Range hood

Abstract

The utility model provides a range hood. The range hood comprises a range hood lower cavity main body and a fan system, a smoke inlet is formed in the range hood lower cavity main body, the range hood further comprises a transition connecting part, and the transition connecting part is connected between the range hood lower cavity main body and the fan system in the vertical direction. And a transition air duct is arranged in the transition connecting part and can be communicated between the range hood lower cavity and the fan system. According to the range hood, the transition connecting part is additionally arranged between the range hood lower cavity main body and the fan system in the vertical direction, so that the height of the smoke inlet is reduced, the distance between the smoke inlet and a smoke generating position is relatively close, the oil smoke trapping capability is favorably improved, and oil smoke is not easy to escape too much; therefore, compared with the prior art, the boundary dimension of the lower cavity main body of the range hood can be set to be smaller, and the cleaning area can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of kitchen utensils, in particular to a range hood. Background Art

[0002] At present, range hoods have been widely used by users to extract cooking fumes. A range hood generally includes a fan system located above and a main body of the lower cavity of the range hood located below. Vertically, the main body of the lower cavity of the range hood and the fan system are adjacent, and an air inlet is provided on the main body of the lower cavity of the range hood.

[0003] Oil fume capture is a process of twisting the direction of the velocity of oil fume by aerodynamic force before the oil fume reaches force balance towards the air inlet of the range hood. In order to improve the oil fume extraction effect of the range hood, most of the lower part of the main body of the lower cavity of the top - mounted range hood is currently provided with a flat plate as a smoke guide plate. However, since the air inlet of the top - mounted range hood is usually at a relatively high position from the smoke - generating position, in order to reduce oil fume escape, the overall shape of the main body of the lower cavity of the range hood is generally large, and the size of the smoke guide plate suspended below it is also designed to be large, resulting in a large area that needs to be cleaned after daily use by users. In the prior art, along the front - to - back direction, the depth of the main body of the lower cavity of the range hood is usually greater than that of the fan system, where the front - to - back direction corresponds to the direction from the user to the range hood when the range hood is in the installed state and the user is facing the range hood directly.

[0004] In addition, the smoke guide plate also has a certain weight, and problems such as dropping when being disassembled during the cleaning process by users are likely to occur. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the defect that the overall shape of the main body of the lower cavity of the range hood in the prior art is large and the area that needs to be cleaned is also large, and to provide a range hood.

[0006] The utility model solves the above - mentioned technical problem through the following technical solutions:

[0007] A range hood includes a main body of the lower cavity of the range hood and a fan system. An air inlet is provided on the main body of the lower cavity of the range hood. The range hood further includes a transition connection part. Vertically, the transition connection part is connected between the main body of the lower cavity of the range hood and the fan system;

[0008] Wherein, a transition air duct is provided inside the transition connection part, and the transition air duct can communicate between the lower cavity of the range hood and the fan system.

[0009] In this solution, along the vertical direction, a transition connection part is added between the lower cavity body of the range hood and the fan system, reducing the height of the smoke inlet, making the smoke inlet closer to the smoking position, which is beneficial to improving the oil fume capture ability and preventing excessive oil fume from escaping. As a result, the external dimension of the lower cavity body of the range hood can be set smaller than that of the prior art, thereby reducing the cleaning area.

[0010] Preferably, a baffle is provided inside the transition connection part, and the baffle is located in the extending direction of the transition air duct;

[0011] Wherein, the baffle can be switched between an open state and a closed state;

[0012] When the baffle is in the open state, the transition air duct is in a connected state to connect the lower cavity of the range hood and the fan system;

[0013] When the baffle is in the closed state, the transition air duct is in a non-connected state to limit the connection between the lower cavity of the range hood and the fan system.

