Spray structure

Abstract

The present invention provides a spraying structure. The spraying structure includes a spray head, the spray head is provided with a body, an inner cavity located inside the body, and a nozzle communicated with the inner cavity. The spray head further includes a central axis arranged in the inner cavity and connected to the body, and a plurality of vortex blades arranged on the central axis. With such a setting, the spraying structure of the present invention sets the spray head on the base through a limiting structure, effectively expanding the spraying range of the base, achieving the effect of no dead angle in washing, and being able to solve the problem of incomplete washing of the tableware surface.

Description

Technical Field

[0001] The present invention relates to the technical field of dishwashers, and particularly to a spraying structure. Background Art

[0002] With the continuous improvement of people's living standards, dishwashers are increasingly widely used in households. The working principle of current dishwashers on the market is as follows: Water is used to wash tableware and kitchen utensils, and combined with the chemical action of detergents and the action of high temperature to promote the shedding of stains, the cleaning of tableware is achieved. Therefore, the spraying structure of a dishwasher is its most core structure. The current spraying structures of dishwashers generally adopt the method of opening holes on the spray arm, and the angles of the spray holes are fixed. When the spray arm rotates and washes under the reaction force of water flow, the spraying area of the water flow from the spray holes is always fixed and cannot cover the entire surface of the tableware, resulting in washing dead corners, easy to cause incomplete washing and stain residues.

[0003] Therefore, it is necessary to provide a new spraying structure to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a spraying structure that can improve the washing rate.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A spraying structure includes a spray head, the spray head is provided with a body, an inner cavity located inside the body, and a nozzle communicating with the inner cavity. The spraying structure further includes a central axis disposed in the inner cavity and connected to the body, and a plurality of vortex blades disposed on the central axis.

[0007] As a further improved technical solution of the present invention, the top of the spray head is provided with a plurality of the nozzles and a protruding portion, and the protruding portion is a conical structure.

[0008] As a further improved technical solution of the present invention, the spraying structure includes a base, the base has a cavity, the spray head is disposed on the base, and the inner cavity communicates with the cavity.

[0009] As a further improved technical solution of the present invention, the base is a spray arm, the spraying structure further includes a limiting structure for limiting the spray head on the spray arm. The spray arm includes an arm body and an installation opening penetrating the arm body and communicating with the cavity, and the spray head is movably installed in the installation opening.

[0010] As a further improved technical solution of the present invention, the limiting structure is provided with a concave portion, and the concave portion cooperates with the protruding portion.

[0011] As a further improved technical solution of the present invention, the limiting structure includes a support rod fixedly arranged on the arm body and a limiting part connected to the support rod. The concave part is recessed on the limiting part, and the convex part is located below the concave part.

[0012] As a further improved technical solution of the present invention, an outwardly protruding sealing part is provided on the outer periphery of the bottom of the nozzle, and the sealing part abuts against the inner wall of the mounting opening.

[0013] As a further improved technical solution of the present invention, water outlets are respectively arranged at both ends of the spray arm, and the water outlet directions of the water outlets are opposite.

[0014] As a further improved technical solution of the present invention, the spray arm is provided with a water inlet end, and the water outlet, the mounting opening and the water inlet end are communicated through the cavity.

[0015] Compared with the prior art, the spray structure of the present invention arranges the rotatable nozzle on the base through the limiting structure, effectively expanding the spray range of the base, achieving the effect of no dead angle in washing, and solving the problem of incomplete washing of the tableware surface. Description of the Drawings

[0016] Figure 1 is a three-dimensional schematic diagram of the spray structure of the present invention;

[0017] Figure 2 is Figure 1 a three-dimensional schematic diagram of the spray structure from another angle;

[0018] Figure 3 is Figure 1 a three-dimensional exploded schematic diagram of the spray structure;

[0019] Figure 4 is Figure 1 a front view schematic diagram of the spray structure;

[0020] Figure 5 is Figure 4 a partial enlarged schematic diagram within the dashed box;

[0021] Figure 6 is along Figure 1 a partial enlarged sectional view taken along the D-D line in ;

[0022] Figure 7 is a bottom view schematic diagram of the limiting structure of the spray structure;

[0023] Figure 8 is a three-dimensional schematic diagram of the nozzle;

[0024] Figure 9 is a three-dimensional schematic diagram of the nozzle from another angle;

[0025] Figure 10 It is a schematic side view of the nozzle;

[0026] Figure 11 along Figure 10 the schematic sectional view taken along line A-A in

[0027] Reference numerals:

