Smoke gathering device, smoke gathering method and kitchen appliance

Abstract

The invention discloses a smoke gathering device, a smoke gathering method and a kitchen appliance, and belongs to the technical field of household appliances, the smoke gathering device comprises a first smoke collecting hood and a second smoke collecting hood, the first smoke collecting hood is provided with a first smoke collecting cavity, and a first air inlet is formed in the first smoke collecting hood; at least part of the second exhaust fume collecting hood is arranged in the first exhaust fume collecting cavity, a plurality of second air inlets communicating with the first exhaust fume collecting cavity are formed in the second exhaust fume collecting hood in the circumferential direction at intervals, and the air inlet areas of at least two second air inlets are different. And the second exhaust fume collecting hood is rotationally connected with the first exhaust fume collecting hood, so that different second air inlets are communicated with the outside. The smoke gathering method adopts the smoke gathering device and comprises the steps that the oil smoke concentration is obtained, the needed air inlet area is determined according to the oil smoke concentration, and the rotating angle of the second smoke collecting hood is adjusted according to the air inlet area so that the corresponding second air inlet can communicate with the outside and the first smoke collecting cavity. The kitchen appliance comprises a machine shell and the smoke gathering device.

Description

Technical Field

[0001] This invention relates to the field of home appliance technology, and in particular to a smoke collection device, a smoke collection method, and a kitchen appliance. Background Technology

[0002] Common kitchen appliances such as range hoods and integrated cooktops have smoke extraction functions. Their smoke extraction principle utilizes aerodynamics; a motor drives an impeller to rotate, expelling air from inside the volute and creating negative pressure. Atmospheric pressure then draws in cooking fumes from the kitchen space through the air inlet, and finally exhausts them outdoors through ducts and exhaust pipes. Traditional range hoods typically have a fixed air inlet at the front of the smoke collection hood, which cannot accommodate varying concentrations of cooking fumes, resulting in poor smoke extraction. Summary of the Invention

[0003] This invention provides a smoke collection device, a smoke collection method, and a kitchen appliance to solve the technical problem of poor smoke extraction caused by a fixed air inlet area in the prior art.

[0004] Based on the above concept, the technical solution adopted by this invention is as follows:

[0005] A smoke collection device, comprising:

[0006] The first smoke hood has a first smoke collection chamber and a first air inlet is provided on the first smoke hood;

[0007] The second smoke hood is at least partially disposed within the first smoke collection chamber. The second smoke hood has a plurality of second air inlets that communicate with the first smoke collection chamber at circumferential intervals. At least two of the second air inlets have different air inlet areas. The second smoke hood is rotatably connected to the first smoke hood so that different second air inlets communicate with the outside.

[0008] Preferably, the second air inlet extends in a long strip shape, and the width of each second air inlet increases in an arithmetic sequence from small to large.

[0009] Preferably, the second smoke hood is provided with a filter screen that covers the second air inlet; and / or, a rectifier screen is provided circumferentially on the outer side of the second smoke hood, the rectifier screen being spaced apart from the second smoke hood.

[0010] Preferably, the second smoke hood has an arc-shaped structure, the second smoke hood can rotate around its own first axis, and the second air inlet extends parallel to the first axis.

[0011] Preferably, a portion of the second smoke hood protrudes from the first air inlet, and the second air inlet communicating with the outside is located in the protruding portion of the second smoke hood.

[0012] Preferably, the first smoke hood has an arc-shaped protrusion around the first air inlet, and the protrusion extends along the outer periphery of the second smoke hood to guide the airflow to adhere to the outer surface of the second smoke hood.

[0013] Preferably, at least one end of the second smoke hood along the axial direction is provided with an air inlet that communicates with the first smoke collection chamber.

[0014] Preferably, the system also includes a cleaning assembly, which includes a cleaning brush and a first driving member. The cleaning brush contacts the surface of the second smoke collection hood, and the first driving member is used to drive the cleaning brush to rotate.

[0015] Preferably, the cleaning brush is provided in at least two sets, with at least one set of cleaning brushes located on the outside of the second smoke collection hood and in contact with the outer surface of the second smoke collection hood, and at least one set of cleaning brushes located on the inside of the second smoke collection hood and in contact with the inner surface of the second smoke collection hood.

[0016] Preferably, the cleaning assembly further includes a water pump for spraying water onto the cleaning brush.

[0017] Preferably, the first smoke collection chamber is provided with a cleaning tank for holding cleaning liquid. The smoke collection device also includes a second driving member for driving the second smoke collection hood to move synchronously with the cleaning brush to immerse in or detach from the cleaning liquid.

[0018] Preferably, a first mounting plate is provided inside the first smoke collection chamber, and the second smoke collection hood and the cleaning brush are both disposed on the first mounting plate. The first mounting plate is slidably connected to the first smoke collection hood, and the second driving member can drive the first mounting plate to slide so that the second smoke collection hood and the cleaning brush are simultaneously immersed in or detached from the cleaning liquid.

[0019] Preferably, the interior of the second smoke hood forms a second smoke collection chamber that communicates with the first smoke collection chamber, the second air inlet communicates with the second smoke collection chamber, and a guide duct is provided inside the second smoke collection chamber to guide the airflow in the second smoke collection chamber into the first smoke collection chamber.

[0020] Preferably, the first smoke hood includes a side plate structure with a third air inlet. The side plate structure includes a fixed side plate and a movable side plate. The movable side plate is movable relative to the fixed side plate so that the third air inlet selectively connects to the outside world and the first smoke collection chamber.

