A range hood

Abstract

The range hood provided by the present invention comprises: a smoke collecting hood with a built-in volute and a fan assembly, a smoke inlet on one side and a smoke outlet on the other side; a housing connected to the smoke collecting hood and in communication with the smoke outlet, and respectively provided with a smoke outlet and an exhaust outlet; an air guide device arranged in the housing, comprising a power unit and a smoke filter unit, the smoke filter unit being adapted to centrifugally move under the action of the power unit to separate the smoke and guide the smoke to the smoke outlet and the exhaust outlet respectively; a smoke exhaust adjustment device arranged in the housing, adapted to adjust the smoke guide amount of the air guide device in a stopped state. This arrangement not only filters the smoke, but also reduces the kitchen temperature without consuming additional energy, thereby improving the energy-saving effect of the range hood and effectively solving the problem of serious energy consumption in the prior art of cooling the range hood by additionally providing a guide device.

Description

Technical Field

[0001] The present invention relates to the technical field of range hoods, and in particular to a range hood. Background Art

[0002] As the main place for people to cook, the quality of the kitchen environment directly affects people's cooking experience. Especially in summer, the high temperature cooking environment in the kitchen greatly affects the user's cooking experience.

[0003] With the improvement of modern living standards, range hoods have gradually entered the kitchens of countless households, improving the user's cooking experience. In the prior art, range hoods are equipped with additional air guide devices such as fans or cooling fans to assist in cooling the kitchen environment. However, such devices consume a lot of energy and are not conducive to achieving energy conservation and environmental protection in the use of range hoods. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of serious energy consumption in the prior art of cooling the range hood by additionally providing a guide device, thereby providing a range hood.

[0005] The present invention provides a range hood, comprising: a smoke collecting hood with a built-in volute and a fan assembly, a smoke inlet on one side and a smoke outlet on the other side; a shell body, connected to the smoke collecting hood and in communication with the smoke outlet, and respectively provided with a smoke outlet and an exhaust port; an air guide device, arranged in the shell body, comprising a power part and a smoke filter part, the smoke filter part having a working state in which centrifugal motion is performed under the action of the power part, smoke is separated, and smoke is respectively guided to the smoke outlet and the exhaust port, and a stop state in which centrifugal rotation is stopped; a smoke exhaust adjustment device, arranged in the shell body, and suitable for adjusting the smoke guiding amount of the air guide device in the stop state.

[0006] The smoke filter unit includes: a first cylinder, which is respectively connected to the smoke outlet, smoke exhaust port and exhaust port, one end along the axis is connected to the power unit, and the other end is movably connected to the inner wall of the shell, suitable for rotating circumferentially under the action of the power unit and separating the smoke.

[0007] A partition plate is provided on the inner wall of the shell, the smoke outlet and the smoke exhaust port are respectively arranged on both sides of the partition plate, and the partition plate is movably connected to the first cylinder and is circumferentially sealed;

[0008] The first cylinder is provided with a first opening and a second opening along the side wall, and the first opening is arranged opposite to the second opening.

[0009] The smoke exhaust adjustment device includes: an angle adjustment component, suitable for adjusting the circumferential angle of the air guide device; a detection component, arranged on the inner wall of the shell, adjacent to the smoke exhaust port, and communicatively connected with the angle adjustment component and the power unit, suitable for detecting the circumferential angle of the first opening and the second opening.

[0010] The angle adjustment component includes: an angle adjustment body, which is arranged on the shell and arranged toward the power unit, including an adjusting drive and a first limit member, and the adjusting drive is communicatively connected to the detection component; a first limit fitting member, which is arranged on the output shaft of the power unit, and the first limit fitting member has a limiting state in which it rotates toward the first limit fitting member under the action of the adjusting drive member and is engaged with the first limit fitting member, and a disengaged state in which it rotates away from the first limit fitting member under the action of the adjusting drive member and is disengaged from the first limit fitting member.

[0011] One end of the first cylinder away from the power unit is communicated with the exhaust port, and the exhaust port is arranged on the axis of the first cylinder.

[0012] The smoke filter unit also includes a smoke guide unit including a plurality of arcuate ribs protruding along the inner side wall of the first cylinder and evenly distributed in a spiral shape, suitable for guiding the separated gas to the exhaust port.

[0013] The range hood also includes: a cold air pipe, which is protruding along the exhaust port in the direction toward the inner side of the first cylinder, extends to the inside of the first cylinder, and is coaxial with the first cylinder. The end of the cold air pipe away from the exhaust port is set as a filter end, on which a filter element is provided, and the filter end is adjacent to the end of the first cylinder connected to the power part.

[0014] The adjusting drive member comprises: an adjusting drive body, which is arranged on the cold air pipe and on which an adjusting drive shaft parallel to the cold air pipe is arranged, and an end of the adjusting drive shaft is connected to a first limiting member.

[0015] The first limiting fitting includes a rotating body, with a plurality of limiting blocks evenly distributed and protruding along the circumference of the rotating body, adjacent limiting blocks being arranged vertically, and a first limiting arc edge and a second limiting arc edge being sequentially arranged between the limiting blocks along the circumference, wherein the outer diameter of the first limiting arc edge is greater than the outer diameter of the second limiting arc edge;

[0016] The first limiting member is arranged perpendicular to the adjusting drive shaft, and a concave arc portion is provided at one end of the first limiting member away from the adjusting drive shaft, and the inner diameter of the concave arc portion is equal to the outer diameter of the second limiting arc edge.

