A nozzle, a nozzle assembly having the same, and a washing machine

Abstract

The present invention provides a spray head, a spray head assembly having the same, and a washing machine, relating to the technical field of washing machines. The spray head includes: an upper spray head cover provided with a water inlet; a lower spray head cover buckled with the upper spray head cover to form a sealed cavity; wherein, M spray branches are formed in the sealed cavity, where M is an integer and M≥2; the M spray branches are radially distributed outward with the water inlet as the water inlet center, and the inlet end of each spray branch is communicated with the water inlet; N spray holes with unequal spray diameters are formed at the position of the corresponding lower spray head cover for each spray branch. The N spray holes include a first group of spray holes, a second group of spray holes, and a third group of spray holes. The first group of spray holes are direct spray type spray holes, the second group of spray holes are inclined spray type spray holes, and the third group of spray holes are rotary spray type spray holes. By designing the spray holes, the problems that the spray head cannot rotate, the spray range is narrow, and the spray ability is weak are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of washing machines, and in particular to a spray head, a spray head assembly having the same, and a washing machine. Background Art

[0002] At present, most washing machines on the market will add a spray head inside the machine. Spraying during washing can not only improve the solubility of the detergent, but also enhance the washing rate of the clothes. However, most of the spray heads used in washing machines are non-rotating direct-injection spray-hole type spray heads, which not only have a narrow spraying range, but also a weak spraying force. Installed in a washing machine, it can only improve the dissolution efficiency of the detergent, and the improvement of the washing rate of the clothes is not significant.

[0003] Therefore, there is an urgent need to provide a new technical solution to solve the problems that the spray head cannot rotate, has a narrow spraying range, and a weak spraying ability. Summary of the Invention

[0004] In view of this, the present invention provides a spray head. Through the structural design of the spray head, spray holes with different functions are provided on its spray branch, so that while the spray head rotates, its spraying range and spraying ability are enhanced, and the problems that the spray head in the prior art cannot rotate, has a narrow spraying range, and a weak spraying ability are solved.

[0005] The technical solution adopted by the present invention to achieve the above object is: a spray head, which includes: an upper spray head cover provided with a water inlet; a bottom spray head cover buckled with the upper spray head cover to form a sealed cavity; wherein,

[0006] M spray branches are formed in the sealed cavity, where M is an integer and M≥2; the M spray branches are radially radiated outward with the water inlet as the water inlet center, and the inlet end of each spray branch is communicated with the water inlet;

[0007] Each of the spray branches forms N spray holes with unequal spray diameters at the position of the corresponding bottom spray head cover (2). The N spray holes include a first group of spray holes, a second group of spray holes, and a third group of spray holes. The first group of spray holes is a direct-injection spray hole, the second group of spray holes is an oblique-injection spray hole, and the third group of spray holes is a rotary-injection spray hole. The rotary-injection spray holes are formed on the spray branch in a manner that causes the spray head to rotate. The distance of the third group of spray holes from the center position of the water inlet is greater than the distance of the second group of spray holes from the center position of the water inlet, and the distance of the second group of spray holes from the center position of the water inlet is greater than the distance of the first group of spray holes from the center position of the water inlet.

[0008] Further optionally, the M spray branches are distributed at equal angles relative to the center position of the water inlet.

[0009] Further optionally, the direct injection spray holes on the M spray branches form a plurality of first spray rings distributed circumferentially; and the average distance from the direct injection spray holes of each first spray ring to the water inlet is equal; the oblique injection spray holes on the M spray branches form a plurality of second spray rings distributed circumferentially, and the average distance from the oblique injection spray holes of each second spray ring to the water inlet is equal; the swirl injection spray holes on the M spray branches form a plurality of third spray rings distributed circumferentially, and the average distance from the swirl injection spray holes of each third spray ring to the water inlet is equal.

[0010] Further optionally, the sum of the number of the first spray rings, the number of the second spray rings, and the number of the third spray rings is MP + 1, where P is an integer and P ≥ 1, and the number of the third spray rings is less than the number of the first spray rings and the number of the second spray rings.

