Oil screen assembly of range hood and range hood

Abstract

The invention discloses an oil screen assembly of a range hood and the range hood, the oil screen assembly of the range hood comprises an oil screen body, the oil screen body is provided with a turning plate assembly and a plurality of oil smoke sensors uniformly distributed on the oil screen body, the oil smoke sensors are used for detecting the oil smoke concentration of each part of the oil screen body, and the turning plate assembly is arranged on the turning plate assembly. A plurality of smoke inlet holes are formed in the oil screen body, the turning plate assembly comprises a plurality of turning plates, and the turning plates are arranged on one side of the oil screen body and correspond to the smoke inlet holes one to one; the first driving structure is arranged on the oil screen body and is in transmission connection with the turning plate, and the first driving structure can drive the turning plate to swing relative to the oil screen body according to the oil smoke concentration, so that the turning plate can swing between the state that the smoke inlet hole is completely closed and the state that the smoke inlet hole is completely opened.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to an oil screen assembly of a range hood and the range hood. Background Art

[0002] Existing range hoods are generally provided with a flap, which can collect smoke on the one hand and adjust the area of ​​the smoke inlet on the other hand. The structure is relatively bulky, occupies a large space, and is not simple and compact enough.

[0003] Therefore, there is an urgent need for an oil screen assembly for a range hood to solve the above problems. Summary of the invention

[0004] The present invention aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the present invention proposes an oil net assembly for a range hood, which is capable of adjusting the area of ​​the smoke inlet hole, so as to adapt different smoke inlet areas according to the smoke concentration, thereby improving the smoke extraction effect of the range hood. The structure is simple and compact, and there is no need to set up a flap separately.

[0005] The above purpose is achieved through the following technical solutions:

[0006] An oil net assembly of a range hood comprises an oil net body, the oil net body is provided with a flap assembly and a plurality of oil fume sensors uniformly distributed on the oil net body, the oil fume sensors are used to detect the oil fume concentration at various locations of the oil net body, the oil net body is provided with a plurality of smoke inlet holes, and the flap assembly comprises:

[0007] A plurality of flaps are arranged on one side of the oil screen body and are arranged one by one corresponding to the plurality of smoke inlet holes;

[0008] The first driving structure is arranged on the oil net body and is transmission-connected to the flap. The first driving structure can drive the flap to swing relative to the oil net body according to the oil smoke concentration, so that the flap can swing between completely closing the smoke inlet hole and completely opening the smoke inlet hole.

[0009] Optionally, the flap is arranged on the smoke outlet side of the oil screen body.

[0010] Optionally, the flap assembly also includes a second driving structure, the smoke inlet hole is opened on the oil net body along the first direction, the flap is extended along the first direction, the output end of the second driving structure is connected to the flap, and the second driving structure can drive the flap to move between folding and unfolding along the first direction according to the oil smoke concentration. The flap is provided with a first end and a second end relatively arranged along the first direction, and the first end of the flap and / or the second end of the flap is provided with the first driving structure.

[0011] Optionally, the flap is a flexible plate.

[0012] Optionally, the first driving structure includes:

[0013] A first driving motor is arranged on the oil screen body;

[0014] A connecting rod structure is arranged at the output end of the first driving motor and connected to the first end of the flap or the second end of the flap. The first driving motor drives the flap to swing between completely closing the smoke inlet hole and completely opening the smoke inlet hole through the connecting rod structure.

[0015] Optionally, the flap is provided with a first side portion and a second side portion which are arranged opposite to each other along the second direction, the first direction is arranged perpendicular to the second direction, and the connecting rod structure comprises:

[0016] A first connecting rod is installed on the smoke outlet side of the oil screen body, and the first side portion of the flap is movably connected to the first connecting rod;

[0017] A second connecting rod, a first end of which is mounted on an output end of the first driving motor, the first end of the second connecting rod is arranged opposite to the second end of the second connecting rod, and the first driving motor can drive the second end of the second connecting rod to swing relative to the first connecting rod;

[0018] The third connecting rod, the second end of the second connecting rod is movably connected to the third connecting rod, the second side of the flap is movably connected to the third connecting rod, the first side of the flap is arranged opposite to the second side of the flap, when the first driving motor drives the second end of the second connecting rod to swing relative to the first connecting rod, the second connecting rod drives the third connecting rod to move horizontally in a direction close to or away from the first connecting rod, so as to drive the second side of the flap to swing relative to the first connecting rod.

[0019] Optionally, the first end of the second connecting rod is hinged to the first connecting rod, and the output end of the first driving motor passes through the first end of the second connecting rod and the first connecting rod and is connected to the first side of the flap.

[0020] Optionally, a plurality of second connecting rods are provided, and a first end of one of the second connecting rods is mounted on an output end of the first driving motor.