[0017] The arc-shaped ribs are arranged in a right-handed manner and face the power unit. The first cylinder rotates clockwise under the action of the power unit.

[0018] or,

[0019] The arc-shaped rib body is arranged in a left-handed manner and faces the power unit. The first cylinder is arranged to rotate counterclockwise under the action of the power unit.

[0020] The smoke outlet is arranged away from the filter end.

[0021] The power unit includes: a power part, whose output shaft is coaxially arranged with the axis of the first cylinder and passes through the end of the first cylinder; a limiting assembly, including a clamping shaft part and a locking part, which are respectively arranged on both sides of the end of the first cylinder, connected to the output shaft, and suitable for connecting and limiting the output shaft and the first cylinder.

[0022] The locking member and the first position-limiting fitting member are integrally arranged.

[0023] A matching hole is provided at the end of the first cylinder, and the matching hole is provided on the axis of the first cylinder. The output shaft passes through the matching hole, and the matching hole includes a relatively set limiting groove. The clamping shaft passes through the output shaft and is matched with the limiting groove.

[0024] The range hood also includes: a second stop, which is protrudingly arranged around the power unit, suitable for limiting one end of the first cylinder along the circumferential direction and being movably connected thereto; a first stop, opposite to the second stop, which is arranged on the inner wall of the shell, suitable for limiting the other end of the first cylinder along the circumferential direction and being movably connected thereto.

[0025] The range hood also includes: an air guide cavity, which is arranged on the outside of the shell and is connected to the exhaust port, and a cold air outlet is arranged along the side away from the exhaust port; an air guide plate, which is arranged on the cold air outlet and is suitable for adjusting the air outlet direction of the cold air outlet.

[0026] The inner diameter of the exhaust port gradually decreases in a direction away from the first cylinder.

[0027] The technical solution of the present invention has the following advantages:

[0028] 1. The range hood provided by the present invention comprises: a smoke collecting hood with a built-in volute and a fan assembly, a smoke inlet being provided on one side and a smoke outlet being provided on the other side; a shell being connected to the smoke collecting hood and in communication with the smoke outlet, and respectively provided with a smoke outlet and an exhaust port; an air guide device being arranged in the shell, comprising a power part and a smoke filter part, the smoke filter part having a working state in which centrifugal motion is performed under the action of the power part, smoke is separated, and smoke is respectively guided to the smoke outlet and the exhaust port, and a stop state in which centrifugal rotation is stopped; a smoke exhaust adjustment device being arranged in the shell, and suitable for adjusting the smoke guiding amount of the air guide device in the stop state.

[0029] By setting up an air guide device including a power part and a smoke filter part, the smoke filter part can make centrifugal motion under the drive of the power part, and the smoke collected by the smoke hood can be separated into oil and gas. At the same time, the temperature of the gas separated in the smoke filter part is reduced by the air flow movement, and the smoke containing a large amount of heat and oil is discharged from the smoke outlet, and the relatively low-temperature separated gas is discharged from the exhaust port. When the exhaust port is set in a kitchen environment, heat exchange with the hot air in the kitchen environment can be achieved, the kitchen temperature can be reduced, and the user's cooking experience can be improved. At the same time, by setting up a smoke exhaust adjustment device, the air guide device in the stopped state can be adjusted to ensure that the oil smoke flows smoothly from the smoke outlet to the smoke outlet, avoiding the obstruction of the oil smoke when it is in the stopped state. This setting reduces the kitchen temperature while filtering the smoke, does not require additional energy consumption, improves the energy-saving effect of the range hood, and effectively solves the defect of serious energy consumption in the cooling method of the range hood provided with an additional air guide device in the prior art.

[0030] 2. The range hood provided by the present invention is provided with a partition plate on the inner wall of the shell, the smoke outlet and the smoke exhaust port are respectively arranged on both sides of the partition plate, the partition plate is movably connected to the first cylinder and is circumferentially sealed; the first cylinder is provided with a first opening and a second opening along the side wall, and the first opening is arranged opposite to the second opening.

[0031] By setting a partition plate, movably connected to the first cylinder, and circumferentially sealed, the two are combined to divide the shell into a half shell directly connected to the smoke outlet, and a half shell directly connected to the smoke exhaust port, and two openings are set on the first cylinder for smoke to enter and exit, so that the smoke must pass through the first cylinder during the flow process of flowing from the smoke outlet into the shell and then discharged from the smoke exhaust port, thereby preventing the smoke from flowing into the smoke outlet and escaping to the smoke exhaust port from the gap between the first cylinder and the shell, thereby ensuring that the first cylinder completely processes the smoke and improves the smoke processing efficiency. At the same time, the relative arrangement of the first opening and the second opening on the first cylinder ensures that during the rotation of the first cylinder, one side opening can be set in the half shell directly connected to the smoke outlet, and the other side opening can be set in the half shell directly connected to the smoke exhaust port, thereby ensuring smooth smoke circulation.

