阅读说明：本技术 一种喷淋臂及应用其的清洗机 (Spray arm and cleaning machine using same ) 是由 李亚林 朱益磊 张金凤 尤晓柏 宁超 于 2020-06-08 设计创作，主要内容包括：本发明涉及清洗机技术领域,特别涉及一种喷淋臂及应用其的清洗机,包括：基座、轮毂和扭曲叶片,所述基座为内部中空的腔体结构；所述基座的截面为圆弧形或椭圆弧形,所述基座具有第一喷淋曲面和第二喷淋曲面,所述第一喷淋曲面和所述第二喷淋曲面至少部分边沿相接；所述第一喷淋曲面上设有至少六组喷嘴组；所述第二喷淋曲面上设有喷射孔；所述轮毂设置在所述第一喷淋曲面的中部区域；所述扭曲叶片包括连接端和自由端,所述连接端与所述轮毂连接。通过在喷淋臂中设置轮毂,在轮毂上设置扭曲叶片,让水流在冲击的过程中湍动能增加,湍动能增加后的水流接触物体时冲击力变大,同时喷淋臂被动旋转转速增加,转速增加后喷出的水流与接触物之间的摩擦变大,从而易清除物体上存在的顽固污物,达到更好地清洗效果。(The invention relates to the technical field of cleaning machines, in particular to a spray arm and a cleaning machine using the same, which comprises: the base is of a hollow cavity structure; the cross section of the base is in a circular arc shape or an elliptic arc shape, the base is provided with a first spraying curved surface and a second spraying curved surface, and at least part of edges of the first spraying curved surface and the second spraying curved surface are connected; at least six groups of nozzle groups are arranged on the first spraying curved surface; the second spraying curved surface is provided with a spraying hole; the hub is arranged in the middle area of the first spraying curved surface; the twisted blade includes a connection end and a free end, the connection end being connected to the hub. Through set up wheel hub in the spray arm, set up the distortion blade on wheel hub, let rivers increase at the in-process turbulent kinetic energy of impact, impact force grow when rivers contact the object after turbulent kinetic energy increases, the passive rotatory rotational speed of spray arm increases simultaneously, and the rotational speed increases the friction grow between spun rivers and the contact object after the rotational speed increases to easily clear away the stubborn filth that exists on the object, reach better cleaning performance.)

1. A spray arm, comprising: a base (10), a hub (20) and twisted blades (30),

the base (10) is a cavity structure with a hollow interior, and the cavity structure is used for storing water;

the cross section of the base (10) is arc-shaped or elliptic arc-shaped, the base (10) is provided with a first spraying curved surface and a second spraying curved surface, the bending directions of the first spraying curved surface and the second spraying curved surface are the same, and at least part of edges of the first spraying curved surface and the second spraying curved surface are connected;

at least six groups of nozzle groups are arranged on the first spraying curved surface;

the second spraying curved surface is provided with a spraying hole (101);

the hub (20) is arranged in the middle area of the first spraying curved surface;

the twisted blade (30) comprises a connecting end (301) and a free end (302), the connecting end (301) being connected to the hub (20).

2. The spray arm according to claim 1, characterized in that said twisted blade (30) is twisted to one side from said connection end (301) to said free end (302); and/or the presence of a gas in the gas,

the twisted blade (30) has a thickness that gradually decreases from the connecting end (301) to the free end (302).

3. The spray arm according to claim 2, characterized in that at least three twisted blades (30) are provided on the hub (20).

4. The spray arm of claim 1, wherein the cross-section of the base (10) is a first elliptical arc having a ratio of the major axis to the minor axis of 150: 100.

5. The spray arm according to claim 4, characterized in that the hub (20) has a circular arc-shaped cross section;

or the section of the hub (20) is in a second elliptic arc shape, and the ratio of the long axis to the short axis of the second elliptic arc shape is 60: 25.

6. The spray arm of claim 1, wherein said at least six groups of nozzles are distributed in a predetermined array over said first curved spray surface.

7. The spray arm of claim 1 wherein each of said nozzle groups comprises at least three nozzles.

8. The spray arm of claim 7 wherein the inner wall of the nozzle is frustoconical with a ratio of the diameter of the base to the diameter of the tip of the frustoconical is 6: 2.

9. The spray arm of claim 1, wherein said second curved spray surface is provided with at least three said spray holes (101); and/or the presence of a gas in the gas,

the spray arm is provided with a symmetry axis, and an included angle of a preset angle is formed between the spray direction of the spray hole (101) and the symmetry axis.

