Range hood

Abstract

The utility model discloses a range hood, and relates to the technical field of range hoods, the range hood comprises a shell and a shunting structure, and an oil smoke suction channel is arranged in the shell; the flow dividing structure is arranged in the oil smoke suction channel and used for dividing the oil smoke suction channel into a left side channel and a right side channel, the flow dividing structure comprises a fixed part connected with the shell and a rotating part rotationally connected with the fixed part, the fixed part is provided with a driving structure, the driving structure drives the rotating part to rotate, and the left side channel and the right side channel are communicated through the driving structure. And the sizes of the left side channel and the right side channel are adjusted. According to the technical scheme, waste of wind power and energy can be reduced.

Description

Technical Field

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

[0002] A range hood is a kitchen appliance used to purify the kitchen environment. Usually, the range hood is installed above the cooking equipment. It can quickly extract the fumes generated during the cooking process, purify the fumes and discharge them. As an important kitchen appliance, the range hood has entered more and more households.

[0003] In order to adapt to the layout of the kitchen with two stoves on the left and right, existing range hoods are often equipped with two air inlets on the left and right to match the stoves, with one air inlet for each stove to enhance the smoke extraction effect. However, in some cooking scenarios, users only use one stove for cooking. At this time, the wind power provided by the fan is still distributed to the two air inlets, resulting in a waste of wind power and energy. Utility Model Content

[0004] The main purpose of the utility model is to provide a range hood, aiming to reduce the waste of wind power and energy.

[0005] In order to achieve the above-mentioned object, the range hood proposed by the utility model comprises:

[0006] A housing having an oil fume suction passage therein; and

[0007] A diversion structure is arranged in the oil fume suction channel, and is used to divide the oil fume suction channel into a left channel and a right channel. The diversion structure includes a fixed part connected to the shell, and a rotating part rotatably connected to the fixed part. The fixed part is provided with a driving structure, and the driving structure drives the rotating part to rotate so as to adjust the size of the left channel and the right channel.

[0008] In one embodiment, the fixing portion includes a housing, the driving structure is disposed in the housing, and an output shaft of the driving structure extends out of the housing to be connected to the rotating portion.

[0009] In one embodiment, the shell includes a front shell portion and a rear shell cover spliced ​​to each other, the front shell portion covers the driving structure, the driving structure is fixed to the rear shell cover, the rotating portion is provided with a first rotating arm extending toward the fixed portion, the first rotating arm faces the rear shell cover, and the output shaft of the driving structure extends out of the rear shell cover and is connected to the first rotating arm.

[0010] In one embodiment, the rotating part is also provided with a second rotating arm spaced apart from the first rotating arm, the second rotating arm faces the front shell part, and one of the second rotating arm and the front shell part is provided with a limiting protrusion, and the other is provided with a limiting hole, and the limiting protrusion is rotatably passed through the limiting hole.

[0011] In one embodiment, the driving structure is configured as a driving motor, and the housing is provided with a wiring hole for the connecting wires of the driving motor to pass through.

[0012] In one embodiment, the wiring hole is opened at the lower end of the fixing portion.

[0013] In one embodiment, the front shell portion is provided with a wiring gap, and the rear shell cover covers the front shell portion and encloses the wiring gap to form the wiring hole.

[0014] In one embodiment, a blocking structure is provided on the fixing portion, and the blocking structure can limit the rotation angle of the rotating portion.

[0015] In one embodiment, the rotating portion has a first rotating arm and a second rotating arm extending toward the fixed portion, the first rotating arm and the second rotating arm are respectively rotatably connected to opposite sides of the fixed portion, and the blocking structure is convexly disposed on a side of the fixed portion facing the first rotating arm and / or the second rotating arm;

[0016] The rotating portion rotates to a preset angle, and the first rotating arm and / or the second rotating arm abuts against the blocking structure.

[0017] In one embodiment, the fixing portion includes a front shell portion and a rear shell cover spliced ​​to each other, the first rotating arm faces the rear shell cover, and the blocking structure is configured as a blocking rib provided on the edge of the front shell portion facing the rear shell cover, and the blocking rib is protruding from the side of the rear shell cover away from the front shell portion.