[0014] In this solution, with the above structural arrangement, the baffle can be flexibly switched between the open state and the closed state according to actual setting needs, which is beneficial to meeting different usage requirements of users. Among them, when there is no need to smoke, setting the baffle to the closed state is beneficial to preventing external impurities from entering the interior of the fan system through the transition air duct, and is beneficial to ensuring the safety of the fan system and the range hood.

[0015] Preferably, along the flow direction of the flue gas, one end of the transition air duct close to the lower cavity body of the range hood is the inlet end, and one end of the transition air duct close to the fan system is the outlet end;

[0016] The baffle is configured as:

[0017] When the pressure from the flue gas received by the baffle at the inlet end is greater than the gravity of the baffle, the baffle is in the open state;

[0018] When the pressure from the flue gas received by the baffle at the inlet end is less than the gravity of the baffle, the baffle is in the closed state.

[0019] In this solution, with the above structural arrangement, the automatic switching of the baffle state can be realized by using the relationship between the self-gravity of the baffle and the flue gas pressure at the inlet end. On the one hand, there is no need to additionally provide a mechanical structure for realizing the adjustment of the baffle state; on the other hand, according to the different magnitudes of the flue gas pressure, when the baffle is in the open state, different sizes of openings can be conveniently realized.

[0020] Preferably, the baffle includes two plate elements symmetrically arranged. The first end of any one of the plate elements is connected to the inner wall surface of the transition connection part, and the second end is used for splicing with the other plate element;

[0021] Wherein, when the baffle is in the fully open state, the plate element fits on the inner wall surface of the transition connection part, and the second ends of the two plate elements are separated;

[0022] When the baffle is in the closed state, the second ends of the two plate elements are joined.

[0023] In this solution, the baffle is set as two plate elements that can be joined and separated. Compared with a whole baffle, this setting makes it easier for the baffle to switch states after the flue gas flows in, so as to achieve a better smoking effect. In addition, when the baffle is in the fully open state, the plate element fits on the inner wall surface of the transition connection part, so that the baffle is not likely to affect the connection between the lower cavity body of the range hood and the fan system, and thus is not likely to affect the smoking effect.

[0024] Preferably, the baffle is configured as:

[0025] When the range hood is in the on state, the baffle is in the open state;

[0026] When the range hood is in the off state, the baffle is in the closed state.

[0027] In this solution, with the above structure setting, when the range hood is turned on for smoking, the baffle can be switched to the open state in time, so as to process the oil fume in time and reliably; when the range hood is turned off without smoking, the baffle can also be switched to the closed state correspondingly, so as to isolate the fan system from the external environment to a certain extent, which is beneficial to ensuring the safety of the range hood.

[0028] Preferably, the baffle is made of fireproof material.

[0029] In this solution, since the baffle is made of fireproof material, even in extreme cases such as a fire, the baffle can reliably isolate the fan system from the external environment, which is beneficial to further ensuring the safety of the range hood.

[0030] Preferably, along the front-rear direction, the depth of the lower cavity body of the range hood is not greater than the depth of the fan system;

[0031] Wherein, the front-rear direction corresponds to the direction from the user to the range hood when the range hood is in the installed state and the user is facing the range hood directly.

[0032] In this solution, with the above structure, compared with the prior art, the depth dimension of the main body of the lower cavity of the range hood is smaller, which is beneficial to greatly reducing the external dimension of the main body of the lower cavity of the range hood, and further beneficial to reducing the cleaning area.

[0033] Preferably, along the horizontal direction, the length of the transition connecting part is 360 - 400 mm; along the front-back direction, the depth of the transition connecting part is 130 - 150 mm, the depth of the main body of the lower cavity of the range hood is 280 - 300 mm, and the depth of the fan system is 300 - 330 mm;

[0034] And / or, along the vertical direction, the sum of the heights of the fan system, the transition connecting part and the main body of the lower cavity of the range hood is 720 - 750 mm.

[0035] In this solution, with the above structure, the dimension ranges of the various structural components of the range hood can, on the basis of meeting the smoking effect of the range hood, greatly reduce the external dimension of the main body of the lower cavity of the range hood, and further greatly reduce the cleaning area.

