A low-noise dual-duct side-suction range hood

Abstract

This invention discloses a low-noise dual-duct side-suction range hood, comprising a range hood housing, a main flue pipe, and a fan. The main flue pipe is fixedly connected to the range hood housing. The range hood housing has a beveled section with two sets of fume inlets, each set including two smoke inlets. Furthermore, a smoke collection hood is provided inside the range hood housing corresponding to each set of fume inlets, with the smoke inlets communicating with the corresponding smoke collection hood. A fan is fixedly connected to a recessed area of ​​the smoke collection hood. The smoke collection hood, fan, and main flue pipe are interconnected. Further, an inspection port is provided on the range hood housing corresponding to each set of smoke collection hoods, located between the two sets of smoke inlets. A detachable fume filter is provided on the inspection port, sealing the inspection port. An oil filter is detachably installed on the fume filter to match each set of smoke inlets. This invention relates to the field of range hood technology, featuring efficient suction and exhaust, low-noise operation, convenient maintenance, and environmental purification.

Description

Technical Field

[0001] This invention relates to the field of range hood technology, specifically a low-noise dual-duct side-suction range hood. Background Technology

[0002] Side-draft range hoods, by placing the smoke inlet on the side of the cooktop, offer significant advantages over top-draft range hoods, including being closer to the source of cooking fumes, having higher capture efficiency, and effectively preventing head bumps. They have become one of the mainstream products in the market. However, as users' demands for quality of life increase, existing side-draft range hoods have revealed a series of inherent technical defects during long-term use, specifically in the following aspects:

[0003] First, noise control is a long-standing problem. Traditional side-suction range hoods usually use a single fan with high power to achieve high suction power, but the aerodynamic and mechanical noise generated by the fan is directly transmitted to the cooking area, which seriously affects the user's cooking experience and physical and mental health. Although some products have tried to reduce noise by adding simple sound insulation cotton, the effect is limited and may bring fire hazards, and cannot achieve efficient and safe all-round noise reduction.

[0004] Secondly, cleaning and maintenance are extremely inconvenient. During operation, range hoods absorb a large amount of grease, especially the grease filter and internal air duct system. In most existing products, the grease filter is fixed inside the range hood. When removing the grease filter, the entire range hood needs to be disassembled. The disassembly process is cumbersome, and users have low willingness to clean, resulting in the accumulation of grease, which not only affects the suction and exhaust effect but also increases noise. Summary of the Invention

[0005] In view of the above-mentioned shortcomings in the existing technology, the purpose of this invention is to provide a range hood that achieves multiple advantages such as high-efficiency exhaust, low-noise operation, convenient maintenance and environmental purification through a dual-air duct design, multi-layer sound insulation structure, automated maintenance system and air purification function.

[0006] The technical solution adopted by the present invention to achieve the above objectives is: a low-noise dual-duct side-suction range hood, including a range hood shell, a main flue pipe, and a fan. The main flue pipe is fixedly connected to the range hood shell. The range hood shell has a sloping section, and the sloping section has two sets of fume inlets. Each set of fume inlets includes two sets of smoke inlets. The range hood shell has a smoke collection hood corresponding to each set of fume inlets. The smoke inlets are connected to the corresponding smoke collection hood.

[0007] Each of the smoke collection hoods has a recessed area, and the fan is fixedly connected to the recessed area. The inlet of the fan is connected to the inside of the smoke collection hood, and the outlet of the fan is connected to the main flue pipe through a pipe, and each pipe is equipped with a one-way valve.

[0008] The outer casing of the range hood is provided with an inspection port corresponding to each set of smoke collection hoods. The inspection port is located between two sets of smoke inlets. An oil fume plate is detachably provided on the inspection port. The oil fume plate seals the inspection port. An oil filter is detachably installed on the oil fume plate in conjunction with each set of smoke inlets.

[0009] In the above technical solution, a soundproof cover is fixedly connected to the smoke collection hood corresponding to the recessed area, and the fan is located inside the soundproof cover. The noise transmitted by the fan when it is working can be reduced by the soundproof cover. Specifically, the soundproof cover includes a metal base layer and a soundproof layer A fixedly connected to the inner wall of the metal base layer.

