Range hood

Abstract

The utility model discloses a range hood, which comprises a range hood main body, the range hood also comprises a movement mechanism for driving the range hood main body to lift, the range hood main body is connected with an external mounting foundation through the movement mechanism to realize hoisting, and the movement mechanism comprises a plate body which is fixedly connected with the external mounting foundation; a driving mechanism; the device comprises a plate body, a first wrapping post, a second wrapping post, a first rope, a second rope, a third rope, a fourth rope and a driving mechanism, the first wrapping post and the second wrapping post are arranged on the plate body, and the first wrapping post and the second wrapping post are driven by the driving mechanism to rotate along the axis of the first wrapping post and the axis of the second wrapping post. One end of the first rope and one end of the second rope are both wound on the first winding post, the other end of the first rope and the other end of the second rope are both connected with the range hood main body, one end of the third rope and one end of the fourth rope are both wound on the second winding post, and the other end of the third rope and the other end of the fourth rope are both connected with the range hood main body.

Description

Technical Field

[0001] The utility model relates to an oil fume purification device, in particular to an oil fume extractor. Background Art

[0002] Range hoods have become one of the indispensable kitchen appliances in modern families.

[0003] For example, a Chinese utility model patent with application number 202122053506.7 discloses a ceiling-mounted range hood, which includes: a shell assembly, a wind drum assembly, an aluminum mesh assembly, a ceiling-mounted range hood, and an electric control assembly. The shell assembly has an installation cavity, and an air inlet and an air outlet connected to the installation cavity, the wind drum assembly is arranged in the installation cavity, the aluminum mesh assembly is detachably arranged in the shell assembly and covers the air inlet, the ceiling-mounted range hood is arranged in the shell assembly, the electric control assembly is arranged in the installation cavity, and the wind drum assembly is electrically connected to the electric control assembly.

[0004] The above-mentioned ceiling-mounted range hood cannot realize the lifting function, thereby making the maintenance and cleaning of the range hood inconvenient. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a range hood with a lifting function to facilitate maintenance and cleaning in view of the deficiencies in the above-mentioned prior art.

[0006] The utility model solves the above technical problems by adopting the following technical solution: a range hood, comprising a range hood body, characterized in that the range hood further comprises a motion mechanism for driving the range hood body to rise and fall, the range hood body is connected to an external mounting base through the motion mechanism to achieve hoisting, and the motion mechanism comprises:

[0007] The plate body is connected and fixed to the external mounting base;

[0008] Driving mechanism;

[0009] A first winding post, a second winding post, a first rope, a second rope, a third rope and a fourth rope, the driving mechanism, the first winding post and the second winding post are arranged on the plate body, the first winding post and the second winding post are driven by the driving mechanism and can rotate along their own axes, one end of the first rope and the second rope are both wound on the first winding post, and the other ends of the first rope and the second rope are both connected to the range hood body, one end of the third rope and the fourth rope are both wound on the second winding post, and the other ends of the third rope and the fourth rope are both connected to the range hood body.

[0010] By providing a motion mechanism, the lifting and lowering of the range hood body can be controlled, which facilitates the maintenance and cleaning of the range hood. When the range hood body is not in use, it can be lifted up without occupying space.

[0011] Preferably, the top of the range hood body is rectangular, and the first rope, the second rope, the third rope and the fourth rope respectively correspond to a corner of the top of the range hood body, so that each position of the range hood body remains balanced when the range hood body is raised or lowered.

[0012] Furthermore, the first winding pole and the second winding pole are both arranged vertically, the first rope is wound around the upper part of the first winding pole and the second rope is wound around the lower part of the first winding pole, the winding directions of the first rope and the second rope are opposite, the third rope is wound around the upper part of the second winding pole and the fourth rope is wound around the lower part of the second winding pole, the winding directions of the third rope and the fourth rope are opposite, thereby facilitating the ropes wound on the same winding pole to synchronously drive the range hood body to rise and fall, and avoiding interference between the ropes.

[0013] To further avoid interference between ropes on the same winding pole, a first outer shell is provided outside the first winding pole, and a second outer shell is provided outside the second winding pole. The outlets through which the first rope and the third rope pass through the corresponding outer shells are both at the upper end, and the outlets through which the second rope and the fourth rope pass through the corresponding outer shells are both at the lower end.

