Air detection assembly and range hood

Abstract

This utility model provides an air detection component and a range hood, relating to the technical field of kitchen appliances. The air detection component provided by this utility model includes: a detector and a flow channel structure. The detector includes a first air inlet, which is either the detector's air inlet or outlet. The flow channel structure includes a first opening, a second opening, and a first flow channel connecting the first opening and the second opening. The second opening is connected to the first air inlet. The first opening is located above the second opening. A first receiving structure is provided inside the first flow channel, and the vertical downward projection of the first opening falls completely within the first receiving structure.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to an air detection component and a range hood. Background Technology

[0002] Range hoods have become an indispensable kitchen appliance in daily life. They are typically installed above the stovetop in the kitchen to quickly extract the fumes produced during cooking.

[0003] In order to detect the concentration of particulate matter with an equivalent diameter of less than or equal to 2.5 micrometers in the air, the prior art also installs a PM2.5 detector on the range hood. However, when the PM2.5 detector is installed on the smoke collection hood of the range hood, the detection air inlet of the PM2.5 detector is located on the upper surface of the smoke collection hood.

[0004] However, water vapor generated during cooking and cleaning agents used by users when wiping the fume hood can easily flow into the air inlet of the PM2.5 detector, potentially damaging the detector and affecting its detection results. Utility Model Content

[0005] The purpose of this invention is to provide an air detection component and a range hood, which to a certain extent solves the technical problem in the prior art of liquid entering the PM2.5 detector and causing damage to it.

[0006] In a first aspect, the present invention provides an air detection component, comprising: a detector and a flow channel structure, wherein the detector includes a first air port, which is either an air inlet or an air outlet of the detector; The flow channel structure includes a first opening, a second opening, and a first flow channel connecting the first opening and the second opening, wherein the second opening is connected to the first air port; The first opening is located above the second opening; a first receiving structure is provided inside the first flow channel, and the projection of the first opening downwards in the vertical direction falls completely within the first receiving structure.

[0007] Furthermore, the first opening and the second opening are offset in the horizontal direction; And / or, the first receiving structure includes a first slope, a portion of the edge of the first slope is connected to the inner wall of the first flow channel and forms a first sealing area; the portion of the edge of the first slope that is not connected to the inner wall of the first flow channel forms a first guiding area with the inner wall of the first flow channel, so that the first opening is connected to the second opening through the first guiding area. Furthermore, in the horizontal direction, along the direction from the first sealing area toward the first flow guiding area, the first slope is inclined upwards.

[0008] Furthermore, the detector includes a second air port, and the first air port and the second air port are located on the same surface; the first air port is the air inlet of the detector, and the second air port is the air outlet of the detector. The flow channel structure includes a third opening, a fourth opening, and a second flow channel connecting the third opening and the fourth opening, with the fourth opening connected to the second air inlet; The third opening is located above the fourth opening; a second receiving structure is provided inside the second flow channel, and the projection of the third opening downwards in the vertical direction falls entirely within the second receiving structure.

[0009] Furthermore, the third and fourth openings are offset in the horizontal direction; And / or, the second receiving structure includes a second slope, a portion of the edge of the second slope is connected to the inner wall of the second flow channel and forms a second sealing area; the portion of the edge of the second slope that is not connected to the inner wall of the second flow channel forms a second guiding area with the inner wall of the second flow channel, so that the third opening communicates with the fourth opening through the second guiding area. Furthermore, in the horizontal direction, along the direction from the second sealing area toward the second flow guiding area, the second slope is inclined upwards.

[0010] Furthermore, the flow channel structure includes a mounting bracket and a cover plate, with the cover plate connected to the top of the mounting bracket; The first and third openings are both located on the cover plate; the first and second receiving structures, the second and fourth openings are both located on the mounting bracket; the cover plate and the mounting bracket form the first and second flow channels.

[0011] Furthermore, a first sealing gasket is provided between the mounting bracket and the cover plate.

[0012] Furthermore, the mounting bracket is provided with a first boss that protrudes toward the cover plate and surrounds the first opening, and a second boss that surrounds the third opening; The first sealing gasket is provided with a first limiting hole and a second limiting hole corresponding to the first boss and the second boss, respectively.

