CN213272743U - Fume exhaust fan - Google Patents

Abstract

The utility model relates to a lampblack absorber solves the unable problem that prevents the oil smoke backward flow of lampblack absorber. The lampblack absorber includes the casing, bleed actuating mechanism and a actuating mechanism, be equipped with bleed passage on the casing, at least part bleed actuating mechanism locates bleed passage, bleed passage includes air inlet and gas outlet, bleed passage is located the air inlet with the part between the actuating mechanism of bleeding is the section of admitting air, bleed passage is located bleed actuating mechanism with part between the gas outlet is the section of giving vent to anger, an actuating mechanism with bleed actuating mechanism connects and is used for ordering about bleed actuating mechanism work works, works as an actuating mechanism orders about bleed actuating mechanism during operation is located the outer gas of bleed passage passes through the air inlet gets into in the bleed passage, and passes through the gas outlet discharges extremely outside the bleed passage.

Description

Fume exhaust fan

Technical Field

The invention relates to a range hood.

Background

The existing range hood comprises a casing, a motor and an impeller, wherein an air exhaust channel is arranged on the casing and comprises an air inlet and an air outlet, the impeller is arranged in the air exhaust channel, the motor is arranged on the casing and is connected with the impeller in a rotating mode, when the motor drives the impeller to rotate, oil smoke enters the air exhaust channel from the air inlet and is discharged to the outside of the range hood through the air outlet of the air exhaust channel, and therefore the range hood can discharge the smoke in the forward direction. However, the existing range hood cannot prevent the reverse backflow of the lampblack.

Disclosure of Invention

The invention aims to provide a range hood, which solves the problem that the range hood cannot prevent oil smoke from reversely flowing back.

In order to solve the above problems, the present invention provides the following technical solutions:

the lampblack absorber includes the casing, bleed actuating mechanism and a actuating mechanism, be equipped with bleed passage on the casing, at least part bleed actuating mechanism locates bleed passage, bleed passage includes air inlet and gas outlet, bleed passage is located the air inlet with the part between the actuating mechanism of bleeding is the section of admitting air, bleed passage is located bleed actuating mechanism with part between the gas outlet is the section of giving vent to anger, an actuating mechanism with bleed actuating mechanism connects and is used for ordering about bleed actuating mechanism work works, works as an actuating mechanism orders about bleed actuating mechanism during operation is located the outer gas of bleed passage passes through the air inlet gets into in the bleed passage, and passes through the gas outlet discharges extremely outside the bleed passage.

The range hood further comprises a smoke exhaust valve, the smoke exhaust valve is located above the air exhaust executing mechanism and is arranged on the machine shell to open or close the air outlet section, and when the smoke exhaust valve closes the air outlet section, gas located outside the air exhaust channel cannot move into the air outlet section through the smoke exhaust valve; when the first driving mechanism drives the air exhaust executing mechanism to work, the gas in the air inlet section pushes the smoke exhaust valve to open the air outlet section and move to the outside of the air exhaust channel.

Further, the smoke exhaust valve comprises an annular baffle and a smoke exhaust valve sheet unit, the annular baffle is arranged on the casing, a smoke exhaust port is arranged on the annular baffle, the smoke exhaust valve sheet unit is movably arranged on the annular baffle and/or the casing to open or close the smoke exhaust port, and when the smoke exhaust valve sheet unit moves relative to the annular baffle and/or the casing to open the smoke exhaust port, gas in the air inlet section moves out of the air exhaust channel through the smoke exhaust valve; when the smoke exhaust valve sheet unit moves relative to the annular baffle and/or the machine shell to close the air outlet, the air outside the air exhaust channel cannot move into the air outlet section through the smoke exhaust valve.

Further, the smoke exhaust valve comprises a smoke exhaust valve sheet unit, the smoke exhaust valve sheet unit is movably arranged on the shell to open or close the air outlet, and when the smoke exhaust valve sheet unit moves relative to the shell to open the air outlet, the gas in the air inlet section moves out of the air exhaust channel through the smoke exhaust valve; when the smoke exhaust valve sheet unit moves relative to the shell to close the air outlet, the gas outside the air exhaust channel cannot move into the air outlet section through the smoke exhaust valve.

Furthermore, the smoke exhaust valve plate unit comprises a smoke exhaust valve plate, and the smoke exhaust valve plate is movably connected with the shell to open or close the air outlet; or the smoke exhaust valve plate unit comprises at least two smoke exhaust valve plates, each smoke exhaust valve plate is movably connected with the machine shell, all the smoke exhaust valve plates move relative to the machine shell to open or close the air outlet, and when all the smoke exhaust valve plates move relative to the machine shell to close the air outlet, at least two smoke exhaust valve plates are arranged in a stacked mode or in interference fit; or, be equipped with an at least stand on the casing, at least a stand will the gas outlet is separated into a plurality of little exhaust ports, exhaust valve piece unit includes two piece at least exhaust valve pieces, every exhaust valve piece with casing swing joint, whole exhaust valve piece relatively the casing motion is in order to open or close whole little exhaust ports, when whole exhaust valve piece is relative the casing motion is in order to close whole little exhaust ports, leaves the clearance between the adjacent exhaust valve piece.

Further, the lampblack absorber still includes second actuating mechanism and drive mechanism, second actuating mechanism locates the casing, second actuating mechanism passes through drive mechanism with the discharge fume valve piece unit connection, second actuating mechanism passes through drive mechanism orders about the discharge fume valve piece unit is relative the casing motion.

The range hood further comprises a control panel, the first driving mechanism and the second driving mechanism are respectively electrically connected with the control panel, and the control panel controls the working state of the first driving mechanism and controls the working state of the second driving mechanism; and/or, the lampblack absorber still includes control panel and radio signal receiver, first actuating mechanism is connected with the control panel electricity, control panel control first actuating mechanism's operating condition, second actuating mechanism with the radio signal receiver electricity is connected, the radio signal receiver control second actuating mechanism's operating condition.

Furthermore, the smoke exhaust valve plate unit comprises a smoke exhaust valve plate, and the smoke exhaust valve plate is movably connected with the annular baffle plate and/or the machine shell so as to open or close the smoke exhaust port; or the smoke exhaust valve plate unit comprises at least two smoke exhaust valve plates, each smoke exhaust valve plate is movably connected with the annular baffle and/or the machine shell, all the smoke exhaust valve plates move relative to the annular baffle and/or the machine shell to open or close the smoke exhaust port, and when all the smoke exhaust valve plates move relative to the annular baffle and/or the machine shell to close the smoke exhaust port, at least two smoke exhaust valve plates are arranged in a stacked mode or in interference fit; or, be equipped with an at least stand on the ring baffle, an at least stand will the exhaust port separates into a plurality of little exhaust ports, exhaust valve piece unit includes two piece at least exhaust valve pieces, every exhaust valve piece with ring baffle and/or casing swing joint, whole exhaust valve piece is relative ring baffle and/or the casing motion is in order to open or close whole little exhaust ports, and when whole exhaust valve piece is relative ring baffle and/or the casing motion is in order to close whole little exhaust ports, leaves the clearance between the adjacent exhaust valve piece.

Further, the lampblack absorber still includes second actuating mechanism and drive mechanism, second actuating mechanism locates annular baffle and/or the casing, second actuating mechanism passes through drive mechanism with discharge fume valve piece unit connection, second actuating mechanism passes through drive mechanism orders about discharge fume valve piece unit is relative annular baffle and/or the casing motion.

The range hood further comprises a control panel, the first driving mechanism and the second driving mechanism are respectively electrically connected with the control panel, and the control panel controls the working state of the first driving mechanism and controls the working state of the second driving mechanism; and/or, the lampblack absorber still includes control panel and radio signal receiver, first actuating mechanism is connected with the control panel electricity, control panel control first actuating mechanism's operating condition, second actuating mechanism with the radio signal receiver electricity is connected, the radio signal receiver control second actuating mechanism's operating condition.