[0014] In order to make the rope wind in order on the winding pole and avoid stacking or knotting, the outer circumference of the first winding pole is formed with a first thread and a second thread, and the outer circumference of the second winding pole is formed with a third thread and a fourth thread, the first thread and the second thread have opposite rotation directions, and the third thread and the fourth thread have opposite rotation directions;

[0015] The first rope is wound around the first thread, the second rope is wound around the second thread, the third rope is wound around the third thread, and the fourth rope is wound around the fourth thread.

[0016] In order to achieve guidance and improve lifting stability, the motion mechanism also includes a first pulley, a second pulley, a third pulley and a fourth pulley, all of which are arranged on the plate body. The plate body is rectangular, and each pulley is arranged corresponding to the four corners of the plate body. The first rope is wrapped around the first pulley, the second rope is wrapped around the second pulley, the third rope is wrapped around the third pulley, and the fourth rope is wrapped around the fourth pulley.

[0017] In order to set each pulley, the motion mechanism also includes a first bracket, a second bracket, a third bracket and a fourth bracket, all of which are arranged on the plate body, the first pulley is arranged on the first bracket, the second pulley is arranged on the second bracket, the third pulley is arranged on the third bracket, and the fourth pulley is arranged on the fourth bracket.

[0018] In order to achieve guidance and improve lifting stability, the motion mechanism also includes a first guide wheel, a second guide wheel, a third guide wheel and a fourth guide wheel, all of which are arranged on the plate body. The first guide wheel is arranged between the first pulley and the first winding post, and the first rope portion between the first pulley and the first winding post is wound around the first guide wheel. The second guide wheel is arranged between the second pulley and the first winding post, and the second rope portion between the second pulley and the first winding post is wound around the second guide wheel. The third guide wheel is arranged between the third pulley and the second winding post, and the third rope portion between the third pulley and the second winding post is wound around the third guide wheel. The fourth guide wheel is arranged between the fourth pulley and the second winding post, and the fourth rope portion between the fourth pulley and the second winding post is wound around the fourth guide wheel.

[0019] In order to set each guide wheel, the movement mechanism also includes a fifth bracket, a sixth bracket, a seventh bracket and an eighth bracket, all of which are arranged on the plate body, the first guide wheel is arranged on the fifth bracket, the second guide wheel is arranged on the sixth bracket, the third guide wheel is arranged on the seventh bracket, and the fourth guide wheel is arranged on the eighth bracket.

[0020] In order to realize the transmission between the driving mechanism and each winding post, the movement mechanism also includes a first gear assembly for transmitting the torque of the driving mechanism to the first winding post and a second gear assembly for transmitting the torque of the driving mechanism to the second winding post.

[0021] In order to realize transmission between the driving mechanism and each winding post, the driving mechanism includes a screw-shaped output end, and the first gear assembly and the second gear assembly respectively have a primary gear meshing with the output end and a final gear coaxial with the corresponding winding post.

[0022] In order to set each gear, the motion mechanism also includes a base for setting each gear and a cover plate for limiting each gear on the base, the cover plate is covered on the base, and the output end of the drive mechanism is also located on the inner side of the base.

[0023] Compared with the prior art, the utility model has the advantages that: by setting a motion mechanism, the range hood body can be controlled to rise and fall, which is convenient for the maintenance and cleaning of the range hood. When the range hood body is not in use, it can be raised upward without occupying space. The motion mechanism can realize the lifting and lowering of four ropes by one driving mechanism, which is low in cost, and the entire motion mechanism has smooth movement, small friction, no obvious noise, no need to lengthen the driving mechanism shaft, and a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the installation of a range hood according to an embodiment of the utility model;

[0025] Figure 2 It is a top schematic diagram of a range hood according to an embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the range hood according to the embodiment of the utility model after the cover is hidden;

[0027] Figure 4 It is a schematic diagram of the first pulley and the third pulley of the range hood according to the embodiment of the utility model after the top section;

[0028] Figure 5 It is a schematic diagram of the second pulley and the fourth pulley of the range hood according to the embodiment of the utility model when viewed from the top;

[0029] Figure 6 This is a schematic diagram of the installation of various components of the range hood according to an embodiment of the utility model on a plate;

[0030] Figure 7 This is a schematic diagram of the range hood according to the embodiment of the utility model after the plate body and the brackets are hidden;

[0031] Figure 8 A schematic diagram of a hidden plate of a movement mechanism of a range hood according to an embodiment of the utility model;

[0032] Fig. 9 It is a schematic diagram of the exploded structure of the hidden plate body, the outer shell of the winding column, the pulley and the guide wheel of the range hood movement mechanism of the embodiment of the utility model. DETAILED DESCRIPTION

[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0034] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present utility model can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0035] See also Figure 1 A range hood includes a range hood body 1 and a motion mechanism for driving the range hood body 1 to rise and fall. The motion mechanism is disposed above the range hood body 1 and is connected to an external mounting base. In this embodiment, the motion mechanism is disposed on a suspended ceiling 100, and the suspended ceiling 100 constitutes an external mounting base, thereby enabling the range hood body 1 and the suspended ceiling 100 to be suspended.

