CN215570715U - Fume exhaust fan - Google Patents

Abstract

The utility model discloses a range hood, which comprises a fan frame, a box body and an electrical appliance module, wherein the box body can lift relative to the fan frame, part of the electrical appliance module is arranged on the fan frame and part of the electrical appliance module is arranged on the box body, the electrical appliance module part on the fan frame and the electrical appliance module part on the box body are electrically connected through a first lead, and the range hood is characterized in that: the box parcel is in the periphery of fan frame, first wire gets into in the box along the top and the lateral surface of fan frame, first wire swings along the lift of box. Compared with the prior art, the utility model has the advantages that: a connecting wire for connecting the electrical apparatus module between fan frame and the box that goes up and down gets into the box from fan frame top along fan frame lateral surface, can adopt shorter wire to realize the electricity and connect, and the swing of connecting wire takes place in the gap between fan frame and the box, and the restriction connecting wire is the two-dimensional swing of fan frame side, avoids being cut at the in-process wire that goes up and down.

Description

Fume exhaust fan

Technical Field

The utility model relates to an oil fume purification device, in particular to a range hood.

Background

The range hood has become one of the indispensable kitchen household electrical appliances in modern families. The range hood works by utilizing the fluid dynamics principle, sucks and exhausts oil smoke through a centrifugal fan arranged in the range hood, and filters partial grease particles by using a filter screen. The centrifugal fan comprises a volute, an impeller arranged in the volute and a motor driving the impeller to rotate. When the impeller rotates, negative pressure suction is generated in the center of the fan, oil smoke below the range hood is sucked into the fan, accelerated by the fan and then collected and guided by the volute to be discharged out of a room.

In order to adjust the height of the negative pressure area, a lifting range hood is commonly adopted at present. For the lifting type range hood, when the electrical appliance modules are distributed on the upper box body and the lower box body, the upper box body and the lower box body need to be connected by electrical appliance connecting wires for realizing communication and power supply. Space constraints, connection reliability, cost and impact on appearance need to be considered simultaneously.

In the conventional range hood, the wiring manner of the wires thereof, such as the range hood disclosed in chinese patent with application number 201921022685.4, includes: the power supply device comprises a machine body, a power supply device and a control device, wherein the machine body is provided with the power supply device; the smoke collecting cover is arranged on the machine body in a lifting manner, and an electric appliance element is arranged on the smoke collecting cover; the protection mechanism is flexible and is internally provided with a channel, one end of the protection mechanism is fixedly connected with the smoke collecting hood, and the other end of the protection mechanism is fixedly connected with the machine body; and the connecting wire is arranged in the channel in a penetrating manner, one end of the connecting wire is connected with the electrical element, and the other end of the connecting wire is connected with the power supply equipment. Also like the hidden range hood of collection petticoat pipe that chinese patent application with application number 201810636257.4 discloses arranged under two wind channel oil smoke, including the bellows that has the exhaust pipe and set up the collection petticoat pipe in the bellows, collection petticoat pipe is connected with actuating mechanism and is the setting in the bellows that is liftable, and the end of drawing forth of connecting wire is worn out and is connected with the control box from the swing arm, goes up and down to collect the petticoat pipe and can make the connecting wire follow the swing arm and take place the swing.

Among the above-mentioned prior art, the starting point of wire is all inside the box, does not expose the problem, only need when going up and down through the simple swing of wire can. The two box bodies are directly connected from the inside through the swing scheme, so that the problems that the wires are too long, the box bodies cut the wires and the like can be caused.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a range hood aiming at the defects of the prior art, which can realize electric connection by adopting shorter wires and simultaneously avoid the cutting of the wires in the lifting process.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a range hood, includes fan frame, box and electrical apparatus module, the box can go up and down relatively fan frame, electrical apparatus module's part sets up in the fan frame and the part sets up on the box, connect its characterized in that through first wire electricity between the electrical apparatus module part on the fan frame and the box: the box parcel is in the periphery of fan frame, first wire gets into in the box along the top and the lateral surface of fan frame, first wire swings along the lift of box.

In order to guide the routing of the first wire conveniently, the first wire is prevented from being wound while swinging, a first fixed point is arranged on the left side or the right side of the fan frame, a second fixed point is arranged on the rear side of the top of the box body, the first fixed point and the second fixed point are located on the same side of the fan frame, a certain distance is reserved between the first fixed point and the second fixed point in the vertical direction and the horizontal direction, the outgoing direction of the first fixed point is downward, the outgoing direction of the second fixed point is backward, and the first wire is restrained by the outgoing directions of the corresponding fixed points at the first fixed point and the second fixed point respectively.