[0021] A smoke collection method, employing the smoke collection device described above, includes: acquiring the oil fume concentration, determining the required air inlet area based on the oil fume concentration, and adjusting the rotation angle of the second smoke collection hood according to the air inlet area so that the corresponding second air inlet connects to the outside and the first smoke collection chamber.

[0022] A kitchen appliance includes a housing and a smoke collection device as described above, wherein a first smoke collection hood is connected to the housing.

[0023] The beneficial effects of this invention are:

[0024] The smoke collection device proposed in this invention includes a first smoke collection hood and a second smoke collection hood. The first smoke collection hood has a first smoke collection chamber and a first air inlet. At least a portion of the second smoke collection hood is disposed within the first smoke collection chamber. The second smoke collection hood has multiple second air inlets that communicate with the first smoke collection chamber, arranged circumferentially. By making full use of the circumferential area of ​​the second smoke collection hood, not only can a large number of second air inlets be provided, but the volume occupied is also small. At least two of the second air inlets have different air inlet areas. The second smoke collection hood is rotatably connected to the first smoke collection hood so that different second air inlets can communicate with the outside. By rotating the second smoke collection hood, second air inlets with different air inlet areas can be selected, which is convenient for adjustment to adapt to different oil fume environments. Attached Figure Description

[0025] Figure 1 This is a front view of the kitchen appliance provided in Embodiment 1 of the present invention;

[0026] Figure 2 This is a first side view of the kitchen appliance provided in Embodiment 1 of the present invention;

[0027] Figure 3 This is a second side view of the kitchen appliance provided in Embodiment 1 of the present invention;

[0028] Figure 4 This is a front view of the second smoke hood provided in Embodiment 1 of the present invention;

[0029] Figure 5 This is a side view of the second smoke hood provided in Embodiment 1 of the present invention;

[0030] Figure 6 This is a schematic diagram of the unfolded second smoke hood provided in Embodiment 1 of the present invention;

[0031] Figure 7 This is a third side view of the kitchen appliance provided in Embodiment 1 of the present invention;

[0032] Figure 8 yes Figure 7 Enlarged view of point A;

[0033] Figure 9This is a schematic diagram of the second smoke hood and cleaning brush detached from the cleaning fluid according to Embodiment 1 of the present invention;

[0034] Figure 10 This is a schematic diagram of the second smoke hood and cleaning brush provided in Embodiment 1 of the present invention being immersed in cleaning fluid;

[0035] Figure 11 This is a schematic diagram of the second driving component and the second smoke collection hood provided in Embodiment 1 of the present invention;

[0036] Figure 12 This is a schematic diagram of the second smoke hood, the first mounting plate, and the cleaning brush provided in Embodiment 1 of the present invention;

[0037] Figure 13 This is a schematic diagram of the first mounting plate and the second mounting plate cooperating according to Embodiment 1 of the present invention;

[0038] Figure 14 This is a front view of the kitchen appliance provided in Embodiment 2 of the present invention;

[0039] Figure 15 This is a side sectional view of the kitchen appliance provided in Embodiment 2 of the present invention;

[0040] Figure 16 This is a partial structural cross-sectional view of the kitchen appliance provided in Embodiment 2 of the present invention;

[0041] Figure 17 This is a schematic diagram of the first structure of the second smoke collection hood provided in Embodiment 2 of the present invention;

[0042] Figure 18 This is a schematic diagram of the second structure of the second smoke collection hood provided in Embodiment 2 of the present invention;

[0043] Figure 19 This is a first side view of a kitchen appliance provided in Embodiment 3 of the present invention;

[0044] Figure 20 This is a second side view of a kitchen appliance provided in Embodiment 3 of the present invention;

[0045] Figure 21 This is a third side view of a kitchen appliance provided in Embodiment 3 of the present invention;

[0046] Figure 22 This is a schematic diagram of a movable side plate and a third driving member provided in Embodiment 3 of the present invention;

[0047] Figure 23 This is a first side view of another kitchen appliance provided in Embodiment 3 of the present invention;

[0048] Figure 24 This is a second side view of another kitchen appliance provided in Embodiment 3 of the present invention;

[0049] Figure 25 This is a schematic diagram of another movable side plate and a third driving member provided in Embodiment 3 of the present invention.

[0050] In the picture:

[0051] 100. Casing; 200. Main fan; 300. Oil cup;

[0052] 10. First smoke hood; 11. First smoke collection chamber; 12. First air inlet; 13. Side plate structure; 131. Fixed side plate; 132. Movable side plate; 103. Third air inlet; 14. Protrusion; 15. Third driving component;

[0053] 20. Second smoke hood; 21. Second air inlet; 22. Second smoke collection chamber; 23. Cylinder body; 24. End plate; 241. Air inlet hole;

[0054] 30. First drive assembly; 40. Rectifier screen; 50. Air guide tube; 60. Cleaning assembly; 61. Cleaning brush; 62. Water pump; 63. Cleaning tank; 70. Second drive component; 81. First mounting plate; 811. Slider; 82. Second mounting plate; 90. Second drive assembly; 91. Drive roller. Detailed Implementation

[0055] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0056] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0057] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0058] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0059] Example 1

[0060] See Figures 1 to 13 This embodiment provides a kitchen appliance, which can be a range hood, integrated stove, or integrated range hood, or other household appliances with smoke extraction functions. The kitchen appliance includes a housing 100 and a smoke collection device. The smoke collection device includes a first smoke collection hood 10, which has a first smoke collection chamber 11 and a first air inlet 12. The first smoke collection hood 10 is connected to the housing 100. A main fan 200 is installed inside the housing 100 or the first smoke collection hood 10 to extract cooking fumes. The first air inlet 12 connects to the outside and the first smoke collection chamber 11, allowing cooking fumes to enter the first smoke collection chamber 11 from the first air inlet 12 and be discharged through the smoke guide channel within the housing 100. Exemplarily, the housing 100 is located on top of the first smoke collection hood 10, and the main fan 200 is located inside the housing 100.