[0036] See also Figure 2 to Figure 9 The moving mechanism includes a plate body 21 connected and fixed to the ceiling 100, and a driving mechanism 22, a first winding pole 23, a second winding pole 24, a first rope 25, a second rope 26, a third rope 27, a fourth rope 28, a first pulley 29, a second pulley 210, a third pulley 211, a fourth pulley 212, a first guide wheel 213, a second guide wheel 214, a third guide wheel 215 and a fourth guide wheel 216, all of which are arranged on the plate body 21.

[0037] See also Figure 7The first winding post 23 and the second winding post 24 are both arranged longitudinally, preferably arranged vertically up and down, and the first winding post 23 and the second winding post 24 are both driven by the driving mechanism 22 and can rotate along their own axes. Preferably, the driving mechanism 22 is a motor. The first guide wheel 213 and the first pulley 29 are arranged correspondingly, and the rotation axis direction of the first guide wheel 213 is arranged longitudinally, and the rotation axis direction of the first pulley 29 is arranged front and back. One end of the first rope 25 is connected to the first winding post 23 and wound on the first winding post 23, and the other end of the first rope 25 is successively wound around the first guide wheel 213 and the first pulley 29, and then extends toward the bottom of the plate 21 and is connected to the top of the range hood body 1. The second guide wheel 214 is arranged correspondingly to the second pulley 210, and the rotation axis direction of the second guide wheel 214 is arranged longitudinally, and the rotation axis direction of the second pulley 210 is arranged front and back. One end of the second rope 26 is connected to the first winding post 23 and is wound around the first winding post 23. The other end of the second rope 26 is wound around the second guide wheel 214 and the second pulley 210 in sequence, and then extends toward the bottom of the plate 21 to connect with the top of the range hood body 1. The third guide wheel 215 and the third pulley 211 are correspondingly arranged. The rotation axis direction of the third guide wheel 215 is longitudinally arranged, and the rotation axis direction of the third pulley 211 is front-to-back arranged. One end of the third rope 27 is connected to the second winding post 24 and is wound around the second winding post 24. The other end of the third rope 27 is wound around the third guide wheel 215 and the third pulley 211 in sequence, and then extends toward the bottom of the plate 21 to connect with the top of the range hood body 1. The fourth guide wheel 216 and the fourth pulley 212 are correspondingly arranged. The rotation axis direction of the fourth guide wheel 216 is longitudinally arranged, and the rotation axis direction of the fourth pulley 212 is front-to-back arranged. One end of the fourth rope 28 is connected to the second winding post 24 and wound around the second winding post 24, and the other end of the fourth rope 28 is wound around the fourth guide wheel 216 and the fourth pulley 212 in sequence, and then extends toward the bottom of the plate 21 and is connected to the top of the range hood body 1. A first housing 233 is provided on the periphery of the first winding post 23, and a second housing 243 is provided on the periphery of the second winding post 24, and each housing can prevent the winding state of the corresponding winding post and rope from being disturbed by the outside.

[0038] The first guide wheel 213 and the second guide wheel 214 are respectively arranged on the front and rear sides of the first winding post 23 (the first guide wheel 213 is at the rear and the second guide wheel 214 is at the front), and the third guide wheel 215 and the fourth guide wheel 216 are respectively arranged on the front and rear sides of the second winding post 24 (the third guide wheel 215 is at the rear and the fourth guide wheel 216 is at the front). Alternatively, the first guide wheel 213 and the second guide wheel 214 may be respectively arranged on the left and right sides of the first winding post 23, and the third guide wheel 215 and the fourth guide wheel 216 may be respectively arranged on the left and right sides of the second winding post 24. It is sufficient as long as the first guide wheel 213 and the second guide wheel 214 are respectively arranged on both sides of the vertical direction of the axis of the first winding post 23, and the third guide wheel 215 and the fourth guide wheel 216 are respectively arranged on both sides of the vertical direction of the axis of the second winding post 24.