[0011] Further optionally, each first spray ring is provided with M - 1 direct injection spray holes, each second spray ring is provided with M - 1 oblique injection spray holes, and each third spray ring is provided with M swirl injection spray holes; the oblique injection spray holes and the direct injection spray holes on every adjacent M first spray rings and second spray rings are arranged staggeredly, and the total number of the swirl injection spray holes, the oblique injection spray holes, and the direct injection spray holes on each of the M spray branches is the same.

[0012] Further optionally, the included angle between the central axis of the swirl injection spray hole and the horizontal plane of the spray branch where it is located is α, and 15° ≤ α ≤ 60°.

[0013] Further optionally, there are multiple swirl injection spray holes, and the included angle between the central axes of the multiple swirl injection spray holes and the horizontal plane of the spray branch where they are located is equal to α.

[0014] Further optionally, there is one third spray ring, and the included angle between the central axes of the swirl injection spray holes on the third spray ring and the horizontal plane of the spray branch where they are located is equal to α.

[0015] Further optionally, each spray branch is provided with multiple swirl injection spray holes, and the included angle between the central axes of the multiple swirl injection spray holes and the horizontal plane of the spray branch where they are located is equal to α.

[0016] Further optionally, the included angle between the central axis of the oblique injection spray hole and the horizontal plane of the spray branch where it is located is β, and 60° < β < 90°.

[0017] Further optionally, when the number of the second spray rings is not less than two, the central axes of the inclined spray holes on the same second spray ring form an equal angle β with the horizontal plane of the spray branch where they are located; in the direction away from the water inlet, the difference 0° ≤ △β ≤ 10° between the central axes of the inclined spray holes on adjacent second spray rings and the horizontal plane of the spray branch where they are located.

[0018] Further optionally, there are three spray branches, and each spray branch is distributed at an equal angle relative to the water inlet center in a Y shape, and the lengths of each spray branch are equal; among them, four first spray rings are formed, two second spray rings are formed, and one third spray ring is formed; and two direct spray holes are provided on each of the first spray rings, two inclined spray holes are provided on each of the second spray rings, and three rotary spray holes are provided on the third spray ring; the inclined spray holes and the direct spray holes on every three adjacent spray rings are arranged staggeredly, and the total number of spray holes on each of the three spray branches is the same.

[0019] Further optionally, in the direction away from the water inlet, the central axes of the inclined spray holes on adjacent second spray rings and the horizontal plane of the spray branch where they are located form angles β of 85° and 80° respectively, and the central axis of the rotary spray hole and the horizontal plane of the spray branch where it is located form an angle α, and α = 30°.

[0020] Further optionally, the water inlet diameter of each spray branch gradually decreases in the direction away from the water inlet.

[0021] The present invention also provides a nozzle assembly, which has the nozzle described in any one of the above, and further includes:

[0022] A fastening seat, after the nozzle bottom cover and the nozzle upper cover of the nozzle are hermetically assembled, the nozzle upper cover is rotatably arranged on the fastening seat.

[0023] A water inlet adapter, which includes an adapter inlet and an adapter outlet, wherein the adapter outlet is hermetically connected to the water inlet of the nozzle upper cover.

[0024] The present invention also provides a washing machine, which is provided with the nozzle or the nozzle assembly described in any one of the above.

[0025] Further optionally, the washing machine includes a washing machine top cover, and an installation groove and a liquid inlet are provided on one side of the washing machine top cover facing the inside of the washing machine; the nozzle is rotatably embedded in the installation groove, so that the water inlet of the nozzle upper cover passes through the liquid inlet and is connected to an external water source.

[0026] Further optionally, the nozzle bottom cover of the nozzle is flush with the end face of the washing machine top cover facing the inside of the washing machine.