[0036] Preferably, the range hood is a top - suction range hood, and the range hood further includes a smoke guide plate, which is detachably connected to the main body of the lower cavity of the range hood and hangs below the main body of the lower cavity of the range hood.

[0037] In this solution, with the above structure, since the external dimension of the main body of the lower cavity of the range hood is reduced, the size of the smoke guide plate can be reduced, and the weight is also correspondingly reduced, which is beneficial to further reducing the cleaning area, and is beneficial to reducing or avoiding problems such as easy dropping when disassembling during the cleaning process due to the overweight of the smoke guide plate. At the same time, since the position of the smoke outlet is lowered, the operation height during the disassembly and assembly process by the user is also correspondingly reduced, which is convenient for the user to timely observe the oil accumulation on the smoke guide plate and avoid pouring out the accumulated oil during the process, and is beneficial to improving the user's cleaning experience as a whole.

[0038] Preferably, both ends of the transition connecting part along the vertical direction extend into the interior of the fan system and the main body of the lower cavity of the range hood respectively, and are attached to and hermetically connected to the inner wall surfaces of the corresponding fan system and the main body of the lower cavity of the range hood.

[0039] In this solution, with the above structure, it is beneficial to both realize the connection between the transition connecting part and the fan system and the main body of the lower cavity of the range hood, and to ensure the sealing performance between the transition connecting part and the fan system and the main body of the lower cavity of the range hood, which is beneficial to further ensuring the smoking effect of the range hood.

[0040] The positive and progressive effects of the present utility model are as follows:

[0041] In this range hood, a transition connection part is additionally provided between the lower cavity main body of the hood and the fan system in the vertical direction, which reduces the height of the smoke inlet, makes the smoke inlet closer to the smoke generating position, is beneficial to improving the oil fume capture ability, and it is not easy for too much oil fume to escape. Thus, the external dimension of the lower cavity main body of the hood can be set smaller than that of the prior art, and further, the cleaning area can be reduced. Brief Description of the Drawings

[0042] Figure 1 Schematic perspective view of a range hood according to an embodiment of the present invention.

[0043] Figure 2 Another schematic perspective view of a range hood according to an embodiment of the present invention.

[0044] Figure 3 Schematic internal structure view of a range hood according to an embodiment of the present invention.

[0045] Figure 4 Schematic partial structure view of a range hood according to an embodiment of the present invention, wherein the smoke guide plate is not shown in the figure.

[0046] Figure 5 Schematic structure view of the transition connection part of a range hood according to an embodiment of the present invention, and the viewing angle shown in the figure is from the inlet end of the transition connection part to the inside.

[0047] Figure 6 Schematic structure view of the transition connection part of a range hood according to an embodiment of the present invention, and the viewing angle shown in the figure is from the outlet end of the transition connection part to the inside.

[0048] Figure 7 Schematic partial structure view of the transition connection part of a range hood according to an embodiment of the present invention, wherein only one plate element is shown in the figure.

[0049] Description of the Reference Numerals:

[0050] 10 Lower cavity main body of the hood

[0051] 101 Smoke inlet

[0052] 20 Fan system

[0053] 30 Transition connection part

[0054] 301 Transition air duct

[0055] 302 Baffle

[0056] 303 Plate element

[0057] 40 Smoke guide plate

[0058] 50 Fastener

[0059] Front - rear direction Specific implementation manner

[0060] The following gives a preferred embodiment and, in conjunction with the accompanying drawings, more clearly and completely illustrates the present utility model.

[0061] As Figures 1 to 7 shown, this embodiment provides a range hood, which includes a lower cavity main body 10 of the range hood and a fan system 20. An air inlet 101 is provided on the lower cavity main body 10 of the range hood. The range hood further includes a transition connection part 30. Along the vertical direction, the transition connection part 30 is connected between the lower cavity main body 10 of the range hood and the fan system 20. Among them, the interior of the transition connection part 30 has a transition air duct 301, and the transition air duct 301 can communicate between the lower cavity of the range hood and the fan system 20.