[0039] In order to facilitate the winding and positioning of each rope and avoid stacking and knotting, the outer circumference of the first winding post 23 is formed with a first thread 231 and a second thread 232, and the outer circumference of the second winding post 24 is formed with a third thread 241 and a fourth thread 242, wherein the first thread 231 is arranged on the second thread 232 and the first thread 231 and the second thread 232 have opposite directions of rotation, and the third thread 241 is arranged on the fourth thread 242 and the third thread 241 and the fourth thread 242 have opposite directions of rotation. In this embodiment, the first thread 231 is left-handed (counterclockwise), the second thread 232 is right-handed (clockwise), the third thread 241 is right-handed (clockwise), and the fourth thread 242 is left-handed (counterclockwise). The first rope 25 is wound on the first thread 231 and wound from bottom to top, that is, the connection between it and the first winding post 23 is located at the lower end of the winding part, and the second rope 26 is wound on the second thread 232 and wound from top to bottom, that is, the connection between it and the first winding post 23 is located at the upper end of the winding part. The third rope 27 is wound on the third thread 241 and wound from bottom to top, that is, the connection between it and the second winding post 24 is located at the upper end of the winding part, and the fourth rope 28 is wound on the fourth thread 242 and wound from top to bottom, that is, the connection between it and the second winding post 24 is located at the upper end of the winding part.

[0040] In addition, through the above method (the two ropes on the same winding pole are respectively wound on the upper and lower parts and the winding directions are opposite), the two ropes wound on the same winding pole can synchronously drive the range hood body 1 to rise and fall, and the two ropes on the same winding pole are prevented from interfering with each other.

[0041] In this embodiment, the plate body 21 and the top of the range hood body 1 are both rectangular. Four pulleys are arranged at the four corners of the plate body 21, and the connection points of the four ropes and the range hood body 1 are also located at the four corners of the top of the range hood body 1 (each rope corresponds to one corner).

[0042] The motion mechanism further includes a first bracket 31, a second bracket 32, a third bracket 33 and a fourth bracket 34, all of which are arranged on the plate body 21. The first pulley 29 is arranged on the first bracket 31, the second pulley 210 is arranged on the second bracket 32, the third pulley 211 is arranged on the third bracket 33, and the fourth pulley 212 is arranged on the fourth bracket 34. The first bracket 31 and the third bracket 33 are at the rear, and the second bracket 32 ​​and the fourth bracket 34 are at the front.

[0043] The motion mechanism further includes a fifth bracket 35, a sixth bracket 36, a seventh bracket 37 and an eighth bracket 38, all of which are arranged on the plate body 21. The first guide wheel 213 is arranged on the fifth bracket 35, the second guide wheel 214 is arranged on the sixth bracket 36, the third guide wheel 215 is arranged on the seventh bracket 37, and the fourth guide wheel 216 is arranged on the eighth bracket 38. The fifth bracket 35 and the seventh bracket 37 are at the rear, while the sixth bracket 36 and the eighth bracket 38 are at the front.

[0044] The motion mechanism also includes a first gear assembly and a second gear assembly. The first gear assembly is arranged between the driving mechanism 22 and the first winding post 23, and transmits the torque of the driving mechanism 22 to the first winding post 23. The second gear assembly is arranged between the driving mechanism 22 and the second winding post 24, and transmits the torque of the driving mechanism 22 to the second winding post 24. The driving mechanism 22 includes an output end 221 in the shape of a screw. The first gear assembly includes a first gear 217, a second gear 218 and a third gear 219. The first gear 217 is meshed with the output end 221, the second gear 218 is meshed with the first gear 217, the third gear 219 is meshed with the second gear 218, and the third gear 219 is coaxially connected to the first winding post 23. The second gear assembly includes a fourth gear 220, a fifth gear 221 and a sixth gear 222. The fourth gear 220 is meshed with the output end 221, the fifth gear 221 is meshed with the fourth gear 220, the sixth gear 222 is meshed with the fifth gear 221, and the sixth gear 222 is coaxially connected to the second winding post 24. The number of each gear assembly can be determined according to the need for speed reduction. There can be only one gear or at least two gears, as long as the primary gear of each gear assembly is meshed with the output end 221, and the final gear of each gear assembly is coaxially linked with the corresponding winding post. When there is only one gear, the primary gear and the final gear are the same.

