76results about How to "Improve the winding effect" patented technology

The application relates to the air conditioning technical field and discloses an indoor unit and an air conditioner. The indoor unit comprises a shell, an air duct formed in the shell, an air inlet and an air outlet, and the air duct is communicated between the air inlet and the air outlet; a heat exchanger located in the air duct; a cross-flow fan located in the air duct, the cross-flow fan comprising a motor; wherein a side wall of the air duct is provided with an exhaust passage communicated with the air duct, the shell is further provided with a heat dissipation passage, the heat dissipation passage is located outside the air duct and is communicated between the exhaust passage and the motor, and airflow in the air duct can flow to the motor through the exhaust passage and the heat dissipation passage. The airflow in the air duct has certain kinetic energy and temperature regulation, thereby providing continuous cooling effect for the motor, so that the heat dissipation efficiency of the motor is remarkably improved, and the service life of the motor is prolonged.

The utility model discloses a fabric collecting device of anti -loose function, include: fabric collecting structure, fabric collecting structure includes baseplate. The utility model is equipped with the clamping block, the clamping groove, the fixed plate and the slope, and the clamping block is positioned to the fixed plate with the clamping groove clamping, and the fixed plate is pressed fixed to prevent the fabric loose at the tail end of winding good fabric top, and the slope is tangent with the limiting disc can make the fixed plate installation positioning more labor saving, this step, fabric winding position is firm, and the anti -loose effect is good, and the transportation storage is convenient, based on above-mentioned beneficial effect, is equipped with guide roller, electric push rod, pivot, sliding block and spring no.

Wrapped insulated wires and coils that can increase or make equal insulation breakdown voltage even when the insulation coating thickness is the same, or can increase or make equal insulation breakdown voltage even when the insulation coating thickness is reduced to make the insulated wire diameter smaller. The insulated wire (10) has a conductor (1) and an insulating cover (2) provided on the outer periphery of the conductor (1). The insulating cover (2) is composed of multiple insulating layers (2a, 2b, 2c, 2d, 2e) formed by overlapping and winding 2 to 5 insulating strips (11, 12, 13, 14, 15). In this insulated wire (10), the insulating cover (2) is configured such that: (1) when there are a total of 2 or 3 insulating layers formed by overlapping and winding the insulating strips, the total number of windings of each insulating layer is less than or equal to the total number of integer parts of the number of windings of each insulating layer plus 1; or (2) when there are a total of 4 or 5 insulating layers formed by overlapping and winding the insulating strips, the total number of windings of each insulating layer is less than or equal to the total number of integer parts of the number of windings of each insulating layer plus 2. By configuring it in this way, the above-mentioned problem is solved.

The invention relates to the technical field of air conditioning, and discloses an air purification device and an air conditioner. The air purification device comprises a shell defining a containing cavity with an air inlet and an air outlet, and the air outlet is located in the top of the containing cavity; the purification device is arranged in the accommodating cavity; the fan is movably located at the air outlet, and the fan is provided with a fan air inlet and a fan air outlet; wherein the fan can move between a first position and a second position relative to the air outlet, when the fan moves to the first position, the fan air inlet is communicated with the air outlet, and the fan drives airflow of the air inlet to flow through the purification device and the fan and then flow out of the fan air outlet; when the fan moves to the second position, the fan air inlet and the fan air outlet are staggered, and the fan drives external airflow to enter the fan air inlet and then flow out of the fan air outlet. Therefore, when the air purification device operates in a fan mode, external airflow can directly flow into the fan air inlet, the air inlet resistance is reduced, and the air outlet effect of the fan is improved.

The utility model relates to the technical field of steel belt slitting processing, in particular to a steel belt slitting waste collecting device which comprises a bottom plate and an arranging device, a servo motor is fixedly connected to the upper surface of the bottom plate, a box is fixedly connected to the upper surface of the bottom plate, a recycling barrel is fixedly connected to one end of the box, and a wire inlet is formed in the surface of the recycling barrel. The driving end of the servo motor penetrates through the box and the recycling barrel and is fixedly connected with a rolling rod, the arranging device is arranged on the surface of the recycling barrel and comprises a guide rail, the guide rail is fixedly connected with the recycling barrel, a clamping groove is formed in the surface of the guide rail, a sliding sleeve is slidably connected to the surface of the guide rail, and a support is fixedly connected to the surface of the sliding sleeve. A blocking frame is fixedly connected to the surface of the support, a guiding part of the blocking frame is composed of two rotating pulleys, the pulleys of the blocking frame are symmetrically arranged up and down, and the sliding sleeve further comprises a driving mechanism used for driving the sliding sleeve to move in a reciprocating mode. And the rolling effect is optimized, follow-up carrying of the steel bars is facilitated, and deformation and scraping caused by disordered winding of the steel bars are reduced.