Further, the smoke exhaust valve comprises a smoke exhaust valve body, a smoke exhaust valve piece unit and an annular baffle, the smoke exhaust valve body is arranged on the casing, a smoke exhaust channel is arranged on the smoke exhaust valve body, the annular baffle is arranged on the smoke exhaust valve body, a smoke exhaust port communicated with the smoke exhaust channel is arranged on the annular baffle, the smoke exhaust valve piece unit is movably arranged on the annular baffle and/or the smoke exhaust valve body to open or close the smoke exhaust port, and when the smoke exhaust valve piece unit moves relative to the annular baffle and/or the smoke exhaust valve body to open the smoke exhaust port, gas in the air inlet section moves out of the air exhaust channel through the smoke exhaust valve; when the smoke exhaust valve sheet unit moves relative to the annular baffle and/or the machine shell to close the smoke exhaust port, gas outside the air exhaust channel cannot move into the air outlet section through the smoke exhaust valve.

Furthermore, the smoke exhaust valve plate unit comprises a smoke exhaust valve plate, and the smoke exhaust valve plate is movably connected with the annular baffle plate and/or the smoke exhaust valve body so as to open or close the smoke exhaust port; or the smoke exhaust valve plate unit comprises at least two smoke exhaust valve plates, each smoke exhaust valve plate is movably connected with the annular baffle and/or the smoke exhaust valve body, all the smoke exhaust valve plates move relative to the annular baffle and/or the smoke exhaust valve body to open or close the smoke exhaust port, and when all the smoke exhaust valve plates move relative to the annular baffle and/or the smoke exhaust valve body to close the smoke exhaust port, at least two smoke exhaust valve plates are arranged in a stacked mode or in interference fit mode; or, at least one upright post is arranged on the annular baffle plate, the smoke exhaust port is divided into a plurality of small smoke exhaust ports by at least one upright post, the smoke exhaust valve sheet unit comprises at least two smoke exhaust valve sheets, each smoke exhaust valve sheet is movably connected with the annular baffle plate and/or the smoke exhaust valve body, all the smoke exhaust valve sheets are opposite to the annular baffle plate and/or the smoke exhaust valve body and move to open or close all the small smoke exhaust ports, and when all the smoke exhaust valve sheets are opposite to the annular baffle plate and/or the smoke exhaust valve body and move to close all the small smoke exhaust ports, gaps are reserved between the adjacent smoke exhaust valve sheets.

Further, the lampblack absorber still includes second actuating mechanism and drive mechanism, second actuating mechanism locates smoke exhaust valve body and/or casing, second actuating mechanism passes through drive mechanism with smoke exhaust valve piece unit connection, second actuating mechanism passes through drive mechanism orders about smoke exhaust valve piece unit is relative annular baffle and/or smoke exhaust valve body moves.

The range hood further comprises a control panel, the first driving mechanism and the second driving mechanism are respectively electrically connected with the control panel, and the control panel controls the working state of the first driving mechanism and controls the working state of the second driving mechanism; and/or, the lampblack absorber still includes control panel and radio signal receiver, first actuating mechanism is connected with the control panel electricity, control panel control first actuating mechanism's operating condition, second actuating mechanism with the radio signal receiver electricity is connected, the radio signal receiver control second actuating mechanism's operating condition.

Furthermore, the smoke exhaust valve and the shell are welded into a whole; or the smoke exhaust valve is hinged with the shell; or the smoke exhaust valve is detachably arranged in the air outlet section; or at least part of the smoke exhaust valve is detachably inserted in the air outlet section, and when at least part of the smoke exhaust valve is detachably inserted in the air outlet section, the smoke exhaust valve is in threaded connection or buckled connection with the air outlet section; or at least part of the smoke exhaust valve is detachably inserted in the air outlet section, and when at least part of the smoke exhaust valve is detachably inserted in the air outlet section, the smoke exhaust valve is fixedly connected with the shell through a fastening mechanism; or the smoke exhaust valve is abutted against the shell, and when the smoke exhaust valve is abutted against the shell, the smoke exhaust valve is fixedly connected with the shell through a fastening mechanism; or at least part of the smoke exhaust valve is sleeved on the shell, and when at least part of the smoke exhaust valve is sleeved on the shell, the smoke exhaust valve is in threaded connection or buckled connection with the shell; or at least part of the smoke exhaust valve is sleeved on the shell, and when at least part of the smoke exhaust valve is sleeved on the shell, the smoke exhaust valve is fixedly connected with the shell through a fastening mechanism.

When the first driving mechanism drives the air exhaust executing mechanism to work, the gas positioned in the air inlet section pushes the smoke exhaust valve to open the air outlet section and move out of the air exhaust channel, and when the air exhaust valve closes the air outlet section, the gas positioned out of the air exhaust channel cannot move into the air outlet section through the smoke exhaust valve. By the design, the range hood has the function of preventing the reverse backflow of the oil smoke under the condition that the forward smoke discharge is not influenced.

The existing exhaust valve installation workers need to install the exhaust valve on the wall body, and when the exhaust valve is installed on the wall body, sealing is formed between the exhaust valve and the wall body, so that the smoke leakage state is avoided.

In the invention, when the exhaust valve can be arranged on the machine shell, the exhaust valve can complete the installation procedure before the range hood leaves a factory. The exhaust valve completes the installation procedure before the range hood leaves the factory, and has the following advantages: 1. the method has the advantages that the field installation process of the exhaust valve is omitted, the field sealing detection process between the exhaust valve and the wall is omitted, and the labor cost of exhaust valve installation workers is omitted.

Oil liquid can be formed after the oil smoke is cooled and attached to a smoke exhaust valve, and a smoke exhaust valve plate attached with the oil liquid is difficult to open a smoke exhaust port, so that indoor smoke exhaust is difficult. Because the existing smoke exhaust valve and the wall body are usually connected into a whole in a welding and gluing mode, the smoke exhaust valve is difficult to take down from the wall body, and when the smoke exhaust valve is difficult to take down from the wall body, the smoke exhaust valve is difficult to clean, especially the back of the smoke exhaust valve plate and the inner wall of the smoke exhaust valve body. In the invention, the exhaust valve is arranged on the shell, so that the exhaust valve, especially the back of the exhaust valve plate and the inner wall of the exhaust valve body can be conveniently cleaned.

In addition, the exhaust valve is arranged on the shell, so that the exhaust valve is convenient to disassemble and assemble. By the design, the exhaust valve is convenient to replace and is cleaned comprehensively.

Drawings

Fig. 1 is a schematic perspective view of a range hood according to an embodiment of the present invention;

fig. 2 is a schematic middle sectional structure diagram of the range hood in the first embodiment of the present invention.

Detailed Description

The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.

Example one

Referring to fig. 1 and 2, the range hood includes a casing 1, an air exhaust executing mechanism 3 and a first driving mechanism 2, an air exhaust channel 11 is provided on the casing 1, at least a part of the air exhaust executing mechanism 3 is provided on the air exhaust channel 11, the air exhaust channel 11 includes an air inlet 111 and an air outlet 112, a part of the air exhaust channel 11 located between the air inlet 111 and the air exhaust executing mechanism 3 is an air inlet section 101, a part of the air exhaust channel 11 located between the air exhaust executing mechanism 3 and the air outlet 112 is an air outlet section 102, the first driving mechanism 2 is connected with the air exhaust executing mechanism 3 and is used for driving the air exhaust executing mechanism 3 to work, when the first driving mechanism 2 drives the air exhaust executing mechanism 3 to work, air outside the air exhaust channel 11 enters the air exhaust channel 11 through the air inlet 111 and is discharged outside the air.

The difference with the prior art lies in: the exhaust device further comprises a smoke exhaust valve 4, the smoke exhaust valve 4 is located above the air exhaust executing mechanism 3, the smoke exhaust valve 4 is arranged on the machine shell 1 to open or close the air outlet section 102, and when the smoke exhaust valve 4 closes the air outlet section 102, air located outside the air exhaust channel 11 cannot move into the air outlet section 102 through the smoke exhaust valve 4; when the first driving mechanism 2 drives the air exhaust executing mechanism 3 to work, the gas in the air inlet section 101 pushes the smoke exhaust valve 4 to open the air outlet section 102 and move out of the air exhaust channel 11.

