70results about How to "Uniform wind" patented technology

The utility model discloses a uniform air blowing mechanism for an air laying machine, and belongs to the field of air laying equipment. The uniform air blowing mechanism comprises a uniform air duct, and the uniform air duct comprises an air inlet section which is communicated with the air outlet end of a fan; the mixing section is communicated with the air inlet section, at least two layers of mixing rollers are fixedly arranged in the mixing section, and the two adjacent layers of mixing rollers are arranged in a crossed and staggered manner; the air outlet section is communicated with the mixing section, the air outlet section is arranged in an arc-shaped reducing manner, an adjusting roller is eccentrically arranged at an air outlet of the air outlet section, and the air outlet is shielded by the adjusting roller. The uniform air duct is arranged in a segmented mode, after air of the draught fan enters the uniform air duct, uneven air can pass through the mixing roller in the mixing section, then the air force becomes uniform, meanwhile, the air pressure can be effectively improved in cooperation with the hole shrinkage arrangement of the air outlet section, and the air pressure can be further improved in cooperation with the arrangement of the eccentric roller.

The invention provides a ceiling fan and a fan lamp, and belongs to the technical field of household appliances. The ceiling fan comprises a shell, a fan assembly and a plurality of air guide pieces. The fan assembly is located in the shell, and the air guide piece surrounds the fan assembly. The air guide piece is provided with a first air guide part, in a reference plane perpendicular to the central axis of the annular opening, the connecting lines between the head end and the central axis of the annular opening and between the tail end of the first air guide part and the central axis of the annular opening are set as a first reference line and a second reference line correspondingly, and the second reference line and the first reference line are sequentially arranged in the circumferential direction in the rotating direction of the fan assembly. The deflection direction of the first flow guide part is close to the direction of airflow flowing out of the fan assembly, the airflow can be prevented from violently colliding with the first flow guide part, and therefore noise generated by the airflow can be reduced. According to the ceiling fan, the first air guide part is arc-shaped, and the concave surface of the first air guide part is opposite to the fan assembly, so that the air outlet of the ceiling fan is more uniform, and the airflow can be blown to a farther distance.

The utility model relates to a chemical fiber yarn side blowing cooling device which comprises n layers of cooling unit modules, n is a natural number larger than 0, each cooling unit module comprises a cooling part and a side air pipe, the interior of each cooling part is hollow to form a yarn passing channel, k-1 connecting air channel units are arranged on the right side of the kth layer of cooling unit module, k is larger than 0 and smaller than or equal to n, and k is a natural number; the pth connecting air duct unit of the kth layer is communicated with the (p-1) th connecting air duct unit of the (k-1) th layer, p is larger than 0 and smaller than or equal to (k-1), p is a natural number, and when p-1 is equal to 0, the pth connecting air duct unit of the kth layer is communicated with the side air pipe of the (k-1) th layer; and the nth layer of side air pipe and the connecting air duct unit are respectively and independently communicated with the cold air source device. According to the utility model, the wind force applied to the chemical fiber is uniform and proper, the difference of the wind speeds applied to different positions of the chemical fiber is reduced, and the finished product quality of the chemical fiber is improved.

The present invention relates to the field of glass physical tempering cooling, and specifically to a cooling air outlet mechanism for a glass tempering furnace. A cooling air outlet mechanism for a glass tempering furnace is provided, comprising a plurality of wind grille packages arranged up and down, the wind grille packages comprising a plurality of wind grille bars arranged in parallel, the wind grille bars being provided with air inlets, and a plurality of air outlets being provided on the side of the wind grille bars facing the roller of the tempering furnace, wherein the air outlets on each wind grille bar are arranged at intervals in the longitudinal direction, and the air outlets on two adjacent wind grille bars are arranged in a longitudinally staggered manner. By changing the arrangement of the air outlets on the wind grille bars, the longitudinal air outlets are also spaced apart like the transverse ones, and the longitudinal air outlet is intermittent and not distributed in a whole strip, thereby reducing the pressure difference of the wind force on the upper and lower surfaces of the glass plate, balancing the compressive stress on the upper and lower surfaces of the glass, making the wind pressure on the upper and lower surfaces of the glass more uniform, and greatly reducing the degree of bending of the four sides of the glass plate up and down, thereby effectively improving the problem of glass warping.

