6834 results about "Blow out" patented technology

The invention relates to the technical field of dust removal equipment, in particular to efficient, energy-saving and environment-friendly dust removal equipment which comprises a moving assembly installed on the indoor top. The air exhaust end of the air exhaust equipment is connected to the filtering assembly, the filtering assembly comprises an outer cylinder, the ends of the branch pipes are each provided with a sealing assembly, the telescopic cylinders are connected with the high-pressure air storage tank, air blown into the sealing assemblies by the telescopic cylinders can enter the filtering cylinders, and when the filtering cylinders below one sealing assembly are cleaned, the sealing assemblies are arranged on the outer cylinder, and the sealing assemblies are arranged on the sealing assemblies. The other sealing assemblies and the filter cartridge are still in a working state, air blown out from the port of the air pipe can drive surrounding air to flow towards the port of the air inlet pipe, the port of the air inlet pipe is matched for air exhaust, the blown air is sucked into the outer barrel, and the dust removal effect and the dust removal range are further improved in cooperation with operation of the moving assembly; the self-cleaning function of the filter screen of the dust removal equipment is achieved through cooperation, the situation that the normal production and processing operation is affected by shutdown when the filter cylinder is cleaned is effectively avoided, and the dust removal range and the dust removal effect are effectively improved.

An air guide frame, a fan head, and a handheld concentrating fan are provided. The air guide frame is configured to be arranged at an air outlet of a fan head and guide air from a fan. the air guide frame includes an inner frame and a separator ring arranged at a periphery of the inner frame; a first air channel is formed in a periphery of the separator ring; a second air channel is formed between the inner frame and the separator ring; and a wind speed of wind exported from the second air channel is greater than a wind speed of wind exported from the first air channel. Compared with the existing technology, the air guide frame having the first air channel and the second air channel can implement the wind speeds of winds blown out through the two air channels being different.

The invention discloses an air conditioner and a control method thereof. The air conditioner comprises a main body internally provided with an air duct, the air duct is provided with a front air outlet and a lower air outlet, the front air outlet is located in the front side wall of the main body, the lower air outlet is located in the front of the lower side wall of the main body, and the size of the front air outlet in the vertical direction is larger than that of the lower air outlet in the front-back direction; the opening and closing doors are sequentially arranged in the vertical direction and arranged at the front air outlet in a swinging mode, the opening and closing doors are arranged to be capable of jointly closing the front air outlet, the opening and closing door located at the lowest position is arranged to be capable of closing the lower air outlet, and the lower air outlet is in an open state on the basis that the front air outlet is jointly closed by the opening and closing doors. The air conditioner is matched with an engineering panel so that hot air and cold air can be supplied to the lower portion, and hot air and cold air can also be supplied to the front portion; in addition, the size of the front air outlet in the vertical direction is larger than that of the lower air outlet in the front-back direction, and therefore condensation caused by air backflow is not prone to occurring in the cold air discharging process of the lower air outlet.

According to one embodiment, a vehicle seat air conditioner is provided in a first seat of a vehicle and performs air-conditioning for another seat other than the first seat. The vehicle seat air conditioner includes a blower, a blowing duct configured to blow out air guided by the blower from a blowing port provided on a side surface of the first seat, and a controller configured to control the blower. The controller is configured to: acquire blowing target positions of air blown out from the blowing port of the first seat and a blowing port of the other seat; and control, based on the blowing target positions, at least one of a time at which air is blown out from the blowing port, a blowing direction, and selection of the blowing ports from which the air is blown out.

The hair straightener comprises a lower handle, an inner cylinder, a heating frame, a motor, a circuit board, a wire protecting sleeve, a filter screen support, a tail ring, an upper handle, a lower aluminum plate, a handle cover, a deadbolt, an upper cover plate, an upper aluminum plate, a fixing plate, a lower cover plate, an air outlet frame and a key circuit board. Compared with the prior art, on the basis of the hair straightener, the hair straightener has the function of the hair drier, hot air can be blown out at a high speed, the hair straightener and air blowing are integrated, and the hair straightener is more convenient to use.

