Range hood

Abstract

The utility model discloses a range hood which comprises a shell assembly and a smoke gathering mechanism, the shell assembly is provided with a smoke inlet cavity and an air inlet, the smoke gathering mechanism comprises a turning plate assembly and two smoke gathering assemblies, the turning plate assembly is arranged outside the shell assembly, rotationally connected with the shell assembly and used for opening or closing the air inlet, and the two smoke gathering assemblies are arranged on the turning plate assembly. The smoke gathering assemblies are arranged on the left side and the right side of the air inlet respectively, the fixed ends of the smoke gathering assemblies are rotationally connected with the left end and the right end of the turning plate assembly respectively, the free ends of the smoke gathering assemblies movably penetrate through the air inlet and stretch into the smoke inlet cavity respectively, and each smoke gathering assembly can be folded or unfolded relative to the turning plate assembly. According to the range hood disclosed by the utility model, the smoke gathering effect can be effectively improved, and the problems of space occupation and attractiveness of a smoke gathering plate of a traditional range hood are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to a range hood with a smoke collecting mechanism. Background Art

[0002] In existing range hoods with smoke trapping mechanisms, opening the smoke trapping mechanism is crucial to forming a smoke trapping area and preventing the spread of oil smoke. However, when the range hood is not working, the smoke trapping mechanism not only occupies valuable smoke inlet cavity space, but may also affect the overall size of the range hood. Summary of the invention

[0003] The present invention aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the present invention proposes a range hood that can not only effectively improve the smoke collection effect, but also effectively solve the problem of space occupation and aesthetics of the smoke collection plate of the traditional range hood.

[0004] According to the range hood provided above, it is implemented through the following technical solutions:

[0005] 8. The smoke collecting mechanism as claimed in claim 7, wherein the two smoke collecting assemblies are arranged on the outside of the housing and are rotatably connected to the housing assembly for opening or closing the air inlet, and two smoke collecting assemblies are respectively arranged on the left and right sides of the air inlet and the fixed ends thereof are respectively rotatably connected to the left and right ends of the flap assembly, and the free ends are respectively movably passed through the air inlet and extended into the smoke inlet chamber. Each of the smoke collecting assemblies can be folded or unfolded relative to the flap assembly; when the flap assembly is closed, the two smoke collecting assemblies move close to each other and are rotated and folded to be close to the back side of the flap assembly; when the flap assembly is opened, the two smoke collecting assemblies move away from each other and are rotated and unfolded to abut against the air inlet or the opposite side walls of the smoke inlet chamber, so that the flap assembly and the two smoke collecting assemblies enclose a smoke collecting area.

[0006] In some embodiments, the smoke collecting assembly includes a smoke collecting plate and a power component, the fixed end of the smoke collecting plate is rotatably connected to the left end or the right end of the flap assembly, and the free end can movably pass through the air inlet and extend into the smoke inlet chamber, and the smoke collecting plate can be folded or unfolded relative to the flap assembly; the power component is connected to the smoke collecting plate, and is at least used to make the smoke collecting plate automatically unfold when the flap assembly is opened.

[0007] In some embodiments, the power component includes a driving motor, the output end of which is connected to the free end of the cigarette collecting plate, for driving the cigarette collecting plate to unfold or fold; or the power component includes at least one elastic member, which is arranged between the fixed end of the cigarette collecting plate and the flap assembly, for ensuring that the cigarette collecting plate is always in a tendency to automatically unfold.

[0008] In some embodiments, a connecting shaft is provided between the fixed end of the smoke collecting plate and the flap assembly, and a plurality of elastic members arranged at intervals are sleeved outside the connecting shaft, and two legs of the elastic members are respectively abutted against the inner surface of the smoke collecting plate and the back surface of the flap assembly.

[0009] In some embodiments, the smoke collecting assembly further comprises a connecting plate, wherein the connecting plate is fixedly connected to the flap assembly, and a fixed end of the smoke collecting plate is rotatably connected to the flap assembly via the connecting plate.

[0010] In some embodiments, a connecting shaft is provided between the fixed end of the smoke collecting plate and the connecting plate, and a plurality of elastic members arranged at intervals are sleeved outside the connecting shaft, and two legs of the elastic members are respectively abutted against the inner surface of the smoke collecting plate and the inner surface of the connecting plate or the back side of the flap assembly.