[0032] 3. In the range hood provided by the present invention, one end of the first cylinder away from the power unit is connected to the exhaust port, and the exhaust port is arranged on the axis of the first cylinder.

[0033] With this arrangement, on the one hand, during the rotation of the first cylinder, the internal flue gas can be driven to rotate by its own structure or the friction of the inner wall, and the high-temperature oil droplets with larger mass in the flue gas move toward the inner wall of the first cylinder, and the gas with low mass and lower temperature is retained around the middle axis of the first cylinder. By connecting the exhaust port with the first cylinder and arranging it on the axis of the first cylinder, it is convenient for the exhaust port to collect and discharge. On the other hand, the exhaust port is arranged on the side of the first cylinder away from the power unit, which can avoid interference between the exhaust port and the power unit and ensure smooth exhaust.

[0034] 4. The range hood provided by the present invention, the smoke filter part also includes: a smoke guide part, including a plurality of arc-shaped ribs, which are protruded along the inner wall of the first cylinder and evenly distributed in a spiral shape, suitable for guiding the separated gas to the exhaust port.

[0035] By providing the smoke guide part, the first cylinder is enhanced in guiding the internal smoke, the centrifugal speed of the internal smoke is increased, and the centrifugal separation effect of the smoke is improved. At the same time, the smoke guide part includes a number of arc-shaped ribs, which are evenly distributed in a spiral shape, so that the smoke can move along the preset axial direction during the rotation and centrifugal process, so as to facilitate the introduction of the low-temperature air separated by centrifugation into the exhaust port. This arrangement effectively improves the gas separation and gas guide efficiency, thereby improving the gas exchange efficiency of the overall structure.

[0036] 5. The range hood provided by the present invention further includes: a cold air pipe, which is protruding along the direction of the exhaust port toward the inner side of the first cylinder, extends to the inside of the first cylinder, and is coaxial with the first cylinder. The end of the cold air pipe away from the exhaust port is set as a filter end, on which a filter element is provided, and the filter end is adjacent to the end of the first cylinder connected to the power unit.

[0037] By providing a cold air pipe connected to the exhaust port and extending within the first cylinder, with its end adjacent to the power unit, the arcuate ribs allow the flue gas and the cooler gas after centrifugal separation to move in a directional manner, gathering at the end of the first cylinder. The end of the cold air pipe is adjacent to the end of the first cylinder connected to the power unit, effectively ensuring that the cold air flows into the cold air pipe and is discharged from the first cylinder through the exhaust port. Furthermore, the cold air pipe increases the flow path of the cold air, further reducing its temperature and improving the heat exchange efficiency of the entire machine. Furthermore, a filter provided on the cold air pipe prevents oil from entering the exhaust port, ensuring the cleanliness of the discharged air.

[0038] 6. In the range hood provided by the present invention, the arc-shaped rib is arranged in a right-handed manner, and along the direction toward the power unit, the first cylinder is rotated clockwise under the action of the power unit; or, the arc-shaped rib is arranged in a left-handed manner, and along the direction toward the power unit, the first cylinder is rotated counterclockwise under the action of the power unit.

[0039] The right-handed rib body cooperates with the clockwise power part, or the left-handed rib body cooperates with the counterclockwise power part, so that during the rotation of the first cylinder, the internal flue gas is diverted toward the power part, which facilitates the introduction of the cold gas after centrifugal separation into the cold air pipe.

[0040] 7. In the range hood provided by the present invention, the smoke outlet is arranged away from the filtering end.

[0041] The oil smoke that flows in from the smoke outlet and enters the first cylinder through the first opening or the second opening flows toward the side of the power unit under the cooperation of the smoke guide unit and the power unit. The smoke outlet is arranged away from the filter end of the cold air pipe, that is, away from the cold air gathering position in the first cylinder. This can extend the flow path of the oil smoke and cold air, ensure the centrifugal separation effect, avoid the backflow of smoke, and at the same time, avoid the high-temperature oil smoke from being too close to the end of the first cylinder where the cold air gathers, affecting the gathering of the cold air. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0043] Figure 1 A schematic diagram of the three-dimensional structure of a range hood provided in an embodiment of the present invention;

[0044] Figure 2 for Figure 1 The internal structure diagram of the range hood shown;

[0045] Figure 3 for Figure 2 A schematic diagram of the internal structure of the other side of the range hood shown;

[0046] Figure 4 for Figure 2 A schematic diagram of the internal structure of the range hood from another angle is shown;

[0047] Figure 5 for Figure 4 A schematic diagram of the internal structure of the range hood from another angle is shown;

[0048] Figure 6 for Figure 5 A schematic diagram of the three-dimensional structure of the first cylinder of the range hood shown;

[0049] Figure 7 for Figure 6 A schematic diagram of the internal structure of the first cylinder of the range hood shown;

[0050] Figure 8 for Figure 7 The schematic structural diagram of the two ends of the first cylinder of the range hood shown;

[0051] Figure 9 for Figure 1 A schematic diagram of part of the internal structure of the range hood from the perspective of the automatic power unit from one side is shown;

