A range hood

Abstract

The utility model provides an oil -smog fan, including the casing and the volute exhaust component of setting in the casing, the casing is provided with the air outlet, the volute exhaust component includes volute, motor and impeller, the motor is connected with the impeller transmission, the air outlet of volute is connected with the air outlet, the casing bottom is provided with the oil cup, the central axis of impeller is inclined to set up to the oil cup, and the bottom end of impeller is located the oil cup right above, still be provided with nanometer bubble water generating device in the casing, nanometer bubble water generating device is used to produce nanometer bubble water and spray to the impeller surface. The utility model utilizes nanometer bubble water generating device produces nanometer bubble water and sprays to the impeller surface, can clean the impeller surface, and the impeller is inclined to set up to the oil cup, can make the sewage produced in the cleaning process fall into the oil cup storage, need not to add structural member for collecting sewage.

Description

Technical Field

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

[0002] Range hoods are common electrical appliances used to purify kitchen fumes. During operation, fumes and other substances produced by the stove enter the range hood. After a period of use, a certain amount of grease will accumulate on the volute and impeller. This grease buildup can breed bacteria, which can then harm human health.

[0003] Currently, there are many cleaning solutions for range hoods. Some of these solutions use liquid media to clean the impeller blades, such as water or water that is heated, atomized, or vaporized. However, there are very few cleaning solutions that use nano-bubble water, which limits the options available to users. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a range hood that can use nano bubble water for oil stain cleaning, solving the problem that there are few range hoods that use nano bubble water cleaning solutions, resulting in limited options for users.

[0005] To solve the above-mentioned technical problems, the technical solution used in this utility model is as follows:

[0006] The present invention discloses a range hood, comprising a housing and a volute exhaust assembly disposed in the housing. The housing is provided with an exhaust port. The volute exhaust assembly includes a volute, a motor and an impeller. The motor is drivenly connected to the impeller. The exhaust port of the volute is connected to the exhaust port. An oil cup is provided at the bottom of the housing. The central axis of the impeller is inclined toward the oil cup, and the bottom end of the impeller is located directly above the oil cup.

[0007] The housing is also equipped with a nano bubble water generator, which is used to generate nano bubble water and spray it onto the impeller surface.

[0008] Preferably, the nanobubble water generator includes a storage box, a water pump, an electrolysis device, and a nozzle. The storage box and the water pump are fixed to the housing. The water pump, the electrolysis device, and the nozzle are connected to form a water flow path, which draws water from the storage box, electrolyzes it through the electrolysis device, and then sprays it out from the nozzle.

[0009] More preferably, the housing includes a top plate, a back plate, and a side plate, which together form a receiving cavity, and the volute exhaust assembly and the nanobubble water generator are both housed within the receiving cavity;

[0010] The liquid storage box is located on the lower side of the top plate, the water pump is fixed to the inner side of the back plate, the water pump is located below the liquid storage box, and the water pump is connected to the liquid storage box from the bottom.

[0011] More preferably, the liquid storage box, water pump, electrolysis device and nozzle are connected in sequence, and the electrolysis device is located on one side of the volute.

[0012] The nozzle is a bent pipe. The first end of the nozzle is connected to the electrolysis device. The first end of the nozzle extends from one side of the volute towards the impeller cavity and then bends towards the impeller chassis. It continues to extend along the extension direction of the impeller blades, so that the second end of the nozzle extends towards the impeller chassis. The bent pipe wall is provided with spray holes that spray towards the impeller blades.

[0013] More preferably, the distance between the first end of the nozzle and the horizontal plane is greater than the distance between the second end of the nozzle and the horizontal plane.

[0014] More preferably, the nozzle includes a first pipe section and a second pipe section, one end of the first pipe section and the second pipe section are connected to form the bend, the first pipe section is placed radially along the impeller, the second pipe section is placed axially along the impeller, the other end of the first pipe section is connected to the electrolysis device, and the other end of the second pipe section extends toward the base of the impeller.

[0015] The second pipe section has the spray holes on its pipe wall, and the spray holes face the blades of the impeller.

[0016] More preferably, the diameter of the nozzle is 1 / 3 to 1 / 4 of the inner diameter of the nozzle.

[0017] More preferably, the electrolysis device includes an electrolysis box, a first electrode, and a second electrode, wherein one end of the first electrode and the second electrode are used to connect to electricity, and the other end is inserted into the electrolysis box;

[0018] The electrolysis box is provided with an inlet and an outlet. The inlet is connected to the liquid storage box, and the outlet is connected to the nozzle.

[0019] More preferably, the impeller surface is coated with a hydrophilic and oleophobic coating.

[0020] More preferably, the thickness of the hydrophilic and oleophobic coating is 2 to 6 micrometers;

[0021] And / or, the hydrophilic angle of the hydrophilic-oleophobic coating is less than 10°.