[0062] In this embodiment, along the vertical direction, a transition connection part 30 is added between the lower cavity main body 10 of the range hood and the fan system 20, reducing the height of the air inlet 101, making the air inlet 101 closer to the smoke - generating position, which is beneficial to improving the oil - smoke capture ability. It is not easy for too much oil - smoke to escape. Thus, the external dimension of the lower cavity main body 10 of the range hood can be set to be smaller than the prior art, and further, the cleaning area can be reduced.

[0063] It should be noted that this range hood is mainly aimed at the top - suction range hood. However, according to actual setting requirements, this structural form of the range hood can also be correspondingly applied to the low - suction range hood and the side - suction range hood.

[0064] In addition, it should be noted that the current improvement of this application focuses on the transition connection part 30 and its related structural settings, rather than the fan system 20 and the lower cavity main body 10 of the range hood. The structures of the fan system 20 and the lower cavity main body 10 of the range hood can adopt the corresponding structures in the prior art, which are well - known to those skilled in the art and will not be elaborated here. Correspondingly, the fan system 20 and the lower cavity main body 10 in the accompanying drawings are only schematically shown.

[0065] As Figures 1 to 4As shown, the range hood further includes a smoke guide plate 40. The smoke guide plate 40 is detachably connected to the lower cavity body 10 of the range hood and is suspended below the lower cavity body 10 of the range hood. Among them, since the external dimension of the lower cavity body 10 of the range hood is reduced, the size of the smoke guide plate 40 can be reduced accordingly, and the weight is also reduced correspondingly, which is beneficial to further reducing the cleaning area and is beneficial to reducing or avoiding problems such as accidental dropping during disassembly during the cleaning process due to the overweight of the smoke guide plate 40. At the same time, since the position of the smoke outlet is lowered, the operating height during the disassembly and assembly process by the user is also correspondingly reduced, which is convenient for the user to timely observe the oil accumulation situation on the smoke guide plate 40 and avoid pouring out the accumulated oil stains thereon during the process, which is beneficial to overall improving the user's cleaning experience.

[0066] It should be noted that in this embodiment, as Figures 2 to 4 shown, the smoke guide plate 40 is installed on the lower cavity body 10 of the range hood through four fasteners 50 and is suspended below the lower cavity body 10 of the range hood. The smoke guide plate 40 is located at a position corresponding to the smoke outlet. Referring to Figures 2 to 4 for understanding, the smoke inlet 101 is located in the middle of the side of the lower cavity body 10 of the range hood facing the smoke guide plate 40. On this side, the middle is recessed inward relative to both ends. That is to say, the end face of the side of the lower cavity body 10 of the range hood facing the smoke guide plate 40 itself can already play a certain role in blocking or gathering smoke. On this basis, combined with the setting of the smoke guide plate 40, a better smoking effect can be obtained without additionally setting a smoke baffle. For existing low-suction range hoods and side-suction range hoods, a smoke baffle is usually set. The setting of the smoke baffle will form a gap between the smoke baffle and the corresponding lower cavity body 10 of the range hood, and the existence of this gap is likely to cause the problem of smoke leakage. Therefore, since this range hood can be without a smoke baffle, it can correspondingly avoid the problem of smoke leakage from the gap.

[0067] The connection method of the transition connection part 30 with the lower cavity body 10 of the range hood and the fan system 20 is not specifically limited here, as long as reliable connection can be achieved without affecting the normal use of the range hood.

