Oil screen assembly of range hood and range hood

Abstract

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 evenly distributed on the oil screen body, and the oil smoke sensors are used for detecting the oil smoke concentration of all positions of the oil screen body. 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 utility model relates to kitchen electrical technology field especially, relates to an oil screen subassembly and range hood of oil fume extractor. BACKGROUND

[0002] The existing range hood generally is provided with the flap, one aspect realizes the smoke, the other aspect can adjust the area of the smoke inlet, its structure is relatively big, occupies the space bigger, the structure is not enough simple and compact.

[0003] Therefore, the oil screen subassembly of oil fume extractor is urgently needed to solve the above problems. INVENTION CONTENTS

[0004] The utility model aims at at least in a certain extent solves one of the problems existing in prior art related, and this utility model provides an oil screen subassembly of oil fume extractor can adjust the area of smoke hole opening, thereby according to the oil fume concentration adaptation different smoke area, thereby improve the oil fume effect of oil fume extractor, and simple and compact structure, need not set up flap again.

[0005] The above-mentioned purpose is realized by the following technical schemes:

[0006] An oil screen subassembly of oil fume extractor, including oil screen body, be provided with flap subassembly and the oil fume sensor of uniform distribution on the oil screen body on the oil screen body, the oil fume sensor is used to detect the oil fume concentration of the oil screen body everywhere, be provided with multiple smoke holes on the oil screen body, the flap subassembly includes:

[0007] Multiple flaps are set up in one side of the oil screen body and are set up with multiple the smoke hole one to one correspondence;

[0008] First drive structure is set up on the oil screen body and is driven connection with the flap, and the first drive structure can drive the flap swing relative to the oil screen body according to the oil fume concentration, so that the flap can swing between completely closing the smoke hole and completely opening the smoke hole.

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

[0010] Optionally, the flap subassembly further includes second drive structure, the smoke hole is set up on the oil screen body along the first direction, the flap is set up along the first direction, the output end of the second drive structure is connected with the flap, and the second drive structure can drive the flap to move between the folding and unfolding along the first direction according to the oil fume concentration, the first end portion and the second end portion of relatively arranged are set up along the first direction in the flap, and the first end portion of the flap and / or the second end portion of the flap is provided with the first drive structure.

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

[0012] Optionally, the first driving structure comprises:

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

[0014] a connecting rod structure arranged at an output end of the first driving motor and connected with a first end of the flap or a second end of the flap, the first driving motor driving the flap to swing between fully closing the smoke inlet hole and fully opening the smoke inlet hole through the connecting rod structure.

[0015] Optionally, the flap is provided with a first side and a second side arranged oppositely in a second direction, the first direction being arranged perpendicularly to the second direction, and the connecting rod structure comprises:

[0016] a first connecting rod mounted at a smoke outlet side of the oil screen body, the first side of the flap being movably connected with the first connecting rod;

[0017] a second connecting rod, a first end of the second connecting rod being mounted at the output end of the first driving motor, the first end of the second connecting rod being arranged oppositely to a second end of the second connecting rod, the first driving motor being capable of driving the second end of the second connecting rod to swing relative to the first connecting rod;

[0018] a third connecting rod, the second end of the second connecting rod being movably connected with the third connecting rod, the second side of the flap being movably connected with the third connecting rod, the first side of the flap being arranged oppositely 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 translate in a direction of approaching or moving 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 with the first connecting rod, and the output end of the first driving motor passes through the first end of the second connecting rod and is connected with the first side of the flap after passing through the first connecting rod.

[0020] Optionally, the second connecting rod is provided with a plurality of second connecting rods, a first end of one of the second connecting rods being mounted at the output end of the first driving motor.

