Gas film range hood

Abstract

The utility model discloses a gas film range hood. The gas film range hood comprises a gas extraction assembly, a flow guide plate and a gas film assembly, and the gas extraction assembly is used for extracting oil fume; the flow guide plate is connected with the air exhaust assembly, is a part used for guiding and collecting oil fume on the range hood, and is used for guiding the oil fume so that the oil fume can conveniently enter the air exhaust assembly; the gas film assembly is arranged on the guide plate; wherein on the side, close to the lampblack, of the flow guide plate, the gas film assembly forms a gas film on the surface of the flow guide plate by blowing gas so as to reduce direct contact between the lampblack and the flow guide plate. Through the design, a layer of air film is formed on the surface of one side, in contact with oil fume, of the flow guide plate in an air blowing manner, when the oil fume floats to the surface of the flow guide plate, the oil fume is in contact with the air film, and the air film immediately blows the oil fume into the air exhaust assembly to be sucked away, so that a good protection effect on the surface of the flow guide plate is achieved; the pollution of oil smoke to the surface of the guide plate is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, and in particular to an air-film range hood. Background Technology

[0002] When a traditional range hood extracts cooking fumes, the fumes come into direct contact with the baffle plate. Some of the fumes adhere to the baffle plate, causing grease to accumulate. Over time, this can produce unpleasant odors and is very inconvenient to clean. Utility Model Content

[0003] To address the problem in existing technologies where cooking fumes directly contact the baffle plate of the range hood, causing some fumes to adhere to the baffle plate and accumulate oil stains, this utility model provides an air-film range hood.

[0004] This application provides an air-film range hood, including an air extraction component, a baffle plate, and an air-film component for extracting cooking fumes; the baffle plate is connected to the air extraction component; the air-film component is disposed on the baffle plate; wherein, on the side of the baffle plate that is close to the cooking fumes, the air-film component forms an air film on the surface of the baffle plate by blowing air to reduce direct contact between the cooking fumes and the baffle plate.

[0005] In some embodiments, the guide plate includes a connection port, a guide portion, and a suction port. The connection port is disposed at one end of the guide portion and is used to connect to the air extraction assembly. The suction port is disposed at the end of the guide portion away from the connection port.

[0006] Along the connection port to the suction port, the diameter of the guide portion gradually increases, and the air film assembly is arranged along the edge of the suction port.

[0007] In some embodiments, the air film assembly has an airflow cavity and an air blowing channel inside, the airflow cavity is connected to the air blowing channel, the air blowing channel is used to blow out airflow to form the air film, and the air blowing channel is tangent to the surface of the guide portion that is close to the oil fume side.

[0008] In some embodiments, the connection between the air blowing channel and the airflow cavity is provided with a rounded chamfer structure.

[0009] In some embodiments, the air film assembly includes a pneumatic part and an air cavity part, the air cavity part being provided with the airflow cavity and the blowing channel, and the pneumatic part communicating with the airflow cavity.

[0010] In some embodiments, there are multiple pneumatic components, which are symmetrically distributed relative to the air cavity.

[0011] In some embodiments, the air film assembly further includes a closure member, which is movably connected to the air cavity portion. The closure member is disposed at the airflow outlet of the air blowing channel, and the closure member can be moved from a closed state to an open state.

[0012] When the closure component is in the closed state, it closes the air blowing channel.

[0013] In some embodiments, the pneumatic unit includes a housing, a fan, and a filter. The fan is disposed inside the housing, and the housing has an air inlet. The filter is disposed at the air inlet to filter the air entering the pneumatic unit.

[0014] In some embodiments, the filter element includes a pressure ring and a filter body, the air inlet has a pressing portion, the pressure ring is sealed and pressed with the pressing portion, and the filter body is pressed between the pressure ring and the pressing portion.

[0015] In some embodiments, one of the pressure ring and the filter body is provided with a protrusion, and the other of the pressure ring and the filter body is provided with a through hole, and the protrusion engages with the through hole.

