A spray assembly for a dishwasher and a dishwasher

Abstract

The present application relates to the technical field of household appliances, and discloses a spraying assembly of a dish-washing machine and the dish-washing machine. The spraying assembly comprises a spraying main body, at least two spraying branch parts are arranged at two ends of the spraying main body respectively; a telescopic spraying arm is arranged on one spraying branch part at each end of the spraying main body, and the telescopic spraying arm can move telescopically relative to the spraying branch part; the telescopic spraying arm is provided with a spraying cavity, and a first spraying hole is arranged on the telescopic spraying arm and communicates with the spraying cavity. The telescopic spraying arm can increase the spraying range, and effectively solves the problem of the dead angle of the dish-washing machine. At least two spraying branch parts are arranged at two ends of the spraying main body respectively, one spraying branch part is used for mounting the telescopic spraying arm, and the other spraying branch part is used for normal water spraying, so that when the spraying assembly rotates to spray water, a washing blind area is not formed in the annular area formed by the overlapping part of the telescopic spraying arm and the spraying main body, and the cleaning effect of the dish-washing machine is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a spraying assembly of a dishwasher and the dishwasher. BACKGROUND

[0002] With the improvement of living standards, people's requirements for the quality of life are also getting higher and higher. Dishwashers gradually enter more and more families because they can save time, clean and hygienic. Dishwashers replace manual washing, fully liberate the hands of workers, so that users can enjoy leisure time after meals and be free from tedious housework, improve the quality of life and are popular with the public.

[0003] Under normal washing conditions of the dishwasher, water flows out of the spraying holes of the spraying arm and is washed along with the rotation of the spraying arm. However, the inner tank of the existing dishwasher is mostly square. In order to increase the number of dishes placed, the dish placing position is also square. However, the rotation area of the spraying arm is circular, so the spraying arm is difficult to spray to the corner area of the inner tank, there is a spraying dead angle, which reduces the cleaning effect of the dishwasher and affects the user experience. SUMMARY

[0004] Therefore, the present application provides a spraying assembly of a dishwasher and the dishwasher to solve the problem that the spraying arm of the dishwasher has a spraying dead angle in the prior art, which reduces the cleaning effect of the dishwasher and affects the user experience.

[0005] In a first aspect, the present application provides a spraying assembly of a dishwasher, which comprises a spraying main body and a telescopic spraying arm. The two ends of the spraying main body are respectively provided with at least two spraying branch parts. The telescopic spraying arm is arranged on one spraying branch part at each end of the spraying main body, and the telescopic spraying arm can move telescopically relative to the spraying branch part. The telescopic spraying arm has a spraying cavity, and a first spraying hole is formed in the telescopic spraying arm and communicates with the spraying cavity.

[0006] Beneficial effects: By setting the telescopic spray arm can be extended outward, thereby increasing the spraying range, can effectively solve the problem of the inner tank corner dishware spraying dead angle, and by setting at least two spray branch parts at both ends of the spray body, one of the spray branch parts is used to install the telescopic spray arm, the other spray branch part is used to normally spray water, so that the telescopic spray arm and the overlapping part of the spray body do not form a washing blind area in the annular area formed by the rotating water spray, further improve the cleaning effect of the dishwasher, effectively solve the problem that the spray holes on the telescopic spray arm and the spray holes on the spray body often appear misalignment during the telescopic process of the telescopic spray arm in the prior art, so that the telescopic spray arm and the overlapping part of the spray body have no water or less water, resulting in insufficient spraying in the annular area formed by the overlapping part when the spray arm rotates in a circular motion, and there is a washing blind area, which seriously affects the cleaning effect of the dishes arranged in the area.

[0007] In an alternative embodiment, two spray branch parts are respectively arranged at both ends of the spray body; the telescopic spray arm includes two, and the two telescopic spray arms are centrally symmetrically distributed at both ends of the spray body.

[0008] Beneficial effects: The two telescopic spray arms are centrally symmetrically arranged at both ends of the spray body, which can ensure the balance stability of the entire spray assembly during rotation.

[0009] In an alternative embodiment, the spray branch part includes a first spray branch part and a second spray branch part arranged at a set angle; the first spray branch part is used to install the telescopic spray arm, the second spray branch part is spaced apart in the length direction and provided with a plurality of second spray holes, and the angle between the first spray branch part and the second spray branch part is less than 180°.

[0010] Beneficial effects: By setting the second spray branch part and the plurality of second spray holes spaced apart on the second spray branch part, the problem of washing blind area caused by the original spraying area due to the installation of the telescopic spray arm can be compensated, and the cleaning effect of the dishwasher can be greatly improved. By limiting the angle between the two spray branch parts to θ, the value of θ is less than 180°, the angle between the two spray branch parts is greater than or equal to 180°, which cannot avoid the spraying dead angle, and cannot solve the problem of washing blind area caused by the setting of the telescopic spray arm.

[0011] In an alternative embodiment, the first spray branch part is configured as a hollow tubular structure with an open end, and the second spray branch part is configured as a hollow tubular structure with a closed end; the telescopic spray arm is telescopically and movably installed in the first spray branch part, and the length of the second spray branch part is not less than the length of the first spray branch part.