The utility model provides a miniature brushless ducted fan with LED (light-emitting diode) illumination, which comprises an outer shell, a lampshade is arranged on the front surface of the outer shell, a through air duct is arranged at the top of the outer shell, and an inverted turbofan is arranged in the air duct. The charging port is formed in the front face of the outer shell, the control switch and the indicator lamp are installed on the top of the outer shell, the lamp panel and the LED lamp beads are installed in the lampshade, the combination of the fan and the lighting function is achieved, the use requirements of a user in different scenes are met, and especially when the fan is used during night travel and outdoor camping, the user can enjoy cooling brought by the fan and can also enjoy the illumination function. According to the miniature brushless ducted fan, the LED lamp beads are distributed in an array mode, different light-emitting patterns can be formed by controlling the light-emitting sequence or brightness of the LED lamp beads, the functionality of the miniature brushless ducted fan is increased, and meanwhile the miniature brushless ducted fan can be made to be more practical.

The utility model relates to the technical field of battery production, in particular to a compression roller structure for automatic winding and a prime coater, the compression roller structure comprises a compression roller assembly, a driving assembly, a winding glue compression roller and a swing arm mounting plate, the compression roller assembly is arranged on a rotating tower and is symmetrically connected to two ends of the winding glue compression roller through a first compression roller swing arm and a second compression roller swing arm, and the driving assembly is arranged on the rotating tower. The pressure applying device is used for applying uniform pressure to a material in the winding process; the other end of the first compression roller swing arm and the other end of the second compression roller swing arm are connected with the driving assembly through the adjusting assembly, the driving assembly is fixed to an air cylinder fixing pin through a first air cylinder and a second air cylinder, the air cylinder fixing pin is arranged on the swing arm mounting plate, and the swing arm mounting plate can swing along an optical axis. The swing driving device is used for providing swing driving force for the pressing roller assembly and ensuring that a suspended base material is effectively pressed and contacted after passing through the winding rubber pressing roller, so that the bottom base material contacted with a winding drum is smoothed, the bottom winding effect is remarkably improved, and the bottom wrinkling phenomenon is reduced.

The utility model discloses a carbon fiber cloth weaving device, and belongs to the technical field of weaving devices. Comprising a knitting machine and a winding frame, the winding frame is arranged on one side of the knitting machine, an auxiliary frame is installed at the top end of the winding frame, integrated frames are symmetrically arranged on the outer wall of the knitting machine, bidirectional lead screws are movably installed in the integrated frames, and stepping motors are arranged at the top ends of the integrated frames; and the output end of the stepping motor is connected with the two-way lead screw, the surface of the two-way lead screw is sleeved with two sets of threaded sleeves, the threaded sleeves are in threaded connection with the two-way lead screw, and connecting plates are installed between the two sets of corresponding threaded sleeves. According to the carbon fiber cloth winding device, heat dissipation of carbon fiber cloth is achieved through convenient reciprocating swing air blowing, elastic covering, pressing and winding of the cloth are facilitated, the cooling speed of the cloth is increased, and the air blowing, heat dissipation and cooling effects of the carbon fiber cloth and the winding quality of the cloth are improved.

This utility model relates to the field of work machinery technology, and discloses an air conditioning assembly and work machinery. The air conditioning assembly includes: an evaporator having an air inlet and a first air outlet; and a first duct assembly including a face-blowing duct, a defrosting duct, and a first common duct. One end of the first common duct is connected to the first air outlet, and the other end is connected to the face-blowing duct and the defrosting duct, respectively. In this utility model, the face-blowing duct and the defrosting duct are connected to the first air outlet of the evaporator through the first common duct. Compared with the original independent duct, the first common duct has a larger flow cross-sectional area. Under the same air volume at the first air outlet, the air velocity in the first common duct is lower, thus effectively reducing the eddy current intensity in the first common duct, thereby reducing the air pressure loss during the air guiding process of the first duct assembly, increasing the air velocity at the air outlets of the face-blowing duct and the defrosting duct, so that the air conditioning assembly has a better air outlet effect under the same working power.