[0027] The present invention provides a nozzle, and through the structural design of the nozzle, the following technical effects are achieved:

[0028] 1. The water inlet of the nozzle is directly communicated with a plurality of spray branches, so that the water pressure on each spray branch is equal, improving the spray effect;

[0029] 2. Rotating spray holes that can be pushed to rotate are provided at the edge of the spray branch to drive the nozzle to rotate; by adjusting the angle of the inclined spray holes, the spray range when the nozzle rotates is expanded, and the straight spray holes spray the clothes intensively, improving the spray cleaning effect;

[0030] 3. By adjusting the number of spray rings on the nozzle and the number of spray holes on each spray ring, the dynamic pressure inside the nozzle is adjusted to enhance the spraying force of the nozzle ejection holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] By referring to the accompanying drawings and describing its exemplary embodiments in detail, the above and other objects, features, and advantages of the present invention will become more apparent. The following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 is the external view of the nozzle assembly in the embodiment of the present invention;

[0033] Figure 2 is the exploded view of the nozzle assembly in the embodiment of the present invention;

[0034] Figure 3 is the top cover view of the nozzle in the embodiment of the present invention;

[0035] Figure 4 is the bottom view of the nozzle in the embodiment of the present invention;

[0036] Figure 5 is the top view of the bottom cover of the nozzle in the embodiment of the present invention;

[0037] Figure 6 is the sectional view of the bottom cover of the nozzle in the embodiment of the present invention;

[0038] Figure 7 is the side sectional view of the nozzle in the embodiment of the present invention;

[0039] Figure 8 is the installation view of the nozzle in the embodiment of the present invention;

[0040] In the figure:

[0041] 1 - Upper cover of the nozzle; 11 - Water inlet; 2 - Bottom cover of the nozzle; 3 - Spraying cavity; 4 - Spraying branch; 5 - Rotary spraying hole; 6 - Oblique spraying hole; 7 - Straight spraying hole; 8 - Third spraying ring; 9 - Second spraying ring; 10 - First spraying ring; 11 - Fastening seat; 12 - Gasket; 13 - Bush; 14 - Water inlet adapter; 15 - Top cover of the washing machine; 151 - Installation groove; 152 - Liquid inlet; 16 - Sealing ring Detailed implementation manners

[0042] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0043] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "the" and "said" used in the embodiments of the present invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Plural" generally includes at least two, but does not exclude the case of including at least one.

[0044] It should be understood that the term " / and / " used herein is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0045] It should also be noted that the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a commodity or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such commodity or system. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of another identical element in the commodity or system including the said element.

[0046] Embodiment

[0047] As Figure 1-8As shown in the figure, this embodiment provides a nozzle, which includes: an upper nozzle cover 1 provided with a water inlet; a lower nozzle cover 2 that is snap-fitted with the upper nozzle cover 1 to form a sealed cavity; wherein, M spray branches 4 are formed in the sealed cavity, where M is an integer and M≥2; the M spray branches 4 are radially distributed outward with the water inlet as the water inlet center, and the inlet end of each spray branch 4 is communicated with the water inlet; N spray holes with unequal spray diameters are formed at the position of the corresponding lower nozzle cover 2 of each spray branch 4. The N spray holes include a first group of spray holes, a second group of spray holes, and a third group of spray holes. The first group of spray holes are direct spray holes 7, the second group of spray holes are inclined spray holes 6, and the third group of spray holes are rotary spray holes 5. The rotary spray holes 5 are formed on the spray branch 4 in a manner that causes the nozzle to rotate. The distance of the third group of spray holes from the center position of the water inlet is greater than the distance of the second group of spray holes from the center position of the water inlet, and the distance of the second group of spray holes from the center position of the water inlet is greater than the distance of the first group of spray holes from the center position of the water inlet. The spray cavity 3 of the nozzle can equalize the water pressure, that is, the water inlet of the nozzle is directly communicated with multiple spray branches, so that the water pressure on each spray branch is equal, improving the spray effect. At the same time, different functional spray holes are provided on the spray branches, so that while the nozzle rotates, its spray range and spray ability are enhanced, solving the problems that the nozzle in the prior art cannot rotate, has a narrow spray range, and weak spray ability.

[0048] Considering the spray effect, in order to improve the uniformity of spraying, as Figure 2-5 shown, further preferably, the M spray branches 4 are distributed at equal angles relative to the water inlet center. Preferably, the inlet diameter of each spray branch 4 gradually decreases along the direction away from the water inlet, improving the uniformity of spraying. Without being limited to the above solutions, preferably, the M spray branches 4 are symmetrically distributed relative to the water inlet center.