10. A cleaning machine, characterized in that it comprises a spray arm according to any one of claims 1-9.

Technical Field

The invention relates to the technical field of cleaning machines, in particular to a spray arm and a cleaning machine using the same.

Background

Along with the increasing improvement of living standard of people, various intelligent electrical appliances facilitate the daily life of people, and the cleaning machine is used as a kitchen household electrical appliance and is more and more introduced into families. The cleaning machine on the existing market is divided according to the structure, and can be divided into: desktop, stand alone, drawer, and sink. The table type cleaning machine is an integral independent structure and is generally placed on a table top for use; the independent cleaning machine adopts an independent structure, but needs to be embedded into a cabinet for use; the drawer type cleaning machine is also embedded into a cabinet for use and can be drawn out like a drawer when in use; the water tank type cleaning machine is a new type of cleaning machine, combines the functions of a water tank and the cleaning machine, has the size consistent with that of a kitchen water tank, and can completely replace the water tank.

In any type of washing machine, water is pumped into the spray arm by the water pump and then sprayed to the dishes in the washing machine through the spray nozzle to achieve the washing effect. In the design structure, the spray arms are in a static state, so that water flow spray points are local, dirt on the surface of an object is not obviously stripped, and the cleaning is not thorough. Meanwhile, the surface area of the spray arm is large, so that falling residues are easy to accumulate on the spray arm.

Disclosure of Invention

The invention aims to solve the technical problem that the turbulence intensity of water flow sprayed by a spray arm of the existing cleaning machine is low.

In order to solve the above technical problem, in a first aspect, an embodiment of the present application discloses a spray arm, including: a base, a hub and twisted blades,

the base is a cavity structure with a hollow interior, and the cavity structure is used for storing water;

the section of the base is in a circular arc shape or an elliptic arc shape, the base is provided with a first spraying curved surface and a second spraying curved surface, the bending directions of the first spraying curved surface and the second spraying curved surface are the same, and at least part of edges of the first spraying curved surface and the second spraying curved surface are connected;

at least six groups of nozzle groups are arranged on the first spraying curved surface;

the second spraying curved surface is provided with a spraying hole;

the hub is arranged in the middle area of the first spraying curved surface;

the twisted blade includes a connection end and a free end, the connection end being connected to the hub.

Further, the twisted blade is twisted to one side from the connection end to the free end; and/or the presence of a gas in the gas,

the twisted blade has a thickness gradually decreasing from the connection end to the free end.

Furthermore, at least three twisted blades are arranged on the hub.

Further, the cross section of the base is a first elliptic arc, and the ratio of the long axis to the short axis of the first elliptic arc is 150: 100.

Further, the section of the hub is arc-shaped;

or the section of the hub is in a second elliptic arc shape, and the ratio of the long axis to the short axis of the second elliptic arc shape is 60: 25.

Furthermore, the at least six groups of nozzle groups are distributed on the first spraying curved surface in a preset array.

Further, each group of nozzles includes at least three nozzles.

Further, the inner wall of the nozzle is in a shape of a circular truncated cone, and the diameter ratio of the bottom to the top of the circular truncated cone is 6: 2.

Furthermore, at least three injection holes are formed in the second spraying curved surface; and/or the presence of a gas in the gas,

the spray arm is provided with a symmetry axis, and an included angle of a preset angle is formed between the spraying direction of the spray hole and the symmetry axis.

In a second aspect, the present application discloses a cleaning machine including a spray arm as described above.

By adopting the technical scheme, the spray arm and the cleaning machine using the spray arm have the following beneficial effects:

the embodiment of the application spray arm, through set up wheel hub in spray arm, set up the distortion blade on wheel hub, let rivers increase at the in-process torrential energy of impact, impact force grow when the rivers after the torrential energy increases contact the object to easily clear away the stubborn filth that exists on the object, reach better cleaning performance. Simultaneously, the spray arm is under the impact of rivers, and the rotational speed of passive rotation increases, and rivers and the surperficial friction grow of object have further increased the peeling strength to the filth, have improved the cleaning performance. The whole design structure of the spray arm is symmetrical, and the passive rotation effect of the spray arm is more obvious in a balanced state.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of a spray arm configuration according to an embodiment of the present application;

FIG. 2 is a perspective view of a spray arm according to one embodiment of the present application;

FIG. 3 is a schematic view of a spray arm profile according to one embodiment of the present application;

FIG. 4 is a schematic view of twisted blades in a spray arm according to one embodiment of the present application;

the following is a supplementary description of the drawings:

10-a base; 101-an injection hole; 102-a water inlet; 20-a hub; 30-twisted blades; 301-a connection end; 302-free end; 303-overlap interface curve; 401-nozzle one; 402-nozzle two; 403-nozzle three; 404-nozzle four; 405-nozzle five; 406-nozzle six.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the present application. In the description of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

As shown in fig. 1 and 2, an embodiment of the present application discloses a spray arm, including: the water storage device comprises a base 10, a hub 20 and twisted blades 30, wherein the base 10 is of a hollow cavity structure, and the cavity structure is used for storing water; the cross section of the base 10 is arc-shaped or elliptic arc-shaped, the base 10 is provided with a first spraying curved surface and a second spraying curved surface, the bending directions of the first spraying curved surface and the second spraying curved surface are the same, and at least part of edges of the first spraying curved surface and the second spraying curved surface are connected; at least six groups of nozzle groups are arranged on the first spraying curved surface; the second spraying curved surface is provided with a spraying hole 101; the hub 20 is arranged in the middle area of the first spraying curved surface; twisted blade 30 includes a connecting end 301 and a free end 302, connecting end 301 being connected to hub 20.

The spray arm, through set up wheel hub 20 in the spray arm, set up distortion blade 30 on wheel hub 20, let rivers increase at the in-process torrent energy of impact, impact force grow when rivers after the torrent energy increases contact the object to easily clear away the stubborn filth that exists on the object, reach cleaning performance better. Simultaneously, the spray arm is under the impact of rivers, and the rotational speed of passive rotation increases, and rivers and the surperficial friction grow of object have further increased the peeling strength to the filth, have improved the cleaning performance. The whole design structure of the spray arm is symmetrical, and the passive rotation effect of the spray arm is more obvious in a balanced state.

In the embodiment of the present application, as shown in fig. 1 and 2, the base 10 of the spray arm is hollow to form a water storage chamber, and the water inlet 102 of the spray arm is opened on the lower surface of the base 10 and is located at the middle position of the base 10. The overall contour of the spray arm is like the shape of an inverted round bowl, the spray arm is cut from the middle, and the contour line of the cross section of the spray arm is in a circular arc shape or an elliptic arc shape. Such a shape is beneficial to the rapid falling of residues falling on the spray arm, and the cleanness and the sanitation of the spray arm are kept. The upper surface of base 10 is first curved surface that sprays, and the lower surface of base 10 is the second curved surface that sprays, and the first curved surface that sprays meets with the bottom border part of second curved surface that sprays. The first spraying curved surface is provided with a nozzle communicated with the water storage chamber. Optionally, the first curved spray surface is provided with at least six groups of nozzle groups. The second spraying curved surface is provided with a spraying hole 101, and the spraying arm can rotate under the action of water flow sprayed from the spraying hole 101. Simultaneously, the rivers of jet orifice 101 spun can wash basin ground and pile up the residue, can also further increase the rotational speed of spray arm through the reaction force that produces by its rivers impact basin ground that jet out, have strengthened rivers and the friction of treating the washing object surface, also reduced the possibility that the residue piles up on this spray arm simultaneously, have increased the power of peeling off to the filth, have improved the cleaning performance. The hub 20 is a smooth surface connector, the hub 20 is arranged in the middle of the second spraying curved surface, and preferably, the central line of the hub 20 is coincident with the central line of the spraying arm. The hub 20 is connected with a twisted blade 30 for enhancing the turbulent effect of water flow, and the connecting end 301 of the twisted blade 30 is connected with the hub 20. In some embodiments, the side of the twisted blade 30 may also be connected to the second curved shower surface. The twisted blades 30 achieve the turbulence enhancing effect by being connected with the hub 20 and the spray arm, and avoid the turbulence enhancing effect of the water flow by the secondary water jet, and the hydraulic loss caused by the secondary water jet. By adopting the design, the turbulent flow effect can be enhanced, the rotating speed of the spray arm can be improved, water flow impacts on the twisted blades 30, and the spray arm is driven to rotate at a high speed through the interaction of force. The increase of the rotating speed of the spray arm can throw the sprayed water flow higher and farther. Finally, the water-cleaning agent is contacted with an object to be cleaned, and the friction between the water flow and the object is increased, so that the dirt on the surface of the object can be wiped off.

The twisted blade 30 is twisted to one side from the connection end 301 to the free end 302; and/or the thickness of twisted blade 30 tapers from the attached end 301 to the free end 302.