[0052] Figure 10 for Figure 4 A schematic structural diagram of the cooperation between the first position-limiting member and the first position-limiting matching member in the range hood shown;

[0053] Figure 11 for Figure 10 A structural schematic diagram of a first limiting member in a range hood shown;

[0054] Figure 12 for Figure 10 A structural schematic diagram of the first position-limiting fitting in the range hood shown;

[0055] Description of reference numerals:

[0056] 1. Smoke hood; 11. Smoke inlet; 12. Smoke outlet; 13. Volute; 14. Fan assembly; 2. Housing; 21. Smoke outlet; 22. Exhaust port; 23. Partition plate; 24. Cold air duct; 241. Filter element; 25. First stopper; 26. Air guide cavity; 27. Cold air outlet; 28. Air guide plate; 3. Smoke filter unit; 31. First cylinder; 311. First opening; 312. Second opening; 313. Matching hole; 314. Limiting groove; 32. Smoke guide part; 322. Arc-shaped rib; 4. Power part; 41. Power member; 42. Clamping shaft member; 43. Locking member; 44. Second stopper; 5. Angle adjustment assembly; 51. First limiting member; 52. Adjusting drive shaft; 53. Adjusting drive member; 511. Concave arc part; 54. First limiting fitting member; 541. Rotating body; 542. Limiting block; 543. First limiting arc edge; 544. Second limiting arc edge; 6. Detection assembly. DETAILED DESCRIPTION

[0057] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0058] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0059] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0060] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0061] like Figure 1 - Figure 12 As shown, this embodiment provides a range hood, comprising: a smoke collecting hood 1, a shell 2, an air guide device and a smoke exhaust adjustment device.

[0062] The smoke hood 1 has a built-in volute 13 and a fan assembly 14, and the fan assembly 14 includes a motor and a turbine. A smoke inlet 11 with a grille is provided on the lower side of the smoke hood 1, and a smoke outlet 12 is provided on the top side; the shell 2 is connected to the smoke hood 1. In this embodiment, the shell 2 is snap-fitted and arranged on the upper side of the smoke hood 1, and is connected to the smoke outlet 12. A smoke exhaust port 21 and an exhaust port 22 are also provided on the shell 2. Specifically, the smoke exhaust port 21 is arranged on the top of the shell 2 and is connected to the external smoke exhaust pipe. The exhaust port 22 is arranged on the side of the shell 2. Preferably, the exhaust port 22 is arranged in the kitchen and is connected to the installation environment of the range hood.

[0063] The air guide device is arranged inside the shell 2, and includes a power unit 4 and a smoke filter unit 3. The smoke filter unit 3 has a working state in which it performs centrifugal motion under the action of the power unit 4, separates the smoke entering the shell 2 from the smoke outlet 12, and guides the oil smoke to the smoke outlet 21 and the separated clean gas with a lower temperature to the exhaust port 22, and stops the centrifugal rotation.

[0064] The smoke exhaust adjustment device is disposed within the housing 2 and connected to the air guide device, adjusting the amount of smoke guided by the air guide device when the device is not in use. In this embodiment, the smoke exhaust adjustment device adjusts the rotation angle of the smoke filter 3 in the stopped state, thereby correspondingly adjusting the opening of the conductive passage between the smoke outlet 12 and the smoke exhaust port 21, and thereby adjusting the amount of smoke guided by the air guide device. As an alternative embodiment, the smoke exhaust adjustment device can also be a switch member on the smoke outlet 12 or the smoke exhaust port 21, which can correspondingly adjust the opening of the smoke outlet 12 or the smoke exhaust port 21.

[0065] By setting up an air guide device including a power unit 4 and a smoke filter unit 3, the smoke filter unit 3 can perform centrifugal motion under the drive of the power part 41, and the smoke collected by the smoke hood 1 is separated into oil and gas. At the same time, the temperature of the gas separated in the smoke filter unit 3 is reduced by the air flow movement, and the smoke containing a large amount of heat and oil is discharged from the smoke outlet 21, and the relatively low-temperature separated gas is discharged from the exhaust port 22. When the exhaust port 22 is set in a kitchen environment, heat exchange with the hot air in the kitchen environment can be achieved, thereby reducing the kitchen temperature and improving the user's cooking experience. At the same time, by setting up a smoke exhaust adjustment device, the air guide device can be adjusted in the stopped state to ensure that the oil smoke flows smoothly from the smoke outlet 12 to the smoke outlet 21, avoiding the obstruction of the oil smoke when it is in the stopped state. This setting reduces the kitchen temperature while filtering the smoke, does not require additional energy consumption, improves the energy-saving effect of the range hood, and effectively solves the defect of serious energy consumption in the cooling method of the range hood by additionally setting a guide device in the prior art.

[0066] The smoke filter portion 3 includes a first cylinder 31, which is respectively connected to the smoke outlet 12, the smoke exhaust port 21 and the exhaust port 22. The specific shape of the first cylinder 31 is not limited, as long as it can rotate in the circumferential direction under the action of the power unit 4, and can drive the internal smoke to rotate through friction or its own structure, and separate the gas and oil in the smoke. In this embodiment, the first cylinder 31 is arranged in a cylindrical shape, with one axial end open, and the opening is arranged toward the exhaust port 22, and is movably connected to the inner wall of the shell 2, and can rotate relatively. Preferably, it is arranged in a sliding seal and the other end is closed. The center is connected to the power unit 4 and can rotate along the axis under the drive of the power unit 4.

