CN109579084B - Control method of range hood - Google Patents
Control method of range hood Download PDFInfo
- Publication number
- CN109579084B CN109579084B CN201710907116.7A CN201710907116A CN109579084B CN 109579084 B CN109579084 B CN 109579084B CN 201710907116 A CN201710907116 A CN 201710907116A CN 109579084 B CN109579084 B CN 109579084B
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- Prior art keywords
- blowing mechanism
- air
- nozzle
- smoke
- fume collecting
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 164
- 238000007664 blowing Methods 0.000 claims abstract description 116
- 239000000779 smoke Substances 0.000 claims abstract description 93
- 239000003517 fume Substances 0.000 claims abstract description 61
- 230000008859 change Effects 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 241000886569 Cyprogenia stegaria Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000006233 lamp black Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Classifications
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- 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
- F24C15/2028—Removing cooking fumes using an air curtain
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses a range hood with a blowing mechanism, which comprises a fume collecting hood, and a first blowing mechanism and a second blowing mechanism which are respectively arranged at the left side and the right side inside the fume collecting hood, wherein the first blowing mechanism and the second blowing mechanism both comprise an auxiliary fan and an air outlet device, and are characterized in that: and a deformable air guide device is connected between each auxiliary fan and the corresponding air outlet device, so that each auxiliary fan is communicated with the corresponding air outlet device, and each air outlet device comprises a nozzle which is communicated with the lower part of the fume collecting hood and can change the relative position with the fume collecting hood. Also discloses a control method of the range hood. Through setting up rotatable or liftable air-out device for air-out angle of air-out device is adjustable, thereby can be directed against different culinary art scenes, the effective control area of oil smoke is adjusted to the pertinence, improves oil smoke control ability, avoids the oil smoke escape.
Description
Technical Field
The invention relates to kitchen appliances, in particular to a range hood with a blowing mechanism and a control method of the range hood.
Background
The range hood has become one of the indispensable kitchen appliances in modern families for exhausting the oil smoke generated during cooking of the range. Generally, a range hood comprises a top suction type range hood and a side suction type range hood, and the top suction type range hood has more and more wide application due to the advantages of neatness, light weight, small occupied space and the like. The top-suction type range hood generally comprises a fume collecting hood and a fan shell positioned on the fume collecting hood, wherein a centrifugal fan is arranged in the fan shell.
The commonly used top-draft type range hood, such as a range hood disclosed in China patent application number 201410704669.9, comprises a fume collecting hood with a fume suction port, a wind cabinet arranged on the upper part of the fume collecting hood, a fan arranged in the wind cabinet and provided with a volute, and a negative pressure is formed when the air in the wind cabinet is exhausted through the effect of the fan, so that external fume is sucked into the wind cabinet, and the purpose of fume suction is realized.
The top-suction type range hood has the advantages of classical beauty and the like, but also has the limit of installation size, the height requirement from a kitchen table surface is 650-750 cm, a negative pressure area below a smoke collecting cavity is mainly concentrated in a central area, and the oil smoke control capability on the edge of the smoke collecting cavity is weaker, so that the oil smoke suction effect is greatly influenced, and the anti-interference performance is poor.
For this reason, there is an improved range hood, such as a range hood disclosed in chinese patent application No. 201020166285.3, which comprises an air duct, a connecting piece, an air blowing port, an air inlet duct, a suction foot, an air door and a kitchen range, wherein the range hood is arranged around the periphery of the kitchen range, the air source enters the air inlet duct and then passes through each air duct, and the air is continuously output from each air blowing port to form an upward blowing air curtain around the kitchen range, so that the dispersed oil droplets and oil smoke are brought into the suction range of the range hood along with the upward blowing air curtain; as another example, the chinese patent application with application number 201610461717.5 discloses a smoke-diffusion-preventing fume exhaust device, which is composed of a main exhaust system, a smoke-diffusion-preventing system and a liquid collecting system, wherein the smoke-diffusion-preventing system further comprises a fume collecting fan and four telescopic air pipes, the fume collecting fan and the four telescopic air pipes are respectively arranged in a gap between two adjacent baffles at four corners of the bottom of the fume collecting hood, a wind-listing hole is formed in the pipe wall of the telescopic air pipes, and the fume collecting fan is arranged at the upper end of the telescopic air pipes.
