A spray arm structure and a dishwasher using the same

Abstract

The application discloses a kind of spray arm structure and apply the dish-washing machine of this spray arm structure, belong to dish-washing equipment field, including main spray arm, the main spray arm has water inlet hole, first flow channel, injection hole, the first flow channel is connected with the water inlet hole and the injection hole, further including rotationally connected in main spray arm Sub-rotary spray arm, the sub-rotary spray arm is opened with sub-spraying hole and second flow channel, the rotation axis of the sub-rotary spray arm is arranged with the rotation axis of main spray arm Angle, the main spray arm is provided with accommodating groove, and the sub-rotary spray arm is rotationally connected in accommodating groove;The first flow channel is connected with second flow channel to make water in first flow channel enter second flow channel and drive sub-rotary spray arm to rotate.The application can change injection angle, reduce washing blind area, improve washing efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to a dish washing apparatus, in particular to a spray arm structure and a dish washing machine using the same. BACKGROUND

[0002] The dish washing machine is mainly used for cleaning tableware, and the purpose of the dish washing machine is to clean the tableware. The spray arm is a main component in the dish washing machine, and the structure of the spray arm is related to the cleaning capacity of the dish washing machine. Therefore, how to optimize the structure of the spray arm to improve the cleaning capacity is a technical problem that needs to be considered in the design process. SUMMARY

[0003] In a first aspect, in order to improve the washing efficiency, the present application provides a spray arm structure.

[0004] The present application provides a spray arm structure using the following technical solution:

[0005] A spray arm structure, comprising a main spray arm, the main spray arm having a water inlet hole, a first flow channel, and a spray hole, the first flow channel being in communication with the water inlet hole and the spray hole, further comprising a sub-rotating spray arm rotatably connected to the main spray arm, the sub-rotating spray arm being provided with a sub-spray hole and a second flow channel, the rotational axis of the sub-rotating spray arm being arranged at an angle to the rotational axis of the main spray arm, the main spray arm being provided with a receiving groove, and the sub-rotating spray arm being rotatably connected to the receiving groove; the first flow channel and the second flow channel being in communication so that the water in the first flow channel enters the second flow channel and drives the sub-rotating spray arm to rotate.

[0006] By using the above technical solution, the main spray arm and the sub-rotating spray arm are combined, so that the main spray arm rotates around an axis with the sub-rotating spray arm, at the same time, the sub-rotating spray arm rotates around its own central axis. Compared with the rotation of only the main spray arm, one rotation dimension is added, and the spray direction of the water flow is also increased, which can cover a larger cleaning range, improve the cleaning effect, and improve the washing efficiency.

[0007] Optionally, the sub-spray hole has a plurality of sub-power inclined holes, and at least part of the inner side walls of the sub-power inclined holes are arranged at an angle with respect to the radial axis of the sub-rotating spray arm.

[0008] By using the above technical solution, the water sprayed by part of the sub-spray hole can also provide a driving force to drive the sub-rotating spray arm to rotate around its own central axis, so that the driving force during the rotation of the sub-rotating spray arm can be increased, and the rotation of the sub-rotating spray arm can be smoother.

[0009] Optionally, the sub-rotating spray arm comprises a spraying part and a driving part, the second flow channel is formed in the spraying part and the driving part, the driving part is inserted into any position of the spraying part in the length direction, and the sub-power inclined hole is arranged in the driving part; the sub-spraying hole further comprises a spraying auxiliary hole, and the spraying auxiliary hole is arranged in the spraying part.

[0010] By using the above technical scheme, the spraying part and the driving part are arranged separately, each part is convenient for production and manufacturing, and the cost is reduced.

[0011] Optionally, the driving part is connected to one end of the spraying part, water in the first flow channel enters the second flow channel and sequentially passes through the spraying part and the driving part.

[0012] By using the above technical scheme, the driving part is connected to the end of the spraying part, water can be sprayed into the sub-power inclined hole in the driving part after passing through the spraying part, the end of the spraying part can directly use the driving part as a cover, and the cost is reduced.

[0013] Optionally, the driving part comprises a connecting part and a main body part, the connecting part is connected to the main body part, the connecting part is closer to the spraying part than the main body part, and the connecting part is connected to the spraying part; an outer surface of the main body part comprises a cylindrical surface and a curved surface, the cylindrical surface is connected to the curved surface, and the cylindrical surface is closer to the connecting part than the curved surface; part of the sub-power inclined hole is formed in the cylindrical surface, and another part of the sub-power inclined hole is formed in the curved surface; the part of the sub-power inclined hole formed in the cylindrical surface is defined as a first hole part, the part of the sub-power inclined hole formed in the curved surface is defined as a second hole part, and the angle between the extension direction of the first hole part on the cylindrical surface and the extension direction of the second hole part on the curved surface is obtuse.

