A range hood

Abstract

The range hood provided by the present invention comprises: a smoke 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 hood and in communication with the smoke outlet, and respectively provided with a smoke outlet, an exhaust outlet and a heat exhaust outlet, wherein the heat exhaust outlet is provided with a heat exhaust filter; an air guide device arranged in the housing, comprising a power unit and a smoke filter unit, wherein the smoke filter unit has a first exhaust state in which, under the action of the power unit, it performs centrifugal motion along a first rotation direction to separate smoke and guide the smoke to the smoke outlet and the exhaust outlet respectively, and a second exhaust state in which, under the action of the power unit, it moves along a second rotation direction and guides the smoke to the heat exhaust outlet. This effectively solves the defects of the prior art in that the cooling method of the range hood provided with an additional guide device has serious energy consumption and poor cooking experience for users at different times.

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. In summer, the high temperature cooking environment in the kitchen reduces the user's cooking experience, while in winter, the cooking environment in the kitchen cannot effectively heat the entire kitchen space, resulting in local imbalance of cold and heat.

[0003] With the improvement of modern living standards, range hoods have gradually entered the kitchens of countless households, enhancing the user's cooking experience. Existing technologies often incorporate fans and other air-guiding devices into range hoods to assist in adjusting the kitchen temperature. However, such devices consume a lot of energy, hindering the energy conservation and environmental protection of range hoods, and making it difficult to guarantee a consistent cooking experience for users at different times. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the existing technology of the temperature control method of additionally arranging a guide device on the range hood, which has serious energy consumption and poor cooking experience for users at different times, 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, an exhaust port and a heat exhaust port, wherein the heat exhaust port is provided with a heat exhaust filter; an air guide device, arranged in the shell body, comprising a power part and a smoke filter part, the smoke filter part having a first exhaust state in which, under the action of the power part, it performs centrifugal motion along a first rotation direction to separate the smoke and guide the smoke to the smoke outlet and the exhaust port respectively, and a second exhaust state in which, under the action of the power part, it performs centrifugal motion along a second rotation direction to guide the smoke to the heat exhaust port.

[0006] The smoke filter unit includes: a first cylinder, which is respectively connected to the smoke outlet, smoke exhaust port, exhaust port and heat 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 in the circumferential direction under the action of the power unit and separating or diverting 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] One end of the first cylinder away from the power unit is communicated with the exhaust port and the heat exhaust port, and the exhaust port is arranged on the axis of the first cylinder.

[0010] The smoke filter 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 or guiding the unseparated smoke to the heat exhaust port.

[0011] 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 unit. The heat exhaust port and the exhaust port are set on the same side of the first cylinder, and the heat exhaust port is set along the circumference of the exhaust port.

[0012] 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.

[0013] or,

[0014] 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.

[0015] The range hood further includes: an opening and closing unit, which is arranged on the shell and on the same side as the heat exhaust port and the exhaust port, and includes an opening and closing cover and an opening and closing drive component, the opening and closing drive component is communicatively connected to the power unit, and the opening and closing cover has a first movement position in which the exhaust port is opened and the heat exhaust port is blocked under the drive of the opening and closing drive component, and a second movement position in which the exhaust port is blocked and the heat exhaust port is opened.

[0016] The smoke outlet is arranged away from the filter end.

[0017] 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.

[0018] 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.

[0019] 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.

[0020] 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 the heat exhaust port, and an exhaust port is arranged along the side away from the exhaust port; an air guide plate, which is arranged on the exhaust port and is suitable for adjusting the air outlet direction of the exhaust port.

[0021] The range hood also includes: a short cold air pipe, which is arranged on the inner wall of the air guide cavity, is coaxial with the exhaust port and is spaced apart, is suitable for receiving the air out of the exhaust port and avoiding the opening and closing unit, and a cold air opening is provided on the side wall of the cold air short pipe, the cold air opening is adjacent to the inner wall of the air guide cavity, and is opened toward the exhaust port.

[0022] The inner diameter of the exhaust port gradually decreases in a direction away from the first cylinder.

[0023] The technical solution of the present invention has the following advantages:

[0024] 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, an air outlet and a heat outlet, wherein the heat outlet is provided with a heat exhaust filter; an air guide device being arranged in the shell, comprising a power part and a smoke filter part, the smoke filter part having a first exhaust state in which, under the action of the power part, it performs centrifugal motion in a first rotation direction to separate the smoke and guide the smoke to the smoke outlet and the exhaust outlet respectively, and a second exhaust state in which, under the action of the power part, it performs centrifugal motion in a second rotation direction to guide the smoke to the heat outlet.

