Cooking fume hood and extractor hood

Abstract

The application discloses a smoke collecting hood and a range hood. The smoke collecting hood comprises a shell and a secondary fan module. The shell comprises a main smoke inlet, a smoke inlet cavity, a mounting cavity and a smoke guide plate. The main smoke inlet and the smoke inlet cavity are communicated. The mounting cavities are arranged on the left side and the right side of the smoke inlet cavity respectively. The smoke guide plate is arranged between the smoke inlet cavity and the mounting cavities. The main smoke inlet is arranged between the smoke guide plates on the left side and the right side. The smoke guide plate is provided with a first through hole. The secondary fan module comprises a secondary fan. The secondary fan is arranged in the mounting cavity. The inlet of the secondary fan is communicated with the first through hole. According to the technical scheme, the secondary fan module is arranged, the flow rate near the left side and the right side of the smoke collecting hood is strengthened, the smoke control capacity of the smoke collecting hood is improved, and the occurrence of the smoke running and the smoke leakage is inhibited.

Description

Technical Field

[0001] This application relates to the field of kitchen appliances, and in particular to a smoke hood and a range hood. Background Technology

[0002] A range hood includes a frame and a smoke collection hood. The frame has a receiving cavity, which houses a fan module. The smoke collection hood has a smoke inlet. When the fan module is working, the smoke first enters the interior of the smoke collection hood through the smoke inlet, then enters the receiving cavity, and is finally exhausted by the fan module. Related technologies sometimes include a secondary fan module on the smoke collection hood to enhance the smoke extraction effect. However, improper placement of the secondary fan module can lead to smoke leakage and escape from the left and right sides of the smoke collection hood. Utility Model Content

[0003] This application aims to at least partially solve one of the technical problems in the related art. To this end, this application proposes a smoke hood.

[0004] To achieve the above objectives, this application discloses a smoke collection hood, the smoke collection hood comprising: A housing, comprising a main smoke inlet, a smoke inlet chamber, an mounting chamber, and a smoke guide plate. The main smoke inlet and the smoke inlet chamber are connected. The mounting chambers are respectively located on the left and right sides of the smoke inlet chamber, and the smoke guide plate is located between the smoke inlet chamber and the mounting chamber. The main smoke inlet is located between the smoke guide plates on the left and right sides, and the smoke guide plate has a first through hole. A secondary fan module, comprising a secondary fan disposed in the mounting cavity, wherein the inlet of the secondary fan is connected to the first through hole.

[0005] In some embodiments of this application, the housing further includes a rectifier plate, which is disposed in the smoke inlet cavity and covers the first through hole, so as to form an open rectifier cavity between the rectifier plate and the smoke guide plate.

[0006] In some embodiments of this application, the housing includes a cover plate located on the front side, the cover plate having the main smoke inlet, and the open end of the rectifier cavity being exposed at the main smoke inlet.

[0007] In some embodiments of this application, the rectifier cavity is open to the front and / or downward; And / or, the opening direction of the open end of the rectifier cavity is set in the same direction as the opening direction of the main smoke inlet.

[0008] In some embodiments of this application, the outlet and the smoke inlet chamber of the auxiliary fan are connected.

[0009] In some embodiments of this application, the smoke guide plate is further provided with a second through hole, and the auxiliary fan module further includes a smoke guide duct. The smoke guide duct passes through the second through hole, and the inlet of the smoke guide duct is connected to the outlet of the auxiliary fan, and the outlet of the smoke guide duct is connected to the smoke inlet chamber.

[0010] In some embodiments of this application, the smoke guide plate includes a first side plate and a second side plate. The first side plate is provided with a first through hole and a second through hole. The second side plate is inclined from the first side plate, and the second side plates of the smoke guide plate on the left and right sides are inclined toward each other.

[0011] In some embodiments of this application, the portion of the smoke guide duct located in the smoke inlet chamber extends along the inclined direction of the second side plate; And / or, the outlet of the smoke duct opens along the inclined direction of the second side plate.

[0012] In some embodiments of this application, the minimum distance between the portion of the smoke guide duct located in the smoke inlet chamber and the second side plate is no greater than 10 mm.

[0013] In some embodiments of this application, the portion of the smoke guide duct located in the smoke inlet chamber is in close contact with the second side plate.