[0014] By using the above technical scheme, the first hole part on the cylindrical surface and the second hole part on the curved surface can make the sprayed water have driving force to drive the sub-rotating spray arm to rotate around the center axis direction of the sub-rotating spray arm, and the extended sub-power inclined hole can make the rotation of the sub-rotating spray arm more stable.

[0015] Optionally, the sub-rotating spray arm is provided with a small impeller in the second flow channel, water in the first flow channel enters the second flow channel and drives the small impeller to drive the sub-rotating spray arm to rotate.

[0016] By using the above technical scheme, the small impeller can provide power for the rotation of the sub-rotating spray arm under the driving of the water flow.

[0017] Optionally, the main spray arm is provided with a cylindrical part, the cylindrical part is rotationally connected with the sub-rotary spray arm, the sub-rotary spray arm is sleeved or inserted in the cylindrical part, and the cylindrical part has a flow passage communicating with the first flow channel and the second flow channel; the inner wall of the cylindrical part is provided with a positioning ring, and the end of the sub-rotary spray arm abuts against the end face of the positioning ring.

[0018] By adopting the above technical scheme, the cylindrical part can play a positioning role in the installation position of the sub-rotary spray arm in the accommodating groove, and the sub-rotary spray arm can be kept stable during rotation. The abutting action of the positioning ring and the end face of the sub-rotary spray arm enables the water in the main spray arm to be better introduced into the sub-rotary spray arm, thereby improving the subsequent driving force.

[0019] Optionally, the sub-rotary spray arm is provided with a rotating column, the rotating column is located at the end of the sub-rotary spray arm in the length direction, the main spray arm is provided with a claw, the claw is located in the accommodating groove and connected with the end of the accommodating groove in the length direction, the claw has a buckling groove and a notch, and the rotating column is buckled into the buckling groove from the notch and rotationally connected with the buckling groove.

[0020] By adopting the above technical scheme, the buckling cooperation of the claw and the rotating column enables the sub-rotary spray arm to rotate more stably in the accommodating groove, and the buckling groove and the notch on the claw can facilitate the installation of the sub-rotary spray arm.

[0021] Optionally, the main spray arm comprises an upper spray arm piece and a lower spray arm piece, and the accommodating groove is formed in the upper spray arm piece and / or the lower spray arm piece.

[0022] By adopting the above technical scheme, the upper spray arm piece and the lower spray arm piece can facilitate the production and manufacturing, thereby reducing the cost.

[0023] Optionally, the upper spray arm piece and the lower spray arm piece are provided with clamping pieces at the edges of the accommodating groove, and the clamping pieces correspondingly clamped and fixed.

[0024] By adopting the above technical scheme, the clamping pieces can improve the connection tightness between the upper spray arm piece and the lower spray arm piece, thereby reducing the water leakage.

[0025] Optionally, the inner part of the upper spray arm piece and / or the lower spray arm piece is provided with a flow channel communicating with the water inlet hole at least at one side in the width direction of the accommodating groove, and the upper spray arm piece and / or the lower spray arm piece is provided with a side spray hole.

[0026] By adopting the above technical scheme, the side spray hole is formed in the main spray arm provided with the sub-rotary spray arm, which can further increase the spraying direction and the range covered by the spraying, thereby improving the washing effect.

[0027] In a second aspect, in order to improve the cleaning capacity of tableware, the application provides a dishwasher.

[0028] The application provides a dish washing machine adopting the technical scheme as follows:

[0029] The dish washing machine comprises the spray arm structure as described in the first aspect.

[0030] Compared with the prior art, the application has the following beneficial effects: the main spray arm and the sub-rotary spray arm are arranged at an angle along the rotation axis, and the sub-rotary spray arm can rotate around the rotation axis of the main spray arm and around its own axis, which is conducive to expanding the spray angle of the spray arm, thereby reducing the washing blind area and enabling water to wash the dishes at more angles; the first flow channel and the second flow channel are connected, and the main spray arm and the sub-rotary spray arm can be directly driven to rotate by water. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a top view of the spray arm structure disclosed in the embodiment.

[0032] Figure 2 is Figure 1 A-A sectional view of.

[0033] Figure 3 is a structure schematic view of one of the views of the lower piece of the spray arm of the spray arm structure disclosed in the embodiment.

[0034] Figure 4 is Figure 3 partially enlarged view in, mainly used to show the cylindrical part.

[0035] Figure 5 is Figure 1 B-B sectional view of.

[0036] Figure 6 is a partial sectional view of the sub-rotary spray arm of the spray arm structure disclosed in the embodiment.

[0037] Figure 7 is a partial structure schematic view of the sub-rotary spray arm of the spray arm structure disclosed in the embodiment.

[0038] Figure 8 is a partial sectional view of the driving part of the spray arm structure disclosed in the embodiment.