[0045] The motion mechanism further includes a base 223 for setting each gear and a cover plate 224 for limiting each gear on the base 223 . The cover plate 224 is covered on the base 223 . The output end 221 of the driving mechanism 22 is also located on the inner side of the base 223 .

[0046] See also Figure 7 , the lifting control process of the range hood body 1 is as follows:

[0047] 1) Descending process:

[0048] 1.1) The output end 221 of the driving mechanism 22 rotates clockwise;

[0049] 1.2) The first gear 217 rotates clockwise, the second gear 218 rotates counterclockwise, the third gear 219 rotates clockwise, the fourth gear 220 rotates counterclockwise, the fifth gear 221 rotates clockwise, and the sixth gear 222 rotates counterclockwise;

[0050] 1.3) The outlet of the first rope 25 on the first winding post 23 (the position where it passes through the first housing 233) is located at the upper end, and the winding direction of the first rope 25 on the first winding post 23 is left-handed (counterclockwise), so the first rope 25 can be continuously extended, and after being guided by the first guide wheel 213 and the first pulley 29, the connection point between the first rope 25 and the range hood body 1 is vertically lowered;

[0051] The outlet of the second rope 26 on the first winding post 23 (the position where it passes through the first housing 233) is located at the lower end, and the winding direction of the second rope 26 on the first winding post 23 is right-handed (clockwise). The second rope 26 and the first rope 25 are symmetrically arranged, so that the second rope 26 can be continuously extended, and after being guided by the second guide wheel 214 and the second pulley 210, the connection point between the second rope 26 and the range hood body 1 is vertically lowered;

[0052] The outlet of the third rope 27 on the second winding post 24 (the position where the third rope 27 passes through the second housing 243) is located at the upper end, and the winding direction of the third rope 27 on the second winding post 24 is right-handed (clockwise), so the third rope 27 can be continuously extended, and after being guided by the third guide wheel 215 and the third pulley 211, the connection point between the third rope 27 and the range hood body 1 is lowered;

[0053] The outlet of the fourth rope 28 on the second winding post 24 (the position where it passes through the second housing 243) is located at the lower end, and the winding direction of the fourth rope 28 on the second winding post 24 is left-handed (counterclockwise). The fourth rope 28 and the third rope 27 are symmetrically arranged, so that the fourth rope 28 can be continuously extended, and after being guided by the fourth guide wheel 216 and the fourth pulley 212, the connection point between the fourth rope 28 and the range hood body 1 is vertically lowered;

[0054] The connection points of the ropes and the range hood body 1 are synchronously lowered, thereby achieving the lowering of the range hood body 1 .

[0055] 2) The ascending process is the reverse process of the descending process and will not be elaborated here.

[0056] The motion mechanism can realize one driving mechanism 22 driving four ropes to rise and fall, and the cost is low, and the entire motion mechanism moves smoothly, has low friction, no obvious noise, does not need to lengthen the driving mechanism shaft, and has a long service life. When the range hood body 1 is in other shapes, the number of ropes can also be adaptively changed according to the number of corners of the range hood body 1.

Claims

1. A range hood, comprising a range hood body (1), characterized in that: The range hood further comprises a motion mechanism for driving the range hood body (1) to rise and fall, the range hood body (1) being connected to an external mounting base via the motion mechanism to achieve hoisting, the motion mechanism comprising: The plate body (21) is connected and fixed to an external mounting base; A driving mechanism (22); A first winding post (23), a second winding post (24), a first rope (25), a second rope (26), a third rope (27) and a fourth rope (28); the driving mechanism (22), the first winding post (23) and the second winding post (24) are all arranged on the plate body (21); the first winding post (23) and the second winding post (24) are driven by the driving mechanism (22) to rotate along their own axes; one end of the first rope (25) and the second rope (26) are both wound around the first winding post (23); the other ends of the first rope (25) and the second rope (26) are both connected to the range hood body (1); one end of the third rope (27) and the fourth rope (28) are both wound around the second winding post (24); the other ends of the third rope (27) and the fourth rope (28) are both connected to the range hood body (1).

2. The range hood according to claim 1, characterized in that: The top of the range hood body (1) is rectangular, and the first rope (25), the second rope (26), the third rope (27) and the fourth rope (28) respectively correspond to a corner of the top of the range hood body (1).

3. The range hood according to claim 1 or 2, characterized in that: The first winding pole (23) and the second winding pole (24) are both arranged vertically, the first rope (25) is wound around the upper part of the first winding pole (23) and the second rope (26) is wound around the lower part of the first winding pole (23), the winding directions of the first rope (25) and the second rope (26) are opposite, the third rope (27) is wound around the upper part of the second winding pole (24) and the fourth rope (28) is wound around the lower part of the second winding pole (24), the winding directions of the third rope (27) and the fourth rope (28) are opposite.