[0014] In some embodiments of this application, the second side plate has a first end intersecting the first side plate and a second end away from the first end, and the outlet of the smoke duct is located between the first end and the second end along the inclined direction of the second side plate.

[0015] The second aspect of this application discloses a range hood, which includes the aforementioned smoke collection hood.

[0016] In some embodiments of this application, the range hood further includes a frame and a main fan module. The frame has a receiving cavity, the main fan module is located in the receiving cavity, the smoke collection hood is connected to the frame, the smoke inlet cavity is connected to the receiving cavity, and the outlet of the auxiliary fan is connected to the receiving cavity.

[0017] The technical solution of this application enhances the smoke control capability of the smoke hood by setting up a secondary fan module, thereby increasing the airflow velocity near the left and right sides of the smoke hood and suppressing the occurrence of smoke escape and leakage.

[0018] Other advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description or may be learned by practice of this application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other designs can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 These are schematic diagrams of range hoods in some embodiments; Figure 2 for Figure 1 Schematic diagram of a local structure in the middle; Figure 3 This is a cross-sectional view of the range hood in some embodiments; Figure 4 for Figure 3 Schematic diagram of a local structure in the middle; Figure 5 This is another cross-sectional view of the range hood in some embodiments; Figure 6 This is a third sectional view of a range hood in some embodiments.

[0021] Explanation of icon numbers: Smoke hood 10, housing 100, main smoke inlet 110, smoke inlet chamber 120, mounting chamber 130, smoke guide plate 140, first side plate 141, first through hole 1411, second through hole 1412, second side plate 142, first end 1421, second end 1422, cover plate 150, rectifier plate 160, rectifier chamber 161, panel 170, auxiliary fan module 200, auxiliary fan 210, smoke guide duct 223, frame 300, accommodating chamber 310, main fan module 400.

[0022] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application 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.

[0025] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0027] The first aspect of this application discloses a smoke hood 10, which, in some embodiments, is combined with Figures 1 to 6 As shown, the smoke hood 10 includes a housing 100 and a secondary fan module 200. The housing 100 includes a main smoke inlet 110, a smoke inlet chamber 120, an installation chamber 130, and a smoke guide plate 140. The main smoke inlet 110 and the smoke inlet chamber 120 are connected. The left and right sides of the smoke inlet chamber 120 are respectively provided with the installation chamber 130, and the smoke guide plate 140 is provided between the smoke inlet chamber 120 and the installation chamber 130. The main smoke inlet 110 is provided between the smoke guide plates 140 on the left and right sides. The smoke guide plate 140 is provided with a first through hole 1411. The secondary fan module 200 includes a secondary fan 210. The secondary fan 210 is located in the installation chamber 130, and the inlet of the secondary fan 210 is connected to the first through hole 1411.

[0028] By setting up the auxiliary fan module 200, the flow velocity near the left and right sides of the smoke hood 10 is enhanced, thereby improving the smoke control and smoke containment capabilities of the smoke hood 10 and suppressing the occurrence of smoke leakage.

[0029] The following explanation uses a range hood as an example. The orientation in this article is based on the example of a range hood installed on a wall. When the user stands in front of the range hood, the side of the range hood closest to the ground is the bottom, the side away from the ground is the top, the side facing the user is the front, the side away from the user is the back, the side corresponding to the user's left hand is the left, and the side corresponding to the user's right hand is the right.

[0030] The range hood includes a frame 300, a main fan module 400, and a smoke collection hood 10. The frame 300 is a skeleton structure for installing the main fan module 400. The frame 300 has a cubic structure and an internal cavity 310. The main fan module 400 is installed in the cavity 310. The inlet of the main fan module 400 is connected to the cavity 310. The outlet of the main fan module 400 is exposed on the frame 300 and connected to the external flue through a pipe. The smoke hood 10 is a structure for collecting smoke. The smoke hood 10 is connected to the frame 300 and is located below the frame 300. The smoke hood 10 includes a main smoke inlet 110 and a smoke inlet chamber 120. The main smoke inlet 110 and the smoke inlet chamber 120 are connected. The smoke inlet chamber 120 is connected to the receiving cavity 310. When the main fan module 400 is working, the flue gas enters the smoke inlet chamber 120 through the main smoke inlet 110, then enters the receiving cavity 310, then enters the interior of the main fan module 400, and finally is discharged to the external flue.