[0022] Compared with the prior art, the beneficial effects of the range hood described in this utility model are mainly reflected in:

[0023] This invention utilizes a nano-bubble water generator installed inside the housing to generate nano-bubble water, which is then sprayed onto the impeller surface for cleaning. Simultaneously, by tilting the impeller towards the oil cup, wastewater generated during the cleaning process can fall into the oil cup for collection, eliminating the need for additional structural components for wastewater collection. Attached Figure Description

[0024] The above and other objects, features, and advantages of this invention will become clearer through a more detailed description of the preferred embodiments shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of this invention.

[0025] Figure 1 A three-dimensional structure of a range hood provided in this embodiment of the utility model. Figure 1 ;

[0026] Figure 2 A three-dimensional structure of a range hood provided in this embodiment of the utility model. Figure 2 ;

[0027] Figure 3 for Figure 2 A partial structural diagram;

[0028] Figure 4 A three-dimensional structural diagram of the nozzle provided in an embodiment of this utility model;

[0029] Figure 5 This is a three-dimensional cross-sectional view of the electrolysis device provided in an embodiment of the present utility model;

[0030] Figure 6 A microscopic decontamination diagram of the hydrophilic and oleophobic coating provided in this embodiment of the present invention;

[0031] Figure label:

[0032] Shell 100, top plate 110, back plate 120, side plate 130, receiving cavity 140;

[0033] 200 volute exhaust assembly, 210 volute, 220 motor, 230 impeller, 231 blade, 232 chassis;

[0034] Nano bubble water generator 300, liquid storage box 310, water pump 320, electrolysis device 330, electrolysis box body 331, first electrode 332, second electrode 333, nozzle 340, first pipe section 341, second pipe section 342.

[0035] Oil cup 1, spray nozzle 2, water inlet 3, water outlet 4, exhaust vent 5, hydrophilic and oleophobic coating 6. Detailed Implementation

[0036] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand this utility model and implement it. However, the embodiments are not intended to limit this utility model. In this embodiment, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "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 utility model 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 limiting this utility model.

[0037] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to and integrated with the other element, or there may be an intervening element present. The terms "mounted," "one end," "the other end," and similar expressions used in this invention are for illustrative purposes only.

[0038] This embodiment provides a range hood, such as... Figures 1 to 6 As shown, the device includes a housing 100 and a volute exhaust assembly 200 disposed in the housing 100. The housing 100 is provided with an exhaust port 5. The volute exhaust assembly 200 includes a volute 210, a motor 220 and an impeller 230. The motor 220 is connected to the impeller 230 in a transmission connection. The air outlet of the volute 210 is connected to the exhaust port 5. An oil cup 1 is provided at the bottom of the housing 100. The central axis of the impeller 230 is inclined toward the oil cup 1, and the bottom end of the impeller 230 is located directly above the oil cup 1 to ensure that the sewage flowing down from the impeller 230 can fall freely into the oil cup 1.

[0039] The housing 100 is also equipped with a nano bubble water generator 300, which is used to generate nano bubble water and spray it onto the surface of the impeller 230.

[0040] This invention provides a nano bubble water generator 300 inside the housing 100. The nano bubble water generator 300 generates nano bubble water and sprays it onto the surface of the impeller 230, which can clean the surface of the impeller 230. At the same time, the impeller 230 is tilted towards the oil cup 1, so that the wastewater generated during the cleaning process can fall into the oil cup 1 for collection, without the need for additional structural components for collecting wastewater.

[0041] It should be noted that when the range hood in this embodiment operates the cleaning function, the impeller 230 needs to be driven by the motor 220 to rotate at a low speed so that the nano bubble water can quickly cover all the blades 231 and the surface of the chassis 232 of the impeller 230, and quickly complete the cleaning of the impeller 230.

[0042] In a preferred embodiment, the nano-bubble water generator 300 includes a liquid storage box 310, a water pump 320, an electrolysis device 330, and a nozzle 340. The liquid storage box 310 and the water pump 320 are fixed to the housing 100. The water pump 320, the electrolysis device 330, and the nozzle 340 are connected to form a water flow path, drawing water from the liquid storage box 310, electrolyzing it through the electrolysis device 330, and then spraying it out from the nozzle 340. The nano-bubble water generator 300 in this embodiment has a simple structure, which is beneficial for its widespread application in range hoods.

[0043] In a further preferred embodiment, such as Figure 4 and Figure 6 As shown, the housing 100 includes a top plate 110, a back plate 120 and a side plate 130. The top plate 110, the back plate 120 and the side plate 130 enclose a receiving cavity 140, in which the volute exhaust assembly 200 and the nano bubble water generator 300 are both housed.

