CN117646926A

CN117646926A - Smoke exhaust ventilator and smoke exhaust method

Info

Publication number: CN117646926A
Application number: CN202311650092.3A
Authority: CN
Inventors: 曾元泰; 李艺文; 何昌羲; 王阳; 夏俊贤; 赵泽华
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2023-12-04
Filing date: 2023-12-04
Publication date: 2024-03-05

Abstract

The invention provides a smoke exhaust ventilator and a smoke exhaust method, which belong to the technical field of kitchen appliances. The rotary driving device drives the air suction device to rotate so that air suction inlets of the air suction device face different air inlets. According to the range hood, the air suction openings of the air suction device can be adjusted according to the oil smoke distribution conditions of different air inlets, the oil smoke extraction effect can be improved, and the smoothness of oil smoke emission is ensured.

Description

Smoke exhaust ventilator and smoke exhaust method

Technical Field

The invention relates to the technical field of kitchen appliances, in particular to a smoke exhaust ventilator and a smoke exhaust method.

Background

With the improvement of living standard of people, kitchen equipment is also continuously upgraded. The range hood is an indispensable device in the kitchen, and its function and performance directly affect the comfort of the kitchen environment. However, the existing range hood generally has the problems of unsmooth oil smoke emission, high noise, difficult cleaning and the like in the use process. In order to solve the problem that the oil smoke emission of the existing range hood is not smooth, manufacturers can usually replace a high-power motor to drive the fan blades, so that the production cost of the range hood is increased, and the noise of the range hood is increased. The prior art discloses a cyclone type supercharging smoke ventilator, which comprises a smoke gathering cover, a blower and a smoke feeding pipe, wherein the top end of the smoke gathering cover is connected with a turbocharger, a cyclone cylinder is connected between the turbocharger and the smoke feeding pipe, and the blower is arranged outside the turbocharger and is communicated with the turbocharger. The cyclone cylinder is conical with a small upper part and a large lower part. The range hood can effectively drive the lower range hood to enter the suction pipeline and be discharged outdoors, and has good fume suction effect.

However, the air suction direction of the range hood is fixed, the air suction direction cannot be changed according to the needs, and the range hood cannot be extracted for different positions, so that the range hood still has room for improvement.

Disclosure of Invention

In order to overcome the problems in the related art, one of the purposes of the invention is to provide a range hood, which can adjust the air suction inlet of the air suction device according to the oil smoke distribution conditions of different air inlets, improve the oil smoke extraction effect and ensure the smooth oil smoke discharge.

The smoke exhaust ventilator comprises a shell, wherein the bottom of the shell is provided with a plurality of air inlets, an air suction device and a rotary driving device are arranged in the shell, and the air suction device is hinged in the shell; the rotary driving device drives the air suction device to rotate, so that air suction inlets of the air suction device face different air inlets.

In the use process of the range hood, a user can adjust the direction of the air suction opening of the air suction device according to the condition of the cooking range corresponding to each air inlet, so that the air suction opening faces towards the cooking range with larger oil smoke, and the air suction device can directly extract the oil smoke, thereby being beneficial to improving the extraction effect of the oil smoke and ensuring the smooth oil smoke discharge.

In a preferred technical scheme of the invention, the shell comprises a first shell and a second shell which are communicated with each other, a connecting section is arranged between the first shell and the second shell, and a plurality of air inlets are arranged at the bottom of the first shell; the air suction device and the rotary driving device are both arranged in the connecting section.

Different air inlets through the first shell correspond to different cooking ranges, so that the air suction device can pertinently conduct oil smoke extraction operation, and the oil smoke exhaust efficiency can be improved.

In a preferred technical scheme of the invention, the air suction device comprises an air duct, a wind wheel and a first motor, wherein the outer wall of the air duct is hinged with the inner wall of the connecting section through a bearing, the wind wheel and the first motor are both fixed in the air duct, and the output end of the first motor is fixedly connected with the wind wheel.

