Spray Arm Assembly and Dishwasher

Abstract

The present invention discloses a spray arm assembly and a dishwasher. The spray arm assembly includes a spray arm main body and a plurality of nozzles. A water flow channel communicating with a water source, a plurality of upper water outlets communicating with the water flow channel, and a plurality of lower water outlets are provided on the spray arm main body. 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 each lower water outlet are connected to a nozzle. While the spray arm assembly of the present invention realizes all-round cleaning of the upper and lower sides of the dishwasher, it can effectively simplify the pipeline of the dishwasher, making the overall occupied space of the spray arm assembly smaller, which is beneficial to the miniaturization of the dishwasher. And it can effectively enhance the spraying effect of the entire spray arm assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and particularly to a spray arm assembly and a dishwasher. Background Art

[0002] Currently, dishwashers usually have a double-layer dish basket. Generally, an upper spray arm is arranged below the upper dish basket to spray water towards the upper dish basket, and a lower spray arm is arranged below the lower dish basket to spray water towards the lower dish basket, which makes the pipeline design complex.

[0003] The above content is only used to assist in understanding the technical solution of the invention, and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main object of the present invention is to propose a spray arm assembly, aiming to simplify the pipeline of the dishwasher.

[0005] To achieve the above object, the spray arm assembly proposed by the present invention includes a spray arm main body and a plurality of nozzles;

[0006] A water flow channel communicating with a water source, a plurality of upper water outlets communicating with the water flow channel, and a plurality of lower water outlets are provided on the spray arm main body. The water outlet direction of the upper water outlet is set upward, and the water outlet direction of the lower water outlet is set downward;

[0007] Each of the upper water outlets and the lower water outlets is connected to one of the nozzles.

[0008] In one embodiment, the spray arm assembly further includes a swirl 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 swirl mechanism is arranged in the spray channel to form a swirl of the water flowing through the spray channel and then spray it out from the spray outlet.

[0009] In one embodiment, a spiral channel is formed in the swirl mechanism, or the swirl mechanism and the inner wall surface of the spray channel enclose a spiral channel. One end of the spiral channel is communicated with the spray inlet, and the other end is communicated with the spray outlet.

[0010] In one embodiment, the swirl mechanism is rotatably installed in the spray channel.

[0011] In one embodiment, the swirl mechanism can rotate around the axis of the spray channel under the drive of water flow.

[0012] In one embodiment, the swirl mechanism includes a plurality of guide vanes protruding from the inner wall surface of the spray channel. The plurality of guide vanes are arranged at intervals along the circumferential direction of the spray channel, and the extending direction of each guide vane forms an angle with the axis of the spray channel.

[0013] In one embodiment, the water flow channel includes an upper channel and a lower channel that are isolated from each other. The upper channel communicates with a plurality of the upper water outlets, and the lower channel communicates with a plurality of the lower water outlets.

[0014] In one embodiment, a first control valve is provided in the upper channel and / or a second control valve is provided in the lower channel. The first control valve is used to control the on / off of the upper channel, and the second control valve is used to control the on / off of the lower channel.

[0015] In one embodiment, the plurality of upper water outlets and the plurality of lower water outlets are arranged at intervals along the extending direction of the spray arm main body. A plurality of sets of water outlet assemblies are formed on the spray arm main body. Each set of water outlet assemblies includes an upper water outlet and a lower water outlet that are correspondingly arranged in the up-down direction.

[0016] In one embodiment, the plurality of sets of water outlet assemblies include at least one set of central water outlet assemblies and at least four sets of peripheral water outlet assemblies. The at least four sets of peripheral water outlet assemblies are arranged at intervals around the circumference of one set of central water outlet assemblies.

[0017] In one embodiment, the spray arm main body includes a first spray arm and a second spray arm. The plurality of sets of peripheral water outlet assemblies are all arranged on the first spray arm, and the central water outlet assembly is arranged on the second spray arm.

[0018] In one embodiment, the first spray arm is arranged in a U shape, and a set of the peripheral water outlet assemblies is provided at each end and corner of the first spray arm.

[0019] In one embodiment, the first spray arm of the spray arm main body is fixedly connected to the second spray arm.

[0020] In one embodiment, the nozzle forms a spraying area in its spraying direction. In the extending direction of the spray arm main body, the projections of the spraying areas of any two adjacent nozzles on the horizontal plane intersect.

[0021] The present invention also provides a dishwasher, including a spray arm assembly. The spray arm assembly includes a spray arm main body and a plurality of nozzles;

[0022] A water flow channel communicating with a water source, a plurality of upper water outlets communicating with the water flow channel, and a plurality of lower water outlets are provided on the spray arm main body. The water outlet direction of the upper water outlets is upward, and the water outlet direction of the lower water outlets is downward;

[0023] Each of the upper water outlets and the lower water outlets is connected to a nozzle.