[0018] The technical solution of the utility model is to set an oil fume suction channel in the shell, and the diversion structure is set in the oil fume suction channel, which is used to divide the oil fume suction channel into a left channel and a right channel, so as to adapt to the layout of the left and right double stoves in the kitchen. The diversion structure includes a fixed part connected to the shell, and a rotating part rotatably connected to the fixed part, and the rotating part can rotate relative to the fixed part, so as to adjust the size of the left channel and the right channel. The state of the range hood corresponding to the single stove is set as the first working state, and the state corresponding to the simultaneous operation of the two stoves is set as the second working state. In the first working state, if only the left air inlet needs to be opened, the rotating part rotates to the right, so as to increase the flow area of ​​the left channel and reduce the flow area of ​​the right channel; if only the right air inlet needs to be opened, the rotating part rotates to the left, so as to increase the flow area of ​​the right channel and reduce the flow area of ​​the left channel, so as to improve the oil fume suction rate; in the second working state, the diversion structure rotates to the point where the flow areas of the left channel and the right channel are roughly equal, so as to ensure uniform air intake. In order to facilitate the driving of the rotating part to rotate relative to the fixed part, the fixed part is provided with a driving structure, which not only improves the rotation accuracy of the rotating part, but also can realize automatic driving of the rotating part to rotate, which helps to improve the automation and intelligence of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 A schematic structural diagram of an embodiment of a range hood provided by the utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure of the middle split flow structure at an angle;

[0022] Figure 3 for Figure 1 Another structural diagram of the middle diversion structure from another angle;

[0023] Figure 4 for Figure 1 Exploded diagram of the middle split flow structure;

[0024] Figure 5 for Figure 1 Another structural schematic diagram of the middle split flow structure from another angle;

[0025] Figure 6 for Figure 1 Another structural diagram of the middle diversion structure from another angle.

[0026] Description of Figure Numbers:

[0027] 100. Range hood; 1. Casing; 11. Range hood channel; 111. Left channel; 112. Right channel; 2. Diversion structure; 21. Rotating portion; 211. First rotating arm; 212. Second rotating arm; 213. Limiting hole; 22. Fixing portion; 221. Shell; 222. Front shell; 223. Rear shell cover; 224. Limiting convex portion; 225. Wiring hole; 226. Blocking convex rib; 23. Driving structure; 231. Output shaft.

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0032] The utility model provides a range hood 100 .

[0033] See also Figures 1 to 4In one embodiment of the present invention, the range hood 100 comprises:

[0034] The housing 1 is provided with an oil fume suction passage 11; and

[0035] The diversion structure 2 is arranged in the oil fume suction channel 11, and is used to divide the oil fume suction channel 11 into a left channel 111 and a right channel 112. The diversion structure 2 includes a fixed part 22 connected to the shell 1, and a rotating part 21 rotatably connected to the fixed part 22. The fixed part 22 is provided with a driving structure 23, and the driving structure 23 drives the rotating part 21 to rotate to adjust the size of the left channel 111 and the right channel 112.

[0036] Specifically, the range hood 100 mainly includes a fume hood, a chassis, a filter, a fume suction channel 11, a fan system and other components. The fan system is arranged in the chassis. When the range hood 100 is working, the fan rotates at a high speed inside the range hood 100, so that there is a certain pressure difference inside and outside the range hood 100, so that the air outside the range hood 100 flows into the range hood 100 through the fume suction channel 11, and the fume generated when cooking food is discharged. Therefore, the smoke hood is provided with an air inlet, and a smoke suction channel 11 is provided in the shell 1 of the range hood 100. The air inlet end of the smoke suction channel 11 is connected to the air inlet, and the air outlet end is connected to the fan system. In order to adapt to the layout of the left and right double stoves in the kitchen, the range hood 100 is usually configured as a double-duct range hood 100, that is, two air inlets are provided on the air guide plate of the smoke hood, temporarily set as the left air inlet and the right air inlet. The diversion structure 2 is usually arranged on the inner side of the air guide plate and between the left air inlet and the right air inlet. The diversion structure 2 divides the smoke suction channel 11 into a left channel 111 and a right channel 112, so the diversion structure 2 is usually arranged below the fan system.