[0021] Optionally, the second driving structure includes:

[0022] The screw-nut pair comprises a second drive motor and a screw connected to each other in a transmission manner, the second drive motor can move along the screw, the plurality of flaps comprise an active flap and a driven flap, the screw is arranged on a first side of the active flap and extends along the first direction, the second drive motor is connected to a first end of the active flap or a second end of the active flap, and the output end of the first drive motor passes through a first end of the second connecting rod and the first connecting rod and is connected to the screw;

[0023] A plurality of slide rails, the second side of the active flap, the first side of the driven flap, and the second side of the driven flap are all provided with the slide rails arranged along the first direction, the second side of the active flap, the first side of the driven flap, and the second side of the driven flap are all slidably connected to the slide rails, and the slide rails are movably connected to the second connecting rod;

[0024] A transmission block is provided on the slide rail on the first side of the driven flap, and the transmission block is slidably connected to the slide rail;

[0025] A transmission rod, the second drive motor and the transmission block are connected through the transmission rod, and the transmission rod can rotate relative to the transmission block.

[0026] Optionally, the midpoint of the flap along the first direction is a fixed midpoint, and the fixed midpoint is fixed on the oil net body. The first telescopic section is between the first end of the flap and the fixed midpoint, and the second telescopic section is between the second end of the flap and the fixed midpoint. The first driving structure and the second driving structure are each provided with two groups. The first end of the flap and the second end of the flap are each provided with a first driving structure to respectively drive the first telescopic section and the second telescopic section to swing relative to the oil net body between completely closing the smoke inlet hole and fully opening the smoke inlet hole. The first end of the flap and the second end of the flap are each provided with a second driving structure to respectively drive the first telescopic section and the second telescopic section to move between folding and unfolding along the first direction.

[0027] Optionally, the oil net body is provided with a first area and a second area which are adjacent to each other, and the flap assembly is provided on both the first area and the second area.

[0028] Optionally, the multiple oil fume sensors include a first oil fume sensor, a second oil fume sensor, a third oil fume sensor and a fourth oil fume sensor, the first direction is the front-to-back direction, the first oil fume sensor is arranged at the front of the first area, the third oil fume sensor is arranged at the rear of the first area, the third oil fume sensor is arranged at the front of the second area, and the fourth oil fume sensor is arranged at the rear of the second area. For the first area, the first driving structure and the second driving structure located at the front drive the first telescopic section to move according to the oil fume concentration detected by the first oil fume sensor, and the first driving structure and the second driving structure located at the rear drive the second telescopic section to move according to the oil fume concentration detected by the second oil fume sensor; for the second area, the first driving structure and the second driving structure located at the front drive the first telescopic section to move according to the oil fume concentration detected by the third oil fume sensor, and the first driving structure and the second driving structure located at the rear drive the second telescopic section to move according to the oil fume concentration detected by the fourth oil fume sensor.

[0029] Optionally, the first direction is the front-to-back direction, the length of the flap when fully extended is W, the first telescopic section is the front half of the flap, the second telescopic section is the back half of the flap, the direction from front to back is positive, and the direction from back to front is negative, the fixed midpoint of the flap is the zero point, the second driving structure can drive the first telescopic section to fold and unfold between a first position, a second position, and a third position, the second driving structure can drive the second telescopic section to fold and unfold between a fourth position, a fifth position, and a sixth position, the first position is located at W / 2 to W / 3, the second position is located at W / 3 to W / 6, the third position is located at W / 6 to 0, the fourth position is located at -W / 2 to -W / 3, the fifth position is located at -W / 3 to -W / 6, and the sixth position is located at -W / 6 to 0.

[0030] Optionally, the flap can swing relative to the oil net body between a first angle level, a second angle level and a third angle level, when the flap is at the first angle level, the angle ɑ between the flap and the oil net body is 0° to 30°, when the flap is at the second angle level, the angle ɑ between the flap and the oil net body is 31° to 60°, when the flap is at the third angle level, the angle ɑ between the flap and the oil net body is 61° to 90°.

[0031] Optionally, the oil fume concentration detected by the first oil fume sensor, the second oil fume sensor, the third oil fume sensor and the fourth oil fume sensor includes a first concentration level, a second concentration level and a third concentration level. When the oil fume concentration detected by the first oil fume sensor, the second oil fume sensor, the third oil fume sensor and the fourth oil fume sensor is the first concentration level, the smoke concentration is 0 mg / m 3 Up to 20 mg / m 3 When the oil smoke concentration detected by the first oil smoke sensor, the second oil smoke sensor, the third oil smoke sensor and the fourth oil smoke sensor is at the second concentration level, the smoke concentration is 21 mg / m 3 Up to 70 mg / m 3 When the oil smoke concentration detected by the first oil smoke sensor, the second oil smoke sensor, the third oil smoke sensor and the fourth oil smoke sensor is at the third concentration level, the smoke concentration is 71 mg / m 3 Up to 100 mg / m 3 .

