CN112377960A - Range hood and control method - Google Patents
Range hood and control method Download PDFInfo
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- CN112377960A CN112377960A CN202011123787.2A CN202011123787A CN112377960A CN 112377960 A CN112377960 A CN 112377960A CN 202011123787 A CN202011123787 A CN 202011123787A CN 112377960 A CN112377960 A CN 112377960A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000779 smoke Substances 0.000 claims abstract description 182
- 230000007246 mechanism Effects 0.000 claims description 38
- 230000000391 smoking effect Effects 0.000 claims description 25
- 239000003517 fume Substances 0.000 claims description 14
- 230000007704 transition Effects 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 36
- 230000008569 process Effects 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 17
- 235000019504 cigarettes Nutrition 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 239000006233 lamp black Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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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
- F24C15/2021—Arrangement or mounting of control or safety systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a range hood and a control method, wherein the range hood comprises a smoke guide part arranged at the lower position of a smoke absorption part and an air supply channel arranged on a smoke collection cover, wherein the smoke guide part is provided with a smoke guide surface, a plurality of air nozzles are respectively arranged at two sides of the smoke guide surface so that air flows sprayed by the air nozzles at two sides flow from two sides of the smoke guide surface to the middle direction of the smoke guide surface, a cyclone piece is arranged at the middle position of the smoke guide surface in an outward extending mode so that the air flows flowing through the cyclone piece generate cyclone flow, the air outlet end of the air supply channel is communicated with the air nozzles, and the air inlet end of the air supply channel is communicated with the outside and conveys the air in the conventional air supply channel. The range hood has simple structure, and can form a rotary suction gathering effect in the oil smoke suction process of the range hood, thereby preventing the oil smoke from diffusing and escaping and further achieving the effect of high-efficiency gathering the oil smoke.
Description
Technical Field
The invention relates to the technical field of kitchen electricity, in particular to a range hood.
Background
The range hood is a main means for collecting oil smoke in a kitchen, and how to improve the suction efficiency of the range hood is always important for the design and research of the range hood.
In the related art, most range hoods have a hemispherical area in the air suction range during air suction, and air in all directions is sucked indiscriminately. The air flow rate at the position of the air suction port is larger in the air suction mode, and the air flow rate far away from the air suction port is rapidly reduced along with the increase of the distance from the air suction port. Therefore, in a short distance below the air suction port, the upward speed of the air becomes very small, so that the upward suction force is insufficient, and the range hood is easily interfered by external factors, such as the influence of factors which can disturb the airflow, such as the walking of people, the operation of a fan or cold air, and the like, so that the oil smoke or pollutants are dissipated along with the flowing of disturbed airflow, and the range hood has poor smoke collecting and smoking effects.
Disclosure of Invention
The invention aims to solve at least one of the problems in the prior art to a certain extent, and therefore the invention provides the range hood which has a simple structure and can form a rotary suction gathering effect in the process of sucking oil smoke by the range hood, so that the oil smoke is prevented from diffusing and escaping, and the effect of high-efficiency smoke gathering is achieved.
In addition, the invention also provides a control method of the range hood, which is simple and feasible and can make the rotary suction gathering effect more stable.
The first object is achieved by the following technical scheme:
a range hood comprises a fume collecting hood and a fan component, wherein a fume suction part for discharging fume outwards is arranged above the fume collecting hood, the fan component is arranged at the top of the smoke collecting cover, an air inlet of the fan component is communicated with the smoke sucking part, the smoke guide part is arranged at the position below the smoke sucking part, the air supply channel is arranged on the smoke collecting cover, wherein the smoke guide part is provided with a smoke guide surface, a plurality of air nozzles are respectively arranged on two sides of the smoke guide surface so that the air flow sprayed by the air nozzles on the two sides flows from the two sides of the smoke guide surface to the middle of the smoke guide surface, a cyclone piece extends outwards from the middle position of the smoke guide surface to generate cyclone flow of the airflow passing through the cyclone piece, the air outlet end of the air supply channel is communicated with the air jet port, and the air inlet end of the air supply channel is communicated with the outside to convey air flow in the air supply channel.
In some embodiments, the cyclone piece has two first sides, a second side and a third side which are symmetrically arranged, wherein one end of the first side is connected with the smoke guiding surface, and the other end of the first side is connected with the third side through the second side after extending outwards.
In some embodiments, the first side and the third side are both planar structures, and the included angle between the first side and the third side is an obtuse angle.