The present application relates to the technical field of household appliances, and provides a range hood, which comprises a machine body configured with an air inlet, a panel configured with a first connecting part and a second connecting part arranged at intervals, and an opening and closing mechanism comprising a first moving part and a second moving part, wherein the first moving part is rotationally connected to the first connecting part, the second moving part is connected to the second connecting part, and the first moving part and the second moving part switch the panel between a folded state and an unfolded state. In the unfolded state, the first moving part rotates the panel by a first angle, and the second moving part rotates the panel around the first connecting part by a second angle. When in use, switching the panel from the folded state to the unfolded state comprises two actions, the panel outside the air inlet can be unfolded at the air inlet, a larger width coverage is realized in a smaller movement space, and the air collection effect of the range hood is increased.

This invention provides a damper control mechanism, an air conditioning vent device, and an automobile, relating to the field of automotive parts technology. The damper control mechanism is used to drive a damper. The damper includes a first and second baffle plate hinged together, a track disk, and cranks. Track grooves are provided on both sides of the track disk, each groove including a bending groove. Each bending groove includes a connected, angled arcuate section and a section A. One end of each crank is used to connect to the first and second baffle plates, respectively, while the other end of each crank has a protruding convex shaft located in its corresponding track groove. The track disk rotates around its own axis so that when one of the convex shafts moves in the arcuate section on one side of the track disk, the other convex shaft moves in the section A on the other side of the track disk. This damper control mechanism does not require a torsion spring when driving the damper, avoiding the problem of torsion spring failure after prolonged use.

This invention relates to the field of filter membrane preparation technology, specifically disclosing an equipment and process for preparing polyvinylidene fluoride (PVDF) membranes via phase inversion. The equipment includes a stirring and dissolving tank, a spinning tank, a core liquid tank, a spinneret, a first gel bath, a second gel bath, a winding device, and a control system. The stirring and dissolving tank and the spinning tank are connected via a first conveying assembly. Before spinning, this invention eliminates all air bubbles in the casting solution through the combined action of a mechanical stirring defoaming mechanism and a vibration defoaming mechanism in the spinning tank. This not only improves the quality of the subsequent spinning castings but also eliminates the need for a vacuum system. When the casting spinning traction speed changes, the fork-type telescopic adjustment frame can be adjusted via a telescopic drive component, thereby regulating the traction distance of the casting in the non-solvent or non-solvent mixture during traction. This ensures that the exchange rate between solvent and non-solvent in the casting remains the same, guaranteeing consistent product quality and performance.

The utility model discloses an air duct assembly and an air conditioner indoor unit. The air duct assembly comprises a shell, a centrifugal fan and a heat exchanger. The shell is provided with two air outlets formed in the height direction in a spaced mode. The centrifugal fan is arranged at the end of the air duct assembly in the length direction and comprises an outer volute, an inner volute and centrifugal fan blades. The inner volute is rotatably arranged in the inner cavity of the outer volute so that airflow exhausted by the centrifugal fan blades can flow to one of the two air outlets to change the air outlet position. The heat exchanger is located on the axial side of the centrifugal fan, and the length direction of the heat exchanger is parallel to the axis of the centrifugal fan. The motor used for driving the centrifugal fan can be placed on the axial side portion of the centrifugal fan, the compactness of the structure is further improved, the centrifugal fan can have the larger size under the condition that the overall size of the air duct assembly is small, the static pressure resistance of the centrifugal fan is high, the air outlet effect is improved, and the service life of the air duct assembly is prolonged. And the space occupation of the air conditioner indoor unit can be reduced.

The utility model relates to an air duct one-way valve of an air curtain machine, which comprises a valve body frame, a one-way plate and a check block, the valve body frame is of a frame structure and forms a ventilation channel, the one-way plate is hinged with the valve body frame, the check block is fixed on the valve body frame, extends inwards and can prevent the one-way plate from rotating inwards, and a fan opposite to an air outlet is arranged in the air curtain machine. The two air outlets are communicated through the air duct, the one-way valves are fixed to the inner walls of the air outlets, close to the fans, of the air duct, air outlet of the two fans cannot interfere with each other, and the air outlet effect of the fans is improved.