[0011] In some embodiments, the smoke collecting mechanism further includes a guide member, and guide members arranged corresponding to the smoke collecting components are respectively provided at the left and right ends of the smoke inlet chamber, and the two guide members are respectively slidably matched with the two smoke collecting components, and the smoke collecting components can be folded or unfolded along the guide members under the guidance of the guide members.

[0012] In some embodiments, the guide member includes a rear guide section and a front guide section fixedly connected to each other in an "L" shape, the rear guide section is connected to the rear cavity wall of the smoke inlet cavity, the free end of the front guide section extends forward to the side wall of the air inlet, and an arc-shaped guide surface facing the smoke collecting assembly is provided between the rear guide section and the front guide section.

[0013] In some embodiments, the flap assembly includes a panel and an inner cover plate, the inner cover plate is fixedly mounted on the back of the panel, and its upper end is rotatably connected to the outer shell assembly; the fixed ends of the two smoke collecting assemblies are respectively rotatably connected to the left and right ends of the inner cover plate.

[0014] In some embodiments, a driving mechanism is further included, which is arranged in the smoke inlet chamber. The output end of the driving mechanism can movably pass through the air inlet and is connected to the middle part of the back side of the flap assembly to drive the flap assembly to open or close the air inlet.

[0015] In some embodiments, the driving mechanism includes a flap driver, a transmission assembly and a mounting plate, the flap driver is detachably mounted in the smoke inlet chamber via the mounting plate, and the output end of the flap driver is connected to the middle of the back side of the flap assembly via the transmission assembly.

[0016] In some embodiments, the driving mechanism also includes a protective cover, which is detachably installed in the smoke inlet chamber and is arranged outside the flap driver and the mounting plate. The protective cover divides the interior of the smoke inlet chamber into two left and right parts. A through hole is opened on the front side of the protective cover for the transmission assembly to move through, and the front end of the mounting plate is abutted or connected to the protective cover.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] 1. The utility model relates to a range hood, wherein two smoke collecting components are arranged on the left and right sides of the air inlet and are rotatably connected to the left and right ends of the flap component respectively, and each of the smoke collecting components can be folded or unfolded relative to the flap component. On the one hand, the two smoke collecting components and the flap component cooperate to form a smoke collecting area, which effectively improves the smoke collecting efficiency, helps to more thoroughly capture and prevent the diffusion of oil smoke, improves the air quality in the kitchen, and effectively solves the oil smoke diffusion problem faced by the range hood with an ultra-thin smoke inlet chamber. On the other hand, the smoke collecting component and the flap component are folded and retracted when closed, which significantly reduces the occupation of the smoke inlet chamber space of the range hood, makes the range hood design more compact, improves the aesthetics of the whole machine, and effectively solves the problem of space occupation and aesthetics of the smoke collecting plate of the traditional range hood.

[0019] 2. By arranging two guide members in the outer shell assembly to cooperate with the two smoke-collecting assemblies respectively, not only the movement of the smoke-collecting assemblies is supported, but also the stability, reliability and smoothness of the opening and closing of the entire smoke-collecting mechanism are ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the range hood in the embodiment of the utility model in an open state;

[0021] Figure 2 is a cross-sectional view of the range hood in the embodiment of the utility model in an open state;

[0022] Figure 3 is a cross-sectional view of the range hood in the embodiment of the utility model in a closed state;

[0023] Figure 4 It is a schematic structural diagram of the range hood in the embodiment of the utility model in a closed state, in which the back plate of the housing assembly and the flap driver of the driving mechanism are hidden;

[0024] Figure 5This is a schematic diagram of the structure of the smoke-collecting mechanism in the embodiment of the utility model;

[0025] Figure 6 This is a cross-sectional view of the smoke collecting mechanism in the embodiment of the utility model with the guide member hidden;

[0026] Figure 7 It is a structural schematic diagram of the flap assembly in the embodiment of the utility model;

[0027] Figure 8 It is an exploded view of the flap assembly in the embodiment of the utility model;

[0028] Fig. 9 It is a structural schematic diagram of a guide member in an embodiment of the utility model.