[0067] As a convertible embodiment, the first cylinder 31 can be connected to the power member 41 in a non-axial manner and rotate eccentrically; as another convertible embodiment, the first cylinder 31 can be arranged in sections, and the shapes and inner diameters of different sections are different.

[0068] In this embodiment, a partition plate 23 is provided on the inner wall of the housing 2. The smoke outlet 12 and the smoke exhaust port 21 are located on the lower and upper sides of the partition plate 23. The partition plate 23 comprises two plates, which are provided on the side walls of the housing 2 and extend toward the first cylindrical body 31 in the middle. Specifically, the ends of the partition plates 23 abut against and slide relative to the outer wall of the first cylindrical body 31, forming a circumferential seal. As an alternative embodiment, the ends of the partition plates 23 can also be provided adjacent to the outer wall of the first cylindrical body 31.

[0069] The first barrel 31 is provided with a first opening 311 and a second opening 312 along its sidewall. Furthermore, the first opening 311 is disposed opposite the second opening 312. In this embodiment, the first opening 311 and the second opening 312 are disposed as rectangular slots. As an alternative embodiment, other openings may be further provided along the sidewall of the first barrel 31.

[0070] The smoke exhaust 21 of the second embodiment is a smoke exhaust 21 and a smoke exhaust 21. The smoke exhaust 21 is a smoke exhaust 21 and a smoke exhaust 21. The smoke exhaust 21 is a smoke exhaust 21 and a smoke exhaust 21. The smoke exhaust 21 is a smoke exhaust 21 and a smoke exhaust 21. The smoke exhaust 21 is a smoke exhaust 21 and a smoke exhaust 21.

[0071] The smoke exhaust adjustment device includes: an angle adjustment component 5 and a detection component 6. In this embodiment, the angle adjustment component 5 can adjust the circumferential angle of the air guide device; the detection component 6 is specifically a photoelectric sensor, which is arranged on the inner wall of the housing 2, preferably on the top wall, adjacent to the smoke exhaust port 21, and is electrically connected to the angle adjustment component 5 and the power unit 4, and is suitable for detecting the circumferential rotation angle of the first opening 311 and the second opening 312. Through the electrical connection between the angle adjustment component 5 and the detection component 6, the circumferential angle of the smoke filter 3 can be adjusted by the angle adjustment component 5 according to the position of the first opening 311 and the second opening 312 determined by the detection component 6, so that the first opening 311 and the second opening 312 can be respectively aligned with the smoke outlet 12 and the smoke exhaust port 21, thereby reducing the length of the smoke flow path and facilitating the smooth flow of high-temperature smoke in the stopped state.

[0072] The rotation angle adjustment component includes: a rotation angle adjustment body and a first position-limiting fitting 54 .

[0073] The angle adjustment body is arranged on the housing 2 and is arranged toward the power unit 4, and includes an adjustment drive member 53 and a first limit member 51. The adjustment drive member 53 is specifically a motor, which is electrically connected to the detection component 6;

[0074] The first position-limiting fitting 54 is provided on the output shaft of the power unit 4. The first position-limiting fitting 51 has a position-limiting state in which it rotates toward the first position-limiting fitting 54 under the action of the adjusting drive 53 and engages with the first position-limiting fitting 54, and a disengaged state in which it rotates away from the first position-limiting fitting 54 under the action of the adjusting drive 53 and disengages from the first position-limiting fitting 54. With this arrangement, when the output shaft of the power unit 4 rotates in response to feedback from the detection assembly 6, the first position-limiting fitting 54 moves along with it. By providing the adjusting drive 53, the state of the first position-limiting fitting 51 can be adjusted as needed in response to feedback from the detection assembly 6, switching between the disengaged state and the position-limiting state.

[0075] In this embodiment, one end of the first cylinder 31 away from the power unit 4 is communicated with the exhaust port 22 , and the exhaust port 22 is provided on the axis of the first cylinder 31 .

[0076] With such arrangement, on the one hand, during the rotation process, the first cylinder 31 can drive the internal flue gas to rotate through its own structure or the friction of the inner wall, and the high-temperature oil droplets with larger mass in the flue gas move toward the inner wall of the first cylinder 31, and the low-mass and low-temperature gas is retained around the middle axis of the first cylinder 31. By connecting the exhaust port 22 with the first cylinder 31 and arranging it on the axis of the first cylinder 31, it is convenient for the exhaust port 22 to collect and discharge. On the other hand, the exhaust port 22 is arranged on the side of the first cylinder 31 away from the power unit 4, which can avoid interference between the exhaust port 22 and the power unit 4 and ensure smooth exhaust.

[0077] As a convertible embodiment, the power unit 4 and the exhaust port 22 can be arranged on the same side.

[0078] The smoke filter 3 also includes a smoke guide 32, which includes a plurality of arcuate ribs 322 protruding from the inner sidewall of the first cylindrical body 31 and evenly distributed in a spiral pattern, adapted to guide the separated gas toward the exhaust port 22. As an alternative embodiment, the arcuate ribs 322 may also be unevenly distributed.