[0025] By setting up an air guide device including a power part and a smoke filter part, the smoke filter part can perform centrifugal motion under the drive of the power part, and the smoke collected in the smoke hood can be separated from the oil and gas. At the same time, the temperature of the gas separated in the smoke filter part is reduced by the airflow movement, and the smoke containing a large amount of heat and oil is discharged from the smoke exhaust port, 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. In addition, you can also choose to rotate the smoke filter part in the opposite direction to directly transport the smoke to the heat exhaust port, isolate the dirt in the smoke through the heat exhaust filter, and directly discharge the hot air. When the exhaust port is set in the kitchen environment, auxiliary heating of the kitchen environment can be achieved, the temperature of the kitchen in different positions can be increased, the kitchen environment temperature can be effectively adjusted, and the user's cooking experience in cold environments such as winter can be improved. This setting can effectively adjust the kitchen temperature without additional energy consumption, improve the energy-saving effect of the range hood, and improve the cooking experience of users at different times. It effectively solves the defects of the existing technology of the temperature adjustment method of additionally setting a diversion device on the range hood, which has serious energy consumption and poor cooking experience for users at different times.

[0026] 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.

[0027] 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.

[0028] 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 heat exhaust port, and the exhaust port is arranged on the axis of the first cylinder.

[0029] 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 and the heat exhaust port are arranged on the side of the first cylinder away from the power unit, which can avoid interference between the exhaust port, the heat exhaust port and the power unit, thereby ensuring smooth exhaust and heat exhaust.

[0030] 4. The range hood provided by the present invention, the smoke filter portion further includes: a smoke guide portion, including a plurality of arc-shaped ribs, which are protruding along the inner side wall of the first cylinder and are evenly distributed in a spiral shape, suitable for guiding the separated gas to the exhaust port, or guiding the unseparated smoke to the heat exhaust port.

[0031] 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, the centrifugal separation effect of the smoke and the smoke guidance efficiency are improved. At the same time, the smoke guide part includes a plurality of arc-shaped ribs, which are evenly distributed in a spiral shape. The smoke can be accumulated and discharged at one end of the axis position during the rotation and centrifugal process, and the smoke can be driven to move directly in a preset axial direction, so as to facilitate the introduction of the smoke into the heat exhaust port. This arrangement effectively improves the gas separation and gas guidance efficiency, thereby improving the gas exchange efficiency of the overall structure.

[0032] 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, the filter end is adjacent to the end of the first cylinder connected to the power unit, the heat exhaust port and the exhaust port are set on the same side of the first cylinder, and the heat exhaust port is set along the circumference of the exhaust port.

[0033] By providing a cold air pipe connected to the exhaust port and extending it into the first cylinder, with its end adjacent to the power unit, on the one hand, the arrangement of the arc-shaped ribs causes the flue gas in the first cylinder and the gas with lower temperature after centrifugal separation to move in a directional manner and gather 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, which can effectively ensure that the cold gas flows into the cold air pipe and is discharged from the first cylinder through the exhaust port. At the same time, after the first cylinder rotates in the opposite direction, it can drive the hot flue gas to move in a directional manner in the other direction and be discharged from the first cylinder through the heat exhaust port. On the other hand, the arrangement of the cold air pipe increases the flow path of the cold gas, further reduces the temperature of the cold gas, and improves the heat exchange efficiency of the entire machine. In addition, the filter provided on the cold air pipe can prevent oil from entering the exhaust port, ensuring the cleanliness of the discharged gas.

[0034] 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.

[0035] 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 when the first cylinder rotates, the internal flue gas is diverted toward the power part, which is convenient for introducing the cold gas after centrifugal separation into the cold air pipe. At the same time, when rotating in the opposite direction, it can still drive the hot flue gas to move to the heat exhaust port.

[0036] 7. In the range hood provided by the present invention, the smoke outlet is arranged away from the filtering end.

[0037] 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

[0038] 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.

