Nozzle assembly and extractor hood

Abstract

The utility model provides a kind of nozzle assembly and range hood.The nozzle assembly includes seat body and cover body.Formed with medium inlet on seat body.Cover body is rotationally connected on seat body, cover body and seat body cooperate and form with containing cavity, medium inlet is communicated with containing cavity, multiple spouts are formed on the side wall of cover body, multiple spouts are communicated with containing cavity respectively, cover body is structured as: under the reaction force of the cleaning medium that spouts out of spout, relative seat body rotates.Cover body is rotationally connected on seat body, cover body and seat body cooperate and form with containing cavity, medium inlet is communicated with containing cavity, multiple spouts are formed on the side wall of cover body, multiple spouts are communicated with containing cavity respectively, cover body is structured as: under the reaction force of the cleaning medium that spouts out of spout, relative seat body rotates.The spout has first jet angle on horizontal plane and second jet angle on vertical plane, and the parameters of at least two spouts in the multiple spouts are different, and the parameters at least include at least one of the following: spout height, first jet angle, second jet angle.The spout of nozzle assembly can simultaneously have the functions of driving cover body to rotate and cleaning nearby area, and different areas can also be cleaned simultaneously, avoiding the omission of the area to be cleaned.

Description

Technical Field

[0001] This utility model relates to the technical field of range hood cleaning, specifically to a nozzle assembly and a range hood. Background Technology

[0002] Range hoods have become an indispensable household appliance in people's daily lives.

[0003] During use, the impeller and smoke collection hood of a range hood will accumulate grease. This grease not only increases the noise generated during operation but also easily produces odors, thus affecting the user experience.

[0004] Cleaning fluid can be sprayed onto the impeller and smoke hood of a range hood using spray nozzles. The reaction force from the spray nozzles as they spray the fluid drives the spraying device to rotate, thus cleaning the range hood. However, current spraying devices require a large number of spray nozzles to ensure cleaning coverage and effectiveness. Specifically, they need drive spray nozzles to rotate the spraying device and cleaning spray nozzles to clean the range hood. This results in a complex structure, high manufacturing difficulty, and high cost for the spraying device. Utility Model Content

[0005] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, a nozzle assembly is provided, the technical solution of which is as follows.

[0006] The nozzle assembly includes a base and a cover. A media inlet is formed on the base. The cover is rotatably connected to the base, and the cover and base cooperate to form a receiving cavity. The media inlet communicates with the receiving cavity. Multiple nozzles are formed on the sidewall of the cover, and each nozzle communicates with the receiving cavity. The cover is constructed to rotate relative to the base under the reaction force of the cleaning media ejected from the nozzles. Each nozzle has a first spray angle in a horizontal plane and a second spray angle in a vertical plane. At least two of the multiple nozzles have different parameters, including at least one of the following: nozzle height, first spray angle, and second spray angle.

[0007] The nozzle assembly of this invention, when spraying media outward through multiple nozzles, not only cleans the area near the base, but also, the reaction force generated during media spraying drives the cover to rotate relative to the base. This allows the cover to drive the nozzles to rotate circumferentially. Thus, the nozzles of the nozzle assembly simultaneously function to drive the cover to rotate and clean the surrounding area, effectively simplifying the structure of the nozzle assembly. Furthermore, at least two nozzles have at least one of the following different parameters: nozzle height, first spray angle, and second spray angle. This allows the nozzle assembly to rotate circumferentially and simultaneously clean different areas, avoiding omissions and effectively improving the cleaning range and cleaning effect of the nozzle assembly.

[0008] For example, the cover includes a cover body and multiple spray arms. The spray arms protrude from the outer surface of the cover body and extend along the spray line. The nozzles are located at the free ends of the spray arms and communicate with the receiving cavity. The multiple spray arms are spaced apart circumferentially along the cover. In this way, the multiple spray arms can protrude from the outer surface of the cover body circumferentially, and the nozzles can be located at the ends of the spray arms away from the cover body. This ensures that the nozzles can spray the cleaning medium outwards while effectively simplifying the structure of the cover and reducing the manufacturing difficulty and cost of the cover.

[0009] For example, multiple spray arms are evenly distributed along the circumference of the cover. This even distribution ensures that the forces exerted on the cover by each nozzle when spraying the cleaning medium can cancel each other out, thus ensuring the cover remains balanced during rotation. This effectively prevents vibration or displacement of the cover during rotation, which could affect the uniformity of spraying and the service life of the nozzle assembly.