[0012] Beneficial effects: By setting the first spray branch part as a hollow tubular structure with an open end, the telescopic spray arm is conveniently installed in the first spray branch part, and by designing the length of the second spray branch part to be not less than the length of the first spray branch part, the second spray branch part can completely cover the annular area formed by the rotation of the first spray branch part, avoiding the problem that the second spray branch part is too short and still has a washing blind area. In addition, by setting the telescopic spray arm in the first spray branch part, compared with being set outside the first spray branch part, not only can the telescopic spray arm be hidden to improve the appearance, but also can avoid the problem that the exposed telescopic spray arm is easy to scratch and interfere with other parts inside the inner container during telescopic movement.

[0013] In an optional embodiment, the telescopic spray arm comprises a telescopic arm body and a first rolling piece, one end of the telescopic arm body is slidingly limited in the first spray branch part, and the other end is rotatably provided with the first rolling piece, and the first rolling piece is adapted to be in rolling contact with the inner wall of the inner container of the dishwasher.

[0014] Beneficial effects: By setting the first rolling piece, the telescopic spray arm can be in rolling contact with the inner container when it is stretched outwards, reducing the friction between the telescopic spray arm and the inner wall of the dishwasher, reducing the resistance of the inner wall of the inner container to the telescopic spray arm, and improving the smoothness of the circumferential movement of the spray assembly.

[0015] In an optional embodiment, the spray assembly of the dishwasher further comprises a first limiting piece and a second limiting piece, the first limiting piece and the second limiting piece are spaced apart along the length direction of the spray body and arranged on the spray body, wherein the first limiting piece is used to limit the limit displacement of the telescopic spray arm stretched outwards, and the second limiting piece is used to limit the limit displacement of the telescopic spray arm retracted inwards.

[0016] Beneficial effects: By setting the first limiting piece to limit the limit displacement of the telescopic spray arm stretched outwards, the telescopic spray arm is prevented from being washed out of the spray body due to excessive water pressure, and by setting the second limiting piece, the telescopic spray arm is prevented from retracting inwards too much, which is not easy to stretch out or affects the normal spraying effect of the spray body.

[0017] In an optional embodiment, the telescopic spray arm further comprises a first limiting fitting part and a second limiting fitting part, the first limiting fitting part and the second limiting fitting part are fixedly arranged on the outer peripheral wall of the telescopic arm body along the length direction of the telescopic arm body; wherein the first limiting fitting part is adapted to be in stop cooperation with the first limiting piece to limit the limit displacement of the telescopic spray arm stretched outwards, and the second limiting fitting part is adapted to be in stop cooperation with the second limiting piece to limit the limit displacement of the telescopic spray arm retracted inwards.

[0018] Beneficial effects: By setting the first limiting part and the second limiting part to stop cooperating with the first limiting piece and the second limiting piece respectively, the stability of the first limiting piece and the second limiting piece cooperating with the telescopic spray arm is improved, and the problem that the first limiting piece and the second limiting piece are directly abutted with the telescopic arm body and are easy to be damaged is avoided.

[0019] In an alternative embodiment, the first limiting piece includes a first pin fixedly arranged in the first spray branch, and the second limiting piece includes a second pin fixedly arranged in the first spray branch; wherein the first pin is arranged on one side of the first spray branch close to the end, and the second pin is arranged on one side of the first spray branch close to the center of the spray body; the first limiting part is a first limiting lug plate fixedly arranged on the outer periphery of the spray body, and the second limiting part is a second limiting lug plate fixedly arranged on the outer periphery of the spray body.

[0020] Beneficial effects: When the telescopic spray arm is stretched out under the action of water pressure, the first pin is abutted with the first limiting lug plate on the telescopic spray arm to limit, so that the telescopic spray arm cannot continue to stretch out, and the maximum outward stretching distance of the telescopic spray arm is limited. When the telescopic spray arm is retracted under the action of the inner container wall surface pressure, the second pin is abutted with the second limiting lug plate on the telescopic spray arm to limit, so as to limit the retraction depth of the telescopic spray arm, prevent over-retraction, and affect the subsequent normal stretching out.

[0021] In an alternative embodiment, a plurality of limiting holes are arranged on the first spray branch along the length direction, and the limiting holes are provided for the first pin to be inserted; the first pin is selectively inserted into one of the limiting holes to adjust the limit distance of the telescopic spray arm stretching out.

[0022] Beneficial effects: By arranging a plurality of limiting holes on the first spray branch, the first pin can be selectively inserted into one of the limiting holes according to the size of the inner container during assembly, so as to adjust the limit distance of the telescopic spray arm stretching out.

[0023] In an alternative embodiment, the telescopic spray arm further includes a plurality of second rolling pieces, which are arranged on the outer periphery of the telescopic arm body in a circumferential direction and are adapted to be supported on the inner circumferential wall of the first spray branch.

[0024] Beneficial effects: By arranging a plurality of second rolling pieces, the friction between the telescopic spray arm and the first spray branch can be reduced, the telescopic spray arm can be installed more firmly, the telescopic spray arm can be prevented from swinging up and down and left and right during telescopic movement, wear can be reduced, and the service life can be prolonged.