[0010] In the above technical solution, in order to make the smoke hood and the fume plate have the characteristics of sound insulation, heat insulation and oil repellency, the smoke hood and the fume plate each include a metal inner layer, a heat insulation layer, a sound insulation layer B and a metal outer layer that are fixedly connected in sequence from the inside to the outside.

[0011] Furthermore, to improve overall noise reduction, a sound insulation layer C is fixedly connected to the inner wall of the range hood casing.

[0012] In the above technical solution, in order to collect the oil isolated by the oil mesh, an oil drain port is provided at the bottom of the smoke hood, and an oil collection port is provided at the bottom of the smoke hood shell corresponding to the oil drain port. An oil collection trough is detachably and fixedly connected inside the oil collection port.

[0013] Furthermore, the inside of the oil collecting groove is provided with a guide slope, and an oil collecting cup is threadedly connected to the oil collecting groove at the low point position corresponding to the guide slope.

[0014] In the above technical solution, the following structure is adopted to achieve the installation of the oil mesh on the oil plate:

[0015] The bottom end of the oil mesh is fixedly connected to a sliding T-shaped strip, and the oil fume plate is provided with a T-shaped groove. The top end of the T-shaped groove is open, and the bottom end of the T-shaped groove is closed. The sliding T-shaped strip is slidably connected in the T-shaped groove.

[0016] In the above technical solution, in order to improve the sealing performance of the oil plate, a sealing outer ring is fixedly connected to the bottom edge of the oil fume plate, and a sealing strip is fixedly connected to the sealing outer ring.

[0017] In one embodiment, the fume plate is rotatably connected to the inspection port, and the fume hood is equipped with a lifting mechanism in conjunction with the fume plate. A drive device is fixedly connected inside the casing of the range hood. The drive device and the lifting mechanism are connected through a first transmission structure. The lifting mechanism can pull the fume plate to rotate, so that the fume plate can rotate to open or close the inspection port.

[0018] With the above structure, the oil plate can be automatically disassembled, making it easier to clean the oil filter, reducing the operation process, and making the overall maintenance of the range hood simpler;

[0019] To further optimize the process and purify the air around the range hood, an air purification system is provided on the range hood casing. The air purification system includes a non-powered pressurized pump for pumping air purification liquid. The non-powered pressurized pump is poweredly connected to the drive device through a second transmission structure.

[0020] Furthermore, the first transmission structure includes a first one-way transmission component, and the second transmission structure includes a second one-way transmission component. Under the action of the first one-way transmission component and the second one-way transmission component, when the driving device drives the lifting mechanism to work, the unpowered pressurizing pump does not work, and when the driving device drives the unpowered pressurizing pump to work, the lifting mechanism does not work.

[0021] The above structure allows a set of drive devices to provide the necessary power for the lifting mechanism and air purification system, reducing the failure rate of the range hood.

[0022] In the above technical solution, the lifting mechanism adopts the following structure:

[0023] The lifting mechanism includes a sliding column, a moving platform, a reciprocating screw, a traction arm, and a traction frame. The sliding column is fixedly connected to the smoke hood, and the moving platform is slidably connected to the sliding column. The reciprocating screw is threadedly connected to the moving platform, and an input shaft is fixedly connected to the top of the reciprocating screw, extending out of the smoke hood. A worm gear is fixedly connected to the top of the smoke hood, and a worm is rotatably connected to the smoke hood. The worm meshes with the worm gear, and the worm is powered by the drive device through the first transmission structure. The traction arm is fixedly connected to the moving platform, and a moving shaft is fixedly connected to the bottom of the traction arm. The traction frame is fixedly connected to the fume plate, and the traction frame has a sliding groove. The moving shaft engages with the sliding groove, allowing it to rotate within the sliding groove or slide linearly along it.

[0024] In the above technical solution, the air purification system adopts the following structure:

[0025] The air purification system also includes a liquid storage tank, an atomizing cover, and an atomizing nozzle. The liquid storage tank and the non-powered pressurizing pump are fixedly connected inside the range hood housing. The range hood housing is provided with a spray nozzle. The atomizing cover is fixedly connected inside the range hood housing corresponding to the spray nozzle. The atomizing nozzle is fixedly connected to the atomizing cover. The non-powered pressurizing pump, the atomizing nozzle, and the liquid storage tank are connected by pipelines.