[0024] In one embodiment, the dishwasher includes an upper cleaning basket and a lower cleaning basket. The spray arm assembly is located between the upper cleaning basket and the lower cleaning basket. The upper water outlet of the spray arm assembly sprays water towards the upper cleaning basket, and the lower water outlet of the spray arm assembly sprays water towards the lower cleaning basket.

[0025] In the spray arm assembly of the present invention, a water flow channel communicating with a water source, a plurality of upper water outlets communicating with the water flow channel, and a plurality of lower water outlets are provided on the spray arm main body, so that each upper water outlet and each lower water outlet are connected with a nozzle. Then, by only arranging one spray arm main body, it is possible to achieve all-round cleaning of the upper side and the lower side of the dishwasher. Compared with the scheme of separately cleaning the upper side and the lower side of the dishwasher by an upper spray arm and a lower spray arm, the pipeline of the dishwasher can be effectively simplified, the overall occupied space of the spray arm assembly is smaller, which is beneficial to the miniaturization of the dishwasher. And by arranging a nozzle at each upper water outlet and each lower water outlet, the water column sprayed from the upper water outlet and the lower water outlet can be made more concentrated, stable, with stronger cleaning impact force, farther spraying distance, and wider spraying range through the nozzle, thus effectively enhancing the spraying effect of the entire spray arm assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0027] Figure 1 It is a schematic structural diagram of an embodiment of the spray arm assembly of the present invention;

[0028] Figure 2 For Figure 1 the partial enlarged view at A in

[0029] Figure 3 It is a schematic structural diagram of a swirl mechanism of an embodiment of the spray arm assembly of the present invention;

[0030] Figure 4 For Figure 3 the structural diagram of the swirl mechanism from another angle in

[0031] Figure 5 It is a partial enlarged schematic view of another embodiment of the spray arm assembly of the present invention;

[0032] Figure 6 It is a schematic structural diagram of an embodiment of the dishwasher of the present invention;

[0033] Figure 7 It is a schematic structural diagram of another embodiment of the dishwasher of the present invention.

[0034] Description of the reference numerals in the drawings:

[0035]

[0036]

[0037] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0038] It should be noted that if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, such descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time.

[0039] The present invention provides a spray arm assembly, which is applied to a cleaning device. The cleaning device may specifically be a dishwasher, a vegetable washer or other devices with similar cleaning functions. Hereinafter, an example will be given by taking the spray arm assembly applied to a dishwasher.

[0040] In the embodiments of the present invention, as Figure 1 and Figure 2 shown, the spray arm assembly 100 includes a spray arm main body 110 and a plurality of nozzles 120. A water flow channel 111 communicating with a water source, a plurality of upper water outlets 112 communicating with the water flow channel 111 and a plurality of lower water outlets 113 are provided on the spray arm main body 110. The water outlet direction of the upper water outlet 112 is upward, and the water outlet direction of the lower water outlet 113 is downward. Each upper water outlet 112 and lower water outlet 113 is connected to a nozzle 120.

[0041] In this embodiment, the shape of the spray arm main body 110 can be various. It can be arranged in a long strip shape, or in a flat plate shape. Of course, it can also be other shapes. The spray arm main body 110 can be composed of one spray arm, or can be formed by the intersection of two or more spray arms. The spray arm can also be in a straight line shape or in a bent shape. Here, the shape of the spray arm main body 110 is not specifically limited. The entire spray arm main body 110 can be in a fixed state, that is, the entire spray arm main body 110 is stationary relative to the dishwasher main body. The whole or part of the spray arm main body 110 can also be in a moving state, that is, part or all of the spray arm main body 110 translates and / or rotates relative to the dishwasher main body. The water flow channel 111 provided in the spray arm main body 110 can be a straight water flow channel 111, a curved water flow channel 111, a bent water flow channel 111, or a water flow channel 111 combined with a straight line and a curve. Here, the shape of the water flow channel 111 is not specifically limited.