[0021] Optionally, the second driving structure comprises:

[0022] A screw nut pair includes a second driving motor and a screw rod connected with each other in transmission, the second driving motor is capable of moving along the screw rod, a plurality of the turning plates include a driving turning plate and a driven turning plate, the screw rod is arranged on a first side of the driving turning plate and extends along the first direction, the second driving motor is connected with a first end of the driving turning plate or a second end of the driving turning plate, an output end of the first driving motor is connected with the screw rod through a first end of the second connecting rod and a first connecting rod;

[0023] A plurality of slide rails are arranged on the second side of the driving turning plate, the first side of the driven turning plate and the second side of the driven turning plate along the first direction, and the second side of the driving turning plate, the first side of the driven turning plate and the second side of the driven turning plate are slidably connected with the slide rails, and the slide rails are movably connected with the second connecting rod;

[0024] A transmission block is arranged on the slide rail on the first side of the driven turning plate, and the transmission block is slidably connected with the slide rail;

[0025] A transmission rod is connected between the second driving motor and the transmission block, and the transmission rod is capable of rotating relative to the transmission block.

[0026] Optionally, a midpoint of the turning plate along the first direction is a fixed midpoint, the fixed midpoint is fixedly arranged on the oil screen body, a first telescopic section is between the first end of the turning plate and the fixed midpoint, a second telescopic section is between the second end of the turning plate and the fixed midpoint, the first driving structure and the second driving structure are both provided in two groups, the first end of the turning plate and the second end of the turning plate are both provided with a first driving structure to respectively drive the first telescopic section and the second telescopic section to swing relative to the oil screen body between completely closing the smoke inlet hole and completely opening the smoke inlet hole, and the first end of the turning plate and the second end of the turning plate are both provided with a second driving structure to respectively drive the first telescopic section and the second telescopic section to move along the first direction between folding and unfolding.

[0027] Optionally, a first region and a second region are arranged adjacent to each other on the oil screen body, and the first region and the second region are both provided with the turning plate assembly.

[0028] Optionally, the plurality of oil fume sensors comprises 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 a front-rear direction, the front part of the first area is provided with the first oil fume sensor, the rear part of the first area is provided with the third oil fume sensor, the front part of the second area is provided with the third oil fume sensor, and the rear part of the second area is provided with the fourth oil fume sensor, for the first area, the first driving structure and the second driving structure located at the front part 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 part 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 part 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 part 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 a front-rear direction, the length of the fully unfolded flap is W, the first telescopic section is the front half of the flap, the second telescopic section is the rear half of the flap, the direction from front to rear is positive, the direction from rear to front is negative, the fixed midpoint of the flap is zero, 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 between a first angle level, a second angle level and a third angle level relative to the oil screen body, when the flap is at the first angle level, the included angle a between the flap and the oil screen body is 0° to 30°, when the flap is at the second angle level, the included angle a between the flap and the oil screen body is 31° to 60°, and when the flap is at the third angle level, the included angle a between the flap and the oil screen body is 61° to 90°.

[0031] Optionally, the first oil fume sensor, the second oil fume sensor, the third oil fume sensor and the fourth oil fume sensor detect the oil fume concentration including a first concentration level, a second concentration level and a third concentration level, when the first oil fume sensor, the second oil fume sensor, the third oil fume sensor and the fourth oil fume sensor detect the oil fume concentration as the first concentration level, the smoke concentration is 0mg / m 3 to 20mg / m 3 , when the first oil fume sensor, the second oil fume sensor, the third oil fume sensor and the fourth oil fume sensor detect the oil fume concentration as the second concentration level, the smoke concentration is 21mg / m 3 to 70mg / m 3 , when the first oil fume sensor, the second oil fume sensor, the third oil fume sensor and the fourth oil fume sensor detect the oil fume concentration as the third concentration level, the smoke concentration is 71mg / m 3 to 100mg / m 3 .

[0032] Optionally, the flap moves according to 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 according to the following table:

[0033]

[0034] The utility model discloses a kind of range hood, including smoke collecting hood, machine case, fan and the oil screen assembly of above-mentioned range hood, the oil screen assembly is installed at the smoke inlet of the smoke collecting hood, the machine case is arranged on the smoke collecting hood upside, the fan is installed in the machine case.