[0039] Figure 9 is a partial structure schematic view of the driving part of the spray arm structure disclosed in the embodiment.

[0040] Figure 10 is a structure schematic view of the upper piece of the spray arm of the spray arm structure disclosed in the embodiment.

[0041] Figure 11This is a schematic diagram of the lower blade of a spray arm structure disclosed in this embodiment.

[0042] Explanation of reference numerals in the attached drawings: 1. Main spray arm; 100. First flow channel; 10. Water inlet; 101. Connecting ring; 11. Upper spray arm plate; 12. Lower spray arm plate; 13. Spray hole; 14. Power hole; 2. Sub-rotating spray arm; 200. Second flow channel; 201. Spray section; 2010. Secondary spray hole; 202. Drive section; 2021. Connecting section; 2022. Main body section; 20221. Column Surface; 20222, curved surface; 2020, sub-power inclined hole; 20201, first hole section; 20202, second hole section; 21, rotating column; 211, fastening piece; 2111, notch; 3, receiving groove; 4, cylindrical section; 41, flow cavity; 42, positioning ring; 5, converging inclined surface; 6, small impeller; 7, snap-fit ​​plate; 8, snap-fit ​​piece; 81, snap-fit; 9, flow channel; 15, side spray hole. Detailed Implementation

[0043] The present application will be further described in detail below with reference to the accompanying drawings.

[0044] The first aspect of this application discloses a spray arm structure. (Refer to...) Figure 1 and Figure 2 As shown, the spray arm structure includes a main spray arm 1 and a sub-rotating spray arm 2. The main spray arm 1 has a water inlet 10, a spray hole 13, and a first flow channel 100, which connects the spray hole 13 and the water inlet 10. The sub-rotating spray arm 2 is rotatably connected to the main spray arm 1. The sub-rotating spray arm 2 has a sub-spray hole that communicates with the water inlet 10 of the main spray arm 1. The rotation axis of the sub-rotating spray arm 2 is set at an angle to the rotation axis of the main spray arm 1. In this embodiment, it is preferable that the rotation axis of the sub-rotating spray arm 2 is perpendicular to the rotation axis of the main spray arm 1. The sub-rotating spray arm 2 is connected to the main spray arm 1. The main spray arm 1 is provided with a receiving groove 3. The sub-rotating spray arm 2 is rotatably connected to the receiving groove 3. Water in the main spray arm 1 flows into the sub-rotating spray arm 2 and drives the sub-rotating spray arm 2 to rotate around its own rotation axis. The rotation axis of the main spray arm 1 is the central axis around which the main spray arm 1 rotates during its rotation, and the rotation axis of the sub-rotating spray arm 2 is the central axis around which the sub-rotating spray arm 2 rotates during its rotation.

[0045] In this embodiment, the water introduced into the main spray arm 1 and the sub-rotating spray arm 2 is only one type of fluid medium. Other media can also be introduced into the main spray arm 1 and the sub-rotating spray arm 2 according to actual needs.

[0046] The main spray arm 1 is in a long strip hollow plate structure, and the two ends are in a circular arc. The water inlet hole 10 is arranged in the center of the main spray arm 1 and communicates with the first flow channel 100 of the main spray arm 1. The water inlet hole 10 penetrates one side of the main spray arm 1, but the position of the water inlet hole 10 on the main spray arm 1 can be changed according to actual needs, and the water inlet hole 10 can be arranged closer to the end of the main spray arm 1.

[0047] The main spray arm 1 is formed with a connecting ring 101 at the water inlet hole 10, and the connecting ring 101 is used for connecting an external mechanism, and the main spray arm 1 can rotate around the axis of the water inlet hole 10.

[0048] The sub-rotating spray arm 2 is arranged on one side of the main spray arm 1 located at the water inlet hole 10. In some embodiments, the sub-rotating spray arm 2 is arranged on both sides of the main spray arm 1 located at the water inlet hole 10. According to the width of the main spray arm 1, the number of sub-rotating spray arms 2 on one side of the main spray arm 1 located at the water inlet hole 10 is not limited to one, and multiple sub-rotating spray arms 2 can be arranged on any side of the main spray arm 1 located at the water inlet hole 10. The multiple adjacent sub-rotating spray arms 2 on each side can be arranged in sequence along the width direction of the main spray arm 1, or can be arranged in sequence along the length direction of the main spray arm 1.