[0013] Furthermore, a second sealing gasket is provided between the bottom of the mounting bracket and the detector; And / or, the mounting bracket is provided with two L-shaped positioning bosses arranged diagonally for positioning the detector at two opposite corners; And / or, the area of ​​the second opening is smaller than the area of ​​the fourth opening; And / or, the air detection assembly also includes a filter screen, and a positioning groove for receiving the filter screen is provided on the side of the cover plate facing the mounting bracket. A first opening penetrates part of the bottom surface of the positioning groove, and a positioning post is provided on the bottom surface of the positioning groove. A first through hole is provided on the filter screen to connect with the positioning post, and a limit cap is provided on the free end of the positioning post to prevent the filter screen from leaving the positioning post. The filter screen covers the first opening. And / or, a positioning structure is provided between the mounting bracket and the cover plate; And / or, a foolproof structure is provided between the mounting bracket and the cover plate.

[0014] Furthermore, the first air port is the air inlet of the detector; The first receiving structure includes a water collection tank, the opening of which faces the first air inlet.

[0015] Furthermore, the detector includes a second air port; the second air port is the air outlet of the detector; The flow channel structure includes a third opening, a fourth opening, and a second flow channel connecting the third opening and the fourth opening, wherein the fourth opening is connected to the second air port.

[0016] Furthermore, the flow channel structure includes a box body and a cover plate, the top surface of the box body having an opening; the cover plate is connected to the opening of the box body, and the first opening is disposed on the cover plate; The box body is provided with a partition, and the inner cavity formed by the box body and the cover plate is divided into a first flow channel and a second flow channel by the partition; the partition plate is provided with a mounting hole connecting the first flow channel and the second flow channel, and one end of the mounting hole connecting with the first flow channel forms a second opening, and one end of the mounting hole connecting with the second flow channel forms a fourth opening; the detector is located in the mounting hole, and the first air port of the detector is located in the first flow channel, and the second air port is located in the second flow channel; the box body and / or the cover plate is provided with a third opening connecting the second flow channel and the outside; The first air inlet is higher than the bottom surface of the box body, and the side wall of the detector and the inner wall of the box body form the water collection tank.

[0017] Secondly, the range hood provided by this utility model includes the aforementioned air detection component.

[0018] This utility model has at least the following advantages or beneficial effects: The air detection component provided by this utility model includes: a detector and a flow channel structure. The detector includes a first air port, which is either the air inlet or the air outlet of the detector. The flow channel structure includes a first opening, a second opening, and a first flow channel connecting the first opening and the second opening. The second opening is connected to the first air port. The first opening is located above the second opening. A first receiving structure is provided in the first flow channel, and the projection of the first opening downward in the vertical direction falls completely within the first receiving structure.

[0019] In actual use, if liquid enters the flow channel structure from the first opening, the liquid will fall vertically onto the first receiving structure under the action of gravity, thereby preventing the liquid flowing in from the first opening from directly entering the detector through the first flow channel and causing damage to the detector.

[0020] The range hood provided by this utility model includes the aforementioned air detection component. Because the range hood provided by this utility model incorporates the aforementioned air detection component, it also possesses the advantages of the air detection component. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 A schematic diagram of a range hood equipped with the air detection component provided in Embodiment 1 of this utility model; Figure 2 An exploded view of the air detection component provided in Embodiment 1 of this utility model from one angle; Figure 3 This is an exploded view of the air detection component provided in Embodiment 1 of this utility model from another angle; Figure 4 A schematic diagram of the detector of the air detection component provided in Embodiment 1 of this utility model; Figure 5 A schematic diagram of the cover plate of the air detection component provided in Embodiment 1 of this utility model at one angle; Figure 6 This is a schematic diagram of the cover plate of the air detection component provided in Embodiment 1 of this utility model from another angle; Figure 7 A schematic diagram of the first sealing gasket of the air detection assembly provided in Embodiment 1 of this utility model; Figure 8A schematic diagram of the mounting bracket for the air detection component provided in Embodiment 1 of this utility model from one angle; Figure 9 This is a schematic diagram of the mounting bracket for the air detection component provided in Embodiment 1 of this utility model from another angle; Figure 10 A cross-sectional view of the first flow channel of the air detection assembly provided in Embodiment 1 of this utility model; Figure 11 A cross-sectional view of the second flow channel of the air detection assembly provided in Embodiment 1 of this utility model; Figure 12 A schematic diagram of a range hood equipped with the air detection component provided in Embodiment 2 of this utility model; Figure 13 An exploded view of the air detection component provided in Embodiment 2 of this utility model; Figure 14 This is a schematic diagram of the interior of the housing of the air detection component provided in Embodiment 2 of this utility model.

