A nozzle assembly and a range hood thereof

Abstract

The application discloses a nozzle assembly and a range hood thereof. The nozzle assembly comprises a nozzle seat, a water flow channel in the shape of an inverted V, a water inlet at the top of the nozzle seat corresponding to the highest point of the water flow channel, at least two water outlets at the bottom of the nozzle seat, and a nozzle head installed at each water outlet. The nozzle head has a water outlet for water flow. The nozzle assembly has a simple structure and solves the problems of small cleaning range of a single nozzle head and easy blockage of a multi-hole nozzle head.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of range hood technology, and in particular to a nozzle assembly and a range hood thereof. BACKGROUND

[0002] During long-term use, oil accumulates inside the range hood, resulting in reduced performance and poor smoke suction effect, which causes the oil fume in the user's kitchen to become larger and harms the user's physical and mental health.

[0003] The range hood with a water cleaning function has a cleaning nozzle as a core component of the cleaning system. At present, most of the cleaning nozzles on the market have a single nozzle jet structure, which has a limited cleaning range and a low cleaning rate. Alternatively, a plurality of small hole nozzle structures are used, which are prone to blockage, resulting in cleaning failure. SUMMARY

[0004] The present application aims to at least partially solve one of the problems existing in the prior art. To this end, the present application provides a nozzle assembly, which has a simple structure and solves the problems of small cleaning range of a single nozzle and easy blockage of a multi-small-hole nozzle. The present application also provides a range hood.

[0005] According to the above-mentioned nozzle assembly, the following technical solutions are used to achieve the above-mentioned technical effects:

[0006] A nozzle assembly comprises: a nozzle seat having a water flow channel in the shape of an inverted "V", an inlet being provided at the top of the nozzle seat corresponding to the highest point of the water flow channel, at least two water outlets being provided at the bottom of the nozzle seat, and the water flow channel being in communication with the inlet and each of the water outlets; and a nozzle, one nozzle being installed at each of the water outlets, the nozzle having a water outlet for water flow.

[0007] In some embodiments, the number of water outlets is two or four, all of the water outlets being side water outlets and being respectively arranged at opposite ends of the water flow channel; or the number of water outlets is three or five, one of the water outlets being a middle water outlet, the middle water outlet being arranged at the highest point of the water flow channel and being coaxially arranged with the inlet, the remaining water outlets being side water outlets and being respectively arranged at opposite ends of the water flow channel, a flow limiting structure being provided in the middle water outlet, the unit water flow rate of the flow limiting structure being less than the unit water flow rate of the side water outlet.

[0008] In some embodiments, the flow limiting structure is a flow limiting inlet, the middle water outlet comprises a water outlet through hole and the flow limiting inlet, and the water outlet through hole is in communication with the water flow channel through the flow limiting inlet; or the flow limiting structure is a flow stabilizer, and the flow stabilizer is arranged in the middle water outlet.

[0009] In some embodiments, the nozzle seat comprises a base and a support, the support is arranged at the bottom of the base and connected with the base, or a mounting cavity is concavely arranged at the bottom of the base and opens downward, the support is arranged in the mounting cavity and connected with the base; the water flow channel is formed between the support and the base, the water inlet is arranged at the top of the base, and at least two water outlets are arranged at the bottom of the support.

[0010] In some embodiments, the base is provided with a first flow channel opening toward the support, the support covers the opening of the first flow channel and jointly encloses the water flow channel; or the support is provided with a second flow channel opening toward the base, the base covers the opening of the second flow channel and jointly encloses the water flow channel; or the support is provided with a second flow channel opening toward the base, the base is provided with a first flow channel opening toward the support at a position corresponding to the second flow channel, the second flow channel cooperates with the first flow channel to jointly enclose the water flow channel.

[0011] In some embodiments, the base and the support are detachably connected through a first clamping structure or a connecting piece.

[0012] In some embodiments, the first clamping structure comprises a clamping hook, the clamping hook is arranged outside the support, the fixed end of the clamping hook is integrally formed with the base, and the free end of the clamping hook is hooked with the outside of the bottom of the support.

[0013] In some embodiments, the first clamping structure further comprises a convex, the bottom of the support is provided with the convex extending downward at a position corresponding to the clamping hook, and the free end of the clamping hook is hooked with the convex.

[0014] In some embodiments, the spray head comprises a spray head body and at least two diaphragms, the spray head body is sleeved outside the water outlet and connected with each diaphragm, and the water outlet is formed between adjacent diaphragms; or the spray head comprises an impeller, the impeller is rotatably arranged in the water outlet, and the impeller has a plurality of water outlets arranged at intervals in the circumferential direction.