[0026] In the above technical solution, the first transmission structure and the second transmission structure adopt the following structure:

[0027] The first transmission structure further includes a connecting shaft and a first synchronous transmission component. The two sets of worm gears are fixedly connected through the connecting shaft. An integrated frame is fixedly connected inside the smoke machine housing. A central shaft is rotatably connected to the integrated frame. The central shaft is provided with the first one-way transmission component. The first one-way transmission component is a ratchet component. The central shaft and the connecting shaft are connected by the first synchronous transmission component. The first synchronous transmission component is located on the power output end side of the first one-way transmission component.

[0028] The second transmission structure also includes a pump shaft and a second synchronous transmission component. The pump shaft is fixedly connected to the input end of the non-powered pressurization pump. The second one-way transmission component is provided on the pump shaft. The second one-way transmission component is a ratchet component. The intermediate shaft and the pump shaft are connected by the second synchronous transmission component, and the second synchronous transmission component is located on the power input end side of the second one-way transmission component.

[0029] The drive unit is powered by the central rotating shaft.

[0030] The beneficial effects of this invention are:

[0031] 1. The design adopts two independent sets of fume extraction, which means that when only one burner needs to be used, only the fan on the corresponding side can be turned on and the other side can be turned off. At this time, the overall noise can be reduced, achieving energy saving and quiet operation. When both burners are used at the same time, both fans start at high speed at the same time, providing the maximum exhaust volume, improving the fume capture efficiency, and reducing the spread of fume.

[0032] 2. A fume hood is detachably installed between the two sets of smoke inlets, and an oil filter is detachably installed on the fume hood to match each set of smoke inlets. This way, when cleaning the oil filter, it is not necessary to disassemble the entire range hood, making maintenance simple, convenient and quick.

[0033] 3. A soundproof cover is installed on the outside of the fan to directly reduce the noise of the fan operation. At the same time, the smoke hood and oil fume plate adopt a multi-layer composite structure, which has the functions of sound insulation, heat insulation and oil repellency. In addition, a sound insulation layer C is added to the inner wall of the smoke hood shell to further improve the overall noise reduction effect.

[0034] 4. The fume filter is installed on the inspection port by rotation and is equipped with a lifting mechanism. The fume filter can be automatically disassembled through the drive device and the lifting mechanism, which simplifies the oil filter cleaning process.

[0035] 5. The range hood has a built-in air purification system that uses a drive unit to power a non-powered pressure pump to extract odor-purifying liquid to purify the surrounding air. It has multiple functions and improves the performance.

[0036] 6. The drive unit operates through the first transmission structure (controlling the lifting mechanism) and the second transmission structure (controlling the odor removal system) respectively, and uses a unidirectional transmission component to achieve functional mutual exclusion (the odor removal system does not work when the lifting mechanism is working, and vice versa). A single motor drives the dual systems, reducing the failure rate. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the fume extraction panel when it is closed in this invention;

[0038] Figure 2 This is a schematic diagram of the structure of the fume extraction plate when it is opened in Embodiment 1 of the present invention;

[0039] Figure 3 This is a schematic diagram of the fan installation structure in this invention;

[0040] Figure 4 This is a schematic diagram of the structure when the fume extractor and the oil filter are disassembled in this invention;

[0041] Figure 5 for Figure 4 Detailed structural diagram of part a;

[0042] Figure 6 This is a schematic diagram of the structure of the soundproof cover in this invention;

[0043] Figure 7 This is a schematic diagram of the structure of the smoke hood and the fume extraction plate in this invention;

[0044] Figure 8 This is an exploded structural diagram of the oil collecting tank and oil collecting cup in this invention;

[0045] Figure 9 This is a schematic diagram of the structure of the fume extraction plate when it is opened in Embodiment 2 of the present invention;

[0046] Figure 10 This is a schematic diagram of the internal structure of the range hood casing in Embodiment 2 of the present invention;

[0047] Figure 11 This is a schematic diagram of the lifting mechanism in this invention;

[0048] Figure 12 for Figure 11 Detailed structural diagram of part b in the middle;

[0049] Figure 13 This is a schematic diagram of the power connection structure of the drive device in this invention;

[0050] Figure 14 This is a schematic diagram of the first transmission structure and the second transmission structure in this invention.