[0023] Icons: 1-Smoke hood; 2-Air detection component; 21-Detector; 211-First air port; 212-Second air port; 22-Cover plate; 221-First opening; 222-Third opening; 223-Positioning groove; 224-Positioning post; 225-Protrusion; 226-Blind hole; 227-Second through hole; 23-Mounting bracket; 231-First receiving structure; 232-Second receiving structure; 233-Second opening; 234-Fourth opening; 235-First boss; 236-Second boss; 237-L-shaped positioning boss; 238-Third boss; 239-Limiting post; 24-First sealing gasket; 241-First limiting hole; 242-Second limiting hole; 25 - Second sealing gasket; 26-Filter screen; 27-Water collection tank; 281-Bracket; 282-Lower cover; 283-Frame; 2831-Partition. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[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] In the description of this utility model, 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 of this utility model is in use. They are only for the convenience of describing this utility model 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 utility model. 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" and "vertical" 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 than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] 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.

[0030] Example 1 like Figure 1 As shown, the air detection component 2 provided by this utility model can be installed on kitchen appliances, such as on the smoke collection hood 1 of a range hood, or on other cooking equipment, such as a steam oven.

[0031] The air detection component 2 includes: a detector 21 and a flow channel structure.

[0032] Among them, detector 21 can be, but is not limited to, a PM2.5 detector.

[0033] like Figure 4 As shown, the detector 21 includes a first air inlet 211 and a second air inlet 212. In this embodiment, the first air inlet 211 is the air inlet of the detector 21, and the second air inlet 212 is the air outlet of the detector 21. In other possible implementation schemes, the first air inlet 211 can also be the air outlet of the detector 21.

[0034] like Figure 10 As shown, the flow channel structure includes a first opening 221, a second opening 233, and a first flow channel connecting the first opening 221 and the second opening 233. The second opening 233 is connected to the first air inlet 211. After the fan inside the detector 21 is started, outside air flows in through the first opening 221, then flows out through the second opening 233 and enters the detector 21.

[0035] The first opening 221 is located above the second opening 233. A first receiving structure 231 is provided in the first flow channel. The projection of the first opening 221 downward in the vertical direction falls completely into the first receiving structure 231, so that the liquid falling from the first opening 221 will only fall into the first receiving structure 231 under the action of gravity, and will not enter the detector 21 through the second opening 233.

[0036] Generally, the air detection component 2 is installed on the top surface of the smoke hood 1, and the first opening 221 faces directly upward. Water vapor or liquid generated when wiping the smoke hood 1 enters the first opening 221. Under the action of gravity, the liquid falls vertically onto the first receiving structure 231, thereby preventing the liquid flowing in from the first opening 221 from directly entering the detector 21 through the first flow channel and causing damage to the detector 21.

[0037] In another possible implementation, the first opening 221 and the second opening 233 can be configured to be vertically aligned or not completely misaligned, but the first receiving structure 231 still completely blocks the first opening 221. The air turns at the first opening 221, then turns again after passing through the first receiving structure 231, and then enters the second opening 233.

[0038] In this embodiment, such as Figure 10 As shown, the first opening 221 and the second opening 233 are completely offset in the horizontal direction. In this way, the air turns at the first opening 221 and then enters the second opening 233 directly after passing through the first receiving structure 231, thus reducing air resistance.

[0039] Specifically, such as Figure 8 and Figure 10As shown, the cross-sectional shape of the first flow channel is approximately rectangular, and the first receiving structure 231 includes a first slope, which is also approximately rectangular. Three edges of the first slope connect to the three inner walls of the first flow channel, forming a first sealing area. The fourth edge of the first slope is not connected to the inner wall of the first flow channel, thus this edge of the first slope and the inner wall of the first flow channel enclose a first guiding area. Air flowing in from the first opening 221 is blocked by the first sealing area, then redirected to pass through the first guiding area, and finally flows out from the second opening 233. Furthermore, in the horizontal direction, along the direction from the first sealing area towards the first guiding area, the first slope slopes upwards. This means that the first slope can play a certain role in preserving liquid; liquid falling on the first slope will flow to a lower position. When the liquid level on the first liquid surface is not higher than the highest point of the first slope, the liquid will not flow out from the first slope. The liquid within the first slope gradually evaporates over time.

