Exhaust hood with a flow dividing structure and a flow dividing structure

Abstract

The present application belongs to the technical field of range hood, and discloses a shunt structure and a range hood with the shunt structure. The shunt structure is connected with a nozzle assembly, the nozzle assembly comprises a spray hole for spraying pressure cleaning liquid, and the shunt structure comprises a shunt wheel, the shunt wheel comprises a disc body and a plurality of shunt blades provided with shunt surfaces, the disc body is rotatably connected with the nozzle assembly, the shunt blades are circumferentially arranged on the disc body and surround the spray hole to form the shunt surfaces opposite to the spray hole in the rotating process; when the shunt blades rotate to be opposite to the spray hole, the included angle between the shunt surface and the spraying direction of the spray hole is an acute angle. The shunt structure disclosed by the present application can rotate and shunt the pressure cleaning liquid to comprehensively and stereoscopically spray and clean the object to be cleaned, has a large coverage area and good cleaning effect; the range hood with the shunt structure can comprehensively and effectively clean the wind wheel.

Description

Technical Field

[0001] This invention relates to the field of range hood technology, and more particularly to a diversion structure and a range hood having a diversion structure. Background Technology

[0002] In some cleaning equipment, cleaning nozzles are commonly used to spray cleaning liquid onto the object to be cleaned. The cleaning liquid dissolves the stains on the surface of the object, thus achieving a cleaning effect. In existing technology, common cleaning nozzles typically spray cleaning liquid outward in a straight line from a single point. The nozzle sprays the cleaning liquid onto a specific point on the object to be cleaned, and the cleaning liquid then spreads from that point to the surrounding surface. However, due to the single spray point, the spray coverage area on the object to be cleaned is insufficient, and the diffusion area of ​​the cleaning liquid is limited. This single-point spray cleaning nozzle often results in incomplete cleaning, especially for some strongly adhering oil stains or hard-to-reach areas on the object to be cleaned. Summary of the Invention

[0003] The technical problem solved by this invention is to provide a diversion structure that can divert the pressure cleaning fluid to perform comprehensive, three-dimensional spray cleaning of the object to be cleaned, with a large cleaning coverage area and good cleaning effect.

[0004] The above-mentioned technical problems are solved by the following technical solutions:

[0005] On one hand, a flow-diverting structure is provided to connect a nozzle assembly, the nozzle assembly including a spray orifice configured to spray pressure cleaning fluid, the flow-diverting structure including:

[0006] The flow divider includes a disc and a plurality of flow divider blades with flow divider surfaces. The disc is rotatably connected to the nozzle assembly. The flow divider blades are arranged circumferentially on the disc and surround the nozzle so that the flow divider surfaces are opposite to the nozzle during rotation. When the flow divider blades rotate to be opposite to the nozzle, the angle formed by the flow divider surfaces and the spray direction of the nozzle is an acute angle.

[0007] The diversion structure described in this invention has the following advantages compared to the prior art: The diversion structure includes a diversion wheel with diversion blades. The diversion surface of the diversion blades corresponds to the nozzle orifice of the nozzle assembly. The pressure cleaning fluid ejected from the nozzle orifice has a certain pressure and flow velocity. When the pressure cleaning fluid is sprayed from the nozzle orifice onto the diversion surface of the diversion blades, the pressure cleaning fluid pushes the diversion blades, thereby causing the diversion wheel to rotate. Furthermore, the angle formed between the diversion surface and the spray direction of the nozzle orifice is acute, resulting in a larger effective area of ​​the pressure cleaning fluid on the diversion surface, thus applying a greater thrust. The rotating diversion wheel throws the pressure cleaning fluid sprayed onto the diversion blades outwards, forming a planar spray, increasing the coverage area of ​​the pressure cleaning fluid on the object to be cleaned. The continuous spraying of pressure cleaning fluid from the nozzle onto the diversion blades causes the diversion wheel to rotate continuously, spreading the pressure cleaning fluid to a larger coverage area, preventing dead zones on the object from being missed. The pressure cleaning fluid soaks the oil stains on the surface of the object to be cleaned, and performs a comprehensive and three-dimensional cleaning. It has a large cleaning coverage area, a simple cleaning structure, and good cleaning effect.

[0008] In one embodiment, the diverter blade is perpendicular to the disk body, and the radial angle between the diverter blade and the disk body is an acute angle.

[0009] In one embodiment, a plurality of the flow-diverting blades are distributed at circumferential intervals along the disk body, and a flow-diverting channel is formed between adjacent flow-diverting blades, the flow-diverting channel being connected to the nozzle.

[0010] In one embodiment, the plurality of diverting blades are evenly distributed at circumferential intervals along the disk body, and the radial angles formed by the plurality of diverting blades and the disk body are all the same.