In some embodiments, the angle between the first side and the third side is 5 ° to 30 °.
In some embodiments, the second side is a circular arc transition surface so that a circular arc transition connection is realized between the first side and the third side through the second side.
In some embodiments, the second side has a diameter of 60mm to 120 mm.
In some embodiments, a fourth side is connected between the two third sides.
In some embodiments, the distance between the fourth side and the smoke guide surface is greater than 60 mm.
In some embodiments, two sides of the smoke guide surface are provided with bosses protruding outwards in the vertical direction, and the air outlets are formed in the opposite side walls of the two bosses.
In some embodiments, the exhaust hood further comprises an air supply fan, the air supply fan is arranged at the top of the smoke collecting hood, and the air supply fan is communicated with the air inlet end of the air supply channel so as to convey air flow in the air supply channel.
In some embodiments, an air inlet end of the air supply channel is communicated with an air outlet of the fan assembly to convey air flow in the air supply channel.
In some embodiments, the fan assembly includes a motor, a main fan mechanism and an auxiliary fan mechanism, wherein the motor has a first rotating shaft and a second rotating shaft, the first rotating shaft is connected to the main fan mechanism, the second rotating shaft is connected to the auxiliary fan mechanism, the motor drives the main fan mechanism and the auxiliary fan mechanism to rotate coaxially, the main fan mechanism is communicated with the smoke absorbing part, and the auxiliary fan mechanism is communicated with the air inlet end of the air supply channel to convey air flow in the air supply channel.
The second objective is achieved by the following technical scheme:
a control method of a range hood, characterized by comprising the range hood as claimed in any one of claims 1 to 12, the control method of the range hood comprising the steps of:
the flow ratio of the air volume at the air jet and the air volume at the smoking part is 0.016 to 0.026.
Compared with the prior art, the invention at least comprises the following beneficial effects:
1. the range hood disclosed by the invention is simple in structure, and can form a rotary suction gathering effect in the process of sucking oil smoke by the range hood, so that the oil smoke is prevented from diffusing and escaping, and the effect of high-efficiency gathering the oil smoke is further achieved.
2. The control method of the range hood is simple and feasible, and can make the rotary suction gathering effect more stable.
Drawings
Fig. 1 is a schematic structural diagram of a range hood in an embodiment of the invention;
FIG. 2 is a bottom view of a range hood in an embodiment of the present invention;
FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;
fig. 4 is a schematic partial structure diagram of a range hood according to a first embodiment of the present invention;
fig. 5 is a schematic partial structure diagram of a range hood according to a second embodiment of the present invention;
fig. 6 is a schematic partial structure diagram of a range hood according to a third embodiment of the present invention;
fig. 7 is a top view of a range hood according to a third embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of the claims of the present invention.
The first embodiment is as follows:
as shown in fig. 1 to 4, the present embodiment provides a range hood, which includes a smoke collecting hood 1 and a fan assembly 2, wherein a smoke absorbing part 3 for discharging smoke outwards is arranged at the position above the smoke collecting cover 1, the fan component 2 is arranged at the top of the smoke collecting cover 1, an air inlet of the fan component 2 is communicated with the smoke absorbing part 3, the smoke guiding part 4 is arranged at the position below the smoke absorbing part 3, and an air supply channel 5 is arranged on the smoke collecting cover 1, wherein the smoke guiding part 4 is provided with a smoke guiding surface 41, a plurality of air nozzles 42 are respectively arranged on two sides of the smoke guiding surface 41 so that the air flow ejected by the air nozzles 42 on the two sides flows from the two sides of the smoke guiding surface 41 to the middle direction thereof, the cyclone piece 6 is extended outwards from the middle position of the smoke guide surface 41 to generate rotational flow of the airflow flowing through the cyclone piece, the air outlet end of the air supply channel 5 is communicated with the air jet 42, and the air inlet end of the air supply channel 5 is communicated with the outside to convey the airflow in the air supply channel 5.