However, in these prior arts, once the air blowing mechanism is installed, the relative position between the air blowing mechanism and the fume collecting hood is fixed, only horizontal air blowing can be performed, or both sides of the air blowing mechanism can blow downwards at a fixed angle, so that the air blowing direction and the downward angle cannot be controlled, and the air blowing mechanism has no pertinence to the fume generated in different scenes and has weak control capability, so that further improvement is still required.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide the range hood with the blowing mechanism for improving the oil smoke control capability and reducing the oil smoke escape aiming at the problems existing in the prior art.
The second technical problem to be solved by the invention is to provide a control method of the range hood.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a range hood with mechanism of blowing, includes the collection petticoat pipe to and set up respectively at the inside left and right both sides of collection petticoat pipe first mechanism and the second mechanism of blowing, first mechanism and the second mechanism of blowing all include auxiliary blower and air-out device, its characterized in that: and a deformable air guide device is connected between each auxiliary fan and the corresponding air outlet device, so that each auxiliary fan is communicated with the corresponding air outlet device, and each air outlet device comprises a nozzle which is communicated with the lower part of the fume collecting hood and can change the relative position with the fume collecting hood.
According to one aspect of the invention, the air outlet device comprises an air storage pipe extending in the front-rear direction, an air storage cavity communicated with the air guide device is formed in the air storage pipe, an opening is formed in the peripheral wall of the air storage pipe and faces to the position below the fume collecting hood, and two sides of the opening extend downwards to form the nozzles communicated with the air storage cavity.
In order to enable the blowing mechanism to blow air flow below the fume collecting hood to form an air curtain, through holes are formed in the positions, corresponding to the nozzles, of the bottom of the fume collecting hood so that the nozzles are communicated with the lower part of the fume collecting hood, the through holes are also in long strips extending in the front-back direction, and the width of the through holes in the left-right direction is larger than that of the nozzles.
Preferably, the angle of the nozzle is adjusted to form different air curtains so as to prevent oil smoke from escaping, the first air blowing mechanism and the second air blowing mechanism further comprise a bracket, a driving mechanism and a transmission mechanism respectively, two ends of the air storage pipe can be rotatably supported on the corresponding bracket, and the driving mechanism and the transmission mechanism are arranged at one end of the air storage pipe to drive the air storage pipe to rotate, so that the angle of the nozzle relative to the fume collecting hood is adjusted.
According to another aspect of the invention, the air outlet device comprises an air storage pipe extending in the front-rear direction, an air storage cavity communicated with the air guide device is formed in the air storage pipe, an opening is formed in the peripheral wall of the air storage pipe and faces to the lower position of the fume collecting hood, air guide walls are respectively formed by downward extension of two sides of the opening, the bottom end of the air guide wall forms the nozzle communicated with the air storage cavity, and the nozzle extends inwards and obliquely upwards.
In order to make the air flow sprayed out of the nozzle uniform, the width of the nozzle is s, s is more than or equal to 1mm and less than or equal to 3mm, and the distance between the two air guide walls is s1, and s is less than or equal to s1.
Preferably, the different air curtains are formed by adjusting the height of the nozzle, so that oil smoke is prevented from escaping, the first air blowing mechanism and the second air blowing mechanism further comprise a support, a driving mechanism and a transmission mechanism respectively, the air storage pipe and the corresponding support are fixedly arranged, the transmission mechanism comprises a first linear guide rail and a second linear guide rail which extend in the vertical direction, the first linear guide rail and the second linear guide rail are respectively movably connected with the front end and the rear end of the support, the driving mechanism is arranged at one end of the support, so that the support is driven to move along the two linear guide rails in the vertical direction, and the nozzle is driven to lift relative to the smoke collecting cover.
For making the driving mode comparatively simple, drive mechanism still include set up on the support with first linear guide sliding fit's slider, with second linear guide rolling fit's gyro wheel, set up on the side opposite with the slider on the first linear guide on the side that extends in vertical direction, set up on the side opposite with the gyro wheel on the second linear guide on the second spout that extends in vertical direction, the slider inserts first spout in forming sliding connection to be connected with drive mechanism, the gyro wheel is located the second spout and forms rolling connection.
For realizing the automatic control of mechanism of blowing, set up the air intake on the collection petticoat pipe, be provided with on the lower surface that is located the air intake periphery with first smog sensor that the mechanism corresponds, with the second smog sensor that the mechanism corresponds of blowing, first mechanism, second mechanism, first smog sensor and the second smog sensor of blowing all are connected to main control unit electrically.