[0015] In some embodiments, a positioning structure is arranged between the spray head body and the water outlet; or the spray head further comprises a support seat, the impeller is rotatably mounted in the water outlet through the support seat, and the support seat has a water passage hole for water flow.

[0016] In some embodiments, a cover plate is further included, which respectively covers the water outlet and the spray head, and limits and fixes the spray head on the water outlet; or a sealing sleeve is further included, which respectively covers the water outlet and the spray head, and limits and fixes the spray head on the water outlet.

[0017] In some embodiments, a cover plate and a sealing sleeve are further included, the cover plate covers the water outlet and the spray head respectively, and limits and fixes the spray head on the water outlet, and the sealing sleeve covers the cover plate and the nozzle seat, and is connected with the cover plate and / or the nozzle seat.

[0018] In some embodiments, the nozzle seat has a mounting cavity facing the cover plate, at least part of the cover plate is embedded in the mounting cavity, the cover plate is detachably connected with the nozzle seat through a second buckle structure and / or a fastener; and / or the cover plate is fixed with a limiting part extending towards the bracket, and the limiting part tightly presses the bracket on the base.

[0019] In some embodiments, the second buckle structure includes a buckle part and a buckle groove, the buckle part is arranged on opposite two side walls of the mounting cavity, and the buckle groove is arranged on the outer side wall of the cover plate at a position corresponding to the buckle part, and the buckle groove is matched with the buckle part.

[0020] In some embodiments, at least two positioning columns extending downwards are fixed on the top surface of the mounting cavity, all the positioning columns are located outside the bracket, the cover plate is provided with connecting holes at positions corresponding to the positioning columns, and the fastener is tightly connected with the positioning columns through the connecting holes.

[0021] In some embodiments, the cover plate is provided with an annular protrusion at a position corresponding to the spray head, the annular protrusion covers the spray head and the water outlet, and limits and fixes the spray head on the water outlet, and a water passage is arranged on the free end of the annular protrusion.

[0022] In some embodiments, the sealing sleeve is in interference fit with the outer side wall of the nozzle seat; and / or the sealing sleeve is provided with a sleeve at a position corresponding to the annular protrusion, the sleeve covers the annular protrusion and is matched with the annular protrusion.

[0023] According to the above-mentioned range hood, the following technical solutions are adopted:

[0024] The oil extractor comprises a wind cabinet assembly and a nozzle assembly as described above, the nozzle assembly is detachably installed outside the baffle of the wind cabinet assembly, the baffle is provided with an opening at a position corresponding to the position of the spray head, and at least part of the spray head penetrates into the wind cabinet assembly through the opening.

[0025] Compared with the prior art, the present application has at least the following advantages:

[0026] 1. The nozzle assembly of the present application has a simple structure, and water flow can be easily distributed to each spray head through the inverted "V"-shaped water flow channel and the at least two water outlets connected thereto, thereby preventing uneven water flow and the phenomenon of no water spraying from the spray head, realizing multi-hole spraying function, increasing the cleaning range, and solving the problem of small cleaning range of the existing single spray head.

[0027] 2. The spray head is provided with a water outlet formed by the gap between adjacent diaphragms or the gap between adjacent blades of the impeller, which can effectively prevent the spray head from being blocked, and solve the problem of easy blocking of the multi-small-hole spray head. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is an exploded view of the nozzle assembly in the embodiment of the present application;

[0029] Figure 2 is a sectional view of the nozzle assembly in the embodiment of the present application;

[0030] Figure 3 is a structural schematic view of the nozzle seat and the spray head in the embodiment of the present application;

[0031] Figure 4 is a sectional view of the nozzle seat in the embodiment of the present application;

[0032] Figure 5 is a structural schematic view of the base in the embodiment of the present application;

[0033] Figure 6 is a structural schematic view of the bracket in the embodiment of the present application Figure 1 ;

[0034] Figure 7 is a structural schematic view of the bracket in the embodiment of the present application Figure 2 ;

[0035] Figure 8 is a structural schematic view of the spray head in the embodiment of the present application;

[0036] Figure 9 is a structural schematic view of the nozzle assembly after removing the sealing sleeve in the embodiment of the present application;

[0037] Figure 10 is a sectional view of the nozzle assembly without the sealing sleeve in an embodiment of the present application;

[0038] Figure 11 is a structural schematic view of the cover plate in an embodiment of the present application;

[0039] Figure 12 is a structural schematic view of the nozzle assembly in an embodiment of the present application;

[0040] Figure 13 is a sectional view of the nozzle assembly in an embodiment of the present application;

[0041] Figure 14 is a sectional view of another nozzle seat in an embodiment of the present application;

[0042] Figure 15 is an exploded view of another nozzle in an embodiment of the present application;

[0043] Figure 16 is a sectional view of another nozzle assembly in an embodiment of the present application;

[0044] Figure 17 is a structural schematic view of the air cabinet assembly and the nozzle assembly in an embodiment of the present application;

[0045] Figure 18 is a sectional view of the air cabinet assembly and the nozzle assembly in an embodiment of the present application.

