CN114711696A

CN114711696A - Spray arm assembly and dish washing machine

Info

Publication number: CN114711696A
Application number: CN202110012321.3A
Authority: CN
Inventors: 赵志纯; 张强; 申杰
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2021-01-05
Filing date: 2021-01-05
Publication date: 2022-07-08

Abstract

The invention discloses a spray arm component and a dish washing machine, wherein the spray arm component comprises a spray arm main body and a plurality of nozzles; the spray arm main body is provided with a water flow channel communicated with a water source, a plurality of upper water outlets and a plurality of lower water outlets, the water outlet direction of the upper water outlets is upward, and the water outlet direction of the lower water outlets is downward; each upper water outlet and the lower water outlet are connected with a nozzle. The spray arm component can effectively simplify the pipeline of the dish washing machine while realizing the omnibearing cleaning of the upper side and the lower side of the dish washing machine, so that the overall occupied space of the spray arm component is smaller, and the miniaturization of the dish washing machine is facilitated. And the spray washing effect of the whole spray arm assembly can be effectively enhanced.

Description

Spray arm assembly and dish washing machine

Technical Field

The invention relates to the technical field of household appliances, in particular to a spray arm assembly and a dish washing machine.

Background

Present dish washer has double-deck bowl basket usually, and sets up the spray arm orientation and go up bowl basket water spray usually in the below of last bowl basket, and the spray arm orientation bowl basket water spray down under the below of bowl basket sets up, makes the pipeline design complicated.

The above is only for the purpose of assisting understanding of the technical solutions of the present invention, and does not represent an admission that the above is the prior art.

Disclosure of Invention

The main object of the present invention is to propose a spray arm assembly aimed at simplifying the piping of the dishwasher.

In order to achieve the purpose, the spray arm assembly provided by the invention comprises a spray arm main body and a plurality of nozzles;

the spray arm main body is provided with a water flow channel communicated with a water source, a plurality of upper water outlets and a plurality of lower water outlets, the water outlet direction of the upper water outlets is upward, and the water outlet direction of the lower water outlets is downward;

each upper water outlet and the lower water outlet are connected with one nozzle.

In an embodiment, the spray arm assembly further includes a swirling mechanism, the nozzle has a spray inlet, a spray outlet and a spray channel communicating the spray inlet and the spray outlet, the spray inlet is communicated with the upper water outlet or the lower water outlet, and the swirling mechanism is disposed in the spray channel and is used for forming a swirling flow of water flowing through the spray channel and then spraying the swirling flow of water out of the spray outlet.

In an embodiment, a spiral channel is formed in the swirling mechanism, or the swirling mechanism and an inner wall surface of the injection channel enclose to form a spiral channel, one end of the spiral channel is communicated with the injection inlet, and the other end of the spiral channel is communicated with the injection outlet.

In one embodiment, the swirling mechanism is rotatably mounted within the injection passage.

In one embodiment, the swirling mechanism is rotatable about the axis of the injection passage under the drive of the water flow.

In an embodiment, the swirling mechanism includes a plurality of guide vanes protruding the inner wall surface of the injection passage, the guide vanes are arranged at intervals along the circumferential direction of the injection passage, and the extending direction of each guide vane forms an included angle with the axis of the injection passage.

In an embodiment, the water flow channel includes an upper channel and a lower channel isolated from each other, the upper channel is communicated with the plurality of upper water outlets, and the lower channel is communicated with the plurality of lower water outlets.

In an embodiment, a first control valve is arranged in the upper channel and/or a second control valve is arranged in the lower channel, the first control valve is used for controlling the on-off of the upper channel, and the second control valve is used for controlling the on-off of the lower channel.

In an embodiment, the upper water outlets and the lower water outlets are arranged at intervals along an extending direction of the spray arm main body, a plurality of groups of water outlet assemblies are formed on the spray arm main body, and each group of water outlet assembly includes one upper water outlet and one lower water outlet which are correspondingly arranged in an up-down direction.

In one embodiment, the plurality of sets of water outlet assemblies include at least one set of central water outlet assembly and at least four sets of peripheral water outlet assemblies, and the at least four sets of peripheral water outlet assemblies are arranged around the central water outlet assembly as a center at intervals in the circumferential direction.

In one embodiment, the spray arm body includes a first spray arm and a second spray arm, the plurality of sets of peripheral water outlet assemblies are disposed on the first spray arm, and the central water outlet assembly is disposed on the second spray arm.

In one embodiment, the first spray arm is U-shaped, and a group of the peripheral water outlet assemblies is arranged at the end part and the corner of the first spray arm.

In an embodiment, the spray arm body is fixedly connected with the first spray arm and the second spray arm.