[0016] Compared with the prior art, the beneficial effects of this utility model embodiment of an air-film range hood are as follows: The air-film range hood provided in this application includes an extraction component, a guide plate, and an air-film component. The extraction component is used to extract cooking fumes; the guide plate is connected to the extraction component and is a component on the range hood used to guide and collect cooking fumes, facilitating their entry into the extraction component; the air-film component is disposed on the guide plate; wherein, on the side of the guide plate closest to the cooking fumes, the air-film component forms an air film on the surface of the guide plate by blowing air to reduce direct contact between the cooking fumes and the guide plate. Through the above design, an air film is formed on the surface of the guide plate on the side in contact with the cooking fumes by blowing air. When the cooking fumes drift towards the guide plate surface, they will contact the air film first, and the air film will immediately blow the cooking fumes into the extraction component for absorption, thereby providing good protection for the surface of the guide plate and effectively reducing the pollution of the guide plate surface by cooking fumes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application;

[0018] Figure 2 This is a cross-sectional structural schematic diagram of one embodiment of the guide vane provided in this application;

[0019] Figure 3 This is a cross-sectional planar schematic diagram of one embodiment of the guide vane provided in this application;

[0020] Figure 4 yes Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0021] Figure 5 This is a partial structural breakdown diagram of one embodiment of this application;

[0022] Figure 6 yes Figure 5 Enlarged schematic diagram of the structure at point B;

[0023] Figure 7 This is a disassembled structural diagram of an embodiment of the filter provided in this application.

[0024] 100. Air extraction assembly; 200. Flow deflector; 21. Connection port; 22. Flow guide section; 23. Suction port; 300. Air film assembly; 31. Pneumatic part; 311. Housing; 03. Air inlet; 04. Pressing part; 312. Filter element; 01. Pressure ring; 011. Protrusion; 02. Filter body; 021. Through hole; 32. Air chamber section; 321. Air blowing channel; 322. Airflow chamber; 323. Rounded chamfer structure; 33. Sealing element. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the present invention 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 the present invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0030] The present invention will now be described in further detail with reference to the accompanying drawings.

[0031] like Figure 1 The illustrated air-film range hood includes an extraction assembly 100, a baffle plate 200, and an air-film assembly 300. The extraction assembly 100 is used to extract cooking fumes. The baffle plate 200 is connected to the extraction assembly 100 and is a component on the range hood used to guide and collect cooking fumes, facilitating their entry into the extraction assembly 100. The air-film assembly 300 is disposed on the baffle plate 200. On the side of the baffle plate 200 closest to the cooking fumes, the air-film assembly 300 forms an air film on the surface of the baffle plate 200 by blowing air to reduce direct contact between the cooking fumes and the baffle plate 200. Through the above design, an air film is formed on the surface of the guide plate 200 on the side that comes into contact with the oil fume by blowing air. When the oil fume drifts to the surface of the guide plate 200, it will first come into contact with the air film. The air film will immediately blow the oil fume into the suction component 100 and suck it away, thus playing a good protective role for the surface of the guide plate 200 and effectively reducing the pollution of the surface of the guide plate 200 by oil fume.

[0032] The technical details of each component will be introduced below.

[0033] In some implementations, such as Figure 1 , Figure 2 , Figure 3As shown, the aforementioned baffle 200 includes a connection port 21, a baffle portion 22, and a suction port 23. The connection port 21 is located at one end of the baffle portion 22 and is specifically used as an interface for connecting to the extraction assembly 100. The suction port 23 is located at the end of the baffle portion 22 away from the connection port 21. The suction port 23 is used to guide and collect the fumes. The diameter of the baffle portion 22 gradually increases from the connection port 21 to the suction port 23, forming a trapezoidal structure. In this way, when the fumes drift towards the baffle 200, they will rise and collect along the trapezoidal structure so that they can be sucked out of the room by the extraction assembly 100. The aforementioned air film assembly 300 is arranged along the edge of the suction port 23. The air film assembly 300 generates an airflow from the suction port 23 to the connection port 21 on the surface of the guide plate 200. This airflow forms an air film on the surface of the guide plate 200. After the oil fumes come into contact with the air film, they are blown towards the connection port 21 and then sucked away by the suction assembly 100. Through the above process, the surface of the guide plate 200 can be protected by the air film generated by the air film assembly 300, effectively reducing the contact between the oil fumes and the surface of the guide plate 200, thereby reducing the pollution of the surface of the guide plate 200 by the oil fumes.

[0034] In some implementations, such as Figure 1 , Figure 2 , Figure 3 As shown, the air film assembly 300 is provided with an airflow chamber 322 and an air blowing channel 321. The airflow chamber 322 is connected to the air blowing channel 321. The air blowing channel 321 is used to blow out airflow to form an air film. The air blowing channel 321 is tangent to the surface of the guide section 22 near the oil fume. Both the airflow chamber 322 and the air blowing channel 321 are arranged around the edge of the side where the suction port 23 of the guide plate 200 is located. The air blowing channel 321 blows out airflow from the suction port 23 to the connection port 21 in a state of being tangent to the surface of the guide plate 200, thereby reducing the generation of turbulence and making the air film formed on the surface of the guide plate 200 more uniform and stable. In addition, the air blowing channel 321 is tangent to the surface of the guide plate 200, which can also reduce the impact of airflow on the surface of the guide plate 200, thereby reducing the noise during equipment operation.