[0032] Optionally, the flap moves according to the following table based on the oil smoke concentration detected by the first oil smoke sensor, the second oil smoke sensor, the third oil smoke sensor and the fourth oil smoke sensor:

[0033]

[0034] Another aspect of the present invention provides a range hood, comprising a smoke hood, a chassis, a fan and the oil net assembly of the range hood mentioned above, wherein the oil net assembly is installed at the smoke inlet of the smoke hood, the chassis is arranged on the upper side of the smoke hood, and the fan is installed in the chassis.

[0035] Optionally, the fan includes three operating modes: a deceleration speed regulation mode, a mode of maintaining the original speed, and an acceleration speed regulation mode. The operating mode of the fan is operated according to the following table based on the oil fume concentration detected by the first oil fume sensor, the second oil fume sensor, the third oil fume sensor, and the fourth oil fume sensor installed on the oil net assembly:

[0036]

[0037]

[0038] Compared with the prior art, the present invention has at least the following beneficial effects:

[0039] The oil net assembly of the range hood provided by the present invention comprises an oil net body, a flap assembly and a plurality of oil fume sensors uniformly distributed on the oil net body are arranged on the oil net body, the oil fume sensors are used to detect the oil fume concentration at various places of the oil net body, a plurality of smoke inlet holes are opened on the oil net body, and the flap assembly comprises a plurality of flaps and a first driving structure. The plurality of flaps are arranged on one side of the oil net body and are arranged one-to-one corresponding to the plurality of smoke inlet holes. The first driving structure is arranged on the oil net body and is connected to the flap transmission. The first driving structure can drive the flap to swing relative to the oil net body according to the oil fume concentration, so that the flap can swing between completely closing the smoke inlet hole and completely opening the smoke inlet hole, so as to adjust the area of ​​the smoke inlet hole opened, so as to adapt to different smoke inlet areas according to the oil fume concentration, thereby improving the oil fume extraction effect of the range hood, and the structure is simple and compact, and no flap needs to be arranged separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a schematic diagram of the three-dimensional structure of a range hood provided by a specific embodiment of the present invention;

[0041] Figure 2 yes Figure 1 A schematic cross-sectional structure diagram of;

[0042] Figure 3 yes Figure 1 Bottom view of

[0043] Figure 4 : is a schematic diagram of the three-dimensional structure of the oil screen assembly of the range hood provided by a specific embodiment of the present invention (the angle ɑ between the flaps in the first area and the second area relative to the oil screen body is 90°);

[0044] Figure 5 yes Figure 4 Left view of

[0045] Figure 6 yes Figure 4 The main view of

[0046] Figure 7 yes Figure 4 The enlarged view of point A in the middle;

[0047] Figure 8 yes Figure 4 The enlarged view of point B in the middle;

[0048] Fig. 9 : is a schematic diagram of the three-dimensional structure of the oil screen assembly of the range hood provided by a specific embodiment of the present invention (the angle ɑ between the flaps in the first area and the second area relative to the oil screen body is 90°, and the second telescopic sections are both located at the W / 3 position);

[0049] Fig.10 yes Fig. 9 Enlarged view of point C in the middle.

[0050] In the figure:

[0051] 1. Oil net assembly; 11. Oil net body; 10. Smoke inlet; 12. Flap; 121. Active flap; 122. Driven flap; 1200. Fixed midpoint; 1201. First telescopic section; 1202. Second telescopic section; 13. First drive structure; 131. First drive motor; 132. Connecting rod structure; 1321. First connecting rod; 1322. Second connecting rod; 1323. Third connecting rod; 14. Second drive structure; 141. Second drive motor; 142. Transmission rod; 143. Transmission block; 144. Lead screw; 145. Slide rail;

[0052] 2. Smoke hood;

[0053] 3. Chassis;

[0054] 4. Fan;

[0055] A, the first oil smoke sensor; B, the third oil smoke sensor; C, the second oil smoke sensor; D, the fourth oil smoke sensor;

[0056] K1, first area; K2, second area;

[0057] L1, first position; M1, second position; H1, third position; L2, fourth position; M2, fifth position; H2, sixth position;

[0058] L3, first angle level; M3, second angle level; H3, third angle level;

[0059] L0, first concentration level; M0, second concentration level; H3, third concentration level;

[0060] S, deceleration speed regulation mode; K, maintain original speed mode; F, acceleration speed regulation mode. DETAILED DESCRIPTION

[0061] The following examples illustrate the present invention, but the present invention is not limited to these examples. Modifications to the specific embodiments of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed by the present invention.

