39results about How to "Consistent air volume" patented technology

The invention provides a circular-drying case body of a coating machine, a drying device and a drying assembly line; the circular-drying case body of the coating machine uses an independent inner air chamber; a circular air returning inlet is separated from an air exhaust outlet; a multi-point air discharging method is used so as to process independent control; the drying device is provided with an independent circular blower and an air exhaust blower; a whole guiding and shunting device is designed reasonably according to basic knowledge of fluidics; thus, each air nozzle in the case body has uniform air blowing quantity; pressure is balanced; drying uniformity is improved; therefore, each point of a product is dried synchronously so as to increase drying efficiency.

The invention discloses a glue discharging furnace which comprises a furnace wall, a furnace door, a heart surrounded by the furnace wall and the furnace door, an air inlet, an air outlet, an air blower, a heater, an air inlet plate, an air outlet plate, a plurality of baffle plates and a plurality of air regulating plates, wherein the air inlet and the air outlet are arranged on the furnace wall; the air blower and the heater are positioned in the hearth; the air inlet plate and the air outlet plate are arranged in the hearth; the plurality of baffle plates are positioned between the air inlet plate and the air outlet plate and are used for placing to-be-discharged glue elements; the air inlet plate is provided with a plurality of air inlet holes; the air regulating plates are provided with a plurality of air regulating holes; the air regulating plates are installed on the air inlet plate and are fit with the air inlet plate so as to enable the air regulating holes and the air inlet holes to be staggered and overlapped; and the installation position of the air regulating plates on the air inlet plate can be regulated, thus the overlapped degree of staggered overlapping can be regulated. Compared with the prior art, the air speed of each layer of the glue discharging furnace provided by the invention can be regulated consistently, and the glue discharging effect is good.

The invention relates to a split type automobile air conditioner which is provided with a front shell, a rear shell and a firewall, wherein the front shell is located in a compartment, and a heat exchanger for heating a flowing airflow is arranged in the front shell; the rear shell is positioned in an engine compartment or a motor compartment; and the front shell and the rear shell are connected through a firewall opening. In the air conditioner, from upstream to downstream in an airflow direction, an air inlet, an air blower positioned on the rear shell, an evaporator, upper and lower mixingair doors positioned on the downstream side of the evaporator, a heat exchanger, and upper and lower side air outlets are successively arranged, wherein the airflow from the air blower completely passes through the evaporator. A first plate rib is arranged between the upper mixing air door and the lower mixing air door and divides the airflow from the evaporator into an upper side airflow and a lower side airflow, the upper mixing air door and the lower mixing air door enable the airflow to selectively pass through the heat exchanger, and a second plate rib is arranged on the downstream side of the heat exchanger and guides the downstream airflow of the heat exchanger to the upper side and / or lower side air outlet. A noise reduction requirement in the compartment can be met, and the spacein the engine compartment or the motor compartment can be fully utilized.

The invention discloses a solar photovoltaic photo-thermal heat collector with a porous foam metal heat-exchange structure. The solar photovoltaic photo-thermal heat collector adopts a structure of up-down double cooling channels, combines with a porous foam metal layer (6) for heat-exchange enhancement, the temperature of solar photovoltaic elements is reduced, the power generation efficiency ofthe solar photovoltaic elements is improved, at the same time, a large amount of heat generated by the solar photovoltaic elements is timely transmitted to cooling gas, and the cooling gas is discharged from a heat collector air outlet (11) to be used for preheating, drying, indoor heating and the like. According to the solar photovoltaic photo-thermal heat collector with the porous foam metal heat-exchange structure, the applied foam metal has a high thermal conductivity and a high specific surface area, the cooling efficiency of traditional solar photovoltaic photo-thermal heat collectors can be effectively improved, and the down-inflow and up-outflow modes are adopted, so that the heat-exchange process is close to the counter-current heat exchange and the heat-exchange efficiency achieves the highest.

