Range hood supercharging device and range hood

Abstract

The utility model belongs to the technical field of range hoods, and particularly relates to a range hood supercharging device and a range hood. The range hood supercharging device is used for being installed between the oil smoke outlet and the smoke exhaust pipe of the range hood body, the problem that the oil smoke exhaust resistance of the range hood is large can be effectively solved, and therefore the oil smoke exhaust capacity of the range hood is improved, and the effect is especially obvious for users with the large oil smoke exhaust resistance on the bottom layer or the high layer. In addition, the impeller is arranged on the periphery of the axial flow divider, so that the axial flow divider can prevent vortex from being formed in the shell, airflow discharge is smoother, it is guaranteed that the exhaust air rate of the range hood supercharging device is large, enough pressure is provided, and it is guaranteed that the fan device meets the performance index that the fan device is connected with the range hood in series.

Description

Technical Field

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

[0002] Because range hoods typically need to pass through long shared flues to expel cooking fumes into the atmosphere, they must overcome significant resistance in these flues. While current range hoods are designed with standardized performance, the performance requirements of different floors vary. In most Chinese cities, shared flues are used for fume extraction, so a range hood with only one performance characteristic cannot meet the needs of different floors simultaneously. This is especially true for lower-floor users in high-rise buildings with shared flues, where the high resistance makes it difficult to expel cooking fumes. Utility Model Content

[0003] The purpose of this utility model is to overcome the problem that existing range hoods using shared flues have high resistance to smoke exhaust, making it difficult to remove smoke, and to provide a range hood booster device and range hood that assists in smoke exhaust.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A range hood booster device is used to connect to the fume outlet of the range hood body, including a housing and a fan unit; the housing has an air outlet and an air inlet at both ends; the fan unit is installed inside the housing and includes a drive motor, an axial splitter, and an impeller disposed on the outer periphery of the axial splitter. The axial splitter has an axially arranged cavity and a clearance structure located on the side. The drive motor is installed in the cavity and connected to the housing through the clearance structure. The motor shaft of the drive motor is drivenly connected to the axial splitter.

[0006] Compared with existing technologies, the range hood booster device of this invention, installed between the fume outlet and the exhaust pipe of the range hood, effectively overcomes the problem of high fume exhaust resistance, thereby improving the range hood's fume extraction capacity. This is particularly effective for users on lower or higher floors who experience high fume exhaust resistance. Furthermore, arranging the impeller on the outer periphery of the axial distributor prevents the formation of vortices within the casing, allowing for smoother airflow and ensuring a large exhaust volume and sufficient pressure from the booster device to meet the performance specifications required for connection with the range hood.

[0007] Furthermore, the impeller is provided with multiple impellers along the axial direction, and the blades of adjacent impellers are staggered relative to each other; with this arrangement, the multiple impellers are staggered in sequence, increasing the airflow capture area, greatly improving the wind pressure of the exhaust fumes, and preventing backflow of fumes.

[0008] Furthermore, the impeller has three blades along the axial direction; the impeller has three blades equidistantly arranged along the circumference; the blades between adjacent impellers are staggered by 40°, and the blades between intervening impellers are staggered; with this arrangement, the three layers of blades are staggered in sequence, increasing the airflow capture area, so that the wind pressure will increase sequentially through the three layers of blades after the oil fumes enter the pressurization device, greatly increasing the wind pressure of the discharged oil fumes and preventing backflow of oil fumes.

[0009] Furthermore, the motor shafts on both sides of the drive motor extend in opposite directions and are connected to the axial splitter for transmission. The motor shafts pass through the axial splitter and extend out of the mounting cavity. The position where the motor shafts pass through the axial splitter forms a fixed connection with the axial splitter. The housing is provided with brackets at the air outlet and air inlet positions. The ends of the motor shafts on both sides of the drive motor are respectively connected to the corresponding brackets through bearings for rotational connection. With this arrangement, the fan device is effectively fixed in the housing, which is simple to fix and convenient for product manufacturing.