Disclosed in the present invention is a laser cutting non-contact surface dust removal apparatus, which comprises an electrode sheet upper dust removal system, an electrode sheet lower dust removal and supporting system, and a guide passing roller, the guide passing roller being located between the electrode sheet upper dust removal system and the electrode sheet lower dust removal and supporting system. A porous air suspension plate and an air blowing connector are provided in the electrode sheet lower dust removal and supporting system, compressed air from the air blowing connector passing through the porous air suspension plate to form an air damping; the electrode sheet upper dust removal system comprises an air blowing assembly and a dust removal cavity assembly, an airflow blown out of the air blowing assembly being balanced with the air damping formed by the porous air suspension plate. In the present invention, the porous air suspension plate and the air blowing connector are arranged below an electrode sheet, such that the compressed air from the air blowing connector passes through the porous air suspension plate to form the air damping, so as to achieve the effects of supporting and buffering on the electrode sheet; the balance between the air blown above the electrode sheet and the suspension force under the electrode sheet not only achieves a purpose of dust removal, but also prevents out-of-focus of a laser caused by shaking of the electrode sheet, which affects the cutting quality of the electrode sheet.

The invention relates to the technical field of machining equipment, and discloses machining equipment for producing automobile parts, which comprises a chuck, the chuck comprises a chuck body, a plurality of clamping jaws and a plurality of cleaning parts, the plurality of cleaning parts are in one-to-one correspondence with the plurality of clamping jaws, and each cleaning part comprises a first telescopic rod, a connecting plate and a first air blowing pipe, the first telescopic rod is connected to the inner wall of the back face of the chuck body and located in the chuck body, the first telescopic rod is perpendicular to the chuck body, and the connecting plate is connected to the first telescopic rod so that the connecting plate can reciprocate in the perpendicular direction of the chuck body along with stretching and shortening of the first telescopic rod. A plurality of openings are formed in the first air blowing pipe, the first air blowing pipe is connected with an air blowing pump, and air is blown out from the openings of the first air blowing pipe along with movement of the connecting plate to blow away chippings on the clamping jaws. According to the equipment, chippings on the clamping jaws can be cleaned, and the possibility of errors of parts is reduced.

The embodiment of the invention relates to the technical field of fans, and particularly discloses an active noise reduction fan which comprises a shell which is a portable shell, a cavity is formed in the shell, and an air inlet and an air outlet which are communicated with each other are formed in the two ends of the shell respectively; the fan assembly is arranged in the cavity and used for rotating to generate wind pressure so that air can be sucked in from the air inlet, passes through the cavity and then is blown out from the air outlet; the noise reduction assembly is arranged in the cavity and used for collecting noise signals inside and outside the cavity in real time when the fan assembly operates and sending out noise reduction signals according to the noise signals; wherein the noise reduction signal is a dynamic comprehensive noise signal including air inlet noise, air outlet noise, fan blade noise and / or motor noise. Through reasonable design of functions of the noise reduction assembly, active noise control is performed on the noise signal by using the noise reduction signal, and the noise level during operation of the fan is reduced.

The utility model relates to the field of plastic particles, in particular to a plastic particle stirring device with a scattering structure. The technical problem that plastic particles are moist, so that the plastic particles are adhered or caked during discharging, and the feeding smoothness is affected is solved. According to the technical scheme, the plastic particle stirring device with the scattering structure comprises a stock bin, a conveying channel, an extruder, a feeding hopper and the like; the stock bin is provided with a conveying channel; the conveying channel is connected with an extruder; the upper side of the stock bin is fixedly connected and communicated with a feeding hopper, and a valve is arranged between the stock bin and the feeding hopper. Plastic particles in the feeding hopper are stirred through the stirring plate, the plastic particles bonded together are stirred and scattered, hot air is blown out of the first air blowing pipe, the plastic particles in the feeding hopper are heated and air-dried, water vapor in the plastic particles is removed in cooperation with stirring of the stirring plate, and the plastic particles are dried.