[0061] This embodiment uses a range hood as an example, specifically a side-suction range hood. A first air inlet 12 is disposed on the front side panel of the first smoke collection hood 10, and the front side panel is set at an angle relative to the horizontal plane. Exemplarily, the front side panel extends downwards at an angle from front to back. The kitchen appliance also includes an oil cup 300, which is disposed on the lower side of the first smoke collection hood 10 and located at the rear end of the first smoke collection hood 10.

[0062] The shape and number of the first air inlets 12 are not limited here. For example, the first air inlet 12 is elongated and extends along the left-right direction of the first smoke hood 10. Alternatively, the first air inlet 12 may be circular, rectangular, elliptical, or other shapes. One or more first air inlets 12 may be provided. For example, multiple elongated first air inlets 12 are spaced apart along the vertical direction of the first smoke hood 10. Alternatively, multiple circular first air inlets 12 are arranged in a matrix on the first smoke hood 10.

[0063] The smoke collection device also includes a second smoke collection hood 20. At least part of the second smoke collection hood 20 is disposed in the first smoke collection chamber 11. The second smoke collection hood 20 is provided with a plurality of second air inlets 21 that communicate with the first smoke collection chamber 11 at intervals around the circumference. At least two second air inlets 21 have different air inlet areas. The second smoke collection hood 20 is rotatably connected to the first smoke collection hood 10 so that different second air inlets 21 communicate with the outside.

[0064] The second fume hood 20 is provided with multiple second air inlets 21 at intervals around its circumference. By making full use of the circumferential area of ​​the second fume hood 20, not only can a large number of second air inlets 21 be set, but it also occupies a small volume. By rotating the second fume hood 20, the second air inlets 21 with different air inlet areas can be selected, which is convenient for adjustment to adapt to different oil fume environments.

[0065] For example, the required air intake area is determined based on the oil fume concentration, and the rotation angle of the second smoke hood 20 is adjusted according to the air intake area so that the corresponding second air inlet 21 connects to the outside and the first smoke collection chamber 11. For example, the air intake areas of each second air inlet 21 are A1, A2, A3 and A4 in ascending order. When the machine is turned on, the oil fume concentration is obtained. If the oil fume concentration is less than the first set concentration value, the second air inlet 21 of the air intake area A1 is connected to the outside by rotating the second smoke hood 20; if the oil fume concentration is greater than or equal to the first set concentration value and less than the second set concentration value, the second air inlet 21 of the air intake area A2 is connected to the outside by rotating the second smoke hood 20; if the oil fume concentration is greater than or equal to the second set concentration value and less than the third set concentration value, the second air inlet 21 of the air intake area A3 is connected to the outside by rotating the second smoke hood 20; if the oil fume concentration is greater than or equal to the third set concentration value, the second air inlet 21 of the air intake area A4 is connected to the outside by rotating the second smoke hood 20.

[0066] The air intake area of ​​the second air intake 21 can be set according to actual needs. The more types of air intake areas the second air intake 21 has, the more choices there are, and the more oil fume environments it can adapt to. Optionally, the air intake areas of each second air intake 21 are different. For example, if there are N second air intakes 21, then there are N types of air intake areas.

[0067] For example, the second air inlet 21 extends in a long strip shape, and the width of each second air inlet 21 increases in an arithmetic progression from small to large. The lengths of each second air inlet 21 can be the same or different. To facilitate the differentiation of the air intake area of ​​each second air inlet 21, in this embodiment, the lengths of each second air inlet 21 are the same, and the air intake areas of second air inlets 21 with different widths are different; the wider the second air inlet 21, the larger the air intake area. The widths of each second air inlet 21 increase in an arithmetic progression from small to large, which is convenient for processing and production. For example, the widths of each second air inlet 21 are 1cm, 1.5cm, 2cm, 2.5cm, 3cm, 3.5cm, 4cm, etc. The second air inlets 21 on the second smoke hood 20 can be distributed in order of increasing air intake area, or they can be arranged randomly.

[0068] In some embodiments, a filter screen is provided on the second fume hood 20, covering the second air inlet 21. The filter screen filters the oil fumes to prevent excessive oil mist from entering the first fume collection chamber 11. In some embodiments, a rectifier screen 40 is circumferentially arranged on the outer side of the second fume hood 20, spaced apart from the second fume hood 20. After passing through the second fume hood 20, the oil fumes then pass through the rectifier screen 40, which serves to rectify and filter the oil fumes, resulting in lower noise and better filtration.

[0069] The shape of the second smoke hood 20 can be set according to actual needs. In this embodiment, the second smoke hood 20 has an arc-shaped structure and can rotate around its own first axis. The second air inlet 21 extends parallel to the first axis. By setting the second smoke hood 20 to an arc-shaped structure, it is easy to process and manufacture, and easy to rotate.

[0070] The second smoke hood 20 can be cylindrical or arc-shaped. In this embodiment, the second smoke hood 20 is cylindrical, and the circumference of the second smoke hood 20 can be used to set the second air inlet 21. In other embodiments, the second smoke hood 20 is arc-shaped, and the central angle of the arc can be set according to actual needs, such as 180 degrees or 270 degrees.