[0051] In the diagram: 100 Range hood casing, 101 Sloping section, 102 Fume inlet, 1021 Smoke inlet, 103 Inspection port, 104 Fume plate, 1041 Sealing outer ring, 1042 T-shaped groove, 105 Oil collection groove, 1051 Guide slope, 1052 Oil collection cup, 106 Spray nozzle;

[0052] 200 main flue pipe;

[0053] 300 fan;

[0054] 400 Fume Hood, 401 Recessed Area, 402 Oil Drain;

[0055] 500 check valve;

[0056] 600 oil filter, 601 sliding T-shaped strip;

[0057] 700 Soundproof enclosure, 701 Metal base layer, 702 Soundproof layer A;

[0058] 801 Metal inner layer, 802 Heat insulation layer, 803 Sound insulation layer B, 804 Metal outer layer;

[0059] 900 Lifting mechanism, 901 Sliding column, 902 Motion table, 903 Lead screw, 904 Traction arm, 905 Traction frame, 906 Worm gear, 907 Worm, 908 Motion shaft, 909 Sliding groove;

[0060] 1000 drive unit;

[0061] 2000 pressurizing pump, 2001 liquid storage tank, 2002 atomizing hood;

[0062] 3001 connecting shaft, 3002 first one-way transmission component, 3003 first synchronous transmission component, 3004 intermediate shaft; 4001 pump shaft, 4002 second one-way transmission component, 4003 second synchronous transmission component. Detailed Implementation

[0063] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0064] Example 1

[0065] Please see Figures 1-8 A low-noise dual-duct side-suction range hood includes a range hood housing 100, a main flue pipe 200, and a fan 300. Please refer to [link / reference needed]. Figure 1A main flue pipe 200 is fixedly connected to the outer casing 100 of the range hood. The outer casing 100 has a beveled section 101 with two sets of fume inlets 102, each set including two smoke inlets 1021. Furthermore, a smoke collection hood 400 is provided inside the outer casing 100 corresponding to each set of fume inlets 102. The smoke inlets 1021 communicate with the corresponding smoke collection hood 400. Please refer to [further details omitted]. Figure 3 Each smoke hood 400 has a recessed area 401, and a fan 300 is fixedly connected in the recessed area 401. The inlet of the fan 300 is connected to the inside of the smoke hood 400, and the outlet of the fan 300 is connected to the main flue pipe through a pipe. Each pipe is equipped with a one-way valve 500. In this way, the fan 300 can create negative pressure in the smoke collection chamber, thereby drawing the oil fumes into the smoke collection chamber through the smoke inlet 1021, and then discharging the oil fumes into the main flue pipe 200, and finally expelling them to the outside. With the above structure, when only one burner is used, only the fan 300 on the corresponding side can be turned on, and the other side can be turned off. At this time, the overall noise can be reduced, achieving energy saving and quiet operation. At the same time, the one-way valve 500 prevents the oil fumes from leaking out. When both burners are used at the same time, both fans 300 start at high speed at the same time, providing the maximum exhaust volume, improving the oil fume capture efficiency, and reducing the diffusion of oil fumes.

[0066] Furthermore, please refer to Figure 2 Each set of smoke collection hoods 400 on the outer casing 100 of the range hood is provided with an inspection port 103, and the inspection port 103 is located between two sets of smoke inlets 1021. A fume plate 104 is detachably provided on the inspection port 103. In this embodiment, the fume plate 104 can be fixedly installed on the outer casing 100 of the range hood with bolts, and after installation, the fume plate 104 seals the inspection port 103. For details, please refer to Figure 5 A sealing outer ring 1041 is fixedly connected to the bottom edge of the fume extraction plate 104, and a sealing strip is fixedly connected to the sealing outer ring 1041. Please also refer to... Figure 4 An oil mesh 600 is detachably installed on the oil fume plate 104 in conjunction with each set of smoke inlets 1021, so that when the fan 300 draws out the oil fumes, the oil fumes pass through the oil mesh 600 and the oil particles in the oil fumes are separated by the oil mesh 600.