[0035] Optionally, the fan includes three kinds of operating modes of speed reduction speed regulation mode, original rotating speed maintaining mode and acceleration speed regulation mode, the operating mode of the fan moves according to 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 screen assembly according to the following table:

[0036]

[0037]

[0038] Compared with prior art, the utility model at least includes following beneficial effects:

[0039] The oil net assembly of the range hood provided by the utility model, comprising an oil net body, a flap assembly and a plurality of oil fume sensors uniformly arranged on the oil net body are arranged on the oil net body, the oil fume sensors are used for detecting the oil fume concentration of each part of the oil net body, a plurality of smoke inlets are arranged on the oil net body, 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 in one-to-one correspondence with the plurality of smoke inlets. The first driving structure is arranged on the oil net body and is in transmission connection with the flaps, and the first driving structure can drive the flaps to swing relative to the oil net body according to the oil fume concentration, so that the flaps can swing between completely closing the smoke inlets and completely opening the smoke inlets, so as to adjust the area of the smoke inlets opened, so as to adapt to different smoke inlet areas according to the oil fume concentration, so as to improve the oil fume suction effect of the range hood, and the structure is simple and compact, and the flaps do not need to be arranged additionally. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is a three-dimensional structural schematic view of the range hood provided by the utility model embodiment;

[0041] Figure 2 is Figure 1 a sectional view structural schematic view of the range hood provided by the utility model embodiment;

[0042] Figure 3 is Figure 1 a bottom view of the range hood provided by the utility model embodiment;

[0043] Figure 4 is a three-dimensional structural schematic view of the oil net assembly of the range hood provided by the utility model embodiment (the included angle α between the flaps in the first area and the second area and the oil net body is 90°);

[0044] Figure 5 is Figure 4 a left view of the range hood provided by the utility model embodiment;

[0045] Figure 6 is Figure 4 a front view of the range hood provided by the utility model embodiment;

[0046] Figure 7 is Figure 4 an enlarged view of A in the range hood provided by the utility model embodiment;

[0047] Figure 8 is Figure 4 an enlarged view of B in the range hood provided by the utility model embodiment;

[0048] Figure 9 is a three-dimensional structural schematic view of the oil net assembly of the range hood provided by the utility model embodiment (the included angle α between the flaps in the first area and the second area and the oil net body is 90°, and the second telescopic sections are all located at W / 3 positions);

[0049] Figure 10 is Figure 9 an enlarged view of C in the range hood provided by the utility model embodiment.

[0050] In the figure:

[0051] 1, oil screen assembly; 11, oil screen body; 10, smoke inlet hole; 12, flap; 121, active flap; 122, passive flap; 1200, fixed midpoint; 1201, first telescopic section; 1202, second telescopic section; 13, first driving structure; 131, first driving motor; 132, connecting rod structure; 1321, first connecting rod; 1322, second connecting rod; 1323, third connecting rod; 14, second driving structure; 141, second driving motor; 142, transmission rod; 143, transmission block; 144, lead screw; 145, sliding rail;

[0052] 2, smoke collecting cover;

[0053] 3, machine case;

[0054] 4, fan;

[0055] A, first oil fume sensor; B, third oil fume sensor; C, second oil fume sensor; D, fourth oil fume 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, speed reduction mode; K, keep original speed mode; F, speed up mode. DETAILED DESCRIPTION

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

[0062] Please refer to Figures 1-10The utility model provides a kind of oil fume absorber's oil screen assembly, including oil screen body 11, oil screen body 11 is provided with flap assembly and is uniformly distributed on the multiple oil fume sensors of oil screen body 11, oil fume sensor is used to detect the oil fume concentration of everywhere of oil screen body 11, multiple smoke inlets 10 are opened in oil screen body 11, flap assembly includes multiple flaps 12 and first drive structure 13.Multiple flaps 12 are set in the side of oil screen body 11 and are set corresponding with multiple smoke inlets 10 one by one.First drive structure 13 is set in oil screen body 11 and is transmissionally connected with flap 12, first drive structure 13 can drive flap 12 to swing relative to oil screen body 11 according to oil fume concentration, so that flap 12 can swing between completely closing smoke inlet 10 and completely opening smoke inlet 10, to adjust the area that smoke inlet 10 is opened, to adapt to different smoke inlet area according to oil fume concentration, to improve the oil fume effect of oil fume absorber, and structure is simple and compact, without flap to set up additionally.