[0031] As the flue gas enters the smoke inlet chamber 120 through the main smoke inlet 110, the flow velocity and suction are relatively low on the left and right sides of the main smoke inlet 110, while the flow velocity and suction are relatively high in the middle of the main smoke inlet 110. Therefore, smoke leakage and smoke escape are likely to occur on the left and right sides of the main smoke inlet 110, which means that smoke leakage and smoke escape are likely to occur on the left and right sides of the smoke collection hood 10.

[0032] To address the aforementioned issues, in this embodiment, mounting cavities 130 are respectively provided on the left and right sides of the smoke inlet chamber 120, and a smoke guide plate 140 is provided between the smoke inlet chamber 120 and the mounting cavity 130. A main smoke inlet 110 is provided between the smoke guide plates 140 on the left and right sides. The smoke guide plate 140 is provided with a first through hole 1411. The auxiliary fan module 200 includes an auxiliary fan 210, which is located in the mounting cavity 130. The inlet of the auxiliary fan 210 is connected to the first through hole 1411.

[0033] Based on the installation cavity 130, at least a portion of the auxiliary fan module 200 is disposed within the installation cavity 130. This reduces the airflow resistance of the smoke inlet cavity 120, and the installation cavity 130 also provides space for the installation of other components. The auxiliary fan module 200 on the left draws smoke through the first through hole 1411 on the left smoke guide plate 140, and the auxiliary fan module 200 on the right draws smoke through the first through hole 1411 on the right smoke guide plate 140. This strengthens the flow velocity and increases the suction power on the left and right sides of the main smoke inlet 110. When the main fan module 400 and the auxiliary fan module 200 are working, some flue gas enters the smoke inlet chamber 120 directly through the main smoke inlet 110 and then enters the receiving chamber 310. Some flue gas is drawn by the auxiliary fan module 200 through the first through hole 1411 and then transported to the receiving chamber 310. In this way, the smoke extraction effect on the left and right sides of the main smoke inlet 110 can be enhanced, which can reduce the phenomenon of smoke leakage and smoke escape on the left and right sides of the main smoke inlet 110 to a certain extent. That is, it can also reduce the phenomenon of smoke escape and smoke leakage on the left and right sides of the smoke hood 10 to a certain extent.

[0034] It is understandable that if the first through hole 1411 is directly connected to the smoke inlet chamber 120, the airflow entering the smoke inlet chamber 120 and the airflow entering the auxiliary fan module 200 from the first through hole 1411 are prone to interference and generate noise. Therefore, in some embodiments, the housing 100 also includes a rectifier plate 160, which is disposed in the smoke inlet chamber 120 and covers the first through hole 1411, so as to form an open rectifier cavity 161 between it and the smoke guide plate 140.

[0035] In this embodiment, a first through-hole 1411 is covered by a rectifier plate 160, and an open rectifier cavity 161 is formed between the rectifier plate 160 and the smoke guide plate 140. The rectifier cavity 161 and the first through-hole 1411 are connected, and the auxiliary fan module 200 intakes air through the rectifier cavity 161. The rectifier cavity 161 and the rest of the smoke inlet cavity 120 are relatively separated. Thus, when the auxiliary fan module 200 intakes air through the rectifier cavity 161, the interference between the intake of the rectifier cavity 161 and the intake of the rest of the smoke inlet cavity 120 is reduced, which helps to improve the smoke extraction effect and reduce noise. The smoke drawn by the auxiliary fan module 200 enters the rectifier cavity 161 through the open end of the rectifier cavity 161, then through the first through-hole 1411, and then flows sequentially through the inlet and outlet of the auxiliary fan 210, and finally is discharged into the receiving cavity 310. The open end of the rectifier cavity 161 on the left is located on the left side of the main smoke inlet 110, and the open end of the rectifier cavity 161 on the right is located on the right side of the main smoke inlet 110. The rectifier cavity 161 on the left is equipped with a secondary fan module 200, and the rectifier cavity 161 on the right is equipped with a secondary fan module 200. The open end of the rectifier cavity 161 constitutes a secondary smoke inlet, which strengthens the flow velocity and improves the suction power on the left and right sides of the main smoke inlet 110.