In the adjustment process of the air suction port of the air suction device, the wind wheel and the first motor are driven to rotate through rotation of the whole air duct, and the first motor drives the wind wheel to rotate, so that the wind wheel can attract smoke.

In a preferred technical scheme of the invention, the rotation driving device comprises a hand wheel and a connecting rod, wherein the hand wheel is fixed on the outer wall of the shell, and the connecting rod is connected between the hand wheel and the bearing.

The embodiment provides the manual regulation mode of device that induced drafts for the hand wheel drives the connecting rod rotation through rotating the hand wheel, thereby drives the bearing rotation, realizes the orientation regulation of the inlet scoop of device that induced drafts.

In a preferred technical scheme of the invention, the rotary driving device comprises a second motor and a transmission shaft, one end of the transmission shaft is fixedly connected with the output end of the second motor, the opposite end is fixedly connected with the bearing, and the second motor drives the bearing to rotate through the transmission shaft;

and a smoke detector is arranged on the air inlet and is electrically connected with the second motor.

The application detects the flue gas concentration of different induced draft ports through the flue gas detector to utilize second motor drive induced draft device to rotate, realize the automatically regulated of induced draft port, make smoke ventilator's use more convenient.

In a preferred technical scheme of the invention, the air duct comprises a first air shell and a second air shell which are connected with each other, an air flow inlet is arranged on the first air shell, an air flow outlet is arranged on the second air shell, the wind wheel is fixed in the first air shell, and the first motor is fixed in the second air shell;

the outer walls of the first air shell and the second air shell are arc-shaped; along the flowing direction of the gas, the cross section area of the first air shell gradually becomes larger from the air flow inlet to the second air shell side, and the cross section area of the second air shell gradually becomes smaller from one side of the first air shell to the air flow outlet.

In the air duct, along the flowing direction of the gas, the flowing area of the gas is changed from small to large to small, and the flow speed of the flue gas in the air duct can be improved by the design of the air duct, so that the flue gas can be discharged more quickly.

In a preferred technical scheme of the invention, a wind shield is arranged in the second wind shell, the wind shield is arranged close to the airflow outlet, a motor fixing position is arranged on the wind shield, and a plurality of air passing openings are arranged on the wind shield;

the air flow outlet is connected with a smoke exhaust pipe.

The deep bead can provide mounted position for the motor on the one hand, and on the other hand the setting of deep bead makes the flow area of flue gas in air current exit diminish to can increase the pressure of flue gas here, improve the velocity of flow of flue gas, make the flue gas get into the exhaust pipe more fast and be discharged.

In a preferred technical scheme of the invention, the wind wheel comprises a guide ring and a blade hub, wherein the blade hub is arranged on one side of the guide ring, a blade mounting position is formed between the guide ring and the blade hub, a plurality of blades are arranged in the blade mounting position, and the blades are arranged in the blade mounting position along the circumferential direction of the blade hub;

the fan blade hub is characterized in that a connecting plate is arranged in the middle of the fan blade hub, the output end of the first motor is fixedly connected with the connecting plate, and a plurality of air passing holes are formed in the connecting plate.

In the rotating process of the wind wheel, air flow enters from the guide ring, part of the air flow flows out from the blades along the radial direction of the guide ring, and part of the air flow enters the downstream of the wind wheel through the wind passing holes. The radial outflow air flow along the guide ring forms a tornado shape inside the air duct under the action of the arc-shaped outer walls of the first shell and the second shell, so that stronger suction force is formed, and the suction effect of smoke can be effectively improved.

In the preferred technical scheme of the invention, the air suction device is provided with an air outlet, and the air inlet and the air outlet are provided with filter screens.

The filter screen is used for removing grease and harmful substances in the smoke and improving the cleanliness of the discharged smoke.