The invention discloses a city tunnel ventilation test device and a manufacturing method thereof. The manufacturing method comprises the following steps: (1) determining the geometric scale(lambda 1 is more than 10 and less than 22) of a model tunnel and an actual model; (2) making a plurality of sections according to the geometric shape of the actual tunnel and splicing the sections into the model tunnel, wherein one wall surface of the model tunnel is made from a transparent material and the other inner wall surfaces of the model tunnel are mounted with abrasive paper; (3) mounting a jet nozzle, a back pressure pipe and a tracer gas tracking mechanism in the predetermined positions of the model tunnel. According to the manufacturing method, the ratio of the model tunnel to the actual tunnel is (1 to 22) to (1 to 10); in the ratio range, on one hand, the flowing of air in the model tunnel can satisfythe properties of a self-model region, and the model tunnel and the actual tunnel are similar in geometricproperty and flowing resistance, so that the model tunnel can accurately simulate the movement of ventilation air flow and a pollutant dispersion law in the actual tunnel; on the other hand, the test cost is relatively low, so that the test operation can beconveniently carried out.

The invention relates to a temperature control system of an energy storage box. The system comprises an air conditioner, a fan, an air duct and a battery rack, wherein an air outlet of the air conditioner is communicated with the air duct, the air duct is of a tubular structure defined by sequentially connecting air duct plates, the air duct is arranged above the fan, the fan is arranged above thebattery rack, the air duct plate is provided with an opening facing the fan, an adjustable shutter is arranged on the opening, and outlet air of the air conditioner is guided to the fan by the opening of the air duct and is blown to the battery rack by the fan. According to the mode, the purposes of improving the internal temperature of the energy storage box and reducing the temperature difference of air in the energy storage box can be achieved.

The invention discloses a city tunnel ventilation testing device with a ramp. The city tunnel ventilation testing device comprises a main tunnel and a ramp, wherein the ramp is connected with the main tunnel by a flexible connecting pipe. As the main tunnel is connected with the ramp by the flexible connecting pipe, the included angle between the ramp and the main tunnel can be adjusted optionally at any time, so as to evaluate the effects of the angle of the ramp on the ventilation and pollution discharge of the main tunnel in the same channel; by adopting the device, the manufacturing cost of a model is saved, the manufacturing period is shortened, the evaluation error is reduced furthest, and the veracity of evaluation results is guaranteed.

The invention discloses a mica-paper drying system. The mica-paper drying system comprises mica paper, a drying cylinder and a supporting frame. A pre-drying cover is arranged over the drying cylinder; the pre-drying cover is fixedly connected with the supporting frame; a first support and a second support are arranged on the left side and the right side of the supporting frame respectively; a first rolling wheel and a second rolling wheel are arranged on the first support and the second support respectively; a first transition plate and a second transition plate are connected to the lower left end and the lower right end of the pre-drying cover respectively; a pressing wheel is arranged above the first rolling wheel; a heat-dissipation fiber-taking-off device is arranged at the lower right portion of the drying cylinder; a plurality of evenly-arranged heating pipes are arranged in the pre-drying cover and fixed on an arc supporting rod; the mica paper is conveyed through the first rolling wheel, the pressing wheel, the upper surface of the pre-drying cover, the second rolling wheel, the drying cylinder and the heat-dissipation fiber-taking-off device in sequence. By means of the mica-paper drying system, the drying time can be shortened, rapid cooling is achieved, the production efficiency of the mica paper is improved, and the technical problems that the mica paper is crinkled, fractured, subjected to fiber exposure and the like in the drying process are solved.

The invention relates to a piece of countercurrent continuous-type fruit and vegetable drying equipment, comprising a drying chamber, a hot air inlet pipeline of the drying chamber which communicates with the drying chamber, a heat exchange device which communicates with the hot air inlet pipeline of the drying chamber, a main fan of which the air outlet is fixedly connected with the heat exchange device through a pipeline, a hot-blast stove which is connected with the heat exchange device, a temperature and electricity control system which is used for controlling the temperature and electrical programs, motion guide rails which are paved circularly inside or outside the drying chamber, a drying vehicle which continuously and circularly moves on the motion guide rails, and a circularly steering device of the drying vehicle which is used for vertically steering the drying vehicle. The invention can realize the aims at drying and de-watering the fruits and the vegetables through controlling the drying temperature and the flow speed of the heating air according to the balance water theory.