Preferably, in order to avoid cutting of the first lead at the junction of the fan frame and the box body, a lead piece is arranged on the rear side of the top of the box body, and the first lead penetrates through the lead piece from the outer side face of the fan frame to enter the box body.

In order to guide the first wire to bend, the wire guide comprises a first wire part extending from front to back in a transverse direction for a certain distance, one side, close to the fan frame, of the first wire part is provided with a bottom support surface extending from front to back in the transverse direction, the bottom support surface is the bottom surface of a groove formed by sinking one side, far away from the fan frame, of the first wire part towards the direction of the fan frame, and a second fixing point is formed at the bottom support surface.

In order to realize the transition of the first wire from exposure to shielding, the wire guide further comprises a second wire part which is bent downwards from the rear end of the first wire part and extends longitudinally, one side of the second wire part, which is far away from the fan frame, is provided with a covering surface extending longitudinally, an opening is formed between the bottom support surface and the covering surface of the wire guide, and the first wire penetrates into one side of the wire guide, which is close to the fan frame, from the opening after being bent from the bottom support surface of the first wire part.

In order to restrain the first lead wire from swinging in the radial direction, the size of the opening in the axial direction of the portion of the first lead wire corresponding to the lead member is larger than the size of the opening in the radial direction of the first lead wire.

To facilitate the guiding of the first wire into the housing, the wire guide is formed with guide grooves at one side close to the blower housing and at the rear side, the guide grooves extending from the openings to the ends of the second wire portions.

To further constrain the first wire, the wire guide further includes a stop bar disposed at the shoe surface, the first wire passing between the shoe surface and the stop bar.

In order to facilitate the lifting of the control box body, the minimum distance between the wire guide piece and the travel switch can be accurately controlled, the wiring space is utilized to the maximum extent under the condition of ensuring no interference, the outer side surface of the fan frame is also provided with two travel switches which are arranged at an upper interval and a lower interval, the travel switches are electrically connected with the electrical module through second wires, and the wire guide piece is provided with a triggering protrusion matched with the travel switches.

In order to avoid damaging the travel switch, the working surface of the trigger bulge is an inclined surface or an arc surface.

In order to avoid interference of the first lead, the travel switch and the second lead, the combination of the first lead and the lead piece and the combination of the travel switch and the second lead are arranged in a staggered mode, the first lead and the lead piece are arranged on the upper layer in the normal direction of the outer side face of the fan frame, and the travel switch and the second lead are arranged on the lower layer.

Preferably, a line card is further arranged on the outer side face of the fan frame, the first lead penetrates through the line card, and a first fixing point is formed at the line card.

In order to restrain the deformation of the first wire conveniently, the first wire is prevented from being in uncontrollable contact wear with the box body, a fan outer cover is arranged on the outer side of the fan frame, and a space for swinging the first wire is formed between the fan outer cover and the fan frame.

In order to ensure that the space between the fan frame and the fan outer cover is used for the first lead to swing, the fan outer cover is only fixedly connected with the fan frame at the upper end and the lower end.

In order to facilitate the control of the lifting of the box body, two travel switches which are arranged at intervals up and down are further arranged on the outer side face of the fan frame, and the travel switches are electrically connected with the electrical module through second wires.

In order to fix the second lead, the range hood further comprises a line pressing plate, and the part of the second lead connected with the travel switch positioned below is fixed between the line pressing plate and the wind rack.

Preferably, the second lead is fixed in a manner that a wire clamping protrusion is arranged on one side of the wire pressing plate facing the wind rack, and the second lead is clamped into the wire clamping protrusion and fixed.

In order to facilitate the clamping of the second lead during installation, the front end face of the wire pressing plate extends backwards to form an inner groove, and the innermost side of the inner groove is inclined with a connecting line of the wire clamping protrusion.

