Range hood

Abstract

The utility model discloses a range hood which comprises a range hood main body and two groups of air curtain components, the range hood body is provided with a top plate and a cover plate, an electric control cavity is formed between the top plate and the cover plate, a cavity is formed in the lower surface of the top plate, the cavity forms a protruding part protruding upwards on the upper surface of the top plate, the cavity is formed in the width direction of the top plate and located in the electric control cavity, and air curtain air outlets are symmetrically formed in the two sides of the top of the cavity. The range hood main body is also provided with an air inlet channel communicated with the electric control cavity; the two groups of air curtain assemblies are arranged in the electric control cavity, the air outlet side of each group of air curtain assembly is aligned with the air curtain air outlet in the corresponding side, and each group of air curtain assembly sucks air entering the electric control cavity from the air inlet channel and exhausts the air through the air curtain air outlet. According to the range hood disclosed by the utility model, when oil fume flows to the edge of the cavity, the flowing path of the oil fume can be cut off by the edge blocked by the cavity, and the oil fume cannot continuously flow to the bottom of the cavity, so that the oil fume can be prevented from flowing into the air outlet of the air curtain, and oil dirt is prevented from being generated on the edge of the innermost side of the air outlet of the air curtain.

Description

Technical Field

[0001] This utility model relates to the field of smoke hood technology, specifically to a smoke hood. Background Technology

[0002] An air curtain assembly is installed above the top panel of the range hood. This assembly directs airflow downwards through air curtain vents on the top panel, creating an air curtain below the panel to reduce the escape of cooking fumes. When the range hood is running, some cooking fumes rush towards the top panel and flow forward due to the wall adhesion effect. In existing technology, the air curtain vents are directly located on the flat surface of the top panel. The cooking fumes flow until they reach the outlet of the air curtain before being blocked by the air curtain. This results in grease buildup at the innermost edge of the air curtain vent, which, over time, affects the appearance of the range hood and makes it difficult to clean. Utility Model Content

[0003] The purpose of this utility model is to provide a range hood that solves the above-mentioned technical problems.

[0004] The present invention proposes a range hood comprising a main body and two sets of air curtain assemblies. The main body has a top plate and a cover plate, with an electrical control cavity formed between the top plate and the cover plate. A cavity is provided on the lower surface of the top plate, and the cavity forms an upwardly protruding part on the upper surface of the top plate. The cavity is arranged along the width direction of the top plate and located within the electrical control cavity. Air curtain outlets are symmetrically provided on both sides of the top of the cavity. The main body of the range hood also has an air intake channel communicating with the electrical control cavity. The two sets of air curtain assemblies are located within the electrical control cavity, with the air outlet side of each set of air curtain assemblies aligned with the corresponding air curtain outlet side. Each set of air curtain assemblies draws air into the electrical control cavity from the air intake channel and exhausts it through the air curtain outlet.

[0005] According to one embodiment of the present invention, the air curtain assembly is installed on the top plate by an air curtain bracket. The air curtain bracket is provided with a clearance opening, which extends through one end of the air curtain bracket along its length. The clearance opening of the left side of the air curtain bracket extends through the right end of the air curtain bracket, and the clearance opening of the right side of the air curtain bracket extends through the left end of the air curtain bracket. The clearance opening avoids the raised portion.

[0006] According to one embodiment of the present invention, the air curtain assembly includes a cyclone seat and an air curtain fan. The cyclone seat is disposed on the air curtain support and has an air outlet channel communicating with the air outlet of the air curtain. The air curtain fan is disposed on the cyclone seat and the air outlet end of the air curtain fan faces the air outlet channel.

[0007] According to one embodiment of the present invention, walls are provided on both sides of the clearance opening of the air curtain support, and a snap-fit ​​plate extending to the opposite side is provided on the vertical wall near the end of the air curtain support that is not penetrated by the clearance opening. The bottom of the cyclone seat is provided with a first buckle that is adapted to the snap-fit ​​plate, and the first buckle snaps into the snap-fit ​​plate.