[0062] Please refer to Figure 1-Figure 10The present invention provides an oil net assembly of a range hood, comprising an oil net body 11, a flap assembly and a plurality of oil fume sensors uniformly distributed on the oil net body 11, the oil fume sensors being used to detect the oil fume concentration at various locations of the oil net body 11, a plurality of smoke inlet holes 10 being provided on the oil net body 11, and a flap assembly comprising a plurality of flaps 12 and a first driving structure 13. The plurality of flaps 12 are provided on one side of the oil net body 11 and are provided one-to-one with the plurality of smoke inlet holes 10. The first driving structure 13 is provided on the oil net body 11 and is transmission-connected to the flap 12, the first driving structure 13 can drive the flap 12 to swing relative to the oil net body 11 according to the oil fume concentration, so that the flap 12 can swing between completely closing the smoke inlet hole 10 and completely opening the smoke inlet hole 10, so as to adjust the area of ​​the smoke inlet hole 10 being opened, so as to adapt different smoke inlet areas according to the oil fume concentration, thereby improving the oil fume absorbing effect of the range hood, and the structure is simple and compact, and no flap is required to be provided separately.

[0063] Optionally, the flap 12 is arranged on the smoke outlet side of the oil net body 11, so that the flap 12 and the first drive structure 13 can be stored in the smoke hood 2 located above the oil net body 11. The oil net body 11 covers the first drive structure 13 and part of the flap 12 to achieve a better aesthetic effect, and the oil stains on the flap 12 and the first drive structure 13 can flow to the upper side of the oil net body 11, and then flow to the oil collecting chamber at the rear of the smoke hood 2, which can prevent the oil stains from dripping onto the stove through the flap 12.

[0064] Optionally, the flap assembly also includes a second driving structure 14, the smoke inlet hole 10 is opened on the oil net body 11 along the first direction, the flap 12 is extended along the first direction, the driving structure includes a second driving motor 141, and the output end of the second driving structure 14 is connected to the flap 12. The second driving structure 14 can drive the flap 12 to move between folding and unfolding along the first direction according to the concentration of oil smoke, so that the flap 12 can adaptively block the corresponding part of the smoke inlet hole 10, thereby adjusting the negative pressure at various locations of the oil net assembly 1, and the flap 12 is provided with a first end and a second end relatively arranged along the first direction, and the first end of the flap 12 and / or the second end of the flap 12 is provided with a first driving structure 13.

[0065] Optionally, the flap 12 is a flexible plate to facilitate the folding and unfolding of the flap 12 .

[0066] Optionally, the flap 12 in the present application adopts a honeycomb curtain, which can be folded and unfolded, has a simple structure, and is easy to install.

[0067] Optionally, the first driving structure 13 includes a first driving motor 131 and a connecting rod structure 132. The first driving motor 131 is disposed on the oil screen body 11. The connecting rod structure 132 is disposed at the output end of the first driving motor 131 and is connected to the first end of the flap 12 or the second end of the flap 12. The first driving motor 131 drives the flap 12 to swing between fully closing the smoke inlet hole 10 and fully opening the smoke inlet hole 10 through the connecting rod structure 132.

[0068] Optionally, the flap 12 is provided with a first side portion and a second side portion which are arranged opposite to each other along the second direction, the first direction is arranged perpendicular to the second direction, and the connecting rod structure 132 includes a first connecting rod 1321, a second connecting rod 1322 and a third connecting rod 1323. The first connecting rod 1321 is installed on the smoke outlet side of the oil net body 11, and the first side portion of the flap 12 is movably connected to the first connecting rod 1321. The first end of the second connecting rod 1322 is installed on the output end of the first driving motor 131, and the first end of the second connecting rod 1322 is arranged opposite to the second end of the second connecting rod 1322, and the first driving motor 131 can drive the second end of the second connecting rod 1322 to swing relative to the first connecting rod 1321. The second end of the second connecting rod 1322 is movably connected to the third connecting rod 1323, the second side of the flap 12 is movably connected to the third connecting rod 1323, the first side of the flap 12 is arranged opposite to the second side of the flap 12, and when the first driving motor 131 drives the second end of the second connecting rod 1322 to swing relative to the first connecting rod 1321, the second connecting rod 1322 drives the third connecting rod 1323 to move linearly in a direction close to or away from the first connecting rod 1321, so as to drive the second side of the flap 12 to swing relative to the first connecting rod 1321, thereby enabling the flap 12 to swing between completely closing the smoke inlet hole 10 and completely opening the smoke inlet hole 10.

[0069] Optionally, the first end of the second connecting rod 1322 is hinged to the first connecting rod 1321, and the output end of the first drive motor 131 passes through the first end of the second connecting rod 1322 and the first connecting rod 1321 and is connected to the first side of the flap 12. The structure is simple and compact and easy to install.

[0070] Optionally, a plurality of second connecting rods 1322 are provided, wherein a first end of one of the second connecting rods 1322 is mounted on an output end of the first driving motor 131 , and the strength of the connecting rod structure 132 is enhanced by providing a plurality of second connecting rods 1322 .