[0049] In order to improve the spray effect, the present invention not only designs the spray branches, but also designs the spray holes on the spray branches, as Figure 4-5As shown, preferably, the direct injection spray holes 7 on the M spray branches 4 form a plurality of first spray rings 10 distributed circumferentially; and the average distance from the direct injection spray holes 7 of each first spray ring 10 to the water inlet is equal; the inclined injection spray holes 6 on the M spray branches 4 form a plurality of second spray rings 9 distributed circumferentially, and the average distance from the inclined injection spray holes 6 of each second spray ring 9 to the water inlet is equal; the swirl injection spray holes 5 on the M spray branches 4 form a plurality of third spray rings 8 distributed circumferentially, and the average distance from the swirl injection spray holes 5 of each third spray ring 8 to the water inlet is equal. Further preferably, the sum of the number of the first spray rings 10, the number of the second spray rings 9 and the number of the third spray rings 8 is MP + 1, where P is an integer and P ≥ 1, and the number of the third spray rings 8 is less than the number of the first spray rings 10 and the number of the second spray rings 9. Adjust the number P of the spray rings according to the area to be sprayed. Theoretically, the larger the area to be sprayed, the larger P is, and the better the spraying effect is.

[0050] To increase the spraying intensity and improve the spraying effect, preferably, each first spray ring 10 is provided with M - 1 direct injection spray holes 7, each second spray ring 9 is provided with M - 1 inclined injection spray holes 6, and each third spray ring 8 is provided with M swirl injection spray holes 5; the inclined injection spray holes 6 and the direct injection spray holes 7 on every adjacent M first spray rings 10 and second spray rings 9 are arranged staggeredly, and the total number of the swirl injection spray holes 5, the inclined injection spray holes 6 and the direct injection spray holes 7 on each of the M spray branches 4 is the same. Ensure the dynamic pressure inside the nozzle by adjusting the number of holes on each spray ring of the nozzle, and enhance the spraying force of the nozzle holes.

[0051] To improve the rotation effect of the nozzle, preferably, the central axis of the swirl injection spray hole 5 forms an angle α with the horizontal plane of the spray branch 4 where it is located, and 15° ≤ α ≤ 60°. Further preferably, there are a plurality of swirl injection spray holes 5, and the central axes of the plurality of swirl injection spray holes 5 form the same angle α with the horizontal plane of the spray branch 4 where they are located. The rotation speed and stability can be improved by increasing the number of the swirl injection spray holes. Specifically, preferably, the third spray ring 8 is provided with one, and the central axes of the swirl injection spray holes 5 on the third spray ring 8 form the same angle α with the horizontal plane of the spray branch 4 where they are located. Without being limited to the above scheme, it can also be preferably that there are a plurality of swirl injection spray holes 5 on each spray branch 4, and the central axes of the plurality of swirl injection spray holes 5 form the same angle α with the horizontal plane of the spray branch 4 where they are located.

[0052] To increase the spraying range of the nozzle, such as Figure 6As shown, preferably, the central axis of the inclined spray nozzle hole 6 forms an angle β with the horizontal plane of the spray branch 4 where it is located, and 60° < β < 90°. To further increase the spray range and meet the requirement of a large spray area, the number of inclined spray holes can be increased. In this embodiment, preferably, when the number of the second spray rings 9 is not less than two, the central axes of the inclined spray nozzle holes 6 on the same second spray ring 9 form equal angles β with the horizontal plane of the spray branch 4 where they are located; in the direction away from the water inlet, the difference 0° ≤ △β ≤ 10° between the central axes of the inclined spray nozzle holes 6 on adjacent second spray rings 9 and the horizontal plane of the spray branch 4 where they are located. This design makes the spray atmosphere gradually increase, the spray is uniform, and the spray effect is better.