Another object of the present invention is to provide a fume exhausting method, which is implemented based on the fume exhaust fan as described above, the fume exhausting method comprising the steps of:

acquiring the oil smoke distribution conditions of different air inlets;

according to the lampblack distribution conditions of different lampblack inlets, the direction of the lampblack inlet of the lampblack suction device is adjusted, so that the lampblack inlet faces to the air inlet with the largest lampblack, and the lampblack suction device is started to suck lampblack.

The beneficial effects of the invention are as follows:

the invention provides a range hood, which comprises a shell, wherein the bottom of the shell is provided with a plurality of air inlets, an air suction device and a rotary driving device are arranged in the shell, and the air suction device is hinged in the shell. The rotary driving device drives the air suction device to rotate so that air suction inlets of the air suction device face different air inlets. In the use, the different air intakes of shell are towards different kitchen tops, and the culinary art mode of different kitchen tops is different, and the oil smoke that often produces is also different, and the oil smoke that produces like the kitchen top that the stir-fry was used is great. Users can adjust the direction of the air suction opening of the air suction device according to the conditions of each cooking range, so that the air suction opening faces towards the cooking range with larger lampblack, the air suction device can directly extract lampblack, the lampblack extraction effect is improved, and the lampblack discharge is ensured to be smooth. The steerable air suction device can fully exert the oil smoke extraction effect under the condition of limited motor power, which is helpful for reducing the manufacturing cost of the smoke exhaust ventilator and the operation noise of the smoke exhaust ventilator.

The application also provides a lampblack exhausting method implemented based on the lampblack exhauster, and the lampblack exhausting method can adjust the direction of the air suction opening of the air suction device according to the lampblack distribution condition, can reduce energy consumption and ensure the lampblack extracting effect of the lampblack exhauster.

Drawings

Fig. 1 is a perspective view of a range hood provided by the invention;

fig. 2 is a perspective view of the inside of the range hood provided by the present invention;

FIG. 3 is a schematic view of the structure of the interior of the housing provided by the present invention;

fig. 4 is a schematic structural view of the air suction device provided by the invention in the interior of the casing;

fig. 5 is a perspective view of an air suction device provided by the invention;

FIG. 6 is a schematic structural view of an air duct provided by the present invention;

FIG. 7 is a schematic view of the structure of the air suction device rotating inside the casing;

FIG. 8 is a schematic view of the structure of the airflow provided by the invention flowing inside the housing;

FIG. 9 is a schematic view of a rotary drive device provided by the present invention including a head wheel and a connecting rod;

fig. 10 is a schematic structural view of a rotary driving device provided by the invention, including a second motor and a transmission shaft;

fig. 11 is a flowchart of the oil fume exhaust method provided by the present invention.

Reference numerals:

1. a housing; 11. a first housing; 111. an air inlet; 112. a filter screen; 12. a connection section; 13. a second housing; 2. a smoke exhaust pipe; 3. an air suction device; 31. a wind deflector; 311. an air port; 32. a first motor; 33. an air duct; 331. a first air shell; 332. a second air shell; 34. a wind wheel; 341. a guide ring; 342. a blade; 343. a fan blade hub; 344. a connecting plate; 345. a wind hole; 35. an air flow inlet; 36. an air flow outlet; 4. a bearing; 5. a hand wheel; 51. a connecting rod; 6. a second motor; 61. a transmission shaft; 7. a smoke detector.

Detailed Description

Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In order to solve the problem that the oil smoke emission of the existing range hood is not smooth, manufacturers can usually replace a high-power motor to drive the fan blades, so that the production cost of the range hood is increased, and the noise of the range hood is increased. The prior art discloses a cyclone type supercharging smoke ventilator, which comprises a smoke gathering cover, a blower and a smoke feeding pipe, wherein the top end of the smoke gathering cover is connected with a turbocharger, a cyclone cylinder is connected between the turbocharger and the smoke feeding pipe, and the blower is arranged outside the turbocharger and is communicated with the turbocharger. The cyclone cylinder is conical with a small upper part and a large lower part. The range hood can effectively drive the lower range hood to enter the suction pipeline and be discharged outdoors, and has good fume suction effect. However, the air suction direction of the range hood is fixed, the air suction direction cannot be changed according to the needs, and the range hood cannot be extracted for different positions. Based on this, the application provides a range hood.