The utility model discloses a hair dryer which comprises a handle, a main machine shell and an air outlet device, the handle is connected to the main machine shell, and the air outlet device is installed in the main machine shell. The main case is provided with an air inlet and an air outlet cylinder, the air inlet is located at the rear end of the main case, and the air outlet cylinder is located at the front end of the main case; the air outlet device comprises a centrifugal fan and a backflow pipeline, the centrifugal fan is provided with an air inlet end and an air outlet end, the air inlet end is communicated with the rear end of the backflow pipeline and the air inlet, and the air outlet end is communicated with the front end of the backflow pipeline and the air outlet barrel. According to the embodiment of the utility model, the centrifugal fan is used for supplying air, a part of hot air blown out from the air outlet end of the centrifugal fan is re-drained to the air inlet end and is compressed and heated again by utilizing the principle that the centrifugal fan can compress air to generate heat in the high-speed operation process and matching with the arranged backflow pipeline, and the circulation is repeated, so that the heat energy utilization rate is improved. The temperature of hot air blown out by the centrifugal fan is gradually increased, the effect of replacing heating wires for heating is achieved, and the air blower is more energy-saving.

The invention discloses a device and method for improving the laser welding quality of a large cylindrical battery tab, belongs to the technical field of new energy automobile battery welding, and aims to solve the problems of low material absorption rate, poor welding protection effect and the like in the prior art. The device comprises a fastening pressing block, the fastening pressing block fixes a battery cell and a collector plate, the fastening pressing block is provided with an internal gas passage, a blowing nozzle of the fastening pressing block is sequentially connected with a plasma activator, a gas heating device, a gas flow controller and a protective gas cylinder, and an exhaust nozzle of the fastening pressing block is connected with an exhaust device. Nitrogen blown out through the blowing nozzle sweeps over the surface of a to-be-welded area of the collector plate, a protective air curtain is formed in the to-be-welded area, the plasma activator conducts ionization activation on the nitrogen, formed nitrogen free radicals and the to-be-welded surface form a nitride layer in a chemical mode, and the laser absorption rate of the material can be remarkably improved. The reaction between the preheated workpiece surface and nitrogen free radicals can be accelerated, and a dual synergistic mechanism of physical preheating and chemical activation is formed.

The automatic punching device for automobile brake disc machining comprises a workbench, a feeding mechanism used for automatic feeding is arranged at the top of the left side of the workbench, an annular sliding rail is fixedly installed in the center of the top of the workbench, and a plurality of first limiting sliding blocks are slidably connected to the annular sliding rail; according to the automobile brake disc punching device, symmetrical punching is carried out on an automobile brake disc through two cutting punching machines on the symmetrical drilling mechanism, the punching efficiency is high, during punching, an inserting rod is inserted into a limiting sleeve, the cutting punching machines are limited and fixed through the limiting sleeve and the inserting rod, and the punching efficiency is high; the cutting perforating machine has the advantages that the problem that the cutting perforating machine deflects during perforating is avoided, perforating quality is improved, an inserting rod can press a bottom plate downwards every time the inserting rod is pressed downwards, air in an air bag is blown out from an air blowing pipe when the inserting rod ascends, the top of the automobile brake disc is blown to remove chippings while pressing downwards, and manual cleaning with an air gun is not needed.

The utility model discloses a hydraulic rock drill which comprises a machine body composed of a machine base, a cylinder body, a middle body, a gear box, a gear box cover and a machine head which are sequentially connected, a first cavity for containing an impact piston and a second cavity for containing a bit shank are formed in the machine body, and a cooling lubricating cavity communicated with the first cavity and the second cavity is formed in the machine body. An air inlet chamber is formed in the machine base, and an air inlet communicated with the air inlet chamber is formed in the rear end of the machine base. The impact piston is provided with a central channel which is communicated with the air inlet chamber and the cooling and lubricating air chamber; an air passing channel which is communicated with a gap between the bit shank, the rotary assembly and the machine head and a gap between the bit shank and the machine head part is formed in the machine head; cooling and lubricating air introduced into the air inlet chamber enters the cooling and lubricating cavity through the center channel of the impact piston, sequentially passes through the bit shank, the gap between the rotary assembly and the machine head and the air passing channel, enters the gap between the head of the bit shank and the machine head and is blown out, and the situation that the cooling effect is poor due to the fact that air flow is poor after heat exchange is avoided.