[0010] For example, the nozzle assembly also includes a rotating member, which is sleeved on the base, and the cover is rotatably connected to the base via the rotating member. In this way, the cover can be rotatably connected to the base via the rotating member, which can significantly reduce the friction between the cover and the base, effectively improving the rotational efficiency of the nozzle assembly.

[0011] For example, at least two of the multiple nozzles have different parameters, including one of the following: nozzle height, first spray angle, and second spray angle. Thus, by ensuring that at least two nozzles have different spray ranges (i.e., cleaning ranges), the areas to be cleaned are not missed, effectively improving the cleaning range and cleaning effect of the nozzle assembly.

[0012] For example, at least two of the multiple nozzles have different parameters, including at least two of the following: nozzle height, first spray angle, and second spray angle, such that the nozzles with different parameters have different radii of rotation on the same horizontal plane. Thus, the at least two nozzles having different nozzle heights, first spray angles, and second spray angles ensures that the cleaning area formed by the multiple nozzles of the nozzle assembly can cover the vicinity of the nozzle assembly, thereby further improving the cleaning range and cleaning effect of the nozzle assembly 1.

[0013] According to another aspect of the present invention, a range hood is also provided, including a housing, a fan assembly and a nozzle assembly as described above, wherein the nozzle assembly is disposed inside the housing.

[0014] The range hood of this utility model includes the nozzle assembly as described above. Since the nozzle assembly has the beneficial effects described above, the range hood including the nozzle assembly as described above will necessarily have the beneficial effects described above.

[0015] For example, the chassis has a rear housing, and the nozzle assembly is mounted on the rear housing. This allows the nozzle assembly to be mounted on the rear housing, which not only facilitates cleaning of the chassis and its rear housing but also avoids interference with the air intake path of the chassis, thus preventing any impact on the smoke extraction efficiency of the range hood.

[0016] For example, the nozzle assembly is positioned close to the center of the rear housing. This allows the nozzle assembly to be positioned close to the center of the rear housing, enabling the rear housing to be cleaned with a single nozzle assembly. This ensures effective cleaning of the range hood while also simplifying its structure.

[0017] For example, there are at least two nozzle assemblies, which are spaced apart along the length of the rear housing. Thus, since the range hood housing is relatively long, the at least two nozzle assemblies can be spaced apart along the length of the rear housing, thereby avoiding residue in hard-to-reach areas and significantly improving the cleaning effect on the range hood.

[0018] The advantages and features of this utility model will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention. In the drawings,

[0020] Figure 1 A three-dimensional view of a nozzle assembly according to an exemplary embodiment of the present invention is shown. Figure 1 ;

[0021] Figure 2 A three-dimensional view of a nozzle assembly according to an exemplary embodiment of the present invention is shown. Figure 2 ;

[0022] Figure 3 A cross-sectional view of a nozzle assembly according to an exemplary embodiment of the present invention is shown;

[0023] Figure 4 A top view of a nozzle assembly according to an exemplary embodiment of the present invention is shown;

[0024] Figure 5 A front view of a nozzle assembly according to an exemplary embodiment of the present invention is shown;

[0025] Figure 6 A top view of a nozzle assembly spraying a medium according to an exemplary embodiment of the present invention is shown;

[0026] Figure 7 A three-dimensional view of a range hood according to an exemplary embodiment of the present invention is shown. Figure 1 ;

[0027] Figure 8 A three-dimensional view of a range hood according to an exemplary embodiment of the present invention is shown. Figure 2 ;

[0028] Figure 9 A partial perspective view of a range hood according to an exemplary embodiment of the present invention is shown. Figure 3 ;

[0029] Figure 10 A perspective view of a fan assembly according to an exemplary embodiment of the present invention is shown;

[0030] Figure 11 A perspective view of a first tube or a second tube according to an exemplary embodiment of the present invention is shown.