Compared with the prior art, the utility model has the advantages that: the connecting wire for connecting the electrical module between the fan frame and the lifting box body enters the box body from the top of the fan frame along the outer side face of the fan frame, so that electric connection can be realized by adopting a short wire, the swinging of the connecting wire occurs in a gap between the fan frame and the box body, the connecting wire is limited to be two-dimensional swinging of the side face of the fan frame, and the wire is prevented from being cut in the lifting process; the wire guide piece is arranged, so that the wiring is guided, the shielding effect is achieved, and the connecting wire is prevented from being exposed; through the matching of the fan frame and the fan outer cover, the exposed connecting piece on the outer side surface of the fan frame is shielded by the fan outer cover, and the fan outer cover further restricts the swing of the connecting line; the lifting of the box body is controlled by the arrangement of the travel switch, and the protrusion used for triggering the travel switch is arranged on the wire guide piece, so that the minimum distance between the wire guide piece and the travel switch can be accurately controlled, and the wiring space is utilized to the maximum extent under the condition of ensuring no interference.

Drawings

Fig. 1 is a schematic view of an open state of a range hood according to an embodiment of the present invention;

fig. 2 is a schematic view of the range hood according to the embodiment of the present invention hidden in the outer cover of the fan in the open state;

FIG. 3 is a cross-sectional view of the range hood of FIG. 1;

FIG. 4 is an enlarged view of a portion I of FIG. 3;

FIG. 5 is a partial schematic view of a wire, wire guide and tension plate connection according to an embodiment of the present invention;

fig. 6 is a partial schematic view (from a different perspective than fig. 5) of a wire, wire guide and tension disc connection according to an embodiment of the utility model;

FIG. 7 is a schematic view of a wire guide according to an embodiment of the present invention (hidden stop lever);

fig. 8 is a schematic view (different from the view of fig. 7) of a wire guide according to an embodiment of the utility model;

fig. 9 is a schematic view of a tension disc according to an embodiment of the present invention;

fig. 10 is a schematic view of a range hood according to an embodiment of the present invention, in a closed state, hiding a fan housing.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and that the directional terms are used for purposes of illustration and are not to be construed as limiting, for example, because the disclosed embodiments of the present invention may be oriented in different directions, "lower" is not necessarily limited to a direction opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 1 to 4, a range hood includes a fan frame 1, a box body 2, a first lead 3 and a second lead 4, wherein a fan housing 5 is fixedly disposed at the periphery of the fan frame 1. The box 2 wraps up in the periphery of fan dustcoat 5, and under the installation state, fan frame 1 is fixed like the wall with the outside installation basis of range hood, and has seted up air intake (not shown) on the box 2 to can go up and down relative fan frame 1 (fan dustcoat 5), thereby realize the lift adjustment of air intake height. The blower housing 5 is in a shape with a rear-side opening and is disposed on the periphery of the blower frame 1.

The range hood further comprises an electrical module, a part of the electrical module is arranged on the fan frame 1, a part of the electrical module is arranged on the box body 2, the electrical module comprises an electrical box 11 arranged at the top of the fan frame 1, and a control panel, a lighting device and the like (not shown) arranged on the front side of the box body 2, and the electrical box 11 usually comprises a power panel, a control circuit board and the like. In order to realize communication and power supply, the electrical modules need to be electrically connected through an electrical appliance connecting wire. The first conducting wire 3 and the second conducting wire 4 are electrical appliance connecting wires. One end of the first wire 3 is electrically connected to the inside of the electrical box 11, and the other end is connected to the front side of the box body 2 (generally, a control panel, a lighting device, etc. are provided at the front side of the box body 2, and are located at the middle or lower part of the box body 2), thereby realizing communication and power supply. Two travel switches 6 which are arranged at intervals up and down are arranged on the outer side surface (left side or right side) of the fan frame 1, so that the lifting control of the box body 2 is realized. The second wires 4 have two, and each second wire 4 corresponds to one travel switch 6, so that the travel switches 6 and the electrical box 11 are electrically connected through the second wires 4.

In the present embodiment, the first wire 3 is led out from the electrical box 11, and then extends along the top of the fan frame 1, the right side of the fan frame 1, and the wire guide 7 disposed at the corresponding position of the casing 2 and the right side of the fan frame 1, and enters the inside of the casing 2 from the rear side of the casing 2. The wire guide 7 is arranged at the rear side of the housing 2, preferably at the top of the housing 2. The right side of the fan frame 1 is also provided with a line card 9, and the first lead 3 passes through the line card 9. The position where the first wire 3 enters the wire guide 7 is denoted as the entrance of the wire guide 7, whereby the position at the line card 9 is denoted as a first fixing point O1, the position at the entrance of the wire guide 7 is denoted as a second fixing point O2, and the first fixing point O1 is at a distance from the second fixing point O2 both vertically and horizontally. The first fixing point O1 is pointed downward (not limited to vertical) and the second fixing point O2 is pointed toward the wall (not limited to horizontal). The first lead wire 3 is led out from the electrical box 11 of the fan frame 1 and then fixed to the first fixing point O1 and the second fixing point O2, respectively. In the fully unfolded state of the complete machine, the first wire 3 between the two fixing points is kept in a relaxed state. Referring to fig. 10, when the case 2 is raised upward, the vertical distance between the first fixing point O1 and the second fixing point O2 becomes smaller, and the portion of the first wire 3 between the fixing points is further bent. In the whole process, the first lead 3 keeps drooping under the action of gravity and self elasticity, and winding is avoided.

