A range hood
By using a telescopic smoke baffle and a multi-level adjustable smoke collection plate in a lift-type range hood, the problem of range hoods with fixed installation heights being unable to adapt to different levels of smoke is solved, resulting in better smoke extraction and reduced noise.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUHU MIDEA SMART KITCHEN APPLIANCE MFG CO LTD
- Filing Date
- 2021-06-21
- Publication Date
- 2026-06-02
Smart Images
Figure CN115574354B_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of household appliance technology, specifically relating to a range hood. Background Technology
[0002] A range hood is a kitchen appliance that extracts cooking fumes and steam to purify the kitchen environment. Installed above the stove, it quickly removes combustion exhaust and cooking fumes, expelling them outdoors, reducing indoor pollution, purifying the air, and providing safety features such as protection against poisoning and explosions. Range hoods have become an indispensable kitchen appliance in modern homes.
[0003] Current range hoods have a fixed height after installation, and the airflow is adjusted to handle different sizes of cooking fumes. However, the fume extraction effect is not good, and the operating noise is loud, which affects the user experience. Summary of the Invention
[0004] To address the technical problems of current range hoods having fixed installation heights, only being able to handle different sizes of cooking fumes by adjusting the airflow, resulting in poor fume extraction and high operating noise, this application provides a range hood.
[0005] One technical solution adopted in this application is: providing a range hood, comprising:
[0006] The body has a smoking chamber at its lower end;
[0007] A smoke collection plate is installed in the smoking chamber. The smoke collection plate is provided with an inlet that communicates with the smoking chamber. The front edge of the smoke collection plate is slidably connected to the body along a preset trajectory with a horizontal component.
[0008] A telescopic smoke baffle is used to connect the rear edge of the smoke collection plate to the body. The telescopic smoke baffle has an extended state that extends at least partially out of the smoking chamber and a retracted state that is at least partially housed within the smoking chamber.
[0009] A lifting device, located in the body, is used to drive the telescopic smoke hood to switch between the extended state and the retracted state.
[0010] As can be seen from the above technical solution, the range hood provided in this application is a lifting type. Specifically, the main body is fixed, and the telescopic smoke baffle is expanded or contracted by a lifting device, thereby driving the smoke collection plate to rise and fall. The smoke collection plate is located at the opening of the smoke extraction chamber of the main body, facing the stove, and is used to gather oil fumes. The oil fumes are then sucked into the smoke extraction chamber through the suction inlet on it. The front edge of the smoke collection plate is slidably connected to the main body, and a preset track is set on the main body to limit the sliding of the front edge of the smoke collection plate. This preset track has a horizontal component, so that the front edge of the smoke collection plate has a horizontal displacement when moving. The rear edge of the smoke collection plate can move up and down. Therefore, the movement of the entire smoke collection plate is a flip-lifting movement. The flip-lifting movement mode allows the smoke collection plate to flip to the side away from the operator when descending, avoiding the descent of the smoke collection plate from affecting normal cooking operations. The telescopic smoke baffle is telescopic, which can drive the smoke collection plate to rise and fall within the main body, and seals the space between the smoke collection plate and the main body to prevent oil fume leakage. Driven by the lifting device, the telescopic fume hood can extend at least partially, extending outside the smoke extraction chamber. The smoke collection plate then descends and flips to any preset position below the smoke extraction chamber, achieving multi-level adjustment. At this point, the smoke collection plate is closer to the stovetop, resulting in better smoke extraction. Furthermore, when dealing with heavy cooking fumes, there's no need to increase the airflow, thus achieving good noise levels while maintaining effective smoke extraction. Driven by the lifting device, when the telescopic fume hood is in the retracted state, it can be partially or completely stored inside the unit. When the unit is off or when cooking fumes are minimal, the telescopic fume hood can be kept in the retracted state, reducing the overall size of the unit.
[0011] Therefore, the range hood provided in this application has the following advantages: it can achieve multi-stage telescopic movement of the smoke collection plate, and the appropriate height of the smoke collection chamber can be selected according to the amount of kitchen fumes, flexibly adjusting the height of the telescopic smoke baffle to achieve the best smoke extraction effect. This solves the technical problems of current range hoods with fixed installation heights, which can only handle different sizes of fumes by adjusting the airflow, resulting in poor smoke extraction and high operating noise.
[0012] In some embodiments, the telescopic smoke hood includes at least one smoke hood.
[0013] By setting the telescopic smoke hood as at least one nested smoke hood, the total length of the telescopic smoke hood can be adjusted by expanding or retracting one or more smoke hoods. The smoke hood also has a certain structural strength to ensure the lifting stability and movement accuracy of the telescopic smoke hood.
[0014] In some embodiments, the body includes an internally connected frame and a smoke hood, the smoke hood being disposed at the bottom end of the frame, and the smoke shield being slidably connected to the frame and / or the smoke hood.
[0015] In some embodiments, the telescopic smoke hood includes a primary smoke hood, the lower end of which is hinged to the rear edge of the smoke collection plate.
[0016] By setting a single-stage smoke baffle, the structure of the telescopic smoke baffle is simpler and easier to implement. By controlling the lifting height of the lifting device, the smoke collection plate can be lowered and flipped to any preset position below the smoke extraction chamber, which is closer to the stove and has a better smoke extraction effect.
[0017] In some embodiments, the telescopic smoke hood includes two smoke hoods, and the rear edge of the smoke collection plate is hinged to one of the smoke hoods; a first sliding limiting mechanism and a second sliding limiting mechanism are respectively provided on the frame and the smoke collection hood, and the first sliding limiting mechanism and the second sliding limiting mechanism are respectively connected to the two smoke hoods.