[0079] By providing the smoke guide portion 32, the first cylinder 31 is enhanced in guiding the internal smoke, the centrifugal speed of the internal smoke is increased, and the centrifugal separation effect of the smoke is improved. At the same time, the smoke guide portion 32 includes a plurality of arc-shaped ribs 322, which are evenly distributed in a spiral shape, so that the smoke can move along the preset axial direction during the rotation and centrifugal process, so as to facilitate the introduction of the low-temperature air separated by centrifugation into the exhaust port 22. This arrangement effectively improves the gas separation and gas guide efficiency, thereby improving the gas exchange efficiency of the overall structure.

[0080] The range hood also includes a cold air duct 24. While the shape of the duct is not limited, the cold air duct 24 is preferably a straight tube coaxial with the first barrel 31. One end is connected to the exhaust port 22, and the other end protrudes from the exhaust port 22 toward the inside of the first barrel 31, extending into the interior of the first barrel 31. The end of the cold air duct 24, distal from the exhaust port 22, is configured as a filter end, on which is disposed a filter element 241, specifically an oil filter. In this embodiment, the filter end is spaced adjacent to the end of the first barrel 31 connected to the power unit 4.

[0081] By providing a cold air pipe 24 connected to the exhaust port 22 and extending into the first cylinder 31, with its end adjacent to the power unit 4, this arrangement, on the one hand, allows the flue gas and the lower-temperature gas after centrifugal separation in the first cylinder 31 to move in a directional manner, gathering at the end of the first cylinder 31. The end of the cold air pipe 24 is adjacent to the end of the first cylinder 31 connected to the power unit 4, effectively ensuring that the cold gas flows into the cold air pipe 24 and is discharged from the first cylinder 31 through the exhaust port 22. On the other hand, the provision of the cold air pipe 24 increases the flow path of the cold gas, further reducing the temperature of the cold gas and improving the heat exchange efficiency of the entire machine. In addition, the filter 241 provided on the cold air pipe 24 can prevent oil from entering the exhaust port 22, ensuring the cleanliness of the discharged gas.

[0082] As an alternative embodiment, the cold air pipe 24 may not be provided.

[0083] The adjustment drive member includes an adjustment drive body, which is arranged on the cold air pipe 24 and has an adjustment drive shaft 52 parallel to the cold air pipe 24 . The end of the adjustment drive shaft 52 is connected to a first limit member 51 .

[0084] The first limiting fitting 54 includes a rotating body 541 , with a plurality of limiting blocks 542 evenly distributed and protruding along the circumference of the rotating body 541 . Adjacent limiting blocks 542 are arranged vertically, and a first limiting arc edge 543 and a second limiting arc edge 544 are sequentially arranged between the limiting blocks along the circumference. The outer diameter of the first limiting arc edge 543 is larger than the outer diameter of the second limiting arc edge 544 .

[0085] The first limiting member 51 is arranged perpendicular to the adjustment drive shaft 52 , and a concave arc portion 511 is provided at one end thereof away from the adjustment drive shaft. The inner diameter of the concave arc portion 511 is equal to the outer diameter of the second limiting arc edge 544 .

[0086] In this embodiment, the arc-shaped rib 322 is set to be right-handed, and along the direction toward the power unit 4, the first cylinder 31 is rotated clockwise under the action of the power unit 4. As a convertible implementation method, the arc-shaped rib 322 is set to be left-handed, and along the direction toward the power unit 4, the first cylinder 31 is rotated counterclockwise under the action of the power unit 4.

[0087] The right-handed rib body cooperates with the clockwise power part 4, or the left-handed rib body cooperates with the counterclockwise power part 4, so that during the rotation of the first cylinder 31, the internal flue gas is diverted toward the power part 4, which facilitates the introduction of the cold gas after centrifugal separation into the cold air pipe 24.

[0088] As a convertible embodiment, the smoke guiding portion 32 may also be a straight rib or a groove.

[0089] In this embodiment, the smoke outlet 12 is arranged on the top side of the smoke collecting hood 1 and is arranged away from the end of the smoke guiding part 32 in the guiding direction. Specifically, the filter end of the cold air pipe 24 is arranged at the end of the smoke guiding part 32 in the guiding direction.

[0090] The oil smoke flowing in from the smoke outlet 12 and entering the first cylinder 31 through the first opening 311 or the second opening 312 flows toward the side of the power unit 4 under the cooperation of the smoke guide unit 32 and the power unit 4. The smoke outlet 12 is arranged away from the filtering end of the cold air pipe 24, that is, away from the cold air gathering position in the first cylinder 31. This can extend the flow path of the oil smoke and cold air, ensure the centrifugal separation effect, avoid the backflow of smoke, and at the same time, avoid the high-temperature oil smoke from being close to the end of the first cylinder 31 where the cold air gathers, affecting the gathering of the cold air.

[0091] As a changeable embodiment, the first opening 311 and the second opening 312 can be arranged away from the end of the smoke guide portion 32 in the flow direction, that is, the filter end.

