阅读说明：本技术 喷臂结构及洗碗机 (Spray arm structure and dish washing machine ) 是由 任富佳 张凯源 贺晓帆 于 2021-11-18 设计创作，主要内容包括：本发明涉及厨房电器技术领域,尤其是涉及一种喷臂结构及洗碗机。喷臂结构包括底座和喷臂,所述底座设置有限制框,所述喷臂设置有旋转框,所述旋转框能够在所述限制框的内部区域转动,且所述旋转框的外轮廓与所述限制框的内轮廓相配合,以使所述喷臂的喷淋轨迹为类方形。当喷臂旋转时,旋转框能够在限制框的内部区域转动,由于旋转框的外轮廓与限制框的内轮廓相配合,使得喷臂的喷淋轨迹为类方形,从而无需复杂的齿轮联动机构,就能够实现类似方形的喷淋轨迹,以覆盖方形内胆的四个角位置,整体装配简单,运行阻力较小。(The invention relates to the technical field of kitchen appliances, in particular to a spray arm structure and a dish washing machine. The spray arm structure comprises a base and a spray arm, wherein the base is provided with a limiting frame, the spray arm is provided with a rotating frame, the rotating frame can rotate in the inner area of the limiting frame, and the outer contour of the rotating frame is matched with the inner contour of the limiting frame, so that the spray track of the spray arm is square-like. When the spray arm is rotatory, rotatory frame can rotate at the inner region of restriction frame, because the outline of rotatory frame cooperatees with the interior profile of restriction frame for the orbit of spraying of spray arm is square-like, thereby need not complicated gear link gear, just can realize similar square orbit of spraying, with four angular position that cover square inner bag, the whole assembly is simple, and the running resistance is less.)

1. A spray arm structure is characterized by comprising a base (101) and a spray arm, wherein the base (101) is provided with a limiting frame (102), the spray arm is provided with a rotating frame (103), the rotating frame (103) can rotate in the inner area of the limiting frame (102), and the outer contour of the rotating frame (103) is matched with the inner contour of the limiting frame (102) so that the spray track (200) of the spray arm is square-like.

2. Spray arm structure according to claim 1, characterized in that the outer contour of the cross section of the rotating frame (103) is a circular triangle, the inner contour of the cross section of the limiting frame (102) is a square, the side length of the square is equal to the width of the circular triangle.

3. Spray arm structure according to claim 2, characterized in that the limiting frame (102) is provided with rounded corners at each of its four corners.

4. The spray arm structure according to claim 2, characterized in that a connecting shaft (104) is arranged between the rotary frame (103) and the spray arm, the connecting shaft (104) is tubular, one end of the connecting shaft (104) is communicated with an inner cavity (114) of the spray arm, the other end of the connecting shaft (104) is communicated with the rotary frame (103), and the axis of the connecting shaft (104) is coincident with the center line of the circular triangle.

5. The spray arm structure of claim 4, characterized in that the spray arms comprise a first spray arm (107), a second spray arm (108) and a third spray arm (109), the first spray arm (107), the second spray arm (108) and the third spray arm (109) are arranged at intervals along the circumferential direction of the connecting shaft (104), and the positions of the first spray arm (107), the second spray arm (108) and the third spray arm (109) respectively correspond to three angles of the circular triangle in a one-to-one manner.

6. The spray arm structure according to claim 5, wherein the first spray arm (107) is provided with a first spray hole (111), the second spray arm (108) is provided with a second spray hole (112), the third spray arm (109) is provided with a third spray hole (113), and a distance between the first spray hole (111) and an axis of the connecting shaft (104), a distance between the second spray hole (112) and an axis of the connecting shaft (104), and a distance between the third spray hole (113) and an axis of the connecting shaft (104) are each unequal.