[0011] In one embodiment, the radial angle between the diverter blade and the disk is 25°-45°.

[0012] In one embodiment, the center of the flow divider and the center of gravity of the flow divider are spaced apart.

[0013] In one embodiment, the flow splitting structure further includes a rotation aid component, which includes a first rotation aid and a second rotation aid. The first rotation aid and the second rotation aid are disposed on the side of the disk body away from the flow splitting blades. The first rotation aid protrudes from the disk body, and the second rotation aid is recessed into the disk body.

[0014] On the other hand, a range hood with a diversion structure is provided, including a smoke inlet channel assembly and a nozzle assembly. The smoke inlet channel assembly includes a fan housing body, a fan wheel, and a delivery pipe. The fan wheel is rotatably disposed within the fan housing body and has a fan cavity. The delivery pipe is used to deliver pressurized cleaning fluid. The range hood also includes the diversion structure as described above. The diversion structure is disposed within the fan cavity and connected to the nozzle assembly. The nozzle assembly is connected to the delivery pipe.

[0015] The range hood with a diversion structure described in this invention has the following advantages compared to the prior art: The range hood with a diversion structure has the aforementioned diversion structure. The diversion wheel has multiple diversion blades that correspond to the spray nozzles. The pressure cleaning fluid sprayed from the nozzle assembly acts on the diversion surface, thereby pushing the diversion blades to rotate the diversion wheel. The rotating diversion wheel throws out the pressure cleaning fluid sprayed on the diversion blades, covering different areas along the radial circumference of the impeller. This achieves comprehensive, three-dimensional cleaning of the impeller without requiring it to rotate. More preferably, the pressure of the pressure cleaning fluid in the delivery pipe is adjustable according to the impeller structure and the type of oil fume particles, thereby adjusting the coverage area of ​​the pressure cleaning fluid thrown out by the diversion wheel, preventing dead corners on the impeller from being missed, and ensuring comprehensive cleaning of the impeller.

[0016] In one embodiment, the range hood with a diversion structure further includes:

[0017] A housing is connected to the smoke inlet channel assembly and located within the air cavity. The housing is provided with an interconnected liquid inlet hole and a receiving cavity. The liquid inlet hole is connected to the delivery pipe. One end of the nozzle assembly is disposed within the receiving cavity, and the other end of the nozzle assembly extends out of the receiving cavity and is connected to the flow divider. The nozzle assembly is connected to the delivery pipe through the liquid inlet hole.

[0018] An elastic element, connected between the housing and the nozzle assembly, has an initial state and a compressed state. The elastic element and the pressure cleaning fluid enable the nozzle assembly to drive the flow divider to reciprocate along the axial direction of the housing.

[0019] The lower cover is connected to the other end of the nozzle assembly. The housing has a receiving groove at the end opposite to the receiving cavity. When the elastic element is in its original state, the lower cover closes the receiving groove.

[0020] In one embodiment, the diverter wheel and the wind turbine are coaxially arranged. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the flow splitting structure provided in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the flow divider provided in an embodiment of the present invention;

[0023] Figure 3 This is a top view of the flow divider provided in an embodiment of the present invention;

[0024] Figure 4 This is a partial structural diagram of a range hood with a flow-diverting structure provided in an embodiment of the present invention;

[0025] Figure 5 This is a partial structural disassembly diagram of a range hood with a flow-diverting structure provided in an embodiment of the present invention;

[0026] Figure 6 A cross-sectional view of the flow splitting structure and nozzle assembly provided in the embodiments of the present invention. Figure 1 ;

[0027] Figure 7 A cross-sectional view of the flow splitting structure and nozzle assembly provided in the embodiments of the present invention. Figure 2 ;

[0028] Figure 8 This is a structural disassembly diagram of the flow splitting structure and nozzle assembly provided in an embodiment of the present invention.

[0029] Label Explanation:

[0030] 1. Shell; 11. Liquid inlet; 12. Receiving cavity; 13. Upper shell; 14. Lower shell; 141. Guide hole; 142. Receiving groove; 15. Lower cover;

[0031] 2. Nozzle assembly; 21. Spray hole; 22. Elastic element; 23. Hydraulic pressure movable plug; 231. Pressure-bearing groove; 2311. Pressure-bearing end face; 232. Guide cavity; 233. Slot; 24. Flow divider; 241. Fixing element; 2411. Connecting groove; 242. Flow guide element; 2421. Flow guide channel; 2422. Flow guide slope; 2423. Connecting element; 2424. Slot; 243. Flow guide plate; 2431. Insert tooth; 25. Clamping plate; 26. Sealing gasket; 27. Sealing ring; 28. Flow guide cover; 281. Flow guide hole;