The present invention provides a partition structure and an air conditioner indoor unit having the same. The partition structure is used to be arranged in the air duct of the air conditioner indoor unit, and the partition structure includes: a partition body, which is used to be connected to the shell of the air conditioner indoor unit; at least one air duct partition plate, which is arranged on the partition body; along the first extension direction of the air duct, at least one air duct partition plate divides the air duct into at least two air duct sections, so that the airflow entering the air duct flows out after passing through at least two air duct sections respectively. The partition structure of the present invention solves the problem of scattered wind direction of the air duct of the air conditioner indoor unit in the prior art.

This utility model relates to the field of network audio acquisition technology, specifically a network audio acquisition device with a heat dissipation structure, including an acquisition body, a guide plate, and a fan. The inner side of the acquisition body has a cavity, and both sides of the acquisition body are provided with multiple heat dissipation holes for connecting the inner side of the acquisition body to the outside during use. At least one fan is present, installed at the bottom of the inner side of the acquisition body. In this utility model, the fan draws air from the outside of the acquisition body and delivers it to the inside of the air supply duct. Simultaneously, the air supply duct extends towards the electronic components inside the acquisition body, with the air outlet facing the electronic components. This allows the air supply duct to precisely guide the air to the electronic components, forming a directional airflow that ensures each electronic component receives uniform airflow. Furthermore, the airflow through the channel accelerates the discharge of hot air, improving heat dissipation efficiency.

The invention relates to the technical field of air conditioner air purification devices, and discloses a central air conditioner type plasma air disinfection and purification device which comprises a central air conditioner assembly, a filter assembly, an impurity removal assembly, a disinfection and purification assembly and an impurity collection assembly. The filter assembly is used for filtering and cleaning impurities in air, the impurity removal assembly is used for removing the impurities on the filter assembly to achieve repeated utilization of the filter assembly, the disinfection and purification assembly is used for disinfecting and purifying the air, the impurity collection assembly is used for collecting the impurities on the filter assembly, and the filter screen is in a U shape. The two ends of the filter screen are distributed up and down, so that the filter area of the outer side of the filter plate is conveniently increased, impurities in the air are fully filtered, meanwhile, the filter screen is U-shaped, and the two ends of the filter screen are distributed up and down, so that the impurities on the filter screen can be conveniently removed subsequently for repeated utilization, and the filter effect is improved.

The present invention discloses a wind curtain cabinet with a fan motor protection structure, which relates to the field of refrigeration. It includes a fan bracket, an end plate, a water baffle, an air ring, a fan blade, and a fan motor. The fan motor protection structure is composed of the fan bracket, the end plate and the water baffle. The fan bracket is fixed at the bottom of the cabinet in an inclined shape. The water baffle is located between the fan motor and the evaporator, is inclined and has a width greater than the fan blade diameter. The wind baffle is provided with wind-evening holes, which can refine the wind generated by the fan motor, make the wind generated by the fan motor more uniform, and improve the efficiency of the fan motor. The water baffle prevents the condensed water of the evaporator from dripping onto the fan motor, thereby avoiding malfunction of the fan motor.

An air guide device includes an upper guide plate, a lower guide plate and a centrifugal fan, wherein the inner cavities of the upper guide plate and the lower guide plate form an exhaust cavity, wherein the impeller of the centrifugal fan is sleeved in the exhaust cavity, wherein the lower end of the lower guide plate forms an air inlet, wherein the side walls of the upper guide plate and the lower guide plate form an air outlet, wherein the upper guide plate and the lower guide plate are connected with guide vanes, wherein the guide vanes rotate and swing to change the air outlet direction. An air purifier is also disclosed, comprising a housing, an air filter, and the air guide device described above, wherein the air filtered by the air filter is discharged from the housing through the air guide device. The air guide device of the present invention has a 360° circular air outlet and a uniform air outlet, wherein the guide plate has a reasonable structure designed according to the flow conditions of the impeller outlet, thereby ensuring that the side air outlet blows upward along a certain angle, thereby increasing the air volume circulation radiation area of ​​the air purifier.

The utility model relates to the technical field of household appliances, and discloses a bath heater which comprises a bath heater body and an air blowing assembly. The air blowing assembly is arranged in the length direction of an air outlet in the bath heater body. The blowing assembly comprises an air duct; the heating cross-flow wind wheel is arranged in the air duct and comprises a fixing ring and a plurality of blades which are arranged and fixed along the circumferential direction of the fixing ring; the blades can emit heat after being electrified; a motor shaft of the driving motor is connected with the fixing ring, and the driving motor is used for driving the heating cross-flow wind wheel to rotate; the power supply assembly comprises a conductive rotor, a conductive stator and a conductive elastic sheet; the conductive rotor and the motor shaft are coaxially arranged, and the conductive rotor is electrically connected with the conductive elastic sheet; the conductive stator is fixed on the bath heater main body and rotates relative to the conductive rotor; and the conductive elastic sheet is fixed on the fixing ring and is electrically connected with each blade, so that each blade becomes a mutually independent heating unit. According to the bath heater, the cross-flow wind wheel with the heating function is adopted, noise is reduced, meanwhile, the length of the air outlet can not be limited, the air supply range is wider, and air outlet is more uniform.