[0031] The components indicated by the reference numerals in the figures are as follows:

[0032] 1. Nozzle assembly; 11. Base; 111. Media inlet; 112. Foot; 12. Cover; 121. Cover body; 122. Spray arm; 123. Nozzle; 1231. First nozzle; 1232. Second nozzle; 1233. Third nozzle; 1234. Fourth nozzle; 1235. First cleaning zone; 1236. Second cleaning zone; 1237. Third cleaning zone; 1238. Fourth cleaning zone; 13. Receiving cavity; 14. Spraying 15. Rotating component; 2. Range hood; 21. Chassis; 211. Rear housing; 22. Fan assembly; 221. External rotor motor; 2211. Stator shaft; 222. Impeller; 223. Spray arm assembly; 2231. Spray pipe; 2232. First pipe; 2233. Second pipe; 2234. First part; 2235. Second part; 2236. Spray hole; 2237. Liquid supply pipe; 3. First straight line; 4. Second straight line; 5. First intersection point. Detailed Implementation

[0033] In the following description, numerous details are provided to enable a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, which may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well-known in the art have not been described in detail.

[0034] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.

[0035] One embodiment of this utility model provides a nozzle assembly 1, which can simultaneously drive the cover 12 to rotate and clean the surrounding area, effectively simplifying the structure of the nozzle assembly 1. Furthermore, it can clean different areas simultaneously, effectively improving the cleaning effect of the nozzle assembly 1. The following will describe in detail a nozzle assembly 1 according to an embodiment of this utility model with reference to the accompanying drawings.

[0036] like Figures 1 to 3As shown, the nozzle assembly 1 includes a base 11 and a cover 12. A media inlet 111 is formed on the base 11. The cover 12 is rotatably connected to the base 11, and the cover 12 and the base 11 cooperate to form a receiving cavity 13. The media inlet 111 communicates with the receiving cavity 13. Multiple nozzles 123 are formed on the sidewall of the cover 12, and each nozzle 123 communicates with the receiving cavity 13. The cover 12 is configured to rotate relative to the base 11 under the reaction force of the cleaning medium ejected from the nozzles 123. Each nozzle 123 has a first spray angle in a horizontal plane and a second spray angle in a vertical plane. At least two of the multiple nozzles 123 have different parameters, including at least one of the following: nozzle height, first spray angle, and second spray angle.

[0037] The bottom of the base 11 may be provided with a foot 112, and a through hole may be formed on the foot 112 for fasteners such as screws to be inserted. The nozzle assembly 1 can be installed on the surface to be cleaned by screws.

[0038] The base 11 and the foot 112 can be detachably connected or integrally formed. It is preferred to be integrally formed to ensure the structural strength of the base 11. The detachable connection can specifically include plug-in connection or adhesive connection.

[0039] The media inlet 111 can be connected to the receiving cavity 13, and the cleaning medium can be delivered into the receiving cavity 13 through the media inlet 111. The cleaning medium may specifically include cleaning liquid or high-temperature water vapor, etc. After the cleaning medium enters the receiving cavity 13 through the media inlet 111 under pressure, it can be sprayed onto the surface to be cleaned through multiple nozzles 123.

[0040] Specifically, the nozzle 123 can be represented as a through hole formed on the side wall of the cover 12. The cleaning medium can enter the receiving cavity 13 under pressure and then be sprayed onto the surface to be cleaned through multiple through holes. In this way, the structure of the cover 12 is simplified while ensuring the cleaning function of the nozzle assembly 1.

[0041] The above-mentioned nozzle height can be specifically understood as the height of the nozzle 123 on the side wall of the cover 12 in the vertical direction.

[0042] The aforementioned first spray angle can be specifically expressed as the angle of the nozzle 123 on the horizontal plane. The nozzle 123 with the first spray angle allows the cleaning medium 111 to be sprayed outwards through the nozzle 123, which in turn drives the cover 12 to rotate circumferentially. Specifically, as shown... Figure 4As shown, when the nozzle 123 assembly is placed vertically, the spray line 14 (the meaning of the spray line 14 is explained below and will not be repeated here) can form a first intersection point 5 with the side of the cover 12. The projection of the spray line 14 on the horizontal plane has a first spray angle α with the first straight line 3, where α ≤ 90°. The first straight line 3 is constructed as a line connecting the rotation center of the cover 12 and the first intersection point 5. The angle of the first spray angle α can be 30°, 45°, 60°, 90°, etc., and this application does not specifically limit it. It can be understood that the above-mentioned first straight line 3 can be represented as a virtual straight line, which can pass through the rotation center of the cover 12 and the first intersection point 5 in the horizontal direction.