In this embodiment, the range hood is provided with the smoking portion 3 and the smoking portion 3 has the inlet, be provided with smoke guiding portion 4 in the below of collection petticoat pipe 1, blow out by leading the jet orifice 42 on the smoke guiding surface 41 both sides to the whirlwind piece 6 of leading the middle position department of smoke guiding surface 41 behind air supply channel 5 with the outside air, the air current that is blown out by the jet orifice 42 on the smoke guiding surface 41 both sides takes place the turn rotation after leading smoke guiding surface 41, whirlwind piece 6 in proper order and forms the wind curtain, because the gas attaches the wall effect, consequently the whirl through smoke guiding portion 4 cooperates the suction force of range hood fan subassembly 2 itself, thereby form unique spiral air current, and then make the range hood form the spin-suction effect before the diffusion of oil smoke gas, its simple structure, can prevent the oil smoke diffusion from escaping, reach the effect of high-efficient cigarette that gathers together.
In this embodiment, the fan assembly 2 has a fan and a motor, the fan is installed on the output end of the motor, and the motor drives the fan to rotate to generate an upward suction force, so as to drive the external airflow and the oil smoke to enter the smoking part 3 from the smoke inlet, and then the external airflow and the oil smoke are discharged out of the room or an external discharge flue from the smoke exhaust pipeline of the range hood after passing through the fan.
Furthermore, the cyclone piece 6 is provided with two first side surfaces 61, a second side surface 62 and a third side surface 63 which are symmetrically arranged, wherein one end of the first side surface 61 is connected with the smoke guide surface 41, and the other end of the first side surface 61 extends outwards and is connected with the third side surface 63 through the second side surface 62.
Preferably, the first side surface 61 and the third side surface 63 are both planar structures, and an included angle between the first side surface 61 and the third side surface 63 is an obtuse angle, so that the structure is simple, and the effect of forming rotational flow after the airflow turns and rotates can be further improved.
Specifically, the included angle between the first side surface 61 and the third side surface 63 is 5-30 degrees, and the design is reasonable and ingenious.
Preferably, the second side surface 62 is an arc transition surface so that the first side surface 61 and the third side surface 63 are in arc transition connection through the second side surface 62, and the structure is simple, and the gas flow can be turned and rotated to form swirling gas.
Specifically, the diameter of the second side surface 62 is 60mm to 120mm, and the design is reasonable and ingenious.
Furthermore, a fourth side 64 is connected between the two third sides 63, so that the structure is simple and the design is reasonable.
Preferably, the distance between the fourth side surface 64 and the smoke guide surface 41 is greater than 60mm, the design is ingenious, and the effect of forming rotational flow by the oil smoke can be effectively improved.
Specifically, the two sides of the smoke guide surface 41 are provided with the bosses 43 protruding outward in the vertical direction, and the air nozzles 42 are formed in the opposite side walls of the two bosses 43, so that the structure is simple, and the flow of the airflow ejected by the air nozzles 42 along the smoke guide surface 41 can be facilitated.
In the embodiment, a smoking part 3 which is level with the horizontal line is arranged at the top of the smoke collecting hood 1, a plurality of smoke inlets are arranged at the position of the smoking part 3, so that the smoking part 3 can be used as an oil net to filter oil smoke, the oil smoke generated by cooking is guided into the smoke collecting hood 1 through the smoking part 3, the oil smoke entering the smoke collecting hood 1 is discharged out through the fan component 2, a smoke guiding part 4 is arranged at the lower position of the smoking part 3, the smoke guiding part 4 is arranged at the bottom of the smoking part 3, the back surfaces of the smoke guiding part 4 and the smoke guiding part are positioned on the same plane, so that the smoking part 3 and the smoke guiding part 4 form a 7 shape, the front side of the bottom surface of the smoking part 3 is used for preventing the oil smoke from escaping upwards, the smoke guiding part 4 is provided with a cyclone piece 6 arranged at the middle position of the smoke guiding surface 41, one side of the cyclone piece 6 is connected with the smoke guiding surface 41, the other, thus, the bottom space of the fume collecting hood 1 is divided into two parts by the cyclone piece 6 to form two symmetrical space parts at intervals. In this embodiment, the air supply duct may be formed by connecting multiple sections of hard pipes, or may be formed by using other forms such as a hose and an adapter.
In this embodiment, the both sides of leading cigarette face 41 are equipped with boss 43 toward the evagination in vertical direction, thereby two bosses 43 have seted up air jet 42 on relative lateral wall and make and lead the relative setting of cigarette face 41 both sides air jet 42, it flows to lead the direction of its intermediate position department by the outside of leading cigarette face 41 respectively to lead the gas of cigarette face 41 both sides air jet 42 spun, air supply channel 5 is connected so that air supply channel 5's air-out end and air jet 42 intercommunication, air supply channel 5's air inlet end and collection petticoat pipe 1's outside intercommunication. The shape of the air outlet 42 in this embodiment is a long hole, a polygonal hole, or a star-shaped hole, but is not limited to the above shape, and an air outlet 42 having an appropriate shape may be selected according to actual needs as long as the function of injecting air outward is achieved.