It should be noted that: in the invention, the movement path of the gas when the range hood discharges smoke in the forward direction is 'the gas inlet 111, the gas inlet section 101, the gas exhaust actuating mechanism 3, the gas outlet section 102 and the gas outlet 112', and the movement path of the gas when the range hood reversely flows back is as follows: "air outlet 112, air outlet section 102, air exhaust actuator 3, air inlet section 101, and air inlet 111".

Referring to fig. 2, the smoke exhaust valve 4 comprises a smoke exhaust valve body 41, a smoke exhaust valve sheet unit 42 and an annular baffle 43, the smoke exhaust valve body 41 is arranged on the casing 1, a smoke exhaust channel 411 is arranged on the smoke exhaust valve body 41, the annular baffle 43 is arranged on the smoke exhaust valve body 41, a smoke exhaust port 4111 communicated with the smoke exhaust channel 411 is arranged on the annular baffle 43, the smoke exhaust valve sheet unit 42 is movably arranged on the annular baffle 43 and/or the smoke exhaust valve body 41 to open or close the smoke exhaust port 4111, and when the smoke exhaust valve sheet unit 42 moves relative to the annular baffle 43 and/or the smoke exhaust valve body 41 to open the smoke exhaust port 4111, gas in the air inlet section 101 moves out of the smoke exhaust channel 11 through; when the smoke exhaust flap unit 42 moves relative to the ring damper 43 and/or the cabinet 1 to close the smoke exhaust port 4111, the gas outside the suction channel 11 cannot move into the gas outlet section 102 through the smoke exhaust valve.

In the present invention, the meaning of the "smoke exhaust valve sheet unit 42 movably provided on the ring-shaped baffle 43 and/or the smoke exhaust valve body 41 to open or close the smoke exhaust port 4111" includes: 1. the smoke exhaust valve plate unit 42 is movably arranged on the annular baffle 43, and the structure is adopted in the invention, namely the smoke exhaust valve plate 421 is movably connected with the annular baffle 43; 2. the smoke exhaust valve sheet unit 42 is movably arranged on the smoke exhaust valve body 41; 3. the smoke exhaust valve sheet unit 42 is movably provided on the ring-shaped damper 43 and the smoke exhaust valve body 41. In the present invention, other similar expressions, such as "the smoke exhausting valve plate is movably connected with the annular baffle plate and/or the smoke exhausting valve body to open or close the smoke exhausting port" refer to the meaning that "the smoke exhausting valve plate unit 42 is movably arranged on the annular baffle plate 43 and/or the smoke exhausting valve body 41 to open or close the smoke exhausting port 4111".

Preferably, the smoke damper body 41 is in the shape of a "cylinder", and the annular baffle 43 is formed by inward flanging of the smoke damper body 41. In other embodiments of the invention, the annular baffle may be welded to the wall of the smoke exhaust valve body located on the smoke exhaust; or the annular baffle is connected with the smoke exhaust valve body into a whole through a fastener.

As shown in fig. 2, the smoke exhaust flap unit 42 includes a smoke exhaust flap 421, and the smoke exhaust flap 421 is movably connected to the ring-shaped baffle 43 and/or the smoke exhaust valve body 41 to open or close the smoke exhaust port 4111.

Certainly, in the invention, the smoke exhaust valve sheet unit may further include a plurality of smoke exhaust valve sheets, and the plurality of smoke exhaust valve sheets may effectively reduce thrust required by gas to open the smoke exhaust port, for example, the smoke exhaust valve sheet unit includes at least two smoke exhaust valve sheets, each smoke exhaust valve sheet is movably connected with the annular baffle and/or the smoke exhaust valve body, all the smoke exhaust valve sheets move relative to the annular baffle and/or the smoke exhaust valve body to open or close the smoke exhaust port, when all the smoke exhaust valve sheets move relative to the annular baffle and/or the smoke exhaust valve body to close the smoke exhaust port, at least two smoke exhaust valve sheets are arranged in a stacked manner or in an interference fit manner, and the structure of the stacked manner or in the interference fit manner of the at least two smoke exhaust valve sheets may omit. Or at least one upright post is arranged on the annular baffle plate, the exhaust port is divided into a plurality of small exhaust ports by the at least one upright post, the exhaust valve sheet unit comprises at least two exhaust valve sheets, each exhaust valve sheet is movably connected with the annular baffle plate and/or the exhaust valve body, all the exhaust valve sheets move relative to the annular baffle plate and/or the exhaust valve body to open or close all the small exhaust ports, when all the exhaust valve sheets move relative to the annular baffle plate and/or the exhaust valve body to close all the small exhaust ports, a gap is reserved between every two adjacent exhaust valve sheets, and the requirement of the exhaust valve on the manufacturing precision of the exhaust valve sheets can be reduced by the structure that the gap is reserved between every two adjacent exhaust valve.

In the present invention, the meaning of the connection between the smoke evacuation valve plate 421 and the annular baffle 43 and/or the smoke evacuation valve body 41 includes: 1. the smoke exhaust valve plate 421 is hinged to the annular baffle 43 and/or the smoke exhaust valve body 41, and as can be seen from fig. 2, in this embodiment, a rotating shaft 422 is arranged on the smoke exhaust valve plate 421, and a shaft hole matched with the rotating shaft 422 is arranged on the annular baffle 43; 2. the smoke exhaust valve plate 421 is rotatably connected to one end of the connecting rod, and the other end of the connecting rod is rotatably connected to the annular baffle 43.

Referring to fig. 2, the range hood further includes a second driving mechanism 5 and a transmission mechanism 6, the second driving mechanism 5 is disposed on the smoke exhaust valve body 41 and/or the casing 1, the second driving mechanism 5 is connected with the smoke exhaust valve sheet unit 42 through the transmission mechanism 6, the second driving mechanism 5 drives the smoke exhaust valve sheet unit 42 to move relative to the annular baffle 43 and/or the smoke exhaust valve body 41 through the transmission mechanism 6, specifically: second actuating mechanism 5 is the motor, be equipped with transmission shaft 51 on the motor, drive mechanism 6 includes driving gear 61 and driven gear 62, driving gear 61 cup joints in transmission shaft 51, driven gear 62 cup joints in pivot 422, driving gear 61 and driven gear 62 mesh, when the motor during operation, the motor passes through transmission shaft 51 and drives driving gear 61 rotatory, driving gear 62 drives driven gear 62 rotatory, driven gear 62 is rotatory through driving pivot 422, pivot 422 drives the relative annular baffle 43 of valve block 421 of discharging fume and/or the valve body 41 motion of discharging fume, in order to realize that valve block 421 of discharging fume opens or close exhaust port 4111. In other embodiments of the present invention, the second driving mechanism may be a rotary cylinder, and the second driving mechanism may also be a rotary cylinder, and when the second driving mechanism is a rotary cylinder or a rotary cylinder, the transmission mechanism may include a belt, one end of the belt is wound around an output shaft of the rotary cylinder or an output shaft of the rotary cylinder, and the other end of the belt is wound around a rotating shaft; or, the second driving mechanism may be a rotary cylinder, the second driving mechanism may also be a rotary oil cylinder, when the second driving mechanism is the rotary cylinder or the rotary oil cylinder, the transmission mechanism includes at least two gears, when the at least two gears include a driving gear and a driven gear, the driving gear is sleeved on the output shaft of the rotary cylinder or the output shaft of the rotary oil cylinder, the driven gear is sleeved on the rotating shaft, the driving gear is engaged with the driven gear, when the at least two gears include a driving gear, an intermediate gear and a driven gear, the driving gear is sleeved on the output shaft of the rotary cylinder or the output shaft of the rotary oil cylinder, the driving gear is engaged with the intermediate gear, the intermediate gear is engaged with the driven gear, and the driven gear is; or the second driving mechanism can be a linear reciprocating cylinder, the second driving mechanism can also be a linear reciprocating oil cylinder, the transmission mechanism comprises a rack and at least one gear, the at least one gear comprises a driven gear, the rack is arranged on an output shaft of the linear reciprocating cylinder or an output shaft of the linear reciprocating oil cylinder, and the rack is meshed with the driven gear; or the second driving mechanism can be a linear reciprocating cylinder, the second driving mechanism can also be a linear reciprocating oil cylinder, the transmission mechanism comprises a rack and at least one gear, the at least one gear comprises a middle gear and a driven gear, the rack is arranged on an output shaft of the linear reciprocating cylinder or an output shaft of the linear reciprocating oil cylinder, the rack is meshed with the middle gear, and the middle gear is meshed with the driven gear.