The application relates to an air outlet assembly and a bladeless fan, wherein the air outlet assembly comprises an air outlet frame support and an air outlet frame; an air outlet frame support air duct is arranged in the air outlet frame support; an air outlet air duct is arranged in the air outlet frame; the air outlet frame support is connected with the air outlet frame, so that the air outlet frame support air duct and the air outlet air duct are communicated; and an air outlet is arranged on the air outlet frame. The air outlet assembly provided by the application is connected with the air outlet frame through the air outlet frame support, and the air ducts are communicated, so that the air outlet frame can be independently supplied with air through the air outlet frame support, thereby improving the air outlet air speed and reducing the noise.

The utility model provides an air outlet structure of a central air conditioner, which relates to the technical field of central air conditioners and comprises an integral structure and positioning structures, and the positioning structures are positioned on the outer surfaces of two sides of the integral structure close to the front and rear positions of the top; the integrated structure comprises a shell, a fixing plate is fixedly connected to the position, close to the center, of the inner surface of the shell, a waterproof motor box is fixedly connected to the center of the bottom of the fixing plate, and a servo motor is fixedly installed at the center of the inner top of the waterproof motor box. When the rotating shaft rotates through the servo motor, the rotating shaft can drive the air guide plate to rotate together, so that the air guide direction can be changed through mutual cooperation of the rotating shaft and the air guide plate, air outlet is more uniform, and a user can conveniently adjust the air guide plate according to actual requirements; a user can conveniently and fixedly install the whole device on a wall body, so that the device can be normally used in the follow-up process.

The invention provides an air conditioner, a control method and device of the air conditioner and a readable storage medium. The air conditioner comprises an air conditioner body, the air conditioner body comprises a first air inlet channel, a first air outlet channel and a heat exchanger, and air is blown out from the first air outlet channel after entering the heat exchanger through the first air inlet channel for heat exchange; the heat recovery unit is arranged on the air conditioner body, the heat recovery unit comprises a first air duct and a second air duct which are adjacently arranged and separated from each other, the first air inlet channel communicates with the outside through the first air duct, and the first air outlet channel communicates with the outside through the second air duct. The problem solved by the invention is that the comfort of user experience in a dehumidification mode cannot be improved by the technical scheme in the related technology.

The utility model discloses a tea leaf withering tank, including connecting bin, electric push rod, support plate and tank body, the support plate is arranged on the lateral part of tank body outer wall, the electric push rod is fixed on the upper end of the support plate, the upper end of the electric push rod is connected with the fixed seat, and the support plate is arranged between the fixed seat. A supporting bin is arranged at the top end of the supporting plate, a motor is installed at the upper end of the inner wall of the supporting bin through a bolt, the lower end of the supporting plate is connected with a connecting rod through a bearing, and the output end of the motor is fixedly connected with the driving end of the connecting rod; a material containing bin is arranged at the upper end of the interior of the tank body, a transparent observation layer is arranged on the material containing bin, scattering blades are fixed to connecting rods, and brush strips are connected to the side portions of the lower ends of the connecting rods. The withering device is easy to uniformly discharge air, good in withering effect and convenient to adjust.

The utility model discloses a meat product draining and air-drying device which comprises a frame body, a water accumulation tank is fixedly installed at the bottom of the frame body, a grid conveying belt is installed on the inner wall of the frame body, the bottom of the water accumulation tank is communicated with a drainage pipe, an air bellow is fixedly installed on the right side of the frame body through bolts, and the top of the air bellow is communicated with an air pipe. The top of the frame body is fixedly connected with a cover box, and the inner wall of the cover box is fixedly provided with an electric telescopic rod and rotationally connected with a rotating rod. According to the device, the first rack reciprocates, the first gear drives the rotating rod to rotate in a reciprocating mode, then the rotating rod drives the second rack to reciprocate through the second gear, the second rack drives the bottom block through the vertical rod to poke meat products on the top of the grid conveying belt, and the meat products on the surface of the grid conveying belt can be poked; therefore, the meat product can be uniformly blown, and the air drying uniformity of the meat product is improved.