[0040] In this embodiment, as Figure 11 As shown, the first air inlet 211 and the second air inlet 212 are located on the same plane, that is, on the top surface of the detector 21, and the bottom surface of the flow channel structure is connected to the top surface of the detector 21. The flow channel structure includes a third opening 222, a fourth opening 234, and a second flow channel connecting the third opening 222 and the fourth opening 234. The fourth opening 234 is connected to the second air inlet 212. The first flow channel and the second flow channel are arranged side by side in a horizontal direction. The first opening 221 and the third opening 222 both face upwards, and the second opening 233 and the fourth opening 234 both face downwards.

[0041] Similar to the internal arrangement of the first flow channel, the second flow channel is also provided with a second receiving structure 232. The projection of the third opening 222 downward in the vertical direction falls completely within the second receiving structure 232. The second receiving structure 232 receives the liquid left from the third opening 222, preventing the liquid from flowing into the detector 21 from the fourth opening 234.

[0042] In another possible implementation, the third opening 222 and the fourth opening 234 can be configured to be vertically aligned or not completely misaligned; however, the second receiving structure 232 still completely blocks the third opening 222. The detected air turns at the fourth opening 234, then turns again after passing through the second receiving structure 232, and then exits from the third opening 222.

[0043] In this embodiment, such as Figure 11 As shown, the third opening 222 and the fourth opening 234 are completely offset in the horizontal direction. In this way, the air turns after passing through the second receiving structure 232, and there is no need to turn between the fourth opening 234 and the second receiving structure 232, which reduces air resistance.

[0044] Specifically, such as Figure 8 and Figure 11 As shown, the cross-sectional shape of the second flow channel is approximately rectangular, and the second receiving structure 232 includes a second slope, which is also approximately rectangular. Three edges of the second slope connect to the three inner walls of the second flow channel, forming a second sealing area. The fourth edge of the second slope is not connected to the inner wall of the second flow channel, thus this edge of the second slope and the inner wall of the second flow channel enclose a second guiding area. Air flowing out from the fourth opening 234 passes through the second guiding area, then turns and flows back to the fourth opening 234 before being discharged. Furthermore, in the horizontal direction, along the direction from the second sealing area towards the second guiding area, the second slope slopes upwards. This means that the second slope can play a role in preserving liquid; liquid falling on the second slope will flow to a lower position. When the liquid level on the second liquid surface is not higher than the highest point of the second slope, the liquid will not flow out from the second slope. The liquid within the second slope gradually evaporates over time.

[0045] like Figure 2 and Figure 3 As shown, the flow channel structure includes a mounting bracket 23 and a cover plate 22, with the cover plate 22 connected to the top of the mounting bracket 23. Figure 5 As shown, both the first opening 221 and the third opening 222 are located on the cover plate 22. Figure 8 and Figure 9 As shown, the first receiving structure 231, the second receiving structure 232, the second opening 233, and the fourth opening 234 are all provided on the mounting bracket 23; the cover plate 22 and the mounting bracket 23 form the first flow channel and the second flow channel.

[0046] To facilitate the processing of the first receiving structure 231 and the second receiving structure 232, the flow channel structure is set as an assembly structure, that is, it is assembled by mounting bracket 23 and cover plate 22.

[0047] like Figure 7 and Figure 8 As shown, a first sealing gasket 24 is provided between the mounting bracket 23 and the cover plate 22. The left side of the first sealing gasket 24 is provided with positioning holes, and there can be two of them. The top left side of the mounting bracket 23 is provided with limit posts 239, and the number of them corresponds one-to-one with the positioning holes. These are used to limit the position of the first sealing gasket 24 and facilitate the positioning connection between the first sealing gasket 24 and the mounting bracket 23.