[0063] Optionally, flap 12 is set in the smoke outlet side of oil screen body 11, so as to accommodate flap 12 and first drive structure 13 in the smoke collecting cover 2 located above oil screen body 11, oil screen body 11 shields first drive structure 13 and part of flap 12, to play better aesthetic effect, and the oil stains on flap 12 and first drive structure 13 can flow to the upper side of oil screen body 11, and then flow into the oil collecting cavity in the rear of smoke collecting cover 2, to prevent oil stains from dripping on the cooking platform via flap 12.

[0064] Optionally, flap assembly further includes second drive structure 14, smoke inlet 10 is opened in oil screen body 11 along first direction, flap 12 is set along first direction, drive structure includes second drive motor 141, the output end of second drive structure 14 is connected with flap 12, second drive structure 14 can drive flap 12 to move between folding and unfolding along first direction according to oil fume concentration, so that flap 12 can adaptively shield corresponding part of smoke inlet 10, to adjust the negative pressure of each part of oil screen assembly 1, flap 12 is provided with oppositely arranged first end and second end along first direction, the first end of flap 12 and / or the second end of flap 12 is provided with first drive structure 13.

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

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

[0067] Optionally, the first driving structure 13 comprises a first driving motor 131 and a connecting rod structure 132. The first driving motor 131 is arranged on the oil screen body 11. The connecting rod structure 132 is arranged at the output end of the first driving motor 131 and connected with the first end of the flap 12 or the second end of the flap 12, and the first driving motor 131 drives the flap 12 to swing between the completely closed smoke inlet hole 10 and the completely opened smoke inlet hole 10 through the connecting rod structure 132.

[0068] Optionally, the flap 12 is provided with oppositely arranged first and second sides in the second direction, the first direction is arranged perpendicularly to the second direction, and the connecting rod structure 132 comprises a first connecting rod 1321, a second connecting rod 1322 and a third connecting rod 1323. The first connecting rod 1321 is installed at the smoke outlet side of the oil screen body 11, and the first side of the flap 12 is movably connected with the first connecting rod 1321. The first end of the second connecting rod 1322 is installed at the output end of the first driving motor 131, the first end of the second connecting rod 1322 is oppositely arranged 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 with the third connecting rod 1323, the second side of the flap 12 is movably connected with the third connecting rod 1323, the first side of the flap 12 is oppositely arranged 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 translate in the direction of approaching or moving 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, and further enable the flap 12 to swing between the completely closed smoke inlet hole 10 and the completely opened smoke inlet hole 10.

[0069] Optionally, the first end of the second connecting rod 1322 is hingedly connected with the first connecting rod 1321, and the output end of the first driving motor 131 is connected with the first side of the flap 12 after penetrating through the first end of the second connecting rod 1322 and the first connecting rod 1321, so that the structure is simple and compact and easy to install.

[0070] Optionally, the second connecting rod 1322 is provided with a plurality of second connecting rods 1322, one of which is installed at the output end of the first driving motor 131, and the plurality of second connecting rods 1322 are arranged to strengthen the strength of the connecting rod structure 132.