[0018] By designing a two-stage smoke baffle, the retractable smoke baffle's shrinkage volume is reduced, facilitating overall miniaturization and ease of implementation. A sliding limit mechanism allows for precise control of the smoke baffle, preventing friction during lifting and lowering, improving the stability of the smoke collection plate's position adjustment, and ensuring greater consistency in movement across the plate. This enhances the stability of the smoke collection plate adjustment and reduces noise levels. By controlling the lifting height of the device, the smoke collection plate can be lowered and flipped to any preset position below the smoke extraction chamber, bringing it closer to the cooktop for better smoke extraction.
[0019] In some embodiments, the telescopic smoke hood includes a three-stage smoke hood, with the rear edge of the smoke collection plate hinged to one of the smoke hoods; the smoke collection hood is provided with a sliding limiting mechanism, which includes a slidingly engaging telescopic joint and a guide rail. The telescopic joint includes three layers of sliding sleeves nested sequentially and slidingly engaging with each other. The three layers of sliding sleeves are respectively fixedly connected to the three stages of the smoke hood, and the guide rail is connected to the smoke collection hood.
[0020] By designing a three-stage smoke baffle, the retractable volume of the smoke baffle is further reduced, which is more conducive to the miniaturization of the entire unit. Due to the relatively complex structure of the three-stage smoke baffle, a sliding limit mechanism including a telescopic joint and guide rails is incorporated. The telescopic joint comprises three layers of sliding sleeves, which are nested sequentially and slide against each other. Each of the three sliding sleeves is fixedly connected to the three-stage smoke baffle. When the three sliding sleeves expand or contract, they can drive the connected smoke baffle to rise and fall, improving the stability of the smoke collection plate adjustment and reducing noise levels. By controlling the lifting height of the lifting device, the smoke collection plate can be lowered and flipped to any preset position below the smoke extraction chamber, bringing it closer to the stovetop for better smoke extraction.
[0021] In some embodiments, the smoke collection plate includes a cover body, which is divided into two negative pressure adsorption chambers by a smoke guide plate assembly, and the inlet is disposed on the smoke guide plate assembly.
[0022] By setting the smoke collection plate as a dual-chamber structure, the range hood of this application can be used on both single-burner and double-burner stovetops. When used on a single-burner stovetop, since the inlet is located in the middle of the smoke collection plate, the negative pressure in the middle is the highest, and the smoke collection plate can completely cover the single burner, which can prevent the oil fumes from escaping from the sides. When used on a double-burner stovetop, the two negative pressure adsorption chambers are used to absorb the cooking oil fumes from the two burners respectively.
[0023] In some embodiments, the smoke guide plate assembly includes a left smoke guide plate and a right smoke guide plate arranged at an angle, and the left smoke guide plate and the right smoke guide plate are respectively provided with the inlet.
[0024] By setting two intake ports, which are respectively located on the left and right smoke guide plates, and since the left and right smoke guide plates are set at an angle to each other, and at least one of them is inclined relative to the vertical plane, the two intake ports are respectively facing the two negative pressure adsorption chambers, providing sufficient negative pressure to absorb the cooking fumes from the two stoves respectively.
[0025] In some embodiments, at least one side of the smoke collecting plate has a gap with the lower end of the body.
[0026] By setting at least one side of the smoke collection plate to be spaced apart from the lower end of the machine body, the gap between the smoke collection plate and the lower end of the machine body forms a secondary intake port. In conjunction with the intake port on the smoke guide plate assembly, the smoke extraction effect can be improved.
[0027] In some embodiments, each side of the smoke collecting plate has a gap with the lower end of the body.
[0028] By setting secondary intake ports on each side of the smoke collection plate, the oil fumes escaping from all sides can be drawn into the smoke extraction chamber, which can prevent the oil fumes from escaping from the front, back, left, and right sides, and further improve the oil fume extraction effect while keeping the air volume basically unchanged.
[0029] In some embodiments, the machine body is provided with an oil mesh hinged to the inner wall of the machine body, and the front edge of the smoke collecting plate rests on the oil mesh.
[0030] By setting up an oil mesh, on the one hand, the front edge of the smoke collection plate is placed on the oil mesh, which allows the front edge of the smoke collection plate to slide freely along the plane of the oil mesh, adapting to different lifting heights, so that the smoke collection plate can be flipped up and down without affecting the cooking area. On the other hand, it can prevent foreign objects from entering the smoke chamber of the machine.
[0031] In some embodiments, the range hood further includes an oil cup disposed at the lower end of the telescopic smoke baffle, and the vertical projection of the rear edge of the smoke collecting plate falls into the opening of the oil cup.
[0032] By setting up an oil cup to collect the oil fume droplets formed by the condensation of the smoke collection plate, and since the smoke collection plate in this application is flipped and lowered, it is set at an overall angle. The oil fume droplets adhering to the smoke collection plate will move towards the rear edge of the smoke collection plate under the action of gravity. When a large number of oil fume droplets accumulate on the rear edge of the smoke collection plate, they will detach from the smoke collection plate and drip into the oil cup, which can prevent oil fume droplets from dripping onto the stove surface or into the food, thereby improving the user experience and food safety. Attached Figure Description
[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0034] Figure 1 This illustration shows a three-dimensional structural diagram of a range hood in one embodiment of the present application when the smoke collection chamber assembly is in a retracted state.