In the embodiment of the present application, as shown in fig. 3 and 4, the contour of the twisted blade 30 can be regarded as two curved surfaces being lapped together, and one contour line shared by the two curved surfaces is the lapping interface curve 303. The twisted blade 30 is twisted to one side from the connection end 301 to the free end 302. If the second curved sprinkling surface is equally divided into 24 equal parts, the connecting end 301 to the free end 302 of the twisted blade 30 at least crosses one equal division line. The thickness of the twisted blade 30 is gradually reduced from the connection end 301 to the free end 302. The twisted blade 30 is beneficial to the increase of water flow turbulence energy in the water storage chamber during the working process of the spray arm, the spray arm is driven to rotate when water flow impacts the twisted blade 30, the higher the rotating speed is, the larger the surface friction between the ejected water flow and an object to be cleaned is, and the dropping of stains on the surface of the object is facilitated. Meanwhile, the twisted blades 30 play a role in stirring, so that the washing liquid and the water are fully mixed, the turbulent kinetic energy of the water is increased in the mixing process, the stripping force on the dirt is further increased, and the cleaning effect is improved.

At least three twisted blades 30 are provided on the hub 20.

In the embodiment of the present application, as shown in fig. 2, in order to enhance the turbulent effect, 3 twisted blades 30 may be disposed on the hub 20, and optionally, the included angles between the three twisted blades 30 are equal. In some embodiments, a greater number of twisted blades 30 may be provided on hub 20.

The cross section of the base 10 is a first elliptical arc shape having a ratio of the major axis to the minor axis of 150: 100.

In this application embodiment, in order to make rivers mix more fully, the reinforcing is to the parcel nature of rivers, can be with the diameter of spray arm by little grow, by big diminish again. That is, the cross section of the susceptor 10 is designed into an elliptical arc shape having a ratio of the major axis to the minor axis of 150:100, and the longest chord of the elliptical arc shape is the major axis of the ellipse.

The cross section of the hub 20 is circular arc; alternatively, the hub 20 has a cross-section in the shape of a second elliptical arc having a major axis to minor axis ratio of 60: 25.

In this application embodiment, wheel hub 20 links to each other with the top of spray arm, and in order to reduce hydraulic loss, the energy dissipation of avoiding efflux leads to water loss too big, and wheel hub 20's cross-sectional profile is arc or elliptical arc, and wheel hub 20 diameter top-down reduces gradually, finally reduces to zero. Preferably, the hub 20 is configured as an elliptical arc in cross-section having a major axis to minor axis ratio of 60:25, and the longest chord of the elliptical arc has a maximum dimension that is less than or equal to the dimension of the minor axis of the ellipse. With this design, excellent washing results can be obtained.

At least six groups of nozzle groups are distributed on the first spraying curved surface in a preset array.

In the embodiment of the application, as shown in fig. 1, in order to quickly determine the position of the spray nozzle and the direction of the water outlet surface, the position of the spray nozzle is determined by adopting a special matrix array, so that the design is more convenient and quicker, and the positioning is more accurate. Each group of nozzle groups is annularly arranged on the first spraying curved surface, and the nozzle groups of different groups are distributed on the first spraying curved surface from top to bottom. If the normal vectors of the outlet surfaces of the six groups of nozzle groups pass through the initial vectors 0, 0 and 1, the special matrix array is utilized, and the special matrix array is used as a reference, and the special matrix array rotates around the X axis, the Y axis and the Z axis according to a certain angle respectively. In an alternative embodiment, the angle of rotation of the normal vector of nozzle one 401 out of the water around the X, Y, Z axes is 0 °, 20 °, 15 °, respectively; the angles of the normal vectors of the second nozzle 402, which are out of the water surface, rotating around the X, Y and Z axes are respectively 0 degree, 30 degrees and-15 degrees; the angles of the normal vectors of the nozzles III 403 from the water surface rotating around the X, Y and Z axes are respectively 0 degree, 40 degrees and-15 degrees; the angles of the normal vectors of the nozzles four 404 out of the water surface rotating around the X, Y and Z axes are respectively 0 degree, 50 degrees and-15 degrees; the angles of the normal vectors of the fifth nozzle 405 from the water surface, which rotate around the X, Y and Z axes, are respectively 0 degree, 60 degrees and-15 degrees; the angle of rotation of the normal vector of the nozzle six 406 out of the water surface around the X, Y and Z axes is 0 degree, 70 degrees and-15 degrees respectively. The position of the nozzle group is determined through the special matrix array, so that the accurate determination of the position of the spray nozzle and the water outlet direction is guaranteed, the model is conveniently optimized and modified in the later stage, and the workload is greatly reduced.

Each group of nozzles includes at least three nozzles.