In one embodiment, the nozzles form a spraying area in the spraying direction, and projections of the spraying areas of any two adjacent nozzles on a horizontal plane intersect in the extending direction of the spray arm main body.

The invention also provides a dishwasher, which comprises a spray arm component, wherein the spray arm component comprises a spray arm main body and a plurality of nozzles;

In one embodiment, the dishwasher comprises an upper washing basket and a lower washing basket, the spray arm assembly is positioned between the upper washing basket and the lower washing basket, the upper water outlet of the spray arm assembly sprays water towards the upper washing basket, and the lower water outlet of the spray arm assembly sprays water towards the lower washing basket.

The spray arm assembly is provided with a water flow channel communicated with a water source, a plurality of upper water outlets and a plurality of lower water outlets, wherein the upper water outlets and the lower water outlets are communicated with the water flow channel, so that each upper water outlet and each lower water outlet are connected with a nozzle. Then only through setting up a spray arm main part alright realize carrying out the omnidirectional washing to the upside and the downside of dish washer, compare in the upside and the scheme of downside that wash dish washer respectively through last spray arm and lower spray arm, can effectively simplify the pipeline of dish washer for the whole occupation space of spray arm subassembly is littleer, is favorable to the miniaturization of dish washer. And through all being provided with a nozzle in delivery port and delivery port department down on every, then can make through this nozzle go up delivery port and delivery port spun water column more concentrate, stable down, wash the impact force stronger, jet distance is farther, and makes the spray regime wider, then can effectively strengthen the spray rinsing effect of whole spray arm subassembly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of a spray arm assembly according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic structural view of one embodiment of a swirling mechanism of the spray arm assembly of the present invention;

FIG. 4 is a schematic view of the swirl mechanism of FIG. 3 at another angle;

FIG. 5 is an enlarged partial schematic view of another embodiment of a spray arm assembly according to the present invention;

FIG. 6 is a schematic structural view of an embodiment of the dishwasher of the present invention;

FIG. 7 is a schematic structural view of another embodiment of the dishwasher of the present invention.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be noted that if the description of "first", "second", etc. is provided in the embodiment of the present invention, the description of "first", "second", etc. is only for descriptive purposes and is not to be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied.

The invention provides a spray arm assembly, which is applied to a cleaning device, wherein the cleaning device can be a dishwasher, a vegetable washer or other devices with similar cleaning functions.

In one embodiment of the present invention, as shown in fig. 1 and 2, the spray arm assembly 100 includes a spray arm body 110 and a plurality of spray nozzles 120. The spray arm body 110 is provided with a water flow passage 111 communicated with a water source, a plurality of upper water outlets 112 communicated with the water flow passage 111 and a plurality of lower water outlets 113, the water outlet direction of the upper water outlets 112 is arranged upwards, and the water outlet direction of the lower water outlets 113 is arranged downwards. One nozzle 120 is connected to each of the upper and lower water outlets 112 and 113.

In the present embodiment, the arm body 110 may have various shapes, and may be provided in a long shape, a flat shape, or other shapes. The spray arm body 110 may be formed of one spray arm, or two or more spray arms may be formed to intersect with each other, and the spray arm may be formed in a straight line shape or a bent shape, and the shape of the spray arm body 110 is not specifically limited herein. The spray arm body 110 may be fixed as a whole, i.e., the spray arm body 110 is fixed as a whole with respect to the dishwasher body. The spray arm body 110 may also be in motion, in whole or in part, i.e., the spray arm body 110 may be translated and/or rotated in part or in whole relative to the dishwasher body. The water flow channel 111 provided in the spray arm main body 110 may be a linear water flow channel 111, a curved water flow channel 111, a bent water flow channel 111, or a combination of the linear and curved water flow channels 111, and the shape of the water flow channel 111 is not particularly limited.

It should be noted that the upper and lower parts are only used to explain the relative position relationship between the upper water outlet 112 and the lower water outlet 113 when the spray arm main body 110 is in use, and if the use state of the spray arm main body 110 changes, the directional indication changes accordingly. The water outlet direction of the upper water outlet 112 is arranged upward, that is, the upper water outlet 112 sprays water upward, it can be understood that the water outlet direction of the upper water outlet 112 can also be arranged vertically upward or obliquely upward, and only the water outlet direction of the upper water outlet and the horizontal direction need to be arranged at an included angle. The water outlet direction of the lower water outlet 113 is arranged downward, that is, the lower water outlet 113 sprays water downward, it can be understood that the water outlet direction of the lower water outlet 113 may be arranged downward vertically or obliquely, and it is only necessary that the water outlet direction of the lower water outlet 113 forms an included angle with the horizontal direction. In other embodiments, a plurality of horizontal water outlets may be disposed on two lateral sides of the spray arm body 110 in the horizontal direction, so that the water outlet directions of the horizontal water outlets are disposed in the horizontal direction, and each horizontal water outlet is disposed with a nozzle 120. So, can also make whole spray arm main part 110 towards the horizontal direction water jet, then make whole spray arm subassembly 100 can all go out water in upper and lower direction, level direction all around, then only through a spray arm main part 110 alright realize the inside all-round washing of dish washer, need not separately to set up spray arm and spray arm down, simplify whole pipeline structure, promote cleaning efficiency and effect.