The utility model relates to the sealing box adhesive tape winding box with antiskid line structure belongs to sealing box adhesive tape winding box technical field. This sealing box adhesive tape winding box with antiskid line structure, include: winding box main part, the inner wall rotation of winding box main part is connected with the pivot, winding mechanism can improve the winding effect of sealing box adhesive tape winding box and set up in the inner wall of winding box main part, the surface of two first antiskid pole and second antiskid pole in winding box main part all is provided with antiskid line, can prevent the phenomenon that sealing box adhesive tape appears to deviate loose, first antiskid pole can move with the winding of sealing box adhesive tape to one side through the sliding block, and the telescopic rod and compression spring are extruded, and the energy is produced after compression spring extrusion, and the energy can be dispersed in cooperation with telescopic rod, so that first antiskid pole can produce certain pressure to the location of sealing box adhesive tape's conveyance, can carry out stable conveyance to sealing box adhesive tape, and improve the use effect of winding box.

The invention discloses a winding device for film production, which comprises a workbench, a mounting plate arranged on the upper part of the workbench, a first motor fixedly mounted on one side of the mounting plate, a winding roller arranged on the upper part of the workbench, a guide roller arranged on the upper part of the workbench, and a processing assembly arranged on the upper part of the workbench, the machining assembly comprises a dust removal mechanism arranged on the upper portion of the workbench, a dismounting and mounting mechanism is arranged on one side of the workbench, a fixing mechanism is arranged on the upper portion of the workbench, a pressing mechanism is arranged in a mounting plate, a lead screw is rotationally connected with the workbench through a bearing, and a connecting block is in threaded connection to the outer wall of the lead screw. The sliding plate is in sliding connection with the workbench through a connecting block. The film winding device solves the problems that an existing device cannot treat dust and impurities in air above a film, the dust and impurities fall onto the film and are wound, the swelling phenomenon is likely to occur, and the film winding effect is poor.

This utility model discloses a novel bladeless fan, including a shell assembly, a centrifugal impeller, a motor, and a base assembly. The shell assembly includes a rear shell, a main shell, and a front shell. One end of the main shell has an air inlet and is detachably connected to the rear shell, while the other end is connected to the front shell. The front end of the front shell has an annular air outlet. A motor connected to the centrifugal impeller is housed within the inner cavity of the front and main shells. A funnel-shaped guide ring is provided inside the air inlet. The larger end of the guide ring smoothly transitions to the air inlet, while the smaller end extends into the guide ring of the centrifugal impeller and is a radially outward-curved arc end. The air inlet end of the guide ring is a radially curved arc end near the back of the smaller end of the guide ring. This utility model ensures that all air from the axial air inlet enters the centrifugal impeller, solving the problem of pressure relief at the air inlet end of the centrifugal impeller. It features an air inlet structure that conceals the interior and prevents debris from entering, providing excellent protection and possessing both design aesthetics and functionality.

The utility model discloses a kind of blow-drying devices of car washer, belong to automobile cleaning technical field, including mounting bracket, the mounting bracket top is equipped with lifting assembly, the mounting bracket one side is equipped with blowing assembly, the lifting assembly includes motor, and the output of motor is fixedly installed with transmission shaft;In the utility model, by being provided with winding sprocket in, through the design, when the water droplet on the surface of car is cleaned, winding sprocket can be rotated by motor, so as to be moved by winding chain to drive second air outlet cover, so that second air outlet cover is moved to the proper height from car top end, and second air outlet cover bottom end is equipped with two air outlet pipes, to ensure that when air blowing treatment is carried out to car top surface, good effect can be played, and second air outlet cover can be avoided by buffer pad and directly contacted with car top surface to cause damage to car.

The utility model relates to the field of lithium battery processing, and discloses an adjustable winding machine for lithium battery production, which comprises a winding machine body, the surface of the winding machine body is provided with a winding roller, the end part of the winding roller is fixedly connected with a fixed disc, the inner wall of the fixed disc is fixedly connected with a spring, and the spring is fixedly connected with a winding roller. A spring is fixedly connected to the outer wall of the winding machine body, a containing cylinder is fixedly connected to the end of the spring, a protruding block is fixedly connected to the end of the winding roller, the outer wall of the winding roller is sleeved with a blocking piece, a notch is formed in the inner surface of the blocking piece, and a mounting plate is fixedly connected to the outer wall of the winding machine body. According to the utility model, through the arrangement of the spring, the fixing disc, the placing cylinder and other structures, diaphragm paper reels of different sizes are rapidly fixed, preheating and guiding functions are provided for the diaphragm paper before the diaphragm paper is wound, the temperature is monitored in real time, the guiding tightening degree is adjusted, the subsequent attaching state of the diaphragm paper and a pole piece is improved, and the working efficiency is improved. The winding effect is improved.

