CN109405002B - Range hood and control method thereof - Google Patents
Range hood and control method thereof Download PDFInfo
- Publication number
- CN109405002B CN109405002B CN201710703861.XA CN201710703861A CN109405002B CN 109405002 B CN109405002 B CN 109405002B CN 201710703861 A CN201710703861 A CN 201710703861A CN 109405002 B CN109405002 B CN 109405002B
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- oil
- filter screen
- gap
- oil filter
- screen
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- 238000000034 method Methods 0.000 title claims description 9
- 239000003921 oil Substances 0.000 claims abstract description 207
- 239000000346 nonvolatile oil Substances 0.000 claims abstract description 45
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 239000003517 fume Substances 0.000 claims abstract description 22
- 238000010411 cooking Methods 0.000 claims abstract description 20
- 239000000779 smoke Substances 0.000 claims description 58
- 238000001914 filtration Methods 0.000 claims description 24
- 230000009471 action Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 230000002093 peripheral effect Effects 0.000 abstract description 7
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2035—Arrangement or mounting of filters
Abstract
A cooking fume exhauster is composed of fume collecting hood, rectifying plate, oil filter screen consisting of left and right oil filter screens, and the gap regulating mechanism for regulating the gap between left and right oil filter screens. The invention has the advantages that: the range hood is beneficial to considering negative pressure distribution among the left suction inlet, the right suction inlet and the peripheral suction inlet by automatically adjusting the oil screen gap between the movable oil screen and the fixed oil filter, thereby improving the fume sucking effect of the range hood.
Description
Technical Field
The invention relates to a range hood, in particular to a range hood and a control method thereof.
Background
The traditional range hood sucks smoke from the middle oil filter screen, and has poor effect on the cage for escaping the smoke; later evolves the surrounding air intake of rectification plate type, although the absorbing and pulling ability to escape the oil smoke to the periphery can be enhanced by adopting the surrounding air intake, the path of the oil smoke is prolonged, and the oil smoke is easy to gather under the rectification plate in the large oil smoke environment, so that the user experience is influenced. At present, the prior art discloses a range hood with a combined air inlet, as disclosed in China patent application with the application number 201611129969.4 (application publication number CN 106482192A), namely an L-shaped range hood with an upper air inlet and a lower air inlet, the range hood comprises a negative pressure source and a main body frame, the main body frame is of an inverted L shape, an air inlet is arranged on the main body frame, a cavity for air to flow is arranged in the main body frame, the negative pressure source is arranged on the main body frame, the air inlet is used for sucking air by generating negative pressure, the sucked air flows through the cavity, finally, the air is discharged from one end of the negative pressure source, the air inlet only comprises an upper air inlet and a lower air inlet, the lower air inlet is arranged on the concave surface of the L-shaped structure of the main body frame and is positioned at the lower part of the main body frame, a reflux groove is formed in the surface of the top part of the concave surface facing the main body frame, and the upper air inlet is arranged on the surface of the downward extending part of the main body frame, the range hood has good smoke sucking effect, and the effect of the range hood can be better prevented from overflowing and the effect on the smoke sucking effect of the bottom air outlet can be reduced. Although the above-mentioned L-shaped range hood has two combined suction inlets of an upper air inlet and a lower air inlet, the air inlet area cannot be adjusted according to the cooking state, the negative pressure distribution of the upper air inlet and the lower air inlet cannot be considered, and the user experience is poor.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide the range hood capable of adjusting the air inlet area according to the cooking state of the left side and the right side and simultaneously having stronger negative pressure distribution around the smoke guide plate.
The second technical problem to be solved by the invention is to provide a control method of the range hood capable of automatically adjusting the gap between the corresponding oil meshes according to the cooking state at the left side and the right side.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the range hood comprises a fume collecting hood body, a rectifying plate and an oil filter screen, wherein a peripheral suction inlet for oil fume is formed between the periphery of the rectifying plate and the fume collecting hood body, and the range hood is characterized in that: the oil filter screen comprises a left oil filter screen and a right oil filter screen which are arranged on the rectifying plate, the left oil filter screen and the right oil filter screen both comprise a fixed oil filter screen and a movable oil filter screen which are distributed in an up-and-down layered manner, an oil screen gap between the fixed oil filter screen and the movable oil filter screen on the left side forms a left suction inlet of oil smoke, the oil screen gap between the fixed oil screen and the movable oil screen on the right side forms a right suction inlet of oil smoke, the oil screen gap adjusting mechanism is used for driving the movable oil screen to move up and down relative to the fixed oil screen so as to adjust the oil screen gap, and the oil screen gap of the left oil screen and the oil screen gap of the right oil screen are mutually independent.