[0010] Furthermore, the axial splitter has guide sections at both ends, and the guide sections are conical in shape; the guide section has a clearance hole in the middle that connects to the mounting cavity, and the motor shaft extends out of the mounting cavity through the clearance hole, which is located at the end of the guide section; the clearance hole is fixedly connected to the motor shaft, and the clearance hole and the motor shaft are sealed together; with this arrangement, the guide section can separate the oil fumes flowing into the booster device, preventing the oil fumes from forming eddies in the middle of the booster device, and making the airflow discharge smoother.

[0011] Furthermore, the inner peripheral wall of the shell cavity of the shell is provided with a sound insulation structure; the sound insulation structure includes a number of sound insulation grooves arranged vertically and circumferentially on the inner peripheral wall of the shell cavity; with this arrangement, the sound insulation grooves form a kind of small cyclone chamber on the inner wall of the shell cavity of the shell, so that the oil fume is kept in the sound insulation groove during the emission process, and the noise is isolated from the outward transmission.

[0012] Furthermore, the inner circumferential wall of the shell cavity of the shell is provided with several vertically arranged guide channels, and each guide channel is connected to several vertically arranged sound insulation channels; there are guide channels in the vertical direction to collect the oil and water discharged from the sound insulation channels, so that the oil and water separated by centrifugal force can flow back to the oil cup of the range hood along the guide channels.

[0013] Furthermore, the inner peripheral wall of the shell cavity of the shell is provided with a plurality of horizontally arranged sound-insulating protrusions along the vertical and circumferential directions respectively. The sound-insulating groove is formed between the vertically adjacent sound-insulating protrusions, and the airflow guide groove is formed between the circumferentially adjacent sound-insulating protrusions. With this arrangement, the sound-insulating groove of the sound insulation structure is formed by the space between a plurality of sound-insulating protrusions. The sound-insulating groove is simple to set. In addition, by setting the sound-insulating protrusions on the inner peripheral wall of the shell cavity, the friction between the airflow and the inner wall of the shell cavity can be reduced, thereby achieving the effect of noise reduction.

[0014] Another objective of this invention is to provide a range hood utilizing the aforementioned booster device, comprising a range hood body, an exhaust pipe, and the booster device. The air inlet of the casing is connected to the fume outlet of the range hood body, and the air outlet of the casing is connected to the exhaust pipe. With this configuration, the booster device is installed between the fume outlet of the range hood body and the exhaust pipe, effectively overcoming the problem of high fume exhaust resistance in range hoods, thereby improving the fume extraction capacity of the range hood. This is particularly effective for users on lower or higher floors who experience high fume exhaust resistance. Furthermore, arranging the impeller on the outer periphery of the axial distributor prevents the formation of vortices within the casing, allowing for smoother airflow and ensuring a large exhaust volume from the booster device. It also provides sufficient pressure to guarantee that the fan device meets the performance specifications required for connection with the range hood. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a range hood.

[0016] Figure 2 This is a schematic diagram of the booster device for a range hood.

[0017] Figure 3 This is a cross-sectional view of the booster device for a range hood.

[0018] Figure 4 This is a schematic diagram of the bottom of the booster device for a range hood.

[0019] Figure 5 This is a schematic diagram of the first or second housing.

[0020] Figure 6 This is a front view of the fan unit.

[0021] Figure 7 This is a schematic diagram of a fan unit.

[0022] Figure 8 This is a top view of the fan unit.

[0023] Figure 9 This is a diagram showing the internal structure of the booster device in a range hood.

[0024] Labeling: 4. Range hood body, 41. Fume outlet, 1. Boosting device, 2. Housing, 3. Fan device, 31. Drive motor, 32. Axial distributor, 33. Impeller, 34. Housing cavity, 35. Clearance structure, 36. Bracket, 331. Air outlet, 21. Air inlet, 22. Motor shaft, 37. Guide section, 321. Clearance hole, 322. Cylinder, 38. Sound insulation structure, 23. Sound insulation groove, 231. Guide groove, 232. Sound insulation protrusion, 233. First housing, 201. Second housing, 202. First connecting edge, 203. Second connecting edge, 204. Connecting hole, 205. Exhaust pipe, 42. Housing cavity, 20. Connecting part, 361. Support arm, 362. Narrowing part, 29. Air outlet, 291. Connecting frame, 39. Ventilation hole, 391. Detailed Implementation