[0049] In combination Figure 1 and Figure 2 In this embodiment, the spray hole 13 is arranged on the side of the main spray arm 1 where the sub-rotating spray arm 2 is not arranged. The number of spray holes 13 is multiple and uniformly arranged along the length direction of the main spray arm 1. The axis of the spray hole 13 can be perpendicular to the surface of the main spray arm 1 and penetrate the upper surface of the main spray arm 1. At this time, the power hole 14 communicating with the first flow channel 100 is arranged on the surface of the main spray arm 1 below the spray hole 13. The axis of the power hole 14 is inclined, and forms a certain angle with the rotation axis of the main spray arm 1. Or the axis of the power hole 14 is horizontal, which is perpendicular to the rotation axis of the main spray arm 1 and perpendicular to the length direction of the main spray arm 1. In other embodiments, the multiple spray holes 13 arranged along the length direction of the main spray arm 1 form a row, and multiple rows of spray holes 13 are arranged along the width of the main spray arm 1 according to the width of the main spray arm 1.

[0050] In some embodiments, the axis of the spray hole 13 on the upper surface of the main spray arm 1 is inclined, and forms an inclined angle with the upper surface of the main spray arm 1. The direction of the axis of the spray hole 13 in a row is parallel. In this embodiment, the power hole 14 or the auxiliary power hole 14 can be cancelled, and the inclined spray hole 13 can drive the main spray arm 1 to rotate around the axis of the water inlet hole 10.

[0051] Back to Figure 1In the embodiment, the accommodating groove 3 is arranged on one side of the main spray arm 1 where the sub-rotating spray arm 2 is arranged, the accommodating groove 3 is arranged along the length direction of the main spray arm 1, the length of the accommodating groove 3 is less than the length of the side of the main spray arm 1, in other embodiments, the accommodating groove 3 can be arranged according to the number and arrangement of the sub-rotating spray arm 2. When the sub-rotating spray arm 2 is arranged in the accommodating groove 3, the sub-rotating spray arm 2 can be rotated around its own axis by the water in the main spray arm 1, the rotation axis of the sub-rotating spray arm 2 is perpendicular to the rotation axis of the main spray arm 1. In other embodiments, the accommodating groove 3 can be arranged at an angle with the rotation axis of the main spray arm 1, then the sub-rotating spray arm 2 is arranged in the accommodating groove 3, the sub-rotating spray arm 2 is inclined relative to the horizontal plane.

[0052] The accommodating groove 3 penetrates the upper and lower surfaces of the main spray arm 1, in other embodiments, the accommodating groove 3 can only penetrate one side surface of the main spray arm 1.

[0053] In the embodiment, the sub-rotating spray arm 2 is rotationally connected in the accommodating groove 3, the diameter of the sub-rotating spray arm 2 is greater than the thickness of the upper and lower surfaces of the main spray arm 1, but less than the width of the accommodating groove 3.

[0054] Referring to Figure 3 and Figure 4 , the main spray arm 1 is provided with a cylindrical portion 4, the cylindrical portion 4 is arranged at the accommodating groove 3, the cylindrical portion 4 can be integrally formed on the main spray arm 1 when the main spray arm 1 is formed, the cylindrical portion 4 is annular, the axial direction of the cylindrical portion 4 is parallel to the length direction of the accommodating groove 3, and the sub-rotating spray arm 2 can be inserted or sleeved in the cylindrical portion 4. In other embodiments, the cylindrical portion 4 can be fixedly connected to the main spray arm 1 or detachably fixedly connected to the main spray arm 1 through other structures.

[0055] In the embodiment, the cylindrical portion 4 is arranged at one end of the accommodating groove 3 close to the water inlet hole 10, and the cylindrical portion 4 is in communication with the first flow channel 100, when the sub-rotating spray arm 2 is inserted in the cylindrical portion 4, the second flow channel 200 is in communication with the first flow channel 100 through the cylindrical portion 4. In other embodiments, the sub-rotating spray arm 2 can be sleeved on the outer wall of the cylindrical portion 4.

[0056] In some embodiments, the cylindrical portion 4 can also be arranged at one end of the accommodating groove 3 away from the center of the main spray arm 1, or at any position along the length direction of the accommodating groove 3.

[0057] In the embodiment, the two end faces of the cylindrical portion 4 along its axial direction are penetrated and form a flow cavity 41, which is communicated with the interior of the main spray arm 1, and when the sub-rotary spray arm 2 is connected to the cylindrical portion 4, the first flow channel 100 and the second flow channel 200 are communicated through the flow cavity 41. In other embodiments, when the cylindrical portion 4 is not arranged at the end of the accommodating groove 3, the side wall of the cylindrical portion 4 is communicated with the interior of the main spray arm 1, and at the same time, the side wall of the sub-rotary spray arm 2 is communicated with the interior of the cylindrical portion 4.

[0058] In the embodiment, the inner wall of the cylindrical portion 4 is provided with a positioning ring 42, which can be integrally formed on the inner wall of the cylindrical portion 4. When the sub-rotary spray arm 2 and the cylindrical portion 4 are installed, one of the end faces of the sub-rotary spray arm 2 abuts against the end face of the positioning ring 42, so that the position of the sub-rotary spray arm 2 in the accommodating groove 3 can be positioned, and at the same time, the water of the main spray arm 1 can be introduced into the interior of the sub-rotary spray arm 2 as much as possible. In order to better converge the water into the cylindrical portion 4, a converging inclined surface 5 for guiding the water to the cylindrical portion 4 is arranged in the main spray arm 1 on the side of the cylindrical portion 4 close to the center of the main spray arm 1.