[0043] The aforementioned second spray angle can be specifically expressed as the angle of the nozzle 123 in the vertical plane. The nozzle 123, having the second spray angle, can rotate circumferentially while spraying the cleaning medium 111 towards the surface to be cleaned. Specifically, as... Figure 5 As shown, when the nozzle 123 assembly is placed vertically, the projection of the spray line 14 onto the vertical plane can have a second spray angle β with the second straight line 4, where 0° < β < 90°. The second straight line 4 is constructed as the line connecting the rotation center of the cover 12 and the first intersection point 5. The angle of the second spray angle β can be 30°, 45°, 60°, 80°, etc., and this application does not specifically limit it. It can be understood that the aforementioned second straight line 4 can be represented as a virtual straight line that passes sequentially through the rotation center of the cover 12 and the first intersection point 5 in the horizontal direction. Of course, the first straight line 3 and the second straight line 4 can be the same straight line.

[0044] At least two of the multiple nozzles 123 have at least one of the following different parameters: nozzle height, first spray angle, and second spray angle. This not only allows the multiple nozzles 123 to rotate circumferentially with the cover 12, but also forms annular cleaning areas with different positions around the nozzle assembly 1, thereby improving the cleaning range and cleaning effect of the nozzle assembly 1.

[0045] It is understood that in some embodiments, when the nozzle height and / or second spray angle of the nozzle 123 are different, the first spray angle of each nozzle 123 can be the same, thereby ensuring that the reaction force formed by each nozzle 123 when spraying the cleaning medium is the same, thereby ensuring that the cover 12 can be subjected to uniform force and rotate smoothly and quickly, effectively improving the rotation speed of the cover 12, and thus improving the cleaning efficiency of the nozzle assembly 1.

[0046] The nozzle assembly 1 of this invention, when spraying cleaning medium outward through multiple nozzles 123, can not only clean the area near the base 11, but also the reaction force generated when spraying the cleaning medium can push the cover 12 to rotate relative to the base 11. This allows the cover 12 to drive the nozzles 123 to rotate circumferentially. Thus, the nozzles 123 of the nozzle assembly 1 can simultaneously drive the cover 12 to rotate and clean the surrounding area, effectively simplifying the structure of the nozzle assembly 1. Furthermore, at least two nozzles 123 have at least one of the following different parameters: nozzle height, first spray angle, and second spray angle. This not only allows the nozzle assembly 1 to rotate circumferentially, but also allows for simultaneous cleaning of different areas, avoiding omissions and effectively improving the cleaning range and cleaning effect of the nozzle assembly 1.

[0047] In some embodiments, such as Figures 1 to 3 As shown, the cover 12 includes a cover body 121 and a plurality of spray arms 122. The spray arms 122 protrude from the outer surface of the cover body 121 and are connected along the spray line 14. The nozzle 123 is located at the free end of the spray arms 122 and is connected to the receiving cavity 13. The plurality of spray arms 122 are arranged at intervals along the circumference of the cover 12.

[0048] The spray arm 122 can be integrally formed with the cover body 121. The shape of the spray arm 122 can be rod-shaped. A through cavity can be formed inside the rod-shaped spray arm 122 along its axial direction. One end of the through cavity can be connected to the receiving cavity 13, and the nozzle 123 is formed at the other end of the through cavity. The above-mentioned spray line 14 can be specifically represented as a straight line that overlaps with or is parallel to the axial direction of the spray arm 122.

[0049] In the above embodiment, multiple spray arms 122 can protrude circumferentially on the outer surface of the cover body 121, and the nozzle 123 can be located at the end of the spray arm 122 away from the cover body 121. In this way, while ensuring that the nozzle 123 can spray the cleaning medium outward, the structure of the cover body 12 is also effectively simplified, and the manufacturing difficulty and manufacturing cost of the cover body 12 are reduced.

[0050] In some embodiments, such as Figures 1 to 5 As shown, multiple spray arms 122 are evenly distributed along the circumference of the cover 12.

[0051] In the above embodiment, multiple spray arms 122 are evenly distributed along the circumference of the cover 12. In this way, when each nozzle 123 sprays the cleaning medium outward, the force applied to the cover 12 can cancel each other out, thereby ensuring that the cover 12 remains balanced during rotation. This effectively avoids the situation where the cover 12 vibrates or shifts during rotation, which would affect the uniformity of spraying of the nozzle assembly 1 and the service life of the nozzle assembly 1.