In this embodiment, a fourth side surface 64 is disposed in the middle of the cyclone 6, the fourth side surface 64 may be a planar structure inclined from top to bottom and backward, or a planar structure perpendicular to a horizontal plane, a distance between the fourth side surface 64 and the smoke guiding surface 41 is greater than 60mm, preferably, a distance between the fourth side surface 64 and the smoke guiding surface 41 is 90mm, so as to further improve the effect of forming the rotational flow of the lampblack, when the fourth side surface 64 is a planar structure inclined from top to bottom and backward, a distance between a lower end surface of the fourth side surface 64 and the smoke guiding surface 41 is smaller than a distance between an upper end surface of the fourth side surface 64 and the smoke guiding surface 41, and a distance between a lower end surface of the fourth side surface 64 and the smoke guiding surface 41 is greater than 60mm, two first side surfaces 61, a second side surface 62 and a third side surface 63 are symmetrically disposed on two sides of the cyclone 6, and the first side surfaces 61, the second side surfaces 62 and the third side surfaces 63 are sequentially connected, in addition, the first side surface 61 and the third side surface 63 are both of a planar structure, the first side surface 61 and the third side surface 63 are both perpendicular to the smoke guide surface 41, an included angle formed between one end of the first side surface 61 close to the second side surface 62 and one end of the third side surface 63 close to the second side surface 62 is an obtuse angle, the included angle between the first side surface 61 and the third side surface 63 is 5 ° to 30 °, preferably, the included angle between the first side surface 61 and the third side surface 63 is 18 °, the second side surface 62 is an arc transition surface so that the first side surface 61 and the third side surface 63 are in arc transition connection through the second side surface 62, the diameter of the second side surface 62 is 60mm to 120mm, and preferably, the diameter of the second side surface 62 is 90 mm.
Further, still include air supply fan 7, air supply fan 7 sets up at the top of collection petticoat pipe 1 to air supply fan 7 is linked together with the air inlet end of air supply channel 5 and is carried the air current in the air supply channel 5 in the past, and its simple structure, reasonable in design can do benefit to the leading-in air supply channel 5 the inside of outside air.
In this embodiment, an independent air supply fan 7 is additionally arranged in the smoke collecting hood 1, so that the air supply fan 7 blows outside air to the cyclone piece 6 through the air supply channel 5 and then through the air outlets 42 on the two sides of the boss 43, an air inlet cover is arranged on the top plate of the smoke collecting hood 1, a plurality of vent holes are arranged on the air inlet cover, the air supply fan 7 is arranged in the air inlet cover, when the air supply fan 7 operates, the outside air is guided into the air supply channel 5 through the vent holes of the air inlet cover, the air supply channel 5 comprises a first air supply pipe and a second air supply pipe which are arranged independently, the vent holes are connected with a connecting pipe, one end of the connecting pipe far away from the vent holes is respectively communicated with the first air supply pipe and the second air supply pipe, the first air supply pipe is communicated with the boss 43 on the left side of the smoke guide surface 41 at one end of the first air supply pipe far away from the connecting pipe, the second air supply pipe is, so that the blower fan 7 is rotated to deliver the outside air to the bosses 43 on the left and right sides of the smoke guide surface 41, respectively, to be ejected from the air ejection port 42.
In this embodiment, when a user cooks, the range hood is turned on to work, the fan assembly 2 and the air supply fan 7 are started, the fan assembly 2 generates an upward suction force to drive an external air flow and oil smoke to flow into the smoking part 3 of the smoke collecting hood 1 from the smoke inlet, and then to be discharged out of the room from the smoke exhaust duct of the range hood after passing through the fan assembly 2, meanwhile, the air supply fan 7 guides the external air into the air supply channel 5 from the air inlet cover, the air entering the air supply channel 5 is respectively ejected from the air outlets 42 of the bosses 43 on the left and right sides of the smoke guide surface 41, due to the gas viscosity effect, the air ejected from the air outlets 42 on both sides of the smoke guide surface 41 returns back and flows back after sequentially passing through the smoke guide surface 41, the first side surface 61, the second side surface 62 and the third side surface 63, so that the air flow turns and rotates to generate a swirling air flow, and a spiral, therefore, the oil smoke is upwards and spirally absorbed and gathered before being diffused so as to prevent the oil smoke from being diffused and escaping, and further the effect of efficiently gathering the oil smoke is achieved, in addition, the tornado effect causes the negative pressure to be reduced, the acting distance of the same negative pressure is prolonged by at least 0.5m, and therefore the oil smoke can directly reach the position of the cookware to directly carry out the smoking work from the source.