[0067] To elaborate further, please refer to Figure 5 The bottom end of the oil mesh 600 is fixedly connected to a sliding T-shaped strip 601, and the oil fume plate 104 is provided with a T-shaped groove 1042. The top of the T-shaped groove 1042 is open, and the bottom of the T-shaped groove 1042 is closed. The sliding T-shaped strip 601 is slidably connected in the T-shaped groove 1042. This allows the oil mesh 600 to be installed and is easy to disassemble. When the oil fume plate 104 is installed, because the oil mesh 600 is in an inclined structure, gravity can be used to ensure the stability of the oil mesh 600.

[0068] To go further, please refer to Figure 1 , 3 To collect the oil isolated by the oil filter 600, an oil drain port 402 is provided at the bottom of the fume hood 400, and an oil collection port is provided at the bottom of the range hood housing 100 corresponding to the oil drain port 402. An oil collection trough 105 is detachably and fixedly connected inside the oil collection port. The oil collection trough 105 can be fixedly connected to the range hood housing 100 by bolts, and the oil collection trough 105 can seal the oil collection port. Furthermore, please refer to... Figure 8 The oil collection tank 105 has a guide slope 1051 inside. An oil collection cup 1052 is threadedly connected to the oil collection tank 105 at the low point of the guide slope 1051. Since the oil screen 600 and the oil fume plate 104 are both inclined structures, the collected oil can enter the oil collection tank 105 through the oil outlet 402 and the oil collection port due to gravity. The oil collection tank 105 can fully collect the oil. Then the oil flows into the oil collection cup 1052 by gravity. This structure can effectively collect the oil and reduce the number of times the oil collection tank 105 is disassembled, resulting in excellent performance.

[0069] Furthermore, please refer to Figure 3 , Figure 6 , Figure 7 To improve the overall noise reduction of the range hood, a soundproof cover 700 is fixedly connected to the recessed area 401 on the smoke collection hood 400. The fan 300 is located inside the soundproof cover 700. In this way, the noise transmitted by the fan 300 when it is working can be reduced through the soundproof cover 700 shell. Specifically, the soundproof cover 700 includes a metal base layer 701 and a sound insulation layer A702 fixedly connected to the inner wall of the metal base layer 701 to achieve sound insulation of the fan 300 while ensuring the overall strength.

[0070] In addition, the smoke hood 400 and the fume plate 104 both include a metal inner layer 801, a heat insulation layer 802, a sound insulation layer B803, and a metal outer layer 804 that are fixedly connected in sequence from the inside to the outside. This makes the smoke hood 400 and the fume plate 104 have heat insulation and sound insulation effects. The inner layer is made of metal, which can prevent high-temperature fumes from damaging it and facilitates the cleaning of oil stains.

[0071] Furthermore, to improve overall noise reduction, a sound insulation layer C is fixedly connected to the inner wall of the range hood casing 100 to further reduce noise transmission;

[0072] All of the aforementioned metal layers can be made of stainless steel, while the sound insulation layers are made of high-temperature resistant sound-absorbing cotton.

[0073] Example 2

[0074] Please see Figure 1 , Figures 9-12Based on Embodiment 1, in this embodiment, the fume plate 104 is rotatably connected to the inspection port 103, and the fume hood 400 is equipped with a lifting mechanism 900 to cooperate with the fume plate 104. A drive device 1000 is fixedly connected inside the range hood shell. The drive device 1000 is poweredly connected to the lifting mechanism 900, so that the fume plate 104 can be pulled to rotate through the lifting mechanism 900, thereby opening or closing the inspection port 103 by rotating the fume plate 104. In this way, the oil plate can be automatically disassembled and installed through the above structure, which makes it easier to clean the oil filter 600, reduces the operation process, and makes the overall maintenance of the range hood simpler.