[0036] In some embodiments, combined with Figure 1 and Figure 2 As shown, the housing 100 includes a cover plate 150 located on the front side, the cover plate 150 is provided with a main smoke inlet 110, and the open end of the rectifier cavity 161 is exposed in the main smoke inlet 110.

[0037] By using the cover plate 150, most of the smoke inlet chamber 120 is concealed, thus preventing the interior of the smoke hood 10 from being exposed and improving the product's aesthetics. The cover plate 150 is provided with a main smoke inlet 110. In this embodiment, the main smoke inlet 110 is exposed through the open end of the rectifier cavity 161, so the rectifier cavity 161 and the smoke inlet chamber 120 share the main smoke inlet 110, which helps to simplify the structure. When the main fan module 400 and the auxiliary fan module 200 are working, some flue gas enters the smoke inlet chamber 120 directly through the main smoke inlet 110. The flue gas entering the smoke inlet chamber 120 then enters the receiving cavity 310. Some flue gas enters the rectifier cavity 161 through the main smoke inlet 110 and through the open end of the rectifier cavity 161. The flue gas entering the rectifier cavity 161 enters the interior of the auxiliary fan module 200 through the first through hole 1411, and then flows into the receiving cavity 310.

[0038] In some embodiments, combined with Figure 1 and Figure 2 As shown, the rectifier cavity 161 is open to the front and / or downward.

[0039] The range hood is installed on the wall, above the gas stove. During cooking, the smoke generally rises from bottom to top. Therefore, the smoke inlet 120 is designed to open forward and / or downward (i.e., the main smoke inlet 110 opens forward and / or downward), facilitating the entry of smoke into the smoke inlet 120 through the main smoke inlet 110. Based on this, the rectifier 161 is also designed to open forward and / or downward, allowing smoke to easily enter the rectifier 161. For example, the opening direction of the rectifier 161 is set in the same direction as the opening direction of the main smoke inlet 110, which helps to reduce the mutual interference between the airflow entering the rectifier 161 and the airflow directly entering the smoke inlet 120, increases the airflow velocity entering the rectifier 161, and enhances the smoke capture effect of the auxiliary fan module 200 on the left and right sides of the main smoke inlet 110. It is understandable that when the rectifier cavity 161 is open both forward and downward, that is, when the rectifier cavity 161 is open forward and downward.

[0040] In some embodiments, combined with Figures 3 to 5 As shown, the outlet of the auxiliary fan 210 is connected to the smoke inlet chamber 120. When the range hood is working (the main fan module 400 and the auxiliary fan module 200 are started), some smoke directly enters the smoke inlet chamber 120 through the main smoke inlet 110, and some smoke can be drawn in by the auxiliary fan module 200 and then discharged into the smoke inlet chamber 120. The aforementioned smoke eventually enters the receiving chamber 310 and is discharged to the outside by the main fan module 400.

[0041] In some embodiments, combined with Figures 3 to 5As shown, the smoke guide plate 140 is also provided with a second through hole 1412, and the auxiliary fan module 200 also includes a smoke guide duct 223. The smoke guide duct 223 passes through the second through hole 1412, and the inlet of the smoke guide duct 223 is connected to the outlet of the auxiliary fan 210, and the outlet of the smoke guide duct 223 is connected to the smoke inlet chamber 120.

[0042] The smoke guide duct 223 is used to guide the flue gas drawn out by the auxiliary fan 210. In this embodiment, the smoke guide duct 223 passes through the second through hole 1412, so that part of the smoke guide duct 223 is located in the smoke inlet chamber 120 and the other part is located in the mounting chamber 130. The arrangement of the smoke guide duct 223 allows for a more flexible design of the position of the auxiliary fan 210, making it easier to return the flue gas drawn out by the auxiliary fan 210 to the smoke inlet chamber 120. Since part of the smoke guide duct 223 is located in the smoke inlet chamber 120, the flue gas discharged by the smoke guide duct 223 can reach a more reasonable position. Typically, the smoke guide duct 223 is a one-piece molded part, but it can also be assembled from at least two parts. The smoke guide duct 223 guides the flue gas to avoid diffusion in the mounting chamber 130.