Similarly, the first driving mechanism 2 may be a motor, a rotary cylinder, or the like, and the air exhaust actuator 3 includes an impeller.

In the invention, the range hood also comprises a control panel, the first driving mechanism 2 and the second driving mechanism 5 are respectively electrically connected with the control panel, the control panel controls the working state of the first driving mechanism 2 and controls the working state of the second driving mechanism 5, the working state of the first driving mechanism 2 comprises that the first driving mechanism 2 drives the impeller to rotate and the first driving mechanism 2 stops driving the impeller to rotate, the working state of the second driving mechanism 5 comprises that the second driving mechanism 5 drives the smoke exhaust valve plate 421 to open the smoke exhaust port 4111 through the transmission mechanism 6 and the second driving mechanism 5 drives the smoke exhaust valve plate 421 to close the smoke exhaust port 4111 through the transmission mechanism 6, when the second driving mechanism 5 and the first driving mechanism 2 are simultaneously and electrically connected with the control panel, the control panel can adjust the working time of the second driving mechanism 5 according to the rotating speed of the impeller driven by the first driving mechanism 2, so as to adjust the angle of the smoke exhaust valve plate 421 to open the smoke exhaust port 4111. By the design, the smoke exhaust efficiency of different floors tends to be consistent.

The existing house comprises a flue, wherein a plurality of openings are formed in the flue at different heights, each range hood is communicated with one opening through one oil smoke pipe, the flue opening at a low floor has a good smoke exhaust effect, smoke exhaust efficiency needs to be reduced, the smoke exhaust effect at the flue opening at a high floor is poor, and the smoke exhaust efficiency needs to be improved so as to realize balanced smoke exhaust of the flue. In the invention, the smoke exhaust ventilator realizes the balanced smoke exhaust of the flue by electrically connecting the first driving mechanism 2 and the second driving mechanism 5 with the control panel respectively.

In other embodiments of the invention, the range hood further comprises a control panel and a wireless signal receiver, the first driving mechanism is electrically connected with the control panel, the control panel controls the working state of the first driving mechanism, the second driving mechanism is electrically connected with the wireless signal receiver, the wireless signal receiver controls the working state of the second driving mechanism, and the wireless signal receiver replaces the function of the control panel to realize remote wireless control of the second driving mechanism; or the range hood further comprises a control panel and a wireless signal receiver, the first driving mechanism and the second driving mechanism are respectively electrically connected with the control panel, the first driving mechanism is electrically connected with the control panel, the second driving mechanism is also electrically connected with the wireless signal receiver, and the structure realizes that the second driving mechanism is simultaneously controlled by the control panel and the wireless signal receiver.

In the invention, the connection mode of the smoke exhaust valve 4 and the casing 1 has various modes, such as: the smoke exhaust valve 4 is welded with the casing 1 into a whole; or the smoke exhaust valve 4 is hinged with the machine shell 1; or the smoke exhaust valve 4 is detachably arranged in the air outlet section 102; or at least part of the smoke exhaust valve 4 is detachably inserted in the air outlet section 102, and when at least part of the smoke exhaust valve 4 is detachably inserted in the air outlet section 102, the smoke exhaust valve 4 is in threaded connection or buckled connection with the air outlet section 102; or, at least part of the smoke exhaust valve 4 is detachably inserted in the air outlet section 102, and when at least part of the smoke exhaust valve 4 is detachably inserted in the air outlet section 102, the smoke exhaust valve 4 is fixedly connected with the machine shell 1 through a fastening mechanism; or the smoke exhaust valve 4 is abutted against the machine shell 1, and when the smoke exhaust valve 4 is abutted against the machine shell 1, the smoke exhaust valve 4 is fixedly connected with the machine shell 1 through a fastening mechanism; or at least part of the smoke exhaust valve 4 is sleeved on the casing 1, and when at least part of the smoke exhaust valve 4 is sleeved on the casing 1, the smoke exhaust valve 4 is in threaded connection or buckled connection with the casing 1; or at least part of the smoke exhaust valve 4 is sleeved on the machine shell 1, and when at least part of the smoke exhaust valve 4 is sleeved on the machine shell 1, the smoke exhaust valve 4 is fixedly connected with the machine shell 1 through a fastening mechanism. Except that the smoke exhaust valve 4 is welded with the machine shell 1 into a whole, other connection modes of the smoke exhaust valve 4 and the machine shell 1 are all convenient for dismounting, cleaning and replacing the smoke exhaust valve 4, and the smoke exhaust valve 4 is cleaned to prevent oil liquid from flowing back into the oil fume exhauster. In addition, the three parts of the 'at least part of smoke exhaust valve 4 is detachably inserted in the air outlet section 102', the 'smoke exhaust valve 4 is abutted against the machine shell 1' and the 'at least part of smoke exhaust valve 4 is sleeved on the machine shell 1' are used for limiting the installation position of the smoke exhaust valve 4 on the machine shell 1 so as to avoid the situation of smoke leakage at the joint of the smoke exhaust valve 4 and the machine shell 1 after the smoke exhaust valve 4 is connected with the machine shell 1.

Example two

In this embodiment, the lampblack absorber includes the casing, actuating mechanism and a drive mechanism bleed, be equipped with the bleed passage on the casing, at least part actuating mechanism bleeds locates the bleed passage, the bleed passage includes air inlet and gas outlet, the part that the bleed passage is located between air inlet and the actuating mechanism that bleeds is the air inlet section, the part that the bleed passage is located between actuating mechanism and the gas outlet is the section of giving vent to anger, a drive mechanism is connected with the actuating mechanism that bleeds and is used for ordering about the actuating mechanism work of bleeding, when a drive mechanism orders about the actuating mechanism work of bleeding, the gas that is located outside the bleed passage gets into in the bleed passage through the air inlet, and discharge outside the bleed passage through the gas.

The difference with the prior art lies in: the exhaust valve is arranged above the air exhaust actuating mechanism and is arranged on the machine shell to open or close the air outlet section, and when the air outlet section is closed by the exhaust valve, the gas outside the air exhaust channel cannot move into the air outlet section through the exhaust valve; when the first driving mechanism drives the air exhaust executing mechanism to work, the gas in the air inlet section pushes the smoke exhaust valve to open the air outlet section and move out of the air exhaust channel.

It should be noted that: in the invention, the movement path of gas during forward smoke discharge of the range hood is 'gas inlet, gas inlet section, gas exhaust actuating mechanism, gas outlet section and gas outlet', and the movement path of gas during backward backflow of the range hood is as follows: an air outlet, an air outlet section, an air exhaust actuating mechanism, an air inlet section and an air inlet.

In the embodiment, the smoke exhaust valve comprises a smoke exhaust valve sheet unit, the smoke exhaust valve sheet unit is movably arranged on the shell to open or close the air outlet, and when the smoke exhaust valve sheet unit moves relative to the shell to open the air outlet, the gas in the air inlet section moves out of the air exhaust channel through the smoke exhaust valve; when the smoke exhaust valve sheet unit moves relative to the machine shell to close the air outlet, the air outside the air exhaust channel cannot move into the air outlet section through the smoke exhaust valve.