[0037] However, in some cases, the user may only operate a single stove, and only needs to open the left air inlet or the right air inlet. If the flow areas of the left channel 111 and the right channel 112 are the same, it will inevitably cause a waste of energy and wind power. Therefore, the rotating part 21 can rotate in the oil fume suction channel 11 to adjust the size of the left channel 111 and the right channel 112. Assume that the state of the range hood 100 corresponding to the single stove working is the first working state, and the state corresponding to the dual stoves working at the same time is the second working state. In the first working state, if only the left air inlet needs to be opened, the rotating part 21 rotates to the right, thereby increasing the flow area of ​​the left channel 111 and reducing the flow area of ​​the right channel 112; if only the right air inlet needs to be opened, the rotating part 21 rotates to the left, thereby increasing the flow area of ​​the right channel 112 and reducing the flow area of ​​the left channel 111, thereby improving the suction rate of oil smoke; in the second working state, the diversion structure 2 rotates to the point where the flow areas of the left channel 111 and the right channel 112 are roughly equal, thereby ensuring uniform air intake. And the range hood 100 can also have other working states, that is, the flow areas of the left channel 111 and the right channel 112 can be adjusted arbitrarily according to actual needs.

[0038] The diversion structure 2 also includes a fixed portion 22, which is mounted on the housing 1, and the rotating portion 21 is rotatably mounted on the fixed portion 22, that is, the rotating portion 21 is mounted on the housing 1 through the fixed portion 22, thereby facilitating the installation of the diversion structure 2. Preferably, the rotating portion 21 is rotatably mounted on one end of the fixed portion 22. Compared with directly mounting the rotating portion 21 on the housing 1, this solution helps to improve the installation stability of the diversion structure 2. The fixed portion 22 and the rotating portion 21 together separate the oil fume suction channel 11 into a left channel 111 and a right channel 112. In order to facilitate the driving of the rotating portion 21 to rotate relative to the fixed portion 22, the fixed portion 22 is provided with a driving structure 23, thereby not only improving the rotation accuracy of the rotating portion 21, but also realizing automatic driving of the rotating portion 21 to rotate, which helps to improve the automation and intelligence of the range hood 100.

[0039] The rotating part 21 rotates along a rotating shaft relative to the fixed part 22, and the output shaft 231 of the driving structure 23 can directly serve as the rotating shaft, that is, the driving structure 23 directly drives the rotating part 21 to rotate, or the rotating part 21 can be indirectly driven to rotate through a transmission structure, such as the output shaft 231 of the driving structure 23 is driven to the rotating shaft through gear meshing, thereby driving the rotating part 21 to move. Of course, in other embodiments, the rotating part 21 can also be driven to rotate manually.

[0040] In the embodiment of the utility model, the fixed part 22 includes a shell 221, the driving structure 23 is arranged in the shell 221, and the output shaft 231 of the driving structure 23 extends out of the shell 221 to be connected with the rotating part 21. Specifically, the driving structure 23 is arranged in the shell 221. Since the fixed part 22 and the rotating part 21 jointly separate the oil fume suction channel 11 into the left channel 111 and the right channel 112, if the driving structure 23 is arranged outside the shell 221, that is, the driving structure 23 is exposed in the oil fume suction channel 11, during the operation of the range hood 100, on the one hand, the oil fume in the oil fume suction channel 11 is very easy to adhere to the surface of the driving structure 23, which not only makes cleaning difficult, but also easily causes the driving structure 23 to malfunction, affecting the service life of the range hood 100; on the other hand, the driving structure 23 is located in the oil fume suction channel 11, which may affect the normal smoke guiding effect of the oil fume suction channel 11, affect the smoke intake, and may also cause unnecessary airflow turbulence, increasing the noise of the range hood 100 when working. In order to facilitate the connection between the driving structure 23 and the rotating part 21, the output shaft 231 of the driving structure 23 extends out of the housing 221 to connect with the rotating part 21. In other embodiments, the rotating part 21 can also extend into the fixed part 22 to connect with the output shaft 231 of the driving structure 23. In this case, the fixed part 22 is provided with an avoidance hole for the rotating part 21 to pass through and rotate. Of course, in other embodiments, the driving structure 23 can also be installed outside the housing 1.