[0008] According to one embodiment of the present invention, the snap-fit ​​plate forms an angle α with the horizontal plane, 0° < α < 10°, the width of the snap-fit ​​plate at one end facing the first snap-fit ​​is a, and the width of the other end is b, 0 < a < b.

[0009] According to one embodiment of the present invention, two sets of first buckles are mirror-imagely provided at the left and right ends of the bottom of the cyclone seat, so that the air curtain bracket and the cyclone seat of the two sets of air curtain components are common parts.

[0010] According to one embodiment of the present invention, the end of the air curtain support through which the clearance opening is penetrated is provided with a support part, the support part arches upward and avoids the raised part, and the two ends of the cyclone seat are provided with connecting parts, wherein the connecting part on one side is connected to the support part on the corresponding side.

[0011] According to one embodiment of the present invention, the cyclone seat is provided with a first connecting hole on the front side and a second buckle on the rear side. The air curtain fan is a cross-flow fan. The volute base plate of the cross-flow fan is provided with a second connecting hole on the rear side. The volute base plate of the cross-flow fan is placed on the cyclone seat, and its front side is engaged with the second buckle. The second connecting hole on its rear side is aligned with the first connecting hole and connected by screws.

[0012] According to one embodiment of the present invention, the main body of the smoke hood includes a shell, an air collecting box assembly, and a surrounding plate. The shell has a top plate and a cover plate. The cover plate has an installation opening. The air collecting box assembly is installed inside the shell and extends out of the shell from the installation opening. The cover plate has a support groove around the installation opening. The surrounding plate is installed in the support groove and is arranged around the air collecting box assembly. There is a first gap between the air collecting box assembly and the installation opening. The first gap communicates with the electrical control cavity. There is a second gap between the surrounding plate and the outer wall of the air collecting box assembly. The second gap communicates with the external air and the first gap. The first gap and the second gap form an air intake channel. Alternatively, air curtain inlets are symmetrically provided on both sides of the cover plate. The air intake side of each air curtain assembly is aligned with the corresponding air curtain inlet. The air curtain inlets form an air intake channel.

[0013] According to one embodiment of the present invention, an air quality detection component is further provided inside the electrical control cavity. The air quality detection component is mounted on the top plate via a detection bracket, which spans the raised portion. The cover plate is provided with a detection hole corresponding to the air quality detection component.

[0014] Compared with the prior art, the smoke hood of this utility model has the following advantages:

[0015] The present invention relates to a range hood with a cavity on the lower surface of the top plate, and the air curtain outlet is located inside the cavity. When the range hood is running, some of the oil fumes rush towards the top plate and flow forward under the effect of the wall adhesion. When the oil fumes reach the edge of the cavity, the flow path is blocked by the edge of the cavity, and they cannot continue to flow to the bottom of the cavity. This prevents the oil fumes from flowing into the air curtain outlet and avoids the formation of oil stains on the innermost edge of the air curtain outlet. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the smoke hood of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the smoke hood of this utility model from another direction;

[0018] Figure 3 This is a schematic diagram of the structure of the smoke hood of this utility model after the surrounding panel has been removed;

[0019] Figure 4 This is a structural cross-sectional view of the smoke hood of this utility model;

[0020] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0021] Figure 6 This is a structural cross-sectional view of another embodiment of the smoke hood of this utility model;

[0022] Figure 7 This is a schematic diagram of another embodiment of the smoke hood of this utility model;

[0023] Figure 8 This is a schematic diagram of the installation structure of the air curtain component and the air quality detection component in this utility model;

[0024] Figure 9 This is a schematic diagram of the installation structure of the air curtain assembly and the air quality detection assembly in another direction of this utility model;

[0025] Figure 10 This is an exploded view of the structure of the air curtain component in this utility model;

[0026] Figure 11 for Figure 10 A magnified view of a section at point B in the middle;

[0027] Figure 12 This is a schematic diagram showing the connection between the wind curtain support and the top plate in this utility model.