7. The spray arm structure according to claim 6, wherein the number of the first spray holes (111), the number of the second spray holes (112) and the number of the third spray holes (113) are all plural, the plural first spray holes (111) are arranged at intervals along a length direction of the first spray arm (107), the plural second spray holes (112) are arranged at intervals along a length direction of the second spray arm (108), and the plural third spray holes (113) are arranged at intervals along a length direction of the third spray arm (109).

8. Spray arm structure according to any one of claims 1 to 7, characterized in that the spray arm is provided with a drive bore (110), the opening direction of the drive bore (110) being configured for water sprayed out of the drive bore (110) to drive the spray arm in rotation.

9. The spray arm structure according to any one of claims 1 to 7, wherein one end of the rotating frame (103) close to the spray arm is provided with a top plate (105), one end of the limiting frame (102) far from the base (101) is provided with a limiting plate (106), and a lower surface of the limiting plate (106) is in contact with an upper surface of the top plate (105).

10. A dishwasher, characterized by comprising a spray arm construction according to any one of claims 1 to 9.

Technical Field

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

Background

In the existing dish-washing machine products, the spraying mode of the spraying arm is rotary spraying, the spraying arm rotates around the axis of the central shaft of the spraying arm seat, and the spraying track is circular. The inner cavity of the existing dish washer is square, so that cleaning dead angles at four corners can be generated, and the cleaning effect of tableware at the four corners is poor. The existing spray arm structure usually adopts a very complicated gear linkage structure in order to realize a spray track similar to a square shape, the whole assembly is complicated, and the running resistance is large.

Disclosure of Invention

The invention aims to provide a spray arm structure and a dish washing machine, and aims to solve the technical problems that the existing spray arm structure in the prior art adopts a very complicated gear linkage structure to realize a square-like spray track, so that the assembly is complicated and the running resistance is large.

In view of the above, the present invention provides a spray arm structure, which includes a base and a spray arm, wherein the base is provided with a limiting frame, the spray arm is provided with a rotating frame, the rotating frame can rotate in an inner area of the limiting frame, and an outer contour of the rotating frame is matched with an inner contour of the limiting frame, so that a spray trajectory of the spray arm is quasi-square.

Further, in some optional embodiments, the outer contour of the cross section of the rotating frame is a circular triangle, the inner contour of the cross section of the limiting frame is a square, and the side length of the square is equal to the width of the circular triangle.

Further, in certain alternative embodiments, the limiting frame is provided with rounded corners at each of the four corners.

Further, in some optional embodiments, a connecting shaft is arranged between the rotating frame and the spray arm, the connecting shaft is tubular, one end of the connecting shaft is communicated with the inner cavity of the spray arm, the other end of the connecting shaft is communicated with the rotating frame, and the axis of the connecting shaft coincides with the center line of the circular triangle.

Further, in some optional embodiments, the spray arms include a first spray arm, a second spray arm and a third spray arm, the first spray arm, the second spray arm and the third spray arm are arranged at intervals along the circumferential direction of the connecting shaft, and the positions of the first spray arm, the second spray arm and the third spray arm respectively correspond to three corners of the circular triangle in a one-to-one manner.

Further, in some optional embodiments, the first spray arm is provided with a first spray hole, the second spray arm is provided with a second spray hole, the third spray arm is provided with a third spray hole, and a distance between the first spray hole and an axis of the connecting shaft, a distance between the second spray hole and the axis of the connecting shaft, and a distance between the third spray hole and the axis of the connecting shaft are not equal to each other.

Further, in some optional embodiments, the number of the first nozzle holes, the number of the second nozzle holes, and the number of the third nozzle holes are all plural, a plurality of the first nozzle holes are arranged at intervals along the length direction of the first spray arm, a plurality of the second nozzle holes are arranged at intervals along the length direction of the second spray arm, and a plurality of the third nozzle holes are arranged at intervals along the length direction of the third spray arm.

Further, in certain alternative embodiments, the spray arm is provided with a driving hole, and the opening direction of the driving hole is configured to enable water sprayed from the driving hole to drive the spray arm to rotate.