A precursor wire for compound superconducting wire includes: a compound superconducting precursor member configured by compound superconducting precursor filaments, and a first matrix precursor embedding the compound superconducting precursor filaments and including a first stabilizing material; a reinforcing member arranged at the outer circumferential side of the compound superconducting precursor member, and configured by reinforcing filaments, and a second matrix embedding the reinforcing filaments and including a second stabilizing material; and a cylindrical stabilizing member arranged to at least one of the inner circumferential side or outer circumferential side of the reinforcing member, and consisting of a third stabilizing material, in which an aspect ratio Ab1 (Wb1 / Tb1) of a width dimension Wb1 relative to a thickness dimension Tb1 of the compound superconducting precursor member in a cross section perpendicular to a longitudinal direction of the compound superconducting precursor member is 1.80 or more.

The utility model discloses an air conditioner, air conditioner includes: casing, heat exchanger, fresh air duct piece, fan assembly, fan assembly is located in the fresh air duct piece, and fan assembly drives outdoor fresh air to enter the fresh air duct piece from fresh air import, and flows into the indoor through fresh air export, fan assembly includes axial flow fan and centrifugal fan, and axial flow fan is adjacent air duct import, and centrifugal fan is located axial flow fan's far side from air duct import, be equipped with the flow guide grating in the fresh air duct piece, and the flow guide grating is located between centrifugal fan and axial flow fan, and the flow guide grating guides outdoor fresh air from axial flow fan to centrifugal fan and adjusts the flow direction of outdoor fresh air. The flow guide grating of the utility model can guide the air outlet of axial flow fan, to make the airflow of passing through the flow guide grating by the direction of rotation guide flow for axial, to recover the rotational dynamic pressure of airflow, improve static pressure, be favorable to improve the air intake efficiency of centrifugal fan, and can improve the air guide volume of fan assembly, and the air guide effect is better.

The present disclosure relates to an air outlet device, an indoor unit and an air conditioner. The air outlet device comprises: an air duct structure; and a flow splitting cone comprising a left flow splitting plate, a right flow splitting plate and a front plate. The left flow splitting plate and the right flow splitting plate are arranged at an angle and enclose a top corner. The front plate has a front air outlet. The left flow splitting plate comprises a left air outlet and a left air door rotatably arranged in the left air outlet. The left air outlet is in communication with the front air outlet. The left air door is used to close or open the left air outlet and is arranged in a left air outlet duct to change the distance between the end of the left air door and the two side wall plates of the left air outlet duct. Alternatively, the right flow splitting plate comprises a right air outlet and a right air door rotatably arranged in the right air outlet. The right air outlet is in communication with the front air outlet. The right air door is used to close or open the right air outlet and is arranged in a right air outlet duct to change the distance between the end of the right air door and the two side wall plates of the right air outlet duct. The air outlet device is suitable for improving the diversity of its own air outlet to improve the air outlet effect.

The present application relates to the technical field of a warmer, in particular to a warmer. The warmer comprises: a fan assembly, a volute outlet adapted to air outlet is arranged on the fan assembly; an air outlet unit, an annular air outlet is arranged on the air outlet unit; a flow guide outer wall adapted to communicate the volute outlet and the annular air outlet; and a flow guide inner wall, the flow guide outer wall and the flow guide inner wall are arranged at intervals, a flow guide cavity is formed between the flow guide outer wall and the flow guide inner wall, and the flow guide cavity is adapted to guide the airflow to be uniformly discharged from the volute outlet to the annular air outlet. The warmer provided by the present application forms a funnel type air guide structure by arranging the flow guide outer wall and the flow guide inner wall, so that the airflow from the fan assembly is more smoothly introduced into the air outlet unit; by arranging the flow guide grid, the airflow is more uniformly flowed to the annular air outlet direction, so that 360° full range super wide angle air supply is realized, the purpose of uniform heating is achieved, and the comfort of bathing is improved.