[0042] It should be noted that the upper and lower here are only used to explain the relative positional relationship between the upper water outlet 112 and the lower water outlet 113 of the spray arm main body 110 during use. If the use state of the spray arm main body 110 changes, then this directional indication also changes accordingly. The water outlet direction of the upper water outlet 112 is set 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 vertically upward or obliquely upward, as long as the water outlet direction of the upper water outlet forms an angle with the horizontal direction. The water outlet direction of the lower water outlet 113 is set 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 can be vertically downward or obliquely downward, as long as the water outlet direction of the lower water outlet forms an angle with the horizontal direction. In other embodiments, a plurality of horizontal water outlets can also be provided on both side surfaces in the horizontal direction of the spray arm main body 110, so that the water outlet direction of the horizontal water outlets is set in the horizontal direction, and a nozzle 120 is provided at each horizontal water outlet. In this way, the entire spray arm main body 110 can also spray water in the horizontal direction, so that the entire spray arm assembly 100 can discharge water in the up and down directions and in all horizontal directions. Only through one spray arm main body 110 can the all-round cleaning inside the dishwasher be realized, without separately setting an upper spray arm and a lower spray arm, simplifying the overall pipeline structure and improving the cleaning efficiency and effect.

[0043] The number of upper water outlets 112 and the number of lower water outlets 113 may be the same or different. The multiple upper water outlets 112 on the spray arm main body 110 may be arranged regularly or randomly, and the multiple lower water outlets 113 on the spray arm main body 110 may be arranged regularly or randomly. The multiple upper water outlets 112 and the multiple lower water outlets 113 may be all or partially correspondingly arranged in the up-down direction, or may not be correspondingly arranged. The shape and size of the upper water outlets 112 and the shape and size of the lower water outlets 113 may be the same or different. Optionally, the shape and size of the upper water outlets 112 and the lower water outlets 113 are consistent, and the upper water outlets 112 and the lower water outlets 113 are circularly arranged. In this way, the water outlet of the spray arm main body 110 in the up-down direction can be made uniform, and the water flow range sprayed by the upper water outlets 112 and the lower water outlets 113 is wider.

[0044] A nozzle 120 is provided at each of the upper water outlets 112 and the lower water outlets 113. The nozzle 120 may be integrally formed with the spray arm main body 110 or may be separately formed. When the nozzle 120 is separately formed from the spray arm main body 110, the nozzle 120 should be hermetically connected at each of the upper water outlets 112 and the lower water outlets 113. There can be many shapes and structures of the nozzle 120. For example, the nozzle 120 can be a fan-shaped nozzle 120, a spiral nozzle 120, a swirl nozzle 120, an oscillating jet nozzle 120, etc., as long as it can make the water flow from the upper water outlets 112 and the lower water outlets 113 be sprayed out more stably and concentratedly, and improve the water outlet impact force and the water outlet range. The shape and structure of the nozzle 120 are not specifically limited here. By providing a nozzle 120 at each of the upper water outlets 112 and the lower water outlets 113, the water column sprayed out from the upper water outlets 112 and the lower water outlets 113 can be made more stable and concentrated by the nozzle 120, sprayed farther, and the spraying range is wider. Then, only by providing the upper water outlets 112 and the lower water outlets 113 on the spray arm main body 110 and providing the nozzle 120 at the upper water outlets 112 and the lower water outlets 113, large-range and efficient cleaning of the upper side and the lower side of the dishwasher can be achieved, and the cleaning effect is better.

[0045] In the spray arm assembly 100 of the present invention, a water flow channel 111 communicating with a water source, a plurality of upper water outlets 112 and a plurality of lower water outlets 113 communicating with the water flow channel 111 are provided on the spray arm main body 110, so that each upper water outlet 112 and each lower water outlet 113 are connected with a nozzle 120. Then, by only arranging one spray arm main body 110, the upper side and the lower side of the dishwasher can be comprehensively cleaned. Compared with the scheme of separately cleaning the upper side and the lower side of the dishwasher by an upper spray arm and a lower spray arm, the pipeline of the dishwasher can be effectively simplified, the overall occupied space of the spray arm assembly 100 is smaller, which is beneficial to the miniaturization of the dishwasher. And by arranging a nozzle 120 at each of the upper water outlets 112 and the lower water outlets 113, the water column sprayed from the upper water outlet 112 and the lower water outlet 113 can be made more concentrated, stable, with a stronger cleaning impact force, a farther spraying distance and a wider spraying range through the nozzle 120, thus effectively enhancing the spraying effect of the entire spray arm assembly 100.

[0046] In one embodiment, please also refer to Figures 2 to 5 , the spray arm assembly 100 further includes a swirl 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. The swirl mechanism 130 is arranged in the spray channel 123 for forming a swirl of the water flow flowing through the spray channel 123 and then spraying it out from the spray outlet 122.