[0071] like Figures 4 to 6 As shown, the second smoke collection hood 20 includes a cylindrical body 23 and two end plates 24, which are disposed at both ends of the cylindrical body 23 along its axial direction. The smoke collection device also includes a first drive assembly 30, which is used to drive the second smoke collection hood 20 to rotate. The first drive assembly 30 can be a motor or a combination of a motor and a reducer. The first drive assembly 30 includes a rotating shaft, which is connected to the end plates 24.

[0072] The second fume hood 20 has an air inlet 241 communicating with the first fume collection chamber 11 at at least one end along the axial direction. By providing the air inlet 241, a portion of the oil fumes enters the first fume collection chamber 11 through the air inlet 241, increasing the air intake area and improving the fume extraction effect. Therefore, the end plate 24 not only connects to the rotating shaft and provides support for it, but also facilitates the installation of the air inlet 241, serving as a rectifying and filtering mechanism. The air inlet 241 can be a round hole or other shapes as needed.

[0073] A portion of the second smoke hood 20 protrudes from the first air inlet 12, and the second air inlet 21, which communicates with the outside, is located in the protruding portion of the second smoke hood 20. By making the second smoke hood 20 protrude from the first air inlet 12, the second smoke hood 20 is positioned further outward, and consequently, the second air inlet 21 is positioned further outward, covering a larger smoking area and facilitating the sealing of the gap between the second smoke hood 20 and the first smoke hood 10. In other embodiments, the second smoke hood 20 can protrude through a clearance hole provided on the first smoke hood 10, with the first air inlet 12 and the clearance hole being independently configured, meaning the second smoke hood 20 will not obstruct the first air inlet 12.

[0074] The second smoke hood 20 has multiple second air inlets 21 spaced around its circumference. As the second smoke hood 20 rotates, different second air inlets 21 connect to the outside through the first air inlet 12. To ensure controllable air intake area, only one second air inlet 21 connects to the first air inlet 12 at a time. The first air inlet 12 should not obstruct the second air inlets 21. Therefore, the largest second air inlet 21 can be set so that it is completely projected within the first air inlet 12.

[0075] For example, a sealing ring is provided on the edge of the first air inlet 12 on the first smoke hood 10, and the sealing ring abuts against the outer surface of the second smoke hood 20 to seal the gap between the second smoke hood 20 and the first smoke hood 10.

[0076] For example, such as Figure 7 and Figure 8 As shown, an arc-shaped protrusion 14 is formed around the first air inlet 12 on the first smoke hood 10. The protrusion 14 extends along the outer periphery of the second smoke hood 20 to guide the airflow to adhere to the outer surface of the second smoke hood 20. By setting the arc-shaped protrusion 14 around the first air inlet 12, the first smoke hood 10 and the second smoke hood 20 are partially conformal, and the protrusion 14 extends along the outer periphery of the second smoke hood 20 to guide the airflow to adhere to the outer surface of the second smoke hood 20.

[0077] The wall adhesion effect refers to the phenomenon where fluids (such as gases or liquids) tend to adhere to adjacent solid surfaces and flow along their contours when flowing. When a fluid approaches a curved or inclined surface, it will adhere to the surface due to viscosity. Simultaneously, the low-pressure area near the surface further "pulls" the fluid towards the surface. Therefore, by providing an arc-shaped protrusion 14, the airflow adheres to the surface of the protrusion 14 instead of flowing in a straight line, thereby guiding the airflow towards the second smoke hood 20 and forming a thin layer of airflow on the surface of the second smoke hood 20, creating an adsorption effect, further adsorbing the airflow and improving the smoking effect.

[0078] The interior of the second smoke hood 20 forms a second smoke collection chamber 22 that communicates with the first smoke collection chamber 11. The second air inlet 21 is also connected to the second smoke collection chamber 22. A guide duct 50 is installed inside the second smoke collection chamber 22 to guide the airflow from the second smoke collection chamber 22 into the first smoke collection chamber 11. When the airflow entering the second smoke collection chamber 22 from the second air inlet 21 encounters the guide duct 50, it flows along the surface of the guide duct 50. The guide duct separates the airflow on both sides and guides the airflow according to the principle of wall adhesion, thus directing the airflow into the first smoke collection chamber 11 without interfering with each other in the second smoke collection chamber 22, thereby smoothing the airflow.

[0079] The smoke collection device also includes a cleaning assembly 60, which comprises a cleaning brush 61 and a first driving member. The cleaning brush 61 contacts the surface of the second smoke collection hood 20, and the first driving member drives the cleaning brush 61 to rotate. During cleaning, the second smoke collection hood 20 rotates, and the cleaning brush 61 rotates as well, causing the cleaning brush 61 to perform friction cleaning on the surface of the second smoke collection hood 20. By setting the cleaning brush 61 and using the first driving member to drive the cleaning brush 61 to rotate, the cleaning brush 61 is subjected to uniform force, and the cleaning effect is improved. The first driving member can be a motor.

[0080] In some embodiments, at least two sets of cleaning brushes 61 are provided. At least one set of cleaning brushes 61 is located on the outer side of the second smoke hood 20 and in contact with the outer surface of the second smoke hood 20, and at least one set of cleaning brushes 61 is located on the inner side of the second smoke hood 20 and in contact with the inner surface of the second smoke hood 20. By providing cleaning brushes 61 on both the inner and outer sides of the second smoke hood 20, the cleaning is more comprehensive and the cleaning effect is better.

[0081] The cleaning brush 61 extends along the length of the second smoke hood 20. Optionally, the length of the cleaning brush 61 is greater than the length of the second smoke hood 20 so as to thoroughly clean the surface of the second smoke hood 20.