[0025] The specific embodiments of this utility model are described below with reference to the accompanying drawings. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0026] Example 1:

[0027] See Figures 1 to 9 The present invention relates to a range hood booster device 1, which is used to connect to the fume outlet 41 of the range hood body 4. The device includes a housing 2 and a fan 3. The housing 2 has an air outlet 21 and an air inlet 22 located at both ends. The fan 3, housed within the housing 2, includes a drive motor 31, an axial distributor 32, and an impeller 33 disposed on the outer periphery of the axial distributor 32. The axial distributor 32 has an axially arranged cavity 34 and a side clearance structure 35. The drive motor 31 is housed within the cavity 34 and connected to the housing 2 via the clearance structure 35. The motor shaft 37 of the drive motor 31 is drively connected to the axial distributor 32. The drive motor 31 is a conventional dual-output shaft motor.

[0028] Compared with existing technologies, the range hood booster device 1 of this utility model, installed between the fume outlet 41 and the exhaust pipe 42 of the range hood body 4, can effectively overcome the problem of high fume exhaust resistance in range hoods, thereby improving the fume exhaust capacity of the range hood. This is particularly effective for users on lower or higher floors who experience high fume exhaust resistance. Furthermore, arranging the impeller 33 on the outer periphery of the axial distributor 32 prevents the formation of vortices within the housing 2, allowing for smoother airflow and ensuring a large exhaust volume from the booster device 1. It also provides sufficient pressure to ensure that the fan device 3 meets the performance specifications required for connection with the range hood.

[0029] See Figures 2 to 9 In one embodiment, the avoidance structure 35 is an avoidance port arranged circumferentially on the side of the axial splitter 32. The cylinder 38 of the drive motor 31 extends out of the avoidance port through the connecting frame 39 and is fixedly connected to the housing 2. The connecting frame 39 is provided with a plurality of ventilation holes 391 along the circumferential direction. The avoidance port makes the axial splitter 32 form two split structures. With this arrangement, the avoidance structure 35 is simple to set and convenient for the production and manufacturing of the axial splitter 32.

[0030] See Figures 2 to 8 In one embodiment, multiple impellers 33 are provided along the axial direction, and the blades 331 of adjacent impellers 33 are staggered relative to each other. With this arrangement, the multiple impellers 33 are staggered in sequence, which increases the airflow capture area, greatly improves the wind pressure of the exhaust fumes, and avoids backflow of fumes.

[0031] See Figures 3 to 8 In one embodiment, the impeller 33 is provided with three blades along the axial direction; the impeller 33 is provided with three blades 331 equidistantly arranged in the circumferential direction; furthermore, the blades 331 between adjacent impellers 33 are staggered by 40°, and the blades 331 between intermittent impellers 33 are staggered; with this arrangement, the three layers of blades 331 are staggered in sequence, increasing the airflow capture area, so that the wind pressure will increase sequentially through the three layers of blades 331 after the oil fumes enter the pressurization device 1, greatly increasing the wind pressure of the discharged oil fumes and preventing backflow of oil fumes.

[0032] See Figures 3 to 8 In one embodiment, the motor shafts 37 on both sides of the drive motor 31 extend in opposite directions and are connected to the axial diverter 32. The motor shafts 37 extend through the axial diverter 32 and out of the outer side of the mounting cavity 34. The position where the motor shafts 37 pass through the axial diverter 32 is fixedly connected to the axial diverter 32. The housing 2 is provided with brackets 36 at the air outlet 21 and air inlet 22. The ends of the motor shafts 37 on both sides of the drive motor 31 are rotatably connected to the corresponding brackets 36 through bearings. With this arrangement, the fan device 3 is effectively fixed in the housing 2. The fixing is simple and convenient for product manufacturing.