In this embodiment, the smoke exhaust valve unit includes a smoke exhaust valve plate, and the smoke exhaust valve plate is movably connected with the casing to open or close the air outlet; or, smoke exhaust valve block unit includes two piece at least smoke exhaust valve blocks, every smoke exhaust valve block with casing swing joint, polylith smoke exhaust valve block can effectively reduce the gas and open the required thrust in gas outlet, and the relative casing motion of whole smoke exhaust valve blocks is in order to open or close the gas outlet, and when the relative casing motion of whole smoke exhaust valve blocks is in order to close the gas outlet, two piece at least smoke exhaust valve block range upon range of settings or interference fit's structure can save an at least stand for ring baffle to avoid reducing the gas flow area of gas outlet. Or at least one upright post is arranged on the casing, the air outlet is divided into a plurality of small smoke outlets by the at least one upright post, the smoke exhaust valve sheet unit comprises at least two smoke exhaust valve sheets, each smoke exhaust valve sheet is movably connected with the casing, the plurality of smoke exhaust valve sheets can effectively reduce the thrust required by the gas to open the small smoke outlets, all the smoke exhaust valve sheets move relative to the casing to open or close all the small smoke outlets, when all the smoke exhaust valve sheets move relative to the casing to close all the small smoke outlets, gaps are reserved between adjacent smoke exhaust valve sheets, and the structure of 'reserving the gaps between the adjacent smoke exhaust valve sheets' can reduce the requirement of the smoke exhaust valve on the manufacturing precision of the smoke.

In the invention, the meaning of the movable connection of the smoke exhaust valve plate and the machine shell comprises that: 1. the smoke exhaust valve plate is hinged with the shell, wherein a rotating shaft is arranged on the smoke exhaust valve plate, and a shaft hole matched with the rotating shaft is arranged on the shell; 2. the smoke exhaust valve plate is rotatably connected with one end of the connecting rod, and the other end of the connecting rod is rotatably connected with the casing.

In this embodiment, the lampblack absorber still includes second actuating mechanism and drive mechanism, and second actuating mechanism locates the casing, and second actuating mechanism passes through drive mechanism and is connected with the valve piece unit of discharging fume, and second actuating mechanism orders about the relative casing motion of valve piece unit of discharging fume through drive mechanism, and is specific: the second actuating mechanism is the motor, is equipped with the transmission shaft on the motor, and drive mechanism includes driving gear and driven gear, and the driving gear cup joints in the transmission shaft, and driven gear cup joints in the pivot, driving gear and driven gear meshing, and when motor during operation, the motor passes through the transmission shaft and drives the driving gear rotatory, and the driving gear drives driven gear rotatory, and driven gear is rotatory through driving the pivot, and the pivot drives the relative casing motion of valve block of discharging fume to the valve block of discharging fume is opened or is closed the exhaust port in the realization. In other embodiments of the present invention, the second driving mechanism may be a rotary cylinder, and the second driving mechanism may also be a rotary cylinder, and when the second driving mechanism is a rotary cylinder or a rotary cylinder, the transmission mechanism may include a belt, one end of the belt is wound around an output shaft of the rotary cylinder or an output shaft of the rotary cylinder, and the other end of the belt is wound around a rotating shaft; or, the second driving mechanism may be a rotary cylinder, the second driving mechanism may also be a rotary oil cylinder, when the second driving mechanism is the rotary cylinder or the rotary oil cylinder, the transmission mechanism includes at least two gears, when the at least two gears include a driving gear and a driven gear, the driving gear is sleeved on the output shaft of the rotary cylinder or the output shaft of the rotary oil cylinder, the driven gear is sleeved on the rotating shaft, the driving gear is engaged with the driven gear, when the at least two gears include a driving gear, an intermediate gear and a driven gear, the driving gear is sleeved on the output shaft of the rotary cylinder or the output shaft of the rotary oil cylinder, the driving gear is engaged with the intermediate gear, the intermediate gear is engaged with the driven gear, and the driven gear is; or the second driving mechanism can be a linear reciprocating cylinder, the second driving mechanism can also be a linear reciprocating oil cylinder, the transmission mechanism comprises a rack and at least one gear, the at least one gear comprises a driven gear, the rack is arranged on an output shaft of the linear reciprocating cylinder or an output shaft of the linear reciprocating oil cylinder, and the rack is meshed with the driven gear; or the second driving mechanism can be a linear reciprocating cylinder, the second driving mechanism can also be a linear reciprocating oil cylinder, the transmission mechanism comprises a rack and at least one gear, the at least one gear comprises a middle gear and a driven gear, the rack is arranged on an output shaft of the linear reciprocating cylinder or an output shaft of the linear reciprocating oil cylinder, the rack is meshed with the middle gear, and the middle gear is meshed with the driven gear.

Similarly, the first driving mechanism can be a motor, a rotary cylinder, a rotary oil cylinder and other driving mechanisms, and the air exhaust executing mechanism comprises an impeller.

The range hood also comprises a control panel, the first driving mechanism and the second driving mechanism are respectively electrically connected with the control panel, the control panel controls the working state of the first driving mechanism and controls the working state of the second driving mechanism, the working state of the first driving mechanism comprises that the first driving mechanism drives the impeller to rotate and the first driving mechanism stops driving the impeller to rotate, the working state of the second driving mechanism comprises that the second driving mechanism drives the smoke exhaust valve plate to open the smoke exhaust port through the transmission mechanism and the second driving mechanism drives the smoke exhaust valve plate to close the smoke exhaust port through the transmission mechanism, when the second driving mechanism and the first driving mechanism are simultaneously electrically connected with the control panel, the control panel can adjust the working time of the second driving mechanism according to the rotating speed of the impeller driven by the first driving mechanism so as to adjust the angle of the smoke exhaust valve plate for opening the smoke exhaust port. By the design, the smoke exhaust efficiency of different floors tends to be consistent.

The existing house comprises a flue, wherein a plurality of openings are formed in the flue at different heights, each range hood is communicated with one opening through one oil smoke pipe, the flue opening at a low floor has a good smoke exhaust effect, smoke exhaust efficiency needs to be reduced, the smoke exhaust effect at the flue opening at a high floor is poor, and the smoke exhaust efficiency needs to be improved so as to realize balanced smoke exhaust of the flue. In the invention, the smoke exhauster realizes balanced smoke exhaust of the flue by respectively electrically connecting the first driving mechanism and the second driving mechanism with the control panel.

In other embodiments of the invention, the range hood further comprises a control panel and a wireless signal receiver, the first driving mechanism is electrically connected with the control panel, the control panel controls the working state of the first driving mechanism, the second driving mechanism is electrically connected with the wireless signal receiver, the wireless signal receiver controls the working state of the second driving mechanism, and the wireless signal receiver replaces the function of the control panel to realize remote wireless control of the second driving mechanism; or the range hood further comprises a control panel and a wireless signal receiver, the first driving mechanism and the second driving mechanism are respectively electrically connected with the control panel, the first driving mechanism is electrically connected with the control panel, the second driving mechanism is also electrically connected with the wireless signal receiver, and the structure realizes that the second driving mechanism is simultaneously controlled by the control panel and the wireless signal receiver.