Example two:
as shown in fig. 1, 2, 3 and 5, the present embodiment provides a range hood, including the range hood described in the first embodiment, and the specific structure of the range hood can refer to fig. 1 to 4, which is not described herein again. The range hood in the second embodiment includes the range hood described in the first embodiment, so that the range hood has all the advantages of the range hood in the first embodiment, for example, a cyclone effect can be formed in a process of sucking oil fume by the range hood, so that the oil fume is prevented from diffusing and escaping, and an effect of efficiently collecting the oil fume is achieved.
The same as the first embodiment, the range hood is provided with the smoking part 3 at the upper position of the smoke collecting hood 1, the smoke guiding part 4 is arranged below the smoke collecting hood 1, the outside air is blown out from the air outlets 42 on the two sides of the smoke guiding surface 41 to the cyclone piece 6 at the middle position of the smoke guiding surface 41 after passing through the air supply channel 5, the airflow blown out from the air outlets 42 on the two sides of the smoke guiding surface 41 sequentially passes through the smoke guiding surface 41 and the cyclone piece 6 and then turns and rotates to form an air curtain, and due to the gas wall attachment effect, the cyclone flow passing through the smoke guiding part 4 is matched with the suction force of the fan component 2 of the range hood itself, so as to form unique spiral airflow, and further the range hood forms the rotary suction gathering effect before the oil smoke gas is diffused.
Different from the first embodiment, the air inlet end of the air supply channel 5 communicates with the air outlet of the fan assembly 2 to convey air flow in the past air supply channel 5, that is, the air supply pipeline is installed in the smoke collecting hood 1 and the box assembly, the air supply pipeline is provided with a protruding air inlet head at one end far away from the air nozzle 42, the air inlet end of the air inlet head is installed at the air outlet position or the air outlet seat position of the fan assembly 2, during the operation of the fan assembly 2, part of air flow discharged outwards flows into the air supply pipeline through the air inlet end of the air inlet head, and then flows out from the air nozzles 42 on two sides of the smoke guide surface 41.
In this embodiment, when a user cooks, the range hood is turned on to work, the fan assembly 2 and the air supply fan 7 are started, the fan assembly 2 generates upward suction force to drive outside airflow and oil smoke to flow into the smoking part 3 of the smoke collecting hood 1 from the smoke inlet, most of the airflow passes through the fan assembly 2 and is discharged out of the room from the smoke exhaust pipeline of the range hood, a small part of the airflow flows into the air supply pipeline from the air inlet end of the air inlet head, the air entering the air supply channel 5 is respectively ejected from the air outlets 42 of the bosses 43 on the left and right sides of the smoke guide surface 41, due to the gas viscosity effect, the air ejected from the air outlets 42 on the two sides of the smoke guide surface 41 returns back and flows back after sequentially flowing through the smoke guide surface 41, the first side surface 61, the second side surface 62 and the third side surface 63, so that the airflow turns and rotates to generate swirling airflow, and a spiral upward airflow is formed under, therefore, the oil smoke is upwards and spirally absorbed and gathered before being diffused so as to prevent the oil smoke from being diffused and escaping, and further the effect of efficiently gathering the oil smoke is achieved, in addition, the tornado effect causes the negative pressure to be reduced, the acting distance of the same negative pressure is prolonged by at least 0.5m, and therefore the oil smoke can directly reach the position of the cookware to directly carry out the smoking work from the source.
Example three:
as shown in fig. 1, 2, 3, 6 and 7, the present embodiment provides a range hood, including the range hood described in the first embodiment, and the specific structure of the range hood can refer to fig. 1 to 4, which is not described herein again. The range hood in the third embodiment includes the range hood described in the first embodiment, so that the range hood has all the advantages of the range hood in the first embodiment, for example, a cyclone effect can be formed in a process of sucking oil fume by the range hood, so that the oil fume is prevented from diffusing and escaping, and an effect of efficiently collecting the oil fume is achieved.