[0032] 3. Flow divider; 30. Flow divider channel; 31. Disc; 32. Flow divider blade; 321. Flow divider surface; 33. First auxiliary rotating component; 34. Second auxiliary rotating component;

[0033] 100. Smoke inlet duct assembly; 101. Air handling unit body; 102. Impeller; 1021. Air cavity; 103. Conveying pipe; 104. Air inlet screen; 105. Motor. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," and "third" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] like Figures 1-3As shown, this embodiment of the invention provides a flow-dividing structure connected to a nozzle assembly 2. The nozzle assembly 2 includes a spray hole 21 for spraying pressure cleaning fluid. This embodiment of the invention does not limit the composition or working pressure of the pressure cleaning fluid. The flow-dividing structure includes a flow-dividing wheel 3, which includes a disc 31 and a plurality of flow-dividing blades 32 with flow-dividing surfaces 321. The disc 31 is rotatably connected to the nozzle assembly 2. The flow-dividing blades 32 are circumferentially arranged on the disc 31 and surround the spray hole 21 to form a flow-dividing surface 321 that is opposite to the spray hole 21 during rotation. When the flow-dividing surface 321 of the flow-dividing blades 32 rotates to be opposite to the spray hole 21, the angle formed by the flow-dividing surface 321 and the spray direction of the spray hole 21 is an acute angle. It is understood that the pressure cleaning fluid ejected from the nozzle 21 has a certain pressure and flow rate. When the nozzle 21 corresponds to the flow-dividing surface 321 of the flow-dividing blade 32, the angle formed between the flow-dividing surface 321 and the spray direction of the nozzle 21 is an acute angle. Therefore, the sprayed pressure cleaning fluid acts on the flow-dividing surface 321, which will push the flow-dividing blade 32, thereby causing the flow-dividing wheel 3 to rotate. Moreover, this acute angle setting makes the area of ​​action of the pressure cleaning fluid ejected from the nozzle 21 on the flow-dividing surface 321 larger, thus applying a greater thrust. The rotating flow-dividing wheel 3 throws the pressure cleaning fluid sprayed on the flow-dividing blade 32 out, forming a planar spray, which increases the coverage area of ​​the pressure cleaning fluid on the object to be cleaned. As the nozzle 21 continuously ejects pressure cleaning fluid that acts on the flow-dividing blade 32, the flow-dividing wheel 3 will continue to rotate, spreading the pressure cleaning fluid to a larger coverage area, avoiding the absence of spraying in some dead corners on the object to be cleaned. The pressure cleaning fluid soaks the oil stains on the surface of the object to be cleaned, and performs a comprehensive and three-dimensional cleaning. It has a large cleaning coverage area, a simple cleaning structure, and good cleaning effect.

[0039] Specifically, in this embodiment of the invention, the flow-diverting blade 32 is perpendicular to the disk body 31, and there is an acute angle between the flow-diverting blade 32 and the radial direction of the disk body 31. The axis of the nozzle 21 is horizontally arranged, and the flow-diverting blade 32 is vertically arranged on the disk body 31, forming an acute angle with the radial direction of the disk body 31. This ensures that the flow-diverting surface 321 on the flow-diverting blade 32 has an acute angle with the axis of the nozzle 21, resulting in a greater thrust exerted by the pressure cleaning fluid on the flow-diverting blade 32. In other embodiments, the tilt angle of the flow-diverting blade 32 relative to the radial direction of the disk body 31 is adjusted according to the axial angle of the nozzle 21. The flow-diverting blade 32 may not be perpendicular to the disk body 31, and this embodiment is not the limitation.

[0040] As a preferred embodiment, multiple diverting blades 32 are distributed circumferentially along the disc body 31, enabling the diverting wheel 3 to rotate continuously; a diverting channel 30 is formed between adjacent diverting blades 32, and the diverting channel 30 is connected to the nozzle 21. The pressure cleaning fluid sprayed by the nozzle 21 onto the diverting blades 32 is thrown out of the diverting wheel 3 along the diverting channel. The diverting channel 30 provides a certain limit to the pressure cleaning fluid, preventing the pressure cleaning fluid from splashing.

[0041] Furthermore, multiple flow divider blades 32 are evenly distributed along the circumference of the disc 31, and the radial angles formed by the multiple flow divider blades 32 and the disc 31 are all the same. When there are multiple spray holes 21, the multiple flow divider blades 32 can withstand the impact of the pressure cleaning fluid at the same time. Because the radial angles formed by the multiple flow divider blades 32 and the disc 31 are all the same, the pushing of the flow divider blades 32 on the disc 31 is in the same direction. The multiple flow divider blades 32 can simultaneously make the disc 31 rotate clockwise or counterclockwise, ensuring the normal rotation of the disc 31 and avoiding interference of the pushing force between the multiple flow divider blades 32.