[0044] The liquid storage box 310 is located on the lower side of the top plate 110, and the water pump 320 is fixed inside the back plate 120. The water pump 320 is located below the liquid storage box 310 and is connected to the liquid storage box 310 from the bottom. In this embodiment, the gravity of water can be used to promote smooth water flow in the water flow path, while saving power for the water pump 320. Specifically, the liquid storage box 310 can be provided with a water inlet that penetrates the top plate 110, or the liquid storage box 310 can be set as an embedded structure embedded in the top plate 110 to facilitate users to add water.

[0045] In another preferred embodiment, such as Figure 2 and Figure 3 As shown, the liquid storage box 310, water pump 320, electrolysis device 330 and nozzle 340 are connected in sequence. The electrolysis device 330 is located on one side of the volute 210. The nozzle 340 is a bent pipe. The first end of the nozzle 340 is connected to the electrolysis device 330. The first end of the nozzle 340 extends from one side of the volute 210 toward the cavity of the impeller 230 and then bends toward the chassis 232 of the impeller 230. It continues to extend along the extension direction of the blades 231 of the impeller 230, so that the second end of the nozzle 340 extends toward the chassis 232 of the impeller 230. The bent pipe wall is provided with spray holes 2 that spray toward the blades 231 of the impeller 230.

[0046] In this embodiment, the port at the second end of the nozzle 340 faces the base 232 of the impeller 230. This port can spray nano-bubble water onto the surface of the impeller 230 base 232 to clean it. Simultaneously, due to the inclined placement of the volute 210, the nano-bubble water sprayed onto the base 232 tends to flow and diffuse downwards under gravity, promoting the cleaning of the blades 231. In addition, a spray hole 2 is provided to spray nano-bubble water onto the blades 231 of the impeller 230, achieving cleaning of the blades 231. The nano-bubble water generating device 300 in this embodiment not only has a simple structure but also effectively utilizes the space within the range hood housing 100, without increasing the size of the range hood or affecting its appearance. Specifically, the bent pipe is preferably made of stainless steel.

[0047] Further preferred, such as Figure 3 As shown, the distance between the first end of the nozzle 340 and the horizontal plane is greater than the distance between the second end of the nozzle 340 and the horizontal plane. This allows the nozzle 340 to tilt as a whole towards the impeller 230 base 232. During the cleaning process, the water droplets flowing from the second end of the nozzle 340 and the spray hole 2 can flow down to the side of the impeller 230 base 232, preventing the water droplets from splashing onto the stove or other surfaces after falling down the nozzle 340 pipe wall, thus avoiding a poor user experience.

[0048] Further preferred, such as Figure 4 As shown, the nozzle 340 includes a first pipe section 341 and a second pipe section 342. One end of the first pipe section 341 and the second pipe section 342 are connected to form a bend. The first pipe section 341 is placed radially along the impeller 230, and the second pipe section 342 is placed axially along the impeller 230. The other end of the first pipe section 341 is connected to the electrolysis device 330, and the other end of the second pipe section 342 extends toward the base 232 of the impeller 230. A spray hole 2 is provided on the pipe wall of the second pipe section 342, and the spray hole 2 faces the blade 231 of the impeller 230.

[0049] More preferably, since the nozzle 2 is located in front of the water flow path relative to the second end of the nozzle 340, in order to ensure the water jet pressure at the second end of the nozzle 340, the diameter of the nozzle 2 is 1 / 3 to 1 / 4 of the inner diameter of the nozzle 340. This can ensure the water jet pressure and water volume at the second end of the nozzle 340. For example, when the inner diameter of the nozzle 340 is 5mm, the diameter of the nozzle 2 can be set to 1mm to 2mm.

[0050] In another preferred embodiment, such as Figure 5As shown, the electrolysis device 330 includes an electrolysis box 331, a first electrode 332 and a second electrode 333. One end of the first electrode 332 and the second electrode 333 are used to connect to electricity, and the other end is inserted into the electrolysis box 331 to electrolyze the water flowing through the electrolysis box 331. The electrolysis box 331 is provided with an inlet 3 and an outlet 4. The inlet 3 is connected to the storage box 310, and the outlet 4 is connected to the nozzle 340.

[0051] When the range hood starts its cleaning function, the water pump 320 starts working and draws liquid from the liquid storage box 310. After the first electrode 332 and the second electrode 333 are energized, hydrogen and oxygen are continuously generated near the electrodes. Since the water in the electrolysis box 331 is constantly flowing, the generated hydrogen and oxygen will be carried away by the subsequent water flow, so the bubbles will not become larger after continuous electrolysis. The water mixed with nano-sized bubbles forms nano-bubble water.