The same as the first embodiment, the range hood is provided with the smoking part 3 at the upper position of the smoke collecting hood 1, the smoke guiding part 4 is arranged below the smoke collecting hood 1, the outside air is blown out from the air outlets 42 on the two sides of the smoke guiding surface 41 to the cyclone piece 6 at the middle position of the smoke guiding surface 41 after passing through the air supply channel 5, the airflow blown out from the air outlets 42 on the two sides of the smoke guiding surface 41 sequentially passes through the smoke guiding surface 41 and the cyclone piece 6 and then turns and rotates to form an air curtain, and due to the gas wall attachment effect, the cyclone flow passing through the smoke guiding part 4 is matched with the suction force of the fan component 2 of the range hood itself, so as to form unique spiral airflow, and further the range hood forms the rotary suction gathering effect before the oil smoke gas is diffused.
Different from the first embodiment, the fan assembly 2 includes a motor, a main fan mechanism 21 and an auxiliary fan mechanism 22, wherein the main fan mechanism 21 has the same structure as the fan of the fan assembly 2 in the first embodiment, and the main fan mechanism 21 and the auxiliary fan mechanism 22 are both configured to discharge outside air flow and oil smoke through the smoke exhaust part 3 by the rotation of the fan in the fan assembly 2, in this embodiment, the motor in the fan assembly 2 is provided with a first rotating shaft and a second rotating shaft, that is, the first rotating shaft is disposed at the front end of the motor 2, the second rotating shaft is disposed at the rear end of the motor 2, the first rotating shaft is connected to the main fan mechanism 21, the second rotating shaft is connected to the auxiliary fan mechanism 22, the motor drives the main fan mechanism 21 and the auxiliary fan mechanism 22 to rotate coaxially, the main fan mechanism 21 is communicated with the smoke exhaust part 3, the top wall of the smoke collecting hood 1 is provided with a ventilation opening, one end of the auxiliary fan mechanism 22 is communicated, the other end of the auxiliary fan mechanism 22 is communicated with the air inlet end of the air supply channel 5 to convey airflow in the air supply channel 5, the air suction and exhaust directions of the main fan mechanism 21 and the auxiliary fan mechanism 22 are just opposite, the main fan mechanism 21 sucks air through the area of the smoke suction part 3 below the smoke collecting hood 1, the smoke is exhausted outside after passing through the smoke collecting hood 1, the main fan mechanism and the air outlet seat, and the airflow flows from bottom to top; the auxiliary fan mechanism 22 sucks air from the ventilation opening at the top of the smoke collecting hood 1 to suck external air from the ventilation opening at the top of the smoke collecting hood 1, then the external air passes through the auxiliary fan mechanism to be guided into the air supply duct, the air flow entering the air supply duct is ejected from the air ejection openings 42 at two sides of the smoke guide surface 41, and the direction of the air flow flows from top to bottom.
In the embodiment, when a user cooks, the range hood is turned on to work, the main fan mechanism 21 and the auxiliary fan mechanism 22 are simultaneously started by the motor, the main fan mechanism 21 generates upward suction force to drive outside airflow and lampblack to flow into the smoking part 3 of the smoke collecting hood 1 from the smoke inlet, the airflow passes through the fan assembly 2 and then is discharged out of the room from the smoke exhaust pipeline of the range hood, meanwhile, the auxiliary fan mechanism 22 guides the gas at the top of the smoke collecting hood 1 into the air supply channel 5 through the ventilation opening, the gas entering the air supply channel 5 is respectively ejected from the air nozzles 42 of the bosses 43 at the left and right sides of the smoke guide surface 41, due to the gas viscosity effect, the gas ejected from the air nozzles 42 at the two sides of the smoke guide surface 41 sequentially flows through the smoke guide surface 41, the first side surface 61, the second side surface 62 and the third side surface 63 and then turns back and rotates to generate swirling flow, and spiral upward airflow is formed under the cooperation of the upward suction force generated by, therefore, the oil smoke is upwards and spirally absorbed and gathered before being diffused so as to prevent the oil smoke from being diffused and escaping, and further the effect of efficiently gathering the oil smoke is achieved, in addition, the tornado effect causes the negative pressure to be reduced, the acting distance of the same negative pressure is prolonged by at least 0.5m, and therefore the oil smoke can directly reach the position of the cookware to directly carry out the smoking work from the source.