[0082] The cleaning assembly 60 also includes a water pump 62, which sprays water onto the cleaning brush 61. By spraying water onto the cleaning brush 61, dirt on the cleaning brush 61 can be rinsed off, preventing excessive dirt buildup on the cleaning brush 61 from affecting the cleaning effect.

[0083] A cleaning tank 63 is provided in the first smoke collection chamber 11. The cleaning tank 63 is used to hold cleaning liquid. The water pump 62 can draw the cleaning liquid in the cleaning tank 63 and spray it onto the cleaning brush 61. The cleaning liquid flows down the cleaning brush 61 and then enters the cleaning tank 63.

[0084] like Figures 9 to 13 The smoke collection device also includes a second driving member 70, which drives the second smoke collection hood 20 and the cleaning brush 61 to move synchronously to immerse or detach from the cleaning solution. When the second smoke collection hood 20 needs to be cleaned, the second driving member 70 drives the second smoke collection hood 20 and the cleaning brush 61 to move synchronously to immerse in the cleaning solution. The second smoke collection hood 20 rotates, and the cleaning brush 61 rotates, causing the cleaning brush 61 to rub and clean the surface of the second smoke collection hood 20. Immersing the second smoke collection hood 20 in the cleaning solution soaks it, making it easier for the cleaning brush 61 to clean the stains on the second smoke collection hood 20. After cleaning, the second driving member 70 drives the second smoke collection hood 20 and the cleaning brush 61 to move synchronously to detach from the cleaning solution.

[0085] It is worth noting that the second smoke hood 20 is driven by the second driving component 70 to move synchronously with the cleaning brush 61 to immerse or detach from the cleaning liquid. Therefore, when cleaning is required, there is no need to disassemble the second smoke hood 20, thus achieving automatic cleaning without disassembly.

[0086] Because the second fume hood 20 is rotatable, when the second fume hood 20 is immersed in the cleaning solution, only a portion of the second fume hood 20 needs to be immersed. As the second fume hood 20 rotates, the entire second fume hood 20 can gradually come into contact with the cleaning solution. Therefore, there is no need to set up an excessively large cleaning tank 63, saving space.

[0087] When the second smoke hood 20 is immersed in the cleaning solution, the cleaning brush 61 is also immersed in the cleaning solution. By immersing the cleaning brush 61 in the cleaning solution, the oil stains cleaned by the cleaning brush 61 are directly left in the cleaning solution, avoiding the accumulation of stains on the cleaning brush 61 and ensuring the cleanliness of the surface of the second smoke hood 20.

[0088] Specifically, the cleaning tank 63 is located at the bottom of the first smoke collection chamber 11. A drain outlet is located at the bottom of the cleaning tank 63, and this outlet is connected to the outside via a pipe. This pipe can be connected to a sewer or a waste liquid collector, etc. A drain valve is installed on the pipe. The drain valve can be opened via a user control button.

[0089] A liquid inlet pipe is provided at the upper part of the cleaning tank 63 for injecting cleaning fluid into the cleaning tank 63. A switch valve is installed on the liquid inlet pipe. Optionally, a liquid level sensor is installed inside the cleaning tank 63 to control the closing of the switch valve. The switch valve can be opened via a user control button or a switch.

[0090] Two second driving components 70 can be provided: one to drive the second smoke hood 20 to move, and the other to drive the cleaning brush 61 to move. To ensure that the second smoke hood 20 and the cleaning brush 61 move synchronously and to save parts, the second smoke hood 20 and the cleaning brush 61 share one second driving component 70. A first mounting plate 81 is provided inside the first smoke collection chamber 11. The second smoke hood 20 and the cleaning brush 61 are both mounted on the first mounting plate 81. The first mounting plate 81 is slidably connected to the first smoke hood 10. The second driving component 70 can drive the first mounting plate 81 to slide so that the second smoke hood 20 and the cleaning brush 61 are simultaneously immersed in or detached from the cleaning solution. By setting the first mounting plate 81, only one set of second driving components 70 is needed to drive the second smoke hood 20 and the cleaning brush 61 to move synchronously, simplifying the structure and allowing the second smoke hood 20 to be immersed in the cleaning solution for cleaning, or to be cleaned outside the cleaning tank 63. When the second smoke hood 20 needs to be cleaned, the second driving component 70 drives the first mounting plate 81 to slide, so that the second smoke hood 20 and the cleaning brush 61 move synchronously into the cleaning fluid. The second driving component 70 can be a cylinder, a hydraulic cylinder, or a push rod motor.

[0091] The first driving member is used to drive the cleaning brush 61 to rotate. Therefore, the first driving member is set on the first mounting plate 81, and the second smoke hood 20, the cleaning brush 61 and the first driving member move synchronously. In this embodiment, the rectifier mesh 40 is set on the outside of the second smoke hood 20. The rectifier mesh 40 is fixedly connected to the first mounting plate 81, so the rectifier mesh 40 moves synchronously with the second smoke hood 20.

[0092] The sliding trajectory of the first mounting plate 81 can be a straight line or a curve. For example, the second driving member 70 is a push rod motor. One end of the push rod motor is hinged to the first smoke hood 10, and the output rod of the push rod motor is hinged to the first mounting plate 81, so that the sliding trajectory of the first mounting plate 81 is a curve.

[0093] A guide structure is provided between the first mounting plate 81 and the first smoke collection hood 10. For example, a slider 811 is provided on the first mounting plate 81 and a guide groove is provided on the first smoke collection hood 10. The slider 811 is slidably connected to the guide groove so that the movement of the first mounting plate 81 is more stable.