The utility model belongs to the technical field of automobile models, and particularly relates to a transmission mechanism for producing and rolling automobile models, which comprises an operation base, grooves are respectively arranged on the surface of the operation base, a second motor is arranged at one end of the operation base, and the output end of the second motor is connected with a first bidirectional threaded rotating shaft. The surfaces of the first bidirectional threaded rotating shafts are in threaded connection with first moving blocks correspondingly. A winding drum is placed on the outer side of a sleeve, then a second motor works, so that the second motor drives a first moving block and a supporting frame to be close to each other through a first two-way threaded rotating shaft, the first moving block drives a jacking column to make contact with each other, the jacking column drives an inner rod to move in the sleeve through extrusion of the jacking column, and therefore a connecting rod moves; and the connecting rods drive the supporting blocks to move towards the outer side, so that the supporting blocks make contact with the inner wall of the winding drum, the supporting blocks are used for fixing the winding drum, the stability of the winding drum is improved, and the winding effect is improved.

The utility model belongs to cable winding technical field especially is a kind of cable winding device, including drive support and the positioning frame that is transversely movable on the drive support, the output shaft of drive support is engaged with the positioning frame between and is connected with winding disc, the inside of winding disc is equipped with inner support subassembly and outer extrusion subassembly, in the utility model, cable is wound to the reel rod on the middle part of winding disc, after cable winding is completed, two lifting driving parts start, control support block moves from reel rod inside to outside, let support block from the inside area of innermost layer cable to the outside of cable to prop up cable, adjust cross bar to the outside position of outermost layer cable, the position of cross bar is fixed by two vertical boards and two fastening screw rods, let cross bar from outside compact outermost layer cable, can effectively carry out cable's support tensioning and compact fixing operation from the inner layer and outer layer area of winding cable after cable winding.

The utility model discloses an air conditioner, include: casing, heat exchanger, fan subassembly, fixed bolster, drive motor, install in fixed bolster and be located at the center of air outlet, air -guide subassembly, rotatablely be located in air outlet and with drive motor transmission connection, bearing assembly, install in fixed bolster, air -guide subassembly is equipped with the rotation part, and the rotation part is with drive motor motor shaft transmission connection, and the rotation part is worn in bearing assembly and is connected with bearing assembly, limit connecting piece, one end of adjacent drive motor of rotation part is detachably connected, and limit connecting piece stops in the back of bearing assembly to one side of panel frame, the air conditioner of the utility model is directly through the rotation part and drive motor transmission connection, simple structure, convenient to assemble, and drive motor drives air -guide subassembly rotation from the center of air -guide subassembly, and air -guide subassembly can be spaced apart with other components, thereby can avoid the noise or vibration of friction, and air -guide subassembly rotates more stable, and the air -guide effect is better.

This utility model relates to the field of heat press machine technology, specifically disclosing a chuck-type take-up ring, including a chuck, a paper tube sleeve, a shaft clamping seat, a quick-release component, and several paper tube springs. The chuck is sleeved on the outer side of the end of the paper tube sleeve, the shaft clamping seat is installed on the end of the paper tube sleeve, the quick-release component is installed on the shaft clamping seat, and the paper tube springs are disposed on the outer side of the paper tube sleeve. Both the paper tube sleeve and the shaft clamping seat have a winding through hole in their middle portions, and the chuck has a paper tube sleeve engaging hole in its middle portion. The end of the paper tube sleeve engages with the inner side of the paper tube sleeve engaging hole. This utility model limits the heat press film by adding a chuck to prevent the heat press film from deviating during winding. By adding paper tube springs to hold the inner wall of the paper tube, it can accommodate paper tubes of different inner diameters, preventing slippage or loosening of the paper tube, resulting in good winding effect and improved winding efficiency.

The utility model relates to range hood technical field, concretely disclose a kind of adjustable fan angle's multiple air outlet range hood, including fume collecting hood, fan and support, the fume collecting hood has smoke absorption cavity, the bottom of the smoke absorption cavity is provided with air inlet, the fume collecting hood is provided with multiple air outlet communicated with smoke absorption cavity;The fan and support are all arranged in smoke absorption cavity, the fan is fixed on support, the support is rotationally connected with the inner wall of smoke absorption cavity, the fan can be rotated to its air outlet end close to multiple the air outlet.The utility model can adjust the air outlet angle of fan according to air outlet, to adapt the need of air outlet, improve air outlet performance.