The first technical scheme adopted by the invention for solving the second technical problem is as follows: the control method of the range hood comprises the following steps:
1) Starting the range hood and running the range hood in a default program;
2) The smoke concentration of the left side and the right side of the air inlet of the smoke collecting cover is detected by a first smoke sensor and a second smoke sensor respectively and is transmitted to a main controller;
3) The smoke concentration detected by the first smoke sensor is A, the smoke concentration detected by the second smoke sensor is B, the preset smoke concentration critical value in the main controller is C, and the main controller judges the detection results of the two smoke sensors:
3.1 If A > B and A > C, the driving mechanism of the first blowing mechanism is operated to rotate the nozzle of the first blowing mechanism inward so that the blowing angle is adjusted inward;
3.2 If B > a and B > C, the driving mechanism of the second blowing mechanism is operated to rotate the nozzle of the second blowing mechanism inward so that the blowing angle is adjusted inward;
3.3 If not, the range hood continues to operate with the default program.
The first technical scheme adopted by the invention for solving the second technical problem is as follows: the control method of the range hood comprises the following steps:
1) Starting the range hood and running the range hood in a default program;
2) The smoke concentration of the left side and the right side of the air inlet of the smoke collecting cover is detected by a first smoke sensor and a second smoke sensor respectively and is transmitted to a main controller;
3) The smoke concentration detected by the first smoke sensor is A, the smoke concentration detected by the second smoke sensor is B, a first concentration critical value C1 and a second concentration critical value C2 of smoke are preset in the main controller, and C2 is more than C1, and the main controller judges the detection results of the two smoke sensors:
3.1 If A > C1, the driving mechanism of the first blowing mechanism operates, the nozzle of the first blowing mechanism descends by a stroke h1, and the auxiliary fan of the first blowing mechanism is regulated and controlled to operate at a low level;
3.2 If A is more than C2, the driving mechanism of the first blowing mechanism operates, the nozzle of the first blowing mechanism descends by a stroke h2, and h2 is more than h1, and the auxiliary fan of the first blowing mechanism is regulated and controlled to operate at a high level;
3.3 If B > C1, the driving mechanism of the second blowing mechanism operates, the nozzle of the second blowing mechanism descends by a stroke h1, and the auxiliary fan of the second blowing mechanism is regulated and controlled to operate at a low level to guide the fume to not escape;
3.4 If B is more than C2, the driving mechanism of the second blowing mechanism operates, the nozzle of the second blowing mechanism descends by a stroke h2, and h2 is more than h1, and the auxiliary fan of the second blowing mechanism is regulated and controlled to operate at a high level;
3.5 If not, the range hood continues to operate with the default program.
Compared with the prior art, the invention has the advantages that: through setting up rotatable or liftable air-out device for air-out angle of air-out device is adjustable, thereby can be directed against different culinary art scenes, the effective control area of oil smoke is adjusted to the pertinence, improves oil smoke control ability, avoids the oil smoke escape.
Drawings
Fig. 1 is a schematic view of a first embodiment of a range hood according to the present invention;
FIG. 2 is a schematic view of a hidden portion of the hood and housing of the range hood of FIG. 1;
fig. 3 is a cross-sectional view of the range hood of fig. 2;
FIG. 4 is an enlarged schematic view of portion I of FIG. 3;
fig. 5 is a schematic view of a blower mechanism of the range hood of fig. 1;
fig. 6 is a schematic control flow diagram of a first embodiment of the range hood according to the present invention;
fig. 7 is a cross-sectional view of a second embodiment of the range hood of the present invention with the chassis hidden;
FIG. 8 is an enlarged schematic view of portion II of FIG. 7;
fig. 9 is a schematic view of a blower mechanism of the range hood of fig. 7;
fig. 10 is an exploded view of the blower mechanism of fig. 9;
fig. 11 is a schematic control flow diagram of a first embodiment of the range hood according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
Example 1
Referring to fig. 1 to 5, a range hood with a blowing mechanism includes a hood 1 and a cabinet 2 above the hood 1, and a fan system (not shown) is disposed in the cabinet 2. For convenience of description, hereinafter, "front", "rear", "left", "right", "upper", "lower" refer to the orientation of the range hood with respect to a user when the range hood is in use, and are not limited in structure.
In this embodiment, the fume collecting hood 1 is provided with an air inlet 11, and the fume is sucked from the air inlet 11 and discharged into the public flue through the fan system. The cabinet 2 includes four side walls 21 so as to enclose a square or rectangular cross-sectional box structure.