[0025] In a second aspect, the present application provides a dishwasher comprising a tub and the spray assembly of any of the above embodiments disposed in the tub; the telescopic spray arm of the spray assembly of the dishwasher is capable of extending outwardly to a preset extended position under the action of water pressure and is capable of retracting inwardly to a preset retracted position under the action of the pressing force of the inner wall of the tub. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0027] Figure 1 is a front view of the spray assembly in the embodiment of the present application;

[0028] Figure 2 is a side view of the spray assembly in the embodiment of the present application;

[0029] Figure 3 is a front view of Figure 1 ;

[0030] Figure 4 is a sectional view of Figure 1 ;

[0031] Figure 5 is a plan view or a bottom view of the spray assembly in the embodiment of the present application;

[0032] Figure 6 is a front view of Figure 5 ;

[0033] Figure 7 is a sectional view of Figure 5 ;

[0034] Figure 8 is an enlarged view of A in Figure 7 ;

[0035] Figure 9 is a front view of the assembly of the first spray branch and the telescopic spray arm in the embodiment of the present application;

[0036] Figure 10 is a sectional view of Figure 9 ;

[0037] Figure 11 is a plan view or a bottom view of the assembly of the first spray branch and the telescopic spray arm in the embodiment of the present application;

[0038] Figure 12 isFigure 11 A sectional view;

[0039] Figure 13 This is a side view of the first spray branch and the telescopic spray arm after assembly in an embodiment of the present invention;

[0040] Figure 14 for Figure 13 A sectional view;

[0041] Figure 15 This is a front view of the telescopic spray arm in an embodiment of the present invention;

[0042] Figure 16 This is a top or bottom view of the telescopic spray arm in an embodiment of the present invention;

[0043] Figure 17 This is a side view of the telescopic spray arm in an embodiment of the present invention.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Sprayer body; 10. Second spray hole; 11. Sprayer branch; 111. First spray branch; 1110. Slide groove; 1111. Limiting hole; 112. Second spray branch; 12. Sprayer main body; 120. Water inlet; 13. First pin; 14. Second pin;

[0046] 2. Telescopic spray arm; 20. First spray hole; 21. Telescopic arm body; 211. First limiting protrusion; 212. Second limiting protrusion; 22. First rolling element; 23. Second rolling element. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In addition, the technical features involved in the different embodiments of the application described below can be combined with each other as long as there is no conflict between them.

[0051] Now more and more people begin to pay attention to the quality of life, and have higher and higher requirements for the quality of life. As a daily household work, manual cleaning has a high labor intensity and time cost, and there is a problem of unqualified tableware cleaning and sanitation. Therefore, people tend to use machines instead of manual cleaning to save time, clean and sanitary. As an important part of kitchen appliance industry, dishwasher can fully liberate the hands of laborers, enjoy leisure time after meals, and get rid of tedious housework, which is popular among the public.

[0052] Under normal washing condition of the dishwasher, water flow is sprayed from the spray hole of the spray arm, and is washed together with the rotation of the spray arm to improve the spray area. The existing dishwasher inner tank is square, and the tableware placement position is also square to increase the number of tableware placement. However, since the spray arm rotates in a circular motion and the length of the spray arm is fixed, the spray area is circular. In order to increase the number of tableware placement and improve the space utilization, the tableware is arranged in a square space. Therefore, the spray arm is difficult to spray to the corner area of the inner tank, and the water flow is difficult to spray to the tableware in the corner, there is a dead zone of spraying, the cleaning is not clean, and the cleaning performance of the dishwasher is reduced.

[0053] In view of the problem that the tableware in the corner of the dishwasher inner tank has a dead zone of spraying, the related technology provides a method of automatically adjusting the length of the spray arm. Specifically, the spray arm includes a spray body and a telescopic spray arm sleeved on the spray body, the telescopic spray arm can move on the spray body, and a plurality of spray holes are arranged on the telescopic spray arm and correspondingly arranged on the plurality of spray holes on the spray body. The telescopic spray arm is controlled to extend and retract by water pressure and pressure against the inner tank wall, so as to adjust the overall length of the spray arm, thereby increasing the spray area of the corner of the inner tank, reducing the dead zone of spraying, and improving the cleaning performance of the dishwasher.

[0054] However, the relevant technicians found that the above design has the following problems in actual use. Due to the high uncertainty and low controllability of the extension distance or retraction distance of the telescopic spray arm, it is difficult to ensure that the spray holes on the telescopic spray arm correspond completely to the spray holes on the spray body when the telescopic spray arm is extended or retracted. The spray holes on the telescopic spray arm and the spray holes on the spray body often appear misaligned or completely misaligned, which causes no water to be sprayed or less water to be sprayed in the overlapping part of the telescopic spray arm and the spray body. This results in insufficient spraying in the annular area formed by the overlapping part when the telescopic spray arm rotates in a circular motion, and a washing blind area exists, which causes the dishes located in the annular area to be not cleaned, and seriously affects the cleaning effect of the dishwasher.