[0043] As described above, the smoke guide plate 140 is positioned between the smoke inlet chamber 120 and the mounting chamber 130, effectively separating the smoke inlet chamber 120 and the mounting chamber 130. Thus, the housing 100 has a relatively independent space relative to the smoke inlet chamber 120. The smoke guide plate 140 forms the wall of both the smoke inlet chamber 120 and the mounting chamber 130. Based on the arrangement of the smoke guide duct 223, the relatively independent mounting chamber 130 effectively prevents smoke from entering when the range hood is operating. This allows other components to be installed in the mounting chamber 130, preventing contamination from smoke. For example, a motor for driving the panel 170 to open and close the smoke inlet chamber 120 can be installed in the mounting chamber 130. Of course, it can also be used to install other components, which will not be elaborated upon here.

[0044] In some embodiments, combined with Figure 3 and Figure 4 As shown, the smoke guide plate 140 includes a first side plate 141 and a second side plate 142. The first side plate 141 is provided with a first through hole 1411 and a second through hole 1412. The second side plate 142 is inclined from the first side plate 141, and the second side plates 142 of the left and right sides of the smoke guide plate 140 are inclined toward each other. This arrangement helps to increase the smoke intake range of the smoke inlet chamber 120111.

[0045] Since the smoke inlet chamber 120 has mounting cavities 130 on its left and right sides respectively, it also has smoke guide plates 140 on its left and right sides. The first side plate 141 has a first through hole 1411 and a second through hole 1412. Smoke guide plates 140 are provided on the left and right sides of the smoke inlet chamber 120 respectively. The first side plate 141 of the left smoke guide plate 140 is vertically arranged, and the second side plate 142 of the left smoke guide plate 140 is inclined to the upper right from the first side plate 141 of the left smoke guide plate 140. The first side plate 141 of the right smoke guide plate 140 is vertically arranged, and the second side plate 142 of the right smoke guide plate 140 is inclined to the upper right from the first side plate 141 of the left smoke guide plate 140. The second side plate 142 of the plate 140 is inclined to the upper left from the first side plate 141 of the right smoke guide plate 140. In this way, the channel formed between the second side plate 142 on the left and the second side plate 142 on the right can be connected to the receiving cavity 310 of the frame 300 located above. At the same time, the cooperation between the first side plate 141 on the left and the first side plate 141 on the right can make the smoke inlet cavity 120 have a larger smoke collection range in the left and right directions, enhance the collection of smoke, and the inclined arrangement of the second side plate 142 can facilitate the guidance of smoke to the receiving cavity 310, reducing airflow resistance.

[0046] In some embodiments, combined with Figure 3 and Figure 4 As shown, the portion of the smoke guide duct 223 located in the smoke inlet chamber 120 extends along the inclined direction of the second side plate 142. With this arrangement, the flow direction of the flue gas flowing in the smoke inlet chamber 120 near the second side plate 142 is basically in the same direction as the extension direction of the portion of the smoke guide duct 223 located in the smoke inlet chamber 120, effectively reducing the flow resistance of the flue gas in the smoke inlet chamber 120.

[0047] In some embodiments, combined with Figure 3 and Figure 4 As shown, the outlet of the smoke guide duct 223 opens along the inclined direction of the second side plate 142. With this arrangement, the direction of the airflow discharged from the smoke guide duct 223 is aligned with the inclined direction of the second side plate 142. The direction of the airflow discharged from the smoke guide duct 223 is the same as the direction of the airflow flowing along the second side plate 142 in the smoke inlet chamber 120, further reducing interference between airflows, improving the smoke extraction effect, and reducing noise.

[0048] In some embodiments, combined with Figure 3 and Figure 4 As shown, the minimum distance between the portion of the smoke guide duct 223 located in the smoke inlet chamber 120 and the second side plate 142 is no more than 10 mm. This makes the portion of the smoke guide duct 223 located in the smoke inlet chamber 120 closer to the second side plate 142, further reducing the resistance to airflow in the smoke inlet chamber 120. For example, the portion of the smoke guide duct 223 located in the smoke inlet chamber 120 is in close contact with the second side plate 142.

[0049] In some embodiments, combined with Figure 3 and Figure 4 As shown, the second side plate 142 has a first end 1421 that intersects with the first side plate 141 and a second end 1422 that is away from the first end 1421. Along the inclined direction of the second side plate 142, the outlet of the smoke duct 223 is located between the first end 1421 and the second end 1422.