[0068] Specifically, in this embodiment, as a preferred setting method, as Figures 1 to 3 shown, the two ends of the transition connection part 30 in the vertical direction respectively extend into the interior of the fan system 20 and the lower cavity body 10 of the range hood and are attached to and hermetically connected to the inner wall surfaces of the corresponding fan system 20 and the lower cavity body 10 of the range hood. Such a setting is beneficial to both realizing the connection of the transition connection part 30 with the fan system 20 and the lower cavity body 10 of the range hood and ensuring the sealing performance of the transition connection part 30 with the fan system 20 and the lower cavity body 10 of the range hood, which is beneficial to further ensuring the smoking effect of the range hood.

[0069] In the above setting, the transition connection part 30 can be connected to the fan system 20 and the lower cavity body 10 of the range hood by welding or bonding.

[0070] There is no specific limitation on the specific structure or shape of the transition connection part 30 here, and it can be adaptively adjusted according to actual needs. In this embodiment, as a preferred setting method, as Figures 3 to 7 shown, a baffle 302 is arranged inside the transition connection part 30, and the baffle 302 is located in the extending direction of the transition air duct 301. Among them, the baffle 302 can be switched between an open state and a closed state. When the baffle 302 is in the open state, the transition air duct 301 is in a communicating state to connect the lower cavity of the range hood and the fan system 20; when the baffle 302 is in the closed state, the transition air duct 301 is in a non-communicating state to limit the connection between the lower cavity of the range hood and the fan system 20.

[0071] With such a setting, it is possible to flexibly switch the baffle 302 between the open state and the state according to actual setting needs, which is beneficial to meeting different usage requirements of users. Among them, when there is no need to smoke, the baffle 302 is set to the closed state, which is beneficial to preventing external impurities from entering the inside of the fan system 20 through the transition air duct 301, and is beneficial to ensuring the safety of the fan system 20 and the range hood.

[0072] It should be noted that the switching of the state of the baffle 302 can be achieved manually or automatically, and can be achieved by utilizing the structural characteristics or by setting a mechanical structure.

[0073] Specifically in this embodiment, along the flowing direction of the flue gas, one end of the transition air duct 301 close to the lower cavity body 10 of the range hood is the inlet end, and one end of the transition air duct 301 close to the fan system 20 is the outlet end. The baffle 302 is configured as follows: when the pressure from the flue gas received by the baffle 302 at the inlet end is greater than the gravity of the baffle 302, the baffle 302 is in the open state; when the pressure from the flue gas received by the baffle 302 at the inlet end is less than the gravity of the baffle 302, the baffle 302 is in the closed state.

[0074] Through the above setting, the automatic switching of the state of the baffle 302 can be realized by using the relationship between the self-gravity of the baffle 302 and the flue gas pressure at the inlet end. On the one hand, there is no need to additionally set up a mechanical structure for realizing the state adjustment of the baffle 302; on the other hand, according to the different magnitudes of the flue gas pressure, when the baffle 302 is in the open state, different sizes of openings can be conveniently realized.

[0075] It should be noted that the principle of automatically switching the state of the baffle 302 by utilizing the relationship between the self-gravity of the baffle 302 and the flue gas pressure at the inlet end is similar to that of a butterfly valve, which can conveniently and reliably achieve state switching. The specific principle will not be elaborated here.

[0076] As Figures 4 to 7 shown, the baffle 302 includes two plate elements 303 symmetrically arranged. The first end of any one plate element 303 is connected to the inner wall surface of the transition connection part 30, and the second end is used to be joined with the other plate element 303. Among them, when the baffle 302 is in the fully open state, the plate element 303 fits on the inner wall surface of the transition connection part 30, and the second ends of the two plate elements 303 are separated. When the baffle 302 is in the closed state, the second ends of the two plate elements 303 are joined.

[0077] Among them, setting the baffle 302 as two plate elements 303 that can be joined and separated makes it easier for the baffle 302 to switch its state after the flue gas flows in compared to a whole baffle 302, thus achieving a better smoking effect. In addition, when the baffle 302 is in the fully open state, the plate element 303 fits on the inner wall surface of the transition connection part 30, so that the baffle 302 is not likely to affect the connection between the main body 10 of the lower cavity of the range hood and the fan system 20, and further is not likely to affect the smoking effect.