The number of the upper water outlets 112 and the number of the lower water outlets 113 may be the same or different. The upper water outlets 112 may be arranged on the spray arm body 110 in a certain regular manner, or may be randomly distributed, and the lower water outlets 113 may be arranged on the spray arm body 110 in a certain regular manner, or may be randomly distributed. The plurality of upper water outlets 112 and the plurality of lower water outlets 113 may be provided in correspondence with each other in all or part of the vertical direction, or may not be provided in correspondence with each other. The shape and size of the upper water outlet 112 and the shape and size of the lower water outlet 113 may be the same or different. Optionally, the upper water outlet 112 and the lower water outlet 113 have the same shape and size, and the upper water outlet 112 and the lower water outlet 113 are arranged in a circle. Therefore, the water outlet of the spray arm main body 110 in the vertical direction is uniform, and the water flow sprayed from the upper water outlet 112 and the lower water outlet 113 is wider.

A nozzle 120 is disposed at each of the upper water outlet 112 and the lower water outlet 113, and the nozzle 120 may be integrally formed with the spray arm body 110 or may be separately formed. When the nozzle 120 is formed separately from the spray arm body 110, the nozzle 120 should be sealingly connected to each of the upper water outlet 112 and the lower water outlet 113. The shape and structure of the nozzle 120 may be various, for example, the nozzle 120 may be a fan-shaped nozzle 120, a spiral nozzle 120, a swirl nozzle 120, an oscillating jet nozzle 120, etc., and only the water flow of the upper water outlet 112 and the lower water outlet 113 needs to be ejected more stably and intensively, so as to improve the water outlet impact force and the water outlet range, and the shape and structure of the nozzle 120 are not specifically limited herein. By arranging one nozzle 120 at each of the upper water outlet 112 and the lower water outlet 113, the water columns sprayed by the water at the upper water outlet 112 and the water at the lower water outlet 113 can be more stable and concentrated through the nozzle 120, the spraying is farther, and the spraying range is wider. The upper and lower sides of the dish washer can be washed efficiently in a large range only by providing the upper and lower water outlets 112 and 113 on the spray arm body 110 and the spray nozzles 120 at the upper and lower water outlets 112 and 113, and the washing effect is better.

The spray arm assembly 100 of the present invention has a water passage 111 communicating with a water source, a plurality of upper water outlets 112 communicating with the water passage 111, and a plurality of lower water outlets 113 on the spray arm body 110, so that each of the upper water outlets 112 and the lower water outlets 113 is connected to a nozzle 120. Then only through setting up a spray arm main part 110 alright realize carrying out the omnidirectional washing to the upside and the downside of dish washer, compare in washing the upside and the scheme of downside of dish washer respectively through last spray arm and lower spray arm, can effectively simplify the pipeline of dish washer for spray arm subassembly 100's whole occupation space is littleer, is favorable to the miniaturization of dish washer. And all be provided with a nozzle 120 through delivery port 112 and delivery port 113 department down on every, then can make delivery port 112 and delivery port 113 spun water column more concentrated, stable down through this nozzle 120, wash the impact force stronger, jet distance is farther, and makes the spray regime wider, then can effectively strengthen the spray cleaning effect of whole spray arm subassembly 100.

In an embodiment, referring to fig. 2 to 5 together, the spray arm assembly 100 further includes a swirling mechanism 130, the nozzle 120 has a spray inlet 121, a spray outlet 122 and a spray channel 123 communicating the spray inlet 121 and the spray outlet 122, the spray inlet 121 is communicated with the upper water outlet 112 or the lower water outlet 113, and the swirling mechanism 130 is disposed in the spray channel 123 for swirling water flowing through the spray channel 123 and then spraying out from the spray outlet 122.

