CN219846448U

CN219846448U - Spray arm for cleaning machine and cleaning machine

Info

Publication number: CN219846448U
Application number: CN202321317376.6U
Authority: CN
Inventors: 施郑赞; 韩健健; 张昌海; 张宇; 朱文杰; 朱英昊
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2023-05-26
Filing date: 2023-05-26
Publication date: 2023-10-20
Anticipated expiration: 2033-05-26

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 basically strip-shaped body, a water inlet, a runner which is communicated with the water inlet and basically extends along the length direction of the body, and a first spray hole which is in fluid communication with the runner; the first spray hole comprises a circular hole and a strip-shaped hole extending outwards from the edge of the circular hole in a radial direction; the method is characterized in that: the cross-sectional area of the first spray hole gradually becomes smaller along the direction of water flow spraying, the structure of the first spray hole plays a role in converging water flow, the loss of fluid in the spraying process can be reduced, the impact force of the water flow is improved, and the cleaning effect of tableware is further improved.

Description

Spray arm for cleaning machine and cleaning machine

Technical Field

The utility model relates to a spray arm capable of cleaning tableware, fruits and vegetables, in particular to a spray arm for a cleaning machine and the cleaning machine.

Background

The box-type dish washer is large in size, and in order to ensure the cleaning effect, a lower spray arm which sprays upwards is generally arranged at the bottom of the box body and is used for cleaning tableware in a lower bowl basket, and an upper spray arm which sprays upwards is arranged in the middle of the box body and is used for cleaning the tableware in the upper bowl basket. In the existing upper spray arm structure, the supplied water flow is generally circulating water from the box body, namely, the circulating water is conveyed to the top of the upper spray arm from the bottom of the box body through a vertically arranged pipeline by a water pumping mechanism and then is sprayed upwards through the upper spray arm. The water flow enters the upper spray arm from the top of the upper spray arm, flows into the left and right channels of the upper spray arm, and is sprayed from the spray holes on the top wall of the upper spray arm.

As disclosed in chinese patent publication No. CN202120988032.2 (publication No. CN 215838899U), a spray arm for a cleaning machine and a cleaning machine using the same, the spray arm has a body extending along a length direction, a water inlet is formed in a middle portion of a top wall of the body, a flow passage communicating with the water inlet and extending along the length direction of the body is formed in the body, a spray hole communicating with the flow passage is formed in the top wall of the body, a water spray port communicating with the flow passage and used for balancing a rotation speed of the spray arm is formed in a side wall of the body, and the water spray port is arranged near an end portion of the body.

The spray holes on the spray arm are usually designed to be round, and in general, tableware with larger volume can be placed in the lower bowl basket, and tableware with medium or smaller volume, such as mug, milk cup, rice bowl and the like, are placed in the upper bowl basket, and the water column of the round holes on the spray arm is concentrated, so that the cleaning effect on slender tableware such as mug, milk cup and the like is poor.

In order to solve the above problems, chinese patent publication No. CN202121476508.0 (publication No. CN 215502852U) discloses a spray arm for a cleaning machine and a cleaning machine using the same, in which a long hole is formed in a body, the long hole includes a circular portion located at the center, and a first extension portion and a second extension portion extending outward from both sides of the circular portion, and the structure is beneficial to expanding the impact range of a jet water column.

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 ensure the spray intensity and scatter water flow.

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

The technical scheme adopted by the utility model for solving the first technical problem is as follows: a spray arm for a cleaning machine is provided with a body, wherein a water inlet, a runner communicated with the water inlet and a first spray hole communicated with the runner in a fluid manner are formed in the body; the first spray hole comprises a circular hole and a strip-shaped hole extending outwards from the edge of the circular hole in a radial direction; the method is characterized in that: the cross-sectional area of the first spray hole gradually becomes smaller along the direction of water flow spraying.

Preferably, the included angle between the inner wall surface of the first spray hole and the vertical surface is 7-13 degrees, so that the fluid loss can be reduced, and the flushing effect can be ensured.

In order to improve the scattering of the first spray hole to the water flow, the two strip-shaped holes are symmetrically arranged on two sides of the round hole, so that a good cleaning effect is achieved.