[0028] In the diagram: a. First gap, b. Second gap, 1. Main body of the smoke machine, 01. Shell, 02. Air collection box assembly, 03. Enclosure, 11. Top plate, 111. Cavity, 112. Raised part, 113. Air curtain outlet, 12. Cover plate, 121. Support groove, 122. Air curtain inlet, 123. Detection hole, 13. Electrical control cavity, 2. Air curtain assembly, 21. Air curtain bracket, 211. Circumvention opening, 212. Vertical wall, 213. Snap-fit ​​plate, 214. Support part, 22. Cyclone seat, 221. Air outlet channel, 222. First buckle, 223. Connecting part, 224. First connecting hole, 225. Second buckle, 23. Air curtain fan, 231. Second connecting hole, 3. Air quality detection assembly, 31. Detection bracket.

[0029] The implementation and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] To further understand the content, features, and effects of this utility model, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings:

[0034] This utility model discloses a smoke hood. Please refer to [link / reference]. Figure 1 , Figure 6 and Figure 8 The present invention relates to a range hood comprising a main body 1 and two sets of air curtain assemblies 2. The main body 1 has a top plate 11 and a cover plate 12, and an electrical control cavity 13 is formed between the top plate 11 and the cover plate 12. A cavity 111 is provided on the lower surface of the top plate 11, and an upwardly protruding bulge 112 is formed on the upper surface of the top plate 11. The cavity 111 is arranged along the width direction of the top plate 11 and is located within the electrical control cavity 13. Air curtain outlets 113 are symmetrically provided on both sides of the top of the cavity 111. The main body 1 also has an air intake channel communicating with the electrical control cavity 13. The two sets of air curtain assemblies 2 are located within the electrical control cavity 13. The air outlet side of each set of air curtain assemblies 2 is aligned with the corresponding air curtain outlet 113. Each set of air curtain assemblies 2 draws air into the electrical control cavity 13 through the air intake channel and exhausts it through the air curtain outlet 113. A cavity 111 is provided on the lower surface of the top plate 11, and the air curtain outlet 113 is opened in the cavity 111. When the range hood is running, some of the oil fumes rush towards the top plate 11 and flow forward under the effect of the wall adhesion. When the oil fumes flow to the edge of the cavity 111, the flow path is blocked by the edge of the cavity 111, and they cannot continue to flow to the bottom of the cavity 111. This prevents the oil fumes from flowing into the air curtain outlet 113 and avoids the generation of oil stains on the innermost edge of the air curtain outlet 113.

[0035] In this embodiment, a raised portion 112 is formed on the upper surface of the top plate 11, and a cavity 111 is recessed on the lower surface of the top plate 11 corresponding to the raised portion 112. An air curtain outlet 113 is located within the cavity 111, penetrating both the upper and lower surfaces of the top plate 11. An air curtain assembly 2 is installed on the upper surface of the top plate 11 and positioned at the air curtain outlet 113. Two sets of air curtain assemblies 2 are installed on the top plate 11, each corresponding to one of the two air curtain outlets 113. The raised portion 112 extends along the length of the top plate 11, and the lower surface of the top plate 11 forms a long, narrow cavity 111 corresponding to the raised portion 112. Two air curtain outlets 113 are provided, both located within the cavity 111 and spaced apart along the length of the cavity 111.

[0036] When the range hood is running, the air curtain assembly 2 is activated. Outside air enters the electronic control cavity 13 along the air intake channel. The air curtain assembly 2 draws the air into the electronic control cavity 13 through the air intake channel and exhausts it through the air curtain outlet 113, forming an air curtain below the air curtain outlet 113. The cooking fumes will flow towards the air intake under the negative pressure formed at the air intake. Some of the fumes will rush towards the top plate 11 and flow forward under the effect of the wall adhesion. When the fumes flow to the cavity 111, the flow path will be blocked by the cavity 111, thereby interrupting the trend of the fumes continuing to flow forward and preventing them from flowing to the bottom of the cavity 111. This prevents the fumes from flowing into the air curtain outlet 113 and avoids the formation of grease on the innermost edge of the air curtain outlet 113.