Further, in some optional embodiments, a top plate is disposed at one end of the rotating frame close to the spray arm, a limit plate is disposed at one end of the limit frame far from the base, and a lower surface of the limit plate is in contact with an upper surface of the top plate.

Based on the above purpose, the invention also provides a dishwasher, which comprises the spray arm structure.

Compared with the prior art, the invention has the following beneficial effects:

the spray arm structure provided by the invention comprises a base and a spray arm, wherein the base is provided with a limiting frame, the spray arm is provided with a rotating frame, the rotating frame can rotate in the inner area of the limiting frame, and the outer contour of the rotating frame is matched with the inner contour of the limiting frame, so that the spray track of the spray arm is similar to a square.

Based on the structure, according to the spray arm structure provided by the invention, when the spray arm rotates, the rotating frame can rotate in the inner area of the limiting frame, and the spraying track of the spray arm is square-like due to the matching of the outer contour of the rotating frame and the inner contour of the limiting frame, so that the square-like spraying track can be realized without a complex gear linkage mechanism to cover four corners of a square inner container, the whole assembly is simple, and the running resistance is small.

Furthermore, the outer contour of the cross section of the rotating frame is in a shape of a circular arc triangle, the inner contour of the cross section of the limiting frame is in a shape of a square, and the side length of the square is equal to the width of the circular arc triangle. The invention skillfully applies the characteristic of a circular triangle, the rotating frame rotates in the inner area of the limiting frame, the outer contour of the cross section of the rotating frame and each side of the inner contour of the cross section of the limiting frame have an intersection point, when the rotating frame rotates for one circle, the motion track of the central point of the rotating frame is a rounded square, three corners of the rotating frame respectively just draw the inner surface of the limiting frame for one circle, and the motion tracks of the three corners are rounded squares. The running track of any point on a straight line passing through the center point of the rotating frame and any one corner of the rotating frame is a rounded square.

Drawings

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

Fig. 1 is a schematic structural diagram of a spray arm structure according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a spray arm in a spray arm structure according to an embodiment of the present invention, the spray arm being engaged with a rotating frame;

fig. 3 is a schematic structural view illustrating a base and a limiting frame of a spray arm structure according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a spray arm configuration provided by an embodiment of the present invention;

FIG. 5 is a schematic view of a spray arm configuration in a first operating position in accordance with an embodiment of the present invention;

fig. 6 is a schematic view illustrating a limiting frame and a rotating frame of the spray arm structure in a first working position according to an embodiment of the present invention;

FIG. 7 is a schematic view of the spray arm structure in a second operating position in accordance with an embodiment of the present invention;

FIG. 8 is a schematic view of the restricting frame and the rotating frame of the spray arm structure in the second working position according to the embodiment of the present invention;

FIG. 9 is a schematic view of a spray arm configuration in a third operating position in accordance with an embodiment of the present invention;

FIG. 10 is a schematic view of the restricting frame and the rotating frame of the spray arm structure in a third operating position according to the embodiment of the present invention;

fig. 11 is a schematic view of a spraying track of the spray arm structure on the square inner container according to the embodiment of the present invention.

Icon: 100-square inner container; 200-spraying track; 101-a base; 102-a limit box; 103-rotating the frame; 104-a connecting shaft; 105-a top plate; 106-limiting plate; 107-first spray arm; 108-a second spray arm; 109-a third spray arm; 110-a drive aperture; 111-a first nozzle; 112-a second nozzle hole; 113-a third nozzle hole; 114-lumen.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. 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 invention.

In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 11, the present embodiment provides a spray arm structure, which includes a base 101 and a spray arm, wherein the base 101 is provided with a limiting frame 102, the spray arm is provided with a rotating frame 103, the rotating frame 103 can rotate in an inner area of the limiting frame 102, and an outer contour of the rotating frame 103 matches with an inner contour of the limiting frame 102, so that a spray trajectory 200 of the spray arm is quasi-square.