Referring to fig. 2, 5 to 9, the wire guide 7 has an inverted L-shape as a whole, and includes a first wire portion 71 extending laterally from the front to the rear by a distance, and a second wire portion 72 extending longitudinally from the rear end of the first wire portion 71 and bent downward. The first wire portion 71 has a bottom surface 711 extending in the front-rear direction on the side close to the fan frame 1, the bottom surface 711 is a concave surface (the bottom surface of a groove formed by recessing the side of the first wire portion 71 away from the fan frame 1 in the direction of the fan frame 1), and the bottom surface 711 forms a second fixing point O2. A blocking bar 75 may be provided at the mounting surface 711, and the first wire 3 may pass between the mounting surface 711 and the blocking bar 75. The second conductor part 72 has a cover surface 721 extending in the longitudinal direction on the side facing away from the wind turbine housing 1, the conductor element 7 forming an opening 712 between the base surface 711 and the cover surface 721, the dimension of the opening 712 in the axial direction of the first conductor 3 being greater than the dimension of the opening 712 in the radial direction of the first conductor 3. In the present embodiment, the axial direction of the first wire 3 is the front-rear direction (constrained to extend front-rear at the first wire portion 71), and the radial direction of the first wire 3 is the left-right direction. Thus, the first wire 3 can be conveniently bent from the bottom mounting surface 711 of the first wire part 71 and then inserted into the side of the wire member 7 close to the fan frame 1 through the opening 712 after extending downward from the wire clip 9. The aperture 712 is good at constraining the first conductor 3 from swinging in the radial direction, and the first conductor 3 can make an exposed to hidden transition at the aperture 712.

The wire guide 7 is formed with a guide groove 73 at a side close to the blower housing 1 and a rear side, and the guide groove 73 extends from the opening 712 to the end of the second wire portion 72.

The wire guide 7 is a single-layer material in the thickness direction (i.e. the normal direction of the surface of the fan frame 1), and mainly provides more space for the wire harness. Referring to fig. 3 and 4, the flat space formed between the wall surface of the blower housing 1 and the blower cover 5 can restrain the deformation of the first wire 3 and prevent the first wire 3 from being uncontrollably worn by contact with the case 2. The fan housing 5 serves as a surface for constraining the first wire 3 inside the wire member 7 when inside the fan housing 5. The fan housing 5 may completely shield the first wire 3. When the fan outer cover 5 is taken out, the wire guide 7 is sealed with the box body 2 and the like. The first lead 3 is provided with PVC and is wrapped by a yellow wax pipe, so that the lead has certain bending resistance. When the two sides are restrained, large radial swing can be avoided at the opening 712, and the fan housing 5 cannot be in contact with the end face of the fan housing under large stress.

From above, wire 7 parcel first wire 3 up-and-down motion, need keep the gap that this motion needs between 5 covers of fan dustcoat and the fan frame 1. The fan housing 5 is therefore fixed to the fan frame 1 only at the upper and lower ends.

With the wire guide 7 provided as above, the following effects can be achieved: protecting the first lead 3 and preventing sharp edges of the fan outer cover 5 from cutting the first lead 3. Secondly, the first lead 3 of the fixed point is restrained from moving, and winding is better prevented. And thirdly, constructing an L-shaped channel to reduce the exposure of the first lead 3 and leading the first lead into the box body 2. The wire guide 7 is provided with a bottom supporting surface 711 and a covering surface 721, and an opening 712 is formed at the junction of the two surfaces, so that the first wire 3 can be conveniently inserted, the radial swing of the first wire 3 can be well restrained, and the first wire 3 is exposed to be hidden at the position.