[0037] The smoke hood of this utility model, such as Figures 8 to 12 As shown, the air curtain assembly 2 is installed on the top plate 11 via the air curtain bracket 21. The air curtain bracket 21 is provided with a clearance opening 211. The clearance opening 211 extends through one end of the air curtain bracket 21 along its length. The clearance opening 211 of the left side of the air curtain bracket 21 extends through the right end of the air curtain bracket 21, and the clearance opening 211 of the right side of the air curtain bracket 21 extends through the left end of the air curtain bracket 21. The clearance opening 211 avoids the raised part 112.

[0038] The air curtain bracket 21 is used to support the cyclone base 22 and the air curtain fan 23 above the air curtain outlet 113. The air curtain bracket 21 is connected to the plate surface of the top plate 11 around the raised portion 112, which is located within the clearance opening 211. In this way, the air curtain bracket 21 can avoid the raised portion 112 through the clearance opening 211 and connect to the top plate 11, so as to achieve stable installation of the air curtain bracket 21 on the top plate 11.

[0039] Taking two sets of air curtain components 2 arranged left and right on the top plate 11 as an example, the two sets of air curtain components 2 can be defined as the first air curtain component and the second air curtain component, respectively. The air curtain support 21 of the first air curtain component is defined as the first air curtain support, and the air curtain support 21 of the second air curtain component is defined as the second air curtain support. Both the first and second air curtain supports have clearance openings 211. The clearance opening 211 of the first air curtain support extends through the right end of the first air curtain support, and the clearance opening 211 of the second air curtain support extends through the left end of the second air curtain support. The left end of the clearance opening 211 of the first air curtain support corresponds to the left end of the raised portion 112, and the right end of the clearance opening 211 of the second air curtain support corresponds to the right end of the raised portion 112. The right end of the first air curtain support and the left end of the second air curtain support both avoid the middle portion of the raised portion 112.

[0040] By having the two air curtain outlets 113 located on the same raised portion 112, only one raised portion 112 needs to be machined when processing the top plate 11, thus simplifying the processing of the top plate 11. The clearance opening 211 passes through one end of the air curtain bracket 21, allowing the clearance opening 211 to avoid raised portions 112 whose length is greater than the length of the air curtain bracket 21, ensuring that both air curtain brackets 21 can be easily installed on the top plate 11.

[0041] The smoke hood of this utility model, such as Figures 8 to 10 As shown, the air curtain assembly 2 includes a cyclone seat 22 and an air curtain fan 23. The cyclone seat 22 is mounted on the air curtain support 21. The cyclone seat 22 is provided with an air outlet channel 221 that communicates with the air curtain outlet 113. The air curtain fan 23 is mounted on the cyclone seat 22, and the air outlet end of the air curtain fan 23 faces the air outlet channel 221.

[0042] After the air curtain bracket 21 is connected to the top plate 11, the cyclone seat 22 is installed on the air curtain bracket 21, and then the air curtain fan 23 is installed on the cyclone seat 22, thus achieving stable installation of the entire air curtain assembly 2 on the top plate 11. The clearance opening 211 can also connect the air outlet channel 221 of the cyclone seat 22 with the air curtain outlet 113, so that the airflow blown by the air curtain fan 23 towards the air outlet channel 221 can flow through the clearance opening 211 to the air curtain outlet 113, and then flow down the top plate 11 to form an air curtain. By setting the clearance opening 211 on the air curtain bracket 21, the protrusion 112 on the top plate 11 can be avoided from affecting the installation of the air curtain bracket 21, thereby improving the overall installation convenience of the air curtain assembly 2.

[0043] The smoke hood of this utility model, such as Figure 10 As shown, walls 212 are provided on both sides of the clearance opening 211 of the air curtain support 21. A snap-fit ​​plate 213 extending to the opposite side is provided on the wall 212 near the end of the air curtain support 21 that is not penetrated by the clearance opening 211. A first buckle 222 adapted to the snap-fit ​​plate 213 is provided at the bottom of the cyclone seat 22. The first buckle 222 snaps into the snap-fit ​​plate 213.