[0046] In the drawings: 1 - nozzle seat, 101 - water flow channel, 11 - base, 110 - mounting cavity, 111 - water inlet, 112 - first flow channel, 113 - catch, 114 - buckle part, 115 - positioning column, 116 - convex edge, 12 - bracket, 121 - water outlet, 122 - second flow channel, 123 - convex bump, 124 - positioning block, 131 - flow-limiting water inlet hole, 132 - flow stabilizer;

[0047] 2 - nozzle, 201 - water outlet, 21 - nozzle body, 211 - notch, 22 - diaphragm, 23 - impeller, 231 - blade, 2311 - limiting step, 232 - rotating shaft, 24 - support seat, 241 - water passage hole, 242 - center hole;

[0048] 3 - cover plate, 31 - limiting part, 32 - clamping groove, 33 - connecting hole, 34 - annular protrusion, 341 - water passage, 342 - first clamping groove, 343 - second clamping groove;

[0049] 4 - sealing sleeve, 41 - sleeve, 411 - convex rib, 42 - screw hole;

[0050] 5 - fastener; 6 - water inlet pipe;

[0051] 7 - air cabinet assembly, 71 - baffle, 72 - air wheel, 73 - connecting piece. DETAILED DESCRIPTION

[0052] The following examples illustrate the present application but do not limit the present application. Modifications and equivalent replacements to the specific embodiments of the present application or to some technical features without departing from the spirit of the present application should be covered in the technical solution range claimed by the present application.

[0053] Example 1

[0054] Reference Figures 1-4 The present embodiment provides a nozzle assembly applied to an air cabinet assembly of a range hood for cleaning the air cabinet assembly. The nozzle assembly comprises a nozzle seat 1, the nozzle seat 1 has a water flow channel 101 in the shape of an inverted "V" character, an inlet 111 is arranged at the position corresponding to the highest point of the water flow channel 101 at the top of the nozzle seat 1, and the inlet 111 is connected in communication with the water source of the cleaning water through a water inlet pipe 6. At least two water outlets 121 are arranged at the bottom of the nozzle seat 1, and the water flow channel 101 is connected in communication with the inlet 111 and each water outlet 121 respectively. Thus, after the cleaning water passes through the inlet 111, it can be quickly drained to the opposite ends of the water flow channel 101, preventing uneven water flow from causing the water outlet 121 to not spray water.

[0055] The nozzle assembly further comprises a spray head 2, and a spray head 2 is installed at each water outlet 121. The spray head 2 has a water outlet 201 for water flow, and the spray head 2 comprises at least two diaphragms 22 or impellers 23. The water outlet 201 can be formed by the gap between adjacent diaphragms 22, or by the gap between adjacent blades 231 of the impeller 23. Compared with a single-nozzle spray structure, the nozzle assembly can realize multi-hole spray function, increase the cleaning range, and solve the problem of small cleaning range of the existing single spray head. In addition, compared with the existing multi-small-hole nozzle structure, the nozzle assembly can effectively prevent the spray head from being blocked, and solve the problem of easy blockage of the multi-small-hole spray head.

[0056] In the present embodiment, the number of water outlets 121 is three, one of which is a middle water outlet hole arranged at the highest point of the water flow channel 101 and coaxially arranged with the inlet 111; the remaining water outlets 121 are side water outlet holes arranged on the left end or right end of the water flow channel 101. In order to prevent the straight spray of the middle water outlet hole from causing the side water outlet holes on both sides to be unable to spray water, a flow limiting structure is arranged in the middle water outlet hole, and the unit water flow rate of the flow limiting structure is less than that of the side water outlet hole.

[0057] In other embodiments, the number of water outlets 121 can also be two or four, at this time, all water outlets 121 are side water outlets, which are respectively arranged at the left and right ends of the inverted "V"-shaped water flow channel 101 and are mirror image arranged. Of course, the number of water outlets 121 can also be five, one of which is a middle water outlet, and the other four are side water outlets, and the four water outlets 121 are respectively arranged at the left and right ends of the inverted "V"-shaped water flow channel 101.