In the invention, the connection mode of the smoke exhaust valve and the shell has various modes, such as: the smoke exhaust valve and the shell are welded into a whole; or the smoke exhaust valve is hinged with the shell; or the smoke exhaust valve is detachably arranged in the air outlet section; or at least part of the smoke exhaust valve is detachably inserted in the air outlet section, and when at least part of the smoke exhaust valve is detachably inserted in the air outlet section, the smoke exhaust valve is in threaded connection or buckled connection with the air outlet section; or at least part of the smoke exhaust valve is detachably inserted in the air outlet section, and when at least part of the smoke exhaust valve is detachably inserted in the air outlet section, the smoke exhaust valve is fixedly connected with the machine shell through a fastening mechanism; or the smoke exhaust valve is abutted against the shell, and when the smoke exhaust valve is abutted against the shell, the smoke exhaust valve is fixedly connected with the shell through the fastening mechanism; or at least part of the smoke exhaust valve is sleeved on the shell, and when at least part of the smoke exhaust valve is sleeved on the shell, the smoke exhaust valve is in threaded connection or buckled connection with the shell; or at least part of the smoke exhaust valve is sleeved on the shell, and when at least part of the smoke exhaust valve is sleeved on the shell, the smoke exhaust valve is fixedly connected with the shell through the fastening mechanism. The smoke exhaust valve is not welded with the shell into a whole, other connection modes of the smoke exhaust valve and the shell are all convenient to disassemble, assemble, clean and replace the smoke exhaust valve, and the smoke exhaust valve is cleaned to prevent oil liquid from flowing back into the range hood. In addition, the three parts of the 'at least part of smoke exhaust valve is detachably inserted in the air outlet section', 'the smoke exhaust valve is abutted against the shell' and 'the at least part of smoke exhaust valve is sleeved on the shell' are used for limiting the installation position of the smoke exhaust valve on the shell so as to avoid the situation that smoke leaks at the joint of the smoke exhaust valve and the shell after the smoke exhaust valve and the shell are connected.

EXAMPLE III

In this embodiment, the lampblack absorber includes the casing, actuating mechanism and a drive mechanism bleed, be equipped with the bleed passage on the casing, at least part actuating mechanism bleeds locates the bleed passage, the bleed passage includes air inlet and gas outlet, the part that the bleed passage is located between air inlet and the actuating mechanism that bleeds is the air inlet section, the part that the bleed passage is located between actuating mechanism and the gas outlet is the section of giving vent to anger, a drive mechanism is connected with the actuating mechanism that bleeds and is used for ordering about the actuating mechanism work of bleeding, when a drive mechanism orders about the actuating mechanism work of bleeding, the gas that is located outside the bleed passage gets into in the bleed passage through the air inlet, and discharge outside the bleed passage through the gas.

The difference with the prior art lies in: the exhaust valve is arranged above the air exhaust actuating mechanism and is arranged on the machine shell to open or close the air outlet section, and when the air outlet section is closed by the exhaust valve, the gas outside the air exhaust channel cannot move into the air outlet section through the exhaust valve; when the first driving mechanism drives the air exhaust executing mechanism to work, the gas in the air inlet section pushes the smoke exhaust valve to open the air outlet section and move out of the air exhaust channel.

It should be noted that: in the invention, the movement path of gas during forward smoke discharge of the range hood is 'gas inlet, gas inlet section, gas exhaust actuating mechanism, gas outlet section and gas outlet', and the movement path of gas during backward backflow of the range hood is as follows: an air outlet, an air outlet section, an air exhaust actuating mechanism, an air inlet section and an air inlet.

In the embodiment, the smoke exhaust valve comprises an annular baffle and a smoke exhaust valve sheet unit, the annular baffle is arranged on the casing, a smoke exhaust port is arranged on the annular baffle, the smoke exhaust valve sheet unit is movably arranged on the annular baffle and/or the casing to open or close the smoke exhaust port, and when the smoke exhaust valve sheet unit moves relative to the annular baffle and/or the casing to open the smoke exhaust port, gas in the air inlet section moves out of the air exhaust channel through the smoke exhaust valve; when the smoke exhaust valve sheet unit moves relative to the annular baffle and/or the machine shell to close the air outlet, the air outside the air exhaust channel cannot move into the air outlet section through the smoke exhaust valve.

In this embodiment, the smoke exhaust valve unit includes a smoke exhaust valve plate, and the smoke exhaust valve plate is movably connected with the annular baffle and/or the casing to open or close the smoke exhaust port; or, the smoke exhaust valve sheet unit includes two piece at least smoke exhaust valve sheets, every smoke exhaust valve sheet and annular baffle and/or casing swing joint, the required thrust of smoke vent can effectively be opened to the polylith smoke exhaust valve sheet to gas, whole smoke exhaust valve sheets move in order to open or close the smoke vent relative to annular baffle and/or casing, when whole smoke exhaust valve sheets move in order to close the smoke vent relative to annular baffle and/or casing, two piece at least smoke exhaust valve sheet range upon range of setting or interference fit, the structure of two piece at least smoke exhaust valve sheet range upon range of setting or interference fit' can save an at least stand for annular baffle, in order to avoid reducing the gas flow area of smoke vent. Or at least one upright post is arranged on the annular baffle plate, the exhaust port is divided into a plurality of small exhaust ports by the at least one upright post, the exhaust valve sheet unit comprises at least two exhaust valve sheets, each exhaust valve sheet is movably connected with the annular baffle plate and/or the machine shell, the plurality of exhaust valve sheets can effectively reduce the thrust required by gas for opening the exhaust port, all the exhaust valve sheets move relative to the annular baffle plate and/or the machine shell to open or close all the small exhaust ports, when all the exhaust valve sheets move relative to the annular baffle plate and/or the machine shell to close all the small exhaust ports, gaps are reserved between adjacent exhaust valve sheets, and the structure that gaps are reserved between adjacent exhaust valve sheets can reduce the requirement of the exhaust valve on the manufacturing precision of the exhaust valve sheets.

In the invention, the meaning of the movable connection of the smoke exhaust valve plate and the annular baffle plate and/or the machine shell comprises that: 1. the smoke exhaust valve plate is hinged with the annular baffle and/or the casing, wherein a rotating shaft is arranged on the smoke exhaust valve plate, and a shaft hole matched with the rotating shaft is arranged on the annular baffle and/or the casing; 2. the smoke exhaust valve plate is rotatably connected with one end of the connecting rod, and the other end of the connecting rod is rotatably connected with the casing.

In this embodiment, the lampblack absorber still includes second actuating mechanism and drive mechanism, and second actuating mechanism locates the casing, and second actuating mechanism passes through drive mechanism and is connected with the valve piece unit of discharging fume, and second actuating mechanism orders about the relative casing motion of valve piece unit of discharging fume through drive mechanism, and is specific: the second actuating mechanism is the motor, is equipped with the transmission shaft on the motor, and drive mechanism includes driving gear and driven gear, and the driving gear cup joints in the transmission shaft, and driven gear cup joints in the pivot, driving gear and driven gear meshing, and when motor during operation, the motor passes through the transmission shaft and drives the driving gear rotatory, and the driving gear drives driven gear rotatory, and driven gear is rotatory through driving the pivot, and the pivot drives the relative casing motion of valve block of discharging fume to the valve block of discharging fume is opened or is closed the exhaust port in the realization. In other embodiments of the present invention, the second driving mechanism may be a rotary cylinder, and the second driving mechanism may also be a rotary cylinder, and when the second driving mechanism is a rotary cylinder or a rotary cylinder, the transmission mechanism may include a belt, one end of the belt is wound around an output shaft of the rotary cylinder or an output shaft of the rotary cylinder, and the other end of the belt is wound around a rotating shaft; or, the second driving mechanism may be a rotary cylinder, the second driving mechanism may also be a rotary oil cylinder, when the second driving mechanism is the rotary cylinder or the rotary oil cylinder, the transmission mechanism includes at least two gears, when the at least two gears include a driving gear and a driven gear, the driving gear is sleeved on the output shaft of the rotary cylinder or the output shaft of the rotary oil cylinder, the driven gear is sleeved on the rotating shaft, the driving gear is engaged with the driven gear, when the at least two gears include a driving gear, an intermediate gear and a driven gear, the driving gear is sleeved on the output shaft of the rotary cylinder or the output shaft of the rotary oil cylinder, the driving gear is engaged with the intermediate gear, the intermediate gear is engaged with the driven gear, and the driven gear is; or the second driving mechanism can be a linear reciprocating cylinder, the second driving mechanism can also be a linear reciprocating oil cylinder, the transmission mechanism comprises a rack and at least one gear, the at least one gear comprises a driven gear, the rack is arranged on an output shaft of the linear reciprocating cylinder or an output shaft of the linear reciprocating oil cylinder, and the rack is meshed with the driven gear; or the second driving mechanism can be a linear reciprocating cylinder, the second driving mechanism can also be a linear reciprocating oil cylinder, the transmission mechanism comprises a rack and at least one gear, the at least one gear comprises a middle gear and a driven gear, the rack is arranged on an output shaft of the linear reciprocating cylinder or an output shaft of the linear reciprocating oil cylinder, the rack is meshed with the middle gear, and the middle gear is meshed with the driven gear.