[0035] Figure 2 It shows Figure 1 A schematic diagram of the internal structure of a range hood after the outer casing has been removed.
[0036] Figure 3 It shows Figure 1 A schematic diagram of the internal structure of a range hood after the outer casing has been removed, from another perspective.
[0037] Figure 4 It shows Figure 1 A structural diagram of a range hood viewed from below.
[0038] Figure 5 A three-dimensional structural diagram of the range hood in another embodiment of this application is shown when the smoke collection chamber assembly is in a retracted state.
[0039] Figure 6 This paper shows a three-dimensional structural diagram of the range hood in Embodiment 2 of this application when the smoke collection chamber assembly is in the first-stage unfolded state.
[0040] Figure 7 This paper shows a three-dimensional structural diagram of the range hood in Embodiment 2 of this application when the smoke collection chamber assembly is in a two-stage unfolded state.
[0041] Figure 8 It shows Figure 5A schematic diagram of the internal structure of a range hood after the outer casing has been removed.
[0042] Figure 9 This illustration shows a three-dimensional structural diagram of the range hood in another embodiment of the present application when the smoke collection chamber assembly is in a three-stage unfolded state.
[0043] Figure 10 It shows Figure 9 A schematic diagram of the internal structure of a range hood after the outer casing has been removed.
[0044] Explanation of reference numerals in the attached drawings: 100-Range hood; 110-Body; 111-Frame; 112-Smoke hood; 113-Smoke chamber; 120-Smoke chamber assembly; 121-Smoke collection plate; 1211-Front edge; 1212-Rear edge; 1213-Hood body; 1214-Smoke guide plate assembly; 1215-Negative pressure adsorption chamber; 1216-Left smoke guide plate; 1217-Right smoke guide plate; 122-Retractable smoke baffle; 1221-Smoke baffle; 123-Suction inlet; 124-Secondary... Inlet, 1241-Front intake, 1242-Left intake, 1243-Right intake, 1244-Rear intake; 130-Lifting device, 131-Connecting platform; 140-Sliding limit mechanism, 141-Guide rail slider mechanism, 142-Support, 143-Expansion joint, 1431-Sliding sleeve, 144-Guide rail, 145-Guiding mechanism, 146-First sliding limit mechanism, 147-Second sliding limit mechanism; 150-Oil screen; 160-Oil cup. Detailed Implementation
[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0046] Furthermore, reference numerals and / or reference letters may be repeated in different examples in this application. Such repetition is for simplification and clarity purposes and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.
[0047] The dual-chamber range hoods in related technologies have a single, fixed intake inlet, primarily with a central or side opening. This prevents the smoke collection chamber from being adjusted to suit user needs, making it prone to escaping fumes from the front or sides under harsh conditions. Adjustable smoke collection chamber height would allow for different levels of height adjustment to accommodate varying amounts of smoke, resulting in better smoke extraction. For heavier fumes, the height of the collection chamber could be further lowered for even better smoke containment.
[0048] Therefore, this application provides a range hood, including a body with a smoke extraction chamber at its lower end, a smoke collection plate installed in the smoke extraction chamber, a telescopic smoke baffle body for connecting the rear edge of the smoke collection plate to the body, and a lifting device located in the body for driving the telescopic smoke baffle body to switch between an extended and retracted state. This range hood is a lifting type, specifically with the body fixed. The lifting device drives the smoke collection chamber assembly to extend or retract. The smoke collection chamber assembly is located at the opening of the smoke extraction chamber in the body; therefore, during the extension of the smoke collection chamber assembly, the smoke extraction surface of the entire machine will descend and approach the stove, improving the overall smoke extraction capacity. The smoke collection chamber assembly adopts a telescopic structure, including a smoke collection plate and a telescopic smoke baffle body. The smoke collection plate faces the stove and is used to gather oil fumes, which are then sucked into the smoke extraction chamber through an inlet on it. The telescopic smoke baffle body is telescopic, allowing it to move the smoke collection plate up and down within the body, and sealing the space between the smoke collection plate and the body to prevent oil fume leakage.
[0049] Driven by the lifting device, the telescopic smoke baffle can extend at least partially. At this time, the smoke collection chamber assembly extends outside the smoke extraction chamber, and the smoke collection plate descends and flips to any preset position below the smoke extraction chamber, achieving multi-level adjustment. The smoke collection plate is closer to the stovetop, resulting in better smoke extraction. Furthermore, when dealing with heavy fumes, there is no need to increase the airflow, thus achieving a good noise level while maintaining effective smoke extraction. Driven by the lifting device, when the smoke collection chamber assembly is in the retracted state, the telescopic smoke baffle can be partially or completely retracted into the machine body. When the machine is off or when the amount of cooking fumes is small, the smoke collection chamber assembly can be kept in the retracted state, reducing the overall size of the machine. This solves the technical problems of current range hoods with fixed installation heights, which can only handle different amounts of fumes by adjusting the airflow, resulting in poor smoke extraction and high operating noise.
[0050] This application is described below with reference to the accompanying drawings and specific embodiments:
[0051] Considering that the duct design of a dual-cavity range hood is more complex than that of a regular single-cavity range hood, and because dual-cavity range hoods have a wider range of applications, the following embodiments describe the structure of the range hood of this application using a dual-cavity range hood as an example. It should be understood that the multi-stage lifting technology of the range hood of this application can also be used in other types of range hoods (European-style range hoods, near-suction range hoods, etc.).