[0047] In this embodiment, the swirl mechanism 130 and the nozzle 120 can be integrally formed or separately formed. The swirl mechanism 130 can be fixedly installed in the nozzle 120 channel or movably installed in the spray channel 123. In order to reduce the resistance, the cross-sectional shape of the spray channel 123 is set to be circular or elliptical, and the spray channel 123 is a straight channel. The shapes and sizes of the spray inlet 121 and the upper water outlet 112 or the lower water outlet 113 can be the same, so that the spray inlet 121 is docked 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 spray inlet 121 larger than that of the upper water outlet 112 or the lower water outlet 113, so that the spray inlet 121 surrounds the upper water outlet 112 and the lower water outlet 113. In other embodiments, it is also possible to make the spray inlet 121 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 surrounds the spray inlet 121. At this time, the sealing requirement between the nozzle 120 and the spray arm main body 110 is relatively high.

[0048] The swirling mechanism 130 can specifically be a spiral vane or a blade structure. As long as the water flow is given a rotational component perpendicular to or at an angle to the axis direction of the injection channel 123 when passing through the swirling mechanism 130, so that the water flow in the injection channel 123 rotates around its flow direction and forms a swirl and then sprays out from the injection outlet 122. Here, the structure of the swirling mechanism 130 is not specifically limited. By arranging the swirling mechanism 130 in the injection channel 123 of the nozzle 120 to form a swirl of the water flow flowing through the injection channel 123 and then spraying it out from the injection outlet 122, the water in the water flow channel 111 forms a swirl and sprays out after passing through the nozzle 120. That is, the injection area 124 of the injection outlet 122 is arranged in a conical shape, similar to a vortex shape. Compared with the nozzle 120 with a fan-shaped injection area 124, its injection range is wider and the area of the injection coverage area is larger.

[0049] By arranging the swirling mechanism 130 in the injection channel 123, on the one hand, since the water column forming the swirl has a component force perpendicular to or at an angle to the axis direction of the injection channel 123, its injection range is wider, so that the cleaning coverage area of the entire spray arm assembly 100 is larger. On the other hand, compared with the water flow directly sprayed out from the upper water outlet 112 or the lower water outlet 113, the water column of the swirl is more concentrated, stable, has a stronger impact force, and a farther injection distance, and then the cleaning effect on the tableware is better.

[0050] Furthermore, as Figure 2 and Figure 5 shown, a spiral channel is formed inside the swirling mechanism 130, or the swirling mechanism 130 and the inner wall surface of the injection channel 123 enclose to form a spiral channel. One end of the spiral channel is communicated with the injection inlet 121, and the other end is communicated with the injection outlet 122.

[0051] In this embodiment, the spiral channel can be formed inside the swirling mechanism 130. Then, the swirling mechanism 130 can include a cylinder body and spiral blades fixed on the inner wall surface of the cylinder body. The spiral blades extend spirally along the extension direction of the cylinder body to form the spiral channel. The inner end of the spiral blade can be blocked or can be hollow. The spiral channel can also be formed by the swirling mechanism 130 and the inner wall surface of the injection channel 123 enclosing. Then, the swirling mechanism 130 can be a spiral rotating vane. The spiral rotating vane has a spiral section, and a swirl hole is formed inside the spiral rotating vane. By arranging the spiral rotating vane in the injection channel 123, the spiral rotating vane and the inner wall surface of the injection channel 123 can enclose to form a spiral channel. Of course, the swirling mechanism 130 can also be spiral blades fixed on the inner wall surface of the injection channel 123.

[0052] The helical channel refers to a channel that circumferentially surrounds the axis of the injection channel 123 and extends along the axial direction of the injection channel 123. By defining a helical channel within the injection channel 123, the water flows from the upper water outlet 112 and the lower water outlet 113 into the helical channel through the injection inlet 121, continuously rotates and accumulates energy within the helical channel, forms a swirling flow after flowing through the helical channel, and then forms a better vortex effect when ejected from the injection outlet 122. Thus, the injection range of the injection outlet 122 can be further increased, the impact force of the water column ejected by the nozzle 120 can be enhanced, and the overall cleaning effect can be improved.

[0053] In one embodiment, the swirling mechanism 130 is rotatably installed within the injection channel 123. The swirling mechanism 130 can also be rotatably installed within the injection channel 123 by being driven by a driving mechanism, or can rotate within the injection channel 123 by the impact of water flow. Specifically, the swirling mechanism 130 rotates around the axis of the injection channel 123. By rotatably installing the swirling mechanism 130 within the injection channel 123, on the one hand, the water flows ejected from the upper water outlet 112 and the lower water outlet 113 can be concentrated and accumulated, enhancing the impact effect of the water flow. On the other hand, the water flow can be more effectively dispersed, making the ejection area 124 of the water flow ejected from the injection outlet 122 wider and the ejection angle range larger, thereby effectively improving the cleaning coverage area of the entire spray arm assembly 100.