[0050] The second end 1422 intersects with the frame 300. Along the inclined direction of the second side plate 142, the outlet of the smoke guide duct 223 is located between the first end 1421 and the second end 1422. This avoids the smoke guide duct 223 extending too far into the smoke inlet chamber 120, which would increase the wind resistance of the smoke inlet chamber 120. The flue gas discharged from the smoke guide duct 223 can be fully mixed with the smoke inlet chamber 120 before entering the receiving cavity 310 of the frame 300, thus reducing noise.

[0051] Since the smoke guide plate 140 separates the smoke inlet chamber 120 and the mounting chamber 130, the smoke guide plate 140 constitutes the cavity wall of the smoke inlet chamber 120. Airflow flowing along the surface of the smoke guide plate 140 in the smoke inlet chamber 120 easily forms vortices. The formation of vortices not only increases flow resistance but also increases noise and weakens the range hood's smoke extraction effect. The outlet of the smoke guide duct 223 is located between the first end 1421 and the second end 1422. Thus, the airflow discharged from the smoke guide duct 223 can enhance the airflow velocity flowing along the surface of the smoke guide plate 140, thereby weakening the vortices. This helps reduce flow resistance, decrease noise, and enhance the smoke extraction effect. Furthermore, when the airflow discharged from the smoke guide duct 223 flows towards the receiving cavity 310 of the frame 300, it can also enhance the airflow velocity flowing along the inner wall of the frame 300, reducing the generation of vortices on the inner wall of the frame 300. In particular, when the part of the smoke guide duct 223 located in the smoke inlet chamber 120 is in close contact with the second side plate 142, the airflow discharged from the smoke guide duct 223 flows along the second side plate 142, which is more conducive to enhancing the elimination of eddies.

[0052] The second aspect of this application discloses a range hood, which in some embodiments combines... Figures 1 to 6As shown, the range hood includes the aforementioned smoke collection hood 10. The smoke collection hood 10 includes a housing 100 and a secondary fan module 200. The housing 100 includes a main smoke inlet 110, a smoke inlet chamber 120, a mounting cavity 130, a smoke guide plate 140, and a rectifier plate 160. The main smoke inlet 110 and the smoke inlet chamber 120 are connected. Mounting cavities 130 are respectively provided on the left and right sides of the smoke inlet chamber 120, and a smoke guide plate 140 is provided between the smoke inlet chamber 120 and the mounting cavity 130. 0. A main smoke inlet 110 is provided between the smoke guide plates 140 on the left and right sides. The smoke guide plate 140 is provided with a first through hole 1411. The rectifier plate 160 is provided in the smoke inlet cavity 120 and covers the first through hole 1411, so that an open rectifier cavity 161 is formed between it and the smoke guide plate 140. The auxiliary fan module 200 includes an auxiliary fan 210. The auxiliary fan 210 is provided in the mounting cavity 130. The inlet of the auxiliary fan 210 is connected to the first through hole 1411.

[0053] By setting the auxiliary fan module 200, the flow velocity near the left and right sides of the smoke hood 10 is enhanced, thereby improving the smoke control capability of the smoke hood 10 and suppressing the occurrence of smoke escape and leakage.

[0054] For example, the range hood also includes a frame 300 and a main fan module 400. The frame 300 is provided with a receiving cavity 310. The main fan module 400 is located in the receiving cavity 310. The smoke collection hood 10 is connected to the frame 300. The smoke inlet cavity 120 is connected to the receiving cavity 310. The outlet of the auxiliary fan 210 is connected to the receiving cavity 310. Specifically, when the main fan module 400 and the auxiliary fan module 200 are working, some flue gas enters the smoke inlet chamber 120 through the main smoke inlet 110, then enters the receiving chamber 310 and is discharged to the outside by the main fan module 400. Some flue gas is drawn in by the auxiliary fan module 200 and discharged into the smoke inlet chamber 120, then enters the receiving chamber 310 and is discharged to the outside by the main fan module 400. Through the cooperation of the auxiliary fan module 200 and the housing 100, the smoke extraction effect on the left and right sides of the smoke collection hood 10 is enhanced, reducing the occurrence of smoke escape and leakage. Optionally, the range hood is a side-suction range hood, with the main smoke inlet 110 opening downwards and forwards to facilitate the extraction of flue gas from the front and lower sides, and the rectifier chamber 161 opening downwards and forwards to facilitate the extraction of flue gas from the front and lower sides. It is understood that the smoke collection hood 10 of the range hood in this embodiment adopts the technical solution of the above embodiment, and therefore has at least the beneficial effects brought about by the technical solution of the above embodiment, which will not be repeated here.