[0052] This application provides a range hood 100, such as... Figures 1 to 10 The diagram shows the overall structure and cross-sectional structure of the range hood 100 from different angles and in different operating states. The range hood 100 includes a body 110, a smoke collection chamber assembly 120, and a lifting device 130. The body 110 is the main part of the range hood 100, and a smoke extraction assembly, such as a motor and impeller, is installed within it. The lower end of the body 110 defines a smoke extraction chamber 113 with an opening area, and the smoke extraction assembly generates negative pressure within the smoke extraction chamber 113. The body 110 also serves as the mounting base for the smoke collection chamber assembly 120 and the lifting device 130.
[0053] The smoke collection chamber assembly 120 is mounted on the body 110 and is located at the opening of the smoking chamber 113. The smoke collection chamber assembly 120 has an extended state extending out of the smoking chamber 113 and a retracted state retracted within the smoking chamber 113. It should be understood that the extended state defined in this embodiment can be an extended state with different degrees of extension, not limited to a fully extended state. The retracted state generally refers to a state where it is completely retracted within the smoking chamber 113. In the retracted state, the smoke collection chamber assembly 120 is completely located within the smoking chamber 113. The lifting device 130 is used to drive the smoke collection chamber assembly 120 to switch between the extended state and the retracted state. The lifting device 130 can adopt any existing mechanism capable of lifting movement, including but not limited to hydraulic cylinders, pneumatic cylinders, electric cylinders, electric push rods, motor-driven ball screw pairs, motor-driven gear rack pairs, etc.
[0054] See details Figures 2 to 3 , Figures 6 to 8 as well as Figure 10 The smoke collection chamber assembly 120 includes a smoke collection plate 121 and a telescopic smoke baffle 122; the smoke collection plate 121 has a front edge 1211 and a rear edge 1212 that are disposed opposite to each other. Normally, the range hood 100 is installed on the wall, the front edge 1211 of the smoke collection plate 121 refers to the side of the panel closer to the user, and the rear edge 1212 of the smoke collection plate 121 refers to the side of the smoke collection plate 121 closer to the wall. The front edge 1211 of the smoke collection plate 121 is slidably connected to the body 110. The body 110 is provided with a preset trajectory to limit the sliding of the front edge of the smoke collection plate. The preset trajectory has a horizontal component, so that the front edge 1211 of the smoke collection plate 121 has a horizontal displacement when it moves. The rear edge 1212 of the smoke collection plate 121 is connected to the body 110 through a telescopic smoke baffle 122. The rear edge of the smoke collection plate can move up and down. Therefore, the movement of the entire smoke collection plate is a flip-up and lift-down movement mode. The flip-up and lift-down movement mode allows the smoke collection plate 121 to flip to the side away from the operator when it descends, so as to avoid the descent of the smoke collection plate 121 from affecting the normal cooking operation.
[0055] The smoke collection plate 121 is provided with an intake port 123, which connects the smoke extraction chamber 113 to the external environment to draw cooking fumes into the range hood. Driven by the lifting device 130, the telescopic smoke baffle 122 extends at least partially outside the body 110 when the smoke collection chamber assembly 120 is in the unfolded state, thereby causing the smoke collection plate to descend and flip to any preset position below the smoke extraction chamber 113. That is, the smoke collection plate 121 can remain stationary in two extreme positions: completely retracted into the smoke extraction chamber 113 and descended to its lowest position, as well as in any position between these two extreme positions, thereby realizing the multi-stage telescopic movement of the smoke collection chamber assembly 120. When the smoke collection chamber assembly 120 is in the retracted state, the telescopic smoke baffle 122 is at least partially retracted into the body to reduce the overall size of the machine.
[0056] Driven by the lifting device 130, the smoke collection chamber assembly 120 can select a suitable height for the smoke collection chamber position according to the amount of kitchen fumes, flexibly adjusting the height of the smoke collection chamber assembly 120 to achieve the best fume extraction effect. When the smoke collection chamber assembly 120 is in the extended state, the smoke collection chamber plate extends outside the smoke extraction chamber 113. The smoke collection plate 121 descends and flips to any preset position below the smoke extraction chamber 113. At this time, it is closer to the stove, resulting in better fume extraction. Moreover, when dealing with heavy fumes, there is no need to increase the air volume, thus achieving a good noise level while satisfying the fume extraction effect. Of course, in specific use, the multi-stage extension and retraction of the smoke collection chamber assembly 120 can also be combined with the air volume adjustment to deal with different sizes of fumes. It is understood that the range hood 100 of this embodiment can achieve a good fume extraction effect and a low noise level simply by changing the position of the smoke collection chamber without increasing the air volume, for example, at an air volume of 18m³ / h. 3 At a speed of / min, the noise level is 66dB.
[0057] In this embodiment, the smoke collecting plate 121 has a double-cavity structure, see details below. Figure 4The smoke collection plate 121 includes a hood 1213 and a smoke guide plate assembly 1214. The smoke guide plate assembly 1214 is located in the middle of the hood 1213, and the intake 123 is disposed on the smoke guide plate assembly 1214. The hood 1213 is divided into two negative pressure adsorption chambers 1215 by the smoke guide plate assembly 1214. By changing the position of the smoke guide plate assembly 1214 in the hood 1213, negative pressure adsorption chambers 1215 of different sizes can be obtained. Generally, the smoke guide plate assembly 1214 is placed at the symmetrical center of the hood 1213. By setting the smoke collection plate 121 as a dual-chamber structure, the range hood 100 of this application can be used for both single-burner and double-burner stovetops. When used on a single-burner stovetop, since the intake 123 is located in the middle of the smoke collection plate 121, the negative pressure in the middle is the highest, and the smoke collection plate 121 can completely cover the single burner, which can prevent the oil fumes from escaping from the sides. When applied to a dual-burner stovetop, the two negative pressure adsorption chambers 1215 are used to extract cooking fumes from the two burners respectively. It is understood that when the range hood 100 of this application is a single-chamber range hood 100, the intake 123 can be set at any position on the smoke collection plate 121, such as near the rear edge 1212 of the smoke collection plate 121.