[0052] In some embodiments, the spray angle corresponding to each nozzle 123 can be increased sequentially along the circumferential direction of the cover 12.

[0053] Specifically, along the circumferential direction of the cover 12, the spray angle between adjacent nozzles 123 can increase sequentially. Figure 6 For example, the four nozzles 123 in the figure can be defined as the first nozzle 1231, the second nozzle 1232, the third nozzle 1233, and the fourth nozzle 1234. The spray angles of the first nozzle 1231, the second nozzle 1232, the third nozzle 1233, and the fourth nozzle 1234 can increase sequentially, so that during the rotation, the first cleaning area 1235, the second cleaning area 1236, the third cleaning area 1237, and the fourth cleaning area 1238 can be formed sequentially, and the above four cleaning areas are nested in sequence, thereby fully covering the area near the nozzle assembly 1.

[0054] In the above embodiments, the spray angle of each nozzle 123 can be increased sequentially along the circumferential direction of the cover 12, so that each nozzle 123 has a corresponding cleaning area, avoiding omission of the area to be cleaned, and further improving the cleaning range and cleaning effect of the nozzle assembly 1.

[0055] In some embodiments, such as Figure 3 As shown, the nozzle assembly 1 also includes a rotating member 15, which is sleeved on the base 11, and the cover 12 is rotatably connected to the base 11 through the rotating member 15.

[0056] The aforementioned rotating component 15 can specifically be a bearing, which can be used to support the cover 12 and reduce the coefficient of friction between the cover 12 and the seat 11 during rotation.

[0057] In the above embodiment, the cover 12 can be rotatably connected to the base 11 via the rotating member 15. The rotating member 15 can significantly reduce the friction between the cover 12 and the base 11, effectively improving the rotation efficiency of the nozzle assembly 1.

[0058] In some embodiments, at least two of the plurality of nozzles 123 have different parameters, including one of the following: nozzle height, first injection angle, and second injection angle.

[0059] It is understandable that when at least two nozzles 123 have different first spray angles, the cleaning medium 111 will have different spray speeds as it passes through the nozzles 123, resulting in different cleaning ranges for the nozzles 123. Furthermore, when the nozzle heights or second spray angles of at least two nozzles 123 are different, different cleaning ranges can also be formed around the nozzle assembly 1.

[0060] In the above embodiments, at least two nozzles 123 have different nozzle heights, first spray angles, and second spray angles, thereby ensuring that at least two nozzles 123 can have different spray ranges (i.e. cleaning ranges), avoiding omissions of the areas to be cleaned, and effectively improving the cleaning range and cleaning effect of the nozzle assembly 1.

[0061] In some embodiments, at least two of the plurality of nozzles 123 have different parameters, including at least two of the following: nozzle height, first injection angle, and second injection angle, so that the nozzles 123 with different parameters have different radii of rotation on the same horizontal plane.

[0062] In the above embodiments, at least two of the nozzle height, first spray angle and second spray angle of at least two nozzles 123 are different, thereby ensuring that the cleaning area formed by the plurality of nozzles 123 of the nozzle assembly 1 can cover the vicinity of the nozzle assembly 1, thereby further improving the cleaning range and cleaning effect of the nozzle assembly 1.

[0063] According to another aspect of this utility model, such as Figure 7 As shown, a range hood 2 is also provided, including a housing 21, a fan assembly 22 and a nozzle assembly 1 as described above, the nozzle assembly 1 being disposed inside the housing 21.

[0064] When the fan assembly 22 rotates, it can create negative pressure inside the casing 21 to draw oil fumes from the external environment into the casing 21. Oil fumes often accumulate at the air inlet of the fan assembly 22 when they flow into the casing. The nozzle assembly 1 can be placed inside the casing 21 to ensure the cleaning effect of the nozzle assembly 1 on the casing 21 of the range hood 2.

[0065] The range hood 2 of this utility model includes the nozzle assembly 1 as described above. Since the nozzle assembly 1 has the beneficial effects described above, the range hood 2 including the nozzle assembly 1 as described above must also have the beneficial effects described above.

[0066] In some embodiments, such as Figure 7 As shown, the housing 21 has a rear housing 211, and the nozzle assembly 1 is mounted on the rear housing 211.