Based on this structure, the spray arm structure that this embodiment provided, when the spray arm is rotatory, rotatory frame 103 can rotate at the inner region of restriction frame 102, because the outline of rotatory frame 103 cooperatees with the interior outline of restriction frame 102 for the spray trajectory 200 of spray arm is square-like, thereby need not complicated gear link gear, just can realize square-like spray trajectory 200 to cover four angular positions of square inner bag 100, the whole assembly is simple, and the running resistance is less.

In this embodiment, the quasi-square means a rounded square with four rounded corners.

Further, in some alternative embodiments, referring to fig. 6, the outer contour of the cross section of the rotating frame 103 is a circular triangle, the inner contour of the cross section of the limiting frame 102 is a square, and the side length a of the square is equal to the width b of the circular triangle.

Specifically, the rotary frame 103 has a tubular structure in which the outer contour of the cross section is in the shape of a circular triangle, the limiting frame 102 has a tubular structure in which the inner contour of the cross section is in the shape of a square, and the rotary frame 103 is located inside the limiting frame 102.

In this embodiment, fig. 5, 7, and 9 respectively show schematic diagrams of a spray arm structure provided by an embodiment of the present invention in a first operating position, a second operating position, and a third operating position, where the first operating position, the second operating position, and the third operating position are three positions randomly cut during a rotation of the spray arm, and a dashed box in fig. 5, 7, and 9 shows a travel track of a center point of the spray arm. Fig. 6, 8 and 10 are schematic diagrams illustrating the limiting frame 102 and the rotating frame 103 respectively in the first operating position, the second operating position and the third operating position, and the dashed-dotted frames in fig. 6, 8 and 10 indicate the moving trajectory of the center point of the rotating frame 103.

In the present embodiment, the characteristic of the circular triangle is skillfully applied, as shown in fig. 6, 8 and 10, the rotating frame 103 rotates in the inner region of the limiting frame 102, and the outer contour of the cross section of the rotating frame 103 and each side of the inner contour of the cross section of the limiting frame 102 have an intersection, when the rotating frame 103 rotates one circle, the running track of the center point of the rotating frame 103 is a rounded square, each of the three corners of the rotating frame 103 just runs one circle on the inner surface of the limiting frame 102, and the running tracks of the three corners are rounded squares. The moving track of any point on a straight line passing through the center point of the rotating frame 103 and any one corner of the rotating frame 103 is a rounded square.

Further, in certain alternative embodiments, the four corners of the confinement frame 102 are each provided with rounded corners. The round corner design is matched with the running tracks of three corners of the circular triangle. By arranging the round corners at the four corners of the limiting frame 102, the appearance of the limiting frame 102 can be more attractive, and the hands can be prevented from being scratched at the corners during assembly.

In this embodiment, a connection shaft 104 is disposed between the rotary frame 103 and the spray arm, the connection shaft 104 is tubular, one end of the connection shaft 104 is communicated with an inner cavity 114 of the spray arm, the other end of the connection shaft 104 is communicated with the rotary frame 103, and an axis of the connection shaft 104 coincides with a center line of the arc triangle.

The connecting shaft 104 is in a circular tube shape, the center point of the spray arm is on the axis of the connecting shaft 104, and the axis of the connecting shaft 104 penetrates through the center of the cross section of the rotating frame 103.

In this embodiment, the diameter of the connecting shaft 104 is smaller than the width of the rotating frame 103.

In this embodiment, referring to fig. 4, a top plate 105 is disposed at one end of the rotating frame 103 close to the spray arm, and the top plate 105 is fixedly connected between the rotating frame 103 and the connecting shaft 104; one end of the limiting frame 102, which is far away from the base 101, is provided with a limiting plate 106, the limiting plate 106 is provided with a water outlet, the connecting shaft 104 penetrates through the water outlet, and the lower surface of the limiting plate 106 is in contact with the upper surface of the top plate 105. In this way, the spray arm can be limited to move along the central line of the rotating frame 103, and the spray arm can be ensured to rotate in the plane where the spray arm is located. The rotation track is square.