In the present embodiment, the swirling mechanism 130 and the nozzle 120 may be integrally formed or may be separately formed. The swirling mechanism 130 may be fixedly installed in the passage of the nozzle 120 or movably installed in the injection passage 123. In order to reduce the resistance, the cross-sectional shape of the injection channel 123 is set to be circular or elliptical, and the injection channel 123 is a straight channel. The shape and size of the injection inlet 121 and the upper water outlet 112 or the lower water outlet 113 may be identical, such that the injection inlet 121 is butted and communicated with the upper water outlet 112 or the lower water outlet 113. Of course, it is also possible to make the size of the injection inlet 121 larger than the size of the upper water outlet 112 or the lower water outlet 113, so that the injection inlet 121 surrounds the upper water outlet 112 and the lower water outlet 113. In other embodiments, the injection inlet 121 may be smaller than the upper water outlet 112 or the lower water outlet 113, and the upper water outlet 112 or the lower water outlet 113 is disposed around the injection inlet 121, so that the sealing requirement between the nozzle 120 and the spray arm body 110 is high.

The swirling mechanism 130 may be a spiral piece or a vane structure, and only needs to be imparted with a rotational component perpendicular to or forming an included angle with the axial direction of the injection channel 123 when water flows through the swirling mechanism 130, so that the water flow in the injection channel 123 rotates around the flowing direction thereof to form a swirling flow and then is ejected from the ejection outlet 122, and the structure of the swirling mechanism 130 is not specifically limited herein. By providing the swirling mechanism 130 in the injection passage 123 of the nozzle 120 for swirling the water flow flowing through the injection passage 123 and then ejecting the water flow from the injection outlet 122, the water in the water passage 111 is ejected as swirling flow through the nozzle 120. That is, the injection region 124 of the injection outlet 122 is disposed in a conical shape, like a vortex, and has a wider injection range and a larger injection coverage area than the nozzle 120 of the fan-shaped injection region 124.

Through set up whirl mechanism 130 in injection passage 123, on the one hand because the water column that forms the whirl has the axis direction perpendicular with injection passage 123 or the component of being the contained angle, makes its spray regime wider to whole spray arm subassembly 100's washing coverage area is bigger, and on the other hand the water column of whirl is compared in the rivers of direct follow last delivery port 112 or lower delivery port 113 spun, and its water column is more concentrated, stable, and the impact force is stronger, and jet distance is farther, then better to the cleaning performance of tableware.

Further, as shown in fig. 2 and 5, a spiral passage is formed in the swirling mechanism 130, or the swirling mechanism 130 and an inner wall surface of the injection passage 123 enclose to form a spiral passage, one end of which communicates with the injection inlet 121 and the other end communicates with the injection outlet 122.

In the present embodiment, a spiral passage may be formed by the inside of the swirling mechanism 130. The swirling mechanism 130 may be made to include a cylindrical body and a helical blade fixed to an inner wall surface of the cylindrical body, the helical blade extending helically in the extending direction of the cylindrical body to form the helical passage. The inner end of the helical blade can be plugged and also can be arranged in a hollow way. The swirling mechanism 130 may surround the inner wall surface of the injection passage 123 to form a spiral passage. The swirl mechanism 130 may be a spiral blade having a spiral section and a swirl hole formed inside the spiral blade, so that the spiral blade is disposed in the injection passage 123 to form a spiral passage surrounded by the spiral blade and the inner wall surface of the injection passage 123. Of course, the swirling mechanism 130 may be a helical blade fixed to the inner wall surface of the injection passage 123.

The spiral channel means that the channel is arranged around the circumference of the axis of the injection channel 123 and extends in the axial direction of the injection channel 123. By defining the spiral channel in the injection channel 123, the water flow of the upper water outlet 112 and the lower water outlet 113 enters the spiral channel from the injection inlet 121, continuously rotates in the spiral channel to accumulate force, forms a rotational flow after flowing through the spiral channel, and forms a vortex after being injected from the injection outlet 122. Thereby further increasing the spraying range of the spraying outlet 122, improving the impact force of the water column sprayed by the nozzle 120 and improving the overall cleaning effect.

In one embodiment, the swirling mechanism 130 is rotatably mounted within the injection passage 123. The swirling mechanism 130 may be rotatably installed in the injection passage 123 by being driven by a driving mechanism, or may be rotated in the injection passage 123 by the impact of the water flow. Specifically, the swirling mechanism 130 rotates about the axis of the injection passage 123. Through making whirl mechanism 130 rotationally install in injection passage 123, then can concentrate on the one hand to last delivery port 112 and lower delivery port 113 spun rivers and hold up power, the impact effect of reinforcing rivers, on the other hand can more effectively break up rivers for by the spray zone 124 of the spout 122 spun rivers wider, the spray angle scope is bigger, thereby can effectively promote whole spray arm subassembly 100's washing coverage area.

Further, referring to fig. 2 to 4, the swirling mechanism 130 can rotate around the axis of the spraying channel 123 under the driving of the water flow.