[0044] The bottom side of the vertical wall 212 is connected to the two long side edges of the clearance opening 211, and the snap-fit ​​plate 213 is connected to the top side of the vertical wall 212. The snap-fit ​​plate 213 is close to the end of the air curtain bracket 21 that is not penetrated by the clearance opening 211. The two snap-fit ​​plates 213 are arranged side by side. The number and position of the first buckles 222 correspond to the snap-fit ​​plates 213. The two first buckles 222 are snapped into the two snap-fit ​​plates 213 respectively, so that the cyclone seat 22 and the air curtain bracket 21 can be snapped and fixed.

[0045] The smoke hood of this utility model, such as Figure 11As shown, the snap-fit ​​plate 213 forms an angle α with the horizontal plane, 0° < α < 10°. The distance between the two snap-fit ​​plates 213 and the upper surface of the top plate 11 decreases from the side of the two snap-fit ​​plates 213 that are close to each other to the side that are far away from each other, so that the side of the two snap-fit ​​plates 213 that are close to each other can be slightly tilted upwards, thereby guiding the first buckle 222 and making the first buckle 222 snap-fit ​​and fixed with the snap-fit ​​plate 213 more quickly and conveniently.

[0046] The width of the snap-fit ​​plate 213 at one end facing the first snap-fit ​​222 is a, and the width at the other end is b, where 0 < a < b. The first snap-fit ​​222 snaps onto the snap-fit ​​plate 213 from one end along its length. The width of the snap-fit ​​plate 213 increases from the end facing the first snap-fit ​​222 toward the end away from the first snap-fit ​​222. In this way, the distance between the two snap-fit ​​plates 213 decreases from the end facing the first snap-fit ​​222 toward the end away from the first snap-fit ​​222. This guides the part of the cyclone seat 22 that snaps into the two snap-fit ​​plates 213, improving the ease of fitting between the cyclone seat 22 and the two snap-fit ​​plates 213.

[0047] The smoke hood of this utility model, such as Figure 10 As shown, the bottom left and right ends of the cyclone seat 22 are mirrored with two sets of first buckles 222, making the air curtain bracket 21 and the cyclone seat 22 of the two sets of air curtain components 2 universal components.

[0048] Based on the above embodiments of the first and second air curtain components, the cyclone seat 22 of the first air curtain component is defined as the first cyclone seat, and the cyclone seat 22 of the second air curtain component is defined as the second cyclone seat. The first air curtain support and the second air curtain support have the same structure, and the first cyclone seat and the second cyclone seat also have the same structure.

[0049] When installing the left air curtain assembly 2, any air curtain bracket 21 can be selected as the first air curtain bracket and installed at the left air curtain outlet 113. The left end of the clearance opening 211 of the first air curtain bracket corresponds to the left end of the clearance protrusion 112, and the clearance opening 211 of the first air curtain bracket penetrates the right end of the first air curtain bracket.

[0050] When installing the right-side air curtain assembly 2, any air curtain bracket 21 can be selected as the second air curtain bracket and installed at the right-side air curtain outlet 113. At this time, the two ends of the second air curtain bracket need to be reversed relative to the first air curtain bracket, that is, the right end of the clearance opening 211 of the second air curtain bracket corresponds to the right end of the clearance protrusion 112, and the clearance opening 211 of the second air curtain bracket penetrates the left end of the second air curtain bracket.

[0051] After the first air curtain bracket on the left is installed, the snap-fit ​​plate 213 on the first air curtain bracket is located near the left end of the first air curtain bracket. After the second air curtain bracket on the right is installed, the snap-fit ​​plate 213 on the second air curtain bracket is located near the right end of the second air curtain bracket.

[0052] When installing the left cyclone seat 22, any cyclone seat 22 can be selected as the first cyclone seat. Since the bottom left and right ends of the cyclone seat 22 are mirrored with two sets of first buckles 222, the left and right ends of the cyclone seat 22 can arbitrarily correspond to the left and right ends of the air curtain bracket 21. When the first cyclone seat is installed on the first air curtain bracket, it is fixed by the first buckle 222 on the left end to the snap-fit ​​plate 213 on the first air curtain bracket.