The utility model discloses a drying device for a plastic pipe production line, which relates to the technical field of pipe production drying and comprises a drying box, a support frame is arranged at the lower end of the drying box, a feeding conveyor belt is arranged in the support frame, a motor is arranged on the outer surface of the front end of the support frame, and the motor is connected with the feeding conveyor belt. A plurality of sets of feeding roller shafts are arranged on the outer surface of the feeding conveying belt, fan cases are arranged on the outer surfaces of the two sides of the drying box, and two sets of drying fans are arranged on the outer surfaces of one sides of the two sets of fan cases. According to the drying device for the plastic pipe production line, the pipe which is cooled can be rapidly dried through the arranged drying box, the drying fans on the inner walls of the two sides of the drying box can blow air flow to the pipe so as to promote drying, and the upper end of the drying box is provided with the heat drying machine for conducting heat drying on the pipe at the same time; and the drying effect is comprehensive, and efficiency is high.

Provided is a battery module capable of accurately detecting the entry of a liquid. 【Solution means】The battery module 1 includes an exterior case 2, a battery assembly 3 housed in the exterior case 2, an inlet 27 provided on a first end wall 21 of the exterior case 2, a fan 5 attached to the inner surface of the first end wall 21 and blowing out the air sucked through the inlet 27 into the interior of the exterior case 2, a standing wall portion 6 disposed between the battery assembly 3 and the fan 5 and having an opposing surface 61 facing the fan 5, and a liquid leakage sensor 7 disposed below the opposing surface 61.

The utility model relates to an air duct structure and a cabinet machine in the technical field of air conditioners, the air duct structure comprises a main air duct, a fan, an air outlet frame and a grating, the grating is installed between the air outlet end of the main air duct and the air outlet frame, airflow in the main air duct contacts with the grating in the flowing process, the grating scatters eddy current, and the air outlet end of the main air duct is connected with the air outlet frame. Air flow blown out of the main air duct passes through the grille and then is blown to the air outlet frame, the pressure difference between the air flow and the air outlet frame is reduced, air outlet is smoother, and therefore abnormal sound is effectively eliminated. The installation position of the grille can effectively scatter the vortex area, meanwhile, installation operation of the grille is more convenient, the installation position is easy to operate, additional positioning pieces do not need to be added in the air duct to fix the grille, the grille only needs to be directly connected to the lower side of the air outlet frame or the upper side of the air outlet end, and the installation operation is convenient. The additional positioning piece is omitted, so that the smoothness of the air cavity of the main air duct is further improved, and the air resistance of the air cavity is reduced.

The invention belongs to the technical field of natural gas transportation and distribution filtration of natural gas stations, and relates to a filter and a filter element backwashing method thereof without stopping natural gas transportation and distribution filtration. The filter comprises a main cylinder, a main filter element and a backwashing device, wherein the backwashing device comprises an air blowing cylinder arranged in the main filter element, a high-pressure hose used for conveying high-pressure gas into the air blowing cylinder and a driving mechanism used for driving the air blowing cylinder to reciprocate in the main filter element in the axial direction; the air blowing cylinder is of a cylindrical structure with two closed ends, and a plurality of air blowing holes are formed in the side wall; the high-pressure hose is located in the main filter element, the bottom end of the high-pressure hose is connected to the top end of the air blowing cylinder, the top end of the high-pressure hose is externally connected with a high-pressure air supply source, and high-pressure air entering the air blowing cylinder is blown out through the air blowing holes to backwash the main filter element from inside to outside. The air blowing cylinder of the filter can perform movable backwashing in the main filter element, so that the whole main filter element is helped to recover the filtering effect, and the backwashing device can independently operate to backwash the main filter element while the filter continuously filters natural gas.