[0071] Optionally, the second driving structure 14 comprises a screw rod 144 nut pair, a plurality of slide rails 145, a transmission block 143 and a transmission rod 142. The screw rod 144 nut pair comprises a second driving motor 141 and a screw rod 144 in transmission connection with each other, the second driving motor 141 can move along the screw rod 144, the plurality of flaps 12 comprises a driving flap 12112 and a driven flap 12212, the screw rod 144 is arranged on the first side of the driving flap 12112 and extends in the first direction, the second driving motor 141 is connected with the first end of the driving flap 12112 or the second end of the driving flap 12112, the output end of the first driving motor 131 passes through the first end of the second connecting rod 1322, the first connecting rod 1321 and is connected with the screw rod 144, so as to drive the screw rod 144 to rotate, thereby enabling the flap 12 to swing relative to the oil screen body 11. The second side of the driving flap 12112, the first side of the driven flap 12212 and the second side of the driven flap 12212 are all provided with slide rails 145 arranged in the first direction, the second side of the driving flap 12112, the first side of the driven flap 12212 and the second side of the driven flap 12212 are all in sliding connection with the slide rails 145, and the slide rails 145 are in activity connection with the second connecting rod 1322. The transmission block 143 is arranged on the slide rail 145 on the first side of the driven flap 12212, and the transmission block 143 is in sliding connection with 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 driving motor 141 moves along the screw rod 144, drives the transmission rod 142 to move, and the transmission rod 142 drives the transmission block 143 to move, thereby driving the plurality of 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 driving motor 131 drives the flap 12 to swing relative to the oil screen 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 in the first direction is a fixed midpoint 1200, the fixed midpoint 1200 is fixedly arranged on the oil screen 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, 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 second end of the flap 12 are both provided with a first driving structure 13 to drive the first telescopic section 1201 and the second telescopic section 1202 to swing relative to the oil screen body 11 between fully closing the smoke inlet hole 10 and fully opening the smoke inlet hole 10, respectively, 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 drive the first telescopic section 1201 and the second telescopic section 1202 to move in the first direction between folding and unfolding, thereby separately controlling the movement of the first telescopic section 1201 and the second telescopic section 1202, and further adjusting the position and opening area of the smoke inlet hole 10 according to the oil smoke concentration.

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

[0074] Optionally, the plurality of oil fume sensors includes 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-back direction, the front part of the first region K1 is provided with the first oil fume sensor A, the rear part of the first region K1 is provided with the third oil fume sensor B, the front part of the second region K2 is provided with the third oil fume sensor B, and the rear part of the second region K2 is provided with the fourth oil fume sensor D, for the first region K1, the first driving structure 13 and the second driving structure 14 located at the front part drive the first telescopic section 1201 to move according to the oil smoke concentration detected by the first oil fume sensor A, and the first driving structure 13 and the second driving structure 14 located at the rear part drive the second telescopic section 1202 to move according to the oil smoke concentration detected by the second oil fume sensor C; for the second region K2, the first driving structure 13 and the second driving structure 14 located at the front part drive the first telescopic section 1201 to move according to the oil smoke 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 part drive the second telescopic section 1202 to move according to the oil smoke concentration detected by the fourth oil fume sensor D, so as to adjust the position and opening area of the smoke inlet hole.

[0075] Optionally, the first direction is a front-rear direction, the length of the fully unfolded flap 12 is W, the first telescopic section 1201 is the front half of the flap 12, the second telescopic section 1202 is the rear half of the flap 12, the direction from front to rear is positive, the direction from rear to front is negative, the fixed midpoint 1200 of the flap 12 is zero, the second driving structure 14 can drive the first telescopic section 1201 to fold and unfold between the first position L1, the second position M1 and the third position, the second driving structure 14 can drive the second telescopic section 1202 to fold and unfold 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 finely adjust the position of the flap 12 relative to the oil fume hole 10.

[0076] Optionally, the flap 12 can swing relative to the oil screen body 11 between a first gear, a second gear and a third gear, when the flap 12 is in the first gear, the included angle a between the flap 12 and the oil screen body 11 is 0° to 30°, when the flap 12 is in the second gear, the included angle a between the flap 12 and the oil screen body 11 is 31° to 60°, and when the flap 12 is in the third gear, the included angle a between the flap 12 and the oil screen 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 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 the first concentration level L0, the smoke concentration is 0mg / m3 to 20mg / m3, when 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 the second concentration level M0, the smoke concentration is 21mg / m3 to 70mg / m3, and when 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 the third concentration level H3, the smoke concentration is 71mg / m3 to 100mg / 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 classified, so that the flap 12 can move according to different levels of oil fume concentration.

[0078] Optionally, the flap 12 moves according to 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 according to the following table:

[0079]

[0080]

[0081] The utility model discloses a kind of range hood, including smoke collecting hood 2, machine box 3, fan 4 and the oil screen assembly 1 of above-mentioned range hood, oil screen assembly 1 is installed at the smoke inlet of smoke collecting hood 2, machine box 3 is set on the upside of smoke collecting hood 2, fan 4 is installed in machine box 3.