Example four:
the present embodiment provides a control method of a range hood, which is applied to the range hood described in the first embodiment, the range hood described in the second embodiment, or the range hood described in the third embodiment, and is the same as the range hoods described in the first to third embodiments, the range hood is provided with a smoke suction part at an upper position of a smoke collection hood, the smoke suction part is provided with a smoke guide part at a lower position of the smoke collection hood, an air curtain fan is provided at the smoke guide part, by blowing outside air from air nozzles at two sides of the smoke guide surface to a cyclone component at a middle position of the smoke guide surface after passing through an air supply channel, airflow blown out from air nozzles at two sides of the smoke guide surface sequentially passes through the smoke guide surface and the cyclone component and then turns and rotates to form an air curtain, due to a gas wall attachment effect, the rotational flow of the smoke guide part matches with a suction force of a fan component of the range hood itself, thereby forming unique spiral airflow and further forming a rotary suction gathering effect before the oil fume gas is diffused in the range hood.
In order to form a stable rotary suction gathering effect, the flow ratio between the air volume of the exhaust fan and the air volume of the air curtain must be controlled to meet the following preset condition QAir curtain：QSmoke machineRange of 0.016 to 0.026, wherein Q isAir curtainThe air quantity Q of the air curtain fanSmoke machineThe air quantity of the exhaust fan is within the flow proportioning range, and the rotary suction gathering effect can be formed.
Therefore, different control modes of the smoke machine fan are set according to different working conditions, a constant torque mode is set under a high wind pressure working condition, and a constant flow mode is set under a low wind pressure working condition. Meanwhile, the constant torque mode is divided into 3 sections, the first section of flow interval is Q1-Q2, the second section of flow interval is Q2-Q3, the third section of flow interval is Q3-Q4, and the 4 th section of flow interval is a working condition section Q4 with constant flow.
In the constant-torque working interval, the rotating speed n is reduced along with the increase of the flow rate, and the current flow rate interval in the constant-torque mode can be determined according to the current rotating speed of the exhaust fan motor (if n1 < n2, the exhaust fan of the smoke machine is in the second flow rate interval). If the current is in the constant-flow working interval, the current can be determined according to the current of the motor under the current working condition. After the exhaust fan is in which mode and which flow interval according to the motor current and the rotating speed information, the current air quantity range of the range hood is determined, and at the moment, the air quantity of the air curtain fan can be actively regulated, so that a stable rotary suction gathering effect is formed.
The air curtain fan can adopt PWM to carry out speed regulation, and then adjusts the flow of air curtain fan, and when detecting that the cigarette machine operation is in the constant flow interval, it is d1 to adjust air curtain fan duty cycle, guarantees Q this momentAir curtain: q4 ═ 0.016 to 0.026 range; in the 3 rd interval, the duty ratio is adjusted to d2, and Q is ensured at the momentAir curtain: (Q4+ Q3)/2) ═ 0.016 to 0.026 range; in the section 2, the duty ratio is adjusted to d3, and Q is ensuredAir curtain: (Q3+ Q2)/2) ═ 0.016 to 0.026 range; in the interval 1, the duty ratio is adjusted to d4, and Q is ensuredAir curtain: (Q2+ Q1)/2) ranging from 0.016 to 0.026.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (13)
1. The utility model provides a range hood, includes collection petticoat pipe (1) and fan subassembly (2), wherein collection petticoat pipe (1) top position department is provided with and is used for the smoking portion (3) of discharging fume outward, fan subassembly (2) set up in the top of collection petticoat pipe (1) just the air intake of fan subassembly (2) with smoking portion (3) intercommunication, its characterized in that still including setting up smoke guide portion (4) and the setting of smoking portion (3) below position department are in air supply channel (5) on collection petticoat pipe (1), wherein smoke guide portion (4) have lead smoke face (41) lead the both sides of smoke face (41) seted up a plurality of jet orifice (42) respectively so that both sides air current that jet orifice (42) spun by the both sides of leading smoke face (41) flow toward its middle direction the intermediate position department of smoke guide face (41) is toward extending outward and is provided with whirlwind spare (6) so that the air current that makes it flow through produces the whirl, the air outlet end of the air supply channel (5) is communicated with the air jet opening (42), and the air inlet end of the air supply channel (5) is communicated with the outside to convey air flow in the air supply channel (5).