[0028] Spray arm - 1; Arm body - 11; Cavity - 12; Mounting port - 13; Water outlet - 14; Water inlet end - 15; Nozzle - 2; Body - 20; Protrusion - 21; Nozzle - 22; Sealing part - 23; Inner cavity - 24; Vortex blade - 25; Central axis - 26; Limit structure - 3; Concave part - 31; Support rod - 32; Limit part - 33. Specific embodiments

[0029] The following will describe in detail the exemplary specific embodiments of the present invention with reference to the drawings. If there are several specific embodiments, the features in these embodiments can be combined with each other without conflict. When the description involves the drawings, unless otherwise specified, the same numbers in different drawings represent the same or similar elements. The content described in the following exemplary specific embodiments does not represent all embodiments consistent with the present invention; on the contrary, they are only examples of devices, products, and / or methods consistent with some aspects of the present invention as recorded in the claims of the present invention.

[0030] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the protection scope of the present invention. The singular forms "a", "the", or "said" used in the specification and claims of the present invention are also intended to include the plural forms unless the context clearly indicates otherwise.

[0031] It should be understood that the terms such as "first", "second", and similar words used in the specification and claims of the present invention do not represent any order, quantity, or importance, but are only used to distinguish the named features. Similarly, words such as "a" or "one" do not represent a quantity limitation, but indicate the existence of at least one. Unless otherwise indicated, the terms such as "front", "rear", "upper", "lower", etc. used in the present invention are only for convenience of description and are not limited to a specific position or a specific spatial orientation. The expression "including" or "comprising" and similar words are an open-ended expression, meaning that the elements appearing before "including" or "comprising" cover the elements appearing after "including" or "comprising" and their equivalents, and this does not exclude that the elements appearing before "including" or "comprising" may also include other elements. If "several" appears in the present invention, it means two or more.

[0032] Please refer Figures 1 to 11As shown, the present invention provides a dishwasher (not shown), in which a spray structure is provided for cleaning dishes in the dishwasher. The spray structure comprises a base 1, a plurality of spray heads 2 with vortex blades 26 mounted on the base 1, and a limiting structure 3 for limiting the spray heads 2 on the base 1. In this embodiment, the base 1 is a spray arm.

[0033] Please refer to Figure 3 and Figure 6 As shown, the spray arm 1 includes a straight-line arm body 11, a cavity 12 disposed in the arm body 11, and a plurality of mounting openings 13 penetrating the arm body 11 and communicating with the cavity 12, and a plurality of spray heads 2 are correspondingly and movably mounted in each mounting opening 13. In this embodiment, the spray heads 2 are accommodated in the mounting openings 13, and the limiting structure 3 cooperates with the mounting openings 13 to limit the spray heads 2 in the up and down directions to prevent the spray heads 2 from flying out of the mounting openings 13 during the rotation process.

[0034] The bottom of the spray arm 1 is provided with a water inlet 15 that penetrates the arm body 11 and communicates with the cavity 12, and the top is provided with a plurality of mounting ports 13 and two water outlets 14. The two water outlets 14 are respectively provided at the two free ends of the spray arm 1, and the water outlet directions of the water outlets are arranged opposite to each other. In this way, when the water outlets 14 on both sides discharge water at the same time, the spray arm 1 can achieve automatic rotation driven by the water pressure difference, thereby realizing multi-angle spraying and further expanding the spraying range.

[0035] Please refer to Figures 3 to 5 As shown, the limiting structure 3 includes a support rod 32 fixed on the arm body 11 and a limiting portion 33 connected to the support rod 32 and located at the top of the support rod 32. The limiting portion 33 is provided with an inner concave portion 31 which is concave from bottom to top. In this embodiment, the top of the nozzle 2 is located directly below the inner concave portion 31.

[0036] Please refer to Figure 3 , Figures 6 to 9 As shown, the nozzle 2 includes a hollow body 20, a protrusion 21 located on the top of the body 20, a plurality of nozzles 22 arranged around the protrusion 21, an inner cavity 24 located in the body 20, and vortex blades 25 and a central axis 26 arranged in the inner cavity 24. The vortex blades 25 are staggered and arranged on the central axis 26 in a spiral shape.

[0037] The inner cavity 24 is connected to the nozzle 22. In this embodiment, the external water flows into the cavity 12 of the spray arm 1 through the water inlet end 15 of the spray arm 1, then enters the inner cavity 24 of the spray head 2, and then is sprayed out from the nozzle 22. The water flow entering the inner cavity 24 drives the vortex blade 25 to rotate due to the pressure difference. During the rotation of the vortex blade 25, the spray head 2 is driven to rotate in the installation port 13, so that the spray head 2 can spray water at multiple angles, thereby expanding the spray range.