Similarly, the first driving mechanism can be a motor, a rotary cylinder, a rotary oil cylinder and other driving mechanisms, and the air exhaust executing mechanism comprises an impeller.

The range hood also comprises a control panel, the first driving mechanism and the second driving mechanism are respectively electrically connected with the control panel, the control panel controls the working state of the first driving mechanism and controls the working state of the second driving mechanism, the working state of the first driving mechanism comprises that the first driving mechanism drives the impeller to rotate and the first driving mechanism stops driving the impeller to rotate, the working state of the second driving mechanism comprises that the second driving mechanism drives the smoke exhaust valve plate to open the smoke exhaust port through the transmission mechanism and the second driving mechanism drives the smoke exhaust valve plate to close the smoke exhaust port through the transmission mechanism, when the second driving mechanism and the first driving mechanism are simultaneously electrically connected with the control panel, the control panel can adjust the working time of the second driving mechanism according to the rotating speed of the impeller driven by the first driving mechanism so as to adjust the angle of the smoke exhaust valve plate for opening the smoke exhaust port. By the design, the smoke exhaust efficiency of different floors tends to be consistent.

The existing house comprises a flue, wherein a plurality of openings are formed in the flue at different heights, each range hood is communicated with one opening through one oil smoke pipe, the flue opening at a low floor has a good smoke exhaust effect, smoke exhaust efficiency needs to be reduced, the smoke exhaust effect at the flue opening at a high floor is poor, and the smoke exhaust efficiency needs to be improved so as to realize balanced smoke exhaust of the flue. In the invention, the smoke exhauster realizes balanced smoke exhaust of the flue by respectively electrically connecting the first driving mechanism and the second driving mechanism with the control panel.

In other embodiments of the invention, the range hood further comprises a control panel and a wireless signal receiver, the first driving mechanism is electrically connected with the control panel, the control panel controls the working state of the first driving mechanism, the second driving mechanism is electrically connected with the wireless signal receiver, the wireless signal receiver controls the working state of the second driving mechanism, and the wireless signal receiver replaces the function of the control panel to realize remote wireless control of the second driving mechanism; or the range hood further comprises a control panel and a wireless signal receiver, the first driving mechanism and the second driving mechanism are respectively electrically connected with the control panel, the first driving mechanism is electrically connected with the control panel, the second driving mechanism is also electrically connected with the wireless signal receiver, and the structure realizes that the second driving mechanism is simultaneously controlled by the control panel and the wireless signal receiver.

In the invention, the connection mode of the smoke exhaust valve and the shell has various modes, such as: the smoke exhaust valve and the shell are welded into a whole; or the smoke exhaust valve is hinged with the shell; or the smoke exhaust valve is detachably arranged in the air outlet section; or at least part of the smoke exhaust valve is detachably inserted in the air outlet section, and when at least part of the smoke exhaust valve is detachably inserted in the air outlet section, the smoke exhaust valve is in threaded connection or buckled connection with the air outlet section; or at least part of the smoke exhaust valve is detachably inserted in the air outlet section, and when at least part of the smoke exhaust valve is detachably inserted in the air outlet section, the smoke exhaust valve is fixedly connected with the machine shell through a fastening mechanism; or the smoke exhaust valve is abutted against the shell, and when the smoke exhaust valve is abutted against the shell, the smoke exhaust valve is fixedly connected with the shell through the fastening mechanism; or at least part of the smoke exhaust valve is sleeved on the shell, and when at least part of the smoke exhaust valve is sleeved on the shell, the smoke exhaust valve is in threaded connection or buckled connection with the shell; or at least part of the smoke exhaust valve is sleeved on the shell, and when at least part of the smoke exhaust valve is sleeved on the shell, the smoke exhaust valve is fixedly connected with the shell through the fastening mechanism. The smoke exhaust valve is not welded with the shell into a whole, other connection modes of the smoke exhaust valve and the shell are all convenient to disassemble, assemble, clean and replace the smoke exhaust valve, and the smoke exhaust valve is cleaned to prevent oil liquid from flowing back into the range hood. In addition, the three parts of the 'at least part of smoke exhaust valve is detachably inserted in the air outlet section', 'the smoke exhaust valve is abutted against the shell' and 'the at least part of smoke exhaust valve is sleeved on the shell' are used for limiting the installation position of the smoke exhaust valve on the shell so as to avoid the situation that smoke leaks at the joint of the smoke exhaust valve and the shell after the smoke exhaust valve and the shell are connected.

While the present invention has been described with reference to the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims (14)

1. The range hood comprises a casing, an air exhaust executing mechanism and a first driving mechanism, wherein an air exhaust channel is arranged on the casing, at least part of the air exhaust executing mechanism is arranged on the air exhaust channel, the air exhaust channel comprises an air inlet and an air outlet, the part of the air exhaust channel between the air inlet and the air exhaust executing mechanism is an air inlet section, the part of the air exhaust channel between the air exhaust executing mechanism and the air outlet is an air outlet section, the first driving mechanism is connected with the air exhaust executing mechanism and used for driving the air exhaust executing mechanism to work, when the first driving mechanism drives the air exhaust executing mechanism to work, the gas outside the air exhaust channel enters the air exhaust channel through the air inlet and is discharged outside the air exhaust channel through the air outlet, and the range hood is characterized by further comprising a smoke exhaust valve, the smoke exhaust valve is positioned above the air exhaust executing mechanism and arranged on the shell to open or close the air outlet section, and when the smoke exhaust valve closes the air outlet section, gas outside the air exhaust channel cannot move into the air outlet section through the smoke exhaust valve; when the first driving mechanism drives the air exhaust executing mechanism to work, the gas in the air inlet section pushes the smoke exhaust valve to open the air outlet section and move to the outside of the air exhaust channel.

2. The range hood according to claim 1, wherein the smoke exhaust valve comprises an annular baffle and a smoke exhaust valve sheet unit, the annular baffle is arranged on the casing, a smoke exhaust port is arranged on the annular baffle, the smoke exhaust valve sheet unit is movably arranged on the annular baffle and/or the casing to open or close the smoke exhaust port, and when the smoke exhaust valve sheet unit moves relative to the annular baffle and/or the casing to open the smoke exhaust port, gas in the air inlet section moves out of the air exhaust channel through the smoke exhaust valve; when the smoke exhaust valve sheet unit moves relative to the annular baffle and/or the machine shell to close the air outlet, the air outside the air exhaust channel cannot move into the air outlet section through the smoke exhaust valve.

3. The range hood according to claim 1, wherein the smoke exhaust valve comprises a smoke exhaust valve sheet unit, the smoke exhaust valve sheet unit is movably arranged on the machine shell to open or close the air outlet, and when the smoke exhaust valve sheet unit moves relative to the machine shell to open the air outlet, air in the air inlet section moves out of the air exhaust channel through the smoke exhaust valve; when the smoke exhaust valve sheet unit moves relative to the shell to close the air outlet, the gas outside the air exhaust channel cannot move into the air outlet section through the smoke exhaust valve.

4. The range hood of claim 3, wherein the smoke exhaust valve unit comprises a smoke exhaust valve plate movably connected with the housing to open or close the air outlet; or the smoke exhaust valve plate unit comprises at least two smoke exhaust valve plates, each smoke exhaust valve plate is movably connected with the machine shell, all the smoke exhaust valve plates move relative to the machine shell to open or close the air outlet, and when all the smoke exhaust valve plates move relative to the machine shell to close the air outlet, at least two smoke exhaust valve plates are arranged in a stacked mode or in interference fit; or, be equipped with an at least stand on the casing, at least a stand will the gas outlet is separated into a plurality of little exhaust ports, exhaust valve piece unit includes two piece at least exhaust valve pieces, every exhaust valve piece with casing swing joint, whole exhaust valve piece relatively the casing motion is in order to open or close whole little exhaust ports, when whole exhaust valve piece is relative the casing motion is in order to close whole little exhaust ports, leaves the clearance between the adjacent exhaust valve piece.