Preferably, a first sensor is installed on the left side of the bottom of the fume collecting hood, and a second sensor is installed on the right side of the bottom of the fume collecting hood.
Further preferably, the first sensor is a smoke sensor or a temperature sensor, and the second sensor is a smoke sensor or a temperature sensor.
In order to enable the movable oil filter screen to move more stably, the fixed oil filter screen and the movable oil filter screen are of flat plate structures, guide columns which are vertically arranged are arranged on the fixed oil filter screen, guide holes are formed in corresponding positions of the movable oil filter screen, and the guide columns are inserted into the corresponding guide holes.
The gap adjusting mechanism can have various structures, and preferably, the gap adjusting mechanism comprises a driver and a sliding block arranged at the output end of the driver, the driver is arranged at the back surface of the rectifying plate, the sliding block horizontally moves under the driving of the driver, the fixed oil filter screen is arranged on the rectifying plate, the movable oil filter screen is arranged above the fixed oil filter screen, the front end of the sliding block is inserted between the fixed oil filter screen and the movable oil filter screen, and the movable oil filter screen relatively moves up and down under the action of the sliding block.
In order to prevent oil drops at the bottom of the volute from dropping onto the cooking bench through the oil filter screen, the oil filtering holes on the fixed oil filter screen and the vertical projection surfaces of the oil filtering holes of the movable oil filter screen at the same side are mutually staggered completely, the fixed oil filter screen is provided with first oil filtering strips which are distributed in parallel at intervals, the movable oil filter screen is provided with second oil filtering strips which are distributed in parallel at intervals, and the oil filtering holes between the first oil filtering strips fall onto the second oil filtering strips on the vertical projection surfaces of the movable oil filter screen.
As a preferable scheme, the fixed oil filter screen and the rectifying plate are integrated into a whole. The integrated forming part is adopted, and the structure is simpler.
As another preferable scheme, the left side and the right side of the rectifying plate are respectively provided with a mounting hole, and the fixed oil filter screen is matched with the corresponding mounting holes and is mounted on the rectifying plate. For example, the fixed oil filter screen may be welded to the rectifying plate.
The invention solves the second technical problem by adopting the technical proposal that: the control method of the range hood comprises a controller and is characterized by comprising the following control steps:
(1) the range hood is started, the first sensor and the second sensor respectively detect the left cooking state and the right cooking state, and corresponding sampling values T1 and T2 are obtained;
(2) the controller reads T1 and T2 in the step (1) and compares and judges the T1 and the T2 with a preset threshold T;
(3) if the I T1-T2I is less than or equal to T, the concentration or the temperature of the left oil smoke is similar, and the controller controls the gap adjusting mechanism to adjust the gap of the left oil net and the gap of the right oil net to the maximum gap H;
if |T1-T2| > T, oil smoke exists on the left side and oil smoke does not exist on the right side, the controller controls the gap adjusting mechanism to close the gap of the right side oil net, and the gap of the left side oil net is adjusted to the maximum gap H, otherwise, oil smoke exists on the right side and oil smoke does not exist on the left side, the controller controls the gap adjusting mechanism to close the gap of the left side oil net, and the gap of the right side oil net is adjusted to the maximum gap H;
if T1-T2 is greater than T, the left and right sides have oil smoke, and the left oil smoke concentration is greater than the right oil smoke concentration, the controller controls the gap adjusting mechanism to adjust the left oil screen gap to the maximum gap H, and the right oil screen gap is adjusted to be
If T2-T1 is greater than T, the left and right sides have oil smoke, and the right oil smoke concentration is greater than the left oil smoke concentration, the controller controls the gap adjusting mechanism to adjust the gap of the right oil screen to the maximum gap H, and the gap of the left oil screen to be
Compared with the prior art, the invention has the advantages that: because this range hood is through setting up left side oil filter screen and right side oil filter screen on the rectifying plate, the oil filter screen clearance of left side oil filter screen and right side oil filter screen can be independently adjusted through clearance adjustment mechanism, consequently can adjust the area of admitting air according to controlling culinary art state, simultaneously, still can keep stronger negative pressure distribution around the smoke guide plate, can continue to draw cage escape oil smoke, promote big fume user experience, this range hood's control method is through the oil filter screen clearance between automatically regulated activity oil filter screen and the fixed oil filter, help taking into account the negative pressure distribution between left side sunction inlet, right side sunction inlet and the periphery sunction inlet, thereby promote range hood's fume absorbing effect.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2;