[0048] like Figure 8As shown, the left side of the mounting bracket 23 corresponds to the first flow channel position, and the right side corresponds to the second flow channel position. The mounting bracket 23 has a first boss 235 protruding towards the cover plate 22 and surrounding the first opening 221, and a second boss 236 surrounding the third opening 222. Correspondingly, the first sealing gasket 24 has a first limiting hole 241 and a second limiting hole 242 corresponding to the first boss 235 and the second boss 236, respectively. Taking the first boss 235 and the first limiting hole 241 (the second boss 236 and the second limiting hole 242 have the same mating method) as an example, the first boss 235 is inserted into the first limiting hole 241, and the wall of the first limiting hole 241 fits against the circumferential outer wall of the first boss 235. This facilitates the positioning of the first sealing gasket 24 while preventing the first sealing gasket 24 from shifting and blocking the first opening 221 and the second opening 233, thus affecting the testing effect of the detector 21.

[0049] like Figure 3 and Figure 9 As shown, a second sealing gasket 25 is provided between the bottom of the mounting bracket 23 and the detector 21 to improve sealing performance and prevent air leakage. A third protrusion 238 can be provided on the mounting bracket 23 around the second opening 233. The second sealing gasket 25 is provided with a third limiting hole corresponding to the third protrusion 238. The third protrusion 238 is inserted into the third limiting hole, and the wall of the third limiting hole fits against the circumferential outer wall of the third protrusion 238. This facilitates the positioning of the third sealing gasket while preventing the second sealing gasket 25 from being misaligned and blocking the third opening 222 and the fourth opening 234, thus affecting the testing effect of the detector 21.

[0050] like Figures 9-11 As shown, the mounting bracket 23 is provided with two L-shaped positioning bosses 237 arranged diagonally. The two L-shaped positioning bosses 237 limit the detector 21 in space. When the detector 21 is placed between the two L-shaped positioning bosses 237, the two L-shaped positioning bosses 237 limit the detector 21 in the horizontal direction, preventing it from moving relative to the mounting bracket 23 in the horizontal direction.

[0051] like Figure 9 As shown, the area of ​​the second opening 233 is smaller than that of the fourth opening 234. The smaller air inlet area increases the air intake speed, allowing the gas to be measured to be quickly absorbed by the detector 21, thereby increasing the reliability and accuracy of gas detection.

[0052] like Figure 3 and Figure 6As shown, the air detection assembly 2 also includes a filter screen 26. A positioning groove 223 for accommodating the filter screen 26 is provided on the side of the cover plate 22 facing the mounting bracket 23. A first opening 221 penetrates part of the bottom surface of the positioning groove 223. A positioning post 224 is provided on the bottom surface of the positioning groove 223. The filter screen 26 has a first through hole connected to the positioning post 224. A limit cap is provided at the free end of the positioning post 224 to prevent the filter screen 26 from leaving the positioning post 224. The filter screen 26 covers the first opening 221. After the filter screen 26 is installed, the positioning post 224 can be melted to form a limit cap. The diameter of the limit cap is larger than the diameter of the first through hole, preventing the filter screen 26 from being removed from the positioning post 224, thus fixing the filter screen 26 to the cover plate 22.

[0053] like Figure 5 As shown, the cover plate 22 has four second through holes 227 around its perimeter for fixed connection with the mounting bracket 23 by fasteners (screws).

[0054] like Figure 6 As shown, a positioning structure is provided between the mounting bracket 23 and the cover plate 22. The positioning structure includes two blind holes 226 provided on the left side of the cover plate 22, which are used to assemble with the limiting post 239 of the mounting bracket 23 to limit the position and facilitate installation.

[0055] like Figure 6 As shown, a foolproof structure is provided between the mounting bracket 23 and the cover plate 22. The foolproof structure includes two protrusions 225 on the left side of the cover plate 22, which cooperate with the structure at the corresponding position of the mounting bracket 23. If the installation direction is incorrect, the mounting bracket 23 cannot be assembled with the cover plate 22.

[0056] Example 2 like Figures 12-14 As shown, the difference from Embodiment 1 is that: the first air port 211 is the air inlet of the detector 21; the first receiving structure 231 includes a water collection tank 27, the opening of which faces the first air port 211.

[0057] Generally, the air detection component 2 is installed on the top surface of the smoke hood 1, and the first opening 221 faces directly upward. Water vapor or liquid generated when wiping the smoke hood 1 enters the first opening 221. Under the action of gravity, the liquid falls vertically into the water collection tank 27, thereby preventing the liquid from entering the detector 21 and causing damage to the detector 21.