Example 1

As shown in fig. 1-10, the range hood provided in this embodiment includes a housing 1, a plurality of air inlets 111 are provided at the bottom of the housing 1, an air suction device 3 and a rotation driving device are provided in the housing 1, and the air suction device 3 is hinged in the housing 1. The rotation driving device drives the air suction device 3 to rotate, so that the air suction openings of the air suction device 3 face different air inlets 111. In practical application, the air inlet 111 is provided with a filter screen 112 and an oil blocking grid, and the filter screen 112 is used for removing grease and harmful substances in the flue gas and improving the cleanliness of the discharged flue gas. The oil baffle grille is used for collecting oil smoke and preventing the oil smoke from escaping into kitchen air. The filter screen 112 can be arranged on one side wall of the oil baffle grid, and the filter screen 112 and the oil baffle grid are arranged together, so that the cleaning capability of kitchen smoke can be improved.

Specifically, the hinge manner of the present application may be that the air suction device 3 is connected with the casing 1 through a rotating shaft or hinged with the casing 1 through a spherical hinge. It should be clear that different hinging means need to be driven by different rotary driving means, so that the suction device 3 can be rotated by a set angle as required.

In the use, the different air intakes 111 of shell 1 are towards different kitchen tops, and the culinary art mode of different kitchen tops is different, and the oil smoke that often produces is also different, and the oil smoke that produces is great for the kitchen top that stir-fry used. The user can adjust the direction of the inlet scoop of device 3 according to the condition of each kitchen range for the inlet scoop is towards the great kitchen range of oil smoke, makes device 3 that induced drafts can directly extract the oil smoke, helps improving the extraction effect of oil smoke, guarantees that the oil smoke discharges smoothly. The steerable air suction device 3 can fully exert the oil smoke extraction effect under the condition of limited motor power, which is helpful for reducing the manufacturing cost of the smoke exhaust ventilator and the operation noise of the smoke exhaust ventilator.

It should be noted that, except including shell 1, induced draft device 3 and rotary drive device, the smoke ventilator of this application still includes control system, display screen and operating panel, and display screen, operating panel all with control system, the display screen can show smoke ventilator's operating condition, and control panel is used for carrying out intelligent control to smoke ventilator.

Example 2

As shown in fig. 1 to 10, the present embodiment includes the above-mentioned range hood, which includes a housing 1, a plurality of air inlets 111 are provided at the bottom of the housing 1, an air suction device 3 and a rotation driving device are provided in the housing 1, and the air suction device 3 is hinged in the housing 1. The rotation driving device drives the air suction device 3 to rotate, so that the air suction openings of the air suction device 3 face different air inlets 111.

In this embodiment, the housing 1 includes a first casing 11 and a second casing 13 that are mutually communicated, a connection section 12 is disposed between the first casing 11 and the second casing 13, and a plurality of air inlets 111 are disposed at the bottom of the first casing 11; the air suction device 3 and the rotary driving device are both arranged in the connecting section 12.

Different cooking ranges are corresponding to different air inlets 111 of the first shell 11, so that the air suction device 3 can pertinently perform oil smoke extraction operation, and the oil smoke discharge efficiency can be improved.

The first housing 11, the second housing 13, and the connection section 12 of the present application may be made of stainless steel or aluminum alloy. The first housing 11, the second housing 13, and the connection may be fixed to each other by bolts, or may be welded to form the whole structure of the housing 1.

Example 3

The shell 1 comprises a first shell 11 and a second shell 13 which are communicated with each other, a connecting section 12 is arranged between the first shell 11 and the second shell 13, and a plurality of air inlets 111 are formed in the bottom of the first shell 11; the air suction device 3 and the rotary driving device are both arranged in the connecting section 12.