[0058] Further, the specific structure of the flow limiting structure includes but is not limited to any one of the following:

[0059] The first kind, refer to Figure 5 The flow limiting structure is a flow limiting water inlet hole 131, the middle water outlet hole includes a water outlet through hole and a flow limiting water inlet hole 131, the flow limiting water inlet hole 131 is arranged between the water flow channel 101 and the water outlet through hole, the water outlet through hole is communicated with the water flow channel 101 through the flow limiting water inlet hole 131, and the diameter of the flow limiting water inlet hole 131 is smaller than the diameters of the water outlet through hole and the side water outlet hole.

[0060] The second kind, refer to Figure 14 The flow limiting structure is a flow stabilizer 132, and the flow stabilizer 132 is arranged in the middle water outlet hole, and the flow limiting value of the flow stabilizer 132 is smaller than the unit water flow rate of the side water outlet hole.

[0061] Refer to Figures 1-7 In this embodiment, the nozzle seat 1 includes a base 11 and a bracket 12, and the base 11 and the bracket 12 are both made of plastic, and the plastic is preferably PA material.

[0062] A downwardly open mounting cavity 110 is concavely arranged at the bottom of the base 11, the bracket 12 is arranged in the mounting cavity 110 from bottom to top and is detachably connected with the base 11, the water flow channel 101 is formed between the bracket 12 and the base 11, the water inlet hole 111 extending upward is integrally formed at the position corresponding to the highest point of the water flow channel 101 at the top of the base 11, and at least two water outlets 121 extending downward and arranged in the left-right direction are integrally formed at the bottom of the bracket 12. In other embodiments, the mounting cavity 110 can be omitted, at this time, the bracket 12 is directly detachably connected to the bottom of the base 11. As can be seen, by designing the nozzle seat as a split structure, the processing and manufacturing are more convenient, and the formation of the inverted "V"-shaped water flow channel 101 is facilitated.

[0063] Further, the formation mode of the inverted "V"-shaped water flow channel 101 includes but is not limited to any one of the following:

[0064] The first kind, refer to Figures 4-7The bracket 12 is provided with a second flow channel 122 opening towards the base 11, the base 11 is provided with a first flow channel 112 opening towards the bracket 12 at a position corresponding to the second flow channel 122, the second flow channel 122 is inserted into the first flow channel 112 and cooperatively encloses the water flow channel 101. In the embodiment, the second flow channel 122 is inserted into the second flow channel 122 and abuts against the bracket 12 to form a planar seal, thereby improving the sealing performance and preventing water leakage; the second flow channel 122 and the first flow channel 112 are both in a "V" shape structure with the middle being high and the two ends being low.

[0065] The second kind is different from the first kind in that the second flow channel 122 is omitted, i.e. the base 11 is provided with the first flow channel 112 opening towards the bracket 12, the first flow channel 112 is in a "V" shape structure with the middle being high and the two ends being low, the bracket 12 covers the opening of the first flow channel 112 and cooperatively encloses the water flow channel 101, and the bracket 12 forms a planar seal with the lower end surface of the first flow channel 112.

[0066] The third kind is different from the first kind in that the first flow channel 112 is omitted, i.e. the bracket 12 is provided with the second flow channel 122 opening towards the base 11, the second flow channel 122 is in a "V" shape structure with the middle being high and the two ends being low, the base 11 covers the opening of the second flow channel 122 and cooperatively encloses the water flow channel 101, and the base 11 forms a planar seal with the upper end surface of the second flow channel 122.

[0067] Further, the base 11 and the bracket 12 are detachably connected through the first buckle structure or a connecting member (e.g. a screw). In the embodiment, the base 11 and the bracket 12 are connected through the first buckle structure, the first buckle structure includes a clamping hook 113, at least one clamping hook 113 is arranged on each of the opposite outer sides of the bracket 12 and located in the mounting cavity 110 of the base 11, the fixed end of each clamping hook 113 is integrally formed with the top surface of the mounting cavity 110 of the base 11, and the free end is hooked with the outer side of the bottom of the bracket 12, so as to realize the detachable and stable and reliable fixation of the bracket 12 in the mounting cavity 110 of the base 11 through the plurality of clamping hooks 113.