[0041] For further information, see Figures 2 to 6 The housing 221 includes a front housing 222 and a rear housing cover 223 which are spliced ​​with each other. The front housing 222 is covered by the driving structure 23, and the driving structure 23 is fixed to the rear housing cover 223. The rotating part 21 is provided with a first rotating arm 211 extending toward the fixed part 22, and the first rotating arm 211 faces the rear housing cover 223. The output shaft 231 of the driving structure 23 extends out of the rear housing cover 223 and is connected to the first rotating arm 211. Specifically, the front housing 222, as the main body of the housing 221, is located on the side close to the air inlet, and a receiving space is provided inside the front housing 222. The rear housing cover 223 covers the receiving space, and the rear housing cover 223 is located on the side of the front housing 222 away from the air inlet, so that the splicing gap between the two is hidden between the splicing gap between the fixed part 22 and the housing 1, thereby reducing the possibility of oil smoke entering the fixed part 22 from the splicing gap between the front housing 222 and the rear housing cover 223.

[0042] In other embodiments, the housing 221 includes a first half shell and a second half shell that are spliced ​​to each other, and the driving structure 23 is fixed in an installation space formed by the first half shell and the second half shell.

[0043] The driving structure 23 is fixed to the rear shell cover 223, which is convenient for the installation of the driving structure 23 and for later maintenance. The output shaft 231 of the driving structure 23 passes through the rear shell cover 223. The rotating part 21 is provided with a first rotating arm 211 extending toward the fixed part 22. The first rotating arm 211 faces the rear shell cover 223. The output shaft 231 is connected to the first rotating arm 211, thereby driving the rotating part 21 to rotate by driving the first rotating arm 211 to rotate. In order to ensure that the driving shaft can drive the rotating part 21 to rotate, a limiting surface is provided on the outer periphery of the output shaft 231, and a limiting hole 213 is provided corresponding to the first rotating arm 211. The limiting hole 213 is sleeved on the output shaft 231. The limiting surface limits the first rotating arm 211 to rotate relative to the output shaft 231, thereby facilitating the installation of the driving shaft and the rotating part 21. Of course, in other embodiments, the mounting hole on the first rotating arm 211 is interference fit with the output shaft 231.

[0044] In order to improve the rotation stability of the rotating part 21, in the embodiment of the present utility model, please refer to Figure 2 and Figure 4 The rotating part 21 is also provided with a second rotating arm 212 spaced apart from the first rotating arm 211, the second rotating arm 212 faces the front shell part 222, and one of the second rotating arm 212 and the front shell part 222 is provided with a limiting protrusion 224, and the other is provided with a limiting hole 213, and the limiting protrusion 224 is rotatably penetrated through the limiting hole 213. Specifically, the first rotating arm 211 and the second rotating arm 212 are spaced apart so that the two can form a covering space, and the fixed part 22 is installed in the covering space, and one of the second rotating arm 212 and the front shell part 222 is provided with a limiting protrusion 224, and the other is provided with a limiting hole 213, and the limiting protrusion 224 is rotatably penetrated through the limiting hole 213, so that the rotating part 21 is rotatably connected to the opposite sides of the fixed part 22, thereby improving the rotation stability of the rotating part 21.

[0045] The second rotating arm 212 may be provided with a limiting protrusion 224 , and the front shell 222 may be provided with a limiting hole 213 ; or the front shell 222 may be provided with a limiting protrusion 224 , and the second rotating arm 212 may be provided with a limiting hole 213 .