The application relates to the technical field of hairdressing equipment, and provides a curling device. The curling device comprises a main body part, a blowing assembly and a plurality of comb teeth; an installation cavity is formed in the inside of the main body part, and a plurality of ventilation holes communicating with the installation cavity are arranged; the blowing assembly is arranged in the installation cavity; the plurality of comb teeth are correspondingly inserted into the plurality of ventilation holes; one end of the comb tooth extends along the air guide groove in the axial direction of the comb tooth; the air guide groove is formed with an air guide gap on the side wall of the comb tooth; the end of the comb tooth provided with the air guide groove is inserted into the ventilation hole, so that the air guide groove communicates with the installation cavity, and the air guide gap is exposed to the outside of the main body part; the airflow driven by the blowing assembly can flow through the installation cavity, the air guide groove and the air guide gap in sequence and then blow out to the outside of the main body part. The comb teeth are arranged in the ventilation holes, the space utilization of the surface of the curling device is improved, and the manufacturing difficulty of the curling device is reduced; and after the blowing assembly is started, the comb teeth can blow air laterally, and the comb teeth have a better shaping effect on the hair wound on the main body part.

This invention relates to a rapid clothes drying device based on hot air circulation and its working method, belonging to the technical field of drying equipment. It includes a shell, with a vibration unit installed inside the shell, and an air circulation drying unit hung on the side wall of the shell. Clothes are hung on the vibration unit, and the air circulation drying unit draws in air from inside the shell, dries and heats it, and then blows it into the shell from the top. The air circulation drying unit consists of a heating chamber with evenly distributed air outlets on its bottom surface, located above the vibration unit. A fan is installed on the top of the heating chamber, and an air supply pipe is installed on the top of the fan. A drying unit is installed on the air inlet side of the air supply pipe, with its air inlet connected to the inside of the shell and its air outlet connected to the air supply pipe. This invention vibrates the clothes on the hanger, preventing them from sticking together and increasing the drying area. The vibration accelerates the removal of moisture from the clothes. The drying unit on the air supply pipe ensures that the air is dry during the drying process, guaranteeing efficient drying of the clothes.

The utility model relates to the technical field of automobile wire harnesses, in particular to forced air drying equipment for automobile wire harness production, which comprises a box body, a conveying assembly is mounted at the bottom in the box body, a conveying belt is arranged on the conveying assembly, and a plurality of partition plates are arranged on the conveying belt. A pair of positioning assemblies and a pair of air blowing assemblies are installed on the front side, the rear side and the middle of the top end of the box body correspondingly, each positioning assembly comprises a hydraulic cylinder installed at the top end of the box body, the output end of the lower end of each hydraulic cylinder penetrates through the top wall of the box body and is connected with a U-shaped plate with a downward opening, and a rotating cylinder is connected into each U-shaped plate through a bearing. The automobile wire harness conveying device has the advantages that each automobile wire harness is placed on the conveying belt and located between the pair of partition plates, so that the automobile wire harnesses are convenient to transport and protected against abrasion; the rotary drums of the two positioning assemblies are pressed on the automobile wire harnesses at the front end and the rear end of the box body correspondingly, so that the automobile wire harnesses cannot be scattered by wind when being dried, and the automobile wire harnesses are placed quickly and conveniently.

The utility model relates to a vertical air conditioner indoor unit and an air conditioner, and belongs to the technical field of air conditioners. The vertical air conditioner indoor unit comprises a vertical air conditioner indoor unit body and a partition plate assembly, the vertical air conditioner indoor unit body comprises a first supporting piece, a second supporting piece, a supporting column, an evaporator and two fans, the supporting column is connected with the first supporting piece and the second supporting piece, and the fans and the evaporator are arranged between the first supporting piece and the second supporting piece. The evaporator surrounds the peripheral sides of the two fans; the partition plate assembly comprises a partition plate and a first limiting piece, the partition plate is arranged between the two fans, the partition plate is connected with the first supporting piece and the second supporting piece through the first limiting piece, and the partition plate abuts against the supporting column and the evaporator. According to the vertical air conditioner indoor unit, the partition plate is arranged between the two fans, the air channels of the two fans are separated through the partition plate, mutual interference between the two air channels is avoided, air outlet of the vertical air conditioner indoor unit is more uniform, and the air outlet efficiency is improved.