[0059] Referring to Figure 5 and Figure 6 , the end of the sub-rotary spray arm 2 away from the cylindrical portion 4 is also provided with a rotating column 21, which is a cylindrical body, the central axis of the rotating column 21 is coaxial with the axis of the sub-rotary spray arm 2, and the rotating column 21 is integrally formed on the end of the sub-rotary spray arm 2 away from the cylindrical portion 4, or can be fixedly installed or detachably fixed on the end of the sub-rotary spray arm 2 away from the cylindrical portion 4 by other structures.

[0060] In order to match the rotating column 21, the main spray arm 1 is provided with a clamping jaw in the inner wall of the accommodating groove 3 away from the one end of the cylindrical part 4, the clamping jaw is connected to the end of the accommodating groove 3 in the length direction, and the clamping jaw includes a plurality of clamping pieces 211 which are uniformly distributed along the circumferential direction of the sub-rotating spray arm 2, in this embodiment, the clamping pieces 211 are three, and there is a gap between adjacent clamping pieces 211, a clamping groove with a circular cross-section is formed in the middle of the three clamping pieces 211, the gap between the two clamping pieces 211 is located at the top of the clamping groove, the gap is formed as a notch 2111 for clamping the rotating column 21, the distance of the notch 2111 is slightly smaller than the diameter of the rotating column 21, the parts of the clamping pieces 211 on both sides of the notch 2111 are arc surfaces, which facilitate the clamping of the rotating column 21, and the clamping groove and the rotating column 21 are gap-fitted, so that when assembling, the end of the sub-rotating spray arm 2 away from the rotating column 21 is inserted into the cylindrical part 4 first, so that most of the sub-rotating spray arm 2 can be placed in the accommodating groove 3, then the rotating column 21 is clamped into the clamping groove from the notch 2111, so that the sub-rotating spray arm 2 can be placed in the accommodating groove 3, and one end is rotatably connected to the cylindrical part 4 and one end is rotatably connected to the clamping groove. In other embodiments, the clamping groove is opened in the one end of the main spray arm 1 located in the accommodating groove 3, and the clamping groove penetrates through the upper surface of the main spray arm 1 and the inner side wall of the accommodating groove 3, the cross-section of the clamping groove is circular and a notch is formed in the upper surface of the main spray arm 1, the clamping groove and the rotating column 21 are gap-fitted, but the width of the notch of the clamping groove is slightly smaller than the diameter of the rotating column 21.

[0061] Referring to Figure 6 and Figure 7 In order to better realize cleaning and driving, in some embodiments, a plurality of sub-spraying holes are provided on the sub-rotating spray arm 2, and at least a part of the sub-spraying holes are sub-power inclined holes 2020, the inner side wall of at least a part of the sub-power inclined holes 2020 away from the end of the radial axis of the sub-rotating spray arm 2 is arranged at an angle relative to the radial axis of the sub-rotating spray arm 2; in the cross-section perpendicular to the central axis of the sub-rotating spray arm 2, at least one of the two opposite side walls of the sub-power inclined hole 2020 is arranged at an angle relative to the radial axis of the sub-rotating spray arm 2; when the part of the inner side wall of the sub-power inclined hole 2020 is a plane, the plane and the radial axis of the sub-rotating spray arm 2 are arranged at an angle and are not parallel; when the part of the inner side wall of the sub-power inclined hole 2020 is an arc surface, the tangent plane of the arc surface and the radial axis of the sub-rotating spray arm 2 are not perpendicular and are arranged at an angle. The end of the sub-power inclined hole 2020 is the position of the water flow from the second channel 200 sprayed from the sub-rotating spray arm 2, and the opposite reaction force of the tangential component of the jet water sprayed from the sub-power inclined hole 2020 can drive the sub-rotating spray arm 2 to rotate around its own central axis. In addition to the sub-power inclined hole 2020, the sub-spraying hole also includes a spraying auxiliary hole 2010, and the axis of the spraying auxiliary hole 2010 can be arranged along the radial direction of the sub-rotating spray arm 2.

[0062] In some embodiments, the sub-rotating spray arm 2 comprises a driving part 202 and a spraying part 201 connected in communication, water in the first flow channel 100 enters the second flow channel 200 in the sub-rotating spray arm 2 and drives the spraying part 201 to rotate around a direction perpendicular to the rotation axis of the main spray arm 1 through the driving part 202, and the second flow channel 200 is formed inside the driving part 202 and the spraying part 201.