[0055] Therefore, how to ensure that the dishwasher does not have a spraying dead angle, and avoid the problem that the area where the telescopic spray arm and the spray body overlap has no water sprayed or less water sprayed, which causes the cleaning effect of the dishwasher to be poor, is a problem that technicians in the field need to solve.

[0056] The embodiments of the present application will be described below in conjunction with Figures 1 to 17 .

[0057] According to the embodiments of the present application, in one aspect, the present application provides a spraying assembly of a dishwasher, which comprises a spraying body 1 and a telescopic spray arm 2. The spraying body 1 is provided with at least two spray branch parts 11 at both ends respectively. The telescopic spray arm 2 is arranged on one spray branch part 11 at both ends of the spraying body 1 respectively, and the telescopic spray arm 2 can move telescopically relative to the spray branch part 11. The telescopic spray arm 2 has a spraying cavity inside, and the telescopic spray arm 2 is provided with a first spray hole 20 which communicates with the spraying cavity.

[0058] In the above embodiments, the telescopic spray arm 2 can be extended outward, thereby increasing the spraying range, which can effectively solve the problem of the spraying dead angle of the dishes in the corner of the inner container. Furthermore, at least two spray branch parts 11 are arranged at both ends of the spraying body 1 respectively, one of which is used to install the telescopic spray arm 2, and the other spray branch part 11 is used for normal water spraying. Therefore, when the spraying assembly rotates to spray water, no washing blind area is formed in the annular area formed by the overlapping part of the telescopic spray arm 2 and the spraying body 1, which further improves the cleaning effect of the dishwasher. Therefore, the problem that the spray holes on the telescopic spray arm 2 often misalign with the spray holes on the spraying body 1 during the telescopic process of the telescopic spray arm 2 in the prior art, which causes no water to be sprayed or less water to be sprayed in the overlapping part of the telescopic spray arm 2 and the spraying body 1, results in insufficient spraying in the annular area formed by the overlapping part when the telescopic spray arm rotates in a circular motion, and a washing blind area exists, which seriously affects the cleaning effect of the dishes arranged in the area, is effectively solved.

[0059] In some preferred embodiments of this example, the force that drives the telescopic spray arm 2 to extend outward comes from the fluid pressure inside the spray body 1, i.e., water pressure, and the force that drives the telescopic spray arm 2 to retract inward comes from the pressure of the inner wall of the tank. However, the force that drives the telescopic spray arm 2 is not limited to the fluid pressure inside the telescopic spray arm 2 and the pressure of the inner wall of the tank, and can also be driven by a motor or the like.

[0060] Specifically, such as Figures 1 to 8 As shown, in this embodiment, the spray body 1 includes a main spray column 12 and spray branches 11 disposed at both ends of the main spray column 12. The main spray column 12 is located in the middle, and at least two spray branches 11 are respectively disposed at each end of the main spray column 12, that is, at least two spray branches 11 are respectively disposed at each end of the main spray column 12. Multiple spray branches 11 are branched at both ends of the main spray column 12. A telescopic spray arm 2 is disposed on one of the spray branches 11, and the other spray branches 11 are provided with spray holes, which can spray normally without being affected by the telescopic spray arm 2, ensuring that no washing blind zone is formed in the annular area formed by the overlapping part of the telescopic spray arm 2 and the spray branch 11.

[0061] In some embodiments, the telescopic spray arm 2 is slidably sleeved outside the spray body 1, or the telescopic spray arm 2 is slidably disposed inside the spray body 1. The spray chamber of the telescopic spray arm 2 is connected to the inner cavity of the spray body 1. When water enters, the telescopic spray arm 2 can extend outward under the action of water pressure until it touches the wall of the dishwasher inner tub, thereby increasing the spray area, reducing the spray dead angles in the corners of the inner tub, and improving the washing performance of the dishwasher.

[0062] In some embodiments, two spray branches 11 are respectively provided at both ends of the spray body 1;

[0063] The telescopic spray arm 2 includes two arms, which are centrally symmetrically distributed at both ends of the spray body 1.

[0064] In the above embodiment, the two telescopic spray arms 2 are centrally symmetrically arranged at both ends of the spray body 1, which can ensure the balance and stability of the entire spray assembly during rotational spraying.

[0065] It should be noted that this embodiment is illustrated by taking the example of having two spray branches 11 and one telescopic spray arm 2 at each end of the spray body 1. Of course, in other modified embodiments, three or more spray branches 11 can be provided at each end, and two or more telescopic spray arms 2 can be provided at each end. This embodiment does not limit this.

[0066] In some embodiments, the spray branch 11 comprises a first spray branch 111 and a second spray branch 112 arranged at a set angle; wherein the first spray branch 111 is used to install the telescopic spray arm 2, and the second spray branch 112 is provided with a plurality of second spray holes 10 spaced apart along the length direction; and the angle between the first spray branch 111 and the second spray branch 112 is less than 180°.