[0042] Furthermore, the radial angle between the splitter blade 32 and the disk 31 is 25°-45°, such as... Figure 3 As shown in the figure, angle α is the radial angle between the flow divider blade 32 and the disk 31. The flow divider blade 32, which is set at an angle of 25°-45°, has more pressure cleaning fluid acting on it. The pressure cleaning fluid exerts a greater thrust on the flow divider blade 32, making it easier to drive the disk 31 to rotate.

[0043] As a preferred embodiment, the center of the diverter 3 and its center of gravity are spaced apart. This means that the center of the diverter 3 is its rotation center, and its center of gravity is its mass center. When the center of the diverter 3 and its center of gravity are not concentric, it is easier to disperse the thrust of the pressure cleaning fluid acting on the disc 31 through the diverting blades 32, making the diverter 3 easier to rotate. The spaced-apart arrangement between the center of the diverter 3 and its center of gravity can be formed by the asymmetry of the shape of the diverter 3, or by the uneven mass distribution inside the diverter 3; this embodiment of the invention does not limit this.

[0044] Specifically, the flow divider 3 in this embodiment of the invention further includes a rotation aid assembly, which includes a first rotation aid 33 and a second rotation aid 34. The first rotation aid 33 and the second rotation aid 34 are disposed on the side of the disc body 31 opposite to the flow divider blade 32. The first rotation aid 33 protrudes from the disc body 31, and the second rotation aid 34 is recessed into the disc body 31. The first rotation aid 33 and the second rotation aid 34 are symmetrically disposed on the disc body 31, with the first rotation aid 33 protruding from the side of the disc body 31 opposite to the flow divider blade 32 and the second rotation aid 34 recessed into the side of the disc body 31 opposite to the flow divider blade 32. In this embodiment of the invention, the first rotation aid 33 is a protrusion on the surface of the disc body 31, and the second rotation aid 34 is a groove on the surface of the disc body 31. This embodiment does not limit the specific shapes of the first rotation aid 33 and the second rotation aid 34. The first auxiliary rotating component 33 and the second auxiliary rotating component 34 can increase the asymmetry of the diverter wheel 3, so that the center and the center of gravity of the diverter wheel 3 are spaced apart; when the pressure cleaning fluid is sprayed onto the diverter blade 32, the asymmetrical diverter wheel 3 is easier to rotate, avoiding the diverter wheel 3 from remaining in a balanced state and not moving.

[0045] This invention also provides a range hood including the above-described diversion structure. The range hood includes a smoke inlet channel assembly 100 and a nozzle assembly 2, such as... Figure 4 and Figure 5 As shown, the smoke inlet channel assembly 100 includes a fan body 101, a fan wheel 102, and a conveying pipe 103. The fan wheel 102 is rotatably disposed inside the fan body 101 and has a fan cavity 1021. The conveying pipe 103 is used to convey pressurized cleaning fluid. The smoke inlet channel assembly 100 also includes a motor 105, which drives the fan wheel 102 to rotate, generating negative pressure to extract oil fumes. Therefore, a large amount of oil fume particles often accumulate on the fan wheel 102, requiring frequent cleaning.

[0046] The range hood of this embodiment also includes the diversion structure described above. The diversion structure is disposed within the air cavity 1021 and connected to the nozzle assembly 2. The nozzle assembly 2 is connected to the delivery pipe 103. Specifically, the nozzle assembly 2 is connected to the air cabinet body 101 and disposed within the air cavity 1021. The liquid inlet 11 of the nozzle assembly 2 is connected to the delivery pipe 103. The diversion wheel 3 has multiple diversion blades 32 that correspond to the spray holes 21. The pressure cleaning fluid sprayed from the spray holes 21 of the nozzle assembly 2 pushes the diversion blades 32 to rotate the diversion wheel 3. The rotating diversion wheel 3 throws out the pressure cleaning fluid sprayed on the diversion blades 32, covering different areas along the radial circumference of the impeller 102. Comprehensive and three-dimensional cleaning of the impeller 102 can be achieved without the impeller 102 rotating. More preferably, depending on the structure of the impeller 102 and the type of oil fume particles, the pressure of the pressure cleaning fluid in the delivery pipe 103 is adjustable, thereby adjusting the coverage area of ​​the pressure cleaning fluid thrown out by the diverter 3, avoiding the fact that some dead corners on the impeller 102 cannot be sprayed, and ensuring a thorough cleaning of the impeller 102.