[0053] When installing the right-side cyclone seat 22, any cyclone seat 22 can be selected as the second cyclone seat. Since the bottom left and right ends of the cyclone seat 22 are mirrored with two sets of first buckles 222, the left and right ends of the second cyclone seat do not need to be reversed relative to the left and right ends of the first cyclone seat. When the second cyclone seat is installed on the second air curtain bracket, it is fixed by the first buckle 222 on the right end to the snap-fit ​​plate 213 on the second air curtain bracket.

[0054] By setting the air curtain bracket 21 and the cyclone seat 22 as universal parts, operators do not need to distinguish between the parts when installing the left and right air curtain components 2. They only need to make simple distinctions between the left and right ends of the air curtain bracket 21 when installing the air curtain bracket 21, which simplifies the installation process of the air curtain component 2 and improves the ease of installation.

[0055] The smoke hood of this utility model, such as Figure 10 As shown, the air curtain support 21 has a support portion 214 at one end through which the clearance opening 211 passes. The support portion 214 arches upward to avoid the raised portion 112. The cyclone seat 22 has connecting portions 223 at both ends, with one connecting portion 223 connecting to the corresponding support portion 214. The support portion 214 is located above the raised portion 112, and the connecting portion 223 overlaps the upper surface of the support portion 214. The support portion 214 can have a connecting hole, and the connecting portion 223 has a corresponding through hole. The through hole and the connecting hole are connected by fasteners to achieve a fixed connection between the connecting portion 223 and the support portion 214.

[0056] The smoke hood of this utility model, such as Figure 10As shown, the cyclone seat 22 has a first connecting hole 224 on its front side and a second clip 225 on its rear side. The air curtain fan 23 is a cross-flow fan. The volute base plate of the cross-flow fan has a second connecting hole 231 on its rear side. The volute base plate of the cross-flow fan is placed on the cyclone seat 22, with its front side engaging with the second clip 225. The second connecting hole 231 on its rear side aligns with the first connecting hole 224 and is connected by screws. It should be noted that when installing the cyclone seat 22, the installation orientation of the left and right cyclone seats 22 is the same, that is, the first connecting hole 224 must be in front and the second clip 225 must be behind. Therefore, when installing the cyclone seat 22, the operator needs to make a simple distinction between the front and rear sides of the cyclone seat 22.

[0057] After the cyclone base 22 is installed, when installing the cross-flow fan, the rear side of the volute base plate of the cross-flow fan can be inserted into the second clip 225 to achieve pre-fixation between the cross-flow fan and the cyclone base 22. After the rear side of the volute base plate of the cross-flow fan is engaged with the second clip 225, the second connecting hole 231 on its front side is aligned with the first connecting hole 224 on the cyclone base 22. At this time, the first connecting hole 224 and the second connecting hole 231 can be connected by screws to achieve a fixed connection between the cross-flow fan and the cyclone base 22.

[0058] It should be noted that when installing cross-flow fans, the motor of the left cross-flow fan needs to be located at the right end, and the motor of the right cross-flow fan needs to be located at the left end. Therefore, the operator needs to make a simple distinction between the two cross-flow fans when installing them.

[0059] The smoke hood of this utility model, such as Figures 2 to 5 As shown, the main body 1 of the smoke hood includes a housing 01, an air collecting box assembly 02, and a surrounding plate 03. The housing 01 has a top plate 11 and a cover plate 12. The cover plate 12 is provided with an installation port. The air collecting box assembly 02 is installed inside the housing 01 and extends out of the housing 01 from the installation port. The cover plate 12 is provided with a support groove 121 around the installation port. The surrounding plate 03 is installed in the support groove 121 and is arranged around the air collecting box assembly 02. There is a first gap a between the air collecting box assembly 02 and the installation port. The first gap a communicates with the electrical control cavity 13. There is a second gap b between the surrounding plate 03 and the outer wall of the air collecting box assembly 02. The second gap b communicates with the external air and the first gap a. The first gap a and the second gap b form an air intake channel.