[0053] Considering from the product structure, preferably, there are three spray branches 4, and each spray branch 4 is distributed at an equal angle relative to the water inlet center in a Y shape, and the lengths of each spray branch 4 are equal; among them, there are four first spray rings 10 formed, two second spray rings 9 formed, and one third spray ring 8 formed; and there are two direct spray nozzle holes 7 provided on each first spray ring 10, two inclined spray nozzle holes 6 provided on each second spray ring, and three rotary spray nozzle holes 5 provided on the third spray ring 8; the inclined spray nozzle holes 6 and the direct spray nozzle holes 7 on every three adjacent spray rings are arranged staggeredly, and the total number of spray holes on each branch of the three spray branches 4 is the same. Specifically, as Figure 4 shown, on the first spray ring closest to the water inlet, there is one hole arranged in the X direction and the Y direction, and no hole is arranged in the Z direction; on the second first spray ring next to the first spray ring, there is one hole arranged in the Y direction and the Z direction, and no hole is arranged in the X direction; on the third first spray ring adjacent to it, there is one hole arranged in the X direction and the Z direction, and no hole is arranged in the Y direction. Staggering like this can, on the one hand, reduce the number of spray holes, increase the dynamic pressure of the nozzle, and enhance the spray intensity; on the other hand, it can also prevent the reduction of the washing uniformity due to the reduction of the number of holes resulting in some places not being sprayed.

[0054] The water inlet is at the central position of the Y shape, delivering water to the three branches to provide uniform water pressure; preferably, a direct spray nozzle hole is provided at the corresponding position of the water inlet. Further preferably, the upper cover of the nozzle is in a circular sheet shape, and the place other than the Y-shaped spray cavity is an appearance part, making the nozzle look beautiful and neat when installed on the washing machine. Preferably, the spray holes are arranged on the bottom cover 2 of the nozzle, and the structure on the bottom cover 2 of the nozzle is the same as the structure of the upper cover 1 of the nozzle, and the two covers can be integrally covered to form the spray cavity 4. Spray holes are opened on the spray branch 4 of the spray cavity 3 on the bottom cover 2.

[0055] In order to further improve the spraying effect of the nozzle, preferably, in the direction away from the water inlet, the angles β between the central axes of the inclined spraying holes 6 on the adjacent second spraying rings 9 and the horizontal plane of the spraying branch 4 where they are located are 85° and 80° respectively, and the angle α between the central axis of the swirling spraying hole 5 and the horizontal plane of the spraying branch 4 where it is located is α = 30°. As Figure 5 shown, along the A-A direction, the axis of the rotating hole is not in the same vertical plane as the direction where it is located, but is perpendicular to this direction.

[0056] The nozzle provided in this embodiment can rotate while spraying and maintain a certain spraying range and spraying intensity, improving the washing rate while evenly spraying the clothes.

[0057] Embodiment 2

[0058] As Figure 1 and Figure 7 shown, this embodiment provides a nozzle assembly, which has the nozzle in Embodiment 1, and further includes a fastening seat and a water inlet adapter. For the fastening seat 11, after the nozzle bottom cover 2 and the nozzle upper cover 1 of the nozzle are sealed and assembled, the nozzle upper cover 1 is rotatably arranged on the fastening seat 11. For the water inlet adapter 14, it includes an adapter inlet and an adapter outlet, and the adapter outlet is sealingly connected to the water inlet of the nozzle upper cover 1. As Figure 1 shown, the nozzle bottom cover 2 and the nozzle upper cover 1 are fastened together to form a rotating part, which is sealed and does not leak water. In order to improve its sealing performance, after the rotating part is inserted into the fastening seat 11, a gasket 3 is sleeved, and then the sleeve 2 and the nozzle upper cover 1 are fastened to prevent the rotating part of the nozzle from coming out of the fastening seat and being able to rotate freely in the fastening seat. The sealing ring 16 is sleeved on the fastening seat 11 to prevent water from flowing out through the gap between the adapter 1 and the fastening seat 11.

[0059] The nozzle assembly provided in this embodiment rotatably and sealingly connects the nozzle to the fastening seat, improving the convenience of using the nozzle and the installation efficiency.

[0060] Embodiment 3

[0061] As Figure 8 shown, this embodiment provides a washing machine, which is provided with the nozzle in Embodiment 1 or the nozzle assembly in Embodiment 2. Further preferably, a plurality of such nozzles or nozzle assemblies are provided. Regarding its installation, preferably in this embodiment, the washing machine includes a washing machine top cover 15, and there are an installation groove 151 and a liquid inlet 152 on the side of the washing machine top cover 15 facing the inside of the washing machine; the nozzle is rotatably embedded in the installation groove 151, and the water inlet of the nozzle upper cover 1 passes through the liquid inlet 152 to be connected to an external water source. Further preferably, the nozzle bottom cover 2 of the nozzle is flush with the end face of the washing machine top cover 15 facing the inside of the washing machine, making the whole structure look flat and beautiful.