[0047] As a preferred embodiment, the range hood with a diversion structure further includes a housing 1, an elastic element 22, and a lower cover 15. The housing 1 is connected to the smoke inlet channel assembly 100 and located within the air cavity 1021. The housing 1 is provided with an interconnected liquid inlet hole 11 and a receiving cavity 12. The liquid inlet hole 11 is connected to a delivery pipe 103. One end of the nozzle assembly 2 is located within the receiving cavity 12, and the other end of the nozzle assembly 2 extends out of the receiving cavity 12 and is connected to a diverter wheel 3. The nozzle assembly 2 is connected to the delivery pipe 103 through the liquid inlet hole 11. The liquid inlet hole 11 is used to introduce pressure cleaning fluid, which enters the receiving cavity 12 through the liquid inlet hole 11. The elastic element 22 is located between the housing 1 and the nozzle assembly 2, and the elastic element 22 has an initial state and a compressed state. The elastic element 22 and the pressure cleaning fluid enable the nozzle assembly 2 to drive the diverter wheel 3 to reciprocate along the axial direction of the housing 1. The lower cover 15 is connected to the other end of the nozzle assembly 2. The housing 1 is provided with a receiving groove 142 at the end away from the receiving cavity 12. When the elastic member 22 is in its original state, the lower cover 15 closes the receiving groove 142.

[0048] Specifically, the nozzle assembly 2 has at least one spray hole 21 extending out of the receiving cavity 12. The spray hole 21 connects to the receiving cavity 12, and the pressurized cleaning fluid can drive the nozzle assembly 2 to move axially. The pressurized cleaning fluid is sprayed out from the receiving cavity 12 through the spray hole 21. The nozzle assembly 2 drives the diverter wheel 3 to move axially relative to the housing 1. The spray hole 21 of the nozzle assembly 2 extends out of the housing 1, thereby corresponding to different positions of the object to be cleaned and increasing the coverage area of ​​the pressurized cleaning fluid. At the same time, as the nozzle assembly 2 reciprocates along the axial direction of the housing 1, the diverter wheel 3 can correspond to different positions of the impeller 102 along the axial direction. The diverter wheel 3 enables the pressurized cleaning fluid to be sprayed along the axial direction of the impeller 102. The pressurized cleaning fluid thrown out by the diverter wheel 3 can be sprayed in a spiral shape, resulting in a better cleaning effect. The lower cover 15 is connected to the end of the nozzle assembly 2 away from the liquid inlet 11 to selectively close the receiving groove 142. When the nozzle assembly 2 moves axially relative to the housing 1 so that the elastic element 22 is in its original state, the lower cover 15 closes the receiving groove 142, and the flow divider 3 is closed in the receiving groove 142 to prevent oil fumes from entering the receiving groove 142 and causing the flow divider 3 to be contaminated by oil fumes. When the nozzle assembly 2 moves axially relative to the housing 1 so that the elastic element 22 is in a compressed state, the lower cover 15 opens the receiving groove 142, and the nozzle assembly 2 together with the flow divider 3 extends out of the receiving groove 142 to perform spray cleaning operation.

[0049] As a preferred embodiment, the diverter wheel 3 and the air handling unit body 101 are coaxially arranged. The axis of the disc 31 coincides with the axis of the air chamber 1021. The pressure cleaning fluid sprayed from the nozzle 21 pushes the diverter blades 32, thereby causing the diverter wheel 3 to rotate. The rotating diverter wheel 3 throws out the pressure cleaning fluid sprayed on the diverter blades 32, covering different areas along the radial circumference of the impeller 102. At the same time, the nozzle assembly 2 can reciprocate along the axial direction of the housing 1, so that the nozzle 21 and the diverter wheel 3 can move along the axial direction of the air chamber 1021. Therefore, the nozzle 21 and the diverter wheel 3 can correspond to different areas along the axial direction of the impeller 102, and the diverter wheel 3 enables the pressure cleaning fluid to be sprayed along the axial direction of the impeller 102.

[0050] As a preferred embodiment, the smoke inlet channel assembly 100 further includes an air inlet screen 104, which is connected to the air handling unit body 101 and corresponds to the impeller 102. The housing 1 is detachably connected to the air inlet screen 104, and the delivery pipe 103 is located on the side of the air inlet screen 104 away from the impeller 102. The air inlet screen 104 can perform preliminary filtration of the oil fumes entering the impeller 102, preventing large particles of impurities from entering the motor 105. The housing 1 is detachably connected to the air inlet screen 104 and coaxially arranged with the impeller 102, making the cleaning effect of the pressure cleaning fluid on the impeller 102 more uniform.

[0051] The following describes the axial movement structure and injection structure of the nozzle assembly 2 according to embodiments of the present invention. Figures 6-8 As shown.