[0063] In combination Figure 7 and Figure 8 In the present embodiment, the spraying part 201 is a cylinder with both end faces in communication, the driving part 202 comprises a connecting part 2021 and a main body part 2022, the connecting part 2021 and the main body part 2022 are connected, and the outer contour of the connecting part 2021 is closer to the central axis of the driving part 202 than the outer contour of the main body part 2022; the connecting part 2021 extends into the interior of the spraying part 201 and is inserted with the spraying part 201, and in another embodiment, the diameter of the connecting part 2021 can be larger than the main body part 2022 and is sleeved on the outer wall of the spraying part 201. The driving part 202 is connected to one end of the spraying part 201, and the other end of the spraying part 201 is rotationally connected with the cylindrical part 4, can be inserted into the inner wall of the cylindrical part 4, and the end face of the spraying part 201 away from the driving part 202 abuts against the end face of the positioning ring 42. In some embodiments, the materials of the spraying part 201 and the driving part 202 can be selected to be different, the spraying part 201 can be plastic, and the driving part 202 can be metal.

[0064] The outer surface of the main body part 2022 comprises a cylindrical surface 20221 and a curved surface 20222, the cylindrical surface 20221 is connected with the curved surface 20222, and the cylindrical surface 20221 is closer to the connecting part 2021 than the curved surface 20222; the sub-power inclined hole 2020 is partially formed on the cylindrical surface 20221, and the sub-power inclined hole 2020 is partially formed on the curved surface 20222; the part of the sub-power inclined hole 2020 formed on the cylindrical surface 20221 is defined as a first hole part 20201, and the part of the sub-power inclined hole 2020 formed on the curved surface 20222 is defined as a second hole part 20202, and the angle between the extension direction of the first hole part 20201 on the cylindrical surface 20221 and the extension direction of the second hole part 20202 on the curved surface 20222 is obtuse. By adopting the above technical solution, greater driving force can be achieved under relatively smaller water flow.

[0065] The sub-power inclined hole 2020 is communicated with the second flow channel 200, so that when water is sprayed from the sub-power inclined hole 2020, the component force of the water can drive the spraying part 201 and the driving part 202 to rotate synchronously around the central axis thereof. There can be multiple sub-power inclined holes 2020 on the driving part 202 and they are uniformly distributed along the circumference of the driving part 202. In addition to the sub-power inclined hole 2020, the spraying auxiliary hole 2010 is arranged on the spraying part 201, the axis of the spraying auxiliary hole 2010 can be parallel to the radial direction of the spraying part 201, and there are multiple spraying auxiliary holes 2010 uniformly distributed along the circumference of the spraying part 201 and forming a group. Synchronously, there are multiple groups of spraying auxiliary holes 2010 arranged along the axial direction of the spraying part 201. Of course, the arrangement mode of the spraying auxiliary hole 2010 can be changed according to actual cleaning requirements.

[0066] The water in the first flow channel 100 flows into the second flow channel 200 from the flow passage 41, and then passes through the spraying part 201 and the driving part 202, so that the water is sprayed from the sub-power inclined hole 2020 of the driving part 202 to drive the whole sub-rotating spray arm 2 to rotate. The water flows in the second flow channel 200 until it reaches the end to be sprayed, which drives the sub-rotating spray arm 2 to rotate, so that the rotation of the sub-rotating spray arm 2 is more stable.

[0067] In the present embodiment, the rotating column 21 is integrally formed or detachably connected to the end of the driving part 202 away from the spraying part 201, and the rotating column 21 and the driving part 202 are coaxial.

[0068] In other embodiments, as described above, when the cylindrical part 4 is located at any position in the length direction of the spraying part 201, the driving part 202 can still be connected to one end of the spraying part 201 and connected to the main spray arm 1 through the rotating column 21.

[0069] In other embodiments, one end of the spraying part 201 is connected to the cylindrical part 4, and the other end is a closed end (not shown in the figure), and a mounting groove penetrating the outer wall of the spraying part 201 is arranged at any position in the length direction of the spraying part 201. The span of the mounting groove can be half of the spraying part 201 or greater than half of the spraying part 201 and less than the whole circle of the spraying part 201. The driving part 202 penetrates the two ends and can be clamped and fixed in the mounting groove. The driving part 202 and the spraying part 201 can be sealed and fixed. At this time, the sub-power inclined hole 2020 of the driving part 202 is arranged on the side wall of the driving part 202, so that the water sprayed from the sub-power inclined hole 2020 can drive the spraying part 201 to rotate synchronously.