[0062] The washing machine provided in this embodiment has a better spraying effect, with a wide spraying range and strong spraying force, improving the user experience.

[0063] In summary, the present invention provides a nozzle, which includes: an upper nozzle cover provided with a water inlet; a bottom nozzle cover that is snap-fitted with the upper nozzle cover to form a sealed cavity; wherein, M spraying branches are formed in the sealed cavity, where M is an integer and M≥2; the M spraying branches are radially distributed outward with the water inlet as the water inlet center, and the inlet end of each spraying branch is communicated with the water inlet; N spraying holes with unequal spraying diameters are formed at the position of the corresponding bottom nozzle cover 2 of each spraying branch. The N spraying holes include a first group of spraying holes, a second group of spraying holes, and a third group of spraying holes. The first group of spraying holes are straight spraying holes, the second group of spraying holes are inclined spraying holes, and the third group of spraying holes are rotary spraying holes. The rotary spraying holes are formed on the spraying branch in a way that causes the nozzle to rotate. The distance of the third group of spraying holes from the center position of the water inlet is greater than the distance of the second group of spraying holes from the center position of the water inlet, and the distance of the second group of spraying holes from the center position of the water inlet is greater than the distance of the first group of spraying holes from the center position of the water inlet, solving the problems of the nozzle not being able to rotate, narrow spraying range, and weak spraying ability.

[0064] The above has specifically shown and described the exemplary embodiments of the present disclosure. It should be understood that the present disclosure is not limited to the detailed structures, settings, or implementation methods described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent settings included within the spirit and scope of the appended claims.

Claims

1. A spray head, characterized in that: Comprising: An upper nozzle cover (1) provided with a water inlet. A lower nozzle cover (2) which is snap-fitted with the upper nozzle cover (1) to form a sealed cavity. M spray branches (4) are formed in the sealed cavity, where M is an integer and M ≥ 2; the M spray branches (4) are radially distributed outward with the water inlet as the water inlet center, and the inlet end of each spray branch (4) is communicated with the water inlet. Each of the spray branches (4) forms N spray holes with unequal spray diameters at the position of the corresponding lower nozzle cover (2). The N spray holes include a first group of spray holes, a second group of spray holes, and a third group of spray holes. The first group of spray holes are direct spray holes (7), the second group of spray holes are inclined spray holes (6), and the third group of spray holes are rotary spray holes (5). The rotary spray holes (5) are formed on the spray branch (4) in a manner that causes the nozzle to rotate. The distance of the third group of spray holes from the center position of the water inlet is greater than the distance of the second group of spray holes from the center position of the water inlet, and the distance of the second group of spray holes from the center position of the water inlet is greater than the distance of the first group of spray holes from the center position of the water inlet. The direct spray holes (7) on the M spray branches (4) form a plurality of first spray rings (10) distributed in a circumferential direction; and the average distance from the direct spray holes (7) of each first spray ring (10) to the water inlet is equal. The inclined spray holes (6) on the M spray branches (4) form a plurality of second spray rings (9) distributed in a circumferential direction, and the average distance from the inclined spray holes (6) of each second spray ring (9) to the water inlet is equal. The rotary spray holes (5) on the M spray branches (4) form a plurality of third spray rings (8) distributed in a circumferential direction, and the average distance from the rotary spray holes (5) of each third spray ring (8) to the water inlet is equal. The sum of the number of the first spray rings (10), the number of the second spray rings (9), and the number of the third spray rings (8) is MP + 1, where P is an integer and P ≥ 1, and the number of the third spray rings (8) is less than the number of the first spray rings (10) and the number of the second spray rings (9).

2. The nozzle according to claim 1, characterized in that: The M spray branches (4) are distributed at equal angles relative to the center position of the water inlet.

3. The spray head according to claim 1, characterized in that: Each of the first spray rings (10) is provided with M - 1 direct spray holes (7), each of the second spray rings (9) is provided with M - 1 inclined spray holes (6), and each of the third spray rings (8) is provided with M rotary spray holes (5); the inclined spray holes (6) and the direct spray holes (7) on every adjacent M first spray rings (10) and second spray rings (9) are arranged in a staggered manner, and the total number of the rotary spray holes (5), inclined spray holes (6), and direct spray holes (7) on each of the M spray branches (4) is equal.