[0052] Specifically, the nozzle assembly 2 is disposed within the housing 1. Pressurized cleaning fluid flows into the receiving cavity 12 along the inlet hole 11, thereby pushing the nozzle assembly 2 to move axially along the housing 1. It can be understood that the pressurized cleaning fluid has a certain pressure. When it enters the receiving cavity 12 through the inlet hole 11, the pressurized cleaning fluid exerts a thrust on the nozzle assembly 2 facing the inlet hole 11, causing the nozzle assembly 2 to move axially away from the inlet hole 11, thus realizing the axial movement of the nozzle 21 along the housing 1. An elastic element 22 is disposed within the receiving cavity 12, with its two ends connected to the nozzle assembly 2 and the housing 1 respectively. The elastic element 22 always has a tendency to push the nozzle assembly 2 towards the inlet hole 11; that is, the thrust exerted by the elastic element 22 on the nozzle assembly 2 and the thrust exerted by the pressurized cleaning fluid on the nozzle assembly 2 are in opposite directions. Therefore, the pressure cleaning fluid first needs to overcome the thrust exerted by the elastic element 22 on the nozzle assembly 2. When the pressure exerted by the pressure cleaning fluid on the nozzle assembly 2 reaches a certain value, the nozzle assembly 2 will move axially away from the inlet hole 11, so that the nozzle 21 corresponds to different areas of the object to be cleaned, such as... Figure 7 As shown; when the nozzle assembly 2 needs to move in the reverse direction, the pressure of the pressure cleaning fluid is gradually reduced. When the thrust applied by the elastic element 22 to the nozzle assembly 2 is greater than the pressure of the pressure cleaning fluid, the elastic element 22 pushes the nozzle assembly 2 to move towards the inlet hole 11, eventually returning to its initial position, as shown. Figure 6 As shown. In this embodiment of the invention, the elastic element 22 is a compression spring, fitted around the nozzle assembly 2, with one end connected to the top of the nozzle assembly 2 and the other end connected to the housing 1, thereby applying a stable elastic force to the nozzle assembly 2. In other embodiments, the elastic element 22 may also be a sheet spring, disc spring, or other elastic structure, and is not limited to this embodiment.

[0053] Specifically, the nozzle assembly 2 includes a water-pressure movable plug 23, which is slidably disposed within the receiving cavity 12. The water-pressure movable plug 23 has a pressure-bearing groove 231 and a guide cavity 232 that are interconnected. The pressure-bearing groove 231 has a pressure-bearing end face 2311, which corresponds to the liquid inlet 11. The pressure-bearing end face 2311 is an annular end face. The pressurized cleaning fluid flows into the receiving cavity 12 from the liquid inlet 11 and applies pressure to the pressure-bearing end face 2311, resulting in a more uniform force distribution on the nozzle assembly 2 and preventing uneven force distribution that could cause the nozzle assembly 2 to slide and jam. Furthermore, the pressure-bearing end face 2311 increases the force-bearing area of ​​the nozzle assembly 2, making it easier for the pressurized cleaning fluid to push the nozzle assembly 2. The pressurized cleaning fluid enters the guide cavity 232 from the pressure-bearing groove 231. The guide cavity 232 passes through the water-pressure movable plug 23 to connect with the spray hole 21, allowing the pressurized cleaning fluid to be sprayed out from the spray hole 21.

[0054] Furthermore, the nozzle assembly 2 also includes a flow divider 24, which is detachably connected to the end of the hydraulic movable plug 23 away from the inlet hole 11 and located outside the housing 1. The flow divider 24 can limit the axial movement of the hydraulic movable plug 23, preventing the hydraulic movable plug 23 from sliding backward and completely entering the receiving cavity 12 under the action of the elastic member 22. The detachable structure of the flow divider 24 also facilitates the assembly of the nozzle assembly 2. The spray hole 21 is provided on the flow divider 24, which can divert and guide the pressure cleaning fluid in the guide cavity 232 to flow to the spray hole 21.