Referring again to fig. 2, 5, 6 and 10, the two travel switches 6 are distributed on a vertical line. A trigger protrusion 74 for triggering the travel switch 6 is provided on the first wire portion 71 of the wire guide 7 facing the blower frame 1, and a working surface of the trigger protrusion 74, i.e., a surface for abutting against the contact of the travel switch 6, is an inclined surface or an arc surface in order to prevent damage to the travel switch 6.

By providing the trigger protrusion 74 on the wire guide 7, the minimum distance of the wire guide 7 from the stroke switch 6 and the like can be precisely controlled, preventing interference. The wiring space is utilized to the maximum extent under the condition of ensuring no interference, and when the wire guide 7 deforms (the wire guide 7 is in a cantilever beam structure and is easy to deform) and approaches the travel switch 6, the trigger bulge 74 on the wire guide 7 is in contact with the fan frame 1 in advance, so that further deformation is prevented. The distance can thus be set small and the occurrence of interference can be completely avoided, which would not be possible if the trigger projection 74 were placed on another component. The wire guide 7 where the trigger protrusion 74 is located is fixed with the box body 2, so that the position of the trigger protrusion 74 relative to the travel switch 6 can be ensured to be accurate in the whole lifting movement process, and meanwhile, when the trigger protrusion is in contact with the travel switch 6, the first wire 4 does not have the risk of being in contact with the second wire 4.

Because the travel switch 6 is completely covered in the scanning range of the first lead 3, namely, the travel switch is positioned in the space between the point of the first lead 3 bending downwards from the top of the fan frame 1 and the upper part of the lead piece 7. To prevent interference, and since the space is narrow, the gap is as small as possible, thereby providing the space as much as possible for the first wire 3. In this embodiment, the combination of the first lead 3 and the lead member 7 and the combination of the travel switch 6 and the second lead 4 are arranged in a staggered manner, the first lead 3 and the lead member 7 are disposed on the upper layer, and the travel switch 6 and the second lead 4 thereof are disposed on the lower layer. The upper layer and the lower layer refer to that in the normal direction of the right side surface of the fan frame 1, all parts are at different heights, the swinging first lead 3 and the lead piece 7 are arranged on the upper layer, and the travel switch 6 and the fixed second lead 4 thereof are arranged on the lower layer. The upper layer is located to the right of the lower layer as seen in fig. 2.

The second wire 4 connected to the lower travel switch 6 is covered and fixed by the tension plate 8, so that part of the second wire 4 is pressed and fixed between the tension plate 8 and the wind stand 1. Have inner groovy 81 on the line ball board 8, by line ball board 8's preceding terminal surface backward extension and form, line ball board 8 still is provided with card line arch 82 towards one side of fan frame 1, card line arch 82 has a plurality ofly to interval arrangement in vertical direction, the quantity of inner groovy 81 corresponds with card line arch 82, the line slope of the most inboard (being the rearmost side) of inner groovy 81 and corresponding card line arch 82 can draw in the quick one-level of second wire 4 inside card line arch 82. This is because the second wire 4 is snapped into the snap protrusion 82, which provides a horizontal force to the right, and the presence of the inner groove 81 allows the second wire 4 to have a greater degree of tilt, increasing the force component. In actual assembly, the second lead 4 is clamped in a primary level manner, so that the second lead 4 is pressed between the fan frame 1 and the line pressing plate 8.

Claims (18)

1. The utility model provides a range hood, includes fan frame (1), box (2) and electrical apparatus module, box (2) can go up and down relative fan frame (1), the part setting of electrical apparatus module is on fan frame (1) and the part sets up on box (2), connect its characterized in that through first wire (3) electricity between the electrical apparatus module part on the fan frame (1) and the electrical apparatus module part on box (2): the box (2) wraps the periphery of the fan frame (1), the first lead (3) enters the box (2) along the top and the outer side face of the fan frame (1), and the first lead (3) swings along with the lifting of the box (2).

2. The range hood of claim 1, wherein: the left side or the right flank of fan frame (1) are provided with first fixed point (O1), box (2) top rear side is provided with second fixed point (O2), first fixed point (O1) and second fixed point (O2) are located the same one side of fan frame (1), first fixed point (O1) and second fixed point (O2) all have a certain distance in vertical and horizontal direction, the direction of being qualified for the next round of competitions of first fixed point (O1) is downward, the direction of being qualified for the next round of competitions of second fixed point (O2) is backward, first wire (3) are in first fixed point (O1) and second fixed point (O2) department and are restricted by corresponding fixed point direction of being qualified for the next round of competitions respectively.