[0070] Reference Figure 9In other embodiments, one end of the sub-rotating spray arm 2 is inserted into the cylindrical portion 4, and the first flow channel 100 and the second flow channel 200 are communicated through the flow passage 41 of the cylindrical portion 4, and a small impeller 6 is arranged in the second flow channel 200 of the sub-rotating spray arm 2, and the water entering from the flow passage 41 can drive the whole sub-rotating spray arm 2 to rotate around its own axis through the small impeller 6. The small impeller 6 can be a plurality of inclined blades distributed circumferentially along the sub-rotating spray arm 2, one end of the inclined blade is directly fixedly connected to the inner wall of the sub-rotating spray arm 2, and the other end is fixedly connected together. In some embodiments, the small impeller 6 can also be a circular ring block, and a plurality of inclined blades are uniformly distributed on the inner wall of the circular ring block, and the circular ring block is inserted and fixed to the inner wall of the sub-rotating spray arm 2, or is fixedly or detachably connected to the inner wall of the sub-rotating spray arm 2 through other structures. In other embodiments, the small impeller 6 can be arranged at one end of the sub-rotating spray arm 2 inserted into the cylindrical portion 4, or at the other end of the sub-rotating spray arm 2 away from the cylindrical portion 4, or at any position in the length direction of the sub-rotating spray arm 2.

[0071] With reference to Figure 10 And Figure 11 In order to better assemble and disassemble, the main spray arm 1 comprises a spray arm upper sheet 11 and a spray arm lower sheet 12, and the accommodating groove 3 is arranged on the spray arm upper sheet 11 and / or the spray arm lower sheet 12.

[0072] In this embodiment, the spray arm upper sheet 11 and the spray arm lower sheet 12 are arranged with the same accommodating grooves 3 on the same side of the water inlet hole 10 and are communicated, so that the accommodating grooves 3 penetrate through the upper and lower surfaces of the main spray arm 1. In other embodiments, the accommodating grooves 3 can be arranged only on the upper surface of the spray arm upper sheet 11 or the lower surface of the spray arm lower sheet 12 as described above. In addition, according to actual needs, the water inlet hole 10 can be arranged on any one of the spray arm upper sheet 11 or the spray arm lower sheet 12.

[0073] In this embodiment, the cylindrical portion 4 is integrally formed on the end of the accommodating groove 3 of the spray arm lower sheet 12 close to the water inlet hole 10, and after the spray arm upper sheet 11 and the spray arm lower sheet 12 are connected, the cylindrical portion 4 will protrude from the accommodating groove 3 of the spray arm upper sheet 11.

[0074] In order to better connect the spray arm upper sheet 11 and the spray arm lower sheet 12, the outer edges of the spray arm upper sheet 11 and the spray arm lower sheet 12 are both formed with clamping plates 7 through edge turning process, so that the spray arm upper sheet 11 and the spray arm lower sheet 12 can be fixedly connected.

[0075] In order to better connect at the accommodating groove 3, the upper spray arm piece 11 and the lower spray arm piece 12 are also turned up to form the clamping pieces 8 along the edges of the accommodating groove 3, and the clamping pieces 8 are integrally formed with the buckles 81 on both sides of the accommodating groove 3. The buckles 81 can be evenly distributed along the length direction of the main spray arm 1. The buckles 81 of the upper spray arm piece 11 and the lower spray arm piece 12 can be one-to-one corresponding and clamped and fixed with each other. The form of the buckles 81 can be a groove of the upper spray arm piece 11 and a wedge of the lower spray arm piece 12, or they can be replaced with each other. When the upper spray arm piece 11 and the lower spray arm piece 12 are clamped and fixed with each other, the buckles 81 on the clamping pieces 8 can be tightly matched.

[0076] Because the upper spray arm piece 11 and the lower spray arm piece 12 form the clamping pieces 8 along the edges of the accommodating groove 3, the clamping pieces 8 and the clamping plates 7 of the outer edges form the flow channels 9 on both sides of the width direction of the accommodating groove 3. The flow channels 9 are connected with the water inlet holes 10. Meanwhile, a plurality of side spray holes 15 are evenly distributed along the length direction of the main spray arm 1 at the positions of the upper spray arm piece 11 and / or the lower spray arm piece 12 corresponding to the flow channels 9. The axial direction of the side spray holes 15 is parallel to the axial direction of the water inlet holes 10.

[0077] In the second aspect, the embodiment also discloses a dish washing machine. The dish washing machine has a washing cavity. The spray arm structure is located in the washing cavity and can be arranged on the top wall, the side wall or the bottom wall of the washing cavity. In other embodiments, the spray arm structure can also be connected with a basket and located at the bottom of the basket.

[0078] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application. Any equivalent changes made according to the structure, shape and principle of the present application should be covered by the protection scope of the present application.