In the embodiment of the application, considering that the washing space of the european or drawer type washing machine with a water tank or a front opening door is generally square or long and narrow rectangle, there are always dead corners which cannot be washed by the water flow sprayed from the rotary spray arm. Therefore, in order to expand the spraying range, the number of groups of the nozzle groups and the number of the nozzles in each group can be more than one. In an alternative embodiment, as shown in fig. 1, the first group of nozzles sets six nozzles starting from nozzle one 401, and the six nozzles are circumferentially distributed on the first curved spraying surface at equal intervals; the second group of nozzle groups is provided with six nozzles by taking the second nozzle 402 as a starting point, and the six nozzles are annularly distributed on the first spraying curved surface at equal intervals; the third group of nozzles is provided with three nozzles by taking the third nozzle 403 as a starting point, and the three nozzles are annularly distributed on the first spraying curved surface at equal intervals; the fourth group of nozzles is provided with six nozzles by taking the fourth nozzle 404 as a starting point, and the six nozzles are annularly distributed on the first spraying curved surface at equal intervals; the fifth group of nozzles is provided with three nozzles by taking the fifth nozzle 405 as a starting point, and the three nozzles are annularly distributed on the first spraying curved surface at equal intervals; and the sixth group of nozzles takes the six nozzles 406 as starting points to be provided with three nozzles which are annularly distributed on the first spraying curved surface at equal intervals.

The inner wall of the nozzle is in a shape of a circular truncated cone, and the diameter ratio of the bottom to the top of the circular truncated cone is 6: 2.

In the embodiment of this application, for making the rivers that spout more urgent, the dynamics is bigger, and the nozzle design is round platform shape structure, and the bottom of nozzle is connected with the first curved surface that sprays through a section cylindrical linkage segment. Optionally, the inner diameter of the nozzle is gradually reduced from bottom to top according to a "taper", and the diameter ratio of the maximum cross-sectional circle to the minimum cross-sectional circle of the nozzle is 6: 2. the inner diameter of the nozzle is gradually reduced in a conical shape from bottom to top, the pressure is increased more and more under the action of extrusion, the jet lift is higher, the jet force of jet water flow is ensured, and the cleaning range is also ensured. The jet flow can wash each surface of an object to be washed, so that the washing process is more sufficient, the washing without dead angles is achieved, and a better washing effect is obtained.

At least three injection holes 101 are arranged on the second spraying curved surface; and/or the spray arm is provided with a symmetry axis, and the spraying direction of the spraying hole 101 is at an included angle of a preset angle with the symmetry axis.

In the embodiment of the present application, as shown in fig. 1 and fig. 2, at least three injection holes 101 are provided, and the injection holes 101 are distributed in an array on the second curved spraying surface. The water outlet of the injection hole 101 is oval, the injection hole 101 can extend to the bottom of the spray arm through a pipeline, and the included angle between the normal vector of the injection plane of the injection hole 101 and the central line of the spray arm is 30 degrees. The water flow is ejected from the ejection hole 101 and directly impacts on the surface of the water tank, and the spray arm is pushed to rotate by the interaction of the force, so that the rotating speed is further improved. Meanwhile, the water flow sprayed from the spray holes 101 is driven by the rotation of the spray arm to continuously sweep away residues on the surface of the water tank, so that the water tank is cleaned, the residues are prevented from being accumulated, the residues are conveniently and smoothly discharged, and the sanitation and safety of the cleaning machine are guaranteed.

The embodiment of the application also discloses a cleaning machine, which comprises the spray arm.

The cleaning machine disclosed by the embodiment of the application comprises a spray arm, wherein a base 10 of the spray arm is in a bowl shape, and the special symmetrical shape design can not only ensure that the resistance is reduced in the cleaning process, but also avoid dirt from being attached to the smooth surface of the spray arm; the nozzles which are arranged in a stepped manner and distributed periodically are arranged on the upper surface of the base 10, so that the coverage of a cleaning area is ensured, and the cleaning effect is improved; the position of the nozzle is determined by a special matrix array, so that the position arrangement of the nozzle is convenient to optimize; set up three distortion blades 30 on base 10's the lower surface to be connected with base 10 through wheel hub 20, distortion blade 30 has increased turbulent kinetic energy in spray arm working process, has strengthened the cleaning performance, this application spray arm need not to set up active power, through rivers impact blade, it is rotatory to drive spray arm, along with spray arm's rotation, the rivers that erupt and washings frictional action, thereby reach abluent effect, the rotational speed that spray arm can be improved greatly in the setting of blade, thereby make the cleaning performance more obvious.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.