[0054] Furthermore, please refer to Figures 2 to 4 , the swirling mechanism 130 can rotate around the axis of the injection channel 123 under the drive of water flow.

[0055] In this embodiment, by enabling the swirling mechanism 130 to rotate around the axis of the injection channel 123 under the drive of water flow, the impact force of the water flow flowing into the injection channel 123 from the upper water outlet 112 or the lower water outlet 113 is utilized to make the swirling mechanism 130 rotate around the axis of the injection channel 123 within the injection channel 123. In this way, when the water flow enters the injection channel 123, on the one hand, a swirling flow is formed through the swirling mechanism 130, and on the other hand, the swirling mechanism 130 is pushed to rotate, diverging the water flow ejected from the injection outlet 122, and further making the range of the water flow ejected from the injection outlet 122 wider. In this way, by borrowing the impact force of the water flow entering the nozzle 120 to drive the swirling mechanism 130 to rotate, rather than additionally setting a driving mechanism to drive the swirling mechanism 130 to rotate, the cost can be saved and the overall structure can be simplified. And compared with the rotation of the entire spray arm main body 110, by only setting a swirling mechanism 130 that can be driven by water flow to rotate within the nozzle 120, the water can be ejected divergently from each upper water outlet 112 and lower water outlet 113, with strong water flow impact force, wide ejection range, simple structure, easy to control, and can effectively improve the service life of the spray arm assembly 100.

[0056] Specifically, the swirl mechanism 130 includes a baffle 131 extending in the up-down direction and extending into the injection inlet 121, a first spiral strip portion 132 and a second spiral strip portion 133 connected to the same side of the baffle 131. The first spiral strip portion 132 and the second spiral strip portion 133 are opposite and spaced apart in the flow-blocking direction of the baffle 131, and have the same spiral direction. The free ends of the first spiral strip portion 132 and the second spiral strip portion 133 are staggered in the up-down direction.

[0057] In this way, when the swirl mechanism 130 is disposed in the injection channel 123, the baffle 131 extends into the injection inlet 121. When the water from the upper water outlet 112 or the lower water outlet 113 flows into the injection inlet 121, it acts on both side surfaces of the baffle 131. Due to the water pressure difference on both sides of the baffle 131, the entire swirl mechanism 130 is driven to rotate. Subsequently, the water flow flows between the first spiral strip portion 132 and the second spiral strip portion 133 and acts on the outer wall surfaces of the first spiral strip portion 132 and the second spiral strip portion 133. Since the first spiral strip portion 132 and the second spiral strip portion 133 are opposite and spaced apart in the flow-blocking direction of the flow-blocking portion, the force of the water flow acting on the flow-blocking portion is perpendicular to the force acting on the outer side walls of the free ends of the first spiral strip portion 132 and the second spiral strip portion 133, so that the water flow can further push the swirl mechanism 130 to rotate. Then, it can be realized that the water flow continuously pushes the swirl mechanism 130 to rotate self in the injection channel 123, and through the action of the inner and outer spiral surfaces of the first spiral strip portion 132 and the second spiral strip portion 133, the water flow flowing through the injection channel 123 forms a spiral swirl. In this way, it is not necessary to rotate the entire spray arm main body 110 as a whole. Only by setting the swirl mechanism 130 that can be pushed by the water flow, each nozzle 120 can spray the water flow in all directions. Its water column has strong impact force and wide spraying range, and the structure is simple and easy to control.

[0058] In one embodiment, the swirl mechanism 130 includes a plurality of guide vanes protruding from the inner wall surface of the injection channel 123. The plurality of guide vanes are arranged at intervals along the circumferential direction of the injection channel 123, and the extending direction of each guide vane forms an angle with the axis of the injection channel 123.

[0059] In this embodiment, the flow guiding vane and the nozzle 120 can be integrally provided or separately provided. When the flow guiding vane and the nozzle 120 are separately provided, the flow guiding vane and the inner wall surface of the injection channel 123 can be fixedly connected by welding or other means. Specifically, the flow guiding vane is a swirl vane or an inclined flow vane. The inclined flow vane means that the vane extends linearly and is arranged at an angle to the axis of the injection channel 123. In order to make the swirling effect of the ejected water flow better, the flow guiding vane is preferably a swirl vane. The swirl vane means that the vane extends in a curved manner so that the air flow passing through the swirl vane forms a swirl. Then a swirl channel or an inclined flow channel is formed between two adjacent flow guiding vanes. When the water flow in the injection channel 123 passes through the flow guiding vane, a rotational component is imparted, so that the water flow ejected from the injection outlet 122 forms a swirl. By making the swirl mechanism 130 include a plurality of flow guiding vanes protruding from the inner wall surface of the injection channel 123, while the nozzle 120 can effectively eject the water flow over a large range and with strong impact, the structure is simple and easy to process and form.