[0039] Figure 1A schematic diagram of the three-dimensional structure of a range hood provided in an embodiment of the present invention;

[0040] Figure 2 for Figure 1 The internal structure diagram of the range hood shown;

[0041] Figure 3 for Figure 2 A schematic diagram of the internal structure of the other side of the range hood shown;

[0042] Figure 4 for Figure 2 A schematic diagram of the internal structure of the range hood from another angle is shown;

[0043] Figure 5 for Figure 1 The schematic diagram of the three-dimensional structure of the opening and closing unit of the range hood shown is in the first movement position;

[0044] Figure 6 for Figure 1 The schematic diagram of the three-dimensional structure of the opening and closing unit of the range hood shown is in the second movement position;

[0045] Figure 7 for Figure 1 A schematic structural diagram of the first cylinder of the range hood shown;

[0046] Figure 8 for Figure 7 A schematic diagram of the internal structure of the first cylinder of the range hood shown;

[0047] Figure 9 for Figure 7 The schematic structural diagram of the two ends of the first cylinder of the range hood shown;

[0048] Description of reference numerals:

[0049] 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. Cooling pipe; 241. Filter element; 25. First stop; 26. Air guide cavity; 261. Cooling short pipe; 262. Cooling opening; 27. Exhaust port; 28. Air guide plate; 29. ​​Heat exhaust port; 291. Heat exhaust filter element; 3. Smoke filter unit; 31. First cylinder; 311. First opening; 312. Second opening; 313. Matching hole; 314. Limiting groove; 32. Smoke guide unit; 322. Arc-shaped rib; 4. Power unit; 41. Power part; 42. Clamping shaft part; 43. Locking part; 44. Second stop; 5. Opening and closing unit; 51. Opening and closing cover plate; 52. Opening and closing drive part. DETAILED DESCRIPTION

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] like Figure 1 - Figure 9 As shown, this embodiment provides a range hood, comprising: a fume collecting hood 1, a shell 2 and an air guide device.

[0055] 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 on the upper side of the smoke hood 1 and is connected to the smoke outlet 12. A smoke exhaust port 21, a heat exhaust port 29 and an exhaust port 22 are also provided on the shell 2. Specifically, the smoke exhaust port 21 is provided on the top of the shell 2 and is connected to the external smoke exhaust pipe. The heat exhaust port 29 is provided on the side of the shell 2, and a heat exhaust filter 291 is provided thereon, which is specifically in the form of a filter net. The exhaust port 22 is also provided on the side of the shell 2. Preferably, the exhaust port 22 is provided in the kitchen and is connected to the installation environment of the range hood.

[0056] The air guide device is disposed within the housing 2 and includes a power unit 4 and a smoke filter 3. In a first exhaust state, the smoke filter 3 undergoes centrifugal motion under the action of the power unit 4, separating the smoke entering the housing 2 from the smoke outlet 12 and directing the oil smoke to the smoke outlet 21 and the separated, cooler clean gas to the exhaust outlet 22. In a second exhaust state, the smoke filter 3 moves in a second rotational direction under the action of the power unit 4, directing the smoke to the heat exhaust outlet 29. In this embodiment, the first and second rotational directions are opposite.

[0057] By setting up an air guide device including a power part 4 and a smoke filter part 3, the smoke filter part 3 can perform centrifugal motion under the drive of the power part 41, and separate the oil and gas from the smoke collected by the smoke hood 1. At the same time, the temperature of the gas separated in the smoke filter part 3 is reduced by the airflow movement, and the smoke containing a large amount of heat and oil is discharged from the smoke exhaust port 21, and the relatively low-temperature separated gas is discharged from the exhaust port 22. When the exhaust port 22 is set in the 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; in addition, the smoke filter part 3 can be rotated in the opposite direction to directly transport the smoke to the heat exhaust port 29, and the dirt in the smoke can be isolated through the heat exhaust filter element 291, and the hot air can be directly discharged. When the exhaust port 22 is set in the kitchen environment, auxiliary heating of the kitchen environment can be achieved, the temperature of the kitchen in different positions can be increased, the kitchen environment temperature can be effectively adjusted, and the user's cooking experience in cold environments such as winter can be improved. This setting can effectively adjust the kitchen temperature without additional energy consumption, improve the energy-saving effect of the range hood, and improve the cooking experience of users at different times. It effectively solves the defects of the existing technology of the temperature adjustment method of additionally setting a diversion device on the range hood, which has serious energy consumption and poor cooking experience for users at different times.

[0058] The smoke filter portion 3 includes a first cylinder 31, which is respectively connected to the smoke outlet 12, the smoke exhaust port 21, the exhaust port 22 and the heat exhaust port 29. The specific shape of the first cylinder 31 is not limited, and 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, and can also directly guide the smoke. In this embodiment, the first cylinder 31 is arranged in a cylindrical shape, with an 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 driven by the power unit 4.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] The end of the first cylinder 31 away from the power unit 4 is connected to the exhaust port 22 and the heat exhaust port 29. The exhaust port 22 is arranged on the axis of the first cylinder 31. In this embodiment, the heat exhaust port 29 is arranged along the circumferential side of the exhaust port 22, and can also be arranged on a different side from the exhaust port 22.