[0033] See Figures 2 to 8In one embodiment, the axial splitter 32 extends along its length, and guide portions 321 are formed at both ends of the axial splitter 32. The guide portions 321 are conical in shape. A clearance hole 322 communicating with the mounting cavity 34 is provided in the middle of the guide portion 321. The motor shaft 37 extends out of the mounting cavity 34 through the clearance hole 322. The clearance hole 322 is located at the end of the guide portion 321. The clearance hole 322 is fixedly connected to the motor shaft 37, and the clearance hole 322 and the motor shaft 37 are sealed together. With this arrangement, the guide portion 321 can separate the oil fumes flowing into the pressurizing device 1, avoid the formation of eddies in the middle of the pressurizing device 1, and make the airflow discharge smoother.

[0034] See Figures 2 to 7 In one embodiment, the inner peripheral wall of the cavity 20 of the housing 2 is provided with a sound insulation structure 23; the sound insulation structure 23 includes a plurality of sound insulation grooves 231 arranged vertically and circumferentially on the inner peripheral wall of the cavity 20; with this arrangement, the sound insulation grooves 231 form a kind of small cyclone chamber on the inner wall of the cavity 20 of the housing 2, so that the oil fume is kept in the sound insulation grooves 231 during the emission process, and the noise is isolated from the outward transmission, effectively reducing noise interference and achieving good performance.

[0035] See Figures 3 to 7 In one embodiment, the inner peripheral wall of the cavity 20 of the housing 2 is provided with a plurality of vertically arranged guide grooves 232 along the circumferential direction, and each guide groove 232 is connected to a plurality of vertically arranged sound insulation grooves 231; a series of guide grooves 232 are provided in the vertical direction to collect oil and water discharged from the sound insulation grooves 231, so that the oil and water separated by centrifugal force can flow back to the oil cup of the range hood along the guide grooves 232.

[0036] See Figures 3 to 7 In one embodiment, the inner peripheral wall of the cavity 20 of the housing 2 is provided with a plurality of horizontally arranged sound-insulating protrusions 233 along the vertical and circumferential directions, respectively. The sound-insulating grooves 231 are formed between the vertically adjacent sound-insulating protrusions 233, and the flow guide grooves 232 are formed between the circumferentially adjacent sound-insulating protrusions 233. The sound-insulating protrusions 233 are rectangular or square. With this arrangement, the sound-insulating grooves 231 of the sound insulation structure 23 are formed by the space between the plurality of sound-insulating protrusions 233. The arrangement of the sound-insulating grooves 231 is simple. In addition, by providing sound-insulating protrusions 233 on the inner peripheral wall of the cavity 20 of the housing 2, the friction between the airflow and the inner wall of the cavity 20 can be reduced, thereby achieving the effect of noise reduction.

[0037] See Figures 3 to 7In one embodiment, the housing 2 includes a first housing 201 and a second housing 202 that are assembled relative to each other. The first housing 201 and the second housing 202 are symmetrical in the vertical direction. The lower end of the first housing 201 is provided with a first connecting edge 203 on the outer periphery of the splicing interface, and the upper end of the second housing 2 is provided with a second connecting edge 202 on the outer periphery of the splicing interface. The first connecting edge 203 and the second connecting edge 204 are respectively provided with connecting holes 205. The connecting holes 205 of the first connecting edge 203 and the connecting holes 205 of the second connecting edge 204 are connected by screws, so that the first housing 201 and the second housing 202 are assembled into one piece. This arrangement facilitates the molding of the housing 2, as well as the installation of the range hood pressurization device 1 and the cleaning of the internal oil.

[0038] See Figures 3 to 7 In one embodiment, the bracket 36 includes a connecting portion 361 and three support arms 362 that are connected around the outer periphery of the connecting portion 361. The motor shaft 37 is connected to the connecting portion 361, and the outer ends of the support arms 362 are connected to the inner wall of the cavity 20.

[0039] See Figures 3 to 7 In one embodiment, the upper and lower sides of the housing 2 are respectively provided with narrowing portions 29 whose outer diameter gradually narrows. The outer end of the narrowing portion 29 is provided with an air vent 291. The air outlet 21 and the air inlet 22 are respectively arranged in the corresponding air vent 291. With this arrangement, the suction pressure of the air inlet 22 is effectively improved, thereby improving the range hood's ability to exhaust oil fumes. It also effectively improves the overall structural strength of the housing 2. At the same time, it allows the size of the air inlet 22 to match the oil fume outlet 41 of the range hood, and the size of the air outlet 21 to match the exhaust pipe 42.