[0067] In the above embodiments, the spray body 1 and the second spray branch 112 without the telescopic spray arm 2 are respectively provided with a plurality of second spray holes 10 spaced apart along the length direction, while the first spray branch 111 with the telescopic spray arm 2 can be either provided with holes or not provided with holes, which is not limited in the present embodiment. By providing the second spray branch 112 and the plurality of second spray holes 10 spaced apart on the second spray branch 112, the problem of forming a washing blind area due to the installation of the telescopic spray arm 2 can be solved, and the cleaning effect of the dishwasher can be greatly improved.

[0068] Further, by arranging two spray branches 11 at both ends of the spray body 1, the two spray branches 11 at both ends and the spray body 1 form a Y-shaped structure, one of the two spray branches 11 is used to install the telescopic spray arm 2, and the other is used to ensure the water spraying amount in the annular area formed when the spray branch 11 rotates, avoiding the problem of forming a washing blind area due to the arrangement of the telescopic spray arm 2. In the present embodiment, the angle between the two spray branches 11 is limited to θ, and the value of θ is less than 180°, so as to avoid the problem that the angle between the two spray branches 11 is greater than or equal to 180°, which cannot avoid the dead angle of spraying and cannot solve the problem of forming a washing blind area due to the arrangement of the telescopic spray arm 2.

[0069] In some embodiments, the first spray branch 111 is configured as a hollow tubular structure with an open end, and the second spray branch 112 is configured as a hollow tubular structure with a closed end; the telescopic spray arm 2 is telescopically and movably installed in the first spray branch 111, and the length of the second spray branch 112 is not less than the length of the first spray branch 111.

[0070] In the above embodiments, by arranging the first spray branch 111 as a hollow tubular structure with an open end, the installation of the telescopic spray arm 2 in the first spray branch 111 is facilitated, and by designing the length of the second spray branch 112 to be not less than the length of the first spray branch 111, the second spray branch 112 can completely cover the annular area formed when the first spray branch 111 rotates, avoiding the problem that the second spray branch 112 is too short and still has a washing blind area.

[0071] In addition, by arranging the telescopic spray arm 2 in the first spray branch 111, compared with being arranged outside the first spray branch 111, not only the telescopic spray arm 2 can be hidden, the appearance is improved, but also the problem that the telescopic spray arm 2 exposed is easy to scratch and interfere with other components inside the inner container during telescopic movement can be avoided.

[0072] It should be noted that in the embodiment, the two first spray branches 111 and the two second spray branches 112 at both ends of the spray body 1 are centrally symmetrically distributed, and the whole spray arm is similar to an arrow-shaped structure. The middle of the spray body 1 is provided with a water inlet 120 connected with a water inlet assembly of the dishwasher, and the water inlet 120 is suitable for feeding water into the spray assembly.

[0073] In some embodiments, as shown in Figure 8 The telescopic spray arm 2 includes a telescopic arm body 21 and a first rolling member 22, one end of the telescopic arm body 21 is slidingly limited in the first spray branch 111, and the other end is rotatably provided with the first rolling member 22, and the first rolling member 22 is suitable for rolling contact with the inner wall of the inner container of the dishwasher.

[0074] In the above embodiment, by arranging the first rolling member 22, the telescopic spray arm 2 can be in rolling contact with the inner container when it is extended outward, the friction between the telescopic spray arm 2 and the wall of the inner container of the dishwasher is reduced, the resistance of the inner wall of the inner container to the telescopic spray arm 2 is reduced, and the smoothness of the circumferential movement of the spray assembly is improved.

[0075] In some embodiments, the first rolling member 22 is a roller mounted on the outer end of the telescopic arm body 21. Preferably, the first rolling member 22 is a universal wheel, which further improves the smoothness of the movement of the spray assembly and avoids jamming.

[0076] By arranging the telescopic spray arm 2, the first spray hole 20 is arranged on the telescopic spray arm 2, the length of the whole spray arm can be automatically adjusted, so as to increase the area of the spraying area and improve the space utilization. With the rotation of the spray assembly, the telescopic spray arm 2 is continuously extended and retracted, and the telescopic spray arm 2 can always be kept in contact with the wall of the inner container, so that the distance between the first spray hole 20 on the telescopic spray arm 2 and the wall is the shortest, thereby realizing the cleaning of the dishes in the corner of the inner container and reducing the dead angle of the spray.

[0077] It should be noted that in the embodiment, the driving force for driving the telescopic spray arm 2 to extend outward is the fluid pressure in the spray assembly, i.e. the water pressure. The telescopic spray arm 2 is provided with a first rolling member 22 at the end thereof. When the first rolling member 22 is in contact with the inner wall surface, the further extension of the telescopic spray arm 2 is limited. Meanwhile, under the wall surface pressure, the telescopic spray arm 2 can be retracted inward. By changing the maximum telescopic length of the telescopic spray arm 2, the included angle of the first spray branch 111 and the second spray branch 112, the number, position and spray angle of the first spray hole and the second spray hole, different cleaning effects can be achieved, the spray area is increased, and the cleaning performance of the dishwasher is improved.

[0078] In some embodiments, the spray assembly of the dishwasher further comprises a first limiting member and a second limiting member, which are arranged on the spray body 1 in the length direction of the spray body 1. The first limiting member is used to limit the limit displacement of the telescopic spray arm 2 extending outward, and the second limiting member is used to limit the limit displacement of the telescopic spray arm 2 retracting inward.