[0058] The smoke guide plate assembly 1214 can be a single structural component or assembled from multiple components. In some embodiments, the smoke guide plate assembly 1214 includes a left smoke guide plate 1216 and a right smoke guide plate 1217, with two corresponding intake ports 123, one on the left smoke guide plate 1216 and the other on the right smoke guide plate 1217. Of course, in other embodiments, intake ports 123 may be provided only on the left smoke guide plate 1216 or the right smoke guide plate 1217. Considering that both burners in a dual-burner stove will be used, it is preferable to provide intake ports 123 on both the left smoke guide plate 1216 and the right smoke guide plate 1217.
[0059] The left smoke guide plate 1216 and the right smoke guide plate 1217 are set at an angle, and the left smoke guide plate 1216 and / or the right smoke guide plate 1217 are inclined relative to the vertical plane, so that the lower ends of the left smoke guide plate 1216 and the right smoke guide plate 1217 are close to each other and the upper ends are far apart. The angle of the left smoke guide plate 1216 and the right smoke guide plate 1217 can be adjusted according to the amount of oil fumes from the two stoves to optimize the oil fume extraction effect. By setting the left smoke guide plate 1216 and the right smoke guide plate 1217 to be installed at an angle, with the lower ends of the left smoke guide plate 1216 and the upper ends of the right smoke guide plate 1217 close to each other and the upper ends far apart, the cross-section of the smoke guide plate assembly 1214 is approximately V-shaped, which better matches the diffusion trend of oil fumes and improves the oil fume extraction effect. In some embodiments, the smoke guide plate assembly 1214 further includes an intermediate connector located at the lower ends of the left smoke guide plate 1216 and the right smoke guide plate 1217, and connecting the left smoke guide plate 1216 and the right smoke guide plate 1217. The intermediate connector can increase the distance between the left smoke guide plate 1216 and the right smoke guide plate 1217, allowing the two intake ports 123 to be closer to the fumes generated by the cooktop.
[0060] In current range hoods 100, the body 110 generally comprises two parts: an upper frame 111 and a lower smoke collection hood 112. The frame 111 houses a smoke extraction assembly, such as a motor and impeller, which generates negative pressure within the smoke collection chamber. The smoke collection hood 112 serves as the mounting base for the smoke collection chamber assembly 120, the control panel, and other accessories. The smoke collection hood 112 internally defines a smoke collection chamber 113 with an opening area.
[0061] In some embodiments, at least one side of the smoke collecting plate 121 has a gap with the smoke collecting hood 112 to form a secondary intake port 124 between the smoke collecting plate 121 and the smoke collecting hood 112. For example, when the horizontal projection of the smoke collecting plate 121 is polygonal, a secondary intake port 124 can be formed on at least one of the sides. Taking into account the diffusion of oil fumes, in some embodiments, the horizontal projection of the smoke collecting plate 121 is rectangular, and the front, rear, left, and right sides of the smoke collecting plate 121 all have gaps with the smoke collecting hood 112 to form four secondary intake ports 124 between the smoke collecting plate 121 and the smoke collecting hood 112, namely a front intake port 1241, a left intake port 1242, a right intake port 1243, and a rear intake port 1244, respectively. Figure 4 As shown.
[0062] Among the intake inlet 123 and the various auxiliary intake inlets 124, intake inlet 123 has the highest negative pressure, thus it is the main intake inlet. Secondly, the rear intake inlet 1244. When the range hood is absorbing cooking fumes, the fumes are drawn towards the middle and rear of the hood. Combined with the presence of the front intake inlet 1241, left intake inlet 1242, and right intake inlet 1243, this prevents fumes from escaping from the left, right, and front sides, further improving the fume extraction effect while maintaining a relatively constant airflow.
[0063] The smoke collecting plate 121 moves by tilting and lifting. To accommodate this movement, in some embodiments, the front edge 1211 of the smoke collecting plate 121 is slidably connected to the body 110 along a preset trajectory with a horizontal component, and the rear edge 1212 of the smoke collecting plate 121 is hinged to the telescopic smoke baffle 122. The telescopic smoke baffle 122 can adopt any telescopic structure, such as a folded tube or a sleeve, and the specific structure of the telescopic smoke baffle 122 is not limited in this application.
[0064] To improve the lifting stability and movement accuracy of the telescopic smoke hood, in some embodiments, at least one sliding limit mechanism 140 is provided in the body. The sliding limit mechanism 140 has a projection component in the vertical direction, thus enabling the telescopic smoke hood 122 to slide and be limited by the body 110. This avoids friction during lifting and lowering, improves the stability of the smoke collection plate 121 position adjustment, and makes the movement consistency of the smoke collection plate 121 more consistent, thereby improving the stability of the adjustment of the smoke collection plate 121 and reducing noise. The sliding limit mechanism 140 can adopt any mechanism that can achieve sliding limit, such as a guide rail slider mechanism with position locking, a slider groove, a telescopic guide column, etc. The specific structure of the sliding limit mechanism 140 is not limited in this application.