[0029] In the figure: 1-shell assembly, 11-smoke inlet chamber, 12-air inlet, 13-smoke outlet; 2-flap assembly, 20-sealed chamber, 21-panel, 22-inner cover plate, 220-partition rib, 221-opening, 222-protrusion, 223-recess; 3-smoke collecting assembly, 31-smoke collecting plate, 32-elastic member, 33-connecting shaft, 34-connecting plate; 4-guide member, 401-arc guide surface, 402-inclined surface, 41-rear guide section, 42-front guide section; 5-driving mechanism, 51-flap driver, 52-transmission assembly, 53-mounting plate, 54-fixed bracket, 55-protective cover, 551-through hole; 6-connecting arm. DETAILED DESCRIPTION

[0030] The following examples illustrate the present invention, but the present invention is not limited by these examples. Modifications to the specific implementation of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed for protection in the present invention.

[0031] refer to Figure 1-6The present embodiment provides a range hood, which is an ultra-thin range hood, and includes a housing assembly 1 and a smoke collection mechanism (not shown in the figure). A smoke inlet chamber 11 is provided inside the housing assembly 1, an air inlet 12 connected to the smoke inlet chamber 11 is provided on the front of the housing assembly 1, and a smoke outlet 12 connected to the smoke inlet chamber 11 is provided on the top of the housing assembly 1. The smoke collection mechanism includes a flap assembly 2 and two smoke collection assemblies 3, wherein the flap assembly 2 is arranged outside the housing assembly 1 and is rotatably connected to the upper front end or top of the housing assembly 1. In the present embodiment, the flap assembly 2 is rotatably connected to the housing assembly 1 through two connecting arms 6, which are used to open or close the air inlet 12. The two smoke collecting components 3 are respectively arranged on the left and right sides of the air inlet 12 and are located behind the flap assembly 2. The fixed ends of the two smoke collecting components 3 are rotatably connected to the left and right ends of the flap assembly 2, and the free ends can movably pass through the air inlet 12 and extend into the smoke inlet chamber 11. In the present embodiment, each smoke collecting component 3 can be folded or unfolded relative to the flap assembly 2.

[0032] When the flap assembly 2 is closed, the two smoke collecting components 3 move closer to each other and rotate and fold to the back of the flap assembly 2, so that the two smoke collecting components 3 are folded and stored, and cleverly stored in the smoke inlet chamber 11 and hidden on the back of the flap assembly 2, reducing the occupation of the smoke collecting components 3 in the smoke inlet chamber space of the range hood, making the structure more compact when the range hood is not in use, improving the aesthetics of the whole machine, and effectively solving the problem of the space occupied and aesthetics of the smoke collecting plate of the traditional range hood. On the contrary, when the flap assembly 2 is opened, the two smoke collecting components 3 move away from each other and rotate and unfold to abut the air inlet 12 or the opposite side walls of the smoke inlet chamber 11, so that the flap assembly 2 and the two smoke collecting components 3 are enclosed to form a smoke collecting area, effectively improving the smoke collecting efficiency, helping to more thoroughly capture and prevent the spread of oil smoke, improving the kitchen air quality, and effectively solving the oil smoke diffusion problem faced by the ultra-thin smoke inlet chamber range hood.

[0033] refer to Figure 1-8 The flap assembly 2 includes a panel 21 and an inner cover plate 22. The panel 21 is arranged on the front side of the outer shell assembly 1 and is made of glass. Of course, it can also be made of metal or plastic. The inner cover plate 22 is fixedly mounted on the back of the panel 21 by bonding, and its upper end is rotatably connected to the outer shell assembly 1. In this embodiment, the panel 21 is used to open or close the entire air inlet 12, and the inner cover plate 22 can pass through the air inlet 12 and extend into the smoke inlet chamber 11 when the flap assembly 2 is closed, so as to reduce the width of the smoke machine in the front and rear directions when the smoke machine is closed. The inner cover plate 22 passes through the air inlet 12 and extends out of the outer shell assembly 1 when the flap assembly 2 is opened. The fixed ends of the two smoke collecting assemblies 3 are rotatably connected to the left and right ends of the inner cover plate 22 respectively. When the flap assembly 2 is closed, the two smoke collecting assemblies 3 can be rotated and folded relative to the flap assembly 2 to be close to the back of the inner cover plate 22.