In the present embodiment, the rotational flow mechanism 130 is driven by the water flow to rotate around the axis of the injection channel 123, and the rotational flow mechanism 130 is driven by the impact force flowing from the upper water outlet 112 or the lower water outlet 113 into the injection channel 123 to rotate around the axis of the injection channel 123 in the injection channel 123. Thus, after the water flow enters the injection channel 123, a rotational flow is formed through the rotational flow mechanism 130 on the one hand, and the rotational flow mechanism 130 is pushed to rotate on the other hand, so that the water flow sprayed from the injection outlet 122 is dispersed, and the water flow sprayed from the injection outlet 122 is wider in range. Thus, the rotational flow mechanism 130 is driven to rotate by the impact force of the water flowing into the nozzle 120, and the rotational flow mechanism 130 does not need to be driven to rotate by an additional driving mechanism, so that the cost can be saved, and the overall structure can be simplified. Compared with the rotation of the whole spray arm main body 110, the rotation of the rotational flow mechanism 130 driven by water flow is only arranged in the nozzle 120, so that the water spray can be dispersed from each of the upper water outlet 112 and the lower water outlet 113, the water flow impact force is strong, the spray range is wide, the structure is simple, the control is easy, and the service life of the spray arm assembly 100 can be effectively prolonged.

Specifically, the swirling mechanism 130 includes a baffle plate 131 extending in the vertical direction and extending into the injection inlet 121, and a first helical portion 132 and a second helical portion 133 connected to the same side of the baffle plate 131, the first helical portion 132 and the second helical portion 133 are disposed opposite to each other in the flow blocking direction of the baffle plate 131 at an interval, and the first helical portion 132 and the second helical portion 133 have the same helical direction, and the free ends of the first helical portion 132 and the second helical portion 133 are disposed in a vertically offset manner.

Thus, when the swirling mechanism 130 is disposed in the injection passage 123, the baffle plate 131 extends into the injection inlet 121, and when water from the upper water outlet 112 or the lower water outlet 113 flows into the injection inlet 121, the water acts on two sides of the baffle plate 131, and the entire swirling mechanism 130 is driven to rotate due to the water flow pressure difference between two sides of the baffle plate 131. Then the water flow flows to between the first helical portion 132 and the second helical portion 133 and acts on the outer wall surfaces of the first helical portion 132 and the second helical portion 133, and because the first helical portion 132 and the second helical portion 133 are arranged oppositely and at intervals in the flow blocking direction of the flow blocking portion, the force of the water flow acting on the flow blocking portion is made to be perpendicular to the force acting on the outer side walls of the free ends of the first helical portion 132 and the second helical portion 133, and the water flow can further push the rotational flow mechanism 130 to rotate. It is possible to realize that the swirling mechanism 130 is continuously pushed by the water flow to rotate in the injection channel 123, and the water flow flowing through the injection channel 123 forms a spiral swirling flow by the action of the inner and outer helical surfaces of the first helical portion 132 and the second helical portion 133. Therefore, the whole spray arm main body 110 does not need to rotate integrally, and only the rotational flow mechanism 130 which can be pushed by water flow is arranged, so that each spray nozzle 120 can disperse and spray water flow all around, and the spray arm is strong in water column impact force, wide in spray range, simple in structure and easy to control.

In an embodiment, the swirling mechanism 130 includes a plurality of guide vanes protruding the inner wall surface of the injection passage 123, the guide vanes are arranged at intervals along the circumferential direction of the injection passage 123, and the extending direction of each guide vane forms an included angle with the axis of the injection passage 123.

In this embodiment, the guide vane and the nozzle 120 may be integrally or separately provided, and when the guide vane and the nozzle 120 are separately provided, the guide vane and the inner wall surface of the injection passage 123 may be fixedly connected by welding or the like. Specifically, the guide vanes are swirl vanes or oblique flow vanes. Diagonal flow vanes refer to vanes extending linearly and disposed at an angle to the axis of the injection channel 123. In order to make the sprayed water flow form a swirl better, the guide vane is preferably a swirl vane. The swirl vanes refer to blades extending in a curve so that the air flow passing through the swirl vanes forms a swirl. A swirling flow channel or a diagonal flow channel is formed between the adjacent two guide vanes, and when the water flow in the injection channel 123 passes through the guide vanes, a rotational component is imparted to the water flow, so that the water flow ejected from the injection outlet 122 forms a swirling flow. Through making whirl mechanism 130 include a plurality of guide vanes that the protrusion sprays passageway 123 internal wall face and set up, when making nozzle 120 can be effectively with the eruption of rivers on a large scale and strong impact, simple structure, easily machine-shaping.

In one embodiment, as shown in fig. 1 and 2, the water flow channel 111 includes an upper channel 1111 and a lower channel 1112 which are isolated from each other, the upper channel 1111 is communicated with the plurality of upper water outlets 112, and the lower channel 1112 is communicated with the plurality of lower water outlets 113.