[0060] In one embodiment, as Figure 1 and Figure 2 shown, the water flow channel 111 includes an upper channel 1111 and a lower channel 1112 that are isolated from each other. The upper channel 1111 is communicated with a plurality of upper water outlets 112, and the lower channel 1112 is communicated with a plurality of lower water outlets 113.

[0061] In this embodiment, by isolating the upper channel 1111 from the lower channel 1112, and the upper channel 1111 is communicated with a plurality of upper water outlets 112, and the lower channel 1112 is communicated with a plurality of lower water outlets 113, the upper channel 1111 can supply water to the plurality of upper water outlets 112 respectively, and the lower channel 1112 can supply water to the plurality of lower water outlets 113 respectively. Then, compared with the method of supplying water to a plurality of upper water outlets 112 and a plurality of lower water outlets 113 simultaneously through only one water flow channel 111, the water flow can be more concentrated, so that the water columns ejected from the upper water outlets 112 and the lower water outlets 113 are more concentrated and stable, and the spraying distance is farther and the water column cleaning effect is stronger. The upper channel 1111 and the lower channel 1112 can be respectively communicated with a water source, or can be converged and concentrated through a pipeline to be communicated with the water source. In other embodiments, it is also possible to supply water to a plurality of upper water outlets 112 and a plurality of lower water outlets 113 simultaneously by providing one water flow channel 111.

[0062] Further, a first control valve is provided in the upper channel 1111 and / or a second control valve is provided in the lower channel 1112. The first control valve is used to control the on / off of the upper channel 1111, and the second control valve is used to control the on / off of the lower channel 1112. In this way, the upper channel 1111 and the lower channel 1112 can be controlled independently, so that the user can choose to spray water from the upper water outlet 112 and / or the lower water outlet 113, that is, the user can choose upper cleaning, lower cleaning, or simultaneous upper and lower cleaning, making the dishwasher have multiple cleaning modes to meet different usage requirements of the user.

[0063] In one embodiment, please refer to Figure 1 and Figure 2 , a plurality of upper water outlets 112 and a plurality of lower water outlets 113 are arranged at intervals along the extending direction of the spray arm main body 110. A plurality of water outlet assemblies 114 are formed on the spray arm main body 110. Each water outlet assembly 114 includes an upper water outlet 112 and a lower water outlet 113 that are correspondingly arranged in the up-down direction.

[0064] In this embodiment, by correspondingly arranging the upper water outlet 112 and the lower water outlet 113 in the up-down direction, so that each corresponding upper water outlet 112 and lower water outlet 113 form a water outlet assembly 114. On the one hand, the space on the spray arm main body 110 is reasonably utilized, making the distribution positions of the upper water outlet 112 and the lower water outlet 113 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, so that the cleaning effect of the spray arm assembly 100 in the up-down direction can be ensured to be approximately the same.

[0065] In one embodiment, as Figure 6 and Figure 7 shown, the plurality of water outlet assemblies 114 include at least one central water outlet assembly 1141 and at least four peripheral water outlet assemblies 1142. The at least four peripheral water outlet assemblies 1142 are arranged at intervals around the circumferential direction of one central water outlet assembly 1141.

[0066] In this embodiment, since most of the horizontal cross-sections of current dishwashers are designed as rectangles or squares, and the rotation orbit of the spray arm is circular, spray dead zones are likely to form at the four corner positions. By arranging at least four groups of peripheral water outlet assemblies 1142 at circumferential intervals around a central water outlet assembly 1141, the combination of the four groups of peripheral water outlet assemblies 1142 and one group of central water outlet assembly 1141 can form a substantially rectangular spray area 124, thereby covering the four corner positions of the dishwasher, and further ensuring that there is no dead zone in the spraying inside the dishwasher, and enabling all-round and dead-zone-free cleaning of both the upper and lower sides of the dishwasher. Specifically, the four groups of peripheral water outlet assemblies 1142 are evenly arranged at circumferential intervals around one group of central water outlet assembly 1141. Of course, eight groups of peripheral water outlet assemblies 1142 can also be arranged around one group of central water outlet assembly 1141, or six groups of peripheral water outlet assemblies 1142 can be arranged around two groups of central water outlet assemblies 1141, as long as the overall spray area 124 is a rectangular coverage area that can cover the four corners of the dishwasher to form dead-zone-free cleaning. When the horizontal cross-section of the dishwasher is rectangular, the number of peripheral water outlet assemblies 1142 and central water outlet assemblies 1141 can be increased according to the principle of this embodiment to cover the four corner positions of the dishwasher and achieve all-round dead-zone-free cleaning, which will not be listed one by one here.