[0046] See also Figure 5 In the embodiment of the utility model, the driving structure 23 is configured as a driving motor, and the housing 221 is provided with a wiring hole 225 for the connecting wire of the driving motor to pass through. Specifically, the driving structure 23 is configured as a driving motor, that is, the rotating part 21 is driven to rotate in the form of electric drive. At this time, the driving motor is inevitably electrically connected to an external power source through a connecting wire, so a wiring hole 225 is provided on the housing 221 to facilitate the passing of the connecting wire.

[0047] Furthermore, the wiring hole 225 is provided at the lower end of the fixing part 22. Generally speaking, the fixing part 22 is usually provided below the rotating arm, which is convenient for the installation of the diversion structure 2 on the one hand, and convenient for improving the regulating effect of the diversion structure 2 on the oil fume suction channel 11 on the other hand. Therefore, the wiring hole 225 is provided at the lower end of the fixing part 22. Compared with the wiring hole 225 provided at the lower end of the fixing part 22, the wiring hole 225 in this solution is closer to the outside of the housing 221, which is helpful for connecting the connecting wire to the external power supply. On the other hand, the connecting wire is placed on the dividing line formed by the diversion structure 2, which can minimize the influence of the connecting wire on the oil fume airflow.

[0048] In order to facilitate the insertion of the connecting wires, in the embodiment of the present utility model, please refer to Figure 5 , the front shell 222 is provided with a wiring gap, and the rear shell cover 223 covers the front shell 222 and encloses the wiring gap to form a wiring hole 225. Specifically, the wiring hole 225 is formed by the wiring gap provided in the front shell 222 and the edge of the rear shell cover 223, so that in the actual assembly process, the drive motor can be fixed on the rear shell cover 223 first, and then the front shell 222 is installed on the rear shell cover 223 while completing the threading of the connecting wire, without additionally threading the connecting wire, thereby facilitating the assembly of the drive structure 23. Of course, in other embodiments, the wiring hole 225 is opened in the front shell 222.

[0049] In order to limit the rotation angle of the rotating part 21, in the embodiment of the present utility model, please refer to Figure 3 and Figure 4 , a blocking structure is provided on the fixed part 22, and the blocking structure can limit the rotation angle of the rotating part 21. Specifically, when the rotating part 21 rotates toward the left channel 111 or the right channel 112 until the air inlet area of ​​the left channel 111 or the right channel 112 is the smallest, the position of the rotating part 21 is the maximum rotation angle of the rotating part 21. If the rotating part 21 rotates excessively, it will not only affect the regulating effect of the diversion structure 2 on the oil fume suction channel 11, but also cause unnecessary energy loss. Therefore, a blocking structure is provided, and the blocking structure can limit the rotation angle of the rotating part 21, thereby ensuring that the rotating part 21 stops after rotating to a preset angle, and improving the adjustment accuracy of the rotating part 21.

[0050] In other embodiments, an angle detection device may be provided to monitor the rotation angle of the rotating part 21, and transmit a signal to the drive motor after the rotating part 21 rotates to a preset position, thereby controlling the drive motor to stop working. Alternatively, a sensing member and a triggering member may be provided, and the triggering member rotates with the rotating part 21 or the drive shaft, and rotates to a preset position, and the triggering member triggers the sensing member, so that the sensing member transmits a signal to the drive motor, thereby controlling the drive motor to stop working.

[0051] In the embodiment of the utility model, the rotating portion 21 has a first rotating arm 211 and a second rotating arm 212 extending toward the fixed portion 22, the first rotating arm 211 and the second rotating arm 212 are respectively rotatably connected to opposite sides of the fixed portion 22, and the blocking structure is convexly disposed on one side of the fixed portion 22 facing the first rotating arm 211 and / or the second rotating arm 212;

[0052] The rotating portion 21 rotates to a preset angle, and the first rotating arm 211 and / or the second rotating arm 212 abuts against the blocking structure.

[0053] Specifically, when the rotating part 21 rotates to a preset angle, the first rotating arm 211 and / or the second rotating arm 212 abut against the blocking structure, thereby limiting the rotation angle of the rotating part 21, that is, the blocking structure can be configured as a blocking convex portion provided on the fixed part 22, which helps to simplify the blocking structure. Moreover, the blocking convex portion can be integrally formed with the fixed part 22, thereby facilitating the installation of the blocking structure and ensuring the stability of the limit.