[0035] In some implementations, such as Figure 2 , Figure 3 , Figure 4 As shown, a rounded chamfer structure 323 is provided at the connection between the air blowing channel 321 and the airflow cavity 322. When the airflow enters the air blowing channel 321 from the airflow cavity 322, the rounded chamfer structure 323 allows the airflow to transition smoothly, thereby reducing the generation of turbulence. This helps to ensure the uniformity and stability of the airflow blown out of the air blowing channel 321, which in turn helps to ensure the uniformity and stability of the formed air film, and improves the protective effect of the air film on the surface of the guide plate 200.

[0036] In some implementations, such as Figure 1 , Figure 5As shown, the aforementioned air film assembly 300 includes a pneumatic part 31 and an air chamber part 32. The air chamber part 32 is provided with an airflow chamber 322 and an air blowing channel 321. The pneumatic part 31 is connected to the airflow chamber 322, and a fan is provided inside the pneumatic part 31 to generate airflow. The airflow generated by the pneumatic part 31 enters the airflow chamber 322 and is then blown out from the air blowing channel 321. Since the air blowing channel 321 is relatively long, the airflow velocity of different parts may be different. The airflow chamber 322 can uniformly distribute the airflow, making the airflow entering the air blowing channel 321 more uniform. This helps to ensure the uniformity and stability of the airflow blown out of the air blowing channel 321, which in turn helps to ensure the uniformity and stability of the formed air film and improves the protective effect of the air film on the surface of the guide plate 200.

[0037] In some implementations, such as Figure 1 As shown, there are multiple pneumatic parts 31, which are symmetrically distributed relative to the air cavity 32. The design of multiple pneumatic parts 31 allows airflow to enter the air cavity 32 from multiple directions, thereby making the airflow distribution in the air cavity 32 more uniform. This helps to ensure the uniformity and stability of the airflow blown out of the blowing channel 321, which in turn helps to ensure the uniformity and stability of the formed air film, and improves the protective effect of the air film on the surface of the guide plate 200.

[0038] In some implementations, such as Figure 3 , Figure 4 As shown, the air film assembly 300 also includes a sealing member 33, which is movably connected to the air cavity 32. The sealing member 33 is disposed at the airflow outlet of the air blowing channel 321, and the sealing member 33 can move from a closed state to an open state. When the sealing member 33 is in the closed state, the sealing member 33 closes the air blowing channel 321.

[0039] In actual use, particles, insects, and other objects in the external environment may enter the air chamber 32 through the air blowing channel 321, causing blockage and affecting the protective effect of the air film on the surface of the guide plate 200. By setting a sealing member 33 at the air outlet of the air blowing channel 321, the air outlet of the air blowing channel 321 can be sealed when there is no airflow, thereby effectively blocking particles, insects, and other objects in the external environment. Generally, the sealing member 33 can be made of materials with good elasticity and deformation ability, such as silicone or rubber. When the air pressure inside the air blowing channel 321 reaches a predetermined level, it will open the sealing member 33 to form an air film on the surface of the guide plate 200. When the air pressure inside the air blowing channel 321 is lower than the predetermined level, the sealing member 33 will close the air outlet of the air blowing channel 321 under its own elasticity.

[0040] In some implementations, such as Figure 5 , Figure 6As shown, the pneumatic unit 31 includes a housing 311, a fan, and a filter 312. The fan is disposed inside the housing 311 to generate airflow. An air inlet 03 is provided on the housing 311 for filtering the air entering the pneumatic unit 31.

[0041] In practical applications, many impurities exist in the external environment. These impurities may enter the range hood through the air inlet 03 of the pneumatic unit 31, thus posing some potential hazards to the fumes. Specifically, if particles, flying insects, or other objects from the external environment enter the pneumatic unit 31 and then follow the airflow into the air chamber 32, they may block the air blowing channel 321, severely affecting the formation of the air film and consequently affecting the protection of the surface of the guide plate 200. By installing a filter element 312 at the air inlet 03 to filter the gas entering the pneumatic unit 31, it is possible to effectively prevent particles, flying insects, and other impurities from the external environment from entering the pneumatic unit 31, thus providing a good guarantee for the range hood itself and the protection of the air film.