[0079] In the above embodiment, the first limiting member is arranged to limit the limit displacement of the telescopic spray arm 2 extending outward, so as to avoid the problem that the telescopic spray arm 2 is forced out of the spray body 1 due to excessive water pressure. The second limiting member is arranged to avoid the problem that the telescopic spray arm 2 is retracted too much inward, is not easy to extend, or affects the normal spraying effect of the spray body 1.

[0080] Specifically, the first limiting member and the second limiting member can be integrally formed on the spray body 1, for example, can be a boss or a limiting stop column integrally formed on the spray body 1, or can be detachably mounted and fixed on the spray body 1, for example, can be a pin or a bolt. The specific structure of the first limiting member and the second limiting member is not limited in the embodiment, as long as the movement of the telescopic spray arm 2 can be limited.

[0081] Further, the first limiting member is located at one end close to the free end of the first spray branch 111, i.e. the end of the first spray branch 111, and the second limiting member is located at one end close to the connection between the first spray branch 111 and the spray trunk 12.

[0082] Preferably, in the embodiment, the first limiting member and the second limiting member are detachably mounted and fixed on the spray body 1, so as to facilitate the adjustment of the limit displacement of the telescopic spray arm 2 extending and retracting.

[0083] In some embodiments, the telescopic spray arm 2 further comprises a first limiting fitting part and a second limiting fitting part, which are fixedly arranged on the outer circumferential wall of the telescopic arm body 21 along the length direction of the telescopic arm body 21; wherein the first limiting fitting part is adapted to stop cooperating with the first limiting piece to limit the limit displacement of the telescopic spray arm 2 extending outward, and the second limiting fitting part is adapted to stop cooperating with the second limiting piece to limit the limit displacement of the telescopic spray arm 2 retracting inward.

[0084] In the above-mentioned embodiments, the first limiting fitting part and the second limiting fitting part are arranged to stop cooperating with the first limiting piece and the second limiting piece respectively, which improves the stability of the cooperation between the first limiting piece, the second limiting piece and the telescopic spray arm 2, and avoids the problem that the first limiting piece and the second limiting piece are directly abutted with the telescopic arm body 21, which is easy to cause damage to the telescopic arm body 21.

[0085] In some embodiments, the first limiting piece comprises a first pin 13 fixedly arranged in the first spray branch part 111, and the second limiting piece comprises a second pin 14 fixedly arranged in the first spray branch part 111; wherein the first pin 13 is arranged on one side of the first spray branch part 111 close to the end, and the second pin 14 is arranged on one side of the first spray branch part 111 close to the center of the spray body 1. The first limiting fitting part is a first limiting lug plate 211 fixedly arranged on the outer circumferential wall of the spray body 1, and the second limiting fitting part is a second limiting lug plate 212 fixedly arranged on the outer circumferential wall of the spray body 1.

[0086] In the above-mentioned embodiments, when the telescopic spray arm 2 extends outward under the action of water pressure, the first pin 13 is abutted with the first limiting lug plate 211 on the telescopic spray arm 2 to limit the extension, so that the telescopic spray arm 2 cannot continue to extend, and the maximum outward extension distance of the telescopic spray arm 2 is limited. When the telescopic spray arm 2 retracts inward under the action of the inner container wall surface pressure, the second pin 14 is abutted with the second limiting lug plate 212 on the telescopic spray arm 2 to limit the retraction depth of the telescopic spray arm 2, so as to prevent over-retraction and affect the subsequent normal extension.

[0087] In some embodiments, as shown in Figure 5 and Figure 6 a plurality of limiting holes 1111 are arranged on the first spray branch part 111 along the length direction, and the limiting holes 1111 can be inserted by the first pin 13; the first pin 13 is selectively inserted into one of the limiting holes 1111 to adjust the limit distance of the telescopic spray arm 2 extending outward.

[0088] In the above embodiment, by means of the plurality of limiting holes 1111 arranged at intervals on the first spray branch part 111, during assembly, the first pin 13 can be selectively inserted into one of the limiting holes 1111 according to the size of the inner container, so as to adjust the limit distance of the telescopic spray arm 2 extending outward.

[0089] In some more specific embodiments, the plurality of limiting holes 1111 are arranged at intervals at the end of the first spray branch part 111, the diameter of the limiting hole 1111 is 2 mm, and the distance between adjacent two limiting holes 1111 is defined as the pitch Lx, which is greater than 4 mm. The pin can be selectively inserted into any limiting hole 1111, so as to adjust the maximum extension distance of the telescopic spray arm 2.

[0090] In some embodiments, as shown in Figures 12 to 17 The telescopic spray arm 2 further comprises a plurality of second rolling members 23, which are arranged at intervals along the circumference of the telescopic arm body 21 and are adapted to be supported and rolled on the inner circumferential wall of the first spray branch part 111.

[0091] In the above embodiment, by means of the plurality of second rolling members 23, the friction between the telescopic spray arm 2 and the first spray branch part 111 can be reduced, the telescopic spray arm 2 can be installed more firmly, the telescopic spray arm 2 can be prevented from swinging up and down and left and right during telescopic movement, wear can be reduced, and the service life can be prolonged.