FIG. 4 is a schematic diagram of the structure of the present invention when the oil screen gap is maximum on the right side and the oil screen gap is not on the left side;
FIG. 5 is a schematic diagram of the present invention with the maximum oil screen gap on the right side and a certain oil screen gap on the left side;
FIG. 6 is a schematic view of the structure of the present invention when the left and right side oil screen gaps are all maximized;
fig. 7 is a flowchart of a control method according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 3, the range hood in the present embodiment includes a smoke collecting hood 1, a rectifying plate 2, and an oil filter screen. The rectification plate 2 is fixed on the fume collecting hood 1, and a peripheral suction inlet for fume is formed between the periphery of the rectification plate 2 and the fume collecting hood 1; the oil filter screen comprises a left oil filter screen L and a right oil filter screen R which are arranged on the rectifying plate, wherein the left oil filter screen L and the right oil filter screen R respectively comprise a fixed oil filter screen 3 and a movable oil filter screen 4, an oil screen gap between the fixed oil filter screen 3 and the movable oil filter screen 4 on the left side forms a left suction inlet of oil fume, and an oil screen gap between the fixed oil filter screen 3 and the movable oil filter screen 4 on the right side forms a right suction inlet of oil fume.
In this embodiment, the fixed oil filter screen 3 and the rectifying plate 2 are integrally formed, the movable oil filter screen 4 is disposed above the fixed oil filter screen 3, the fixed oil filter screen 3 and the movable oil filter screen 4 are both in a flat plate structure and are distributed in two layers, a guide post 32 is vertically disposed on the fixed oil filter screen 3, and a guide hole (not shown in the figure) is disposed at a corresponding position of the movable oil filter screen 4, and the guide post 32 is inserted into the corresponding guide hole, so that the movable oil filter screen 4 can stably move up and down relative to the fixed oil filter screen 3.
In this embodiment, a gap adjusting mechanism 5 for driving the movable oil screen 4 to move up and down with respect to the fixed oil screen 3 to adjust the gap between the oil screens is mounted on the rectifying plate 2. The gap adjusting mechanism 5 comprises a driver 51 and a sliding block 52 arranged on the output end of the driver, the driver 51 is arranged on the back surface of the rectifying plate 2, the sliding block 52 horizontally moves under the driving of the driver 51, the front end of the sliding block 52 is inserted between the fixed oil filter screen 3 and the movable oil filter screen 4, and the front end of the sliding block 52 is provided with a guide inclined surface 521 which is propped against the movable oil filter screen 4, and the guide inclined surface 521 is inclined downwards from back to front, so that when the sliding block 52 moves forwards, the movable oil filter screen 4 can be driven to move upwards, the oil filter screen gap is increased, and when the sliding block moves backwards, the movable oil filter screen 4 moves downwards under the action of self gravity, and the gap is reduced. By adjusting the oil screen gap between the movable oil screen 4 and the fixed oil screen 3, it is possible to achieve a negative pressure distribution between the left suction port, the right suction port, and the outer peripheral suction port.
In this embodiment, the vertical projection surfaces of the oil filtering holes on the fixed oil filtering screen 3 and the oil filtering holes on the movable oil filtering screen 4 are completely staggered. Specifically, the fixed oil screen 3 has first oil filter rods 31 spaced in parallel, the movable oil screen 4 has second oil filter rods 41 spaced in parallel, and the oil filtering holes between the first oil filter rods 31 fall onto the second oil filter rods 41 on the vertical projection surface of the movable oil screen 4. Therefore, not only can the oil drop perforation at the bottom of the volute be reduced, but also part of sound waves of pneumatic noise in the fan can be dissipated when the sound waves are transmitted out through the double-layer oil filter screen, so that the double-layer oil filter screen can form a noise reduction system.
A first sensor 61 is installed on the left side of the bottom of the fume collecting hood 1, and a second sensor 62 is installed on the right side of the bottom of the fume collecting hood 1. The first sensor 61 is a smoke sensor or a temperature sensor, and the second sensor 62 is a smoke sensor or a temperature sensor.