[0071] Optionally, the second drive structure 14 includes a screw 144-nut pair, a plurality of slide rails 145, a transmission block 143 and a transmission rod 142. The screw 144-nut pair includes a second drive motor 141 and a screw 144 that are mutually transmission-connected, the second drive motor 141 can move along the screw 144, the plurality of flaps 12 include an active flap 12112 and a driven flap 12212, the screw 144 is disposed on a first side of the active flap 12112 and extends along a first direction, the second drive motor 141 is connected to a first end of the active flap 12112 or a second end of the active flap 12112, the output end of the first drive motor 131 passes through the first end of the second connecting rod 1322, the first connecting rod 1321 and then is connected to the screw 144, thereby driving the screw 144 to rotate, and thereby enabling the flap 12 to swing relative to the oil net body 11. The second side of the active flap 12112, the first side of the driven flap 12212, and the second side of the driven flap 12212 are all provided with a slide rail 145 arranged along the first direction, and the second side of the active flap 12112, the first side of the driven flap 12212, and the second side of the driven flap 12212 are all slidably connected to the slide rail 145, and the slide rail 145 is movably connected to the second connecting rod 1322. The transmission block 143 is provided on the slide rail 145 located on the first side of the driven flap 12212, and the transmission block 143 is slidably connected to the slide rail 145. The second driving motor 141 and the transmission block 143 are connected through the transmission rod 142, and the transmission rod 142 can rotate relative to the transmission block 143. The second drive motor 141 moves along the lead screw 144, driving the transmission rod 142 to move, and the transmission rod 142 drives the transmission block 143 to move, thereby driving the multiple flaps 12 to be synchronously folded and unfolded. At the same time, since the transmission rod 142 can rotate relative to the transmission block 143, when the first drive motor 131 drives the flap 12 to swing relative to the oil net body 11 through the connecting rod structure 132, the transmission block 143 will not limit the rotation of the transmission rod 142, and the structure is simple and compact.

[0072] Optionally, the midpoint of the flap 12 along the first direction is a fixed midpoint 1200, the fixed midpoint 1200 is fixed on the oil net body 11, the first end of the flap 12 to the fixed midpoint 1200 is a first telescopic section 1201, the second end of the flap 12 to the fixed midpoint 1200 is a second telescopic section 1202, and the first drive structure 13 and the second drive structure 14 are both provided with two groups, and the first end of the flap 12 and the second end of the flap 12 are both provided with a first drive structure 13 to drive the first telescopic section 1201 to drive the first telescopic section 1202 ... 201 and the second telescopic section 1202 swing relative to the oil net body 11 between completely closing the smoke inlet hole 10 and completely opening the smoke inlet hole 10, and the first end of the flap 12 and the second end of the flap 12 are both provided with a second driving structure 14 to respectively drive the first telescopic section 1201 and the second telescopic section 1202 to move between folding and unfolding along the first direction, thereby individually controlling the movement of the first telescopic section 1201 and the second telescopic section 1202, and further adjusting the opening position and opening area of ​​the smoke inlet hole 10 according to the oil smoke concentration.

[0073] Optionally, the oil net body 11 is provided with a first area K1 and a second area K2 which are adjacent to each other, and both the first area K1 and the second area K2 are provided with a flap assembly.

[0074] Optionally, the plurality of oil fume sensors include a first oil fume sensor A, a second oil fume sensor C, a third oil fume sensor B and a fourth oil fume sensor D. The first direction is the front-to-back direction. The first oil fume sensor A is arranged at the front of the first area K1, the third oil fume sensor B is arranged at the rear of the first area K1, the third oil fume sensor B is arranged at the front of the second area K2, and the fourth oil fume sensor D is arranged at the rear of the second area K2. For the first area K1, the first driving structure 13 and the second driving structure 14 located at the front drive the first telescopic section according to the oil fume concentration detected by the first oil fume sensor A. 1201 moves, and the first driving structure 13 and the second driving structure 14 located at the rear drive the second telescopic section 1202 to move according to the oil fume concentration detected by the second oil fume sensor C; for the second area K2, the first driving structure 13 and the second driving structure 14 located at the front drive the first telescopic section 1201 to move according to the oil fume concentration detected by the third oil fume sensor B, and the first driving structure 13 and the second driving structure 14 located at the rear drive the second telescopic section 1202 to move according to the oil fume concentration detected by the fourth oil fume sensor D, so as to adjust the position and opening area of ​​the smoke inlet in a targeted manner.

[0075] Optionally, the first direction is the front-to-back direction, the length of the flap 12 when fully extended is W, the first telescopic section 1201 is the front half of the flap 12, the second telescopic section 1202 is the back half of the flap 12, the direction from front to back is positive, the direction from back to front is negative, the fixed midpoint 1200 of the flap 12 is the zero point, the second driving structure 14 can drive the first telescopic section 1201 to collapse and expand between the first position L1, the second position M1, and the third position, and the second driving structure 14 can drive The movable second telescopic section 1202 is folded and unfolded between the fourth position L2, the fifth position M2 and the sixth position H2, the first position L1 is located at W / 2 to W / 3, the second position M1 is located at W / 3 to W / 6, the third position is located at W / 6 to 0, the fourth position L2 is located at -W / 2 to -W / 3, the fifth position M2 is located at -W / 3 to -W / 6, and the sixth position H2 is located at -W / 6 to 0, so as to fine-tune the position of the smoke inlet hole 10 adjusted by the flap 12.