Preferably, the length of the first spray hole is L, and L is more than or equal to 6.5mm and less than or equal to 7.5mm; the width of the first spray hole is M, and M is more than or equal to 1.0mm and less than or equal to 1.4mm; the diameter of the circular hole is D, and L is more than or equal to 2.5mm and less than or equal to 3.5mm.

The bowl basket is internally provided with a bowl, the structure of the bowl determines that the bowl needs water flow with higher lift to achieve better cleaning effect, the body is also provided with a second spray hole in fluid communication with the runner, and the cross section of the second spray hole is circular. The circular holes act to focus the water flow and thereby enhance the spray.

Preferably, the second spray hole comprises a contraction section and a smooth section which are sequentially arranged and connected along the water flow spraying direction, the contraction section is a conical surface with gradually reduced diameter along the water flow spraying direction, and the cross section area of the smooth section is unchanged. The smooth section enables water flow to be sprayed out in a straight line mode, the contraction section plays a role in pressurizing the water flow, and the spraying effect of the water flow is guaranteed.

Preferably, the included angle between the wall surface of the contraction section and the vertical surface is 7-13 degrees.

In the above aspect, the body is substantially strip-shaped, and the flow passage extends substantially along the length direction of the body.

Preferably, the two sides of the water inlet are provided with first spray holes, and the number of the first spray holes on the two sides of the water inlet is the same or different.

Preferably, the water inlet, the first spray hole and the second spray hole are arranged on the same wall surface of the body, at least one first spray hole and at least one second spray hole are distributed on the same side of the water inlet, and the second spray hole is positioned between the first spray hole and the water inlet. The positions of the first spray hole and the second spray hole can be determined according to the placement positions of tableware on the bowl basket, the first spray hole mainly cleans slender tableware such as mugs, milk cups and the like, and the second spray hole mainly cleans tableware such as rice bowls and the like.

In the above scheme, the water inlet, the first spray hole and the second spray hole are all arranged on the top wall of the body, and the spray hole is arranged on the bottom wall of the body. Of course, the water inlet, the first spray hole and the second spray hole can be arranged on the bottom wall of the body according to the direction of the tableware to be cleaned.

In order to wash the detergent on the door body of the cleaning machine, the detergent is dissolved in water to clean greasy dirt on tableware, a nozzle for flushing the detergent on the door body of the cleaning machine is further arranged on the body, the nozzle is in fluid communication with the flow channel, the nozzle is arranged adjacent to the end part of the body, and an included angle is formed between the spraying direction of the nozzle and the horizontal plane. The position of the spout may be dependent on the position of the dispenser on the washer door for placing the detergent.

Preferably, at least two of the spouts are positioned on the same side or different sides of the water inlet.

In order to reduce the fluid loss, the wall surface of the flow channel, which faces the water inlet, is convexly provided with a flow guide column, and at least the position adjacent to the end part of the flow guide column forms a smooth flow guide surface. When water flow is input into the flow channel from the water inlet, the water flow is firstly contacted with the guide posts and is dispersed through the flow channels on the two sides of the guide posts, so that the water flow is prevented from directly striking the inner bottom wall of the flow channel to cause water flow disorder, thereby greatly reducing fluid loss, further improving the lift and water flow of the jet water column and improving the cleaning effect.

The structure is simple, the guide post is a conical structure with the tip end facing the water inlet, and the peripheral surface of the conical structure can form the guide surface.

The utility model solves the second technical problem by adopting the technical proposal that: the cleaning machine further comprises a box body, and the spray arm is rotatably arranged in the box body.

Preferably, an upper bowl basket and a lower bowl basket are arranged in the box body at intervals along the up-down direction, and the spray arm is positioned between the upper bowl basket and the lower bowl basket. Large tableware such as cookware can be placed in the lower bowl basket, tableware such as cups and bowls can be placed in the upper bowl basket, the tableware is reasonably placed, and the placing quantity of the tableware is improved.