[0054] Preferably, the blocking structure is protruded from a side of the fixing portion 22 facing the first rotating arm 211 ; in another embodiment, the blocking structure is protruded from a side of the fixing portion 22 facing the second rotating arm 212 .

[0055] To further facilitate the installation of the blocking structure, in the embodiment of the utility model, the fixed part 22 includes a front shell part 222 and a rear shell cover 223 spliced ​​together, the first rotating arm 211 faces the rear shell cover 223, and the blocking structure is configured as a blocking rib 226 provided on the edge of the front shell part 222 facing the rear shell cover 223, and the blocking rib 226 is convexly provided on the side of the rear shell cover 223 away from the front shell part 222. Specifically, the blocking structure is configured as a blocking rib 226 provided on the edge of the front shell part 222 facing the rear shell cover 223, that is, the blocking rib 226 is integrally formed with the front shell part 222, so that the installation of the blocking structure is convenient and the limit stability can be ensured. The blocking rib 226 is convexly provided on the side of the rear shell cover 223 away from the front shell part 222, so that the blocking rib 226 and the rear shell cover 223 jointly form a limit step, thereby blocking the rotation of the rotating part 21.

[0056] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A range hood, characterized in that: include: The outer shell is provided with an oil fume suction passage; as well as A diversion structure is arranged in the oil fume suction channel, and is used to divide the oil fume suction channel into a left channel and a right channel. The diversion structure includes a fixed part connected to the shell, and a rotating part rotatably connected to the fixed part. The fixed part is provided with a driving structure, and the driving structure drives the rotating part to rotate so as to adjust the size of the left channel and the right channel.

2. The range hood according to claim 1, characterized in that: The fixing part comprises a shell, the driving structure is arranged in the shell, and the output shaft of the driving structure extends out of the shell to be connected with the rotating part.

3. The range hood according to claim 2, characterized in that: The shell includes a front shell part and a rear shell cover spliced ​​to each other, the front shell part covers the driving structure, the driving structure is fixed to the rear shell cover, the rotating part is provided with a first rotating arm extending toward the fixed part, the first rotating arm faces the rear shell cover, and the output shaft of the driving structure extends out of the rear shell cover and is connected to the first rotating arm.

4. The range hood according to claim 3, characterized in that: The rotating part is also provided with a second rotating arm spaced apart from the first rotating arm, the second rotating arm faces the front shell part, and one of the second rotating arm and the front shell part is provided with a limiting protrusion, and the other is provided with a limiting hole, and the limiting protrusion is rotatably passed through the limiting hole.

5. The range hood according to claim 3, characterized in that: The driving structure is configured as a driving motor, and the housing is provided with a wiring hole for the connecting wires of the driving motor to pass through.

6. The range hood according to claim 5, characterized in that: The wiring hole is opened at the lower end of the fixing part.

7. The range hood according to claim 5, characterized in that: The front shell portion is provided with a wiring gap, and the rear shell cover covers the front shell portion and is enclosed with the wiring gap to form the wiring hole.

8. The range hood according to claim 1, characterized in that: The fixing part is provided with a blocking structure, and the blocking structure can limit the rotation angle of the rotating part.

9. The range hood according to claim 8, characterized in that: The rotating part has a first rotating arm and a second rotating arm extending toward the fixed part, the first rotating arm and the second rotating arm are respectively rotatably connected to opposite sides of the fixed part, and the blocking structure is convexly arranged on a side of the fixed part facing the first rotating arm and / or the second rotating arm; The rotating portion rotates to a preset angle, and the first rotating arm and / or the second rotating arm abuts against the blocking structure.

10. The range hood according to claim 9, characterized in that: The fixing portion includes a front shell portion and a rear shell cover spliced ​​to each other, the first rotating arm faces the rear shell cover, the blocking structure is configured as a blocking rib arranged on the edge of the front shell portion facing the rear shell cover, and the blocking rib is convexly arranged on the side of the rear shell cover away from the front shell portion.

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