In this embodiment, the air suction device 3 includes an air duct 33, a wind wheel 34, and a first motor 32, the outer wall of the air duct 33 is hinged to the inner wall of the connecting section 12 through a bearing 4, the wind wheel 34 and the first motor 32 are both fixed in the air duct 33, and the output end of the first motor 32 is fixedly connected with the wind wheel 34.

The outer wall of the bearing 4 and the outer side wall of the air duct 33 are fixed with each other, the inner ring of the bearing 4 can rotate, and the outer wall of the air duct 33 can be arranged on a rotating shaft with the inner ring of the bearing 4 fixed with each other, so that the air duct 33 can rotate inside the shell 1 through the mutual matching with the bearing 4.

In the adjustment process of the air suction port of the air suction device 3, the wind wheel 34 and the first motor 32 are driven to rotate by the rotation of the whole air duct 33, so that the air inlet direction of the wind wheel 34 is changed, and the adjustment of the air suction port is realized. In the process of absorbing the smoke, the first motor 32 drives the wind wheel 34 to rotate, so that the wind wheel 34 can absorb the smoke.

Example 4

The air suction device 3 comprises an air duct 33, a wind wheel 34 and a first motor 32, wherein the outer wall of the air duct 33 is hinged with the inner wall of the connecting section 12 through a bearing 4, the wind wheel 34 and the first motor 32 are both fixed in the air duct 33, and the output end of the first motor 32 is fixedly connected with the wind wheel 34.

In this embodiment, the rotation driving device includes a hand wheel 5 and a connecting rod 51, the hand wheel 5 fixes the outer wall of the housing 1, and the connecting rod 51 is connected between the hand wheel 5 and the bearing 4.

As shown in fig. 9, the present embodiment provides a manual adjustment manner of the air suction device 3, and by rotating the hand wheel 5, the hand wheel 5 drives the connecting rod 51 to rotate, thereby driving the bearing 4 to rotate, and realizing the direction adjustment of the air suction port of the air suction device 3.

In practical applications, the setting position of the hand wheel 5 cannot be too high, so that inconvenient adjustment in use is avoided. The hand wheel 5 can be a plum blossom wheel to save the force in the adjustment process. In addition, one end of the connecting rod 51 may be fixedly connected with the inner ring of the bearing 4, so that the connecting rod 51 can drive the inner ring of the bearing 4 to rotate, and the inner ring of the bearing 4 is utilized to drive the air duct 33 to rotate.

More preferably, the connection of the connecting rod 51 with the inner ring of the bearing 4 may be provided with damping means so that a defined angle may be maintained during adjustment of the suction device 3. The damping device can be realized by adopting the existing damper.

Example 5

As shown in fig. 10, in the present embodiment, automatic adjustment of the air suction device 3 is provided. The rotary driving device comprises a second motor 6 and a transmission shaft 61, one end of the transmission shaft 61 is fixedly connected with the output end of the second motor 6, the opposite end is fixedly connected with the bearing 4, and the second motor 6 drives the bearing 4 to rotate through the transmission shaft 61; the air inlet 111 is provided with a smoke detector 7, and the smoke detector 7 is electrically connected with the second motor 6.

This application detects the flue gas concentration of different inlet scoop through flue gas detector 7 to utilize the rotation of second motor 6 drive air suction device 3, realize the automatically regulated of inlet scoop, make smoke ventilator's use more convenient.

In the use process, the smoke detector 7 can detect the smoke concentration of different air suction inlets after being started, and feeds back detection data to a control system of the smoke exhaust ventilator. The control system judges which air suction port has the largest smoke concentration according to the fed back data, and then controls the second motor 6 to start, so as to drive the air suction device 3 to rotate, and the air suction port of the air suction device 3 faces the air suction port with the largest smoke concentration. Finally, the first motor 32 is started to perform the oil smoke sucking operation. The smoke suction port faces to the smoke suction port with the largest smoke concentration, so that the smoke exhaust ventilator can directly suck the smoke in the area with the largest smoke exhaust ventilator, and the maximum effect of the smoke exhaust ventilator is exerted.