[0092] In this embodiment, the power unit 4 includes a power part 41 and a limiting assembly. Specifically, the power part 41 is a driving motor, whose output shaft is coaxially arranged with the axis of the first cylinder 31 and passes through the end of the first cylinder 31; the limiting assembly includes a clamping shaft part 42 and a locking part 43, which are arranged on both sides of the end of the first cylinder 31, connected to the output shaft, and suitable for connecting the limiting output shaft and the first cylinder 31.

[0093] Furthermore, a mating hole 313 is provided at the end of the first cylinder 31 facing the power part 41. The mating hole 313 is provided on the axis of the first cylinder 31. The output shaft passes through the mating hole 313. The mating hole 313 includes a relatively arranged U-shaped limiting groove 314. The clamping shaft part 42 passes through the output shaft and is connected with the limiting groove 314. It can limit the output shaft to prevent it from falling out and ensure the stability of the connection.

[0094] In this embodiment, the locking member 43 and the first position-limiting fitting are integrally provided, which has a simple structure and is easy to manufacture. As a convertible embodiment, they can also be separately provided.

[0095] The range hood further comprises a first stop 25 and a second stop 44 .

[0096] In this embodiment, the second stop 44 is annular and protrudes on the inner wall of the shell 2 in the circumferential direction of the power unit 4. The outer edge of the first cylinder 31 facing one end of the power unit 4 is arranged inside the second stop 44, forming a nested arrangement and limited in the circumferential direction. The two are movably connected and can rotate relative to each other.

[0097] The first stop 25 is opposite to the second stop 44 and is also arranged as an annular convex on the inner wall of the shell 2. It can limit the outer edge of the other end of the first cylinder 31 along the circumferential direction. It is nested and limited along the circumferential direction. The two are movably connected and can rotate relative to each other.

[0098] As a convertible embodiment, the second stop 44 may not be provided, and the first cylinder 31 is supported by the cooperation of the first stop 25 and the limiting assembly.

[0099] The range hood also includes an air guide cavity 26 and air guide plates 28. The air guide cavity 26 is disposed outside the housing 2 and communicates with the exhaust port 22. A cold air outlet 27 is disposed along a side away from the exhaust port 22. Furthermore, the cold air outlet 27 is provided with a plurality of air guide plates 28 to adjust the air outlet direction of the cold air outlet 27.

[0100] In this embodiment, the inner diameter of the exhaust port 22 gradually decreases as it moves away from the first cylinder 31. This arrangement can increase the gas flow rate when the cold air in the first cylinder 31 flows into the air guide cavity 26, thereby improving the user experience.

[0101] In addition, in this embodiment, the motor in the fan assembly 14 and the drive motor of the power unit 4 in the air guide device are independently controlled and are respectively provided with independent switch components. As a convertible implementation method, a controller can also be provided, specifically a single-chip microcomputer or PLC, etc., which are electrically connected to the motor in the fan assembly 14 and the drive motor of the power unit 4 in the air guide device, respectively.

[0102] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications derived therefrom remain within the scope of protection of the present invention.

Claims

1. A range hood, characterized in that: include: A smoke collecting hood (1) is provided with a volute (13) and a fan assembly (14) therein, a smoke inlet (11) being provided on one side and a smoke outlet (12) being provided on the other side; The housing (2) is connected to the smoke collecting hood (1) and communicates with the smoke outlet (12), and is provided with a smoke outlet (21) and an exhaust port (22); An air guide device is arranged in the housing (2), comprising a power unit (4) and a smoke filter unit (3), wherein the smoke filter unit (3) has a working state in which the smoke is centrifugally moved under the action of the power unit (4), the smoke is separated, and the smoke is respectively guided to the smoke outlet (21) and the exhaust port (22), and a stopped state in which the centrifugal rotation is stopped; a smoke exhaust adjustment device, disposed in the housing and adapted to adjust the smoke guide amount of the air guide device in a stopped state; The smoke filter portion (3) comprises: a first cylinder (31), which is respectively connected to the smoke outlet (12), the smoke exhaust port (21) and the exhaust port (22); one end along the axis is connected to the power portion (4); the other end is movably connected to the inner wall of the shell (2), and is suitable for rotating in the circumferential direction under the action of the power portion (4) and separating the smoke; a partition plate (23) is provided on the inner wall of the shell (2); the smoke outlet (12) and the smoke exhaust port (21) are respectively arranged on both sides of the partition plate (23); the partition plate (23) and the first cylinder are connected to each other. The first cylinder (31) is movably connected and circumferentially sealed; a first opening (311) and a second opening (312) are provided along the side wall of the first cylinder (31), and the first opening (311) and the second opening (312) are arranged opposite to each other; the smoke exhaust adjustment device comprises: an angle adjustment component (5) suitable for adjusting the circumferential angle of the air guide device; and a detection component (6) communicatively connected with the angle adjustment component (5) and the power unit (4), and suitable for detecting the circumferential angle of the first opening (311) and the second opening (312).

2. The range hood according to claim 1, characterized in that: The smoke exhaust adjustment device comprises: The detection component (6) is arranged on the inner wall of the housing (2) and is adjacent to the smoke exhaust port (21).