In this embodiment, by isolating the upper channel 1111 from the lower channel 1112, and communicating the upper channel 1111 with the plurality of upper water outlets 112 and communicating the lower channel 1112 with the plurality of lower water outlets 113, the upper channel 1111 can supply water to the plurality of upper water outlets 112 and the lower channel 1112 can supply water to the plurality of lower water outlets 113. Compared with a mode of supplying water to the plurality of upper water outlets 112 and the plurality of lower water outlets 113 through one water flow channel 111, the water flow can be concentrated, so that water columns jetted from the upper water outlets 112 and the lower water outlets 113 are concentrated and stable, the jetting distance is longer, and the water column cleaning effect is stronger. The upper channel 1111 and the lower channel 1112 may be separately connected to the water source or may be connected to the water source by a pipeline. In other embodiments, a water flow channel 111 may be provided to supply water to the plurality of upper water outlets 112 and the plurality of lower water outlets 113 at the same time.

Furthermore, a first control valve is arranged in the upper channel 1111 and/or a second control valve is arranged in the lower channel 1112, the first control valve is used for controlling the on-off of the upper channel 1111, and the second control valve is used for controlling the on-off of the lower channel 1112. Therefore, the upper channel 1111 and the lower channel 1112 can be controlled independently, so that a user can select the upper water outlet 112 and/or the lower water outlet 113 to spray water, and also can select upper cleaning, lower cleaning or simultaneous upper and lower cleaning, so that the dishwasher has multiple cleaning modes and meets different use requirements of the user.

In an embodiment, referring to fig. 1 and 2, a plurality of upper water outlets 112 and a plurality of lower water outlets 113 are disposed at intervals along an extending direction of the spray arm main body 110, a plurality of sets of water outlet assemblies 114 are formed on the spray arm main body 110, and each set of water outlet assemblies 114 includes an upper water outlet 112 and a lower water outlet 113 disposed in an up-down direction.

In this embodiment, the upper water outlet 112 and the lower water outlet 113 are correspondingly arranged in the up-down direction, so that each corresponding upper water outlet 112 and lower water outlet 113 form a group of water outlet assemblies 114, on one hand, the space on the spray arm main body 110 is reasonably utilized, the distribution positions of the upper water outlet 112 and the lower water outlet 113 are more uniform, on the other hand, the positions of the upper water outlet 112 and the lower water outlet 113 are made to correspond as much as possible, and the spray arm assembly 100 can be ensured to have substantially the same cleaning effect in the up-down direction.

In one embodiment, as shown in fig. 6 and 7, the plurality of sets of water outlet assemblies 114 includes at least one set of central water outlet assembly 1141 and at least four sets of peripheral water outlet assemblies 1142, and the at least four sets of peripheral water outlet assemblies 1142 are arranged around the set of central water outlet assembly 1141 at intervals in the circumferential direction.

In the present embodiment, since most of the horizontal cross section of the current dishwasher is rectangular or square, and the rotation orbit of the spray arm is circular, the spray dead angle is easily formed at four angular positions. Through making four at least groups of peripheral water components 1142 use a set of center to go out water component 1141 and as the mode that its circumference interval was arranged around its circumference in the center, then four groups of peripheral water components 1142 and the mode of a set of center play water component 1141 can form the injection region 124 that is roughly the rectangle to can cover four angular position of dish washer, and then can guarantee the no dead angle of injection in the dish washer, and can all realize the washing in all-round, no dead angle to the upper and lower side of dish washer simultaneously. Specifically, four sets of peripheral water outlet assemblies 1142 are uniformly spaced around the circumference of one set of central water outlet assembly 1141. Of course, eight groups of peripheral water outlet assemblies 1142 can surround one group of central water outlet assemblies 1141, and six groups of peripheral water outlet assemblies 1142 surround two groups of central water outlet assemblies 1141, so that the whole spraying area 124 is only required to be a rectangular covering area, four corners of the dishwasher can be covered, and no dead angle is formed for cleaning. When the horizontal section of the dish washing machine is rectangular, the number of the peripheral water outlet assemblies 1142 and the number of the central water outlet assemblies 1141 can be increased according to the principle of the embodiment so as to cover four corner positions of the dish washing machine, so that all-dimensional dead-angle-free cleaning is realized, and the horizontal section is not listed one by one

In an embodiment, referring to fig. 1, 6 and 7, the spray arm body 110 includes a first spray arm 115 and a second spray arm 116, a plurality of sets of peripheral water outlet assemblies 1142 are disposed on the first spray arm 115, and a central water outlet assembly 1141 is disposed on the second spray arm 116.