[0082] Optionally, fan 4 includes three kinds of operating modes of speed reduction speed regulation mode S, keep original speed mode K and acceleration speed regulation mode F, the operating mode of fan 4 moves according to 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 according to the following table:

[0083]

[0084]

[0085] It needs to be explained that the speed reduction speed regulation mode S of fan 4 is that fan 4 reduces with preset deceleration, and the acceleration speed regulation mode F of fan 4 is that fan 4 accelerates with preset acceleration.

[0086] The above-mentioned is only some implementation manners of the utility model. For ordinary skilled person in the art, under the premise of not departing from the creative concept of the utility model, a number of deformation and improvement can be made, and these all belong to the protection scope of the utility model.

Claims

1. An oil screen assembly for a range hood, comprising: The oil screen body (11) is provided with a flap assembly and a plurality of oil fume sensors uniformly distributed on the oil screen body (11), the oil fume sensors are used for detecting the oil fume concentration at each position of the oil screen body (11), a plurality of smoke inlet holes (10) are formed in the oil screen body (11), and the flap assembly comprises: a plurality of flaps (12) arranged on one side of the oil screen body (11) and corresponding to the plurality of smoke inlet holes (10); a first driving structure (13) arranged on the oil screen body (11) and in transmission connection with the flaps (12), the first driving structure (13) can drive the flaps (12) to swing relative to the oil screen body (11) according to the oil fume concentration, so that the flaps (12) can swing between completely closing the smoke inlet holes (10) and completely opening the smoke inlet holes (10).

2. The hood oil screen assembly according to claim 1, wherein, The flaps (12) are arranged on the smoke outlet side of the oil screen body (11).

3. The hood oil screen assembly according to claim 2, wherein, The flap assembly further comprises a second driving structure (14), the smoke inlet holes (10) are formed in the oil screen body (11) in a first direction, the flaps (12) are arranged in extension in the first direction, an output end of the second driving structure (14) is connected with the flaps (12), the second driving structure (14) can drive the flaps (12) to move between folding and unfolding in the first direction according to the oil fume concentration, the flaps (12) are provided with oppositely arranged first and second end portions in the first direction, and the first end portion of the flaps (12) and / or the second end portion of the flaps (12) are provided with the first driving structure (13).

4. The hood oil screen assembly according to claim 3, wherein, The flaps (12) are flexible plate bodies.

5. The hood oil screen assembly according to claim 3, wherein, The first driving structure (13) comprises: a first driving motor (131) arranged on the oil screen body (11); a connecting rod structure (132) arranged at an output end of the first driving motor (131) and connected with the first end portion of the flaps (12) or the second end portion of the flaps (12), the first driving motor (131) drives the flaps (12) to swing between completely closing the smoke inlet holes (10) and completely opening the smoke inlet holes (10) through the connecting rod structure (132).

6. The hood oil screen assembly according to claim 5, wherein, The flaps (12) are provided with oppositely arranged first and second side portions in a second direction, the first direction is arranged perpendicularly to the second direction, and the connecting rod structure (132) comprises: a first connecting rod (1321) mounted on the smoke outlet side of the oil screen body (11), the first side portion of the flaps (12) is movably connected with the first connecting rod (1321); a second connecting rod (1322), a first end of the second connecting rod (1322) is mounted at the output end of the first driving motor (131), the first end of the second connecting rod (1322) is oppositely arranged to a 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). A third connecting rod (1323) is movably connected with the second end of the second connecting rod (1322) and the second side of the flap (12), and 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 along the direction of approaching or moving 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 hood oil screen assembly according to claim 6, wherein, The first end of the second connecting rod (1322) is hingedly connected with the first connecting rod (1321), and the output end of the first driving motor (131) is connected with the first side of the flap (12) after penetrating through the first end of the second connecting rod (1322) and the first connecting rod (1321).

8. The hood oil screen assembly according to claim 7, wherein, The second connecting rod (1322) is provided with a plurality of first ends, one of which is installed on the output end of the first driving motor (131).