[0076] Optionally, the flap 12 can swing relative to the oil net body 11 between a first gear, a second gear and a third gear. When the flap 12 is in the first gear, the angle ɑ between the flap 12 and the oil net body 11 is 0° to 30°. When the flap 12 is in the second gear, the angle ɑ between the flap 12 and the oil net body 11 is 31° to 60°. When the flap 12 is in the third gear, the angle ɑ between the flap 12 and the oil net body 11 is 61° to 90°, so as to adapt to different oil fume concentrations.

[0077] Optionally, the oil fume concentrations detected by the first oil fume sensor A, the second oil fume sensor C, the third oil fume sensor B and the fourth oil fume sensor D include a first concentration level L0, a second concentration level M0 and a third concentration level H3. When the oil fume concentration detected by the first oil fume sensor A, the second oil fume sensor C, the third oil fume sensor B and the fourth oil fume sensor D is the first concentration level L0, the smoke concentration is 0 mg / m3 to 20 mg / m3. When the oil fume concentration detected by the first oil fume sensor A, the second oil fume sensor C, the third oil fume sensor B and the fourth oil fume sensor D is the second concentration level M0, the smoke concentration is 21 mg / m3 to 70 mg / m3. When the oil fume concentration detected by the first oil fume sensor A, the second oil fume sensor C, the third oil fume sensor B and the fourth oil fume sensor D is the third concentration level H3, the smoke concentration is 71 mg / m3 to 100 mg / m3. The oil fume concentrations detected by the first oil fume sensor A, the second oil fume sensor C, the third oil fume sensor B and the fourth oil fume sensor D are graded so that the flap 12 can move according to different levels of oil fume concentrations.

[0078] Optionally, the flap 12 moves according to the following table based on the oil fume concentration detected by the first oil fume sensor A, the second oil fume sensor C, the third oil fume sensor B and the fourth oil fume sensor D:

[0079]

[0080]

[0081] On the other hand, the present invention provides a range hood, comprising a fume hood 2, a chassis 3, a fan 4 and the above-mentioned oil net assembly 1 of the range hood, the oil net assembly 1 is installed at the smoke inlet of the fume hood 2, the chassis 3 is arranged on the upper side of the fume hood 2, and the fan 4 is installed in the chassis 3.

[0082] Optionally, the fan 4 includes three operating modes: a deceleration speed regulation mode S, a maintaining original speed mode K, and an acceleration speed regulation mode F. The operating mode of the fan 4 is operated according to the fume concentration detected by the first fume sensor A, the second fume sensor C, the third fume sensor B, and the fourth fume sensor D according to the following table:

[0083]

[0084]

[0085] It should be noted that the deceleration speed regulation mode S of the fan 4 is that the fan 4 decelerates at a preset deceleration, and the acceleration speed regulation mode F of the fan 4 is that the fan 4 accelerates at a preset acceleration.

[0086] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An oil screen assembly for a range hood, characterized in that: The oil net body (11) comprises an oil net body (11), the oil net body (11) is provided with a flap assembly and a plurality of oil fume sensors evenly distributed on the oil net body (11), the oil fume sensors are used to detect the oil fume concentration at various locations of the oil net body (11), the oil net body (11) is provided with a plurality of smoke inlet holes (10), and the flap assembly comprises: A plurality of flaps (12) are arranged on one side of the oil net body (11) and are arranged in one-to-one correspondence with the plurality of smoke inlet holes (10); A first driving structure (13) is arranged on the oil net body (11) and is drivingly connected to the flap (12); the first driving structure (13) can drive the flap (12) to swing relative to the oil net body (11) according to the oil smoke concentration, so that the flap (12) can swing between completely closing the smoke inlet hole (10) and completely opening the smoke inlet hole (10).

2. The oil screen assembly of the range hood according to claim 1, characterized in that: The flap (12) is arranged on the smoke outlet side of the oil screen body (11).

3. The oil screen assembly of the range hood according to claim 2, characterized in that: The flap assembly also includes a second driving structure (14); the smoke inlet hole (10) is opened on the oil net body (11) along a first direction; the flap (12) is extended along the first direction; an output end of the second driving structure (14) is connected to the flap (12); the second driving structure (14) can drive the flap (12) to move between folding and unfolding along the first direction according to the oil smoke concentration; the flap (12) is provided with a first end and a second end that are relatively arranged along the first direction; the first end of the flap (12) and / or the second end of the flap (12) are provided with the first driving structure (13).

4. The oil screen assembly of the range hood according to claim 3, characterized in that: The flap (12) is a flexible plate.