5. The range hood according to claim 4, further comprising a second driving mechanism and a transmission mechanism, wherein the second driving mechanism is arranged on the casing, the second driving mechanism is connected with the smoke exhaust valve sheet unit through the transmission mechanism, and the second driving mechanism drives the smoke exhaust valve sheet unit to move relative to the casing through the transmission mechanism.

6. The range hood according to claim 5, further comprising a control panel, wherein the first driving mechanism and the second driving mechanism are electrically connected to the control panel, respectively, and the control panel controls the operating state of the first driving mechanism and controls the operating state of the second driving mechanism; and/or, the lampblack absorber still includes control panel and radio signal receiver, first actuating mechanism is connected with the control panel electricity, control panel control first actuating mechanism's operating condition, second actuating mechanism with the radio signal receiver electricity is connected, the radio signal receiver control second actuating mechanism's operating condition.

7. The range hood according to claim 2, wherein the smoke exhaust valve sheet unit comprises a smoke exhaust valve sheet which is movably connected with the annular baffle and/or the machine shell so as to open or close the smoke exhaust port; or the smoke exhaust valve plate unit comprises at least two smoke exhaust valve plates, each smoke exhaust valve plate is movably connected with the annular baffle and/or the machine shell, all the smoke exhaust valve plates move relative to the annular baffle and/or the machine shell to open or close the smoke exhaust port, and when all the smoke exhaust valve plates move relative to the annular baffle and/or the machine shell to close the smoke exhaust port, at least two smoke exhaust valve plates are arranged in a stacked mode or in interference fit; or, be equipped with an at least stand on the ring baffle, an at least stand will the exhaust port separates into a plurality of little exhaust ports, exhaust valve piece unit includes two piece at least exhaust valve pieces, every exhaust valve piece with ring baffle and/or casing swing joint, whole exhaust valve piece is relative ring baffle and/or the casing motion is in order to open or close whole little exhaust ports, and when whole exhaust valve piece is relative ring baffle and/or the casing motion is in order to close whole little exhaust ports, leaves the clearance between the adjacent exhaust valve piece.

8. The range hood according to claim 7, further comprising a second driving mechanism and a transmission mechanism, wherein the second driving mechanism is arranged on the annular baffle and/or the casing, the second driving mechanism is connected with the smoke exhaust valve sheet unit through the transmission mechanism, and the second driving mechanism drives the smoke exhaust valve sheet unit to move relative to the annular baffle and/or the casing through the transmission mechanism.

9. The range hood according to claim 8, further comprising a control panel, wherein the first driving mechanism and the second driving mechanism are electrically connected to the control panel, respectively, and the control panel controls an operating state of the first driving mechanism and controls an operating state of the second driving mechanism; and/or, the lampblack absorber still includes control panel and radio signal receiver, first actuating mechanism is connected with the control panel electricity, control panel control first actuating mechanism's operating condition, second actuating mechanism with the radio signal receiver electricity is connected, the radio signal receiver control second actuating mechanism's operating condition.

10. The range hood according to claim 1, wherein the smoke exhaust valve comprises a smoke exhaust valve body, a smoke exhaust valve sheet unit and an annular baffle, the smoke exhaust valve body is arranged on the shell, a smoke exhaust channel is arranged on the smoke exhaust valve body, the annular baffle is arranged on the smoke exhaust valve body, a smoke exhaust port communicated with the smoke exhaust channel is arranged on the annular baffle, the smoke exhaust valve sheet unit is movably arranged on the annular baffle and/or the smoke exhaust valve body to open or close the smoke exhaust port, and when the smoke exhaust valve sheet unit moves relative to the annular baffle and/or the smoke exhaust valve body to open the smoke exhaust port, gas in the air inlet section moves out of the smoke exhaust channel through the smoke exhaust valve; when the smoke exhaust valve sheet unit moves relative to the annular baffle and/or the machine shell to close the smoke exhaust port, gas outside the air exhaust channel cannot move into the air outlet section through the smoke exhaust valve.

11. The range hood according to claim 10, wherein the smoke exhaust valve piece unit comprises a smoke exhaust valve piece which is movably connected with the annular baffle and/or the smoke exhaust valve body to open or close the smoke exhaust port; or the smoke exhaust valve plate unit comprises at least two smoke exhaust valve plates, each smoke exhaust valve plate is movably connected with the annular baffle and/or the smoke exhaust valve body, all the smoke exhaust valve plates move relative to the annular baffle and/or the smoke exhaust valve body to open or close the smoke exhaust port, and when all the smoke exhaust valve plates move relative to the annular baffle and/or the smoke exhaust valve body to close the smoke exhaust port, at least two smoke exhaust valve plates are arranged in a stacked mode or in interference fit mode; or, at least one upright post is arranged on the annular baffle plate, the smoke exhaust port is divided into a plurality of small smoke exhaust ports by at least one upright post, the smoke exhaust valve sheet unit comprises at least two smoke exhaust valve sheets, each smoke exhaust valve sheet is movably connected with the annular baffle plate and/or the smoke exhaust valve body, all the smoke exhaust valve sheets are opposite to the annular baffle plate and/or the smoke exhaust valve body and move to open or close all the small smoke exhaust ports, and when all the smoke exhaust valve sheets are opposite to the annular baffle plate and/or the smoke exhaust valve body and move to close all the small smoke exhaust ports, gaps are reserved between the adjacent smoke exhaust valve sheets.

12. A range hood as claimed in claim 10, further comprising a second driving mechanism and a transmission mechanism, wherein the second driving mechanism is disposed on the smoke exhaust valve body and/or the housing, the second driving mechanism is connected to the smoke exhaust valve sheet unit through the transmission mechanism, and the second driving mechanism drives the smoke exhaust valve sheet unit to move relative to the annular baffle and/or the smoke exhaust valve body through the transmission mechanism.

13. The range hood according to claim 12, further comprising a control panel, wherein the first driving mechanism and the second driving mechanism are electrically connected to the control panel, respectively, and the control panel controls an operating state of the first driving mechanism and controls an operating state of the second driving mechanism; and/or, the lampblack absorber still includes control panel and radio signal receiver, first actuating mechanism is connected with the control panel electricity, control panel control first actuating mechanism's operating condition, second actuating mechanism with the radio signal receiver electricity is connected, the radio signal receiver control second actuating mechanism's operating condition.

14. The range hood according to claim 1, wherein the smoke exhaust valve is welded with the shell into a whole; or the smoke exhaust valve is hinged with the shell; or the smoke exhaust valve is detachably arranged in the air outlet section; or at least part of the smoke exhaust valve is detachably inserted in the air outlet section, and when at least part of the smoke exhaust valve is detachably inserted in the air outlet section, the smoke exhaust valve is in threaded connection or buckled connection with the air outlet section; or at least part of the smoke exhaust valve is detachably inserted in the air outlet section, and when at least part of the smoke exhaust valve is detachably inserted in the air outlet section, the smoke exhaust valve is fixedly connected with the shell through a fastening mechanism; or the smoke exhaust valve is abutted against the shell, and when the smoke exhaust valve is abutted against the shell, the smoke exhaust valve is fixedly connected with the shell through a fastening mechanism; or at least part of the smoke exhaust valve is sleeved on the shell, and when at least part of the smoke exhaust valve is sleeved on the shell, the smoke exhaust valve is in threaded connection or buckled connection with the shell; or at least part of the smoke exhaust valve is sleeved on the shell, and when at least part of the smoke exhaust valve is sleeved on the shell, the smoke exhaust valve is fixedly connected with the shell through a fastening mechanism.

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