[0078] It should be noted that when the baffle 302 has only one open position, the above-mentioned fully open state corresponds to the state when the baffle 302 is in that open position. When the baffle 302 has multiple open positions, the above-mentioned fully open state corresponds to the state when the baffle 302 is at the maximum opening amplitude.

[0079] In addition, it should be noted that: (1) In other alternative embodiments, the number of plate elements 303 can be set to three or more, as long as each plate can selectively open or close the transition air duct 301; (2) At least with reference to Figure 3 it can be understood that when observing from the inlet end of the transition air duct 301, the two plate elements 303 form an obtuse angle. With such a setting, it is easier to realize the state switching of the plate element 303 under the action of the flue gas, and thus it is beneficial to ensure the smoking effect of the range hood.

[0080] Further, in this embodiment, the baffle 302 is configured such that when the range hood is in the on state, the baffle 302 is in the open state; when the range hood is in the off state, the baffle 302 is in the closed state. With this arrangement, when the range hood is turned on for smoking, the baffle 302 can be promptly switched to the open state, thereby enabling timely and reliable treatment of the fumes; when the range hood is turned off without the need for smoking, the baffle 302 can also be correspondingly switched to the closed state, thereby enabling a certain degree of isolation between the blower system 20 and the external environment, which is conducive to ensuring the safety of the range hood.

[0081] Furthermore, the baffle 302 is made of fireproof material. Since the baffle 302 is made of fireproof material, even in extreme situations such as a fire, the baffle 302 can relatively reliably isolate the blower system 20 from the external environment, which is conducive to further ensuring the safety of the range hood. It should be noted that the baffle 302 is preferably made of a fireproof board, and of course, it can also be set to other fireproof materials.

[0082] In this embodiment, along the front-rear direction, the depth of the lower cavity body 10 of the range hood is not greater than the depth of the blower system 20. Here, the front-rear direction corresponds to the direction from the user to the range hood when the range hood is in the installed state and the user is facing the range hood directly. Figure 1 and Figure 2 The front-rear direction D is schematically shown in

[0083] With the above arrangement, compared with the prior art, the depth dimension of the lower cavity body 10 of the range hood is smaller, which is conducive to greatly reducing the external dimension of the lower cavity body 10 of the range hood, and further conducive to reducing the cleaning area.

[0084] Specifically, for the dimensions of each part of the range hood, the following parameters can be referred to for setting: (1) Along the horizontal direction, the length of the transition connection part 30 is 360 - 400 mm; (2) Along the front-rear direction, the depth of the transition connection part 30 is 130 - 150 mm, the depth of the lower cavity body 10 of the range hood is 280 - 300 mm, and the depth of the blower system 20 is 300 - 330 mm; (3) Along the vertical direction, the sum of the heights of the blower system 20, the transition connection part 30, and the lower cavity body 10 of the range hood is 720 - 750 mm. By adopting the above dimension ranges of the various structural components of the range hood, on the basis of meeting the smoking effect of the range hood, the external dimension of the lower cavity body 10 of the range hood can be greatly reduced, and thus the cleaning area can be greatly reduced.

[0085] In summary, in this range hood, a transition connection part 30 is added between the lower cavity body 10 of the hood and the fan system 20 in the vertical direction, reducing the height of the smoke inlet 101, making the smoke inlet 101 closer to the smoke generation position, which is beneficial to improving the oil fume capture ability and preventing excessive oil fume from escaping. As a result, the external dimension of the lower cavity body 10 of the hood can be set smaller than that of the prior art, thereby reducing the cleaning area. Additionally, since the external dimension of the lower cavity body 10 of the hood is reduced, the size of the smoke guide plate 40 can be reduced accordingly, and the weight is also reduced correspondingly, which is beneficial to further reducing the cleaning area and avoiding problems such as accidental dropping during disassembly during the cleaning process caused by the overweight of the smoke guide plate 40. At the same time, since the position of the smoke outlet is lowered, the operation height during the disassembly and assembly process by the user is also correspondingly reduced, facilitating the user to observe the accumulated oil on the smoke guide plate 40 in a timely manner and preventing the oil accumulated thereon from being poured out during the process, which is beneficial to improving the overall cleaning experience of the user. Further, since this range hood does not need to be provided with a smoke baffle, the problem of smoke leakage through the gap can be avoided accordingly.