[0065] Since the telescopic smoke baffle 122 not only functions to extend and retract, but also needs to ensure that the smoke collection plate 121 moves in a flipping and lifting manner, the telescopic smoke baffle 122 is required to have a certain structural strength and good structural stability during telescopic movement. In some embodiments, the telescopic smoke baffle 122 includes at least one level of smoke baffle. When the number of levels of smoke baffle 1221 is two or more, each level of smoke baffle 1221 is nested sequentially. By setting the telescopic smoke baffle 122 to at least one level of sequentially nested smoke baffle, the total length of the telescopic smoke baffle 122 can be adjusted by extending or retracting one or more levels of smoke baffle 1221. The smoke baffle 1221 can be made of rigid sheet metal of any material, such as metal or plastic, and has a certain structural strength. Combined with the sliding limit mechanism 140, it further ensures the lifting stability and movement accuracy of the telescopic smoke baffle 122.
[0066] See Figure 2 and Figure 3 The diagram illustrates the internal structure of a range hood in one embodiment where the telescopic smoke baffle 122 is a single-stage smoke baffle. The lower end of the smoke baffle 1221 is hinged to the rear edge of the smoke collection plate 121. The smoke baffle 1221 is slidably connected to the frame 111 or the smoke collection hood 112 via a sliding limiting mechanism 140. When the smoke collection chamber assembly is in the extended state, the smoke baffle 1221 can extend partially or completely outside the body 110. If the smoke baffle 1221 only extends partially, the portion overlapping the smoke baffle 1221 with the body 110 can provide a certain guiding effect. When the smoke collection chamber assembly 120 is in the retracted state, the smoke baffle 1221 is completely retracted into the body 110, reducing the overall size of the machine. By setting a single-stage smoke baffle, the structure of the smoke collection chamber assembly is simpler and easier to implement.
[0067] The body 110 is provided with two parallel sliding limiting mechanisms 140, which are distributed on the left and right sides of the lifting device 130. The smoke hood 1221 is provided with a connecting platform 131 for connecting to the lifting end of the lifting device 130. The sliding limiting mechanism 140 has a projection component in the vertical direction. The smoke hood 1221 is slidably connected to and limited by the body 110 through the two sliding limiting mechanisms 140.
[0068] Specifically, the sliding limit mechanism 140 adopts a vertically installed guide rail slider mechanism 141. The guide rails / sliders of the two guide rail slider mechanisms 141 are installed in the inner wall of the frame 111 through supports 142. The sliders / guide rails of the two guide rail slider mechanisms 141 are fixedly connected to the smoke baffle 1221 respectively. Limiting mechanisms are provided at the top and bottom of the guide rails to limit the movement position of the sliders.
[0069] By setting a sliding limit mechanism 140 with a projection component along the vertical direction, the smoke baffle 1221 can be slidably limited, which can avoid friction during the lifting and lowering movement, improve the stability of the smoke collection plate 121 position adjustment, and make the movement consistency of the smoke collection plate 121 higher, thereby improving the stability of the adjustment of the smoke collection plate 121 and the noise level low.
[0070] See Figures 6 to 8 The diagram illustrates the overall and internal structure of the range hood in another embodiment where the telescopic smoke baffle 122 is a two-stage smoke baffle. The telescopic smoke baffle 122 includes two stages of smoke baffles 1221. The smoke baffles 1221 are interconnected with the body 110 and the adjacent two stages of smoke baffles 1221 when the smoke collection chamber assembly 120 is in the extended state, and at least partially overlap when the smoke collection chamber assembly 120 is in the retracted state. The front edge 1211 of the smoke collection plate 121 is slidably connected to the body 110 along a preset trajectory with a horizontal component, and the rear edge 1212 of the smoke collection plate 121 is hinged to the lower smoke baffle 1221 in the extended state.
[0071] By setting up a two-stage smoke baffle 1221, the shrinkage volume of the smoke collection chamber assembly 120 is reduced, which is conducive to the miniaturization of the whole machine and easy to implement. By controlling the lifting height of the lifting device 130, the smoke collection plate 121 can be lowered and flipped to any preset position below the smoke extraction chamber 113, which is closer to the stove and has a better smoke extraction effect.
[0072] It should be understood that the unfolded state defined in this embodiment can be an unfolded state with different degrees of unfolding, such as the first-stage smoke baffle 1221 being partially or fully unfolded, or both stages of the smoke baffle 1221 being partially or fully unfolded, and is not limited to the state where both stages of the smoke baffle 1221 are fully unfolded. The retracted state generally refers to a state where both stages of the smoke baffle 1221 are completely housed within the smoking chamber 113. In the retracted state, the smoke collection chamber assembly 120 is completely located within the smoking chamber 113. The lifting device 130 is used to drive the smoke collection chamber assembly 120 to switch between the unfolded state and the retracted state.
[0073] In this embodiment, the smoke collection chamber assembly 120 includes a smoke collection plate 121 and two-stage smoke baffles 1221, therefore, sliding limiting mechanisms 140 need to be provided for each of the two-stage smoke baffles 1221. See details... Figure 8 The sliding limiting mechanism 140 includes a first sliding limiting mechanism 146 and a second sliding limiting mechanism 147. Since the lifting heights of the two smoke hoods are different, the sliding strokes of the corresponding sliding limiting mechanisms are also different. In this embodiment, the sliding stroke of the first sliding limiting mechanism 146 is greater than that of the second sliding limiting mechanism 147. The first sliding limiting mechanism 146 is mounted on the frame 111. Mounting the first sliding limiting mechanism on the frame provides sufficient lifting space for it. The first sliding limiting mechanism 146 is connected to the lower smoke hood in the unfolded state. The second sliding limiting mechanism 147 is mounted on the smoke collection hood 112 and is connected to the upper smoke hood in the unfolded state.