[0040] Example 2:

[0041] See Figures 1 to 7 Another objective of this utility model is to provide a range hood using the aforementioned range hood booster device 1, comprising a range hood body 4, an exhaust pipe 42, and the range hood booster device 1. The air inlet 22 of the housing 2 is connected to the fume outlet 41 of the range hood body 4, and the air outlet 21 of the housing 2 is connected to the exhaust pipe 42. With this arrangement, the range hood booster device 1 is installed between the fume outlet 41 of the range hood body 4 and the exhaust pipe 42, effectively overcoming the problem of high fume exhaust resistance in range hoods, thereby improving the fume exhaust capacity of the range hood. This is particularly effective for users on lower or higher floors who experience high fume exhaust resistance. Furthermore, arranging the impeller 33 on the outer periphery of the axial distributor 32 prevents the formation of vortices within the housing 2, allowing for smoother airflow and ensuring a large exhaust volume from the range hood booster device 1. It also provides sufficient pressure to ensure that the fan device 3 meets the performance specifications for connection with the range hood.

[0042] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A range hood booster device, used to connect to the fume outlet of the range hood body, characterized in that, include: The housing has an air outlet and an air inlet located at both ends; The fan unit, housed within a casing, includes a drive motor, an axial splitter, and an impeller disposed on the outer periphery of the axial splitter. The axial splitter has an axially arranged mounting cavity and a clearance structure located on the side. The drive motor is housed within the mounting cavity and connected to the casing via the clearance structure. The motor shaft of the drive motor is drively connected to the axial splitter.

2. The range hood booster device according to claim 1, characterized in that, The impeller has multiple blades arranged in the axial direction, with the blades of adjacent impellers staggered relative to each other.

3. The range hood booster device according to claim 1, characterized in that, The impeller has three impellers along the axial direction.

4. The range hood booster device according to claim 2 or 3, characterized in that, The impeller has three blades arranged equidistantly along its circumference.

5. The range hood booster device according to claim 4, characterized in that, The blades of adjacent impellers are staggered by 40°, and the blades of impellers separated by a certain distance are staggered.

6. The range hood booster device according to claim 1, characterized in that, The motor shafts on both sides of the drive motor extend in opposite directions and are connected to the axial splitter. The motor shafts pass through the axial splitter and extend out of the mounting cavity. The position where the motor shaft passes through the axial splitter forms a fixed connection with the axial splitter. The housing is provided with brackets at the air outlet and air inlet positions. The ends of the motor shafts on both sides of the drive motor are rotatably connected to the corresponding brackets through bearings.

7. The range hood booster device according to claim 1 or 6, characterized in that, The axial splitter has guide sections at both ends, and the guide sections are conical in shape. The flow guide section has a clearance hole in the middle that connects to the mounting cavity. The motor shaft extends out of the mounting cavity through the clearance hole, which is located at the end of the flow guide section. The clearance hole is fixedly connected to the motor shaft and is sealed to the motor shaft.

8. The range hood booster device according to claim 1, characterized in that, The inner peripheral wall of the shell cavity of the shell is provided with a sound insulation structure; The sound insulation structure includes several sound insulation grooves arranged vertically and circumferentially on the inner wall of the shell cavity.

9. The range hood booster device according to claim 8, characterized in that, The inner circumferential wall of the shell cavity of the shell is provided with a plurality of vertically arranged guide grooves, and each of the guide grooves is connected to a plurality of vertically arranged sound insulation grooves. The inner circumferential wall of the shell cavity is provided with a number of horizontally arranged sound-insulating protrusions along the vertical and circumferential directions respectively. The sound-insulating groove is formed between the vertically adjacent sound-insulating protrusions, and the flow-guiding groove is formed between the circumferentially adjacent sound-insulating protrusions.

10. A range hood, characterized in that, The range hood includes a range hood body, an exhaust pipe, and a range hood booster device as described in any one of claims 1 to 9, wherein the air inlet of the housing is connected to the fume outlet of the range hood body, and the air outlet of the housing is connected to the exhaust pipe.

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