The fume collecting hood 1 comprises a lower cover plate 12, a vertical side plate 13, an upper cover plate 14 and a horizontal bottom plate 15, wherein the air inlet 11 is formed in the middle of the lower cover plate 12, the lower cover plate 12 is inclined upwards from the outer side edge to the middle, and a fume collecting cavity is formed below the lower cover plate 12. The outer edges of the lower cover plate 12 are connected to the inner edges of the bottom plate 15, the outer edges of the bottom plate 15 are connected to the bottom ends of the side plates 13, the top ends of the side plates 13 are connected to the outer edges of the upper cover plate 14, and the inner edges of the lower cover plate 12 and the upper cover plate 14 are connected to the side walls 21 of the corresponding sides of the cabinet 2. The upper cover plate 14 may be inclined in the same direction as the lower cover plate 12. The upper cover plate 14, the lower cover plate 12, the side plates 13 and the bottom plate 15 define a cavity therebetween. The lower cover 12, the side plate 13, the upper cover 14 and the bottom plate 15 may be integrally formed.
The bottom opening of the case 2 corresponds to the air inlet 11, so that the oil smoke can enter the case 2 through the air inlet 11 after entering the cavity in the fume collecting hood 1.
In order to control the lampblack generated in different scenes in a targeted manner, a blowing mechanism is arranged in the cavity. In this embodiment, the blowing mechanism includes two blowing mechanisms, the first blowing mechanism 41 and the second blowing mechanism 42, which are respectively disposed on the left and right sides in the cavity, and the two blowing mechanisms may be identical in structure and symmetrically disposed.
For convenience of description, the structure of the first blowing mechanism 41 will be described in detail below as an example. The first blowing mechanism 41 includes an auxiliary fan 411, an air guiding device 412 and an air outlet device 413, preferably, an air supplementing port (not shown) is provided on the upper cover plate 14 of the fume collecting hood 1 at a position corresponding to the air inlet of the auxiliary fan 411, and the air supplementing port can be in the form of a plurality of small holes, so that the first blowing mechanism 41 is ensured not to fail due to long-term working under the greasy dirt environment. The auxiliary fan 411 may employ a small centrifugal fan. The air guiding device 412 is used for guiding the air flow blown out by the auxiliary fan 411 to the air outlet device 413 to blow out at a high speed, and in this embodiment, the air guiding device 412 is a hose, such as a bellows, and can generate a certain deformation.
The air outlet device 413 includes an air storage tube 4131, a bracket 4132, a driving mechanism 4133 and a transmission mechanism 4134, wherein the air storage tube 4131 has a hollow cylindrical shape, preferably a cylindrical shape, and extends in the front-rear direction. The gas storage tube 4131 is internally provided with a gas storage cavity 41311, the peripheral wall of the gas storage tube 4131 is provided with an opening towards the lower position of the fume collecting hood 1, two sides of the opening are respectively extended downwards to form a nozzle 4135 communicated with the gas storage cavity 41311, and the nozzle 4135 is in a long strip shape extending in the front-rear direction. The smoke collecting cover 1 is provided with a through hole 151 on the bottom plate 15 at a position corresponding to the nozzle 4135 in the present embodiment, so that the airflow sprayed from the nozzle 4135 can pass through the bottom plate 15, the through hole 151 is also in a long strip shape extending in the front-rear direction, and the width of the through hole 151 in the left-right direction is larger than that of the nozzle 4135.
After being sucked by the auxiliary fan 411, the air flow enters the air storage cavity 41311 of the air outlet device 413 through the air guide device 412, and finally forms an air curtain through the nozzle 4135.
The bracket 4132 is fixedly disposed in the cavity, both ends of the air tube 4131 are rotatably supported on the bracket 4132, and the driving mechanism 4133 and the transmission mechanism 4134 are disposed at one end of the air tube 4131. In this embodiment, the driving mechanism 4133 is a motor, the transmission mechanism 4134 includes a first gear 41341 'and a second gear 41342' meshed with each other, the first gear 41341 'is connected to an output shaft of the motor and is driven to rotate by the motor, and the second gear 41342' is connected to an end portion of the air storage tube 4131, so that when the driving mechanism 4133 is started, the air storage tube 4131 can be driven to rotate by the transmission mechanism 4134, thereby adjusting the air blowing angle. The rotation axis is a horizontal line extending in the front-rear direction, and if the air storage tube 4131 is cylindrical, the rotation axis is its own axis.
Because the air storage tube 4131 is connected with the auxiliary fan 411 through the hose, when the air storage tube 4131 rotates, only a certain deformation of the hose is caused, and the auxiliary fan 411 is not driven to generate displacement, so that the stability of the operation of the auxiliary fan 411 is prevented from being influenced.