[0074] The body 110 is equipped with two first sliding limit mechanisms 146 and two second sliding limit mechanisms 147, all of which are arranged vertically and symmetrically distributed on the left and right sides of the lifting device 130. A connecting platform is provided on the lower smoke baffle 1221 for connecting to the lifting end of the lifting device 130. The rear edge 1212 of the smoke collection plate 121 is also hinged to the lower smoke baffle 1221.
[0075] By setting up a two-stage smoke baffle 1221, the shrinkage volume of the smoke collection chamber assembly 120 is reduced, which is beneficial for the miniaturization of the entire machine and its ease of implementation. For example, if the maximum drop height of the overall smoke collection chamber design is 100mm, then each of the two-stage smoke baffles 1221 can be designed to drop by 50mm, so that the height of the smoke collection chamber assembly 120 after shrinkage is 50mm, resulting in a smaller volume. By controlling the lifting height of the lifting device 130, the smoke collection plate 121 can be lowered and flipped to any preset position below the smoke extraction chamber 113, which is closer to the stove and provides better smoke extraction.
[0076] See Figure 9 and Figure 10 This illustration shows the overall structure and internal structure of the range hood when the telescopic smoke baffle 122 is a three-stage smoke baffle in another embodiment. The telescopic smoke baffle 122 includes a three-stage smoke baffle 1221. The smoke baffle 1221 is interconnected with the body 110 and the two adjacent stages of the smoke baffle 1221 when the smoke collection chamber assembly 120 is in the deployed state, and at least partially overlaps with the smoke collection chamber assembly 120 when it is in the retracted state. The front edge 1211 of the smoke collection plate 121 is slidably connected to the body 110 along a preset trajectory with a horizontal component, and the rear edge 1212 of the smoke collection plate 121 is hinged to the lowermost smoke baffle 1221 in the deployed state.
[0077] By setting up a three-stage smoke baffle 1221, the shrinkage volume of the smoke collection chamber assembly 120 is further reduced, which is more conducive to the miniaturization of the whole machine. By controlling the lifting height of the lifting device 130, the smoke collection plate 121 can be lowered and flipped to any preset position below the smoke extraction chamber 113. At this time, it is closer to the stove and the smoke extraction effect is better.
[0078] It should be understood that the unfolded state defined in this embodiment can be an unfolded state with different degrees of unfolding, such as the first-level smoke baffle 1221 being partially or fully unfolded, both levels of smoke baffle 1221 being partially or fully unfolded, and all three levels of smoke baffle 1221 being partially or fully unfolded, and is not limited to the state where all three levels of smoke baffle 1221 are fully unfolded. The retracted state generally refers to the state where all three levels of smoke baffle 1221 are completely housed within the smoking chamber 113. In the retracted state, the smoke collection chamber assembly 120 is completely located within the smoking chamber 113. The lifting device 130 is used to drive the smoke collection chamber assembly 120 to switch between the unfolded state and the retracted state.
[0079] See details Figure 10In this embodiment, the telescopic smoke baffle 122 includes a three-stage smoke baffle 1221, making its structure relatively complex. The sliding limiting mechanism 140 includes a telescopic joint 143 and a guide rail 144. The telescopic joint 143 includes three layers of sliding sleeves 1431 nested sequentially and slidingly engaged with each other. The three layers of sliding sleeves 1431 are fixedly connected to the three-stage smoke baffle 121, and the guide rail 144 is mounted on the smoke collection hood 112. The telescopic joint 143 can achieve three-layer telescopic movement. Limiting mechanisms are provided between the layers of the telescopic joint 143, which can limit the movement of the inner sliding sleeves 1431. The telescopic joint 143 is movably fitted onto the guide rail 144, which can avoid friction during the lifting and lowering process, improve the stability of the smoke collection plate 121 position adjustment, and make the movement consistency of the smoke collection plate 121 more consistent, thereby improving the stability of the adjustment of the smoke collection plate 121 and reducing noise levels. In some embodiments, two auxiliary guide mechanisms 145 may be symmetrically arranged in the inner walls of the left and right sides of the smoke hood 112, and the auxiliary guide mechanisms 145 are connected to the smoke baffle 1221 and the smoke hood 112.
[0080] By setting up a three-stage smoke baffle 1221, the shrinkage volume of the smoke collection chamber assembly 120 is reduced, which is more conducive to the miniaturization of the entire machine. For example, if the maximum descent height of the overall smoke collection chamber is 120mm, then two stages of smoke baffles 1221 can be designed to each descend by 40mm, so that the height of the shrinkage smoke collection chamber assembly 120 is 40mm, resulting in a smaller volume. By controlling the lifting height of the lifting device 130, the smoke collection plate 121 can be lowered and flipped to any preset position below the smoke extraction chamber 113, which is closer to the stove and provides better smoke extraction.
[0081] For a range hood 100 with a front intake 1241, there is a certain gap between the front edge 1211 of the smoke collecting plate 121 and the smoke collecting hood 112. In some embodiments, an oil mesh 150 is provided in the body 110, and the oil mesh 150 is hinged to the inner wall of the body 110. The front edge 1211 of the smoke collecting plate 121 rests on the oil mesh 150. That is, the oil mesh 150 supports the front edge 1211 of the smoke collecting plate 121, but does not restrict the movement of the front edge 1211 of the smoke collecting plate 121. The front edge 1211 of the smoke collecting plate 121 can slide along the plane of the oil mesh 150.