Further, in some alternative embodiments, referring to fig. 1 and 2, the spray arms include a first spray arm 107, a second spray arm 108 and a third spray arm 109, the first spray arm 107, the second spray arm 108 and the third spray arm 109 are arranged at intervals along the circumferential direction of the connecting shaft 104, and the positions of the first spray arm 107, the second spray arm 108 and the third spray arm 109 respectively correspond to three corners of the circular triangle in a one-to-one manner.

As described above, the movement locus of any point on the straight line passing through the center point of the rotating frame 103 and any one corner of the rotating frame 103 is a rounded square, and therefore, the positions of the first spray arm 107, the second spray arm 108, and the third spray arm 109 are respectively in one-to-one correspondence with the three corners of the circular triangle, and it can be ensured that the movement loci of the first spray arm 107, the second spray arm 108, and the third spray arm 109 are all rounded squares.

Further, in certain alternative embodiments, referring to fig. 1, the first spray arm 107 is provided with a first spray hole 111, the second spray arm 108 is provided with a second spray hole 112, the third spray arm 109 is provided with a third spray hole 113, and a distance between the first spray hole 111 and an axis of the connecting shaft 104, a distance between the second spray hole 112 and an axis of the connecting shaft 104, and a distance between the third spray hole 113 and an axis of the connecting shaft 104 are not equal to each other.

In this embodiment, the first nozzle holes 111, the second nozzle holes 112 and the third nozzle holes 113 are respectively located in the radial direction of the connecting shaft 104, so as to ensure that the spraying tracks 200 of the first nozzle holes 111, the second nozzle holes 112 and the third nozzle holes 113 are all rounded squares.

The distance between the first nozzle holes 111 and the axis of the connecting shaft 104, the distance between the second nozzle holes 112 and the axis of the connecting shaft 104, and the distance between the third nozzle holes 113 and the axis of the connecting shaft 104 are not equal, so that the spraying tracks 200 of the first nozzle holes 111, the second nozzle holes 112, and the third nozzle holes 113 are not overlapped, and thus, each part of the square inner container 100 can be covered, the cleaning efficiency is further improved, and the cleaning effect is improved.

Further, in some alternative embodiments, the number of the first nozzle holes 111, the number of the second nozzle holes 112, and the number of the third nozzle holes 113 are all plural, the plurality of first nozzle holes 111 are arranged at intervals along the length direction of the first nozzle arm 107, the plurality of second nozzle holes 112 are arranged at intervals along the length direction of the second nozzle arm 108, and the plurality of third nozzle holes 113 are arranged at intervals along the length direction of the third nozzle arm 109.

Alternatively, the number of the first nozzle holes 111, the number of the second nozzle holes 112, and the number of the third nozzle holes 113 are all three. Distances between the three first nozzle holes 111, the three second nozzle holes 112, and the three third nozzle holes 113 and the axis of the connecting shaft 104 are not equal, that is, the whole square liner 100 has nine rounded square spraying tracks 200 with different sizes.

It should be noted that only a portion of the spray trajectory 200 is shown in fig. 11.

It should be noted that the structure of the spray arm and the arrangement of the spray holes are not limited to the above one, and other arrangement modes may be selected according to the actual production and processing requirements.

Further, in certain alternative embodiments, the spray arm is provided with a driving hole 110, and the opening direction of the driving hole 110 is configured to allow the water sprayed from the driving hole 110 to rotate the spray arm.

It should be noted that the driving hole 110 in the present embodiment can be the driving hole 110 in the structure of the prior art that the spray arm is driven to rotate by the water flow.

The embodiment also provides a dishwasher, which comprises the spray arm structure provided by the embodiment.

The dish washer that this embodiment provided owing to used the spray arm structure that this embodiment provided, can realize similar square orbit 200 that sprays to cover four angular position of square inner bag 100, improve the cleaning performance, do not keep the dead angle, the whole assembly is simple, and the running resistance is less.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.