5. The oil screen assembly of the range hood according to claim 3, characterized in that: The first driving structure (13) comprises: A first driving motor (131) is arranged on the oil screen body (11); A connecting rod structure (132) is arranged at the output end of the first drive motor (131) and is connected to the first end of the flap (12) or the second end of the flap (12); the first drive motor (131) drives the flap (12) to swing between completely closing the smoke inlet hole (10) and completely opening the smoke inlet hole (10) through the connecting rod structure (132).

6. The oil screen assembly of the range hood according to claim 5, characterized in that: The flap (12) is provided with a first side portion and a second side portion which are arranged opposite to each other along a second direction, the first direction is arranged perpendicular to the second direction, and the connecting rod structure (132) comprises: A first connecting rod (1321) is installed on the smoke outlet side of the oil screen body (11), and a first side portion of the flap (12) is movably connected to the first connecting rod (1321); a second connecting rod (1322), a first end of which is mounted on the output end of the first driving motor (131), the first end of the second connecting rod (1322) being arranged opposite to the second end of the second connecting rod (1322), and the first driving motor (131) being capable of driving the second end of the second connecting rod (1322) to swing relative to the first connecting rod (1321); A third connecting rod (1323), the second end of the second connecting rod (1322) is movably connected to the third connecting rod (1323), the second side of the flap (12) is movably connected to the third connecting rod (1323), the first side of the flap (12) is arranged opposite to the second side of the flap (12), when the first driving motor (131) drives the second end of the second connecting rod (1322) to swing relative to the first connecting rod (1321), the second connecting rod (1322) drives the third connecting rod (1323) to move in a direction close to or away from the first connecting rod (1321), so as to drive the second side of the flap (12) to swing relative to the first connecting rod (1321).

7. The oil screen assembly of the range hood according to claim 6, characterized in that: The first end of the second connecting rod (1322) is hinged to the first connecting rod (1321), and the output end of the first driving motor (131) passes through the first end of the second connecting rod (1322) and the first connecting rod (1321) and is connected to the first side of the flap (12).

8. The oil screen assembly of the range hood according to claim 7, characterized in that: A plurality of second connecting rods (1322) are provided, and a first end of one of the second connecting rods (1322) is mounted on the output end of the first driving motor (131).

9. The oil screen assembly of a range hood according to claim 7, characterized in that: The second driving structure (14) comprises: A screw-nut pair, comprising a second drive motor (141) and a screw (144) which are mutually transmission-connected, the second drive motor (141) being capable of moving along the screw (144), the plurality of flaps (12) comprising an active flap (121) and a passive flap (122), the screw (144) being arranged on a first side of the active flap (12) and extending along the first direction, the second drive motor (141) being connected to a first end of the active flap (121) or a second end of the active flap (121), and the output end of the first drive motor (131) passing through a first end of the second connecting rod (1322), the first connecting rod (1321), and then connected to the screw (144); A plurality of slide rails (145), the second side of the active flap (121), the first side of the driven flap (122), and the second side of the driven flap (122) are all provided with the slide rails (145) arranged along the first direction, the second side of the active flap (121), the first side of the driven flap (122), and the second side of the driven flap (122) are all slidably connected to the slide rails (145), and the slide rails (145) are movably connected to the second connecting rod (1322); A transmission block (143), which is disposed on the slide rail (145) on the first side of the driven flap (122), and the transmission block (143) is slidably connected to the slide rail (145); A transmission rod (142), the second drive motor (141) and the transmission block (143) are connected via the transmission rod (142), and the transmission rod (142) can rotate relative to the transmission block (143).

10. The oil screen assembly of the range hood according to claim 9, characterized in that: The midpoint of the flap (12) along the first direction is a fixed midpoint (1200), the fixed midpoint (1200) is fixedly arranged on the oil net body (11), the first end of the flap (12) and the fixed midpoint (1200) are between a first telescopic section (1201), the second end of the flap (12) and the fixed midpoint (1200) are between a second telescopic section (1202), the first driving structure (13) and the second driving structure (14) are both provided with two groups, the first end of the flap (12) and the flap (12) are The first driving structure (13) is disposed at the second end of each of the flaps (12) and the second end of each of the flaps (12) to respectively drive the first telescopic section (1201) and the second telescopic section (1202) to swing between completely closing the smoke inlet hole (10) and completely opening the smoke inlet hole (10) relative to the oil net body (11); and the second driving structure (14) is disposed at the first end of each of the flaps (12) and the second end of each of the flaps (12) to respectively drive the first telescopic section (1201) and the second telescopic section (1202) to move between folding and unfolding along the first direction.

11. The oil screen assembly of a range hood according to claim 10, characterized in that: The oil net body (11) is provided with a first area (K1) and a second area (K2) which are arranged adjacent to each other, and the flap assembly is provided on both the first area (K1) and the second area (K2).