As shown in fig. 4, when the right range is not used and the left range is not used, the gap between the right oil screen and the left oil screen is adjusted to be maximum, and the left oil screen is adjusted to be closed, so that the negative pressure on the cooking side is enhanced. The flow direction of the air flow is shown by arrows in the figure, and at this time, the oil smoke can only be sucked into the range hood through the peripheral suction inlet and the right suction inlet.
As shown in fig. 5, when the right side range is used for cooking, the left side range is used for cooking or stewing, the gap between the right side oil net and the left side oil fume is adjusted to a certain gap, and the negative pressure on the cooking side is enhanced. The flow direction of the air flow is shown by arrows in the figure, and at this time, the oil smoke can be sucked into the interior of the range hood through the peripheral suction port, the left suction port and the right suction port, but the oil smoke sucked into the left suction port is less because the left oil smoke gap is relatively smaller.
As shown in fig. 6, in the case of frying both the left and right cookers, the gaps between the left and right oil nets are all adjusted to the maximum. The flow direction of the air flow is shown by arrows in the figure, and at this time, the oil smoke can be sucked into the range hood through the outer peripheral suction port, the left suction port and the right suction port.
As shown in fig. 7, the control method of the range hood comprises the following steps:
(1) the range hood is started, the first sensor 61 and the second sensor 62 respectively detect the left cooking state and the right cooking state, and corresponding sampling values T1 and T2 are obtained;
(2) the controller 7 reads T1 and T2 in the step (1) and compares and judges with a preset threshold value T;
(3) if the I T1-T2I is less than or equal to T, the concentration or the temperature of the left oil smoke is similar, and the controller 7 controls the gap adjusting mechanism 5 to adjust the gap of the left oil net and the gap of the right oil net to the maximum gap H;
if |T1-T2| > T, and oil smoke exists on the left side and no oil smoke exists on the right side, the controller 7 controls the gap adjusting mechanism 5 to close the gap of the oil net on the right side, and adjust the gap of the oil net on the left side to the maximum gap H, otherwise, the controller 7 controls the gap adjusting mechanism 5 to close the gap of the oil net on the left side and no oil smoke exists on the left side, and adjust the gap of the oil net on the right side to the maximum gap H;
if T1-T2 is greater than T, the left and right sides have oil smoke, and the left oil smoke concentration is greater than the right oil smoke concentration, the controller 7 controls the gap adjusting mechanism 5 to adjust the left oil screen gap to the maximum gap H, and the right oil screen gap to the maximum gap H
If T2-T1 is greater than T, the left and right sides have oil smoke, and the right oil smoke concentration is greater than the left oil smoke concentration, the controller 7 controls the gap adjusting mechanism 5 to adjust the gap of the right oil screen to the maximum gap H, and the gap of the left oil screen to the maximum gap H
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and improvements can be made to the present invention without departing from the principles of the present invention, for example, the fixed oil filter screen and the rectifying plate can be separately provided, and mounting holes are formed on both the left and right sides of the rectifying plate, and the fixed oil filter screen is adapted to the corresponding mounting holes and mounted on the rectifying plate, which are considered to be within the scope of the present invention.
Claims (8)
1. The utility model provides a range hood, includes collection petticoat pipe (1), rectifying plate (2) and oil filter screen, form the periphery sunction inlet of oil smoke between the periphery of rectifying plate (2) and collection petticoat pipe (1), its characterized in that: the oil filter screen comprises a left oil filter screen (L) and a right oil filter screen (R) which are arranged on the rectifying plate, the left oil filter screen (L) and the right oil filter screen (R) are respectively provided with a fixed oil filter screen (3) and a movable oil filter screen (4) which are distributed in an up-down layering mode, a left suction inlet for cooking fume is formed by an oil screen gap between the left fixed oil filter screen (3) and the movable oil filter screen (4), a right suction inlet for cooking fume is formed by an oil screen gap between the right fixed oil filter screen (3) and the movable oil filter screen (4), a gap adjusting mechanism (5) for driving the movable oil filter screen (4) to move up and down relative to the fixed oil filter screen (3) so as to adjust the oil screen gap is arranged, the oil screen gap adjustment of the left oil filter screen (L) and the right oil filter screen (R) are mutually independent, a first sensor (61) for detecting a left cooking state is arranged on the left side of the bottom of the fume collecting hood (1), a second sensor (62) for detecting a right cooking state is arranged on the right side of the bottom of the fume collecting hood (1), a second sensor (62) for controlling the cooking state is arranged on the right side, and the second sensor (7) can be used for receiving and can correspondingly adjusting the gap of the first sensor (7) and can be adjusted according to the signal.