[0092] In some more specific embodiments, the first spray branch part 111 is provided with a cross-shaped sliding groove 1110 in cross section, the telescopic spray arm 2 is slidingly installed in the sliding groove 1110, the first limiting flange plate 211 and the second limiting flange plate 212 are four respectively, the four first limiting flange plates 211 and the four second limiting flange plates 212 are uniformly distributed on the circumference of the telescopic arm body 21 and are located on the four sides of the telescopic arm body 21 respectively, the ends of the corresponding four first limiting flange plates 211 and the four second limiting flange plates 212 are respectively provided with second rolling members 23, and the four second rolling members 23 are slidingly limited in the four slots of the cross-shaped sliding groove 1110 one by one. By means of the cross-shaped sliding groove 1110 arranged to accommodate the second rolling members 23, the stability of the telescopic spray arm 2 cooperating with the spray body 1 can be further improved,

[0093] In some more specific embodiments, the first spray branch part 111 and the telescopic arm body 21 are both hollow tubular structures with square cross sections. The first rolling member 22 and the second rolling member 23 are both rollers, and the diameter of the first rolling member 22 is greater than the diameter of the second rolling member 23.

[0094] In some more specific embodiments, the first spray branch 111 is internally provided with a rectangular slot 1110 matching the outer shape and size of the telescopic arm body 21, and the spray body 1 is installed in the rectangular slot 1110 and can extend and contract along the slot direction. The four side walls of the rectangular slot are respectively provided with grooves capable of accommodating the second rolling member 23, thereby forming a cross-shaped slot 1110.

[0095] Further, the spray body 1 is provided with at least two first spray holes 20, and water flows into the spray body 1 from the water inlet 120 of the spray body 1, and under the action of internal water pressure, the telescopic spray arm 2 can be driven to extend outward along the rectangular slot. The first spray hole 20 of the telescopic spray arm 2 is exposed from the first spray branch 111, so as to spray water outward. With the rotation of the spray body 1, after the telescopic spray arm 2 extends by a certain distance, the first rolling member 22 at the end of the telescopic spray arm 2 contacts the inner container wall surface, limiting the extension of the telescopic spray arm 2. At this time, the distance between the first spray hole 20 on the telescopic spray arm 2 and the inner container wall surface is the shortest, which increases the spraying area of the spray arm and reduces the dead angle of spraying. Under the pressure of the inner container wall surface, the telescopic spray arm 2 contracts inward along the rectangular slot, and when the first spray hole 20 on the telescopic spray arm 2 is contracted in the rectangular slot, the first spray hole 20 is blocked by the rectangular slot and cannot spray water. Of course, in other variant embodiments, a plurality of second spray holes 10 can be provided on the first spray branch 111, so that when the telescopic spray arm 2 is retracted, the first spray hole 20 can correspond to the second spray hole 10, and water can still be sprayed outward when the telescopic spray arm 2 is retracted, thereby increasing the spraying flow.

[0096] In this embodiment, by changing the maximum telescopic length of the telescopic spray arm 2, the included angle of the first spray branch 111 and the second spray branch 112, the number, position and spraying angle of the first spray hole 20 and the second spray hole 10, different cleaning effects can be achieved, the spraying area is increased, and the cleaning performance of the dishwasher is improved. Compared with the non-telescopic spray arm, the problem of dead angle of spraying and unclean dishes in the corner of the inner container is effectively solved, and the effect is remarkable.

[0097] It should be noted that the number of first spray holes 20 on the telescopic spray arm 2 in the embodiment can be 1, 2, 3 or other number, and the spray direction is not limited, and the purpose is to increase the spray range of the tableware. The first rolling member 22 at the end of the telescopic spray arm 2 is not limited to a roller, and can be other types of rolling devices, such as universal ball bearings, etc., and the purpose is to reduce the friction between the telescopic spray arm 2 and the inner wall of the tank. The power driving the telescopic spray arm 2 to move is not limited to water pressure and the pressure of the inner wall of the tank, and can be a motor gear driven manner, etc., and preferably, in order to save cost and simplify the structure, the power driving the telescopic spray arm 2 to move in the embodiment comes from the water pressure and the pressure of the inner wall of the tank. The structure of the telescopic spray arm 2 is not limited to straight, and can be curved, and the purpose is that the telescopic spray arm 2 can be elongated outward. The mounting mode of the telescopic spray arm 2 and the first spray branch 111 is not limited to the mounting mode of the second rolling member 23 and the cross-shaped sliding groove 1110, and can be a small roller, a small roller or any other sliding device that reduces friction. The mounting mode of the telescopic spray arm 2 and the first spray branch 111 is not limited to that the telescopic spray arm 2 is built-in in the spray branch 11 of the spray body 1, and the telescopic spray arm 2 can be sleeved on the spray branch 11 of the spray body 1.

[0098] In some more specific embodiments, a horizontal first rolling member 22 is arranged at the end of the telescopic arm body 21, the first rolling member 22 is a roller, and the diameter of the roller is greater than 5 mm, and the roller can rotate around the vertical axis at the end, thereby reducing the friction between the telescopic spray arm 2 and the inner wall of the tank.