Compared with the prior art, the utility model has the advantages that: according to the utility model, the first spray hole is designed into the circular hole and the strip-shaped hole, the circular hole can ensure the spray intensity of water flow, and the strip-shaped hole can play a role in scattering the water flow, so that the cleaning force of tableware is ensured, the cleaning range is ensured, and the cleaning effect of the first spray hole on slender cylindrical tableware such as milk cups, mugs and the like is good; the cross section area of the first spray hole is gradually reduced along the direction of water flow spraying, and the structure of the first spray hole plays a role in converging water flow, so that the loss of fluid in the spraying process can be reduced, the impact force of the water flow is improved, and the cleaning effect of tableware is further improved;

in a word, the structure of this first orifice makes the rivers that jet more scattered, but the lift can not be too low again, guarantees the injection intensity.

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 structure of FIG. 1 in another direction;

FIG. 3 is an enlarged view at B of FIG. 1;

FIG. 4 is a cross-sectional view of FIG. 1;

FIG. 5 is another cross-sectional view of FIG. 1;

fig. 6 is a schematic view of one of the cleaners equipped with the shower arm of fig. 1.

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 6, the cleaning machine of the present preferred embodiment includes a cabinet 1 and a shower arm a rotatably provided in the cabinet 1.

The spray arm A is provided with a strip-shaped body 2, a water inlet 21 is formed in the middle of the top wall of the body 2, a flow channel 22 which is communicated with the water inlet 21 and extends along the length direction of the body 2 is formed in the body 2, and a first spray hole 23 and a second spray hole 24 which are in fluid communication with the flow channel 22 are formed in the top wall of the body 2.

As shown in fig. 3, the first nozzle hole 23 includes a circular hole 231 and two bar-shaped holes 232 extending radially outward from the edge of the circular hole 231, and the bar-shaped holes 232 are symmetrically located at two sides of the circular hole 231.

The cross-sectional area of the first nozzle hole 23 gradually decreases in the direction of water jet, and the angle between the inner wall surface of the first nozzle hole 23 and the vertical surface (the vertical surface is a plane perpendicular to the horizontal plane) is 7 ° to 13 °, preferably 10 °. This configuration of the first nozzle 23 serves to concentrate the flow of water and reduce fluid loss during the ejection process.

In this embodiment, the length of the first nozzle 23 is L, and L is 6.5mm or less and 7.5mm or less, preferably 7.0mm; the width of the first spray hole 23 is M, and M is more than or equal to 1.0mm and less than or equal to 1.4mm, and preferably 1.2mm; the diameter of the circular hole 231 is D,2.5 mm.ltoreq.L.ltoreq.3.5 mm, preferably 3.0mm.

The first spray hole 23 is designed into a circular hole 231 positioned at the central part and a strip-shaped hole 232 positioned beside the circular hole 231, the circular hole 231 can ensure the spray intensity of water flow, the strip-shaped hole 232 can also play a role of scattering the water flow, so that the cleaning force and the cleaning range of tableware are ensured, and the cleaning effect of the first spray hole 23 on slender cylindrical tableware such as milk cups, mugs and the like is good; the inner wall surface of the first spray hole 23 is inclined inwards along the water flow spraying direction, so that the cross section area of the first spray hole 23 is reduced along the water flow spraying direction, the structure of the first spray hole 23 plays a role in converging water flow, the loss of fluid in the spraying process can be reduced, the impact force of the water flow is improved, and the cleaning effect on tableware is further improved

As shown in fig. 4, the second nozzle hole 24 has a circular cross section, and the circular hole serves to concentrate water flow to enhance injection. The rice bowl is usually placed in the bowl basket, the structure of the rice bowl determines that the water flow with higher lift is needed to achieve better cleaning effect, and the second spray hole 24 has good cleaning effect on the rice bowl.

In this embodiment, the second nozzle hole 24 includes a contraction section 241 and a smooth section 242 which are sequentially arranged and connected along the direction of water jet, the contraction section 241 is a conical surface with gradually decreasing diameter along the direction of water jet, and the included angle between the wall surface of the contraction section 241 and the vertical surface (the vertical surface refers to a plane perpendicular to the horizontal surface) is 7 ° to 13 °, preferably 10 °; the cross-sectional area of the smooth section 242 was unchanged, and the smooth section 242 had a diameter of 3mm and a length of 1mm. The smooth section 242 makes the water flow jet out in a straight line form, and the contraction section 241 plays a role in pressurizing the water flow, so as to ensure the jet effect of the water flow.