[0075] Specifically, in this embodiment, please refer to Figure 11 The lifting mechanism 900 includes a sliding column 901, a moving table 902, a lead screw 903, a traction arm 904, and a traction frame 905. Specifically, the sliding column 901 is fixedly connected to the smoke hood 400, the moving table 902 is slidably connected to the sliding column 901, the lead screw 903 is threadedly connected to the moving table 902, an input shaft is fixedly connected to the top of the lead screw 903, the input shaft extends out of the smoke hood 400, a worm gear 906 is fixedly connected to the top of the smoke hood 400, and a worm 905 is rotatably connected to the smoke hood 400. 07. The worm 907 is meshed with the worm wheel 906, and the worm 907 is powered by the drive device 1000. A traction arm 904 is fixedly connected to the motion table 902, and a motion shaft 908 is fixedly connected to the bottom end of the traction arm 904. A traction frame 905 is fixedly connected to the fume plate 104, and a sliding groove 909 is provided on the traction frame 905. The motion shaft 908 cooperates with the sliding groove 909, and the motion shaft 908 can rotate in the sliding groove 909 or slide linearly along the sliding groove 909.

[0076] When the drive device 1000 drives the worm 907 to rotate, the worm 907 drives the worm wheel 906 to rotate, which in turn enables the lead screw 903 to rotate. When the lead screw 903 rotates, the motion table 902 can move linearly upward or downward. At this time, the motion table 902 can pull the oil plate to rotate through the traction arm 904, and the motion shaft 908 slides linearly in the sliding groove 909, which enables the automatic disassembly of the fume plate 104.

[0077] For further optimization, please refer to Figure 1 , Figure 10To purify the air around the range hood, an air purification system is installed on the range hood casing. This system includes a pressure pump 2000, a liquid storage tank 2001, an atomizing cover 2002, and atomizing nozzles. Specifically, the liquid storage tank 2001 and the pressure pump 2000 are fixedly connected inside the range hood casing. A spray nozzle 106 is located on the range hood casing, and an atomizing cover is fixedly connected inside the casing corresponding to the spray nozzle 106. An atomizing nozzle is fixedly connected to the atomizing cover. Pipelines connect the pressure pump 2000, the atomizing nozzles, and the liquid storage tank 2001. The pressure pump 2000 pumps the air purification liquid stored in the liquid storage tank 2001 to the atomizing nozzles, which then atomize the liquid and disperse it from the spray nozzles 106. This effectively purifies the air around the range hood, providing excellent performance.

[0078] Example 3

[0079] Please see Figure 13 , Figure 14 Based on Embodiment 2, this embodiment further provides power to the pressure pump 2000 and the lead screw 903 through a set of drive devices 1000. In this embodiment, the lead screw 903 is a reciprocating lead screw 903. That is, when the motion table 902 moves to the bottom end, the lead screw 903 continues to rotate and the motion table 902 rises. When the motion table 902 moves to the top end, the lead screw 903 continues to rotate and the motion table 902 will descend. The pressure pump 2000 is a non-powered pressure pump 2000, that is, a pump body without a motor. The reciprocating lead screw 903 is powered by the drive device 1000 through a first transmission structure, while the non-powered pressure pump 2000 is powered by the drive device 1000 through a second transmission structure.

[0080] Specifically, the first transmission structure includes a connecting shaft 3001, a first one-way transmission component 3002, and a first synchronous transmission component 3003. That is, the two sets of worm gears 907 are fixedly connected by the connecting shaft 3001, and an integrated frame is fixedly connected inside the casing of the smoke machine. A central shaft 3004 is rotatably connected to the integrated frame. The central shaft 3004 is provided with the first one-way transmission component 3002. In this embodiment, the first one-way transmission component 3002 is a ratchet component. In addition, the central shaft 3004 and the connecting shaft 3001 are connected by the first synchronous transmission component 3003, and the first synchronous transmission component 3003 is located on the power output end side of the first one-way transmission component 3002.

[0081] Furthermore, the second transmission structure includes a pump shaft 4001, a second one-way transmission component 4002, and a second synchronous transmission component 4003. That is, a pump shaft 4001 is fixedly connected to the input end of the unpowered pressurization pump 2000, and a second one-way transmission component 4002 is provided on the pump shaft 4001. In this embodiment, the second one-way transmission component 4002 is a ratchet component, and the intermediate shaft 3004 and the pump shaft 4001 are connected by the second synchronous transmission component 4003. The second synchronous transmission component 4003 is located on the power input end side of the second one-way transmission component 4002.