[0058] The detector 21 includes a second air port 212, which is the outlet of the detector 21. The flow channel structure includes a third opening 222, a fourth opening 234, and a second flow channel connecting the third opening 222 and the fourth opening 234. The fourth opening 234 is connected to the second air port 212. Gas flowing out of the outlet of the detector 21 passes through the second flow channel and is discharged from the third opening 222. The gas is guided out through the second flow channel to prevent detected gas from re-entering the detector 21.

[0059] Specifically, the flow channel structure includes a housing and a cover plate 22. The housing can be assembled from two parts: a lower cover 282 and a middle frame 283. A partition 2831 is provided in the middle of the frame 283. The detector 21 is placed inside the lower cover 282 and the two are connected by fasteners (e.g., screws). The lower opening of the frame 283 mates with the top opening of the lower cover 282, and the two can be connected by snap-fit. The partition plate 2831 presses against the middle of the detector 21, so that the two parts of the detector 21 are respectively located in two areas separated by the partition plate 2831. Then, the top opening of the frame 283 is closed by the cover plate 22. The first opening 221 on the cover plate 22 communicates with the right-side area.

[0060] The inner cavity formed by the box body and the cover plate 22 is divided into a first flow channel and a second flow channel by the partition plate 2831. The partition plate 2831 is provided with a mounting hole that connects the first flow channel and the second flow channel. One end of the mounting hole that connects to the first flow channel forms a second opening 233, and the other end of the mounting hole that connects to the second flow channel forms a fourth opening 234. The detector 21 is located in the mounting hole, thereby enabling the first flow channel and the second flow channel to be connected to the inlet and outlet of the detector 21, respectively.

[0061] The third opening 222, which connects the second flow channel to the outside, can be located on the cover plate 22 or on the frame 283. In this embodiment, the third opening 222 is located on the frame 283 and faces the front panel of the smoke hood, allowing gas to enter the smoke hood after it is detected and discharged.

[0062] The first air vent 211 is higher than the bottom surface of the box body, and its right end face is spaced apart from the right side wall of the box body, forming a water collection trough 27 in the spaced area. The first opening 221 is located directly above the water collection trough 27.

[0063] To improve sealing, a first sealing gasket is provided between the cover plate 22 and the frame 283.

[0064] It also includes a bracket 281, which is connected to the flow channel structure by fasteners (e.g., screws) and to the smoke hood by fasteners (e.g., screws).

[0065] The range hood provided by this utility model includes the aforementioned air detection component 2. Because the range hood provided by this utility model incorporates the aforementioned air detection component 2, it also possesses the advantages of the air detection component 2.

[0066] The top of the smoke collection hood 1 of the range hood is provided with an installation groove, and the side wall of the air detection component 2 is provided with a buckle. The air detection component 2 and the smoke collection hood 1 are connected by the buckle.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An air detection component, characterized in that, include: The detector (21) and the flow channel structure, wherein the detector (21) includes a first air port (211), the first air port (211) being the air inlet or air outlet of the detector (21); The flow channel structure includes a first opening (221), a second opening (233), and a first flow channel connecting the first opening (221) and the second opening (233), wherein the second opening (233) is connected to the first air port (211); The first opening (221) is located above the second opening (233); a first receiving structure (231) is provided in the first flow channel, and the projection of the first opening (221) downward in the vertical direction falls completely within the first receiving structure (231).

2. The air detection component according to claim 1, characterized in that, The first opening (221) and the second opening (233) are offset in the horizontal direction; And / or, the first receiving structure (231) includes a first slope, a portion of the edge of the first slope is connected to the inner wall of the first flow channel and forms a first sealing area; the portion of the edge of the first slope that is not connected to the inner wall of the first flow channel forms a first guiding area with the inner wall of the first flow channel, so that the first opening (221) is connected to the second opening (233) through the first guiding area. Furthermore, in the horizontal direction, along the direction from the first sealing area toward the first flow guiding area, the first slope is inclined upwards.

3. The air detection component according to claim 1 or 2, characterized in that, The detector (21) includes a second air port (212), and the first air port (211) and the second air port (212) are located on the same surface; the first air port (211) is the air inlet of the detector (21), and the second air port (212) is the air outlet of the detector (21); The flow channel structure includes a third opening (222), a fourth opening (234), and a second flow channel connecting the third opening (222) and the fourth opening (234), wherein the fourth opening (234) is connected to the second air port (212); The third opening (222) is located above the fourth opening (234); a second receiving structure (232) is provided in the second flow channel, and the projection of the third opening (222) downward in the vertical direction falls completely within the second receiving structure (232).