[0060] The electrical control cavity 13 is located in front of the mounting opening, that is, in front of the air collecting box assembly 02 and the first gap a. The first gap a is formed between the front edge of the air collecting box assembly 02 and the mounting opening. When the air curtain assembly 2 is working, external air enters the electrical control cavity 13 through the first gap a, and is then discharged by the air curtain assembly 2 through the air curtain outlet 113. In this way, it is not necessary to open an additional air inlet on the top plate 11 to communicate with the electrical control cavity 13, thereby simplifying the structure of the cover plate 12 and preventing external dust and other debris from easily falling into the electrical control cavity 13. The enclosure plate 03 can hide and protect the air collecting box assembly 02 and the second gap b, preventing the first gap a from being directly exposed to the user's view, thereby serving a decorative purpose for the range hood. The second gap b extends along the height direction of the air collecting box assembly 02. The top part of the second gap b is connected to the outside air, and the bottom part of the second gap b is connected to the first gap a. When the air curtain assembly 2 is working, the outside air enters the second gap b from the top of the air collecting box assembly 02 and the enclosure 03, then enters the first gap a through the second gap b, and then enters the electrical control cavity 13 through the first gap a, and is then discharged by the air curtain assembly 2 through the air curtain outlet 113.

[0061] In another embodiment, such as Figure 7 As shown, air curtain inlets 122 are symmetrically provided on both sides of the cover plate 12. The air inlet side of each air curtain assembly 2 is aligned with the corresponding air curtain inlet 122, and the air curtain inlets 122 form an air intake channel. When the air curtain assembly 2 is working, the air above the cover plate 12 enters the electrical control cavity 13 through the air curtain inlet 122, flows through the air curtain assembly 2, and is then discharged through the air curtain outlet 113, forming an air curtain below the top plate 11.

[0062] The smoke hood of this utility model, such as Figure 8 and Figure 9 As shown, the electrical control cavity 13 is also equipped with an air quality detection component 3. The air quality detection component 3 is mounted on the top plate 11 via a detection bracket 31. The detection bracket 31 spans the raised portion 112. The cover plate 12 is provided with a detection hole 123 corresponding to the air quality detection component 3.

[0063] The air quality detection module includes at least one of a PM2.5 detection module, a methane sensor, and a carbon monoxide sensor. A detection port 123 connects the inner cavity of the air quality detection component 3 to the external air environment. When the air quality detection module is operating, air above the cover plate 12 enters the inner cavity of the air quality detection component 3 through the detection port 123 and is detected by the air quality detection module. A detection bracket 31 supports the air quality detection component 3 above the raised portion 112 to prevent the raised portion 112 from obstructing the installation of the air quality detection module, thereby ensuring stable installation of the air quality detection module within the electrical control cavity 13.

[0064] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A range hood, characterized in that, include: The main body (1) of the range hood has a top plate (11) and a cover plate (12). An electrical control cavity (13) is formed between the top plate (11) and the cover plate (12). A cavity (111) is provided on the lower surface of the top plate (11). The cavity (111) forms an upwardly protruding bulge (112) on the upper surface of the top plate (11). The cavity (111) is arranged along the width direction of the top plate (11) and located in the electrical control cavity (13). Air curtain outlets (113) are symmetrically provided on both sides of the top of the cavity (111). The main body (1) of the range hood also has an air inlet channel communicating with the electrical control cavity (13). Two sets of air curtain components (2) are provided in the electrical control cavity (13). The air outlet side of each set of air curtain components (2) is aligned with the air outlet (113) on the corresponding side. Each set of air curtain components (2) draws air into the electrical control cavity (13) through the air inlet channel and exhausts it through the air outlet (113).