[0034] Specifically, a sealed cavity 20 is formed between the panel 21 and the inner cover plate 22, and a switch assembly or a display panel assembly that is attached to the back of the panel 21 is disposed in the sealed cavity 20. Figure 8 A partition rib 220 is provided in the inner cover plate 22. The provision of the partition rib 220 can, on the one hand, improve the overall strength of the inner cover plate 22, on the other hand, divide the sealed cavity 220 into a plurality of cavities, and on the third hand, facilitate strengthening the stability and reliability of the connection between the inner cover plate 22 and the panel 21.

[0035] Specifically, the inner cover plate 22 is rotatably connected to the outer shell assembly 1 through two connecting arms 6. In this embodiment, openings 221 for the connecting arms 6 to pass through are respectively provided at the left and right ends of the top of the inner cover plate 22, and the openings 221 are connected to the inside of the sealed cavity 20. Figure 1-7 During installation, the lower ends of the two connecting arms 6 respectively pass through the two openings 221 to extend into the sealed cavity 20 and are connected to the inner cover plate 22, and the upper ends of the two connecting arms 6 pass through the air inlet 12 from the outside to the inside and are connected to the front upper end or top of the outer shell assembly 1, so that the two connecting arms 6 respectively cooperate with the inner cover plate 22 and the outer shell assembly 1, so that the flap assembly 2 can be stably and reliably rotated and connected to the outer shell assembly 1.

[0036] refer to Figure 5-7 The left and right ends of the inner cover plate 22 are respectively provided with outwardly extending protrusions 222, and the two protrusions 222 are respectively used to connect the two smoke collecting components 3. In addition, a recessed portion 223 is recessed toward the panel 21 in the middle of the back of the inner cover plate 22, and the recessed portion 223 is used to fix the fixing bracket 54 in the driving mechanism 5.

[0037] refer to Figure 1-6 The smoke collecting assembly 3 includes a smoke collecting plate 31 and a power component (not shown in the figure), the fixed end of the smoke collecting plate 31 is rotatably connected to the left end or the right end of the inner cover plate 22 of the flap assembly 2, the free end of the smoke collecting plate 31 can movably pass through the air inlet 12 and extend into the smoke inlet chamber 11, and the smoke collecting plate 31 is folded or unfolded relative to the flap assembly 2. The power component is connected to the smoke collecting plate 31, at least for automatically unfolding the smoke collecting plate 31 when the flap assembly 2 is opened, so that the smoke collecting plate 31 rotates and unfolds to abut the side wall surface of the air inlet 12 or the smoke inlet chamber 11 when the flap assembly 2 is opened. Of course, the power component can also be configured to automatically fold the smoke collecting plate 31 when the flap assembly 2 is closed, so that the smoke collecting plate 31 rotates and folds to the back of the inner cover plate 22 close to the flap assembly 2 when the flap assembly 2 is closed.

[0038] In this embodiment, the specific structure of the power component includes but is not limited to any of the following:

[0039] The first type is that the power component includes a driving motor, the output end of which is directly connected to the free end of the smoke collecting plate 31, and is used to drive the smoke collecting plate 31 to unfold or fold. Specifically, the driving motor is used to drive the smoke collecting plate 31 to unfold at the same time or after the flap assembly 2 is opened, so that the smoke collecting plate 31 rotates and unfolds to abut the side wall of the air inlet 12 or the smoke inlet chamber 11, and then the smoke collecting plate 31 and the flap assembly 2 are enclosed to form a smoke collecting area, thereby improving the smoke collecting effect of the range hood and reducing the escape of oil smoke; the driving motor is also used to drive the smoke collecting plate 31 to fold at the same time or before the flap assembly 2 is closed, so that the smoke collecting plate 31 rotates and folds to the back of the inner cover plate 22 close to the flap assembly 2, and is cleverly folded and retracted in the smoke inlet chamber. It is particularly noted that the smoke collecting plate 31 can be unfolded into place later than or synchronously with the flap assembly 2 fully opening the air inlet, and the smoke collecting plate 31 can be folded into place earlier than the flap assembly 2 fully closing the air inlet.

[0040] The second type is that the power component includes a driving motor and a transmission rod. The output end of the driving motor is connected to the free end of the cigarette collecting plate 31 through the transmission rod. At this time, the output end of the driving motor is indirectly connected to the cigarette collecting plate 31, and the driving motor can push the cigarette collecting plate 31 to unfold or fold through the transmission rod.