2. The range hood according to claim 1, wherein the cyclone member (6) has two first side surfaces (61), a second side surface (62) and a third side surface (63) which are symmetrically arranged, wherein one end of the first side surface (61) is connected with the smoke guide surface (41), and the other end of the first side surface (61) extends outwards and is connected with the third side surface (63) through the second side surface (62).
3. The range hood according to claim 2, wherein the first side surface (61) and the third side surface (63) are both planar structures, and an included angle between the first side surface (61) and the third side surface (63) is an obtuse angle.
4. A range hood according to claim 3, wherein the angle between the first side surface (61) and the third side surface (63) is 5 ° to 30 °.
5. The range hood according to claim 2, wherein the second side surface (62) is a circular arc transition surface so that a circular arc transition connection is realized between the first side surface (61) and the third side surface (63) through the second side surface (62).
6. A range hood according to claim 5, characterized in that the diameter of the second side (62) is 60mm to 120 mm.
7. A range hood according to claim 2, characterised in that a fourth side (64) is provided in connection between the third sides (63).
8. A range hood according to claim 7, wherein the distance between the fourth side surface (64) and the smoke guiding surface (41) is more than 60 mm.
9. The range hood according to claim 1, wherein bosses (43) are convexly provided on both sides of the smoke guide surface (41) in the vertical direction, and the air outlets (42) are provided on the opposite side walls of the bosses (43).
10. The range hood according to any one of claims 1 to 9, further comprising a supply fan (7), wherein the supply fan (7) is disposed on the top of the exhaust fume collecting hood (1), and the supply fan (7) is communicated with the air inlet end of the supply passage (5) to convey airflow in the supply passage (5).
11. The range hood according to any one of claims 1 to 9, wherein an air inlet end of the air supply channel (5) is communicated with an air outlet of the fan assembly (2) to convey air flow into the air supply channel (5).
12. The range hood according to any one of claims 1 to 9, wherein the fan assembly (2) comprises a motor, a main fan mechanism (21) and an auxiliary fan mechanism (22), wherein the motor has a first rotating shaft and a second rotating shaft, the first rotating shaft is connected with the main fan mechanism (21), the second rotating shaft is connected with the auxiliary fan mechanism (22), the motor drives the main fan mechanism (21) and the auxiliary fan mechanism (22) to coaxially rotate, the main fan mechanism (21) is communicated with the smoke suction portion (3), and the auxiliary fan mechanism (22) is communicated with the air inlet end of the air supply channel (5) to convey air flow in the air supply channel (5).
13. A control method of a range hood, characterized by comprising the range hood as claimed in any one of claims 1 to 12, the control method of the range hood comprising the steps of:
the flow ratio of the air volume at the air jet and the air volume at the smoking part is 0.016 to 0.026.
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| CN202011123787.2A CN112377960A (en) | 2020-10-20 | 2020-10-20 | Range hood and control method |
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| CN202011123787.2A CN112377960A (en) | 2020-10-20 | 2020-10-20 | Range hood and control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049072A (en) * | 2021-03-12 | 2021-06-29 | 中国五冶集团有限公司 | Weighing device with flow equalizing air curtain structure in clean room |
| CN113405132A (en) * | 2021-06-23 | 2021-09-17 | 海信(广东)厨卫***股份有限公司 | Smoke collecting hood and using method thereof |
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| WO2005019736A1 (en) * | 2003-08-13 | 2005-03-03 | Halton Company | Exhaust hood enhanced by configuration of flow jets |
| CN111089320A (en) * | 2019-12-31 | 2020-05-01 | 华帝股份有限公司 | Fume exhaust fan |
| CN111256187A (en) * | 2020-03-02 | 2020-06-09 | 华帝股份有限公司 | Integrated kitchen with center air curtain and side air curtain |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005019736A1 (en) * | 2003-08-13 | 2005-03-03 | Halton Company | Exhaust hood enhanced by configuration of flow jets |
| CN111089320A (en) * | 2019-12-31 | 2020-05-01 | 华帝股份有限公司 | Fume exhaust fan |
| CN111256187A (en) * | 2020-03-02 | 2020-06-09 | 华帝股份有限公司 | Integrated kitchen with center air curtain and side air curtain |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049072A (en) * | 2021-03-12 | 2021-06-29 | 中国五冶集团有限公司 | Weighing device with flow equalizing air curtain structure in clean room |
| CN113405132A (en) * | 2021-06-23 | 2021-09-17 | 海信(广东)厨卫***股份有限公司 | Smoke collecting hood and using method thereof |
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Application publication date: 20210219 |