[0055] As a preferred embodiment, the diverter seat 24 includes a fixing member 241, a guide member 242, and a guide plate 243. The fixing member 241 is snapped onto the hydraulic movable plug 23, and the guide member 242 is detachably connected to the fixing member 241. The detachable connection structure provided in this embodiment is as follows: the fixing member 241 is provided with two open connecting grooves 2411; correspondingly, the guide member 242 is provided with two connecting members 2423; the fixing member 241 and the guide member 242 are connected by rotating them relative to each other, and the connecting members 2423 are snapped into the connecting grooves 2411; the connection is achieved by rotating them in the opposite direction. The guide plate 243 is disposed between the fixing member 241 and the guide member 242, forming at least one guide channel 2421 between the guide plate 243 and the guide member 242. In this embodiment of the invention, the guide plate 243 is connected to the guide member 242 to ensure the stability of the guide channel 2421. Moreover, this structural form can reduce the processing difficulty of the diverter seat 24. Furthermore, the guide vane 243 is provided with insert teeth 2431, and correspondingly, the guide member 242 is provided with slots 2424; the insert teeth 2431 are inserted into the slots 2424 to connect the guide vane 243 and the guide member 242. Simultaneously, the guide member 242 is provided with a guide slope 2422, which is located within the guide channel 2421. The two ends of the guide channel 2421 are respectively connected to the guide cavity 232 and the nozzle 21, thereby guiding the pressurized cleaning fluid in the guide cavity 232 to the nozzle 21 for ejection. By changing the inclination angle of the guide slope 2422, the axial direction of the nozzle 21 can be changed, thereby changing the direction of the ejected pressurized cleaning fluid, resulting in a greater thrust of the pressurized cleaning fluid on the splitter vane 32. In this embodiment of the invention, the two ends of the guide slope 2422 are straight segments, and the middle is an arc segment. The arc segment connects the straight segments at both ends, thereby changing the flow direction of the pressure cleaning fluid. This changes the flow direction of the pressure cleaning fluid from along the axial direction of the housing 1 to perpendicular to the axial direction of the housing 1. The pressure cleaning fluid sprayed vertically from the nozzle 21 onto the housing 1 has a better scouring and cleaning effect on the blades. Moreover, the arc-shaped surface of the guide slope 2422 can avoid the pressure cleaning fluid from impacting the nozzle assembly 2, ensuring the continuity of the pressure cleaning fluid sprayed from the nozzle 21.

[0056] As a preferred embodiment, the flow divider seat 24 is provided with two flow guide channels 2421, which are symmetrically arranged along the axial direction of the hydraulic movable plug 23. The two flow guide channels 2421 are symmetrically arranged on both sides of the hydraulic movable plug 23. Correspondingly, two nozzles 21 are also provided. Thus, the two nozzles 21 can push the flow divider blades 32 from both sides of the flow divider 3, increasing the driving force and making the rotation of the flow divider 3 more stable. Furthermore, the two nozzles 21 can balance the reaction force exerted on the hydraulic movable plug 23 when the pressure cleaning fluid is sprayed from the nozzles 21, avoiding uneven force on the hydraulic movable plug 23 and affecting the stability and reliability of its axial reciprocating motion.

[0057] Specifically, the nozzle assembly 2 also includes a retaining plate 25 and a sealing gasket 26. A groove 233 is provided at the end of the hydraulic movable plug 23 away from the inlet hole 11. The retaining plate 25 is disposed between the fixing member 241 and the guide member 242, and is fitted into the groove 233. The retaining plate 25 applies an axial force to the fixing member 241 and the guide member 242, which can further increase the connection reliability of the fixing member 241 and the guide member 242, and prevent the flow divider 24 from axially moving on the hydraulic movable plug 23. In this embodiment of the invention, the retaining plate 25 uses a retaining ring with an opening for easy installation. The sealing gasket 26 is fitted onto the hydraulic movable plug 23 and disposed between the fixing member 241 and the retaining plate 25. The sealing gasket 26 fits against the fixing member 241, reducing leakage of pressure cleaning fluid from the gap between the fixing member 241 and the hydraulic movable plug 23, thereby avoiding affecting the pressure and spray volume of the pressure cleaning fluid sprayed from the nozzle 21, and ensuring the cleaning effect.

[0058] As a preferred embodiment, the housing 1 includes a detachably connected upper housing 13 and a lower housing 14. An inlet hole 11 is disposed on the upper housing 13, and the lower housing 14 is provided with a guide hole 141. The nozzle assembly 2 is slidably disposed within the guide hole 141. In this embodiment, the upper housing 13 and the lower housing 14 are threadedly connected, resulting in a simple and reliable connection structure. The lower housing 14 protrudes towards the inlet hole 11 to form a receiving groove 142, and the end of the nozzle assembly 2 away from the inlet hole 11 is located within the receiving groove 142.

[0059] As a preferred embodiment, the nozzle assembly 2 further includes a flow guide 28 and a sealing ring 27. The flow guide 28 is detachably connected to the housing 1 and is disposed within the receiving cavity 12, surrounding one end of the nozzle assembly 2. The flow guide 28 has multiple through-holes 281, and one end of the flow guide 28 is open, connected to the lower housing 14. Specifically, the lower housing 14 has a fixing groove for mounting the flow guide 28. The side of the flow guide 28 and the side corresponding to the open end are provided with evenly distributed flow guide holes 281. Pressure cleaning fluid can pass through the flow guide holes 281 and evenly fill the receiving cavity 12. Subsequently, pressure cleaning fluid continues to be injected into the receiving cavity 12, continuously increasing the pressure on the water pressure movable plug 23. When the pressure exceeds the elastic force of the elastic element 22, it pushes the water pressure movable plug 23 to move. The flow guide 28 ensures that the force of the pressure cleaning fluid on the water pressure movable plug 23 is evenly distributed, avoiding impact on the water pressure movable plug 23. The sealing ring 27 is fitted onto one end of the nozzle assembly 2 located within the receiving cavity 12 and can abut against the lower housing 14. Preferably, the sealing ring 27 is fitted onto the outer wall of the guide cavity 232 in the water pressure movable plug 23 and abuts against the pressure bearing groove 231. When the water pressure movable plug 23 slides away from the liquid inlet 11, the water pressure movable plug 23 will abut against the lower housing 14 when it reaches its maximum stroke. At this time, the sealing ring 27 can reduce the impact force of the water pressure movable plug 23 on the lower housing 14 and prevent the pressure cleaning fluid from leaking from the gap between the lower housing 14 and the water pressure movable plug 23.