[0099] According to the embodiment of the present application, on the other hand, a dishwasher is provided, which comprises a tank and the spray assembly of any of the above embodiments arranged in the tank; the telescopic spray arm 2 of the spray assembly of the dishwasher can be extended outward to a preset extended position under the action of water pressure, and can be retracted inward to a preset retracted position under the action of the pressure of the inner wall of the tank.

[0100] The dishwasher provided in the embodiment can effectively solve the problem of the spray dead zone of the tableware in the corner of the tank of the dishwasher, and avoid the formation of a washing blind area in the annular area formed by the overlapping part of the telescopic spray arm 2 and the spray body 1, thereby affecting the cleaning effect of the dishwasher.

[0101] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A spray assembly for a dishwasher, characterized in that, Comprise: The spray body (1) is provided with at least two spray branch parts (11) at both ends respectively; The telescopic spray arm (2) is respectively arranged on one spray branch part (11) at both ends of the spray body (1), and the telescopic spray arm (2) is telescopic relative to the spray branch part (11); The telescopic spray arm (2) has a spray cavity, and the telescopic spray arm (2) is provided with a first spray hole (20) communicated with the spray cavity; The spray branch part (11) comprises a first spray branch part (111) and a second spray branch part (112) arranged at a set angle; Wherein, the first spray branch part (111) is used for mounting the telescopic spray arm (2), the second spray branch part (112) is provided with a plurality of second spray holes (10) along the length direction, and the angle between the first spray branch part (111) and the second spray branch part (112) is less than 180°. 2.The spray assembly of the dish washer of claim 1, wherein, Both ends of the spray body (1) are respectively provided with two spray branch parts (11); The telescopic spray arm (2) comprises two, and the two telescopic spray arms (2) are centrally symmetrically distributed at both ends of the spray body (1). 3.The spray assembly of the dish washer of claim 1, wherein, The first spray branch part (111) is configured as a hollow tubular structure with an open end, and the second spray branch part (112) is configured as a hollow tubular structure with a closed end; The telescopic spray arm (2) is telescopically movably mounted in the first spray branch part (111), and the length of the second spray branch part (112) is not less than the length of the first spray branch part (111). 4.The spray assembly of the dish washer of claim 1, wherein, The telescopic spray arm (2) comprises: Telescopic arm body (21); First rolling member (22), one end of the telescopic arm body (21) is slidingly limited in the first spray branch part (111), the other end is rotatably provided with the first rolling member (22), and the first rolling member (22) is suitable for rolling contact with the inner wall of the inner container of the dishwasher. 5.The spray assembly of the dish washer according to claim 4, wherein, The spray assembly of the dishwasher further comprises: First limiting member and second limiting member, which are spaced apart along the length direction of the spray body (1) and arranged on the spray body (1), wherein the first limiting member is used for limiting the limit displacement of the telescopic spray arm (2) outwardly extending, and the second limiting member is used for limiting the limit displacement of the telescopic spray arm (2) inwardly retracting. 6.The spray assembly of the dish washer of claim 5, wherein, The telescopic spray arm (2) further comprises: First limiting fitting part and second limiting fitting part, which are fixedly arranged on the outer peripheral wall of the telescopic arm body (21) along the length direction of the telescopic arm body (21); Wherein, the first limiting fitting part is suitable for stop cooperation with the first limiting member to limit the limit displacement of the telescopic spray arm (2) outwardly extending, and the second limiting fitting part is suitable for stop cooperation with the second limiting member to limit the limit displacement of the telescopic spray arm (2) inwardly retracting. 7.The spray assembly of the dish washer of claim 6, wherein, The first limiting member comprises a first pin (13) fixedly arranged in the first spray branch part (111), and the second limiting member comprises a second pin (14) fixedly arranged in the first spray branch part (111); The first limiting fitting part is a first limiting protruding plate (211) fixedly arranged on the outer periphery of the spraying main body (1), and the second limiting fitting part is a second limiting protruding plate (212) fixedly arranged on the outer periphery of the spraying main body (1). 8.The spray assembly of the dish washer of claim 7, wherein, A plurality of limiting holes (1111) are arranged on the first spraying branch part (111) along the length direction, and the first pin (13) is inserted into the limiting holes (1111). The first pin (13) is selectively inserted into one of the limiting holes (1111) to adjust the limit distance of the telescopic spraying arm (2) extending outward.

9. The spray assembly of any one of claims 4 to 7, wherein, The telescopic spraying arm (2) further comprises: A plurality of second rolling members (23) are arranged on the outer periphery of the telescopic arm main body (21) along the circumferential direction, and are adapted to be supported on the inner circumferential wall of the first spraying branch part (111).

10. A dishwasher, characterized in that The spraying assembly comprises an inner container and the spraying assembly of any one of claims 1 to 9. The telescopic spraying arm (2) of the spraying assembly of the dishwasher extends outward to a preset extended position under the action of water pressure, and retracts inward to a preset retracted position under the action of the pressing force of the inner wall of the inner container.

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