[0064] 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 and the heat exhaust port 29 are arranged on the side of the first cylinder 31 away from the power unit 4, which can avoid interference between the exhaust port 22, the heat exhaust port 29 and the power unit 4, thereby ensuring smooth exhaust and heat dissipation.

[0065] As a convertible embodiment, the power unit 4 and the exhaust port 22 can be arranged on the same side.

[0066] The smoke filter 3 also includes a smoke guide 32, which comprises a plurality of arcuate ribs 322 protruding from the inner sidewall of the first cylindrical body 31 and evenly distributed in a spiral pattern. These ribs are adapted to guide separated gas toward the exhaust port 22 or unseparated smoke toward the heat exhaust port 29. As an alternative embodiment, the arcuate ribs 322 may also be unevenly distributed.

[0067] 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. The smoke can be accumulated and discharged at one end of the axis position during the rotation and centrifugal process, and the smoke can be driven to move directly in a preset axial direction, so as to facilitate the introduction of the smoke into the heat exhaust port. This arrangement effectively improves the gas separation and gas guide efficiency, thereby improving the gas exchange efficiency of the overall structure.

[0068] The range hood also includes a cold air pipe 24. The shape of the pipe is not limited. Preferably, the cold air pipe 24 is arranged as a straight pipe, coaxial with the first cylinder 31, with one end connected to the exhaust port 22, and the other end protruding along the exhaust port 22 toward the inside of the first cylinder 31, and extending to the inside of 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, specifically an oil filter net. In this embodiment, the filtering density of the filter element 241 is less than the filtering density of the heat exhaust filter element 291. The filtering end and the end of the first cylinder 31 connected to the power unit 4 are adjacent and spaced apart. The heat exhaust port 29 and the exhaust port 22 are arranged on the same side of the first cylinder 31, and the heat exhaust port 29 is arranged along the circumference of the exhaust port 22.

[0069] 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, the arrangement of the arcuate ribs 322 allows the flue gas and the lower-temperature gas after centrifugal separation in the first cylinder 31 to move in a directional manner and gather 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. At the same time, after the first cylinder 31 rotates in the opposite direction, it can drive the hot flue gas to move in a directional manner in the other direction and be discharged from the first cylinder 31 through the heat exhaust port 29. On the other hand, the arrangement of the cold air pipe 24 increases the flow path of the cold gas, further reduces the temperature of the cold gas, and improves 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.

[0070] As an alternative embodiment, the cold air pipe 24 may not be provided.

[0071] 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.

[0072] The right-handed rib body cooperates with the clockwise power unit 4, or the left-handed rib body cooperates with the counterclockwise power unit 4, so that when the first cylinder 31 rotates, the internal flue gas is diverted in the direction of the power unit 4, which is convenient for introducing the cold gas after centrifugal separation into the cold air pipe 24. At the same time, when rotating in the opposite direction, it can still drive the hot flue gas to move to the heat exhaust port 29.

[0073] As a convertible embodiment, the smoke guiding portion 32 may also be a straight rib or a groove.

[0074] The opening and closing unit 5 is arranged on the shell 2 and is arranged on the same side as the heat exhaust port 29 and the exhaust port 22, including an opening and closing cover plate 51 and an opening and closing drive member 52. The opening and closing drive member 52 is specifically an electric push rod, and can also be a drive motor or a drive cylinder. It is electrically connected to the power unit 4 and can determine its opening and closing movement position according to the rotation direction of the first cylinder 31 driven by the power unit. The shape of the opening and closing cover plate 51 is not limited, and it is sufficient to have a first movement position of opening the exhaust port 22 and blocking the heat exhaust port 29 under the drive of the opening and closing drive member 52, and a second movement position of blocking the exhaust port 22 and opening the heat exhaust port 29. In this example, it is specifically in the shape of a semi-hexagonal plate, and the heat exhaust port 29 is in the shape of a hexagonal ring distributed circumferentially along the exhaust port 22.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] The range hood further comprises a first stop 25 and a second stop 44 .

[0081] 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.

[0082] 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.

[0083] 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.

[0084] The range hood also includes an air guide cavity 26 and air guide plates 28. The air guide cavity 26 is located outside the housing 2 and communicates with the exhaust port 22 and the heat exhaust port 29. An exhaust port 27 is located on the side away from the exhaust port 22. Furthermore, several air guide plates 28 are provided on the exhaust port 27 to adjust the airflow direction of the exhaust port 27.

[0085] 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.

[0086] 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.