[0060] It should be noted that the axial movement structure and spray structure of the nozzle assembly 2 described above are only examples. The diversion structure can be applied to nozzles with different structures to divert the pressure cleaning fluid and achieve comprehensive, three-dimensional spray cleaning of the object to be cleaned.

[0061] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0062] The specific embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A flow dividing structure connecting a nozzle assembly (2) which communicates with a delivery pipe (103) for delivering a pressure washing liquid, the nozzle assembly (2) including a spray hole (21) for spraying the pressure washing liquid, characterized in that, The diversion structure includes: The flow divider (3) includes a disc (31) and a plurality of flow divider blades (32) with flow divider surfaces (321). The disc (31) is rotatably connected to the nozzle assembly (2). The flow divider blades (32) are arranged circumferentially on the disc (31) and surround the nozzle (21) to form the flow divider surface (321) facing the nozzle (21) during rotation. When the flow divider blades (32) rotate to face the nozzle (21), the angle formed by the flow divider surface (321) and the spray direction of the nozzle (21) is an acute angle. Multiple flow divider blades (32) are evenly distributed along the circumferential interval of the disc body (31), and a flow divider channel (30) is formed between adjacent flow divider blades (32), and the flow divider channel (30) is connected to the nozzle (21); It also includes: a housing (1), which is provided with an inlet hole (11) and a receiving cavity (12) that are interconnected. The inlet hole (11) is connected to the delivery pipe (103). One end of the nozzle assembly (2) is disposed in the receiving cavity (12), and the other end of the nozzle assembly (2) extends out of the receiving cavity (12) and is connected to the flow divider (3). The nozzle assembly (2) is connected to the delivery pipe (103) through the inlet hole (11). The elastic element (22) is connected between the housing (1) and the nozzle assembly (2) and has an original state and a compressed state. The elastic element (22) and the pressure cleaning fluid enable the nozzle assembly (2) to drive the flow divider (3) to reciprocate along the axial direction of the housing (1). The lower cover (15) is connected to the other end of the nozzle assembly (2). The housing (1) has a receiving groove (142) at the end away from the receiving cavity (12). When the elastic element (22) is in its original state, the lower cover (15) closes the receiving groove (142).

2. The flow splitting structure of claim 1, wherein, The flow divider blade (32) is perpendicular to the disk body (31), and the radial angle between the flow divider blade (32) and the disk body (31) is an acute angle.

3. The flow splitting structure of claim 1, wherein, The radial angles formed by the plurality of the splitter blades (32) and the disk (31) are all the same.

4. The flow splitting structure according to claim 2 or 3, characterized in that The radial angle between the diverter blade (32) and the disk (31) is 25°-45°.

5. The flow splitting structure of claim 1, wherein, The center of the flow divider (3) and the center of gravity of the flow divider (3) are spaced apart.

6. The flow splitting structure of claim 5, wherein, The diversion structure also includes a rotation aid component, which includes a first rotation aid (33) and a second rotation aid (34). The first rotation aid (33) and the second rotation aid (34) are disposed on the side of the disk body (31) away from the diversion blade (32). The first rotation aid (33) protrudes from the disk body (31), and the second rotation aid (34) is recessed into the disk body (31).

7. A range hood with a flow distribution structure, comprising an inlet channel assembly (100) and a nozzle assembly (2), the inlet channel assembly (100) comprising a wind cabinet body (101), a wind wheel (102) and a delivery pipe (103), the wind wheel (102) being rotatably arranged in the wind cabinet body (101), the wind wheel (102) being provided with a wind cavity (1021), the delivery pipe (103) being used for delivering pressure cleaning liquid, characterized in that, The range hood further includes a flow diversion structure as described in any one of claims 1-6, wherein the flow diversion structure is disposed within the air cavity (1021).

8. The range hood having a flow splitting structure according to claim 7, characterized in that, The housing (1) is connected to the smoke inlet channel assembly (100) and is located inside the air cavity (1021).

9. The range hood with a diversion structure according to claim 7, characterized in that, The diverter wheel (3) and the wind turbine (102) are coaxially arranged.

Images