[0041] The third one, reference Figure 2-6 The power component includes at least one elastic member 32, which is preferably a torsion spring, disposed between the fixed end of the smoke collecting plate 31 and the back of the inner cover plate 22 of the flap assembly 2, and is used to keep the smoke collecting plate 31 in a tendency to automatically expand. Specifically, when the flap assembly 2 is opened, the smoke collecting plate 31 is automatically expanded under the action of at least one elastic member 32 to form an effective smoke collecting area; on the contrary, when the flap assembly 2 is closed, the smoke collecting plate is folded to be cleverly stored in the ultra-thin smoke inlet chamber 11. At this time, at least one elastic member 32 is compressed by the smoke collecting plate 31 and begins to accumulate force, so that the smoke collecting plate 31 can be automatically expanded when the flap assembly 2 is opened again.

[0042] refer to Figure 2-6 In this embodiment, the smoke collecting assembly 3 further includes a connecting shaft 33 and a connecting plate 34. The connecting plate 34 is fixedly connected to the flap assembly 2. Specifically, the connecting plate 34 is arranged outside the left side or right side of the inner cover plate 22 of the flap assembly 2 and is fixedly connected to the protrusion 222 of the inner cover plate 22. The fixed end of the smoke collecting plate 31 is rotatably connected to the inner cover plate 22 of the flap assembly 2 through the connecting plate 34. A connecting shaft 33 is provided between the fixed end of the smoke collecting plate 31 and the connecting plate 34. A plurality of elastic members 32 arranged at intervals are sleeved outside the connecting shaft 33. The two legs of each elastic member 32 are respectively abutted against the inner surface of the smoke collecting plate 31 and the inner surface of the connecting plate 34 or the back of the inner cover plate 22 of the flap assembly 2. In particular, the inner surface of the smoke collecting plate 31 and the inner surface of the connecting plate 34 specifically refer to the side of the smoke collecting plate 31 and the connecting plate 34 facing the inner cover plate 22.

[0043] In other embodiments, the connecting plate can be omitted. In this case, the connecting shaft 33 is arranged between the fixed end of the smoke collecting plate 31 and the inner cover plate 22 of the flap assembly 2, and a plurality of elastic members 32 arranged at intervals are mounted outside the connecting shaft 33. The two feet of each elastic member 32 are respectively abutted against the inner surface of the smoke collecting plate 31 and the back side of the inner cover plate 22 of the flap assembly 2.

[0044] refer to Figure 1-5 and Fig. 9 , the smoke-collecting mechanism also includes an "L"-shaped guide member 4, and guide members 4 arranged corresponding to the smoke-collecting assembly 3 are respectively provided at the left and right ends of the smoke-inlet chamber 11, and the two guide members 4 are respectively slidably matched with the smoke-collecting plates 31 of the two smoke-collecting assemblies 3, and the two guide members 4 are respectively used to guide the smoke-collecting plates 31 of the two smoke-collecting assemblies 3 to automatically fold when the flap assembly 2 is closed. During the opening and closing process of the flap assembly 2, the smoke-collecting plates 31 of the smoke-collecting assembly 3 can be folded or unfolded along the guide member 4 under the guidance of the guide member 4. Thus, through the cooperation of the two guide members and the power component, the smoke-collecting plate 31 can be folded and stored at 90° along the guide member 4, and then cleverly stored in the smoke-inlet chamber, or unfolded at 90° along the guide member 4, and enclosed with the flap assembly to form an efficient smoke-collecting area. It can be seen that by adding the guide member 4, not only the movement of the smoke-collecting assembly 3 is supported, but also the stability, reliability and smoothness of movement of the opening and closing of the entire smoke-collecting mechanism are ensured.

[0045] The guide member 4 includes a rear guide section 41 and a front guide section 42 fixedly connected to form an "L" shape. The rear guide section 41 is connected to the rear cavity wall of the smoke inlet cavity 11. The free end of the front guide section 42 extends forward to the air inlet 12 and abuts or connects with the side wall of the air inlet 12. An arcuate guide surface 401 facing the smoke collecting assembly 3 is provided between the rear guide section 41 and the front guide section 42. The smoke collecting plate in the smoke collecting assembly 3 can be folded, stored or unfolded at 90 degrees along the arcuate guide surface 401. In this embodiment, the arcuate guide surface 401 extends to the free end of the rear guide section 41, and an inclined surface 402 connected to the arcuate guide surface 401 is provided at the free end of the rear guide section 41 to facilitate guiding the smoke collecting plate to pass through.