[0055] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A smoke collection hood (10), characterized in that, The smoke hood (10) includes: A housing (100) includes a main smoke inlet (110), a smoke inlet chamber (120), a mounting cavity (130), and a smoke guide plate (140). The main smoke inlet (110) and the smoke inlet chamber (120) are connected. The mounting cavities (130) are respectively provided on the left and right sides of the smoke inlet chamber (120), and the smoke guide plate (140) is provided between the smoke inlet chamber (120) and the mounting cavity (130). The main smoke inlet (110) is provided between the left and right sides of the smoke guide plates (140), and the smoke guide plate (140) is provided with a first through hole (1411). A secondary fan module (200) includes a secondary fan (210), which is located in the mounting cavity (130). The inlet of the secondary fan (210) is connected to the first through hole (1411).

2. The smoke hood (10) as described in claim 1, characterized in that, The housing (100) further includes a rectifier plate (160), which is disposed in the smoke inlet chamber (120) and covers the first through hole (1411) to form an open rectifier chamber (161) between itself and the smoke guide plate (140).

3. The smoke hood (10) as described in claim 2, characterized in that, The housing (100) includes a cover plate (150) located on the front side, the cover plate (150) having the main smoke inlet (110), and the open end of the rectifier cavity (161) being exposed at the main smoke inlet (110).

4. The smoke hood (10) as described in claim 2, characterized in that, The rectifier cavity (161) is open to the front and / or the bottom; And / or, the opening direction of the open end of the rectifier cavity (161) is set in the same direction as the opening direction of the main smoke inlet (110).

5. The smoke hood (10) as described in claim 1, characterized in that, The outlet of the auxiliary fan (210) is connected to the smoke inlet chamber (120).

6. The smoke hood (10) as described in claim 5, characterized in that, The smoke guide plate (140) is also provided with a second through hole (1412). The auxiliary fan module (200) also includes a smoke guide duct (223). The smoke guide duct (223) passes through the second through hole (1412), and the inlet of the smoke guide duct (223) is connected to the outlet of the auxiliary fan (210). The outlet of the smoke guide duct (223) is connected to the smoke inlet chamber (120).

7. The smoke hood (10) as described in claim 6, characterized in that, The smoke guide plate (140) includes a first side plate (141) and a second side plate (142). The first side plate (141) is provided with a first through hole (1411) and a second through hole (1412). The second side plate (142) is inclined from the first side plate (141), and the second side plates (142) of the smoke guide plate (140) on the left and right sides are inclined towards each other.

8. The smoke hood (10) as described in claim 7, characterized in that, The portion of the smoke guide duct (223) located in the smoke inlet chamber (120) extends along the inclined direction of the second side plate (142); And / or, the outlet of the smoke duct (223) is open along the inclined direction of the second side plate (142).

9. The smoke hood (10) as described in claim 7, characterized in that, The minimum distance between the portion of the smoke duct (223) located in the smoke inlet chamber (120) and the second side plate (142) is no greater than 10 mm.

10. The smoke hood (10) as described in claim 9, characterized in that, The portion of the smoke guide duct (223) located in the smoke inlet chamber (120) is in close contact with the second side plate (142).

11. The smoke hood (10) as described in claim 7, characterized in that, The second side plate (142) has a first end (1421) intersecting with the first side plate (141) and a second end (1422) away from the first end (1421). Along the inclined direction of the second side plate (142), the outlet of the smoke guide duct (223) is located between the first end (1421) and the second end (1422).

12. A range hood, characterized in that, The range hood includes the smoke collection hood (10) as described in any one of claims 1 to 11.

13. The range hood as described in claim 12, characterized in that, The range hood also includes a frame (300) and a main fan module (400). The frame (300) is provided with a receiving cavity (310). The main fan module (400) is located in the receiving cavity (310). The smoke collection hood (10) is connected to the frame (300). The smoke inlet cavity (120) is connected to the receiving cavity (310). The outlet of the auxiliary fan (210) is connected to the receiving cavity (310).

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