The present invention discloses an ultra-light anti-adhesion release film preparation method, which comprises: 1, mixing 3-4 parts of D120 solvent oil, 3-4 parts of D30 solvent oil, 4-5 parts of butanone, and 1-1.5 parts of isopropanol to obtain a mixture as a solvent, adding 1-1.2 parts of a 7458 silicone oil main agent, 0.1-0.2 part of a 7672 cross-linking agent, 0.02-0.03 part of a 297 anchoring agent, and 0.05-0.06 part of a 4000 catalyst, stirring for 30-40 min at a speed of 1200-1300 rotation / min, filtering with a 200-230 mesh filtration screen, using within 3-3.5 h, carrying out raw film treatment, precisely coating, carrying out drying curing, and carrying out material receiving winding; 2, mixing 2-2.5 parts of D120 solvent oil, 2-2.5 parts of D30 solvent oil, 2.5-3 parts of butanone and 0.8-1.2 parts of isopropanol to obtain a mixture as a solvent, adding 0.8-1 part of a 9106 silicone oil main agent, 0.1-0.2 part of a 7672 cross-linking agent, 0.02-0.03 part of a 297 anchoring agent, and 0.06 part of a 4000 catalyst, stirring for 30-40 min at a speed of 1200-1300 rotation / min, filtering with a 200-230 mesh filtration screen, using within 3-3.5 h, carrying out raw film treatment, precisely coating, carrying out drying curing, and carrying out material receiving winding; and 3, carrying out post-curing treatment. According to the present invention, the produced release film has the light transmittance of more than 88%, has the mist degree of less than 3, and has the peel force stability (normal temperature) of 3-5 g.

The invention discloses a handheld electric hair drier comb. The comb comprises a main unit and a comb assembly; the hair comb assembly comprises a hair comb front cover, a hair comb panel, hair combstrips, a hair comb front bushing, a hair comb rear bushing and a hair comb rear cover. Kidney-shaped holes which are longitudinally arranged and air outlet windows which are transversely arranged areformed in the hair comb panel; hair comb teeth on the hair comb strips are in one-to-one correspondence with the kidney-shaped holes which are longitudinally arranged; the outer frame of the comb front cover wraps the comb panel, the comb strips, the comb front bushing, the comb rear bushing and the comb rear cover to be connected into a whole. Arc-shaped air guide pieces for evenly distributingair volume are arranged on the comb front bushing, air guide openings which are consistent in upper air pressure and lower air pressure and correspond to the air outlet windows are formed by the adjacent arc-shaped air guide pieces, and the comb teeth and the corresponding kidney-shaped holes can swing left and right in a whole row. After the structure is adopted, the comb has the advantages of simple and reasonable structure, convenience in operation and use, uniform air outlet, small damage to scalp and hair, high blow-drying speed, good combing effect, safety and reliability in use and thelike.

The invention discloses an intelligent natural cold source energy saving system with an automatic dust removal function. The system comprises an air inflow channel and a dust exhaust pipe and furthercomprises a negative-pressure dust exhaust fan. The negative-pressure dust exhaust fan is arranged corresponding to the dust exhaust pipe. Negative-pressure dust removal air inflow channels and purifying air supply channels are formed between the air inflow channel and the dust exhaust pipe. The negative-pressure dust removal air inflow channels and the purifying air supply channels are formed through up-and-down spaced stacking of a set of curved-surface dust removal plates. The upper ends of the negative-pressure dust removal air inflow channels and the upper ends of the purifying air supplychannels are connected with the air inflow channel, and the lower ends of the negative-pressure dust removal air inflow channels and the lower ends of the purifying air supply channels are connectedwith the dust exhaust pipe. No any air filtering equipment needs to be maintained or replaced within the service life period of the intelligent ventilating system, and a large amount of maintenance cost is reduced.

The invention discloses a glass door air-cooled refrigerator with an automatic air guide device. The glass door air-cooled refrigerator comprises a refrigerator shell part, an inner container part and a refrigerating system, the refrigerating system comprises a refrigerating element, a controller and the automatic air guide device, the inner side face of an air supply duct is of an inclined face structure, and the included angle between the inner side face of the air supply duct and the horizontal plane in the length direction is 0.5-1 degree; and the automatic air guide device comprises a gravity monitoring mechanism, a first motor, a second motor, a first transmission mechanism, a second transmission mechanism and an air outlet plate, the gravity monitoring mechanism is installed at the bottom of the inner container part, the air outlet plate is matched with a second air supply duct buckle through a first buckle, four long holes in the upper layer and the lower layer are formed in the air outlet plate, long air deflectors are symmetrically installed in the two long holes in the upper layer, two short air deflectors are installed in each long hole in the lower layer, the two long air deflectors are connected through the first transmission mechanism, and the short air deflectors installed in the two long holes in the lower layer are connected through the second transmission mechanism. The production cost is low, local accurate temperature control is achieved, and the temperature is uniform.