9. The hood oil screen assembly according to claim 7, wherein, The second driving structure (14) comprises: A screw-nut pair comprising a second driving motor (141) and a screw rod (144) in transmission connection with each other, the second driving motor (141) being capable of moving along the screw rod (144), a plurality of flaps (12) comprising a driving flap (121) and a driven flap (122), the screw rod (144) being arranged on the first side of the driving flap (121) and extending along the first direction, the second driving motor (141) being connected with the first end of the driving flap (121) or the second end of the driving flap (121), and the output end of the first driving motor (131) being connected with the screw rod (144) after penetrating through the first end of the second connecting rod (1322) and the first connecting rod (1321); A plurality of slide rails (145) arranged on the second side of the driving flap (121), the first side of the driven flap (122) and the second side of the driven flap (122) along the first direction, and the second side of the driving flap (121), the first side of the driven flap (122) and the second side of the driven flap (122) being in sliding connection with the slide rails (145), and the slide rails (145) being in movable connection with the second connecting rod (1322); A transmission block (143) arranged on the slide rail (145) on the first side of the driven flap (122), and the transmission block (143) being in sliding connection with the slide rail (145); A transmission rod (142) connecting the second driving motor (141) and the transmission block (143), and the transmission rod (142) being capable of rotating relative to the transmission block (143).

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

11. The hood oil screen assembly according to claim 10, wherein, The oil screen body (11) is provided with a first region (K1) and a second region (K2) arranged adjacent to each other, and the first region (K1) and the second region (K2) are provided with the flap assembly.

12. The hood oil screen assembly according to claim 11, wherein, A 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-back direction, the front of the first region (K1) is provided with the first oil fume sensor (A), the rear of the first region (K1) is provided with the third oil fume sensor (B), the front of the second region (K2) is provided with the third oil fume sensor (B), and the rear of the second region (K2) is provided with the fourth oil fume sensor (D), for the first region (K1), 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 smoke concentration detected by the first oil fume sensor (A), 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 smoke concentration detected by the second oil fume sensor (C); for the second region (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 smoke concentration detected by the third oil fume sensor (B), 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 smoke concentration detected by the fourth oil fume sensor (D).

13. The hood oil screen assembly according to claim 12, wherein, The first direction is the front-rear direction, the length of the fully unfolded flap (12) is W, the first telescopic section (1201) is the front half of the flap (12), the second telescopic section (1202) is the rear half of the flap (12), the direction from front to rear is positive, the direction from rear to front is negative, the fixed midpoint (1200) of the flap (12) is zero, the second driving structure (14) can drive 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) can drive 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 hood oil screen assembly according to claim 13, wherein, The flap (12) can swing relative to the oil screen 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), the included angle α between the flap (12) and the oil screen body (11) is 0° to 30°, when the flap (12) is at the second angle level (M3), the included angle α between the flap (12) and the oil screen body (11) is 31° to 60°, and when the flap (12) is at the third angle level (H3), the included angle α between the flap (12) and the oil screen body (11) is 61° to 90°.

15. The hood oil screen assembly according to claim 14, wherein, 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) includes a first concentration level (L0), a second concentration level (M0) and a third concentration level (H0), 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 0mg / m 3 to 20mg / m 3 , 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 21mg / m 3 to 70mg / m 3 , 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 (H0), the smoke concentration is 71mg / m 3 to 100mg / m 3 .

16. The hood oil screen assembly according to claim 15, wherein, The flap (12) moves according to 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) according to the following table:

17. A range hood characterized by The oil screen assembly (1) of the extractor hood according to any one of claims 1-16, wherein the oil screen assembly (1) is installed at the smoke inlet of the smoke collecting cover (2), the machine box (3) is arranged on the upper side of the smoke collecting cover (2), and the fan (4) is installed in the machine box (3).

18. The hood according to claim 17, characterized in that, The fan (4) includes three operating modes of speed reduction mode (S), original speed maintaining mode (K) and speed increasing mode (F), and the operating mode of the fan (4) moves according to 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) according to the following table:

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