Large-air-volume low-noise range hood

Abstract

The utility model provides a range hood with large air volume and low noise, which comprises a box body, a fan and an air duct cylinder, a silencing plate is paved on the inner wall surface of the box body, the fan is arranged at the top of the box body, the fan comprises a coaxial reverse motor, the coaxial reverse motor is connected with two stages of fan blades, the rotating directions and tangential angles of the two stages of fan blades are opposite, and the fan blades are arranged in the box body. And the air duct barrel is arranged outside the fan in a sleeving manner. The large-air-volume low-noise range hood provided by the utility model has the advantages of low noise, large and uniform air pressure and high smoke exhaust efficiency.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, specifically to a high-volume, low-noise range hood. Background Technology

[0002] A range hood is a kitchen appliance used to purify the kitchen environment. Installed above the stove, it quickly removes waste from combustion and harmful fumes produced during cooking, venting them outdoors to reduce pollution, purify the air, and provide safety features such as protection against poisoning and explosions. However, while the range hood removes fumes, it also generates considerable noise, which can cause discomfort and pose health risks with prolonged use. Currently, most range hoods lack effective noise reduction, and their fans often employ a single-stage rotation mechanism, resulting in uneven air pressure and low smoke extraction efficiency. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, this utility model provides a high-volume, low-noise smoke hood with the advantages of low noise, high and uniform air pressure, and high smoke extraction efficiency.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A high-volume, low-noise range hood includes a housing, a fan, and a duct. The inner wall of the housing is covered with a sound-absorbing plate. The fan is located on the top of the housing and includes a coaxial reversible motor connected to two stages of fan blades. The two stages of fan blades rotate in opposite directions and have opposite tangential angles. The duct is fitted over the fan.

[0006] Furthermore, the enclosure includes a front box and a rear box that are interlocked.

[0007] Furthermore, the front box consists of a front box panel, a front box back panel, and two front box side panels, with sound-absorbing panels embedded in the front box back panel and the front box side panels.

[0008] Furthermore, the rear box is composed of a rear box frame plate, a rear box grille plate, an L-shaped rear box back plate and a rear box top plate. The side walls and top walls of the rear box back plate are provided with sound-absorbing plates, the top wall of the rear box back plate is provided with an air inlet, and a sound-absorbing plate is provided below the air inlet.

[0009] Furthermore, the rear box grille and the rear box top plate are provided with multiple damping and noise reduction holes.

[0010] Furthermore, a smoke collector is connected above the air inlet, the smoke collector has a smoke collection port, the smoke collection chamber wall has multiple silencer holes, the top of the smoke collector has an oil collection groove and an oil guide groove, the oil guide groove is connected to the oil collection groove, the oil guide groove has an oil drain hole, the fan is connected to the smoke collector, and the oil guide groove receives the oil dripping from the fan.

[0011] Furthermore, the coaxial reversing motor includes a reverse motor and a forward motor connected in series. The reverse motor has a hollow shaft, and the forward motor has a solid shaft. The hollow shaft is sleeved on the solid shaft, and the hollow shaft and the solid shaft are connected to a first-stage fan blade.

[0012] Furthermore, the fan also includes a fan housing, a motor mounting cavity is provided inside the fan housing, a wire through groove is provided on the outer wall of the fan housing, and a wire through hole is provided in the motor mounting cavity.

[0013] Furthermore, the fan housing includes a base, a cylindrical tube, and a conical tube connected from bottom to top.

[0014] Furthermore, the duct body is provided with sound-absorbing tiles that fit against its inner wall, the top of the duct body is provided with a smoke exhaust port, and the smoke exhaust port is provided with a check valve.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects:

[0016] This utility model of a high-volume, low-noise smoke hood features a sound-absorbing plate on the inner wall of the housing, which can absorb noise during operation to the greatest extent. The fan uses a coaxial reversing motor connected to two-stage fan blades, which can effectively increase the air pressure and maintain uniform air pressure, thereby improving smoke exhaust efficiency. Attached Figure Description

[0017] Figure 1 This is a structural diagram of a high-volume, low-noise range hood according to this utility model.