[0094] In some embodiments, a second mounting plate 82 is fixedly disposed on the first smoke hood 10, and the first mounting plate 81 is slidably connected to the second mounting plate 82. By providing the second mounting plate 82, it is convenient to open a guide groove to prevent damage to the first smoke hood 10.

[0095] To ensure the stable sliding of the second smoke hood 20, two first mounting plates 81 can be provided, distributed at both ends of the second smoke hood 20 along its axial direction. Correspondingly, two second mounting plates 82 can be provided, with each first mounting plate 81 slidably connected to a corresponding second mounting plate 82.

[0096] Example 2

[0097] Figures 14 to 18 Embodiment 2 is shown, wherein components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as those in Embodiment 1. For simplicity, only the differences between Embodiment 2 and Embodiment 1 are described. The difference lies in that the second smoke hood 20 is a flexible structure and is oval in shape. Specifically, the smoke collection device also includes a second drive assembly 90, which includes two parallel and spaced-apart drive rollers 91. The second smoke hood 20 is a flexible structure and is sleeved on the outside of the two drive rollers 91. At least one drive roller 91 can rotate around its own axis to drive the second smoke hood 20 to rotate. By setting the second smoke hood 20 as a flexible structure, and by using the two drive rollers 91 to provide support and power to the second smoke hood 20, the second smoke hood 20 can achieve a rotational movement similar to a transmission belt.

[0098] The material of the second smoke hood 20 can be any existing material, such as soft plastic or rubber, without limitation, as long as it can rotate under the driving action of the drive roller 91. The drive roller 91 can be driven by a motor, which can directly or indirectly drive one of the drive rollers 91 to rotate, while the other drive roller 91 acts as a driven roller, which will not be described in detail here.

[0099] In some embodiments, the second drive assembly 90 further includes a tension roller, which can be disposed on the inner side of the second smoke hood 20 or on the outer side of the second smoke hood 20. The tension roller abuts against the surface of the second smoke hood 20 to tension the second smoke hood 20 and prevent the second air inlet 21 from being obstructed due to deformation of the second smoke hood 20.

[0100] The drive roller 91 can drive the second smoke hood 20 to rotate clockwise or counterclockwise. For example, the drive roller 91 can drive the second smoke hood 20 to rotate clockwise, and the various second air inlets 21 are distributed in a counterclockwise order according to the air inlet area from small to large. As the second smoke hood 20 rotates, the air inlet area gradually increases. When the second smoke hood 20 rotates one revolution, the air inlet area switches from the maximum to the minimum.

[0101] To prevent the second smoke hood 20 from slipping during rotation, an anti-slip layer can be provided on the surface of the drive roller 91 to ensure the stability of the second smoke hood 20's movement.

[0102] The bottom end of the second smoke hood 20 is immersed in the cleaning solution of the cleaning tank 63, and the cleaning effect is improved by soaking. Since drive rollers 91 are set at both ends of the second smoke hood 20, the drive roller 91 located at the bottom end of the second smoke hood 20 is immersed in the cleaning solution.

[0103] The cleaning brush 61 is located in the cleaning tank 63 and immersed in the cleaning solution. By immersing the cleaning brush 61 in the cleaning solution, the oil stains cleaned by the cleaning brush 61 are directly left in the cleaning solution, avoiding the accumulation of stains on the cleaning brush 61 and ensuring the cleanliness of the surface of the second smoke hood 20.

[0104] Example 3

[0105] Figures 19 to 25 Embodiment 3 is shown, wherein components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as those in Embodiment 1. For simplicity, only the differences between Embodiment 3 and Embodiment 1 are described. The difference is that the first smoke hood 10 includes a side plate structure 13, which has a third air inlet 103. The side plate structure 13 includes a fixed side plate 131 and a movable side plate 132. The movable side plate 132 can move relative to the fixed side plate 131 so that the third air inlet 103 selectively connects to the outside and the first smoke collection chamber 11. By cooperating with the second air inlet 21, the air intake area is increased, the smoke collection effect is enhanced, and the escape of oil fumes is reduced. By setting the third air inlet 103 in the side plate structure 13, the side plate structure 13 and the side space are fully utilized to prevent the escape of oil fumes from the side and ensure the smoke extraction effect.

[0106] For example, the third air inlet 103 is opened or closed based on the concentration of cooking fumes. When the concentration of cooking fumes is greater than or equal to a first set concentration value, the third air inlet 103 is open; when the concentration of cooking fumes is less than the first set concentration value, the third air inlet 103 is closed. For example, the opening degree of the third air inlet 103 is controlled based on the concentration of cooking fumes. When the concentration of cooking fumes is greater than or equal to the first set concentration value, the third air inlet 103 is open with an opening degree of 0.5; when the concentration of cooking fumes is greater than or equal to a second set concentration value, the third air inlet 103 is open with an opening degree of 1, where the second set concentration value is greater than the first set concentration value. Alternatively, other processes for controlling the opening or closing of the third air inlet 103 can be set according to actual needs, which will not be elaborated here.

[0107] The first smoke hood 10 includes two sets of side panel structures 13. Optionally, one set of side panel structures 13 includes a fixed side panel 131 and a movable side panel 132, with the fixed side panel 131 and / or the movable side panel 132 having a second air inlet 21. The other set of side panel structures 13 is a common plate structure. Optionally, both sets of side panel structures 13 include a fixed side panel 131 and a movable side panel 132, with the fixed side panel 131 and / or the movable side panel 132 having a second air inlet 21, so that the smoke from both sides of the first smoke hood 10 is evenly distributed.