The invention relates to the technical field of environmental protection and dust removal, and discloses a dust removal device for calcium hydroxide product production, the dust removal device comprises a box body, the lower surface of the box body is provided with two sets of dust falling hoppers, the two sides of the box body are fixedly connected with an air inlet pipe and an air outlet pipe respectively, and the inner wall of the box body is provided with a partition plate. The driving assembly drives the pulse sliding pipe and the plugging assembly to move downwards, after the pulse sliding pipe and the plugging assembly move to a certain position, the control assembly controls the plugging assembly to plug a certain section of the filter cartridge, then the pulse mechanism enables gas to pass through the pulse main pipe, the pulse fixing pipe and the pulse sliding pipe, and then the gas is blown out from the pulse head. And then the driving assembly drives the blocking assembly to continue to move downwards, pulse dust removal is carried out on the filter cartridge section by section, pulse airflow accurately covers the whole section of the filter cartridge, it is ensured that dust on all parts can be thoroughly removed, and the dust removal effect is greatly improved.

The invention relates to a life-prolonging, resistance-reducing, energy-saving and consumption-reducing comprehensive technology for all systems of a pilot-operated type smoke gathering and conveying flue. The problems that the surface of a filter screen cannot be cleaned while the flue is used and the like are effectively solved. According to the technical scheme, the device comprises a pipeline, a filter screen is arranged in the pipeline, a clamping strip is arranged on the surface of the filter screen in a sliding mode, a lifting strip is rotationally arranged on the lower surface of the clamping strip, and a linkage mechanism is arranged on one side of the lifting strip. Clamping strips designed in the scheme can be driven by a lifting strip to move up and down, a filter screen can be jacked up in the upward moving process, dust is made to move towards the two sides, dust removal rods on the two sides can convey the dust to the outside conveniently, the clamping strips can be made to deviate left and right in the upward moving process, and the dust removal efficiency is improved. Due to left-right deviation, the filter screen can slide on the clamping strips, and air can be discharged from the bottom of the filter screen to blow out dust in the sliding process.

Provided is a heat gun formed by wave-type heating bodies. The heat gun includes a housing assembly and a heating assembly mounted in the housing assembly, where an air supply assembly is fixedly mounted in the housing assembly. The heating wire is wound into a wave-type structure by dedicated equipment. Compared with a traditional slingshot-wire-type structure, the wave-type structure is capable of resisting deformation of the heating wire at a high temperature and in a process from a high temperature to a normal temperature such that defects caused by thermal expansion and contraction when the heating wire operates or stops can be avoided. After the wave-type structure of the heating wire is wound around a mica plate, a direction of the wave-type structure is exactly perpendicular to a direction of an air channel such that wind generated by a fan behind can blow out heat with maximum efficiency.

The utility model relates to the technical field of air coolers, in particular to a split type air cooler which comprises a fixed bin, a shutter, a connecting bin, a pipe bundle, a mounting plate, a first bolt, a square bin, a supporting frame, a connecting frame, a power assembly, a wind power assembly and a connecting assembly. Then a connecting bin and a fixed bin are fixed through a connecting assembly, a mounting plate moves to one side of the fixed bin, then a first bolt is tightened to fix a square bin, at the moment, a pipe bundle is connected with an external compressor, and then a power assembly above a supporting frame is used for driving a wind power assembly to suck external air into the fixed bin; the temperature of the tube bundle is controlled by the external compressor, at the moment, air is blown out through the shutter, and the equipment is assembled and transported in such a way, so that the transportation cost can be effectively reduced, and the installation efficiency of workers is ensured.

The invention provides a material overturning structure of a forging and pressing machine, and relates to the field of forging and pressing equipment. The top end face of the forging and pressing workbench is fixedly connected with four supporting guide columns in a rectangular array shape. The upper parts of the four supporting guide columns are fixedly connected with a mounting seat; a hydraulic cylinder is arranged in the mounting seat; the bottom end face of an output shaft of the hydraulic cylinder is fixedly connected with a forging base. The top end face of the forging and pressing workbench is fixedly connected with a blank containing plate. The forging and pressing seat is aligned with the blank placing plate; a hydraulic station is arranged on the right portion of the forging and pressing workbench. When the machine tool shaft accessories are turned over, compressed air in the air supply piston box is fed into the air guide pipeline through a series of transmission and is blown out through the blowing frame, oxide skin generated in the forging and pressing process is blown off, and the problem that workers usually need to use tools such as air guns and the like is solved. The problems that the surface of a blank is blown and cleaned in the forging and pressing process, a worker needs to continuously and repeatedly blow and sweep, and the labor intensity of the worker is large are solved.