The invention discloses a drying oven structure reducing the film surface influence. The drying oven structure comprises a drying oven body, circulation fans and an exhaust fan. The drying oven body is divided into a low-temperature-section first flash-off area, a high-temperature-section high-temperature curing area and a low-temperature-section second flash-off area. Three sections in the drying oven body are provided with air outlet channels. The air outlet channels are evenly formed and communicate with the drying oven body. The air outlet channels are evenly formed and are parallel to guiding rollers below the air outlet channels. The air outlet channels are formed above the corresponding guiding rollers and between the corresponding guiding rollers. The circulation fans communicate with the air outlet channels in the drying oven body through air pipes. The exhaust fan communicates with the drying oven body. The drying oven structure is provided with a structure feeding and distributing flow evenly in the drying oven, so that the discharge air amounts of all air ports in the oven body are consistent, the pressure is balanced, the drying uniformity is improved, all points of products are synchronously dried, and thus the drying efficiency is improved.

The invention discloses an air supply temperature adjusting device and cage culture equipment, relates to the technical field of culture, and solves the technical problem of non-uniform distribution of fresh air in a henhouse due to an air supply temperature adjusting device in the prior art. The air supply temperature adjusting device comprises an air supply mechanism, and the air supply mechanism comprises an air pipe assembly and an adjusting assembly, wherein the air pipe assembly is located between two rows of cage bodies, air outlet holes are formed in the two sides of the air pipe assembly, and the air pipe assembly supplies air to the cage bodies laterally; and the adjusting assembly is arranged on the air pipe assembly, and the air supply amount and / or the air supply speed of all the air outlet holes in the air pipe assembly are / is kept consistent through adjustment of the adjusting assembly. According to the air supply temperature adjusting device, the air pipe assembly is arranged between the two rows of cage bodies, the air outlet holes are formed in the two sides of the air pipe assembly, the air pipe assembly supplies air to the cage bodies laterally, the air supply amount and / or the air supply speed of the air outlet holes in the air pipe assembly are / is kept consistent through adjustment of the adjusting assembly arranged on the air pipe assembly, and uniform air supply to the cage bodies is achieved.

The invention provides an air duct assembly and an air conditioner, and relates to the technical field of air conditioners. The air duct assembly includes a first fan, a second fan and an air duct body, the air duct body is provided with a first air duct and a second air duct which are isolated from each other, the first fan is arranged on the first air duct, and the second fan is arranged on thesecond air duct; the length of the first air duct is the first length, the length of the second air duct is the second length, and the specific value of the first length to the second length is the first specific value; the height of a fan blade of the first fan is the first height, the height of the fan blade of the second fan is the second height, and the specific value of the first height to the second height is the second specific value; and the first specific value and the second specific value meet the following relationship that 0.8<theta1> is smaller than or equal to (theta2)<3> whichis smaller than or equal to 1.2<theta1>, in the formula, theta1 represents the first specific value, and the theta2 represents the second specific value. The air duct assembly and the air conditionercan ensure the air volume consistency of different air outlets, improve the cooling and heating efficiency and improve the user experience.

The invention discloses a multistation energy-saving and low-noise dust removal system, which comprises a dust collection box and a dust removal box, wherein a plurality of dust collection ports are formed in the dust collection box and communicated with a dust collection fan; the dust collection fan is connected with a dust collection control device; a dust outlet is formed in the dust collection box; a dust inlet communicated with the dust outlet is formed in the dust removal box; an air outlet is formed at one end of the dust removal box, which is away from the dust inlet; a dust filtration device is arranged in the dust removal box between the dust inlet and the dust outlet; a mechanical vibration device matched with the dust filtration device is arranged in the dust removal box; a dust accumulation device is arranged below the dust removal box; a plurality of dust falling ports communicated with the dust accumulation device is formed in the bottom wall of the dust removal box; and a dust falling sealing device is arranged corresponding to each dust falling port. Air with dust and smoke in a working place can be collected into the system and filtered by the dust filtration device, so that substances such as the dust can be retained in the dust removal box, and clean air can be discharged, thus protecting a worker from the harm of dust.