Claims

1. A spray arm structure, comprising a main spray arm (1), the main spray arm (1) having a water inlet (10), a first flow channel (100), and a spray hole (13), the first flow channel (100) connecting the water inlet (10) and the spray hole (13), characterized in that: It also includes a sub-rotating spray arm (2) rotatably connected to the main spray arm (1). The sub-rotating spray arm (2) has sub-spray holes and a second flow channel (200). The rotation axis of the sub-rotating spray arm (2) is set at an angle to the rotation axis of the main spray arm (1). The main spray arm (1) is provided with a receiving groove (3). The sub-rotating spray arm (2) is rotatably connected to the receiving groove (3). The first flow channel (100) and the second flow channel (200) are connected to allow water in the first flow channel (100) to enter the second flow channel (200) and drive the sub-rotating spray arm (2) to rotate. The sub-spray holes have multiple and at least some of them are sub-powered inclined holes (2020). At least part of the inner wall of the sub-powered inclined hole (2020) is set at an angle relative to the radial axis of the sub-rotating spray arm (2). The outer surface of the sub-rotating spray arm (2) includes The cylindrical surface (20221) and the curved surface (20222) are connected; a portion of the sub-powered inclined hole (2020) is formed on the cylindrical surface (20221), and another portion of the sub-powered inclined hole (2020) is formed on the curved surface (20222); the sub-rotating spray arm (2) includes a spray section (201) and a drive section (202), and the sub-powered inclined hole (2020) is disposed on the drive section (202); the sub-spray hole also includes a spray sub-hole (2010), and the spray sub-hole (2010) is disposed on the spray section (201); the drive section (202) is connected to one end of the spray section (201), and the water in the first flow channel (100) enters the second flow channel (200) and passes through the spray section (201) and the drive section (202) in sequence.

2. The spray arm structure according to claim 1, characterized in that: The drive unit (202) includes a connecting part (2021) and a main body (2022), the connecting part (2021) and the main body (2022) are connected, the connecting part (2021) is closer to the spray unit (201) than the main body (2022), and the connecting part (2021) is connected to the spray unit (201); the outer surface of the main body (2022) includes a cylindrical surface (20221) and a curved surface (20222), the cylindrical surface (20221) and the curved surface (20222) are connected, the cylindrical surface (20221) is closer to the connecting part (2021) than the curved surface (20222); the sub-power A portion of the oblique hole (2020) is formed on the cylindrical surface (20221), and another portion of the sub-powered oblique hole (2020) is formed on the curved surface (20222). The portion of the sub-powered oblique hole (2020) formed on the cylindrical surface (20221) is defined as the first hole portion (20201), and the portion of the sub-powered oblique hole (2020) formed on the curved surface (20222) is defined as the second hole portion (20202). The angle between the extension direction of the first hole portion (20201) on the cylindrical surface (20221) and the extension direction of the second hole portion (20202) on the curved surface (20222) is set at an obtuse angle.

3. The spray arm structure according to claim 2, characterized in that: The sub-rotating spray arm (2) is provided with a small impeller (6) in the second flow channel (200). Water in the first flow channel (100) enters the second flow channel (200) and drives the small impeller (6) to rotate the sub-rotating spray arm (2).

4. The spray arm structure according to claim 2, characterized in that: The main spray arm (1) is provided with a cylindrical part (4), which is rotatably connected to the sub-rotating spray arm (2). The sub-rotating spray arm (2) is sleeved or inserted into the cylindrical part (4). The cylindrical part (4) has a flow cavity (41) that connects the first flow channel (100) and the second flow channel (200). The inner wall of the cylindrical part (4) is provided with a positioning ring (42), and the end of the sub-rotating spray arm (2) abuts against the end face of the positioning ring (42).

5. The spray arm structure according to claim 1, characterized in that: The sub-rotating spray arm (2) is provided with a rotating column (21), which is located at the end of the sub-rotating spray arm (2) in the length direction; the main spray arm (1) is provided with a pawl, which is located in the receiving groove (3) and connected to the end of the receiving groove (3) in the length direction; the pawl has a snap-fit ​​groove and a notch (2111), and the rotating column (21) is snapped into the snap-fit ​​groove from the notch (2111) and rotatedly connected to the snap-fit ​​groove.

6. The spray arm structure according to claim 1, characterized in that: The main spray arm (1) includes an upper spray arm plate (11) and a lower spray arm plate (12), and the receiving groove (3) is formed on the upper spray arm plate (11) and / or the lower spray arm plate (12).

7. A spray arm structure according to claim 6, characterized in that: Both the upper spray arm plate (11) and the lower spray arm plate (12) are provided with snap-fit ​​pieces (8) at the edge of the receiving groove (3), and the corresponding snap-fit ​​pieces (8) are snapped and fixed.

8. A spray arm structure according to claim 6, characterized in that: The upper spray arm plate (11) and / or the lower spray arm plate (12) are provided with a flow channel (9) communicating with the water inlet hole (10) on at least one side of the receiving groove (3) in the width direction. The upper spray arm plate (11) and / or the lower spray arm plate (12) are provided with side spray holes (15).

9. A dishwasher, characterized in that: Includes the spray arm structure according to any one of claims 1-8.

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