[0082] Furthermore, the drive unit 1000 is poweredly connected to the central shaft 3004. The first synchronous transmission component 3003 and the second synchronous transmission component 4003 are both selected as combinations of synchronous belts and synchronous pulleys. Under the action of the first one-way transmission component 3002 and the second one-way transmission component 4002, when the drive unit 1000 drives the lifting mechanism 900 to work, the non-powered pressurizing pump 2000 does not work, and when the drive unit 1000 drives the non-powered pressurizing pump 2000 to work, the lifting mechanism 900 does not work.

[0083] The above structure enables a set of drive units 1000 to provide the necessary power for the lifting mechanism 900 and the air purification system, thereby reducing the failure rate of the range hood.

[0084] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0085] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A low-noise dual-duct side-suction range hood, comprising a range hood housing (100), a main flue pipe (200), and a fan (300), wherein the main flue pipe (200) is fixedly connected to the range hood housing (100), and the range hood housing (100) is provided with a beveled portion (101), characterized in that: The inclined surface (101) is provided with two sets of fume inlets (102), each set of fume inlets (102) includes two sets of smoke inlets (1021), and the inside of the range hood housing (100) is provided with a smoke collection hood (400) corresponding to each set of fume inlets (102), and the smoke inlets (1021) are connected to the corresponding smoke collection hood (400); Each of the smoke collection hoods (400) is provided with a recessed area (401), and the fan (300) is fixedly connected in the recessed area (401). The inlet of the fan (300) is connected to the inside of the smoke collection hood (400), and the outlet of the fan (300) is connected to the main flue pipe (200) through a pipe. Each of the pipes is provided with a one-way valve (500). The outer casing (100) of the range hood is provided with an inspection port (103) corresponding to each set of the smoke collection hoods (400). The inspection port (103) is located between two sets of smoke inlets (1021). The inspection port (103) is detachably provided with a fume plate (104). The fume plate (104) seals the inspection port (103). The fume plate (104) is detachably equipped with an oil filter (600) in conjunction with each set of smoke inlets (1021). The fume hood (104) is rotatably connected to the inspection port (103). The fume hood (400) is equipped with a lifting mechanism (900) to cooperate with the fume hood (104). A drive device (1000) is fixedly connected inside the casing (100) of the range hood. The drive device (1000) and the lifting mechanism (900) are connected by a first transmission structure. The lifting mechanism (900) can pull the fume hood (104) to rotate, so that the fume hood (104) can rotate to open or close the inspection port (103). An air purification system is provided on the outer casing (100) of the range hood. The air purification system includes a non-powered pressurized pump (2000) for pumping air purification liquid. The non-powered pressurized pump (2000) and the drive device (1000) are connected by a second transmission structure. The first transmission structure includes a first one-way transmission component (3002), and the second transmission structure includes a second one-way transmission component (4002). Under the action of the first one-way transmission component (3002) and the second one-way transmission component (4002), when the driving device (1000) drives the lifting mechanism (900) to work, the non-powered pressurizing pump (2000) does not work, and when the driving device (1000) drives the non-powered pressurizing pump (2000) to work, the lifting mechanism (900) does not work.

2. The low-noise dual-duct side-suction range hood according to claim 1, characterized in that: A soundproof cover (700) is fixedly connected to the smoke collection hood (400) corresponding to the recessed area (401), and the fan (300) is located inside the soundproof cover (700).

3. A low-noise dual-duct side-suction range hood according to claim 2, characterized in that: The soundproof cover (700) includes a metal base layer (701) and a soundproof layer A (702) fixedly connected to the inner wall of the metal base layer (701). The smoke collection hood (400) and the fume plate (104) each include, from the inside out, a metal inner layer (801), a heat insulation layer (802), a sound insulation layer B (803), and a metal outer layer (804) that are fixedly connected in sequence. A sound insulation layer C is fixedly connected to the inner wall of the outer shell (100) of the smoke hood.