[0042] In some implementations, such as Figure 5 , Figure 6 As shown, the filter element 312 includes a pressure ring 01 and a filter body 02. The pressure ring 01 can be a ring, and the filter body 02 can be a filter screen or filter cloth. The air inlet 03 has a pressing part 04, and the pressure ring 01 is sealed and pressed with the pressing part 04. The filter body 02 is pressed between the pressure ring 01 and the pressing part 04. This design allows for easy disassembly of the filter element 312. In actual use, after a period of use, the filter body 02 accumulates too much dust and other impurities, which affects the air intake effect of the filter element 312. Therefore, the filter body 02 needs to be replaced periodically. The above method makes it very convenient to replace the filter body 02.

[0043] In some implementations, such as Figure 7 As shown, one of the pressure ring 01 and the filter body 02 is provided with a protrusion 011, and the other of the pressure ring 01 and the filter body 02 is provided with a through hole 021. The protrusion 011 engages with the through hole 021. When the protrusion 011 passes through the through hole 021 and the pressure ring 01 is pressed against the pressing part 04, the protrusion 011 can fix the edge of the filter body 02, preventing the filter body 02 from shifting due to the suction of the air inlet 03 during use, thereby affecting the filtration effect on the air entering the pneumatic part 31.

[0044] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A type of air-film range hood, characterized in that, include: A fume extraction assembly (100) is used to extract cooking fumes. A deflector plate (200) is connected to the air extraction assembly (100); An air film assembly (300) is disposed on the guide plate (200); In the case of the guide plate (200) on the side near the oil fume, the air film assembly (300) forms an air film on the surface of the guide plate (200) by blowing air to reduce the direct contact between the oil fume and the guide plate (200).

2. The air-film range hood according to claim 1, characterized in that, The guide plate (200) includes a connection port (21), a guide section (22) and a suction port (23). The connection port (21) is located at one end of the guide section (22) and is used to connect the air extraction assembly (100). The suction port (23) is located at the end of the guide section (22) away from the connection port (21). Along the connection port (21) to the suction port (23), the diameter of the guide part (22) gradually increases, and the air film assembly (300) is arranged along the edge of the suction port (23).

3. The air-film range hood according to claim 2, characterized in that, The air film assembly (300) is provided with an airflow chamber (322) and an air blowing channel (321) inside. The airflow chamber (322) is connected to the air blowing channel (321). The air blowing channel (321) is used to blow out airflow to form the air film. The air blowing channel (321) is tangent to the surface of the guide part (22) on the side close to the oil fume.

4. The air-film range hood according to claim 3, characterized in that, The air blowing channel (321) and the airflow cavity (322) are provided with a rounded chamfer structure (323).

5. The air-film range hood according to claim 3, characterized in that, The air film assembly (300) includes a pneumatic part (31) and an air cavity part (32). The air cavity part (32) is provided with the airflow cavity (322) and the air blowing channel (321). The pneumatic part (31) is connected to the airflow cavity (322).

6. The air-film range hood according to claim 5, characterized in that, The number of pneumatic parts (31) is multiple, and the multiple pneumatic parts (31) are symmetrically distributed relative to the air cavity part (32).

7. The air-film range hood according to claim 5, characterized in that, The air film assembly (300) also includes a sealing member (33), which is movably connected to the air cavity (32). The sealing member (33) is located at the airflow outlet of the air blowing channel (321), and the sealing member (33) can move from a closed state to an open state. When the closure member (33) is in the closed state, the closure member (33) closes the air blowing channel (321).

8. The air-film range hood according to claim 5, characterized in that, The pneumatic unit (31) includes a housing (311), a fan, and a filter (312). The fan is located inside the housing (311), and an air inlet (03) is provided on the housing (311). The filter (312) is located at the air inlet (03) to filter the air entering the pneumatic unit (31).

9. The air-film range hood according to claim 8, characterized in that, The filter element (312) includes a pressure ring (01) and a filter body (02). The air inlet (03) has a pressing part (04). The pressure ring (01) and the pressing part (04) are sealed and pressed together. The filter body (02) is pressed between the pressure ring (01) and the pressing part (04).

10. The air-film range hood according to claim 9, characterized in that, One of the pressure ring (01) and the filter body (02) is provided with a protrusion (011), and the other of the pressure ring (01) and the filter body (02) is provided with a through hole (021), and the protrusion (011) engages with the through hole (021).

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