12. The oil screen assembly of a range hood according to claim 11, characterized in that: The plurality of oil smoke sensors include a first oil smoke sensor (A), a second oil smoke sensor (C), a third oil smoke sensor (B) and a fourth oil smoke sensor (D); the first direction is a front-to-back direction; the first oil smoke sensor (A) is arranged at the front of the first area (K1); the third oil smoke sensor (C) is arranged at the rear of the first area (K1); the third oil smoke sensor (B) is arranged at the front of the second area (K2); and the fourth oil smoke sensor (D) is arranged at the rear of the second area (K2); for the first area (K1), the first driving structure (13) and the second driving structure (14) located at the front detect oil smoke according to the first oil smoke sensor (A). The oil fume concentration of the first telescopic section (1201) is driven to move, and the first driving structure (13) and the second driving structure (14) located at the rear drive the second telescopic section (1201) to move according to the oil fume concentration detected by the second oil fume sensor (C); for the second area (K2), the first driving structure (13) and the second driving structure (14) located at the front drive the first telescopic section (1201) to move according to the oil fume concentration detected by the third oil fume sensor (B), and the first driving structure (13) and the second driving structure (14) located at the rear drive the second telescopic section (1202) to move according to the oil fume concentration detected by the fourth oil fume sensor (D).

13. The oil screen assembly of a range hood according to claim 12, characterized in that: The first direction is the front-to-back direction, the fully extended length of the flap (12) is W, the first telescopic section (1201) is the front half of the flap (12), the second telescopic section (1202) is the back half of the flap (12), the direction from front to back is positive, and the direction from back to front is negative, the fixed midpoint (1200) of the flap (12) is the zero point, and the second driving structure (14) is capable of driving the first telescopic section (1201) to fold and unfold between a first position (L1), a second position (M1), and a third position (H1), The second driving structure (14) is capable of driving the second telescopic section (1202) to fold and unfold between a fourth position (L2), a fifth position (M2) and a sixth position (H2), the first position (L1) is located at W / 2 to W / 3, the second position (M1) is located at W / 3 to W / 6, the third position (H1) is located at W / 6 to 0, the fourth position (L2) is located at -W / 2 to -W / 3, the fifth position (M2) is located at -W / 3 to -W / 6, and the sixth position (H2) is located at -W / 6 to 0.

14. The oil screen assembly of a range hood according to claim 13, characterized in that: The flap (12) can swing relative to the oil net body (11) between a first angle level (L3), a second angle level (M3) and a third angle level (H3); when the flap (12) is at the first angle level (L3), an angle ɑ between the flap (12) and the oil net body (11) is between 0° and 30°; when the flap (12) is at the second angle level (M3), an angle ɑ between the flap (12) and the oil net body (11) is between 31° and 60°; and when the flap (12) is at the third angle level (H3), an angle ɑ between the flap (12) and the oil net body (11) is between 61° and 90°.

15. The oil screen assembly of a range hood according to claim 14, characterized in that: The oil smoke concentration detected by the first oil smoke sensor (A), the second oil smoke sensor (C), the third oil smoke sensor (B) and the fourth oil smoke sensor (D) includes a first concentration level (L0), a second concentration level (M0) and a third concentration level (H0). When the oil smoke concentration detected by the first oil smoke sensor (A), the second oil smoke sensor (C), the third oil smoke sensor (B) and the fourth oil smoke sensor (D) is the first concentration level (L0), the smoke concentration is 0 mg / m 3 Up to 20 mg / m 3 When the oil smoke concentration detected by the first oil smoke sensor (A), the second oil smoke sensor (C), the third oil smoke sensor (B) and the fourth oil smoke sensor (D) is the second concentration level (M0), the smoke concentration is 21 mg / m 3 Up to 70 mg / m 3 When the oil smoke concentration detected by the first oil smoke sensor (A), the second oil smoke sensor (C), the third oil smoke sensor (B) and the fourth oil smoke sensor (D) is the third concentration level (H0), the smoke concentration is 71 mg / m 3 Up to 100 mg / m 3 .

16. The oil screen assembly of a range hood according to claim 15, characterized in that: The flap (12) moves according to the following table based on the oil smoke concentration detected by the first oil smoke sensor (A), the second oil smoke sensor (C), the third oil smoke sensor (B) and the fourth oil smoke sensor (D):

17. A range hood, characterized in that: The range hood comprises a smoke hood (2), a chassis (3), a fan (4), and an oil net assembly (1) of a range hood according to any one of claims 1 to 16, wherein the oil net assembly (1) is installed at the smoke inlet of the smoke hood (2), the chassis (3) is arranged on the upper side of the smoke hood (2), and the fan (4) is installed in the chassis (3).

18. The range hood according to claim 17, characterized in that: The fan (4) includes three operating modes: a deceleration speed regulation mode (S), a mode of maintaining the original speed (K), and an acceleration speed regulation mode (F). The operating mode of the fan (4) is operated according to the following table based on the oil smoke concentration detected by the first oil smoke sensor (A), the second oil smoke sensor (C), the third oil smoke sensor (B), and the fourth oil smoke sensor (D) installed on the oil net assembly (1):

Images