Example 6

The rotary driving device comprises a second motor 6 and a transmission shaft 61, one end of the transmission shaft 61 is fixedly connected with the output end of the second motor 6, the opposite end is fixedly connected with the bearing 4, and the second motor 6 drives the bearing 4 to rotate through the transmission shaft 61; the air inlet 111 is provided with a smoke detector 7, and the smoke detector 7 is electrically connected with the second motor 6.

In this embodiment, the air duct 33 includes a first air shell 331 and a second air shell 332 that are connected to each other, an air inlet 35 is provided on the first air shell 331, an air outlet 36 is provided on the second air shell 332, the wind wheel 34 is fixed in the first air shell 331, and the first motor 32 is fixed in the second air shell 332;

the outer walls of the first air shell 331 and the second air shell 332 are arc-shaped; the cross-sectional area of the first shell 331 gradually increases from the air inlet 35 to the second shell 332, and the cross-sectional area of the second shell 332 gradually decreases from the first shell 331 to the air outlet 36.

In the air duct 33, the flow area of the air is changed from small to large along the flow direction of the air, and the air duct 33 is designed to increase the flow velocity of the flue gas in the air duct 33, so that the flue gas can be discharged more quickly.

The first fan housing 331, the second fan housing 332 of this application can adopt the bolt mutual fixation between, adopt split type wind channel 33, can reduce the equipment degree of difficulty of induced draft device 3. The outer wall is an arc-shaped air shell, so that friction between the inner wall of the air shell and air flow can be reduced, and the oil smoke sucking effect of the air suction device 3 is improved.

Example 7

In this embodiment, the air duct 33 includes a first air shell 331 and a second air shell 332 that are connected to each other, an air inlet 35 is provided on the first air shell 331, an air outlet 36 is provided on the second air shell 332, the wind wheel 34 is fixed in the first air shell 331, and the first motor 32 is fixed in the second air shell 332; the outer walls of the first air shell 331 and the second air shell 332 are arc-shaped; the cross-sectional area of the first shell 331 gradually increases from the air inlet 35 to the second shell 332, and the cross-sectional area of the second shell 332 gradually decreases from the first shell 331 to the air outlet 36.

In this embodiment, a wind deflector 31 is disposed in the second wind shell 332, the wind deflector 31 is disposed near the air flow outlet 36, a motor fixing position is disposed on the wind deflector 31, and a plurality of air passing openings 311 are disposed on the wind deflector 31; the air flow outlet 36 is connected with the smoke exhaust pipe 2.

The air vents 311 may be uniformly distributed on the air deflector 31 in the circumferential direction of the air deflector 31.

The wind guard 31 can provide the mounted position for the motor on the one hand, and on the other hand the setting of wind guard 31 makes the flow area of flue gas in air current outlet 36 department diminish to can increase the pressure of flue gas here, improve the velocity of flow of flue gas, make the flue gas get into smoke tube 2 more fast and be discharged.

Example 8

The second wind shell 332 is provided with a wind deflector 31, the wind deflector 31 is arranged close to the air flow outlet 36, the wind deflector 31 is provided with a motor fixing position, and the wind deflector 31 is provided with a plurality of wind passing openings 311; the air flow outlet 36 is connected with the smoke exhaust pipe 2.

In this embodiment, the wind wheel 34 includes a guide ring 341 and a blade hub 343, the blade hub 343 is disposed on one side of the guide ring 341, a blade mounting position is formed between the guide ring 341 and the blade hub 343, a plurality of blades 342 are disposed in the blade mounting position, and the plurality of blades 342 are disposed in the blade mounting position along a circumferential direction of the blade hub 343;

the middle part of fan blade wheel hub 343 is provided with connecting plate 344, the output of first motor 32 with connecting plate 344 fixed connection, be provided with a plurality of through-air holes 345 on the connecting plate 344.