4. A low-noise dual-duct side-suction range hood according to claim 1, characterized in that: The bottom of the smoke hood (400) is provided with an oil drain port (402), and the bottom of the smoke machine housing (100) is provided with an oil collection port corresponding to the oil drain port (402). An oil collection trough (105) is detachably and fixedly connected inside the oil collection port. The oil collection groove (105) is provided with a guide slope (1051) inside, and an oil collection cup (1052) is threadedly connected to the oil collection groove (105) at the low point position corresponding to the guide slope (1051).

5. A low-noise dual-duct side-suction range hood according to claim 1, characterized in that: The bottom end of the oil mesh (600) is fixedly connected to a sliding T-shaped strip (601), and the oil fume plate (104) is provided with a T-shaped groove (1042). The top end of the T-shaped groove (1042) is open, and the bottom end of the T-shaped groove (1042) is closed. The sliding T-shaped strip (601) is slidably connected in the T-shaped groove (1042).

6. A low-noise dual-duct side-suction range hood according to claim 1, characterized in that: A sealing outer ring (1041) is fixedly connected to the bottom edge of the fume plate (104), and a sealing strip is fixedly connected to the sealing outer ring (1041).

7. A low-noise dual-duct side-suction range hood according to claim 1, characterized in that: The lifting mechanism (900) includes a sliding column (901), a motion table (902), a reciprocating screw (903), a traction arm (904), and a traction frame (905). The sliding column (901) is fixedly connected to the smoke hood (400), the motion table (902) is slidably connected to the sliding column (901), the reciprocating screw (903) is threadedly connected to the motion table (902), an input shaft is fixedly connected to the top of the reciprocating screw (903), the input shaft passes through the smoke hood (400), a worm gear (906) is fixedly connected to the top of the smoke hood (400), and a worm (907) is rotatably connected to the smoke hood (400). The worm (907) is meshed with the worm wheel (906). The worm (907) is powered by the drive device (1000) through the first transmission structure. The traction arm (904) is fixedly connected to the motion table (902). The bottom end of the traction arm (904) is fixedly connected to the motion shaft (908). The traction frame (905) is fixedly connected to the fume plate (104). The traction frame (905) is provided with a sliding groove (909). The motion shaft (908) cooperates with the sliding groove (909). The motion shaft (908) can rotate in the sliding groove (909) or slide linearly along the sliding groove (909).

8. A low-noise dual-duct side-suction range hood according to claim 7, characterized in that: The air purification system also includes a liquid storage tank (2001), an atomizing cover (2002), and an atomizing nozzle. The liquid storage tank (2001) and the non-powered pressurizing pump (2000) are fixedly connected inside the range hood housing. The range hood housing (100) is provided with a spray nozzle (106). The atomizing cover (2002) is fixedly connected inside the range hood housing corresponding to the spray nozzle (106). The atomizing nozzle is fixedly connected to the atomizing cover (2002). The non-powered pressurizing pump (2000), the atomizing nozzle, and the liquid storage tank (2001) are connected by pipelines.

9. A low-noise dual-duct side-suction range hood according to claim 8, characterized in that: The first transmission structure further includes a connecting shaft (3001) and a first synchronous transmission component (3003). The two sets of worm gears (907) are fixedly connected to each other through the connecting shaft (3001). An integrated frame is fixedly connected inside the casing of the smoke machine. A central shaft (3004) is rotatably connected to the integrated frame. The central shaft (3004) is provided with the first one-way transmission component (3002). The first one-way transmission component (3002) is a ratchet component. The central shaft (3004) and the connecting shaft (3001) are connected by the first synchronous transmission component (3003). The first synchronous transmission component (3003) is located on the power output end side of the first one-way transmission component (3002). The second transmission structure further includes a pump shaft (4001) and a second synchronous transmission component (4003). The input end of the unpowered pressurized pump (2000) is fixedly connected to the pump shaft (4001). The pump shaft (4001) is provided with a second one-way transmission component (4002). The second one-way transmission component (4002) is a ratchet component. The intermediate shaft (3004) and the pump shaft (4001) are connected by the second synchronous transmission component (4003). The second synchronous transmission component (4003) is located on the power input end side of the second one-way transmission component (4002). The drive unit (1000) is poweredly connected to the central shaft (3004).

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