The invention provides plasma cutting equipment and method, and relates to the technical field of ion cutting, the plasma cutting equipment comprises a cutting main body and a blanking main body, the first side of the cutting main body is provided with a first window for a cut workpiece to penetrate out, and the second side of the cutting main body is provided with a second window for the cut workpiece to penetrate in; a first sealing device is mounted on the outer side of the first window, and a second sealing device is mounted on the outer side of the second window; the second sealing device comprises a collecting tank located at the lower end of the second window and an air blowing assembly located at the upper end of the second window, the collecting tank and the air blowing assembly extend in the length direction of the second window, and the air blowing assembly continuously blows out a sealing medium in the direction of the collecting tank to form an intangible sealing barrier. According to the plasma cutting device, smoke generated in the plasma cutting process is effectively prevented from overflowing, the plasma cutting process is simplified while the workshop operation environment is greatly improved, and production accidents are avoided.

The invention provides a heat dissipation system and energy storage equipment, and belongs to the technical field of heat dissipation. The heat dissipation system comprises a first air duct structure and a second air duct structure, wherein the first air duct structure comprises first air duct paper with a first air cavity, a first air inlet and a first air outlet; the first air cavity is used for accommodating part of a first heating element; the second air duct structure comprises second air duct paper with a second air cavity, a second air inlet and a second air outlet, and the first air duct paper and the second air duct paper are arranged side by side; the second air cavity is used for containing a second heating piece, and the heating value of the second heating piece is smaller than that of the first heating piece. The air inlet fan is arranged at the first air inlet; the reversing fan is arranged at the downstream of the airflow direction of the first air cavity and the upstream of the airflow direction of the second air cavity; and the air outlet fan is arranged at the second air inlet, and the air outlet fan is used for introducing the air flow into the second air cavity and blowing the air flow out through the second air outlet. According to the invention, the uniformity of heat dissipation can be improved, and the aesthetic property of a corresponding product can be improved.

The invention relates to the technical field of laser cutting equipment, and discloses galvanized coiled plate cutting equipment which comprises a mounting frame, a guide rail structure, a cutting structure, a conveying structure, an intercepting toothed plate, a slag removal fan and a discharging structure. The cutting structure comprises a cutting seat, a laser cutting head, a separated protective cover, the intercepting toothed plate, the slag removal fan and the discharging structure; the separated protective cover is formed by splicing a plurality of splicing covers. Each splicing cover comprises an outer cover plate, an inner air box, a limiting plate, a limiting spring and an air supply hose. When the device is used, high-pressure air is blown out of the inner air box to form a protective air curtain on the splicing cover, the annular air cover and the laser cutting head, and therefore the situation that slag splashes and is intercepted, and zinc steam adheres to the splicing cover, the annular air cover and the laser cutting head can be prevented; and air is forced to be discharged along the cutting seam by the closed space formed by the separation type protective cover, so that the blowing force of the airflow to the lower edge of the notch is enhanced, and the adhering slag can be forcibly stripped.

The invention discloses an air guide assembly, an angle control method of an air guide plate, electronic equipment and a storage medium, and relates to the technical field of heat dissipation, the air guide plate can adjust the flow direction of air flow blown out by a fan, so that the flow direction of the air flow can be flexibly adjusted through rotation of the air guide plate, and air cooling heat dissipation of the air flow in any direction is achieved. Besides, after the sensors collect relevant data, the processor can control the driver to drive the air guide plate to rotate according to the data collected by the at least one sensor, so that the air guide direction of the air guide plate can adapt to the data collected by the at least one sensor, the air guide plate is driven to rotate through the driver, and air cooling heat dissipation is flexibly and efficiently executed. Compared with a heat dissipation scheme in the related technology, heat dissipation is more flexible and efficient, and the structure is simpler. Therefore, the technical problems of low heat dissipation efficiency and complex heat dissipation structure can be solved, and the technical effects of flexible and efficient heat dissipation and simple heat dissipation structure are achieved.