[0087] Furthermore, the air guide cavity 26 also includes a cold air short tube 261, which is arranged on the inner wall of the air guide cavity 26, coaxial with the exhaust port 22 and spaced apart. Such an arrangement can receive the air outlet of the exhaust port 22 and avoid the opening and closing unit 5, so as to prevent the opening and closing cover 51 from colliding with the cold air short tube 261 during movement. A cold air opening 262 is provided on the lower side wall of the cold air short tube 261, and the cold air opening 262 is adjacent to the inner wall of the air guide cavity 26, and is opened toward the exhaust port 27.

[0088] Preferably, the inner diameter of the cold air short tube 261 is equal to the inner diameter of the air outlet end of the exhaust port 22, so that the speed of the cold air flowing to the air guide cavity 26 will not be reduced, and it is convenient for the cold air to flow to the exhaust port 27 through the cold air opening 262 below the cold air short tube 261.

[0089] 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 communicated with the smoke outlet (12), and is respectively provided with a smoke outlet (21), an air outlet (22) and a heat exhaust outlet (29), wherein the heat exhaust outlet (29) is provided with a heat exhaust filter (291); 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 first exhaust state in which it performs centrifugal motion along a first rotation direction under the action of the power unit (4), separates smoke, and guides the smoke to the smoke exhaust port (21) and the exhaust port (22) respectively, and a second exhaust state in which it performs centrifugal motion along a second rotation direction under the action of the power unit (4), and guides the smoke to the heat exhaust port (29); The smoke filter unit (3) comprises: a first cylinder (31), which is respectively connected to the smoke outlet (12), the smoke exhaust port (21), the exhaust port (22) and the heat exhaust port (29), one end of which is connected to the power unit (4) along the axis, and 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 unit (4) and separating or guiding the smoke; the end of the first cylinder (31) away from the power unit (4) is connected to the exhaust port (22) and the heat exhaust port (29), and the exhaust port (22) is connected to the heat exhaust port (29). ) is arranged on the axis of the first cylinder (31); the smoke filter portion (3) further includes: a smoke guide portion (32), including a plurality of arc-shaped ribs (322), which are protrudingly arranged 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) or guiding the unseparated smoke to the heat exhaust port (29); the heat exhaust port (29) and the exhaust port (22) are arranged on the same side of the first cylinder (31), and the heat exhaust port (29) is arranged along the circumference of the exhaust port (22).

2. The range hood according to claim 1, characterized in that: 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), and the partition plate (23) is movably connected to the first cylinder (31) and is circumferentially sealed. The first cylinder (31) is provided with a first opening (311) and a second opening (312) along the side wall, and the first opening (311) and the second opening (312) are arranged opposite to each other.

3. The range hood according to claim 1 or 2, 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).

4. The range hood according to claim 3, 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).

5. The range hood according to claim 3, characterized in that: Also includes: An opening and closing unit (5) is provided on the housing (2) and is arranged on the same side as the heat exhaust port (29) and the exhaust port (22), and comprises an opening and closing cover plate (51) and an opening and closing driving member (52). The opening and closing driving member (52) is communicatively connected to the power unit (4). The opening and closing cover plate (51) has a first movement position in which the exhaust port (22) is opened and the heat exhaust port (29) is blocked under the driving of the opening and closing driving member (52), and a second movement position in which the exhaust port (22) is blocked and the heat exhaust port (29) is opened.

6. The range hood according to any one of claims 4 to 5, characterized in that: The smoke outlet (12) is arranged away from the filter end.

7. The range hood according to any one of claims 1-2, 4-5, 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).

8. The range hood according to claim 7, 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).

9. The range hood according to any one of claims 1-2, 4-5, and 8, 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.

10. The range hood according to any one of claims 1-2, 4-5, and 8, characterized in that: Also includes: An air guide cavity (26) is arranged outside the housing (2), is communicated with the exhaust port (22) and the heat exhaust port (29), and is provided with an exhaust port (27) along a side away from the exhaust port (22); The air guide plate (28) is arranged on the air outlet (27) and is suitable for adjusting the air outlet direction of the air outlet (27).

11. The range hood according to claim 10, characterized in that: Also includes: A cold air short pipe (261) is arranged on the inner wall of the air guide cavity (26), coaxial with the exhaust port (22) and spaced apart, suitable for receiving the air outlet of the exhaust port (22) and avoiding the opening and closing unit (5); a cold air opening (262) is provided on the side wall of the cold air short pipe (261), the cold air opening (262) is adjacent to the inner wall of the air guide cavity (26), and is opened toward the exhaust port (27).

12. The range hood according to claim 11, 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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