[0018] Figure 2 This is a schematic diagram of the opening and closing process of a high-volume, low-noise range hood according to this utility model.

[0019] Figure 3 This is an exploded view of a high-volume, low-noise range hood according to this utility model.

[0020] Figure 4 This is an exploded view of the front box of this utility model.

[0021] Figure 5 This is an exploded view of the rear compartment of this utility model.

[0022] Figure 6 This is a three-dimensional cross-sectional view of the smoke collector of this utility model.

[0023] Figure 7 This is an exploded view of the wind turbine of this utility model.

[0024] Figure 8 This is a cross-sectional view of the fan casing of this utility model.

[0025] Figure 9 This is a structural diagram of the coaxial reversing motor of this utility model.

[0026] Figure 10 This is an exploded view of the air duct body of this utility model.

[0027] The components include: 1. Front box; 11. Front box panel; 12. Front box back panel; 13. Front box side panel; 2. Rear box; 21. Rear box frame panel; 22. Rear box grille; 23. Rear box back panel; 24. Rear box top panel; 25. Electronic controller mounting plate; 26. Controller; 27. Smoke collector; 271. Silencer hole; 272. Oil collection trough; 273. Oil guide trough; 274. Oil drain hole; 275. Oil guide pipe; 3. Fan; 3 1. Fan housing; 311. Base; 312. Cylindrical tube; 313. Conical tube; 314. Motor mounting cavity; 315. Wiring groove; 316. Wiring hole; 32. Coaxial reverse motor; 321. Reverse motor; 322. Forward motor; 323. Hollow shaft; 324. Solid shaft; 33. Fan blade; 4. Air duct body; 41. Sound-absorbing tile; 42. Check valve; 5. Oil receiving box; 6. Sound-absorbing plate. Detailed Implementation

[0028] Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Example 1

[0030] refer to Figure 1-4 A high-volume, low-noise range hood includes a housing consisting of a front housing 1 and a rear housing 2, a fan 3, and an air duct 4. The front housing 1 and the rear housing 2 are interlocked for easy maintenance. An oil collection box 5 is connected to the bottom of the front housing 1. The front housing 1 consists of an L-shaped front panel 11, an L-shaped front back panel 12, and two L-shaped front side panels 13. Sound-absorbing plates 6 are embedded in the front back panel 12 and the front side panels 13. The front panel 11 has a smoke vent, a lighting window, and a controller window. The front back panel 12 has filter fixing holes, lighting fixing holes, and controller fixing holes.

[0031] refer to Figure 5The rear box 2 consists of a rear box frame plate 21, a rear box grille 22, an L-shaped rear box back plate 23, and a rear box top plate 24. The side and top walls of the rear box back plate 23 are equipped with sound-absorbing panels 6, and the top wall of the rear box back plate 23 has an air inlet, with a sound-absorbing panel 6 located below the air inlet. The rear box grille 22 and the rear box top plate 24 have multiple damping sound-absorbing holes to reduce wind noise. An electronic controller mounting plate 25 is also located inside the rear box 2, and the electronic controller mounting plate 25 has multiple damping sound-absorbing holes. A controller 26 is installed on the rear box top plate 24.

[0032] refer to Figure 6 A smoke collector 27 is connected above the air inlet, and the smoke collector 27 has a smoke collection port. The cavity wall of the smoke collection port has multiple silencer holes 271. The top of the smoke collector 27 has an annular oil collection groove 272 and an oil guide groove 273. The oil guide groove 273 is connected to the oil collection groove 272. The oil guide groove 273 has an oil drain hole 274, which is connected to the oil collection box 5 through an oil guide pipe 275 to collect oil. The fan 3 is located on the top of the box and connected to the smoke collector 27. The oil guide groove 273 collects the oil dripping from the fan 3.

[0033] Based on the above structure, the front, rear, left, right and top sides of the housing are equipped with sound-absorbing plates 6, which can reduce noise from five directions. Combined with the design of sound-absorbing holes, the noise of the range hood during operation is greatly reduced.

