droplet-shaped structures. The structure increases the flow guiding area to a certain extent so as to realize that the upper surface of the top plate 2 has large area without residual water.

The upper surface of the spray arm body 1 (i.e. the bottom wall of the gas collecting cavity) forms a diversion inclined plane 24 which gradually arches upwards from the edges of two sides to the middle, and the joint of the two diversion inclined planes 24 forms a convex edge 25 which extends along the length direction of the spray arm. The side wall of the spray arm main body 1 is provided with an overflow port 26 which is arranged close to the outer edge of the diversion inclined plane 24 and is used for discharging water in the gas collecting cavity. The structure can timely drain accumulated water invaded into the air collecting cavity 20 so as to realize no residual water in the air collecting cavity 20. The overflow port 26 also serves as an air inlet for the air collection chamber 20.

In this embodiment, the water spray holes 12 are plural and are spaced apart on the flange 25 or on both sides of the flange 25 adjacent to the flange 25. The acute angle between the diversion inclined planes 24 on the two sides of the convex edge 25 and the horizontal plane is 2-10 degrees. The acute angle between the convex edge 25 and the convex edge 22 is 10-45 deg.. By adopting the structure, the water guide effect is improved.

The top wall of the spray arm main body 1 is provided with a water outlet 13 which is arranged near the end and is communicated with the flow channel 11, and the water outlet 13 is connected with a rotatable nozzle 3. The nozzle 3 can rotate along with the spray arm and simultaneously rotate relative to the spray arm, thereby being beneficial to eliminating the cleaning dead angle.

The nozzle 3 is in a disc shape, the end of the spray arm body 1 is shaped into an arc-shaped end wall 23 opposite to the outer edge of the nozzle 3 above the end, and the end of the top plate 2 is inwards recessed to form an arc-shaped notch 27 which surrounds the periphery of the nozzle 3 and is matched with the outer edge of the nozzle. The inner wall of the arc-shaped notch 27 is tangentially connected with the arc-shaped end wall 23 of the spray arm main body 1 to form a mounting groove 270 for semi-surrounding the nozzle, and the part of the arc-shaped end wall 23 corresponding to the mounting groove 270 forms an air inlet of the air collecting cavity 20. After the spray nozzle 3 is arranged on the spray arm in the mode, the spray arm has good integrity and mainly has the following effects: 1. the rotation of the nozzle 3 is guided in the circumferential direction, so that the rotation stability of the nozzle 3 is improved; 2. the semi-enclosing structure can prevent the accumulation of pollutants because food waste and sediment can be washed away by the opening of the mounting groove 270 and the rotation of the nozzle 3, so that the assembly gap between the edge of the nozzle 3 and the edge of the top plate 2 can be reduced, and the rotation stability of the nozzle 3 can be further improved.

The top plate 2 is supported on the top wall of the spray arm body 1 through the supporting ribs 28, the supporting ribs 28 are arc-shaped and extend along the edge of the arc-shaped notch 27 below the top plate 2, and the supporting ribs 28 separate the mounting groove 270 from the air collecting cavity 20 to prevent washing water, pollutants and the like from invading into the air collecting cavity.

The top edge of the circular-arc-shaped end wall 23 is formed with a drainage slope 231 that gradually slopes radially outward from top to bottom. This structure facilitates the rapid drainage of the accumulated water at the nozzle 3.

The top wall of the nozzle 3 forms a first diversion surface 301 which gradually slopes downwards from the center to the edge, and the bottom wall of the nozzle 3 forms a second diversion surface 302 which gradually slopes downwards from the edge to the middle water inlet. The structure makes the upper surface and the inner flow passage of the nozzle 3 realize no residual water.

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

According to the embodiment, the upper surface of the top plate 2 is provided with the diversion structure capable of diversion of water flow from the middle to the edge, so that water sprayed upwards and fallen back from the water column splashed on the surface of the top plate is rapidly discharged, and the diversion structure is obliquely arranged at the central part of the top plate 2 along the length direction of the top plate 2, so that the diversion stroke is shortened while the diversion surface is enlarged, the phenomenon that the surface of the top plate is free of residual water is facilitated to be rapidly realized, the risk that accumulated water invades the air collection cavity is eliminated, and the residual water in the air collection cavity is further kept.

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 a washer, the top of which is provided with a water spray hole (12), characterized in that: the upper surface of spray arm is provided with the water conservancy diversion structure that can lead rivers from the centre to edge, and this water conservancy diversion structure is located the central part of spray arm and along spray arm length direction slope arrangement.

2. The spray arm for a cleaning machine of claim 1, wherein: the central part of the upper surface of the spray arm is provided with a convex rib (22) which can divide the spray arm into two oppositely arranged first areas (01) and second areas (02), and the convex rib (22) is in transitional connection with the first areas (01) and the second areas (02) through smooth curved surfaces (200) from top to bottom respectively.