4. The air detection component according to claim 3, characterized in that, The third opening (222) and the fourth opening (234) are offset in the horizontal direction; And / or, the second receiving structure (232) includes a second slope, a portion of the edge of the second slope is connected to the inner wall of the second flow channel and forms a second sealing area; the portion of the edge of the second slope that is not connected to the inner wall of the second flow channel forms a second guiding area with the inner wall of the second flow channel, so that the third opening (222) communicates with the fourth opening (234) through the second guiding area; Furthermore, in the horizontal direction, along the direction from the second sealing area toward the second flow guiding area, the second slope is inclined upwards.

5. The air detection component according to claim 4, characterized in that, The flow channel structure includes a mounting bracket (23) and a cover plate (22), the cover plate (22) being connected to the top of the mounting bracket (23); The first opening (221) and the third opening (222) are both provided on the cover plate (22); the first receiving structure (231), the second receiving structure (232), the second opening (233) and the fourth opening (234) are all provided on the mounting bracket (23); the cover plate (22) and the mounting bracket (23) form the first flow channel and the second flow channel.

6. The air detection component according to claim 5, characterized in that, A first sealing gasket (24) is provided between the mounting bracket (23) and the cover plate (22); the mounting bracket (23) is provided with a first boss (235) protruding toward the cover plate (22) and surrounding the first opening (221), and a second boss (236) surrounding the third opening (222); the first sealing gasket (24) is provided with a first limiting hole (241) and a second limiting hole (242) corresponding to the first boss (235) and the second boss (236) respectively. And / or, a second sealing gasket (25) is provided between the bottom of the mounting bracket (23) and the detector (21). And / or, the mounting bracket (23) is provided with two L-shaped positioning bosses (237) arranged diagonally, for positioning the detector (21) at two opposite corners; And / or, the area of ​​the second opening (233) is smaller than the area of ​​the fourth opening (234); And / or, the air detection assembly further includes a filter (26), and the cover plate (22) facing the mounting bracket (23) is provided with a positioning groove (223) for accommodating the filter (26), the first opening (221) penetrates part of the bottom surface of the positioning groove (223), and a positioning post (224) is provided on the bottom surface of the positioning groove (223); the filter (26) is provided with a first through hole connected to the positioning post (224), and a limit cap is provided at the free end of the positioning post (224) to prevent the filter (26) from leaving the positioning post (224), and the filter (26) covers the first opening (221). And / or, a positioning structure is provided between the mounting bracket (23) and the cover plate (22); And / or, a foolproof structure is provided between the mounting bracket (23) and the cover plate (22).

7. The air detection component according to claim 1, characterized in that, The first air inlet (211) is the air inlet of the detector (21); The first receiving structure (231) includes a water collection tank (27), the opening of which faces the first air inlet (211).

8. The air detection component according to claim 7, characterized in that, The detector (21) includes a second air port (212); the second air port (212) is the air outlet of the detector (21); The flow channel structure includes a third opening (222), a fourth opening (234), and a second flow channel connecting the third opening (222) and the fourth opening (234), wherein the fourth opening (234) is connected to the second air port (212).

9. The air detection component according to claim 8, characterized in that, The flow channel structure includes a box body and a cover plate (22), the top surface of the box body has an opening; the cover plate (22) is connected to the opening of the box body, and the first opening (221) is provided on the cover plate (22); The box body is provided with a partition (2831), and the inner cavity formed by the box body and the cover plate (22) is divided into a first flow channel and a second flow channel by the partition (2831); the partition (2831) is provided with a mounting hole that connects the first flow channel and the second flow channel, and one end of the mounting hole that connects to the first flow channel forms a second opening (233), and one end of the mounting hole that connects to the second flow channel forms a fourth opening (234); the detector (21) is located in the mounting hole, and the first air port (211) of the detector (21) is located in the first flow channel, and the second air port (212) is located in the second flow channel; the box body and / or the cover plate (22) is provided with a third opening (222) that connects the second flow channel and the outside. The first air inlet (211) is higher than the bottom surface of the box body, and the side wall of the detector (21) and the inner wall of the box body form the water collection tank (27).

10. A range hood, characterized in that, Includes the air detection component as described in any one of claims 1-9.

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