The lower part of the air inlet 11 of the fume collecting hood 1, the lower cover plate 12 is positioned on the lower surface of the periphery of the air inlet 11, a smoke sensor is arranged, a first smoke sensor 51 is arranged on the left side of the air inlet 11 respectively corresponding to the blowing mechanism, and a second smoke sensor 52 is arranged on the right side of the air inlet 11. The smoke sensor and the blowing mechanism are electrically connected with the main controller 6 of the range hood, so that the action of the blowing mechanism can be controlled by the data detected by the smoke sensor, and the control method comprises the following steps:
1) Starting the range hood and running the range hood in a default program;
2) The smoke sensor detects the smoke concentration at the air inlet 11 and transmits the smoke concentration to the main controller 6;
3) The smoke concentration detected by the first smoke sensor 51 is a, the smoke concentration detected by the second smoke sensor 52 is B, the preset smoke concentration threshold value in the main controller 6 is C, and the main controller 6 determines the detection results of the two smoke sensors:
3.1 If a > B and a > C, the driving mechanism 4133 of the first blowing mechanism 41 on the left side operates to rotate the nozzle 4135 of the first blowing mechanism 41 inward so that the blowing angle is adjusted inward, guiding the fume to not escape;
3.2 If B > a and B > C, the driving mechanism 4133 of the second blowing mechanism 42 on the right side operates to rotate the nozzle 4135 of the second blowing mechanism 42 inward so that the blowing angle is adjusted inward, guiding the fume to not escape;
3.3 If not, namely when A or B is smaller than C, the oil smoke concentration is smaller, the air curtain does not need to be adjusted, and the range hood continues to operate according to a default program.
Example two
Referring to fig. 7 to 10, in the present embodiment, the difference from the first embodiment described above is that the driving mechanism 4133 and the transmission mechanism 4134 are used to drive the air storage tube 4131 and the bracket 4132 of the air outlet device 413 to rise and fall instead of rotating.
The circumferential wall of the air storage tube 4131 is opened towards the position below the fume collecting hood 1, the two sides of the opening are respectively extended downwards to form an air guide wall 41312, the bottom end of the air guide wall 41312 is provided with a nozzle 4135 communicated with the air storage cavity 41311, the nozzle 4135 extends inwards (towards the nozzle 4135 at the other side) and obliquely upwards, and preferably, the included angle between the nozzle 4135 and the horizontal direction is an acute angle or is parallel to the horizontal direction.
After being sucked by the auxiliary fan 411, the air flow enters the air storage cavity 41311 of the air outlet device 413 through the air guide device 412, and finally forms an inward or upward-inclined air curtain through the nozzles 4135 by the air guide wall 41312. In order to make the air outlet flow uniform, the width of the nozzle 4135 is s, and s is more than or equal to 1mm and less than or equal to 3mm, and the interval between the two air guide walls 41312 is s1, and s is less than or equal to s1.
The air storage tube 4131 is fixedly arranged with the bracket 4132, the driving mechanism 4133 adopts a motor in the embodiment, the transmission mechanism 4134 comprises a first linear guide 41341 and a second linear guide 41342 which extend in the vertical direction, wherein the first linear guide 41341 is positioned at the front end of the bracket 4132, the second linear guide 41342 is positioned at the rear end of the bracket 4132, and the driving mechanism 4133 is arranged on the first linear guide 41341. The transmission 4134 further includes a slider 41343 engaged with the first linear rail 41341 and a roller 41344 engaged with the second linear rail 41342, wherein the slider 41343 is fixed to the front end of the bracket 4132 and the roller 41344 is rotatably supported to the rear end of the bracket 4132. Preferably, both the slider 41343 and the roller 41344 are disposed on top of the bracket 4132.
The first linear guide 41341 is provided with a first sliding groove 41345 extending in the vertical direction on the side opposite to the sliding block 41343, the second linear guide 41342 is provided with a second sliding groove 41346 extending in the vertical direction on the side opposite to the roller 41344, the sliding block 41343 is inserted into the first sliding groove 41345 and is connected with the driving mechanism 4133 through a common mechanism such as a worm gear or a rack and pinion, and the roller 41344 is positioned in the second sliding groove 41346 to form rolling connection. Thus, the driving mechanism 4133 may drive the slider 41343 to move up and down along the first sliding groove 41345, thereby driving the front end of the bracket 4132 to move up and down, and simultaneously, the rear end of the bracket 4132 moves up and down along the front end, and the roller 41344 moves up and down along the second sliding groove 41346 in the vertical direction. Through the lifting movement of the bracket 4132, the air storage tube 4131 and the nozzle 4135 can be synchronously lifted, and because the air storage tube 4131 is connected with the auxiliary fan 411 through a hose, when the air storage tube 4131 is lifted, only a certain deformation of the hose is caused, and the auxiliary fan 411 is not driven to generate displacement, so that the stability of the operation of the auxiliary fan 411 is prevented from being influenced.