The invention discloses an oil-immersed transformer with an explosion-proof protection structure, the oil-immersed transformer comprises an explosion-proof box body and an oil-immersed transformer installed in the explosion-proof box body, the top of the explosion-proof box body is fixedly provided with a small nitrogen generator, and the inner top wall of the explosion-proof box body is fixedly provided with a gas pipe; a pipeline on the small nitrogen generator is communicated with the interior of the gas pipe, the gas pipe is connected with a branch pipe communicated with the interior of the gas pipe, the branch pipe is fixedly provided with a first electric control valve, the gas pipe is provided with a second electric control valve, and the second electric control valve is located at the bottom of the branch pipe. In the aspect of flame retardance, the flame-retardant assembly is unique in design, and the movable plate, the expansion air bag, the storage box and other components are matched ingeniously. When fire extinguishing dry powder exists in the storage box and the inner wall is inclined, overheated or abnormally burnt, the push rod pulls the movable plate, nitrogen in the expansion air bag enters the storage box, the dry powder is blown out to form dry powder cloud, flames are effectively restrained, the explosion possibility is reduced, and reliable flame-retardant protection is provided for the oil-immersed transformer.

The invention discloses a directional heat dissipation power distribution cabinet with adjustable air deflectors, which relates to the technical field of equipment for power distribution cabinets and comprises a cabinet body and a heat dissipation unit arranged in the cabinet body. The heat dissipation unit comprises a directional heat dissipation assembly used for carrying out fixed-point jet cooling on key heating elements, an air guide assembly used for optimizing overall airflow organization in the cabinet, and a water cooling assembly used for carrying out pre-cooling on cooling airflow of the directional heat dissipation assembly. The directional heat dissipation assembly comprises a fan at least arranged on the top wall in the cabinet body, an air supply pipe communicated with an outlet of the fan, and an annular air pipe arranged in the power distribution cabinet and communicated with the air supply pipe. Through cooperation of the directional heat dissipation assembly and the water cooling assembly, air blown out of the air blowing pipe at the tail end of the telescopic air column is no longer ambient temperature air but low-temperature cold air cooled in advance through the liquid cooling system. According to the pre-cooling type directional air supply mechanism, the heat dissipation efficiency and the limit capacity of air cooling are greatly improved.

The utility model discloses a high-precision cylindrical grinder for a lead frame. The high-precision cylindrical grinder comprises a lathe bed, and a power device, a grinding wheel assembly, a diamond grinding wheel repairing cutter, a cooling assembly, an air pump, a negative pressure pump, a dust removal box, a main shaft and a driven shaft which are arranged in the lathe bed. In the grinding wheel trimming process, compressed air generated by the air pump enters the air blowing cavity along the pipeline and the air pipe connector and then enters the blowing groove through the communicating groove, airflow is blown out after the flow speed is increased through the closing opening in the tail end of the blowing groove, and a complete annular air curtain is formed on the outer wall of a part located between the chuck and the ejector pin; high-speed moving sand particles generated during grinding wheel repairing can be effectively prevented from falling on the surface of a part, the product machining quality is improved, and then smooth production of a lead frame is guaranteed.

A vehicle seat air conditioning device includes: a fan built in a seat; a controller that controls the fan; and an outlet that blows out air from the surface of a seat back, where the air is guided through a flow path formed in the seat back. The outlet is provided with a wind direction adjuster including one or more plates that adjust the direction of air blown out from the outlet. The one or more plates are disposed in an orientation completely or substantially parallel to or tilted with respect to the central axis of the flow path along which air to be blown out from the outlet flows. The controller controls the rate of rotation of the fan based on a first temperature that is a temperature inside a vehicle and a second temperature that is the temperature of air blown out from the outlet.