[0067] After using the range hood 2 for a certain period of time, grease tends to condense on the rear housing 211 of the casing 21, resulting in odors and increased noise from the range hood 2. Therefore, the nozzle assembly 1 can be installed on the rear housing 211 of the casing 21 to clean the casing 21 and its rear housing 211.

[0068] The connection between the nozzle assembly 1 and the rear housing 211 can be achieved by adhesive bonding or by using fasteners such as screws; this application does not specify the connection method.

[0069] In the above embodiment, the nozzle assembly 1 can be installed on the rear housing 211. This not only allows for the cleaning of the housing 21 and its rear housing 211, but also avoids interference with the air intake path of the housing 21, thus preventing any impact on the smoke extraction efficiency of the range hood 2.

[0070] In some embodiments, such as Figure 7 As shown, the nozzle assembly 1 is positioned near the center of the rear housing 211.

[0071] In the above embodiment, the nozzle assembly 1 can be set close to the center of the rear housing 211, so that the rear housing 211 can be cleaned by using one nozzle assembly 1. While ensuring the cleaning effect of the range hood 2, it also effectively simplifies the structure of the range hood 2.

[0072] In some embodiments, such as Figure 8 As shown, there are at least two nozzle assemblies 1, and the at least two nozzle assemblies 1 are spaced apart along the length of the rear housing 211.

[0073] In the above embodiment, since the range hood 2 has a long body, at least two nozzle assemblies 1 can be spaced apart along the length of the rear body 211, thereby avoiding the residue in the dead corners of hygiene and significantly improving the cleaning effect of the range hood 2.

[0074] In some embodiments, such as Figure 9 and Figure 10 As shown, the fan assembly 22 includes an external rotor motor 221, an impeller 222, and a spray arm assembly 223. The external rotor motor 221 has a hollow stator shaft 2211. The impeller 222 is connected to the rotor of the external rotor motor 221. The spray arm assembly 223 has a nozzle 2231 rotatably disposed relative to the stator shaft 2211, and the nozzle 2231 has spray holes 2236 formed on it facing the impeller 222.

[0075] The impeller 222 can be fitted around the stator shaft 2211 of the external rotor motor 221 and rotate around the stator shaft 2211 to drive the flow of nearby gas.

[0076] When water is used as the cleaning medium, the above-mentioned spray arm assembly 223 can be connected to a pump body and an evaporator. The pump body can supply water to the evaporator, the evaporator can vaporize the water to form water vapor, and deliver the water vapor to the spray pipe 2231. Then, the water vapor is sprayed onto the impeller 222 through the spray holes 2236 on the spray pipe 2231.

[0077] In the above embodiments, the spray arm assembly 223 can effectively clean the oil stains on the impeller 222, avoiding the oil stains from condensing on the impeller 222, which would affect the rotation efficiency of the impeller 222 and cause bacteria growth and odors. This significantly improves the cleaning effect of the range hood 2 and the user experience.

[0078] In some embodiments, such as Figure 10 As shown, the nozzle 2231 is connected to a liquid supply pipe 2237, which passes through the stator shaft 2211.

[0079] The stator shaft 2211 may have a through cavity formed in its axial direction. The liquid supply pipe 2237 may be inserted into the through cavity and may be connected to the nozzle 2231 to deliver cleaning medium to the nozzle 2231.

[0080] In the above embodiments, when cleaning the impeller 222 using the spray arm assembly 223, the liquid supply pipe 2237 can be inserted into the stator shaft 2211, thereby reducing the volume of the range hood 2 occupied by the spray arm assembly 223 and effectively improving the compactness and practicality of the range hood 2.

[0081] In some embodiments, such as Figure 10 As shown, the nozzle 2231 includes a first tube 2232 and a second tube 2233, which are symmetrically arranged relative to the stator shaft 2211.

[0082] In the above embodiment, the first pipe 2232 and the second pipe 2233 can simultaneously and thoroughly clean the surface of the impeller 222, thus avoiding the situation where oil stains are missed and are not cleaned, effectively improving the cleaning effect and cleaning efficiency of the range hood 2.

[0083] In some embodiments, such as Figure 11 As shown, the first tube 2232 and / or the second tube 2233 include a first part 2234 and a second part 2235 connected to each other. A spray hole 2236 is formed on the first part 2234, and the center line of the spray hole 2236 forms a preset angle with the plane containing the length of the first part 2234.