3. The spray arm for a cleaning machine of claim 2, wherein: the smooth curved surface (200) extends from the center to the end from top to bottom on the upper surface of the spray arm.

4. A spray arm for a cleaning machine as recited in claim 3, wherein: the first area (01) gradually decreases from the first side edge to the second side edge of the long side of the spray arm, and the second area (02) gradually decreases from the second side edge to the first side edge of the long side of the spray arm.

5. A spray arm for a cleaning machine as recited in claim 3, wherein: the first region (01) is rotationally symmetrical with respect to the second region (02).

6. The spray arm for a cleaning machine of claim 2, wherein: the width of the spray arm is gradually increased from the middle to the two ends, the ends of the spray arm form arc-shaped end walls (23), and the convex edges (22) are obliquely arranged at the central part of the top plate (2) so as to restrict the first area (01) and the second area (02) to form a water drop-shaped structure.

7. The shower arm for a washer of any one of claims 2-6, wherein: the novel water jet spraying device comprises a spray arm main body (1) and a top plate (2) arranged at the top of the spray arm main body (1), wherein a water jet hole (12) is formed in the top wall of the spray arm main body (1), a gas collecting cavity (20) for storing gas is formed by surrounding the bottom wall of the top plate (2) and the top wall of the spray arm main body (1), a nozzle (21) corresponding to the water jet hole (12) is formed in the top plate (2), and a gap (100) capable of generating negative pressure in the water jet process is formed between the upper end of the water jet hole (12) and the lower end of the nozzle (21).

8. The spray arm for a cleaning machine of claim 7, wherein: the upper surface of spray arm main part (1) forms the water conservancy diversion inclined plane (24) that upwards arches gradually from both sides edge to centre, and the chimb (25) that extends along spray arm length direction are formed in the junction of two water conservancy diversion inclined planes (24).

9. The spray arm for a cleaning machine of claim 8, wherein: the acute angle between the diversion inclined planes (24) at the two sides of the convex edge (25) and the horizontal plane is 2-10 degrees.

10. The spray arm for a cleaning machine of claim 8, wherein: the acute angle formed by the convex edge (25) and the convex edge (22) is 10-45 degrees.

11. The spray arm for a cleaning machine of claim 7, wherein: the side wall of the spray arm main body (1) is provided with an overflow port (26) which is arranged close to the outer edge of the diversion inclined plane (24) and is used for supplying water in the gas collection cavity (20) to be discharged.

12. The spray arm for a cleaning machine of claim 7, wherein: the water spraying holes (12) are multiple and are distributed on the convex edge (25) or at intervals on two sides of the convex edge (25) close to the convex edge (25).

13. The spray arm for a cleaning machine of claim 7, wherein: the spray arm is characterized in that a flow channel (11) extending along the length direction is formed in the spray arm body (1) in a hollow mode, a water outlet (13) which is arranged close to the end portion and communicated with the flow channel (11) is formed in the top wall of the spray arm body (1), and a rotatable nozzle (3) is connected to the water outlet (13).

14. The spray arm for a cleaning machine of claim 13, wherein: the spray nozzle (3) is disc-shaped, the end part of the spray arm main body (1) is formed into an arc-shaped end wall (23) opposite to the outer edge of the spray nozzle (3) above the spray arm main body, and the end part of the top plate (2) is inwards recessed to form an arc-shaped notch (27) which surrounds the periphery of the spray nozzle (3) and is matched with the periphery of the spray nozzle.

15. The spray arm for a cleaning machine of claim 14, wherein: the inner wall of the arc-shaped notch (27) is tangentially connected with the arc-shaped end wall (23) of the spray arm to jointly enclose a mounting groove (270) for semi-surrounding and mounting the spray nozzle (3).

16. The spray arm for a cleaning machine of claim 15, wherein: the top plate (2) is supported on the top wall of the spray arm main body (1) through supporting ribs (28), the supporting ribs (28) are arc-shaped and extend below the top plate (2) along the edge of the arc-shaped notch (27), and the supporting ribs (28) divide the mounting groove (270) and the air collecting cavity (20) into relatively independent parts.

17. The spray arm for a cleaning machine of claim 14, wherein: the top edge of the circular arc-shaped end wall (23) is provided with a drainage inclined surface (231) which gradually inclines outwards along the radial direction from top to bottom.

18. The spray arm for a cleaning machine of claim 13, wherein: the top wall of the nozzle (3) forms a first diversion surface (301) gradually inclining downwards from the center to the edge, and the inner bottom wall of the nozzle (3) forms a second diversion surface (302) gradually inclining downwards from the edge to the water inlet in the middle.

19. 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 18 rotatably disposed above the filter plate and in communication with the recirculation zone via a pumping mechanism.