In this embodiment, the first spray arm 115 and the second spray arm 116 may or may not be in communication with each other. By arranging the central water outlet assembly 1141 on the second spray arm 116 and the plurality of sets of peripheral water outlet assemblies 1142 on the first spray arm 115, the structure of the spray arm body 110 can be simplified, the design of the whole pipeline and the water flow channel 111 can be simplified, and the length of the spray arm body 110 can be shortened. In other embodiments, the spray arm body 110 may also include a first spray arm 115 and a second spray arm 116 that intersect with each other, a central water outlet assembly 1141 is disposed at the intersection of the first spray arm 115 and the second spray arm 116, a set of peripheral water outlet assemblies 1142 is disposed at two ends of the first spray arm 115, and a set of peripheral water outlet assemblies 1142 is disposed at two ends of the second spray arm 116. Of course, there are many other arrangements of the peripheral water outlet assembly 1142 and the central water outlet assembly 1141 on the spray arm body 110, which are not illustrated herein.

Further, as shown in fig. 7, the first spray arm 115 is U-shaped, and a set of peripheral water outlet assemblies 1142 are disposed at the end and the corner of the first spray arm 115. By making the first spray arm 115 be U-shaped, a set of peripheral water outlet assembly 1142 is disposed at the free end and corner of the first spray arm 115, and the first spray arm 115 is set to be similar to a circle or other shapes, so that the length of the first spray arm 115 can be effectively shortened, the pipeline design is simplified, and the cost is optimized. At this time, the second spray arm 116 may be linearly disposed, and the second spray arm 116 and the first spray arm 115 are intersected and communicated with each other. The water may be uniformly supplied from the water source to the first spray arm 115 and the second spray arm 116. Optionally, the first spray arm 115 includes two oppositely disposed first arms and a second arm connecting the two first arms, and the second spray arm 116 and the second arm are intersected and communicated with each other. Thus, the water flow distribution is uniform to the two first and second spray arms 116, and the water spray uniformity of the plurality of nozzles 120 of the whole spray arm assembly 100 is ensured.

In one embodiment, the spray arm body 110 has a first spray arm 115 fixedly connected to a second spray arm 116. It can be understood that, by fixedly connecting the first spray arm 115 and the second spray arm 116, compared with the case that the first spray arm 115 and the second spray arm 116 are relatively rotatable, the risk of water leakage at the connection between the first spray arm 115 and the second spray arm 116 can be avoided, and the service life of the whole spray arm assembly 100 can be prolonged. And the embodiment that a plurality of groups of peripheral water outlet assemblies 1142 are arranged on the first spray arm 115 and the central water outlet assembly 1141 is arranged on the second spray arm 116 is combined, so that the dish washing machine can be cleaned in all directions without dead angles under the condition that the spray arms do not need to rotate. In other embodiments, the first spray arm 115 may be rotated relative to the second spray arm 116, or the entire spray arm body 110 may be rotated.

In combination with the above-mentioned embodiment in which the plurality of sets of water outlet assemblies 114 include at least one set of central water outlet assembly 1141 and at least four sets of peripheral water outlet assemblies 1142, further, referring to fig. 6 and 7, the nozzles 120 form the spraying areas 124 in the spraying direction thereof, and in the extending direction of the spray arm main body 110, the projections of the spraying areas 124 of any two adjacent nozzles 120 on the horizontal plane intersect with each other. The spray area 124 refers to the maximum spray area 124 that can be reached by the spray nozzles 120 spraying into the interior of the dishwasher. By arranging the projections of the spraying areas 124 of any two adjacent nozzles 120 on the horizontal plane in an intersecting manner in the extending direction of the spray arm main body 110, that is, the projections of the spraying areas 124 of the nozzles 120 corresponding to the adjacent upper water outlets 112 on the horizontal plane intersect, the projections of the spraying areas 124 of the nozzles 120 corresponding to the adjacent lower water outlets 113 on the horizontal plane intersect. Therefore, the set of central water outlet assembly 1141 and the peripheral water outlet assembly 1142 can integrally form a rectangular overall coverage area, and accordingly all-dimensional and dead-angle-free cleaning can be achieved on the upper side and the lower side of the dish washing machine.

The invention further provides a dishwasher, which comprises a spray arm assembly 100, the specific structure of the spray arm assembly 100 refers to the above embodiments, and the dishwasher adopts all technical solutions of all the above embodiments, so that at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

In one embodiment, the dishwasher includes an upper wash basket 200 and a lower wash basket 300, the spray arm assembly 100 is located between the upper wash basket 200 and the lower wash basket 300, the upper water outlet 112 of the spray arm assembly 100 sprays water toward the upper wash basket 200, and the lower water outlet 113 of the spray arm assembly 100 sprays water toward the lower wash basket 300.