During the rotation of the wind wheel 34, the air flow enters from the guide ring 341, and at this time, the air flow flows along the axial direction of the guide ring 341. When the airflow flows through the guide ring 341, part of the airflow flows out of the blades 342 along the radial direction of the guide ring 341, and the part of the airflow is centrifugally diffused; the other part of the airflow continues to flow along the axial direction of the guide ring 341 through the wind passing holes 345 and enters the downstream of the wind wheel 34. Under the action of the arc-shaped outer walls of the first shell 11 and the second shell 13, the centrifugal diffused air flows along the axial direction in cooperation with the air flow, and forms a tornado shape in the air duct 33, so that stronger suction force is formed, and the suction effect of the smoke can be effectively improved.

Example 9

As shown in fig. 1 to 10, the present embodiment provides a smoke exhaust method, which is implemented based on the smoke exhaust ventilator as described above, the smoke exhaust ventilator includes a housing 1, a plurality of air inlets 111 are provided at the bottom of the housing 1, an air suction device 3 and a rotation driving device are provided in the housing 1, and the air suction device 3 is hinged in the housing 1. The rotation driving device drives the air suction device 3 to rotate, so that the air suction openings of the air suction device 3 face different air inlets 111.

The shell 1 comprises a first shell 11 and a second shell 13 which are communicated with each other, a connecting section 12 is arranged between the first shell 11 and the second shell 13, and a plurality of air inlets 111 are formed in the bottom of the first shell 11; the air suction device 3 and the rotary driving device are both arranged in the connecting section 12. The air suction device 3 comprises an air duct 33, a wind wheel 34 and a first motor 32, wherein the outer wall of the air duct 33 is hinged with the inner wall of the connecting section 12 through a bearing 4, the wind wheel 34 and the first motor 32 are both fixed in the air duct 33, and the output end of the first motor 32 is fixedly connected with the wind wheel 34. The rotary driving device comprises a second motor 6 and a transmission shaft 61, one end of the transmission shaft 61 is fixedly connected with the output end of the second motor 6, the opposite end is fixedly connected with the bearing 4, and the second motor 6 drives the bearing 4 to rotate through the transmission shaft 61; the air inlet 111 is provided with a smoke detector 7, and the smoke detector 7 is electrically connected with the second motor 6.

The air duct 33 includes a first air shell 331 and a second air shell 332 connected to each other, an air inlet 35 is provided on the first air shell 331, an air outlet 36 is provided on the second air shell 332, the wind wheel 34 is fixed in the first air shell 331, and the first motor 32 is fixed in the second air shell 332; the outer walls of the first air shell 331 and the second air shell 332 are arc-shaped; the cross-sectional area of the first shell 331 gradually increases from the air inlet 35 to the second shell 332, and the cross-sectional area of the second shell 332 gradually decreases from the first shell 331 to the air outlet 36.

Referring to fig. 11, the fume exhausting method includes the steps of:

s100, acquiring the oil smoke distribution conditions of different air inlets 111; the acquisition method can be acquired through the smoke detector 7, or can be manually judged by a user according to the site condition.

And S200, according to the oil smoke distribution conditions of different air suction ports, the air suction port direction of the air suction device 3 is adjusted, so that the air suction port faces to the air inlet 111 with the largest oil smoke, and the air suction device 3 is started to suck the oil smoke.

According to the method, the direction of the air suction opening of the air suction device 3 can be adjusted according to the distribution condition of the oil smoke, the energy consumption can be reduced, and the oil smoke extraction effect of the smoke exhaust ventilator is ensured.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are merely for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and thus should not be construed as limiting the scope of the present application.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A range hood comprising a housing (1), characterized in that: the bottom of the shell (1) is provided with a plurality of air inlets (111), the shell (1) is internally provided with an air suction device (3) and a rotary driving device, and the air suction device (3) is hinged in the shell (1); the rotary driving device drives the air suction device (3) to rotate, so that air suction inlets of the air suction device (3) face different air inlets (111).