[0052] In a further preferred embodiment, the impeller 230 surface is coated with a hydrophilic and oleophobic coating 6, which promotes the rapid spread of nanobubble water on the impeller 230 surface, uniformly covering the entire blade 231 and chassis 232. Figure 6 As shown, due to the microscopic unevenness of the coating surface, the nano-bubble water covers the coating surface and fills the gaps between the oil and the coating. The bubbles continuously burst, effectively removing the oil and achieving excellent cleaning and decontamination results. Simultaneously, benefiting from the easy spreadability of the water film on the hydrophilic and oleophobic coating, the nozzle 340 does not need to spray the liquid in a large mist to ensure that the nano-bubble water reaches all surfaces of the impeller 230. Instead, the nozzle orifice 2 can be appropriately enlarged, avoiding the problem of easy clogging and improving the reliability of the cleaning device.

[0053] Specifically, the main components of the hydrophilic and oleophobic coating 6 are inorganic silicates (sodium silicate, potassium silicate, lithium silicate), with a coating thickness of 2 to 6 micrometers and a hydrophilic angle of <10°.

[0054] It should be noted that during the cleaning process, the nano-bubble water can quickly and evenly cover all blades 231 of the impeller 230 when the impeller 230 rotates at a low speed. During the rotation of the impeller 230, the bursting speed of the bubbles can also be accelerated, shortening the cleaning time. If the impeller 230 is rotated at a low speed of 50 to 100 r / min for 5 to 10 minutes, the impeller 230 can then be rotated at a high speed (800 to 1200 r / min) for about 1 minute to remove the residual water and oil from the impeller 230, thereby completing the cleaning process.

[0055] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0056] In the description of this specification, the references to terms such as "preferred embodiment," "another embodiment," "other embodiment," or "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A range hood, comprising a housing and a volute exhaust assembly disposed within the housing, the housing having an exhaust port, the volute exhaust assembly comprising a volute, a motor, and an impeller, the motor being driven to the impeller, the exhaust port of the volute communicating with the exhaust port, and an oil cup disposed at the bottom of the housing, characterized in that: The central axis of the impeller is inclined toward the oil cup, and the bottom end of the impeller is located directly above the oil cup; The housing is also equipped with a nano bubble water generator, which is used to generate nano bubble water and spray it onto the impeller surface.

2. The range hood according to claim 1, characterized in that: The nanobubble water generator includes a storage box, a water pump, an electrolysis device, and a nozzle. The storage box and the water pump are fixed to the housing. The water pump, the electrolysis device, and the nozzle are connected to form a water flow path, which draws water from the storage box, electrolyzes it through the electrolysis device, and then sprays it out from the nozzle.

3. The range hood according to claim 2, characterized in that: The housing includes a top plate, a back plate, and a side plate, which together form a receiving cavity. The volute exhaust assembly and the nano bubble water generator are both housed within the receiving cavity. The liquid storage box is located on the lower side of the top plate, the water pump is fixed to the inner side of the back plate, the water pump is located below the liquid storage box, and the water pump is connected to the liquid storage box from the bottom.

4. A range hood according to claim 2, characterized in that: The liquid storage box, water pump, electrolysis device and nozzle are connected in sequence, and the electrolysis device is located on one side of the volute. The nozzle is a bent pipe. The first end of the nozzle is connected to the electrolysis device. The first end of the nozzle extends from one side of the volute towards the impeller cavity and then bends towards the impeller chassis. It continues to extend along the extension direction of the impeller blades, so that the second end of the nozzle extends towards the impeller chassis. The bent pipe wall is provided with spray holes that spray towards the impeller blades.

5. A range hood according to claim 4, characterized in that: The distance between the first end of the nozzle and the horizontal plane is greater than the distance between the second end of the nozzle and the horizontal plane.

6. A range hood according to claim 4, characterized in that: The nozzle includes a first pipe section and a second pipe section. One end of the first pipe section and the second pipe section are connected to form the bend. The first pipe section is placed radially along the impeller, and the second pipe section is placed axially along the impeller. The other end of the first pipe section is connected to the electrolysis device, and the other end of the second pipe section extends toward the base of the impeller. The second pipe section has the spray holes on its pipe wall, and the spray holes face the blades of the impeller.

7. A range hood according to claim 6, characterized in that: The diameter of the nozzle is 1 / 3 to 1 / 4 of the inner diameter of the nozzle.

8. A range hood according to claim 2, characterized in that: The electrolysis device includes an electrolysis box, a first electrode, and a second electrode. One end of the first electrode and the second electrode are used to connect to electricity, and the other end is inserted into the electrolysis box. The electrolysis box is provided with an inlet and an outlet. The inlet is connected to the liquid storage box, and the outlet is connected to the nozzle.

9. A range hood according to any one of claims 1 to 8, characterized in that: The impeller surface is coated with a hydrophilic and oleophobic coating.

10. A range hood according to claim 9, characterized in that: The thickness of the hydrophilic and oleophobic coating is 2 to 6 micrometers; And / or, the hydrophilic angle of the hydrophilic-oleophobic coating is less than 10°.

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