2. The range hood of claim 1, wherein: the first sensor (61) is a smoke sensor or a temperature sensor, and the second sensor (62) is a smoke sensor or a temperature sensor.
3. The range hood of claim 1, wherein: the fixed oil filter screen (3) and the movable oil filter screen (4) are of flat plate structures, guide columns (32) which are vertically arranged are arranged on the fixed oil filter screen (3), guide holes are formed in corresponding positions of the movable oil filter screen (4), and the guide columns (32) are inserted into the corresponding guide holes.
4. The range hood of claim 1, wherein: the gap adjusting mechanism (5) comprises a driver (51) and a sliding block (52) arranged at the output end of the driver, the driver (51) is arranged at the back of the rectifying plate (2), the sliding block (52) horizontally moves under the driving of the driver (51), the fixed oil filter screen (3) is arranged on the rectifying plate (2), the movable oil filter screen (4) is arranged above the fixed oil filter screen (3), the front end of the sliding block (52) is inserted between the fixed oil filter screen (3) and the movable oil filter screen (4), and the movable oil filter screen (4) moves up and down relative to the fixed oil filter screen (3) under the action of the sliding block (52).
5. The range hood of claim 1, wherein: the oil filtering holes on the fixed oil filtering net (3) and the vertical projection surfaces of the oil filtering holes on the movable oil filtering net (4) on the same side are mutually and completely staggered, the fixed oil filtering net (3) is provided with first oil filtering strips (31) which are distributed in parallel at intervals, the movable oil filtering net (4) is provided with second oil filtering strips (41) which are distributed in parallel at intervals, and the vertical projection surfaces of the oil filtering holes between the first oil filtering strips (31) on the movable oil filtering net (4) fall into the second oil filtering strips (41).
6. The range hood of claim 1, wherein: the fixed oil filter screen (3) and the rectifying plate (2) are integrally formed.
7. The range hood of claim 1, wherein: the left side and the right side of the rectifying plate (2) are respectively provided with a mounting hole, and the fixed oil filter screen (3) is matched with the corresponding mounting holes and is mounted on the rectifying plate (2).
8. A control method of a range hood according to claim 2, comprising a controller (7), characterized by comprising the following control steps:
(1) the range hood is started, the first sensor (61) and the second sensor (62) respectively detect the left cooking state and the right cooking state, and corresponding sampling values T1 and T2 are obtained;
(2) the controller (7) reads the T1 and the T2 in the step (1) and compares and judges with a preset threshold value T;
(3) if the I T1-T2I is less than or equal to T, the concentration or the temperature of the left oil smoke is similar, and the controller (7) controls the gap adjusting mechanism (5) to adjust the gap of the left oil net and the gap of the right oil net to the maximum gap H;
if the absolute value of T1-T2 is larger than T, oil smoke exists on the left side and oil smoke does not exist on the right side, the controller (7) controls the gap adjusting mechanism (5) to close the gap of the right side oil net, and adjust the gap of the left side oil net to the maximum gap H, otherwise, oil smoke exists on the right side and oil smoke does not exist on the left side, the controller (7) controls the gap adjusting mechanism (5) to close the gap of the left side oil net, and adjust the gap of the right side oil net to the maximum gap H;
if T1-T2 is more than T, the left and right sides are provided with oil smoke, the left oil smoke concentration is greater than the right oil smoke concentration, the controller (7) controls the gap adjusting mechanism (5) to adjust the gap of the left oil screen to the maximum gap H, and the gap of the right oil screen is adjusted to be
If T2-T1 is more than T, the left and right sides have oil smoke, and the right oil smoke concentration is greater than the left oil smoke concentration, the controller (7) controls the gap adjusting mechanism (5) to adjust the gap of the right oil screen to the maximum gap H, and the gap of the left oil screen to be
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710703861.XA CN109405002B (en) | 2017-08-16 | 2017-08-16 | Range hood and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710703861.XA CN109405002B (en) | 2017-08-16 | 2017-08-16 | Range hood and control method thereof |
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| CN109405002A CN109405002A (en) | 2019-03-01 |
| CN109405002B true CN109405002B (en) | 2024-01-16 |
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| CN113685865A (en) * | 2021-07-01 | 2021-11-23 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN113639293A (en) * | 2021-08-31 | 2021-11-12 | 宁波方太厨具有限公司 | Range hood and control method thereof |
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| CN109405002A (en) | 2019-03-01 |
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