The invention discloses constant-temperature equivalent air shower equipment. The constant-temperature equivalent air shower equipment comprises an air shower equipment body, a heat preservation and insulation layer is fixedly arranged in the air shower equipment body, a fan is fixedly arranged at the top end of the air shower equipment body, one end of the fan communicates with an air inlet pipe, and the top end of the air inlet pipe penetrates through the air shower equipment body and the heat preservation and insulation layer. An air shower box is fixedly arranged in the air shower equipment body, a plurality of nozzles are formed in the end, away from a filter screen, of the air shower box, a temperature sensor is fixedly arranged in the air shower equipment body, a refrigerating device is fixedly arranged outside the air shower equipment body, and a controller is fixedly arranged outside the air shower equipment body. The temperature change in the air shower equipment body is sensed through the temperature sensor, and the refrigerating equipment is controlled through the controller to adjust the temperature.

The invention discloses a gas boiler generator set control method, system and device, and the method comprises the following steps: obtaining the tripping information of a fan, and adjusting the tripping state of a fan set according to the tripping information of the fan; the fan unit comprises a first air feeder, a first induced draft fan, a second air feeder and a second induced draft fan; sequentially cutting off the burner groups on the middle layer of the front wall, the upper layer of the rear wall and the upper layer of the front wall, and adjusting the negative pressure of the hearth to be within a preset stable pressure range; the desuperheating water electric stop valve group is closed, and the desuperheating water electric stop valve group is restarted after a preset first holding time length is kept, so that the steam temperature is kept within a preset temperature stable range; and the opening degree of the high-pressure adjusting valve is adjusted to the preset first opening degree position, and the preset second keeping duration is kept, so that the steam amount is kept within the preset steam amount stable range. The control method of the gas boiler generator set solves the problems that the load fluctuation of the generator set is large, the negative pressure of a hearth is unstable and the safety is reduced during auxiliary machine fault load reduction.

The invention discloses a flow-adjustable denitration catalyst wear strength testing device and a testing method, which are used for detecting the wear strength of a denitration catalyst testing platform. The testing device comprises a comparison bin, a testing bin, a feeder, a dust remover, an induced draft fan, a flow meter, a first branch pipe, a first adjusting valve, a first flow meter, a second branch pipe, a second adjusting valve and a second flow meter. The comparison bin, the testing bin, the dust remover and the induced draft fan are sequentially connected, the first branch pipe is connected with the comparison bin in parallel, the second branch pipe is connected with the testing bin in parallel, the first adjusting valve and the first flow meter are installed on the first branch pipe, the second adjusting valve and the second flow meter are installed on the second branch pipe, and the flow meter is connected to an inlet pipeline of the comparison bin. And a feeder is connected to the pipeline between the comparison bin and the test bin. The device can simulate the wear condition in the actual catalyst operation, controls the flow passing through the comparison sample and the test sample to be consistent and to be a predetermined value specified in the test standard, and is high in test result reliability.

The invention relates to an internal volute for fans, which is provided with an upper cover and a lower cover, wherein the upper cover and the lower cover are connected with a barrel so as to form an irregular tubular shape which extends along a straight line and takes a volute shaft center (O) as a shaft center, one end of the upper cover is provided with three straight-line edges, a first straight-line edge (1) is orthogonally connected with a second straight-line edge (2), the second straight-line edge (2) is orthogonally connected with a third straight-line edge (3), the third straight-line edge (3) is connected with a first radian edge (4), the first radian edge (4) is connected with a second radian edge (6) through a fourth straight-line edge (5), the second radian edge (6) is connected with a third radian edge (7), the third radian edge (7) is connected with a fourth radian edge (9) through a fifth straight-line edge (8), and one end of the lower cover opposite to the end of the upper cover provided with three straight-line edges is provided with three radian edges. A first radian edge (21) is connected with a third radian edge (23) through a second radian edge (22). The third radian edge (23) is connected with a fourth radian edge (25) trough a first straight-line edge (24), the fourth radian edge (25) is connected with a fifth radian edge (26), and the fifth radian edge (26) is connected with a sixth radian edge (27).

The invention discloses an air outlet of an energy storage air duct. The air outlet comprises a shifting knob, a shifting knob limiting block, a plurality of gear, a plurality of blades and a shell. The blades are arranged side by side, wherein each blade is provided with a blade center shaft, and the two ends of each blade center shaft are installed on the shell. The gears are arranged at the twoend parts of the central shaft of the blade and are fixedly connected with the central shaft of the blade; the gears are arranged on the outer side of the shell; every two adjacent gears are meshed with each other; the shifting knob is meshed with the gear, and the shifting knob is arranged on the shell through a shaft arranged in the center of the poking button; a toggle limiting block is arranged on the outer edge of the toggle, and the toggle limiting block is mounted on the shell; the shifting knob is provided with a convex block corresponding to the poking button limiting block. The airconditioner has the advantages that the air volumes of the air outlets at different positions are consistent; and the service life of the battery pack / battery module in the energy storage box is prolonged.