The utility model discloses a novel delivery window, which relates to the technical field of delivery windows and comprises a double-layer shell consisting of a delivery window outer shell and a delivery window inner shell, the interior of the delivery window inner shell is a delivery space, and an installation space is reserved between the delivery window outer shell and the delivery window inner shell. A draught fan is fixedly installed in the portion, located above the delivery window inner shell, of the installation space, a detachable filter is arranged below the draught fan, and a flow equalizing plate is fixedly installed at the top of the delivery window inner shell. The double-layer shell composed of the delivery window outer shell and the delivery window inner shell is arranged, the fan is arranged in the installation space, airflow is sent from top to bottom, and the ultraviolet sterilization lamp is used in a matched mode, so that cross contamination is effectively prevented, and the service life of the delivery window is prolonged. The first-stage filter and the second-stage filter can fully filter backflow air, cross contamination is further avoided, air outlet is uniform due to the arrangement of a flow equalizing plate, and the use effect is good.

The utility model relates to the technical field of testing, in particular to a winter warm keeping performance testing device for cold protective clothing, a warm dummy is arranged on a rotary support, an air supply device and the warm dummy are arranged at an interval, the air supply device comprises an air supply plate, nozzles, an air pipe, a cooler, an air compressor, a pressure gauge and a pressure regulating valve, the nozzles are uniformly distributed on the air supply plate, and the air pipe is arranged on the air supply plate. An air inlet of the air supply plate is connected with an air outlet of the cooler through an air pipe, an air inlet of the cooler is connected with the air compressor, and the pressure gauge and the pressure regulating valve are arranged between the cooler and the air supply plate. According to the utility model, the defects in the prior art are overcome, the wind power uniformity is ensured by arranging the wind supply device, the wind speed facing each point of the thermal dummy is consistent, the flow speed of gas in each nozzle on the wind supply plate is the same under the action of air pressure in a loop, the condition that the wind speed of each point is inconsistent after the gas is sprayed by one nozzle is avoided, and the working efficiency of the thermal dummy is improved. The detection environment of each point of the thermal manikin is consistent, and the detection precision of the testing device is improved.

The utility model provides a high-speed air knife mechanism used for generating a stable high-speed flow field, which comprises an air knife assembly and a plurality of air knife blades, the air knife assembly comprises an air knife body, an air inlet nozzle is arranged at one end of the air knife body, a guide cavity is formed in the air knife body, and a plurality of air outlet holes communicated with the guide cavity are formed in the side wall of the air knife body; avoiding grooves longitudinally penetrating through the air knife body are formed in the top and the bottom of the air knife body; a laser beam horizontally penetrates through the rear cutting cavity, the adsorption assembly is communicated with the rear wall of the rear cutting cavity, an opening is formed in the front end face of the rear cutting cavity, and the air knife body is arranged in front of the opening. The air outlet is uniform, and the avoiding groove is arranged, so that the air inlet or the air outlet is convenient to install, and air inlet or air outlet of the air inlet is prevented from being blocked.

The utility model belongs to oven technical field, especially point to a kind of oven of application brushless DC motor, comprising: casing, inner container is equipped in casing, and cooking inner cavity is shaped in inner container;Heating assembly is set on inner container;Fan, it is fixed on casing;Fan is driven with the rotation shaft of being threaded in the inner container, rotation shaft is connected with fan blade;The fan is brushless DC motor, and the fan blade is driven by the fan and is forward or reverse rotation.This patent in fan assembly since it is brushless DC motor, it can drive the fan blade forward or reverse rotation, user can make fan assembly more uniform by the forward and reverse rotation of fan blade, or by program control to carry out air outlet according to the demand of user, to satisfy the different cooking needs of user.

The present invention discloses a variable air duct heat dissipation system for stage lights, including a light source and a fan, wherein the tail of the fan is connected to a nozzle, and the nozzle forms an outlet duct for guiding wind, and the wind flow generated by the fan is guided to the light source through the outlet duct in the nozzle; the nozzle is provided with movable blades, and the movable blades are connected to a rotating shaft, and the rotating shaft is connected to a driving mechanism, and the movable blades at least change the direction of part of the air flow in the outlet duct, so that the wind flow guided to the light source is distributed at different positions of the light source. This technical solution changes the outlet direction of the outlet duct, so that the heat at different positions of the light source can be effectively dissipated; by setting a rotating shaft and a motor to drive the movable blades to rotate continuously, it can not only change the cross-sectional size of the air outlet of the outlet duct, but also continuously dissipate heat to different positions of the light source, effectively improving the heat dissipation effect.