2. The range hood according to claim 1, characterized in that, The air curtain assembly (2) is installed on the top plate (11) via an air curtain bracket (21). The air curtain bracket (21) is provided with a clearance opening (211). The clearance opening (211) extends through one end of the air curtain bracket (21) along its length. The clearance opening (211) on the left side of the air curtain bracket (21) extends through the right end of the air curtain bracket (21), and the clearance opening (211) on the right side of the air curtain bracket (21) extends through the left end of the air curtain bracket (21). The clearance opening (211) avoids the raised portion (112).

3. The range hood according to claim 2, characterized in that, The air curtain assembly (2) includes a cyclone seat (22) and an air curtain fan (23). The cyclone seat (22) is mounted on the air curtain support (21). The cyclone seat (22) is provided with an air outlet channel (221) that communicates with the air outlet (113) of the air curtain. The air curtain fan (23) is mounted on the cyclone seat (22), and the air outlet end of the air curtain fan (23) faces the air outlet channel (221).

4. The range hood according to claim 3, characterized in that, Walls (212) are provided on both sides of the clearance opening (211) of the air curtain bracket (21). A snap-fit ​​plate (213) extending to the opposite side is provided on the wall (212) near the end of the air curtain bracket (21) that is not penetrated by the clearance opening (211). The bottom of the cyclone seat (22) is provided with a first buckle (222) that is adapted to the snap-fit ​​plate (213). The first buckle (222) snaps into the snap-fit ​​plate (213).

5. The range hood according to claim 4, characterized in that, The snap-fit ​​plate (213) forms an angle α with the horizontal plane, 0° < α < 10°. The width of one end of the snap-fit ​​plate (213) facing the first buckle (222) it snaps with is a, and the width of the other end is b, 0 < a < b.

6. The range hood according to claim 4, characterized in that, The bottom left and right ends of the cyclone seat (22) are provided with two sets of the first buckles (222), so that the air curtain bracket (21) and the cyclone seat (22) of the two sets of air curtain components (2) are common parts.

7. The range hood according to claim 6, characterized in that, The air curtain support (21) is provided with a support part (214) at one end through which the avoidance opening (211) passes. The support part (214) arches upward and avoids the raised part (112). The two ends of the cyclone seat (22) are provided with connecting parts (223), one of which is connected to the support part (214) on the corresponding side.

8. The smoke hood according to claim 3, characterized in that, The cyclone seat (22) has a first connecting hole (224) on the front side and a second buckle (225) on the rear side. The air curtain fan (23) is a cross-flow fan. The volute bottom plate of the cross-flow fan has a second connecting hole (231) on the rear side. The volute bottom plate of the cross-flow fan is placed on the cyclone seat (22), and its front side is engaged with the second buckle (225). The second connecting hole (231) on its rear side is aligned with the first connecting hole (224) and connected by screws.

9. The range hood according to claim 1, characterized in that, The main body (1) of the range hood includes a housing (01), an air collecting box assembly (02), and a surrounding plate (03). The housing (01) has a top plate (11) and a cover plate (12). The cover plate (12) is provided with an installation port. The air collecting box assembly (02) is installed inside the housing (01) and extends out of the housing (01) from the installation port. The cover plate (12) is provided with a support groove (121) around the installation port. The surrounding plate (03) is installed in the support groove (121) and is arranged around the air collecting box assembly (02). The air collecting box assembly (02) and the installation... There is a first gap (a) between the openings, and the first gap (a) is connected to the electrical control cavity (13). There is a second gap (b) between the enclosure (03) and the outer wall of the air collection box assembly (02). The second gap (b) is connected to the external air and the first gap (a). The first gap (a) and the second gap (b) form the air intake channel. Alternatively, the cover plate (12) is symmetrically provided with air curtain inlets (122) on both sides. The air intake side of each group of air curtain assemblies (2) is aligned with the corresponding side of the air curtain inlet (122). The air curtain inlet (122) forms the air intake channel.

10. The smoke hood according to claim 1, characterized in that, An air quality detection component (3) is also provided inside the electrical control cavity (13). The air quality detection component (3) is mounted on the top plate (11) via a detection bracket (31). The detection bracket (31) spans the raised portion (112). The cover plate (12) is provided with a detection hole (123) corresponding to the air quality detection component (3).

Images