[0068] Further, the first buckle structure further includes a convex block 123, the bottom of the bracket 12 is provided with a downwardly extending convex block 123 at a position corresponding to the clamping hook 113, the convex block 123 is integrally formed with the bottom surface of the bracket 12, and the free end of the clamping hook 113 is hooked with the convex block 123, so that the convex block 123 is additionally arranged on the bottom of the bracket 12, thereby strengthening the strength of the connection and the whole of the bracket 12 and ensuring the more firm and reliable connection of the bracket 12 and the base 11.

[0069] Further, the nozzle seat 1 is integrally formed with outwardly extending flanges 116 at opposite ends thereof, i.e. flanges 116 are integrally formed at the left and right ends of the bottom of the base 11. The nozzle assembly can be detachably fixedly installed on the surrounding plate 71 of the air cabinet assembly 7 by cooperating the flanges 116 with connecting members 73 (e.g. screws).

[0070] Further, the specific structure of the spray head 2 includes but is not limited to any one of the following:

[0071] The first kind, referring to Figures 1-2 and Figure 8 , the spray head 2 is integrally injection molded with rubber or silicone, which includes a spray head body 21 and at least two diaphragms 22. The outer diameter of the water outlet 121 is large at the upper end and small at the lower end, and a limiting table is formed on the outer side wall of the water outlet 121 below. The spray head body 21 is sleeved on the outer lower end of the water outlet 121 and abuts against the limiting table. The outer edge of each diaphragm 22 is integrally formed with the spray head body 21, and a water spraying port 201 is formed between adjacent diaphragms 22. The water spraying port 201 is strip-shaped, and its width is 0.3-0.5mm. Since the diaphragm 22 has elastic deformation performance, when the cleaning water flows through the diaphragm 22, the diaphragm 22 deforms under the action of the water flow, and the cleaning water is sprayed outward from the water spraying port 201 between adjacent diaphragms 22. Compared with the structure of multiple small hole nozzles, it can effectively prevent the spray head from being blocked, and solve the problem of easy blockage of the multi-small-hole spray head. It is particularly pointed out that the spray head 2 can be integrally formed on the water outlet 121, or can be limited and fixed on the water outlet 121 by the cover plate 3 or the sealing sleeve 4.

[0072] A positioning structure is arranged between the spray head body 21 and the water outlet 121, which includes a positioning block 124 and a notch 211. At least one notch 211 is arranged at the end of the side wall of the spray head body 21 away from the water spraying port 201, and a positioning block 124 is fixedly arranged at the position corresponding to the notch on the lower end of the outer side wall of the water outlet 121. The positioning block 124 is fixedly connected with the limiting table, referring to Figure 6 , the positioning block 124 is inserted into the corresponding notch 211, so as to realize the pre-positioning of the spray head 2 through the positioning structure, and prevent the spray head 2 from rotating circumferentially.

[0073] The second kind, referring to Figure 15The spray head 2 comprises an impeller 23 rotatably arranged in the water outlet 121, the impeller 23 has a plurality of blades 231 arranged in a circumferential direction, and a water spraying opening 201 is formed between adjacent blades 231, so that the impeller 23 has a plurality of water spraying openings 201 arranged in the circumferential direction. It is particularly pointed out that a limiting step 2311 is arranged at the lower end of each blade 231, and the limiting step 2311 can be fixed by a flange arranged at the bottom of the water outlet 121, or the limiting step 2311 can be fixed by the cover plate 3 or the sealing sleeve 4, so as to prevent the impeller 23 from being pulled out downward.

[0074] Further, the spray head 2 further comprises a support seat 24 fixedly installed in the water outlet 121 and located between the water flow channel 101 and the impeller 23, the impeller 23 is rotatably installed in the water outlet 121 through the support seat 24, and the support seat 24 has a water passage hole 241 for water flow. Specifically, a center hole 242 is arranged at the center position of the support seat 24, and the end of the impeller 23 close to the support seat 24 is integrally formed with a rotating shaft 232 extending towards the support seat 24, and the rotating shaft 232 is rotatably inserted into the center hole 242.

[0075] Embodiment 2

[0076] Reference Figures 1-2 and Figures 9-11 The difference between this embodiment and embodiment 1 is that the nozzle assembly further comprises a cover plate 3, at least part of the cover plate 3 is embedded in the installation cavity 110 and sleeved on the support 12 and all the spray heads 2, the cover plate 3 limits and fixes each spray head 2 on the corresponding water outlet 121, and the base 11 of the nozzle seat 1 is detachably connected with the cover plate 3, so as to limit and fix the spray head 2 and the support 12 on the base 11 through the cover plate 3. In addition, the cover plate 3 is integrally formed with two limiting portions 31 extending towards the support 12, the two limiting portions 31 are arranged in a left-right direction, and each limiting portion 31 tightly presses the support 12 on the base 11, so that the support 12 tightly abuts against the base 11 under the action of the cover plate 3, thereby ensuring the sealing performance of the water flow channel 101 formed between the support 12 and the base 11.