When the range hood is in operation, the nozzle 4135 descends from the through hole 151 on the bottom plate 15, the air guide wall 41312 can form a physical shield, the nozzle 4135 provides inward or obliquely upward jet airflow, and the combination of the nozzle 4135 and the jet airflow can lead the fume cohesion to generate a better effect. When the range hood stops running, the nozzle 4135 is reset upwards and is flush with the bottom plate 15 of the fume collecting hood 1, so that the range hood is clean and easy to handle.
The control method of the range hood of the embodiment comprises the following steps:
1) Starting the range hood and running the range hood in a default program;
2) The smoke sensor detects the smoke concentration at the air inlet 11 and transmits the smoke concentration to the main controller 6;
3) The first smoke sensor 51 detects a smoke concentration a, the second smoke sensor 52 detects a smoke concentration B, the main controller 6 presets a first smoke concentration threshold C1 and a second smoke concentration threshold C2, and C2 > C1, and the main controller 6 determines the detection results of the two smoke sensors:
3.1 If A > C1, the driving mechanism 4133 of the first blowing mechanism 41 on the left side is operated to lower the nozzle 4135 of the first blowing mechanism 41 by the stroke h1, and simultaneously the auxiliary fan 411 of the first blowing mechanism 41 is regulated and controlled to be operated in a low gear to guide the fume to be not escaped;
3.2 If A > C2, the driving mechanism 4133 of the first blowing mechanism 41 on the left side is operated to lower the nozzle 4135 of the first blowing mechanism 41 by a stroke h2 (h 2 > h 1), and simultaneously the auxiliary fan 411 of the first blowing mechanism 41 is regulated and controlled to be operated in a high-grade mode to guide the fume to be cohesive and not to escape;
3.3 If B > C1, the driving mechanism 4133 of the second blowing mechanism 42 on the right side is operated to lower the nozzle 4135 of the second blowing mechanism 42 by the stroke h1, and simultaneously the auxiliary fan 411 of the second blowing mechanism 42 is regulated and controlled to be operated at a low gear to guide the fume to be not escaped;
3.4 If B > C2, the driving mechanism 4133 of the second blowing mechanism 42 on the right side is operated to lower the nozzle 4135 of the second blowing mechanism 42 by a stroke h2 (h 2 > h 1), and simultaneously the auxiliary fan 411 of the second blowing mechanism 42 is regulated and controlled to be operated in a high-grade mode to guide the fume to be cohesive and not to escape;
3.5 If not, namely when A or B is smaller than C1, the oil smoke concentration is smaller, the air curtain does not need to be adjusted, and the range hood continues to operate with a default program.
Claims (7)
1. The control method of the range hood comprises a fume collecting hood (1), and a first blowing mechanism (41) and a second blowing mechanism (42) which are respectively arranged at the left side and the right side in the fume collecting hood (1), wherein the first blowing mechanism (41) and the second blowing mechanism (42) comprise an auxiliary fan (411) and an air outlet device (413); the method is characterized in that:
a deformable air guide device (412) is connected between each auxiliary fan (411) and the corresponding air outlet device (413), so that each auxiliary fan (411) is communicated with the corresponding air outlet device (413), and each air outlet device (413) comprises a nozzle (4135) which is communicated with the lower part of the fume collecting hood (1) and can change the relative position with the fume collecting hood (1); the air outlet device (413) comprises an air storage pipe (4131) extending in the front-rear direction, an air storage cavity (41311) communicated with the air guide device (412) is formed in the air storage pipe (4131), an opening is formed in the peripheral wall of the air storage pipe (4131) and faces to the position below the fume collecting hood (1), and two sides of the opening extend downwards to form nozzles (4135) communicated with the air storage cavity (41311);
an air inlet (11) is formed in the fume collecting hood (1), a first smoke sensor (51) corresponding to a first blowing mechanism (41) and a second smoke sensor (52) corresponding to a second blowing mechanism (42) are arranged on the lower surface of the periphery of the air inlet (11), and the first blowing mechanism (41), the second blowing mechanism (42), the first smoke sensor (51) and the second smoke sensor (52) are all electrically connected to the main controller (6);
the control method comprises the following steps:
1) Starting the range hood and running the range hood in a default program;
2) The smoke concentration at the left side and the right side of the air inlet (11) of the smoke collecting cover (1) is detected through a first smoke sensor (51) and a second smoke sensor (52) respectively and is transmitted to a main controller (6);
3) The smoke concentration detected by the first smoke sensor (51) is A, the smoke concentration detected by the second smoke sensor (52) is B, the concentration critical value of preset smoke in the main controller (6) is C, and the main controller (6) judges the detection results of the two smoke sensors:
3.1 If A > B and A > C, the driving mechanism (4133) of the first blowing mechanism (41) is operated to rotate the nozzle (4135) of the first blowing mechanism (41) inward so that the blowing angle is adjusted inward;
3.2 If B > a and B > C, the driving mechanism (4133) of the second blowing mechanism (42) operates to rotate the nozzle (4135) of the second blowing mechanism (42) inward so that the blowing angle is adjusted inward;