[0108] The smoke collection device also includes a third driving member 15, which is disposed within the first smoke collection chamber 11 and is used to drive the movable side plate 132 to move relative to the fixed side plate 131. The movement trajectory of the movable side plate 132 can be linear sliding or rotation about an axis. Exemplarily, the third driving member 15 is used to drive the movable side plate 132 to slide linearly relative to the fixed side plate 131, and the third driving member 15 can be a cylinder, a hydraulic cylinder, or a push rod motor.

[0109] In some embodiments, a filter screen is provided at the third air inlet 103. The filter screen filters the oil fumes to prevent excessive oil fumes from entering the first smoke collection chamber 11.

[0110] For example, see Figures 19 to 22 The movable side plate 132 is provided with a third air inlet 103. The movable side plate 132 has an air intake channel communicating with the third air inlet 103. The air intake channel is connected to the first smoke collection chamber 11. The movable side plate 132 can extend or retract relative to the fixed side plate 131 so that the third air inlet 103 can selectively connect to the outside. When the movable side plate 132 extends relative to the fixed side plate 131, the third air inlet 103 connects to the outside, and the outside airflow can reach the first smoke collection chamber 11 through the third air inlet 103 and the air intake channel. When the movable side plate 132 retracts relative to the fixed side plate 131, the third air inlet 103 is blocked by the fixed side plate 131 and cannot connect to the outside, so the third air inlet 103 is closed. By changing the position of the movable side plate 132, not only can the third air inlet 103 be opened or closed, but the opening degree of the third air inlet 103 can also be adjusted.

[0111] The third air inlet 103 can be set as one or multiple. The extension distance of the movable side plate 132 can be adjusted as needed, which can not only adjust the opening of the third air inlet 103, but also change the position of the third air inlet 103 to achieve different smoke extraction effects.

[0112] In this embodiment, the movable side plate 132 can extend forward and downward relative to the fixed side plate 131, and the third air inlet 103 moves forward and downward with the movable side plate 132, getting closer to the stove and having a larger smoke collection range, thus improving the smoke extraction effect.

[0113] See Figures 23 to 25Both the fixed side plate 131 and the movable side plate 132 are provided with a third air inlet 103. The movable side plate 132 can move relative to the fixed side plate 131 so that the third air inlets 103 of the two are interconnected or misaligned. When the third air inlets 103 of the two are interconnected, the third air inlet 103 connects to the outside and the first smoke collection chamber 11; when the third air inlets 103 of the two are misaligned, the third air inlet 103 cannot connect to the outside and the first smoke collection chamber 11. The misalignment can be considered as the two third air inlets 103 being completely offset, that is, the fixed side plate 131 blocks the third air inlet 103 on the movable side plate 132, and the movable side plate 132 blocks the third air inlet 103 on the fixed side plate 131.

[0114] For example, the movable side plate 132 is provided with two third air inlets 103, and the fixed side plate 131 is provided with a third air inlet 103. When the movable side plate 132 extends relative to the fixed side plate 131, one of the third air inlets 103 on the movable side plate 132 is connected to the third air inlet 103 on the fixed side plate 131, and the other third air inlet 103 on the movable side plate 132 extends out of the fixed side plate 131 along with the movable side plate 132. The two third air inlets 103 on the movable side plate 132 are arranged at intervals on the side of the first smoke collection chamber 11, further increasing the air intake area and improving the smoke extraction effect. Of course, more than two third air inlets 103 can also be provided on the movable side plate 132, and multiple third air inlets 103 can also be provided on the fixed side plate 131. This will not be elaborated here, as long as the third air inlet 103 can be opened or closed by the movement of the movable side plate 132 relative to the fixed side plate 131.

[0115] Example 4

[0116] This embodiment provides a smoke collection method using the smoke collection device of any of the above embodiments, including: acquiring the oil fume concentration, determining the required air inlet area based on the oil fume concentration, and adjusting the rotation angle of the second smoke collection hood 20 according to the air inlet area so that the corresponding second air inlet 21 connects to the outside and the first smoke collection chamber 11. Adjusting the air inlet area according to the oil fume concentration makes the air inlet area more compatible with the actual oil fume environment, thus achieving a better smoke extraction effect.

[0117] For example, the air intake areas of each of the second air inlets 21, from smallest to largest, are A1, A2, A3, and A4. When the machine is turned on, the oil fume concentration is obtained. If the oil fume concentration is less than a first set concentration value, the second air inlet 21 of air intake area A1 is connected to the outside by rotating the second smoke hood 20; if the oil fume concentration is greater than or equal to the first set concentration value and less than the second set concentration value, the second air inlet 21 of air intake area A2 is connected to the outside by rotating the second smoke hood 20; if the oil fume concentration is greater than or equal to the second set concentration value and less than the third set concentration value, the second air inlet 21 of air intake area A3 is connected to the outside by rotating the second smoke hood 20; if the oil fume concentration is greater than or equal to the third set concentration value, the second air inlet 21 of air intake area A4 is connected to the outside by rotating the second smoke hood 20.

[0118] When the second air inlet 21 of air inlet area A1 is connected to the outside, if the oil fume concentration suddenly increases to a level greater than or equal to the third set concentration value, the second air inlet 21 of air inlet area A4 will be connected to the outside by rotating the second smoke collection hood 20. Therefore, the air inlet area can be adjusted at any time according to the actual oil fume concentration, which is convenient and ensures that the air inlet area matches the oil fume concentration.

[0119] For example, when the oil fume concentration is greater than or equal to a first set concentration value, the third air inlet 103 opens; when the oil fume concentration is less than the first set concentration value, the third air inlet 103 closes. For example, the opening degree of the third air inlet 103 is controlled according to the oil fume concentration. When the oil fume concentration is greater than or equal to the first set concentration value, the third air inlet 103 opens with an opening degree of 0.5; when the oil fume concentration is greater than or equal to a second set concentration value, the third air inlet 103 opens with an opening degree of 1, where the second set concentration value is greater than the first set concentration value.