[0077] Further, the base 11 of the nozzle seat 1 and the cover plate 3 are detachably connected through a second buckle structure and / or a fastener 5. The second buckle structure comprises a buckle portion 114 and a clamping groove 32, the buckle portion 114 is arranged on the opposite two side walls of the installation cavity 110, the clamping groove 32 is arranged on the outer side wall of the cover plate 3 at the position corresponding to the buckle portion 114, and the clamping groove 32 is matched and clamped with the buckle portion 114, so that the cover plate 3 is detachably installed in the base 11.

[0078] Two positioning posts 115 extending downward are integrally formed on the top surface of the installation cavity 110, and are respectively located on the left and right outer sides of the bracket 12. The cover plate 3 is provided with a connecting hole 33 through which the fastener 5 passes, at a position corresponding to the positioning post 115. The fastener 5 is arranged in the connecting hole 33 from bottom to top and is fastened to the positioning post 115. Thus, through the second buckle structure and the fastener 5, the cover plate 3 is more firmly and reliably installed on the nozzle seat 1.

[0079] Further, the cover plate 3 is integrally formed with a ring-shaped protrusion 34 extending downward at a position corresponding to the nozzle 2. The ring-shaped protrusion 34 is sleeved on the nozzle 2 and the water outlet 121, and limits and fixes the nozzle 2 on the water outlet 121. A water passage 341 through which water flows is formed on the free end of the ring-shaped protrusion 34, and the water passage 341 is in communication with the water outlet 201 of the nozzle 2.

[0080] Reference Figures 1-2 and Figures 10-13 The nozzle assembly further comprises a sealing sleeve 4 made of fire-retardant silicone / rubber material. The sealing sleeve 4 is sleeved on the outer side of the cover plate 3 and the bottom end of the base 11 of the nozzle seat 1, and is connected with the cover plate 3 and / or the nozzle seat 1 to improve the overall appearance and sealing effect of the nozzle assembly. In the present embodiment, the sealing sleeve 4 is connected with the outer side wall of the base 11 of the nozzle seat 1 in an interference fit. The sealing sleeve 4 is provided with a sleeve 41 at a position corresponding to the ring-shaped protrusion 34. The sleeve 41 is sleeved on the outer side of the ring-shaped protrusion 34 and is connected with the ring-shaped protrusion 34 in a clamping manner.

[0081] Further, the outer side wall of the ring-shaped protrusion 34 is provided with a first clamping groove 342 and a second clamping groove 343 arranged in the height direction. The first clamping groove 342 and the second clamping groove 343 are both annular structures. Two annular protrusions 411 are integrally formed on the inner side wall of the sleeve 41 and are arranged in the height direction. The two protrusions 411 are respectively inserted into the first clamping groove 342 and the second clamping groove 343, so as to form multiple connection points between the sleeve 41 and the ring-shaped protrusion 34. Each connection point can be configured as a sealing layer to form multiple sealing layers.

[0082] In addition, the left and right ends of the sealing sleeve 4 are respectively provided with screw holes 42 through which connecting members pass. By arranging the connecting members in the protruding edge 116 of the nozzle seat 1 and the screw holes 42 of the sealing sleeve 4, the nozzle assembly can be detachably installed on the surrounding plate 71 of the air cabinet assembly 7. At this time, the sealing sleeve 4 is clamped between the nozzle seat 1 and the surrounding plate 71, so that the nozzle assembly and the air cabinet assembly are in elastic or flexible contact, preventing abnormal noise from occurring at the joint.

[0083] Embodiment 3

[0084] The difference between the present embodiment and embodiment 2 is that the cover plate 3 or the sealing sleeve 4 is omitted. When the nozzle assembly is omitted from the sealing sleeve 4, the nozzle assembly is as followsFigures 9-10 As shown, at this time, at least part of the cover plate 3 is embedded in the mounting cavity 110 of the nozzle seat 1 and is sleeved on all the water outlets and all the nozzles 2, and the cover plate 3 is detachably connected with the nozzle seat 1 through the second buckle structure and / or the fastener 5.