4. The range hood according to claim 3, characterized in that: A first outer shell (233) is arranged outside the first winding pole (23), and a second outer shell (243) is arranged outside the second winding pole (24); outlets through which the first rope (25) and the third rope (27) pass through the corresponding outer shells are both at the upper end, and outlets through which the second rope (26) and the fourth rope (28) pass through the corresponding outer shells are both at the lower end.

5. The range hood according to claim 3, characterized in that: The outer circumference of the first winding post (23) is formed with a first thread (231) and a second thread (232), and the outer circumference of the second winding post (24) is formed with a third thread (241) and a fourth thread (242), the first thread (231) and the second thread (232) have opposite rotation directions, and the third thread (241) and the fourth thread (242) have opposite rotation directions; The first rope (25) is wound around the first thread (231), the second rope (26) is wound around the second thread (232), the third rope (27) is wound around the third thread (241), and the fourth rope (28) is wound around the fourth thread (242).

6. The range hood according to claim 1, characterized in that: The motion mechanism further comprises a first pulley (29), a second pulley (210), a third pulley (211) and a fourth pulley (212) all of which are arranged on the plate body (21); the plate body (21) is rectangular, and the pulleys are arranged corresponding to the four corners of the plate body (21); the first rope (25) is wound around the first pulley (29), the second rope (26) is wound around the second pulley (210), the third rope (27) is wound around the third pulley (211), and the fourth rope (28) is wound around the fourth pulley (212).

7. The range hood according to claim 6, characterized in that: The motion mechanism further comprises a first bracket (31), a second bracket (32), a third bracket (33) and a fourth bracket (34) all of which are arranged on the plate body (21); the first pulley (29) is arranged on the first bracket (31); the second pulley (210) is arranged on the second bracket (32); the third pulley (211) is arranged on the third bracket (33); and the fourth pulley (212) is arranged on the fourth bracket (34).

8. The range hood according to claim 6, characterized in that: The motion mechanism further comprises a first guide wheel (213), a second guide wheel (214), a third guide wheel (215) and a fourth guide wheel (216) all of which are arranged on the plate body (21); the first guide wheel (213) is arranged between the first pulley (29) and the first winding post (23); a portion of the first rope (25) between the first pulley (29) and the first winding post (23) is wound around the first guide wheel (213); the second guide wheel (214) is arranged between the second pulley (210) and the first winding post (23); the second pulley (210) and the first winding post (23) are connected to each other. The second rope (26) between the bobbins (23) is partially wound around the second guide wheel (214), the third guide wheel (215) is arranged between the third pulley (211) and the second winding pole (24), the third rope (27) between the third pulley (211) and the second winding pole (24) is partially wound around the third guide wheel (215), the fourth guide wheel (216) is arranged between the fourth pulley (212) and the second winding pole (24), and the fourth rope (28) between the fourth pulley (212) and the second winding pole (24) is partially wound around the fourth guide wheel (216).

9. The range hood according to claim 8, characterized in that: The motion mechanism also includes a fifth bracket (35), a sixth bracket (36), a seventh bracket (37) and an eighth bracket (38) all of which are arranged on the plate body (21); the first guide wheel (213) is arranged on the fifth bracket (35); the second guide wheel (214) is arranged on the sixth bracket (36); the third guide wheel (215) is arranged on the seventh bracket (37); and the fourth guide wheel (216) is arranged on the eighth bracket (38).

10. The range hood according to claim 1, characterized in that: The motion mechanism also includes a first gear assembly for transmitting the torque of the driving mechanism (22) to the first winding rod (23) and a second gear assembly for transmitting the torque of the driving mechanism (22) to the second winding rod (24).

11. The range hood according to claim 10, characterized in that: The driving mechanism (22) comprises an output end (221) in the shape of a screw rod, and the first gear assembly and the second gear assembly respectively comprise a primary gear meshing with the output end (221) and a final gear coaxial with the corresponding winding rod.

12. The range hood according to claim 11, characterized in that: The motion mechanism further comprises a base (223) for arranging each gear and a cover plate (224) for limiting each gear on the base (223); the cover plate (224) is arranged on the base (223); and the output end (221) of the driving mechanism (22) is also located on the inner side of the base (223).

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