[0067] In one embodiment, please refer to Figure 1 , Figure 6 and Figure 7 , the spray arm main body 110 includes a first spray arm 115 and a second spray arm 116. Multiple groups of peripheral water outlet assemblies 1142 are all arranged on the first spray arm 115, and the central water outlet assembly 1141 is arranged on the second spray arm 116.

[0068] In this embodiment, the first spray arm 115 and the second spray arm 116 can be connected to each other or not. By arranging the central water outlet assembly 1141 on the second spray arm 116 and arranging multiple groups of peripheral water outlet assemblies 1142 on the first spray arm 115, the structure of the spray arm main body 110 can be simplified, the design of the overall pipeline and water flow channel 111 can be simplified, and the length of the spray arm main body 110 can be shortened. In other embodiments, the spray arm main body 110 can also include a first spray arm 115 and a second spray arm 116 that intersect with each other. The central water outlet assembly 1141 is arranged at the intersection of the first spray arm 115 and the second spray arm 116. One group of peripheral water outlet assemblies 1142 is respectively arranged at the two ends of the first spray arm 115, and one group of peripheral water outlet assemblies 1142 is respectively arranged at the two ends of the second spray arm 116. Of course, there are many forms of arrangement of the peripheral water outlet assemblies 1142 and the central water outlet assembly 1141 on the spray arm main body 110, which will not be listed one by one here.

[0069] Further, as Figure 7As shown, the first spray arm 115 is arranged in a U shape, and a set of peripheral water outlet assemblies 1142 are provided at the ends and corners of the first spray arm 115. By arranging the first spray arm 115 in a U shape, and providing a set of peripheral water outlet assemblies 1142 at the free end and corners of the first spray arm 115, and setting the first spray arm 115 to be circular or other shapes, the length of the first spray arm 115 can be effectively shortened, the pipeline design can be simplified, and the cost can be optimized. At this time, the second spray arm 116 can be arranged in a straight line, and the second spray arm 116 intersects and communicates with the first spray arm 115. Then, water can 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 relatively arranged first arms and a second arm connecting the two first arms, and the second spray arm 116 intersects and communicates with the second arm. In this way, when the water flow is distributed, the water flows evenly to the two first arms and the second spray arm 116, thereby ensuring the evenness of the water spraying of the multiple nozzles 120 of the entire spray arm assembly 100.

[0070] In one embodiment, the first spray arm 115 of the spray arm main body 110 is fixedly connected to the second spray arm 116. It can be understood that by fixedly connecting the first spray arm 115 to the second spray arm 116, compared with the case where the first spray arm 115 and the second spray arm 116 can rotate relative to each other, 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 overall service life of the spray arm assembly 100 can be improved. And in combination with the embodiment in which multiple sets of peripheral water outlet assemblies 1142 are all arranged on the first spray arm 115 and the central water outlet assembly 1141 is arranged on the second spray arm 116, the dishwasher can be cleaned comprehensively and without dead angles without rotating the spray arm. In other embodiments, the first spray arm 115 can also be rotated relative to the second spray arm 116, or the entire spray arm main body 110 can be rotated.

[0071] Combined with the above embodiment in which multiple sets of water outlet assemblies 114 include at least one central water outlet assembly 1141 and at least four sets of peripheral water outlet assemblies 1142, further, please refer to Figure 6 and Figure 7, the nozzle 120 forms a spraying area 124 in its spraying direction. 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. The spraying area 124 refers to the maximum spraying area that the nozzle 120 can reach when spraying towards the interior of the dishwasher. By arranging the projections of the spraying areas 124 of any two adjacent nozzles 120 on the horizontal plane to intersect 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, and the projections of the spraying areas 124 of the nozzles 120 corresponding to the adjacent lower water outlets 113 on the horizontal plane intersect. In this way, the overall combination of a set of central water outlet assemblies 1141 and peripheral water outlet assemblies 1142 can form a rectangular full-coverage area, and thus can achieve all-round and dead-angle-free cleaning of both the upper and lower sides of the dishwasher.

[0072] The present invention also provides a dishwasher, which includes a spray arm assembly 100. The specific structure of the spray arm assembly 100 refers to the above-mentioned embodiments. Since this dishwasher adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated one by one here.

[0073] In an embodiment, the dishwasher includes an upper cleaning basket 200 and a lower cleaning basket 300. The spray arm assembly 100 is located between the upper cleaning basket 200 and the lower cleaning basket 300. The upper water outlet 112 of the spray arm assembly 100 sprays water towards the upper cleaning basket 200, and the lower water outlet 113 of the spray arm assembly 100 sprays water towards the lower cleaning basket 300.