[0085] When the nozzle assembly is provided without the cover plate 3, the nozzle assembly is as shown in FIG. 4. Figure 16 As shown, at this time, the sealing sleeve 4 is sleeved on the lower end of the water outlet 121, the nozzle 2 and the nozzle seat 1, and is connected with the nozzle seat 1, and the sealing sleeve 4 directly fixes the nozzle 2 on the water outlet 121 without the aid of the cover plate 3. In order to avoid the nozzle 2 from being separated from the water outlet, the nozzle 2 can be designed to be integrally formed with the sleeve 41 of the sealing sleeve 4 or the water outlet 121.

[0086] It can be seen that by omitting the cover plate 3 or the sealing sleeve 4, the overall structure of the nozzle assembly is simpler and the cost is lower, and the multi-hole jetting function and the anti-clogging function are not affected.

[0087] Embodiment 4

[0088] With reference to Figures 17-18 , the embodiment provides a range hood, which comprises a wind cabinet assembly 7 and a nozzle assembly as described in any one of embodiments 1-3, the wind cabinet assembly 7 comprises a volute and a fan wheel 72 rotatably installed in the volute, and the volute has a surrounding plate 71. The nozzle assembly is detachably installed outside the surrounding plate 71 through a connecting piece 73 (such as a screw), the surrounding plate 71 is provided with an opening at a position corresponding to the nozzle 2, at least part of the nozzle 2 penetrates through the opening and extends into the volute of the wind cabinet assembly 7, and the water outlet direction of the nozzle 2 is towards the fan wheel 72 inside the volute, for cleaning the fan wheel 72 and the inner surface of the volute.

[0089] It can be seen that by installing the nozzle assembly on the surrounding plate 71 of the wind cabinet assembly 7, the multi-hole nozzle can jet and clean the entire fan wheel 72, and can also increase the cleaning range and improve the cleaning efficiency.

[0090] The above only describes some embodiments of the present application. Those skilled in the art can make several modifications and improvements without departing from the inventive concept, and these all belong to the protection scope of the present application.

Claims

1. A nozzle assembly, characterized in that, include: A nozzle seat (1) has an inverted "V"-shaped water flow channel (101). An inlet (111) is located at the top of the nozzle seat (1) corresponding to the highest point of the water flow channel (101). At least two outlets (121) are located at the bottom of the nozzle seat (1). The water flow channel (101) is connected to the inlet (111) and each of the outlets (121), respectively. A nozzle (2) is installed at each of the outlets (121), the nozzle (2) having a water outlet (201) through which water flows. The number of water outlets (121) is two or four, and all of the water outlets (121) are side water outlets, respectively located at opposite ends of the water flow channel (101); or The number of water outlets (121) is three or five, one of which is a central water outlet, which is located at the highest point of the water flow channel (101) and coaxially arranged with the water inlet (111). The other water outlets (121) are side water outlets, which are respectively located at opposite ends of the water flow channel (101). A flow-limiting structure is provided in the central water outlet, and the unit flow rate of the flow-limiting structure is less than the unit flow rate of the side water outlets. The flow-limiting structure is a flow-limiting inlet hole (131), and the outlet hole includes an outlet through hole and the flow-limiting inlet hole (131). The outlet through hole is connected to the water flow channel (101) through the flow-limiting inlet hole (131); or The flow limiting structure is a flow stabilizer (132), which is disposed inside the middle outlet hole; The nozzle (2) includes a nozzle body (21) and at least two diaphragms (22). The nozzle body (21) is fitted outside the outlet (121) and connected to each of the diaphragms (22). A spray nozzle (201) is formed between adjacent diaphragms (22); or The nozzle (2) includes an impeller (23) which is rotatably disposed in the outlet (121) and has a plurality of nozzles (201) spaced apart in the circumferential direction. A positioning structure is provided between the nozzle body (21) and the water outlet (121); or the nozzle (2) further includes a support base (24), the impeller (23) is rotatably installed in the water outlet (121) through the support base (24), and the support base (24) has a water passage hole (241) for water to flow through.

2. The nozzle assembly according to claim 1, characterized in that, The nozzle seat (1) includes a base (11) and a bracket (12). The bracket (12) is disposed at the bottom of the base (11) and connected to the base (11), or a mounting cavity (110) with a downward opening is recessed at the bottom of the base (11), and the bracket (12) is disposed in the mounting cavity (110) and connected to the base (11). A water flow channel (101) is formed between the bracket (12) and the base (11). The water inlet (111) is provided at the top of the base (11), and at least two water outlets (121) are provided at the bottom of the bracket (12).