[0082] The oil mesh 150 is generally elongated, and its length should not be less than the length of the front edge 1211 of the smoke collecting plate 121. In some embodiments, the cross-section of the oil mesh 150 is V-shaped, and the bend of the V-shaped oil mesh 150 is hinged to the inner wall of the body 110. The front edge 1211 of the smoke collecting plate 121 rests on the lower side of the mesh plate, while the upper side of the mesh plate serves as a rotation limiter. By setting the oil mesh 150 and covering the front suction port 1241, on the one hand, the front edge 1211 of the smoke collecting plate 121 rests on the oil mesh 150, allowing the front edge 1211 of the smoke collecting plate 121 to slide freely along the plane of the oil mesh 150 to adapt to different lifting heights. On the other hand, it can prevent foreign objects from entering the smoke chamber 113 of the body 110.
[0083] When the range hood 100 is working, the oil fumes condense and form oil droplets when they encounter the smoke collection plate 121. In some embodiments, the range hood 100 also includes an oil cup 160, which is disposed on the smoke baffle 1221, and the vertical projection of the rear edge 1212 of the smoke collection plate 121 falls into the opening of the oil cup 160.
[0084] By setting an oil cup 160 to collect the oil fume droplets formed by the condensation of the smoke collecting plate 121, and since the smoke collecting plate 121 in this application is flipped and lowered, it is tilted as a whole. The oil fume droplets adhering to the smoke collecting plate 121 will move towards the rear edge 1212 of the smoke collecting plate 121 under the action of gravity. When a lot of oil fume droplets accumulate on the rear edge 1212 of the smoke collecting plate 121, they will detach from the smoke collecting plate 121 and drip into the oil cup 160, which can prevent oil fume droplets from dripping onto the stove surface or into the food, thereby improving the user experience and food safety.
[0085] In this application, unless otherwise expressly 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 being 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 being 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.
[0086] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0087] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0088] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0089] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0090] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.
[0091] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.
[0092] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. A range hood, characterized in that, include: The body has a smoking chamber at its lower end; A smoke collection plate is installed in the smoking chamber. The smoke collection plate is provided with an inlet that communicates with the smoking chamber. The front edge of the smoke collection plate is slidably connected to the body along a preset trajectory with a horizontal component. A telescopic smoke baffle is used to connect the rear edge of the smoke collection plate to the body. The telescopic smoke baffle has an extended state that extends at least partially out of the smoking chamber and a retracted state that is at least partially housed within the smoking chamber. A lifting device, located in the body, is used to drive the telescopic smoke hood to switch between the extended state and the retracted state; the lifting device drives the telescopic smoke hood to descend so that the telescopic smoke hood extends at least partially out of the smoking chamber, and the telescopic smoke hood drives the smoke collection plate to descend and flip to the side away from the operator.
2. The range hood as described in claim 1, characterized in that: The telescopic smoke hood includes at least one smoke hood.
3. The range hood as described in claim 2, characterized in that: The machine body includes an internally connected frame and a smoke collection hood. The smoke collection hood is located at the bottom end of the frame, and the smoke shield is slidably connected to the frame and / or the smoke collection hood.
4. The range hood as described in claim 3, characterized in that: The telescopic smoke baffle includes a primary smoke baffle, the lower end of which is hinged to the rear edge of the smoke collection plate.
5. The range hood as described in claim 3, characterized in that: The telescopic smoke baffle includes two smoke baffles, and the rear edge of the smoke collection plate is hinged to one of the smoke baffles; a first sliding limit mechanism and a second sliding limit mechanism are respectively provided on the frame and the smoke collection hood, and the first sliding limit mechanism and the second sliding limit mechanism are respectively connected to the two smoke baffles.
6. The range hood as described in claim 3, characterized in that: The telescopic smoke hood includes a three-stage smoke hood, and the rear edge of the smoke collection plate is hinged to one of the smoke hoods. The smoke collection hood is provided with a sliding limiting mechanism, which includes a slidingly engaging telescopic joint and a guide rail. The telescopic joint includes three layers of sliding sleeves that are nested in sequence and slidably engaged with each other. The three layers of sliding sleeves are respectively fixedly connected to the three stages of the smoke hood, and the guide rail is connected to the smoke collection hood.
7. The range hood as described in any one of claims 1-6, characterized in that: The smoke collection plate includes a cover, which is divided into two negative pressure adsorption chambers by a smoke guide plate assembly, and the inlet is disposed on the smoke guide plate assembly.
8. The range hood as described in claim 7, characterized in that: The smoke guide plate assembly includes a left smoke guide plate and a right smoke guide plate arranged at an angle, and the left smoke guide plate and the right smoke guide plate are respectively provided with the inlet.
9. The range hood as described in any one of claims 1-6, characterized in that: There is a gap between at least one side of the smoke collection plate and the lower end of the body.
10. The range hood as described in claim 9, characterized in that: Each side of the smoke collection plate has a gap with the lower end of the body.
11. The range hood as described in any one of claims 1-6, characterized in that: The machine body is provided with an oil mesh that is hinged to the inner wall of the machine body, and the front edge of the smoke collecting plate is laid on the oil mesh.
12. The range hood as described in any one of claims 1-6, characterized in that: The range hood also includes an oil cup located at the lower end of the telescopic smoke baffle, and the vertical projection of the rear edge of the smoke collection plate falls into the opening of the oil cup.