3. The range hood of claim 2, wherein: the rear side of the top of the box body (2) is provided with a wire guide (7), and the first wire (3) penetrates through the wire guide (7) from the outer side surface of the fan frame (1) and enters the box body (2).

4. The range hood of claim 3, wherein: the wire guide (7) comprises a first wire guide part (71) extending from front to back in a transverse direction for a certain distance, one side, close to the fan frame (1), of the first wire guide part (71) is provided with a bottom support surface (711) extending from front to back in the transverse direction, the bottom support surface (711) is the bottom surface of a groove formed by sinking one side, far away from the fan frame (1), of the first wire guide part (71) towards the direction of the fan frame (1), and a second fixing point (O2) is formed at the position of the bottom support surface (711).

5. The range hood of claim 4, wherein: the wire guide piece (7) further comprises a second wire guide part (72) which is bent downwards from the rear end of the first wire guide part (71) and extends longitudinally, a covering surface (721) which extends longitudinally is arranged on one side, away from the fan frame (1), of the second wire guide part (72), an opening (712) is formed between the bottom supporting surface (711) and the covering surface (721) of the wire guide piece (7), and the first wire (3) penetrates into one side, close to the fan frame (1), of the wire guide piece (7) through the opening (712) after being bent from the bottom supporting surface (711) of the first wire guide part (71).

6. The range hood of claim 5, wherein: the size of the opening (712) in the axial direction of the portion of the first lead (3) corresponding to the lead member (7) is larger than the size of the opening (712) in the radial direction of the first lead (3).

7. The range hood of claim 6, wherein: the wire guide (7) is provided with a guide groove (73) at one side close to the fan frame (1) and at the rear side, and the guide groove (73) extends to the tail end of the second wire part (72) from the opening (712).

8. The range hood of claim 4, wherein: the wire guide (7) further comprises a stop lever (75) arranged at the bottom support surface (711), and the first wire (3) passes through between the bottom support surface (711) and the stop lever (75).

9. The range hood of claim 3, wherein: the outer side surface of the fan frame (1) is further provided with two travel switches (6) which are arranged at intervals up and down, the travel switches (6) are electrically connected with the electrical module through second wires (4), and the wire guide (7) is provided with a trigger bulge (74) which is used for being matched with the travel switches (6).

10. The range hood of claim 9, wherein: the working surface of the trigger bulge (74) is an inclined surface or a circular arc surface.

11. The range hood of claim 9, wherein: the combination of the first lead (3) and the lead piece (7) and the combination of the travel switch (6) and the second lead (4) are arranged in a staggered manner, the first lead (3) and the lead piece (7) are arranged on the upper layer, and the travel switch (6) and the second lead (4) are arranged on the lower layer in the normal direction of the outer side surface of the wind frame (1).

12. The range hood according to any one of claims 2 to 11, wherein: the outer side face of the fan rack (1) is further provided with a line card (9), the first lead (3) penetrates through the line card (9), and a first fixing point (O1) is formed at the line card (9).

13. The range hood according to any one of claims 1 to 11, wherein: the fan is characterized in that a fan outer cover (5) is arranged on the outer side of the fan frame (1), and a space for the first conducting wire (3) to swing is formed between the fan outer cover (5) and the fan frame (1).

14. The range hood of claim 13, wherein: the fan outer cover (5) is only fixedly connected with the fan frame (1) at the upper end and the lower end.

15. The range hood according to any one of claims 1 to 8, wherein: the outer side surface of the fan frame (1) is further provided with two travel switches (6) which are arranged at intervals up and down, and the travel switches (6) are electrically connected with the electric appliance module through second wires (4).

16. The range hood of claim 15, wherein: the range hood also comprises a line pressing plate (8), and the part of a second lead (4) connected with a travel switch (6) positioned below is fixed between the line pressing plate (8) and the wind rack (1).

17. The range hood of claim 16, wherein: one side of the wire pressing plate (8) facing the fan frame (1) is provided with a wire clamping protrusion (82), and the second lead (4) is clamped into the wire clamping protrusion (82) and fixed.

18. The range hood of claim 17, wherein: the front end face of the wire pressing plate (8) extends backwards to form an inner groove (81), and the innermost side of the inner groove (81) is inclined with a connecting line of the wire clamping protrusion (82).

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