[0034] refer to Figure 7-9 The fan 3 includes a fan housing 31 and a coaxial reversing motor 32. The fan housing 31 includes a base 311, a cylindrical tube 312, and a conical tube 313 connected from bottom to top. A motor fixing cavity 314 is provided inside the fan housing 31, and the coaxial reversing motor 32 is fixedly connected inside the motor fixing cavity 314. A wire through groove 315 is provided on the outer wall of the fan housing 31, and a wire through hole 316 is provided in the motor fixing cavity 314.

[0035] The coaxial reversible motor 32 includes a reverse motor 321 and a forward motor 322 connected in series. The reverse motor 321 has a hollow shaft 323, and the forward motor 322 has a solid shaft 324. The hollow shaft 323 is fitted over the solid shaft 324, and each of the hollow shaft 323 and the solid shaft 324 is connected to a first-stage fan blade 33. The rotation directions and tangential angles of the two stages of fan blades are opposite. Based on the above structure, the fan can achieve the technical effects of multi-stage rotation, low noise, and high and uniform air pressure.

[0036] refer to Figure 10 The duct body 4 is installed outside the fan 3. The duct body 4 is fitted with sound-absorbing tiles 41 that fit against its inner wall. The top of the duct body 4 is equipped with a smoke exhaust port, and a check valve 42 is installed inside the smoke exhaust port.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A large volume low noise range hood characterized in that: The device includes a housing, a fan, and a duct. The inner wall of the housing is covered with a sound-absorbing plate. The fan is located on the top of the housing and includes a coaxial reverse motor connected to two stages of fan blades. The two stages of fan blades rotate in opposite directions and have opposite tangential angles. The duct is fitted over the fan.

2. The large volume low noise range hood according to claim 1, wherein: The enclosure includes a front box and a rear box that fit together at the front and back.

3. The high-volume, low-noise range hood according to claim 2, characterized in that: The front box consists of a front box panel, a front box back panel, and two front box side panels. The front box back panel and the front box side panels are fitted with sound-absorbing panels.

4. The large volume, low noise range hood of claim 3 wherein: The rear box consists of a rear box frame plate, a rear box grille plate, an L-shaped rear box back plate, and a rear box top plate. The side walls and top walls of the rear box back plate are provided with sound-absorbing plates, the top wall of the rear box back plate is provided with an air inlet, and a sound-absorbing plate is provided below the air inlet.

5. The large volume, low noise range hood of claim 4 wherein: The rear box grille and the rear box top plate are provided with multiple damping and noise reduction holes.

6. The high-volume, low-noise range hood according to claim 5, characterized in that: A smoke collector is connected above the air inlet. The smoke collector has a smoke collection port and multiple silencer holes on the wall of the smoke collection chamber. The top of the smoke collector has an oil collection groove and an oil guide groove. The oil guide groove is connected to the oil collection groove and has an oil drain hole. The fan is connected to the smoke collector, and the oil guide groove collects the oil dripping from the fan.

7. The high-volume, low-noise range hood according to any one of claims 1-6, characterized in that: The coaxial reversing motor includes a reverse motor and a forward motor connected in series. The reverse motor has a hollow shaft, and the forward motor has a solid shaft. The hollow shaft is sleeved on the solid shaft, and the hollow shaft and the solid shaft are connected to a first-stage fan blade.

8. The large volume, low noise range hood of claim 7 wherein: The fan also includes a fan housing, a motor mounting cavity is provided inside the fan housing, a wire through groove is provided on the outer wall of the fan housing, and a wire through hole is provided in the motor mounting cavity.

9. The large volume, low noise range hood of claim 8 wherein: The fan housing includes a base, a cylindrical tube, and a conical tube connected from bottom to top.

10. The high-volume, low-noise range hood according to claim 9, characterized in that: The air duct is fitted with sound-absorbing tiles that fit its inner wall, and the top of the air duct is provided with a smoke exhaust port, which is equipped with a check valve.

Images