In this embodiment, the dishwasher is provided with the upper cleaning basket 200 and the lower cleaning basket 300, the upper cleaning basket 200 is positioned above the lower cleaning basket 300, and the dishwasher is provided with the multilayer cleaning baskets, so that the capacity of cleaning dishes can be increased, and the use requirement of a user can be met. Through making spray arm subassembly 100 be located between upper cleaning basket 200 and lower cleaning basket 300, and spray arm subassembly 100's last delivery port 112 is towards upper cleaning basket 200 water spray, spray arm subassembly 100's lower delivery port 113 is towards lower cleaning basket 300 water spray, then only adopt this spray arm subassembly 100 alright realize washing the tableware in upper cleaning basket 200 and lower cleaning basket 300 simultaneously, need not additionally to set up spray arm and spray arm down, thereby can simplify the piping design of dish washer, make performance and cost optimization.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A spray arm assembly, comprising:

the spray arm comprises a spray arm main body, wherein a water flow channel communicated with a water source, a plurality of upper water outlets and a plurality of lower water outlets are formed in the spray arm main body, the upper water outlets are communicated with the water flow channel, the water outlet direction of the upper water outlets is upward, and the water outlet direction of the lower water outlets is downward; and

and each of the upper water outlet and the lower water outlet is connected with one nozzle.

2. The spray arm assembly of claim 1, further comprising a swirling mechanism, wherein the nozzle has a spray inlet, a spray outlet and a spray passage connecting the spray inlet and the spray outlet, the spray inlet is connected to the upper water outlet or the lower water outlet, and the swirling mechanism is disposed in the spray passage for swirling a water stream flowing through the spray passage and then spraying the water stream from the spray outlet.

3. The spray arm assembly of claim 2, wherein a spiral channel is formed in the swirling mechanism, or the swirling mechanism and an inner wall surface of the injection channel enclose to form a spiral channel, one end of the spiral channel is communicated with the injection inlet, and the other end of the spiral channel is communicated with the injection outlet.

4. The spray arm assembly of claim 3, wherein the swirling mechanism is rotatably mounted within the spray passage.

5. The spray arm assembly of claim 4 wherein said swirling mechanism is rotatable about the axis of said spray passage under the influence of water flow.

6. The spray arm assembly of claim 2, wherein the swirling mechanism includes a plurality of guide vanes protruding from an inner wall surface of the injection passage, the plurality of guide vanes are arranged at intervals along a circumferential direction of the injection passage, and an extending direction of each guide vane is arranged at an angle to an axis of the injection passage.

7. The spray arm assembly of claim 1, wherein said water flow passage comprises an upper passage and a lower passage isolated from each other, said upper passage communicating with said plurality of upper water outlets and said lower passage communicating with said plurality of lower water outlets.

8. The spray arm assembly of claim 7, wherein a first control valve is disposed in the upper channel and/or a second control valve is disposed in the lower channel, the first control valve is configured to control the opening and closing of the upper channel, and the second control valve is configured to control the opening and closing of the lower channel.

9. The spray arm assembly of any one of claims 1 to 8, wherein the plurality of upper water outlets and the plurality of lower water outlets are arranged at intervals along an extending direction of the spray arm body, a plurality of sets of water outlet assemblies are formed on the spray arm body, and each set of water outlet assembly comprises one upper water outlet and one lower water outlet which are correspondingly arranged in an up-down direction.

10. The spray arm assembly of claim 9 wherein said plurality of sets of said water exit assemblies includes at least one central set of water exit assemblies and at least four sets of peripheral water exit assemblies, said at least four sets of said peripheral water exit assemblies being spaced circumferentially about said central set of water exit assemblies.

11. The spray arm assembly of claim 10, wherein the spray arm body comprises a first spray arm and a second spray arm, wherein the plurality of sets of peripheral water outlet assemblies are disposed on the first spray arm, and the central water outlet assembly is disposed on the second spray arm.

12. The spray arm assembly of claim 11 wherein said first spray arm is U-shaped, said first spray arm having a set of said peripheral water outlet assemblies at each of an end and a corner thereof.

13. The spray arm assembly of claim 11 wherein said spray arm body said first spray arm is fixedly attached to said second spray arm.

14. The spray arm assembly of claim 10, wherein the spray nozzles form a spray area in the spray direction thereof, and projections of the spray areas of any two adjacent spray nozzles on a horizontal plane intersect in the extension direction of the spray arm body.

15. A dishwasher, comprising a spray arm assembly as claimed in any one of claims 1 to 14.

16. The dishwasher of claim 15, comprising an upper wash basket and a lower wash basket, the spray arm assembly being located between the upper wash basket and the lower wash basket, the upper water outlet of the spray arm assembly spraying water toward the upper wash basket and the lower water outlet of the spray arm assembly spraying water toward the lower wash basket.