[0046] refer to Figure 1-5 , further, it also includes a driving mechanism 5, which is arranged in the smoke inlet chamber 11, and the output end of the driving mechanism 5 can movably pass through the air inlet 12 and is connected to the middle of the back of the flap assembly 2, which is used to drive the flap assembly 2 to open or close the air inlet 12. In this way, only one driving mechanism 5 is needed to realize the driving of the flap assembly 2 to open or close smoothly, and prevent the flap assembly 2 from being unevenly stressed on the left and right sides and not closed tightly. In this embodiment, the output end of the driving mechanism 5 is connected to the middle of the back of the inner cover plate 22, and the driving mechanism 5 divides the inside of the smoke inlet chamber 11 into left and right parts, so as to realize the partitioning of the smoke inlet chamber 11.

[0047] The driving mechanism 5 includes a flap driver 51, a transmission assembly 52 and a mounting plate 53. The mounting plate 53 is vertically arranged in the smoke inlet chamber 11 and abuts or is connected to the back of the smoke inlet chamber 11. The upper and lower ends of the mounting plate 53 are respectively connected or abutted to the bottom and the top of the smoke inlet chamber 11. The flap driver 51 is detachably mounted in the smoke inlet chamber 11 through the mounting plate 53. The output end of the flap driver 51 is connected to the middle of the back of the flap assembly 2 through the transmission assembly 52. ​​In this embodiment, the transmission assembly 52 is a connecting rod, one end of which is connected to the output end of the flap driver 51, and the other end is connected to the middle of the back of the inner cover plate 22 of the flap assembly 2 through a fixed bracket 54.

[0048] The driving mechanism 5 further includes a protective cover 55, which is detachably mounted in the smoke inlet chamber 11 and is disposed outside the flap driver 51 and the mounting plate 53. The protective cover 55 divides the interior of the smoke inlet chamber 11 into two parts, a left part and a right part. A through hole 551 is provided on the front of the protective cover 55 for the transmission assembly 52 to move through, so that the protective cover 55 can protect the driving mechanism 5 and partition the smoke inlet chamber. In this embodiment, the back of the protective cover 55 abuts against the back of the smoke inlet chamber 11, the upper and lower ends of the protective cover 55 are respectively connected to the bottom and the top of the smoke inlet chamber 11, and the front end of the mounting plate 53 abuts against or is connected to the protective cover 55.

[0049] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A range hood, comprising a housing assembly (1) and a smoke collecting mechanism, wherein the housing assembly (1) is provided with a smoke inlet chamber (11) and an air inlet (12), and is characterized in that: The smoke-collecting mechanism comprises: A flap assembly (2) is arranged outside the housing assembly (1) and is rotatably connected to the housing assembly (1), and is used to open or close the air inlet (12). Two smoke-collecting components (3) are respectively arranged on the left and right sides of the air inlet (12), and the fixed ends thereof are rotatably connected to the left and right ends of the flap component (2), and the free ends thereof can movably pass through the air inlet (12) and extend into the smoke inlet chamber (11), and each of the smoke-collecting components (3) can be folded or unfolded relative to the flap component (2); When the flap assembly (2) is closed, the two smoke collecting assemblies (3) move towards each other and rotate and fold to be close to the back of the flap assembly (2); when the flap assembly (2) is opened, the two smoke collecting assemblies (3) move away from each other and rotate and unfold to abut against the opposite side walls of the air inlet (12) or the smoke inlet chamber (11), so that the flap assembly (2) and the two smoke collecting assemblies (3) are enclosed to form a smoke collecting area.

2. A range hood according to claim 1, characterized in that: The smoke collecting assembly (3) comprises a smoke collecting plate (31) and a power component; the fixed end of the smoke collecting plate (31) is rotatably connected to the left end or the right end of the flap assembly (2); the free end can movably pass through the air inlet (12) and extend into the smoke inlet chamber (11); the smoke collecting plate (31) can be folded or unfolded relative to the flap assembly (2); the power component is connected to the smoke collecting plate (31) and is at least used to automatically unfold the smoke collecting plate (31) when the flap assembly (2) is opened.