The invention relates to a piece of countercurrent continuous-type fruit and vegetable drying equipment, comprising a drying chamber, a hot air inlet pipeline of the drying chamber which communicates with the drying chamber, a heat exchange device which communicates with the hot air inlet pipeline of the drying chamber, a main fan of which the air outlet is fixedly connected with the heat exchange device through a pipeline, a hot-blast stove which is connected with the heat exchange device, a temperature and electricity control system which is used for controlling the temperature and electrical programs, motion guide rails which are paved circularly inside or outside the drying chamber, a drying vehicle which continuously and circularly moves on the motion guide rails, and a circularly steering device of the drying vehicle which is used for vertically steering the drying vehicle. The invention can realize the aims at drying and de-watering the fruits and the vegetables through controlling the drying temperature and the flow speed of the heating air according to the balance water theory.

The invention provides an air outlet device. The air outlet device comprises an air duct, a power assembly and a mesh enclosure assembly; the power assembly is arranged in the air duct and comprises fan blades and a power piece which are connected, and the power piece is suitable for driving the fan blades to rotate in the first rotating direction or the second rotating direction which are opposite; the mesh enclosure assembly comprises a first mesh enclosure and a second mesh enclosure which are arranged at the two ends of the air duct respectively, the first mesh enclosure is correspondingly arranged in the air outlet direction when the fan blades rotate in the first rotating direction, the second mesh enclosure is correspondingly arranged in the air outlet direction when the fan blades rotate in the second rotating direction, the first mesh enclosure is suitable for diffusing and discharging the outlet airflow, and the second mesh enclosure is suitable for discharging the outlet airflow in a centralized mode. Through the arrangement, a user can adjust the rotating direction of the fan blades by controlling forward and reverse rotation of the power piece, then the air inlet side and the air outlet side at the two ends of the air duct can be switched; the air outlet mode of the air outlet device can be adjusted through arrangement of the first mesh enclosure for diffusing air and the second mesh enclosure for centralized air outlet at the two ends of the air duct correspondingly, and the defect that in the prior art, a single air outlet device cannot achieve the air gathering function and the air diffusing function at the same time is overcome.

The invention discloses a solar photovoltaic photo-thermal heat collector with a porous foam metal heat-exchange structure. The solar photovoltaic photo-thermal heat collector adopts a structure of up-down double cooling channels, combines with a porous foam metal layer (6) for heat-exchange enhancement, the temperature of solar photovoltaic elements is reduced, the power generation efficiency ofthe solar photovoltaic elements is improved, at the same time, a large amount of heat generated by the solar photovoltaic elements is timely transmitted to cooling gas, and the cooling gas is discharged from a heat collector air outlet (11) to be used for preheating, drying, indoor heating and the like. According to the solar photovoltaic photo-thermal heat collector with the porous foam metal heat-exchange structure, the applied foam metal has a high thermal conductivity and a high specific surface area, the cooling efficiency of traditional solar photovoltaic photo-thermal heat collectors can be effectively improved, and the down-inflow and up-outflow modes are adopted, so that the heat-exchange process is close to the counter-current heat exchange and the heat-exchange efficiency achieves the highest.

The invention relates to the technical field of operation and maintenance equipment, and particularly discloses a fan and a using method thereof. The fan comprises a moving device arranged on the inner cavity surface of a power distribution room body, a supporting rod and a fan body are arranged on the moving device, a first driving assembly and a second driving assembly are arranged on the fan body, the first driving assembly is used for driving the fan body to rotate relative to the supporting rod, and fan blades are arranged on the second driving assembly. The second driving assembly is used for driving the fan blades to rotate, a laser scanning radar, an infrared temperature measuring assembly and a controller are arranged on the fan body, and the laser scanning radar, the infrared temperature measuring assembly, the first driving assembly, the second driving assembly and the moving device are in communication connection with the controller. The controller drives the moving deviceto move on a plurality of inner cavity faces of the power distribution room body, drives the first driving assembly to drive the fan body to face an object and drives the second driving assembly to drive the fan blades to rotate. The fan can automatically adjust the cooling sequence, and the cooling effect is uniform.