The embodiment of the present application provides an air-drying device for producing polyethylene wax, which relates to the technical field of polyethylene wax production. An air-drying device for producing polyethylene wax, comprising a base frame, a top frame fixedly connected to the center of the top of the base frame, and cylinder barrels fixedly connected to both sides of the top frame; rotating components and air-cooling components are respectively provided on the four sides of the base frame and the top frame facing each other, and the rotating component includes a double-headed motor fixed between the base frame and the top frame; the air-cooling component includes a refrigerator fixed to the top of the top frame, and both outlets of the refrigerator are connected to cold transport pipes. During the air-drying operation of the softened polyethylene wax particles, the dynamic polyethylene wax is evenly and efficiently air-dried by combining rotation and diversion through the cooperation of the rotating component, the air-cooling component and the auxiliary component, so as to prevent the internal polyethylene wax particles from being exposed to less wind, resulting in insufficient air drying.

The utility model provides a tea leaf withering trough. The tea withering trough comprises a device body, the right side of the device body is fixedly connected with a protective shell, a motor is installed in the protective shell, the motor is fixedly connected with a transmission rod, the transmission rod is provided with a switching mechanism, the switching mechanism is provided with a first belt pulley, and the first belt pulley is internally provided with a forward limiting groove. A forward limiting disc is fixedly connected to the transmission rod, a forward limiting block is hinged to the forward limiting disc, a forward limiting spring is fixedly connected to the back face of the forward limiting block, a reverse limiting spring is fixedly connected to the transmission rod, and a reverse limiting block is fixedly connected to the other end of the reverse limiting spring. The left side of the second belt pulley is fixedly connected with a threaded lead screw, and the surface of the threaded lead screw is in threaded connection with a push plate. The tea leaf withering trough provided by the utility model has the effects of improving the tea leaf withering uniformity and reducing the labor cost.

The invention discloses an air conditioner control method, device and system and an air conditioner, and belongs to the field of air conditioners. The method comprises the steps that when it is detected that air outlet of the air conditioner is uneven, whether the uneven air outlet reason is unstable of the rotating speed of an inner fan or filth blockage of the air conditioner or not is judged firstly, if yes, the air conditioner is controlled to execute a corresponding mode based on the uneven air outlet reason, and if not or uneven air outlet is still detected after the corresponding mode is executed, the air conditioner is controlled to execute a preset action, so that the air outlet of the air conditioner is even. Due to the fact that the reasons for uneven air outlet in the actual situation are many, only control is carried out in the prior art, the reasons are not distinguished, control needs to be carried out every time, steps are tedious, even uneven air outlet cannot be effectively eliminated, and noise still exists, aiming control is carried out on the basis of the reasons for uneven air outlet, uneven air outlet is effectively eliminated, and noise is reduced; and the user experience is greatly improved.

The present invention relates to an air guide hood for an oven, comprising an air inlet at one end and an air outlet at the other end, a guide channel being formed between the air inlet and the air outlet, the air inlet being used to communicate with the air outlet of a centrifugal fan, the width of the air guide hood increasing from the air inlet to the air outlet, the air guide hood being provided with an air guide auxiliary duct extending from the air inlet to the air outlet at the air inlet end, the air guide auxiliary duct being formed by the hood wall of the air guide hood bulging outwards, and the air guide auxiliary duct being contracted from the air inlet to the air outlet. Compared with the prior art, after the airflow in the present invention is introduced into the air guide auxiliary duct, since the air guide auxiliary duct is contracted from the air inlet to the air outlet, part of the airflow introduced into the air guide auxiliary duct is directed to the other side of the air guide hood or both sides of the air guide auxiliary duct, so that the airflow can be relatively evenly distributed in the rear half of the air guide hood, and evenly flows to the front half of the air guide hood, the air outlet of the air guide hood is even, and a better heat dissipation effect is obtained.

The utility model discloses an air heater and a flow guide assembly thereof. A flow guide assembly for an air heater comprises a shell, a flow guide wall, a cover body and a flow dividing piece. The shell comprises two ventilation openings. The flow guide wall is arranged in the shell. The cover body is at least partially limited in one of the two ventilation openings, and comprises two ventilation parts which are linearly arranged and a connecting part which is connected between the two ventilation parts. The cover body, the shell and the flow guide wall are configured to be used for forming an air channel capable of flowing between the two ventilation openings in the flow guide assembly. The flow dividing piece is arranged in the shell and is used for dividing the air channel.