[0074] In this embodiment, the dishwasher is provided with an upper cleaning basket 200 and a lower cleaning basket 300. The upper cleaning basket 200 is located above the lower cleaning basket 300. The dishwasher has multiple layers of cleaning baskets, which can increase the capacity of cleaning tableware and meet the user's usage requirements. By arranging the spray arm assembly 100 between the upper cleaning basket 200 and the lower cleaning basket 300, and the upper water outlet 112 of the spray arm assembly 100 sprays water towards the upper cleaning basket 200, and the lower water outlet 113 of the spray arm assembly 100 sprays water towards the lower cleaning basket 300, only by using this spray arm assembly 100 can the tableware in both the upper cleaning basket 200 and the lower cleaning basket 300 be cleaned simultaneously, without the need to additionally set up an upper spray arm and a lower spray arm, thereby simplifying the pipeline design of the dishwasher and optimizing the performance and cost.

[0075] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A spray arm assembly, characterized in that, Comprising: A spray arm body, on which there are water flow channels communicated with a water source, a plurality of upper water outlets and a plurality of lower water outlets communicated with the water flow channels. The water outlet direction of the upper water outlets is upward, and the water outlet direction of the lower water outlets is downward; A plurality of nozzles, and each of the upper water outlets and the lower water outlets is connected with one of the nozzles; And A swirl 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. The swirl mechanism is arranged in the spray channel for forming a swirl of the water flowing through the spray channel and then spraying it out from the spray outlet. The swirl mechanism includes a baffle plate extending in the up-and-down direction and extending into the spray inlet, a first spiral strip portion and a second spiral strip portion connected to the same side of the baffle plate. The first spiral strip portion and the second spiral strip portion are opposite and spaced apart in the baffle direction of the baffle plate, and have the same spiral direction. The free ends of the first spiral strip portion and the second spiral strip portion are staggered in the up-and-down direction.

2. The spray arm assembly according to claim 1, wherein The swirl mechanism is rotatably installed in the spray channel.

3. The spray arm assembly according to claim 2, wherein, The swirl mechanism can be driven by water flow to rotate around the axis of the spray channel.

4. The spray arm assembly according to claim 1, characterized in that, The water flow channel includes an upper channel and a lower channel that are isolated from each other. The upper channel is communicated with a plurality of the upper water outlets, and the lower channel is communicated with a plurality of the lower water outlets.

5. The spray arm assembly according to claim 4, characterized in that, 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 to control the on-off of the upper channel, and the second control valve is used to control the on-off of the lower channel.

6. The spray arm assembly according to any one of claims 1 to 5, characterized in that A plurality of the upper water outlets and a plurality of the lower water outlets are arranged at intervals along the extending direction of the spray arm body. Multiple groups of water outlet assemblies are formed on the spray arm body. Each group of water outlet assemblies includes one upper water outlet and one lower water outlet that are correspondingly arranged in the up-and-down direction.

7. The spray arm assembly according to claim 6, wherein Multiple groups of the water outlet assemblies include at least one group of central water outlet assemblies and at least four groups of peripheral water outlet assemblies. At least four groups of the peripheral water outlet assemblies are arranged at intervals around the circumferential direction of one group of central water outlet assemblies.

8. The spray arm assembly according to claim 7, wherein The spray arm body includes a first spray arm and a second spray arm. Multiple groups of the peripheral water outlet assemblies are all arranged on the first spray arm, and the central water outlet assembly is arranged on the second spray arm.

9. The spray arm assembly according to claim 8, wherein, The first spray arm is arranged in a U shape, and one group of the peripheral water outlet assemblies is arranged at each end and corner of the first spray arm.

10. The spray arm assembly according to claim 8, characterized in that, The first spray arm of the spray arm body is fixedly connected to the second spray arm.

11. The spray arm assembly according to claim 7, wherein, The nozzle forms a spray area in its spray direction. In the extending direction of the spray arm body, the projections of the spray areas of any two adjacent nozzles on the horizontal plane intersect.

12. A dishwasher, characterized in that, Including the spray arm assembly according to any one of claims 1 to 11.

13. The dishwasher according to claim 12, characterized in that, The dishwasher includes an upper cleaning basket and a lower cleaning basket. The spray arm assembly is located between the upper cleaning basket and the lower cleaning basket. The upper water outlets of the spray arm assembly spray water towards the upper cleaning basket, and the lower water outlets of the spray arm assembly spray water towards the lower cleaning basket.

Images