4. The nozzle according to claim 1, characterized in that: The included angle between the central axis of the rotary spray hole (5) and the horizontal plane of the spray branch (4) where it is located is α, and 15° ≤ α ≤ 60°.

5. The spray head according to claim 4, wherein, The jet - spray nozzles (5) are provided with a plurality of them, and the central axes of the plurality of jet - spray nozzles (5) have the same angle α with the horizontal plane of the spray branch (4) where they are located.

6. The nozzle according to claim 5, characterized in that: The third spray ring (8) is provided with one, and the central axes of the jet - spray nozzles (5) on the third spray ring (8) have the same angle α with the horizontal plane of the spray branch (4) where they are located.

7. The nozzle according to claim 6, characterized in that: Each spray branch (4) is provided with a plurality of jet - spray nozzles (5), and the central axes of the plurality of jet - spray nozzles (5) have the same angle α with the horizontal plane of the spray branch (4) where they are located.

8. The spray head according to claim 1, characterized in that: The central axis of the inclined - spray nozzle (6) has an angle β with the horizontal plane of the spray branch (4) where it is located, and 60° < β < 90°.

9. The nozzle according to claim 8, characterized in that: When the number of the second spray rings (9) is not less than two, the central axes of the inclined - spray nozzles (6) on the same second spray ring (9) have the same angle β with the horizontal plane of the spray branch (4) where they are located; in the direction away from the water inlet, the difference △β between the angles β of the central axes of the inclined - spray nozzles (6) on adjacent second spray rings (9) with the horizontal plane of the spray branch (4) where they are located satisfies 0° ≤ △β ≤ 10°.

10. A nozzle according to claim 1, characterized in that: There are three spray branches (4), and each spray branch (4) is distributed at equal angles relative to the water inlet center in a Y - shape, and the lengths of each spray branch (4) are equal; among them, there are four first spray rings (10), two second spray rings (9), and one third spray ring (8); and each first spray ring (10) is provided with two direct - spray nozzles (7), each second spray ring (9) is provided with two inclined - spray nozzles (6), and the third spray ring (8) is provided with three jet - spray nozzles (5); the inclined - spray nozzles (6) and direct - spray nozzles (7) on every three adjacent spray rings are staggered, and the total number of spray nozzles on each of the three spray branches (4) is equal.

11. A nozzle according to claim 10, characterized in that: In the direction away from the water inlet, the angles β of the central axes of the inclined - spray nozzles (6) on adjacent second spray rings (9) with the horizontal plane of the spray branch (4) where they are located are 85° and 80° respectively, and the central axis of the jet - spray nozzle (5) has an angle α with the horizontal plane of the spray branch (4) where it is located, and α = 30°.

12. A nozzle according to any one of claims 1-11, characterized in that: The inlet diameter of each spray branch (4) gradually decreases along the direction away from the water inlet.

13. A nozzle assembly, characterized in that: The nozzle having any one of claims 1 - 12 further includes: A fastening seat (11). After the nozzle bottom cover (2) and the nozzle top cover (1) of the nozzle are hermetically assembled, the nozzle top cover (1) is rotatably arranged on the fastening seat (11). An inlet adapter (14), which includes an adapter inlet and an adapter outlet, and the adapter outlet is hermetically connected to the water inlet of the nozzle top cover (1).

14. A washing machine, characterized in that: There is provided a nozzle according to any one of claims 1 - 12 or a nozzle assembly according to claim 13.

15. The washing machine according to claim 14, characterized in that: The washing machine includes a washing machine top cover (15), and an installation groove (151) and a liquid inlet (152) are provided on one side of the washing machine top cover (15) facing the interior of the washing machine; the spray head is rotatably embedded in the installation groove (151), so that the water inlet of the spray head upper cover (1) passes through the liquid inlet (152) and is connected to an external water source.

16. The washing machine according to claim 15, characterized in that: The bottom cover (2) of the spray head of the spray head is flush with the end face of the washing machine top cover (15) facing the interior of the washing machine.

Images