3.3 If not, the range hood continues to operate with the default program.
2. The control method of a range hood according to claim 1, wherein: the bottom of the fume collecting hood (1) is provided with a through hole (151) corresponding to the nozzle (4135) so that the nozzle (4135) is communicated with the lower part of the fume collecting hood (1), the through hole (151) is also in a strip shape extending in the front-back direction, and the width of the through hole (151) in the left-right direction is larger than that of the nozzle (4135).
3. The control method of a range hood according to claim 2, wherein: the first blowing mechanism (41) and the second blowing mechanism (42) further comprise a bracket (4132), a driving mechanism (4133) and a transmission mechanism (4134) respectively, two ends of the air storage tube (4131) are rotatably supported on the corresponding bracket (4132), and the driving mechanism (4133) and the transmission mechanism (4134) are arranged at one end of the air storage tube (4131) to drive the air storage tube (4131) to rotate, so that the angle of the nozzle (4135) relative to the fume collecting hood (1) is adjusted.
4. The control method of the range hood comprises a fume collecting hood (1), and a first blowing mechanism (41) and a second blowing mechanism (42) which are respectively arranged at the left side and the right side in the fume collecting hood (1), wherein the first blowing mechanism (41) and the second blowing mechanism (42) comprise an auxiliary fan (411) and an air outlet device (413); the method is characterized in that:
a deformable air guide device (412) is connected between each auxiliary fan (411) and the corresponding air outlet device (413), so that each auxiliary fan (411) is communicated with the corresponding air outlet device (413), and each air outlet device (413) comprises a nozzle (4135) which is communicated with the lower part of the fume collecting hood (1) and can change the relative position with the fume collecting hood (1);
the air outlet device (413) comprises an air storage pipe (4131) extending in the front-back direction, an air storage cavity (41311) communicated with the air guide device (412) is formed in the air storage pipe (4131), an opening is formed in the peripheral wall of the air storage pipe (4131) and faces to the position below the fume collecting hood (1), air guide walls (41312) are respectively formed by downward extending of two sides of the opening, a nozzle (4135) communicated with the air storage cavity (41311) is formed at the bottom end of the air guide wall (41312), and the nozzle (4135) extends inwards and obliquely upwards;
an air inlet (11) is formed in the fume collecting hood (1), a first smoke sensor (51) corresponding to a first blowing mechanism (41) and a second smoke sensor (52) corresponding to a second blowing mechanism (42) are arranged on the lower surface of the periphery of the air inlet (11), and the first blowing mechanism (41), the second blowing mechanism (42), the first smoke sensor (51) and the second smoke sensor (52) are all electrically connected to the main controller (6);
the control method comprises the following steps:
1) Starting the range hood and running the range hood in a default program;
2) The smoke concentration at the left side and the right side of the air inlet (11) of the smoke collecting cover (1) is detected through a first smoke sensor (51) and a second smoke sensor (52) respectively and is transmitted to a main controller (6);
3) The smoke concentration detected by the first smoke sensor (51) is A, the smoke concentration detected by the second smoke sensor (52) is B, a first concentration critical value C1 and a second concentration critical value C2 of smoke are preset in the main controller (6), and C2 is more than C1, and the main controller (6) judges the detection results of the two smoke sensors:
3.1 If A > C1, the driving mechanism (4133) of the first blowing mechanism (41) is operated to lower the nozzle (4135) of the first blowing mechanism (41) by a stroke h1, and simultaneously, the auxiliary fan (411) of the first blowing mechanism (41) is regulated to be operated at a low gear;
3.2 If A > C2, the driving mechanism (4133) of the first blowing mechanism (41) is operated to lower the nozzle (4135) of the first blowing mechanism (41) by a stroke h2, and h2 > h1, and simultaneously, the auxiliary fan (411) of the first blowing mechanism (41) is regulated and controlled to be operated at a high level;
3.3 If B > C1, the driving mechanism (4133) of the second blowing mechanism (42) operates to descend the nozzle (4135) of the second blowing mechanism (42) by a stroke h1, and simultaneously, the auxiliary fan (411) of the second blowing mechanism (42) is regulated and controlled to operate to a low level to guide the fume to be cohesive and not escaped;
3.4 If B > C2, the driving mechanism (4133) of the second blowing mechanism (42) is operated to lower the nozzle (4135) of the second blowing mechanism (42) by a stroke h2, and h2 > h1, and simultaneously, the auxiliary fan (411) of the second blowing mechanism (42) is regulated to be operated at a high level;