3. The range hood according to claim 2, characterized in that: The angle adjustment component includes: An angle adjustment body is provided on the housing (2) and is arranged toward the power unit (4), and comprises an adjustment drive member (53) and a first limit member (51), wherein the adjustment drive member (53) is communicatively connected to the detection assembly (6); A first position-limiting fitting (54) is provided on the output shaft of the power unit (4). The first position-limiting fitting (51) has a position-limiting state in which it rotates toward the first position-limiting fitting (54) under the action of the adjusting drive (53) and is engaged with the first position-limiting fitting (54), and a disengaged state in which it rotates away from the first position-limiting fitting (54) under the action of the adjusting drive (53) and is disengaged from the first position-limiting fitting (54).

4. The range hood according to claim 1, characterized in that: One end of the first cylinder (31) away from the power unit (4) is communicated with the exhaust port (22), and the exhaust port (22) is arranged on the axis of the first cylinder (31).

5. The range hood according to any one of claims 2 to 4, characterized in that: The smoke filter unit (3) further comprises: The smoke guide portion (32) includes a plurality of arc-shaped ribs (322) protruding along the inner wall of the first cylinder (31) and evenly distributed in a spiral shape, suitable for guiding the separated gas to the exhaust port (22).

6. The range hood according to claim 5, characterized in that: Also includes: The cold air pipe (24) is protrudingly arranged along the direction from the exhaust port (22) toward the inner side of the first cylinder (31), extending to the interior of the first cylinder (31), and being coaxial with the first cylinder (31). The end of the cold air pipe (24) away from the exhaust port (22) is arranged as a filter end, on which a filter element (241) is arranged. The filter end is arranged adjacent to an end of the first cylinder (31) connected to the power unit (4).

7. The range hood according to claim 6, characterized in that: The adjustment drive includes: An adjustment drive body is provided on the cold air pipe (24), and an adjustment drive shaft (52) parallel to the cold air pipe (24) is provided on the body, and a first position-limiting member (51) is connected to the end of the adjustment drive shaft (52).

8. The range hood according to claim 7, characterized in that: The first limiting fitting (54) includes a rotating body (541), a plurality of limiting blocks (542) are evenly distributed and protruded along the circumference of the rotating body (541), adjacent limiting blocks (542) are arranged vertically, and a first limiting arc edge (543) and a second limiting arc edge (544) are sequentially arranged between the limiting blocks (542) along the circumference, and the outer diameter of the first limiting arc edge (543) is larger than the outer diameter of the second limiting arc edge (544); The first limiting member (51) is arranged perpendicular to the adjusting drive shaft (52), and a concave arc portion (511) is provided at one end thereof away from the adjusting drive shaft (52), and the inner diameter of the concave arc portion (511) is equal to the outer diameter of the second limiting arc edge (544).

9. The range hood according to claim 5, characterized in that: The arc-shaped rib (322) is arranged in a right-handed manner and is arranged in a direction toward the power unit (4). The first cylinder (31) is arranged to rotate clockwise under the action of the power unit (4); or, The arc-shaped rib (322) is arranged in a left-handed manner and is arranged in a direction toward the power unit (4). The first cylinder (31) is arranged to rotate counterclockwise under the action of the power unit (4).

10. The range hood according to claim 6, characterized in that: The smoke outlet (12) is arranged away from the filter end.

11. The range hood according to any one of claims 1-4, 6-10, characterized in that: The power unit (4) includes: A power member (41), the output shaft of which is coaxially arranged with the axis of the first cylinder (31) and passes through the end of the first cylinder (31); The limiting assembly includes a clamping shaft member (42) and a locking member (43), which are respectively arranged on both sides of the end of the first cylinder (31), connected to the output shaft, and suitable for connecting and limiting the output shaft and the first cylinder (31).

12. The range hood according to claim 11, characterized in that: The locking member (43) and the first position-limiting fitting member (54) are integrally arranged.

13. The range hood according to claim 11, characterized in that: A matching hole (313) is provided at the end of the first cylinder (31), and the matching hole (313) is arranged on the axis of the first cylinder (31). The output shaft passes through the matching hole (313), and the matching hole (313) includes a relatively arranged limiting groove (314). The clamping shaft (42) passes through the output shaft and is matched with the limiting groove (314).

14. The range hood according to any one of claims 1-4, 6-10, 12-13, characterized in that: Also includes: A second stop (44) is protrudingly provided on the circumference of the power unit (4), adapted to limit one end of the first cylinder (31) along the circumferential direction and movably connected thereto; The first stop (25), opposite to the second stop (44), is arranged on the inner wall of the shell (2), suitable for limiting the other end of the first cylinder (31) along the circumferential direction and being movably connected thereto.

15. The range hood according to any one of claims 1-4, 6-10, 12-13, characterized in that: Also includes: An air guide cavity (26) is arranged outside the housing (2) and communicates with the exhaust port (22), and a cold air port (27) is provided along a side away from the exhaust port (22); An air guide plate (28) is provided on the cold air outlet (27) and is suitable for adjusting the air outlet direction of the cold air outlet (27).

16. The range hood according to claim 15, characterized in that: The inner diameter of the exhaust port (22) gradually decreases in a direction away from the first cylinder (31).

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