[0038] In this embodiment, water flows out from the water outlet 14. Through the two water outlets 14 arranged with opposite water outlet directions, the spray arm 1 is driven to rotate self - clockwise under the action of the water flow pressure difference. Moreover, water flows out from the nozzle 22 of the nozzle head 2, and the scroll blade 25 is driven to rotate through the water flow pressure difference, thereby driving the nozzle head 2 to rotate self - clockwise. In this way, multiple rotations of the spray arm 1 and the nozzle head 2 can be realized, thereby expanding the spraying range of the water flow, and realizing multi - angle spraying, and finally achieving the effect of expanding the spraying range.

[0039] In this embodiment, three of the nozzles 22 are evenly arranged on the top of each nozzle head 2, and each nozzle 22 is arranged in a cylindrical shape. In this way, the force of the water flowing out through the nozzle 22 can be more balanced in the radial direction. Of course, in other embodiments, the number of nozzles 22 can be several, and the shape of the nozzle 22 can be designed as a hollow conical shape, a multi - sided prism shape, a multi - sided pyramid shape, etc.

[0040] The protruding part 21 is arranged at the middle position of the three nozzles 22 and is directly below the concave part 31. The protruding part 21 is a conical structure, and the concave part 31 is also a concave conical structure. With such a setting, when the nozzle head 2 rotates self - clockwise, the concave part 31 can limit the nozzle head 2 in the radial direction, thereby preventing the nozzle head 2 from falling out under the action of the water flow; at the same time, the conical structure can also reduce the friction between the protruding part 21 and the concave part 31, so that the nozzle head 2 can rotate freely more flexibly.

[0041] Please refer Figure 1 and Figure 6 As shown, an outward - protruding sealing part 23 is arranged on the outer periphery of the bottom of the nozzle head 2, and the sealing part 23 abuts against the inner wall of the mounting opening 13. The sealing part 23 is used to prevent the water in the spray arm 1 from leaking out from the outer periphery of the nozzle head 2, and no limiting structure is added to the sealing part 23 to reduce the resistance when the nozzle head 2 rotates, making it easier to rotate.

[0042] In other embodiments, the base 1 can be the inner wall of a dishwasher or the base of a dishwasher, etc.

[0043] In summary, the spraying structure of the present invention sets the rotatable nozzle head 2 on the base 1 through the limiting structure 3, effectively expanding the spraying range of the base 1, achieving the effect of no dead - angle washing, and solving the problem of incomplete washing of the surface of tableware.

[0044] The above embodiments are only used to illustrate the present invention and not to limit the technical solutions described in the present invention. The understanding of this specification should be based on those skilled in the art. For example, for the description of directions such as "front", "rear", "left", "right", "up", and "down", although this specification has described the present invention in detail with reference to the above embodiments, those of ordinary skill in the art should understand that those skilled in the art can still modify the present invention or make equivalent substitutions, and all technical solutions and their improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A spraying structure, comprising a spray head, the spray head being provided with a body, an inner cavity located within the body, and a nozzle communicating with the inner cavity, characterized in that: The nozzle further includes a central shaft disposed in the inner cavity and connected to the body, and a plurality of vortex vanes disposed on the central shaft; The spraying structure further includes a base having a cavity, the nozzle is disposed on the base, and the inner cavity communicates with the cavity; The base is a spray arm, the spray arm includes an arm body and an installation port penetrating through the arm body and communicating with the cavity, and the nozzle is movably installed in the installation port; An outwardly protruding sealing portion is provided on the outer periphery of the bottom of the nozzle, the sealing portion abuts against the inner wall of the installation port, the outer periphery of the sealing portion is in a jagged shape with uneven height, and no limiting structure is provided on the sealing portion; The upper part of the nozzle is hemispherical, the nozzle protrudes from the hemispherical body, and 3 nozzles with different orientations are arranged at intervals on each nozzle; A protruding portion is provided at the top of the nozzle, and the protruding portion is a conical structure; The spraying structure further includes a limiting structure that limits the nozzle on the spray arm, and the limiting structure includes a support rod fixed on the arm body and a limiting portion connected to the support rod; Water outlets are respectively provided at both ends of the spray arm, and the water outlet directions of the water outlets are opposite; 2. The spraying structure according to claim 1, characterized in that: The limiting structure is provided with a concave portion that cooperates with the protruding portion; 3. The spray structure according to claim 2, characterized in that: The concave portion is recessed on the limiting portion, and the protruding portion is located below the concave portion; 4. The spray structure according to claim 1, wherein: The spray arm is provided with a water inlet end, and the water outlet, the installation port and the water inlet end communicate through the cavity;

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