3. A range hood according to claim 2, characterized in that: The power component comprises a driving motor, the output end of the driving motor is connected to the free end of the cigarette collecting plate (31), and is used to drive the cigarette collecting plate (31) to unfold or fold; or The power component comprises at least one elastic member (32), wherein the elastic member (32) is arranged between a fixed end of the smoke collecting plate (31) and the flap assembly (2), and is used to ensure that the smoke collecting plate (31) is always in a tendency to automatically expand.

4. The range hood according to claim 3, characterized in that: A connecting shaft (33) is provided between the fixed end of the smoke collecting plate (31) and the flap assembly (2), and a plurality of elastic members (32) are sleeved outside the connecting shaft (33) and arranged at intervals, and two legs of the elastic members (32) are respectively in contact with the inner surface of the smoke collecting plate (31) and the back surface of the flap assembly (2).

5. The range hood according to claim 3, characterized in that: The smoke collecting assembly (3) further comprises a connecting plate (34), wherein the connecting plate (34) is fixedly connected to the flap assembly (2), and the fixed end of the smoke collecting plate (31) is rotatably connected to the flap assembly (2) via the connecting plate (34).

6. The range hood according to claim 5, characterized in that: A connecting shaft (33) is provided between the fixed end of the smoke collecting plate (31) and the connecting plate (34), and a plurality of elastic members (32) are sleeved outside the connecting shaft (33) and arranged at intervals, and two legs of the elastic members (32) are respectively in contact with the inner surface of the smoke collecting plate (31) and the inner surface of the connecting plate (34) or the back surface of the flap assembly (2).

7. A range hood according to any one of claims 1 to 6, characterized in that: The smoke collecting mechanism further comprises a guide member (4), wherein guide members (4) arranged corresponding to the smoke collecting components (3) are respectively provided at the left and right ends of the smoke inlet chamber (11), and the two guide members (4) are respectively slidably matched with the two smoke collecting components (3), and the smoke collecting components (3) can be folded or unfolded along the guide members (4) under the guidance of the guide members (4).

8. The range hood according to claim 7, characterized in that: The guide member (4) comprises a rear guide section (41) and a front guide section (42) which are fixedly connected to form an "L" shape, the rear guide section (41) being connected to the rear cavity wall surface of the smoke inlet cavity (11), the free end of the front guide section (42) extending forward to the side wall surface of the air inlet (12), and an arc-shaped guide surface (401) facing the smoke collection assembly (3) is provided between the rear guide section (41) and the front guide section (42).

9. The range hood according to claim 1, characterized in that: The flap assembly (2) comprises a panel (21) and an inner cover plate (22); the inner cover plate (22) is fixedly mounted on the back of the panel (21), and its upper end is rotatably connected to the outer shell assembly (1); the fixed ends of the two smoke collecting assemblies (3) are rotatably connected to the left and right ends of the inner cover plate (22), respectively.

10. The range hood according to claim 1, characterized in that: It also includes a driving mechanism (5), which is arranged in the smoke inlet chamber (11), and the output end of the driving mechanism (5) can movably pass through the air inlet (12) and is connected to the middle part of the back side of the flap assembly (2), so as to drive the flap assembly (2) to open or close the air inlet (12).

11. The range hood according to claim 10, characterized in that: The driving mechanism (5) comprises a flap driver (51), a transmission assembly (52) and a mounting plate (53); the flap driver (51) is detachably mounted in the smoke inlet chamber (11) via the mounting plate (53); and the output end of the flap driver (51) is connected to the middle of the back side of the flap assembly (2) via the transmission assembly (52).

12. The range hood according to claim 11, characterized in that: The driving mechanism (5) further comprises a protective cover (55), which is detachably mounted in the smoke inlet chamber (11) and is arranged outside the flap driver (51) and the mounting plate (53); the protective cover (55) divides the interior of the smoke inlet chamber (11) into two left and right parts; a through hole (551) for the transmission assembly (52) to move through is provided on the front of the protective cover (55); and the front end of the mounting plate (53) is in contact with or connected to the protective cover (55).

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