The two sides of the water inlet 21 are provided with first spray holes 23, and the number of the first spray holes 23 at the two sides of the water inlet 21 is the same or different. At least one first spray orifice 23 and at least one second spray orifice 24 are distributed on the same side of the water inlet 21, the second spray orifice 24 being located between the first spray orifice 23 and the water inlet 21. In this embodiment, two first spray holes 23 and three second spray holes 24 are provided on one side of the water inlet 21, and one first spray hole 23 and three second spray holes 24 are provided on the other side of the water inlet 21.

The first nozzle hole 23 and the second nozzle hole 24 may have the following arrangement:

the first spray holes 23 are at least two and are arranged at intervals along the length direction of the body 2, and the center lines of the first spray holes 23 are arranged on different straight lines extending along the length direction of the body 2. The second spray holes 24 are at least two and are arranged at intervals along the length direction of the body 2, and the center lines of the second spray holes 24 are arranged on different straight lines extending along the length direction of the body 2. The first spray holes 23 and the second spray holes 24 are sequentially arranged at intervals along the length direction of the body 2, and the center line of the first spray holes 23 and the center line of the second spray holes 24 are arranged on different straight lines extending along the length direction of the body 2.

As shown in fig. 2, the bottom wall of the body 2 is also provided with a nozzle 25 for flushing the detergent on the door body of the cleaning machine, the nozzle 25 is in fluid communication with the flow passage 22, and the nozzle 25 is arranged adjacent to the end of the body 2, and an included angle is formed between the spraying direction of the nozzle 25 and the horizontal plane. The position of the spout 25 may be dependent on the position of the dispenser on the washer door for placing the detergent. There are at least two spouts 25 located on the same side or different sides of the water inlet 21. In this embodiment, two nozzles 25 are provided on both the left and right sides of the water inlet 21.

The wall of the flow passage 22 facing the water inlet 21 is provided with a flow guiding post 26 in a protruding manner, and at least the position adjacent to the end of the flow guiding post 26 forms a smooth flow guiding surface. In this embodiment, the guide post 26 has a tapered structure with a tip end facing the water inlet 21, and an outer peripheral surface of the tapered structure forms a guide surface. When water flow is input into the flow channel 22 from the water inlet 21, the water flow is firstly contacted with the guide posts 26 and is dispersed through the flow channels 22 facing the two sides, so that the water flow is prevented from directly striking the inner bottom wall of the flow channel 22 to cause water flow disorder, thereby greatly reducing fluid loss, further improving the lift and water flow of the jet water column, and improving the cleaning effect.

As shown in fig. 5, an upper bowl basket 3 and a lower bowl basket 4 are arranged in the box body 1 at intervals along the up-down direction, and a spray arm is positioned between the upper bowl basket 3 and the lower bowl basket 4. Large tableware such as cookware can be placed in the lower bowl basket 4, tableware such as cups and bowls can be placed in the upper bowl basket 3, the tableware is reasonably placed, and the placing quantity of the tableware is improved. Of course, the spray arm could also be positioned below the lower bowl basket 4.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for purposes of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and because the disclosed embodiments of the present utility model may be arranged in different orientations, these directional terms are merely for illustration and should not be construed as limitations, such as "upper", "lower" are not necessarily limited to orientations opposite or coincident with the direction of gravity.

The term "fluid communication" as used herein refers to a spatial positional relationship between two components or parts (hereinafter collectively referred to as a first part and a second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow along a flow path from the first part to the second part or/and be transported to the second part, or the first part and the second part may be directly communicated with each other, or the first part and the second part may be indirectly communicated with each other through at least one third party, and the third party may be a fluid channel such as a pipe, a channel, a conduit, a flow guiding member, a hole, a groove, or the like, or a chamber allowing the fluid to flow through, or a combination thereof.