[0084] The number of the above-mentioned spray holes 2236 can be multiple, and the multiple spray holes 2236 can be spaced apart along the length direction of the first part 2234 to increase the amount of cleaning medium sprayed per unit time.

[0085] The second part 2235 can be perpendicular to the stator shaft 2211 so that the spray holes 2236 on the first part 2234 are as close as possible to the impeller 222. The first part 2234 can be parallel to the stator shaft 2211 so that the spray holes 2236 on the first part 2234 are oriented toward the impeller 222.

[0086] The centerline of the aforementioned spray hole 2236 can form a preset angle with the plane containing the length of the first portion 2234. The preset angle can be less than 90°, specifically 30°, 45°, 60°, 80°, etc., and this application does not make a specific limitation in this regard.

[0087] In the above embodiment, the centerline of the spray hole 2236 can form a preset angle with the plane containing the length of the first part 2234, so that the reaction force generated when the cleaning medium is sprayed outward using the spray hole 2236 can drive the first tube 2232 and / or the second tube 2233 to rotate around the stator shaft 2211, thereby realizing the self-rotation of the spray arm assembly 223. This not only increases the cleaning range of the spray arm assembly 223 and ensures the cleaning effect of the spray arm assembly 223, but also reduces the energy consumption of driving the rotation of the spray arm assembly 223, significantly improving the practicality of the spray arm assembly 223.

[0088] In the description of this utility model, it should be understood that the directional terms such as "front", "rear", "up", "down", "left", "right", "horizontal", "vertical", "horizontal", "top", and "bottom" indicate the orientation or positional relationship, which are usually based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0089] For ease of description, relative terms such as "above," "over," "on the upper surface of," and "above" are used here to describe the regional positional relationship of one or more components or features shown in the figures to other components or features. It should be understood that relative terms include not only the orientation of the component as depicted in the figure but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0090] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0091] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0092] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A nozzle assembly, characterized in that, include: A base body, on which a medium inlet is formed; as well as A cover body is rotatably connected to a base body. The cover body and the base body cooperate to form a receiving cavity. The medium inlet is connected to the receiving cavity. Multiple nozzles are formed on the side wall of the cover body. The multiple nozzles are respectively connected to the receiving cavity. The cover body is constructed such that it rotates relative to the base body under the reaction force of the cleaning medium sprayed from the nozzles. The nozzle has a first spray angle on a horizontal plane and a second spray angle on a vertical plane. At least two of the multiple nozzles have different parameters, and the parameters include at least one of the following: nozzle height, first spray angle, and second spray angle.

2. The nozzle assembly according to claim 1, characterized in that, The cover includes a cover body and a plurality of spray arms. The spray arms protrude from the outer surface of the cover body and extend along the spray line. The nozzle is located at the free end of the spray arm and communicates with the receiving cavity. The plurality of spray arms are arranged at circumferential intervals along the cover.

3. The nozzle assembly according to claim 2, characterized in that, The multiple spray arms are evenly distributed along the circumference of the cover.

4. The nozzle assembly according to claim 1, characterized in that, The nozzle assembly also includes a rotating component, which is sleeved on the base, and the cover is rotatably connected to the base through the rotating component.

5. The nozzle assembly according to claim 1, characterized in that, At least two of the plurality of nozzles have different parameters, including one of the following: nozzle height, first injection angle, and second injection angle.

6. The nozzle assembly according to claim 1, characterized in that, At least two of the plurality of nozzles have different parameters, including at least two of the following: nozzle height, first injection angle, and second injection angle, such that the nozzles with different parameters have different radii of rotation on the same horizontal plane.

7. A range hood, characterized in that, It includes a chassis, a fan assembly, and a nozzle assembly as described in any one of claims 1 to 6, wherein the nozzle assembly is disposed within the chassis.

8. The range hood according to claim 7, characterized in that, The chassis has a rear housing, and the nozzle assembly is mounted on the rear housing.

9. The range hood according to claim 8, characterized in that, The nozzle assembly is positioned near the center of the rear housing.

10. The range hood according to claim 8, characterized in that, The nozzle assembly comprises at least two nozzle assemblies, which are spaced apart along the length of the rear housing.

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