2. A range hood according to claim 1, wherein:

the shell (1) comprises a first shell (11) and a second shell (13) which are communicated with each other, a connecting section (12) is arranged between the first shell (11) and the second shell (13), and a plurality of air inlets (111) are formed in the bottom of the first shell (11); the air suction device (3) and the rotary driving device are both arranged in the connecting section (12).

3. A range hood according to claim 2, wherein:

the air suction device (3) comprises an air duct (33), a wind wheel (34) and a first motor (32), wherein the outer wall of the air duct (33) is hinged with the inner wall of the connecting section (12) through a bearing (4), the wind wheel (34) and the first motor (32) are both fixed in the air duct (33), and the output end of the first motor (32) is fixedly connected with the wind wheel (34).

4. A range hood according to claim 3, wherein:

the rotary driving device comprises a hand wheel (5) and a connecting rod (51), wherein the hand wheel (5) is fixed on the outer wall of the shell (1), and the connecting rod (51) is connected between the hand wheel (5) and the bearing (4).

5. A range hood according to claim 3, wherein:

the rotary driving device comprises a second motor (6) and a transmission shaft (61), one end of the transmission shaft (61) is fixedly connected with the output end of the second motor (6), the opposite end is fixedly connected with the bearing (4), and the second motor (6) drives the bearing (4) to rotate through the transmission shaft (61);

the flue gas detector (7) is arranged on the air inlet (111), and the flue gas detector (7) is electrically connected with the second motor (6).

6. A range hood according to claim 3, wherein:

the air duct (33) comprises a first air shell (331) and a second air shell (332) which are connected with each other, an air flow inlet (35) is formed in the first air shell (331), an air flow outlet (36) is formed in the second air shell (332), the wind wheel (34) is fixed in the first air shell (331), and the first motor (32) is fixed in the second air shell (332);

along the flow direction of the gas, the cross-sectional area of the first air shell (331) gradually increases from the gas flow inlet (35) to the second air shell (332), and the cross-sectional area of the second air shell (332) gradually decreases from the first air shell (331) to the gas flow outlet (36).

7. A range hood according to claim 6, wherein:

a wind deflector (31) is arranged in the second wind shell (332), the wind deflector (31) is arranged close to the airflow outlet (36), a motor fixing position is arranged on the wind deflector (31), and a plurality of air passing openings (311) are arranged on the wind deflector (31);

the air flow outlet (36) is connected with a smoke exhaust pipe (2).

8. A range hood according to claim 6, wherein:

the wind wheel (34) comprises a guide ring (341) and a fan blade hub (343), the fan blade hub (343) is arranged on one side of the guide ring (341), a fan blade installation position is formed between the guide ring (341) and the fan blade hub (343), a plurality of fan blades (342) are arranged in the fan blade installation position, and the plurality of fan blades (342) are arranged in the fan blade installation position along the circumferential direction of the fan blade hub (343);

the fan blade hub (343) middle part is provided with connecting plate (344), the output of first motor (32) with connecting plate (344) fixed connection, be provided with a plurality of through-air holes (345) on connecting plate (344).

9. A range hood according to any one of claims 1 to 8 wherein:

an air outlet is formed in the air suction device (3), and filter screens (112) are arranged on the air inlet (111) and the air outlet.

10. A lampblack discharge method is characterized in that: implemented on the basis of a range hood according to any one of claims 1-9, the fume extraction method comprising the steps of:

acquiring the oil smoke distribution conditions of different air inlets (111);

according to the lampblack distribution conditions of different lampblack suction ports, the direction of the lampblack suction port of the lampblack suction device (3) is adjusted, so that the lampblack suction port faces to the air inlet (111) with the largest lampblack, and the lampblack suction device (3) is started to suck lampblack.