3.5 If not, the range hood continues to operate with the default program.
5. The control method of a range hood according to claim 4, wherein: the width of the nozzle (4135) is s, s is more than or equal to 1mm and less than or equal to 3mm, the distance between the two air guide walls (41312) is s1, and s is less than or equal to s1.
6. The control method of a range hood according to claim 4, wherein: the first blowing mechanism (41) and the second blowing mechanism (42) further comprise a support (4132), a driving mechanism (4133) and a transmission mechanism (4134) respectively, the air storage pipe (4131) is fixedly arranged with the corresponding support (4132), the transmission mechanism (4134) comprises a first linear guide rail (41341) and a second linear guide rail (41342) which extend in the vertical direction, the first linear guide rail (41341) and the second linear guide rail (41342) are movably connected with the front end and the rear end of the support (4132) respectively, and the driving mechanism (4133) is arranged at one end of the support (4132) so as to drive the support (4132) to move along the two linear guide rails in the vertical direction and further drive the nozzle (4135) to lift relative to the fume collecting cover (1).
7. The control method of a range hood according to claim 6, wherein: the transmission mechanism (4134) further comprises a sliding block (41343) which is arranged on the bracket (4132) and is in sliding fit with the first linear guide rail (41341), a roller (41344) which is in rolling fit with the second linear guide rail (41342), a first sliding groove (41345) which extends in the vertical direction is formed in the side surface, opposite to the sliding block (41343), of the first linear guide rail (41341), a second sliding groove (41346) which extends in the vertical direction is formed in the side surface, opposite to the roller (41344), of the second linear guide rail (41342), and the sliding block (41343) is inserted into the first sliding groove (41345) to form sliding connection and is connected with the driving mechanism (4133), and the roller (41344) is located in the second sliding groove (41346) to form rolling connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710907116.7A CN109579084B (en) | 2017-09-29 | 2017-09-29 | Control method of range hood |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710907116.7A CN109579084B (en) | 2017-09-29 | 2017-09-29 | Control method of range hood |
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| CN109579084B true CN109579084B (en) | 2024-03-29 |
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| CN110345540B (en) * | 2019-08-22 | 2020-11-24 | 美的集团股份有限公司 | Smoke exhaust ventilator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003207184A (en) * | 2002-01-11 | 2003-07-25 | Sekisui House Ltd | Air-supply outlet structure of supply and exhaust type kitchen ventilator |
| CN2793613Y (en) * | 2005-05-30 | 2006-07-05 | 杨伟 | Cooker hood |
| CN101196310A (en) * | 2008-01-01 | 2008-06-11 | 李孝龙 | Smoke guiding machine with rotating air-duct |
| WO2009018679A1 (en) * | 2007-08-06 | 2009-02-12 | Acxing Industrial Co., Ltd. | Air curtain generating device |
| CN207279752U (en) * | 2017-09-29 | 2018-04-27 | 宁波方太厨具有限公司 | A kind of range hood with blower mechanism |
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2017
- 2017-09-29 CN CN201710907116.7A patent/CN109579084B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003207184A (en) * | 2002-01-11 | 2003-07-25 | Sekisui House Ltd | Air-supply outlet structure of supply and exhaust type kitchen ventilator |
| CN2793613Y (en) * | 2005-05-30 | 2006-07-05 | 杨伟 | Cooker hood |
| WO2009018679A1 (en) * | 2007-08-06 | 2009-02-12 | Acxing Industrial Co., Ltd. | Air curtain generating device |
| CN101196310A (en) * | 2008-01-01 | 2008-06-11 | 李孝龙 | Smoke guiding machine with rotating air-duct |
| CN207279752U (en) * | 2017-09-29 | 2018-04-27 | 宁波方太厨具有限公司 | A kind of range hood with blower mechanism |
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