Claims

1. A spray arm for a cleaning machine, which is provided with a body (2), wherein the body (2) is provided with a water inlet (21), a flow channel (22) communicated with the water inlet (21), and a first spray hole (23) communicated with the flow channel (22) in a fluid way; the first spray hole (23) comprises a circular hole (231) and a strip-shaped hole (232) extending outwards from the edge of the circular hole (231) in a radial direction; the method is characterized in that: the cross-sectional area of the first nozzle hole (23) gradually becomes smaller along the direction of water jet.

2. The spray arm of claim 1, wherein: an included angle between the inner wall surface of the first spray hole (23) and the vertical surface is 7-13 degrees.

3. The spray arm of claim 1, wherein: the strip-shaped holes (232) are symmetrically arranged at two sides of the round hole (231).

4. A spray arm according to claim 3, wherein: the length of the first spray hole (23) is L, and L is more than or equal to 6.5mm and less than or equal to 7.5mm; the width of the first spray hole (23) is M, and M is more than or equal to 1.0mm and less than or equal to 1.4mm; the diameter of the circular hole (231) is D, and L is more than or equal to 2.5mm and less than or equal to 3.5mm.

5. The spray arm of claim 1, wherein: the body (2) is also provided with a second spray hole (24) which is in fluid communication with the flow channel (22), and the cross section of the second spray hole (24) is circular.

6. The spray arm of claim 5, wherein: the second spray hole (24) comprises a shrinkage section (241) and a smooth section (242) which are sequentially arranged and connected along the water flow spraying direction, the shrinkage section (241) is a conical surface with gradually reduced diameter along the water flow spraying direction, and the cross section area of the smooth section (242) is unchanged.

7. The spray arm of claim 6, wherein: the included angle between the wall surface of the contraction section (241) and the vertical surface is 7-13 degrees.

8. The spray arm of any one of claims 1-7, wherein: the body (2) is substantially strip-shaped, and the flow passage (22) extends substantially along the length direction of the body (2).

9. The spray arm of any one of claims 1-7, wherein: the two sides of the water inlet (21) are respectively provided with first spray holes (23), and the number of the first spray holes (23) at the two sides of the water inlet (21) is the same or different.

10. The spray arm of any one of claims 1-7, wherein: the water inlet (21), the first spray holes (23) and the second spray holes (24) are arranged on the same wall surface of the body (2), at least one first spray hole (23) and at least one second spray hole (24) are distributed on the same side of the water inlet (21), and the second spray holes (24) are located between the first spray holes (23) and the water inlet (21).

11. The spray arm of any one of claims 1-7, wherein: the body (2) is also provided with a nozzle (25) for flushing the detergent on the door body of the cleaning machine, the nozzle (25) is in fluid communication with the flow channel (22), and the nozzle (25) is arranged adjacent to the end part of the body (2), and an included angle is formed between the spraying direction of the nozzle (25) and the horizontal plane.

12. The spray arm of claim 11, wherein: at least two of the nozzles (25) are positioned on the same side or different sides of the water inlet (21).

13. The spray arm of claim 11, wherein: the water inlet (21), the first spray hole (23) and the second spray hole (24) are all arranged on the top wall of the body (2), and the spray hole (25) is arranged on the bottom wall of the body (2).

14. The spray arm of any one of claims 1-7, wherein: a guide post (26) is convexly arranged on the wall surface of the flow channel (22) opposite to the water inlet (21), and a smooth guide surface is formed at least at the position adjacent to the end part of the guide post (26).

15. The spray arm of claim 14, wherein: the guide post (26) is a conical structure with a tip towards the water inlet (21), and the peripheral surface of the conical structure forms the guide surface.

16. A cleaning machine employing the spray arm of any one of claims 1-15, characterized by: the spraying arm comprises a box body (1), and the spraying arm is rotatably arranged in the box body (1).

17. The cleaning machine of claim 16, wherein: the upper bowl basket (3) and the lower bowl basket (4) are arranged in the box body (1) along the vertical direction at intervals, and the spray arm is positioned between the upper bowl basket (3) and the lower bowl basket (4).