[0120] Alternatively, it can be determined whether there is any oil fume escaping from the side of the first fume hood 10. If so, the third air inlet 103 is opened; otherwise, the third air inlet 103 is closed. Whether oil fumes are escaping can be determined by detecting oil fume using an oil fume sensor located on the side of the first fume hood 10. If oil fume is detected, it indicates that oil fume has escaped to the side of the first fume hood 10, and oil fume escape is present.

[0121] The above embodiments merely illustrate the basic principles and characteristics of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A smoke-collecting device, characterized in that, include: The first smoke hood (10) has a first smoke collection chamber (11) and a first air inlet (12) is provided on the first smoke hood (10); The second smoke hood (20) is at least partially disposed within the first smoke collection chamber (11). The second smoke hood (20) is provided with a plurality of second air inlets (21) that communicate with the first smoke collection chamber (11) at circumferential intervals. At least two of the second air inlets (21) have different air inlet areas. The second smoke hood (20) is rotatably connected to the first smoke hood (10) so that different second air inlets (21) communicate with the outside.

2. The smoke-collecting device according to claim 1, characterized in that, The second air inlet (21) extends in a long strip shape, and the width of each second air inlet (21) increases in an arithmetic sequence from small to large.

3. The smoke-collecting device according to claim 1, characterized in that, The second smoke hood (20) is provided with a filter screen, which covers the second air inlet (21); and / or, a rectifier screen (40) is provided circumferentially on the outer side of the second smoke hood (20), which is spaced apart from the second smoke hood (20).

4. The smoke-collecting device according to claim 1, characterized in that, The second smoke hood (20) has an arc-shaped structure and can rotate around its own first axis. The second air inlet (21) extends parallel to the first axis.

5. The smoke-collecting device according to claim 4, characterized in that, Part of the second smoke hood (20) protrudes from the first air inlet (12), and the second air inlet (21) that communicates with the outside is located in the protruding part of the second smoke hood (20).

6. The smoke-collecting device according to claim 5, characterized in that, An arc-shaped protrusion (14) is formed on the first smoke hood (10) around the first air inlet (12). The protrusion (14) extends along the outer periphery of the second smoke hood (20) to guide the airflow to adhere to the outer surface of the second smoke hood (20).

7. The smoke-collecting device according to claim 4, characterized in that, The second smoke hood (20) has an air inlet (241) at at least one end along the axial direction, which communicates with the first smoke collection chamber (11).

8. The smoke-collecting device according to claim 1, characterized in that, It also includes a cleaning assembly (60), which includes a cleaning brush (61) and a first driving member. The cleaning brush (61) contacts the surface of the second smoke collection hood (20), and the first driving member is used to drive the cleaning brush (61) to rotate.

9. The smoke-collecting device according to claim 8, characterized in that, The cleaning brush (61) is provided in at least two sets. At least one set of the cleaning brush (61) is located on the outside of the second smoke hood (20) and in contact with the outer surface of the second smoke hood (20). At least one set of the cleaning brush (61) is located on the inside of the second smoke hood (20) and in contact with the inner surface of the second smoke hood (20).

10. The smoke-collecting device according to claim 8, characterized in that, The cleaning assembly (60) also includes a water pump (62) for spraying water onto the cleaning brush (61).

11. The smoke-collecting device according to claim 8, characterized in that, The first smoke collection chamber (11) is provided with a cleaning tank (63) for holding cleaning liquid. The smoke collection device also includes a second driving member (70) for driving the second smoke collection hood (20) and the cleaning brush (61) to move synchronously to immerse or detach from the cleaning liquid.

12. The smoke-collecting device according to claim 11, characterized in that, A first mounting plate (81) is provided inside the first smoke collection chamber (11). The second smoke collection hood (20) and the cleaning brush (61) are both provided on the first mounting plate (81). The first mounting plate (81) is slidably connected to the first smoke collection hood (10). The second driving member (70) can drive the first mounting plate (81) to slide so that the second smoke collection hood (20) and the cleaning brush (61) are simultaneously immersed in or detached from the cleaning liquid.

13. The smoke-collecting device according to any one of claims 1-12, characterized in that, The interior of the second smoke hood (20) forms a second smoke collection chamber (22) that communicates with the first smoke collection chamber (11). The second air inlet (21) communicates with the second smoke collection chamber (22). A guide duct (50) is provided inside the second smoke collection chamber (22). The guide duct (50) is used to guide the airflow in the second smoke collection chamber (22) into the first smoke collection chamber (11).

14. The smoke-collecting device according to any one of claims 1-12, characterized in that, The first smoke hood (10) includes a side plate structure (13), the side plate structure (13) having a third air inlet (103), the side plate structure (13) including a fixed side plate (131) and a movable side plate (132), the movable side plate (132) being movable relative to the fixed side plate (131) so that the third air inlet (103) selectively connects to the outside world and the first smoke collection chamber (11).

15. A method for collecting smoke, characterized in that, The smoke collection device according to any one of claims 1-14 comprises: The oil fume concentration is obtained, and the required air inlet area is determined based on the oil fume concentration. The rotation angle of the second smoke hood (20) is adjusted according to the air inlet area so that the corresponding second air inlet (21) connects to the outside and the first smoke collection chamber (11).

16. A kitchen appliance, characterized in that, Includes a housing (100) and a smoke collection device according to any one of claims 1-14, wherein the first smoke collection hood (10) is connected to the housing (100).

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