3. A nozzle assembly according to claim 2, characterized in that, The base (11) is provided with a first flow channel (112) opening toward the bracket (12), and the bracket (12) covers the opening of the first flow channel (112) and together they enclose the water flow channel (101); or The support (12) is provided with a second flow channel (122) opening toward the base (11), and the base (11) covers the opening of the second flow channel (122) and together they enclose the water flow channel (101); or The bracket (12) is provided with a second flow channel (122) opening toward the base (11), and the base (11) is provided with a first flow channel (112) opening toward the bracket (12) at the position corresponding to the second flow channel (122). The second flow channel (122) and the first flow channel (112) are connected and together enclose to form the water flow channel (101).

4. A nozzle assembly according to claim 2, characterized in that, The base (11) and the bracket (12) are detachably connected by a first snap-fit ​​structure or connector.

5. A nozzle assembly according to claim 4, characterized in that, The first buckle structure includes a hook (113), which is disposed outside the bracket (12), and its fixed end is integrally formed with the base (11), and its free end is hooked to the outer side of the bottom of the bracket (12).

6. A nozzle assembly according to claim 5, characterized in that, The first buckle structure also includes a protrusion (123). The bottom of the bracket (12) is provided with a downwardly extending protrusion (123) at the position corresponding to the hook (113). The free end of the hook (113) is hooked to the protrusion (123).

7. A nozzle assembly according to claim 1, characterized in that, It also includes a cover plate (3), which is respectively fitted onto the water outlet (121) and the nozzle (2), and limits and fixes the nozzle (2) to the water outlet (121); or It also includes a sealing sleeve (4), which is fitted onto the water outlet (121) and the nozzle (2) respectively, and limits and fixes the nozzle (2) to the water outlet (121).

8. A nozzle assembly according to claim 1, characterized in that, It also includes a cover plate (3) and a sealing sleeve (4). The cover plate (3) is fitted over the outlet (121) and the nozzle (2) respectively, and limits and fixes the nozzle (2) to the outlet (121). The sealing sleeve (4) is fitted over the cover plate (3) and the nozzle seat (1) and is connected to the cover plate (3) and / or the nozzle seat (1).

9. A nozzle assembly according to claim 7 or 8, characterized in that, The nozzle seat (1) has a mounting cavity (110) facing the cover plate (3), at least a portion of the cover plate (3) is fitted into the mounting cavity (110), and the cover plate (3) and the nozzle seat (1) are detachably connected by a second snap-fit ​​structure and / or fasteners (5); and / or, the cover plate (3) is fixed with a limiting portion (31) extending toward the bracket (12), the limiting portion (31) pressing the bracket (12) tightly onto the base (11).

10. A nozzle assembly according to claim 9, characterized in that, The second snap-fit ​​structure includes a snap-fit ​​part (114) and a slot (32). The snap-fit ​​part (114) is provided on the opposite side walls of the mounting cavity (110). The slot (32) is provided on the outer side wall of the cover plate (3) at the position corresponding to the snap-fit ​​part (114). The slot (32) engages with the snap-fit ​​part (114) to snap together.

11. A nozzle assembly according to claim 10, characterized in that, At least two downwardly extending positioning posts (115) are fixed on the top surface of the mounting cavity (110), all of the positioning posts (115) are located outside the bracket (12), and the cover plate (3) is provided with a connecting hole (33) at the position corresponding to the positioning post (115), and the fastener (5) passes through the connecting hole (33) and is fastened to the positioning post (115).

12. A nozzle assembly according to claim 7 or 8, characterized in that, The cover plate (3) is provided with an annular protrusion (34) at the position corresponding to the nozzle (2). The annular protrusion (34) is fitted around the nozzle (2) and the water outlet (121) and limits and fixes the nozzle (2) to the water outlet (121). A water inlet (341) for water to flow through is provided at the free end of the annular protrusion (34).

13. A nozzle assembly according to claim 12, characterized in that, The sealing sleeve (4) is press-fitted with the outer wall of the nozzle seat (1); and / or, the sealing sleeve (4) is provided with a sleeve (41) at the position corresponding to the annular protrusion (34), the sleeve (41) is fitted outside the annular protrusion (34) and engages with the annular protrusion (34).

14. A range hood, characterized in that, The device includes a blower assembly (7) and a nozzle assembly as described in any one of claims 1-13, wherein the nozzle assembly is detachably mounted outside the enclosure (71) of the blower assembly (7), and the enclosure (71) has an opening at the position corresponding to the nozzle (2), and at least a portion of the nozzle (2) extends into the blower assembly (7) through the opening.

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