[0086] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that this is only an example. The protection scope of the present invention is defined by the appended claims. Without departing from the principles and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A range hood, comprising a range hood lower chamber body and a fan system, wherein the range hood lower chamber body is provided with a smoke inlet, characterized in that: The range hood further comprises a transition connection portion, which is connected between the range hood lower chamber body and the fan system along the vertical direction; There is a transition air duct inside the transition connection portion, and the transition air duct can be connected between the lower chamber body of the range hood and the fan system.

2. The range hood according to claim 1, characterized in that: A baffle is provided inside the transition connection portion, and the baffle is located in the extension direction of the transition air duct; Wherein, the baffle can be switched between an open state and a closed state; When the baffle is in the open state, the transition air duct is in a connected state to connect the range hood lower chamber body and the fan system; When the baffle is in the closed state, the transition air duct is in a non-connected state to limit the connection between the range hood lower chamber body and the fan system.

3. The range hood according to claim 2, characterized in that: Along the flow direction of the smoke, the end of the transition duct close to the smoke exhaust fan lower chamber body is the inlet end, and the end of the transition duct close to the fan system is the outlet end; The baffle is configured as: When the pressure from the smoke on the baffle at the inlet end is greater than the gravity of the baffle, the baffle is in an open state; When the pressure from the smoke on the baffle at the inlet end is less than the gravity of the baffle, the baffle is in a closed state.

4. The range hood according to claim 3, characterized in that: The baffle comprises two plate elements arranged symmetrically, wherein the first end of any one of the plate elements is connected to the inner wall surface of the transition connection portion, and the second end is used for splicing with the other plate element; Wherein, when the baffle is in a fully opened state, the plate element is attached to the inner wall surface of the transition connection portion, and the second ends of the two plate elements are separated; When the baffle is in the closed state, the second ends of the two plate elements are engaged.

5. The range hood according to claim 3, characterized in that: The baffle is configured as: When the range hood is in a powered-on state, the baffle is in an open state; When the range hood is in a powered-off state, the baffle is in a closed state.

6. The range hood according to claim 5, characterized in that: The baffle is made of fireproof material.

7. The range hood according to claim 1, characterized in that: In the front-to-back direction, the depth of the lower cavity body of the range hood is not greater than the depth of the fan system; The front-to-back direction corresponds to the direction from the user to the range hood when the range hood is in an installed state and the user is facing the range hood.

8. The range hood according to claim 7, characterized in that: In the horizontal direction, the length of the transition connection part is 360-400 mm; in the front-to-back direction, the depth of the transition connection part is 130-150 mm, the depth of the main body of the lower cavity of the range hood is 280-300 mm, and the depth of the fan system is 300-330 mm; And / or, along the vertical direction, the sum of the heights of the fan system, the transition connection portion and the main body of the range hood lower chamber is 720-750 mm.

9. The range hood according to claim 1, characterized in that: The range hood is a top-suction range hood, and the range hood further comprises a smoke guide plate, which is detachably connected to the range hood lower chamber body and is suspended below the range hood lower chamber body.

10. The range hood according to any one of claims 1 to 9, characterized in that: Both ends of the transition connection portion in the vertical direction extend into the interior of the fan system and the main body of the lower chamber of the range hood respectively, and are attached to and sealedly connected to the corresponding inner wall surfaces of the fan system and the main body of the lower chamber of the range hood.

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